CN100516987C - Liquid crystal display and its automatic regulating method - Google Patents
Liquid crystal display and its automatic regulating method Download PDFInfo
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- CN100516987C CN100516987C CNB2005101211941A CN200510121194A CN100516987C CN 100516987 C CN100516987 C CN 100516987C CN B2005101211941 A CNB2005101211941 A CN B2005101211941A CN 200510121194 A CN200510121194 A CN 200510121194A CN 100516987 C CN100516987 C CN 100516987C
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Abstract
The liquid crystal display (LCD) device includes a LCD faceplate, a scan drive, a data drive, a driving controller, a light sensor, a light source, and a backlight drive circuit (BDC). The scan drive provides scan signal to the LCD faceplate. The data drive provides image signal to the LCD faceplate. The driving controller controls the scan drive, and the data drive to drive the LCD faceplate to display image. Sensing external light, the light sensor generates a light-sensing signal. BDC is in use for driving luminescence of the light source to provide light beam for the LCD faceplate. Receiving and recognizing the light-sensing signal, BDC can determine frequency and brightness of external light based on the light-sensing signal. Then, BDC controls luminescence brightness, and luminescence frequency based on frequency and brightness of external light.
Description
[technical field]
The present invention relates to a kind of LCD and Automatic adjustment method thereof.
[background technology]
At present, LCD has replaced traditional cathode-ray tube (CRT) (CathodeRay Tube gradually, CRT) display, and, because advantages such as LCD has gently, approaches, power consumption is little, so be widely used in fields such as portable DVD player, visual music player, mobile phone and notebook computer.
Seeing also Fig. 1, is the synoptic diagram of a kind of LCD 100 of prior art exposure.This LCD 100 comprises a display panels 110, one scan driver 120, a data driver 130, a driving governor 140, a light source 160 and a backlight drive circuit 170.It is luminous that this backlight drive circuit 170 drives this light source 160, shows required light so that this display panels 110 to be provided.This driving governor 140 is used for controlling this data driver 130 and this scanner driver 120, these scanner driver 120 output scanning signals are to this display panels 110, this data driver 130 outputs one picture signal to this display panels 110 to control the penetrance of this display panels 110, to be implemented in display image on this display panels 110.
But the display frequency of this LCD 100 and the setting value of brightness just are arranged in this driving governor 140 in LCD 100 initialization, when the change in location of LCD 100 and be in following time of external light source of different frequency and brightness, can't its display frequency and brightness be automatically adjusted according to the flicker frequency and the brightness of external light source, so that user's eyes are tired easily.
[summary of the invention]
Can't be in order to solve LCD in the prior art according to the flicker frequency of external light source and brightness to the problem that its display frequency and brightness automatically adjust, be necessary to provide a kind of flicker frequency and brightness LCD that its display frequency and brightness are automatically adjusted according to external light source.
Can't be in order to solve LCD in the prior art according to the flicker frequency of external light source and brightness to the problem that its display frequency and brightness automatically adjust, be necessary to provide a kind of flicker frequency and brightness liquid crystal display driving method that its display frequency and brightness are automatically adjusted according to external light source.
A kind of LCD, it comprises a display panels, one scan driver, a data driver, a driving governor, an optical inductor, a light source and a backlight drive circuit.The sweep signal that provides this scanner driver arrives this display panels.The picture signal that provides this data driver arrives this display panels.This driving governor is controlled this scanner driver and this data driver to drive this display panels display image.This optical inductor can be responded to ambient light and produce a photoinduction signal.This backlight drive circuit drives this light source luminescent and provides light for this display panels, this backlight drive circuit can receive and identify this photoinduction signal, judge the flicker frequency and the brightness of ambient light then according to this photoinduction signal, and glow frequency and the luminosity of controlling this light source according to the flicker frequency and the brightness of this ambient light.
A kind of LCD Automatic adjustment method, this LCD comprise an optical inductor, a display panels and a light source, and this method comprises the steps: optical inductor induction external optical signals, and produces a photoinduction signal; Judge the flicker frequency and the brightness of ambient light according to this photoinduction signal; According to the flicker frequency of ambient light and the glow frequency and the brightness of this light source of brightness regulation.
A kind of LCD, it comprises a display panels, one scan driver, a data driver, a driving governor, an optical inductor, a light source and a backlight drive circuit.The sweep signal that provides this scanner driver arrives this display panels.The picture signal that provides this data driver arrives this display panels.This driving governor is controlled this scanner driver and this data driver to drive this display panels display image.This optical inductor can be responded to ambient light and produce a photoinduction signal.This backlight drive circuit drives this light source luminescent and provides light for this display panels.This driving governor can receive and identify this photoinduction signal, judge the flicker frequency and the brightness of ambient light then according to this photoinduction signal, and control this scanner driver and this data driver to drive this display panels display image according to the flicker frequency of this ambient light and brightness.
A kind of LCD Automatic adjustment method, this LCD comprise an optical inductor, a display panels and a light source, and this method comprises the steps: optical inductor induction external optical signals, and produces a photoinduction signal; Judge brightness of outside light and flicker frequency according to this photoinduction signal; Regulate this display panels according to brightness of outside light and flicker frequency.
A kind of LCD, it comprises a display panels, one scan driver, a data driver, a driving governor, an optical inductor, a light source and a backlight drive circuit.The sweep signal that provides this scanner driver arrives this display panels.The picture signal that provides this data driver arrives this display panels.This driving governor is controlled this scanner driver and this data driver to drive this display panels display image.This optical inductor can be responded to ambient light and produce a photoinduction signal.This backlight drive circuit drives this light source luminescent and provides light for this display panels.This driving governor can receive this photoinduction signal, judge the flicker frequency and the brightness of ambient light then according to this photoinduction signal, and control this scanner driver and this data driver to drive this display panels display image according to the flicker frequency of this ambient light and brightness, this driving governor also transmits the flicker frequency of generation table ambient light and the electric signal of brightness arrives this backlight drive circuit, glow frequency and luminosity that this backlight drive circuit is controlled this light source according to the flicker frequency and the brightness of this ambient light.
A kind of LCD Automatic adjustment method, this LCD comprise an optical inductor, a display panels and a light source, and this method comprises the steps: optical inductor induction external optical signals, and produces a photoinduction signal; Judge the flicker frequency and the brightness of ambient light according to this photoinduction signal; According to the flicker frequency of ambient light and the display frequency and the transmittance of this display panels of brightness regulation, simultaneously according to the flicker frequency of ambient light and the glow frequency and the brightness of this light source of brightness regulation.
Compared to prior art, above-mentioned LCD can be according to the flicker frequency and the brightness of external light source, automatically regulate the display frequency and the transmittance of this display panels, so the display frequency of this LCD and brightness cooperates with surround lighting better, can prevent user's visual fatigue.
[description of drawings]
Fig. 1 is a kind of synoptic diagram of prior art LCD.
Fig. 2 is the synoptic diagram of LCD first embodiment of the present invention.
Fig. 3 is the process flow diagram of the Automatic adjustment method of LCD shown in Figure 2.
Fig. 4 is the synoptic diagram of LCD second embodiment of the present invention.
Fig. 5 is the process flow diagram of the Automatic adjustment method of LCD shown in Figure 4.
Fig. 6 is the synoptic diagram of LCD the 3rd embodiment of the present invention.
Fig. 7 is the process flow diagram of the Automatic adjustment method of this LCD shown in Figure 6.
[embodiment]
Seeing also Fig. 2, is the synoptic diagram of LCD first embodiment of the present invention.This LCD 200 comprises a display panels 210, one scan driver 220, a data driver 230, a driving governor 240, an optical inductor 250, a light source 260 and a backlight drive circuit 270.This optical inductor 250 is arranged in this display panels 210.Wherein, this light source 260 can be light emitting diode or cold cathode ray tube.This display panels 210 can be penetrate through type liquid crystal display board or semi-penetrating and semi-reflective liquid crystal display panel.
