CN203787067U - Liquid crystal screen display signal expansion apparatus - Google Patents
Liquid crystal screen display signal expansion apparatus Download PDFInfo
- Publication number
- CN203787067U CN203787067U CN201420192055.2U CN201420192055U CN203787067U CN 203787067 U CN203787067 U CN 203787067U CN 201420192055 U CN201420192055 U CN 201420192055U CN 203787067 U CN203787067 U CN 203787067U
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- China
- Prior art keywords
- signal
- lvds
- liquid crystal
- module
- crystal screen
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- Expired - Lifetime
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 26
- 230000002708 enhancing effect Effects 0.000 claims description 5
- 238000012360 testing method Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000008054 signal transmission Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
Abstract
The utility model belongs to the field of liquid crystal screen tests, and specifically relates to a liquid crystal screen display signal expansion apparatus including a power supply module, an LVDS input interface, a signal expansion module, a signal enhancement module and ten LVDS signal output interfaces. The liquid crystal screen display signal expansion apparatus, according to the liquid crystal screen display signal transmission principle, expands a display signal from an LVDS signal end, realizes a function of expanding one path of LVDS signal input into ten paths of LVDS signals, and realizes display signal expansion and enhancement functions, thereby providing adequate stable enough signal sources for an environment test of the liquid crystal screen display performance. The liquid crystal screen display signal expansion apparatus utilizes an LVDS signal source expansion method and prevents signal quality from being influenced in a VGA-LVDS signal conversion process. Meanwhile, the signal expansion function and the signal enhancement function are integrated on the same module, and thus the quantity of board cards is lowered, the complexity of the system is reduced, and the cost is saved. Furthermore, the quality and quantity of test signals are guaranteed, and the efficiency of the environment test is improved.
Description
Technical field
The utility model belongs to lcd panel test field, is specifically related to a kind of liquid crystal display display one tunnel of having realized and turns the liquid crystal display display expanding unit that multichannel expansion designs.
Background technology
Liquid crystal display is as components and parts or product component, its environmental test is one of of paramount importance inspection item in military project and special application field, along with the development of display technique, liquid crystal display is also more and more extensive in the application in these fields, quantity also thereupon increase sharply, therefore to the measuring technology of liquid crystal display environmental test proposed more reliably, more efficient requirement.
Utility model content
(1) technical matters that will solve
The technical problems to be solved in the utility model is: how not affect on the basis of display transmission quality, solving the few problem of liquid crystal display environmental test process performance test single quantity, improving the efficiency of liquid crystal display environmental test.
(2) technical scheme
For solving the problems of the technologies described above, the utility model provides a kind of liquid crystal display display expanding unit, and it comprises: power module, LVDS input interface, signal extension module, signal strengthen module and 10 road LVDS signal output interfaces;
Described power module comprises: 220V turns 12V circuit and power protecting circuit, and described signal extension module strengthens module with signal and is all connected with power module by 12V power interface;
Described signal extension module comprises: 12V turns 3.3V power-switching circuit, LVDS signal expansion circuit, first signal input interface and first signal output interface; Wherein, described LVDS signal expansion circuit is connected with LVDS input interface by first signal input interface, and is connected by first signal output interface and described signal enhancing module;
Described signal strengthens module and comprises: 12V turns 3.3V power-switching circuit, LVDS signal intensifier circuit, secondary signal input interface and secondary signal output interface; Wherein, described LVDS signal intensifier circuit is connected with described signal extension module by secondary signal input interface, and is connected with described 10 road LVDS signal output interfaces by secondary signal output interface; Each road LVDS signal output interface in described 10 road LVDS signal output interfaces connects respectively tested liquid crystal display.
(3) beneficial effect
Technical solutions of the utility model are started with from most important display, solve the scaling problem of signal in environmental test, are reducing on the basis of testing apparatus volume, improve quality and the quantity of lcd panel test.It is according to the principle of liquid crystal display display transmission, from LVDS signal end expansion display, realize 1 road LVDS signal input, expand to the function of 10 road LVDS signals, and realize display expansion and strengthen function, for the environmental testing of liquid crystal display display performance provides abundant, sufficiently stable signal source.
The utility model has been abandoned traditional VGA signal extension mode, adopt LVDS signal source extended mode, avoid due to the impact on signal quality in VGA-LVDS signal conversion process, signal extension and signal enhancing are integrated in same module simultaneously, save board quantity, reduced the complicacy of system, saved cost, and ensure quality and the quantity of test signal, improved the efficiency of environmental test.
Brief description of the drawings
Fig. 1 is the structural representation of the signal extension device of traditional lcd panel test.Wherein, the liquid crystal display display expanding system that dotted line scope is current widespread use, separately according to practical situations, as is affected by space, quality etc., n <=5 in upper figure.
