CN205485149U - Display screen panel test machine - Google Patents
Display screen panel test machine Download PDFInfo
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- CN205485149U CN205485149U CN201620047284.4U CN201620047284U CN205485149U CN 205485149 U CN205485149 U CN 205485149U CN 201620047284 U CN201620047284 U CN 201620047284U CN 205485149 U CN205485149 U CN 205485149U
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- circuit board
- display screen
- screen panel
- main circuit
- test machine
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Abstract
The utility model discloses a display screen panel test machine, including glass desktop, LED backlight unit, power circuit board, main circuit board, logical dirver circuit board, LED backlight unit installs the bottom surface at the glass desktop, power circuit board includes power unit and contravariant part, the contravariant part is used for conveying the control signal in a poor light of main circuit board output to LED backlight unit, last signal input circuit, video decoding and the AD converting circuit of being provided with of main circuit board, the logic dirver circuit board be connected with the display screen panel that awaits measuring. Placing the display screen panel that awaits measuring on the glass desktop during use, opening the backlight unit of glass desktop bottom, main circuit board becomes output RGB signal with port video decoding, exports logical dirver circuit board to, and logical dirver circuit board becomes the LVDS signal with RGB signal conversion again, exports the display screen panel to, lights the display screen panel, and then test display screen panel problem out of order whether.
Description
Technical field
This utility model relates to a kind of display screen panel test machine.
Background technology
In recent years, LED backlit display was widely used.LED backlit display structure mainly includes front plane frame, panel, glue frame, diaphragm, light guide plate, reflector plate, postnotum, LED lamp bar group.The quality of one display screen first has to see its panel, because the quality of display screen panel directly influences the viewing effect of picture, and display screen panel accounted for complete machine cost more than half, it it is the principal element of the cost affecting display screen, so to select a good display screen, first have to choose its panel.Panel can be divided into A, B, C Three Estate according to quality, its grade distinguishing according to be bad point quantity number.But hard and fast rule the most relevant in the world, so the classification standard in every country area is also not quite similar.Under normal circumstances, the bad point quantity of display screen panel is A level within 5, and bad point quantity just belongs to B level more than 5 less than 10, and bad point quantity then belongs to C level panel more than 10.Therefore, during the manufacturing of display screen, it is necessary to detect display screen panel quality, this utility model is a kind of device can tested display screen panel quality of offer.
Utility model content
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of display screen panel test machine.
This utility model the technical scheme is that for solving its technical problem
A kind of display screen panel test machine, including glass desk-top, LED-backlit module, power supply circuit board, main circuit board, logic drive circuit plate；Described LED-backlit module is arranged on the bottom surface of glass desk-top；Described power supply circuit board includes power pack and Converting Unit, and the input of described power pack connects alternating current power supply, and outfan is connected with main circuit board, is used for exporting unidirectional current to main circuit board；The input of Converting Unit is connected with main circuit board, and outfan is connected with backlight module, for the backlight control signal that main circuit board exports is sent to LED-backlit module；Signal input circuit, video decoding and A/D convertor circuit it is provided with on described main circuit board；The decoding of described video and A/D convertor circuit are connected with logic drive circuit plate, and output rgb signal is to logic drive circuit plate；Described logic drive circuit plate is connected with display screen panel to be measured, is used for exporting LVDS signal to display screen panel.
Further, described main circuit board is additionally provided with keying module.
Further, described main circuit board is additionally provided with remote control reception module.
Further, the power pack of described power supply circuit board is provided with the EMI being sequentially connected with and rectification circuit, PFC control circuit, DC/DC change-over circuit.
Further, the Converting Unit of described power supply circuit board be provided be sequentially connected with backlight controller, exciting circuit, high-pressure forming circuit.
The beneficial effects of the utility model are: a kind of display screen panel test machine that this utility model uses, during use, display screen panel to be measured is placed on glass desk-top, open the LED-backlit module bottom glass desk-top, port video is decoded into output rgb signal by main circuit board, output is to logic drive circuit plate, and rgb signal is converted into LVDS signal by logic drive circuit plate again, and output is to display screen panel, light display screen panel, and then the test the most faulty problem of display screen panel.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is electrical block diagram of the present utility model.
Detailed description of the invention
With reference to Fig. 1, Fig. 2, a kind of display screen panel test machine of the present utility model, including glass desk-top 2, LED-backlit module 3, power supply circuit board, main circuit board, logic drive circuit plate.
Described LED-backlit module 3 is arranged on the bottom surface of glass desk-top 2.
