JP4944366B2 - 4色変換方法及びその装置とこれを用いた有機電界発光表示装置 - Google Patents
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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
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- 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]
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Description
印加される電流の量に対応する光を発光する有機電界発光素子と、電流の流れを制御して前記有機電界発光素子の発光を制御する駆動素子とを含む有機電界発光パネルと、
スキャン信号を前記有機電界発光パネルのスキャンラインに順次出力するスキャン駆動部と、
データ信号を前記有機電界発光パネルのデータラインに出力するデータ駆動部と、
外部から提供される初期RGB階調データを根拠として補正RGB階調データと補正W階調データに変換して前記データ駆動部に出力する4色変換部と、
を含むことを特徴とする有機電界発光表示装置を提供する。
前記4色変換部は、
前記初期RGB階調データに対してそれぞれガンマ変換するガンマ変換部と、
前記ガンマ変換されたRGB階調データにそれぞれ、1より大きい値に固定されているスケーリングファクターを乗算して再配置する再配置部と、
前記再配置されたRGB階調データのうち、最小値をホワイト成分として定義して抽出するホワイト抽出部と、
前記再配置されたRGB階調データから前記ホワイト成分を減算して新しいRGB階調データを確定して、前記ホワイト成分を新しいホワイトデータとして確定するデータ確定部と、
前記確定されたRGBW階調データに対してそれぞれ逆ガンマ変換して補正RGBW階調データを設定する逆ガンマ変換部と、
を含む。
11,16 ガンマ変換部
12 再配置部
13,17 ホワイト抽出部
14,18 データ確定部
15,19 逆ガンマ変換部
20 データ駆動部
30 スキャン駆動部
40 有機電界発光パネル
125 ゲート電極
130 ソース電極
135 ドレーン電極
145,245,345,445 ピクセル電極
150,250,350,450 隔壁
360,460 ホワイト有機発光層
16R,26R レッド有機発光層
16G,26G グリーン有機発光層
16B,26B ブルー有機発光層
170,370 金属電極
280,480 保護層
270,470 透明電極
Claims (12)
- (a)入力される初期RGB階調データに対してそれぞれガンマ変換する段階と、
(b−1)前記ガンマ変換された各RGB階調データに、1より大きい値に固定されているスケーリングファクターを乗算して再配置(remapping)する段階と、
(b−2)前記再配置された各RGB階調データを根拠としてホワイト成分を抽出する段階と、
(c)前記ガンマ変換された各RGB階調データと前記ホワイト成分とを考慮してRGBW階調データを確定する段階と、
(d)前記確定されたRGBW階調データに対してそれぞれ逆ガンマ変換して補正RGBW階調データを設定する段階と、
を含み、
前記段階(b−2)は、
表示装置が表示可能な最大の階調数に対応する階調番号である最高階調レベルが、前記再配置されたRGBの最小値より小さいか同一である場合には、前記最高階調レベルを前記ホワイト成分として定義して抽出し、
前記最高階調レベルが、前記再配置されたRGBの最小値より大きい場合には、前記再配置されたRGBの最小値を前記ホワイト成分に定義して抽出し、
輝度低下を防止することを特徴とする4色変換方法。 - 前記段階(c)は、前記再配置された各RGB階調データから前記抽出されたホワイト成分を減算して新しいRGB階調データを確定し、前記ホワイト成分を新しいW階調データに確定する段階を含むことを特徴とする請求項1記載の4色変換方法。
- 前記段階(b−2)は、前記ガンマ変換されたRGBそれぞれのデータのうち、最小値をホワイト成分に定義して抽出することを特徴とする請求項1記載の4色変換方法。
- 入力される初期RGB階調データに対してそれぞれガンマ変換するガンマ変換部と、
前記ガンマ変換されたRGB階調データにそれぞれ、1より大きい値に固定されているスケーリングファクターを乗算して再配置する再配置部と、
前記再配置されたRGB階調データのうち、最小値をホワイト成分として定義して抽出するホワイト抽出部と、
前記再配置されたRGB階調データから前記ホワイト成分を減算して新しいRGB階調データを確定して、前記ホワイト成分を新しいホワイトデータに確定するデータ確定部と、
前記確定されたRGBW階調データに対してそれぞれ逆ガンマ変換して補正RGBW階調データを設定する逆ガンマ変換部と、
を含み、
前記ホワイト抽出部は、
