Adapter plate for double-screen test and test device

Abstract

The utility model provides an adapter plate for double-screen testing and a testing device. An adapter board for double-screen testing comprises a PCB main body, a driving board signal pin, a main test interface, an auxiliary test interface, a first function detection area and a second function detection area. The driving board signal pin, the main test interface, the auxiliary test interface, the first function detection area and the second function detection area are all arranged on the PCB main body; the drive board signal pin, the main test interface, the auxiliary test interface, the first function detection area and the second function detection area are in communication connection, the main test interface and the auxiliary test interface are arranged at the same time, the corresponding function detection areas are arranged, the same test jig can detect two display modules at the same time, the jig cost is saved, and the test efficiency is improved. And meanwhile, the QC detector detects the two display screens at the same time, so that the detection efficiency is improved, the manufacturing cost of the display module is reduced, and the product competitiveness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to an adapter plate and a testing device for double-screen testing. Background Art

[0002] Functional testing is required before display modules are shipped to ensure the quality of shipment. Currently, a test fixture is only equipped with one BTB connector, which means that only one display module can be tested. The detection efficiency is low, and manpower costs and production and development costs of the test fixture are wasted. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a transfer board and a test device for double-screen testing.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] In a first aspect, an embodiment of the utility model provides an adapter board for dual-screen testing, including: a PCB circuit board body, a driver board signal pin, a main test interface, a secondary test interface, a first function detection area, and a second function detection area;

[0006] The driver board signal pins, the main test interface, the auxiliary test interface, the first function detection area and the second function detection area are all arranged on the PCB circuit board body;

[0007] The signal pins of the driving board, the main test interface, the auxiliary test interface, the first function detection area and the second function detection area are communicated and connected.

[0008] As a preferred implementation of the utility model, the PCB circuit board body is a double-layer PCB circuit board, and wiring is arranged on both the front and back sides of the PCB circuit board body.

[0009] As a preferred implementation of the utility model, the driver board signal pins include: an IO port signal line, a MIPI transmission signal line and a reset signal line.

[0010] As a preferred embodiment of the utility model, it also includes a backlight power supply board, which is used to provide constant current drive for the backlight LED of the display module to be tested.

[0011] As a preferred embodiment of the utility model, it also includes a POWER power supply board, which is used to provide positive and negative driving voltages to the liquid crystal of the display module to be tested.

[0012] As a preferred embodiment of the present utility model, the first function detection area includes: a first function detection module, a second function detection module and a third function detection module;

[0013] The first function detection module is connected to the main test interface and is used for detecting LEDPWM, TE and ID functions;

[0014] The second function detection module is connected to the main test interface and is used for detecting the Touch function;

[0015] The third function detection module is connected to the main test interface and is used for detecting the open and short circuit functions.

[0016] As a preferred embodiment of the present utility model, the second functional detection area includes a current detection module;

[0017] The current detection module is used to monitor whether the current and voltage of the display module to be tested on the main test interface and the auxiliary test interface are abnormal.

[0018] As a preferred embodiment of the present utility model, the PCB circuit board body includes an adapter plate positioning hole, and the adapter plate positioning hole is used to fix the adapter plate and the test fixture.

[0019] As a preferred embodiment of the utility model, the PCB circuit board body includes connector fixing holes, and the connector fixing holes are arranged around the main test interface and the auxiliary test interface, and are used to fix the test probes on the adapter board.

[0020] In a second aspect, an embodiment of the utility model further provides a testing device, including: a driver board, a MIPI bridge chip, a flash memory slot, a power interface, and an adapter board for dual-screen testing as in any embodiment of the utility model.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are:

[0022] In the utility model, by simultaneously setting the main test interface and the auxiliary test interface and providing the corresponding functional detection area, the same test fixture can detect two display modules at the same time, saving the fixture cost. At the same time, QC inspectors can detect two display screens at the same time, which improves the detection efficiency, reduces the display module production cost, and improves product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of an adapter board for dual-screen testing provided by the utility model;

[0024] Figure 2 The present invention provides a structural schematic diagram of a testing device. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] First, see Figure 1 The embodiment of the utility model provides a transfer board for dual-screen testing, including: a PCB circuit board body 100, a driver board signal pin 200, a main test interface 300, a secondary test interface 400, a first function detection area 500 and a second function detection area 600;

[0030] The driving board signal pin 200, the main test interface 300, the auxiliary test interface 400, the first function detection area 500 and the second function detection area 600 are all arranged on the PCB circuit board body 100;

[0031] The driving board signal pin 200 , the main test interface 300 , the auxiliary test interface 400 , the first function detection area 500 and the second function detection area 600 are communicatively connected.

[0032] In the utility model, by simultaneously setting the main test interface and the auxiliary test interface and providing the corresponding functional detection area, the same test fixture can detect two display modules at the same time, saving the fixture cost. At the same time, QC inspectors can detect two display screens at the same time, which improves the detection efficiency, reduces the display module production cost, and improves product competitiveness.

[0033] As a preferred embodiment of the present invention, the PCB circuit board body 100 is a double-layer PCB circuit board, and wiring is provided on both the front and back sides of the PCB circuit board body. The structure of the PCB circuit board body is a first copper foil layer, a substrate, and a second copper foil layer stacked in sequence.

[0034] As a preferred implementation of the utility model, the driver board signal pin 200 includes: an IO port signal line, a MIPI transmission signal line and a reset signal line.

[0035] Among them, one end of the above-mentioned IO port signal line, MIPI transmission signal line and reset signal line will be connected to the IO port signal line, MIPI transmission signal line and reset signal line corresponding to the driver board of the test device. Among them, the MIPI transmission signal line, reset signal line and IO port signal line in the embodiment of the utility model will all be connected to the main test interface and the auxiliary test interface.

