KR20000003153A - Module controlling device of lcd(liquid crystal display) - Google Patents

Module controlling device of lcd(liquid crystal display) Download PDF

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Publication number
KR20000003153A
KR20000003153A KR1019980024312A KR19980024312A KR20000003153A KR 20000003153 A KR20000003153 A KR 20000003153A KR 1019980024312 A KR1019980024312 A KR 1019980024312A KR 19980024312 A KR19980024312 A KR 19980024312A KR 20000003153 A KR20000003153 A KR 20000003153A
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South Korea
Prior art keywords
signal
liquid crystal
crystal display
thin film
film transistor
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KR1019980024312A
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Korean (ko)
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KR100537887B1 (en
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이형곤
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윤종용
삼성전자 주식회사
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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
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • 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
    • G09G2330/027—Arrangements or methods related to powering off a display

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

Abstract

PURPOSE: LCD(Liquid Crystal Display) is provided to detect abnormal operation of screen at the digital interface and deliver into controlling PCB(Printed Circuit Board), thereby controlling the screen. CONSTITUTION: LCD(Liquid Crystal Display) comprises a system for outputting a vertical synchronizing signal, horizontal synchronizing signal, date enable signal, a detector for detecting a power and the outputting signal from the system, a driver for receiving a controlling signal of the detector and an outputting signal of the system, and a power back up device for supplying a power under the control of the detector.

Description

액정표시장치의 모듈제어장치Module control device of liquid crystal display

본 발명은 액정 표시 장치(liquid crystal display)에 관한 것으로서, 특히 액정 표시 장치의 모듈 제어 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to liquid crystal displays, and more particularly to a method for controlling a module of a liquid crystal display.

기존의 박막트랜지스터(thin film transistor) 액정 표시 장치를 이용한 디스플레이(display) 소자에서 디스플레이 소자에 인가되는 신호를 시스템으로부터 입력받고, 그 입력을 제어 PCB(printed circuit board)로 전달한다. 그 신호는 제어 PCB로부터 박막트랜지스터 액정 표시 장치의 구동회로의 입력단자에 전달되고, 다시 동기신호에 따라 출력단자를 통해 박막트랜지스터 액정 표시 장치로 전달된다.In a display device using a conventional thin film transistor liquid crystal display, a signal applied to the display device is input from a system, and the input signal is transmitted to a control printed circuit board (PCB). The signal is transmitted from the control PCB to the input terminal of the driving circuit of the thin film transistor liquid crystal display device, and again to the thin film transistor liquid crystal display device through the output terminal according to the synchronization signal.

박막트랜지스터 액정 표시 장치는 모니터용과 노트북(notebook)용으로 구분할 수 있으며, 다시 모니터용에는 아날로그 인터페이스(interface)와 디지털 인터페이스로 구분할 수 있다.The thin film transistor liquid crystal display may be classified into a monitor and a notebook, and may be divided into an analog interface and a digital interface.

아날로그 인터페이스는, 제1도에 도시된 바와 같이, 시스템부(10)와 ADC컨버터부(20)와 박막트랜지스터 액정 표시 장치 구동부(30)로 이루어져 있다. 여기서, ADC컨버터부(20)는 아날로그 신호를 디지털신호로 바꾸는 역할을 한다. 또한, 박막트랜지스터 액정 표시 장치 구동부(30)는 디스플레이부(60)와 제어PCB부(1)로 이루어져 있다.As illustrated in FIG. 1, the analog interface includes a system unit 10, an ADC converter unit 20, and a thin film transistor liquid crystal display driver 30. Here, the ADC converter unit 20 serves to convert an analog signal into a digital signal. The thin film transistor liquid crystal display driver 30 includes a display 60 and a control PCB 1.

디지털 인터페이스는, 제2도에 도시된 바와 같이, 시스템부(40)와 박막 액정 표시 장치 구동부(50)로 이루어져 있다.As illustrated in FIG. 2, the digital interface includes a system unit 40 and a thin film liquid crystal display driver 50.

아날로그 인터페이스는 통상적으로 ADC 컨버터부(20)에 마이크로 프로세서(microprocessor)를 내장하여 시스템부(10)와 박막트랜지스터 구동부(30)간의 상호 신호전달을 제어한다. 시스템부(10)는 박막트랜지스터 액정 표시 장치 구동부(30)로 제어신호와 색상신호를 전달하고, 박막트랜지스터 액정 표시 장치 구동부(30)는 구동부의 정보를 시스템부로 전달한다.The analog interface typically controls a signal transmission between the system unit 10 and the thin film transistor driver 30 by embedding a microprocessor in the ADC converter unit 20. The system unit 10 transmits a control signal and a color signal to the thin film transistor liquid crystal display driver 30, and the thin film transistor liquid crystal display driver 30 transmits information of the driver to the system unit.