表示装置が表示可能な最大の階調数に対応する階調番号である最高階調レベルが前記再配置されたRGB階調データの最小値より小さいか同一である場合には、前記最高階調レベルを前記ホワイト成分として定義して抽出し、
前記最高階調レベルが前記再配置されたRGB階調データの最小値より大きい場合には、前記再配置されたRGB階調データの最小値を前記ホワイト成分として定義して抽出し、
輝度低下を防止することを特徴とする4色変換装置。 - 印加される電流の量に対応する光を発光する有機電界発光素子と、電流の流れを制御して前記有機電界発光素子の発光を制御する駆動素子とを含む有機電界発光パネルと、
スキャン信号を前記有機電界発光パネルのスキャンラインに順次出力するスキャン駆動部と、
データ信号を前記有機電界発光パネルのデータラインに出力するデータ駆動部と、
外部から提供される初期RGB階調データを根拠として補正RGB階調データと補正W階調データに変換して前記データ駆動部に出力する4色変換部と、
を含み、
前記4色変換部は、
前記初期RGB階調データに対してそれぞれガンマ変換するガンマ変換部と、
前記ガンマ変換されたRGB階調データにそれぞれ、1より大きい値に固定されているスケーリングファクターを乗算して再配置する再配置部と、
前記再配置されたRGB階調データのうち、最小値をホワイト成分として定義して抽出するホワイト抽出部と、
前記再配置されたRGB階調データから前記ホワイト成分を減算して新しいRGB階調データを確定して、前記ホワイト成分を新しいホワイトデータとして確定するデータ確定部と、
前記確定されたRGBW階調データに対してそれぞれ逆ガンマ変換して補正RGBW階調データを設定する逆ガンマ変換部と、
を含み、
前記ホワイト抽出部は、
表示装置が表示可能な最大の階調数に対応する階調番号である最高階調レベルが前記再配置されたRGB階調データの最小値より小さいか同一である場合には、前記最高階調レベルを前記ホワイト成分として定義して抽出し、
前記最高階調レベルが前記再配置されたRGB階調データの最小値より大きい場合には、前記再配置されたRGB階調データの最小値を前記ホワイト成分として定義して抽出することを特徴とする有機電界発光表示装置。 - 前記データ駆動部は、前記初期RGB階調データのビットより大きいビットのデータ処理が可能なデータ駆動ICを具備し、
前記データ駆動ICは、前記補正RGBW階調データのグレイスケールが拡張され入力されても処理が可能であり、前記補正RGBW階調データそれぞれの階調レベルが純色に近い場合にも、輝度低下を防止することを特徴とする請求項5記載の有機電界発光表示装置。 - 前記有機電界発光パネルは、
基板と、
ソース電極、ドレーン電極及びゲート電極をそれぞれ有し、前記基板上に形成された多数のスイッチング素子と、
前記ドレーン電極とそれぞれ連結され第1〜第4サブピクセルを定義する多数のピクセル電極と、
前記第1サブピクセルに対応してレッド光を発光するレッドサブピクセルと、
前記第2サブピクセルに対応してグリーン光を発光するグリーンサブピクセルと、
前記第3サブピクセルに対応してブルー光を発光するブルーサブピクセルと、
前記第4サブピクセルに対応してホワイト光を発光するホワイトサブピクセルと、
を含むことを特徴とする請求項5記載の有機電界発光表示装置。 - 前記ピクセル電極上に形成された金属電極を更に含み、
前記レッドサブピクセルは、前記ピクセル電極と前記金属電極との間に形成されてレッド光を発光するレッド有機発光層により定義され、前記グリーンサブピクセルは、前記ピクセル電極と前記金属電極との間に形成されてグリーン光を発光するグリーン有機発光層により定義され、前記ブルーサブピクセルは、前記ピクセル電極と前記金属電極との間に形成されてブルー光を発光するブルー有機発光層により定義され、前記ホワイトサブピクセルは、前記ピクセル電極と前記金属電極との間に形成されてホワイト光を発光するホワイト有機発光層により定義されることを特徴とする請求項7記載の有機電界発光表示装置。 - 前記ピクセル電極上に形成された透明電極と、
前記透明電極上に形成された保護層とを更に含み、
前記レッドサブピクセルは、前記ピクセル電極と透明電極との間に形成されてレッド光を発光するレッド有機発光層により定義され、前記グリーンサブピクセルは、前記ピクセル電極と透明電極との間に形成されてグリーン光を発光するグリーン有機発光層により定義され、前記ブルーサブピクセルは、前記ピクセル電極と透明電極との間に形成されてブルー光を発光するブルー有機発光層により定義され、前記ホワイトサブピクセルは、前記ピクセル電極と透明電極との間に形成されてホワイト光を発光するホワイト有機発光層により定義されることを特徴とする請求項7記載の有機電界発光表示装置。 - 前記ピクセル電極上に形成されたホワイト発光層と、
前記ホワイト発光層上に形成された金属電極とを更に含み、
