CN201222341Y - Drive device for liquid crystal display board under ultra low temperature environment - Google Patents
Drive device for liquid crystal display board under ultra low temperature environment Download PDFInfo
- Publication number
- CN201222341Y CN201222341Y CNU2008200485360U CN200820048536U CN201222341Y CN 201222341 Y CN201222341 Y CN 201222341Y CN U2008200485360 U CNU2008200485360 U CN U2008200485360U CN 200820048536 U CN200820048536 U CN 200820048536U CN 201222341 Y CN201222341 Y CN 201222341Y
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- Prior art keywords
- temperature
- liquid crystal
- crystal display
- controller
- well heater
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Abstract
The utility model discloses the technical field of the driving devices of a liquid crystal display panel, in particular to the driving device of a liquid crystal display panel under ultra-low environment. The driving device comprises a heater which is arranged on the opposite side of the liquid crystal display panel and a controller which is used to drive a heater, wherein the output end of the controller is connected with the input end of the heater, and when the environment in which the liquid crystal panel is placed is lower than the temperature which is preset by the controller, the controller can drive the heater to heat the liquid crystal display panel, and leads the liquid crystal display panel to keep a proper temperature, thereby guaranteeing the liquid crystal panel to normally work, and therefore, the driving device has simple structure and reasonable design, which can guarantee the liquid crystal panel to normally work under ultra-low temperature environment.
Description
Technical field:
The utility model relates to the technical field of driving of display panels, relates in particular to a kind of drive unit of liquid crystal display panel in ultra-low-temperature environment.
Background technology:
LCD has been widely used on the display devices such as various portable type electronic product, transport facility because volume is little, low in energy consumption.Wherein, LCD mainly comprises display panels, and display panels is the double glazing base board unit of being fitted and being formed by two sheet glass base plate alignments, and the gap is also left to inject liquid crystal in the centre.Yet, in actual applications, be in when display panels under the environment of ultralow temperature, as extraordinary field work (geological mapping, the outdoor plan machine in oil field, wind-power electricity generation), military use (aircraft, battlebus, monitoring, army's boat), liquid crystal can be transformed into solid-state and can't reverse according to the variation of electric field, causes the LCD can't normal operation.The minimum serviceability temperature of available liquid crystal display panel only is negative 20 ℃, and the environment that obviously is not suitable for above-mentioned ultralow temperature uses down.
The utility model content:
The purpose of this utility model is exactly the drive unit that a kind of liquid crystal display panel in ultra-low-temperature environment is provided at the deficiency of prior art existence.
To achieve these goals, the technical solution adopted in the utility model is:
It comprises the well heater that is arranged on the display panels back side, the controller that is used to drive well heater, and the output terminal of controller is connected with the input end of well heater.
Wherein, described controller comprises the temperature-sensing element (device) that is used for the acquisition environment temperature, be used to set and VGA (the Video Graphics Array of input parameter, Video Graphics Array) display board, temperature-control circuit, be the power module of temperature-control circuit power supply, temperature-sensing element (device) is connected with the input end of temperature-control circuit, the output terminal of VGA display board is connected with the input end of temperature-control circuit, and power module is connected with the power input of temperature-control circuit; The input end of described well heater is connected with the output terminal of temperature-control circuit.
Wherein, described controller also can be automatic temperature switch.
Wherein, described well heater is an electric heating film.
The utility model beneficial effect is:
The drive unit of a kind of liquid crystal display panel in ultra-low-temperature environment that the utility model provides comprises the well heater that is arranged on the display panels back side, the controller that is used to drive well heater, the output terminal of controller is connected with the input end of well heater, when the residing environment temperature of display panels is lower than the predefined temperature of controller, controller can drive well heater display panels is heated, make display panels keep suitable temperature, thereby guarantee the operate as normal of display panels.Therefore, the utility model simple in structure, reasonable in design, can guarantee display panels operate as normal still under ultra-low temperature surroundings.
Description of drawings:
Fig. 1 is the frame principle figure of the utility model embodiment one;
Fig. 2 is the frame principle figure of the utility model embodiment two;
Fig. 3 is that the utility model is installed in the structural representation on the display panels.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described, see shown in Figure 1, this is embodiment one of the present utility model, it comprises the well heater 2 that is arranged on display panels 1 back side, the controller 3 that is used to drive well heater 2, the output terminal of controller 3 is connected with the input end of well heater 2, and more particularly, described well heater 2 is an electric heating film, can convert electrical energy into heat energy, it closely is fixed on the back side of display panels 1; Wherein, described controller 3 comprises the temperature-sensing element (device) 31 that is used for the acquisition environment temperature, be used to set and the VGA display board 32 of input parameter, temperature-control circuit 33, be the power module 34 of temperature-control circuit 33 power supplies, temperature-sensing element (device) 31 is connected with the input end of temperature-control circuit 33, the output terminal of VGA display board 32 is connected with the input end of temperature-control circuit 33, and power module 34 is connected with the power input of temperature-control circuit 33; The input end of described well heater 2 is connected with the output terminal of temperature-control circuit 33.
