KR100918986B1 - 발광장치 및 이를 사용한 전자기기 - Google Patents
발광장치 및 이를 사용한 전자기기 Download PDFInfo
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- KR100918986B1 KR100918986B1 KR1020020058700A KR20020058700A KR100918986B1 KR 100918986 B1 KR100918986 B1 KR 100918986B1 KR 1020020058700 A KR1020020058700 A KR 1020020058700A KR 20020058700 A KR20020058700 A KR 20020058700A KR 100918986 B1 KR100918986 B1 KR 100918986B1
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- 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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- 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]
- G09G3/3275—Details of drivers for data electrodes
- G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
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- 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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- 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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- 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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- 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
- G09G2310/0264—Details of driving circuits
- G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
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- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- 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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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
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- G09G2320/043—Preventing or counteracting the effects of ageing
- G09G2320/048—Preventing or counteracting the effects of ageing using evaluation of the usage time
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- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
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Abstract
Description
Claims (65)
- 복수의 발광소자와,상기 복수의 발광소자에 전압을 공급하는 전압원과,상기 복수의 발광소자의 발광기간을 제어하는 영상신호에 의거하여, 상기 복수의 각 발광소자의 발광기간의 누적을 산출하는 수단과,상기 복수의 각 발광소자의 발광기간의 상기 산출된 누적을 저장하는 수단과,상기 복수의 발광소자의 휘도 특성의 경시변화의 데이터를 저장하는 수단과,상기 복수의 발광소자의 휘도 특성의 경시변화의 데이터와, 상기 복수의 발광소자의 발광기간의 상기 산출된 누적에 의거하여 상기 복수의 각 발광소자의 초기 휘도와 비교해 휘도 변화량을 결정하는 수단과,상기 복수의 발광소자 중의 하나의 발광소자의 휘도를 초기 휘도로 복귀시키도록 상기 전압원으로부터 상기 복수의 발광소자에 공급된 전압을 보정하는 수단과,상기 복수의 발광소자 중의 하나의 발광소자의 초기 휘도와 비교한 휘도 변화량과, 상기 복수의 발광소자 중의 하나의 발광소자 이외의 발광소자 각각의 초기 휘도와 비교한 휘도 변화량과의 사이의 차이를 보상하도록 상기 영상신호를 보정하는 수단을 포함하며,상기 복수의 각 발광소자의 계조수는 상기 영상신호의 보정에 의해 보정되고,상기 전압원의 보정된 전압은 상기 복수의 발광소자에 공통인 것을 특징으로 하는 발광장치.
- 제 1 항에 있어서,상기 영상신호의 각각은 n + m 비트(n 및 m은 정수)를 갖고, 상기 m비트는 상기 영상신호를 보정하기 위해서만 사용된 여분의 비트인 것을 특징으로 하는 발광장치.
- 제 1 항에 있어서,상기 복수의 발광소자의 발광기간 및 계조수를 제어하는 상기 영상신호를 샘플링하는 샘플링회로를 더 구비한 것을 특징으로 하는 발광장치.
- 복수의 발광소자와,상기 복수의 발광소자에 전압을 공급하는 전압원과,상기 복수의 발광소자의 발광기간을 제어하는 영상신호에 의거하여, 상기 복수의 각 발광소자의 계조수의 누적을 산출하는 수단과,상기 복수의 각 발광소자의 계조수의 상기 산출된 누적을 저장하는 수단과,상기 복수의 발광소자의 휘도 특성의 경시변화의 데이터를 저장하는 수단과,상기 복수의 발광소자의 휘도 특성의 경시변화의 데이터와, 상기 복수의 발광소자의 계조수의 상기 산출된 누적에 의거하여 상기 복수의 각 발광소자의 초기 휘도와 비교해 휘도 변화량을 결정하는 수단과,상기 복수의 발광소자 중의 하나의 발광소자의 휘도를 초기 휘도로 복귀시키도록 상기 전압원으로부터 상기 복수의 발광소자에 공급된 전압을 보정하는 수단과,상기 복수의 발광소자 중의 하나의 발광소자의 초기 휘도와 비교한 휘도 변화량과, 상기 복수의 발광소자 중의 하나의 발광소자 이외의 발광소자의 각각의 초기 휘도와 비교한 휘도 변화량과의 사이의 차이를 보상하도록 상기 영상신호를 보정하는 수단을 포함하며,상기 계조수는 상기 영상신호의 보정에 의해 보정되고,상기 전압원의 보정된 전압은 상기 복수의 발광소자에 공통인 것을 특징으로 하는 발광장치.
- 삭제
- 제 4 항에 있어서,상기 영상신호의 각각은 n + m 비트(n 및 m은 정수)를 갖고, 상기 m비트는 상기 영상신호를 보정하기 위해서만 사용된 여분의 비트인 것을 특징으로 하는 발광장치.
- 복수의 발광소자와,상기 복수의 발광소자에 전압을 공급하는 전압원과,상기 복수의 발광소자의 발광기간을 제어하는 영상신호에 의거하여 상기 복수의 발광소자의 각각의 발광기간의 누적을 산출하는 카운터부와,상기 복수의 발광소자의 각각의 발광기간의 상기 산출된 누적을 저장하는 제1 기억회로와,상기 복수의 발광소자의 휘도 특성의 경시변화의 데이터를 저장하는 제2 기억회로와,상기 복수의 발광소자의 상기 휘도 특성의 경시변화의 데이터와, 상기 복수의 발광소자의 발광기간의 상기 산출된 누적에 의거하여 상기 복수의 발광소자의 각각의 초기 휘도와 비교해 휘도 변화량을 결정하는 산술회로와,상기 복수의 발광소자 중의 하나의 발광소자의 휘도를 초기 휘도로 복귀시키도록 상기 전압원으로부터 상기 복수의 발광소자에 공급된 전압을 보정하는 전압보정회로와,상기 복수의 발광소자 중의 하나의 발광소자의 초기 휘도와 비교한 휘도 변화량과, 상기 복수의 발광소자 중의 하나의 발광소자 이외의 발광소자의 각각의 초기 휘도와 비교한 휘도 변화량과의 사이의 차이를 보상하도록 상기 영상신호를 보정하는 영상신호 보정회로를 포함하며,상기 복수의 발광소자의 각각의 계조수는 상기 영상신호의 보정에 의해 보정되고,상기 전압원의 보정된 전압은 상기 복수의 발광소자에 공통인 것을 특징으로 하는 표시장치.
- 제 7 항에 있어서,상기 영상신호의 각각은 n + m 비트(n 및 m은 정수)를 갖고, 상기 m비트는 상기 영상신호를 보정하기 위해서만 사용된 여분의 비트인 것을 특징으로 하는 표시장치.
- 복수의 발광소자와,상기 복수의 발광소자에 전압을 공급하는 전압원과,상기 복수의 발광소자의 발광기간을 제어하는 영상신호에 의거하여 상기 복수의 발광소자의 각각의 계조수의 누적을 산출하는 카운터부와,상기 복수의 발광소자의 각각의 계조수의 상기 산출된 누적을 저장하는 제1 기억회로와,상기 복수의 발광소자의 휘도 특성의 경시변화의 데이터를 저장하는 제2 기억회로와,상기 복수의 발광소자의 상기 휘도 특성의 경시변화의 데이터와, 상기 복수의 발광소자의 계조수의 상기 산출된 누적에 의거하여 상기 복수의 발광소자의 각각의 초기 휘도와 비교해 휘도 변화량을 결정하는 산술회로와,상기 복수의 발광소자 중의 하나의 발광소자의 휘도를 초기 휘도로 복귀시키도록 상기 전압원으로부터 상기 복수의 발광소자에 공급된 전압을 보정하는 전압보정회로와,상기 복수의 발광소자 중의 하나의 발광소자의 초기 휘도와 비교한 휘도 변화량과, 상기 복수의 발광소자 중의 하나의 발광소자 이외의 발광소자의 각각의 초기 휘도와 비교한 휘도 변화량과의 사이의 차이를 보상하도록 상기 영상신호를 보상하는 영상신호 보정회로를 포함하며,상기 계조수는 상기 영상신호의 보정에 의해 보정되고,상기 전압원의 보정된 전압은 상기 복수의 발광소자에 공통인 것을 특징으로 하는 표시장치.
- 제 9항에 있어서,상기 영상신호의 각각은 n + m 비트(n 및 m은 정수)를 갖고, 상기 m비트는 상기 영상신호를 보정하기 위해서만 사용된 여분의 비트인 것을 특징으로 하는 표시장치.
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- 제 4 항에 있어서,상기 복수의 발광소자의 발광기간 및 계조수를 제어하는 상기 영상신호를 샘플링하는 샘플링 회로를 더 구비한 것을 특징으로 하는 발광장치.
- 제 7 항에 있어서,상기 복수의 발광소자의 발광기간 및 계조수를 제어하는 상기 영상신호를 샘플링하는 샘플링 회로를 더 구비한 것을 특징으로 하는 표시장치.
- 제 9 항에 있어서,상기 복수의 발광소자의 발광기간 및 계조수를 제어하는 상기 영상신호를 샘플링하는 샘플링 회로를 더 구비한 것을 특징으로 하는 표시장치.
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EP1310938A3 (en) | 2010-10-06 |
EP1310938A2 (en) | 2003-05-14 |
SG120888A1 (en) | 2006-04-26 |
TW546596B (en) | 2003-08-11 |
KR20030027788A (ko) | 2003-04-07 |
CN1409404A (zh) | 2003-04-09 |
US7158157B2 (en) | 2007-01-02 |
US20060103684A1 (en) | 2006-05-18 |
EP1310938B1 (en) | 2012-12-26 |
US7586505B2 (en) | 2009-09-08 |
CN100350444C (zh) | 2007-11-21 |
US20030071804A1 (en) | 2003-04-17 |
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