CN213303615U - Integrated liquid crystal display driving equipment - Google Patents
Integrated liquid crystal display driving equipment Download PDFInfo
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- CN213303615U CN213303615U CN202021721522.8U CN202021721522U CN213303615U CN 213303615 U CN213303615 U CN 213303615U CN 202021721522 U CN202021721522 U CN 202021721522U CN 213303615 U CN213303615 U CN 213303615U
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- control module
- backlight
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- crystal display
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Abstract
An integrated LCD driving device comprises an LCD control module, a first backlight control module, a second backlight control module, an LVDS interface, a signal input interface and a power supply module, wherein the LCD control module is used for controlling the output of the first backlight control module and the output of the second backlight control module, and the signal input by the signal input interface is converted into a display signal and is output through the LVDS interface, the first backlight control module receives a control signal of the LCD control module and outputs a stable current to light a backlight of the liquid crystal display panel, the second backlight control module receives the control signal of the LCD control module, the LVDS interface is used for outputting the display signal for driving the liquid crystal display panel to the LVDS interface of the liquid crystal display panel, the signal input module provides input of the display signal for the LCD module, and the power supply module provides working voltage for the LCD control module, the first backlight control module and the second backlight control module. Has the advantages that: the driving device of the liquid crystal display panel is simplified, and the installation, debugging and maintenance are easy.
Description
Technical Field
The utility model relates to an integration LCD drive apparatus.
Background
Liquid crystal displays are flat, ultra-thin display devices consisting of a certain number of color and black and white pixels placed in front of a light source or reflecting surface. The liquid crystal display has the characteristics of low power consumption, thin body, space saving, high image quality display and the like, and is widely applied to the fields of public service, rail transit, information media, safety precaution systems and other industries. The liquid crystal display is an inactive light-emitting electronic device, which does not have the light-emitting characteristic, and the display performance can be obtained only by depending on the emission of the light source in the backlight module, so the brightness of the liquid crystal display is determined by the backlight module. Although the lcd has the advantage of being light and thin, its installation and debugging are also more complicated and important links. The driving device of the liquid crystal display at present comprises a driving mainboard, a backlight plate and a power supply plate, wherein the driving mainboard provides LVDS signals for the liquid crystal display, the power supply plate provides working voltage for the backlight plate, and the backlight plate outputs stable direct current. The driving device is complex in structure, needs three circuit boards to form, is complex in process, consumes more raw materials, increases cost, consumes more time in installation, further improves labor cost, and increases later maintenance cost and difficulty.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect that the structure of the driving device of the existing liquid crystal display is complex, the utility model provides an integrated driving device of the liquid crystal display, which aims to simplify the driving device of the liquid crystal display.
An integrated LCD driving device comprises an LCD control module, a first backlight control module, a second backlight control module, an LVDS interface, a signal input interface and a power module, wherein the LCD control module is used for controlling the output of the first backlight control module and the second backlight control module and converting a signal input by the signal input interface into a display signal to be output through the LVDS interface, the first backlight control module receives the control signal of the LCD control module and outputs a stable current to directly light a backlight lamp of a liquid crystal display panel, the second backlight control module receives the control signal of the LCD control module and outputs a control signal containing PWM, an enable signal and a voltage source to indirectly control the backlight of the liquid crystal display panel, the LVDS interface is used for outputting the display signal for driving the liquid crystal display panel to the LVDS interface of the liquid crystal display panel, and the signal input module provides the input of the display signal for the LCD module, the power supply module provides working voltage for the LCD control module, the backlight control module I and the backlight control module II.
Further, the signal input interface may be one of VGA, HDM I, DP, DVI or network interface.
The utility model has the advantages that: because the original driving main board, the backlight board and the power board are integrated on the main control integrated circuit board, constant backlight control current and backlight control signals can be output, and LVDS signals can be output to the liquid crystal display, the device can meet the requirements of most liquid crystal displays and has universal adaptability. When the power of the liquid crystal display is higher, the device can still be externally connected with a backlight plate, and is connected with the display according to the original mode, so that the device has compatibility.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a diagram of backlight power consumption within 48 w;
fig. 3 is a schematic diagram of backlight power consumption exceeding 48 w.
