CN201331909Y - Heating control system of liquid crystal display - Google Patents
Heating control system of liquid crystal display Download PDFInfo
- Publication number
- CN201331909Y CN201331909Y CNU200920018270XU CN200920018270U CN201331909Y CN 201331909 Y CN201331909 Y CN 201331909Y CN U200920018270X U CNU200920018270X U CN U200920018270XU CN 200920018270 U CN200920018270 U CN 200920018270U CN 201331909 Y CN201331909 Y CN 201331909Y
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- control system
- temperature control
- display
- heating
- liquid crystal
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Abstract
The utility model provides a heating control system of liquid crystal display, wherein, a temperature control system connects with a heating system, an electrical power supply system and a display system respectively. Compared with the prior art, the system makes liquid crystal screen with normal temperature working in low environment normally, the heating system and the display system share a 12V electrical power source which can save manufacturing cost, increase electrical source use ratio and save precious body case space, thereby, has perfect use value.
Description
1, technical field
The utility model relates to a kind of control system, and specifically a kind of LCD adds temperature control system.
2, background technology
The normal temperature LCD has when low temperature and to show the phenomenon that lags behind, as 0 ℃ the time, about hysteresis 0.5s; In the time of-10 ℃, about hysteresis 1.5s, below-20 ℃ the time, with regard to cisco unity malfunction.In order to make the normal temperature LCD can operate as normal under the cryogenic conditions, at the liquid crystal display back side heating film be set usually in the open air.This heating mode need use the dual power supply module usually, and wherein 12V powers to display system, and 24V powers to heating system, and needs the double switch circuit.
The drawback that this kind heating mode exists is: (1), dual power supply module cost an arm and a leg, and it is big to take up room; (2), because heat power supply and display power supply are not worked simultaneously, system adopts dual power supply work to cause the power utilization rate low, the production cost height; (3), total system needs double switch, heat switch and display switch all needs user's manual unlocking, inconvenient operation, the hidden danger that has maloperation, promptly under low temperature environment, liquid crystal display is not heated and just open display system, the operation meeting causes to a certain degree damage to display element like this, influences the serviceability of display.
3, summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of low-cost while to add temperature control system in the LCD of operate as normal under the low temperature environment.
The technical solution of the utility model realizes that in the following manner its structure is made of temperature control system, heating system, electric power system and display system, and temperature control system is connected with heating system, electric power system and display system respectively.
Above-mentioned temperature control system is connected to form successively by relay, single-chip microcomputer and temperature sensor.
Above-mentioned heating system is set to high-power heating film.
Above-mentioned electric power system is connected to form successively by power input interface, protective tube, wave filter and power module.
Above-mentioned display system is formed by connecting with OSD plate, backlight and liquid crystal display respectively by the VGA plate.
The utility model has the advantages that:
LCD of the present utility model adds temperature control system to be compared with prior art, only adopts a 12V power module power supply, utilizes the liquid crystal display ambient temperature of single-chip microcomputer reading temperature sensor induction, can be according to the temperature control display work of reading.
It has (1), make the normal temperature liquid crystal display can be in operate as normal under the low temperature environment; (2), heating system and the shared 12V power supply of display system, so both saved production cost, improved the power utilization rate, saved valuable enclosure space again; (3), temperature control system control heating system and display system work, avoided the generation of maloperation under low temperature environment; (4), total system adopts uses the same with regular display of switch, is easy to user's operation.
4, description of drawings
Fig. 1 adds the structural representation of temperature control system for LCD;
Fig. 2 is the system operation process flow diagram;
Mark in the accompanying drawing is represented respectively; 1, temperature control system; 2, heating system; 3, electric power system; 4, display system; 5, relay; 6, single-chip microcomputer; 7, temperature sensor; 8, power input interface; 9, protective tube; 10, wave filter; 11, power module; 12, VGA plate; 13, OSD plate; 14, backlight; 15, liquid crystal display.
5, embodiment
Below in conjunction with accompanying drawing LCD of the present utility model is added temperature control system and do following detailed description the in detail.
