CN201281928Y - Thin-film transistor liquid crystal display for car - Google Patents
Thin-film transistor liquid crystal display for car Download PDFInfo
- Publication number
- CN201281928Y CN201281928Y CNU2008201854112U CN200820185411U CN201281928Y CN 201281928 Y CN201281928 Y CN 201281928Y CN U2008201854112 U CNU2008201854112 U CN U2008201854112U CN 200820185411 U CN200820185411 U CN 200820185411U CN 201281928 Y CN201281928 Y CN 201281928Y
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- China
- Prior art keywords
- brightness
- signal
- backlight
- display screen
- backlight drive
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- Expired - Lifetime
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- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model discloses a thin film transistor liquid-crystal display used for a vehicle, which comprises a display screen, a backlight source used for providing brightness for the display screen and improving the color gamut and a brightness automatic control device used for controlling the brightness of the backlight source according to the collected light intensity signal, wherein, the brightness automatic control device comprises a backlight driving device, a photosensitive sensor connected in a backlight driving circuit and used for collecting optical signals in the external environment, a signal transformation device connected with the photosensitive sensor and used for transforming the optical signals into electric signals; and a signal analysis and processing device used for analyzing the electric signals and calculating the current or the voltage regulation value of the backlight source driving device. The display can automatically sense the brightness of the external light and further control the brightness of the display screen so as to achieve the optimum effect received by the human eyes, enable the displayed image effect to be clearer, and reduce the visual fatigue of the drivers as well as the traffic accidents.
Description
Technical field
The utility model relates to a kind of LCD, particularly is applied in the Thin Film Transistor-LCD on the automobile.
Background technology
At present, motor vehicle such as automobile all is fitted with rearview mirror.But the visual field of rearview mirror is less, can not see the obstacle that tailstock boot is following, there is certain hidden danger during reversing, therefore on the back minute surface (being the lateral surface of back glass sheet) of rearview mirror, drive a square frame usually, a LCD (also claiming display screen) is set at the square frame place shows the situation below the tailstock boot, the area of LCD is generally about 1/3 (not influencing the picture on the rearview mirror) of rearview mirror area, and LCD can be arranged on left side, rear side or the left and right sides center position of the preceding minute surface of rearview mirror.But, in the prior art,, can not regulate the brightness of display screen self automatically according to concrete ambient brightness because the backlight of display has only manual adjustments brightness mode and constant brightness display mode in the prior art.And vehicle in the process of moving, and light intensity is among the variation always in the residing environment of vehicle, and the light intensity of backlight also changes.Because the sensitometric characteristic of human eye, the display of same contrast and brightness, in the environment of high light and dark, the effect of the display screen that human eye is watched there are differences, watch display for a long time in the environment that light intensity changes, the picture effect of not only seeing is had a greatly reduced quality, and not only damages driver's eyesight, but also can influence driver drives vehicle the time to the judgement of environment, serious also can cause traffic hazard.Operating inconvenience on the one hand by the manual adjustments brightness of display screen, then is the demonstration restriction that is subjected to high-high brightness and minimum brightness on the other hand.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of automobile Thin Film Transistor-LCD that can regulate its brightness according to ambient brightness automatically.
In order to solve above technical matters, the utility model adopts following technical scheme:
A kind of automobile Thin Film Transistor-LCD, the backlight that comprises display screen, is used to supply with described brightness of display screen and improves colour gamut, particularly, it also comprises the ABC device that is used for regulating according to the light intensity signal that collects the brightness of backlight, and this ABC device comprises:
Backlight drive device is connected to form the backlight drive loop with described backlight;
Light sensor is connected the light signal that is used for gathering external environment in the described backlight drive loop;
Chromacoder is connected with described light sensor, is used for light signal is converted to electric signal;
The signal analysis and processing device, be connected with the backlight drive loop with described chromacoder, be used for electric signal is analyzed and calculated the curtage regulated value of backlight driving device, then with the signal conveys of this curtage regulated value to the backlight drive loop.
As further embodiment of the present utility model, described signal analysis and processing device is connected with light sensor, the signal of the curtage regulated value of described backlight driving device is transferred to light sensor, and this light sensor is transferred to backlight drive device after signal is handled.
Described display screen is arranged on the back minute surface of rearview mirror of automobile.
Because the application of technique scheme, the utility model has following advantage compared to existing technology:
Thereby ABC device of the present utility model can be responded to the brightness that display screen is regulated in the brightness of extraneous light automatically, reach the receptible optimum efficiency of human eye with this, make the image effect of demonstration more clear, reduce driver's visual fatigue, reduce the generation of traffic hazard.
