CN220509241U - Light leakage testing device for liquid crystal display backboard - Google Patents
Light leakage testing device for liquid crystal display backboard Download PDFInfo
- Publication number
- CN220509241U CN220509241U CN202322200023.4U CN202322200023U CN220509241U CN 220509241 U CN220509241 U CN 220509241U CN 202322200023 U CN202322200023 U CN 202322200023U CN 220509241 U CN220509241 U CN 220509241U
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- liquid crystal
- crystal display
- light leakage
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- disc
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 239000000523 sample Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Liquid Crystal (AREA)
Abstract
The utility model relates to the technical field of television manufacturing, in particular to a liquid crystal display backboard light leakage testing device; the intelligent electric meter comprises a workbench, a support, vertical rods, a disc, a curtain, a cross, four photosensitive probes, four voltage conversion circuits and four ampere meters or voltage meters, wherein the support is arranged on one side of the workbench, the vertical rods are downwards arranged on the upper parts of the support, the disc is sleeved on the vertical rods through sliding sleeves, the curtain is arranged on the periphery of the disc, the cross is welded at the bottom ends of the vertical rods, the length of the cross is smaller than the diameter of the disc, the photosensitive probes are arranged at the bottom of each end of the cross, a first panel and a second panel are arranged at the top of the support, the four voltage conversion circuits are arranged on the first panel, and the four ampere meters or the voltage meters are arranged on the second panel; the light leakage degree at the four edges of the liquid crystal display backboard is checked through the four photosensitive probes, and the light leakage degree is visually displayed in a numerical mode through the voltage conversion circuit and the voltmeter or the ammeter.
Description
Technical Field
The utility model relates to the technical field of television manufacturing, in particular to a liquid crystal display backboard light leakage testing device.
Background
The LCD has light leakage defect widely, so that the manufacturer of TV set must test the light leakage of the product and the defective products need to be overhauled. The existing light leakage test mainly adopts two modes, namely, a test device for detecting light leakage by naked eyes by using auxiliary equipment such as a reflector and the like, for example, a display screen test light leakage test device disclosed in China patent publication, and a patent number 202021788029.8; another is to use a camera to detect with a complex clamping mold, such as the LCD light leakage test device disclosed in chinese patent No. 202022219696.0.
In the prior art, the first mode has larger manual detection error; the second mode has very complex structure, and the camera detection needs to introduce high-cost technologies such as a visual detection system, a machine learning system and the like, so that the production cost is greatly increased.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a liquid crystal display backboard light leakage testing device which has the advantages of simple structure, accurate result and the like.
The technical scheme of the utility model is as follows:
the utility model provides a liquid crystal display backplate light leak testing arrangement, comprises a workbench, a support, the montant, the disc, the curtain, the cross, four photosensitive probes, four voltage conversion circuits and four ampere meters or voltmeter, workstation one side is provided with the support, a montant is installed down on support upper portion, the montant has cup jointed a disc through the sliding sleeve, the disc periphery is provided with the curtain, a cross has been welded to montant bottom, the length of cross is less than the disc diameter, photosensitive probes is all installed to each end bottom of cross, first panel and second panel are installed at the support top, install four voltage conversion circuits on the first panel, install four ampere meters or voltmeters on the second panel.
Further, the bottom of the workbench is provided with the support legs, so that workers can stand near the workbench to operate conveniently.
Further, the workbench is provided with a rectangular groove for placing the liquid crystal display backboard in a concave mode corresponding to the cross, and the liquid crystal display backboard is prevented from being placed away from the target position.
Further, through holes are formed in the workbench corresponding to the rectangular grooves, so that the power line and the data line of the liquid crystal display backboard are conveniently connected externally.
Further, the curtain bottom is provided with the silica gel strip, and silica gel can closely pressfitting self on the workstation mesa through dead weight or workman's pressure, avoids leaving the clearance between curtain and the workstation.
The beneficial effects of the utility model are as follows: the utility model has the advantages of simple structure, simple detection operation and more accurate detection result. Four sides are tested simultaneously, so that time and labor are saved, and the light leakage condition of each side is accurately sensed.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure, 1, supporting legs; 2. a work table; 3. rectangular grooves; 4. a through hole; 5. a bracket; 6. a sliding sleeve; 7. a disc; 8. a curtain; 9. a silica gel strip; 10. a vertical rod; 11. a cross; 12. a photosensitive probe; 13. a first panel; 14. a voltage conversion circuit; 15. a second panel; 16. an ammeter.
