JP2006126779A - 画素回路、画素駆動方法及び電子機器 - Google Patents
画素回路、画素駆動方法及び電子機器 Download PDFInfo
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- 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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- 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
- G09G3/3241—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 the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror
- G09G3/325—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 the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror the data current flowing through the driving transistor during a setting phase, e.g. by using a switch for connecting the driving transistor to the data driver
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- 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
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- 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
- G09G2310/0259—Details of the generation of driving signals with use of an analog or digital ramp generator in the column driver or in the pixel circuit
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- G09G2310/066—Waveforms comprising a gently increasing or decreasing portion, e.g. ramp
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- G—PHYSICS
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- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
【解決手段】
本発明の画素回路は、電気光学素子OLEDを発光させる画素回路20において、電気光学素子の駆動電流路に挿入されるトランジスタTETCと、駆動電流路の電流値を設定する電流値設定回路21と、供給される画素信号のレベルを記憶するレベル保持手段CSDと、記憶された画素信号レベルと供給される傾斜レベル信号VREFとを比較し、比較結果に基づいてトランジスタTETCの動作を制御する比較回路23と、を備える。
【選択図】 図2
Description
この実施例においては、発光時間制御トランジスタ(TFT)を画素回路の電気光学素子の電流路に設ける。発光時間制御トランジスタのゲート・ドレイン間を短絡し、閾値を記憶すると同時に発光時間に相当するアナログ信号を各画素回路に記憶する。参照電位(スイープ信号)を全画素回路に一斉に供給し、アナログ信号と参照電位の大小関係によって発光時間制御トランジスタのオンオフ動作が制御され、各画素回路の電気光学素子の発光時間が制御される。
図16(A)は携帯電話への適用例であり、当該携帯電話230はアンテナ部231、音声出力部232、音声入力部233、操作部234、および本発明の電気光学装置200を備えている。このように本発明に係る電気光学装置は表示部として利用可能である。
Claims (9)
- 電気光学素子を発光させる画素回路であって、
前記電気光学素子の駆動電流路に挿入されるトランジスタと、
前記駆動電流路の電流値を設定する電流値設定回路と
供給される画素信号のレベルを記憶するレベル保持手段と、
記憶された画素信号レベルと供給される傾斜レベル信号とを比較し、比較結果に基づいて前記トランジスタの動作を制御する比較回路と、
を備える画素回路。 - 電気光学素子を発光させる画素回路であって、
前記電気光学素子の駆動電流路に挿入されるトランジスタと、
前記駆動電流路の電流値を設定する電流値設定回路と、
時間軸上において先行する一連の画素信号からなる画素列信号部分と、これに後続する傾斜レベル信号部分とを含む複合信号から、1つの画素信号を抽出してそのレベルと後続の傾斜レベル信号とをレベル比較し、比較結果に基づいて前記トランジスタの動作時間を制御する比較回路と、
を備える画素回路。 - 前記電流値設定回路は、前記駆動電流路に挿入される駆動トランジスタと、前記駆動トランジスタに所定値の電流を供給する電流供給源と、前記駆動トランジスタに前記所定値の電流を供給したときの該駆動トランジスタのゲート電圧を保持するキャパシタと、を含む請求項1又は2に記載の画素回路。
- 前記電気光学素子は有機EL発光素子である、請求項1乃至3のいずれかに記載の画素回路。
- 請求項1乃至4のいずれかに記載の画素回路を画像表示器に含む電子機器。
- 基板上に二次元に配置された複数の画素を発光させる画素駆動方法であって、
予め各画素に供給する電流レベルを設定する過程と、
各画素が表示すべき画素信号を各画素の領域に記憶する過程と、
供給される傾斜レベル信号と各画素の画素信号のレベルとを比較して前記電流レベルによる各画素の発光時間を制御する過程と、
を含む画素駆動方法。 - 画素を発光させる画素駆動方法であって、
