CN216434287U

CN216434287U - LCM test keysets

Info

Publication number: CN216434287U
Application number: CN202123011094.7U
Authority: CN
Inventors: 陈雄莲; 莫雅馨; 张祥琳
Original assignee: Shenzhen Zhongshen Optoelectronics Co ltd
Current assignee: Shenzhen Zhongshen Optoelectronics Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-05-03
Anticipated expiration: 2031-12-01

Abstract

The utility model discloses a LCM test keysets, including the keysets, and be located first interface board and second interface board on the keysets, wherein, first interface board with the second interface board is used for connecting the LCM test panel that awaits measuring of different models; the power supply selector is electrically connected with the LCM test board to be tested through a switch and used for providing voltage for the LCM test board to be tested; the first interface board and the second interface board are added on the adapter board, and the power selectors used for changing the voltage of the LCM test board to be tested are added, so that the adapter board with various sizes and different signal interfaces can be integrated on the same test adapter board, the cost is saved, and the efficiency is improved.

Description

LCM test keysets

Technical Field

The utility model relates to the technical field of test especially involves a LCM test keysets.

Background

LCM (LCD module) is an LCD display module and a liquid crystal module, and refers to a component which assembles a liquid crystal display device, a connecting piece, a control and LCD driving circuit, a backlight source and the like together.

With the size of the existing product, because of the different appearance structures of the LCM, the required LCM test connection ports are different, different switching test boards are required to be adopted for testing, and the commonly used connection switching boards in the existing market can only test the same type of connector products generally, so that the time and the labor are consumed, and the detection cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a LCM test keysets for on multiple size and different signal interface set the keysets to same test, save the cost, raise the efficiency.

In order to achieve the above object, the utility model provides a following technical scheme:

an LCM test adapter plate comprises an adapter plate, a first interface plate and a second interface plate, wherein the first interface plate and the second interface plate are positioned on the adapter plate and are used for connecting LCM test plates to be tested with different models;

the test system also comprises a plurality of power supply selectors, wherein the power supply selectors are electrically connected with the LCM test board to be tested through switches and used for providing voltage for the LCM test board to be tested.

Furthermore, the switching circuit of the switching board is also included, and the switching circuit comprises a liquid crystal control module, a signal switching module, a power supply module and the liquid crystal display module;

the power supply module is electrically connected with the liquid crystal control module and provides power for the liquid crystal control module;

the liquid crystal control module is electrically connected with the signal switching module, and the signal switching module is electrically connected with the liquid crystal display module.

Furthermore, the signal switching module comprises a communication interface module, the power supply selector, a backlight driving module and a touch screen testing module which are respectively and electrically connected with the liquid crystal control module;

the communication interface module is connected with the liquid crystal display module, the power supply selector is electrically connected with the LCM test board to be tested through the switch, the backlight driving module is electrically connected with the touch screen test module, and the touch screen test module is electrically connected with the liquid crystal display module.

Further, the signal switching module further comprises a function test module, and the function test module comprises an ID test module, a TE test module and a CABC test module;

the ID test module is electrically connected with the liquid crystal control module through a first functional switch, the TE test module is electrically connected with the liquid crystal control module through a second functional switch, and the CABC test module is electrically connected with the liquid crystal control module through a third functional switch.

Further, the signal switching module further comprises an electrostatic detection module;

the static detection module is electrically connected with the liquid crystal control module through a fourth function switch and used for detecting the static damage of the LCM test board to be tested.

Further, the device also comprises a signal testing module;

the signal testing module is connected with the touch screen testing module through a jumper switch.

Further, the interface of the first interface board is an interface terminal of 40 pins;

the interface of the second interface board is an interface terminal of 30 pins.

The utility model provides a pair of LCM test keysets, the beneficial effect who has is, through increasing first interface board and second interface board on the keysets, and increases a plurality of power selectors that are used for changing the voltage that the await measuring LCM surveyed the board to realize that multiple size and different signal interface assemble to the keysets of same test, save the cost, raise the efficiency.

Drawings

Fig. 1 is a schematic structural diagram of an LCM test adapter plate according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a structural module of an LCM test adapter plate according to an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of an LCM test adapter plate according to another embodiment of the present invention.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, an LCM test adapter plate includes an adapter plate 1, and a first interface board 11 and a second interface board 12 located on the adapter plate 1, where the first interface board 11 and the second interface board 12 are used to connect different models of LCM test boards to be tested; the test device further comprises a plurality of power supply selectors 13, wherein the power supply selectors 13 are electrically connected with the LCM test board to be tested through switches and used for providing voltage for the LCM test board to be tested.

LCM (LCD module), namely LCD display module and liquid crystal module, refers to a component which assembles a liquid crystal display device, a connecting piece, a control and LCD driving circuit, a backlight source and the like together, and the LCM test adapter plate is used for testing the LCM, and is connected with a test plate through a liquid crystal display screen and drives the LCM to perform a light emitting test.

In this embodiment, the LCM test adapter plate includes an adapter plate 1, and a first interface plate 11 and a second interface plate 12 disposed on the adapter plate 1, where the first interface plate 11 and the second interface plate 12 are used to connect different models of LCM test plates to be tested, and the LCM test plates to be tested can be placed at positions of the corresponding first interface plate 11 or the second interface plate 12 according to different pin (pin) of the LCM test plates to be tested, and according to a voltage required by the LCM test plates to be tested, the voltage corresponding to the LCM test plates to be tested is selected by a power supply selector 13 to provide a test voltage, so that multiple sizes and different signal interfaces are integrated on the adapter plate for the same test, thereby saving cost and improving efficiency.

