CN201282586Y - Automatic regulating apparatus for LED backlight source of liquid crystal - Google Patents
Automatic regulating apparatus for LED backlight source of liquid crystal Download PDFInfo
- Publication number
- CN201282586Y CN201282586Y CNU2008202216852U CN200820221685U CN201282586Y CN 201282586 Y CN201282586 Y CN 201282586Y CN U2008202216852 U CNU2008202216852 U CN U2008202216852U CN 200820221685 U CN200820221685 U CN 200820221685U CN 201282586 Y CN201282586 Y CN 201282586Y
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- China
- Prior art keywords
- led
- backlit
- led backlight
- comparator
- circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
An LED backlight automatic adjusting device for a liquid crystal display (LCD) comprises an optical pick-up head (1), an optical signal processing circuit (2), a comparator (3), an LED backlight driving adjusting circuit (5), and a backlight driving configuration chip (6) arranged on an LED backlight LCD (7). The input terminal of the optical signal processing circuit (2) is connected wit the optical pick-up head (1), the output terminal of the optical signal processing circuit (2) and the output terminal of a video signal source (4) are connected with two input ends of the comparator (3), respectively, the output terminal of the comparator (3) is connected with the input terminal of the LED backlight driving adjusting circuit (5), and the output terminal of the LED backlight driving adjusting circuit (5) is connected with the backlight driving configuration chip (6). The LED backlight automatic adjusting device realizes less manual intervention and can adjust brightness uniformity and color temperature of LED backlight; and has the advantages of simple structure and convenient use.
Description
Technical field
The utility model relates to backlight and adjusts the field automatically, particularly a kind of liquid crystal LED-backlit source automatic regulating apparatus.
Background technology
Liquid crystal indicator has been widely used in the individual consumer's goods such as notebook computer, computer monitor, TV owing in light weight, advantages such as volume is little, little power consumption, radiation is low, quality is good at present.Because LCD panel itself does not have the characteristics of luminescence, therefore must on the LCD panel, add a light emitting source, can reach display effect, backlight source module promptly provides the optical module of LCD display back light.The LCD backlight source module can use light-emitting diode (LED), cold-cathode fluorescence lamp (CCFL), external electrode fluorescent lamp (EFFL) etc. as light source.
The backlight of large-screen LCD main flow remains CCFL on the market, but along with development of semiconductor, the particularly appearance of high-power LED chip, LED brightness and efficient have had significant raising, make the LED-backlit source more and more be applied to LCD backlight in.Utilizing led light source is that panel backlight has a lot of advantages as LCD panel backlight than with common CCFL.Wherein the most tangible improvement is the expansion of colour gamut.Use LED-backlit to have broader colour gamut, realize more gorgeous color.But also can realize dynamically controlling the RGB mixed light, and between 9600K and 6500K, adjust white balance, and can sacrificing luminance and contrast.
But LED is a point-source of light, since its individual difference, the inhomogeneity initial adjustment of the LED-backlit source brightness of its composition, and the uniformity adjustment of brightness over time is all very complicated, needs a large amount of manually finishing.The LED-backlit of forming by three look RGB in addition, because that its three coloured light is imitated is different, the adjustment of its colour temperature, and use the drift adjustment of back colour temperature also very complicated for a long time.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, a kind of novel liquid crystal LED-backlit source automatic regulating apparatus is provided, this device adopts full automatic optics and electricity adjustment, realize few manual intervention, can reach the uniformity of the brightness of regulating the LED-backlit source and the purpose that colour temperature is adjusted.
The utility model is achieved through the following technical solutions:
A kind of liquid crystal is with LED-backlit source automatic regulating apparatus, comprises that optics camera 1, optical signalling treatment circuit 2, comparator 3, LED-backlit drive to adjust circuit 5 and be installed in backlight drive configuring chip 6 on the LED-backlit source LCD 7; The input of optical signalling treatment circuit 2 connects optics camera 1, the output of the output of optical signalling treatment circuit 2 and video signal source 4 is connected two inputs of comparator 3 respectively, the output of comparator 3 connects LED-backlit and drives the input of adjusting circuit 5, and LED-backlit drives the output of adjusting circuit 5 and connects backlight drive configuring chip 6.
Beneficial technical effects of the present utility model:
The LED-backlit source automatic regulating apparatus that the utility model relates to has been realized few manual intervention, can reach the uniformity of the brightness of regulating the LED-backlit source and the purpose that colour temperature is adjusted; Have characteristics simple in structure, easy to use.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Embodiment
Come the utility model is done further detailed explanation below in conjunction with accompanying drawing:
As shown in Figure 1, liquid crystal is with LED-backlit source automatic regulating apparatus, comprises that optics camera 1, optical signalling treatment circuit 2, comparator 3, LED-backlit drive to adjust circuit 5 and be installed in backlight drive configuring chip 6 on the LED-backlit source LCD 7; The input of optical signalling treatment circuit 2 connects optics camera 1, the output of the output of optical signalling treatment circuit 2 and video signal source 4 is connected two inputs of comparator 3 respectively, the output of comparator 3 connects LED-backlit and drives the input of adjusting circuit 5, and LED-backlit drives the output of adjusting circuit 5 and connects backlight drive configuring chip 6; Backlight drive configuring chip 6 is installed in the liquid crystal display drive circuit of LED-backlit source.
In the time need adjusting to the LED-backlit source of this display, optics camera 1 is installed in the dead ahead of LED-backlit source LCD 7, make the screen that captures whole LCD that camera can be complete.Video signal source 4 provides the vision signal of standard to LCD, is convenient to collect light echo information and compares.
Claims (2)
1, a kind of liquid crystal LED-backlit source automatic regulating apparatus, it is characterized in that, comprise that optics camera (1), optical signalling treatment circuit (2), comparator (3), LED-backlit drive to adjust circuit (5) and be installed in backlight drive configuring chip (6) on the LED-backlit source LCD (7); The input of optical signalling treatment circuit (2) connects optics camera (1), the output of the output of optical signalling treatment circuit (2) and video signal source (4) is connected two inputs of comparator (3) respectively, the output of comparator (3) connects LED-backlit and drives the input of adjusting circuit (5), and LED-backlit drives the output of adjusting circuit (5) and connects backlight drive configuring chip (6).
2, liquid crystal as claimed in claim 1 is characterized in that with LED-backlit source automatic regulating apparatus backlight drive configuring chip (6) is installed in the drive circuit of LED-backlit source LCD (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202216852U CN201282586Y (en) | 2008-09-28 | 2008-09-28 | Automatic regulating apparatus for LED backlight source of liquid crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202216852U CN201282586Y (en) | 2008-09-28 | 2008-09-28 | Automatic regulating apparatus for LED backlight source of liquid crystal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201282586Y true CN201282586Y (en) | 2009-07-29 |
Family
ID=40929449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202216852U Expired - Fee Related CN201282586Y (en) | 2008-09-28 | 2008-09-28 | Automatic regulating apparatus for LED backlight source of liquid crystal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201282586Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314840A (en) * | 2010-06-30 | 2012-01-11 | 格科微电子（上海）有限公司 | Image sensor, electronic device and backlight adjusting method thereof |
-
2008
- 2008-09-28 CN CNU2008202216852U patent/CN201282586Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314840A (en) * | 2010-06-30 | 2012-01-11 | 格科微电子（上海）有限公司 | Image sensor, electronic device and backlight adjusting method thereof |
| CN102314840B (en) * | 2010-06-30 | 2014-08-20 | 格科微电子（上海）有限公司 | Image sensor, electronic device and backlight adjusting method thereof |
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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 |
Granted publication date: 20090729 Termination date: 20150928 |
|
| EXPY | Termination of patent right or utility model |