KR970075972A - A driving device of a thin film transistor liquid crystal display device - Google Patents

A driving device of a thin film transistor liquid crystal display device Download PDF

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Publication number
KR970075972A
KR970075972A KR1019960015209A KR19960015209A KR970075972A KR 970075972 A KR970075972 A KR 970075972A KR 1019960015209 A KR1019960015209 A KR 1019960015209A KR 19960015209 A KR19960015209 A KR 19960015209A KR 970075972 A KR970075972 A KR 970075972A
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South Korea
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voltage
terminal
resistor
inverting
gradation
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KR1019960015209A
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Korean (ko)
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KR100188119B1 (en
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조현상
이형곤
김경수
김석태
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김광호
삼성전자 주식회사
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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

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

이 발명은 박막 트랜지스터 액정 표시 장치의 구동 장치에 관한 것으로서, 액정 패널에 인가되는 공통 전압과 데이타 전압에 의해 왜곡되어 궤환되는 궤환 전압을 입력으로 받아서 보정된 계조 기준전압을 생성하여 출력하는 제조 기준 전압 발생 수단, 상기 계조 기준 전압 발생 수다으로부터 출력되는 상기 계조 기준 전압과 상기 궤환 전압을 입력받아서 계조 전압을 발생시켜 출력하는 계조 전압 발생 수단으로 이루어지는데, 데이타 전압에 의해 왜곡되어지는 공통 전압을 궤환시켜 사용하여 보상함으로써 크로스토크, 대비 비, 깜박임 형상등의 특성이 개선된다.The present invention relates to a driving apparatus for a thin film transistor liquid crystal display device, and more particularly, to a driving apparatus for a thin film transistor liquid crystal display device which receives a feedback voltage distorted and fed back by a common voltage and a data voltage applied to a liquid crystal panel, And a gradation voltage generating means for receiving the gradation reference voltage and the feedback voltage output from the gradation reference voltage generating means and generating and outputting the gradation voltage. The common voltage distorted by the data voltage is fed back The characteristics such as crosstalk, contrast ratio, and flicker shape are improved.

Description

박막 트랜지스터 액정 표시 장치의 구동 장치A driving device of a thin film transistor liquid crystal display device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 이 발명의 실시예에 따른 박막 트랜지스터 액정 표시 장치의 구동 장치의 블럭도이다.FIG. 1 is a block diagram of a driving apparatus for a thin film transistor liquid crystal display according to an embodiment of the present invention.

Claims (5)

액정 패널에 인가되는 공통 전압과 데이타 전압에 의해 왜곡되어 궤환되는 궤환 전압을 입력으로 받아서 보정된 계조 기준 전압을 생성하여 출력하는 계조 기준 전압 발생 수단, 상기 제조 기준 전압 발생 수단으로부터 출력되는 상기 계조 기준 전압과 상기 궤환 전압을 입력받아서 계조 전압을 발생시켜 출력하는 계조 전압 발생 수단을 포함하는 박막 트랜지스터 액정 표시 장치의 구동 장치.A gradation reference voltage generating means for receiving a feedback voltage distorted and fed back by a common voltage applied to the liquid crystal panel and a data voltage to generate and output a corrected gradation reference voltage, And a gradation voltage generating means for receiving the voltage and the feedback voltage to generate and output a gradation voltage. 제1항에서, 상기 계조 기준 전압 발생 수단은, 상기 공통 전압과 상기 궤환 전압을 입력받아 상기 공통 전압에서 상기 궤환 전압을 감하여 상기 공통 전압의 왜곡 전압을 출력하는 공통 전압 변화 검사부, 상기 공통 전압 입력을 반전시켜 반전 전압을 출력하는 반전부, 상기 공통 전압 변화 검사부로부터 출력되는 상기 왜곡 전압과 상기 반전부로부터 출력되는 상기 반전 전압을 입력받아 상기 반전 전압에서 상기 왜곡 전압을 감하여 상기 계조 기준 전압을 출력하는 기준 전압 발생부를 포함하는 박막 트랜지스터 액정 표시 장치의 구동 장치.The display device of claim 1, wherein the gradation reference voltage generating unit comprises: a common voltage change checking unit that receives the common voltage and the feedback voltage and subtracts the feedback voltage from the common voltage to output a distortion voltage of the common voltage; And a control unit for receiving the distortion voltage outputted from the common voltage change checking unit and the inverting voltage outputted from the inverting unit to subtract the distortion voltage from the inverting voltage and outputting the gradation reference voltage And a reference voltage generating unit for generating a reference voltage for driving the thin film transistor. 제2항에 있어서, 상기 공통 전압 변화 검사부는, 일측 단자가 상기 궤환 전압 입력에 역결되어 있는 제1저항, 일측 단자가 상기 공통 전압 입력에 연결되어 있는 제2저항, 상기 제2저항의 타측 단자와 접지 사이에 연결되어 있는 제3저항, 반전 단자가 상기 제1저항의 타측 단자에 연결되어 있고 비반전 단자가 상기 제2저항의 타측 단자에 연결되어 있고 출력 단자를 통해 상기 왜곡 전압을 출력하는 제1연산 증폭기, 상기 제1저항의 타측 단자와 상기 제1연산 증폭기의 출력 단자 사이에 연결되어 있는 제4저항으로 이루어지는 박막 트랜지스터 액정 표시 장치의 구동 장치.3. The semiconductor integrated circuit according to claim 2, wherein the common voltage change testing unit includes: a first resistor whose one terminal is inverted to the feedback voltage input; a second resistor whose one terminal is connected to the common voltage input; And a third resistor connected between the ground and the ground, wherein the inverting terminal is connected to the other terminal of the first resistor, the non-inverting terminal is connected to the other terminal of the second resistor, and the distortion voltage is outputted through the output terminal A first operational amplifier, and a fourth resistor connected between the other terminal of the first resistor and the output terminal of the first operational amplifier. 제2항에 있어서, 상기 기준 전압 발생부는, 일측 단자가 상기 왜곡 전압 입력에 연결되어 있는 제5저항, 일측 단자가 상기 반전 전압 입력에 연결되어 있는 제6저항, 상기 제6저항의 타측 단자와 접지 사이에 연결되어 있는 제7저항, 반전 단자가 상기 제5저항의 타측 단자에 연결되어 있고 비반전 단자가 상기 제6저항의 타측 단자에 연결되어 있고 출력 단자를 통해 상기 계조 기준 전압을 출력하는 제2연산 증폭기, 상기 제5저항의 타측 단자와 상기 제2연산 증폭기의 출력 단자 사이에 연결되어 있는 제8저항으로 이루어지는 박막 트랜지스터 액정 표시 장치의 구동 장치.3. The semiconductor memory device according to claim 2, wherein the reference voltage generator comprises: a fifth resistor having one terminal connected to the distortion voltage input; a sixth resistor having one terminal connected to the inverting voltage input; A seventh resistor connected between the ground and the inverting terminal is connected to the other terminal of the fifth resistor, a non-inverting terminal is connected to the other terminal of the sixth resistor, and the gradation reference voltage is outputted through the output terminal A second operational amplifier, and an eighth resistor connected between the other terminal of the fifth resistor and the output terminal of the second operational amplifier. 제3항 및 제4항에 있어서, 상기 계조 기준 전압은, 상기 공통 전압의 진폭보다 더 큰 진폭을 갖는 박막 트랜지스터 액정 표시 장치의 구동 장치.The driving device for a thin film transistor liquid crystal display according to claim 3 or 4, wherein the gradation reference voltage has an amplitude larger than the amplitude of the common voltage. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960015209A 1996-05-09 1996-05-09 Tft-lcd device driving apparatus KR100188119B1 (en)

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KR1019960015209A KR100188119B1 (en) 1996-05-09 1996-05-09 Tft-lcd device driving apparatus

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100462956B1 (en) * 2000-10-04 2004-12-23 세이코 엡슨 가부시키가이샤 Liquid crystal display apparatus and method thereof, image signal correction circuit and image signal correction method, and electronic apparatus
KR100476921B1 (en) * 2000-12-01 2005-03-17 세이코 엡슨 가부시키가이샤 Liquid crystal display device, image signal correcting circuit, image signal correcting method, and electronic device
KR100495934B1 (en) * 2001-10-05 2005-06-16 가시오게산키 가부시키가이샤 Display driving apparatus and driving control method
KR100840672B1 (en) * 2001-12-29 2008-06-24 엘지디스플레이 주식회사 Gamma reference voltage setting device in lcd and setting method using it

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100495798B1 (en) * 1997-09-09 2005-09-20 삼성전자주식회사 LCD and Kickback Voltage Compensation Circuit
KR100965822B1 (en) * 2003-08-02 2010-06-24 삼성전자주식회사 Liquid Crystal Display Device And Driving Method For The Same
KR100951356B1 (en) 2003-08-07 2010-04-08 삼성전자주식회사 Liquid crystal display and driving method thereof
KR101213945B1 (en) * 2005-11-29 2012-12-18 엘지디스플레이 주식회사 LCD and drive method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100462956B1 (en) * 2000-10-04 2004-12-23 세이코 엡슨 가부시키가이샤 Liquid crystal display apparatus and method thereof, image signal correction circuit and image signal correction method, and electronic apparatus
KR100476921B1 (en) * 2000-12-01 2005-03-17 세이코 엡슨 가부시키가이샤 Liquid crystal display device, image signal correcting circuit, image signal correcting method, and electronic device
KR100495934B1 (en) * 2001-10-05 2005-06-16 가시오게산키 가부시키가이샤 Display driving apparatus and driving control method
KR100840672B1 (en) * 2001-12-29 2008-06-24 엘지디스플레이 주식회사 Gamma reference voltage setting device in lcd and setting method using it

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