JP2021119423A - ゼラチン結合剤中にカプセルに包まれた顔料を含む電気光学媒体 - Google Patents
ゼラチン結合剤中にカプセルに包まれた顔料を含む電気光学媒体 Download PDFInfo
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Abstract
Description
本願は、米国仮特許出願第62/520,731号(2018年6月16日出願)の利益およびそれに対する優先権を主張する。上記出願、および下記の他の米国特許、公開、および係属出願全ての全内容は、参照により本明細書に引用される。
ト化されたカプセルの良好に挙動するスラリーに役立たない。故に、電気泳動ディスプレイ(例えば、Amazon Kindle(登録商標))のために生産された大部分の電気光学媒体は、ポリウレタンの結合剤に依拠する。
む電気光学ディスプレイの中に組み込まれることもできる。代替として、可変透過率デバイスは、第1の光透過性電極層、接着剤層、本発明の電気光学媒体、および第2の光透過電極層を組み合わせることによって、製作されることができる。いくつかの可変透過率デバイスでは、荷電顔料粒子は、カーボンブラックを含むであろう。
ないこともある。実際、使用される粒子が、光散乱する場合、部分的透過性「グレー状態」は、実際には、白色に着色され得る。用語「モノクロ」は、以降、ピクセルを介在グレー状態を伴わずにその2つの極限光学状態にのみ駆動する駆動スキームを示すために使用され得る。
(a)電気泳動粒子、流体、および流体添加物(例えば、米国特許第5,961,804号、第6,017,584号、第6,120,588号、第6,120,839号、第6,262,706号、第6,262,833号、第6,300,932号、第6,323,989号、第6,377,387号、第6,515,649号、第6,538,801号、第6,580,545号、第6,652,075号、第6,693,620号、第6,721,083号、第6,727,881号、第6,822,782号、第6,870,661号、第7,002,728号、第7,038,655号、第7,170,670号、第7,180,649号、第7,230,750号、第7,230,751号、第7,236,290号、第7,247,379号、第7,312,916号、第7,375,875号、第7,411,720号、第7,532,388号、第7,679,814号、第7,746,544号、第7,848,006号、第7,903,319号、第8,018,640号、第8,115,729号、第8,199,395号、第8,270,064号、および第8,305,341号、ならびに米国特許出願公開第2005/0012980号、第2008/0266245号、第2009/0009852号、第2009/0206499号、第2009/0225398号、第2010/0148385号、第2010/0207073号、および第2011/0012825号参照)
(b)カプセル、結合剤、およびカプセルに包むプロセス(例えば、米国特許第6,922,276号および第7,411,719号参照)
(c)電気光学材料を含むフィルムおよびサブアセンブリ(例えば、米国特許第6,982,178号および第7,839,564号参照)
(d)バックプレーン、接着剤層、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号参照)
(e)色形成および色調節(例えば、米国特許第7,075,502号および第7,839,564号参照)
(f)ディスプレイを駆動する方法(例えば、米国特許第7,012,600号および第7,453,445号)
(g)ディスプレイの用途(例えば、米国特許第7,312,784号および第8,009,348号)
(h)非電気泳動ディスプレイ(例えば、米国特許第6,241,921号、第6,950,220号、第7,420,549号、および第8,319,759号、ならびに米国特許出願公開第2012/0293858号)。
Grove, NJ)から利用可能なCargille(登録商標)屈折率整合流体等の屈折率整合剤の添加を用いて修正され得る。本発明のカプセルに包まれた媒体では、粒子の分散の屈折率が、カプセルに包む材料のそれと可能な限り厳密に整合し、ヘイズを低減させることが好ましい。この屈折率整合は、溶媒の屈折率が封止剤のそれと近いとき、最良に達成される(一般に利用可能なポリマー封止剤を採用するとき)。大部分の事例では、550nmにおいて1.51〜1.57、好ましくは、550nmにおいて約1.54の屈折率を伴う内相を有することが有益である。
2014−0011913号(その全ての内容は、参照することによってその全体として本明細書に組み込まれる)に説明されるように、要求される粒子の電荷極性および電荷レベルに基づいて、公知の技法によって修正され得る。
