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KR970007777A - TFT-LCD Multi-Grade Driving Circuit - Google Patents

TFT-LCD Multi-Grade Driving Circuit Download PDF

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Publication number
KR970007777A
KR970007777A KR1019950020373A KR19950020373A KR970007777A KR 970007777 A KR970007777 A KR 970007777A KR 1019950020373 A KR1019950020373 A KR 1019950020373A KR 19950020373 A KR19950020373 A KR 19950020373A KR 970007777 A KR970007777 A KR 970007777A
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KR
South Korea
Prior art keywords
voltage
tft
unit
lcd
adder
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Application number
KR1019950020373A
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Korean (ko)
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KR100209634B1 (en
Inventor
김한섭
Original Assignee
구자홍
Lg 전자주식회사
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Priority to KR1019950020373A priority Critical patent/KR100209634B1/en
Publication of KR970007777A publication Critical patent/KR970007777A/en
Application granted granted Critical
Publication of KR100209634B1 publication Critical patent/KR100209634B1/en

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Classifications

    • 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
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0286—Details of a shift registers arranged for use in a driving 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
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

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

Abstract

본 발명은 TFT-LCD(Thin Film Transistor-Liquid Crystal Display)의 구동에 관한 것으로, 특히 데이터 비트수만큼의 기준 전압으로 저소비전력구동, IC의 크기 및 PCB회로크기를 줄여 컴팩트를 실현하는데 적당하도록 한 TFT-LCD의 다계조화구동 회로에 관한 것이다.The present invention relates to the operation of TFT-LCD (Thin Film Transistor-Liquid Crystal Display). In particular, the present invention relates to low power consumption, IC size, and PCB circuit size with a reference voltage equal to the number of data bits. The present invention relates to a multi-gradation driving circuit of a TFT-LCD.

본 발명의 상기와 같은 목적을 달성하기 위하여 외부로부터 전송된 데이터신호의 각 비트별 신호단과, 상기의 비트수만큼의 각각 다른 기준 전압을 갖는 기준전압단과, 상기의 각 비트별 신호와 각 기준전압을 각각 선택해주는 스위칭부와, 상기의 스위칭되어 선택되어진 기준전압을 더해주어 화소전압을 발생시키는 애더 볼테이지부와, 상기 스위칭 및 애더 볼테이지부에서 출력된 전압을 저장하여 수평1라인을 동시에 디스플레이되도록 전압을 출력하는 홀드 메모리부로 구성됨을 특징으로 한다.In order to achieve the above object of the present invention, a signal terminal for each bit of a data signal transmitted from the outside, a reference voltage terminal having different reference voltages as many as the number of bits, and the signal for each bit and each reference voltage A switch unit for selecting each, an adder voltage unit generating the pixel voltage by adding the switched selected reference voltage, and a voltage output from the switching and adder voltage unit to store a horizontal line at the same time It characterized in that it is composed of a hold memory unit for outputting the.

Description

티에프티-엘씨디(TFT-LCD)의 다계조화 구동회로TFT-LCD Multi-Grade Driving Circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제6도는 본 발명의 소오스 드라이버의 출력레벨 선택회로도, 제7도는 본 발명의 소오스 드라이버 구성도, 제8도 (a)는 본 발명을 이용한 TFT-LCD 구동회로도, (b)는 제8도 (a)의 소오스 드라이버의 구성도.6 is a diagram illustrating an output level selection circuit of a source driver of the present invention, FIG. 7 is a configuration diagram of a source driver of the present invention, FIG. a) Configuration diagram of the source driver.

Claims (3)

외부로부터 전송된 데이터신호의 각비트별 신호단과, 상기의 비트수만큼의 각각 다른 기준전압을 갖는 기준전압단과, 상기의 각 비트별 신호와 각 기준전압을 각각 선택해주는 스위칭부와, 상기의 스위칭되어 선택되어진 기준전압을 더해주어 화소전압을 발생시키는 애더 볼테이지부와, 상기 스위칭 및 애더 볼테이지부에서 출력된 전압을 저장하여 수평1라인을 동시에 디스플레이되도록 전압을 출력하는 홀드 메모리부로 구성됨을 특징으로 하는 TFT-LCD의 다계조화 구동회로.A signal terminal for each bit of the data signal transmitted from the outside, a reference voltage terminal having different reference voltages as many as the number of bits, a switching unit for selecting the signals for each bit and each reference voltage, and the above switching And a hold memory unit configured to add a selected reference voltage to generate a pixel voltage, and to hold a voltage output from the switching and adder voltage unit to output a voltage to simultaneously display one horizontal line. TFT-LCD multi-gradation driving circuit. PC에서 공급되어지는 모드신호 및 데이터를 공급받는 제어부와, 상기 제어부에서 게이트 및 소오스 드라이버에 필요한 신호를 생성하여 공급하는 게이트 드라이버와 스위칭 서킷 및 애더 볼테이지부와, 상기 스위칭 서킷 및 애더볼테이지에서 출력된 전압을 소오스 드라이버에 공급하는 것을 특징으로 하는 TFT-LCD의 다계조화 구동회로.A control unit receiving mode signals and data supplied from a PC, a gate driver, a switching circuit and an adder voltage unit for generating and supplying signals necessary for a gate and a source driver, and outputting the switching circuit and the adder voltage. A multi-gradation driving circuit of a TFT-LCD, wherein the supplied voltage is supplied to a source driver. 제2항에 있어서, 소오스 드리이버는 R, G, B 각 데이터를 각 화소마다 차례로 샘플링할 수 있도록 동작하는 쉬프트 레지스터와 스위칭 서킷 및 애더 볼테이지부에서 출력된 전압을 저장하여 수평1라인을 동시에 디스플레이 되도록 전압을 출력하는 홀드메모리부로 구성됨을 특징으로 하는 TFT-LCD의 다계조화 구동회로.The source driver of claim 2, wherein the source driver stores the voltages output from the shift circuit, the switching circuit, and the adder voltage unit so as to sequentially sample each of the R, G, and B data for each pixel, thereby simultaneously displaying one horizontal line. A multi-gradation driving circuit of a TFT-LCD, comprising a hold memory unit for outputting a voltage. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950020373A 1995-07-11 1995-07-11 TF-LC's Multi-Grade Driving Circuit KR100209634B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950020373A KR100209634B1 (en) 1995-07-11 1995-07-11 TF-LC's Multi-Grade Driving Circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950020373A KR100209634B1 (en) 1995-07-11 1995-07-11 TF-LC's Multi-Grade Driving Circuit

Publications (2)

Publication Number Publication Date
KR970007777A true KR970007777A (en) 1997-02-21
KR100209634B1 KR100209634B1 (en) 1999-07-15

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KR1019950020373A KR100209634B1 (en) 1995-07-11 1995-07-11 TF-LC's Multi-Grade Driving Circuit

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100628435B1 (en) * 1998-09-15 2006-12-04 삼성전자주식회사 Assembly method of tiled liquid crystal display and tiled liquid crystal display

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100628435B1 (en) * 1998-09-15 2006-12-04 삼성전자주식회사 Assembly method of tiled liquid crystal display and tiled liquid crystal display

Also Published As

Publication number Publication date
KR100209634B1 (en) 1999-07-15

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