CN214376422U

CN214376422U - Modularized liquid crystal display testing device

Info

Publication number: CN214376422U
Application number: CN202120074263.2U
Authority: CN
Inventors: 杨建军; 刘晓凯; 班寿星
Original assignee: JIYA (LANGFANG) ELECTRONICS CO Ltd
Current assignee: JIYA (LANGFANG) ELECTRONICS CO Ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-10-08
Anticipated expiration: 2031-01-12

Abstract

The utility model discloses a modularized liquid crystal display testing device, which comprises a testing mainboard, wherein the testing mainboard is connected with a functional voltage module, a backlight driving module, an LCD interface and a touch screen interface module in a communication way; the functional voltage module, the backlight driving module, the LCD interface and the test mainboard are detachable; the touch screen interface comprises a plurality of jacks and a pin connector, the jacks are arranged on the test mainboard, one end of the pin connector is inserted into the jacks, the pin connector is in communication connection with the test mainboard through the jacks, and the other end of the pin connector is in communication connection with an adaptive interface on the touch screen; the LCD interface is used for connecting an LCD module. The utility model discloses can correspond the product of a plurality of differences of test, and can only change when testing arrangement's some part damages and damage the part, need not give up whole testing arrangement.

Description

Modularized liquid crystal display testing device

Technical Field

The utility model relates to a testing arrangement technical field, concretely relates to modularization liquid crystal display testing arrangement.

Background

All circuits of the existing testing device are integrated on one testing board, and products with different interfaces need to be drawn with different testing boards to meet testing requirements, so that one testing device can only test products with the same interface, and the universality is not strong; circuit function modules with different functions randomly appear at a certain place of the test board, and circuit analysis is not favorably carried out when a test device has a problem; when a certain part of the testing device is damaged, the whole testing device cannot be used continuously, and resources and cost are wasted.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model aims at providing a modularization liquid crystal display testing arrangement.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a modularized liquid crystal display testing device comprises a testing mainboard, wherein the testing mainboard is in communication connection with a functional voltage module, a backlight driving module, an LCD interface and a touch screen interface; the functional voltage module, the backlight driving module, the LCD interface and the test mainboard are detachable; the touch screen interface comprises a plurality of jacks and a pin connector, the jacks are arranged on the test mainboard, one end of the pin connector is inserted into the jacks, the pin connector is in communication connection with the test mainboard through the jacks, and the other end of the pin connector is in communication connection with an adaptive interface on the touch screen; the LCD interface is used for connecting an LCD module; the test mainboard is also connected with an ARM interface.

It should be noted that the jacks and the pin connectors are arranged in a one-to-one correspondence manner.

It should be noted that the ARM interface is connected to an ARM program board.

It should be noted that the test motherboard is provided with an interface connected with a power supply.

The beneficial effects of the utility model reside in that: one test mainboard can correspondingly test a plurality of different products; resources are saved, when a certain part of the testing device is damaged, only the damaged part can be replaced, and the whole testing device is not abandoned; when a circuit is in a problem, separate circuit analysis can be performed on different modules instead of analyzing the whole test device.

Drawings

FIG. 1 is a schematic view of the structural connection of the present invention;

fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed embodiments and the specific operation processes are provided, but the protection scope of the present invention is not limited to the present embodiment.

The embodiment provides a modular liquid crystal display testing device, as shown in fig. 1-2, which includes a testing motherboard 1, wherein the testing motherboard 1 is in communication connection with a functional voltage module 3, a backlight driving module 2, an LCD interface 4 and a touch screen interface 5; the functional voltage module 3, the backlight driving module 2, the LCD interface 4 and the test mainboard 1 are detachable; the touch screen interface 5 comprises a plurality of jacks and a pin connector, the jacks are arranged on the test mainboard 1, one ends of the pin connectors are inserted into the jacks, the pin connectors are in communication connection with the test mainboard through the jacks, and the other ends of the pin connectors are in communication connection with an interface matched with the touch screen; the LCD interface 4 is used for connecting an LCD module; the test mainboard 1 is also connected with an ARM interface 6.

