A lighting test module

Abstract

The present invention discloses a lighting test module for display screen lighting test, comprising a light box, an adjustable positioning structure and a lighting component, the light box provides backlight upwards, the adjustable positioning structure is arranged on the top of the light box, comprising an X-axis positioning plate, a Y-axis positioning plate, an X-axis linear driving device and a Y-axis linear driving device, the X-axis linear driving device is used to drive the X-axis positioning plate to move along the X-axis direction, the Y-axis linear driving device is used to drive the Y-axis positioning plate to move along the Y-axis direction, the inner side surface of the X-axis positioning plate and the inner side surface of the Y-axis positioning plate are surrounded to form a detection area and fix the display screen, the lighting component is arranged on the top of the X-axis positioning plate and / or the Y-axis positioning plate, the lighting component comprises a crimping driving device and a plurality of needle blocks, the needle blocks are located above the detection area, and the crimping driving device is used to drive the needle blocks to rise and press down. The present invention can be applied to lighting tests of display screens of different sizes and specifications, and has good versatility.

Description

Technical Field

[0001] The invention relates to the technical field of display screen detection, and in particular to a lighting test module. Background Art

[0002] Display screens are an integral and important part of electronic devices. During manufacturing, in order to ensure product quality, multiple inspection procedures are usually required for quality inspection. Among them, an important inspection procedure is to perform a lighting test on the display screen through a lighting test device. The lighting test stage is very important for the quality control of the display screen. The lighting test equipment can detect whether the display screen products have quality problems such as bad pixels, dirt, scratches, etc., so as to facilitate timely interception and processing of defective display screen products. However, the lighting test equipment currently used has poor versatility. When in use, it can usually only light up and test display screen products of specific sizes and specifications. It cannot be used for display screen products of multiple sizes and specifications at the same time. The equipment has poor versatility and the cost of testing is high. Summary of the invention

[0003] The purpose of the present invention is to provide a lighting test module which can be applied to display screen products of various sizes and specifications and has good versatility.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A lighting test module is used for display screen lighting test, comprising a light box, an adjustable positioning structure and a lighting component, the light box provides backlight upwards, the adjustable positioning structure is arranged on the top of the light box, comprising an X-axis positioning plate, a Y-axis positioning plate, an X-axis linear drive device and a Y-axis linear drive device, the X-axis linear drive device is used to drive the X-axis positioning plate to move along the X-axis, the Y-axis linear drive device is used to drive the Y-axis positioning plate to move along the Y-axis, the inner side surface of the X-axis positioning plate and the inner side surface of the Y-axis positioning plate enclose a detection area and fix the display screen, the lighting component is arranged on the top of the X-axis positioning plate and / or the Y-axis positioning plate, the lighting component comprises a crimping drive device and a plurality of needle blocks, the needle block is located above the detection area, and the crimping drive device is used to drive the needle block to rise and press down.

[0006] Furthermore, a shading plate is fixedly provided on the outer side of the X-axis positioning plate and the outer side of the Y-axis positioning plate, a first movable platform is provided at the bottom of the Y-axis positioning plate, the X-axis linear drive device is provided between the X-axis positioning plate and the light box, the Y-axis drive device is provided between the Y-axis positioning plate and the first movable platform, and the bottom of the first movable platform is slidably connected to the light box along the X-axis direction.

[0007] Furthermore, one side of the Y-axis positioning plate is connected to an adjacent X-axis positioning plate via a drag chain, and the drag chains are arranged along the Y-axis direction and located outside the two diagonals of the detection area.

[0008] Furthermore, the crimping drive device includes a vertical plate, a second movable platform, a guide connecting rod and a driving motor. The vertical plate is vertically fixed with two pieces. The second movable platform is movably connected between the two vertical plates. The needle block is arranged on the second movable platform. One end of the guide connecting rod is interconnected with the second movable platform, and the other end is driven to rotate by the driving motor. An arc-shaped guide structure is arranged between the guide connecting rod and the vertical plate, and the guide trajectory of the arc-shaped guide structure is in the shape of an arc.

[0009] Furthermore, the arc-shaped guide structure includes a guide groove and a guide protrusion, the guide groove is provided on the side wall surface of the vertical plate and is in an arc shape, and the guide protrusion is protrudingly arranged on the side wall surface of the guide connecting rod and is located in the guide groove.

