KR20080090382A - 일렉트로 루미넌스 소자의 휘도 저하를 보상하는 기술 - Google Patents
일렉트로 루미넌스 소자의 휘도 저하를 보상하는 기술 Download PDFInfo
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- KR20080090382A KR20080090382A KR1020087008825A KR20087008825A KR20080090382A KR 20080090382 A KR20080090382 A KR 20080090382A KR 1020087008825 A KR1020087008825 A KR 1020087008825A KR 20087008825 A KR20087008825 A KR 20087008825A KR 20080090382 A KR20080090382 A KR 20080090382A
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- 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
- G09G3/3258—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 voltage across the light-emitting element
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
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- 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
- G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
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- 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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- 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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- 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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Abstract
Description
Claims (30)
- 화소 회로(pixel circuit)로서,발광 소자,제1 단자 및 제2 단자를 갖는 저장 캐패시터,게이트 단자, 제1 단자 및 제2 단자를 갖는 제1 트랜지스터 - 상기 게이트 단자는 제1 선택선에 연결됨 - ;게이트 단자, 제1 단자 및 제2 단자를 갖는 제2 트랜지스터 - 상기 제1 단자는 상기 제1 트랜지스터의 상기 제2 단자에 연결되고, 상기 제2 단자는 상기 발광 소자에 연결됨 - ;게이트 단자, 제1 단자 및 제2 단자를 갖는 제3 트랜지스터 - 상기 게이트 단자는 제2 선택선에 연결되고, 상기 제1 단자는 상기 제1 트랜지스터의 상기 제2 단자에 연결되며, 상기 제2 단자는 상기 제2 트랜지스터의 상기 게이트 단자와 상기 저장 캐패시터의 상기 제1 단자에 연결됨 - ;게이트 단자, 제1 단자 및 제2 단자를 갖는 제4 트랜지스터 - 상기 게이트 단자는 제3 선택선에 연결되고, 상기 제1 단자는 상기 저장 캐패시터의 상기 제2 단자에 연결되며, 상기 제2 단자는 상기 제2 트랜지스터의 상기 제2 단자와 상기 발광 소자에 연결됨 - ; 및게이트 단자, 제1 단자 및 제2 단자를 갖는 제5 트랜지스터 - 상기 게이트 단자는 상기 제2 선택선에 연결되고, 상기 제1 단자는 신호선에 연결되며, 상기 제 2 단자는 상기 제4 트랜지스터의 상기 제1 단자와 상기 저장 캐패시터의 상기 제2 단자에 연결됨 -를 포함하는 화소 회로.
- 제1항에 있어서,상기 제1 선택선, 상기 제2 선택선 및 상기 제3 선택선이 구동되어 프로그래밍 사이클(programming cycle) 및 구동 사이클(driving cycle)을 형성하고, 상기 프로그래밍 사이클은 프리차지 사이클(pre-charge cycle) 및 보상 사이클(compensation cycle)을 포함하는 화소 회로.
- 제2항에 있어서,상기 저장 캐패시터는 상기 프리차지 사이클 동안 충전되고, 상기 보상 사이클 동안 방전되며, 상기 저장 캐패시터의 상기 제2 단자는 상기 구동 사이클 동안 상기 신호선으로부터 차단되고 상기 제2 트랜지스터의 상기 제2 단자와 연결되는 화소 회로.
- 제3항에 있어서,상기 제1 선택선, 상기 제2 선택선 및 상기 신호선이 구동되어, 상기 보상 사이클 동안 상기 저장 캐패시터가 상기 제2 트랜지스터의 문턱 전압, 상기 발광 소자와 관련된 전압 및 프로그래밍 전압에 따라 전압을 저장하도록 하는 화소 회 로.
- 제1항에 있어서,상기 제3 선택선은 상기 제1 선택선인 화소 회로.