前記レッドサブピクセルは、前記スイッチング素子とピクセル電極との間に形成されて前記ホワイト発光層による光のうち、レッド成分のみを透過するレッドカラーフィルター層により定義され、前記グリーンサブピクセルは、前記スイッチング素子とピクセル電極との間に形成されて前記ホワイト発光層による光のうち、グリーン成分のみを透過するグリーンカラーフィルター層により定義され、前記ブルーサブピクセルは、前記スイッチング素子とピクセル電極との間に形成されて前記ホワイト発光層による光のうち、ブルー成分のみを透過するブルーカラーフィルター層により定義され、前記ホワイトサブピクセルは、前記スイッチング素子とピクセル電極との間に形成されて前記ホワイト発光層による光のうち、ホワイト成分のみを透過するホワイトカラーフィルター層により定義されることを特徴とする請求項7記載の有機電界発光表示装置。 - 前記ピクセル電極上に形成されたホワイト発光層と、
前記ホワイト発光層上に形成された透明電極と、
前記透明電極上に形成された保護層とを更に含み、
前記レッドサブピクセルは、前記保護層上に形成されて前記ホワイト発光層による光のうち、レッド成分のみを透過するレッドカラーフィルターにより定義され、前記グリーンサブピクセルは、前記保護層上に形成されて前記ホワイト発光層による光のうち、グリーン成分のみを透過するグリーンカラーフィルターにより定義され、前記ブルーサブピクセルは、前記保護層上に形成されて前記ホワイト発光層による光のうち、ブルー成分のみを透過するブルーカラーフィルターにより定義され、前記ホワイトサブピクセルは、前記保護層上に形成されて前記ホワイト発光層による光のうち、ホワイト成分のみを透過するホワイトカラーフィルターにより定義されることを特徴とする請求項7記載の有機電界発光表示装置。 - 前記ピクセル電極上に形成されたホワイト発光層と、
前記ホワイト発光層上に形成された有機発光層と、
前記有機発光層上に形成された保護層とを更に含み、
前記レッドサブピクセルは、前記保護層上に形成されて前記ホワイト発光層による光のうち、レッド成分のみを透過するレッドカラーフィルターにより定義され、前記グリーンサブピクセルは、前記保護層上に形成されて前記ホワイト発光層による光のうち、グリーン成分のみを透過するグリーンカラーフィルターにより定義され、前記ブルーサブピクセルは、前記保護層上に形成されて前記ホワイト発光層による光のうち、ブルー成分のみを透過するブルーカラーフィルターにより定義され、前記ホワイトサブピクセルは、前記保護層上で前記ホワイト発光層による光を透過する領域により定義されることを特徴とする請求項7記載の有機電界発光表示装置。
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2003
- 2003-05-07 KR KR1020030029153A patent/KR100943273B1/ko active IP Right Grant
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2004
- 2004-03-19 US US10/804,722 patent/US7705810B2/en active Active
- 2004-03-23 TW TW093107790A patent/TW200424952A/zh unknown
- 2004-04-16 EP EP08155778.7A patent/EP1947632B1/en not_active Expired - Lifetime
- 2004-04-16 EP EP04252242.5A patent/EP1475771B1/en not_active Expired - Lifetime
- 2004-04-27 JP JP2004131099A patent/JP4944366B2/ja not_active Expired - Lifetime
- 2004-04-29 CN CN200410042063XA patent/CN1551707B/zh not_active Expired - Lifetime
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EP1475771A2 (en) | 2004-11-10 |
JP2004334199A (ja) | 2004-11-25 |
TW200424952A (en) | 2004-11-16 |
US7705810B2 (en) | 2010-04-27 |
KR100943273B1 (ko) | 2010-02-23 |
EP1475771B1 (en) | 2019-10-02 |
EP1947632A3 (en) | 2010-02-17 |
KR20040096273A (ko) | 2004-11-16 |
EP1947632B1 (en) | 2021-06-02 |
EP1475771A3 (en) | 2006-07-19 |
US20040222999A1 (en) | 2004-11-11 |
CN1551707B (zh) | 2010-09-29 |
EP1947632A2 (en) | 2008-07-23 |
CN1551707A (zh) | 2004-12-01 |
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