JP2008003296A - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
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- JP2008003296A JP2008003296A JP2006172562A JP2006172562A JP2008003296A JP 2008003296 A JP2008003296 A JP 2008003296A JP 2006172562 A JP2006172562 A JP 2006172562A JP 2006172562 A JP2006172562 A JP 2006172562A JP 2008003296 A JP2008003296 A JP 2008003296A
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Images
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
- G02F1/13312—Circuits comprising photodetectors for purposes other than feedback
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
- G02F1/13318—Circuits comprising a photodetector
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2203/00—Function characteristic
- G02F2203/11—Function characteristic involving infrared radiation
Abstract
【解決手段】液晶パネル輝度制御部7は、照度がしきい値以下だったなら、バックライト制御部3に指示し、この指示の到来により、バックライト制御部3は、例えば、非可視光を出射させる。非可視光は、導光板22と液晶パネル1を通過し、撮像対象に遮断もしくは反射して、光センサ12に受光される。これにより、液晶パネル1の輝度低下に起因する光センサ12での受光量低下を補うことができる。よって、SN比の高い画像が得られる。
【選択図】図1
Description
次に、本装置に動作を説明する。
2 バックライト
3 バックライト制御部
4 表示制御部
5 画像入力部
6 照度測定部
7 液晶パネル輝度制御部
11 表示素子
12 光センサ
211 可視光源
212 非可視光源
Claims (3)
- 液晶層ならびに分散配置された光センサを備えた液晶パネルと、
前記液晶パネルの背面側に設けられ、可視光源を備えたバックライトと、
前記可視光源から出射した可視光が前記液晶層を通過後、撮像対象に遮断もしくは反射して前記光センサに受光されたとき受光量に基づいて、当該撮像対象の画像入力を行う画像入力手段と、
前記可視光の光強度を変化させうるバックライト制御手段と、
環境光の照度を測定する照度測定手段と、
前記照度測定手段により測定された照度により、環境光の照度低下を検出したときは、前記バックライト制御手段をして可視光の光強度を弱めることにより、前記液晶パネルの輝度を低下させる液晶パネル輝度制御手段とを備え、
前記バックライトは、前記液晶パネルの輝度の低下によって可視光の受光量が低下することとなる前記光センサに受光されうる非可視光を出射する非可視光源を備えることを特徴とする液晶表示装置。 - 前記非可視光のピーク波長が760nm以上かつ1000nm以下であることを特徴とする請求項1記載の液晶表示装置。
- 前記バックライト制御手段は、
環境光の照度低下時における前記液晶パネル輝度制御手段からの指示の到来により非可視光を出射させるまたは非可視光の光強度を強める一方、当該指示の到来前において非可視光の出射を停止させておくまたは非可視光の光強度を弱めておく
ことを特徴とする請求項1または2記載の液晶表示装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006172562A JP4891666B2 (ja) | 2006-06-22 | 2006-06-22 | 液晶表示装置 |
US11/695,235 US7701448B2 (en) | 2006-06-22 | 2007-04-02 | Liquid crystal display device achieving imaging with high S/N ratio using invisible light |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006172562A JP4891666B2 (ja) | 2006-06-22 | 2006-06-22 | 液晶表示装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008003296A true JP2008003296A (ja) | 2008-01-10 |
JP4891666B2 JP4891666B2 (ja) | 2012-03-07 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006172562A Active JP4891666B2 (ja) | 2006-06-22 | 2006-06-22 | 液晶表示装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7701448B2 (ja) |
JP (1) | JP4891666B2 (ja) |
Cited By (13)
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JP2009169390A (ja) * | 2007-12-19 | 2009-07-30 | Sony Corp | 表示装置および照明装置 |
WO2009110294A1 (ja) | 2008-03-03 | 2009-09-11 | シャープ株式会社 | 光センサ付き表示装置 |
JP2009223317A (ja) * | 2008-03-14 | 2009-10-01 | Samsung Electronics Co Ltd | 液晶表示装置、表示システム、および液晶表示装置を利用した物体形状の認識方法 |
WO2010001661A1 (ja) * | 2008-07-01 | 2010-01-07 | シャープ株式会社 | 表示装置 |
WO2010024008A1 (ja) | 2008-08-29 | 2010-03-04 | シャープ株式会社 | 座標センサ、電子機器、表示装置、受光ユニット |
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WO2010100796A1 (ja) * | 2009-03-06 | 2010-09-10 | シャープ株式会社 | 表示装置 |
JP2011107829A (ja) * | 2009-11-13 | 2011-06-02 | Sharp Corp | センサ装置、及び画像処理システム |
JPWO2009122716A1 (ja) * | 2008-04-03 | 2011-07-28 | パナソニック株式会社 | 情報表示装置 |
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US7701448B2 (en) | 2010-04-20 |
US20070296688A1 (en) | 2007-12-27 |
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