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KR970028973A - Backlight control circuit - Google Patents

Backlight control circuit Download PDF

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Publication number
KR970028973A
KR970028973A KR1019950043753A KR19950043753A KR970028973A KR 970028973 A KR970028973 A KR 970028973A KR 1019950043753 A KR1019950043753 A KR 1019950043753A KR 19950043753 A KR19950043753 A KR 19950043753A KR 970028973 A KR970028973 A KR 970028973A
Authority
KR
South Korea
Prior art keywords
unit
touch panel
panel unit
backlight
touch
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
KR1019950043753A
Other languages
Korean (ko)
Inventor
장원찬
Original Assignee
김주용
현대전자산업 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 김주용, 현대전자산업 주식회사 filed Critical 김주용
Priority to KR1019950043753A priority Critical patent/KR970028973A/en
Publication of KR970028973A publication Critical patent/KR970028973A/en
Withdrawn legal-status Critical Current

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Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

배터리를 사용하는 휴대용 컴퓨터 시스템.Portable computer system using batteries.

2. 발명이 해결하려고 하는 기술적 과제2. The technical problem to be solved by the invention

배터리의 전력소모를 최소로 하면서 조도가 낮은 곳에서도 LCD 패널의 표시상태를 확인 및 사용할 수 있도록 하는 것임.It is to make sure that the display state of LCD panel can be checked and used even in low light while minimizing battery power consumption.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

터치 패널부(1)의 접촉에 따라 발생되는 전압의 변화를 누름 판별부(2)가 미리 설정된 기준 전압과 비교하여 터치 패널부(1)를 접촉하였는지를 판단하고, 터치 패널부(1)의 접촉시 누름 판별부(2)의 출력신호를 증폭기(3)가 증폭하고, 백라이트 제어부(4)가 제어신호를 발생하며, 발생한 제어신호에 따라 타이머(5)가 동작하여 조명부(6)가 타이머(5)에 미리 설정된 시간 동안 백라이트용 램프(L)를 점등 및 LCD 패널을 조명한다.The change of the voltage generated according to the touch of the touch panel unit 1 is pressed, and it is determined whether the touch determining unit 2 has touched the touch panel unit 1 compared with the preset reference voltage, and the touch panel unit 1 contacts the touch panel unit 1. The amplifier 3 amplifies the output signal of the time pressing determination unit 2, the backlight control unit 4 generates a control signal, and the timer 5 operates according to the generated control signal so that the lighting unit 6 generates a timer ( 5) The backlight lamp (L) is turned on for a preset time and the LCD panel is illuminated.

4. 발명의 중요한 용도4. Important uses of the invention

LCD 패널의 표시장치로 사용하는 휴대용 컴퓨터 시스템에서 LCD 패널의 백라이트 조명을 제어하는 것임.To control the backlight lighting of LCD panels in portable computer systems used as LCD panel displays.

Description

백라이트 제어회로Backlight control circuit

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

첨부된 도면은 본 고안의 제어회로도이다.The accompanying drawings are control circuit diagrams of the present invention.

Claims (2)

터치 패널부(1)가 접촉되는지를 판별하는 누름 판별부(2)와, 상기 누름판별부(2)의 출력신호를 증폭하는 증폭기(3)와, 상기 터치 패널부(1)의 누름시 상기 증폭기(3)의 출력신호로 백라이트 제어신호를 발생하는 백라이트 제어부(4)와, 상기 백라이트 제어부(4)의 제어신호에 따라 트리거되어 미리 설정된 시간동안 구동신호를 발생하는 타이머(5)와, 상기 타이머(5)의 출력신호에 따라 구동되어 LCD 패널을 조명하는 조명부(7)로 구성됨을 특징으로 하는 백라이트 제어회로.A press determining unit 2 for determining whether the touch panel unit 1 is in contact, an amplifier 3 for amplifying an output signal of the press discriminating unit 2, and when the touch panel unit 1 is pressed A backlight controller 4 which generates a backlight control signal as an output signal of the amplifier 3, a timer 5 which is triggered according to the control signal of the backlight controller 4 and generates a driving signal for a preset time period, and And a lighting unit (7) which is driven according to the output signal of the timer (5) to illuminate the LCD panel. 제1항에 있어서, 누름 판별부(2)는 터치 패널부(1)의 누름에 따라 전압이 변환되도록 하는 저항(R1,R2)과 기준전압을 설정하는 저항(R3,R4)와, 상기 저항(R1,R2) 및 저항(R3,R4)에 의한 전압을 비교하여 터치 패널부(1)의 누름을 판단하는 비교기(21)로 구성됨을 특징으로 하는 백라이트 제어회로.According to claim 1, Press determination unit 2 is a resistor (R 1 , R 2 ) for setting the reference voltage and the resistor (R 3 , R 4 ) so that the voltage is converted as the touch panel unit 1 is pressed. And a comparator 21 for comparing the voltages of the resistors R 1 and R 2 and the resistors R 3 and R 4 to determine the pressing of the touch panel unit 1. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950043753A 1995-11-25 1995-11-25 Backlight control circuit Withdrawn KR970028973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950043753A KR970028973A (en) 1995-11-25 1995-11-25 Backlight control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950043753A KR970028973A (en) 1995-11-25 1995-11-25 Backlight control circuit

Publications (1)

Publication Number Publication Date
KR970028973A true KR970028973A (en) 1997-06-26

Family

ID=66588840

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950043753A Withdrawn KR970028973A (en) 1995-11-25 1995-11-25 Backlight control circuit

Country Status (1)

Country Link
KR (1) KR970028973A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101336085B1 (en) * 2011-10-20 2013-12-05 한국과학기술원 Power-Saving Method Using Lighting Control of Touch Area and Power-Saving Type Display Device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101336085B1 (en) * 2011-10-20 2013-12-05 한국과학기술원 Power-Saving Method Using Lighting Control of Touch Area and Power-Saving Type Display Device

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Legal Events

Date Code Title Description
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19951125

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid