CN203232682U - Liquid crystal backlight control system and liquid crystal TV - Google Patents
Liquid crystal backlight control system and liquid crystal TV Download PDFInfo
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- CN203232682U CN203232682U CN 201220666368 CN201220666368U CN203232682U CN 203232682 U CN203232682 U CN 203232682U CN 201220666368 CN201220666368 CN 201220666368 CN 201220666368 U CN201220666368 U CN 201220666368U CN 203232682 U CN203232682 U CN 203232682U
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Abstract
The utility model provides a liquid crystal backlight control system and a liquid crystal TV, wherein the liquid crystal backlight control system comprises a photoresponse module, a processing module and a backlight control module; the photoresponse module senses environment light brightness and outputs electric signals corresponding to the brightness to the processing module; the processing module outputs control signals corresponding to electric signals to the backlight control module; and the photoresponse module comprises at least two light sensing elements arranged on side edges of the liquid crystal screen. The plurality of light sensing elements of the photoresponse module can sense environment light brightness around the liquid crystal screen, so environment light conditions around the liquid crystal screen can be more comprehensively reflected, and regional backlight adjustment is carried out to the liquid crystal screen, a purpose of intelligently controlling liquid crystal screen backlight is truly realized, thereby improving display effects of the liquid crystal screen, and alleviating visual fatigue of viewers.
Description
Technical field
The utility model belongs to technical field of television sets, particularly a kind of LCD backlight control system and utilize this system to adjust the LCD TV of backlight illumination.
Background technology
The adjusting of LCD screen backlight illumination directly influences its display effect, also influences beholder's visual experience simultaneously.
LCD TV can change according to the power of surround lighting, adjusts backlight illumination automatically.The way of prior art is, at the bottom position of televisor front panel 1 light sensation device is installed, and by the variation of this light sensation device induced environment luminance brightness, the backlight illumination of control TV changes thereupon.
But, the sensitive volume of light sensation device is limited, the situation of change that only can reflect the surround lighting in the limited area around it only depends on this 1 light sensation device can not reflect the situation of televisor surrounding environment light all sidedly, and is particularly all the more so for Large-size LCD Screen.Thereby it is irrational carrying out backlight control according to the environmental light brightness value of this light sensation device acquisition.
The utility model content
The purpose of this utility model is to provide a kind of LCD television set backlight control system, has solved existing light sensation module reflecting liquid crystal screen ambient brightness on every side comprehensively, causes the irrational technical matters of liquid crystal display adjustment backlight.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of LCD backlight control system, comprise photoinduction module, processing module and backlight control module, wherein, the brightness of photoinduction module induced environment light, and the output electric signal corresponding with the brightness of surround lighting be to processing module, and processing module output is corresponding with electric signal controls signal to backlight control module.The photoinduction module comprises at least two light sensation devices that are arranged in the liquid crystal display side, and the side of liquid crystal display comprises upper and lower side and left and right side.
As the further improvement of such scheme, liquid crystal display comprises at least two backlight area that are subjected to backlight control module control, and each backlight area is adjusted backlight according to the environmental light brightness of at least one the light sensation device induction close with it.
In order to obtain better effect backlight, the number of backlight area is not less than a number of light sensation device.When a number of the number of backlight area and light sensation device is identical, the corresponding light sensation device of each backlight area, then light sensation device induced environment luminance brightness is also exported the electric signal corresponding with brightness to processing module, processing module is exported the control signal to backlight control module corresponding with electric signal, backlight control module is controlled corresponding backlight area, and the backlight illumination of this backlight area is adjusted.When the number of backlight area during greater than the number of light sensation device, there have the brightness of the backlight area of light sensation device correspondence to adjust to be same as above, carries out the brightness adjustment after not having the backlight area of light sensation device correspondence then to average according to the light sensation device detected value of adjacent area.
Preferably, the backlight of liquid crystal display is direct LED backlight.
As the further improvement of such scheme, the light sensation device is arranged on the housing of liquid crystal display.
Further, described light sensation device is arranged on the housing in liquid crystal display front.
Further, the housing of described light sensation device in the liquid crystal display front is symmetrically distributed.
Wherein, the light sensation device is digital light sensation and/or simulation light sensation.
When the light sensation device adopted digital light sensation, digital light sensation passed through I
2C bus and processing module are joined, and can simplify signal acquisition circuit.