When the temperature-sensing element (device) 31 of controller 3 detects display panels 1 residing environment temperature and is lower than temperature-control circuit 33 predefined temperature, temperature-control circuit 33 can heat according to 2 pairs of display panels 1 of predefined driven by program well heater, make display panels 1 keep suitable temperature, thereby guarantee display panels 1 operate as normal still under ultra-low temperature surroundings.
See shown in Figure 2, this is embodiment two of the present utility model, it comprises the well heater 2 that is arranged on display panels 1 back side, the controller 3 that is used to drive well heater 2, the output terminal of controller 3 is connected with the input end of well heater 2, more particularly, described well heater 2 is an electric heating film, can convert electrical energy into heat energy, and it closely is fixed on the back side of display panels 1; Wherein, described controller 3 is an automatic temperature switch, it is provided with a temperature fixed value, when it is in environment temperature and is lower than this fixed value, can connect switch automatically, drive 2 pairs of display panels 1 of well heater and heat, make display panels 1 keep suitable temperature, thereby guarantee display panels 1 operate as normal still under ultra-low temperature surroundings; When it is in environment temperature and is higher than this fixed value, can cut off switch automatically, stop to drive well heater 2.
Please refer to Fig. 3, this is that the utility model is installed in the structural representation on the display panels 1, in order can under ultra-low temperature surroundings, to heat timely to display panels 1, well heater 2 of the present utility model closely is fixed on the back side of display panels 1, the utility model makes LCD can be applicable to the environment of ultralow temperature such as extraordinary field work (geological mapping, the outdoor plan machine in oil field, wind-power electricity generation), military use (aircraft, battlebus, monitoring, army's boat), fuel charger, cash dispenser in negative 55 ℃ of storages down, negative 45 ℃ of work down.
Certainly, the above only is preferred embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (4)
1, the drive unit of liquid crystal display panel in ultra-low-temperature environment, it is characterized in that: it comprises the well heater (2) that is arranged on display panels (1) back side, the controller (3) that is used to drive well heater (2), and the output terminal of controller (3) is connected with the input end of well heater (2).
2, the drive unit of liquid crystal display panel in ultra-low-temperature environment according to claim 1, it is characterized in that: described controller (3) comprises the temperature-sensing element (device) (31) that is used for the acquisition environment temperature, be used to set the also VGA display board (32) of input parameter, temperature-control circuit (33), power module (34) for temperature-control circuit (33) power supply, temperature-sensing element (device) (31) is connected with the input end of temperature-control circuit (33), the output terminal of VGA display board (32) is connected with the input end of temperature-control circuit (33), and power module (34) is connected with the power input of temperature-control circuit (33); The input end of described well heater (2) is connected with the output terminal of temperature-control circuit (33).
3, the drive unit of liquid crystal display panel in ultra-low-temperature environment according to claim 1 is characterized in that: described controller (3) is an automatic temperature switch.
4, according to the drive unit of any described liquid crystal display panel in ultra-low-temperature environment of claim 1 to 3, it is characterized in that: described well heater (2) is an electric heating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200485360U CN201222341Y (en) | 2008-05-30 | 2008-05-30 | Drive device for liquid crystal display board under ultra low temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200485360U CN201222341Y (en) | 2008-05-30 | 2008-05-30 | Drive device for liquid crystal display board under ultra low temperature environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201222341Y true CN201222341Y (en) | 2009-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200485360U Expired - Fee Related CN201222341Y (en) | 2008-05-30 | 2008-05-30 | Drive device for liquid crystal display board under ultra low temperature environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201222341Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995688B (en) * | 2009-08-27 | 2012-12-19 | 厦门立林科技有限公司 | Monochrome liquid crystal display module capable of working at low temperature |
| CN105892128A (en) * | 2016-06-15 | 2016-08-24 | 苏州众显电子科技有限公司 | Driving device of liquid crystal display panel under ultralow-temperature environment |
-
2008
- 2008-05-30 CN CNU2008200485360U patent/CN201222341Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995688B (en) * | 2009-08-27 | 2012-12-19 | 厦门立林科技有限公司 | Monochrome liquid crystal display module capable of working at low temperature |
| CN105892128A (en) * | 2016-06-15 | 2016-08-24 | 苏州众显电子科技有限公司 | Driving device of liquid crystal display panel under ultralow-temperature environment |
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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: 20090415 Termination date: 20120530 |