JP2019511004A - 透過率可変フィルム - Google Patents
透過率可変フィルム Download PDFInfo
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- JP2019511004A JP2019511004A JP2018543088A JP2018543088A JP2019511004A JP 2019511004 A JP2019511004 A JP 2019511004A JP 2018543088 A JP2018543088 A JP 2018543088A JP 2018543088 A JP2018543088 A JP 2018543088A JP 2019511004 A JP2019511004 A JP 2019511004A
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- liquid crystal
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- 230000003190 augmentative effect Effects 0.000 claims abstract description 7
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- 210000002858 crystal cell Anatomy 0.000 claims description 129
- 230000003287 optical effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 abstract description 8
- 239000010408 film Substances 0.000 description 211
- 239000010410 layer Substances 0.000 description 67
- 239000000975 dye Substances 0.000 description 48
- 239000000758 substrate Substances 0.000 description 44
- 210000004027 cell Anatomy 0.000 description 20
- 238000005259 measurement Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 19
- 238000010521 absorption reaction Methods 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 13
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- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
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- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
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- 239000001000 anthraquinone dye Substances 0.000 description 1
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- 150000001925 cycloalkenes Chemical class 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
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- JLYXXMFPNIAWKQ-UHFFFAOYSA-N γ Benzene hexachloride Chemical compound ClC1C(Cl)C(Cl)C(Cl)C(Cl)C1Cl JLYXXMFPNIAWKQ-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
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- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
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- G02F1/13475—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which at least one liquid crystal cell or layer is doped with a pleochroic dye, e.g. GH-LC cell
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- G02B27/0101—Head-up displays characterised by optical features
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- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13725—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on guest-host interaction
