CN201733493U - Led backlight source control circuit - Google Patents
Led backlight source control circuit Download PDFInfo
- Publication number
- CN201733493U CN201733493U CN2010202618538U CN201020261853U CN201733493U CN 201733493 U CN201733493 U CN 201733493U CN 2010202618538 U CN2010202618538 U CN 2010202618538U CN 201020261853 U CN201020261853 U CN 201020261853U CN 201733493 U CN201733493 U CN 201733493U
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- China
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- signal
- module
- output control
- control module
- led
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model relates to an LED backlight source control circuit which comprises a light-sensing module, a signal analysis module and an output control module. The light-sensing module is connected with the signal analysis module, and the signal analysis module is connected with the output control module. The light-sensing module senses outside light intensity and converts the light intensity into an electric signal which is then transmitted to the signal analysis module, the signal analysis module analyzes and processes the received electric signal and then outputs a signal to the output control module, and the output control module controls the working condition of the LED backlight source. The circuit can sense outside light intensity so as to regulate the light-emitting intensity of the LED backlight source, thus saving energy while achieving the normal display effect.
Description
Technical field
The utility model belongs to a kind of control circuit, refers to a kind of LED-backlit source control circuit especially.
Background technology
Along with making constant progress of LED technology, use LED to become a kind of trend as the backlight of display.The LED-backlit source has that illumination effect is good, the life-span is long, low power consumption and other advantages.But, also can have the situation of wasting electric energy in some cases.Such as, when watching film, most of people can turn off electric light, to reach the effect of watching at the cinema, at this moment, all deceive on every side, have only screen to send light, so it is strong especially that the light that screen sends just seems, eyes can be incompatible when just beginning, and of a specified duration will produce uncomfortable feeling such as ache.So the LED-backlit source does not need to send so strong light, it need adjust the luminous intensity of self so that and environment coordination on every side, can not produce too big contrast.Can reach better result of use like this, also save the energy, help environmental protection.
The utility model content
For achieving the above object, the utility model provides a kind of LED-backlit source control circuit.
The technical scheme that the utility model is taked is as follows:
The LED-backlit source control circuit comprises illuminant module, signal analyse block and output control module.Illuminant module is connected with signal analyse block, and signal analyse block is connected with output control module again.Wherein, respond to extraneous luminous intensity and convert the signal of telecommunication to by illuminant module, be transferred to signal analyse block then, after signal analyse block is carried out analyzing and processing to the signal of telecommunication that receives, output signal to output control module, by the operating state in output control module control LED-backlit source.
The beneficial effects of the utility model are: this circuit can be responded to extraneous luminous intensity, thereby adjusts the luminous intensity in LED-backlit source, when reaching normal display effect, has saved the energy again.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Among the figure:
10 illuminant modules, 20 signal analyse block,
30 output control modules, 40LED backlight supply module,
The 50LED backlight.
Embodiment
Below in conjunction with Fig. 1 the utility model is further described:
Theory diagram of the present utility model as shown in Figure 1, among the figure, the LED-backlit source control circuit comprises illuminant module 10, signal analyse block 20 and output control module 30.Illuminant module 10 is connected with signal analyse block 20, and signal analyse block 20 is connected with output control module 30 again.LED-backlit source supply module 40 is connected to LED-backlit source 50 by output control module 30.Wherein, respond to extraneous luminous intensity and convert the corresponding signal of telecommunication to by illuminant module 10, be transferred to signal analyse block 20 then, after 20 pairs of signals of telecommunication that receive of signal analyse block carry out analyzing and processing, output signal to output control module 30, export the voltage or the electric current in LED-backlit source 50 to by output control module 30 control LED-backlit source supply modules 40, thereby reach the purpose of control LED-backlit source 50 operating states.When extraneous light is dark, the variation of resistance takes place in the photo resistance meeting in the illuminant module 10 because of the size of light intensity, process chip in the signal analyse block 20 is according to the numerical value of this variation, analyze the required lowest power consumption in current luminous intensity and LED-backlit source 50, send control signal then and give output control module 30, because output control module 30 places the connection line in LED-backlit source supply module 40 and LED-backlit source 50, so, reduce the supply power voltage or the electric current in 40 pairs of LED-backlit sources 50 of supply module, LED-backlit source by output control module 30, thereby reduced the power consumption in LED-backlit source 50, weaken its luminous quantity, it is coordinated mutually with the luminous intensity of external environment, can not produce too big contrast, therefore, can not produce too big stimulation, also save the energy people's eyes.
Certainly, above embodiment just is explanation rather than restriction the utility model, the above only is preferred embodiment of the present utility model, so all equivalences of being done according to the described method of the utility model patent claim change or modify, is included in the utility model patent claim.
Claims (1)
1.LED backlight control circuit is characterized in that: this circuit comprises illuminant module, signal analyse block and output control module, and illuminant module is connected with signal analyse block, and signal analyse block is connected with output control module again; Wherein, respond to extraneous luminous intensity and convert the signal of telecommunication to by illuminant module, be transferred to signal analyse block then, after signal analyse block is carried out analyzing and processing to the signal of telecommunication that receives, output signal to output control module, by the operating state in output control module control LED-backlit source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202618538U CN201733493U (en) | 2010-07-16 | 2010-07-16 | Led backlight source control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202618538U CN201733493U (en) | 2010-07-16 | 2010-07-16 | Led backlight source control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733493U true CN201733493U (en) | 2011-02-02 |
Family
ID=43524647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202618538U Expired - Fee Related CN201733493U (en) | 2010-07-16 | 2010-07-16 | Led backlight source control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021337A (en) * | 2012-12-20 | 2013-04-03 | 高炎华 | Light-emitting diode (LED) display device with brightness adjusting device |
-
2010
- 2010-07-16 CN CN2010202618538U patent/CN201733493U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021337A (en) * | 2012-12-20 | 2013-04-03 | 高炎华 | Light-emitting diode (LED) display device with brightness adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20180716 |