- 제5항에 있어서,상기 제1 선택선 및 상기 제2 선택선이 구동되어 프로그래밍 사이클 및 구동 사이클을 형성하고, 상기 프로그래밍 사이클은 프리차지 사이클 및 보상 사이클을 포함하는 화소 회로.
- 제6항에 있어서,상기 저장 캐패시터는 상기 프리차지 사이클 동안 충전되고, 상기 보상 사이클 동안 방전되며, 상기 저장 캐패시터의 상기 제2 단자는 상기 구동 사이클 동안 상기 신호선으로부터 차단되고 상기 제2 트랜지스터의 상기 제2 단자와 연결되는 화소 회로.
- 제7항에 있어서,상기 제1 선택선, 상기 제2 선택선 및 상기 신호선이 구동되어, 상기 보상 사이클 동안 상기 저장 캐패시터가 상기 제2 트랜지스터의 문턱 전압, 상기 발광 소자와 관련된 전압 및 프로그래밍 전압에 따라 전압을 저장하도록 하는 화소 회 로.
- 제5항에 있어서,게이트 단자, 제1 단자 및 제2 단자를 갖는 제6 트랜지스터 - 상기 게이트 단자는 상기 제2 선택선에 연결되고, 상기 제1 단자는 상기 제2 트랜지스터의 상기 제1 단자에 연결되며, 상기 제2 단자는 바이어스 전류선(bias current line)에 연결됨 - 를 더 포함하는 화소 회로.
- 제9항에 있어서,상기 제1 선택선 및 상기 제2 선택선이 구동되어 제1 동작 사이클 및 제2 동작 사이클을 형성하는 화소 회로.
- 제10항에 있어서,상기 저장 캐패시터는 상기 제1 동작 사이클 동안 상기 신호선 및 상기 바이어스 전류선과 연결되고, 상기 제2 동작 사이클 동안 상기 저장 캐패시터는 상기 신호선 및 상기 바이어스 전류선으로부터 차단되고 상기 저장 캐패시터의 상기 제2 단자는 상기 제2 트랜지스터의 상기 제2 단자와 연결되는 화소 회로.
- 제11항에 있어서,상기 제1 선택선, 상기 제2 선택선, 상기 바이어스 전류선 및 상기 신호선이 구동되어, 상기 저장 캐패시터가 상기 제2 트랜지스터의 문턱 전압, 상기 발광 소자와 관련된 전압 및 프로그래밍 전압에 따라 전압을 저장하도록 하는 화소 회로.
- 제1항 내지 제12항 중 어느 한 항에 있어서,상기 발광 소자는 유기 발광 다이오드인 화소 회로.
- 제1항 내지 제12항 중 어느 한 항에 있어서,상기 화소 회로는 일렉트로-루미넌스 소자 표시 장치(electro-luminance device display)를 형성하는 화소 회로.
- 제14항에 있어서,상기 화소 회로는 능동 행렬 발광 표시 장치(active matrix light emitting display)를 형성하는 화소 회로.
- 제15항에 있어서,상기 표시 장치는 능동 행렬 유기 발광 표시 장치인 화소 회로.
- 제1항 내지 제12항 중 어느 한 항에 있어서,상기 트랜지스터들 중 적어도 하나는 비정질, 나노/마이크로 결정, 다결정, 유기 재질, n형 재질, p형 재질 또는 CMOS 실리콘을 포함하는 화소 회로.
- 제1항 내지 제12항 중 어느 한 항에 있어서,상기 트랜지스터들 중 적어도 하나는 n형 또는 p형 TFT인 화소 회로.
- 표시 시스템(display system)으로서,제1항의 상기 화소 회로에 의해 형성되는 표시 어레이(display array); 및상기 제1 선택선, 상기 제2 선택선, 상기 제3 선택선 및 상기 신호선을 구동하여, 프로그래밍 사이클 및 구동 사이클을 형성하는 구동 모듈을 포함하고,상기 프로그래밍 사이클은 프리차지 사이클 및 보상 사이클을 포함하며,상기 저장 캐패시터는 상기 프리차지 사이클 동안 충전되고 상기 보상 사이클 동안 방전되며, 상기 저장 캐패시터의 상기 제2 단자는 상기 구동 사이클 동안 상기 신호선으로부터 차단되고 상기 제2 트랜지스터의 상기 제2 단자와 연결되는 표시 시스템.
