KR100455467B1 - 발광 소자용 화소 회로 - Google Patents
발광 소자용 화소 회로 Download PDFInfo
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- KR100455467B1 KR100455467B1 KR10-2002-0079093A KR20020079093A KR100455467B1 KR 100455467 B1 KR100455467 B1 KR 100455467B1 KR 20020079093 A KR20020079093 A KR 20020079093A KR 100455467 B1 KR100455467 B1 KR 100455467B1
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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
- G09G3/22—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
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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
- G09G3/22—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]
- G09G3/3208—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] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—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] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0852—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor being a dynamic memory with more than one capacitor
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0223—Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0252—Improving the response speed
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
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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
- G09G3/22—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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Claims (12)
- 발광 소자를 위한 화소 회로로서,(ⅰ) 전류 구동형의 발광 소자와,(ⅱ) 상기 발광 소자에 흐르는 전류의 경로에 설치된 구동 트랜지스터와,(ⅲ) 상기 구동 트랜지스터의 제어 전극에 접속되어 있고, 소정의 전류 신호선을 통하여 외부의 전류 생성 회로로부터 공급되는 전류 신호의 전류값에 따른 전하량을 유지함으로써, 상기 구동 트랜지스터에 흐르는 전류값을 설정하기 위한 유지 커패시터와,(ⅳ) 상기 유지 커패시터와 상기 전류 신호선과의 사이에 접속되어 있고, 상기 전류 신호에 따라서 상기 유지 커패시터에 전하를 공급할 것인지의 여부를 제어하기 위한 제 1 스위칭 트랜지스터를 포함하고, 상기 전류 신호의 전류값에 따라서 상기 발광 소자의 발광의 계조가 조절되는 전류 프로그래밍 회로와,상기 유지 커패시터에 접속되어 있고, 소정의 전압 신호선을 통하여 외부의 전압 생성 회로로부터 공급되는 전압 신호에 따라서 상기 유지 커패시터에 전하를 공급할 것인지의 여부를 제어하기 위한 제 2 스위칭 트랜지스터를 구비하는 화소 회로.
- 제 1 항에 있어서,상기 유지 커패시터와 상기 제 1 스위칭 트랜지스터 사이에 직렬로 접속된 제 3 스위칭 트랜지스터를 더 구비하는 화소 회로.
- 제 1 항 또는 제 2 항에 있어서,상기 유지 커패시터로의 전하의 공급은, 상기 전압 신호에 의한 전하의 공급이 완료된 후에 상기 전류 신호에 의한 전하의 공급이 완료되도록 실행되는 화소 회로.
- 제 3 항에 있어서,상기 유지 커패시터로의 상기 전류 신호에 의한 전하의 공급은 상기 전압 신호에 의한 전하의 공급이 완료된 후에 개시되는 화소 회로.
- 액티브 매트릭스 구동법에 의해 구동되는 전기 광학 장치로서,발광 소자를 포함하는 복수의 화소 회로가 매트릭스 형상으로 배열된 화소 회로 매트릭스와,상기 화소 회로 매트릭스의 행방향을 따라 배열된 화소 회로군에 각각 접속된 복수의 주사선과,상기 화소 회로 매트릭스의 열방향을 따라 배열된 화소 회로군에 각각 접속된 복수의 데이터선과,상기 복수의 주사선에 접속되어, 상기 화소 회로 매트릭스의 1개의 행을 선택하기 위한 주사선 구동 회로와,상기 발광 소자의 발광의 계조에 따른 데이터 신호를 생성하여, 상기 복수의 데이터선 중의 적어도 1개의 데이터선 상으로 출력하는 것이 가능한 데이터 신호 생성 회로를 구비하고,상기 데이터 신호 생성 회로는, 상기 데이터선 상으로 출력되는 제 1 데이터 신호로서의 전류 신호를 생성하기 위한 전류 생성 회로와, 상기 데이터선 상으로 출력되는 제 2 데이터 신호로서의 전압 신호를 생성하기 위한 전압 생성 회로를 포함하고,상기 화소 회로는,(ⅰ) 전류 구동형의 발광 소자와,(ⅱ) 상기 발광 소자에 흐르는 전류의 경로에 설치된 구동 트랜지스터와,(ⅲ) 상기 구동 트랜지스터의 제어 전극에 접속되어 있고, 상기 전류 생성 회로로부터 공급되는 전류 신호의 전류값에 따른 전하량을 유지함으로써, 상기 구동 트랜지스터에 흐르는 전류값을 설정하기 위한 유지 커패시터와,(ⅳ) 상기 유지 커패시터와 상기 데이터선 사이에 접속되어 있고, 상기 전류 신호에 따라서 상기 유지 커패시터에 전하를 공급할 것인지의 여부를 제어하기 위한 제 1 스위칭 트랜지스터를 포함하고, 상기 전류 신호의 전류값에 따라서 상기 발광 소자의 발광의 계조가 조절되는 전류 프로그래밍 회로와,상기 유지 커패시터에 접속되어 있고, 상기 전압 생성 회로로부터 공급되는 전압 신호에 따라서 상기 유지 커패시터에 전하를 공급할 것인지의 여부를 제어하기 위한 제 2 스위칭 트랜지스터를 구비하는 전기 광학 장치.