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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Abstract
Description
本出願は、2016年04月14日に出願された大韓民国特許出願第10−2016−0045629号に基づく優先権の利益を主張し、該当韓国特許出願の文献に開示されたすべての内容は本明細書の一部として組み入れるものとする。
本出願は、透過率可変フィルムに関する。
異方性度(R)=[E(p)−E(s)]/[E(p)+2*E(s)]
20:第2液晶セル
11:第1電極フィルム
12:第1垂直配向膜
13:第1GHLC層
14:第2垂直配向膜
15:第2電極フィルム
21:第3電極フィルム
22:第3垂直配向膜
23:第2GHLC層
24:第4垂直配向膜
25:第4電極フィルム
30:左眼用または右眼用レンズ
40:フレーム
液晶セルのプレチルト角度は、次の方式で測定できる。液晶セルのプレチルト角度は、一つの液晶セルに対して測定する方式と2個の液晶セルが重畳されているダブルセルで測定する方式があり、以下、各々を記述する。前記でダブルセルで測定する方式の場合は、第1〜第4垂直配向膜が全て類似なプレチルト角度を有する場合に有用である。一方、プレチルト方向は、各液晶セルを水平配向させた状態で前記液晶セルの一面に吸収型線形偏光子を配置し、前記偏光子を360度回転させながら透過率を測定して確認し得る。例えば、前記偏光子を360度回転させる過程で、透過率が最小になるときに前記偏光子の吸収軸と垂直を成す角度または水平を成す角度をプレチルト方向に規定し得る。
まず、図11に示したように、光源と透過率測定センサー(ex.LCMS−200)の間に液晶セルを配置する。前記状態で、図面に点線で表示したように、測定センサーと光源を最短距離で連結する方向をY軸として定義し、前記Y軸と直交する方向をX軸として定義する。その後、図11に示したように、液晶セルを回転させて光源から光を照射しながら測定センサーで透過率を評価する。この過程で、液晶セルの配向状態は垂直配向状態で維持できる。前記のような過程を通じて透過率を測定するときに、透過率が最大になる地点で前記液晶セルの表面法線(図面で実線表示)とY軸が成す角度を通じてプレチルト角を測定する。例えば、図11で、Y軸と前記表面法線がA度を成す場合に一番高い透過率が具現される場合、プレチルト角度は、90度からA度を引いた数値で定義され得る。前記でA度は時計または反時計方向で測定した正の数である。
ダブルセルの場合にも前記のような方式でプレチルト角を測定し得る。まず、図12に示したように、ダブルセルを光源と透過率測定センサー(ex.LCMS−200)の間に配置する。すなわち、図12で、第1液晶セル10の先方(図面から出る方向)または後側(図面に入る方向)のうちいずれか一側に光源を配置し、他の一方に測定センサーを配置して、ダブルセルを図面の回転方向に回転させながら、透過率が最大になる時点でY軸(光源と測定センサーを最短距離で連結する方向の軸)とダブルセルの表面法線が成す角度(前記A度)を測定した後、90度から前記角度の絶対値を引いた数値をプレチルト角として定義し得る。この場合にも液晶セル10、20の配向は、垂直配向で維持され得る。
透明伝導性フィルムとして、横の長さが約300mmであり、縦の長さが約200mmであるPC(polycarbonate)フィルムの一面に、ITO(Indium Tin Oxide)層が形成されたフィルムを準備した。前記フィルムのITO層面に、垂直配向膜としては、HANCHEM社製のPVM−11ポリイミド層を形成し、液晶としては、HCCH社製のHNG730200(ne:1.551、no:1.476、ε//:9.6、ε⊥:9.6、TNI:100℃、△n:0.075、△ε:−5.7)を準備し、異方性染料としては、BASF社製のX12を準備した。
実施例1の透過率可変フィルムの製造において、第1上部基板、第1下部基板、第2上部基板及び第2下部基板の垂直配向膜のプレチルト角を各々82度に変更したこと以外は、実施例1と同一に透過率可変フィルムを製造した。前記でプレチルト角を制御するために、ラビング時にラビング布の回転rpmを約1000rpmにし、stage移動速度を約1.16m/minにし、ラビング深さ(rubbing depth)を約280μmに制御した。
実施例1の透過率可変フィルムの製造において、第1上部基板、第1下部基板、第2上部基板及び第2下部基板の垂直配向膜のプレチルト角を各々75度に変更したこと以外は、実施例1と同一に透過率可変フィルムを製造した。前記でプレチルト角を制御するために、ラビング時にラビング布の回転rpmを約1000rpmにし、stage移動速度を約1.16m/minにし、ラビング深さ(rubbing depth)を約380μmに制御した。
実施例1の透過率可変フィルムの製造において、第1液晶セル及び第2液晶セルのセルギャップが各々8μmになるようにスペーサのサイズを変更したこと以外は、実施例1と同一に透過率可変フィルムを製造した。
実施例1の透過率可変フィルムの製造において、第1液晶セルと第2液晶セルを上部基板と上部基板のラビング方向が約45度を成すようにOCA粘着剤でラミネーションしたこと以外は、実施例1と同一に透過率可変フィルムを製造した。
実施例1の第1液晶セルの製造において、第1上部基板と第1下部基板のラビング方向が互いに180度ではない90度になるようにラミネーションし、液晶に左旋性のカイラル成分(chiral dopant)を添加してピッチが100μmになるようにしたこと以外は、実施例1の第1液晶セルの製造と同一な方法を実行して、reverse−TN型液晶−染料フィルムセルを製造することで透過率可変フィルムを準備した。