[0036] As a preferred embodiment of the present invention, please refer to Figure 1 , and also includes a backlight power supply board 700, which is used to provide constant current drive for the backlight LED of the display module to be tested.

[0037] As a preferred embodiment of the present invention, please refer to Figure 1 , and also includes a POWER power supply board 800, which is used to provide positive and negative driving voltages to the liquid crystal of the display module.

[0038] Preferably, see Figure 2 The driving signal pin 200 is also used to drive the backlight power supply board 700 and the POWER power supply board 800.

[0039] As a preferred embodiment of the present invention, please refer to Figure 1 , the first function detection area 500 includes: a first function detection module 510, a second function detection module 520 and a third function detection module 530;

[0040] The first function detection module 510 is connected to the main test interface 300 and is used for detecting LEDPWM, TE and ID functions;

[0041] The second function detection module 520 is connected to the main test interface 300 and is used for detecting the touch function;

[0042] The third function detection module 530 is connected to the main test interface 300 and is used for detecting the open and short circuit functions.

[0043] To prevent signal crosstalk, the first function detection area can only test the display module connected to the main test interface.

[0044] As a preferred embodiment of the present invention, please refer to Figure 1 , the second function detection area 600 includes a current detection module 610;

[0045] The current detection module 610 is used to monitor whether the current and voltage of the display module on the main test interface and the auxiliary test interface are abnormal.

[0046] Among them, the current detection module mainly monitors the POWER output of the display module on the main test interface and the auxiliary test interface, such as: the voltage and current values ​​flowing through the IO port signal line IOVCC, positive voltage AVDD, and negative voltage AVEE, so as to confirm whether the display module is lit normally.

[0047] Preferably, the IO port signal line in the embodiment of the utility model is first connected to the current detection module, and then connected to the main and auxiliary test interfaces by the current detection module, so that the current detection module can monitor the voltage and current flowing through the IO port signal line.

[0048] As a preferred embodiment of the present invention, please refer to Figure 1 The PCB circuit board body 100 includes an adapter plate positioning hole 110, and the adapter plate positioning hole 110 is used to fix the adapter plate and the test fixture.

[0049] Preferably, the number of the adapter plate positioning holes 110 is 3-5, and the hole diameter is 3.4 mm, which is conducive to the tight fixation of the two.

[0050] As a preferred embodiment of the present utility model, the PCB circuit board body 100 includes a connector fixing hole 120, and the connector fixing hole 120 is arranged around the main test interface 300 and the auxiliary test interface 400, and is used to fix the test probe on the adapter board.

[0051] Preferably, six connector fixing holes 120 are evenly arranged around the main test interface 300 and the auxiliary test interface 400, and the hole diameter thereof is 1.8 mm, which is conducive to the tight fixation of the two.

[0052] Second, see Figure 2The embodiment of the utility model further provides a testing device, including: a driving board 10, a MIPI bridge chip 20, a flash memory slot 30, a power interface 40, and an adapter board 50 for dual-screen testing as in any embodiment of the utility model.

[0053] The beneficial effects achieved by the testing device provided by the utility model refer to the beneficial effects in any embodiment of the utility model.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A transfer board for dual-screen testing, characterized in that: include: PCB circuit board body, driver board signal pins, main test interface, auxiliary test interface, first function detection area and second function detection area; The driving board signal pin, the main test interface, the auxiliary test interface, the first function detection area and the second function detection area are all arranged on the PCB circuit board body; The signal pins of the driving board, the main test interface, the auxiliary test interface, the first function detection area and the second function detection area are communicatively connected.

2. The adapter board for dual-screen testing according to claim 1, characterized in that: The PCB circuit board body is a double-layer PCB circuit board, and wiring is provided on both the front and back sides of the PCB circuit board body.

3. The adapter board for dual-screen testing according to claim 1, characterized in that: The driver board signal pins include: an IO port signal line, a MIPI transmission signal line and a reset signal line.

4. The adapter board for dual-screen testing according to claim 1, characterized in that: It also includes a backlight power supply board, which is used to provide constant current drive for the backlight LED of the display module to be tested.

5. The adapter board for dual-screen testing according to claim 1, characterized in that: It also includes a POWER power supply board, which is used to provide positive and negative driving voltages to the liquid crystal of the display module to be tested.

6. The adapter board for dual-screen testing according to claim 1, characterized in that: The first function detection area includes: a first function detection module, a second function detection module and a third function detection module; The first function detection module is connected to the main test interface and is used for detecting LEDPWM, TE and ID functions; The second function detection module is connected to the main test interface and is used for detecting the Touch function; The third function detection module is connected to the main test interface and is used for detecting the open and short circuit functions.

7. The adapter board for dual-screen testing according to claim 1, characterized in that: The second functional detection area includes a current detection module; The current detection module is used to monitor whether the current and voltage of the display module to be tested on the main test interface and the auxiliary test interface are abnormal.

8. The adapter board for dual-screen testing according to claim 1, characterized in that: The PCB circuit board body comprises an adapter plate positioning hole, and the adapter plate positioning hole is used to fix the adapter plate and the test fixture.

9. The adapter board for dual-screen testing according to claim 1, characterized in that: The PCB circuit board body includes connector fixing holes, which are arranged around the main test interface and the auxiliary test interface and are used to fix the test probes on the adapter board.

10. A testing device, characterized in that: include: A driver board, a MIPI bridge chip, a flash memory slot, a power interface, and an adapter board for dual-screen testing as described in any one of claims 1-9.

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