CN214955954U

CN214955954U - Liquid crystal display module power-on test fixture

Info

Publication number: CN214955954U
Application number: CN202121336789.XU
Authority: CN
Inventors: 彭建新
Original assignee: Jiangxi Holitech Technology Co Ltd
Current assignee: Jiangxi Holitech Technology Co Ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-11-30
Anticipated expiration: 2031-06-16

Abstract

A power-on test fixture for liquid crystal display module comprises a test box, a module placing board and a module testing board, the module test board is fixedly arranged on the upper end surface of the test box body, the module placing board is obliquely arranged on one side surface of the test box body, the module placing plate is provided with a mounting groove matched with the display module, the bottom of the mounting groove is fixedly provided with two limiting blocks, the limiting blocks are respectively provided with a limiting groove matched with the display module, two ends of the mounting groove are respectively provided with a handle groove, the handle groove is communicated with the mounting groove, the module test board is also provided with an FPC placing groove, the FPC placing groove is aligned with the mounting groove, one side of the FPC placing groove is fixedly provided with a PCB, a test circuit is arranged in the test box body, and the PCB is electrically connected with the test circuit in the test box body through a circuit. The utility model has the advantages of reasonable design, the location is accurate, can accomplish display module's circular telegram test fast.

Description

Liquid crystal display module power-on test fixture

Technical Field

The utility model relates to a test technical field in a poor light specifically is a liquid crystal display module circular telegram test fixture.

Background

At present, when the liquid crystal display module is subjected to power-on test, the FPC is bound on the display module, and then the test of the liquid crystal display module is completed by powering on the FPC. However, in the current testing process, an operator generally attaches the golden finger of the FPC to the testing circuit manually, and then energizes the testing circuit to complete the energization test of the liquid crystal display module through the PCB. However, at present, in the testing process, because the finished liquid crystal display module and the FPC cannot be well positioned, the stability of connection between the FPC and a tested PCB is difficult to ensure in the testing process, an operator needs to judge according to own experience, the requirement on the operator is high, the detection efficiency is low, and the detection result is not accurate enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of existence among the prior art, provide a liquid crystal display module circular telegram test fixture, solved among the prior art artifical manual when carrying out the circular telegram test to liquid crystal display module, need the operation workman to rely on the experience of oneself to go to judge, higher to operation staff's requirement, and detection efficiency is low, problem that the testing result is not accurate enough.

In order to realize the purpose, the utility model discloses a technical scheme be:

a liquid crystal display module power-on test fixture comprises a test box body, a module placing board and a module test board, wherein the module test board is fixedly arranged on the upper end surface of the test box body, the module placing board is obliquely arranged on one end side surface of the test box body, the module placing board is provided with a mounting groove matched with a display module, the bottom of the mounting groove is fixedly provided with two limiting blocks, the limiting blocks are respectively provided with a limiting groove matched with the display module, two ends of the mounting groove are respectively provided with a handle groove, the handle grooves are respectively communicated with the mounting groove, the module test board is also provided with an FPC placing groove, the FPC placing groove is aligned with the mounting groove, one side of the FPC placing groove is fixedly provided with a PCB, a test circuit is arranged in the test box body, and the PCB is electrically connected with the test circuit in the test box body through a circuit, the module testing board is also provided with a pressing device, the pressing device can press the FPC in the FPC placing groove on the PCB, and the bottom of the testing box body is provided with a power supply interface and a USB interface.

Further, compression fittings includes clamp plate, electro-magnet and limiting plate, clamp plate and electro-magnet set up respectively in the both sides of PCB board, the both ends of clamp plate all install through a pivot in the module is surveyed on the board, the clamp plate can the pivot rotates for the center, the electro-magnet passes through test circuit external power supply in the test box body, the limiting plate adopts magnetic material to make, the limiting plate can adsorb in on the electro-magnet.

Furthermore, a damping spring is installed in the middle of the pressing plate, and the damping spring can play a damping role in the rotation of the pressing plate.

Further, the included angle between the module placing plate and the horizontal plane is 30-60 degrees.

The utility model discloses simple structure, convenient to use can accomplish liquid crystal display module's circular telegram test fast, and fixes a position accurately, and the testing result is accurate, has improved detection efficiency greatly. When the tool is used for carrying out power-on test on the liquid crystal display module, the display module can be firstly aligned and placed in the mounting groove on the module placing plate, the bottom of the display module is aligned and embedded in the limiting groove on the limiting block at the bottom of the mounting groove, the limiting groove can play a good positioning role on the display module, after the display module is placed, the FPC connected with the display module is aligned and placed in the FPC placing groove, the golden finger of the FPC is just adhered to the circuit interface of the PCB, then the pressing plate is pressed on the FPC in a rotating mode, then the USB interface at the bottom of the testing box body is externally connected with the testing program on a computer, the power interface is externally connected with a power supply, then the switch of the testing power supply is switched on, the testing circuit is switched on, the electromagnet is also powered on to generate magnetism, then the limiting plate is adsorbed on the electromagnet, and the limiting plate part extends out of the electromagnet to play a limiting role on the pressing plate pressed on the FPC, make on the clamp plate is straight the pressfitting FPC, guarantee the stability of being connected between FPC and the PCB board in the test process, accomplish until the test, break off test circuit's power again, the electro-magnet loses the electricity this moment, is the demagnetization, takes off the limiting plate again, opens the clamp plate, takes out FPC and display module assembly from mounting groove and FPC standing groove simultaneously. The holding grooves on the two sides of the mounting groove can facilitate the display module to be taken in the mounting groove.

Drawings

FIG. 1 is a top view of the device of the present invention;

FIG. 2 is a front view of the device of the present invention;

FIG. 3 is a schematic view of the mounting structure of the LCD module on the device during testing;

in the figure: 1. the testing box body, 2, the board is placed to the module, 3, the module surveys the board, 4, the display module assembly, 5, the mounting groove, 6, the stopper, 7, the spacing groove, 8, the groove of holding, 9, FPC standing groove, 10, the PCB board, 11, compression fittings, 111, clamp plate, 112, electro-magnet, 113, the limiting plate, 114, damping spring, 12, power source, 13, the USB interface.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The liquid crystal display module power-on test fixture as shown in fig. 1-3 comprises a test box body 1, a module placing board 2 and a module test board 3, wherein the module test board 3 is fixedly installed on the upper end surface of the test box body 1, the module placing board 2 is obliquely arranged on one end side surface of the test box body 1, the module placing board 2 is provided with an installation groove 5 matched with a display module 4, the bottom of the installation groove 5 is fixedly provided with two limit blocks 6, the limit blocks 6 are respectively provided with a limit groove 7 matched with the display module 4, both ends of the installation groove 5 are respectively provided with a handle groove 8, the handle grooves 8 are respectively communicated with the installation groove 5, the module test board 3 is also provided with an FPC placing groove 9, the FPC placing groove 9 is aligned with the installation groove 5, one side of the FPC placing groove 9 is fixedly provided with a PCB 10, the testing box body 1 is internally provided with a testing circuit, the PCB 10 is electrically connected with the testing circuit in the testing box body 1 through a circuit, the module testing board 2 is also provided with a pressing device 11, the pressing device 11 can press the FPC in the FPC placing groove 9 on the PCB 10, and the bottom of the testing box body 1 is provided with a power supply interface 12 and a USB interface 13; the pressing device 11 comprises a pressing plate 111, an electromagnet 112 and a limiting plate 113, the pressing plate 111 and the electromagnet 112 are respectively arranged on two sides of the PCB 10, two ends of the pressing plate 111 are both mounted on the module test board 3 through a rotating shaft, the pressing plate 111 can rotate around the rotating shaft, the electromagnet 112 is externally connected with a power supply through a test circuit in the test box body 1, the limiting plate 113 is made of a magnetic material, and the limiting plate 113 can be adsorbed on the electromagnet 112; a damping spring 114 is arranged in the middle of the pressure plate 111, and the damping spring 114 can play a damping role in the rotation of the pressure plate 111; the included angle between the module placing plate 2 and the horizontal plane is 30-60 degrees.

The utility model discloses simple structure, convenient to use can accomplish liquid crystal display module's circular telegram test fast, and fixes a position accurately, and the testing result is accurate, has improved detection efficiency greatly. When the tool is used for carrying out power-on test on the liquid crystal display module, the display module 4 can be firstly aligned and placed in the mounting groove 5 on the module placing plate 2, the bottom of the display module 4 is aligned and embedded in the limiting groove 7 on the limiting block 6 at the bottom of the mounting groove 5, the limiting groove 7 can play a good positioning role on the display module 4, after the display module 4 is placed, the FPC connected with the display module 4 is aligned and placed in the FPC placing groove 9, the golden finger of the FPC is just attached to the circuit interface of the PCB 9, then the pressing plate 111 is rotated and pressed on the FPC, then the USB interface 13 at the bottom of the test box body 1 is externally connected with a test program on a computer, the power interface 12 is externally connected with a power supply, then a switch of the test power supply is opened, the test circuit is switched on, the electromagnet 112 is also powered on to generate magnetism, then the limiting plate 113 is adsorbed on the electromagnet 112, and the part of the limiting plate 113 extends out of the electromagnet 112 to play a limiting role on the pressing plate 111 pressed on the FPC, make on clamp plate 111 always the pressfitting FPC, guarantee the stability of being connected between FPC and the PCB board 10 in the test process, until the test is accomplished, break off test circuit's power again, electro-magnet 112 loses the electricity this moment, is the demagnetization, takes off limiting plate 113 again, opens clamp plate 111, takes out FPC and display module assembly 4 from mounting groove 5 and FPC standing groove 9 simultaneously. The handle grooves 8 on the two sides of the mounting groove 5 can facilitate the display module 4 to be taken in the mounting groove 5. The design of the electromagnet 112 can ensure that the pressing plate 111 is always pressed on the FPC in the electrifying test process, thereby ensuring the stability of connection between the FPC and the PCB 10 in the electrifying test process and improving the accuracy of the test result.

The above-described embodiments are illustrative of the present invention and not restrictive, it being understood that various changes, modifications, substitutions and alterations may be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liquid crystal display module electrifying test fixture comprises a test box body (1), a module placing plate (2) and a module test plate (3), and is characterized in that the module test plate (3) is fixedly arranged on the upper end face of the test box body (1), the module placing plate (2) is obliquely arranged on one end side face of the test box body (1), the module placing plate (2) is provided with a mounting groove (5) matched with a display module (4), the bottom of the mounting groove (5) is fixedly provided with two limiting blocks (6), the limiting blocks (6) are respectively provided with a limiting groove (7) matched with the display module (4), both ends of the mounting groove (5) are respectively provided with a hand holding groove (8), the hand holding grooves (8) are respectively communicated with the mounting groove (5), the module test plate (3) is also provided with an FPC placing groove (9), the FPC mounting groove (9) with mounting groove (5) align, one side fixed mounting of FPC mounting groove (9) has a PCB board (10), be provided with test circuit in the test box body (1), PCB board (10) pass through the test circuit electric connection in circuit and the test box body (1), still be provided with a compression fittings (11) on module test board (3), compression fittings (11) can close the FPC pressfitting in FPC mounting groove (9) on PCB board (10), the bottom of test box body (1) is provided with one power source (12) and one USB interface (13).

2. The liquid crystal display module energization test fixture according to claim 1, wherein the press-fit device (11) includes a press plate (111), an electromagnet (112) and a limit plate (113), the press plate (111) and the electromagnet (112) are respectively disposed on two sides of the PCB board (10), two ends of the press plate (111) are mounted on the module test board (3) through a rotating shaft, the press plate (111) can rotate around the rotating shaft, the electromagnet (112) passes through a test circuit external power supply in the test box body (1), the limit plate (113) is made of a magnetic material, and the limit plate (113) is adsorbable on the electromagnet (112).

3. The power-on test fixture for the liquid crystal display module according to claim 2, wherein a damping spring (114) is installed in the middle of the pressing plate (111), and the damping spring (114) can damp the rotation of the pressing plate (111).

4. The liquid crystal display module energization test fixture according to claim 1, wherein an included angle between the module placing plate (2) and a horizontal plane is 30-60 °.