Based on the design of above-mentioned LCD television set backlight control system, the utility model has also proposed a kind of LCD TV, and LCD TV comprises backlight control system, and backlight control system is adjusted backlight according to the environmental light brightness of photoinduction module induction.Backlight control system comprises photoinduction module, processing module and backlight control module, wherein, the brightness of photoinduction module induced environment light, and the output electric signal corresponding with the brightness of surround lighting be to processing module, processing module output is corresponding with electric signal controls signal to backlight control module.The photoinduction module comprises at least two light sensation devices that are arranged in the liquid crystal display side, and the side of liquid crystal display comprises upper and lower side and left and right side.
Compared with prior art, advantage of the present utility model and good effect are: the photoinduction module of the utility model LCD backlight control system comprises many light sensation devices.Like this, every light sensation device is responded to the brightness of its surrounding environment light separately and is exported electric signal to processing module, and processing module output controls signal to backlight control module accordingly, and backlight control module is controlled corresponding backlight area and carried out adjustment backlight.Thereby, the utility model can reflect the ambient light conditions around the liquid crystal display more all sidedly, on this basis and carry out subregion adjustment backlight, can really realize the purpose that the Based Intelligent Control liquid crystal display is backlight, thereby improve the display effect of liquid crystal display, slow down beholder's visual fatigue.
After reading the detailed description of the utility model embodiment by reference to the accompanying drawings, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
Fig. 1 is the theory diagram of the utility model specific embodiment LCD backlight control system.
Fig. 2 is the structural representation that a kind of specific embodiment light sensation of the utility model device distributes.
Fig. 3 is the synoptic diagram that a kind of specific embodiment light sensation of the utility model zone is divided.
Fig. 4 is the structural representation that the another kind of specific embodiment light sensation of the utility model device distributes.
Fig. 5 is the synoptic diagram that the another kind of specific embodiment light sensation of the utility model zone is divided.
Fig. 6 is the structural representation that the third specific embodiment light sensation device of the utility model distributes.
Fig. 7 is the synoptic diagram that the third specific embodiment light sensation zone of the utility model is divided.
Embodiment
As shown in Figure 1, the LCD backlight control system comprises photoinduction module, processing module 400 and backlight control module 500, and wherein, the photoinduction module comprises light sensation device 1, light sensation device 2 ..., light sensation device N.The number of light sensation device can be selected according to the size of liquid crystal display.The light sensation device links to each other with processing module 400, processing module 400 can read the detected environmental light brightness value of each light sensation device at any time, and output control signals to backlight control module 500 according to detected environmental light brightness value, corresponding backlight area on the backlight control module control liquid crystal display is carried out adjustment backlight to this backlight area.
The light sensation device can adopt the simulation light sensation, also can adopt digital light sensation, also can adopt simulation light sensation and digital light sensation simultaneously.Because the accuracy of detection of digital light sensation is higher, under the low light level or low-light environment, also can operate as normal; And digital light sensation has I
2C interface, can be directly and processing module communicate, a plurality of digital light sensor spares can be articulated to an I
2On the C bus, thereby corresponding signal acquisition circuit is simplified greatly.Thereby, preferably adopt digital light sensation.
Be that example describes in detail embodiment of the present utility model below with the LCD TV.
Specific embodiment 1:
When the size of liquid crystal display hour, can adopt a spot of light sensation device.As shown in Figure 2, LCD TV comprises television housing 100 and liquid crystal display 200, and light sensation 1 and light sensation 2 are installed on the housing 100 in TV liquid crystal display front, wherein, light sensation 1 is positioned at the lower side of liquid crystal display 200, and light sensation 2 is positioned at the upper side edge of liquid crystal display 200, and light sensation 1 and light sensation 2 are symmetrically distributed.The backlight of liquid crystal display is direct LED backlight, and liquid crystal display is divided into two backlight area according to the distribution of light sensation device: backlight area 1 and backlight area 2, as shown in Figure 3.Suppose that light sensation 1, light sensation 2 detected environmental light brightness values are respectively L1, L2, then backlight area 1, backlight area 2 serve as according to carrying out backlight control with light sensation 1, light sensation 2 detected environmental light brightness value L1, L2 respectively.Be specially, processing module 400 is according to environmental light brightness value L1, and L2 output controls signal to backlight control module 500 accordingly, backlight control module 500 control backlight area 1, and backlight area 2 is carried out the adjustment of backlight illumination.
Specific embodiment 2:
When the size of liquid crystal display increases, can suitably increase the number of light sensation device.As shown in Figure 4, LCD TV comprises television housing 100 and liquid crystal display 200, light sensation 1, light sensation 2, light sensation 3 and light sensation 4 is installed, wherein on the housing 100 in TV liquid crystal display front, light sensation 1 and light sensation 2 are positioned at the upper side edge of liquid crystal display 200, and light sensation 3 and light sensation 4 are positioned at the lower side of liquid crystal display 200.The backlight of liquid crystal display is direct LED backlight, and liquid crystal display is divided into four backlight area according to the distribution of light sensation device, backlight area 1, backlight area 2, backlight area 3 and backlight area 4, as shown in Figure 5.Suppose that four detected environmental light brightness values of light sensation device are respectively L1, L2, L3, L4, then backlight area 1, backlight area 2, backlight area 3, backlight area 4 serve as according to carrying out backlight control with light sensation 1, light sensation 2, light sensation 3, light sensation 4 detected environmental light brightness value L1, L2, L3, L4 respectively.Be specially, processing module 400 is according to environmental light brightness value L1, L2, L3, L4 output control signal to backlight control module 500 accordingly, backlight control module 500 control backlight area 1, and backlight area 2, backlight area 3, backlight area 4 are carried out the adjustment of backlight illumination.
Specific embodiment 3:
When the size of liquid crystal display was big, for example present oversize was more than 60 cun, for the environmental light brightness around the reflecting liquid crystal screen more all sidedly, preferably increased a number of light sensation device.As shown in Figure 6, present embodiment is arranged ten light sensation devices at the LCD TV housing, ten approximate being evenly distributed on the housing 100 in TV front of light sensation device 1-10.Wherein, the upper and lower both sides of liquid crystal display 200 are furnished with three respectively, and the and arranged on left and right sides of liquid crystal display 200 is furnished with two respectively.The backlight of liquid crystal display is direct LED backlight, in order to realize dynamically adjusting according to the detected environmental light brightness of photoinduction module the purpose of liquid crystal display backlight illumination, present embodiment is divided into 12 backlight area with liquid crystal display according to the distribution of light sensation device, as shown in Figure 7.
Backlight control process to the liquid crystal display of present embodiment describes, and supposes that 10 detected environmental light brightness values of light sensation device are respectively: L1, and L2, L3 ..., L10.Then backlight area 1, backlight area 2, and backlight area 3 ..., backlight area 10 is respectively with light sensation device 1, light sensation 2 ..., light sensation 10 detected environmental light brightness value L1, L2, L3 ..., L10 is for according to carrying out backlight control.Backlight area 11 and backlight area 12 are not adjacent with any one light sensation device, and the backlight control of these two backlight area obtains according to the average back of the light sensation detected value that can pass through adjacent area, that is:
L11=(L1+L2+L3+L4+L10)/5;
L12=(L5+L6+L7+L8+L9)/5;
Thereby processing module 400 is according to environmental light brightness value L1, L2, L3, ..., L12 output controls signal to control backlight control module 500 accordingly, backlight control module 500 control backlight area 1, backlight area 2, ..., backlight area 12 is carried out the adjustment of backlight illumination.
Certainly, the number of light sensation device and arrangement only are three kinds of embodiments of the present utility model among above-mentioned three embodiment, still, are not limited to aforesaid way.In concrete implementation process, can be according to size and the environment for use of liquid crystal display, the quantity of light sensation device and arrangement can be adjusted accordingly.
Equally, among above-mentioned three embodiment, it only is three kinds of embodiments of the present utility model that backlight area is divided, and is not limited to aforesaid way.In concrete implementation process, can determine to divide the method for backlight area according to actual conditions.
In sum, LCD backlight control system provided by the utility model and LCD TV can more comprehensively be responded to the brightness of liquid crystal display surrounding environment light, and realize subregion Based Intelligent Control liquid crystal display purpose backlight according to the power of surround lighting.Have good display, can effectively avoid visual fatigue, build and better watch environment.Certainly, LCD backlight control system of the present utility model can be widely used in the various electric equipment products of using liquid crystal display to make, and is not limited to LCD TV.
It should be noted that at last: above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to previous embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (10)
1. LCD backlight control system, comprise photoinduction module, processing module and backlight control module, the brightness of described photoinduction module induced environment light is also exported the electric signal corresponding with described brightness to described processing module, described processing module is exported the control signal to described backlight control module corresponding with described electric signal, it is characterized in that: described photoinduction module comprises at least two light sensation devices, and described light sensation device is arranged in the side of liquid crystal display.
2. LCD backlight control system according to claim 1, it is characterized in that: described liquid crystal display comprises at least two backlight area that are subjected to backlight control module control, and each backlight area is adjusted backlight according to the environmental light brightness of at least one the light sensation device induction close with it.
3. LCD backlight control system according to claim 2, it is characterized in that: the number of described backlight area is not less than a number of light sensation device.
4. LCD backlight control system according to claim 2, it is characterized in that: the backlight of described liquid crystal display is direct LED backlight.
5. LCD backlight control system according to claim 1, it is characterized in that: described light sensation device is arranged on the housing of liquid crystal display.
6. LCD backlight control system according to claim 5, it is characterized in that: described light sensation device is arranged on the housing in liquid crystal display front.
7. LCD backlight control system according to claim 6 is characterized in that, the housing of described light sensation device in the liquid crystal display front is symmetrically distributed.
8. according to any described LCD backlight control system of claim 1-7, it is characterized in that: described light sensation device is digital light sensation and/or simulation light sensation.
9. LCD backlight control system according to claim 8, it is characterized in that: described digital light sensation passes through I
2C bus and processing module are joined.
10. LCD TV, it is characterized in that: described LCD TV comprises any described LCD backlight control system of claim 1-9, adjusts backlight according to the environmental light brightness of described photoinduction module induction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220666368 CN203232682U (en) | 2012-12-06 | 2012-12-06 | Liquid crystal backlight control system and liquid crystal TV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220666368 CN203232682U (en) | 2012-12-06 | 2012-12-06 | Liquid crystal backlight control system and liquid crystal TV |
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| CN203232682U true CN203232682U (en) | 2013-10-09 |
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| CN 201220666368 Expired - Lifetime CN203232682U (en) | 2012-12-06 | 2012-12-06 | Liquid crystal backlight control system and liquid crystal TV |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916259A (en) * | 2014-03-13 | 2015-09-16 | 海信集团有限公司 | Method of controlling brightness of display screen of medical display, device and medical display |
| CN105469749A (en) * | 2016-01-15 | 2016-04-06 | 京东方科技集团股份有限公司 | Liquid crystal display and display device |
| CN106548755A (en) * | 2016-12-07 | 2017-03-29 | 惠州三华工业有限公司 | Brightness adjust automatically display device |
| CN106782363A (en) * | 2016-12-07 | 2017-05-31 | 惠州三华工业有限公司 | Dimmer display |
| CN112102791A (en) * | 2020-10-30 | 2020-12-18 | 重庆长安汽车股份有限公司 | Vehicle-mounted display screen partition brightness adjusting system and control method |
-
2012
- 2012-12-06 CN CN 201220666368 patent/CN203232682U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916259A (en) * | 2014-03-13 | 2015-09-16 | 海信集团有限公司 | Method of controlling brightness of display screen of medical display, device and medical display |
| CN104916259B (en) * | 2014-03-13 | 2019-09-17 | 海信集团有限公司 | Control the method, apparatus and medical display of the brightness of display screen of medical display |
| CN105469749A (en) * | 2016-01-15 | 2016-04-06 | 京东方科技集团股份有限公司 | Liquid crystal display and display device |
| CN105469749B (en) * | 2016-01-15 | 2017-11-10 | 京东方科技集团股份有限公司 | A kind of liquid crystal display and display device |
| US10663778B2 (en) | 2016-01-15 | 2020-05-26 | Boe Technology Group Co., Ltd. | Liquid crystal display and display device |
| CN106548755A (en) * | 2016-12-07 | 2017-03-29 | 惠州三华工业有限公司 | Brightness adjust automatically display device |
| CN106782363A (en) * | 2016-12-07 | 2017-05-31 | 惠州三华工业有限公司 | Dimmer display |
| CN106782363B (en) * | 2016-12-07 | 2019-03-05 | 惠州三华工业有限公司 | Dimmer display |
| CN106548755B (en) * | 2016-12-07 | 2019-11-26 | 惠州三华工业有限公司 | Brightness adjust automatically display device |
| CN112102791A (en) * | 2020-10-30 | 2020-12-18 | 重庆长安汽车股份有限公司 | Vehicle-mounted display screen partition brightness adjusting system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Video Technology Co.,Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131009 |
|
| CX01 | Expiry of patent term |