比較例2の透過率可変フィルムの上部基板のラビング方向と吸収軸が一致する方向に偏光板をOCA粘着剤でラミネーションして、比較例3の透過率可変フィルムを製造した。
実施例1の透過率可変フィルムの製造において、第1上部基板、第1下部基板、第2上部基板及び第2下部基板のラビング方向を、横軸を基準として時計方向に各々0度、180度、90度及び270度を成すようにラビング配向したこと以外は、実施例1と同一に透過率可変フィルムを製造した。
透過率可変フィルムの液晶セルの上部基板及び下部基板の配向膜を、TMAH(Tetramethylammonium hydroxide)2%水溶液及びNMP(N−Methyl−2−Pyrrolidone)を1:9で混合した洗浄液で、端の部分を洗浄した後にシルバーペーストをつけて、100℃の温度で15分間加温した後、電極テープで連結して、電圧印加を準備する。このとき、ダブルセル構造の透過率可変フィルムの場合、4個の電極を、第1上部基板と第2上部基板の電極テープを連結して端子を一つ作り、第1下部基板と第2下部基板の電極テープを連結して端子を一つ作り上げて準備する。準備したサンプルをバックライト上に乗せて、二つの電極を関数発生器(function generator)の端子に連結し、0Vrmsから15Vrmsまで電圧を印加しながらフォトダイオードで輝度値を計測して透過率を測定した。このとき、バックライトの初期輝度値を計測して百分率に換算して透過率値を記録する。コントラスト比は、電圧非印加状態での透過率(Tc)に対する15V電圧印加時の透過率(T)の割合(Tc/T)である。
Claims (11)
- 第1ゲストホスト液晶層を含む第1液晶セル及び第2ゲストホスト液晶層を含む第2液晶セルを含み、
前記第1及び第2液晶セルは、互いに重畳されて含まれており、
前記第1及び第2液晶セルは、各々垂直配向及び水平配向状態の間をスイッチングすることができ、
前記水平配向状態で前記第1液晶セルは、前記液晶セルの横軸を基準として時計方向に40度〜50度の範囲内の光軸を有し、前記第2液晶セルは、前記液晶セルの横軸を基準として時計方向に130度〜140度の範囲内の光軸を有する、透過率可変フィルム。 - 第1及び第2ゲストホスト液晶層は、各々液晶及び異方性染料を含む、請求項1に記載の透過率可変フィルム。
- 前記液晶は、誘電率異方性が負数である、請求項2に記載の透過率可変フィルム。
- 第1または第2ゲストホスト液晶層の異方性度(R)が0.5以上である、請求項1から3のいずれか一項に記載の透過率可変フィルム。
- 前記第1液晶セルは、第1垂直配向膜、第1ゲストホスト液晶層及び第2垂直配向膜を順に含み、前記第2液晶セルは、第3垂直配向膜、第2ゲストホスト液晶層及び第4垂直配向膜を順に含む、請求項1から4のいずれか一項に記載の透過率可変フィルム。
- 前記第1〜第4垂直配向膜は、プレチルト角が70度〜89度の範囲内であり、前記第1及び第2垂直配向膜のプレチルト方向は、液晶セルの横軸方向を基準として時計方向に各々40度〜50度の範囲内であり、前記第3及び第4垂直配向膜のプレチルト方向は、液晶セルの横軸方向を基準として時計方向に各々130度〜140度の範囲内である、請求項5に記載の透過率可変フィルム。
- 前記第1及び第2垂直配向膜のプレチルト角のうちいずれか一つは、前記配向膜と水平な方向を基準として時計方向で測定した角度であり、他の一つは、前記配向膜と水平な方向を基準として反時計方向で測定した角度であり、前記第3及び第4垂直配向膜のプレチルト角のうちいずれか一つは、前記配向膜と水平な方向を基準として時計方向で測定した角度であり、他の一つは、前記配向膜と水平な方向を基準として反時計方向で測定した角度である、請求項6に記載の透過率可変フィルム。
- 第1〜第4垂直配向膜の外側に配置された電極フィルムをさらに含む、請求項5から7のいずれか一項に記載の透過率可変フィルム。
- 前記第1及び第2液晶セルは、互いに合着された状態で存在する、請求項1から8のいずれか一項に記載の透過率可変フィルム。
- 左眼用レンズと右眼用レンズ;及び前記左眼用レンズと右眼用レンズを支持するフレームを含むアイウェアであって、
前記左眼用レンズ及び右眼用レンズは、各々請求項1に記載の透過率可変フィルムを含み、
前記フレームは、装着時の観察者の正面視線方向と前記透過率可変フィルム表面の法線が成す角度が15度〜40度の範囲内になるように形成されている、アイウェア。 - 拡張現実体験用機器である、請求項10に記載のアイウェア。
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TWI639860B (zh) | 2018-11-01 |
KR101876986B1 (ko) | 2018-07-11 |
KR20170117893A (ko) | 2017-10-24 |
CN108700702B9 (zh) | 2021-02-02 |
TW201804180A (zh) | 2018-02-01 |
US20190049641A1 (en) | 2019-02-14 |
EP3444646A4 (en) | 2019-04-17 |
EP3444646A1 (en) | 2019-02-20 |
EP3444646B1 (en) | 2023-09-27 |
CN108700702B (zh) | 2021-01-08 |
WO2017179940A1 (ko) | 2017-10-19 |
US10656480B2 (en) | 2020-05-19 |
JP6641586B2 (ja) | 2020-02-05 |
CN108700702A (zh) | 2018-10-23 |
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