A liquid crystal module detection fixture

Abstract

The utility model provides a liquid crystal module detection fixture, including a plate body, the plate body is provided with a placement groove, the placement groove is used to place the liquid crystal module, the plate body is provided with a plurality of driving mechanisms on a side facing the liquid crystal module, the driving mechanism includes a connecting arm connected to the plate body, the connecting arm is provided with a fixing hole, a connecting column is moved in the fixing hole, a limiter is provided on the connecting arm to fix the column in the fixing hole, the connecting arm is used to drive the fixed column to move in the vertical direction, the column is connected to one end of the plate body with a pressing block, and the pressing block is provided with a flexible part at one end of the plate body. By providing the pressing block and the flexible part, in cooperation with the driving mechanism, after the periphery of the liquid crystal module is pressed, after uploading a white picture on the test machine, the naked eye can distinguish whether the white picture is uniform and whether it is yellow.

Description

Technical Field

[0001] The utility model relates to the field of display technology, in particular to a liquid crystal module detection fixture. Background Art

[0002] During the production process of LCD screens, the LCD modules may turn yellow. The reasons for the yellowing include yellowing of the backlight and partial yellowing of the LCD.

[0003] Among them, the reason for the yellowing of the backlight is the aging of the backlight. In the prior art, batch aging detection can be performed for the aging of the backlight; the reason for the partial yellowing of the LCD is the uneven color of the LCD liquid crystal itself, which often occurs in the peripheral area of ​​the LCD. LCD modules that turn yellow due to any reason are defective products and need to be detected and intercepted in time before shipment to prevent defective products from flowing out.

[0004] The existing LCD color unevenness can be detected by testing instruments, and the color uniformity of the LCD module can be tested in the laboratory to see if it is within the normal value range. However, laboratory testing is expensive and cannot be performed in batches. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a liquid crystal module detection fixture, aiming to solve the problem that the yellowing phenomenon of liquid crystal modules in the prior art is difficult to detect in batches and is costly.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A liquid crystal module detection fixture comprises a plate body, the plate body is provided with a placement groove, the placement groove is used to place the liquid crystal module, the plate body is provided with a plurality of driving mechanisms on a side facing the liquid crystal module, the driving mechanism comprises a connecting arm connected to the plate body, the connecting arm is provided with a fixing hole, a connecting column is moved in the fixing hole, a limiter is provided on the connecting arm to fix the column in the fixing hole, the connecting arm is used to drive the fixed column to move in a vertical direction, the column is connected to a pressure block toward one end of the plate body, and the pressure block is provided with a flexible portion toward one end of the plate body.

[0008] Compared with the prior art, the beneficial effect of the utility model lies in that: by setting the pressing block and the flexible part, and cooperating with the driving mechanism, the operator can control the pressing of the column through the driving mechanism, thereby driving the pressing block to be pressed down, and the flexible part between the pressing block and the liquid crystal module can protect the surface of the liquid crystal module while transmitting pressure to prevent damage. After the periphery of the liquid crystal module is pressed, the factory display test machine sends a white yellow surface to the liquid crystal module. At this time, it can be distinguished by the naked eye whether the white screen is uniform and whether it is yellowing. The liquid crystal module detection fixture has low manufacturing cost and low detection cost, and is suitable for batch detection.

[0009] Furthermore, a first air-avoiding groove is provided on a side of the plate body facing the liquid crystal module, and the first air-avoiding groove is connected to the placement groove.

[0010] Furthermore, a second air-avoiding groove is arranged at the bottom of the placement groove, and the second air-avoiding groove penetrates the plate body.

[0011] Furthermore, a third air-avoiding groove is disposed on a side of the plate body facing away from the liquid crystal module, and the third air-avoiding groove is connected to the second air-avoiding groove.

[0012] Furthermore, a fixing groove adapted to the flexible portion is provided on a side of the pressing block facing the plate body, and a portion of the flexible portion is placed outside the fixing groove to press the liquid crystal module.