Detailed Description
The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:
example 1
As shown in FIG. 1, the liquid crystal display backboard light leakage testing device comprises a workbench 2, a support 5, a vertical rod 10, a disc 7, a curtain 8, a cross 11, four photosensitive probes 12, four voltage conversion circuits 14 and four ampere meters 16, wherein the support 5 is arranged on one side of the workbench 2, the vertical rod 10 is installed on the upper portion of the support 5 downwards, the vertical rod 10 is sleeved with the disc 7 through a sliding sleeve 6, the curtain 8 is arranged on the periphery of the disc 7, the cross 11 is welded at the bottom end of the vertical rod 10, the length of the cross 11 is smaller than the diameter of the disc 7, the photosensitive probes 12 are installed at the bottom of each end of the cross 11, a first panel 13 and a second panel 15 are installed at the top of the support 5, four voltage conversion circuits 14 are installed on the first panel 13, and four ampere meters 16 are installed on the second panel 15.
The bottom of the workbench 2 is provided with support legs 1, the workbench 2 is provided with rectangular grooves 3 for placing a liquid crystal display backboard in a concave mode corresponding to the cross 11, the workbench 2 is provided with through holes 4 corresponding to the rectangular grooves 3, and the bottom of the curtain 8 is provided with silica gel strips 9.
The application method of the embodiment comprises the following steps:
1) Lifting the disc to ensure that the curtain does not influence the in-out of the liquid crystal display backboard;
2) Placing the liquid crystal display backboard into the rectangular groove, paying attention to the display surface to be upward, enabling the data line and the power line to pass through the through hole and externally connecting with a host, starting the liquid crystal display backboard and playing a pure black picture;
3) The disc is put down until the disc is propped against by the cross, and the rectangular groove is completely covered by the cylindrical curtain;
4) At this time, the four photosensitive probes are just positioned on the four sides of the liquid crystal display backboard, light leakage of the liquid crystal display backboard is received through the photosensitive probes, and each photosensitive probe generates certain voltage change according to the received illumination degree;
5) The voltage conversion circuit converts the voltage change generated by the photosensitive probe into current and flows to the ammeter, the current meter is finally displayed as a numerical value readable by naked eyes, and a worker judges whether the light leakage degree is qualified or not according to the numerical values of four sides (a product which is manually detected to be qualified can be firstly tested to be used as a reference value).
Example 2
The present embodiment uses a voltmeter instead of an ammeter. Although the voltage conversion circuit has converted the voltage variation generated by the light leakage into current, obviously, the voltage magnitude generated by the detection of the current by the voltmeter can be positively correlated with the intensity of the light leakage (a product which is manually detected as qualified can be firstly tested as a reference value), so the voltage conversion circuit can be used as a basis for judging whether the light leakage degree is qualified or not.
The foregoing embodiments and description have been provided merely to illustrate the principles and best modes of carrying out the utility model, and various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (5)
1. The utility model provides a liquid crystal display backplate light leak testing arrangement, a serial communication port, the on-line screen storage device comprises a workbench, a support, the montant, the disc, the curtain, the cross, four photosensitive probes, four voltage conversion circuits and four ampere meters or voltmeters, workstation one side is provided with the support, a montant is installed down on support upper portion, the montant has cup jointed a disc through the sliding sleeve, the disc periphery is provided with the curtain, the welding of montant bottom has a cross, the length of cross is less than the disc diameter, photosensitive probes is all installed to each end bottom of cross, first panel and second panel are installed at the support top, install four voltage conversion circuits on the first panel, install four ampere meters or voltmeters on the second panel.
2. The liquid crystal display back panel light leakage testing device according to claim 1, wherein: the bottom of the workbench is provided with supporting legs.
3. The liquid crystal display back panel light leakage testing device according to claim 1, wherein: the workbench is provided with a rectangular groove for placing a liquid crystal display backboard in a concave manner corresponding to the cross.
4. The liquid crystal display back panel light leakage testing device according to claim 3, wherein: the workbench is provided with a through hole corresponding to the rectangular groove.
5. The liquid crystal display back panel light leakage testing device according to claim 1, wherein: the curtain bottom is provided with the silica gel strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322200023.4U CN220509241U (en) | 2023-08-16 | 2023-08-16 | Light leakage testing device for liquid crystal display backboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322200023.4U CN220509241U (en) | 2023-08-16 | 2023-08-16 | Light leakage testing device for liquid crystal display backboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220509241U true CN220509241U (en) | 2024-02-20 |
Family
ID=89876861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322200023.4U Active CN220509241U (en) | 2023-08-16 | 2023-08-16 | Light leakage testing device for liquid crystal display backboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220509241U (en) |
-
2023
- 2023-08-16 CN CN202322200023.4U patent/CN220509241U/en active Active
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