CN102117582A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN102117582A CN102117582A CN2009103128383A CN200910312838A CN102117582A CN 102117582 A CN102117582 A CN 102117582A CN 2009103128383 A CN2009103128383 A CN 2009103128383A CN 200910312838 A CN200910312838 A CN 200910312838A CN 102117582 A CN102117582 A CN 102117582A
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- optical sheet
- light
- main body
- liquid crystal
- display screen
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Abstract
The invention relates to a liquid crystal display device, which comprises a main body, a display screen, a backlight source, a controller and an environment lighting sensor. The display screen is arranged on the main body. The backlight source is arranged inside the main body and supplies light to the display screen. The environment lighting sensor is arranged on the main body. The environment lighting sensor comprises a lens cone, an optical sheet and a light-sensitive unit. The light-sensitive unit receives incident environment lighting through the optical sheet and generates a signal value according to the light intensity. The light-sensitive unit sends the signal value to the controller. The controller controls the light intensity of the backlight source according to the signal value. The optical sheet comprises a first surface and a second surface opposite to the first surface. The first surface is an incident light surface, and the second surface is a plane. A plurality of strip-shaped V-shaped microstructures are formed on the first surface of the optical sheet. The liquid crystal display device has higher environment lighting sensitivity.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, relate in particular to a kind of liquid crystal indicator with surround lighting sensing function.
Background technology
A kind of liquid crystal indicator, it comprises display screen, main body, backlight, controller and surround lighting sensor.Wherein, display screen is arranged on the surface of main body, and the surround lighting sensor is arranged on the position of close display screen on this main body.Backlight and controller all are arranged in this main body, and this surround lighting sensor comprises transparency protected, lens barrel and photosensitive unit.This transparency protected is a transparent plate.This transparency protected with photosensitive unit be separately positioned on the lens barrel two ends.The light of external environment condition is incident on the photosensitive unit through transparency protected, lens barrel; photosensitive unit produces a signal value, and is sent to controller, and controller is adjusted the brightness of this backlight according to this signal value; and then the brightness of adjustment display screen, reach better visual effect.
If the light source of surround lighting is positioned at the side of the surround lighting sensor of above-mentioned liquid crystal indicator; the incident angle that the light incident that light source sent of surround lighting is transparency protected is bigger; total reflection can take place in most light on transparency protected bottom surface; and can't incide on the photosensitive unit; influence sensing result, so the surround lighting sensor sensitivity of this liquid crystal indicator is not high.
Summary of the invention
In view of foregoing, be necessary to provide a kind of surround lighting sensing sensitivity higher liquid crystal indicator.
A kind of liquid crystal indicator, it comprises main body, display screen, backlight, controller and surround lighting sensor.Display screen is arranged on the main body.Backlight is arranged in this main body and also supplies light for display screen.The surround lighting sensor is arranged on the main body.The surround lighting sensor comprises lens barrel, optical sheet and photosensitive unit.Photosensitive unit receives the surround lighting of incident and produces a signal value according to light intensity by this optical sheet.Photosensitive unit sends this signal value to controller.Controller is controlled this backlight according to this signal value and is gone out light intensity.Optical sheet comprises first surface and and first surface opposing second surface.First surface is an incidence surface, and second surface is the plane.Optical sheet is formed with a plurality of strip V-arrangement microstructures on this first surface.
The surround lighting sensor of above-mentioned liquid crystal indicator is provided with optical sheet, be formed with the V-arrangement microstructure on the optical sheet, can effectively reduce the total reflection of incident light on second surface, increase the light intensity that is incident on this photosensitive unit, improve of the sensitivity of surround lighting sensor the surround lighting sensing.
Description of drawings
Fig. 1 is the liquid crystal indicator schematic perspective view of embodiment of the present invention.
Fig. 2 is the sectional view of embodiment of the present invention liquid crystal indicator.
Fig. 3 is the index path in the optical sheet of light incident liquid crystal indicator of the present invention.
The main element symbol description
| |
21 |
| |
22 |
| |
23 |
| |
24 |
| The surround lighting sensor | 26 |
| Liquid crystal indicator | 100 |
| |
261 |
| Lens barrel | 263 |
| Photosensitive unit | 265 |
| |
2611 |
| |
2613 |
| The V- |
2614 |
| First plane of |
2615 |
| Second plane of |
2616 |
Embodiment
Below in conjunction with drawings and the embodiments liquid crystal indicator of the present invention is described in further detail.
Please be simultaneously referring to Fig. 1 and Fig. 2, liquid crystal indicator 100 of the present invention comprises main body 21, display screen 22, backlight 23, controller 24 and surround lighting sensor 26.
Surround lighting sensor 26 comprises optical sheet 261, lens barrel 263 and photosensitive unit 265.Optical sheet 261 comprises first surface 2611 and second surface 2613, and is formed with the V-arrangement microstructure 2614 of a plurality of parallel strips on first surface 2611, and second surface 2613 is the plane.The vertex angle theta of this V-arrangement microstructure 2614 can change between 0 ~ 90 degree.In the present embodiment, the vertex angle theta of this V-arrangement microstructure 2614 is 45 degree.Lens barrel 263 roughly is truncated cone-shaped, and optical sheet 261 lids are located at the bigger end of these lens barrel 263 radiuses, and V-arrangement microstructure 2614 is extended towards the direction away from lens barrel 263.Photosensitive unit 265 is arranged on the other end of lens barrel 263.
Surround lighting sensor 26 is arranged in the main body 21 positions near display screens 22, and optical sheet 261 parts are exposed to main body 21, makes photosensitive unit 265 receive extraneous lights by optical sheet 261.Extraneous light is from first surface 2611 incidents, and V-arrangement microstructure 2614 is adjusted the direction of propagation (back is described in detail) of this incident ray, and incident ray is propagated in lens barrel 263, finally is incident on the photosensitive unit 265.Photosensitive unit 265 is converted into value of electrical signals with the light intensity signal of this light, and is sent to controller 24.Controller 24 is controlled the strength of current of backlight 23 according to this value of electrical signals, and then regulates the brightness of this backlight 23, and the brightness of display screen 22 and surround lighting are adapted, and reaches preferable visual effect.
See also Fig. 3, V-arrangement microstructure 2614 have first plane of incidence 2615 that tilts with respect to this first surface 2611 and with second plane of incidence 2616 of these first surface 2611 adjacency, this second plane of incidence 2616 is vertical with respect to this first surface 2611.The vertex angle theta of V-arrangement microstructure 2614 is promptly by first plane of incidence 2615 and second plane of incidence, 2616 crossing formation.First surface 2611 is an incidence surface, light a is incident on first plane of incidence 2615 with bigger light inlet angle, after the repeatedly refraction on a plurality of V-arrangement microstructures 2614, its direction of propagation is towards the direction deviation perpendicular to optical sheet 261, when this light a incides the second surface 2613 of optical sheet 261, total reflection may can not take place less than the critical angle of optical sheet 261 in its angle, can directly propagate, finally be incident on the photosensitive unit 265 by second surface 2613 and in lens barrel 263.For general light b, its incident angle is less than the critical angle of optical sheet 261, and V-arrangement microstructure 2614 does after the deflection it slightly by second surface 2613 outgoing, is finally received by photosensitive unit 265.Light c is incident on second plane of incidence 2616 with big light inlet angle, generation total reflection in V-arrangement microstructure 2614 in then, after light c will be diverted, from second surface 2613 outgoing to photosensitive unit 265.So V-arrangement microstructure 2614 can reduce the total reflection light on optical sheet 261 second surfaces 2613, effectively increase the transmitted light intensity of wide-angle incident light.Like this, the luminous sensitivity of surround lighting sensor 26 can obtain increasing, for the light source that is positioned at surround lighting sensor 26 sides, surround lighting sensor 26 also can sense and output signal to controller 24,24 pairs of backlights 23 of controller go out light intensity adjustment, improve the visual effect of display screen 22.
Sensing effect for test atmosphere OPTICAL SENSORS 26; utilizing out light intensity is that the light source (figure do not show) of 300 lumens sends a parallel beam; shine existing surround lighting sensor with different incident angles; be only have on the lens barrel transparency protected and do not establish the surround lighting sensor of optical sheet 261; shine the surround lighting sensor (sample 1) of the optical sheet 261 that adopts 10 degree drift angle V-arrangement microstructures 2614 more in the same manner and adopt the 20 surround lighting sensors (sample 2) of spending drift angle V-arrangement microstructures; (unit: lumen), light beam light inlet angle is the incident angle of light with respect to transparency protected bottom surface or optical sheet first surface 2611 to the light intensity of institute's sensing on the test photosensitive unit.
As can be seen from the above table, for the incident light of different angles, optical sheet all has tangible light enhancing effect, and the light inlet angle is big more, and light enhancing effect is obvious more.
Certainly, second plane of incidence 2616 of V-arrangement microstructure 2614 also can be the dip plane, can realize same effect equally.
In addition, those skilled in the art also can do other variation in spirit of the present invention.Certainly, the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.
Claims (4)
1. liquid crystal indicator, it comprises main body, display screen, backlight, controller and ambient light sensor, this display screen is arranged on this main body, this backlight is arranged in this main body and also supplies light for this display screen, this ambient light sensor is arranged on this main body, this ambient light sensor comprises lens barrel, optical sheet and photosensitive unit, this photosensitive unit receives the surround lighting of incident and produces a signal value according to light intensity by this optical sheet, photosensitive unit sends this signal value to this controller, this controller is controlled this backlight according to this signal value and is gone out light intensity, optical sheet comprises the second surface away from the first surface of this photosensitive unit and relative with this first surface and close this photosensitive unit, this second surface is the plane, it is characterized in that: this optical sheet is formed with a plurality of strip V-arrangement microstructures on this first surface.
2. liquid crystal indicator as claimed in claim 1 is characterized in that: this V-arrangement microstructure has first plane of incidence that tilts with this first surface and reaches second plane of incidence vertical with this first surface.
3. liquid crystal indicator as claimed in claim 1 is characterized in that: the drift angle of this V-arrangement microstructure is between 0 ~ 90 degree.
4. liquid crystal indicator as claimed in claim 3 is characterized in that: the drift angle of this V-arrangement microstructure is 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103128383A CN102117582A (en) | 2009-12-31 | 2009-12-31 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103128383A CN102117582A (en) | 2009-12-31 | 2009-12-31 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102117582A true CN102117582A (en) | 2011-07-06 |
Family
ID=44216328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103128383A Pending CN102117582A (en) | 2009-12-31 | 2009-12-31 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102117582A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352903A (en) * | 2016-08-19 | 2017-01-25 | 深圳市金立通信设备有限公司 | Light sensor, terminal and installation method of light sensor |
| CN107911506A (en) * | 2017-11-22 | 2018-04-13 | 维沃移动通信有限公司 | Mobile terminal and its adjusting method of screen display brightness |
| CN108227067A (en) * | 2017-11-13 | 2018-06-29 | 矽力杰半导体技术(杭州)有限公司 | A kind of optical texture and the electronic equipment with the optical texture |
| CN109192153A (en) * | 2018-08-31 | 2019-01-11 | 维沃移动通信有限公司 | A kind of terminal and terminal control method |
| CN109246261A (en) * | 2018-09-14 | 2019-01-18 | 维沃移动通信有限公司 | Terminal and photosensitive control method for terminal |
| CN111294435A (en) * | 2020-02-24 | 2020-06-16 | Oppo广东移动通信有限公司 | Mobile terminal |
| CN112130702A (en) * | 2019-06-25 | 2020-12-25 | 英属开曼群岛商音飞光电科技股份有限公司 | Thin proximity sensing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427655A (en) * | 2001-12-19 | 2003-07-02 | 英业达集团(上海)电子技术有限公司 | Automatic regulating method of poor light lamp for fitting environmental light strength and circuit |
| CN201069504Y (en) * | 2007-06-13 | 2008-06-04 | 惠州市康力电子有限公司 | Automatic back light control device for flat plate display |
| CN101479777A (en) * | 2006-05-31 | 2009-07-08 | 株式会社半导体能源研究所 | Display device and electronic apparatus |
-
2009
- 2009-12-31 CN CN2009103128383A patent/CN102117582A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427655A (en) * | 2001-12-19 | 2003-07-02 | 英业达集团(上海)电子技术有限公司 | Automatic regulating method of poor light lamp for fitting environmental light strength and circuit |
| CN101479777A (en) * | 2006-05-31 | 2009-07-08 | 株式会社半导体能源研究所 | Display device and electronic apparatus |
| CN201069504Y (en) * | 2007-06-13 | 2008-06-04 | 惠州市康力电子有限公司 | Automatic back light control device for flat plate display |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352903A (en) * | 2016-08-19 | 2017-01-25 | 深圳市金立通信设备有限公司 | Light sensor, terminal and installation method of light sensor |
| CN108227067A (en) * | 2017-11-13 | 2018-06-29 | 矽力杰半导体技术(杭州)有限公司 | A kind of optical texture and the electronic equipment with the optical texture |
| CN107911506A (en) * | 2017-11-22 | 2018-04-13 | 维沃移动通信有限公司 | Mobile terminal and its adjusting method of screen display brightness |
| CN109192153A (en) * | 2018-08-31 | 2019-01-11 | 维沃移动通信有限公司 | A kind of terminal and terminal control method |
| CN109246261A (en) * | 2018-09-14 | 2019-01-18 | 维沃移动通信有限公司 | Terminal and photosensitive control method for terminal |
| CN112130702A (en) * | 2019-06-25 | 2020-12-25 | 英属开曼群岛商音飞光电科技股份有限公司 | Thin proximity sensing device |
| CN111294435A (en) * | 2020-02-24 | 2020-06-16 | Oppo广东移动通信有限公司 | Mobile terminal |
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Application publication date: 20110706 |