In this embodiment, the liquid crystal display device further includes a switching circuit of the switching board 1, where the switching circuit includes a liquid crystal control module 100, a signal switching module 200, a power module 400, and a liquid crystal display module 300; the power module 400 is electrically connected to the liquid crystal control module 100 and provides power to the liquid crystal control module 100; the liquid crystal control module 100 is electrically connected to the signal transfer module 200, and the signal transfer module 200 is electrically connected to the liquid crystal display module 300.

In the present embodiment, the signal transferring module 200 includes a communication interface module 201, a power selector 13, a backlight driving module 202, and a touch screen testing module 203, which are electrically connected to the liquid crystal control module 200 respectively; the communication interface module 201 is connected with the liquid crystal display module 300, the power selector 13 is electrically connected with the LCM test board to be tested through a switch, the backlight driving module 202 is electrically connected with the touch screen test module, and the touch screen test module is electrically connected with the liquid crystal display module 300.

In this embodiment, the test LCM test board to be tested is tested through the adapter circuit of the adapter board 1, when a tester takes the test LCM test board to be tested, the tester puts the test LCM test board to be tested on the corresponding test interface board according to the voltage required by the test LCM test board to be tested and the type of the interface, and manually controls the switch through the power selector 13 to electrically connect the test LCM test board to be tested, so as to provide voltage for the test LCM test board to be tested; when the voltage and the interface signal of the LCM test board to be tested are confirmed, the LCM test board to be tested is tested according to the set control data channel, the picture information transmission data line and the like.

In this embodiment, the signal transfer module 200 further includes a function test module 15, which includes an ID test module, a TE test module, and a CABC test module; the ID test module is electrically connected with the liquid crystal control module 100 through the first function switch, the TE test module is electrically connected with the liquid crystal control module 100 through the second function switch, and the CABC test module is electrically connected with the liquid crystal control module 100 through the third function switch. Wherein, the CABC (Content Adaptive Brightness Control, Content corresponding to backlight Control technology) test module is used for testing the input image Content of the LCM test board to be tested; the ID (identity) test module is used for testing the production model, the code, the identification number and the like of the LCM test board to be tested; the TE (testing effect) testing module is used for testing the problem that residual image refreshing exists in the LCM testing board to be tested under the pure color testing image.

In this embodiment, the signal transferring module 200 further includes a static electricity detecting module; the static electricity detection module is electrically connected with the liquid crystal control module 100 through the fourth function switch and used for detecting static electricity damage of the LCM test board to be tested. In this embodiment, since the driving IC used by the LCM test board to be tested is a C-MOS lsi, and the mounting device needs to prevent static electricity, during the test process, the LCM test board to be tested needs to be tested for its static damage state, so that the adapter board 1 is provided with the static electricity detection module for electrically connecting to the LCM test board to be tested, thereby implementing the function test of the static damage condition.

In this embodiment, a signal testing module 14 is further included; the signal testing module 14 is connected with the touch screen testing module 203 through a jumper switch. The signal testing module 14 is connected to the touch screen testing module 203 to form a touch testing circuit for providing a touch driving signal, and the backlight driving module 202 is connected to the backlight circuit for providing backlight driving of various voltage and current for the liquid crystal display module 300.

In this embodiment, the interface of the first interface board 11 is an interface terminal of 40 pins; the interface of the second interface board 12 is a 30pin interface terminal. The interface with different pin pins is adopted, and the interface can be applied to LCM test boards with different interface terminals, for example, the first interface board 11 is an interface terminal with an interface of 40pin, and 4.3-10.1 inch MIPI (Mobile Industry Processor interface) interface and LVDS (Low-Voltage Differential Signaling) interface can be applied, so that the interface can be applied to different data signals, for example, the LVDS interface is only used for transmitting video data, and MIPI DSI can not only transmit video data, but also transmit control instructions; the LVDS interface mainly converts RGB TTL signals into LVDS signals for transmission according to an SPWG/JEIDA format, and the MIPI DSI interface transmits video data and control data required by screen control according to a specific handshake sequence and an instruction rule. The second interface board 12 is an interface terminal with an interface of 30 pins, can be applied to a MIPI interface and a LVDS interface from 4.3 inches to 10.1 inches, and adopts two interface boards with different models, so that multiple sizes and different signal interfaces are integrated on the same test adapter board, the cost is saved, the test of a tester is facilitated, and the efficiency is improved.

The utility model discloses a LCM test keysets, through increasing first interface board 11 and second interface board 12 on keysets 1, and increase a plurality of power selectors 13 that are used for changing the voltage that the await measuring LCM surveyed the board to realize that multiple size and different signal interface assemble to the keysets 1 of same test, save the cost, raise the efficiency.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims

1. An LCM test adapter plate comprises an adapter plate and is characterized by comprising a first interface board and a second interface board which are positioned on the adapter plate, wherein the first interface board and the second interface board are used for connecting LCM test plates to be tested with different models;

2. The LCM test adapter plate of claim 1, further comprising an adapter circuit of the adapter plate, wherein the adapter circuit comprises a liquid crystal control module, a signal adapter module, a power supply module and a liquid crystal display module;

3. The LCM test adapter plate of claim 2, wherein the signal adapter module comprises a communication interface module, the power selector, a backlight driving module and a touch screen test module which are respectively electrically connected with the liquid crystal control module;

4. The LCM test patch panel of claim 3, wherein the signal patch module further comprises functional test modules including an ID test module, a TE test module, and a CABC test module;

5. The LCM test adapter plate of claim 3, wherein the signal adapter module further comprises a static detection module;

6. The LCM test adapter plate of claim 3, further comprising a signal testing module;

7. The LCM test adapter plate of claim 1, wherein the interface of the first interface board is a 40pin interface terminal;