In the above structure, the functional voltage module is used for providing a voltage for normal display, such as VDD, VCOM, VGH, etc., to the modular liquid crystal product; the backlight driving module is used for providing on-off voltage and current for a backlight source, and the backlight source provides a light source for the modularized liquid crystal product because the modularized liquid crystal product does not emit light; the device is connected with a device for providing display data for the modular liquid crystal product through the ARM interface, the display data are transmitted to the LCD interface from the ARM interface through the test mainboard and then transmitted to the LCD module in the modular liquid crystal product, and the modular liquid crystal product is controlled to be turned on and turned off; then, whether the product is good or bad is detected through the display effect of the modularized liquid crystal product, for example, whether the modularized liquid crystal product leaks light or has a bright spot or not can be detected through the display effect of extinguishing a black screen, and the visual direction and the visual angle range of the modularized liquid crystal product can be detected through the display effect of lighting for picture display.

In order to enable the present embodiment to test products with different interfaces, in the above structure, the pin connectors can be inserted into and pulled out of the jacks; it should be noted that different types of connectors are provided on the pin connector, for example, a general product interface is a VGA interface, a DVI interface or an HDMI interface, and the pin connector needs to be adapted to the above interfaces; different types of pin connectors are selected to be matched with the product according to the interface of the tested product, so that when the tested product is replaced, if the pin connectors are not matched with the interface of the product, the pin connectors can be replaced; the functional voltage module, the backlight driving module, the LCD interface and the touch screen interface can be disassembled and assembled from the test mainboard, so that when a part of the structure is damaged and the test cannot be completed, the test function can be recovered by replacing a new structure without abandoning a whole test board, and resources can be effectively saved; meanwhile, the functional voltage module, the backlight driving module, the LCD interface and the touch screen interface are independently and separately arranged, so that when a circuit problem occurs, one module can be independently subjected to circuit analysis to find the problem, and the whole testing device is not required to be analyzed.

In this embodiment, the insertion holes and the pin connectors are arranged in a one-to-one correspondence.

In this embodiment, as shown in fig. 1-2, the ARM interface 6 is connected to an ARM program board. The ARM program board can be an STM32 program board, an S3C2440 program board and the like, and the program boards are all programmable program boards; the program board provides display data for the modular liquid crystal product through the programmed program.

In this embodiment, the test motherboard is provided with an interface connected to a power supply.

When a user uses the modularized liquid crystal display testing device, the testing mainboard is connected with a power supply, and then a module to be tested is connected with a corresponding interface; if the touch screen needs to be tested, selecting an adaptive contact pin connector to be inserted into the contact pin according to the interface of the touch screen, and then connecting the interface of the touch screen with the contact pin plug; if the LCD module needs to be subjected to display test, the LCD module is connected with the LCD interface, meanwhile, because an ARM program board is connected to the ARM interface, a program is programmed on the ARM program board to provide display data for a modular liquid crystal product, the display data are transmitted to the LCD interface from the ARM interface through the test main board and then transmitted to the LCD module in the modular liquid crystal product, and then the detection is completed by controlling the modular liquid crystal product to be turned on and off.

If the utility model discloses a functional voltage module drive module is shaded the LCD interface the damage appears in some structure in the touch-sensitive screen interface, when leading to can not accomplishing the test, can make it resume test function through replacing new structure, and need not give up the monoblock and survey the board.

Various corresponding changes and modifications can be made by those skilled in the art according to the above technical solutions and concepts, and all such changes and modifications should be included in the protection scope of the present invention.

Claims

1. A modularized liquid crystal display testing device comprises a testing main board (1), and is characterized in that the testing main board (1) is in communication connection with a functional voltage module (3), a backlight driving module (2), an LCD interface (4) and a touch screen interface (5); the functional voltage module (3), the backlight driving module (2), the LCD interface (4) and the test mainboard (1) are detachable; the touch screen interface (5) comprises a plurality of jacks and a pin connector, the jacks are arranged on the test mainboard (1), one ends of the pin connectors are inserted into the jacks, the pin connectors are in communication connection with the test mainboard through the jacks, and the other ends of the pin connectors are in communication connection with an interface matched with the touch screen; the LCD interface (4) is used for connecting an LCD module; the test mainboard (1) is also connected with an ARM interface (6).

2. The modular LCD testing apparatus of claim 1, wherein the sockets and the pin connectors are arranged in a one-to-one correspondence.

3. The modular lcd testing device of claim 1, wherein an ARM programmer is connected to the ARM interface (6).

4. The modular lcd test device according to claim 1, characterized in that the test motherboard (1) is provided with an interface for connection to a power supply.