CN202126825U - Luminance control device and display - Google Patents
Luminance control device and display Download PDFInfo
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- CN202126825U CN202126825U CN2011202599870U CN201120259987U CN202126825U CN 202126825 U CN202126825 U CN 202126825U CN 2011202599870 U CN2011202599870 U CN 2011202599870U CN 201120259987 U CN201120259987 U CN 201120259987U CN 202126825 U CN202126825 U CN 202126825U
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Abstract
The utility model discloses a luminance control device and display relating to the field of liquid crystal display and realizing intelligent control to the display luminance in accordance with the distance between the display and the human body to improve the display efficiency. The luminance control device comprises an infrared sensing module, a signal processing module, a backlight source driving module and a backlight source orderly connected. The infrared sensing module converts the infrared signal sensed from the human body into a thermoelectric signal, the signal processing module converts the thermoelectric signal from the infrared sensing module into a pulse width modulating signal which is to be converted into a backlight source control signal by the backlight source driving module in order to control illumination of the backlight source. The backlight source illuminates with corresponding luminance in accordance with the backlight source control signal. The infrared sensing module is set on the frame of the display.
Description
Technical field
The utility model relates to field of liquid crystal display, relates in particular to a kind of brightness controlling device and display.
Background technology
Display in the market is a constant brightness when display frame; When the nearer needs of human body range display dim display or range display far need lighten display the time; Usually need manual adjustments and setting, this has brought very big inconvenience for user's use.
For realizing the automatic adjusting of display brightness; Prior art discloses a kind of device that can adjust display brightness according to ambient brightness automatically; Comprise outside brightness acquisition testing module, inter-process module and brightness adjusting module; Outside brightness acquisition testing module collection also detects outside luminance signal, and with flowing to the inter-process module after the outside luminance signal process photoelectricity analog to digital conversion; The inter-process module is handled the luminance signal that outside brightness acquisition testing module transports, through with the brightness value of setting relatively after, calculate and be provided with the output luminance parameter; The brightness adjusting module receives the output luminance parameter that the inter-process module is provided with, and the picture output brightness of display is adjusted.But obviously, the display of prior art is the output brightness that changes display according to brightness on every side, still can not satisfy user's needs.
The utility model content
The embodiment of the utility model technical matters to be solved is to provide a kind of brightness controlling device and display; The brightness that can realize display can be according to the different Based Intelligent Control that change of display with the distance of human body; Thereby improved the display efficiency of display, convenient for users to use.
For solving the problems of the technologies described above, the embodiment of the utility model adopts following technical scheme:
A kind of brightness controlling device; Comprise: the infrared induction module that is connected successively, signal processing module, backlight driver module and backlight; Said infrared induction module is used for converting the infrared signal of sensing from human body into pyroelectric signal; Said signal processing module is used for converting the pyroelectric signal from said infrared induction module into pulse width modulating signal; Said backlight driver module is used for converting said pulse width modulating signal into the backlight control signal to control the luminous of said backlight; Said backlight is used for showing corresponding brightness according to said backlight control signal that said infrared induction module is arranged on the frame of said display.
Said signal processing module comprises signal amplification unit and signal conversion unit, and said signal amplification unit is used to amplify said pyroelectric signal, and said signal conversion unit is used for converting the said pyroelectric signal after amplifying into the thermoelectric pulse signal.
Said signal processing module also comprises pulse width modulating signal generating unit and duty cycle adjustment unit; Said pulse width modulating signal generating unit is connected with said duty cycle adjustment unit, and said duty cycle adjustment unit is used to use the dutycycle of the pulse width modulating signal that the said pulse width modulating signal generating unit of said thermoelectric pulse Signal Regulation produces.
Said infrared induction module comprises pyroelectric infrared sensor.
Said infrared induction module is arranged at the centre position of the downside frame of said display.
A kind of display, said display comprises above-mentioned brightness controlling device.
The brightness controlling device of the utility model embodiment and display; Distance through infrared induction module induction human body produces pyroelectric signal, signal processing module further is treated to the brightness that the pulse width modulating signal with different duty is controlled backlight with pyroelectric signal; The brightness that has realized display can be according to the different Based Intelligent Control that change of display with the distance of human body; Thereby improved the display efficiency of display; Convenient for users to use, effectively protected user's eyesight.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is one of structural representation of brightness controlling device among the utility model embodiment;
Fig. 2 be brightness controlling device among the utility model embodiment structural representation two;
Fig. 3 is the installation site synoptic diagram of infrared induction module among the utility model embodiment;
Fig. 4 is the synoptic diagram of thermoelectric pulse Signal Regulation pulse width modulating signal dutycycle among the utility model embodiment.
Description of reference numerals:
1, infrared induction module 10, pyroelectric infrared sensor 2, signal processing module 21, signal amplification unit 22, signal conversion unit 23, duty cycle adjustment unit 24, pulse width modulation signal generating unit 3, backlight driver module 4, backlight 5, frame 51, downside frame
Embodiment
The utility model embodiment provides a kind of brightness controlling device and display, has realized that the brightness of display can be according to the different Based Intelligent Control that change of display with the distance of human body, thereby has improved the display efficiency of display, and is convenient for users to use.
Below in conjunction with accompanying drawing the utility model embodiment is done detailed description.
Embodiment one
Present embodiment provides a kind of brightness controlling device; As shown in Figure 1; Comprise: infrared induction module 1, signal processing module 2, backlight 4 and be used to control the luminous backlight driver module 3 of said backlight; Infrared induction module 1, signal processing module 2, backlight driver module 3 and backlight 4 are connected successively, and be as shown in Figure 3, and infrared induction module 1 is arranged on the frame 5 of display; Infrared induction module 1 is used for converting the infrared signal that the human body of sensing sends into pyroelectric signal; Signal processing module 2 is used for the pyroelectric signal that infrared induction module 1 sends over is treated to the pulse width modulating signal of controlling back light source driver module 3, and backlight driver module 3 is used for converting pulse width modulating signal into the backlight control signal, further controls the luminous of backlight; Backlight 4 is used for showing corresponding brightness according to the backlight control signal, thereby realizes the control to display brightness.
Do further to introduce in the face of present embodiment down.
As shown in Figure 2, infrared induction module 1 further comprises pyroelectric infrared sensor 10.Pyroelectric infrared sensor 10 mainly is the material by a kind of high Seebeck coefficient, processes the detecting element that is of a size of 2*1mm like lead zirconate titanate system pottery, lithium tantalate, triglycine sulfate etc.Usually one or two detecting element of need packing in each infrared induction module 1, and two detecting elements are connected with reversed polarity, to suppress because the interference that self temperature rising produces.The infrared radiation of the human body that detecting element will be surveyed and receive is transformed into faint voltage signal, and promptly pyroelectric signal is outwards exported after FET amplifies.
A kind of embodiment as the utility model; As shown in Figure 4, when the human body range display was nearer, corresponding thermoelectric pulse voltage of signals value was bigger; The time of pulse width modulating signal (PWM_1) the output high level after regulating is shorter relatively; Dutycycle is less, i.e. the average voltage of signal processing module 2 outputs is less, so backlight is darker; Otherwise when the human body range display was far away, pulse width modulating signal (PWM_2) dutycycle was bigger, and backlight is brighter.
After regulating, pulse width modulating signal that is to say with regard to the signal that the variation that becomes with the thermoelectric pulse signal changes, after adjusting, and the signal that pulse width modulating signal changes with regard to the distance that becomes with the human body distance.
Pulse width modulating signal after regulating is further controlled the backlight driver module, and the backlight driver module is sent the brightness of backlight control signal control backlight, finally realizes the purpose of pulse width modulating signal control backlight light and shade.
Further, as shown in Figure 3, in order to judge the distance of human body and display more accurately, infrared induction module 1 is arranged at the centre position of the downside frame 51 of display.Consider people's behavioural habits, infrared induction module 1 is arranged at the centre position of the downside frame 51 of display, more can embody the mean distance of human body and display, maximized avoiding because the error that human body brings when being positioned at the display different directions.
The brightness controlling device of present embodiment; Pyroelectric signal, signal processing module that distance through infrared induction module induction human body changes further are treated to the brightness that the pulse width modulating signal with different duty is controlled backlight with the pyroelectric signal that changes; Dutycycle hour, backlight is darker, when dutycycle is big; Backlight is brighter; The brightness that has realized display can be according to the different Based Intelligent Control that change of display with the distance of human body, thereby improved the display efficiency of display, and is convenient for users to use.In addition, the infrared induction module is arranged at the centre position of the downside frame of display, can judges the distance of human body and display more accurately.
Embodiment two
Present embodiment provides a kind of display; Comprise brightness controlling device, wherein, as shown in Figure 1; The brightness controlling device of display further comprises: infrared induction module 1, signal processing module 2, backlight 4 and be used to control the luminous backlight driver module 3 of said backlight; Infrared induction module 1, signal processing module 2, backlight driver module 3 and backlight 4 are connected successively, and be as shown in Figure 3, and infrared induction module 1 is arranged on the frame 5 of display; Infrared induction module 1 is used for converting the infrared signal that the human body of sensing sends into pyroelectric signal; Signal processing module 2 is used for the pyroelectric signal that infrared induction module 1 sends over is treated to the pulse width modulating signal of controlling back light source driver module 3, and backlight driver module 3 is used for converting pulse width modulating signal into the backlight control signal, further controls the luminous of backlight; Backlight 4 is used for showing corresponding brightness according to the backlight control signal, thereby realizes the control to display brightness.
Display in the present embodiment can be a LCD, for example the display of equipment such as televisor, computer, mobile phone.
The display of present embodiment; The pyroelectric signal, the signal processing module that change through the induction of the infrared induction module in brightness controlling device human body distance further are treated to the brightness that the pulse width modulating signal with different duty is controlled backlight with the pyroelectric signal that changes; Dutycycle hour, backlight is darker, when dutycycle is big; Backlight is brighter; The brightness that has realized display can be according to the different Based Intelligent Control that change of display with the distance of human body, thereby improved the display efficiency of display, and is convenient for users to use.
Description through above embodiment; The those skilled in the art can be well understood to the utility model and can realize by the mode that software adds essential common hardware; Can certainly pass through hardware, but the former is better embodiment under a lot of situation.Based on such understanding; The part that the technical scheme of the utility model contributes to prior art in essence in other words can be come out with the embodied of software product, and this computer software product is stored in the storage medium that can read, like the floppy disk of computing machine; Hard disk or CD etc.; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the utility model.
The above; Be merely the embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field can expect changing or replacement in the technical scope that the utility model discloses easily, all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion by said protection domain with claim.
Claims (6)
1. brightness controlling device; It is characterized in that; Comprise: the infrared induction module that is connected successively, signal processing module, backlight driver module and backlight; Said infrared induction module is used for converting the infrared signal of sensing from human body into pyroelectric signal; Said signal processing module is used for converting the pyroelectric signal from said infrared induction module into pulse width modulating signal; Said backlight driver module is used for converting said pulse width modulating signal into the backlight control signal to control the luminous of said backlight, and said backlight is used for showing corresponding brightness according to said backlight control signal that said infrared induction module is arranged on the frame of said display.
2. the brightness controlling device of display according to claim 1; It is characterized in that; Said signal processing module comprises signal amplification unit and signal conversion unit; Said signal amplification unit is used to amplify said pyroelectric signal, and said signal conversion unit is used for converting the said pyroelectric signal after amplifying into the thermoelectric pulse signal.
3. the brightness controlling device of display according to claim 2; It is characterized in that; Said signal processing module also comprises pulse width modulating signal generating unit and duty cycle adjustment unit; Said pulse width modulating signal generating unit is connected with said duty cycle adjustment unit, and said duty cycle adjustment unit is used to use the dutycycle of the pulse width modulating signal that the said pulse width modulating signal generating unit of said thermoelectric pulse Signal Regulation produces.
4. the brightness controlling device of display according to claim 1 is characterized in that, said infrared induction module comprises pyroelectric infrared sensor.
5. the brightness controlling device of display according to claim 1 is characterized in that, said infrared induction module is arranged at the centre position of the downside frame of said display.
6. a display is characterized in that, said display comprises any described brightness controlling device of claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202599870U CN202126825U (en) | 2011-07-21 | 2011-07-21 | Luminance control device and display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202599870U CN202126825U (en) | 2011-07-21 | 2011-07-21 | Luminance control device and display |
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| CN202126825U true CN202126825U (en) | 2012-01-25 |
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| CN2011202599870U Expired - Lifetime CN202126825U (en) | 2011-07-21 | 2011-07-21 | Luminance control device and display |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021319A (en) * | 2012-12-24 | 2013-04-03 | 广东威创视讯科技股份有限公司 | Screen energy-saving display method and screen energy-saving display device |
| CN104080252A (en) * | 2014-07-02 | 2014-10-01 | 成都零点六一八科技有限公司 | Intelligent switch with human body approaching perceptive function |
| CN104661397A (en) * | 2013-11-21 | 2015-05-27 | 广东美的集团芜湖制冷设备有限公司 | Key backlight lamp adjusting system and adjusting method |
| CN104851413A (en) * | 2014-02-15 | 2015-08-19 | 岳景睿 | Infrared induction brightness control circuit |
| CN113640893A (en) * | 2021-08-13 | 2021-11-12 | 西安超越申泰信息科技有限公司 | Infrared induction display |
-
2011
- 2011-07-21 CN CN2011202599870U patent/CN202126825U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021319A (en) * | 2012-12-24 | 2013-04-03 | 广东威创视讯科技股份有限公司 | Screen energy-saving display method and screen energy-saving display device |
| CN103021319B (en) * | 2012-12-24 | 2016-02-24 | 广东威创视讯科技股份有限公司 | A kind of saving energy of screen display packing and device |
| CN104661397A (en) * | 2013-11-21 | 2015-05-27 | 广东美的集团芜湖制冷设备有限公司 | Key backlight lamp adjusting system and adjusting method |
| CN104851413A (en) * | 2014-02-15 | 2015-08-19 | 岳景睿 | Infrared induction brightness control circuit |
| CN104080252A (en) * | 2014-07-02 | 2014-10-01 | 成都零点六一八科技有限公司 | Intelligent switch with human body approaching perceptive function |
| CN113640893A (en) * | 2021-08-13 | 2021-11-12 | 西安超越申泰信息科技有限公司 | Infrared induction display |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150625 Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150625 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150625 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176 Beijing economic and Technological Development Zone, West Central Road, No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120125 |