[0010] Furthermore, the guide connecting rod is rotatably connected to the side wall of the second movable platform, and a first linear guide and a second linear guide are arranged between the two side edges of the second movable platform and the two vertical plates. The first linear guide is arranged along the Z-axis direction, and the second linear guide is arranged along the X-axis direction or the Y-axis direction, and faces the detection area.

[0011] Furthermore, the lighting component also includes a conversion terminal block, and the pin block is composed of a plurality of PIN pins and is electrically connected to the conversion terminal block.

[0012] Furthermore, the conversion terminal block is fixedly connected to the second movable platform, and the needle block is slidably arranged on the top of the second movable platform along the X-axis or the Y-axis.

[0013] Furthermore, an X-axis limit block is provided on the top of the X-axis positioning plate for sliding along the X-axis direction, and a Y-axis limit block is provided on the top of the Y-axis positioning plate for sliding along the Y-axis direction.

[0014] Furthermore, the light box includes a hollow box body and a backlight panel, the top of the box body has a light-transmitting opening, and the backlight panel is fixedly arranged inside the box body and located directly below the opening.

[0015] The present invention has the following beneficial effects:

[0016] 1. The lighting test module adopts a light box to provide backlight, and adopts an adjustable positioning structure to fix the display screen. It is driven by the X-axis linear drive device and the Y-axis linear drive device to adjust the position of the X-axis positioning plate and the Y-axis positioning plate, so as to adapt to display screens of different dimensions and specifications. During the adjustment, the position of the needle block also changes accordingly. The needle block is pressed down by the crimping drive device, so that the needle block can be crimped and the display screen can be lit, which is convenient for subsequent defect inspection. The lighting test module can be applied to the fixing and lighting of display screens of different sizes and specifications, has good versatility, and is conducive to reducing the cost of lighting test.

[0017] 2. Setting the shading plate to cooperate with the adjustment of the X-axis positioning plate and the Y-axis positioning plate can also play a certain shading effect during the adjustment process to prevent light leakage from the light box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the adjustable positioning structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the crimping drive device of the present invention.

[0022] Figure 5 for Figure 4 A partial enlarged schematic diagram of part A.

[0023] Figure 6 It is a schematic diagram of the light box structure of the present invention.

[0024] Explanation of the main component symbols: 1. Light box; 2. Adjustable positioning structure; 21. X-axis positioning plate; 211. X-axis limit block; 22. Y-axis positioning plate; 221. Y-axis limit block; 23. Y-axis linear drive device; 24. First moving platform; 25. Shading plate; 26. Drag chain; 3. Lighting component; 31. Needle block; 32. Crimp drive device; 321. Vertical plate; 322. Second moving platform; 323. Guide connecting rod; 324. Drive motor; 325. Arc guide structure; 3251. Guide groove; 3252. Guide protrusion; 326. First linear guide rail; 327. Second linear guide rail; 328. Conversion terminal block; 4. Detection area. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figure 1-6As shown, the present invention discloses a lighting test module for display screen lighting test, comprising a light box 1, an adjustable positioning structure 2 and a lighting component 3, the light box 1 provides backlight upward, the adjustable positioning structure 2 is arranged on the top of the light box 1, and comprises an X-axis positioning plate 21, a Y-axis positioning plate 22, an X-axis linear driving device and a Y-axis linear driving device 23, the X-axis linear driving device is used to drive the X-axis positioning plate 21 to move along the X-axis, the Y-axis linear driving device 23 is used to drive the Y-axis positioning plate 22 to move along the Y-axis, the inner side surface of the X-axis positioning plate 21 and the inner side surface of the Y-axis positioning plate 22 enclose a detection area 4 and fix the display screen, the lighting component 3 is arranged on the top of the X-axis positioning plate 21 and / or the Y-axis positioning plate 22, the lighting component 3 comprises a crimping driving device 32 and a plurality of needle blocks 31, the needle block 31 is located above the detection area 4, and the crimping driving device 32 is used to drive the needle block 31 to rise and press down. Among them, the X-axis linear drive device (not shown in the figure) and the Y-axis linear drive device 23 include push rods and linear guide rails (partially not shown in the figure).

