KR970007424A - 액정표시장치의 구조 및 구동방법 - Google Patents

액정표시장치의 구조 및 구동방법 Download PDF

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Publication number
KR970007424A
KR970007424A KR1019950020479A KR19950020479A KR970007424A KR 970007424 A KR970007424 A KR 970007424A KR 1019950020479 A KR1019950020479 A KR 1019950020479A KR 19950020479 A KR19950020479 A KR 19950020479A KR 970007424 A KR970007424 A KR 970007424A
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KR
South Korea
Prior art keywords
liquid crystal
display device
crystal display
common
line
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KR1019950020479A
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English (en)
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KR0172881B1 (ko
Inventor
이현창
Original Assignee
구자홍
Lg 전자 주식회사
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Application filed by 구자홍, Lg 전자 주식회사 filed Critical 구자홍
Priority to KR1019950020479A priority Critical patent/KR0172881B1/ko
Priority to US08/564,810 priority patent/US6052104A/en
Priority to FR9604065A priority patent/FR2736733B1/fr
Priority to DE19620475A priority patent/DE19620475C2/de
Priority to GB9614584A priority patent/GB2303240B/en
Priority to JP18359296A priority patent/JP3510956B2/ja
Publication of KR970007424A publication Critical patent/KR970007424A/ko
Application granted granted Critical
Publication of KR0172881B1 publication Critical patent/KR0172881B1/ko

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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
    • 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
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/12—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays
    • H04N3/127—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays using liquid crystals
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/122—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode having a particular pattern
    • 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
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic 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

Abstract

본 발명은 액정표시장치에 관한 것으로, 특히 각 화소를 구동하는 박막 트랜지스터의 게이트 전극과 소오스 전극 간의 기생 커패시터 및 트랜지스터의 누설전류에 의한 픽셀 전극의 전압변화(△Vp)를 감소시켜 화질을 향상시키기에 적당한 액정표시장치의 구조 및 구동방법에 관한 것이다.
이와 같은 본 발명의 액정표시장치의 구조는 복수개의 게이트 라인 및 데이타 라인과 각 화소를 스위칭하는 박막트랜지스터와 화소전극이 배열되어 있는 제1기판, 공통전극이 구성되는 제2기판, 그리고, 제1, 제2기판사이에 채워지는 액정으로 구성되는 액정표시장치에 있어서, 상기 공통전극은 각 라인 별로 구분하여 게이트 라인과 동일 갯수로 형성되고, 상기 각 공통전극에 각각 설치되어 공통전극에 인가되는 공통전압을 스위칭하는 복수개의 스위칭 소자와, 상기 각각 스위칭 소자에 플로팅 펄스를 인가하는 공통전압 플로팅 신호 드라이버를 포함하여 구성된다.
또한 본 발명의 액정표시장치의 구동방법은 공통전극이 라인별로 구분하여 복수개 형성되는 액정표시장치의 구동방법에 있어서, 각 공통전극에 인가되는 공통전압을 해당 라인의 게이트신호 펄스의 상승에지시에 공급하고 상기 해당 게이트신호 펄스의 하강에지시 직전에 차단한 것이다.

Description

액정표시장치의 구조 및 구동방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제4도는 본 발명 제1실시예의 액정표시장치의 등가회로도, 제5도는 본 발명에 따른 프로팅 신호 드라이브와 스위칭수단의 구성도, 제6도는 본 발명 제1실시예에 따른 액정표시장치의 픽셀 전극 전압 특성도, 제7도는 본 발명 제2실시예의 액정표시장치의 등가회로도.

Claims (3)

  1. 복수개의 게이트 라인 및 데이타 라인과 각 화소를 스위칭하는 박막트랜지스터와 화소전극이 배열되어 있는 제1기판, 공통전극이 구성되는 제2기판, 그리고, 제1, 제2기판사이에 채워지는 액정으로 구성되는 액정표시장치에 있어서, 상기 공통전극은 각 라인 별로 구분하여 게이트 라인과 동일 갯수로 형성되고, 상기 각 공통전극에 각각 설치되어 공통전극에 인가되는 공통전압을 스위칭하는 복수개의 스위칭 소자와, 상기 각각 스위칭 소자에 플로팅 펄스를 인가하는 공통전압 플로팅 신호 드라이버를 포함하여 구성됨을 특징으로 하는 액정표시장치의 구조.
  2. 제1항에 있어서, 스위칭 소자는 트리-스테이트 버퍼로 형성됨을 특징으로 하는 액정표시장치의 구조.
  3. 공통전극이 라인별로 구분하여 복수개 형성되는 액정표시장치의 구동방법에 있어서, 각 공통전극에 인가되는 공통전압을 해당 라인의 게이트신호 펄스의 상승에지에 공급하고 상기 해당 게이트신호 펄스의 하강에지시 직전에 차단함을 특징으로 하는 액정표시장치의 구동방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950020479A 1995-07-12 1995-07-12 액정표시장치의 구조 및 구동방법 KR0172881B1 (ko)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1019950020479A KR0172881B1 (ko) 1995-07-12 1995-07-12 액정표시장치의 구조 및 구동방법
US08/564,810 US6052104A (en) 1995-07-12 1995-11-29 Structure and operation method of LCD
FR9604065A FR2736733B1 (fr) 1995-07-12 1996-04-01 Dispositif d'affichage a cristaux liquides procede d'utilisation d'un tel dispositif
DE19620475A DE19620475C2 (de) 1995-07-12 1996-05-21 Flüssigkristallanzeigevorrichtung und Verfahren zum Betreiben derselben
GB9614584A GB2303240B (en) 1995-07-12 1996-07-11 Structure and operation method of LCD
JP18359296A JP3510956B2 (ja) 1995-07-12 1996-07-12 液晶表示装置及びその駆動方法

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Application Number Priority Date Filing Date Title
KR1019950020479A KR0172881B1 (ko) 1995-07-12 1995-07-12 액정표시장치의 구조 및 구동방법

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KR970007424A true KR970007424A (ko) 1997-02-21
KR0172881B1 KR0172881B1 (ko) 1999-03-20

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US (1) US6052104A (ko)
JP (1) JP3510956B2 (ko)
KR (1) KR0172881B1 (ko)
DE (1) DE19620475C2 (ko)
FR (1) FR2736733B1 (ko)
GB (1) GB2303240B (ko)

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KR100934973B1 (ko) * 2002-12-14 2010-01-06 삼성전자주식회사 액정표시장치

Also Published As

Publication number Publication date
GB2303240A (en) 1997-02-12
US6052104A (en) 2000-04-18
FR2736733A1 (fr) 1997-01-17
JPH09120054A (ja) 1997-05-06
GB2303240B (en) 1999-06-09
DE19620475A1 (de) 1997-01-16
JP3510956B2 (ja) 2004-03-29
GB9614584D0 (en) 1996-09-04
KR0172881B1 (ko) 1999-03-20
FR2736733B1 (fr) 2001-11-09
DE19620475C2 (de) 1999-02-11

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