CN117980980A

CN117980980A - Backlight module and display device

Info

Publication number: CN117980980A
Application number: CN202280063300.7A
Authority: CN
Inventors: 杜强; 张玉欣; 庞震华; 刘广学; 李波涛
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-11-26
Filing date: 2022-08-15
Publication date: 2024-05-03

Abstract

A backlight module and a display device are provided. The backlight module comprises a circuit board, a driving chip arranged on the circuit board and a plurality of luminous areas corresponding to the driving chip. The driving chip is provided with a first pin (1) and a third pin (3) which are positioned on the first side of the driving chip, and a second pin (2) and a fourth pin (4) which are positioned on the second side of the driving chip; wherein the first pin (1) and the second pin (2) are electrically communicated in the driving chip, and the third pin (3) and the fourth pin (4) are electrically communicated in the driving chip; the first side is arranged opposite to the second side; the driving chip is also provided with a plurality of control ends positioned at the third side of the driving chip; the plurality of control ends are correspondingly connected with the plurality of light-emitting areas. Based on the design of the driving chips, when a plurality of driving chips are cascaded, wires bypassing a light emitting area connected with the driving chips are not needed, and therefore the wiring complexity of the plurality of driving chips is reduced when the backlight module integrated with the lamp driver is arranged on a single panel.

Description

Backlight module and display device

Cross Reference to Related Applications

The application is required to be submitted at the month of 2021, 11 and 26, and the application number is 202111424817.8; submitted at month 12 of 2021, 24, application number 202123301293.1; priority of China application number 202220884311.9 filed on 15 at 04 at 2022, the entire contents of which are incorporated herein by reference.

Technical Field

The present disclosure relates to electronic technology, and particularly to a backlight module and a display device.

Background

A display device generally includes a lamp panel provided with a plurality of light emitting regions and a driving panel for driving the light emitting regions to emit light. In the display device, in order to reduce the driving boards in the display device and the lamp boards carrying a plurality of light emitting areas, the driving boards and the lamp boards can be arranged on the same single-sided circuit board, so that the lamp driving is integrated.

Disclosure of Invention

The embodiment of the application provides a backlight module, which comprises: the LED display device comprises a circuit board, a driving chip arranged on the circuit board and a plurality of light-emitting areas corresponding to the driving chip; the driving chip is provided with a first pin and a third pin which are positioned on the first side of the driving chip, and a second pin and a fourth pin which are positioned on the second side of the driving chip; wherein the first pin is electrically communicated with the second pin in the driving chip, and the third pin is electrically communicated with the fourth pin in the driving chip; the first side is arranged opposite to the second side; the driving chip is further provided with a plurality of control ends positioned on the third side of the driving chip; the control ends are correspondingly connected with the light-emitting areas.

The present application provides a display device including: the backlight module, the main board and the power supply according to the first aspect; the power supply is connected with the backlight module and the main board and is used for providing power supply signals; the main board is connected with the backlight module and is used for sending control signals and clock signals to the backlight module so that the backlight module emits light based on the clock signals and the control signals.

Drawings

Fig. 1 is a schematic structural view of a display device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a driving chip according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a driver chip cascade according to an embodiment of the application;

fig. 4 is a schematic structural diagram of a backlight module according to an embodiment of the application;

FIG. 5 is a schematic diagram of a cascade of driver chips according to an embodiment of the application;

FIG. 6 is a schematic diagram of a cascade of driver chips according to an embodiment of the application;

FIG. 7 is a schematic diagram of a cascade of driver chips according to an embodiment of the application;

fig. 8 is a schematic structural diagram of another backlight module according to an embodiment of the application;

fig. 9 is a schematic diagram of a fourth cascade of driving chips according to an embodiment of the application;

Fig. 10 is a schematic structural diagram of a fifth driving chip cascade according to an embodiment of the present application;

fig. 11 is a schematic structural view of a backlight module according to another embodiment of the present application;

fig. 12 is a schematic structural diagram of a backlight module according to an embodiment of the application;

Fig. 13 is a schematic view of an operation scene between a display device and a control apparatus according to an embodiment of the present application;

Fig. 14 is a hardware configuration block diagram of a display device 200 according to an embodiment of the present application;

Fig. 15 is a schematic structural view of a display device 001 according to an embodiment of the present application;

Fig. 16 is a schematic structural view of a backlight driving module according to an embodiment of the present application;

Fig. 17 is a schematic structural view of another backlight driving module according to an embodiment of the present application;

FIG. 18 is a schematic block diagram of a flat cable according to an embodiment of the present application;

Fig. 19a is a side view of a submerged terminal according to an embodiment of the present application;

Fig. 19b is a front view of a submerged terminal according to an embodiment of the present application;

FIG. 20a is a schematic diagram of a buffer unit according to an embodiment of the present application;

FIG. 20b is a schematic block diagram of a buffer unit according to an embodiment of the present application;

Fig. 21 is a schematic structural view of a display device according to an embodiment of the present application;

Fig. 22 is a schematic structural view of a display device according to an embodiment of the present application;

FIG. 23a is a schematic view of a backlight according to an embodiment of the present application;

FIG. 23b is a schematic view of a backlight according to an embodiment of the present application;

FIG. 23c is a schematic view of a backlight according to an embodiment of the present application;

FIG. 23d is a schematic view of a backlight according to an embodiment of the present application;

fig. 24 is a schematic view of a backlight according to an embodiment of the present application;

fig. 25 is a schematic view of a backlight according to an embodiment of the present application;

FIG. 26 is a schematic view of a backlight according to an embodiment of the application;

FIG. 27 is a schematic view of a backlight according to an embodiment of the application;

FIG. 28 is a schematic view of a backlight according to an embodiment of the application;

fig. 29 is a schematic view of a backlight according to an embodiment of the present application;

FIG. 30 is a schematic view of a backlight according to an embodiment of the application;

fig. 31 is a schematic structural diagram of a backlight module according to an embodiment of the application.

Detailed Description

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application, in which the display device includes: the panel 10, the backlight assembly 20, the main board 30, the power board 40, the rear case 50, and the base 60. Wherein the panel 10 is used for presenting a picture to a user; the backlight assembly 20 is located below the panel 10, and is usually some optical assemblies, and is used for providing enough brightness and uniformly distributed light sources to enable the panel 10 to display images normally, the backlight assembly 20 further comprises a backboard 201, a main board 30 and a power board 40 are arranged on the backboard 201, convex hull structures are usually punched on the backboard 201, and the main board 30 and the power board 40 are fixed on the convex hull through screws or hooks; the rear case 50 is arranged on the panel 10 in a covering manner to hide the parts of the display device such as the backlight assembly 20, the main board 30, the power panel 40 and the like, thereby having an attractive effect; a base 60 for supporting the display device.

In some embodiments, the display device further includes a driving board. The power panel is used for supplying power to the driving panel, the backlight assembly and the main board. And the main board is used for receiving the image signals transmitted by the external server or the optical fiber and the like, generating driving signals through processing the image signals, and sending the driving signals to the driving board so that the driving board drives the backlight assembly to emit light.

In some embodiments, as a display panel in a display device increases, it is common to divide a backlight assembly into a plurality of light emitting areas in the display device, thereby implementing image display by multi-zone dimming.

In some embodiments, the backlight assembly and the driving board may be disposed on the same single panel, i.e., in a lamp driving integrated design.

Fig. 2 is a schematic design diagram of a driving chip according to an embodiment of the application. The driving chip in the figure is used for receiving the driving signal sent by the main board and controlling the backlight assembly to emit light according to the driving signal. In some examples, the drive signal includes a control signal and a clock signal. As shown in fig. 2, the driving chip includes two data signal interfaces (labeled MOSI and MISO in the figure) disposed on the left side of the chip, and a clock signal interface (labeled CLK in the figure), and 32 light-emitting area terminals (labeled LEDn in the figure), where n is an integer in the interval of 1 to 32, are disposed on the right side of the driving chip. In the figure, MOSI and CLK are respectively used for receiving control signals and clock signals for driving the light emitting region. LEDs 1-32 are each adapted to be connected to a corresponding light emitting region. The MISO may output the control signal as an input signal to the MOSI interface in the next driver chip. When the number of partitions of the light emitting area in the display device is large and the number of driving areas of the single driving chip shown in fig. 2 is insufficient, although it is theoretically possible to connect the data signal interfaces of the plurality of driving chips with the clock signal interface, that is, by adopting a connection manner as shown in fig. 3, fig. 3 is a schematic diagram of a cascade of driving chips according to an embodiment of the present application (it should be noted that the light emitting area in the embodiment of the present application may also be referred to as a light area, that is, a light area as shown in fig. 3 to 8 and as shown in fig. 11 and 12). When the scheme of realizing the lamp driving integration on the single panel, the cascade connection of the driving chips can be connected with the MOSI port of another driving chip by bypassing the wiring of the MISO interface of the current chip around the arrangement of the light emitting area on the right side of the chip, meanwhile, at the CLK input port of the current chip, one end connecting wire is also required to be connected with the CLK port of the next driving chip, which is matched with the number of the light emitting areas in the display device, but when the cascade connection of the driving chips is carried out on the actual single panel, the number of the light emitting areas is more because the connecting wire for transmitting signals is required to be designed between the single driving chip and the single light emitting area, and therefore, when the connecting wire between the data signal interfaces and the connecting wire between the clock signal interfaces during the cascade connection of the driving chips is designed, the connecting wire between the driving chips and the light emitting area and the space between the light emitting areas are required to be considered, so that the layout of the wiring on the single panel circuit board is more complicated.

In view of the above, the backlight module and the display device provided by the application include a circuit board, a driving chip disposed on the circuit board, and a plurality of light emitting areas corresponding to the driving chip. The driving chip is provided with a first pin, a third pin and a second pin and a fourth pin which are positioned on the first side of the driving chip and the second side of the driving chip; the first pin and the second pin are electrically communicated in the driving chip, and the third pin and the fourth pin are electrically communicated in the driving chip; the first side is arranged opposite to the second side; the driving chip is also provided with a plurality of control ends positioned at the third side of the driving chip; the plurality of control ends are correspondingly connected with the plurality of light-emitting areas. Based on the design of the driving chips, when a plurality of driving chips are cascaded, wires bypassing a light emitting area connected with the driving chips are not needed, and then, the wiring complexity of the plurality of driving chips is reduced when the backlight module integrated with the lamp driver is arranged on a single panel.

Fig. 4 is a schematic structural diagram of a backlight module according to an embodiment of the present application, where a display device includes a circuit board, a driving chip disposed on the circuit board, and a plurality of light emitting areas corresponding to the driving chip.

The pins in the driving chip in this embodiment are used for receiving and transmitting the control signal or the clock signal sent by the motherboard. As shown in the figure, the driving chip in this embodiment is provided with a first pin 1 and a third pin 3 located on a first side, and a second pin 2 and a fourth pin 4 located on a second side; wherein, the first pin 1 and the second pin 2 are in electrical communication inside the driving chip, and the third pin 3 and the fourth pin 4 are in electrical communication inside the driving chip.