- 표시 시스템으로서,제6항의 상기 화소 회로에 의해 형성되는 표시 어레이; 및상기 제1 선택선, 상기 제2 선택선 및 상기 신호선을 구동하여, 프로그래밍 사이클 및 구동 사이클을 형성하는 구동 모듈을 포함하고,상기 프로그래밍 사이클은 프리차지 사이클 및 보상 사이클을 포함하며,상기 저장 캐패시터는 상기 프리차지 사이클 동안 충전되고, 상기 보상 사이클 동안 방전되며, 상기 저장 캐패시터의 상기 제2 단자는 상기 구동 사이클 동안 상기 신호선으로부터 차단되고 상기 제2 트랜지스터의 상기 제2 단자와 연결되는 표시 시스템.
- 표시 시스템으로서,제9항의 상기 화소 회로에 의해 형성되는 표시 어레이; 및상기 제1 선택선, 상기 제2 선택선, 상기 신호선 및 상기 바이어스 전류선을 구동하여, 제1 동작 사이클 및 제2 동작 사이클을 형성하는 구동 모듈을 포함하고,상기 저장 캐패시터는 상기 제1 동작 사이클 동안 상기 신호선 및 상기 바이어스 전류선과 연결되고, 상기 저장 캐패시터는 상기 제2 동작 사이클 동안 상기 신호선 및 상기 바이어스 전류선으로부터 차단되고 상기 제2 트랜지스터와 연결되는 표시 시스템.
- 제19항에 있어서,상기 구동 모듈은 상기 프리차지 사이클 및 상기 보상 사이클을 동작시켜, 상기 표시 어레이의 행에서는 상기 프리차지 사이클이, 상기 표시 어레이의 인접 행에서는 상기 보상 사이클이 병렬로 수행되도록 하는 표시 시스템.
- 제20항에 있어서,상기 구동 모듈은 상기 프리차지 사이클 및 상기 보상 사이클을 동작시켜, 상기 표시 어레이의 행에서는 상기 프리차지 사이클이, 상기 표시 어레이의 인접 행에서는 상기 보상 사이클이 병렬로 수행되도록 하는 표시 시스템.
- 제21항에 있어서,상기 구동 모듈은 상기 제1 동작 사이클 및 상기 제2 동작 사이클을 동작시켜, 상기 표시 어레이의 행들에서 상기 제1 동작 사이클을 후속하여 수행하고, 상기 제1 동작 사이클 다음에 상기 제2 동작 사이클을 수행하는 표시 시스템.
- 제1항의 상기 발광 소자의 열화를 보상하는 방법으로서,상기 저장 캐패시터를 상기 신호선에 연결시키는 것을 포함하여 상기 저장 캐패시터를 충전시키는 단계,상기 저장 캐패시터를 방전시키는 단계; 및상기 저장 캐패시터를 상기 신호선으로부터 차단시키고, 상기 저장 캐패시터의 상기 제2 단자를 상기 제2 트랜지스터의 상기 제2 단자와 연결시키는 단계를 포함하는 열화 보상 방법.
- 제25항에 있어서,상기 제2 트랜지스터의 문턱 전압, 상기 발광 소자와 관련된 전압 및 프로그래밍 전압에 따라 전압이 상기 저장 캐패시터에 저장되어 상기 화소 회로를 구동하는 열화 보상 방법.
