KR950019869A - 화상표시장치 - Google Patents

화상표시장치 Download PDF

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KR950019869A
KR950019869A KR1019940037717A KR19940037717A KR950019869A KR 950019869 A KR950019869 A KR 950019869A KR 1019940037717 A KR1019940037717 A KR 1019940037717A KR 19940037717 A KR19940037717 A KR 19940037717A KR 950019869 A KR950019869 A KR 950019869A
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display data
frame
data
pixel
signal line
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KR1019940037717A
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KR0168477B1 (ko
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이찌로 시라끼
마나부 마쯔우라
야스시 구보따
히로시 요네다
요시따까 야마모또
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쯔지 하루오
샤프 가부시끼가이샤
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Priority claimed from JP33588993A external-priority patent/JPH07199149A/ja
Priority claimed from JP30923694A external-priority patent/JP3207693B2/ja
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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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0814—Several active elements per pixel in active matrix panels used for selection purposes, e.g. logical AND for partial update
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0235—Field-sequential colour display
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0219—Reducing feedthrough effects in active matrix panels, i.e. voltage changes on the scan electrode influencing the pixel voltage due to capacitive coupling
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3659—Control of matrices with row and column drivers using an active matrix the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3666—Control of matrices with row and column drivers using an active matrix with the matrix divided into sections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/399—Control of the bit-mapped memory using two or more bit-mapped memories, the operations of which are switched in time, e.g. ping-pong buffers

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Nonlinear Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

화상표시장치는, 1프레임기간내에 복수회의 동일데이타를 화소에 서입함으로써 화소용량의 치가 표시용데이타유지율의 99% 미만으로 되는 치를 갖는 구성이 가능하다. 이에 따라, 보조용량의 폐지, 개구율의 향상이 도모된다. 또한 본 발명에 의하며, 화소를 구동하기 위해 스위칭소자로 각 화소에 배열된 MOS트랜지스터와, 데이타신호선 및 주사신호선을 통해 MOS트랜지스터에 표시용데이타에 기초하여 구동신호를 전송하는 데이타신호선 구동회로 및 데이타신호선 구동회로와, 데이타신호선 구동회로에 출력하기 위한 표시용데이타를 1프레임단위로 기억하고, 또한 화소외에 설치되는 제1필드메모리 및 제2필드메모리가 동일기판상에 형성된다. 이에 따라 실장효율의 향상 및 저코스트화를 도모할 수 있다.

Description

화상표시장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명의 1실시예를 설명하는 블럭도이다,
제4도는 본 발명을 필드순차주사방식으로 실시한 경우의 1실시예의 블럭도이다,
제7도는 본발명의 다른 실시예를 설명하는 블럭도이다.

Claims (13)

