CN1987565A - Liquid crystal display and its back light brightness regulating method - Google Patents
Liquid crystal display and its back light brightness regulating method Download PDFInfo
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- CN1987565A CN1987565A CN 200510121179 CN200510121179A CN1987565A CN 1987565 A CN1987565 A CN 1987565A CN 200510121179 CN200510121179 CN 200510121179 CN 200510121179 A CN200510121179 A CN 200510121179A CN 1987565 A CN1987565 A CN 1987565A
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- lcd
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Abstract
The liquid crystal display (LCD) device includes a LCD faceplate, a light sensor for sensing light signal of external light, a brightness control circuit (BCC), and a backlight circuit. The LCD faceplate includes a non-display area. The light sensor is setup on the non-display area of the LCD faceplate. Being in use for receiving light signal from the light sensor, BCC converts brightness of the light signal to the control signal. The backlight circuit receives the control signal to adjust brightness of the backlight. Based on change of external brightness, the LCD adjusts brightness of the backlight automatically. The invention also discloses a method for adjusting brightness of the backlight of the LCD device.
Description
[technical field]
The invention relates to a kind of LCD and back light brightness regulating method thereof.
[background technology]
At present, LCD has replaced conventional cathode ray tube (the Cathode Ray Tube that is used for counter gradually, CRT) display, and, because characteristics such as the liquid crystal display utensil is light, thin, little, make its be fit to very much be applied to desktop PC, laptop computer, personal digital assistant (Personal Digital Assistant, PDA), in portable phone, TV and multiple office automation and the audio-visual equipment.
Seeing also Fig. 1, is a kind of synoptic diagram of LCD of prior art exposure.This LCD 100 comprises a driving governor 110, a power supply 150, a data driver that links to each other with this driving governor 110 and this power supply 150 respectively 120, a scanner driver that links to each other with this driving governor 110 and this power supply 150 respectively 130, a display panels 140 that links to each other with this data driver 120 and this scanner driver 130, reaches a backlight circuit 170 that links to each other with this power supply 150.This driving governor 110 is used to control this data driver 120 and this scanner driver 130 is exported a video signal respectively and the one scan signal is given this display panels 140, shows with the image of realizing this display panels 140.This power supply 150 provides electric energy required when driving to this data driver 120, scanner driver 130 and this backlight circuit 170 respectively.
When yet the brightness of these LCD 100 external environments of living in changes, this LCD 100 can not be responded to the brightness variation of external environment and adjust backlight illumination automatically, thereby the phenomenon of visual discomfort will appear in the user when observing display frame under different external environment brightness.
[summary of the invention]
In order to overcome the defective that LCD can not be regulated backlight illumination automatically in the prior art, be necessary to provide a kind of LCD that can regulate backlight illumination automatically.
Also be necessary to provide a kind of above-mentioned backlight liquid crystal display brightness adjusting method.
A kind of LCD, it comprises optical sensor, an intednsity circuit and a backlight circuit of the light signal of a display panels, an induction ambient light.This display panels comprises non-display area, and this optical sensor is arranged on the non-display area of this display panels.This intednsity circuit is used to accept the light signal of this optical sensor, and becomes control signal according to the brightness transition of this light signal.This backlight circuit can be accepted this control signal to regulate backlight illumination.
A kind of above-mentioned backlight liquid crystal display brightness adjusting method, it comprises step: the light signal that utilizes optical sensor induction ambient light; According to light signal, utilize this intednsity circuit to judge brightness of outside light; According to the judged result of intednsity circuit, utilize this backlight circuit to regulate backlight illumination; The adjusting result of backlight circuit is fed back to intednsity circuit.
Compared with prior art, above-mentioned LCD and this backlight liquid crystal display brightness adjusting method adopt the light signal of optical sensor induction ambient light, the brightness that the intednsity circuit of this LCD is backlight according to the automatic brightness adjustment of this light signal, thus vision is more comfortable when the user observes display frame under different external environment brightness.
[description of drawings]
Fig. 1 is the synoptic diagram of the LCD of prior art.
Fig. 2 is the synoptic diagram of LCD of the present invention.
Fig. 3 is the synoptic diagram of the intednsity circuit of Fig. 2.
Fig. 4 is the process flow diagram of the brightness adjusting method of LCD of the present invention.
