CN114974061A

CN114974061A - Display module and display device

Info

Publication number: CN114974061A
Application number: CN202210345288.0A
Authority: CN
Inventors: 戴佳华; 杨毅志; 黄建才; 黄敏
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-08-30

Abstract

The embodiment of the application provides a display module and a display device, a display panel and a driving assembly; the display panel comprises a display area and a non-display area, wherein the non-display area comprises a binding end; the driving assembly comprises at least two driving chips, at least one soft board and a hard board; the driving chip is connected with the binding end of the display panel, one end of the soft board is connected with the driving chip, and the other end of the soft board is connected with the hard board; at least one flexible board is simultaneously connected with the two driving chips. In the display panel and the display device provided by the embodiment of the application, the number of the soft boards is reduced, so that the width of the hard board can be reduced, and the material consumption and wiring design difficulty of the hard board are reduced; meanwhile, the driving chips at the two ends do not need to move inwards, and the display split phenomenon of the display panel is avoided.

Description

Display module and display device

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of display, and in particular relates to a display module and a display device.

[ background of the invention ]

Fig. 1 is a schematic view of a display module in the prior art, and fig. 2 is a schematic cross-sectional view of fig. 1. In a middle-and large-sized display panel, as shown in fig. 1 and fig. 2, the ratio of the number of the flexible boards 22 to the number of the driving chips 21 is generally 1: 1, i.e., a soft board 22, electrically connects only one driving chip 21 with a hard board 23.

In the prior art, in order to fit the size limit of the soft board 22, in particular, the edge of the hard board 23 needs to be substantially aligned with the edge of the soft board 22 at both ends, which makes the size of the hard board 23 generally large.

In addition, the hard board 23 is further provided with a device forbidden region 230, which is a bonding region when the driving chip 21 and the soft board 22 are bonded, in order to avoid damage to the device caused by pressure during bonding, no device is arranged in the device forbidden region 230, but the region in the hard board 23, which is available for arranging the device, is reduced, so that the overall size of the hard board 23 is increased.

In addition, in the conventional large-sized display screen, the size of the hard board 23 has a certain limitation, the edges of the soft boards 22 at the two ends are substantially aligned with the edges of the hard board 23, and the driving chips 21 are electrically connected to the soft boards 22 in a one-to-one correspondence, and the driving chips 21 are arranged at equal intervals.

[ application contents ]

In view of this, the embodiment of the present application provides a display module and a display device.

In a first aspect, an embodiment of the present application provides a display module, including:

a display panel including a display area and a non-display area, the non-display area including a binding end;

the driving assembly comprises at least two driving chips, at least one soft board and a hard board;

the driving chip is connected with the binding end of the display panel, one end of the soft board is connected with the driving chip, and the other end of the soft board is connected with the hard board; at least one of the flexible boards is simultaneously connected with the two driving chips.

In an implementation manner of the first aspect, two adjacent driving chips are correspondingly connected to one flexible board.

In one implementation manner of the first aspect, the driving assembly includes at least four driving chips arranged along a first direction;

the at least four driving chips comprise edge driving chips and middle driving chips, and the middle driving chips are positioned between the edge driving chips;

the edge driving chips are correspondingly connected with the soft boards one by one, and two adjacent middle driving chips are correspondingly connected with one soft board.

In one implementation manner of the first aspect, the width of the flexible board connected to the edge driving chip is W1, and the width of the flexible board connected to the middle driving chip is W2, where W1 is W2.

In one implementation manner of the first aspect, the flexible board connected with the edge driving chip comprises a dummy area and a first area; the pins in the dummy area float, and the pins in the first area are connected with the edge driving chip.

In one implementation manner of the first aspect, the dummy region is located at a side of the first region close to the flexible board connected to the intermediate driver chip.

In one implementation manner of the first aspect, in a plane where the driving chips are located, a width of a gap between two driving chips connected with one flexible board is greater than or equal to 10 mm.