As shown in Figure 1, LCD of the present utility model adds its structure of temperature control system and is made of temperature control system 1, heating system 2, electric power system 3 and display system 4, and temperature control system 1 is connected with heating system 2, electric power system 3 and display system 4 respectively.
As shown in Figure 2, in the system work process, by temperature control system 1 control heating system 2 and display system 4 work, single-chip microcomputer 6 determines whether to open heating system 2 earlier by the liquid crystal display ambient temperature of read sensor induction, if current liquid crystal display ambient temperature is lower than the temperature value of setting, (pilot lamp is for red then to open heating system, display system is not worked), single-chip microcomputer 6 cuts out heating system 2 automatically after the temperature that is warmed to setting, opens display system 4 (pilot lamp becomes green) simultaneously.If current liquid crystal display ambient temperature is higher than the temperature value of setting, then skips heating system 2 and directly open display system 4 (pilot lamp is for green, and heating system is not worked).Realize that by the way the normal temperature LCD works in low temperature environment, because heating system 2 and display system 4 are not worked simultaneously in total system, so they can a shared 12V power supply, the utilization factor of power supply can be improved like this, and space in production cost and the display casing can also be saved.
Experimental results show that: under-20 ℃ condition, only need heating 2～5min display to get final product operate as normal.LCD low temperature display control program of the present utility model is simple, can guarantee normal temperature LCD operate as normal under-25 ℃ condition.The LCD operating temperature range is-25～55 ℃, satisfies the requirement of continual and steady work under cryogenic conditions fully.
Claims (5)
1, LCD adds temperature control system, it is characterized in that being made of temperature control system, heating system, electric power system and display system, and temperature control system is connected with heating system, electric power system and display system respectively.
2, LCD according to claim 1 adds temperature control system, it is characterized in that temperature control system is connected to form successively by relay, single-chip microcomputer and temperature sensor.
3, LCD according to claim 1 adds temperature control system, it is characterized in that heating system is set to high-power heating film.
4, LCD according to claim 1 adds temperature control system, it is characterized in that electric power system is connected to form successively by power input interface, protective tube, wave filter and power module.
5, LCD according to claim 1 adds temperature control system, it is characterized in that display system is formed by connecting with OSD plate, backlight and liquid crystal display respectively by the VGA plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920018270XU CN201331909Y (en) | 2009-01-21 | 2009-01-21 | Heating control system of liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920018270XU CN201331909Y (en) | 2009-01-21 | 2009-01-21 | Heating control system of liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331909Y true CN201331909Y (en) | 2009-10-21 |
Family
ID=41225291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920018270XU Expired - Fee Related CN201331909Y (en) | 2009-01-21 | 2009-01-21 | Heating control system of liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201331909Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662266A (en) * | 2012-05-22 | 2012-09-12 | 航天科技控股集团股份有限公司 | Liquid crystal screen heating controller and heating method |
| CN103412426A (en) * | 2013-07-26 | 2013-11-27 | 北京京东方光电科技有限公司 | Liquid crystal display (LCD) |
| WO2020010698A1 (en) * | 2018-07-09 | 2020-01-16 | 深圳市华星光电半导体显示技术有限公司 | Start-up control method for liquid crystal display device, and liquid crystal display device |
-
2009
- 2009-01-21 CN CNU200920018270XU patent/CN201331909Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662266A (en) * | 2012-05-22 | 2012-09-12 | 航天科技控股集团股份有限公司 | Liquid crystal screen heating controller and heating method |
| CN103412426A (en) * | 2013-07-26 | 2013-11-27 | 北京京东方光电科技有限公司 | Liquid crystal display (LCD) |
| CN103412426B (en) * | 2013-07-26 | 2015-09-09 | 北京京东方光电科技有限公司 | A kind of liquid crystal display |
| WO2020010698A1 (en) * | 2018-07-09 | 2020-01-16 | 深圳市华星光电半导体显示技术有限公司 | Start-up control method for liquid crystal display device, and liquid crystal display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20110121 |