CN1987964A - Display device and its control method - Google Patents
Display device and its control method Download PDFInfo
- Publication number
- CN1987964A CN1987964A CN 200510121185 CN200510121185A CN1987964A CN 1987964 A CN1987964 A CN 1987964A CN 200510121185 CN200510121185 CN 200510121185 CN 200510121185 A CN200510121185 A CN 200510121185A CN 1987964 A CN1987964 A CN 1987964A
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- display
- control circuit
- brightness
- sensing element
- display device
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Abstract
This invention relates to a display device and a control method, in which, said display device includes an inherent supply, a display module, a display control circuit connected with said module, a solar battery, a first brightness sensing element and a second brightness sensing element connected with the display control circuit separately, said solar battery provides electricity to the display module, the first sensing element monitors environment brightness, said second brightness sensing element monitors the actual display brightness of the display module to provide accurate feedback of brightness and increase the accurate control to display brightness.
Description
[technical field]
The present invention relates to a kind of display device and control method thereof.
[background technology]
At present, display device is removed and to be widely used in home computer, TV etc., more is applied to portable computer, mobile phone, vehicle-mounted or airborne audiovisual entertainment equipment etc.
The operating environment of display device can change with certain condition, difference as the place, the power of ambient light and headlamp switch etc., when the user observes show image under varying environment brightness, need the display brightness of display device to be made corresponding adjustment, to obtain the visual experience of the most comfortable at varying environment brightness.
Fig. 1 is a kind of circuit blocks figure of prior art display device.This display device 100 comprises that an intrinsic power supply 110, a display control circuit 130, show module 150 and a plurality of brightness sensing element 170.This intrinsic power supply 110 provides electric energy to drive this display control circuit 130.This shows the displaying scheme of module 150 these display control circuit 130 controls.These brightness sensing element 170 monitoring of environmental brightness, and feedback signal is to this display control circuit 130.
The principle of work of this display device 100 is: this intrinsic power supply 110 provides electric energy to this display control circuit 130; This display control circuit 130 sends the displaying scheme that shows signal is controlled this demonstration module 150.
When ambient brightness changed, this brightness sensing element 170 sent feedback signal to this display control circuit 130, after this display control circuit 130 receives this feedback signal, adjusted the displaying scheme of this demonstration module 150 according to this feedback signal.
The variation of these display device 100 monitoring of environmental brightness, and adjust the display brightness that shows module 150 automatically according to the variation of ambient brightness need not manual adjustment, and is comparatively convenient.So, after this display device 100 is used a period of time, provide electric energy to the power supply power supply capacity of this demonstration module 150 to descend, after the control signal of accepting display control circuit 130, show that module 150 adjusted display brightness may not reach desired display brightness, thereby make brilliance control not accurate enough.
In addition, only use intrinsic power supply 110 supply electric energy, the service time of this display device 100 is limited.
[summary of the invention]
For overcoming the problem that above-mentioned display device brilliance control is inaccurate and the demonstration time falls short of, the display device that is necessary to provide a kind of display brightness precise control and prolongs the demonstration time.
Also be necessary to provide a kind of this method for controlling display device.
A kind of display device, it comprises that an intrinsic power supply, shows module, a display control circuit that is electrically connected with this demonstration module, a solar cell and a plurality of first brightness sensing element and second brightness sensing element that is electrically connected respectively with this display control circuit, this first brightness sensing element monitoring of environmental brightness and feedback signal are to this display control circuit, and the display brightness of this second brightness sensing element monitoring demonstration module and feedback signal are to this display control circuit.
A kind of display-apparatus control method, it may further comprise the steps: this first brightness sensing element monitoring of environmental brightness; This second brightness sensing element is monitored the display brightness of this demonstration module; This display control circuit is ambient brightness and display brightness relatively, and obtains a display brightness and adjust scheme; This solar cell provides electric energy to this display control circuit according to this comparative result; This display control circuit is adjusted the display brightness of this demonstration module.
Compared to prior art, display device of the present invention and control method thereof are by the second brightness sensing element, directly monitoring shows the intrinsic brilliance of module, but the first brightness sensing element that cooperates monitoring of environmental brightness, for display control circuit provides brightness feedback accurately, increase the display brightness control accuracy.In addition, this solar cell is heightened the required additional electrical energy of this demonstration module brightness as accessory power supply to provide, and prolongs the demonstration time of display device.
