KR950019829A - 승압회로장치 - Google Patents

승압회로장치 Download PDF

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Publication number
KR950019829A
KR950019829A KR1019940032707A KR19940032707A KR950019829A KR 950019829 A KR950019829 A KR 950019829A KR 1019940032707 A KR1019940032707 A KR 1019940032707A KR 19940032707 A KR19940032707 A KR 19940032707A KR 950019829 A KR950019829 A KR 950019829A
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South Korea
Prior art keywords
circuit
output
drive signal
selection
current load
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KR1019940032707A
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KR0139879B1 (ko
Inventor
마사유키 가와사키
야스노리 구와시마
히데히코 다치바나
시우지 가츠키
아키히로 스에다
Original Assignee
사토 후미오
가부시키가이샤 도시바
오카모토 세이시
도시바 마이크로일렉트로닉스 가부시키가이샤
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Publication of KR950019829A publication Critical patent/KR950019829A/ko
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Publication of KR0139879B1 publication Critical patent/KR0139879B1/ko
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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
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • 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
    • 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
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • 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
    • 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
    • G09G2330/021—Power management, e.g. power saving

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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)
  • Power Engineering (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Dc-Dc Converters (AREA)
  • Liquid Crystal (AREA)

Abstract

본 발명은 액정의 표시품질을 향상시키고 소비전류를 저감하도록 된 승압회로장치를 제공하기 위한 것이다.
이를 위한 본 발명은, 표시패널(15)에 구동신호 SEG및 COM을 공급하는 액정구동회로(14)와, 이 액정구동회로(14)의 소비전류에 따라 선택신호를 생성하여 출력하는 타이밍회로(11), 타이밍회로(11)로부터 출력된 선택신호에 기초하여 주파수가 다른 적어도 2종류의 구동신호 CLK중 어느 것인가를 선택하여 출력하는 구동신호 선택회로(12), 출력된 구동신호 CLSK를 부여받아서 액정구동회로(14)에 구동전원전압을 공급하는 승압회로(13)를 구비하고 있다.

Description

승압회로장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예에 의한 스압회로장치의 구성을 나타낸 블록도,
제2도는 동 승압회로장치에 있어서의 소비전류와 구동신호 CLK의 관계를 나타낸 타임 챠트,
제3도는 본 발명의 제2실시예에 의한 승압회로장치에 있어서의 구동신호 선택회로를 나타낸 블록도,

Claims (4)

  1. 주기적으로 소비전류가 변화하는 전류부하회로와, 상기 전류부하회로의 소비전류에 따라 선택신호를 생성하여 출력하는 타이밍회로, 상기 타이밍회로로부터 출력된 상기 선택신호에 기초하여 주파수가 다른 적어도 2종류의 구동신호중 어느 것인가를 선택하여 출력하는 구동신호 선택회로, 상기 구동신호 선택회로로부터 출력된 상기 구동신호를 부여받아서 상기 전류부하회로에 전원전압을 공급하는 승압회로를 구비한 것을 특징으로 하는 승압회로장치.
  2. 주기적으로 소비전류가 변화하는 전류부하회로와, 상기 전류부하회로의 소비전류에 따라 선택신호를 생성하여 출력하는 타이밍회로, 상기 타이밍회로로부터 출력된 상기 선택신호에 기초하여, 상기 전류부하회로의 소비전류가 소정치보다도 큰 경우에는 주파수가 다른 적어도 2종류의 구동신호중 어느 것인가를 선택하여 출력하고, 상기 전류부하회로의 소비전류가 소정치 이하인 경우에는 구동신호의 출력을 정지시키는 구동신호 선택회로, 상기 구동신호 선택회로로부터 출력된 상기 구동신호를 부여받아서 상기 전류부하회로에 전원전압을 공급하는 승압회로를 구비한 것을 특징으로 하는 승압회로장치.
  3. 주기적으로 소비전류가 변화하는 전류부하회로와, 상기 전류부하회로의 소비전류가 소정치보다도 큰 때에 고속클록 선택신호를 출력하고, 상기 전류부하회로의 소비전류가 소정치 이하인 때에 저속클록 선택신호를 출력하는 타이밍회로, 상기 타이밍회로로부터 상기 저속클록이 출력된 경우에는 제1주파수를 갖는 저속클록을 선택하고, 상기 타이밍회로로부터 상기 고속클록이 출력된 경우에는 상기 제1주파수보다도 주파수가 높은 적어도 2종류의 고속클록중 어느 것인가를 선택해서 출력하는 구동신호 선택회로, 상기 구동신호 선택회로로부터 출력된 상기 구동신호를 부여받아서 상기 전류부하회로에 전원전압을 공급하는 승압회로, 상기 타이밍회로로부터 상기 고속클록이 출력된 경우, 상기 승압회로로부터 출력된 전원전압과 기준전압을 비교하고, 상기 전원전압이 상기 기준전압까지 도달하기까지의 사이에, 상기 고속클록중 순차적으로 주파수가 높은 것을 상기 구동신호로서 출력하도록 상기 구동신호 선택회로를 제어하는 제어수단을 구비한 것을 특징으로 하는 승압회로장치.
  4. 주기적으로 소비전류가 변화하는 전류부하회로와, 상기 전류부하회로의 소비전류가 증대되는 시점보다도 빠른 시점으로부터 소정기간 선택신호를 출력하고, 상기 소정기간 경과후에는 상기 선택신호의 출력을 정지시키는 타이밍회로, 상기 타이밍회로로부터 상기 선택신호가 출력되고 있는 사이에 구동신호를 출력하고, 상기 선택신호가 출력되고 있지 않은 사이에는 상기 구동신호의 출력을 정지시키는 구동신호 선택회로, 상기 구동신호 선택회로로부터 출력된 상기 구동신호를 부여받아서 상기 전류부하회로에 전원전압을 공급하는 승압회로를 구비한 것을 특징으로 하는 승압회로장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940032707A 1993-12-09 1994-12-03 승압회로장치 Expired - Fee Related KR0139879B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30907693A JP3159586B2 (ja) 1993-12-09 1993-12-09 昇圧回路装置
JP93-309076 1993-12-09

Publications (2)

Publication Number Publication Date
KR950019829A true KR950019829A (ko) 1995-07-24
KR0139879B1 KR0139879B1 (ko) 1998-07-01

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US (1) US5587683A (ko)
JP (1) JP3159586B2 (ko)
KR (1) KR0139879B1 (ko)

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Publication number Publication date
JP3159586B2 (ja) 2001-04-23
KR0139879B1 (ko) 1998-07-01
US5587683A (en) 1996-12-24
JPH07160215A (ja) 1995-06-23

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