  1. 매트릭스 사태로 배치되고, 표시데이타를 유지하기 위해 보조용량을 구비함과 동시에 이 표시데이타를 표시하는 화소부를 포함하고, 상기 보조용량은 1프레임분의 표시용데이타의 유지율이 99%미만인 화상표시장치.
  2. 제1항에 있어서,1프레임동안 상기 표시용데이타의 인접프레임을 각각 기억하는 제1및 제2기억수단, 1프레임맏, 1프레임분의 표시용데이타의 기억선을 상기 제1기억수단과 제2기억수단사이에 절환하는 절환수단, 및 상기 제1및 제2기억수단을 제어하여, 1프레임동안의 표시데이타가 상기 기억수단과 하나에 기억되는 동안, 1프레임동안의 표시데이타가 다른 기억수단에서 상기 화소로 복수회 출력되도록 하는 제어수단을 포함하는 화상표시장치.
  3. 제2항에 있어서, 상기 화소부는 액티브소자를 포함하고, 이 액티브소자의 캐리어이동도는 적어도 5(cm2/Vsec)인 화상표시장치.
  4. 제2항에 있어서, 상기 제1및 제2기억수단은 각각 각 프레임의 적화면표시용데이타, 녹화면표시용데이타, 및 청화면표시용데이타를 기억하는 영역을 갖고, 필드순차주사에 의해 컬러화상을 표시하는 화상표시장치.
  5. 제1항에 있어서,1프레임동안 상기 표시용데이타의 인접프레임을 각각 기억하고, 또한 각 프레임의 적화면표시용데이타, 녹화면표시용데이타, 및 청화면표시용데이타를 기억하는 영역을 갖는 제1및 제2기억수단, 1프레임마다, 1프레임분의 표시용데이타의 기억선을 상기 제1기억수단과 제2기억수단사이에 절환하는 절환수단, 및 상기 제1및 제2기억수단을 제어하여, 1프레임동안의 표시데이타가 상기 기억수단의 하나에 기억되는 동안 1프레임기간을 3등분하여 얻어진 각각의 1/3기간내에 소정회수만큼 적화면표시용데이타, 녹화면표시용데이타, 및 청화면표시용데이타를 다른 기억수단에서 상기 화소부로 출력되도록 하는 제어수단을 포함하며, 이에 따라 필드순차주사에 의해 컬러화상을 표시하는 화상표시장치.
  6. 보조용량을 포함하지 않는 액키브매트릭스형화상표시장치로서, 인접 데이타신호선 및 인접주사신호선으로 둘러싸인 영역에 설치된 화소, 그의 소스가 화소전극에 접속됨과 동시에 그의 게이트에 주사신호가 인가되며, 또한 그의 드레인이 데이타신호선에 접속되어 상기 화소의 스위칭을 행하는 제1액티브소자, 및 드레인과 소스가 상기 화소전극에 접속되고, 또한 게이트에는 상기 주사신호와의 역위상의 신호가 인가되는 제2액티브소자를 포함하며, Ggsl 을 제1액티브소자의 게이트소스간의 기생용량으로 하고, Ggs2를 제2액티브소자의 게이트소스간의 기생용량으로 하며, Cgd2 를 제2액티브소자에 게이트드레인간의 기생용량으로 하면, 상기 제2액티브소자는 Ggs2+Cgd2=Ggsl을 만족하는 사이즈를 갖는 화상표시장치.
  7. 보조용량을 포함하지 않는 액키브매트릭스형화상표시장치로서, 인접 데이타신호선 및 인접주사선으로 둘러싸인 영역에 설치된 화소, 그의 소스가 화소전극에 접속됨과 동시에 그의 게이트에 주사신호가 인가되고, 또한 그의 드레인이 데이타신호선에 접속되는 제1액티브소자, 소스가 상기 화소전극에 접속됨과 동시에 드레인이 상기 데이타신호선에 접속되고, 또한 상기 게이트에는 상기 주사신호와는 역위상의 신호가 인가되는 제2액티브소자를 포함하며, 상기 제1및 제2액티브소자는 소로 상보형의 관계에 있고, Ggsl 을 제1액티브소자의 게이트소스간의 기생용량으로 하고, Ggs2를 제2액티브소자의 게이트소스간의 기생용량으로 하면, Ggs2=Ggsl을 만족하는 사이즈를 갖는 화상표시장치.
  8. 복수의 데이타신호선과, 이들 데이타신호선에 대해 교차하는 복수의 주사신호선을 구비함과 동시에 표시용 데이타에 기초하여 화상을 표시하기 위해 각 화소가 인접하는 각 데이타신호선 및 인접하는 각 주사신호선으로 둘러싸인 위치에 각각 배치된 화소어레이로 이루어지는 화상표시장치로서, 상기 화소를 구동하기 위한 스위칭소자로서 각 화소에 배열된 MOS트랜지스터, 상기 데이타신호선 및 주사신호선을 통해 상기 MOS트랜지스터로 표시용데이타에 기초하여 구동신호를 전송하는 구동회로, 및 상기 구동회로에 출력하기 위한 표시용데이타를 1프레임단위로 기억하고, 또한 화소외측에 설치되는 메모리 수단을 포함하며, 상기 MOS트랜지스터, 상기 구동회로 및 상기 메모리수단이 동일기판상에 형성되는 것읖 특징으로 하는 화상표시장치.
  9. 제8항에 있어서, 상기 메모리수단은 적어도 2개의 구분메모리수단을 갖고 있고, 새로운 1프레임분의 표시데이타를 상기 구분메모리수단의 하나에 기억하고 다른 구분메모리에 기억된 1프레임분의 표시용데이타의 상기 구동회로로의 독출을 교호로 절환하여 행하는 절환수단, 및 상기 구분메모리수단중 하나에 의한 표시용데이타의 새로운 1프레임을 기억하는 기간동안, 다른 구분메모리수단에 기억된 1프레임분의 표시용데이타의 상기 구동회로로의 독출을 2회이상 행함으로써 동일 표시용데이타를 동일화소에 2회이상 반복하여 서입하는 반복서입수단을 포함하는 화상표시장치.
  10. 제8항에 있어서, 상기 메모리수단은 DRAM구성, SRAM구성, 또는 EEPROM구성을 갖는 화상표시장치.
  11. 제9항에 있어서, 상기 메모리수단은 DRAM구성, SRAM구성, 또는 EEPROM구성을 갖는 화상표시장치.
  12. 제8항에 있어서, 상기 MOS트랜지스터와 상기 구동회로 및 메모리수단을 구성하는 각 소자는 다결정실리콘박막을 반도체층으로 하여 이루어지는 화상표시장치.
  13. 제8항에 있어서, 상기 기판은 상기 MOS트랜지스터 및 상기 구동회로와 메모리수단을 구성하는 각 소자는 600℃이하의 프로세스온도에서 형성되는 전기절연성을 갖는 유리기판으로 구성되는 화상표시장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940037717A 1993-12-28 1994-12-28 화소에 대한 표시 데이타의 기입을 제어하는 액티브 매트릭스형 화상 표시 장치 KR0168477B1 (ko)

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JP30923694A JP3207693B2 (ja) 1994-12-13 1994-12-13 画像表示装置

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