The sweep signal that provides this scanner driver 220 arrives this display panels 210.The picture signal that provides this data driver 230 arrives this display panels 210.This this scanner driver 220 of driving governor 240 controls and this data driver 230 are to drive this display panels 210 display images.This optical inductor 250 can be responded to ambient light and produce a photoinduction signal.This backlight drive circuit 270 drives that this light source 260 is luminous to provide light for this display panels 210, this backlight drive circuit 270 can receive and identify this photoinduction signal, judge the flicker frequency and the brightness of ambient light then according to this photoinduction signal, and luminosity and the glow frequency of controlling this light source 260 according to the flicker frequency and the brightness of this ambient light.For example, when the flicker frequency of external light source is 50Hz, can the corresponding glow frequency of regulating this light source 260 be 67Hz.If this display panels 210 is semi-penetrating and semi-reflective liquid crystal display panels, when environmental light brightness is higher, suitably turns down the luminosity of this light source 260 or close that this is backlight; When environmental light brightness is low, suitably heighten the luminosity of this light source 260.If this display panels 210 is penetrate through type liquid crystal display board, when environmental light brightness is low, suitably turn down the luminosity of this light source 260.When environmental light brightness is higher, suitably heighten the luminosity of this light source 260.
This LCD 200 also can have other change design, for example, this optical inductor 250 also can be a plurality of, and its position is not limited in this display panels 210, can also be in other position of this display panels 210, as long as it can sense the flicker frequency and the brightness of ambient light.
Seeing also Fig. 3, is the process flow diagram of the Automatic adjustment method of this LCD 200, and this Automatic adjustment method comprises the steps:
A. respond to the light signal of ambient light, and produce a photoinduction signal, this action is to utilize optical inductor 250 to finish;
B. amplify this photoinduction signal, this action is to utilize backlight drive circuit 270 to finish;
C. judge the flicker frequency and the brightness of ambient light according to this photoinduction signal, this action is to utilize backlight drive circuit 270 to finish;
D. according to the flicker frequency of ambient light and the glow frequency and the brightness of this light source 260 of brightness regulation, this action is to utilize backlight drive circuit 270 control light sources 260 to finish.
This LCD 200 adopts the flicker frequency and the brightness of these optical inductor 250 induction ambient light, and pass through this backlight drive circuit 270 and regulate the glow frequency and the brightness of these light sources 260, and then reach the display frequency of this LCD 200 or the automatic adjusting of brightness.
Seeing also Fig. 4, is the synoptic diagram of LCD second embodiment of the present invention.This LCD 400 comprises a display panels 410, one scan driver 420, a data driver 430, a driving governor 440, an optical inductor 450, a light source 460 and a backlight drive circuit 470.This optical inductor 450 is arranged in this display panels 410.Wherein, this light source 460 can be light emitting diode or cold cathode ray tube.This display panels 410 can be penetrate through type liquid crystal display board or semi-penetrating and semi-reflective liquid crystal display panel.
The sweep signal that provides this scanner driver 420 arrives this display panels 410.The picture signal that provides this data driver 430 arrives this display panels 410.This this scanner driver 420 of driving governor 440 controls and this data driver 430 are to drive this display panels 410 display images.This optical inductor 450 can be responded to ambient light and produce a photoinduction signal.This backlight drive circuit 470 drives that this light source 460 is luminous to provide light for this display panels 410.This driving governor 440 can receive and identify this photoinduction signal, judge the flicker frequency and the brightness of ambient light then according to this photoinduction signal, and control this scanner driver 420 and this data driver 430 to drive this display panels 410 display images according to the flicker frequency of this ambient light and brightness.For example, when the flicker frequency of external light source was 50Hz, display frequency that can corresponding regulator solution LCD panel 410 became 67Hz.If display panels 410 is semi-penetrating and semi-reflective liquid crystal display panels, when environmental light brightness is higher, suitably turn down the transmittance of this display panels 410; When environmental light brightness is low, suitably heighten the transmittance of this display panels 410.If display panels 410 is penetrate through type liquid crystal display board, when environmental light brightness is low, suitably turn down the transmittance of this display panels 410; When environmental light brightness is higher, suitably heighten the transmittance of this display panels 410.
Seeing also Fig. 5, is the process flow diagram of the Automatic adjustment method of this LCD 400, and this Automatic adjustment method comprises the steps:
A. respond to external optical signals, and produce a photoinduction signal, this action is to utilize this optical inductor 450 to finish;
B. amplify this photoinduction signal, this action is to utilize this driving governor 440 to finish;
C. judge the flicker frequency and the brightness of ambient light according to this photoinduction signal, this action is to utilize this driving governor 440 to finish;
D. according to the flicker frequency of ambient light and the display frequency and the transmittance of this display panels 410 of brightness regulation, this action is to utilize this this scanner driver 420 of driving governor 440 controls and this data driver 430 to finish to drive this display panels 410.
