KR940012004A - Backlight automatic adjustment device of liquid crystal display - Google Patents

Backlight automatic adjustment device of liquid crystal display Download PDF

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Publication number
KR940012004A
KR940012004A KR1019920021480A KR920021480A KR940012004A KR 940012004 A KR940012004 A KR 940012004A KR 1019920021480 A KR1019920021480 A KR 1019920021480A KR 920021480 A KR920021480 A KR 920021480A KR 940012004 A KR940012004 A KR 940012004A
Authority
KR
South Korea
Prior art keywords
signal
backlight
liquid crystal
crystal display
comparison result
Prior art date
Application number
KR1019920021480A
Other languages
Korean (ko)
Inventor
백승일
Original Assignee
정용문
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 정용문, 삼성전자 주식회사 filed Critical 정용문
Priority to KR1019920021480A priority Critical patent/KR940012004A/en
Publication of KR940012004A publication Critical patent/KR940012004A/en

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  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

본 발명에 따라 액정디스플레이의 백라이트 조절장치에서 주위 환경이 조도에 따라 자동적으로 백라이트의 밝기를 조절해주는 장치는, 주위 환경의 조도를 감지해서 감지신호를 출력하는 광감지부와, 하나 이상의 기준신호를 구비하며 상기 감지신호들과 각각 비교한 후 비교 결과 신호를 출력하는 비교부와, 상기 비교결과 신호를 수신하며 상기 비교 결과 신호에 대응하여 미리 설정된 제어 신호를 출력하는 제어부와 상기 제어 신호를 수신하며 백라이트의 밝기가 조절되는 신호로 변환하는 변환부를 포함하고 있다.According to the present invention, a device for automatically adjusting the brightness of a backlight according to the ambient light in the backlight control device of the liquid crystal display includes a light sensing unit for detecting the ambient light and outputting a detection signal, and at least one reference signal. And a comparison unit configured to compare the detection signals with each other and output a comparison result signal, a control unit receiving the comparison result signal and outputting a control signal preset in response to the comparison result signal, It includes a conversion unit for converting the brightness of the backlight is controlled.

Description

액정 디스플레이의 백라이트 자동 조절 장치Backlight automatic adjustment device of liquid crystal display

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 따른 구체적 실시도,2 is a specific embodiment according to the present invention,

제3도는 제2도중 광감지부의 특성도.3 is a characteristic diagram of the light sensing unit in FIG. 2.

Claims (3)

액정 디스플레이의 백라이트 조절 장치에 있어서, 주위 환경의 조도를 감지해서 감지신호를 출력하는 광감지부와, 하나 이상의 기준신호를 구비하여 상기 감지신호들과 각각 비교한 후 비교 결과 신호를 출력하는 비교부와, 상기 비교결과 신호를 수신하며 상기 비교결과 신호에 대응하여 미리 설정된 제어신호를 출력하는 제어부와, 상기 제어신호를 수신하며 백라이트의 밝기가 조절되는 신호로 변환하는 변환부로 구성됨을 특징으로 하는 백라이트 자동 조절 장치.An apparatus for adjusting a backlight of a liquid crystal display, the apparatus comprising: an optical sensing unit for sensing an illumination of an ambient environment and outputting a sensing signal; And a control unit for receiving the comparison result signal and outputting a control signal preset in response to the comparison result signal, and a converter for receiving the control signal and converting the control signal into a signal whose brightness is controlled. Self-regulating device. 제1항에 있어서, 비교부가 4개의 기준 신호를 구비하는 비교기로 구성됨을 특징으로 하는 장치.The apparatus of claim 1, wherein the comparator comprises a comparator having four reference signals. 제1항에 있어서, 광감지부가 포토트랜지스터임을 특징으로 하는 장치.The apparatus of claim 1, wherein the light sensing unit is a phototransistor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920021480A 1992-11-16 1992-11-16 Backlight automatic adjustment device of liquid crystal display KR940012004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920021480A KR940012004A (en) 1992-11-16 1992-11-16 Backlight automatic adjustment device of liquid crystal display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920021480A KR940012004A (en) 1992-11-16 1992-11-16 Backlight automatic adjustment device of liquid crystal display

Publications (1)

Publication Number Publication Date
KR940012004A true KR940012004A (en) 1994-06-22

Family

ID=67210949

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920021480A KR940012004A (en) 1992-11-16 1992-11-16 Backlight automatic adjustment device of liquid crystal display

Country Status (1)

Country Link
KR (1) KR940012004A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100480062B1 (en) * 2002-09-13 2005-03-30 엘지전자 주식회사 Backlight control method for mobile communication device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100480062B1 (en) * 2002-09-13 2005-03-30 엘지전자 주식회사 Backlight control method for mobile communication device

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