[0027] A shading plate 25 is fixedly arranged on the outside of the X-axis positioning plate 21 and the outside of the Y-axis positioning plate 22, a first moving platform 24 is arranged at the bottom of the Y-axis positioning plate 22, an X-axis linear driving device is arranged between the X-axis positioning plate 21 and the light box 1, a Y-axis driving device 24 is arranged between the Y-axis positioning plate 22 and the first moving platform 24, and the bottom of the first moving platform 24 is slidably connected to the light box 1 along the X-axis direction. The shading plate 25 moves synchronously with the X-axis positioning plate 21 and the Y-axis positioning plate 22, and when the adjustable positioning structure 2 is adjusted, it can also properly shield the light box 1 to prevent light leakage from the periphery.

[0028] One side of the Y-axis positioning plate 22 is connected to the adjacent X-axis positioning plate 21 through a drag chain 26. The drag chains 26 are all arranged along the Y-axis direction and are located outside the two diagonals of the detection area 4. That is, only one side of any X-axis positioning plate 21 or any Y-axis positioning plate 22 is provided with a drag chain 26. The setting of the drag chain 26 will not limit the movement of the Y-axis positioning plate 22 along the Y-axis direction, but in the X-axis direction, when the X-axis linear drive device drives the X-axis positioning plate 21 to move, the connected Y-axis positioning plate 22 can move along the X-axis direction along with the first mobile platform 24, and it is faster to adjust to adapt to the size of the display screen.

[0029] The crimping drive device 32 includes a vertical plate 321, a second movable platform 322, a guide link 323 and a drive motor 324. The vertical plate 321 is vertically fixed with two pieces. The second movable platform 322 is movably connected between the two vertical plates 321. The needle block 31 is arranged on the second movable platform 322. One end of the guide link 323 is connected to the second movable platform 322, and the other end is driven to rotate by the drive motor 324. An arc-shaped guide structure 325 is arranged between the guide link 323 and the vertical plate 321. The guide track of the arc-shaped guide structure 325 is in the shape of an arc. The arc-shaped guide structure 325 includes a guide groove 3251 and a guide protrusion 3252. The guide groove 3251 is arranged on the side wall surface of the vertical plate 321 and is in the shape of an arc. The guide protrusion 3252 is arranged on the side wall surface of the guide link 323 and is located in the guide groove 3251. The guide link 323 is rotatably connected to the side wall of the second mobile platform 322. The first linear guide 326 and the second linear guide 327 are arranged between the two sides of the second mobile platform 322 and the two vertical plates 321. The first linear guide 326 is arranged along the Z-axis direction, and the second linear guide 327 is arranged along the X-axis direction or the Y-axis direction, and faces the detection area 4. When the driving motor 324 drives the guide link 323 to rotate, the guide protrusion 3252 moves along the guide groove 3251. At this time, the second mobile platform 322, which is movably connected to the vertical plate 321 through the first linear guide 326 and the second linear guide 327, rises and falls accordingly, driving the needle block 31 arranged on the second mobile platform 322, and controlling the needle block 31 to rise or press down to press the contact terminal "gold finger" on the display screen.

[0030] The lighting component 3 also includes a conversion terminal block 328, and the needle block 31 is composed of a plurality of PIN pins and is electrically connected to the conversion terminal block 328. The conversion terminal block 328 is fixedly connected to the second mobile platform 322, and is used to convert the line sequence of the PG signal machine with the line sequence of the PIN pins. The needle block 31 is set on the top of the second mobile platform 322 for sliding along the X-axis or Y-axis. An X-axis limit block 211 is set on the top of the X-axis positioning plate 21 for sliding along the X-axis, and a Y-axis limit block 221 is set on the top of the Y-axis positioning plate 22 for sliding along the Y-axis. The X-axis limit block 211 and the Y-axis limit block 221 can mark the corresponding positions of display screen products of different specifications and sizes, and limit the length direction. The light box 1 includes an internal hollow box body and a backlight panel (not shown in the figure), and the top of the box body has a light-transmitting opening. A card holder is set inside the light box 1, and the backlight panel is fixedly set inside the box body and located directly below the opening through the card holder.

[0031] The lighting test module is adapted to the fixation of display screens of different specifications and sizes through the adjustable positioning structure 2, and cooperates with the crimping drive device 32 to control the rise and depression of the needle block 31, so as to realize mutual crimping and lighting with display screens of different specifications and sizes, and cooperates with the light box 1 with strong light-shielding property to provide backlight. The whole module has good versatility, can provide good observation conditions for defect inspection of display screens, is conducive to reducing the cost of lighting test, and is suitable for manual re-inspection of NG products detected by machines.

[0032] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A lighting test module, used for display lighting test, characterized in that: It includes a light box, an adjustable positioning structure and a lighting component, the light box provides backlight upwards, the adjustable positioning structure is arranged on the top of the light box, and includes an X-axis positioning plate, a Y-axis positioning plate, an X-axis linear driving device and a Y-axis linear driving device, the X-axis linear driving device is used to drive the X-axis positioning plate to move along the X-axis, the Y-axis linear driving device is used to drive the Y-axis positioning plate to move along the Y-axis, the inner side surface of the X-axis positioning plate and the inner side surface of the Y-axis positioning plate enclose a detection area and fix the display screen, the lighting component is arranged on the top of the X-axis positioning plate and / or the Y-axis positioning plate, the lighting component includes a crimping driving device and a plurality of needle blocks, the needle block is located above the detection area, and the crimping driving device is used to drive the needle block to rise and press down; The outer side of the X-axis positioning plate and the outer side of the Y-axis positioning plate are both fixedly provided with a shading plate, the bottom of the Y-axis positioning plate is provided with a first movable platform, the X-axis linear drive device is provided between the X-axis positioning plate and the light box, the Y-axis linear drive device is provided between the Y-axis positioning plate and the first movable platform, and the bottom of the first movable platform is slidably connected with the light box along the X-axis direction; The crimping drive device includes a vertical plate, a second movable platform, a guide connecting rod and a driving motor. The vertical plate is vertically fixed with two pieces. The second movable platform is movably connected between the two vertical plates. The needle block is arranged on the second movable platform. One end of the guide connecting rod is interconnected with the second movable platform, and the other end is driven to rotate by the driving motor. An arc-shaped guiding structure is arranged between the guide connecting rod and the vertical plate, and the guiding track of the arc-shaped guiding structure is in the shape of an arc.

2. A lighting test module as claimed in claim 1, characterized in that: One side of the Y-axis positioning plate is connected to an adjacent X-axis positioning plate via a drag chain, and the drag chains are arranged along the Y-axis direction and are located outside the two diagonal parts of the detection area.

3. A lighting test module as claimed in claim 1, characterized in that: The arc-shaped guide structure includes a guide groove and a guide protrusion. The guide groove is arranged on the side wall surface of the vertical plate and is in an arc shape. The guide protrusion is protrudingly arranged on the side wall surface of the guide connecting rod and is located in the guide groove.

4. A lighting test module as claimed in claim 1, characterized in that: The guide connecting rod is rotatably connected to the side wall of the second movable platform. A first linear guide and a second linear guide are arranged between the two side edges of the second movable platform and the two vertical plates. The first linear guide is arranged along the Z-axis direction, and the second linear guide is arranged along the X-axis direction or the Y-axis direction and faces the detection area.

5. A lighting test module as claimed in claim 1, characterized in that: The lighting component also includes a conversion terminal block, and the pin block is composed of a plurality of PIN pins and is electrically connected to the conversion terminal block.

6. A lighting test module as claimed in claim 5, characterized in that: The conversion terminal block is fixedly connected to the second movable platform, and the needle block is slidably arranged on the top of the second movable platform along the X-axis direction or the Y-axis direction.

7. The lighting test module according to claim 1, characterized in that: The top of the X-axis positioning plate is provided with an X-axis limit block for sliding along the X-axis, and the top of the Y-axis positioning plate is provided with a Y-axis limit block for sliding along the Y-axis.

8. The lighting test module according to claim 1, characterized in that: The light box comprises a hollow box body and a backlight panel. The top of the box body is provided with a light-transmitting opening. The backlight panel is fixedly arranged inside the box body and is located directly below the opening.

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