A test fixture
By designing a test fixture including a press plate and a placement table, the problem that the display panel cannot be accurately aligned during the test process in the prior art is solved, efficient and accurate test results are achieved, and display panels of different sizes are adapted.
Patent Information
- Application Number
- CN202421548532.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-07-02
AI Technical Summary
The existing test board exists independently from the connecting board, resulting in the display panel being unable to accurately align during the test, the test results are inaccurate, inefficient, and lack of size-compatible fixtures.
A test fixture is designed, including a press plate and a placement table. The press plate is equipped with a sliding groove, an observation part and a testing part. The testing part is composed of a testing plate and a connecting plate, and is slidably connected to the press plate through the sliding groove to adapt to display panels of different sizes.
It realizes accurate alignment of the display panel, improves the accuracy and efficiency of test results, can adapt to display panels of different specifications, and reduces the production and maintenance costs of fixtures.
Smart Images
Figure CN222733812U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic device auxiliary testing process, in particular to a testing fixture. Background Art
[0002] During the production process of display panels (panels, such as OLED and LCD), multiple inspection procedures are required. One of the important inspection procedures is to test the cut panels (Cell Test) to confirm whether the panels have defects.
[0003] The existing test board and connecting board are two independent ones. Without the aid of a fixture, during the test, the display panel to be tested needs to be fully aligned with the test board and the connecting board. The staff cannot accurately align them, the test results cannot be guaranteed to be accurate, and the test efficiency is low. At the same time, the display panels vary in size, and there is currently no fixture with compatible sizes. Utility Model Content
[0004] In view of the above situation, it is necessary to provide a test fixture to solve the problems of low efficiency and incompatible size of the fixture in the prior art in detecting display panels.
[0005] A test fixture for testing a display panel to be tested, the test fixture comprising a pressing plate and a placing table, the pressing plate and the placing table being hinged, the pressing plate being provided with a slide groove, an observation portion and a detection portion, the observation portion being provided above the detection portion, the observation portion being provided with an upper polarizer, the detection portion comprising two oppositely arranged test plates and two oppositely arranged first connecting plates, the test plate being fixedly arranged on the top surface of the pressing plate, the test plate being provided with a plurality of first output pins, the first connecting plate being provided on the bottom surface of the pressing plate, the slide groove being provided adjacent to the first connecting plate, the first connecting plate being slidably connected to the pressing plate through the slide groove, the first connecting plate being provided with a plurality of first probe pins, and a plurality of The first probe pin is arranged perpendicular to the first connecting board and extends toward the test board. A plurality of the first output pins are adapted to a plurality of the first probe pins. The pins of the display panel to be tested are arranged between the test board and the first connecting board. The first probe pins are used to squeeze the pins of the display panel to be tested so that the pins of the display panel to be tested are electrically connected to the first output pins. The placement table is provided with a placement groove, which is used to place the display panel to be tested. A lower polarizer is disassembled and connected in the placement groove, and the lower polarizer is attached to the bottom of the display panel to be tested. The upper polarizer and the lower polarizer are used to detect the imaging of the display panel to be tested.
[0006] The utility model opens a pressing plate, first places a lower polarizer in a placing groove, the size of the lower polarizer is the same as the size of a display panel to be tested, and uses a suction ball to place the display panel to be tested on the lower polarizer, the placing groove can place display panels to be tested of different specifications, the pins of the display panel to be tested face the detection part, the display panel to be tested is extended between the test board and the first connection board through the cooperation of the test board and the first connection board, a plurality of first probe pins are pressed against the back of the pins of the display panel to be tested, so that the pins of the display panel to be tested are in contact with the first output pins, the test board and the first connection board are fastened by screws, the pressing plate is covered, the power switch is turned on, the pressing plate and the placing table are locked by the anti-heat plug-in key, the test switch is started to start the test, and then the display panel to be tested is imaged by the upper polarizer and the lower polarizer, and the display panel to be tested is detected. After the detection is completed, the test switch and the power switch are turned off in sequence, the anti-heat plug-in key is released, and the display panel to be tested is moved to the corresponding area by using a suction ball.