予め画素に供給する電流レベルを設定する過程と、
前記画素が表示すべき画素信号を記憶する過程と、
供給される傾斜レベル信号と前記画素の画素信号とを比較して前記電流レベルによる前記画素の発光時間を制御する過程と、
を含む画素駆動方法。 - 基板上に二次元に配置された複数の電気光学素子を発光させる画素駆動方法であって、
予め各電気光学素子に供給する電流レベルを設定する過程と、
時間軸上において先行する一連の画素信号からなる画素列信号部分とこれに後続する傾斜レベル信号部分とを含む複合信号から各電気光学素子の配置領域に対応する画素信号を選択してそのレベルを記憶する過程と、
各電気光学素子の配置領域にそれぞれ対応付けられた各画素信号のレベルと供給される傾斜レベル信号とを比較して前記電流レベルによる各電気光学素子の発光時間を制御する過程と、
を含む画素駆動方法。 - 電気光学素子を発光させる画素駆動方法であって、
予め前記電気光学素子に供給する電流レベルを設定する過程と、
時間軸上において先行する一連の画素信号からなる画素列信号部分と、これに後続する傾斜レベル信号部分とを含む複合信号から、1つの画素信号を抽出してそのレベルを記憶する過程と、
記憶された前記画素信号のレベルと前記傾斜レベル信号とをレベル比較して設定された前記電流レベルによる前記電気光学素子の発光時間を制御する過程と、
を含む画素駆動方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005166024A JP4501785B2 (ja) | 2004-09-30 | 2005-06-06 | 画素回路及び電子機器 |
US11/187,888 US7924246B2 (en) | 2004-09-30 | 2005-07-25 | Pixel circuit, method of driving pixel, and electronic apparatus |
KR1020050068701A KR100704259B1 (ko) | 2004-09-30 | 2005-07-28 | 화소 회로, 화소 구동 방법 및 전자 기기 |
TW094130571A TW200614118A (en) | 2004-09-30 | 2005-09-06 | Pixel circuit, method of driving pixel, and electronic apparatus |
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JP2004288030 | 2004-09-30 | ||
JP2004288039 | 2004-09-30 | ||
JP2005166024A JP4501785B2 (ja) | 2004-09-30 | 2005-06-06 | 画素回路及び電子機器 |
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JP2006126779A true JP2006126779A (ja) | 2006-05-18 |
JP4501785B2 JP4501785B2 (ja) | 2010-07-14 |
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JP2005166024A Expired - Fee Related JP4501785B2 (ja) | 2004-09-30 | 2005-06-06 | 画素回路及び電子機器 |
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US (1) | US7924246B2 (ja) |
JP (1) | JP4501785B2 (ja) |
KR (1) | KR100704259B1 (ja) |
TW (1) | TW200614118A (ja) |
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JP2008304490A (ja) * | 2007-06-05 | 2008-12-18 | Sony Corp | 表示パネル駆動方法、表示装置、表示パネル駆動装置及び電子機器 |
JP2008304492A (ja) * | 2007-06-05 | 2008-12-18 | Sony Corp | 表示パネル駆動方法、表示装置、表示パネル駆動装置及び電子機器 |
US8674910B2 (en) | 2007-06-05 | 2014-03-18 | Sony Corporation | Display panel driving method, display apparatus, display panel driving apparatus and electronic apparatus |
JP2014202778A (ja) * | 2013-04-01 | 2014-10-27 | ソニー株式会社 | 表示装置 |
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JP2023512363A (ja) * | 2019-11-29 | 2023-03-27 | 京東方科技集團股▲ふん▼有限公司 | 画素駆動回路、その駆動方法及び表示装置 |
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Also Published As
Publication number | Publication date |
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KR100704259B1 (ko) | 2007-04-06 |
JP4501785B2 (ja) | 2010-07-14 |
KR20060048834A (ko) | 2006-05-18 |
US20060066528A1 (en) | 2006-03-30 |
TW200614118A (en) | 2006-05-01 |
US7924246B2 (en) | 2011-04-12 |
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