In one implementation manner of the first aspect, at least two sets of shift registers and a first signal line for transmitting a clock signal and/or a trigger signal to the shift registers are disposed in the non-display area; the at least two groups of shift registers are respectively positioned at two sides of the display area along a first direction;

at least part of the driving chip comprises a first pin, and the first pin is electrically connected with the binding end of the display panel and electrically connected with the first signal line; the clock signal and/or the trigger signal are transmitted to the first signal line via at least part of the driving chip.

In one implementation manner of the first aspect, the driving assembly includes at least four driving chips arranged along the first direction;

the clock signal and/or the trigger signal are transmitted to the first signal line by the driving chip located at the edge of at least four driving chips.

In an implementation manner of the first aspect, the driving chip includes at least two edge regions arranged along the first direction, and the first pin is located in an edge region of the driving chip close to the shift register.

In one implementation manner of the first aspect, the clock signal and/or the trigger signal are generated by the hard board and transmitted to the first signal line through the soft board and at least a part of the driving chip.

In an implementation manner of the first aspect, at least a portion of the driver chips further include a second pin, where the second pin receives a clock signal and/or a trigger signal transmitted by the flexible printed circuit board;

the first pin is electrically connected with the second pin through a first connecting wire, and the first connecting wire is arranged on the driving chip.

In an implementation manner of the first aspect, at least part of the driver chips further include a second pin, where the second pin receives a clock signal and/or a trigger signal transmitted by the flexible printed circuit board;

the first pin and the second pin are electrically connected through the second connecting line, and the second connecting line is arranged on the display panel.

In an implementation manner of the first aspect, the bonding end of the display panel includes a first bonding pad and a second bonding pad, the first bonding pad is electrically connected to the first signal line and is bonded to the first pin, and the second bonding pad is bonded to the second pin;

the second connecting line is connected with the first bonding pad and the second bonding pad.

In one implementation manner of the first aspect, the clock signal and/or the trigger signal is generated by the driving chip and transmitted to the first signal line.

among the soft boards electrically connected with the at least four driving chips, the soft board connected with the driving chip positioned at the edge comprises a third pin, and the third pin is electrically connected with the binding end of the display panel and electrically connected with the first signal line;

the clock signal and/or trigger signal is generated by the hard board and transmitted to the first signal line via the soft board including the third pin.

In a second aspect, an embodiment of the present application provides a display device, including the display module provided in the first aspect.

In the display panel and the display device provided by the embodiment of the application, the number of the soft boards can be reduced by electrically connecting the at least one soft board with the two driving chips. The device forbidden distribution area which needs to be reserved when the soft board is bound with the hard board is reduced due to the reduction of the number of the soft boards, so that the device setting space in the hard board is increased, and the whole size of the hard board can be reduced. In addition, the reduction of the number of the soft boards enables the driving chips at the two ends to move inwards without being limited by the size of the hard board, and therefore the display split phenomenon of the display panel and the display device can be improved. And when the quantity of soft board reduced, the width of hardboard just also can reduce, and this application has reduced the materials of hardboard and has walked the line design degree of difficulty through reducing the size of hardboard, has reduced display panel and display device's cost.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a display module in the prior art;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

fig. 3 is a schematic view of a display module according to an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

FIG. 5 is a schematic diagram of a flexible board connected to two driver chips;

fig. 6 is a schematic view of a display module according to an embodiment of the present disclosure;

fig. 7 is a schematic view of a display module according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of an electrical connection between the display panel and the driving device in the display module shown in FIG. 7;

FIG. 9 is a schematic diagram of an electrical connection between the display panel and the driving assembly in the display module shown in FIG. 7;

FIG. 10 is a schematic diagram of an electrical connection between the display panel and the driving assembly of the display module shown in FIG. 9;

FIG. 11 is a schematic diagram illustrating an electrical connection between the display panel and the driving assembly of the display module shown in FIG. 9;

fig. 12 is a schematic view of a display module according to an embodiment of the disclosure;

FIG. 13 is a schematic diagram illustrating an electrical connection between the display panel and the driving assembly of the display module shown in FIG. 12;

fig. 14 is a schematic view of a display device according to an embodiment of the present disclosure.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description herein, it is to be understood that the terms "substantially", "approximately", "about", "substantially", and the like, as used in the claims and the examples herein, are intended to be generally accepted as not being precise, within the scope of reasonable process operation or tolerance.

It should be understood that although the terms first, second, third, etc. may be used to describe the pins, etc. in the embodiments of the present application, these pins, etc. should not be limited to these terms. These terms are only used to distinguish the pins and the like from each other. For example, a first pin may also be referred to as a second pin, and similarly, a second pin may also be referred to as a first pin, without departing from the scope of embodiments of the present application.

The applicant provides a solution to the problems of the prior art through intensive research.

Fig. 3 is a schematic view of a display module according to an embodiment of the disclosure, and fig. 4 is a schematic cross-sectional view of fig. 3.

As shown in fig. 3, the display module provided in the embodiment of the present application includes a display panel 10 and a driving component 20, and the driving component 20 can provide a signal required for light emission for the display panel 10.

The display panel 10 includes a display area AA and a non-display area NA, the display area AA is an area of the display panel where light is emitted, and the non-display area NA surrounds the display area AA and is mainly an area where a peripheral circuit and a peripheral signal line are packaged and disposed. Further, the non-display area NA includes a binding end NA1, and a binding pin for binding with the driving assembly 20 is disposed in the binding end NA 1.

The driving assembly 20 includes at least two driving chips (ICs) 21, at least one flexible board 22 and a hard board 23.

The driving chip 21 is connected to the bonding terminal NA1 of the display panel 10, and specifically, the pins on the driving chip 21 may be electrically connected to the bonding pins disposed in the bonding terminal NA1, for example, the two are electrically connected by a conductive adhesive or solder. The driving chip 21 may be a data driving chip for driving the data lines DL in the display panel 10, a scan driving chip for driving the scan lines SL in the display panel 10, or a display driving chip for driving the data lines DL and the scan lines SL in the display panel 10.

The flexible board 22 may be a Flexible Printed Circuit (FPC), and has advantages of high wiring density and good bending property. The soft board 22 has one end connected to the driver chip 21 and the other end connected to the hard board 23, so as to connect the driver chip 21 and the hard board 23, specifically, a part of the pins in the soft board 22 are electrically connected to the bonding pins disposed in the bonding terminal NA1 and a part of the pins are electrically connected to at least a part of the pins in the hard board 23.

The hard board 23 may be a Printed Circuit Board (PCB), and the hard board 23 may be used as a main board for providing the driving chip 21 with an electrical signal and receiving the signal sent back by the driving chip for calculation and analysis.

In the display module provided in the embodiment of the present application, at least one flexible board 22 is connected to two driving chips 21 at the same time, that is, at least two driving chips 21 are electrically connected to the hard board 23 through the same flexible board 22. Prior Art

As can be seen from comparing fig. 3 and 4 with fig. 1 and 2, compared with the display module in the prior art, the display module provided in the embodiment of the present application has the advantages that the number of the soft boards 22 is reduced, the width of the hard board 23 can be reduced, and the material and routing design difficulty of the hard board 23 is reduced. Taking the example that the driving element 20 includes four driving chips 21 as an example, the width D1 of the hard plate 23 of the driving element 20 in the display module adopting the inventive concept of the present application is about 190mm, and the width D2 of the hard plate 23 of the driving element 20 in the display module of the prior art is about 230 mm.

In the process of connecting the hard board 23 and the soft board 22, a machine table is required to press the position where the hard board 23 and the soft board 22 are combined. In order to avoid damage to the devices in the hard board 23 when the machine presses the hard board 23 and the soft board 22, the position of the hard board 23 corresponding to the pressing position is a device forbidden area 230, that is, the device forbidden area 230 of the hard board 23 is an area where the machine presses the hard board 23 and the soft board 22, and no device is set in the area.

The width of the device keep-out region 230 of the hard plate 23 in the display module according to the inventive concept of the present application is d1, the width of the device keep-out region 230 of the hard plate 23 in the display module according to the prior art is d2, d1 is about 1.5 times of d2, for example, d1 is about 65mm, and d2 is about 40mm according to the prior art. Although the width d1 of the device keep-out region 230 using the inventive concept of the present application is increased relative to the width d2 of the prior art device keep-out region 230, the number of device keep-out regions 230 in the embodiments of the present application is reduced relative to the number of prior art device keep-out regions 230. In the display module provided in the embodiment of the present application, the area of the device forbidden region 230 of the driving component 20 is reduced, so that the effective area of the device in the hard board 23 can be increased, and the width of the hard board 23 can be further shortened. Taking the example that the driving component 20 includes four driving chips 21 as an example, the width of the device keep-out region 230 of the hard board 23 of the driving component 20 in the display module adopting the inventive concept of the present application is reduced by about 25% compared to the width of the device keep-out region 230 of the hard board 23 of the driving component 20 in the display module of the prior art, for example, the width of the device keep-out region 230 of the hard board 23 of the driving component 20 in the display module adopting the inventive concept of the present application is about 130mm, and the width of the device keep-out region 230 of the hard board 23 of the driving component 20 in the display module of the prior art is about 170 mm.

In addition, the number of the soft boards 22 is reduced, and each driving chip 21 does not need to be correspondingly connected with the soft boards 22 one by one, so that the driving chips 21 do not move inwards due to the limitation of the size of the hard board 23, and the display split phenomenon of the display panel and the display device can be further improved.

Fig. 5 is a schematic diagram of a flexible board connected with two driving chips.

In one embodiment of the present application, as shown in fig. 5, the distance width L of the gap between two driver chips 21 connected to one flexible board 22 in the plane of the driver chips 21 is greater than or equal to 10 mm. That is, when two driver chips 21 are connected to the same flexible board 22, the distance between the two driver chips 21 is 10mm or more. When the driving chips 21 are pressed against the display panel 10, the head of the pressing jig can be placed between the two driving chips 21 without damaging the driving chips 21.

Optionally, the distance between any two adjacent driving chips 21 is the same and is greater than or equal to 10 mm.

In one embodiment of the present application, as shown in fig. 3, two adjacent driver chips 21 are correspondingly connected to one flexible board 22, that is, each two adjacent driver chips 21 are connected to one flexible board 22. The number of the soft boards 22 can be effectively reduced and the width of the hard board 23 can be reduced.

For example, when the driving assembly 20 includes N driving chips 21 and N is an even number, the driving assembly 20 may include N/2 flexible boards 22 connected to the driving chips 21, and any one flexible board 22 of the N/2 flexible boards 22 is connected to two driving chips 21.

For example, when the driving assembly 20 includes N driving chips 21 and N is an odd number, the driving assembly 20 may include (N +1)/2 flexible boards 22 connected to the driving chips 21, and one flexible board 22 located in the middle of the (N +1)/2 flexible boards 22 may be connected to one driving chip 21 and the other flexible boards 22 are connected to two driving chips 21.

Preferably, any one of the flexible boards 22 connected to the driving chips 21 is connected to both of the driving chips 21.

Fig. 6 is a schematic view of a display module according to an embodiment of the present disclosure.

In one embodiment of the present application, as shown in fig. 6, the driving assembly 20 includes at least four driving chips 21 arranged along the first direction X, i.e., at least four driving chips 21 bound with the display panel 10 are arranged along the first direction X.

The at least four driving chips 21 arranged along the first direction X include edge driving chips 21a and intermediate driving chips 21b, and the intermediate driving chips 21b are located between the edge driving chips 21 a. The edge driving chips 21a may be the driving chips 21 located at both end positions among the at least four driving chips 21 arranged along the first direction X; the middle driving chip 21b may be the other driving chips 21 except between the edge driving chips 21a among the at least four driving chips 21 arranged along the first direction X.