[description of drawings]
Fig. 1 is a kind of circuit blocks figure of prior art display device.
Fig. 2 is the circuit blocks figure of a kind of better embodiment of display device of the present invention.
Fig. 3 is the brilliance control process flow diagram of display device shown in Figure 2.
[embodiment]
Seeing also Fig. 2, is the circuit blocks figure of a kind of better embodiment of display device of the present invention.This display device 400 comprises that an intrinsic power supply 410, a display control circuit 420, a plurality of first brightness sensing element 425, show module 430, a plurality of second brightness sensing element 435, a solar cell 460 and a safety control circuit 465.This intrinsic power supply 410 is electrically connected with this display control circuit 420 and this demonstration module 430 respectively, provide electric energy to this display control circuit 420 and this demonstration module 430, this first brightness sensing element 425 is electrically connected with this display control circuit 420, this second brightness sensing element 435 is electrically connected with this display control circuit 420 and this demonstration module 430 respectively, and this safety control circuit 465 is electrically connected with this display control circuit 420 and this solar cell respectively.
This display control circuit 420 can accept to transmit signal, and adjusts the display brightness of display device 400.At dissimilar display device 400, can select corresponding control mode.If this display device 400 is cathode-ray tube (CRT) (Cathode-Ray Tube, CRT) display device, the then energy of these display control circuit 420 its electron guns of may command; If this display device 400 be liquid crystal indicator (LiquidCrystal Display, LCD), the voltage of these display control circuit 420 its light sources of may command then; If this display device 400 is that (Plasma Display Panel, PDP), then these display control circuit 420 may command produce the voltage of electricity slurry effect to electric plasma display device.
This first brightness sensing element 425 is electrically connected with this display control circuit 420, but its monitoring of environmental brightness, and the transmission luminance signal is to this display control circuit 420.This first brightness sensing element 425 is photoresistance, semiconductor element, optical element or optical integrated circuit etc.
This demonstration module 430 comprises that the display panel 431 and of a display frame provides the light source 432 of light.The control signal that this display panel 431 receives from this display control circuit 420 is to adjust the brightness displaying scheme of display panel 431; This light source 432 is received from the electric energy of this intrinsic power supply 410, excites this light source 432 luminous, and these light source 432 transmission rays are to this display panel 431, to cooperate the brightness displaying scheme of this display panel 431.When these display panel 431 exhibit high brilliance pictures, this light source 432 provides more light to this display panel 431; When this display panel 431 showed the low-light level picture, this light source 432 provided less light to this display panel 431, made to show that module 400 has higher display frame contrast.
This second brightness sensing element 435 is arranged between this display control circuit 420 and this demonstration module 430, and is electrically connected this display control circuit 420 and this demonstration module 430 respectively.This second brightness sensing element 435 can be monitored the actual displayed brightness that shows module 430, and feeds back this luminance signal to this display control circuit 420.This second brightness sensing element 435 is photoresistance, semiconductor element, optical element or optical integrated circuit etc.
This solar cell 460 is converted to electric energy with the ambient light energy that receives, and shows the light source 432 of module 430 by these safety control circuit 465 electric energy transmittings to this display control circuit 420 and this.
This safety control circuit 465 is arranged between this display control circuit 420 and this solar cell 460, and is electrically connected with this display control circuit 420 and this solar cell 460 respectively.The control signal that this safety control circuit 465 is accepted from this display control circuit 420, and according to this control signal, determine the power supply plan of this solar cell 460, electric energy transmitting to this display control circuit 420 and this shows the light source 432 of module 430, simultaneously the output current of these safety control circuit 465 these solar cells 460 of control.
Usually, when display device 400 was used in the different lightness environment, the visual effect of its display frame changed thereupon.For reaching desired visual effect, need constantly change the brightness displaying scheme of this display device 400 according to the variation of ambient brightness.When ambient brightness raises, the corresponding luminosity that improves the light source 432 of this demonstration module 430; When ambient brightness reduces, the corresponding luminosity that reduces the light source 432 of this demonstration module 430.Seeing also Fig. 3, is the workflow diagram of display device 400 of the present invention.