박막트랜지스터 액정 표시 장치 구동부(30)에 인가되는 신호는 시스템부(10)에서 출력되는 신호에 따라 선택되는 것이며, 시스템부(10)의 기능에 따라 해상도가 달라질 수 있다. 이러한 신호체계에서 이상현상이 발생할 수 있는데, 발생원인은 해상도 변환이나 전달신호인 전원, 수직동기신호, 수평동기신호, 색상신호 및 제어신호들의 단선, 단락 및 노이즈(noise)에 의해 일어날 수 있다. 특히, 전원, 수직동기신호, 수평동기신호, 색상신호 및 제어신호 때문에 박막트랜지스터 액정 표시 장치에 화상이 찌그러지거나 깜박임 등이 발생할 수 있다.The signal applied to the thin film transistor liquid crystal display driver 30 is selected according to the signal output from the system unit 10, and the resolution may vary depending on the function of the system unit 10. Anomalies may occur in such a signal system, which may be caused by disconnection, short circuit, and noise of power, vertical synchronization, horizontal synchronization, color signals, and control signals, which are resolution conversion or transmission signals. In particular, an image may be distorted or flickered in the thin film transistor liquid crystal display due to a power supply, a vertical synchronization signal, a horizontal synchronization signal, a color signal, and a control signal.

이때 아날로그 인터페이스는 ADC컨버터부에서 이러한 현상을 제어하여 해결한다.At this time, the analog interface is solved by controlling this phenomenon in the ADC converter unit.

그러나, 디지털 인터페이스는 ADC컨버터부가 없으므로, 이러한 문제를 해결하기 어렵다.However, since the digital interface does not have an ADC converter portion, it is difficult to solve this problem.

본 발명은 이러한 문제를 해결하기 위한 것으로서, 디지털 인터페이스에서 화면의 비정상적 동작을 감지하여 제어 PCB로 보내어 화면을 제어하기 위한 것이다.The present invention is to solve this problem, it is to detect the abnormal operation of the screen in the digital interface to control the screen by sending to the control PCB.

도1은 아날로그 인터페이스를 도시한 것이고,1 shows an analog interface,

도2는 디지털 인터페이스를 도시한 것이고,2 illustrates a digital interface,

도3은 박막 트랜지스터 액정 표시 장치의 구동 모듈을 도시한 것이고,3 illustrates a driving module of a thin film transistor liquid crystal display device;

도4는 본 발명의 박막트랜지스터 액정표시장치의 모듈제어장치이다.4 is a module control device of the thin film transistor liquid crystal display device of the present invention.

상기한 과제를 달성하기 위한 본 발명에 따른 액정 표시 장치는,The liquid crystal display device according to the present invention for achieving the above object,

수직 동기 신호, 수평 동기 신호, 데이터 인에이블 신호를 출력하는 시스템부(110)와, 전원과 상기한 시스템부의 출력신호를 탐지하는 탐지부(120)와, 상기한 탐지부의 제어신호와 상기한 시스템부의 출력신호가 입력되는 박막트랜지스터 액정 표시 장치의 구동부(140)와, 상기한 탐지부의 제어에 따라 전원을 공급하는 전원 백업 장치(130)를 포함하며,A system unit 110 for outputting a vertical synchronization signal, a horizontal synchronization signal, and a data enable signal, a detector 120 for detecting a power supply and an output signal of the system unit, a control signal of the detector, and the system A driving unit 140 of the thin film transistor liquid crystal display device to which a negative output signal is input, and a power backup device 130 for supplying power according to the control of the detection unit;

상기한 박막트랜지스터 액정 표시 장치의 구동부(140)는,The driving unit 140 of the thin film transistor liquid crystal display device,

상기한 시스템부의 입력신호에 따라 게이트신호를 입력하는 게이트 구동부와, 상기한 시스템부의 입력신호에 따라 소스신호를 입력하는 소스 구동부와, 상기한 게이트 구동부와 소스 구동부의 신호에 따라 디스플레이 하는 박막 액정 표시장치의 디스플레이 패널을 포함한다.A thin film liquid crystal display displaying a gate driver for inputting a gate signal according to the input signal of the system unit, a source driver for inputting a source signal according to the input signal of the system unit, and a signal according to the signals of the gate driver and the source driver. And a display panel of the device.

도3은 종래의 액정 표시 장치를 도시한 것이다.3 shows a conventional liquid crystal display device.

도4는 본 발명에 따른 액정 표시 장치를 도시한 것이다.4 illustrates a liquid crystal display according to the present invention.

이하에서 본 발명에 따른 액정 표시 장치의 동작을 설명한다.Hereinafter, the operation of the liquid crystal display according to the present invention will be described.

시스템부(110)와 박막트랜지스터 액정 표시 장치의 구동부(140)로 전원의 공급이 중단되었을 때나 시스템부(110)의 출력신호가 제대로 전달되지 않을 때, 탐지부(120)에서 전원공급의 중단을 탐지한다. 탐지부(120)는 탐지된 신호에 따라 액정표시 장치의 구동부(140)를 제어한다.When the supply of power to the system unit 110 and the driver 140 of the thin film transistor liquid crystal display is stopped or when the output signal of the system unit 110 is not properly transmitted, the detection unit 120 stops the power supply. Detect. The detector 120 controls the driver 140 of the liquid crystal display according to the detected signal.

본 발명에 따른 액정 표시 장치에 따르면 디지털 인터페이스에서 화면의 비정상적 동작을 방지할 수 있다.According to the liquid crystal display according to the present invention, it is possible to prevent abnormal operation of the screen in the digital interface.

Claims (2)

수직 동기 신호, 수평 동기 신호, 데이터 인에이블 신호를 출력하는 시스템부와,A system unit for outputting a vertical synchronization signal, a horizontal synchronization signal, and a data enable signal; 전원과 상기한 시스템부의 출력신호를 탐지하는 탐지부와,A detector for detecting a power supply and an output signal of the system unit; 상기한 탐지부의 제어신호와 상기한 시스템부의 출력신호가 입력되는 박막트랜지스터 액정표시장치의 구동부와,A driving unit of a thin film transistor liquid crystal display device to which the control signal of the detection unit and the output signal of the system unit are input; 상기한 탐지부의 제어에 따라 전원을 공급하는 전원 백업 장치를 포함하는 박막트랜지스터 액정표시장치.A thin film transistor liquid crystal display comprising a power backup device for supplying power under the control of the detector. 제1항에서,In claim 1, 상기한 박막트랜지스터 액정표시장치의 구동부는,The driving unit of the thin film transistor liquid crystal display device, 상기한 시스템부의 입력신호에 따라 게이트신호를 입력하는 게이트 구동부와,A gate driver for inputting a gate signal according to the input signal of the system unit; 상기한 시스템부의 입력신호에 따라 소스신호를 입력하는 소스 구동부와,A source driver for inputting a source signal according to the input signal of the system unit; 상기한 게이트 구동부와 소스 구동부의 신호에 따라 디스플레이 하는 박막 액정표시장치의 디스플레이 패널을 포함하는 박막트랜지스터 액정표시장치.A thin film transistor liquid crystal display comprising a display panel of a thin film liquid crystal display for displaying in response to the signal of the gate driver and the source driver.
KR1019980024312A 1998-06-26 1998-06-26 Module control device of liquid crystal display KR100537887B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100642853B1 (en) * 1999-06-30 2006-11-13 비오이 하이디스 테크놀로지 주식회사 LCD power control circuit
KR20160122581A (en) 2015-04-14 2016-10-24 김유인 Laser irradiator for skin treatment and medical treatment method thereof
KR20160122585A (en) 2015-04-14 2016-10-24 김유인 Laser irradiator for skin treatment and medical treatment method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039320A (en) * 1989-06-06 1991-01-17 Asahi Optical Co Ltd Liquid crystal display device
JP2840374B2 (en) * 1990-04-13 1998-12-24 キヤノン株式会社 Display control device
US5757365A (en) * 1995-06-07 1998-05-26 Seiko Epson Corporation Power down mode for computer system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100642853B1 (en) * 1999-06-30 2006-11-13 비오이 하이디스 테크놀로지 주식회사 LCD power control circuit
KR20160122581A (en) 2015-04-14 2016-10-24 김유인 Laser irradiator for skin treatment and medical treatment method thereof
KR20160122585A (en) 2015-04-14 2016-10-24 김유인 Laser irradiator for skin treatment and medical treatment method thereof

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