[0013] Furthermore, the driving mechanism also includes a handle, which is movably connected to the connecting arm, and the handle is used to drive the connecting arm to move.

[0014] Furthermore, the depth of the placement groove is smaller than the thickness of the liquid crystal module.

[0015] Furthermore, a plurality of mounting holes are provided on the plate body, and the mounting holes are used to fix the driving mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the liquid crystal module detection fixture from a first viewing angle in an embodiment of the utility model;

[0017] Figure 2 This is a working schematic diagram of a liquid crystal module detection fixture in an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the liquid crystal module detection fixture from a second viewing angle in an embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the liquid crystal module detection fixture in the embodiment of the utility model from a third viewing angle;

[0020] Description of main component symbols:

[0021]

[0022]

[0023] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0024] 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. Several embodiments of the present invention are given in the drawings. 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 these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0025] 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.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art 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.

[0027] See also Figures 1 to 4The liquid crystal module detection fixture in the embodiment of the utility model includes a plate body 100, the plate body 100 is provided with a placement groove 110, the placement groove 110 is used to place the liquid crystal module 400, the plate body 100 is provided with a first air avoidance groove 120 on a side facing the liquid crystal module 400, the first air avoidance groove 120 is connected to the placement groove 110, a second air avoidance groove 130 is provided at the bottom of the placement groove 110, the second air avoidance groove 130 passes through the plate body 100, and the plate body 100 is provided with a third air avoidance groove 140 on a side facing away from the liquid crystal module 400, the third air avoidance groove 140 is connected to the second air avoidance groove 130. Preferably, when the liquid crystal module 400 is placed in the placement groove 110, the CG cover faces upward, the upper surface of the liquid crystal module 400 is 0.25 mm higher than the upper surface of the plate body 100, the shape of the placement groove 110 is adapted to the liquid crystal module 400, and the four corners are arranged in arc shape, the depth of the first air avoidance groove 120 is less than the depth of the placement groove 110, the first air avoidance groove 120 is used to place the tear handle of the shipping protective film, the second air avoidance groove 130 is used for air avoidance processing of FPC components, and the third air avoidance groove 140 is used for air avoidance processing on the back of IC.

[0028] A plurality of driving mechanisms are arranged on a side of the board 100 facing the liquid crystal module 400. A plurality of mounting holes 150 are arranged on the board 100. The mounting holes 150 are used to fix the driving mechanisms. The driving mechanisms include a connecting arm 210 and a handle 220. The connecting arm 210 is connected to the board 100. A fixing hole is arranged on the connecting arm 210. A connecting column 230 is movable in the fixing hole. A limiting member is arranged on the connecting arm 210 to fix the column 230 in the fixing hole. The connecting arm 210 is used to drive the fixed column 230 to move in a vertical direction. The connecting arm 210 is movably connected to the handle 220. The handle 220 is used to drive the connecting arm 210 to move. The column 230 is connected to a pressing block 300 at one end facing the board 100. A flexible portion 320 is arranged on the pressing block 300 at one end facing the board. Preferably, the mounting hole 150 is a screw hole, and the driving mechanism is fixed to the plate body 100 by bolts. Two driving mechanisms are provided and arranged opposite to each other. The driving mechanism adopts a quick pressing head. The handle 220 is the handle of the quick pressing head. Pressing down the handle 220 can press down the connecting arm 210, and the handle 220 and the connecting arm 210 can maintain the pressed state, so that the pressing block 300 can continuously generate downward pressure on the liquid crystal module 400. The column 230 is provided with a thread, and the limiting member is a nut. The limiting member is disassembled and connected to the connecting arm 210. The fixing hole has a long side, and the long side is The horizontal plane is perpendicular to the edge of the liquid crystal module 400, so that the column 230 can not only adjust the height up and down in the fixing hole, but also move closer to or away from the liquid crystal module 400 in the horizontal direction. After the operator adjusts the position of the column 230, the position of the column 230 is fixed by the limiter. The pressing block 300 is partially placed above the placement groove 110 to provide pressure on the periphery of the liquid crystal module 400. The flexible part 320 is partially placed above the placement groove 110 to press the periphery of the liquid crystal module 400. The flexible part 320 is made of long strip antistatic silicone, and the pressing block 300 is made of bakelite. It can be understood that by adjusting the height of the column 230, that is, adjusting the vertical distance between the pressing block 300 and the connecting arm 210, the pressure of the pressing block 300 on the liquid crystal module 400 when the quick pressing head is in the downward pressing state can be adjusted. It can be understood that by pressing the local periphery of the liquid crystal module 400 and making the display test machine in the factory send a white picture to the liquid crystal module 400, the operator can judge by naked eyes whether the white color is uniform and not yellowish. If the white color is uniform and not yellowish, it is a good product. If yellowing occurs, the product should be intercepted in time to prevent defective products from flowing out and prevent a negative impact on the shipment yield.