Fig. 2 is the apparatus structure schematic diagram of technical solutions of the utility model.Wherein, dotted line scope is the liquid crystal display display expanding unit after improving, and it has been integrated into signal extension and signal enhancing function in 1 module, and can expand at most 10 road signals.
Embodiment
For making the purpose of this utility model, content and advantage clearer, below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.
For solving the problem of prior art, the utility model provides a kind of liquid crystal display display expanding unit, and as shown in Figure 2, it comprises: power module, LVDS input interface, signal extension module, signal strengthen module and 10 road LVDS signal output interfaces;
Described power module comprises: 220V turns 12V circuit and power protecting circuit, and described signal extension module strengthens module with signal and is all connected with power module by 12V power interface;
Described signal extension module comprises: 12V turns 3.3V power-switching circuit, LVDS signal expansion circuit, first signal input interface and first signal output interface; Wherein, described LVDS signal expansion circuit is connected with LVDS input interface by first signal input interface, and is connected by first signal output interface and described signal enhancing module;
Described signal strengthens module and comprises: 12V turns 3.3V power-switching circuit, LVDS signal intensifier circuit, secondary signal input interface and secondary signal output interface; Wherein, described LVDS signal intensifier circuit is connected with described signal extension module by secondary signal input interface, and is connected with described 10 road LVDS signal output interfaces by secondary signal output interface; Each road LVDS signal output interface in described 10 road LVDS signal output interfaces connects respectively tested liquid crystal display.
To sum up, technical solutions of the utility model are abandoned VGA signal source extended mode traditional shown in Fig. 1, adopt LVDS signal source extended mode.As shown in Figure 2, single channel LVDS, as input, expands to the identical LVDS signal in 10 tunnels through LVDS expanded circuit, and concrete quantity can increase and decrease according to demand; For the interference of avoiding causing due to transmission cable length or other factors, after every 1 road LVDS signal, design signal intensifier circuit respectively again, to guarantee the stable of display in process of the test; Strengthen 10 road signal through signal and offer tested liquid crystal display by the good device that patches of shielding properties.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and distortion, these improvement and distortion also should be considered as protection domain of the present utility model.
Claims (1)
1. a liquid crystal display display expanding unit, is characterized in that, it comprises: power module, LVDS input interface, signal extension module, signal strengthen module and 10 road LVDS signal output interfaces;
Described power module comprises: 220V turns 12V circuit and power protecting circuit, and described signal extension module strengthens module with signal and is all connected with power module by 12V power interface;
Described signal extension module comprises: 12V turns 3.3V power-switching circuit, LVDS signal expansion circuit, first signal input interface and first signal output interface; Wherein, described LVDS signal expansion circuit is connected with LVDS input interface by first signal input interface, and is connected by first signal output interface and described signal enhancing module;
Described signal strengthens module and comprises: 12V turns 3.3V power-switching circuit, LVDS signal intensifier circuit, secondary signal input interface and secondary signal output interface; Wherein, described LVDS signal intensifier circuit is connected with described signal extension module by secondary signal input interface, and is connected with described 10 road LVDS signal output interfaces by secondary signal output interface;
Each road LVDS signal output interface in described 10 road LVDS signal output interfaces connects respectively tested liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420192055.2U CN203787067U (en) | 2014-04-18 | 2014-04-18 | Liquid crystal screen display signal expansion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420192055.2U CN203787067U (en) | 2014-04-18 | 2014-04-18 | Liquid crystal screen display signal expansion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203787067U true CN203787067U (en) | 2014-08-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420192055.2U Expired - Lifetime CN203787067U (en) | 2014-04-18 | 2014-04-18 | Liquid crystal screen display signal expansion apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN203787067U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730301A (en) * | 2015-04-07 | 2015-06-24 | 京东方科技集团股份有限公司 | Signal source |
| CN106129750A (en) * | 2016-08-26 | 2016-11-16 | 孟玲 | A kind of LED display data line connector |
| CN109168072A (en) * | 2018-09-28 | 2019-01-08 | 天津市英贝特航天科技有限公司 | A kind of LVDS interface expander and its working method |
-
2014
- 2014-04-18 CN CN201420192055.2U patent/CN203787067U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730301A (en) * | 2015-04-07 | 2015-06-24 | 京东方科技集团股份有限公司 | Signal source |
| CN104730301B (en) * | 2015-04-07 | 2017-12-08 | 京东方科技集团股份有限公司 | A kind of signal source |
| US10567750B2 (en) | 2015-04-07 | 2020-02-18 | Boe Technology Group Co., Ltd. | Signal source for electromagnetic interference test of display devices |
| CN106129750A (en) * | 2016-08-26 | 2016-11-16 | 孟玲 | A kind of LED display data line connector |
| CN109168072A (en) * | 2018-09-28 | 2019-01-08 | 天津市英贝特航天科技有限公司 | A kind of LVDS interface expander and its working method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |