A detection device for display module

Abstract

The application belongs to the field of QC electrical measurement, and relates to a detection device for a display module. The technical scheme provided by the application can set a detection module for detecting the function of the display module and a probe plate module in a jig box, place the display module in a detection placement area, and enable the movable part of the main screen FPC connector to be buckled on the probe body for QC electrical measurement after the main screen FPC connector is positioned and attached, so that the product test cost is reduced without the need to additionally increase the lengthened FPC and operation post.

Description

Technical Field

[0001] This application relates to the field of QC electrical testing technology, and more specifically, to a testing device for display modules. Background Technology

[0002] In current smartphone designs, to meet specific regional design specifications, the flexible printed circuit board (FPC) of the main screen cannot pass through the battery. Therefore, the length of the main screen FPC connector must be kept short to avoid it passing through the battery area, which limits the length of the active portion of the main screen FPC connector. To solve this problem, the back of the main screen FPC connector needs to be attached to the backlight frame (e.g., using conductive double-sided adhesive) before the display module is shipped. Fig. 1-2 This can lead to a reduction in the length of the extended portion of the main screen FPC connector, which may result in misalignment of the connector or tearing of the FPC during the module's quality control (QC) electrical testing process.

[0003] The existing solution is to add an adapter FPC to extend the protruding part of the main screen FPC, but this increases material costs and requires additional personnel to perform the adapter operation, increasing labor costs. Utility Model Content

[0004] The technical problem to be solved by the embodiments of this application is that it does not require additional extension of the FPC and operating positions, thereby reducing product testing costs.

[0005] To address the aforementioned technical problems, this application provides a detection device for display modules, employing the following technical solution:

[0006] The display module includes a main screen FPC connector and an FPC body;

[0007] Includes fixture box, testing module and probe plate module;

[0008] The fixture box has a test placement area on its inner bottom surface, the detection module is located inside the fixture box, and the probe plate module is located on the inner bottom surface of the fixture box.

[0009] The probe board module includes a probe board body and a probe assembly. The probe board body is disposed on the bottom surface inside the fixture box and is flush with the edge of the test placement area. The probe assembly includes a probe body disposed on the probe board body. The distance from the center of the probe body to the edge of the probe board body is less than the distance from the center of the main screen FPC connector to the movable edge of the FPC body.

[0010] Furthermore, the probe plate module also includes a probe indenter, which is movably connected to the side of the probe plate body.

[0011] Furthermore, the probe assembly also includes a ZIF connector, which is disposed on the back side of the probe plate body and on the end away from the probe body.

[0012] Furthermore, the detection module includes a driver PCB board and a power line disposed inside the fixture box. The driver PCB board is connected to the power line. The driver PCB board is provided with a MIPI bridge module, a power conversion module, a backlight power supply module, a Flash memory module and a ZIF interface.

[0013] Furthermore, the side of the driving PCB board is provided with a selection button area, the top of the driving PCB board is provided with a power interface, one end of the power cable is connected to the power interface, and the selection button area is provided with a page down button, a detection button, a page up button and a reset button.

[0014] Furthermore, the probe plate body is provided with a plurality of probe plate positioning holes, which are arranged around the ZIF connector.

[0015] Furthermore, the probe plate body is provided with a plurality of probe positioning holes, which are arranged around the probe body.

[0016] Furthermore, the distance from the center of the main screen FPC connector to the movable edge of the FPC body is greater than the distance from the center of the probe to the edge of the probe board body plus 0.8mm.

[0017] Furthermore, the diameter of the probe plate positioning hole is 3.0 mm, and the diameter of the probe positioning hole is 2.0 mm.

[0018] Furthermore, the external dimensions of the area to be tested are 0.2 mm larger than one side of the display module.

[0019] Compared with the prior art, the embodiments of this application have the following main advantages:

[0020] By setting up a testing module and a probe board module for testing the display module's functions inside the fixture box, the display module is placed in the test area. After the main screen FPC connector of the display module is aligned and attached, the movable part of the main screen FPC connector can be snapped onto the probe body for QC electrical testing. This eliminates the need to add an extension FPC and an operating position, reducing product testing costs. Attached Figure Description

[0021] To more clearly illustrate the solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Fig. 1 This is a schematic diagram of the existing technology;

[0023] Fig. 2 This is a schematic diagram of the existing technology;

[0024] Fig. 3 This is a schematic diagram of the structure of the detection device for display modules according to the present invention;

[0025] Fig. 4 for Fig. 3 Side view;

[0026] Fig. 5 for Fig. 3 A magnified view of a portion of the image;

[0027] Fig. 6 for Fig. 4 BB is a cross-sectional view.

[0028] Figure label:

[0029] Main screen FPC connector 100, FPC body 110;

[0030] Fixture box 200, test area 210;

[0031] Detection module 300, driver PCB board 310, MIPI bridge module 311, power conversion module 312, backlight power supply module 313, Flash memory module 314, ZIF interface 315, selection button area 316, power interface 317, power cable 320;

[0032] Probe board module 400, probe board body 410, probe board positioning hole 411, probe positioning hole 412, probe assembly 420, probe body 421, ZIF connector 422, probe pressure head 430.

[0033] Page down button 500, detection button 510, page up button 520, reset button 530;

[0034] Display module 600. Detailed Implementation

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] This application provides a detection device for display modules.

[0038] like Fig. 3-6 As shown, the display module 600 includes a main screen FPC connector 100 and an FPC body 110, characterized in that it includes:

[0039] Fixture box 200, detection module 300 and probe plate module 400;

[0040] The fixture box 200 has a test placement area 210 on its inner bottom surface, the detection module 300 is disposed inside the fixture box 200, and the probe plate module 400 is disposed on the inner bottom surface of the fixture box 200.

[0041] The probe board module 400 includes a probe board body 410 and a probe assembly 420. The probe board body 410 is disposed on the bottom surface inside the fixture box 200 and is flush with the edge of the test placement area 210. The probe assembly 420 includes a probe body 421 disposed on the probe board body 410. The distance from the center of the probe body 421 to the edge of the probe board body 410 is less than the distance from the center of the main screen FPC connector 100 to the movable edge of the FPC body 110.

[0042] By setting a testing module 300 and a probe board module 400 for testing the function of the display module 600 in the fixture box 200, the display module 600 is placed in the test placement area 210. After the main screen FPC connector 100 of the display module 600 is aligned and attached, the movable part of the main screen FPC connector 100 can be snapped onto the probe body 421 for QC electrical testing. There is no need to add an extension FPC and an operating position, thus reducing the product testing cost.

[0043] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0044] Embodiment 1 of the detection device for display modules in this application

[0045] like Fig. 3-6 As shown, the detection device for display modules in this application includes: a fixture box 200, a detection module 300, and a probe plate module 400;

[0046] The fixture box 200 has a test placement area 210 on its inner bottom surface, the detection module 300 is disposed inside the fixture box 200, and the probe plate module 400 is disposed on the inner bottom surface of the fixture box 200.

[0047] The probe board module 400 includes a probe board body 410 and a probe assembly 420. The probe board body 410 is disposed on the bottom surface inside the fixture box 200 and is flush with the edge of the test placement area 210. The probe assembly 420 includes a probe body 421 disposed on the probe board body 410. The distance from the center of the probe body 421 to the edge of the probe board body 410 is less than the distance from the center of the main screen FPC connector 100 to the movable edge of the FPC body 110.

[0048] Through the above structural design, the fixture box 200, made of bakelite (anti-static), is the placement area for the display module 600 to be tested. Its dimensions are slightly larger than the display module 600 by 0.2mm on each side to facilitate placement. The testing module 300 is built into the fixture box 200 and is used for functional control via buttons in the selection button area 316. The probe body 421 in the probe board module 400 is used to contact and test the main screen FPC connector 100 in the display module 600, thereby performing QC testing. Since the distance from the center of the probe to the edge of the probe board body 410 is less than that of the main screen FPC connector 100, the testing module 300 performs QC testing. The distance from the center of the C connector 100 to the movable side of the FPC body 110 is such that the main screen FPC connector 100 can be directly connected to the probe body 421. By setting a detection module 300 and a probe board module 400 for detecting the function of the display module 600 in the fixture box 200, the display module 600 is placed in the test placement area 210. After the main screen FPC connector 100 of the display module 600 is aligned and attached, the movable part of the main screen FPC connector 100 can be snapped onto the probe body 421 for QC electrical testing. There is no need to add an extension FPC or an operating position, thus reducing product testing costs.

[0049] like Fig. 5 As shown, specifically, the probe plate module 400 also includes a probe indenter 430, which is movably connected to the side of the probe plate body 410.

[0050] Through the above structural design, the bottom of the probe head 430 is made of rubber, which helps to protect the probe assembly 420.

[0051] like Fig. 5 As shown, specifically, the probe assembly 420 further includes a ZIF connector 422, which is disposed on the back side of the probe plate body 410 and on the end away from the probe body 421.

[0052] The above structural design is used for connection with the FPC adapter of the display module 600.

[0053] like Fig. 6 As shown, specifically, the detection module 300 includes a driver PCB board 310 and a power line 320 disposed inside the fixture box 200. The driver PCB board is connected to the power line 320. The driver PCB board 310 is provided with a MIPI bridge module 311, a power conversion module 312, a backlight power supply module 313, a Flash memory module 314 and a ZIF interface 315.

[0054] Through the above structural design, the drive PCB board 310 supplies power and transmits signals to the test display module 600. An adapter FPC is connected to the ZIF interface 315. The adapter FPC is 20-40cm long, with double-layer flexible circuit board traces and pin-to-pin electrical connections. The other end of the adapter FPC is connected to the probe board body 410 interface at the front of the fixture box 200. The test fixture has two ZIF interfaces 315, namely interface A and interface B, which can be flexibly switched; if one is damaged, the other can be replaced.

