JP2011503645A - 制御回路を有するledディスプレイ - Google Patents
制御回路を有するledディスプレイ Download PDFInfo
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- JP2011503645A JP2011503645A JP2010532070A JP2010532070A JP2011503645A JP 2011503645 A JP2011503645 A JP 2011503645A JP 2010532070 A JP2010532070 A JP 2010532070A JP 2010532070 A JP2010532070 A JP 2010532070A JP 2011503645 A JP2011503645 A JP 2011503645A
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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
-
- 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
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
- G09G2300/0465—Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
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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
-
- 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
- G09G2310/06—Details of flat display driving waveforms
- G09G2310/066—Waveforms comprising a gently increasing or decreasing portion, e.g. ramp
-
- 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
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
-
- 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
- G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen
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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)
Abstract
Description
a)制御信号に応答してフレーム期間において蓄積回路に輝度値を蓄積する制御回路と;
b)蓄積回路に応答してLEDの電流を制御して輝度値により決定される輝度レベルで発光させる駆動回路と;
c)蓄積回路に接続されフレーム期間において蓄積回路に蓄積される輝度値の減少を制御する輝度値減少回路とを具備する、LED表示画素を制御するためのアクティブマトリクス回路に向けられている。
10 発光ダイオード
12 制御トランジスタ
14 選択信号
15 制御信号
16 データ信号
20 コンデンサ
22 駆動トランジスタ
24 抵抗
26 輝度値減少トランジスタ
28 減少制御トランジスタ
30 制御回路
32 蓄積回路
34 駆動回路
36 輝度値減少回路
38 減少制御回路
40 減少制御信号
42 インバータ
44 インバータトランジスタ
100 ディスプレイ
102 コントローラ
104 信号
106 信号
108 発光素子
200 輝度値蓄積ステップ
202 輝度値減少ステップ
Claims (20)
- a)制御信号に応答してフレーム期間において蓄積回路に輝度値を蓄積する制御回路と;
b)前記蓄積回路に応答してLEDの電流を制御して前記輝度値により決定される輝度レベルで発光させる駆動回路と;
c)前記蓄積回路に接続され前記フレーム期間において前記蓄積回路に蓄積される前記輝度値の減少を制御する輝度値減少回路とを具備する、LED表示画素を制御するためのアクティブマトリクス回路。 - 前記制御回路または駆動回路は基板上に形成されたトランジスタである請求項1記載のアクティブマトリクス回路。
- 前記蓄積回路は前記輝度値を表現する電荷を蓄積するコンデンサである請求項1記載のアクティブマトリクス回路。
- 前記輝度値減少回路は前記コンデンサに蓄積される前記電荷を時間とともに減少させる請求項3記載のアクティブマトリクス回路。
- 前記輝度値減少回路は前記コンデンサに並列に接続された抵抗である請求項4記載のアクティブマトリクス回路。
- 前記輝度値減少回路は前記コンデンサに並列に接続されたトランジスタであり制御信号に応答して前記コンデンサの前記電荷が時間とともに減少する速度を制御する請求項4記載のアクティブマトリクス回路。
- 前記輝度値減少回路に接続され減少制御信号に応答して輝度値減少回路が輝度値を減少させる速度を制御する減少制御回路をさらに具備する請求項1記載のアクティブマトリクス回路。
- 前記減少制御回路はトランジスタである請求項7記載のアクティブマトリクス回路。
- 前記蓄積回路は前記輝度値を表現する電荷を蓄積するコンデンサであり、前記輝度値減少回路は前記コンデンサに並列に接続された抵抗であり、前記減少制御トランジスタは前記抵抗に直列に接続されて前記減少制御信号に応答して前記抵抗に流れる電流を制御する請求項8記載のアクティブマトリクス回路。
- 前記制御信号は前記制御回路を制御する選択信号を含み、前記減少制御信号は前記選択信号の反転信号である請求項7記載のアクティブマトリクス回路。
- 前記減少制御回路はインバータである請求項10記載のアクティブマトリクス回路。
- 前記インバータはトランジスタである請求項11記載のアクティブマトリクス回路。
- 前記制御された減少は前記輝度値が前記蓄積回路に蓄積された後、実質的な遅延なく始まる請求項1記載のアクティブマトリクス回路。
- 前記輝度値は、前記輝度値が前記蓄積回路に蓄積された後前記フレーム期間よりも短い第1の期間において一定値に保たれ前記第1の期間の終わりに減少される請求項1記載のアクティブマトリクス回路。
- 前記輝度値は前記輝度値が前記蓄積回路に蓄積された後連続的に減少する請求項1記載のアクティブマトリクス回路。
- a)基板上に形成された複数の発光画素であって、各画素は電流に応答して発光する発光ダイオード(LED)と該LEDに電流を提供する画素駆動回路とを含む複数の発光画素を具備し、各画素駆動回路はさらに、
i)制御信号に応答して蓄積回路に輝度値を蓄積する制御回路と;
ii)前記蓄積回路に応答してLEDの電流を制御して前記輝度値により決定される輝度レベルで発光させる駆動回路と;
iii)前記蓄積回路に接続され前記蓄積回路に蓄積される前記輝度値を時間とともに減少させる輝度値減少回路とを具備する、表示装置。 - 前記LEDは有機発光ダイオードである請求項16記載の表示装置。
- 前記LEDは無機発光ダイオードである請求項16記載の表示装置。
- 前記無機LEDは多結晶半導体マトリクスにおける量子ドットである請求項16記載の表示装置。
- フレーム期間内で表示装置の輝度を減少させる方法であって、
a)LED画素制御信号を使用して輝度値を蓄積回路に蓄積してLEDの電流を制御して前記輝度値により決定される輝度レベルで発光させ;
b)前記蓄積回路に接続された輝度値減少回路を使用することによってフレーム期間内で前記輝度値の減少を制御して前記蓄積回路に蓄積される前記輝度値を減少させるステップを具備する方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/934,152 US8120555B2 (en) | 2007-11-02 | 2007-11-02 | LED display with control circuit |
US11/934,152 | 2007-11-02 | ||
PCT/US2008/012429 WO2009058393A2 (en) | 2007-11-02 | 2008-11-03 | Led display with control circuit |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2012265463A Division JP2013101351A (ja) | 2007-11-02 | 2012-12-04 | 制御回路を有するledディスプレイ |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2011503645A true JP2011503645A (ja) | 2011-01-27 |
JP2011503645A5 JP2011503645A5 (ja) | 2012-10-04 |
JP5351169B2 JP5351169B2 (ja) | 2013-11-27 |
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Application Number | Title | Priority Date | Filing Date |
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JP2010532070A Active JP5351169B2 (ja) | 2007-11-02 | 2008-11-03 | 制御回路を有するledディスプレイ |
JP2012265463A Pending JP2013101351A (ja) | 2007-11-02 | 2012-12-04 | 制御回路を有するledディスプレイ |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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JP2012265463A Pending JP2013101351A (ja) | 2007-11-02 | 2012-12-04 | 制御回路を有するledディスプレイ |
Country Status (6)
Country | Link |
---|---|
US (1) | US8120555B2 (ja) |
EP (1) | EP2215621A2 (ja) |
JP (2) | JP5351169B2 (ja) |
KR (1) | KR20100095552A (ja) |
CN (1) | CN101884061B (ja) |
WO (1) | WO2009058393A2 (ja) |
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US10891895B2 (en) | 2018-06-27 | 2021-01-12 | Sharp Kabushiki Kaisha | Light emitting device, display device, and LED display device |
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KR20100095552A (ko) | 2010-08-31 |
WO2009058393A2 (en) | 2009-05-07 |
WO2009058393A3 (en) | 2009-06-18 |
US8120555B2 (en) | 2012-02-21 |
EP2215621A2 (en) | 2010-08-11 |
CN101884061A (zh) | 2010-11-10 |
JP5351169B2 (ja) | 2013-11-27 |
US20090115703A1 (en) | 2009-05-07 |
JP2013101351A (ja) | 2013-05-23 |
CN101884061B (zh) | 2013-09-11 |
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