This LCD 400 adopts the flicker frequency and the brightness of these optical inductor 450 induction ambient light, and according to the flicker frequency of ambient light and the display frequency and the transmittance of this display panels 410 of brightness regulation, thereby realize the display frequency of this LCD 400 or the automatic adjusting of brightness.
Seeing also Fig. 6, is the synoptic diagram of LCD the 3rd embodiment of the present invention.This LCD 600 comprises a display panels 610, one scan driver 620, a data driver 630, a driving governor 640, an optical inductor 650, a light source 660 and a backlight drive circuit 670.This optical inductor 650 is arranged in this display panels 610.Wherein, this light source 660 can be light emitting diode or cold cathode ray tube.This display panels 610 can be penetrate through type liquid crystal display board or semi-penetrating and semi-reflective liquid crystal display panel.
The sweep signal that provides this scanner driver 620 arrives this display panels 610.The picture signal that provides this data driver 630 arrives this display panels 610.This this scanner driver 620 of driving governor 640 controls and this data driver 630 are to drive this display panels 610 display images.This optical inductor 650 can be responded to ambient light and produce a photoinduction signal.This backlight drive circuit 670 drives that this light source 660 is luminous to provide light for this display panels 610.This driving governor 640 can receive this photoinduction signal, judge the flicker frequency and the brightness of ambient light then according to this photoinduction signal, and control this scanner driver 620 and this data driver 630 to drive this display panels 610 display images according to the flicker frequency of this ambient light and brightness, this driving governor 640 also transmits the flicker frequency of generation table ambient light and the electric signal of brightness arrives this backlight drive circuit 670, luminosity and glow frequency that this backlight drive circuit 670 is controlled this light source 660 according to the flicker frequency and the brightness of this ambient light.
Seeing also Fig. 7, is the process flow diagram of the Automatic adjustment method of this LCD 600, and this Automatic adjustment method comprises the steps:
A. respond to external optical signals, and produce a photoinduction signal, this action is to utilize this optical inductor 650 to finish;
B. amplify this photoinduction signal, this action is to utilize this driving governor 640 to finish;
C. judge the flicker frequency and the brightness of ambient light according to this photoinduction signal, this action is to utilize this driving governor 640 to finish;
D. according to the flicker frequency of ambient light and the display frequency and the transmittance of this display panels 610 of brightness regulation, this action is to utilize this this scanner driver 620 of driving governor 640 controls and this data driver 630 to finish to drive this display panels 610;
E. the electric signal that transmits generation table brightness of outside light and flicker frequency is to this backlight drive circuit 670, and this action is to utilize this driving governor 640 to finish;
F. regulate the brightness and the glow frequency of this light source 660 according to brightness of outside light and flicker frequency, the display frequency of the glow frequency of this light source 660 and this display panels 610 is synchronous, and this action is to utilize backlight drive circuit 670 control light sources 660 to finish.
This LCD 600 adopts the flicker frequency and the brightness of these optical inductor 650 induction ambient light, and according to the flicker frequency of ambient light and the display frequency and the transmittance of this display panels 610 of brightness regulation, it is also according to the flicker frequency of ambient light and the glow frequency and the brightness of this light source 660 of brightness adjusted in concert, thereby realizes the display frequency of this LCD 600 or the automatic adjusting of brightness.
Claims (9)
1. LCD, it comprises:
One display panels;
The one scan driver, it provides sweep signal to arrive this display panels;
One data driver, it provides picture signal to arrive this display panels;
One driving governor, it controls this scanner driver and this data driver to drive this display panels display image;
One optical inductor, its induction ambient light also produces a photoinduction signal;
One light source; With
One backlight drive circuit, it is used for driving this light source luminescent and provides light for this display panels, this backlight drive circuit receives and identifies this photoinduction signal, judge the flicker frequency and the brightness of ambient light then according to this photoinduction signal, and glow frequency and the luminosity of controlling this light source according to the flicker frequency and the brightness of this ambient light.
2. LCD as claimed in claim 1 is characterized in that: this optical inductor is arranged in this display panels.
3. LCD as claimed in claim 1 is characterized in that: this light source is light emitting diode or cold cathode ray tube.
4. LCD as claimed in claim 1 is characterized in that: this display panels is penetrate through type liquid crystal display board or semi-penetrating and semi-reflective liquid crystal display panel.