[0055] like Fig. 3-6 As shown, specifically, the side of the driving PCB board 310 is also provided with a selection button area 316, the top of the driving PCB board 310 is provided with a power interface 317, one end of the power cable 320 is connected to the power interface 317, and the selection button area 316 is provided with a page down button 500, a detection button 510, a page up button 520 and a reset button 530.

[0056] With the above structural design, the function of the device can be controlled by the down page button 500, the detection button 510, the up page button 520 and the reset button 530.

[0057] Embodiment 2 of the detection device for display modules in this application

[0058] like Fig. 3-6 As shown, the detection device for display modules in this application further includes: the probe plate body 410 is provided with a plurality of probe plate positioning holes 411, and the plurality of probe plate positioning holes 411 are arranged around the ZIF connector 422.

[0059] Through the above structural design, the probe plate body 410 is provided with 3-4 probe plate positioning holes 411 with a hole diameter of 3.0mm, which are used to fix the probe plate body 410 onto the jig box 200.

[0060] Embodiment 3 of the detection device for display modules in this application

[0061] like Fig. 3-6 As shown, specifically, the probe plate body 410 is provided with a plurality of probe positioning holes 412, and the plurality of probe positioning holes 412 are arranged around the probe body 421.

[0062] With the above structural design, the probe plate body 410 is provided with 6 probe positioning holes 412, with a hole diameter of 2.0 mm, for fixing the probe assembly 420 onto the probe plate body 410.

[0063] Specifically, the distance from the center of the main screen FPC connector 100 to the movable edge of the FPC body 110 is greater than the distance from the center of the probe to the edge of the probe plate body 410 plus 0.8mm.

[0064] With the above structural design, after the main screen FPC of the display module 600 is aligned and attached, the movable part of the connector can be fastened to the probe fixture for QC electrical testing.

[0065] Specifically, the probe plate positioning hole 411 has a diameter of 3.0 mm, and the probe positioning hole 412 has a diameter of 2.0 mm.

[0066] Specifically, the external dimensions of the test placement area 210 are 0.2 mm larger than the single side of the display module 600.

[0067] Through the above structural design, the overall size is slightly larger than the display module 600 by 0.2mm on each side, which facilitates the placement of the display module 600.

[0068] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0069] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A detection device for a display module, the display module (600) comprising a main screen FPC connector (100) and an FPC body (110), characterized in that, include: Fixture box (200), detection module (300) and probe plate module (400); The fixture box (200) has a test placement area (210) on its inner bottom surface, the detection module (300) is located inside the fixture box (200), and the probe plate module (400) is located on the inner bottom surface of the fixture box (200). The probe board module (400) includes a probe board body (410) and a probe assembly (420). The probe board body (410) is disposed on the bottom surface inside the fixture box (200) and is flush with the edge of the test placement area (210). The probe assembly (420) includes a probe body (421) disposed on the probe board body (410). The distance from the center of the probe body (421) to the edge of the probe board body (410) is less than the distance from the center of the main screen FPC connector (100) to the movable side of the FPC body (110).

2. The detection device for a display module according to claim 1, characterized in that, The probe plate module (400) also includes a probe indenter (430), which is movably connected to the side of the probe plate body (410).

3. The detection device for a display module according to claim 2, characterized in that, The probe assembly (420) also includes a ZIF connector (422), which is disposed on the back of the probe plate body (410) and on one end away from the probe body (421).

4. The detection device for a display module according to any one of claims 1-3, characterized in that, The detection module (300) includes a driving PCB board (310) and a power line (320) disposed in the fixture box (200). The driving PCB board is connected to the power line (320). The driving PCB board (310) is provided with a MIPI bridge module (311), a power conversion module (312), a backlight power supply module (313), a Flash memory module (314), and a ZIF interface (315).

5. The detection device for a display module according to claim 4, characterized in that, The drive PCB board (310) is also provided with a selection button area (316) on its side. The top of the drive PCB board (310) is provided with a power interface (317). One end of the power line (320) is connected to the power interface (317). The selection button area (316) is provided with a page down button (500), a detection button (510), a page up button (520), and a reset button (530).

6. The detection device for a display module according to claim 1, characterized in that, The probe plate body (410) is provided with a plurality of probe plate positioning holes (411), which are arranged around the ZIF connector (422).

7. The detection device for a display module according to claim 6, characterized in that, The probe plate body (410) is provided with a plurality of probe positioning holes (412), which are arranged around the probe body (421).

8. The detection device for a display module according to claim 1, characterized in that, The distance from the center of the main screen FPC connector (100) to the movable side of the FPC body (110) is greater than the distance from the center of the probe to the edge of the probe plate body (410) plus 0.8mm.

9. The detection device for a display module according to claim 7, characterized in that, The probe plate positioning hole (411) has a diameter of 3.0 mm, and the probe positioning hole (412) has a diameter of 2.0 mm.

10. The detection device for a display module according to claim 4, characterized in that, The external dimensions of the test placement area (210) are 0.2 mm larger than the single side of the display module (600).

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