JP2023529161A - 電気光学ディスプレイおよびそれを駆動する方法 - Google Patents
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Abstract
Description
本願は、2020年6月11日に出願された米国仮出願第63/038,014号に関連し、その優先権を主張する。
(発明の分野)
故に、エッジ残影は、典型的に、一様なグレーエリアではなく、グレーの種々の陰影のエリアであろうが、特に、ヒトの眼が、各ピクセルが純黒色または純白色であると想定される単色画像内で、グレーのエリアを検出する能力を持っているので、依然として、眼で見え、不愉快であり得る。[段落24]ある場合、非対称ブルーミングが、エッジ残影に寄与し得る。「非対称ブルーミング」は、いくつかの電気光学媒体(例えば、その全体として本明細書に組み込まれる米国特許第7,002,728号に説明される銅クロマイト/チタニアのカプセル化された電気泳動媒体)では、逆方向への遷移中よりピクセルの一方の極端な光学状態から他方の極端な光学状態への遷移中、より大きなブルーミングが起こるという意味で、ブルーミングが「非対称」である現象を指し、本特許に説明される媒体では、典型的に、黒色から白色への遷移中のブルーミングは、白色から黒色への遷移中のそれより大きい。
例えば、ディスプレイピクセルを黒色に駆動するように構成された18フレームの持続時間と15ボルトの大きさとを伴う第1の部分502の後、ディスプレイピクセルを白色に駆動するように構成された18フレームの持続時間と負の15ボルトの大きさとを伴う第2の部分504が、続く(図5参照)。一方、黒色から白色への遷移(すなわち、B→W)波形は、ピクセルを白色に駆動するように設計された単一の完全な長パルスを含むことができる。ある場合、GCC16駆動モードが、差動ブルーミング効果を低減させ得るので、カラー用途により良好に好適であり得る。差動ブルーミングは、切り替わるピクセルのフリンジフィールドが、その隣接ピクセルの光学状態に影響を及ぼすとき、生じ得る。レンダリングされた画像において、ピクセルレベルのサイズパターンが存在し得、ピクセルが、異なる光学状態に進む。または、ピクセルが、異なる波形を使用して、異なる初期光学状態から同じ光学状態に進み、結果として、ピクセルが、異なるブルーミングアーチファクトを経験し、それらは、若干異なる最終明度に達するであろう。全てのこれらのブルーミングアーチファクトは、差動ブルーミング残影に寄与する。GCC16駆動モードは、いくつかの実施形態では、GC16のそれと比較して、より長い更新時間を有し得る。例えば、図4に図示されるように、GCC16黒色から白色への遷移(すなわち、B→W)波形は、GC16駆動スキームのそれより長くあることができる。GCC16B→W波形は、前部パルス402部分と、中間パルス部分404と、後部パルス部分とを含み得、各部分は、最適視認外観を達成するために、調節されることができる。
If ピクセルがカラー表示ピクセルである場合、Then GCC16B->W遷移およびGCC16またはGC16W->W遷移を印加する
Else
If ピクセルがグレースケール画像を表示している場合、Then GC16B->W遷移およびGCC16またはGC16W->W遷移を印加する
Else
If ピクセルが、エッジアーチファクト取り除きを必要とすることが識別される場合、Then GC16B->W遷移およびT W->W遷移を印加する
Else
GC16B->W遷移および空のW->W遷移を印加する
End
Claims (17)
- 複数のディスプレイピクセルを有する電気光学ディスプレイを駆動する方法であって、前記方法は、
ピクセルがカラーを表示するように決定された場合、第1の波形を印加することであって、前記第1の波形は、黒色から白色への遷移および白色から白色への遷移のための第1の組の波形から選定される、ことと、
前記ピクセルがグレースケール画像を表示するように決定された場合、第2の波形を印加することであって、前記第2の波形は、黒色から白色への遷移および白色から白色への遷移のための第2の組の波形から選定される、ことと
を含む、方法。 - 前記ピクセルが白色背景上に黒色テキストを表示するように決定された場合、第3の波形を印加することをさらに含み、前記第3の波形は、黒色から白色への遷移および白色から白色への遷移のための第3の組の波形から選定される、請求項1に記載の方法。
- アルゴリズムが前記ピクセルにエッジアーチファクト取り除きを実施するために必要とされる場合、第4の波形を印加することをさらに含み、前記第4の波形は、黒色から白色への遷移および白色から白色への遷移のための第4の組の波形から選定される、請求項1に記載の方法。
- 前記第1の組の波形は、第1の駆動モードのために構成されている、請求項1に記載の方法。
- 前記第1の駆動モードは、前記ディスプレイ上にカラーを表示するために構成されている、請求項4に記載の方法。
- 前記第2の組の波形は、第2の駆動モードのために構成されている、請求項1に記載の方法。
- 前記第2の駆動モードは、前記ディスプレイ上にグレースケール画像を表示するために構成されている、請求項6に記載の方法。
- 前記第3の組の波形は、第3の駆動モードのために構成されている、請求項2に記載の方法。
- 前記第3の駆動モードは、前記ディスプレイ上に白黒色下地上に黒色テキストを表示するために構成されている、請求項8に記載の方法。
- カラーフィルタアレイをさらに備えている請求項1に記載の方法を実行するように構成された電気光学ディスプレイ。
- 回転二色部材、エレクトロクロミック、またはエレクトロウェッティング材料を備えている、請求項10に記載のディスプレイ。
- 流体中に配置された複数の荷電粒子を備えている電気泳動材料を備え、前記複数の荷電粒子は、電場の影響下で前記流体を通して移動することが可能である、請求項10に記載の電気光学ディスプレイ。
- 前記荷電粒子および前記流体は、複数のカプセルまたはマイクロセル内に閉じ込められている、請求項10に記載の電気光学ディスプレイ。
- 前記荷電粒子および前記流体は、ポリマー材料を備えている連続相によって包囲された複数の別々の液滴として存在する、請求項10に記載の電気光学ディスプレイ。
- 双安定電気光学ディスプレイの動作を制御することが可能であるディスプレイコントローラであって、前記コントローラは、前記ディスプレイを動作させる駆動方法を実行するように構成され、前記方法は、
ピクセルがカラーを表示するように決定された場合、第1の波形を印加することであって、前記第1の波形は、黒色から白色への遷移および白色から白色への遷移のための第1の組の波形から選定される、ことと、
前記ピクセルがグレースケール画像を表示するように決定された場合、第2の波形を印加することであって、前記第2の波形は、黒色から白色への遷移および白色から白色への遷移のための第2の組の波形から選定される、ことと
を含む、コントローラ。 - 前記駆動方法は、前記ピクセルが白色背景上に黒色テキストを表示するように決定された場合、第3の波形を印加することをさらに含み、前記第3の波形は、黒色から白色への遷移および白色から白色への遷移のための第3の組の波形から選定される、請求項15に記載のコントローラ。
- 前記駆動方法は、アルゴリズムが前記ピクセルにエッジアーチファクト取り除きを実施するために必要とされる場合、第4の波形を印加することをさらに含み、前記第4の波形は、黒色から白色への遷移および白色から白色への遷移のための第4の組の波形から選定される、請求項15に記載コントローラ。
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US202063038014P | 2020-06-11 | 2020-06-11 | |
US63/038,014 | 2020-06-11 | ||
PCT/US2021/035885 WO2021252283A1 (en) | 2020-06-11 | 2021-06-04 | Electro-optic displays, and methods for driving same |
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JP7496002B2 (ja) | 2024-06-05 |
TW202205246A (zh) | 2022-02-01 |
KR20230008207A (ko) | 2023-01-13 |
TWI794830B (zh) | 2023-03-01 |
CN115699151A (zh) | 2023-02-03 |
CA3177451A1 (en) | 2021-12-16 |
US11520202B2 (en) | 2022-12-06 |
EP4165623A1 (en) | 2023-04-19 |
EP4165623A4 (en) | 2024-07-10 |
WO2021252283A1 (en) | 2021-12-16 |
US20210389637A1 (en) | 2021-12-16 |
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