[embodiment]
Seeing also Fig. 2, is the synoptic diagram of the LCD of the present invention's one better embodiment.This LCD 200 comprises that a driving governor 210, a power supply 250, a data driver that links to each other with this driving governor 210 and power supply 250 respectively 220, a scanner driver 230, that links to each other with this driving governor 210 and power supply 250 respectively are integrated in intednsity circuit 231, a display panels 240, an optical sensor 241 and a backlight circuit 270 that links to each other with this power supply 250 of scanner driver 230.This optical sensor 241 is arranged in this display panels 240, and be set directly on the substrate of glass of non-display area of this display panels 240, it adopts the light signal of amorphous silicon as photosensitive material induction ambient light, and the light signal of sensing is sent to this intednsity circuit 231.The external optical signals that these intednsity circuit 231 acceptance are sent to from this optical sensor 241 detects brightness of outside light, and controls backlight circuit 270 according to the result who detects.
, be the synoptic diagram of this intednsity circuit 231 please in the lump with reference to Fig. 3.This intednsity circuit 231 comprises a signal amplification circuit 2311, a control circuit 2313 and a feedback circuit 2315.This signal amplification circuit 2311 is connected to this light and passes light device 241, and it is used to accept the external optical signals S1 that sends from this optical sensor 241, and with this external optical signals S1 conversion and zoom into electric signal S2, and this electric signal S2 is sent to control circuit 2313; This control circuit 2313 is accepted and is judged this electric signal S2 and convert this electric signal S2 to control signal S3, and to this backlight circuit 270 output control signal S3; This backlight circuit 270 is accepted this control signal S3 and is regulated back light source brightness, and will regulate the result and feed back to this control circuit 2313 by this feedback circuit 2315, thereby obtains a stable backlight illumination.
It is described that LCD of the present invention is not limited to above-mentioned embodiment, and for example this intednsity circuit 231 also can be integrated in data driver 220.
The present invention also discloses a kind of method of backlight illumination of automatic regulator solution crystal display, and the existing LCD that discloses with above-mentioned embodiment illustrates its step.See also Fig. 4, it may further comprise the steps:
Compared with prior art, above-mentioned LCD 200 adopts this optical sensor 241 induction brightness of outside light, and backlight adjusting the by 231 pairs of these LCD 200 of intednsity circuit, can regulate this backlight illumination automatically, thereby vision is more comfortable when the user observes picture.
Claims (10)
1. LCD, it comprises that one has the display panels and a backlight circuit of non-display area, it is characterized in that: this LCD also comprises the optical sensor and an intednsity circuit of the light signal of an induction ambient light, this optical sensor is arranged on the non-display area of display panels, this intednsity circuit is used to receive the light signal of this optical sensor, and becoming control signal according to the brightness transition of this light signal, this backlight circuit can be accepted this control signal to regulate backlight illumination.
2. LCD as claimed in claim 1 is characterized in that: this LCD comprises the one scan driver, and this intednsity circuit is incorporated in this scanner driver.
3. LCD as claimed in claim 1 is characterized in that: this LCD comprises a data driver, and this intednsity circuit is incorporated in this data driver.
4. LCD as claimed in claim 1 is characterized in that: this intednsity circuit comprises the signal amplification circuit and a control circuit that light signal can be amplified.
5. LCD as claimed in claim 4 is characterized in that: this intednsity circuit further comprises a feedback circuit, and this feedback circuit is regulated result backlight with backlight circuit and fed back to control circuit.
6. LCD as claimed in claim 1 is characterized in that: this optical sensor adopts amorphous silicon material to make.
7. backlight liquid crystal display brightness adjusting method as claimed in claim 1, its step comprises:
Utilize the light signal of optical sensor induction ambient light;
According to light signal, utilize intednsity circuit to judge brightness of outside light;
According to the judgement of intednsity circuit, utilize backlight circuit to regulate backlight illumination;
The adjusting result of backlight circuit is fed back to intednsity circuit.
8. backlight liquid crystal display brightness adjusting method as claimed in claim 7 is characterized in that: this optical sensor adopts amorphous silicon material to make.
9. backlight liquid crystal display brightness adjusting method as claimed in claim 7, it is characterized in that: this intednsity circuit comprises signal amplification circuit and control circuit, utilize this signal amplification circuit that the light signal amplification of ambient light is transferred to control circuit, control circuit is judged brightness of outside light according to the light signal of this ambient light, and judged result is transferred to backlight circuit.