- 제 5 항에 있어서,1열분의 화소 회로군을 위한 데이터선은, 상기 전류 신호를 전송하기 위한 전류 신호선과, 상기 전압 신호를 전송하기 위한 전압 신호선을 포함하는 전기 광학 장치.
- 제 5 항 도는 제 6 항에 있어서,상기 유지 커패시터와 상기 제 1 스위칭 트랜지스터 사이에 직렬로 접속된 제 3 스위칭 트랜지스터를 더 구비하는 전기 광학 장치.
- 제 5 항에 있어서,상기 유지 커패시터로의 전하의 공급은, 상기 전압 신호에 의한 전하의 공급이 완료된 후에 상기 전류 신호에 의한 전하의 공급이 완료되도록 실행되는 전기 광학 장치.
- 제 8 항에 있어서,상기 유지 커패시터로의 상기 전류 신호에 의한 전하의 공급은, 상기 전압신호에 의한 전하의 공급이 완료된 후에 개시되는 전기 광학 장치.
- 전류 구동형 발광 소자와, 상기 발광 소자에 흐르는 전류의 경로에 설치된 구동 트랜지스터와, 상기 구동 트랜지스터의 제어 전극에 접속되어 상기 구동 트랜지스터의 구동 상태를 설정하는 유지 커패시터를 포함하는 화소 회로를 구비한 전기 광학 장치의 구동 방법으로서,(a) 상기 유지 커패시터에 전압 신호를 공급함으로써, 상기 유지 커패시터에 전하를 공급하는 스텝과,(b) 적어도 상기 전압 신호에 의한 전하의 공급이 완료된 후의 기간에서, 상기 발광 소자의 발광의 계조에 따른 전류값을 갖는 전류 신호를 이용하여, 상기 유지 커패시터에 상기 발광 계조에 따른 전하를 유지시키는 스텝을 구비하는 것을 특징으로 하는 전기 광학 장치의 구동 방법.
- 제 10 항에 있어서.상기 유지 커패시터로의 상기 전류 신호에 의한 전하의 공급은, 상기 전압 신호에 의한 전하의 공급이 완료된 후에 개시되는 전기 광학 장치의 구동 방법.
- 전류 구동형 발광 소자와, 상기 발광 소자에 흐르는 전류의 경로에 설치된 구동 트랜지스터와, 상기 구동 트랜지스터의 제어 전극에 접속되어 상기 구동 트랜지스터의 구동 상태를 설정하는 유지 커패시터를 포함하는 화소 회로와, 상기 화소회로에 접속된 데이터선을 구비한 전기 광학 장치의 구동 방법으로서,(a) 상기 데이터선을 통하여 상기 유지 커패시터에 전압 신호를 공급함으로써, 상기 유지 커패시터와 상기 데이터선의 쌍방을 충전 또는 방전시키는 스텝과,(b) 적어도 상기 전압 신호의 공급이 완료된 후의 기간에서, 상기 발광 소자의 발광 계조에 따른 전류값을 갖는 전류 신호를 이용하여, 상기 유지 커패시터에 상기 발광 계조에 따른 전하를 유지시키는 스텝을 구비하는 것을 특징으로 하는 전기 광학 장치의 구동 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JPJP-P-2001-00379714 | 2001-12-13 | ||
JP2001379714A JP2003177709A (ja) | 2001-12-13 | 2001-12-13 | 発光素子用の画素回路 |
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KR20030048358A KR20030048358A (ko) | 2003-06-19 |
KR100455467B1 true KR100455467B1 (ko) | 2004-11-06 |
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KR10-2002-0079093A KR100455467B1 (ko) | 2001-12-13 | 2002-12-12 | 발광 소자용 화소 회로 |
Country Status (7)
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US (2) | US6930680B2 (ko) |
EP (3) | EP1921596A3 (ko) |
JP (1) | JP2003177709A (ko) |
KR (1) | KR100455467B1 (ko) |
CN (3) | CN1758313A (ko) |
DE (1) | DE60228392D1 (ko) |
TW (1) | TW575858B (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101493220B1 (ko) | 2008-05-26 | 2015-02-17 | 엘지디스플레이 주식회사 | 유기발광표시장치 |
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Also Published As
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CN1266662C (zh) | 2006-07-26 |
DE60228392D1 (de) | 2008-10-02 |
KR20030048358A (ko) | 2003-06-19 |
EP1321922B1 (en) | 2008-08-20 |
TW200300922A (en) | 2003-06-16 |
EP1921596A2 (en) | 2008-05-14 |
JP2003177709A (ja) | 2003-06-27 |
EP1321922A2 (en) | 2003-06-25 |
CN1426041A (zh) | 2003-06-25 |
US20030122745A1 (en) | 2003-07-03 |
EP1321922A3 (en) | 2004-08-11 |
EP1777692B1 (en) | 2014-06-18 |
US20050243040A1 (en) | 2005-11-03 |
TW575858B (en) | 2004-02-11 |
US6930680B2 (en) | 2005-08-16 |
EP1777692A3 (en) | 2008-03-26 |
CN1758313A (zh) | 2006-04-12 |
CN1901016A (zh) | 2007-01-24 |
EP1777692A2 (en) | 2007-04-25 |
US7969389B2 (en) | 2011-06-28 |
EP1921596A3 (en) | 2008-08-13 |
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