KR960030068A - Liquid crystal display driving device with multiple common electrode potentials - Google Patents

Liquid crystal display driving device with multiple common electrode potentials Download PDF

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Publication number
KR960030068A
KR960030068A KR1019950000984A KR19950000984A KR960030068A KR 960030068 A KR960030068 A KR 960030068A KR 1019950000984 A KR1019950000984 A KR 1019950000984A KR 19950000984 A KR19950000984 A KR 19950000984A KR 960030068 A KR960030068 A KR 960030068A
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KR
South Korea
Prior art keywords
signal
common electrode
liquid crystal
crystal display
display device
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KR1019950000984A
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Korean (ko)
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KR0142469B1 (en
Inventor
김헌수
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김광호
삼성전자 주식회사
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Priority to KR1019950000984A priority Critical patent/KR0142469B1/en
Publication of KR960030068A publication Critical patent/KR960030068A/en
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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
    • G09G3/34—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
    • G09G2300/0842—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
    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0257—Reduction of after-image effects
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation

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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)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

이 발명은 다중 공통전극 전위의 액정표시장치 구동장치에 관한 것으로, 외부로부터의 입력신호에 따라 액정표시장치(500)에 선·문자·기호 등의 신호를 표시하기 위해 액정표시장치의 가로축 주사선을 구동하는 장치를 제어하는 신호와, 상기 액정표시장치(500)의 세로축 신호선을 구동하는 장치를 제어하는 신호와, 상기 액정표시장치(500)의 잔상 및 깜빡거림이 없는 화질을 구성할 수 있도록 액정표시장치(500)의 각 공통전극에 공급되는 전압을 선택하는 신호를 출력하는 제어부(100)와, 상기 제어부(100)로부터 입력된 신호에 따라 동작하여, 액정표시장치(500)의 각 트랜지스터의 게이트단자에 연결되어 있는 가로축 주사선으로 신호를 출력하는 주사전극 구동부(200)와, 상기 제어부(100)로부터 입력된 신호에 따라 동작하여, 액정표시장치(500)의 각 트랜지스터의 소스단자에 연결되어 있는 세로축 신호선으로 신호를 출력하는 신호전극 구동부(300)와, 상기 제어부(100)로부터 입력된 신호에 따라 동작하여, 액정표시장치(500)의 각 공통전극에 해당하는 신호를 선택하여 출력하는 공통전극 구동부(400)로 이루어져 있으며, 액정표시장치를 구동하는 데에 있어서, 온도 등 주변상황에 따라 공통전극 전위의 공급을 선택할 수 있도록 함으로써, 공통전극보다 상위하는 쪽의 전압의 크기와 공통전극보다 하위하는 쪽의 전압의 크기가 같도록 하여 화면의 깜빡거림 현상을 개선하고, 또, 공통전극보다 상위하는 쪽의 전압의 합과 공통전극보다 하위하는 쪽의 전압의 합이 같도록 하여 잔상 현상을 개선하여, 양질의 액정표시장치를 구동시키는 다중 공통전극 전위의 액정표시장치 구동장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for driving a liquid crystal display device with multiple common electrode potentials. A signal for controlling a driving device, a signal for controlling a device for driving a vertical signal line of the liquid crystal display device 500, and a liquid crystal so as to form an image having no afterimage and flickering of the liquid crystal display device 500; The control unit 100 outputs a signal for selecting a voltage supplied to each common electrode of the display device 500, and operates according to a signal input from the control unit 100 to control the transistors of the transistors of the liquid crystal display device 500. A scan electrode driver 200 which outputs a signal to a horizontal scan line connected to a gate terminal, and operates according to a signal input from the controller 100 to operate the respective transistors of the liquid crystal display device 500. The signal electrode driver 300 outputs a signal to a vertical signal line connected to the source terminal of the tester, and operates according to a signal input from the controller 100 to correspond to each common electrode of the liquid crystal display device 500. The common electrode driver 400 selects and outputs a signal, and in driving the liquid crystal display device, the supply of the common electrode potential can be selected according to the surrounding conditions such as temperature, so that the common electrode is higher than the common electrode. The flicker of the screen is improved by making the magnitude of the voltage equal to the voltage lower than the common electrode, and the sum of the voltage higher than the common electrode and the voltage lower than the common electrode. The present invention relates to a liquid crystal display device driving apparatus having multiple common electrode potentials for improving the afterimage phenomenon and driving a high quality liquid crystal display device.

