KR960019047A - Indicator brightness control - Google Patents

Indicator brightness control Download PDF

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Publication number
KR960019047A
KR960019047A KR1019940028787A KR19940028787A KR960019047A KR 960019047 A KR960019047 A KR 960019047A KR 1019940028787 A KR1019940028787 A KR 1019940028787A KR 19940028787 A KR19940028787 A KR 19940028787A KR 960019047 A KR960019047 A KR 960019047A
Authority
KR
South Korea
Prior art keywords
emitting diode
led
transistors
light emitting
output port
Prior art date
Application number
KR1019940028787A
Other languages
Korean (ko)
Other versions
KR970008764B1 (en
Inventor
민영모
임희권
Original Assignee
이영서
동양매직 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 이영서, 동양매직 주식회사 filed Critical 이영서
Priority to KR94028787A priority Critical patent/KR970008764B1/en
Publication of KR960019047A publication Critical patent/KR960019047A/en
Application granted granted Critical
Publication of KR970008764B1 publication Critical patent/KR970008764B1/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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • G09G2330/028—Generation of voltages supplied to electrode drivers in a matrix display other than LCD

Abstract

본 발명은 표시기의 불밝기를 강, 약으로 조절할 수 있도록 한 것으로, 발광다이오드(LED1∼LED5)를 구동시켜 주는 트랜지스터(Q3)(Q4)를 병렬 설치하고, 에미터단을 레귤레이터(LC1)를 입·출력에 각각 설치하여 트랜지스터(Q3)의 도통시에는 발광다이오드의 불밝기가 강이 되도록 하고 트랜지스터(Q3)의 불통시에는 발광다이오드의 불밝기가 약이 되도록 하여 표시기의 기능다양화가 가능토록 한 것이다.According to the present invention, the brightness of the indicator can be adjusted strongly or weakly. The transistors Q 3 and Q 4 for driving the light emitting diodes LED 1 to LED 5 are installed in parallel, and the emitter stage is provided as a regulator. LC 1) the respectively installed on the input and the output transistor (Q 3) conductive during when interruptions of the light brightness of the light emitting diode and so a strong transistor (Q 3), the indicator to ensure that the weak light brightness of the light emitting diode of The diversification of functions is possible.

Description

표시기의 불밝기 조절장치Indicator brightness control

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

제2도는 본 발명의 표시기 구동회로도.2 is an indicator driving circuit diagram of the present invention.

Claims (1)

마이콤(MICOM)의 각 출력포트에 발광다이오드(LED1∼LED5)를 설치하고 동발광다이오드를 스위칭트랜지스터(Q1)(Q2)에 연결시켜 상기 발광다이오드(LED1∼LED5)로의 전원공급이 실시되도록 한 표시장치에 있어서, 상기 스위칭트랜지스터(Q1)(Q2) 각 에미터단에 트랜지스터(Q3)(Q4)를 병렬 연결하고, 동 트랜지스터(Q3)(Q4)의 베이스단은 마이콤(MICOM)의 출력포트(P6)(P7)에 접속하며, 상기 트랜지스터(Q3)(Q4)의 에미터단을 정전압회로인 레귤레이터(IC1)의 입력(-12V)과 출력(-5V)에 각각 접속하여서 마이콤(MICOM)의 출력포트(P6)가 하이상태를 유지하고 출력포트(P7)는 로우상태를 유지시 전원이 트랜지스터(Q4)의 콜렉터방향으로 흘러 발광다이오드의 불밝기조절이 이루어지도록 함을 특징으로 하는 표시기의 불밝기 조절장치.To install a microprocessor-emitting diode (LED 1 ~LED 5) for each output port of the (MICOM) and connect the same light-emitting diode to the switching transistor (Q 1) (Q 2) the power to the light emitting diode (LED 1 ~LED 5) In the display device to be supplied, transistors Q 3 and Q 4 are connected in parallel to each emitter stage of the switching transistors Q 1 and Q 2 , and the transistors Q 3 and Q 4 are connected. The base terminal is connected to the output port P 6 (P 7 ) of the MICOM, and the emitter terminal of the transistors Q 3 and Q 4 is connected to the input (-12V) of the regulator IC 1 which is a constant voltage circuit. When the output port P 6 of the MICOM is kept high and the output port P 7 is kept low by connecting to the output (-5V), the power flows in the collector direction of the transistor Q 4 . The brightness control device of the indicator, characterized in that the light control of the light emitting diode is made. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR94028787A 1994-11-03 1994-11-03 Apparatus for controlling degree of brightness in a display device KR970008764B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR94028787A KR970008764B1 (en) 1994-11-03 1994-11-03 Apparatus for controlling degree of brightness in a display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR94028787A KR970008764B1 (en) 1994-11-03 1994-11-03 Apparatus for controlling degree of brightness in a display device

Publications (2)

Publication Number Publication Date
KR960019047A true KR960019047A (en) 1996-06-17
KR970008764B1 KR970008764B1 (en) 1997-05-28

Family

ID=19397036

Family Applications (1)

Application Number Title Priority Date Filing Date
KR94028787A KR970008764B1 (en) 1994-11-03 1994-11-03 Apparatus for controlling degree of brightness in a display device

Country Status (1)

Country Link
KR (1) KR970008764B1 (en)

Also Published As

Publication number Publication date
KR970008764B1 (en) 1997-05-28

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