JP2016532153A - 電気光学ディスプレイを駆動するための方法 - Google Patents
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Abstract
Description
(a)電気泳動粒子、流体、および流体添加剤。例えば、米国特許第7,002,728号および第7,679,814号を参照されたい。
(b)カプセル、バインダ、およびカプセル化プロセス。例えば、米国特許第6,922,276号および第7,411,719号を参照されたい。
(c)電気光学材料を含有するフィルムおよびサブ部材。例えば、米国特許第6,982,178号および第7,839,564号を参照されたい。
(d)バックプレーン、接着層、および他の補助層、ならびにディスプレイにおいて使用される方法。例えば、米国特許第7,116,318号および第7,535,624号を参照されたい。
(e)色形成および色調節。例えば、米国特許第7,075,502号および米国特許出願公開第2007/0109219号を参照されたい。
(f)ディスプレイを駆動するための方法。前述のMEDEOD出願を参照されたい。
(g)ディスプレイの適用。例えば、米国特許第7,312,784号および米国特許出願公開第2006/0279527号を参照されたい。
(h)米国特許第6,241,921号、第6,950,220号、および第7,420,549号、ならびに米国特許出願公開第2009/0046082号に説明されるような非電気泳動ディスプレイ。
(a)以前の状態依存性。少なくともいくつかの電気光学媒体では、画素を新規の光学状態に切り替えるため必要とされるインパルスは、現在および所望の光学状態だけでなく、画素の以前の光学状態にも依存する。
(b)滞留時間依存性。少なくともいくつかの電気光学媒体では、画素を新規の光学状態に切り替えるために必要とされるインパルスは、画素がその種々の光学状態において費やした時間に依存する。本依存性の正確な性質は、よく理解されていないが、一般に、画素がより長くその現在の光学状態であるほど、より多くのインパルスが必要とされる。
(c)温度依存性。画素を新規の光学状態に切り替えるために必要とされるインパルスは、温度に大きく依存する。
(d)湿度依存性。画素を新規の光学状態に切り替えるために必要とされるインパルスは、少なくともいくつかの種類の電気光学媒体では、周囲湿度に依存する。
(e)機械的均一性。画素を新規の光学状態に切り替えるために必要とされるインパルスは、ディスプレイの機械的変動、例えば、電気光学媒体または関連積層接着剤の厚さの変動の影響を受け得る。他の種類の機械的不均一性が、媒体の異なる製造バッチ間の必然的変動、製造公差、および材料変動から生じ得る。
(f)電圧誤差。画素に印加される実際のインパルスは、ドライバによって送達される電圧の回避不可能なわずかな誤差のため、理論的に印加されるインパルスとは必然的にわずかに異なる。
L*=116(R/R0)1/3−16
を有し、ここでは、Rは、反射率であり、R0は、標準反射率値である)誤差をもたらすと想像されたい。50回の遷移の後、本誤差は、10L*まで蓄積するであろう。おそらく、より現実的には、ディスプレイの理論的反射率と実際の反射率との間の差異の観点から表される、各遷移上の平均誤差が、±0.2L*であると仮定されたい。100回の連続的遷移の後、画素は、それらの予期される2L*の状態から、平均偏差を表示するであろうし、そのような偏差は、ある種類の画像上において、平均観察者に明白となる。
「R3状態」→「白色線」→「R2状態」→「黒色線」→「R1状態」
ここでは、R3は、画素の初期状態であり、R2は、第1の所望のグレーレベルであり、R1は、第2の所望のグレーレベルである。駆動スキームが白色線と黒色線の間で交代する様式は、複線バウンス駆動スキームの基本的リミットサイクル波形構造が、維持されることを可能にする。より重要なことには、ASRBDSは、設計者が、独立して2つの異なるインパルス電位、すなわち、白色線から跳ね返る駆動スキームのための1つと、黒色線から跳ね返る駆動スキームのためのもう1つとを設定することを可能にするため、グレー精度レベルの配置を達成し、残影をなくすことに対し、より大きな自由度を与える。
Claims (14)