Described power supply circuit board includes power pack and Converting Unit.Described power pack is provided with the EMI being sequentially connected with and rectification circuit, PFC control circuit, DC/DC change-over circuit, the input of described EMI and rectification circuit connects alternating current power supply, by PFC control circuit, DC/DC change-over circuit output unidirectional current to main circuit board, power for main circuit board operating circuit.Converting Unit be provided be sequentially connected with backlight controller, exciting circuit, high-pressure forming circuit, the input of described backlight controller is connected with main circuit board, it is connected with backlight module through exciting circuit, high-pressure forming circuit again, being sent to LED-backlit module 3 for the backlight control signal that main circuit board exports being transformed into the high-voltage signal of approximate sine wave, promoting the lamp luminescence of LED-backlit module 3.
Signal input circuit, video decoding and A/D convertor circuit it is provided with on described main circuit board；The decoding of described video and A/D convertor circuit are connected with logic drive circuit plate, and output rgb signal is to logic drive circuit plate.Described logic drive circuit plate is connected with display screen panel 1 to be measured, is used for exporting LVDS signal to display screen panel 1.
Described main circuit board is additionally provided with keying module and remote control reception module, all can be controlled by keying module or remote controller that main control board signal exports, LED-backlit module 3 switchs and brightness.
During use, display screen panel 1 to be measured is placed on glass desk-top 2, open the LED-backlit module 3 bottom glass desk-top 2, port video is decoded into output rgb signal by main circuit board, output is to logic drive circuit plate, and rgb signal is converted into LVDS signal by logic drive circuit plate again, and output is to display screen panel 1, light display screen panel 1, and then the test the most faulty problem of display screen panel 1.
The above, preferred embodiment the most of the present utility model, this utility model is not limited to above-mentioned embodiment, as long as it reaches technique effect of the present utility model with identical means, all should belong to protection domain of the present utility model.
Claims (5)
1. a display screen panel test machine, it is characterised in that: include glass desk-top, LED-backlit module, power supply circuit board, main circuit board, logic drive circuit plate；Described LED-backlit module is arranged on the bottom surface of glass desk-top；Described power supply circuit board includes power pack and Converting Unit, and the input of described power pack connects alternating current power supply, and outfan is connected with main circuit board, is used for exporting unidirectional current to main circuit board；The input of Converting Unit is connected with main circuit board, and outfan is connected with backlight module, for the backlight control signal that main circuit board exports is sent to LED-backlit module；Signal input circuit, video decoding and A/D convertor circuit it is provided with on described main circuit board；The decoding of described video and A/D convertor circuit are connected with logic drive circuit plate, and output rgb signal is to logic drive circuit plate；Described logic drive circuit plate is connected with display screen panel to be measured, is used for exporting LVDS signal to display screen panel.
A kind of display screen panel test machine the most according to claim 1, it is characterised in that: described main circuit board is additionally provided with keying module.
A kind of display screen panel test machine the most according to claim 1, it is characterised in that: described main circuit board is additionally provided with remote control reception module.
A kind of display screen panel test machine the most according to claim 1, it is characterised in that: the power pack of described power supply circuit board is provided with the EMI being sequentially connected with and rectification circuit, PFC control circuit, DC/DC change-over circuit.
A kind of display screen panel test machine the most according to claim 1, it is characterised in that: the Converting Unit of described power supply circuit board be provided be sequentially connected with backlight controller, exciting circuit, high-pressure forming circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620047284.4U CN205485149U (en) | 2016-01-18 | 2016-01-18 | Display screen panel test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620047284.4U CN205485149U (en) | 2016-01-18 | 2016-01-18 | Display screen panel test machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205485149U true CN205485149U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620047284.4U Active CN205485149U (en) | 2016-01-18 | 2016-01-18 | Display screen panel test machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205485149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467633A (en) * | 2016-01-18 | 2016-04-06 | 江门市唯是半导体科技有限公司 | Display screen panel test machine |
-
2016
- 2016-01-18 CN CN201620047284.4U patent/CN205485149U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467633A (en) * | 2016-01-18 | 2016-04-06 | 江门市唯是半导体科技有限公司 | Display screen panel test machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A display panel tester Effective date of registration: 20221026 Granted publication date: 20160817 Pledgee: Bank of Guangzhou Limited by Share Ltd. Jiangmen branch Pledgor: JIANGMEN WEISHI SEMICONDUCTOR TECHNOLOGY Co.,Ltd. Registration number: Y2022980019704 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |