A positioning jig for backlight detection

Abstract

The utility model relates to the field of backlight detection, specifically point to a kind of positioning fixture for backlight detection, including by bottom plate, carrier plate, support frame is composed, the workbench of being examined to triangular frame, and the lighting electrode mobile positioning assembly etc. mainly consisting of slider, support plate with sliding slot, tow rope etc. of carrier plate bottom part;The utility model compared with prior art's advantage is in: the device is mainly for the backlight of being examined, provides a workbench of being examined, and the power supply end lighting electrode set on workbench, through a set of positioning assembly, it is arranged as movable form, when installing power supply to the electric connection port of different size backlight, different position, it can be adjusted at will and quickly, carries out positioning connection.

Description

Technical Field

[0001] This utility model relates to the field of backlight detection, specifically to a positioning fixture for backlight detection. Background Technology

[0002] In the electronic information society, the demand for displays is increasing. Displays themselves do not emit light; the light-emitting elements are mainly backlights that support the displays.

[0003] Backlights undergo quality testing at the factory. They are turned on by connecting to the circuit and are usually inspected by the human eye for black spots, white spots, scratches, etc. to confirm their quality. However, the size of the backlight varies depending on the application product. The interface between the power supply and the backlight is not easy to align and install, which often causes problems for testing. Therefore, a positioning fixture for backlight testing is provided. Utility Model Content

[0004] I. Technical problems to be solved

[0005] The technical problem this invention aims to solve is that when backlights and power supply terminals of different sizes are connected to each other, there are gaps between the ports, making installation difficult.

[0006] II. Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a positioning fixture for backlight detection, comprising:

[0008] A horizontally placed base plate is used to install the fixture on a relevant testing workbench. The front end of the base plate is rotatably connected to a carrier plate that supports the backlight of the display screen. The bottom front side of the carrier plate is connected to a carrier groove that supports the backlight. The rear side of the carrier plate is rotatably connected to a support frame that cooperates with the base plate to support the carrier plate and the backlight. The base plate is connected to an adjustment mechanism that cooperates with the support frame to adjust the tilt of the carrier plate.

[0009] The bottom of the carrier plate is connected to a support plate, and a lighting electrode for backlight detection is installed on the support plate. The lighting electrode is electrically connected to the corresponding gold finger connector on the backlight, so that the presence of white spot defects can be detected after the backlight is lit.

[0010] The support plate is equipped with a positioning component that allows the illuminating electrode to be moved and its position for electrical connection with the backlight to be selected.

[0011] Furthermore, the adjustment mechanism includes several slots evenly arranged on the top of the base plate, and the bottom end of the support frame is arc-shaped and is embedded in the slots, thereby fixing the position between the carrier plate and the base plate.

[0012] Furthermore, the positioning component includes a slider for mounting the lighting electrode, and the support plate is provided with a groove for the slider to be embedded therein and slidably connected to the support plate. A drive mechanism is jointly installed between the support plate and the slider to cause the slider to move within the groove carrying the lighting electrode.

[0013] Furthermore, the driving mechanism includes support columns rotatably connected to the bottom of both ends of the support plate. The top and bottom of the support columns are respectively connected to handles and grooves. The support plate is connected to support blocks above the support columns. Support shafts are rotatably connected to both ends of the slider. Pulleys are installed on the support shafts. A tensioned traction rope is connected between the support blocks. The end of the traction rope is led out from the side of the support blocks that are close to each other, and extends around the side of the pulleys that are close to each other and the side of the grooves that are far apart from each other.

[0014] Furthermore, the traction rope is made of a material with high frictional resistance. Through the frictional resistance between the rope and the pulley and the groove of the support column, the support column and support shaft rotate, and the slider carries the lighting electrode to move in the groove.

[0015] III. Beneficial Effects

[0016] The advantages of this invention compared to the prior art are as follows: This device mainly provides a test work frame for the backlight under test. The power supply terminal bright electrode is set on the work frame. Through a set of positioning components, it is arranged in a movable form. When installing and supplying power to backlights of different sizes and electrical connection ports at different positions, it can be adjusted freely and quickly for positioning and connection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of a positioning fixture for backlight detection according to this utility model. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the external structure of a positioning fixture for backlight detection according to this utility model. Figure 2 .

[0019] Figure 3 This is a schematic diagram of the external structure of a positioning fixture for backlight detection according to this utility model. Figure 3 .

[0020] Figure 4 This is a schematic diagram of the external structure of a positioning fixture for backlight detection according to this utility model. Figure 4 .

[0021] Figure 5 yes Figure 1 A partial structural diagram.

[0022] Figure 6 yes Figure 3 A schematic diagram of the structure of part A.

[0023] As shown in the figure: 1. Base plate, 2. Carrier plate, 3. Support frame, 4. Slot, 5. Carrier groove, 6. Support plate, 7. Slide groove, 8. Slider, 9. Illuminating electrode, 10. Support shaft, 11. Pulley, 12. Traction rope, 13. Support block, 14. Support column, 15. Groove, 16. Handle. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Example 1

[0026] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a positioning fixture for backlight detection, combined with the attached... Figure 1-4 The fixture includes: a horizontally placed base plate 1 for mounting the fixture on a relevant testing workbench; the front end of the base plate 1 is rotatably connected to a carrier plate 2 for receiving the backlight of the display screen; and the bottom front side of the carrier plate 2 is connected to a carrier groove 5 for receiving the backlight.

[0027] This application provides a work stand for testing backlights for displays. It mainly includes a horizontally placed base plate 1 and an inclined carrier plate 2. The bottom of the carrier plate 2 contains a carrier groove 5. The backlight can be placed directly on the carrier plate 2. Under the limited testing requirements, the backlight will not easily fall off the carrier plate 2.

[0028] The rear side of the carrier plate 2 is rotatably connected to a support frame 3 that cooperates with the base plate 1 to support the carrier plate 2 and the backlight. The base plate 1 is connected to an adjustment mechanism that cooperates with the support frame 3 to adjust the tilt state of the carrier plate 2. The adjustment mechanism includes several slots 4 evenly arranged on the top of the base plate 1. The bottom end of the support frame 3 is arc-shaped and is partially embedded in the slots 4 to fix the position between the carrier plate 2 and the base plate 1.

[0029] The tilted carrier plate 2 is securely fixed by a support frame 3 and a base plate 1, which together form a triangular structure. The carrier plate 2 is rotatably connected to the base plate 1, and the support frame 3 is also rotatably connected to the carrier plate 2. This allows the fixing angle between the three to be changed, thereby adjusting the tilt state of the carrier plate 2 carrying the backlight, which is convenient for intuitive visual inspection based on the sitting or standing posture of the personnel.

[0030] The support frame 3 is locked in position by being embedded in the slot 4 on the base plate 1 at its bottom end. In order to match the adjustability of the tilt state of the carrier plate 2 mentioned above, multiple slots 4 are provided on the base plate 1.

[0031] Example 2

[0032] Combined with appendix Figure 1-4 The bottom of the carrier plate 2 is connected to a support plate 6, and a lighting electrode 9 for backlight detection is installed on the support plate 6. The lighting electrode 9 is electrically connected to the corresponding gold finger connector on the backlight, so that the presence of defects such as white spots can be detected after the backlight is lit.

[0033] The lighting electrode 9 serves as the interface for the power supply end and is connected to the relevant electrical interface on the backlight to enable the circuit to be connected and the backlight to light up. By visually observing whether there are defects such as white spots, it can be determined whether the backlight under test is qualified.

[0034] The support plate 6 is equipped with a positioning component that can select the position of the backlight and the illumination electrode 9 by moving the illumination electrode 9. The positioning component includes a slider 8 that supports the illumination electrode 9. The support plate 6 is provided with a groove 7 for the slider 8 to be embedded in and held on the support plate 6 for sliding connection.

[0035] A drive mechanism is jointly installed between the support plate 6 and the slider 8 to move the slider 8 carrying the lighting electrode 9 within the slide groove 7, in conjunction with the attached... Figure 6 The driving mechanism includes support columns 14 rotatably connected to the bottom of both ends of the support plate 6. The top and bottom of the support columns 14 are respectively connected to handles 16 and grooves 15. A support block 13 is connected to the support plate 6 above the support columns 14. Figure 5 The slider 8 is rotatably connected to a support shaft 10 at both ends, and a pulley 11 is installed on the support shaft 10. The support blocks 13 are connected together by a tensioned traction rope 12.

[0036] The end of the traction rope 12 is led out from the side of the support block 13, and extends around the pulley 11 side of the pulley 11 and the groove 15 side of the groove 15. The traction rope 12 is made of a material with good friction resistance, such as a belt. Through the friction resistance between the rope and the pulley 11 and the groove 15 of the support column 14, the support column 14 and the support shaft 10 are rotated, and the slider 8 carries the lighting electrode 9 to move in the slide groove 7.

[0037] When a single person twists the handle 16, the corresponding support column 14 starts to rotate. Driven by the traction rope 12, the other two support shafts 10 carrying pulleys 11 and the support column 14 with grooves 15 on the support plate 6 also start to rotate. With the slider 8 as the boundary, when one side of the traction rope 12 becomes shorter, the other side becomes longer. During this process, the slider 8 is pulled by the traction rope 12 to the side where the rope is shorter through the pulley 11, thereby achieving the purpose of moving the lighting electrode 9 below the backlight and calibrating its electrical interface position.

[0038] Since the slider 8 is installed in the groove 7 of the support plate 6 by embedding, it has a relatively reliable fixing effect. After the movement stops, when the handle 16 and other components no longer rotate under external force, the lighting electrode 9 will not change position on its own.

[0039] In addition, since the device moves the lighting electrode 9, which serves as the power supply port, to locate and connect with the relevant interface position on the backlight, the connection line between the lighting electrode 9 and the relevant power supply should be longer to avoid restricting the positioning process.

[0040] In a specific implementation of this invention, when using this device to test the backlight, the backlight is placed on an inclined carrier plate 2, connected to the lighting electrode 9, powered on, and the backlight is observed to see if there are any optical defects.

[0041] Before use, the tilt of the carrier plate 2 can be adjusted by changing the connection between the rear support frame 3 and the base plate 1, according to the habits and comfort level of the testing personnel and the height position of the device on the relevant workbench.

[0042] If there is a gap between the ignition electrode 9 and the backlight under test on the carrier plate 2 during the power connection of the backlight, the following two methods can be selected for adjustment and positioning:

[0043] First, the position of the movable backlight in the carrier 5 is such that its interface is close to the lighting electrode 9 below.

[0044] Secondly, by turning any of the lower handles 16, the support column 14 is rotated, causing the traction rope 12 to move the slider 8 carrying the lighting electrode 9 to the corresponding interface of the backlight, and then the two are connected to the power source.

[0045] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A positioning fixture for backlight detection, characterized in that, include: A horizontally placed base plate (1) is used to install the fixture on a relevant testing workbench. The front end of the base plate (1) is rotatably connected to a carrier plate (2) for receiving the backlight of the display screen. The bottom front side of the carrier plate (2) is connected to a carrier groove (5) for receiving the backlight. The rear side of the carrier plate (2) is rotatably connected to a support frame (3) that cooperates with the base plate (1) to support the carrier plate (2) and the backlight. The base plate (1) is connected to an adjustment mechanism that cooperates with the support frame (3) to adjust the tilt state of the carrier plate (2). The bottom of the carrier plate (2) is connected to a support plate (6), and a lighting electrode (9) for backlight detection is installed on the support plate (6). The lighting electrode (9) is electrically connected to the corresponding gold finger connector on the backlight, so that the backlight can be tested to detect whether there is a white spot defect after it is lit. The support plate (6) is equipped with a positioning component that can select the position of the backlight and the electrode (9) to be electrically connected by moving the electrode (9).

2. The positioning fixture for backlight detection according to claim 1, characterized in that: The adjustment mechanism includes several slots (4) evenly arranged on the top of the base plate (1). The bottom end of the support frame (3) is arc-shaped and is embedded in the slots (4) through the bottom end, so that the position state between the carrier plate (2) and the base plate (1) is fixed.

3. The positioning fixture for backlight detection according to claim 1, characterized in that: The positioning component includes a slider (8) for mounting the lighting electrode (9), and a groove (7) is provided on the support plate (6) for the slider (8) to be embedded therein and held in sliding connection on the support plate (6). A drive mechanism is jointly installed between the support plate (6) and the slider (8) to cause the slider (8) to move within the groove (7) carrying the lighting electrode (9).

4. The positioning fixture for backlight detection according to claim 3, characterized in that: The driving mechanism includes a support column (14) rotatably connected to the bottom of both ends of the support plate (6). The top and bottom of the support column (14) are respectively connected to a handle (16) and a groove (15). The support plate (6) is connected to a support block (13) above the support column (14). The two ends of the slider (8) are rotatably connected to a support shaft (10). A pulley (11) is installed on the support shaft (10). A tensioned traction rope (12) is connected between the support blocks (13). The end of the traction rope (12) is led out from the side of the support blocks (13) that are close to each other, and extends around the side of the pulley (11) that is close to each other and the side of the groove (15) that is far away from each other.

5. A positioning fixture for backlight detection according to claim 4, characterized in that: The traction rope (12) is made of a material with high friction resistance. Through the friction resistance between the rope and the pulley (11), the groove (15) of the support column (14), the support column (14), and the support shaft (10), the slider (8) carries the lighting electrode (9) and moves in the groove (7).

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