KR100769430B1 - 외광감지센서 및 이를 이용한 액정표시장치 - Google Patents
외광감지센서 및 이를 이용한 액정표시장치 Download PDFInfo
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- KR100769430B1 KR100769430B1 KR1020060034695A KR20060034695A KR100769430B1 KR 100769430 B1 KR100769430 B1 KR 100769430B1 KR 1020060034695 A KR1020060034695 A KR 1020060034695A KR 20060034695 A KR20060034695 A KR 20060034695A KR 100769430 B1 KR100769430 B1 KR 100769430B1
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- transistor
- external light
- power supply
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- backlight
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- 239000004973 liquid crystal related substance Substances 0.000 title claims description 42
- 230000002093 peripheral effect Effects 0.000 title abstract 4
- 230000003287 optical effect Effects 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 claims description 29
- 239000003990 capacitor Substances 0.000 claims description 23
- 210000002858 crystal cell Anatomy 0.000 claims description 20
- 239000011159 matrix material Substances 0.000 claims description 18
- 230000003321 amplification Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 5
- 230000003071 parasitic effect Effects 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Classifications
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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
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims (13)
- 제1 전원과 상기 제1 전원보다 낮은 전압값을 가지는 제2 전원 사이에 접속되며, 제어신호에 대응하여 턴-온 또는 턴-오프되는 제1 트랜지스터; 및상기 제1 트랜지스터와 상기 제2 전원 사이에 접속되어 외광의 세기에 대응하여 상기 제1 트랜지스터로부터 상기 제2 전원으로 흐르는 전류량을 제어하며, 게이트 전극이 상기 제2 전원에 접속되도록 역방향 다이오드 연결된 제2 트랜지스터를 구비하는 감지부를 포함하며,상기 감지부의 출력단에 접속되는 적어도 하나의 증폭회로를 더 포함하는 외광감지센서.
- 제1 항에 있어서,상기 증폭회로는상기 제1 전원과 상기 제2 전원 사이에 접속되며, 바이어스 신호에 대응하여 턴-온되는 제3 트랜지스터; 및상기 제3 트랜지스터와 상기 제2 전원 사이에 접속되며, 게이트 전극이 상기 감지부의 출력단에 접속되는 제4 트랜지스터를 포함하는 외광감지센서.
- 제2 항에 있어서,상기 제3 및 제4 트랜지스터는 피(P)-타입 트랜지스터인 외광감지센서.
- 제1 항에 있어서,상기 제2 트랜지스터와 병렬접속된 적어도 하나의 커패시터를 더 포함하는 외광감지센서.
- 삭제
- 제1 항에 있어서,상기 제1 및 제2 트랜지스터는 엔(N)-타입 트랜지스터인 외광감지센서.
- 제1 항에 있어서,상기 제1 트랜지스터는 엔(N)-타입 트랜지스터이고, 상기 제2 트랜지스터는 피(P)-타입 트랜지스터인 외광감지센서.
- 다수의 액정셀들이 구비된 화소부;상기 화소부의 외연에 형성되는 블랙 매트릭스 영역에 구비되며, 외광의 세기에 대응하는 감지신호를 출력하는 적어도 하나의 외광감지센서;상기 화소부로 광을 공급하는 백라이트; 및상기 감지신호에 대응하여 상기 백라이트에서 생성되는 광의 휘도를 제어하는 백라이트 구동부를 포함하며,상기 외광감지센서는 제1 전원과 상기 제1 전원보다 낮은 전압값을 가지는 제2 전원 사이에 접속되며 제어신호에 대응하여 턴-온 또는 턴-오프되는 제1 트랜지스터와, 상기 제1 트랜지스터와 상기 제2 전원 사이에 접속되어 외광의 세기에 대응하여 상기 제1 트랜지스터로부터 상기 제2 전원으로 흐르는 전류량을 제어하며 게이트 전극이 상기 제2 전원에 접속되도록 역방향 다이오드 연결된 제2 트랜지스터를 구비하는 감지부를 포함하며, 상기 감지부의 출력단에 접속되는 적어도 하나의 증폭회로를 더 포함하는 액정표시장치.
- 제8 항에 있어서,상기 증폭회로는상기 제1 전원과 상기 제2 전원 사이에 접속되며, 바이어스 신호에 대응하여 턴-온되는 제3 트랜지스터; 및상기 제3 트랜지스터와 상기 제2 전원 사이에 접속되며, 게이트 전극이 상기 감지부의 출력단에 접속되는 제4 트랜지스터를 포함하는 액정표시장치.
- 제9 항에 있어서,상기 제3 및 제4 트랜지스터는 피(P)-타입 트랜지스터인 액정표시장치.
- 제8 항에 있어서,상기 제2 트랜지스터와 병렬접속된 적어도 하나의 커패시터를 더 포함하는 액정표시장치.
- 삭제
- 제8 항에 있어서,상기 제2 트랜지스터의 게이트 전극은 상기 블랙 매트릭스의 개구부에 위치 되는 액정표시장치.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060034695A KR100769430B1 (ko) | 2006-04-17 | 2006-04-17 | 외광감지센서 및 이를 이용한 액정표시장치 |
JP2006239340A JP4584215B2 (ja) | 2006-04-17 | 2006-09-04 | 外光感知センサー及びこれを利用した液晶表示装置 |
US11/730,525 US7961180B2 (en) | 2006-04-17 | 2007-04-02 | Optical sensor for sensing peripheral light and liquid crystal display device using the same |
CN2007100968991A CN101059938B (zh) | 2006-04-17 | 2007-04-16 | 探测周围光的光学传感器及采用其的液晶显示器件 |
DE602007000423T DE602007000423D1 (de) | 2006-04-17 | 2007-04-17 | Optischer Sensor zur Erfassung peripheren Lichts und Flüssigkristallanzeige damit |
EP07106299A EP1847818B1 (en) | 2006-04-17 | 2007-04-17 | Optical sensor for sensing peripheral light and liquid crystal display device using the same |
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KR1020060034695A KR100769430B1 (ko) | 2006-04-17 | 2006-04-17 | 외광감지센서 및 이를 이용한 액정표시장치 |
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KR20050046458A (ko) * | 2003-11-14 | 2005-05-18 | 엘지.필립스 엘시디 주식회사 | 액정표시소자 및 그 구동방법 |
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KR20050046458A (ko) * | 2003-11-14 | 2005-05-18 | 엘지.필립스 엘시디 주식회사 | 액정표시소자 및 그 구동방법 |
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