In these display device 400 courses of work, this solar cell 460 is in reception environment light all the time and the luminous energy that this received is converted into energy state, and it also comprises the steps:
Step S61, just this display device 400 of making;
Step S62, these first brightness sensing element, 425 monitoring of environmental brightness produce the ambient brightness signal, and this shows the actual displayed brightness of module 430 these second brightness sensing element, 435 monitorings, produces another luminance signal equally;
Step S63, this display control circuit 420 receives and compares this two luminance signal;
Step S64, this display control circuit 420 obtains display brightness according to this comparison result and adjusts scheme, and feedback signal is to this safety control circuit 465;
Step S65, this safety control circuit 465 is determined the power supply plan of solar cell 460 according to this feedback signal;
Step S66, this solar cell 460 be according to the determined power supply plan of step S65, supplies power to the light source 432 of this display control circuit 430 and this demonstration module 430 by this safety control circuit 465, to adjust the luminosity of the light source 432 that shows module 430.
According to the variation of ambient brightness, this display device 400 above-mentioned steps repeatedly that always circulates.
The principle of work of this display device 400 is: when ambient brightness raises, this first brightness sensing element 425 monitors the varying environment luminance signal, and the ambient brightness signal that raises transferred to this display control circuit 420, this display control circuit 420 receives the actual displayed brightness of the display panel 431 that monitors from this second brightness sensing element 435 simultaneously, after 420 pairs of this two luminance signal comparisons of this display control circuit, this display control circuit 420 produces two control signals, wherein a control signal transfers to this display panel 431, adopt the high brightness displaying scheme to adjust this display panel 431, another control signal transfers to this safety control circuit 465, this safety control circuit 465 increases the output current of this solar cell 460 according to this control signal, to improve the luminosity of light source 432.
When ambient brightness reduces, the ambient brightness that same this display control circuit 420 is received from this first brightness sensing element 425 reduces signal, and the comparison actual displayed brightness of being monitored from this second brightness sensing element 435, same two control signals that produce, wherein a signal transfers to this display panel 431, adopt the low-light level displaying scheme to adjust this display panel 431, another control signal transfers to this safety control circuit 465, this safety control circuit 465 reduces the output current of this solar cell 460 according to this control signal, to reduce the luminosity of light source 432.
When ambient brightness changes, variation as the light power, the switch of light etc., the solar cell 460 of this display device 400 provides electric energy to this display control circuit 430 as accessory power supply, and this solar cell 460 changes and selectivity supply varying strength electric current with surround lighting by the output current of these safety control circuit 465 its solar cells 460 of control, to adjust the display brightness that shows module 430, make this display device 400 can be used under the environment of varying environment brightness, and prolonged the demonstration time that shows module 400.
This display device 400 adopts the second brightness sensing element 435 directly to monitor the actual displayed brightness that shows module 430, but the first brightness sensing element 425 that cooperates monitoring of environmental brightness, avoid because of showing the aging of module 430, make the little defective of actual displayed brightness ratio nominal brightness, for display control circuit 420 provides brightness feedback accurately, carry and add the display brightness control accuracy.
Claims (10)
1. display device, it comprises that one shows module, one provides the intrinsic power supply of electric energy to this demonstration module, one display control circuit that is electrically connected with this demonstration module, at least one first brightness sensing element that is electrically connected respectively with this display control circuit, it is characterized in that: this display device comprises that also one provides solar cell and at least one second brightness sensing element of electric energy to this demonstration module, this first brightness sensing element monitoring of environmental brightness and feedback signal are to this display control circuit, and the display brightness of this second brightness sensing element monitoring demonstration module and feedback signal are to this display control circuit.
2. display device as claimed in claim 1 is characterized in that: this display device comprises that also one is electrically connected on the safety control circuit of this solar cell and this display control circuit, and this solar cell provides electric energy by this safety control circuit.
3. display device as claimed in claim 2 is characterized in that: this display control circuit is received from the luminance signal of this first brightness sensing element and this second brightness sensing element, and feedback control signal is to this safety control circuit.
4. display device as claimed in claim 3 is characterized in that: this demonstration module comprises a display panel, and this display control circuit feedback signal is controlled the display brightness of this display panel to this display panel.
5. display device as claimed in claim 4 is characterized in that: this demonstration module comprises at least one light source, and this intrinsic battery and this solar cell are electrically connected with this light source, and controls the luminosity of this light source.
6. display device as claimed in claim 5 is characterized in that: this safety control circuit is controlled the output current of this solar cell according to the control signal of this display control circuit.
7. method for controlling display device according to claim 1, this control method may further comprise the steps: this first brightness sensing element monitoring of environmental brightness; This second brightness sensing element is monitored the display brightness of this demonstration module; This display control circuit is ambient brightness and display brightness relatively, and obtains a display brightness and adjust scheme; This solar cell provides electric energy to this display control circuit according to this comparative result; This display control circuit is adjusted the display brightness of this demonstration module.
8. display-apparatus control method as claimed in claim 7, it is characterized in that: this display device comprises a safety control circuit, it is connected electrically between this solar cell and this display control circuit, and this solar cell provides electric energy by this safety control circuit.
9. display-apparatus control method as claimed in claim 8 is characterized in that: this display control circuit is received from the luminance signal of this first brightness sensing element and this second brightness sensing element, and feedback control signal is to this safety control circuit.
10. display-apparatus control method as claimed in claim 9 is characterized in that: this demonstration module also comprises a display panel, and this display control circuit feedback signal is controlled the display brightness of this display panel to this display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510121185 CN1987964A (en) | 2005-12-25 | 2005-12-25 | Display device and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510121185 CN1987964A (en) | 2005-12-25 | 2005-12-25 | Display device and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1987964A true CN1987964A (en) | 2007-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510121185 Pending CN1987964A (en) | 2005-12-25 | 2005-12-25 | Display device and its control method |
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| CN (1) | CN1987964A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100060669A1 (en) * | 2008-09-09 | 2010-03-11 | Chi Mei Communication Systems, Inc. | Brightness-adjusting device and method for display screens |
| CN101714334A (en) * | 2009-11-11 | 2010-05-26 | 康佳集团股份有限公司 | Liquid crystal display television LED backlight circuit supplied by solar energy |
| CN102055935A (en) * | 2009-11-02 | 2011-05-11 | 康佳集团股份有限公司 | Power supply device of liquid crystal television backlight system |
| CN102903337A (en) * | 2012-09-21 | 2013-01-30 | 京东方科技集团股份有限公司 | Liquid crystal display as well as control method and device thereof |
| CN101995691B (en) * | 2009-08-20 | 2013-05-15 | 上海天马微电子有限公司 | Liquid crystal display device |
| CN106057170A (en) * | 2016-06-30 | 2016-10-26 | 联想(北京)有限公司 | Adjusting method and electronic equipment |
-
2005
- 2005-12-25 CN CN 200510121185 patent/CN1987964A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100060669A1 (en) * | 2008-09-09 | 2010-03-11 | Chi Mei Communication Systems, Inc. | Brightness-adjusting device and method for display screens |
| CN101673514A (en) * | 2008-09-09 | 2010-03-17 | 深圳富泰宏精密工业有限公司 | Screen brightness-adjusting device and method |
| CN101995691B (en) * | 2009-08-20 | 2013-05-15 | 上海天马微电子有限公司 | Liquid crystal display device |
| CN102055935A (en) * | 2009-11-02 | 2011-05-11 | 康佳集团股份有限公司 | Power supply device of liquid crystal television backlight system |
| CN102055935B (en) * | 2009-11-02 | 2014-07-16 | 康佳集团股份有限公司 | Power supply device of liquid crystal television backlight system |
| CN101714334A (en) * | 2009-11-11 | 2010-05-26 | 康佳集团股份有限公司 | Liquid crystal display television LED backlight circuit supplied by solar energy |
| CN102903337A (en) * | 2012-09-21 | 2013-01-30 | 京东方科技集团股份有限公司 | Liquid crystal display as well as control method and device thereof |
| CN102903337B (en) * | 2012-09-21 | 2014-09-10 | 京东方科技集团股份有限公司 | Liquid crystal display as well as control method and device thereof |
| CN106057170A (en) * | 2016-06-30 | 2016-10-26 | 联想(北京)有限公司 | Adjusting method and electronic equipment |
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