As shown in fig. 4, in order to avoid that the driving chip needs to cross over multiple light emitting areas during cascading, in designing the driving chip interface in this embodiment, pins for transmitting control signals and clock signals may be considered to be respectively located on a first side and a second side opposite to the driving chip. And, a control terminal for connecting the light emitting region is provided at the third side of the driving chip. Specifically, as shown in the drawing, the first pin 1 is used for transmitting a control signal, and the third pin 3 is used for transmitting a clock signal in the driving chip. In order to facilitate wiring on the circuit board, when designing the pins of the driving chip, it is considered that the first pin 1 and the second pin 2 transmitting the control signal are respectively disposed at both sides of the driving chip, and the first pin 1 and the second pin 2 are electrically connected inside the driving chip. For example, in one example, it is conceivable to provide two leads at the control signal interface of the internal circuit of the driver chip, the end of one of the two leads forming the first pin 1 of the driver chip, leading from the first side of the driver chip; the end of the other lead forms a second pin 2 of the driver chip, leading out from the second side of the driver chip.

Similarly, a third pin 3 and a fourth pin 4 provided in the driving chip for transmitting clock signals are also provided on the first side and the second side of the driving chip, respectively, and the third pin 3 and the fourth pin 4 are in electrical communication inside the driving chip.

In addition, control terminals for connecting the light emitting areas are also provided on the driving chip (3 control terminals are provided in the figure, and 3 light emitting areas are correspondingly connected), and these control terminals are provided on the third side of the driving chip, i.e. not on the same side as the first pin 1 and the second pin 2. Furthermore, when a plurality of driving chips are required to be cascaded later, the driving chips can be directly connected and arranged through pins arranged on the first side and the second side of the driving chips, and wiring is not required to cross the light-emitting area on the third side.

Fig. 5 is a schematic diagram of a cascade structure of driving chips according to an embodiment of the present application, in which chips arranged in rows are provided. In the figure, the row includes 4 driving chips, and each driving chip includes two control ends, and the two control ends are respectively connected with two light emitting areas. The first pin 1 and the third pin 3 of the first driving chip located at the first side of the row are respectively used for receiving control signals and clock signals transmitted from the outside (e.g. a motherboard) of the circuit board. And the first pin 1 and the third pin 3 of the other driving chips in the row are respectively connected with the second pin 2 and the fourth pin 4 of the previous driving chip.

When the backlight module is required to work, after the first driving chip in the row receives the control signals and clock signals input by the main board through the first pin 1 and the second pin 2, the control signals and clock signals corresponding to the light-emitting areas can be determined from the control signals and clock signals according to the identification of the light-emitting areas connected with the driving chip so as to drive the light-emitting areas to emit light. And the control signal and the clock signal of the first driving chip are input to the main board, and the control signal and the clock signal for controlling the rest of the light-emitting areas in the row can be respectively output through the second pin and the fourth pin of the first driving chip, and the output control signal and the clock signal are respectively output to the first pin and the third pin of the second driving chip connected with the second pin and the fourth pin of the first driving chip, so that the control signal and the clock signal are sequentially transmitted to each driving chip to enable the light-emitting areas corresponding to each driving chip to emit light.

In this embodiment, based on the design of the pins of the driving chips, when the driving chips are cascaded, pins corresponding to clock signals and control signals can be directly connected, and wires bypassing a light emitting area connected with the driving chips are not needed when the pins are connected, so that the wiring complexity of the cascade connection of the driving chips is reduced when the integrated design of the lamp driver is realized on a single panel.

On the basis of the design of the pins of the driving chips in the embodiment, when a plurality of driving chips arranged in an array are arranged on the circuit board, at this time, the first pins 1 and the second pins 2 between the driving chips in the same row are sequentially connected, and the third pins 3 and the fourth pins 4 are sequentially connected; when the driving chips positioned at the tail of different rows are connected, a second pin 2 and a second pin 2 between the driving chips are connected, a fourth pin 4 and a fourth pin 4 are connected, and the second pin 2 between the driving chips are connected by using a cross wire, or the fourth pin 4 and the fourth pin 4 between the driving chips are connected by using a cross wire; when the first driving chips positioned in different rows are connected, the first pins 1 and the first pins 1 between the driving chips are connected, the third pins 3 and the third pins 3 are connected, and the first pins 1 between the driving chips are connected by using a cross wire or the third pins 3 and the third pins 3 between the driving chips are connected by using a cross wire.

Fig. 6 is a schematic diagram of a driving chip cascade according to another embodiment of the present application. In the figure, for example, 16 driving chips are arranged in an array, and each driving chip is provided with two control ends on the third side for driving the corresponding light-emitting area. When the driving chips arranged in the array are connected, the connection mode between the driving chips positioned in the same row still adopts the connection mode that the first pin 1 and the second pin 2 between the adjacent driving chips are connected, and the third pin 3 and the fourth pin 4 are connected. When the driving chips of different rows are connected, if the two driving chips are at the tail of the row, at the moment, the second pin 2 between the two driving chips is correspondingly connected with the second pin 2, and the fourth pin 4 is correspondingly connected with the fourth pin 4. In addition, when wiring is performed on the circuit board, the connection line between the second pins 2 and the connection line between the fourth pins 4 of the two driving chips are overlapped in a crossing manner, so that a cross-line connection manner can be adopted at the crossing point of the two connection lines.

Similarly, when the first driving chips in different rows are connected, the first pin 1 and the first pin 1 between the two chips need to be correspondingly connected, and the third pin 3 correspondingly connected. In addition, when two connecting wires are wired on the circuit board, a wiring cross point is also generated, so that a cross-line connection mode is also needed, and the problem of overlapping of wires on the circuit board is further avoided.

When the wiring is prevented from overlapping by adopting the mode of cross-wire connection on the circuit board, the overlapping of the wirings can be prevented by setting the cross-wire mode. For example, two wires may be routed directly on a circuit board at a meeting point on the circuit board, and one wire may be routed over the meeting point by a connecting wire such as a wire at the meeting point, thereby avoiding overlapping of the wires. In some examples, the connection lines for crossover may also be replaced with crossover resistors when the crossover is connected.

Taking the first pin 1 and the second pin 2 for transmitting control signals, the third pin 3 and the fourth pin 4 for transmitting clock signals as an example, when the driving chips at the end of the first row and the end of the second row shown in fig. 5 are connected, the wires between the fourth pin 4 and the fourth pin 4 for transmitting clock signals are directly arranged on the circuit board, and the wires between the second pin 2 and the second pin 2 for transmitting control signals adopt a crossover resistor at the intersection point between the two wires so that the wires cross the coincident point. Likewise, between the first driving chips of the second row and the third row, the third pin 3 and the third pin 3 are directly wired on the circuit board, and the first pin 1 are connected by using an overline resistor at a wire overlapping point.

Fig. 7 is a schematic diagram of a cascade structure of a driving chip according to an embodiment of the present application, and in fig. 7, when pins of the last driving chip between different rows are connected by overwiring, the overwiring is used to connect the fourth pins 4 for transmitting clock signals, compared with fig. 6. When the pin connection of the first driving chip between different rows is connected in a cross-line mode, the cross-line mode is adopted for connecting the connection between the third pins 3 for transmitting clock signals.

In some embodiments, pins between driving chips of different rows in the backlight module can randomly select wiring between any group of pins for cross-line connection without considering signals transmitted on the pins.

In this embodiment, when more light emitting areas need to be driven, multiple driving chips may be arranged in an array, and when pins between driving chips in different rows are connected, an overline connection process is required to be performed at an overlapping point when pins of driving chips in different rows are connected, so as to avoid overlapping of wirings on a circuit board. In this embodiment, based on the pin arrangement of the driving chips provided in the embodiment of the present application, when the driving chips are arranged in an array, the operation complexity that the wires for transmitting control signals and clock signals between the driving chips need to cross a plurality of light emitting areas can be reduced.

Fig. 8 is a schematic structural diagram of another backlight module according to an embodiment of the application. On the basis of the pin arrangement of the driving chip shown in fig. 4, the driving chip in this embodiment is further provided with a fifth pin 5 and a sixth pin 6; the first pin 1, the third pin 3 and the fifth pin 5 are sequentially arranged on the first side of the driving chip; the second pin 2, the fourth pin 4 and the sixth pin 6 are sequentially arranged on the second side of the driving chip; the first pin 1, the second pin 2, the fifth pin 5 and the sixth pin 6 are electrically connected inside the driving chip.

As shown in fig. 8, the driving chip in the backlight module provided in the present embodiment is provided with a first pin 1, a second pin 2, a third pin 3, a fourth pin 4, a fifth pin 5, and a sixth pin 6. The first pin 1, the second pin 2, the fifth pin 5 and the sixth pin 6 are electrically connected inside the driving chip and are used for transmitting the same kind of signals. And the third pin 3 and the fourth pin 4 are electrically connected inside the driving chip and used for transmitting the same signals. In addition, when the pins are arranged, the first pin 1, the third pin 3 and the fifth pin 5 are arranged on the first side of the driving chip in sequence, namely, the third pin 3 for transmitting another signal is arranged between the first pin 1 and the fifth pin 5 for transmitting the same signal. Similarly, on the second side of the driving chip, the second pin 2, the fourth pin 4 and the sixth pin 6 are sequentially arranged, that is, the fourth pin 4 for transmitting another signal is disposed between the second pin 2 and the sixth pin 6 for transmitting the same signal.

In some embodiments, the first pin 1, the second pin 2, the fifth pin 5 and the sixth pin 6 are used for transmitting control signals of a light emitting area in the backlight module; the third pin 3 and the fourth pin 4 are used for transmitting clock signals of the light emitting area in the backlight module.

In some embodiments, the first pin 1, the second pin 2, the fifth pin 5 and the sixth pin 6 are used for transmitting clock signals of the light emitting area in the backlight module; the third pin 3 and the fourth pin 4 are used for transmitting control signals of the light emitting area in the backlight module.

When cascade connection is performed on the circuit board using the driving chip in the present embodiment, arrangement may be performed in the manner shown in fig. 9. Fig. 9 is a schematic diagram of a fourth cascade of driver chips according to an embodiment of the application. When there are multiple driving chips arranged in a row, at this time, the first driving chip located in the row may use the third pin 3 to receive an externally input clock signal, and use the first pin 1 or the fifth pin 5 of the driving chip to receive an externally input control signal, where the third pins 3 of the remaining driving chips in the row are connected to the fourth pin 4 of the preceding chip, and are used for transmitting the clock signal. When transmitting the control signal, the connection relationship between the driving chips in the row may be that the first pin 1 of the driving chip is connected with the second pin 2 of the previous chip or that the fifth pin 5 of the driving chip is connected with the sixth pin 6 of the previous chip. The control terminal of the third side of the driver chip and the light emitting area are not shown in the figure.

According to the pin design of the driving chip in the backlight module, when a plurality of driving chips are cascaded in rows, wiring design of connecting wires for transmitting clock signals and control signals among the driving chips on a circuit board does not need to bypass connecting wires between a light-emitting area positioned on the third side of the driving chip and the driving chip, and the problem that wiring design is complex when the driving chips are cascaded on the circuit board in the related art is avoided.

In some embodiments, based on the pin design in the driving chips in the backlight module of fig. 8, when a plurality of driving chips arranged in an array are required to be disposed on the circuit board, at this time, when the plurality of driving chips located in the same row are connected, the third pins 3 and the fourth pins 4 between the driving chips are sequentially connected; the first pin 1 and the second pin 2 between the driving chips are sequentially connected, or the fifth pin 5 and the sixth pin 6 are sequentially connected; when the driving chips positioned at the tail of different rows are connected, a fourth pin 4 among the driving chips is connected with the fourth pin 4, and a second pin 2 among the driving chips is connected with a sixth pin 6; when the first driving chips in different rows are connected, the third pins 3 among the driving chips are connected with the third pins 3, and the first pins 1 among the driving chips are connected with the fifth pins 5.

Fig. 10 is a schematic diagram of a fifth driving chip cascade according to an embodiment of the present application. The figure is provided with 16 driving chips. When the driving chips arranged in the array are connected, the connection mode between the driving chips in the same row still adopts the mode that the third pin 3 and the fourth pin 4 between the adjacent driving chips are connected to transmit one signal (for example, a clock signal) and the other signal (for example, a control signal) is transmitted, and the mode that the first pin 1 and the second pin 2 or the fifth pin 5 and the sixth pin 6 between the adjacent driving chips are connected is considered.

When the driving chips of different rows are connected, if the two driving chips are at the tail of the row, at this time, in order to avoid the coincidence of the wires between the pins when the two driving chips are connected, on the basis that the fourth pin 4 of the two driving chips is connected with the fourth pin 4, the second pin 2 of one driving chip of the two driving chips can be considered to be connected with the sixth pin 6 of the other driving chip, or the sixth pin 6 of one driving chip is connected with the second pin 2 of the other driving chip, so that the phenomenon of cross overlapping of the wires between the connected driving chips on the circuit board can not occur.

Likewise, when the driving chips positioned at the first lines of different rows are connected, in order to avoid the coincidence of the connecting lines between the pins when the two driving chips are connected, on the basis that the third pin 3 of the two driving chips is connected with the third pin 3, the first pin 1 of one driving chip of the two driving chips is considered to be connected with the fifth pin 5 of the other driving chip, or the fifth pin 5 of one driving chip is connected with the first pin 1 of the other driving chip, so that the phenomenon of cross overlapping of the wiring between the connected driving chips on the circuit board can not occur.

In this embodiment, when the driving chip shown in fig. 8 is adopted and a plurality of driving chips arranged in an array are disposed on the driving chip, that is, the driving chips can be directly connected to corresponding pins for transmitting the same signal when being cascaded across rows, a mode that wiring overlaps and needs to be connected across lines does not occur. And further, when the overline resistor is adopted for connection, the reflection plate arranged above the light-emitting area in the backlight module is prevented from being bulged when the temperature of the overline resistor is higher, and the adjustment effect of the reflection plate on the light direction of the light-emitting area is easily affected.

In some embodiments, when the light emitting area is connected to the driving chip, in one possible implementation manner, one end of the light emitting area is connected to the driving chip by adopting a wiring on the circuit board, and the other end of the light emitting area is also directly connected to the driving chip through the wiring on the circuit board, so that a conductive loop is formed on the driving chip and the light emitting area.

In some embodiments, the plurality of control terminals disposed on the third side of the driving chip includes a common terminal and a plurality of output terminals; one end of the plurality of light-emitting areas corresponding to the driving chip is connected to the common end of the driving chip, and the other ends of the plurality of light-emitting areas corresponding to the driving chip are respectively connected to the plurality of output ends of the driving chip.

The driving chip in this embodiment may correspond to a plurality of light emitting areas, and one common terminal and a plurality of output terminals are provided in a plurality of control terminals on the third side of the driving chip when the driving chip is connected to the plurality of light emitting areas. The plurality of output ends are in one-to-one correspondence with the plurality of light emitting areas, and the other ends of the plurality of light emitting areas are connected to the control ends corresponding to the plurality of output ends. The common terminal of the plurality of control terminals serves as a common wiring port of the plurality of light emitting regions, and one end of each of the plurality of light emitting regions is connected to the common terminal. For each light-emitting area, a conductive loop of a control end of the driving chip, the other end of the light-emitting area, one end of the light-emitting area and a common end of the driving chip is formed, so that the driving chip can control the light-emitting area.

The same common terminal may be used between the plurality of light emitting regions on a single driving chip in this embodiment. Also, the plurality of light emitting regions in the present embodiment may adopt a common anode wiring or a common cathode wiring. When the light-emitting area adopts a common anode wiring mode, one end of the light-emitting area can be a positive common terminal, and then the positive common terminal of the light-emitting area is connected with a common terminal on a corresponding driving chip. When the light-emitting area adopts a common cathode wiring mode, one end of the light-emitting area can be a negative common terminal, and then the negative common terminal of the light-emitting area is connected with a common terminal on a corresponding driving chip.

In this embodiment, a common terminal is disposed in the control terminal of the third side of the driving chip, so that one ends of the light emitting areas can be connected to the same common terminal, and the other ends of the light emitting areas are connected to the output terminals of the control terminal in a one-to-one correspondence manner. Furthermore, through the connection mode, the arrangement of pins in the driving chip can be simplified, and the connection is convenient.

In some embodiments, the driving chip is further provided with a plurality of control terminals located at a fourth side of the driving chip; the control ends are correspondingly connected with the light-emitting areas.

Fig. 11 is a schematic structural view of a backlight module according to another embodiment of the application. In the drawing, a driving chip provided on a circuit board includes a first pin 1 and a third pin 3 provided on a first side and a second pin 2 and a fourth pin 4 provided on a second side. In addition, a plurality of control terminals are respectively disposed on the third side and the fourth side of the driving chip, 3 control terminals are disposed on the third side of the driving chip in fig. 9, and 3 control terminals are disposed on the other side of the driving chip. The 6 control terminals may be connected to the corresponding 6 light emitting areas provided on the circuit board, respectively.

In this embodiment, a plurality of light emitting areas may be connected to the third side and the fourth side of the driving chip, so that when the number of light emitting areas driven by a single driving chip is increased, the arrangement of the light emitting areas does not affect the connection between the driving chips in rows or in arrays, that is, the connection between the driving chips does not need to span the light emitting areas and the connection lines between the light emitting areas and the driving chips.

Fig. 12 is a schematic structural diagram of a backlight module according to an embodiment of the present application, wherein a plurality of control terminals disposed on a third side of a driving chip of a circuit board include a first common terminal, a first output terminal and a second output terminal; the plurality of control ends positioned on the fourth side of the driving chip comprise a second common end, a third output end and a fourth output end;

The driving chip is correspondingly provided with a first light-emitting area, a second light-emitting area, a third light-emitting area and a fourth light-emitting area; one end of the first light-emitting area and one end of the second light-emitting area are respectively connected to the first common end; the other end of the first light-emitting area is connected to the first output end; the other end of the second light-emitting area is connected to a second output end; one end of the third light-emitting area and one end of the fourth light-emitting area are respectively connected to the second common end; the other end of the third light-emitting area is connected to a third output end; the other end of the second light emitting region is connected to the fourth output terminal.

As shown in fig. 12, 16 driving chips are arranged in an array, and each driving chip includes a first common terminal, a first output terminal, a second common terminal, a third output terminal, and a fourth output terminal, which are disposed on a third side of the driving chip, in addition to six pins disposed on the first side and the second side. The first output end and the second output end on the third side of the driving chip are respectively connected with the other end of the first light-emitting area (light-emitting area 1 in the figure) and the other end of the second light-emitting area (light-emitting area 2 in the figure) corresponding to the driving chip, and the first common end on the third side of the driving chip is connected to one end of the first light-emitting area and one end of the second light-emitting area, so that a conductive path is formed between the first light-emitting area and the second light-emitting area and the driving chip respectively.

Similarly, the third output end and the fourth output end on the fourth side of the driving chip are respectively connected with the other end of the third light emitting region (light emitting region 3 in the figure) and the other end of the fourth light emitting region (light emitting region 4 in the figure) corresponding to the driving chip, and the second common end on the fourth side of the driving chip is connected to one end of the third light emitting region and one end of the fourth light emitting region, so that conductive paths are formed between the third light emitting region and the fourth light emitting region and the driving chip respectively.

In some embodiments, when the first common terminal and the second common terminal are provided, in order to avoid that when the light emitting area is connected to the first common terminal or the second common terminal, the connection between the light emitting area and the common terminal needs to cross the other light emitting areas, and thus, the first common terminal may be provided between the first output terminal and the second output terminal; the second common terminal is arranged between the third output terminal and the fourth output terminal, so that the wiring design on the circuit board is simplified.

In the backlight module provided in this embodiment, the pins for transmitting clock signals in the driving chip are respectively disposed on the first side and the second side in the driving chip, the pins for transmitting control signals are also respectively disposed on the first side and the second side of the driving chip, and the common end and the output end connected to the light emitting area are respectively disposed on the third side and the fourth side of the driving chip, so that the driving chip does not need to cross the light emitting area connected to the driving chip and the connection line between the driving chip and the light emitting area during cascading, thereby facilitating cascading of the driving chip. In addition, in the driving chip, the third side and the fourth side are respectively provided with a first public end and a second public end, the first public end can be adopted by the first light-emitting area and the second light-emitting area which are connected to the third side, the second public end can be adopted by the third light-emitting area and the fourth light-emitting area which are connected to the fourth side, the first public end can be arranged between the first output end and the second output end, the second public end can be arranged between the third output end and the fourth output end, and the connection line between the light-emitting area and the driving chip is facilitated. Through the arrangement, when the number of the light-emitting areas is divided more, more driving chips can be used for cascading to meet the number of the light-emitting areas.

The display device provided by the embodiment of the application comprises: the backlight module, the main board and the power supply in any embodiment; the power supply is connected with the backlight module and the main board and is used for providing power supply signals; the main board is connected with the backlight module and is used for sending control signals and clock signals to the backlight module so that the backlight module emits light based on the clock signals and the control signals.

In the related art, the display image quality is often improved by a multi-partition local dimming technology of a television backlight, so as to meet the high requirement of a user on the image quality of a display picture.

In the multi-partition local dimming technology, the brightness of the LED lamp groups in the control partitions is accurately controlled through the driving controllers, the LED lamp groups in each partition are arranged on one lamp panel, the lamp panels of each partition are spliced to form a backlight lamp panel of the display device, the driving controllers corresponding to the LED lamp groups in each group are arranged on a single substrate, and then the substrates of the driving controllers are adhered to the back surfaces of the lamp panels of the LED lamp groups.

In this case, the cost of the substrate and the lamp panel is large, resulting in a high cost of the backlight driving circuit.

Fig. 13 is a schematic view of an operation scene between a display device and a control apparatus according to an embodiment of the present application. As shown in fig. 13, a user may operate the display apparatus 200 through the mobile terminal 300 and the control device 100.

In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes infrared protocol communication or bluetooth protocol communication, and other short-range communication modes, etc., and the display device 200 is controlled by a wireless or other wired mode.

The display device 200 may be a liquid crystal display, an OLED display, a projection display device. The particular display device type, size, resolution, etc. are not limited, and those skilled in the art will appreciate that the display device 200 may be modified in performance and configuration as desired.

Fig. 14 is a hardware configuration block diagram of the display device 200 according to the embodiment of the present application.

In some embodiments, at least one of the controller 250, the modem 210, the communicator 220, the detector 230, the input/output interface 255, the display 275, the audio output interface 285, the memory 260, the power supply 290, the user interface 265, and the external device interface 240 is included in the display apparatus 200.

In some embodiments, as shown in fig. 14, the input/output interface 255 is configured to enable data transfer between the controller 250 and an external other device or other controller 250. Such as receiving video signal data and audio signal data of an external device, command instruction data, or the like.

In some embodiments, external device interface 240 may include, but is not limited to, the following: any one or more interfaces of a high definition multimedia interface HDMI interface, an analog or data high definition component input interface, a composite video input interface, a USB input interface, an RGB port, and the like can be used. The plurality of interfaces may form a composite input/output interface.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored on the memory. The controller 250 may control the overall operation of the display apparatus 200. For example: in response to receiving a user command to select to display a UI object on the display 275, the controller 250 may perform an operation related to the object selected by the user command.

As shown in fig. 14, the controller 250 includes at least one of a random access Memory 251 (Random Access Memory, RAM), a Read-Only Memory 252 (ROM), a video processor 270, an audio processor 280, other processors 253 (e.g., a graphics processor (Graphics Processing Unit, GPU), a central processing unit 254 (Central Processing Unit, CPU), a communication interface (Communication Interface), and a communication Bus 256 (Bus), which connects the respective components.

The power supply 290 supplies power input from an external power source to the display device 200 under the control of the controller 250. The power supply 290 may include a built-in power circuit installed inside the display device 200, or may be an external power source installed in the display device 200, and a power interface for providing an external power source in the display device 200.

The user input interface 265 is used to receive an input signal of a user and then transmit the received user input signal to the controller 250. The user input signal may be a remote control signal received through an infrared receiver, and various user control signals may be received through a network communication module.

In some embodiments, a user inputs a user command through the control apparatus 100 or the mobile terminal 300, the user input interface is then responsive to the user input through the controller 250, and the display device 200 is then responsive to the user input.

As mentioned above, the driving assembly for driving the display device to display an image may be disposed in the display 275 or may be disposed in the controller 250, which is not limited by the present application.

At present, the display image quality is often improved by a multi-partition local dimming technology of a television backlight so as to meet the high requirement of a user on the image quality of a display picture. In the multi-partition local dimming technology, a control board controls a plurality of driving chips, so that each driving chip can perform accurate brightness control on a light-emitting diode (LED) lamp group, typically a mini (mini) LED lamp group, in one partition. Because the control panel is connected through a terminal and a plurality of driving chips and leads to the connection of backlight driving system comparatively complicated for driving chip and banks in every subregion are arranged respectively on a printed circuit board (Printed Circuit Board, PCB), with two PCB laminating in order to reduce backlight driving module's volume again. In this case, the cost of the backlight driving module is high.

In view of the above technical problems, an embodiment of the present application provides a backlight driving module, in which a plurality of terminals (i.e., a plurality of first terminals hereinafter) are introduced into a control circuit of the backlight driving module, so that the control circuit of the backlight driving module is respectively connected with a plurality of backlight driving circuits through the plurality of terminals, thereby reducing the circuit complexity of the backlight driving circuits, further reducing the area of a PCB board, and reducing the cost of the backlight driving module.

In an embodiment of the present application, the backlight driving module may be a driving module for driving image display in the display 275 shown in fig. 14. Of course, it is not excluded that some devices in the backlight driving module are disposed in the controller, and some devices are disposed in the display, for example, a control circuit (e.g., a control board) in the backlight driving module is disposed in the controller 250 in fig. 14, and a driving controller and a light group in the backlight driving module are disposed in the display 275 in fig. 14.

Fig. 15 is a schematic structural view of a display device 001 according to an embodiment of the present application. In order to reduce the cost of the backlight driving circuit, the embodiment of the application provides a display device 001.

In the embodiment of the application, the backlight module can be called as a backlight driving module, and the backlight driving module comprises a control circuit and a plurality of backlight driving circuits; the backlight driving circuit includes: the LED lamp comprises a substrate, a driving unit and a plurality of LED lamp groups. The substrate is a substrate of the circuit board, and the driving unit comprises the driving chip and a peripheral circuit.

As shown in conjunction with fig. 15, the display device 001 includes: backlight driving module 010, power panel 020 and main board 030. The power board 020 and the main board 030 are connected to a control chip 0111 of a control circuit 011 of the backlight driving module 010.

Alternatively, the power board 020 and the main board 030 may be both circuit boards, and the power board and the main board may be integrated on the same circuit board, or the power board and the main board may be separate circuit boards, which is not limited in the present application.

The backlight driving circuit 012 in the backlight driving module 010 is configured to provide backlight luminance for one display region of the display device 001.

A power board 020 for supplying power to a backlight driving circuit 012 in the backlight driving module 010 through a control chip 0111;

a main board 030 for sending a partition control signal to the control chip 0111;

The control chip 0111 is configured to perform signal interaction with the backlight driving circuit 012 corresponding to the partition control signal according to the partition control signal, so as to control backlight brightness of the display area.

An exemplary description of the backlight driving module 010 in the embodiment shown in fig. 15 is given below.

Fig. 16 is a schematic structural diagram of a backlight driving module according to an embodiment of the application. As shown in fig. 16, the backlight driving module 010 includes a control circuit 011 and a plurality of backlight driving circuits 012.

Wherein the control circuit 011 includes a control chip 0111 and a plurality of first terminals. One first terminal corresponds to one backlight driving circuit 012, in other words, the control circuit 011 can be connected to the corresponding backlight driving circuit 012 through one first terminal.

The control circuit 011 can interact with each backlight driving circuit 012, which includes power supply-related signals and driving control-related communication signals.

It will be appreciated that one backlight driving circuit 012 is used to control backlight brightness of one display region, and that a plurality of display regions controlled by a plurality of backlight driving circuits 012 may constitute a display region of the display device 001 to achieve complete presentation of a screen to be displayed by the display device 011.

The control circuit 011 may be disposed on a control board of a display device (e.g., a television), for example, the control board and the main board may be integrated into one circuit board, or the control board and the main board may be separate circuit boards.

One backlight driving circuit 012 of the plurality of backlight driving circuits 012 may be disposed on one PCB board, for example.

In this embodiment, the control chip is connected to the plurality of backlight driving circuits through the plurality of first terminals, and compared with the control chip connected to all the backlight driving circuits through one terminal, the circuit complexity of the backlight driving circuits is reduced, and the area of the circuit board is saved.

Fig. 17 is a schematic structural diagram of another backlight driving module according to an embodiment of the present application. As shown in fig. 17, the backlight driving module 010 includes a control circuit 011 and a plurality of backlight driving circuits 012.

The control circuit 011 is similar to that of the embodiment shown in fig. 16, and will not be described here again.

Each of the backlight driving circuits 012 in the present embodiment includes: a substrate 0121, a driving unit 0122 and a plurality of LED lamp groups 0123. Wherein, the driving unit 0122 and the plurality of LED lamp groups 0123 are arranged on the substrate 0121 and are positioned on the same layer of the substrate. In the embodiment of the application, the driving unit and the LED lamp groups are arranged on the same layer of the substrate, so that compared with the driving unit and the LED lamp groups which are respectively arranged on one substrate, the cost of the substrate is saved, and the cost is reduced.

The substrate may be, for example, an aluminum substrate with a PCB disposed thereon, or simply a PCB. The driving unit 0122 and the plurality of LED lamp groups 0123 are both disposed on the substrate 0121, and the driving unit 0122 may be integrated on the lamp panel where the plurality of LED lamp groups 0123 are located.

In general, the substrate and the control board are independent of each other, and the substrate and the control board are connected by terminals.

Wherein, the driving unit 0122 may include a driving controller and a second terminal, and the driving controller is connected with the plurality of LED lamp groups. A first terminal of the control circuit 011 and a second terminal of the driving unit 0122 may be connected. The control chip 0111 may be further connected to the driving controller through the first terminal and the second terminal, so as to interact with the driving controller by signals, where the signals include: power supply related signals and drive control related communication signals.

Optionally, the drive controller is a drive control chip.

In some embodiments, the power-related signals may include at least one of a Signal that provides power to the LED, a Signal that provides power to the drive controller, a Feedback Signal (FB) of the power supply, and a Ground (GND) Signal, for example.

Optionally, the driving control related communication signal may include at least one signal of a Serial peripheral interface (SERIAL PERIPHERAL INTERFACE, SPI) signal group, for example, the SPI signal group may include a Serial Clock line (SCK) signal, a Serial data Input (SERIAL DATA Input, SDI) signal, a Serial data output (SERIAL DATA output, SDO) signal, a chip select (CHIP SELECT, CS) signal, and the like, for example.

The above-listed power-related signals and drive control-related communication signals are examples and not intended to be limiting.

It can be understood that one driving controller is used for controlling the backlight brightness of one display area, that is, one driving controller is used for controlling the brightness of a plurality of corresponding LED lamp groups, so that the brightness of the display area is adjusted, and a plurality of display areas controlled by a plurality of driving controllers can form the display area of the display device 001, so that the complete display of the picture to be displayed by the display device 011 is realized.

Alternatively, the drive controller may be a 32-way integrated LED drive controller, or a 16-way integrated LED chip. It is understood that 32 integrated LED driving controllers may be connected to 32 LED lamp groups, and 16 integrated LED driving controllers may be connected to 16 LED lamp groups.

In this embodiment, the driving unit and the plurality of LED lamp groups are disposed on the same layer of the substrate, which saves substrate overhead and reduces cost compared with the driving unit and the plurality of LED lamp groups which are disposed on one substrate respectively.

In some embodiments, the driving controller and the second terminal may be connected through a plurality of signal lines disposed on the substrate 0121, and the second terminal and the first terminal may be connected through a flat cable, the flat cable including the plurality of signal lines.

As shown in fig. 18, three signal lines are connected between the driving controller and the second terminal. Illustratively, each signal line is used to transmit a signal, e.g., three signal lines are used to transmit a clock signal, a data input signal, and a data output signal, respectively.

As shown in fig. 18, the signal lines are isolated by a ground line, and the flat cable is located between the ground lines on the driving controller side and connected to the ground terminal of the substrate by a bottom-crossing line, so as to implement the ground-packing processing of different signals.

The arrangement sequence of the plurality of signal lines is consistent with the arrangement sequence of pins used for transmitting corresponding signals in the driving controller. Ensuring that the signal lines do not cross each other.

The flat cable may be, for example, a flexible flat cable (Flexible Flat Cable, FFC) flat cable.

In some embodiments, the second terminal is disposed on the substrate in a sinking manner, or is embedded in the substrate. Referring to the side view of the substrate 0121 shown in fig. 19a and the front view shown in fig. 19b, the second terminal is embedded in the substrate, so that the flat cable can be connected with the second terminal from the back of the substrate, and further, the flat cable is convenient to be connected to the chip from the outer side of the backlight driving circuit, and no interference is caused to the driving controller and the LED lamp set disposed on the front of the substrate.

Optionally, since the terminal is sinking, in order to avoid affecting the mechanical strength of the terminal when the wire is pressed, the direction of the second terminal for connecting the flat cable has an inclination angle with respect to the substrate, and the direction of the wire is prevented from being perpendicular to the substrate.

Since each driving controller corresponds to one second terminal and one first terminal, there will be many interfaces for SPI communication of the control chip, typically several or tens of interfaces. However, the SDO signal in the SPI communication is sent by the driving controller itself, so that the driving capability is insufficient, and after passing through a long connection line (e.g. a flat cable), the data transmission is often abnormal due to time delay. Taking fig. 20a as an example, 8 SDOs compose one SDO input control chip, and the data delay is larger under the influence of the capacitance.

It should be understood that the SDO signal is only an example of a data output signal, and does not limit the present application in any way, and the SDO signal in the above-described embodiment may be replaced by any data output signal.

In view of the above-described problems, this embodiment configures a buffer unit in the control circuit 011 on the basis of any of the foregoing embodiments. Referring to fig. 20b, a buffer unit 0112 is disposed between a plurality of first terminals of the control circuit 011 and the control chip 0111, and the buffer unit 0112 includes a plurality of buffer sub-units 0113, each buffer sub-unit 0113 is connected to the plurality of first terminals through a signal line for transmitting data output signals to acquire and combine the data output signals of the plurality of first terminals, and transmits the combined data output signals to the control chip 0111.

For example, as shown in fig. 20b, it is assumed that the control chip is connected to 8 driving controllers through 8 first terminals, each driving controller outputs 8 data output signals through one pin of the first terminals (such as any one pin of the ICs 1 to 8 in fig. 8 b), the buffer subunit 0113 in the buffer unit 0112 combines the 4 data output signals output from the ICs 1 to 4 and then sends the combined 4 data output signals output from the ICs 5 to 8 to the control chip 0111, and the buffer subunit 0114 combines the 4 data output signals output from the ICs 5 to 8 and then sends the combined 4 data output signals to the control chip 0111.

In some embodiments, the buffer subunit includes a buffer and a diode. For example, the buffer subunit 0113 in fig. 20b includes a buffer 0115 and a diode 0117, and the buffer subunit 0114 includes a buffer 0116 and a diode 0118.

The input end of the buffer is connected with a plurality of first terminals through signal lines for transmitting data output signals, the output end of the buffer is connected with the cathode of a diode, and the anode of the diode is connected with a control chip. For example, in fig. 20, an input terminal of the buffer 0113 is connected to data output pins of the plurality of first terminals through a signal line, an output terminal of the buffer 0113 is connected to a cathode of the diode 0117, and an anode of the diode 0117 is connected to the control chip 0111. The connection of the buffer 0114 is similar to that of the buffer 0113, and will not be described here again.

In some embodiments, buffer unit 0112 further comprises: the pull-up resistor 0119, the control circuit 011 further includes: a power supply terminal 0120;

One end of the pull-up resistor 0119 is connected to the power terminal 0120, and the other end of the pull-up resistor 0119 is connected to the anode of each diode (e.g., 0117 and 0118).

It should be noted that, the output terminals of the buffers (such as the buffers 0113 and 0114 in fig. 20 b) are directly connected to cause common problems, so that the diode may be added to the output terminal of each buffer for isolation, and the common problems may be avoided after the effect of the pull-up resistor.

The display device may include the following steps when performing the split driving:

The main board can send a partition control signal to a control chip in the control circuit, the control chip generates a control signal (namely a communication signal related to the driving) of each backlight driving circuit according to the partition control signal, and sends each control signal to a corresponding backlight driving circuit, and a driving controller in each backlight driving circuit controls a plurality of connected LED lamp groups to be on or off according to the received control signals and controls the brightness of each LED lamp group, so that the control of the backlight brightness of a display area is realized.

A liquid crystal display device is a passive display device that requires a backlight to provide a backlight to display an image, and the backlight can be classified into a side-in type and a direct type based on an installation position of the backlight. The side-in type backlight source is positioned on the side face of the screen, and the back face area of the screen is lightened through the light guide plate; the direct type is that the pointing array backlight source is positioned at the back of the screen, and the back area of the screen is directly lightened. The regional dimming technology is characterized in that backlight sources are partitioned, the brightness degree of the backlight sources in each region is independently controlled, the backlight control is finer, and the image quality performance is greatly improved.

However, as the size of the display device increases, the size of the backlight increases, so that the backlight area increases, resulting in a relatively complex hardware structure of the display device.

Fig. 21 is a schematic structural diagram of a display device according to an embodiment of the present application, in order to reduce complexity of a hardware structure of the display device, as shown in fig. 21, the display device provided by the embodiment of the present application includes: backlight 0010, optical film 0020, back plate 0030 and display screen 0040, wherein the backlight 0010, optical film 0020 and back plate 0030 belong to a backlight module. The optical film 0020 is located on one side of the back plate 0030, the backlight 0010 is located on the side of the optical film 0020 remote from the back plate 0030, and the display screen 0040 is located on the side of the backlight 0010 remote from the back plate 0030.

The display screen 0040 is used for displaying images to a user, the backlight 0010 is located between the display screen 0040 and the optical film 0020, the optical film 0020 is located between the backlight 0010 and the back plate 0030, and the backlight 0010 is matched with the optical film 0020 to provide a light source with sufficient brightness and uniform distribution, so that the display screen 0040 can display images normally. Some convex hull structures are usually stamped and formed on the back plate 0030, and a main board and a power panel of the display device are fixed on the convex hull through screws or hooks. In some embodiments, the display device may further include a rear housing, where the rear housing is disposed on the display screen 0040, so as to hide the optical film 0020, the backlight 0010, the motherboard, and components of the display device such as the power panel, for an attractive effect.

The backlight 0010 may also be installed on the back of the display screen 0040, that is, a direct type backlight, as shown in fig. 21, where the backlight 0010 is installed on the back of the display screen 0040 and the light emitting surface of the backlight 0010 is opposite to the display area, and the light beam emitted by the backlight 0010 can directly light the area opposite to the display area, so as to provide backlight for the display screen 0040. The backlight 0010 may also be installed on a side surface of the display screen 0040, that is, a side-in backlight, as shown in fig. 22, where the backlight 0010 is installed in a region on the back edge of the display screen 0040, an optical film 0020 is disposed in a region opposite to the display region on the back surface of the display screen 0040, the light emitting surface of the backlight 0010 is opposite to the side surface of the optical film 0020, and the light beam emitted by the backlight 0010 irradiates the side surface of the optical film 0020, is transmitted through the optical film 0020, and then is emitted from the light emitting surface of the optical film 0020, so that the opposite region of the display region can be lightened, and backlight is provided for the display screen 0040.

The display device provided by the embodiment of the application can be a mobile phone, a tablet computer, a notebook computer, a television, a display area, a digital photo frame, a navigator, an intelligent wearable display device and any other product or component with a display function when being implemented, and the embodiment of the application is not limited in particular.

The backlight 0010 in the embodiment of the present application is a direct type backlight, and may include a lamp panel 11, as shown in fig. 23a, an array of light emitting units 12 arranged in an mxn array is disposed on the lamp panel 11, where M and N are both positive integers. The backlight 0010 may further include a plurality of light panels 11, where adjacent light panels 11 are spliced, and each light panel 11 may be provided with a plurality of light emitting units 12. Wherein, the plurality of light emitting units 12 disposed on each lamp panel 11 may be arranged in a1×n array, as shown in fig. 23 b; or may be arranged in an mx 1 array as shown in fig. 23 c; or may be arranged in an mxn array as shown in fig. 23 d. The light emitting unit 12 may be a light emitting Diode (LIGHT EMITTING Diode, LED) bead, or may be a submillimeter light emitting Diode (Mini LED) bead, or may also be a Micro light emitting Diode (Micro LED) bead.

All the light emitting units on all the lamp panels in the embodiment of the application can be divided into a plurality of light emitting areas, and each light emitting area comprises one light emitting unit or a plurality of light emitting units. When the light-emitting area is small, one LED is enough to illuminate the whole light-emitting area, one light-emitting unit is included in the light-emitting area, and when the light-emitting area is large, one LED, mini LED or Micro LED is insufficient to illuminate the whole light-emitting area, and a plurality of light-emitting units are included in the light-emitting area so as to ensure that the whole light-emitting area is illuminated. The light emitting areas can be used as the minimum control unit to control the brightness of the light emitting units in different light emitting areas, the brightness of all the light emitting units in the same light emitting area is the same, and the brightness of the light emitting units in different light emitting areas can be the same or different, so that the area control of the backlight source can be realized based on the light emitting areas, and the picture display quality of the display device can be improved.

In the embodiment of the application, the first end of the driving unit can be electrically connected with part of the light-emitting units in the same light-emitting area, and can also be electrically connected with all the light-emitting units in the same light-emitting area. For example, if the number of light emitting units in the light emitting area is large, a single driving unit may not be sufficient to drive all the light emitting units in the light emitting area, and all the light emitting units in the light emitting area may be electrically connected to the first ends of the plurality of driving units, so that a portion of the light emitting units in the same light emitting area are electrically connected to the first ends of the single driving unit. If the number of light emitting units in the light emitting area is small, a single driving unit is sufficient to drive all the light emitting units in the light emitting area, all the light emitting units in the light emitting area may be arranged to be electrically connected to the first end of one driving unit, so that all the light emitting units in the same light emitting area are electrically connected to the first end of one driving unit.

In summary, the same driving unit can only drive the light emitting units in the same light emitting area, and all the driving units in the same light emitting area receive the same area control signal, so that the driving units in the same light emitting area can generate the same driving signal, and all the light emitting units in the same light emitting area emit light beams with the same brightness under the action of the same driving signal. For the light emitting areas Z1 and Z2 with different brightness, the driving units in the Z1 and the driving units in the Z2 receive different area control signals, different driving signals D1 and D2 are respectively generated, the driving signals D1 and D2 are different, the brightness of the light beam emitted by the light emitting units in the Z1 under the action of the driving signals D1 is different from the brightness of the light beam emitted by the light emitting units in the Z2 under the action of the driving signals D2, and therefore the partition control of the backlight source is achieved.

The adapter plate in the embodiments of the present application is used for transmitting control signals to the driving unit, and in some embodiments may also electrically connect the driving unit and the light emitting unit. The adapter plate is provided with a plurality of metal wires, wherein part of the metal wires can be used for transmitting control signals, and part of the metal wires can be used for transmitting power signals, so that the metal wires used for transmitting the control signals can be recorded as control signal wires, and the metal wires used for transmitting the power signals can be recorded as power signal wires. The control signal line can be electrically connected with the second ends of the driving units, and the second ends of all the driving units electrically connected with the light emitting units in the same light emitting area are electrically connected with the same control signal line, so that the number of metal wires can be saved.

Fig. 24 is a schematic structural view of a backlight according to an embodiment of the present application, and, on the basis of the above example, as shown in fig. 24, the backlight 0010 further includes: a drive plate 13 and a connecting plate 14.

Wherein, be provided with a plurality of drive units 15 on the drive plate 13, be provided with the connecting wire between drive plate 13 and the keysets 14, drive unit 15 on the drive plate 13 passes through the connecting wire and is connected with keysets 14 electricity, keysets 14 still are connected with the luminescence unit 12 on the lamp plate 11 electricity. In this way, the driving signals output by the driving unit 12 are sequentially sent to the light emitting units 12 through the driving board 13, the connecting wire, the adapter board 14 and the lamp panel 11, and the light emitting units 12 in each light emitting area receive the same driving signals, so that the brightness of the light emitting units 12 in each light emitting area is the same, and the partition control of the large-size backlight source is realized.

In the embodiment of the application, the driving unit can be arranged on the lamp panel or the adapter plate, and a driving plate and a connecting wire of the driving plate are not required to be additionally arranged, so that the circuit of the backlight source can be simplified, the complexity of the hardware structure of the display device can be reduced, and the cost of the display device is reduced; in addition, the space occupied by the backlight source can be reduced, so that enough space is available for setting other functional modules, and the multifunctional development of the display equipment is facilitated.

The following describes embodiments of the present application in detail with reference to a few specific examples.

Fig. 25 is a schematic structural view of a backlight according to an embodiment of the present application, fig. 26 is a schematic structural view of a backlight according to an embodiment of the present application, and as shown in fig. 25 and 26, a backlight 0010 includes: a lamp panel 11, a plurality of driving units 15 and an adapter plate 14.

The backlight 0010 may include one light panel 11 or a plurality of light panels 11, as shown in fig. 3a to 3d, each light panel 11 is provided with a plurality of light emitting units 12, all the light emitting units 12 on all the light panels 11 in the backlight 0010 may be divided into a plurality of light emitting areas Z, each light emitting area Z includes one light emitting unit 12 or a plurality of light emitting units 12, the brightness of all the light emitting units 12 in the same light emitting area Z is the same, and the brightness of the light emitting units 12 in different light emitting areas Z may be the same or different.

All driving units 15 may be disposed on the lamp panel 11 as shown in fig. 5, and may also be disposed on the adapter plate 14 as shown in fig. 26. The first end of each driving unit 15 is electrically connected to a part of the light emitting units 12 or all the light emitting units 12 in the same light emitting area Z, and accordingly, each driving unit 15 may control a part of the light emitting units 12 or all the light emitting units 12 in the same light emitting area Z to display the same brightness, and all the driving units 15 in the same light emitting area may control all the light emitting units 12 in the area to display the same brightness.

The interposer 14 is provided with a plurality of control signal lines 141, and the control signal lines 141 are electrically connected to the second ends of the driving units 15.

As shown in fig. 25 and 26, the backlight 0010 includes two light panels 11, a first light panel 11a and a second light panel 11b, and a first light emitting unit 121, a second light emitting unit 122, a third light emitting unit 123, and a fourth light emitting unit 124 are disposed on the first light panel 11a and the second light panel 11 b. The first light emitting unit 121 and the second light emitting unit 122 on the first lamp panel 11a are divided into a first light emitting region Z1, the third light emitting unit 123 and the fourth light emitting unit 124 on the first lamp panel 11a are divided into a second light emitting region Z2, the first light emitting unit 121, the second light emitting unit 122 and the third light emitting unit 123 on the second lamp panel 11b are divided into a third light emitting region Z3, and the fourth light emitting unit 124 on the second lamp panel 11b is divided into a fourth light emitting region Z4.

With continued reference to fig. 25 and 26, a first driving unit 151 is provided for the first and second light emitting units 121 and 122 within the first light emitting region Z1, a first end of the first driving unit 151 is electrically connected with the first and second light emitting units 121 and 122, respectively, a second driving unit 152 is provided for the third and fourth light emitting units 123 and 124 within the second light emitting region Z2, and a first end of the second driving unit 152 is electrically connected with the third and fourth light emitting units 123 and 124, respectively. The third driving unit 153 is provided for the first and second light emitting units 121 and 122 in the third light emitting region Z3, the first end of the third driving unit 153 is electrically connected to the first and second light emitting units 121 and 122, respectively, the fourth driving unit 154 is provided for the third light emitting unit 123 in the third light emitting region Z3, the first end of the fourth driving unit 154 is electrically connected to the third light emitting unit 123, the fifth driving unit 155 is provided for the fourth light emitting unit 124 in the fourth light emitting region Z4, and the first end of the fifth driving unit 155 is electrically connected to the fourth light emitting unit 124.

With continued reference to fig. 25 and 26, five control signal lines 141 are disposed on the interposer 14, wherein a first control signal line 141a is electrically connected to the second end of the first driving unit 151, a second control signal line 141b is electrically connected to the second end of the second driving unit 152, a third control signal line 141c is electrically connected to the second end of the third driving unit 153, a fourth control signal line 141d is electrically connected to the second end of the fourth driving unit 154, and a fifth control signal line 141e is electrically connected to the second end of the fifth driving unit 155.

The driving unit 15 may be disposed on the lamp panel 11 as shown in fig. 5, and the driving unit 15 may also be disposed on the adapter plate 14 as shown in fig. 26. No matter the driving unit 15 is arranged on the lamp panel 11 or the adapter plate 14, no driving plate or connecting wires connected with the driving plate are needed to be additionally arranged, and the circuit of the backlight source can be simplified, so that the complexity of the hardware structure of the display device can be reduced, and the cost of the display device is reduced. In addition, the space occupied by the backlight source can be reduced, so that enough space is provided for setting other functional modules, and the multifunctional development of the display equipment is facilitated.

It should be noted that, in this embodiment, only the number of light panels in the backlight, the number of light emitting units in each light panel, the number of light emitting units in each light emitting area, and the number of driving units electrically connected to all light emitting units in each light emitting area are described as examples, and in practical applications, the number of light panels in the backlight, the number of light emitting units in each light panel, the number of light emitting units in each light emitting area, and the number of driving units electrically connected to all light emitting units in each light emitting area may be flexibly set based on practical requirements, which is not particularly limited in the embodiments of the present application.

In the embodiment of the present application, as shown in fig. 25, the driving unit 15 is disposed on the lamp panel 11, one or more first connection terminals 142 are disposed on the adapter plate 14, one or more second connection terminals 111 are disposed on the lamp panel 11, one first connection terminal 142 is electrically connected to one second connection terminal 111, and the second end of the driving unit 15 is electrically connected to the control signal line 141 through the second connection terminal 111 and the first connection terminal 142.

As shown in fig. 25, two first connection terminals 142 are disposed on the adapter board 14, and one second connection terminal 111 is disposed on each of the first lamp panel 11a and the second lamp panel 11b, where the first connection terminals 142 and the second connection terminals 111 can be electrically connected in a one-to-one correspondence manner. The second end of the driving unit 15 is electrically connected to the second connection terminal 111, and the control signal line 141 is electrically connected to the first connection terminal 142, so that the second end of the driving unit 15 may be electrically connected to the control signal line 141 through the second connection terminal 111 and the first connection terminal 142 in this order. In this way, the first connection terminal 142 and the second connection terminal 111 are adaptively connected together, so that the lamp panel 11 and the adapter plate 14 can be electrically connected without a lamp panel connection wire, a circuit of the backlight source can be simplified, and therefore the complexity of a hardware structure of the display device can be reduced, and the cost of the display device is reduced.

With continued reference to fig. 25, the first lamp panel 11a is provided with two connection wires, wherein the first connection wire electrically connects the second end of the first driving unit 151 and the second connection terminal 111, and the second connection wire electrically connects the second end of the second driving unit 152 and the second connection terminal 111. Three connection lines are led out from the second lamp panel 11b, wherein the first connection line electrically connects the second end of the third driving unit 153 with the second connection terminal 111, the second connection line electrically connects the second end of the fourth driving unit 154 with the second connection terminal 111, and the third connection line electrically connects the second end of the fifth driving unit 155 with the second connection terminal 111. The lamp panel 11 does not need to be provided with a connecting wire for each light-emitting unit 12, but is provided with a connecting wire for each driving unit 15, so that the number of the connecting wires in the lamp panel 11 can be reduced, the circuit of the backlight source is simplified, and the complexity of the hardware structure of the display device can be reduced. In addition, since the number of connecting wires in the lamp panel 11 is reduced, a larger number of light emitting units 12 can be provided on the lamp panel 11, which is advantageous for large-sized development of the display device.

The number of connecting wires in the lamp panel 11 is the same as the number of leads in the second connecting terminals 111, and since the number of connecting wires in the lamp panel 11 is reduced, the number of leads in the second connecting terminals 111 is reduced, that is, the space occupied by the second connecting terminals 111 is smaller, and the space occupied by the corresponding first connecting terminals 142 is smaller, so that a larger number of first connecting terminals 142 can be arranged on a single adapter plate 14, thereby reducing the number of adapter plates 14 and reducing the cost of the display device.

In this embodiment, the drive unit sets up on the lamp plate, is provided with first connecting terminal on the keysets, is provided with second connecting terminal on the lamp plate, and the second end of drive unit passes through second connecting terminal and first connecting terminal and is connected with the control signal line electricity, need not to set up the lamp plate connecting wire and can set up less quantity connecting wire in the lamp plate, can simplify the circuit of backlight to can reduce display device's hardware structure complexity, reduce display device's cost. In addition, a plurality of light emitting units can be arranged on the lamp panel, so that the large-size development of the display device is facilitated. In addition, the space occupied by the first connection terminals can be reduced, and a plurality of first connection terminals can be arranged on a single adapter plate, so that the number of the adapter plates can be reduced, and the cost of the display device can be reduced.

In the embodiment of the application, the driving unit 15 is disposed on a surface of the lamp panel 11, which is opposite to the light emitting unit 12.

For example, the light emitting unit 12 is disposed on the first surface of the lamp panel 11, and the second surface of the lamp panel 11 is opposite to the first surface, and the driving unit 15 is disposed on the second surface, so that the driving unit 15 may be disposed on a side where the light emitting unit 12 is not disposed. In this way, when the light emitting unit 12 emits the light beam, the driving unit 15 does not block the light beam, and uniformity of the light beam emitted by the backlight 0010 can be improved, so that image display quality of the display apparatus can be ensured.

In this embodiment, the driving unit is disposed on a side surface of the lamp panel opposite to the light emitting unit, so that when the light emitting unit emits a light beam, the driving unit does not shade the light beam, and uniformity of the light beam emitted by the backlight source can be improved, so that image display quality of the display device can be ensured.

In the embodiment of the present application, as shown in fig. 26, the driving unit 15 is disposed on the adapter plate 14, the adapter plate 14 is provided with a first connection terminal 142, the lamp panel 111 is provided with a second connection terminal 111, and the first end of the driving unit 15 is electrically connected to the light emitting unit 12 through the first connection terminal 142 and the second connection terminal 111.

As shown in fig. 26, two first connection terminals 142 are disposed on the interposer 14, and one second connection terminal 111 is disposed on each of the first lamp panel 11a and the second lamp panel 11b, where the first connection terminals 142 and the second connection terminals 111 may be electrically connected in a one-to-one correspondence manner. The first end of the driving unit 15 is electrically connected to the first connection terminal 142, and the light emitting unit 12 is electrically connected to the second connection terminal 111, so that the first end of the driving unit 15 may be electrically connected to the light emitting unit 12 through the first connection terminal 142 and the second connection terminal 111 in sequence. In this way, the first connection terminal 142 and the second connection terminal 111 are adaptively connected together, so that the lamp panel 11 and the adapter plate 14 can be electrically connected without a lamp panel connection wire, a circuit of the backlight source can be simplified, and therefore the complexity of a hardware structure of the display device can be reduced, and the cost of the display device is reduced.

In this embodiment, the driving unit is disposed on the adapter plate, the adapter plate is provided with a first connection terminal, the lamp panel is provided with a second connection terminal, the first end of the driving unit is electrically connected with the light-emitting unit through the first connection terminal and the second connection terminal, no lamp panel connection line is required, and a circuit of the backlight source can be simplified, so that the hardware structure complexity of the display device can be reduced, and the cost of the display device is reduced.

Fig. 27 is a schematic structural diagram of a backlight according to an embodiment of the present application, in an embodiment of the present application, as shown in fig. 27, a backlight 0010 may include a plurality of adapter plates 14, and short sides of adjacent adapter plates 14 are disposed opposite to each other.

As shown in fig. 27, the X direction is the short side direction of the interposer 14, and the Y direction is the long side direction of the interposer 14. The backlight 0010 may include a first adapter plate 14a, a second adapter plate 14b, and a third adapter plate 14c, and the first adapter plate 14a may be disposed such that a long side direction of the first adapter plate 14a is parallel to the first direction. In some embodiments, after the first interposer 14a is disposed, one short side of the second interposer 14b may be spliced to the short side of the first interposer 14a, and the short side of the third interposer 14c may be spliced to the other short side of the second interposer 14 b. In some embodiments, after the first adapting plate 14a is disposed, one short side of the second adapting plate 14b may be disposed opposite to the short side of the first adapting plate 14a, and a gap exists between one short side of the second adapting plate 14b and the short side of the first adapting plate 14a, and the short side of the third adapting plate 14c is disposed opposite to the other short side of the second adapting plate 14b, and a gap exists between the short side of the third adapting plate 14c and the other short side of the second adapting plate 14 b. In this way, the length of a single interposer 14 may be reduced, making the process implementation of the interposer 14 simpler.