- 제1항의 상기 화소 회로에서 상기 트랜지스터의 문턱 전압의 변화를 보상하는 방법으로서,상기 저장 캐패시터를 상기 신호선에 연결시키는 것을 포함하여 상기 저장 캐패시터를 충전시키는 단계,상기 저장 캐패시터를 방전시키는 단계; 및상기 저장 캐패시터를 상기 신호선으로부터 차단시키고, 상기 저장 캐패시터의 상기 제2 단자를 상기 제2 트랜지스터의 상기 제2 단자와 연결시키는 단계를 포함하는 문턱 전압 변화 보상 방법.
- 제27항에 있어서,상기 제2 트랜지스터의 문턱 전압, 상기 발광 소자와 관련된 전압 및 프로그래밍 전압에 따라 전압이 상기 저장 캐패시터에 저장되어 상기 화소 회로를 구동하는 문턱 전압 변화 보상 방법.
- 제1항의 상기 화소 회로의 그라운드 바운싱(ground bouncing) 또는 IR 강하(drop)를 보상하는 방법으로서,상기 저장 캐패시터를 상기 신호선 및 상기 바이어스 전류선에 연결시키는 것을 포함하여 상기 저장 캐패시터를 충전시키는 단계,상기 저장 캐패시터를 방전시키는 단계; 및상기 저장 캐패시터를 상기 신호선 및 상기 바이어스 신호선으로부터 차단시키고, 상기 저장 캐패시터의 상기 제2 단자를 상기 제2 트랜지스터의 상기 제2 단자와 연결시키는 단계를 포함하는 화소 회로 보상 방법.
- 제29항에 있어서,상기 제2 트랜지스터의 문턱 전압, 상기 발광 소자와 관련된 전압 및 프로그래밍 전압에 따라 전압이 상기 저장 캐패시터에 저장되어 상기 화소 회로를 구동하는 화소 회로 보상 방법.
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| KR (1) | KR20080090382A (ko) |
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2005
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- 2006-09-13 KR KR1020087008825A patent/KR20080090382A/ko not_active Withdrawn
- 2006-09-13 CA CA002557713A patent/CA2557713C/en not_active Expired - Fee Related
- 2006-09-13 WO PCT/CA2006/001501 patent/WO2007030927A1/en not_active Ceased
- 2006-09-13 CN CN2006800421409A patent/CN101305409B/zh not_active Expired - Fee Related
- 2006-09-13 EP EP06790675A patent/EP1932135B1/en not_active Not-in-force
- 2006-09-13 TW TW095133941A patent/TW200717387A/zh unknown
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2010
- 2010-12-10 US US12/965,610 patent/US8749595B2/en active Active
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015088152A1 (ko) * | 2013-12-10 | 2015-06-18 | 네오뷰코오롱 주식회사 | 유기발광 표시장치의 휘도 편차 보상장치 및 보상방법 |
| KR20170015750A (ko) * | 2015-07-31 | 2017-02-09 | 삼성디스플레이 주식회사 | 화소 및 이를 포함하는 유기발광 표시장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE488001T1 (de) | 2010-11-15 |
| DE602006018165D1 (de) | 2010-12-23 |
| US8188946B2 (en) | 2012-05-29 |
| US10019941B2 (en) | 2018-07-10 |
| US8749595B2 (en) | 2014-06-10 |
| JP2009508168A (ja) | 2009-02-26 |
| EP1932135B1 (en) | 2010-11-10 |
| CN101305409A (zh) | 2008-11-12 |
| CN101305409B (zh) | 2010-12-15 |
| CA2557713A1 (en) | 2006-11-26 |
| CA2518276A1 (en) | 2007-03-13 |
| EP1932135A1 (en) | 2008-06-18 |
| US20110141160A1 (en) | 2011-06-16 |
| TW200717387A (en) | 2007-05-01 |
| EP1932135A4 (en) | 2008-11-26 |
| US20070063932A1 (en) | 2007-03-22 |
| US20140232623A1 (en) | 2014-08-21 |
| CA2557713C (en) | 2008-12-02 |
| WO2007030927A1 (en) | 2007-03-22 |
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