In the embodiment of the present application, the edge driver chips 21a are connected to the flexible boards 22 in a one-to-one correspondence, and two adjacent middle driver chips 21b are connected to one flexible board 22 in a corresponding manner. That is, of the at least four driving chips arranged in the first direction X, the flexible boards 22 to which the edge driving chips 21a located at both ends are connected to only one driving chip 21, and the flexible boards 22 to which the middle driving chip 21b located at the inner side is connected may be connected to two driving chips 21.

The plurality of flexible boards 22 in the driving assembly 20 include edge flexible boards 22a and middle flexible boards 22b, the edge flexible boards 22a are connected to the edge driving chips 21a and only connected to the one driving chip 21, and the middle flexible boards 22b are connected to the middle driving chips 21b and connected to the two middle driving chips 21 b.

In the solution of the present embodiment, as shown in fig. 6, the width of the flexible board 22 connected to the edge driver chip 21a is W1, and the width of the flexible board 22 connected to the middle driver chip 21b is W2, where W1 is W2. That is, the edge soft plates 22a and the middle soft plates 22b have the same width in the first direction X.

Optionally, the length, width and thickness of the edge soft plate 22a and the middle soft plate 22b are the same.

In the technical solution of the present embodiment, as shown in fig. 6, the flexible board 22 connected to the edge driving chip 21a includes a dummy area a2 and a first area a 1; the leads located in the dummy area a2 float, and the leads located in the first area a1 are connected to the edge drive chip 21 a. That is, the width W1 of the edge flexible board 22a is the same as the width W2 of the middle flexible board 22b, so that the design of the signal lines, components, and the like corresponding to the pins connected to the edge driver chip 21a in the first region a1 of the edge flexible board 22a can be the same as the design of the signal lines, components, and the like corresponding to the pins connected to the middle driver chip 21b in the middle flexible board 22 b. In addition, pins may be disposed in the dummy area a2 of the edge soft board 22a and may float.

In the present embodiment, although the number of the driver chips 21 connected to the edge flexible board 22a and the middle flexible board 22b is different, the design difference between the edge flexible board 22a and the middle flexible board 22b can be reduced by providing the dummy area a2 on the edge flexible board 22 a. The display module provided by the technical scheme can avoid the problem that signals provided by the edge driving chip 21a and the middle driving chip 21b for signal lines in the display area AA are different due to different numbers of the driving chips 21 connected with the edge soft board 22a and the middle soft board 22 b.

Preferably, as shown in fig. 6, the dummy region a2 is located on a side of the first region a1 close to the flexible board 22 connected to the intermediate driver chip 22b, i.e., the first region a1 is located on a side of the dummy region a2 away from the intermediate flexible board 22 b. That is, the region of the edge flexible board 22a connected to the edge driving chip 21a is a region distant from the middle flexible board 22 b.

With reference to fig. 6, the left edge flexible board 22a and the left edge driver chip 21a are taken as an example for explanation.

The middle driver chip 21b, which is close to the edge driver chip 21a, includes a portion aligned with the middle soft board 22b to which it is connected, which is closer to the pins in the middle soft board 22b to which it is connected and may be named as the proximal end of the middle driver chip 21b, and a protruding portion farther from the pins in the middle soft board 22b to which it is connected and may be named as the distal end of the middle driver chip 21 b.

In addition, the edge-driving chip 21a is connected to the pins in the first region a1 in the edge flexible board 22a, so the edge-driving chip 21a includes a portion aligned with the first region a1 to which it is connected and which is closer to the pins in the first region a1 to which it is connected and may be named as the proximal end of the edge-driving chip 21a, and a protruding portion which is farther from the pins in the first region a1 to which it is connected and may be named as the distal end of the edge-driving chip 21 a.