10. backlight liquid crystal display brightness adjusting method as claimed in claim 9 is characterized in that: this intednsity circuit further comprises a feedback circuit, utilizes this feedback circuit that the adjusting result of backlight circuit is fed back to control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510121179 CN1987565A (en) | 2005-12-23 | 2005-12-23 | Liquid crystal display and its back light brightness regulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510121179 CN1987565A (en) | 2005-12-23 | 2005-12-23 | Liquid crystal display and its back light brightness regulating method |
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| Publication Number | Publication Date |
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| CN1987565A true CN1987565A (en) | 2007-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510121179 Pending CN1987565A (en) | 2005-12-23 | 2005-12-23 | Liquid crystal display and its back light brightness regulating method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853625A (en) * | 2010-05-04 | 2010-10-06 | 广东中显科技有限公司 | Flat panel display system capable of regulating luminance automatically |
| CN103077686A (en) * | 2013-01-28 | 2013-05-01 | 东莞宇龙通信科技有限公司 | Electronic device and method for regulating screen brightness |
| CN101477784B (en) * | 2007-12-26 | 2013-06-26 | 统宝光电股份有限公司 | Control method, computer program for implementing the same, and display device |
| CN104637452A (en) * | 2013-11-14 | 2015-05-20 | 上海航空电器有限公司 | Automatic brightness regulating method for aviation airborne liquid crystal display |
| CN106057137A (en) * | 2016-08-22 | 2016-10-26 | 信利光电股份有限公司 | Display device and brightness control method thereof |
| CN106340272A (en) * | 2016-08-24 | 2017-01-18 | 珠海格力电器股份有限公司 | Electronic device and backlight control method and backlight control device thereof |
| CN107665678A (en) * | 2017-09-19 | 2018-02-06 | 惠科股份有限公司 | Liquid Crystal Display And Method For Driving |
| CN104637452B (en) * | 2013-11-14 | 2018-06-01 | 上海航空电器有限公司 | Airborne LCD brightness Automatic adjustment method |
| CN108833814A (en) * | 2018-07-12 | 2018-11-16 | 深圳创维－Rgb电子有限公司 | Multi-region backlight control system, method, TV and readable storage medium storing program for executing |
| CN111223458A (en) * | 2020-01-06 | 2020-06-02 | 昆山龙腾光电股份有限公司 | Display module and electronic equipment |
-
2005
- 2005-12-23 CN CN 200510121179 patent/CN1987565A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477784B (en) * | 2007-12-26 | 2013-06-26 | 统宝光电股份有限公司 | Control method, computer program for implementing the same, and display device |
| CN101853625A (en) * | 2010-05-04 | 2010-10-06 | 广东中显科技有限公司 | Flat panel display system capable of regulating luminance automatically |
| CN103077686A (en) * | 2013-01-28 | 2013-05-01 | 东莞宇龙通信科技有限公司 | Electronic device and method for regulating screen brightness |
| CN103077686B (en) * | 2013-01-28 | 2016-03-09 | 东莞宇龙通信科技有限公司 | The electronic equipment of adjusting screen brightness and method |
| CN104637452B (en) * | 2013-11-14 | 2018-06-01 | 上海航空电器有限公司 | Airborne LCD brightness Automatic adjustment method |
| CN104637452A (en) * | 2013-11-14 | 2015-05-20 | 上海航空电器有限公司 | Automatic brightness regulating method for aviation airborne liquid crystal display |
| CN106057137A (en) * | 2016-08-22 | 2016-10-26 | 信利光电股份有限公司 | Display device and brightness control method thereof |
| CN106340272A (en) * | 2016-08-24 | 2017-01-18 | 珠海格力电器股份有限公司 | Electronic device and backlight control method and backlight control device thereof |
| CN107665678A (en) * | 2017-09-19 | 2018-02-06 | 惠科股份有限公司 | Liquid Crystal Display And Method For Driving |
| WO2019056603A1 (en) * | 2017-09-19 | 2019-03-28 | 惠科股份有限公司 | Liquid crystal display and drive method therefor |
| CN108833814A (en) * | 2018-07-12 | 2018-11-16 | 深圳创维－Rgb电子有限公司 | Multi-region backlight control system, method, TV and readable storage medium storing program for executing |
| US20200394970A1 (en) * | 2018-07-12 | 2020-12-17 | Shenzhen Skyworth-Rgb Electronic Co., Ltd. | Multi-region backlight control system and method, television, and readable storage medium |
| US11620956B2 (en) * | 2018-07-12 | 2023-04-04 | Shenzhen Skyworth-Rgb Electronic Co., Ltd. | Multi-region backlight control system and method, television, and readable storage medium |
| CN111223458A (en) * | 2020-01-06 | 2020-06-02 | 昆山龙腾光电股份有限公司 | Display module and electronic equipment |
| CN111223458B (en) * | 2020-01-06 | 2022-02-15 | 昆山龙腾光电股份有限公司 | Display module and electronic equipment |
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