Display screen detection device

Abstract

The utility model discloses a display screen detection device, which relates to the technical field of display screen detection and comprises a base, a detection structure used for detecting a display screen is arranged on the base, a protection structure electrically connected with the input end of the detection structure and used for preventing the display screen from being burnt out is arranged on the base, and the output end of the protection structure is electrically connected with an external power supply. According to the device, the display screen can be prevented from being burnt out due to overlarge current and voltage during detection through the protection structure, and unnecessary loss of the display screen during production is reduced.

Description

Technical Field

[0001] This utility model relates to the field of display screen testing technology, and in particular to a display screen testing device. Background Technology

[0002] With the rapid development of technology, display screens have become an indispensable component of various smart devices, widely used in mobile phones, tablets, laptops, televisions and various professional display devices. During the production process, the display screen undergoes a power-on test, but it is prone to burnout due to excessive current and voltage during the testing process, resulting in damage to the display screen. Utility Model Content

[0003] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the problem of the display screen burning out due to excessive current and voltage during testing.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a display screen testing device, including a base, a testing structure for testing the display screen is provided on the base, a protective structure electrically connected to the input end of the testing structure to prevent the display screen from burning out is provided on the base, and the output end of the protective structure is electrically connected to an external power supply.

[0005] As a further embodiment of this utility model, the detection structure includes: a pressing plate rotatably mounted on the base for pressing the display screen, and the surface of the pressing plate is provided with a flexible circuit board for detecting the power supply of the display screen.

[0006] As a further embodiment of this utility model, the protective structure includes: a protective circuit board disposed on the top of the base and connected to the flexible circuit board wires, the top of the protective circuit board being provided with a plurality of plugs that cooperate with the flexible circuit board, and a protective circuit being provided on the top of the protective circuit board.

[0007] As a further embodiment of this utility model, the base is provided with an installation block, the installation block is provided with a connecting block connected to the clamping plate, the top of the installation block is connected to multiple support plates, the connecting block is located between the multiple support plates, and a rotating component is provided between the connecting block and the multiple support plates to drive the connecting block to rotate in the vertical direction.

[0008] As a further embodiment of this utility model, the rotating component includes: a rotating shaft connected to both sides of the connecting block, a rotating groove is provided on one side of the support plate, one end of the rotating shaft extends into the rotating groove, and a limiting rod for limiting the flipping angle of the connecting plate is connected to one side of the support plate.

[0009] As a further embodiment of this utility model, the surface of the pressing plate is provided with multiple connecting plates, and the surface of the multiple connecting plates is provided with cameras. Multiple fixing plates are connected to the base, and the top of each of the multiple fixing plates is connected with a support rod. The top of the support rod is connected with a display screen, and the display screen is connected to the camera wires. Both the support rod and the display screen are inclined.

[0010] As a further embodiment of this utility model, a placement block for placing a display screen is installed on the base, and an insulating plate is connected to the surface of the placement block to prevent leakage of current from the flexible circuit board.

[0011] As a further embodiment of this utility model, the top of the base is provided with a positioning block for defining the position of the display screen.

[0012] As a further embodiment of this utility model, the positioning block includes a stop block disposed on the base and conforming to the shape of the display screen, and a top block connected below the stop block to support the stop block.

[0013] As a further embodiment of this utility model, the surface of the pressing plate is provided with an opening, and the connecting plate is located inside the opening.

[0014] Compared with existing technologies, the beneficial effects of this technical solution are as follows:

[0015] This invention, through its protective structure, can prevent the display screen from being burned out due to excessive current and voltage during testing, thus reducing unnecessary losses during the production of the display screen. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural view of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 This is a side view of the present invention;

[0020] Figure 4 This is a three-dimensional view of the display screen detection structure of this utility model;

[0021] Figure 5 This is a schematic diagram illustrating the separation effect of the mounting block and connecting block of this utility model;

[0022] The corresponding labels in the attached diagram are explained as follows:

[0023] 1. Base; 101. Mounting block; 102. Placement block; 103. Insulating plate; 104. Positioning block; 1041. Stop block; 1042. Top block; 2. Connecting block; 201. Pressing plate; 202. Opening; 203. Connecting plate; 204. Flexible circuit board; 205. Support plate; 206. Rotating shaft; 207. Rotating groove; 208. Limiting rod; 3. Protective circuit board; 301. Plug; 4. Fixing plate; 401. Support rod; 402. Display screen. Detailed Implementation

[0024] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution: a display screen testing device, including a base 1, a testing structure for testing the display screen is provided on the base 1, a protection structure electrically connected to the input end of the testing structure to prevent the display screen from burning out, and an output end of the protection structure electrically connected to an external power supply. The protection structure can prevent the display screen from burning out due to excessive current and voltage during testing, thereby reducing unnecessary losses to the display screen during production.

[0026] In some embodiments, the detection structure includes: a clamping plate 201 rotatably mounted on a base 1 for pressing a display screen; a flexible circuit board 204 for detecting the power supply of the display screen is provided on the surface of the clamping plate 201; a mounting block 101 is provided on the base 1; a connecting block 2 connected to the clamping plate 201 is provided on the mounting block 101; a plurality of support plates 205 are connected to the top of the mounting block 101; the connecting block 2 is located between the plurality of support plates 205; a rotating component is provided between the connecting block 2 and the plurality of support plates 205 to drive the connecting block 2 to rotate in a vertical direction; an opening 202 is provided on the surface of the clamping plate 201; and a connecting plate 203 is located inside the opening 202. When the display screen is being tested, the connecting block 2 is rotated. After the connecting block 2 rotates, the clamping plate 201 will also rotate, causing the connecting plate 203 in the opening 202 to move together. When the connecting plate 203 moves, the flexible circuit board 204 will move along with the connecting plate 203. When the flexible circuit board 204 moves, it will contact the gold fingers on the display screen, thereby powering the display screen to start it up and detect whether there are any dead pixels on the display screen. The protrusions on both sides of the clamping plate 201 can press down on the display screen while making it easy to rotate the clamping plate 201, avoiding the inconvenience of pulling when the clamping plate 201 needs to be rotated.

[0027] In some embodiments, the protection structure includes: a protection circuit board 3 disposed on the top of the base 1 and electrically connected to the flexible circuit board 204. The top of the protection circuit board 3 is provided with a plurality of plugs 301 that cooperate with the flexible circuit board 204. The top of the protection circuit board 3 is provided with a protection circuit. Before the flexible circuit board 204 transmits current to the display screen, the current will first pass through the protection circuit board 3. When the voltage in the current is too high, the protection circuit board 3 will be burned out first, so that the current with excessive voltage will not pass through the flexible circuit board 204 to supply power to the display screen, thereby avoiding the display screen from being burned out due to excessive current and voltage.

[0028] In some embodiments, the rotating component includes: a rotating shaft 206 connected to both sides of the connecting block 2; a rotating groove 207 formed on one side of the support plate 205; one end of the rotating shaft 206 extending into the rotating groove 207; and a limiting rod 208 connected to one side of the support plate 205 to limit the rotation angle of the connecting plate 203. When testing the display screen, the clamping plate 201 can be rotated. Because one end of the rotating shaft 206 is located inside the rotating groove 207, the clamping plate 201 can begin to rotate through the rotational connection between the rotating shaft 206 and the rotating groove 207. When the clamping plate 201 rotates, it will contact the display screen to press it down. At the same time, when the clamping plate 201 contacts the display screen, the flexible circuit board 204 will contact the gold fingers on the display screen, so that the display screen can be tested. After the display screen is tested, the clamping plate 201 can be rotated away from the display screen, so that the clamping plate 201 begins to move away from the display screen. When the clamping plate 201 moves, its back side will contact the limit rod 208. After the clamping plate 201 contacts the limit rod 208, it cannot rotate away from the display screen, thus achieving the limiting effect.

[0029] In some embodiments, the surface of the clamping plate 201 is provided with multiple connecting plates 203, and the surfaces of the multiple connecting plates 203 are provided with cameras. The top of the base 1 is connected to multiple fixing plates 4, and the top of each of the multiple fixing plates 4 is connected to a support rod 401. The top of the support rod 401 is connected to a display screen 402, and the display screen 402 is connected to the camera wires. Both the support rod 401 and the display screen 402 are inclined. When the flexible circuit board 204 contacts the gold fingers on the display screen, the camera on the connecting plate 203 will transmit the captured image data to the display screen 402 through the wires. After receiving the data from the camera, the display screen 402 will display the image, allowing the operator to fine-tune the position of the display screen through the display screen 402, so that the flexible circuit board 204 and the gold fingers on the display screen can make full contact, ensuring that the display screen can perform normal testing. The inclination setting of the display screen 402 makes it easier for the operator to view the display screen 402, improving the operator's work efficiency.

[0030] In some embodiments, a placement block 102 for placing a display screen is connected to the top of the base 1. An insulating plate 103 for isolating current is connected to the surface of the placement block 102. When testing the display screen, the display screen is first placed on the placement block 102, with the end with the gold fingers located on the insulating plate 103. This can prevent current from moving to the placement block 102 when there is current leakage between the flexible circuit board 204 and the gold fingers, thereby improving the safety of the overall testing device.

[0031] In some embodiments, the top of the base 1 is provided with a positioning block 104 for defining the position of the display screen. As a further embodiment of the present invention, the positioning block 104 includes a stop block 1041 disposed on the base 1 and matching the shape of the display screen, and a top block 1042 connected to the bottom of the stop block 1041 and supporting the stop block 1041. The shape matching the stop block 1042 and the display screen allows the position of the display screen to be fixed directly by the stop block 1042 after the display screen is placed on the top of the placement block 102, so that the gold fingers on the display screen can be initially aligned with the flexible circuit board 204, which is convenient for the staff to make subsequent fine adjustments. When dealing with other shapes of display screens, the positioning block 105 can be disassembled and a display screen matching the shape of the display screen can be reinstalled, ensuring the applicability of the testing device.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A display screen testing device, characterized in that, The device includes a base (1), on which a detection structure for detecting the display screen is provided. The base (1) is provided with a protection structure electrically connected to the input end of the detection structure to prevent the display screen from burning out. The output end of the protection structure is electrically connected to an external power supply. The protection structure includes a protection circuit board (3) located on the top of the base (1) and electrically connected to a flexible circuit board (204). The top of the protection circuit board (3) is provided with multiple plugs (301) that cooperate with the flexible circuit board (204). The top of the protection circuit board (3) is provided with a protection circuit.

2. The display screen testing device according to claim 1, characterized in that, The detection structure includes: a pressing plate (201) rotatably mounted on a base (1) for pressing the display screen, and the surface of the pressing plate (201) is provided with a flexible circuit board (204) for detecting the power supply of the display screen.

3. The display screen testing device according to claim 1, characterized in that, The base (1) is provided with a mounting block (101), and the mounting block (101) is provided with a connecting block (2) connected to the clamping plate (201). The top of the mounting block (101) is connected to multiple support plates (205). The connecting block (2) is located between the multiple support plates (205). A rotating component is provided between the connecting block (2) and the multiple support plates (205) to drive the connecting block (2) to rotate in the vertical direction.

4. The display screen testing device according to claim 3, characterized in that, The rotating component includes: a rotating shaft (206) connected to both sides of the connecting block (2), a rotating groove (207) opened on one side of the support plate (205), one end of the rotating shaft (206) extending into the rotating groove (207), and a limiting rod (208) connected to one side of the support plate (205) to limit the flipping angle of the connecting plate (203).

5. The display screen testing device according to claim 2, characterized in that, The surface of the clamping plate (201) is provided with multiple connecting plates (203), and the surface of the multiple connecting plates (203) is provided with a camera. Multiple fixing plates (4) are connected to the base (1), and the top of each of the multiple fixing plates (4) is connected with a support rod (401). The top of the support rod (401) is connected with a display screen (402), and the display screen (402) is connected to the camera wire. Both the support rod (401) and the display screen (402) are inclined.

6. The display screen testing device according to claim 1, characterized in that, The base (1) is equipped with a placement block (102) for placing the display screen, and the surface of the placement block (102) is connected to an insulating plate (103) to prevent the current leakage of the flexible circuit board (204).

7. The display screen testing device according to claim 1, characterized in that, The base (1) has a positioning block (104) on its top for defining the position of the display screen.

8. The display screen testing device according to claim 7, characterized in that, The positioning block (104) includes a stop block (1041) disposed on the base (1) and matching the shape of the display screen, and a top block (1042) connected to the bottom of the stop block (1041) and supporting the stop block (1041).

9. The display screen testing device according to claim 5, characterized in that, The surface of the clamping plate (201) has an opening (202), and the connecting plate (203) is located inside the opening (202).

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