[0029] See also Figure 2, the pressing block 300 is provided with a fixing groove 310 adapted to the flexible part 320 on one side facing the plate body 100, and the flexible part 320 is partially placed outside the fixing groove 310 to press the liquid crystal module 400, and the depth of the placement groove 110 is less than the thickness of the liquid crystal module 400. Preferably, the flexible part 320 protrudes from the lower surface of the pressing block 300 by 0.05mm, so that the flexible part 320 contacts the surface of the liquid crystal module 400, and the pressing of the liquid crystal module 400 by human fingers can be simulated by silicone, and the exposed part of the silicone material is relatively thin, which can smoothly transmit pressure. It can be understood that if the silicone material is too thick, insufficient pressure may occur, and the side wall of the fixing groove 310 creates a spatial restriction on the flexible part 320, preventing the flexible part 320 from being excessively deformed during the extrusion process, thereby preventing insufficient pressing force, resulting in inaccurate yellowing detection.

[0030] 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.

[0031] The above-mentioned embodiments only express several 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 variations 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 liquid crystal module detection fixture, characterized in that: It includes a plate body, the plate body is provided with a placement groove, the placement groove is used to place the liquid crystal module, the plate body is provided with a plurality of driving mechanisms on a side facing the liquid crystal module, the driving mechanism includes a connecting arm connected to the plate body, the connecting arm is provided with a fixing hole, a connecting column is moved in the fixing hole, a limiting piece is provided on the connecting arm to fix the column in the fixing hole, the connecting arm is used to drive the fixed column to move in the vertical direction, the column is connected to a pressure block toward one end of the plate body, and a flexible portion is provided on the pressure block toward one end of the plate body.

2. The liquid crystal module detection fixture according to claim 1, characterized in that: A first air-avoiding groove is arranged on a side of the plate body facing the liquid crystal module, and the first air-avoiding groove is connected to the placement groove.

3. The liquid crystal module detection fixture according to claim 1, characterized in that: A second air-avoiding groove is arranged at the bottom of the placement groove, and the second air-avoiding groove penetrates through the plate body.

4. The liquid crystal module detection fixture according to claim 3, characterized in that: A third air-avoiding groove is disposed on a side of the plate body facing away from the liquid crystal module, and the third air-avoiding groove is connected to the second air-avoiding groove.

5. The liquid crystal module detection fixture according to claim 1, characterized in that: A fixing groove matched with the flexible part is arranged on one side of the pressing block facing the plate body, and a part of the flexible part is arranged outside the fixing groove to press the liquid crystal module.

6. The liquid crystal module detection fixture according to claim 1, characterized in that: The driving mechanism also includes a handle, which is movably connected to the connecting arm and is used to drive the connecting arm to move.

7. The liquid crystal module detection fixture according to claim 1, characterized in that: The depth of the placement groove is less than the thickness of the liquid crystal module.

8. The liquid crystal module detection fixture according to claim 1, characterized in that: The plate body is provided with a plurality of mounting holes, and the mounting holes are used to fix the driving mechanism.

Images