The short sides between the adjacent adapter plates 14 are spliced or spaced, so that the long sides of each adapter plate 14 can be exposed, and the first connection terminals 142 can only be arranged on the long sides of the adapter plates 14, so that a plurality of first connection terminals 142 can be arranged on a single adapter plate 14, the number of the adapter plates can be reduced, and the cost of the display device can be reduced.

It should be noted that, in the embodiment shown in fig. 27, only three adapter plates are taken as an example to exemplarily illustrate the number of the adapter plates in the backlight, and in practical application, the number of the adapter plates may be flexibly set based on the actual requirement, which is not particularly limited in the embodiment of the present application. In the embodiment shown in fig. 27, the long side direction of the adapter plate is taken as the X direction, the short side direction of the adapter plate is taken as the Y direction, and in other embodiments, the long side direction of the adapter plate may be taken as the Y direction, and the short side direction of the adapter plate may be taken as the X direction.

In this embodiment, the backlight source includes a plurality of adapter plates, and the short sides of adjacent adapter plates are arranged oppositely, so that the length of a single adapter plate can be reduced, and the implementation of the technology of the adapter plates is relatively simple; in addition, through the relative setting of the minor face of adjacent keysets for first connecting terminal sets up in the long limit of keysets, so can set up the first connecting terminal of a large number on the single keysets, can reduce the quantity of keysets, reduce display device's cost.

In the embodiment of the present application, with continued reference to fig. 27, the backlight 0010 includes a plurality of light panels 11 arranged along a long side direction of the interposer 14, all the light emitting units 12 on each light panel 11 are arranged along a short side direction of the interposer, the light panels 11 are located in a region opposite to the long side of the interposer 14, and the second connection terminals 111 are located on one side of the light panels 11 close to the interposer 14.

As shown in fig. 27, the backlight 0010 includes a plurality of light panels 11 arranged along a Y direction, wherein the light emitting units 12 on each light panel 11 are arranged along an X direction, and the light panel 11 is a light bar. The lamp panels 11 are arranged in the opposite areas of the long sides of the adapter plate 14, and the second connecting terminals 111 are arranged on one side, close to the adapter plate 14, of the lamp panels 11, so that one second connecting terminal 111 is arranged on each lamp panel 11, the second connecting terminal 111 is arranged on one side, closest to the adapter plate 14, of each lamp panel, and the second connecting terminal 111 and the first connecting terminal 142 are conveniently connected, namely, the lamp panels 11 and the adapter plate 14 are conveniently connected.

In this embodiment, the backlight source includes a plurality of lamp panels arranged along the long side direction of the adapter plate, all the light emitting units on each lamp panel are arranged along the short side direction of the adapter plate, the lamp panel is located in the area where the long side of the adapter plate is opposite, and the second connection terminal is located at one side of the lamp panel close to the adapter plate, so that the second connection terminal and the first connection terminal are conveniently connected, namely, the lamp panel and the adapter plate are conveniently connected.

Fig. 28 is a schematic structural diagram of a backlight according to an embodiment of the present application, as shown in fig. 28, and in the embodiment of the present application, on the basis of the embodiment shown in fig. 27, a plurality of first connection terminals 142 are disposed on both long sides of the interposer 14, and the lamp panel 11 is located in a region opposite to both long sides of the interposer 14. The pitches between the adjacent first connection terminals 111 are equal along the long side direction of the interposer 14, and the pitches of the adjacent first connection terminals 111 are not smaller than the width of the lamp panel 11.

As shown in fig. 28, three first connection terminals 142 are disposed on the first long side 143a of the interposer 14, and three first connection terminals 142 are also disposed on the second long side 143b of the interposer 14. The light panel 11 of the backlight 0010 is located in a region opposite to the first side long side 143a, the light panel 11 of the backlight 0010 is located in a region opposite to the second side long side 143b, the light panel 11 opposite to the first side long side 143a is electrically connected to the first connection terminal 142 provided on the first side long side 143a, and the light panel 11 opposite to the second side long side 143b is electrically connected to the first connection terminal 142 provided on the second side long side 143 b. In this way, two rows of first connection terminals 142 can be arranged on the long sides of the adapter plate 14, so that more first connection terminals 142 can be arranged on a single adapter plate 14, thereby reducing the number of adapter plates 14 and reducing the cost of the display device.

Along the Y direction, the spacing between any adjacent first connection terminals 142 on the first side long side 143a is a, and the spacing between any adjacent first connection terminals 142 on the second side long side 143B is B, so that the lamp panels 11 opposite to the first side long side 143a are arranged at equal spacing along the Y direction, and the lamp panels 11 opposite to the second side long side 143B are arranged at equal spacing along the Y direction, so that the light beams emitted by the backlight 0010 are relatively uniform, and the picture display quality of the display device can be improved. For example, the width of the light board 11 is a ', and the pitches a and B are both greater than the width a', so that enough space can be reserved between the adjacent first connection terminals 142 to place the light board 111, and the utilization rate of the first connection terminals can be improved.

In the embodiment of the present application, a=b may be set, so that uniformity of a light beam emitted by the backlight 0010 can be further improved, thereby improving display quality of a display device.

It should be noted that, in the embodiment shown in fig. 28, only the number of the first terminals disposed on the long sides of the interposer is illustrated, and in practical application, the number of the first terminals disposed on the long sides of the interposer may be flexibly set, which is not particularly limited in the embodiment of the present application. It should be further noted that, in the embodiment shown in fig. 28, only the case where the number of the first terminals disposed on the long sides of the interposer is the same is taken as an example for illustration, in practical application, the number of the first terminals on the long sides may be the same or different, and the embodiment of the present application is not limited in this way.

In this embodiment, on the one hand, a plurality of first connection terminals may be disposed on the long sides of the two sides of the adapter plate, and the lamp panel is located in an area opposite to the long sides of the two sides of the adapter plate, so that a plurality of first connection terminals may be disposed on a single adapter plate, thereby reducing the number of adapter plates and reducing the cost of the display device. On the other hand, the distance between the adjacent first connection terminals is equal along the long side direction of the adapter plate, so that the light beams emitted by the backlight source are uniform, and the display quality of the display device can be improved. In still another aspect, the space between the adjacent first connection terminals is not smaller than the width of the lamp panel, so that enough space can be reserved between the adjacent first connection terminals to place the lamp panel, and the utilization rate of the first connection terminals is improved.

Fig. 29 is a schematic structural view of a backlight according to an embodiment of the present application, as shown in fig. 29, and in the embodiment of the present application, the backlight 0010 further includes: the first circuit board 16 is located at a side of the lamp panel 11 facing away from the light emitting unit 12.

The first circuit board 16 includes a third connection terminal 161, a power supply module 162 and a controller 163 are disposed on the first circuit board 16, the controller 163 is electrically connected to the control signal line 141 through the third connection terminal 161, and the controller 163 is also electrically connected to the motherboard or the timing controller.

The first circuit board 16 may be a control board, on which the controller 163 and the power supply module 162 are disposed, as shown in fig. 29, there is no need to provide an additional power board for the power supply module 162, so that the control board and the power board can be combined into one, and the number of circuit boards is reduced, thereby reducing the complexity of the hardware structure of the display device and reducing the cost of the display device; in addition, the space occupied by the backlight source can be reduced, so that enough space is available for setting other functional modules, and the multifunctional development of the display equipment is facilitated.

In other embodiments, the first circuit board 16 may be a power board, on which the power module 162 and the controller 163 are disposed, as shown in fig. 29, there is no need to provide an additional control board for the controller 163, so that the control board and the power board can be integrated into one, and the number of circuit boards is reduced, thereby reducing the complexity of the hardware structure of the display device and reducing the cost of the display device; in addition, the space occupied by the backlight source can be reduced, so that enough space is available for setting other functional modules, and the multifunctional development of the display equipment is facilitated.

The power supply module 162 on the first circuit board 16 is electrically connected to the controller 163, and the power supply module 162 may provide power to the controller 163. The controller 163 and the main board or the timing controller may be electrically connected through the area control data line, and thus, the controller 163 may receive the area control data transmitted from the main board or the timing controller. The first circuit board 16 includes a third connection terminal, and a connection terminal adapted to the third connection terminal 161 may be provided on the interposer 14, and the adapted connection terminal is electrically connected to the control signal line 141, so that the controller 163 may implement electrical connection to the control signal line 141 through the third connection terminal 161 and the connection terminal adapted to the third connection terminal 161.

The light emitting unit 12 is disposed on the first surface of the light board 11, and the second surface of the light board 11 is opposite to the first surface, so that the first circuit board 16 is disposed in a side area opposite to the second surface, and the first circuit board 16 can be disposed on a side of the light board 11 facing away from the light emitting unit 12. Therefore, when the light emitting unit 12 emits the light beam, the first circuit board 16 does not shade the light beam, so that uniformity of the light beam emitted by the backlight 0010 can be improved, and image display quality of the display device can be ensured.

In this embodiment, on the one hand, the first circuit board is located the lamp plate back of the body and leaves the one side of lighting unit for first circuit board can not cause the shielding to the light beam that the backlight launched, can promote the homogeneity of the light beam that the backlight launched, thereby can ensure display device's image display quality. On the other hand, the first circuit board comprises a third connecting terminal, the first circuit board is provided with a power supply module and a controller, the controller is electrically connected with a control signal line through the third connecting terminal, the controller is also electrically connected with a main board or a time sequence controller, the control board and the power supply board can be combined into a whole, the circuit boards are not required to be arranged for the power supply module and the controller respectively, the number of the circuit boards can be reduced, the circuit of the backlight source is simplified, the hardware structural complexity of the display device can be reduced, and the cost of the display device is reduced; in addition, the space occupied by the backlight source can be reduced, so that enough space is available for setting other functional modules, and the multifunctional development of the display equipment is facilitated.

Fig. 30 is a schematic structural view of a backlight according to an embodiment of the present application, as shown in fig. 0010, and in the embodiment of the present application, the backlight assembly 0010 further includes: and a second control board 17 positioned on a side of the lamp panel 11 facing away from the light emitting unit 12.

The second circuit board 17 includes a fourth connection terminal 171, the second circuit board 17 is provided with a controller 163 and a timing controller 172, the timing controller 172 is electrically connected to the control signal line 141 through the fourth connection terminal 171, and the timing controller 172 is also electrically connected to the motherboard.

The second circuit board 17 may be a timing control board, and the timing control board is provided with a controller 163 and a timing controller 172, as shown in fig. 30, there is no need to provide an additional control board for the controller 163, so that the control board and the timing control board can be combined into one, and the number of circuit boards is reduced, thereby reducing the complexity of the hardware structure of the display device and reducing the cost of the display device; in addition, the space occupied by the backlight source can be reduced, so that enough space is available for setting other functional modules, and the multifunctional development of the display equipment is facilitated.

In other embodiments, the second circuit board 17 may be a control board, and the control board is provided with a controller 163 and a timing controller 172, as shown in fig. 30, there is no need to provide an additional timing control board for the timing controller 172, so that the control board and the timing control board can be integrated into one, and the number of circuit boards is reduced, thereby reducing the complexity of the hardware structure of the display device and reducing the cost of the display device; in addition, the space occupied by the backlight source can be reduced, so that enough space is available for setting other functional modules, and the multifunctional development of the display equipment is facilitated.

The timing controller 172 on the second circuit board 17 is electrically connected to the controller 163, and the timing controller 172 transmits a timing control signal to the controller 163. The timing controller 172 is electrically connected to the motherboard, and can receive the area control data and the power signal sent by the motherboard. The second circuit board 17 includes a fourth connection terminal 171, and a connection terminal adapted to the fourth connection terminal 171 may be provided on the interposer 14, and the adapted connection terminal is electrically connected to the control signal line 141, so that the timing controller 172 may implement an electrical connection with the control signal line 141 through the fourth connection terminal 171 and the connection terminal adapted to the fourth connection terminal 171.

The light emitting unit 12 is disposed on the first surface of the light board 11, and the second surface of the light board 11 is opposite to the first surface, so that the second circuit board 17 is disposed in a side area opposite to the second surface, and the second circuit board 17 can be disposed on a side of the light board 11 facing away from the light emitting unit 12. Therefore, when the light emitting unit 12 emits the light beam, the second circuit board 17 does not shade the light beam, so that the uniformity of the light beam emitted by the backlight 0010 can be improved, and the image display quality of the display device can be ensured.

In this embodiment, on the one hand, the second circuit board is located the lamp plate back of the body and leaves the one side of lighting unit for the second circuit board can not cause the shielding to the light beam that the backlight launched, can promote the homogeneity of the light beam that the backlight launched, thereby can ensure display device's image display quality. On the other hand, the second circuit board comprises a fourth connecting terminal, the second circuit board is provided with a controller and a time sequence controller, the time sequence controller is electrically connected with a control signal line through the fourth connecting terminal, the time sequence controller is also electrically connected with the main board, the control board and the time sequence control board can be combined into a whole, the circuit boards are not required to be arranged for the controller and the time sequence controller respectively, the number of the circuit boards can be reduced, the circuit of the backlight source is simplified, the hardware structural complexity of the display device can be reduced, and the cost of the display device is reduced; in addition, the space occupied by the backlight source can be reduced, so that enough space is available for setting other functional modules, and the multifunctional development of the display equipment is facilitated.

The application also provides a backlight module, which comprises the backlight 0010 provided by any embodiment.

Fig. 31 is a schematic structural diagram of a backlight module according to an embodiment of the application, as shown in fig. 31, the backlight module includes: backlight 0010, optical film 0020 and back plate 0030. Optical film 0020 is located on one side of back plate 0030. Backlight 0010 is located on the side of optical film 0020 remote from back plate 0030.

The backlight 0010 in this embodiment may be the backlight 0010 provided in any of the foregoing embodiments of the present application. As illustrated in fig. 25 and 26, the backlight 0010 includes: the lamp panel 11, a plurality of driving units 15 and the adapter plate 14, a plurality of light emitting units 12 are arranged on the lamp panel 11, and all the light emitting units 12 on the lamp panel 11 are divided into a plurality of light emitting areas. The first end of the driving unit 15 is electrically connected to at least part of the light emitting units 12 in the same light emitting area, and the interposer 14 is provided with a control signal line 141, the control signal line 141 being electrically connected to the second end of the driving unit 15. The driving unit 15 may be disposed on the lamp panel 11 as shown in fig. 25, or may be disposed on the adapter plate 14 as shown in fig. 26.

In the embodiment of the application, as shown in fig. 31, the backlight module further includes a side plate 0050, edges of the side plate 0050 and the back plate 0030 are connected to form a chamber, the backlight 0010 is placed in the chamber, and the side plate 0050 plays a role in supporting and protecting.

It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

A backlight module, comprising:

the LED display device comprises a circuit board, a driving chip arranged on the circuit board and a plurality of light-emitting areas corresponding to the driving chip;

The driving chip is provided with a first pin and a third pin which are positioned on the first side of the driving chip, and a second pin and a fourth pin which are positioned on the second side of the driving chip; wherein the first pin is electrically communicated with the second pin in the driving chip, and the third pin is electrically communicated with the fourth pin in the driving chip; the first side is arranged opposite to the second side;

The driving chip is further provided with a plurality of control ends positioned on the third side of the driving chip; the control ends are correspondingly connected with the light-emitting areas.
The backlight module according to claim 1,

A plurality of driving chips arranged in an array are arranged on the circuit board;

The first pins and the second pins among the plurality of driving chips positioned in the same row are sequentially connected, and the third pins and the fourth pins are sequentially connected;

When the driving chips positioned at the tail of different rows are connected, the second pins among the driving chips are connected with the second pins, and the fourth pins among the driving chips are connected with the fourth pins; the second pins among the driving chips are connected with the second pins by using cross wires, or the fourth pins among the driving chips are connected with the fourth pins by using cross wires;

When the first driving chips positioned in different rows are connected, a first pin among the driving chips is connected with the first pin, and a third pin among the driving chips is connected with the third pin; and the first pins among the driving chips are connected by using cross wires, or the third pins among the driving chips are connected by using cross wires.
The backlight module according to claim 1,

The driving chip is also provided with a fifth pin and a sixth pin; the first pin, the third pin and the fifth pin are sequentially arranged on the first side of the driving chip, and the second pin, the fourth pin and the sixth pin are sequentially arranged on the second side of the driving chip; the first pin, the second pin, the fifth pin and the sixth pin are electrically communicated inside the driving chip.
A backlight module according to claim 3,

A plurality of driving chips arranged in an array are arranged on the circuit board;

When the driving chips positioned in the same row are connected, a third pin and a fourth pin among the driving chips are sequentially connected; the first pin and the second pin between the driving chips are sequentially connected, or the fifth pin and the sixth pin are sequentially connected;

When the driving chips positioned at the tail of different rows are connected, a fourth pin among the driving chips is connected with the fourth pin, and a second pin among the driving chips is connected with the sixth pin;

when the first driving chips in different rows are connected, the third pins among the driving chips are connected with the third pins, and the first pins among the driving chips are connected with the fifth pins.
The backlight module according to claim 4, wherein the first pin, the second pin, the fifth pin and the sixth pin are used for transmitting control signals of a light emitting area in the backlight module; the third pin and the fourth pin are used for transmitting clock signals of the light-emitting area in the backlight module;

Or the first pin, the second pin, the fifth pin and the sixth pin are used for transmitting clock signals of the light-emitting area in the backlight module, and the third pin and the fourth pin are used for transmitting control signals of the light-emitting area in the backlight module.
The backlight module according to any one of claims 1-5,

The plurality of control terminals comprise a common terminal and a plurality of output terminals;

One end of the plurality of light-emitting areas corresponding to the driving chip is connected to the common end of the driving chip, and the other end of the plurality of light-emitting areas corresponding to the driving chip is respectively connected to the plurality of output ends of the driving chip.
The backlight module according to claim 6, wherein the driving chip is further provided with a plurality of control ends located at a fourth side of the driving chip; the control ends are correspondingly connected with the light-emitting areas.
The backlight module according to claim 7, wherein the plurality of control terminals of the driving chip on the third side of the driving chip include a first common terminal, a first output terminal and a second output terminal; the driving chip is positioned at a plurality of control ends of the fourth side of the driving chip and comprises a second common end, a third output end and a fourth output end;

The driving chip is correspondingly provided with a first light-emitting area, a second light-emitting area, a third light-emitting area and a fourth light-emitting area; one end of the first light-emitting area and one end of the second light-emitting area are respectively connected to the first common end; the other end of the first light-emitting area is connected to the first output end; the other end of the second light-emitting area is connected to the second output end; one end of the third light-emitting area and one end of the fourth light-emitting area are respectively connected to a second common end; the other end of the third light-emitting area is connected to the third output end; the other end of the second light emitting region is connected to the fourth output terminal.
The backlight module of claim 8, the first common terminal being located between the first output terminal and the second output terminal; the second common terminal is located between the third output terminal and the fourth output terminal.
The backlight module according to claim 9, wherein one end of the light emitting region is a positive common terminal of the light emitting region or one end of the light emitting region is a negative common terminal of the light emitting region.
The backlight module of claim 1, the backlight module comprising a backlight driving circuit comprising: the LED lamp comprises a substrate, a driving unit and a plurality of LED lamp groups; the substrate is a substrate of the circuit board, and the driving unit comprises the driving chip and a peripheral circuit;

the driving unit and the LED lamp groups are arranged on the substrate and positioned on the same layer of the substrate;

the driving unit comprises a driving controller and a second terminal, and the driving controller is connected with the LED lamp groups;

The control circuit is provided with control controller and first terminal, drive controller pass through the second terminal first terminal with control controller connects, in order with drive controller carries out signal interaction, the signal includes: power supply related signals and drive control related communication signals.
The backlight module according to claim 11, wherein the driving controller is connected to the second terminal through a plurality of signal lines provided on the substrate, and the second terminal is connected to the first terminal through a flat cable; the flat cable comprises the plurality of signal lines;

Each signal wire is used for transmitting a signal, and the arrangement sequence of the plurality of signal wires is consistent with the arrangement sequence of pins used for transmitting corresponding signals in the driving controller.
The backlight module of claim 12, the communication signal comprising: a clock signal, a data input signal, and a data output signal;

The signal lines for transmitting the clock signal, the signal lines for transmitting the data input signal and the signal lines for transmitting the data output signal are isolated by a grounding line;

the flat cable is positioned between the grounding wires at the side of the driving controller and is connected with the grounding end of the substrate through a jumper wire.
The backlight module according to any one of claims 11 to 13, wherein the second terminal is disposed on the substrate in a sinking manner.
The backlight module according to claim 14, wherein the direction of the second terminals for connecting the flat cable has an inclination angle with respect to the substrate.
The backlight module according to claim 11, comprising a plurality of the backlight driving circuits, the backlight module further comprising a control circuit;

The control circuit comprises a control chip and a plurality of first terminals, wherein one first terminal corresponds to one backlight driving circuit;

The control chip is connected with the corresponding backlight driving circuit through each first terminal so as to perform signal interaction with the backlight driving circuit, and the signals comprise: power supply related signals and drive control related communication signals.
The backlight module of claim 16, the communication signal comprising a data output signal, the control circuit comprising: a buffer unit; the buffer unit comprises a plurality of buffer subunits, and each buffer subunit is connected with a plurality of first terminals through signal lines for transmitting the data output signals so as to acquire and combine the data output signals of the plurality of first terminals and send the data output signals to the control chip.
The backlight module of claim 17, the buffer subunit comprising: a buffer and a diode;

The input end of the buffer is connected with a plurality of first terminals through signal lines for transmitting the data output signals, the output end of the buffer is connected with the cathode of the diode, and the anode of the diode is connected with the control chip.
A backlight module according to claim 17 or 18, the buffer unit further comprising: a pull-up resistor; the control circuit further includes: a power supply terminal;

One end of the pull-up resistor is connected with the power supply end, and the other end of the pull-up resistor is connected with the positive electrode of each diode.
A display device, comprising: the backlight module, the motherboard, the power supply of any one of claims 1-19; the power supply is connected with the backlight module and the main board and is used for providing power supply signals; the main board is connected with the backlight module and is used for sending control signals and clock signals to the backlight module so that the backlight module emits light based on the clock signals and the control signals.