JP7381527B2 - 表示パネル及びこれを用いた表示装置 - Google Patents
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- 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]
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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
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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)
- Electroluminescent Light Sources (AREA)
- Control Of El Displays (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
明細書の全体に亘って同一の参照符号は、同一の構成要素を指す。
Claims (18)
- ピクセルが配置された第1ピクセル領域と、
前記第1ピクセル領域に比べて解像度又はPPI(Pixels Per Inch)の低いピクセルが配置された第2ピクセル領域と、
を含み、
前記第1ピクセル領域のピクセルのそれぞれは、
発光素子を駆動する第1駆動素子を含み、
前記第2ピクセル領域のピクセルのそれぞれは、
発光素子を駆動する第2駆動素子を含み、
前記第2駆動素子は、
半導体チャネルを挟んで重畳した第1ゲート電極及び第2ゲート電極を含み、
前記第2駆動素子の第1ゲート電極へ前記第2ピクセル領域のピクセルに書き込まれるピクセルデータのデータ電圧が印加され、
前記第2駆動素子の第2ゲート電極へ前記第2ピクセル領域の輝度を高める補償電圧が印加され、
前記補償電圧が、前記第2ピクセル領域に配置されたサブピクセルの色別に分離されて前記第2ピクセル領域のピクセルに印加される、
表示パネル。 - 前記第1駆動素子は、
半導体チャネルを挟んで重畳した第1及び第2ゲート電極を含み、
前記第1駆動素子の第1ゲート電極へ前記第1ピクセル領域のピクセルに書き込まれるピクセルデータのデータ電圧が印加され、
前記第1駆動素子の第2ゲート電極へ直流電圧が印加される、請求項1に記載の表示パネル。 - 前記第1駆動素子は、
ピクセル駆動電圧が印加される第1電極と、
前記発光素子のアノード電極に接続される第2電極と、を含み、
前記第1駆動素子の前記第2ゲート電極へ前記ピクセル駆動電圧が印加される、請求項2に記載の表示パネル。 - 前記第2駆動素子の第2ゲート電極に接続されて、前記補償電圧を前記第2駆動素子の第2ゲート電極に印加する補助データラインをさらに含む、請求項1に記載の表示パネル。
- 前記補助データラインは、絶縁層を貫通するコンタクトホールを介して前記第2駆動素子の第2ゲート電極に接続される、請求項4に記載の表示パネル。
- 前記第2ピクセル領域内で、前記ピクセルに接続された補助データラインが互いに接続される、請求項4に記載の表示パネル。
- 前記第2ピクセル領域のピクセルのそれぞれは、
前記補償電圧を前記第2駆動素子の第2ゲート電極に印加するスイッチ素子をさらに含む、請求項1に記載の表示パネル。 - 前記第1及び第2ピクセル領域のピクセルのそれぞれは、
色が異なる多数のサブピクセルを含み、
前記第2ピクセル領域は、
前記第2駆動素子の第2ゲート電極に接続されて、前記補償電圧を前記第2駆動素子の第2ゲート電極に印加する補助データラインを含み、
前記補助データラインは、
前記第2ピクセル領域内のサブピクセルの色別に分離されて前記第2ピクセル領域のサブピクセルに配置された、前記第2駆動素子の第2ゲート電極に接続される、請求項1に記載の表示パネル。 - ピクセルが配置された第1ピクセル領域と、前記第1ピクセル領域に比べて解像度又はPPI(Pixels Per Inch)の低いピクセルが配置された第2ピクセル領域と、を含む表示パネルと、
入力映像のピクセルデータをデータ電圧に変換して、前記第1及び第2ピクセル領域のピクセルに接続されたデータラインへ前記データ電圧を供給するデータ駆動部と、
前記第2ピクセル領域の輝度を高める補償電圧を発生する輝度補償部と、を含み、
前記補償電圧が前記第2ピクセル領域のピクセルに印加され、
前記第1ピクセル領域のピクセルのそれぞれは、
発光素子を駆動する第1駆動素子を含み、
前記第2ピクセル領域のピクセルのそれぞれは、
発光素子を駆動する第2駆動素子を含み、
前記第2駆動素子は、
半導体チャネルを挟んで重畳した第1ゲート電極及び第2ゲート電極を含み、
前記第2駆動素子の第1ゲート電極へ前記第2ピクセル領域のピクセルに書き込まれるピクセルデータのデータ電圧が印加され、
前記第2駆動素子の第2ゲート電極へ前記第2ピクセル領域の輝度を高める補償電圧が印加され、
前記補償電圧が、前記第2ピクセル領域に配置されたサブピクセルの色別に分離されて前記第2ピクセル領域のピクセルに印加される、
表示装置。 - 前記データ駆動部は、
前記データ電圧を前記第1ピクセル領域のデータラインに出力する複数の第1チャネルと、
前記データ電圧を前記第2ピクセル領域のデータラインに出力する複数の第2チャネルと、を含み、
前記第1及び第2チャネルの出力電圧範囲が同一であり、
前記第1及び第2チャネルから出力される前記データ電圧の電圧範囲が、前記出力電圧範囲内で同一であり、
前記第1及び第2チャネルの出力電圧範囲は、前記データ電圧の電圧範囲よりも大きい電圧マージンと、前記データ電圧の電圧範囲よりも小さい電圧マージンとを含み、
前記第1及び第2チャネルの電圧マージンが同一である、請求項9に記載の表示装置。 - 前記補償電圧は、特定の電圧であるか、入力映像の輝度特性と階調分布特性に応じて可変される、請求項9に記載の表示装置。
- 前記補償電圧が、前記第2ピクセル領域に配置されたサブピクセルの色別に異なるように設定される、請求項9に記載の表示装置。
- 前記第1及び第2ピクセル領域に表示される入力映像の平均輝度が予め設定されたしきい値よりも大きい映像であるとき、前記補償電圧が前記第2ピクセル領域のピクセルに印加される、請求項9に記載の表示装置。
- 前記第1及び第2ピクセル領域に表示される入力映像の平均輝度が予め設定されたしきい値よりも大きく、前記第2ピクセル領域に書き込まれるピクセルデータのうちで予め設定された基準値以上の高階調のピクセル数が所定のしきい値以上多いとき、前記補償電圧が前記第2ピクセル領域のピクセルに印加される、請求項9に記載の表示装置。
- 前記第2ピクセル領域に表示される入力映像の平均輝度が予め設定されたしきい値よりも大きい映像であるとき、前記補償電圧が前記第2ピクセル領域のピクセルに印加される、請求項9に記載の表示装置。
- 前記第2ピクセル領域に表示される入力映像の平均輝度が予め設定されたしきい値よりも大きく、前記第2ピクセル領域に書き込まれるピクセルデータのうちで予め設定された基準値以上の高階調のピクセル数が所定のしきい値以上多いとき、前記補償電圧が前記第2ピクセル領域のピクセルに印加される、請求項9に記載の表示装置。
- 前記第2ピクセル領域に書き込まれるピクセルデータのうちで予め設定された基準値以上の高階調のピクセルデータが所定のしきい値以上多いとき、前記補償電圧が前記第2ピクセル領域のピクセルに印加される、請求項9に記載の表示装置。
- ガンマリファレンス電圧を発生する電源部をさらに含み、
前記データ駆動部のチャネルのそれぞれは、
前記ガンマリファレンス電圧から分圧された階調別のガンマ補償電圧で、前記ピクセルデータを前記データ電圧に変換するデジタル-アナログ変換器を備え、
前記電源部又は前記データ駆動部は、前記輝度補償部を含み、前記補償電圧を出力する、請求項9に記載の表示装置。
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