5. LCD Automatic adjustment method, this LCD comprises an optical inductor, a display panels and a light source, this method comprises:
One optical inductor induction external optical signals, and produce a photoinduction signal;
Judge the flicker frequency and the brightness of ambient light according to this photoinduction signal;
According to the flicker frequency of ambient light and the glow frequency and the brightness of this light source of brightness regulation.
6. LCD Automatic adjustment method as claimed in claim 5 is characterized in that: this LCD Automatic adjustment method is amplified this photoinduction signal before further being included in and judging ambient light.
7. LCD, it comprises:
One display panels;
One optical inductor, its induction ambient light also produces a photoinduction signal;
The one scan driver, it provides sweep signal to arrive this display panels;
One data driver, it provides picture signal to arrive this display panels;
One light source;
One backlight drive circuit, it is used for driving this light source luminescent; With
One driving governor, it receives this photoinduction signal, judge the flicker frequency and the brightness of ambient light then according to this photoinduction signal, and control this scanner driver and display frequency and the transmittance of this data driver to drive this display panels according to the flicker frequency and the brightness of this ambient light; This driving governor also transmits the flicker frequency of generation table ambient light and the signal of brightness arrives this backlight drive circuit, glow frequency and luminosity that this backlight drive circuit is controlled this light source according to the flicker frequency and the brightness of this ambient light, the glow frequency of this light source and the display frequency of this display panels are synchronous.
8. LCD Automatic adjustment method, this LCD comprises an optical inductor, a display panels and a light source, this method comprises:
One optical inductor induction external optical signals, and produce a photoinduction signal;
Judge the flicker frequency and the brightness of ambient light according to this photoinduction signal;
According to the flicker frequency of ambient light and the display frequency and the transmittance of this display panels of brightness regulation, according to the flicker frequency of ambient light and the glow frequency and the brightness of this light source of brightness regulation, the glow frequency of this light source and the display frequency of this display panels are synchronous simultaneously.
9. LCD Automatic adjustment method as claimed in claim 8, it is characterized in that: this LCD Automatic adjustment method comprises that further the electric signal of transmission generation off-balancesheet circle luminance brightness and flicker frequency is to this backlight drive circuit after judging brightness of outside light and flicker frequency.
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| CNB2005101211941A CN100516987C (en) | 2005-12-23 | 2005-12-23 | Liquid crystal display and its automatic regulating method |
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| CNB2005101211941A CN100516987C (en) | 2005-12-23 | 2005-12-23 | Liquid crystal display and its automatic regulating method |
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| CN100516987C true CN100516987C (en) | 2009-07-22 |
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| EP2043081A3 (en) * | 2007-09-27 | 2010-04-14 | TPO Displays Corp. | Display devices with ambient light sensing |
| CN101221962B (en) * | 2008-01-23 | 2010-09-22 | 友达光电股份有限公司 | Display backlight module including photo-sensing device, LCD panel and display equipment |
| CN101561990B (en) * | 2008-04-18 | 2011-06-29 | 群康科技(深圳)有限公司 | Drive method of photoelectric film transistor, photoelectric sensor and plane display |
| TWI450574B (en) * | 2011-03-22 | 2014-08-21 | Acer Inc | Display system and method thereof |
| CN102957922A (en) * | 2011-08-26 | 2013-03-06 | 宏碁股份有限公司 | Display system and method for same |
| CN102937480A (en) * | 2012-11-21 | 2013-02-20 | 广东欧珀移动通信有限公司 | Method, device and mobile terminal for detecting ambient light frequency |
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| CN105848003A (en) * | 2016-03-29 | 2016-08-10 | 乐视控股（北京）有限公司 | Eye protection method suitable for display screen and eye protection device suitable for display screen |
| 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 |
| CN107919096A (en) * | 2016-10-11 | 2018-04-17 | 中兴通讯股份有限公司 | A kind of control method and headset equipment |
| CN107170363A (en) * | 2017-06-30 | 2017-09-15 | 苏州吉耐特信息科技有限公司 | A kind of method of work of the healthy escope with defencive function |
| CN107545863A (en) * | 2017-08-24 | 2018-01-05 | 胡艳萍 | Show the method, display frequency regulation and control method and display device of entire image |
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