That is, the portions of the edge driver chip 21a that are close to the adjacent intermediate driver chip 21b are both distal ends of both. The difference between the signal output from the pin close to the middle driver chip 21b in the edge driver chip 21a and the signal output from the pin close to the edge driver chip 21a in the middle driver chip 21b is reduced, thereby avoiding the display difference in different areas of the display panel.

Fig. 7 is a schematic view of a display module according to an embodiment of the present disclosure, fig. 8 is a schematic view of an electrical connection between a display panel and a driving device in the display module shown in fig. 7, and fig. 9 is a schematic view of an electrical connection between a display panel and a driving device in the display module shown in fig. 7.

In an embodiment of the present application, as shown in fig. 7, at least two sets of shift registers SR and a first signal line CL for transmitting a clock signal CS and/or a trigger signal STV to the shift registers SR are disposed in the non-display area NA, and the at least two sets of shift registers SR are respectively located at two sides of the display area AA along the first direction X. The shift register SR includes a cascade gate driving circuit, and an output terminal of the gate driving circuit is connected to the scan line SL and outputs a signal for turning on the thin film transistor electrically connected to the scan line SL. The following description will be given taking the first signal line CL as an example of transferring the clock signal CS and the trigger signal STV to the shift register SR.

As shown in fig. 8 and 9, at least a portion of the driving chip 21 includes a first pin P1, and the first pin P1 is electrically connected to the bonding end of the display panel 10 and electrically connected to the first signal line CL. Specifically, the binding terminal NA1 of the display panel 10 includes a first pad P1 ', and the first pad P1 ' is connected to the first signal line CL, when the driving chip 21 is bound to the display panel 10, the first pin P1 on the driving chip 21 is electrically connected to the first pad P1 ' on the display panel 10, so that the first pin P1 on the driving chip 21 is electrically connected to the first signal line CL.

In the present embodiment, as shown in fig. 7, 8 and 9, the clock signal CS is transmitted to the first signal line CL through at least a part of the driving chip 21.

In the technical solution of the embodiment of the present application, please refer to fig. 7, the driving component 20 includes at least four driving chips 21 arranged along the first direction X, wherein the clock signal CS is transmitted to the first signal line CL from the driving chip 21 located at the edge of the at least four driving chips 21. I.e., the clock signal CS and the trigger signal STV are transmitted to the first signal line CL via the edge driving chip 21a, the transmission paths of the clock signal CS and the trigger signal STV can be reduced.

In the technical solution of the embodiment of the present application, please refer to fig. 8 and 9, the driving chip 21 includes at least two edge regions arranged along the first direction X, and the first pin P1 is located at an edge region of the driving chip 21 close to the shift register SR, as shown in fig. 8 and 9, the driving chip 21 includes a left edge region and a right edge region arranged along the first direction X, wherein the shift register SR is disposed at one side of the left edge region of the driving chip 21, and the first pin P1 is located at the left edge region, so as to facilitate the wiring and connection of the first signal line CL.

In one implementation of the present embodiment, as shown in fig. 8, the clock signal CS and the trigger signal STV are generated by the driver chip 21 and transmitted to the first signal line CL. Specifically, the clock signal CS and the trigger signal STV generated by the driving chip 21 are transmitted to the first signal line CL via the first pin P1 on the driving chip 21 and the first pad P1' on the bonding terminal NA1 of the display panel 10.

That is, in this implementation, the driving chip 21 may be a display driving chip, and the generated signals may be directly transmitted to the display panel 10 for driving or controlling the circuit to drive the data lines DL and the scan lines SL.

In one implementation of the present embodiment, as shown in fig. 9, the clock signal CS and the trigger signal STV are generated by the hard board 23 and transmitted to the first signal line CL via the soft board 22 and at least a part of the driving chip 21. The clock signal CS generated by the hard board 23 is transmitted to the first signal line CL via the soft board 22 and the driver chip 21.

In this implementation, the driving chip 21 may be a data driving chip, and the generated signal may be directly transmitted to the display panel 10 for driving or controlling the circuit to drive the data lines DL. And a gate driving chip is integrated in the hard board 23, the gate driving chip in the hard board 23 may generate the clock signal CS and the trigger signal STV.

In a corresponding technical solution of this embodiment, at least a portion of the driving chip 21 further includes a second pin P2, and the second pin P2 receives the clock signal CS and the trigger signal STV transmitted by the flexible printed circuit board 22. Specifically, as shown in fig. 9, the bonding terminal NA1 of the display panel 10 further includes a second pad P2 'and a third pad P2 ", wherein the second pad P2' is electrically connected to the third pad P2", the second pad P2 "is bonded to the second pin P2 of the driver chip 21, and the third pad P2" is bonded to the pin of the flexible printed circuit board 22 for transmitting the clock signal CS and the trigger signal STV. The flexible board 22 may be transmitted to the first signal line CL through the third pad P2 ", the second pad P2 '/the second pin P2, the first pad P1'/the first pin P1 when the second pad P2 'is electrically conducted with the first pad P1' or the first pin P1 is electrically conducted with the second pin P2.

FIG. 10 is a schematic diagram of an electrical connection between the display panel and the driving device in the display module shown in FIG. 9.

Alternatively, as shown in fig. 10, the first pin P1 and the second pin P2 on the driving chip 21 are electrically connected by a first connection line L1, and the first connection line L1 is provided on the driving chip 21. That is, the first pin P1 and the second pin P2 of the driver chip 21 are electrically connected by the first connection line L1.

FIG. 11 is a schematic diagram of an electrical connection between the display panel and the driving device in the display module shown in FIG. 9.

Alternatively, as shown in fig. 11, the first pin P1 and the second pin P2 on the driving chip 21 are electrically connected by a second connection line L2, and the second connection line L2 is disposed on the display panel 10. That is, the second connection line L2 is disposed between the first pad P1' and the second pad P2 on the display panel 21 and is connected to the second connection line L2. When the driving chip 21 is bonded to the display panel 10, the end of the first pin P1 bonded to the first pad P1 'on the driving chip 21 is electrically connected to the end of the second connection line L2, and the end of the second pin P2 bonded to the second pad P2' is electrically connected to the other end of the second connection line L2.

Fig. 12 is a schematic view of a display module according to an embodiment of the disclosure, and fig. 13 is a schematic view of an electrical connection between a display panel and a driving assembly in the display module shown in fig. 12.

In an embodiment of the present application, as shown in fig. 12 and 13, the driving assembly 20 includes at least four driving chips 21 arranged along the first direction X, and among the flexible boards 22 electrically connected to the at least four driving chips 21, the flexible board 22 connected to the driving chip 21 located at the edge includes a third pin P3, the third pin P3 is electrically connected to a pin in the binding terminal NA1 of the display panel 10, and the third pin P3 is electrically connected to the first signal line CL.

The clock signal CS is generated by the hard board 23 and transmitted to the first signal line CL through the soft board 22 including the third pin P3. That is, in the present embodiment, the third pin P3 of the flexible printed circuit board 22 is bound to the first pad P1 'of the display panel 10 electrically connected to the first signal line CL, and the clock signal CS generated by the hard printed circuit board 23 is transmitted to the first signal line CL via the third pin P3 of the flexible printed circuit board 22 and the first pad P1' of the display panel 10.

Specifically, the edge device 22a included in the driving device 20 includes a third pin P3, and the clock signal is generated by the hard board 23 and transmitted to the first signal line CL via the third pin P3 of the edge device 22a and the first pad P1' of the display panel 10 bound to the third pin P3.

It is understood that, in the present embodiment, the driving chip 21 may be a data driving chip, and the generated signal may be directly transmitted to the display panel 10 for driving or controlling the circuit to drive the data lines DL. And a gate driving chip is integrated in the hard board 23, the gate driving chip in the hard board 23 may generate the clock signal CS and the trigger signal STV.

An embodiment of the present application provides a display device, as shown in fig. 14, including the display panel 001 according to any one of the embodiments described above. The display device provided by the embodiment of the application is preferably a medium-sized display device or a large-sized display device, and can be a display device such as a notebook computer, a desktop computer, a tablet computer and a television. In addition, the display device provided by the embodiment of the application can also be a mobile phone and the like.

In the display device provided in the embodiment of the present application, the number of the flexible boards 22 can be reduced by electrically connecting at least one flexible board 22 with two driving chips 21. The reduction of the number of the soft boards 22 reduces the device forbidden area 230 that needs to be reserved when the hard board 23 is bound with the soft boards 22, so that the device setting space in the hard board 23 can be increased, and the overall size of the hard board 23 can be reduced. In addition, the reduction of the number of the soft boards 22 enables the driving chips 21 at both ends to move inwards without being limited by the size of the hard board 23, thereby improving the edge display split phenomenon of the display device. Moreover, the edge of the soft board 22 is basically aligned with the edge of the hard board 23, and when the number of the soft boards 22 is reduced, the width of the hard board 23 can be reduced, so that the size of the hard board 23 is reduced, the material consumption and wiring design difficulty of the hard board 23 are reduced, and the cost of the display device is reduced.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A display module, comprising:

the driving chip is connected with the binding end of the display panel, one end of the soft board is connected with the driving chip, and the other end of the soft board is connected with the hard board; at least one flexible board is connected with the two driving chips at the same time.

2. The display module according to claim 1, wherein two adjacent driving chips are correspondingly connected to one of the flexible boards.

3. The display module of claim 1, wherein the driving assembly comprises at least four driving chips arranged along a first direction;

4. The display module as claimed in claim 3, wherein the width of the flexible board connected to the edge driving chip is W1, and the width of the flexible board connected to the middle driving chip is W2, W1 ═ W2.

5. The display module according to claim 3, wherein the flexible board connected to the edge driving chip comprises a dummy area and a first area; the pins in the dummy area float, and the pins in the first area are connected with the edge driving chip.

6. The display module of claim 5, wherein the dummy region is located at a side of the first region adjacent to the flexible board connected to the intermediate driving chip.

7. The display module of claim 1, wherein the width of the gap between two driving chips connected to one of the flexible boards is greater than or equal to 10mm in the plane of the driving chips.

8. The display module according to claim 1, wherein at least two sets of shift registers and a first signal line for transmitting clock signals and/or trigger signals to the shift registers are disposed in the non-display region; the at least two groups of shift registers are respectively positioned at two sides of the display area along a first direction;

at least part of the driving chips comprise first pins, and the first pins are electrically connected with the binding end of the display panel and electrically connected with the first signal line; the clock signal and/or the trigger signal are transmitted to the first signal line via at least part of the driving chip.

9. The display module of claim 8, wherein the driving assembly comprises at least four driving chips arranged along the first direction;

10. The display module of claim 8, wherein the driving chip comprises at least two edge regions arranged along the first direction, and the first pin is located at an edge region of the driving chip close to the shift register.

11. The display module of claim 8, wherein the clock signal and/or the trigger signal are generated by the hard board and transmitted to the first signal line via the soft board and at least a portion of the driving chip.

12. The display module according to claim 11, wherein at least some of the driving chips further comprise a second pin, and the second pin receives a clock signal and/or a trigger signal transmitted by the flexible printed circuit board;

13. The display module according to claim 11, wherein at least some of the driving chips further comprise a second pin, and the second pin receives a clock signal and/or a trigger signal transmitted by the flexible printed circuit board;

14. The display module assembly of claim 13, wherein the bonding end of the display panel comprises a first bonding pad and a second bonding pad, the first bonding pad is electrically connected to the first signal line and is bonded to the first pin, and the second bonding pad is bonded to the second pin;

15. The display module according to claim 8, wherein the clock signal and/or the trigger signal are generated by the driving chip and transmitted to the first signal line.

16. The display module of claim 1, wherein the driving assembly comprises at least four driving chips arranged along a first direction;

17. A display device comprising the display module according to any one of claims 1 to 16.