[0007] Furthermore, the test board is also provided with a plurality of second output pins, and the plurality of second output pins are arranged on the opposite side of the plurality of first output pins, gaps are formed between the plurality of first output pins and the plurality of second output pins, and the gaps between adjacent first output pins are different from the gaps between adjacent second output pins.
[0008] Furthermore, the detection unit also includes two oppositely arranged second connecting plates, the second connecting plates are fixed to the bottom surface of the pressure plate, the second connecting plates are slidably connected to the pressure plate through the slide groove, a number of second probe pins are provided on the second connecting plates, a number of second probe pins are arranged perpendicular to the second connecting plates, and a number of second probe pins are adapted to a number of second output pins.
[0009] Furthermore, the placement groove matches the size of the display panel to be tested, the placement groove is stepped, and the size of the top of the placement groove is larger than the size of the bottom of the placement groove.
[0010] Furthermore, the size of the upper polarizer is larger than the size of the display panel to be tested, and the size of the lower polarizer is equal to the size of the display panel to be tested.
[0011] Furthermore, a power switch, a test switch and an anti-hot-plug key are respectively provided on one side of the placement table. The power switch is electrically connected to the test switch, the test board and the anti-hot-plug key respectively. The anti-hot-plug key is used to lock the pressure plate and the placement table after the pressure plate and the placement table are covered.
[0012] Furthermore, limit blocks are provided at both ends of the slide groove.
[0013] Furthermore, the pressing plate and the placing table are both made of bakelite.
[0014] Furthermore, the first connecting plate and the second connecting plate are both made of transparent material. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the closing state of the pressing plate of the first embodiment of the utility model;
[0016] Figure 2 This is a schematic diagram of the unfolded state of the pressure plate of the first embodiment of the utility model;
[0017] Figure 3 It is a side view of the first embodiment of the utility model;
[0018] Figure 4 A schematic diagram of a test board according to a first embodiment of the utility model;
[0019] Figure 5 It is a front view of the first connecting plate of the first embodiment of the utility model;
[0020] Figure 6 A bottom view of the first connecting plate of the first embodiment of the utility model;
[0021] Figure 7 This is a schematic diagram of the expanded state of the pressure plate of the second embodiment of the utility model;
[0022] Figure 8 A schematic diagram of a test board according to a second embodiment of the present utility model;
[0023] Fig. 9 This is a schematic diagram of a second connecting plate of a second embodiment of the utility model;
[0024] Fig.10 This is the display panel to be tested of the utility model.
[0025] Figure numerals: 1. pressure plate; 100. slide groove; 101. limit block; 110. observation part; 111. upper polarizer; 120. detection part; 121. test board; 122. first output pin; 123. second output pin; 131. first connecting board; 132. first probe pin; 133. second connecting board; 134. second probe pin; 2. placement table; 21. placement groove; 22. lower polarizer; 23. power switch; 24. test switch; 25. anti-hot plug key; 3. display panel to be tested; 31. pin. DETAILED DESCRIPTION
[0026] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings provide embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing this embodiment is to make the disclosure of the present invention more thorough and comprehensive.
[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items. In addition, the various embodiments of the present invention, the features in the embodiments, and the features of the embodiments can be freely combined without obvious conflicts or contradictions.
[0029] Embodiment 1
[0030] A test fixture, such as Figures 1 to 6 as well as Fig.10 As shown, it is used to test the display panel 3 to be tested, including a pressing plate 1 and a placing table 2, the pressing plate 1 and the placing table 2 are hinged, and the material of the pressing plate 1 and the placing table 2 are both bakelite.
[0031] Specifically, the pressing plate is provided with a slide groove 100 , an observation portion 110 and a detection portion 120 , the observation portion 110 is arranged above the detection portion 120 , both ends of the slide groove 100 are provided with limit blocks 101 , and the observation portion 110 is provided with an upper polarizer 111 .
[0032] Specifically, the detection unit 120 includes two oppositely arranged test boards 121 and two oppositely arranged first connecting boards 131, the test boards 121 are fixed on the top surface of the pressing plate 1, the test boards 121 are provided with at least a plurality of first output pins 122, the first connecting boards 131 are fixed on the bottom surface of the pressing plate 1, the slide groove 100 is arranged adjacent to the first connecting boards 131, the first connecting boards 131 are slidably connected to the pressing plate 1 through the slide groove 100, the first connecting boards 131 are made of transparent material, and the first connecting boards 131 are provided with There are multiple first probe pins 132, which are arranged perpendicular to the first connecting board 131 and extend toward the test board 121, and multiple first output pins 122 are adapted to multiple first probe pins 132. The pins 31 of the display panel 3 to be tested are arranged between the test board 121 and the first connecting board 131. The multiple first probe pins 132 squeeze the back side of the pins 31 of the display panel 3 to be tested so that the pins 31 of the display panel 3 to be tested are electrically connected to the first output pins 122.
[0033] Specifically, the placement table 2 is provided with a placement groove 21, and the placement groove 21 is used to place the display panel 3 to be tested. The placement groove 21 is provided with a lower polarizer 22, and the placement groove 21 matches the size of the display panel 3 to be tested. The placement groove 21 is stepped, and the size of the top of the placement groove 21 is larger than the size of the bottom of the placement groove 21. The upper polarizer 111 and the lower polarizer 22 are used to detect the imaging of the display panel 3 to be tested. The size of the upper polarizer 111 is larger than the size of the display panel 3 to be tested, and the size of the lower polarizer 22 is equal to the size of the display panel 3 to be tested.
[0034] Specifically, a power switch 23, a test switch 24 and an anti-hot-plug key 25 are respectively provided on one side of the placement table 2. The power switch 23 is electrically connected to the test switch 24, the test board 121 and the anti-hot-plug key 25 respectively. The anti-hot-plug key 25 is used to lock the pressing plate 1 and the placement table 2 after the pressing plate 1 is covered with the placement table 2.
[0035] According to the utility model, the pressing plate 1 is opened, and the lower polarizer 22 is first placed in the placement groove 21. The size of the lower polarizer 22 is the same as the size of the display panel 3 to be tested. The display panel 3 to be tested is placed on the lower polarizer 22 using a suction ball. The placement groove 21 can place the display panels 3 to be tested of different specifications. The pins 31 of the display panel 3 to be tested face the detection unit 120. The display panel 3 to be tested is extended between the test board 121 and the first connecting board 131 through the cooperation of the test board 121 and the first connecting board 131. The plurality of first probe pins 132 are pressed against the back of the pins 31 of the display panel 3 to be tested, so that the display panel 3 to be tested The pin 31 is in contact with the first output pin 122, the test board 121 and the first connecting plate 131 are fastened by screws, the pressing plate 1 is covered, the power switch 23 is turned on, the pressing plate 1 and the placement table 2 are locked by the anti-hot plug-in key 25, the test switch 24 is started to start the test, and then the display panel 3 to be tested is imaged by the upper polarizer 111 and the lower polarizer 22, and the display panel 3 to be tested is tested. After the test is completed, the test switch 24 and the power switch 23 are turned off in turn, the anti-hot plug-in key 25 is released, the pressing plate 1 is opened, and the display panel 3 to be tested is moved to the corresponding area using a suction ball.
[0036] If you continue to test the display panel 3 of the same size, directly place the display panel 3 on the lower polarizer 22 through the suction ball. If the tested display panel 3 is different from the previous one, you need to replace the lower polarizer 22 first, and always keep the size of the lower polarizer 22 consistent with the size of the display panel 3 to be tested.
[0037] Embodiment 2
[0038] The difference from the first embodiment is that:
[0039] Specifically, Figures 7 to 9 As shown, the test board 121 is also provided with a plurality of second output pins 123, and the plurality of second output pins 123 are arranged on one side of the plurality of first output pins 122, and gaps are formed between the plurality of first output pins 122 and the plurality of second output pins 123, and the pin gaps between adjacent first output pins 122 are different from the pin gaps between adjacent second output pins 123.
[0040] Specifically, the detection unit 120 also includes two oppositely arranged second connecting plates 133, the second connecting plates 133 are fixedly arranged on the bottom surface of the pressure plate 1, the second connecting plates 133 are made of transparent material, the second connecting plates 133 are slidably connected to the pressure plate 1 through the slide groove 100, and a plurality of second probe pins 134 are provided on the second connecting plates 133, and the plurality of second probe pins 134 are arranged perpendicular to the second connecting plates 133, and the number and spacing of the plurality of second probe pins 134 are adapted to the plurality of second output pins 123.