Description of drawings
The utility model is described in more detail below in conjunction with accompanying drawing and concrete embodiment:
Fig. 1 is the structural representation of ABC device of the present utility model;
Wherein:
1, backlight; 2, backlight drive device; 3, backlight drive loop; 4, light sensor; 5, chromacoder; 6, signal analysis and processing device.
Embodiment
As shown in Figure 1, mainly be mounted on the back minute surface of automobile rearview mirror with Thin Film Transistor-LCD, be used for showing the situation that tailstock boot is following according to the automobile of present embodiment.The ABC device that display mainly comprises the display screen (not shown), is used to the backlight 1 of supplying with brightness of display screen and improving colour gamut and is used for regulating according to the light intensity signal that collects the brightness of backlight 1.Thereby the ABC device can be responded to the brightness that display screen is regulated in the brightness of extraneous light automatically, reaches the receptible optimum efficiency of human eye with this, makes the image effect of demonstration more clear, reduces driver's visual fatigue, reduces the generation of traffic hazard.Below ABC device of the present utility model is elaborated.
The ABC device mainly comprises backlight drive device 2, light sensor 4, chromacoder 5 and signal analysis and processing device 6.Wherein, backlight drive device 2, light sensor 4 have constituted backlight drive loop 3 with backlight 1.The principle of work of this ABC device is as follows:
Light sensor 4 light source in the environment is to external world gathered, be delivered to signal analysis and processing device 6 after will the light signal that collect being converted into electric signal by chromacoder 5, the parameter that signal analysis and processing device 6 is set the signal that receives and internal processes is analyzed, calculate the voltage-regulation value of backlight drive device 2, then this voltage-regulation value is delivered to light sensor 4 in the backlight drive loop 3 by chromacoder 5, light sensor 4 is made the order of whether regulating backlight illumination, and corresponding signal sent to backlight drive device 2, change the voltage of backlight drive device 2, thereby regulate the brightness of backlight 1.
The foregoing description only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this art can understand content of the present invention and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to spirit of the present utility model change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (3)
1, a kind of automobile Thin Film Transistor-LCD, comprise display screen, be used to the backlight (1) supplying with described brightness of display screen and improve colour gamut, it is characterized in that: it also comprises the ABC device that is used for regulating according to the light intensity signal that collects the brightness of described backlight (1), and this ABC device comprises:
Backlight drive device (2) is connected to form backlight drive loop (3) with described backlight (1);
Light sensor (4) is connected the light signal that is used for gathering external environment in the described backlight drive loop (3);
Chromacoder (5) is connected with described light sensor (4), is used for described light signal is converted to electric signal;
Signal analysis and processing device (6), be connected with described backlight drive loop (3) with described chromacoder (5), be used for described electric signal is analyzed and calculated the curtage regulated value of described backlight drive device (2), then described curtage regulated value be delivered in the backlight drive loop (3).
2, automobile Thin Film Transistor-LCD according to claim 1, it is characterized in that: described signal analysis and processing device (6) is connected with described light sensor (4), the signal of the curtage regulated value of described backlight drive device (2) is transferred to described light sensor (4), is transferred to described backlight drive device (2) after this light sensor (4) is handled signal.
3, automobile Thin Film Transistor-LCD according to claim 1 is characterized in that: described display screen is arranged on the back minute surface of rearview mirror of automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201854112U CN201281928Y (en) | 2008-09-04 | 2008-09-04 | Thin-film transistor liquid crystal display for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201854112U CN201281928Y (en) | 2008-09-04 | 2008-09-04 | Thin-film transistor liquid crystal display for car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201281928Y true CN201281928Y (en) | 2009-07-29 |
Family
ID=40928796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201854112U Expired - Lifetime CN201281928Y (en) | 2008-09-04 | 2008-09-04 | Thin-film transistor liquid crystal display for car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201281928Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625397A (en) * | 2012-08-27 | 2014-03-12 | 株式会社万都 | System for recognizing surroundings of vehicle |
| CN105073499A (en) * | 2013-03-29 | 2015-11-18 | 爱信精机株式会社 | Image display control device, image display system, and display unit |
-
2008
- 2008-09-04 CN CNU2008201854112U patent/CN201281928Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625397A (en) * | 2012-08-27 | 2014-03-12 | 株式会社万都 | System for recognizing surroundings of vehicle |
| CN105073499A (en) * | 2013-03-29 | 2015-11-18 | 爱信精机株式会社 | Image display control device, image display system, and display unit |
| CN105073499B (en) * | 2013-03-29 | 2018-01-05 | 爱信精机株式会社 | Image display control apparatus, image display system and display unit |
| US10112539B2 (en) | 2013-03-29 | 2018-10-30 | Aisin Seiki Kabushiki Kaisha | Image display control apparatus, image display system and display unit for displaying rear-view image based on eye point of a driver or angle of a display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090729 |
|
| CX01 | Expiry of patent term |