Description

다중 공통전극 전위의 액정표시장치 구동장치Liquid crystal display driving device with multiple common electrode potentials

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

제5도는 이 발명의 실시예에 따른 다중 공통전극 전위의 액정표시장치 구동장치를 적용한 회로도, 제6도는 이 발명의 실시예에 따른 다중 공통전극 전위의 액정표시장치 구동장치에서 공통전극의 전위가 변경되는 개념도, 제7도의 (가)~(다)는 이 발명의 실시예에 따른 다중 공통전극 전위의 액정표시장치 구동장치가 5볼트 구동 방식에서 적용되는 파형도이다.FIG. 5 is a circuit diagram of a liquid crystal display driving apparatus having a multiple common electrode potential according to an embodiment of the present invention. FIG. 6 is a potential of the common electrode in the liquid crystal display driving apparatus having a multi common electrode potential according to an embodiment of the present invention. 7 (a) to (c) of FIG. 7 are waveform diagrams in which the liquid crystal display driving apparatus of the multiple common electrode potential according to the embodiment of the present invention is applied in the 5-volt driving method.

Claims (3)

외부로부터의 입력신호(SGN)에 따라 액정표시장치(500)에 선·문자·기호 등의 신호를 표시하기 위해 액정표시장치(500)의 가로축 주사선을 구동하는 장치를 제어하는 신호와, 상기 액정표시장치(500)의 세로축 신호선을 구동하는 장치를 제어하는 신호와, 상기 액정표시장치(500)의 잔상 및 깜빡거림이 없는 화질을 구성할 수 있도록 액정표시장치(500)의 각 공통전극에 공급되는 전압을 선택하는 신호를 출력하는 제어수단(100)과; 상기 제어수단(100)으로부터 입력된 신호에 따라 동작하여, 액정표시장치(500)의 각 트랜지스터의 게이트단자에 연결되어 있는 가로축 주사선으로 신호를 출력하는 주사전극 구동수단(200)과; 상기 제어수단(100)으로부터 입력된 신호에 따라 동작하여, 액정표시장치(500)의 각 트랜지스터의 소스단자에 연결되어 있는 세로축 신호선으로 신호를 출력하는 신호전극 구동수단(300)과; 상기 제어수단(100)으로부터 입력된 신호에 따라 동작하여, 액정표시장치(500)의 각 공통전극에 잔상과 깜빡거림이 없는 화질을 구성하기 위해 해당하는 신호를 선택하여 출력하는 공통전극 구동부(400)으로 이루어져 있는 것을 특징으로 하는 다중 공통전극 전위의 액정표시장치 구동장치.A signal for controlling a device for driving a horizontal scanning line of the liquid crystal display device 500 to display signals such as lines, characters, and symbols on the liquid crystal display device 500 according to an input signal SGN from the outside; The signal is supplied to each common electrode of the liquid crystal display device 500 so as to configure a signal for controlling the device for driving the vertical signal line of the display device 500 and the image quality of the liquid crystal display device 500 with no afterimage and flickering. Control means (100) for outputting a signal for selecting a voltage to be; Scan electrode driving means (200) for operating in response to a signal input from the control means (100) to output a signal to a horizontal scan line connected to the gate terminal of each transistor of the liquid crystal display (500); A signal electrode driving means 300 operating according to a signal input from the control means 100 and outputting a signal to a vertical signal line connected to a source terminal of each transistor of the liquid crystal display device 500; The common electrode driver 400 operates according to a signal input from the control means 100 and selects and outputs a corresponding signal to form an image quality free of afterimages and flickers on each common electrode of the liquid crystal display device 500. And a liquid crystal display device drive device having multiple common electrode potentials. 제1항에 있어서, 상기 제어수단(100)은, 잔상 및 깜빡거림이 없는 화질을 구성하기 위한 신호를 출력하기 위해, 온도감지기 등을 장착하여 신호를 감지함으로써, 상기 온도 신호에 따른 공통전극 전위(Vcom)을 선택하는 것을 특징으로 하는 다중 공통전극 전위의 액정표시장치 구동장치.The common electrode potential according to the temperature signal of claim 1, wherein the control means 100 detects a signal by mounting a temperature sensor or the like to output a signal for constituting an image quality free from afterimages and flickering. (Vcom) is selected, the liquid crystal display drive device of the multiple common electrode potential. 제1항에 있어서, 상기 공통전극 구동수단(400)은, 상기 제어수단(100)의 출력단자에 일측단자가 연결되어 있는 타측단자가 접지되어 있는 코일(L)과; 상기 코일(L)의 작동에 연동되어 작동하며 제1공통전극 전위(Vcom1)와 상기 제1공통전극 전위(Vcom1)와 그 값이 다른 제2공통전극 전위(Vcom2)의 연결단자를 가지고 있는 스위치(SW)와; 상기 스위치(SW)의 타측단자가 비반전 입력단자로 연결되고, 반전 입력단자는 출력단자에서 궤환되는 신호가 연결된 연상증폭기(OP)로 이루어져 있는 것을 특징으로 하는 다중 공통전극 전위의 액정표시장치 구동장치.According to claim 1, The common electrode driving means 400, Coil (L) is connected to the output terminal of the control means 100, the other terminal is connected to one terminal; A switch which is linked to the operation of the coil L and has a connection terminal between a first common electrode potential Vcom1 and a second common electrode potential Vcom2 different from the first common electrode potential Vcom1. (SW); The other terminal of the switch SW is connected to a non-inverting input terminal, and the inverting input terminal is composed of an associative amplifier OP connected to a signal fed back from the output terminal. Device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950000984A 1995-01-20 1995-01-20 A liquid display driving system with multiple common electrode voltage KR0142469B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100508033B1 (en) * 1998-02-24 2005-10-27 삼성전자주식회사 LCD Display

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100467512B1 (en) * 1996-12-31 2005-04-19 삼성전자주식회사 LCD and its driving method
KR100635937B1 (en) * 1997-07-18 2007-01-31 삼성전자주식회사 Liquid crystal display
KR100495801B1 (en) * 1997-07-23 2005-09-15 삼성전자주식회사 Liquid crystal display device for compensating kickback voltage and driving method
KR19990051224A (en) * 1997-12-19 1999-07-05 김영환 Common Voltage Control Circuit of LCD
KR19990053687A (en) * 1997-12-24 1999-07-15 윤종용 Temperature Compensation Circuit of TF LCD
KR100365501B1 (en) * 2000-12-22 2002-12-18 엘지.필립스 엘시디 주식회사 Method Of Driving Liquid Crystal Display
KR100692679B1 (en) * 2000-12-29 2007-03-14 비오이 하이디스 테크놀로지 주식회사 Method for switching magnetic removal of lcd
KR100538330B1 (en) * 2002-08-08 2005-12-22 엘지.필립스 엘시디 주식회사 Liquid crystal display and driving method thereof
KR20040019207A (en) * 2002-08-27 2004-03-05 엘지.필립스 엘시디 주식회사 Organic electro-luminescence device and apparatus and method driving the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100508033B1 (en) * 1998-02-24 2005-10-27 삼성전자주식회사 LCD Display

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