KR880014507A - LED Drive Integrated Circuit - Google Patents

LED Drive Integrated Circuit Download PDF

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Publication number
KR880014507A
KR880014507A KR870005521A KR870005521A KR880014507A KR 880014507 A KR880014507 A KR 880014507A KR 870005521 A KR870005521 A KR 870005521A KR 870005521 A KR870005521 A KR 870005521A KR 880014507 A KR880014507 A KR 880014507A
Authority
KR
South Korea
Prior art keywords
light emitting
circuit
emitting diode
transistor
diode driving
Prior art date
Application number
KR870005521A
Other languages
Korean (ko)
Other versions
KR890004381B1 (en
Inventor
강대봉
이욱원
Original Assignee
강진구
삼성반도체통신 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 강진구, 삼성반도체통신 주식회사 filed Critical 강진구
Priority to KR1019870005521A priority Critical patent/KR890004381B1/en
Publication of KR880014507A publication Critical patent/KR880014507A/en
Application granted granted Critical
Publication of KR890004381B1 publication Critical patent/KR890004381B1/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
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
    • G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
    • G09G3/14—Semiconductor devices, e.g. diodes

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Led Devices (AREA)

Abstract

내용 없음No content

Description

발광다이오드 구동 집적회로LED Drive Integrated Circuit

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

제2도는 본 발명의 회로를 개략적으로 나타낸 블럭도, 제3도는 제2도의 세부 블럭도,제4도는 제3도의 상세 회로도.2 is a schematic block diagram of a circuit of the present invention, FIG. 3 is a detailed block diagram of FIG. 2, and FIG. 4 is a detailed circuit diagram of FIG.

Claims (3)

발광다이오드를 직렬로 연결하여 구동하는 레벨 표시회로에 있어서, 직렬 연결된 수개의 발광다이오드와 입력 차동증폭기(A2) 사이에, 바이어스를 위한 전류 소오스회로(I1)로부터 컴퍼레이터(D2)를 연결하고, 컴퍼레이터(D2)의 출력단에 트랜지스터 제어회로(E2)를 연결하며, 트랜지스터 제어회로(E2)에 의하여 전류소오스(I2)에 연결된 발광다이오드 구동회로(F2)와 직렬방식 구동회로(C1)를 연결하여 입력 자동증폭기(A2)로부터 각 발광다이오드의 캐소우드에 연결하는 것을 특징으로 하는 발광다이오드 구동 질적회로.In a level display circuit for driving light emitting diodes connected in series, a comparator (D 2 ) is connected from a current source circuit (I1) for bias between several light emitting diodes connected in series and an input differential amplifier (A 2 ). The transistor control circuit E 2 is connected to the output terminal of the comparator D 2 , and is connected in series with the light emitting diode driving circuit F 2 connected to the current source I 2 by the transistor control circuit E 2 . A light emitting diode driving qualitative circuit, characterized in that for connecting the drive circuit (C 1 ) to the cathode of each light emitting diode from the input automatic amplifier (A 2 ). 제1항에 있어서, 발광다이오드 구동회로(F2)는 차동증폭용 트랜지스터(Q12, Q13)와 다알링톤 접속 트랜지스터(Q10, Q11)와 전원인가 트랜지스터(Q9)와 스위치용 트랜지스터(Q14) 및 저항(R3, R4)의 조합으로 이루어지는 것을 특징으로 하는 발광다이오드 구동 집적회로.2. The light emitting diode driving circuit (F 2 ) according to claim 1, wherein the light emitting diode driving circuit (F 2 ) includes differential amplification transistors (Q 12 , Q 13 ), multi-arlington connection transistors (Q 10 , Q 11 ), a power supply transistor (Q 9 ), and a switching transistor A light emitting diode driving integrated circuit comprising a combination of (Q 14 ) and resistors (R 3 , R 4 ). 제1항에 있어서, 직렬방식 구동회로(G1)는 전원인가 트랜지스터(Q15)와 스위치용 트랜지스터(Q16)와 제어신호 발생 트랜지스터(q17) 및 저항(R5-R7)의 조합으로 이루어지는 것을 특징으로 하는 발광다이오드 구동 직접회로.The series driving circuit G 1 is a combination of a power supply transistor Q 15 , a switch transistor Q 16 , a control signal generation transistor q 17 , and a resistor R 5 -R 7 . Light emitting diode driving integrated circuit, characterized in that consisting of. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019870005521A 1987-05-30 1987-05-30 Intergrated circuit for led drive KR890004381B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019870005521A KR890004381B1 (en) 1987-05-30 1987-05-30 Intergrated circuit for led drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019870005521A KR890004381B1 (en) 1987-05-30 1987-05-30 Intergrated circuit for led drive

Publications (2)

Publication Number Publication Date
KR880014507A true KR880014507A (en) 1988-12-24
KR890004381B1 KR890004381B1 (en) 1989-10-31

Family

ID=19261854

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870005521A KR890004381B1 (en) 1987-05-30 1987-05-30 Intergrated circuit for led drive

Country Status (1)

Country Link
KR (1) KR890004381B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100714277B1 (en) * 2006-07-12 2007-05-11 주식회사 인스모바일 A serial connection-typed led module for level meter and level meter thereby

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100714277B1 (en) * 2006-07-12 2007-05-11 주식회사 인스모바일 A serial connection-typed led module for level meter and level meter thereby

Also Published As

Publication number Publication date
KR890004381B1 (en) 1989-10-31

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