- 複数の画素を有し、それぞれ、2つの極限光学状態および少なくとも1つの中間グレーレベルを表示することが可能である電気光学ディスプレイを駆動する方法であって、
(a)少なくとも1つの画素を、初期中間グレーレベルから、1つの極限光学状態に、そこから、第1の所望の中間グレーレベルに駆動するステップであって、前記少なくとも1つの画素が、それによって、前記ディスプレイ上に第1の画像の一部を形成する、ステップと、
(b)前記少なくとも1つの画素が、有限時間長の間、前記第1の所望の中間グレーレベルのままであることを可能にするステップと、
(c)その後、前記少なくとも1つの画素を、前記第1の所望の中間グレーレベルから、反対の極限光学状態に、そこから、第2の所望の中間グレーレベルに駆動するステップであって、前記少なくとも1つの画素が、それによって、前記ディスプレイ上に第2の画像の一部を形成する、ステップと、
を特徴とする、方法。 - 前記有限期間は、前記少なくとも1つの画素が、前記初期中間グレーレベルから、1つの極限光学状態に、そこから、前記第1の所望の中間グレーレベルに駆動される期間と少なくとも同じ長さである、請求項1に記載の方法。
- 前記有限期間は、少なくとも約1秒である、請求項1に記載の方法。
- ステップ(a)−(c)は、前記ディスプレイの1つまたはそれを上回る画定領域内の画素のみに適用され、異なる駆動スキームが、前記画定領域外の画素に適用される、請求項1に記載の方法。
- 前記ディスプレイの画素は、少なくとも第1および第2のグループに分割され、前記第1の画素のグループは、ステップ(a)中に1つの極限光学状態に、ステップ(c)中に反対の極限光学状態に駆動され、前記第2の画素のグループは、ステップ(a)中に前記反対の極限光学状態に、ステップ(c)中に前記1つの極限光学状態に駆動される、請求項1に記載の方法。
- ステップ(a)およびステップ(c)のうちの少なくとも1つは、少なくとも1つの平衡パルスの対および/または少なくとも1つのゼロ電圧の期間を備える、波形を使用して実行される、請求項1に記載の方法。
- 前記電気光学ディスプレイは、回転2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る、請求項1に記載の方法。
- 前記電気光学ディスプレイは、流体中に配置され、かつ電場の影響下で流体を通って移動することが可能な複数の荷電粒子を備える、電気泳動材料を備える、請求項1に記載の方法。
- 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る、請求項8に記載の方法。
- 前記荷電粒子および前記流体は、ポリマー材料を備える連続相によって囲繞される複数の個々の液滴として存在する、請求項8に記載の方法。
- 前記流体は、ガス状である、請求項8に記載の方法。
- 双安定性電気光学ディスプレイを動作させることが可能であり、請求項1に記載の方法を実行するように配列されることを特徴とする、ディスプレイコントローラ。
- 請求項1に記載の方法を実行するように配列されることを特徴とする、電気光学ディスプレイ。
- 請求項13に記載のディスプレイを特徴とする、電子ブックリーダ、ポータブルコンピュータ、タブレットコンピュータ、セルラー電話、スマートカード、標識、腕時計、棚ラベル、可変伝送窓、またはフラッシュドライブ。
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US9620048B2 (en) | 2017-04-11 |
CN105580067A (zh) | 2016-05-11 |
WO2015017503A1 (en) | 2015-02-05 |
CN105580067B (zh) | 2018-01-26 |
JP6097887B2 (ja) | 2017-03-15 |
US20140333685A1 (en) | 2014-11-13 |
HK1218017A1 (zh) | 2017-01-27 |
US20160240124A9 (en) | 2016-08-18 |
EP3028270A1 (en) | 2016-06-08 |
EP3028270A4 (en) | 2017-07-12 |
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