[0041] The specific operation process of testing the display panel to be tested may be performed with reference to the first embodiment.
[0042] It is understandable that output pins with different spacings can be added to the test board, and correspondingly multiple connecting plates can be added to the pressure plate to meet the needs of pins 31 of the display panels 3 to be tested of different sizes, thereby detecting the display panels 3 to be tested of different sizes.
[0043] The utility model fully aligns the pins 31 of the display panel 3 to be tested with the multiple first output pins 122 or the multiple second output pins 123 for testing, thereby improving the detection efficiency. At the same time, there is no need to plug and unplug, thereby reducing the damage rate of the pins 31 of the display panel 3 to be tested due to testing. In addition, the fixture can also accommodate display panels 3 to be tested of different sizes for testing, saving the production cost and maintenance cost of the fixture.
[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0045] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A test fixture for testing a display panel to be tested, characterized in that: The test fixture includes a pressing plate and a placing table, the pressing plate and the placing table are hinged, the pressing plate is provided with a slide groove, an observation part and a detection part, the observation part is arranged above the detection part, the observation part is provided with an upper polarizer, the detection part includes two oppositely arranged test plates and two oppositely arranged first connecting plates, the test plate is fixed to the top surface of the pressing plate, the test plate is provided with a plurality of first output pins, the first connecting plate is arranged on the bottom surface of the pressing plate, the slide groove is arranged adjacent to the first connecting plate, the first connecting plate is slidably connected to the pressing plate through the slide groove, a plurality of first probe pins are provided on the first connecting plate, and the plurality of first probe pins are vertically The first connecting board is arranged on the first connecting board and extends toward the test board. A plurality of the first output pins are adapted to a plurality of the first probe pins. The pins of the display panel to be tested are arranged between the test board and the first connecting board. The first probe pins are used to squeeze the pins of the display panel to be tested so that the pins of the display panel to be tested are electrically connected to the first output pins. The placement table is provided with a placement groove, and the placement groove is used to place the display panel to be tested. A lower polarizer is disassembled and connected in the placement groove, and the lower polarizer is attached to the bottom of the display panel to be tested. The upper polarizer and the lower polarizer are used to detect the imaging of the display panel to be tested.
2. The test fixture according to claim 1, characterized in that: The test board is also provided with a plurality of second output pins, which are arranged on the opposite side of the plurality of first output pins, and gaps are formed between the plurality of first output pins and the plurality of second output pins, and the gaps between adjacent first output pins are different from the gaps between adjacent second output pins.
3. The test fixture according to claim 2, characterized in that: The detection part also includes two second connecting plates arranged opposite to each other, the second connecting plates are fixedly arranged on the bottom surface of the pressing plate, the second connecting plates are slidably connected to the pressing plate through the sliding groove, a plurality of second probe pins are arranged on the second connecting plates, the plurality of second probe pins are arranged perpendicular to the second connecting plates, and the plurality of second probe pins are adapted to the plurality of second output pins.
4. The test fixture according to claim 1, characterized in that: The placement groove matches the size of the display panel to be tested, the placement groove is stepped, and the size of the top of the placement groove is greater than the size of the bottom of the placement groove.
5. The test fixture according to claim 4, characterized in that: The size of the upper polarizer is larger than the size of the display panel to be tested, and the size of the lower polarizer is equal to the size of the display panel to be tested.
6. The test fixture according to claim 1, characterized in that: A power switch, a test switch and an anti-hot-plug key are respectively provided on one side of the placement table. The power switch is electrically connected to the test switch, the test board and the anti-hot-plug key respectively. The anti-hot-plug key is used to lock the pressing plate and the placement table after the pressing plate and the placement table are covered.
7. The test fixture according to claim 1, characterized in that: Limit blocks are arranged at both ends of the slideway.
8. The test fixture according to claim 1, characterized in that: The material of the pressing plate and the placing table are both bakelite.
9. The test fixture according to claim 3, characterized in that: The first connecting plate and the second connecting plate are both made of transparent material.