れ、グルタルアルデヒドの水溶液(カプセル壁を架橋結合するための剤)が、添加される。結果として生じる混合物は、次いで、25°Cまで加温され、さらに12時間にわたって激しく攪拌される。仕上げステップ(カプセル混合物を50°Cで約1時間にわたって保持する)が、残りのグルタルアルデヒドを不活性化するために使用され、それによって、カプセルが、ふるい分け中、分離するであろうことを保証する。このプロセスは、20〜100μmの範囲内のカプセルをもたらし、多くの場合、開始材料の50パーセント以上を使用可能カプセルの中に組み込む。生産されたカプセルは、次いで、ふるい分けまたは他のサイズ除外ソートによって、サイズ別に分離される。約120μmを超えるカプセルは、カプセルが、処理中、剪断力から破損する傾向にあるので、困難である。加えて、100μmより大きいカプセルは、裸眼で可視であり、したがって、その存在は、可変透過率フィルムにおいてリップルとして見られる。
ブタゼラチン(Gelita USA,Inc)およびアカシア(AEP Colloids)の水溶液に添加することによってカプセルに包まれた。内相の添加が完了後、混合物が、攪拌および加熱され、内相を約40〜45μmの平均直径を有する液滴の中に乳化した。さらなる液滴分解を防止するために、水と、水中5重量%Kolliphor P188(Aldrich 15759)を伴う10重量%Emperor2000カーボンブラック(Cabot Corp.)の分散剤とが、添加された。
イソブチレンの溶液と混成された。内相混合物が、次いで、混合物を乾燥ブタゼラチンおよびアカシアの水溶液に添加することによってカプセルに包まれた。内相の添加が完了後、混合物は、混合することによって乳化され、加熱しながらpH調節された。混合物の温度は、次いで、降下させられ、50重量%グルタルアルデヒドが、継続した激しい攪拌を伴って添加された。この添加後、混合物は、徐々に加温され、激しく攪拌され、次いで、冷却された。結果として生じるカプセルは、ふるいを用いてソートされ、平均サイズ約40μmを伴うサイズ15〜50μmのカプセルの混合物を作成した。
(項1)
複数のカプセルと、結合剤とを備えている電気光学媒体であって、各カプセルは、複数の荷電粒子と、流体とを含み、前記荷電粒子は、電場の印加によって移動可能であり、前記結合剤は、魚ゼラチンとアカシアとを備えている、電気光学媒体。
(項2)
前記カプセルは、ゼラチンとアカシアとを備えている、上記項1に記載の電気光学媒体。
(項3)
前記結合剤は、0.5〜2.0のアカシアに対する魚ゼラチンの質量比率を有する、上記項1に記載の電気光学媒体。
(項4)
前記結合剤は、550nm、50%RHで、1.47〜1.57の屈折率を有する、上記項1に記載の電気光学媒体。
(項5)
前記電場の印加は、前記荷電粒子を開状態と閉状態との間で切り替え、前記カプセルの光の吸収度は、前記開状態におけるより前記閉状態において大きい、上記項1に記載の電気光学媒体。
(項6)
前記荷電顔料粒子は、第1の色を有する第1のタイプの粒子と、第2の色を有する第2のタイプの粒子とを備え、
前記第1の色と第2の色とは、異なり、前記第1のタイプの粒子は、前記第2のタイプの粒子と反対の電荷を有する、上記項1に記載の電気光学媒体。
(項7)
前記荷電顔料粒子は、少なくとも3つの組の粒子を備え、各組の粒子は、他の2つの組の粒子の色と異なる色を有し、各組の粒子の色は、白色、黒色、赤色、緑色、青色、マゼンタ色、シアン色、および黄色から成る群から選択される、上記項1に記載の電気光学媒体。
(項8)
2つの電極間に配置された上記項1に記載の可変透過率電気泳動媒体層を備えているデバイスであって、前記2つの電極のうちの少なくとも1つは、光透過性である、デバイス。
(項9)
前記2つの電極は、光透過性である、上記項8に記載のデバイス。
Claims (1)
- 明細書に記載の発明。
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EP3639088B1 (en) | 2023-08-09 |
CN110603484B (zh) | 2023-05-02 |
EP3639088C0 (en) | 2023-08-09 |
EP3639088A1 (en) | 2020-04-22 |
US10983410B2 (en) | 2021-04-20 |
TWI710403B (zh) | 2020-11-21 |
JP6959361B2 (ja) | 2021-11-02 |
EP3639088A4 (en) | 2021-02-24 |
TW201906663A (zh) | 2019-02-16 |
US20180366069A1 (en) | 2018-12-20 |
CN110603484A (zh) | 2019-12-20 |
JP2020521172A (ja) | 2020-07-16 |
ES2963164T3 (es) | 2024-03-25 |
WO2018232099A1 (en) | 2018-12-20 |
JP2022001964A (ja) | 2022-01-06 |
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