Detailed Description
The following further explains the specific embodiments of the present invention with reference to the drawings:
as shown in fig. 1, an integrated LCD driving apparatus includes an LCD control module (400), a first backlight control module (100), a second backlight control module (200), an LVDS interface (300), a signal input interface 500 and a power module 600, the LCD control module 400 is configured to control outputs of the first backlight control module (100) and the second backlight control module (200), convert a signal input by the signal input interface (500) into a display signal and output the display signal through the LVDS interface (300), the first backlight control module (100) receives a control signal of the LCD control module (400) and outputs a stable current to directly light a backlight of an LCD panel, the second backlight control module (200) receives the control signal of the LCD control module (400) and outputs a control signal including PWM, an enable signal and a voltage source to indirectly control the backlight of the LCD panel, the LVDS interface (300) is used for outputting a display signal for driving the liquid crystal display panel to the LVDS interface (300) of the liquid crystal display panel, and the power supply module provides working voltage for the LCD control module (400), the backlight control module I (100) and the backlight control module II (200).
When the backlight power consumption of the liquid crystal display panel driven by the device is within a certain range, generally not more than 48W, as shown in fig. 2, the backlight interface of the liquid crystal display panel is connected to the first backlight control module (100) through a connection line, and the display interface of the liquid crystal display panel is connected to the LVDS interface (300) through a connection line, in this using mode, the LCD control module (400) receives the data input by the signal input interface (500), converts the data into a display signal after analysis, and sends the display signal to the LVDS interface (300) for refreshing the display content of the liquid crystal display panel, and outputs a control signal to control the first backlight control module (100), and the first backlight control module (100) outputs a stable current to directly light the backlight of the liquid crystal display panel after receiving the control signal of the LCD control module (400), the functions of controlling the brightness and the switch of the liquid crystal display panel are realized.
When the backlight power consumption of the liquid crystal display panel driven by the device exceeds a certain range, generally exceeds 48W, as shown in fig. 3, the backlight interface of the liquid crystal display panel is connected to the backlight plate carried by the liquid crystal display panel or provided by a third party through a connecting line, then the control interface of the backlight plate is connected to the backlight control module two (200), and meanwhile the display interface of the liquid crystal display panel is connected to the LVDS interface (300) through a connecting line, in this using mode, the LCD control module (400) receives the data input by the signal input interface (500), and converts the data into a display signal after analysis, and sends the display signal into the LVDS interface (300) for refreshing the display content of the liquid crystal display panel and outputting a control signal to control the backlight control module two (200), after the backlight control module two (200) receives the control signal of the LCD control module (400), and outputting a PWM signal, wherein the backlight enabling signal is used for controlling the output current of the backlight plate, and the functions of controlling the backlight brightness and the switch of the liquid crystal display panel are realized.
The utility model relates to an integration LCD drive device is different from prior art: the original backlight plate, the power panel and the main control panel are simplified and then integrated into a driving board, the original backlight plate exists on the driving board in the form of a backlight control module, and the power module on the driving board replaces the original power panel. Under the condition that the power consumption of the liquid crystal display is within a certain range, the display function can be completed by one driving board, the driving board is suitable for most liquid crystal displays, and compared with the original design, the driving board simplifies the process and reduces the cost. Under the condition that the power consumption of the liquid crystal display exceeds a certain range, the backlight control module and the power supply module are not used, the backlight plate and the power supply plate are externally connected through the backlight control interface, the display work is completed according to the original form, and the original working mode is reserved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. An integrated LCD driving device comprises an LCD control module, a first backlight control module, a second backlight control module, an LVDS interface, a signal input interface and a power supply module,
the LCD control module is used for controlling the output of the first backlight control module and the second backlight control module, converting the signal input by the signal input interface into a display signal and outputting the display signal through the LVDS interface;
the backlight control module I is used for receiving a control signal of the LCD control module;
the second backlight control module is used for receiving the control signal of the LCD control module and outputting a control signal which comprises PWM, an enabling signal and a voltage source and can indirectly control the backlight of the liquid crystal display panel;
the LVDS interface is used for outputting a display signal for driving the liquid crystal display panel to the LVDS interface of the liquid crystal display panel;
the signal input interface is used for providing input of display signals for the LCD control module;
the power supply module is used for providing working voltage for the LCD control module, the backlight control module I and the backlight control module II.
2. The integrated liquid crystal display driving apparatus as claimed in claim 1, wherein the backlight control module outputs a steady current to turn on the backlight of the liquid crystal display panel.
3. The integrated liquid crystal display driving apparatus as claimed in claim 1, wherein the signal input interface is one of VGA, HDMI, DP, DVI or network interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021721522.8U CN213303615U (en) | 2020-08-17 | 2020-08-17 | Integrated liquid crystal display driving equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021721522.8U CN213303615U (en) | 2020-08-17 | 2020-08-17 | Integrated liquid crystal display driving equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213303615U true CN213303615U (en) | 2021-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021721522.8U Active CN213303615U (en) | 2020-08-17 | 2020-08-17 | Integrated liquid crystal display driving equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213303615U (en) |
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- 2020-08-17 CN CN202021721522.8U patent/CN213303615U/en active Active
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