JP6580696B2 - 表示素子 - Google Patents
表示素子 Download PDFInfo
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- JP6580696B2 JP6580696B2 JP2017543966A JP2017543966A JP6580696B2 JP 6580696 B2 JP6580696 B2 JP 6580696B2 JP 2017543966 A JP2017543966 A JP 2017543966A JP 2017543966 A JP2017543966 A JP 2017543966A JP 6580696 B2 JP6580696 B2 JP 6580696B2
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- vertical alignment
- substrate
- adhesive layer
- display element
- liquid crystal
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/01—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
- G02F1/13—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
- 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
- G02F1/13781—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 using smectic liquid crystals
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/01—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
- G02F1/13—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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133377—Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel
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- G—PHYSICS
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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
- G02F1/01—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
- G02F1/13—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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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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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- G02F1/01—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
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- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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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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- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
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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
- G02F1/01—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
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- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
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- G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
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- G02F2202/36—Micro- or nanomaterials
Description
具体的に、図1には、第1基板100と第2基板200との間に位置する中問層300を含む表示素子が開示されている。また、表示素子は、前記第1基板100及び第2基板200のセルギャップを維持させる役目を行う隔壁パターン400をさらに含むことができる。
前記基材層は、表示素子に適用され得る公知の素材が制限なしに利用され得る。一つの例示で、基材層は、フィルム形態のものを使用できる。
前記垂直配向接着剤層は、第1基板及び第2基板の結着時、二つの基板に適切な接着性を付与し、表示素子の耐久性を確保する役目を行うと同時に、中問層に存在する物質に垂直配向特性を付与し、表示素子が全体的に垂直配向駆動特性を有するようにすることができる。
具体的に、前記機能性ナノ粒子は、ITOナノ粒子、Agナノワイヤ、又はシリカナノ粒子等が例示され得るが、これに制限されるものではない。
Gix100≦GN≦1x1010S/m
Cix1.5≦CN≦50
一つの例示で、液晶化合物は、例えば配向がスイッチング可能な状態で存在し得る。前記用語「配向がスイッチング可能である」というのは、液晶化合物の整列方向が外部作用によって変更され得ることを意味する。
本出願で用語「メゾゲン化合物」は、メゾゲン構造を有する化合物を意味し、用語「メゾゲン」は、結晶において構造的整列(structural order)を誘導できる構造を意味し、前記メゾゲンの範疇には、通常、液晶化合物において分子の所定方向への整列を誘導できるものと知られたすべての種類の剛性構造(rigid structure)が含まれることができる。
すなわち、表示素子の駆動方式が高分子マトリックス内の液晶を分散させて具現されるいわゆるPDLC(Polymer Dispersed Liquid Crystal)素子の場合、液晶層は、高分子ネットワーク及び前記高分子ネットワークに分散している液晶化合物を含むことができる。
すなわち、図2に示されたように、液晶層500は、その両面にそれぞれ垂直配向性接着剤層700及び垂直配向膜800と当接していて、液晶層500内の液晶化合物を垂直配向させていてもよい。
光変調層が電気変色物質層である場合、前記電気変色物質層には、電気変色(electro chromic)物質を含むことができる。
光変調層が電気泳動物質層である場合、前記電気泳動物質層には、電気泳動(electro phoretic)物質を含むことができる。
Gix100≦GN≦1x1010S/m
Cix1.5≦CN≦50
したがって、本出願による表示素子の製造方法は、第1基板と第2基板との間に位置する中問層を形成する段階をさらに含むことができる。
前記ディスプレイ装置の種類は、スマートウィンドウ、ウィンドウ保護膜、フレキシブルディスプレイ素子、3D映像表示用アクティブリターダ(active retarder)又は視野角調節フィルム等が例示され得るが、これに制限されるものではない。
支持体に対して、20mmx100mmのサイズにカットされた接着剤層を付着させた後、物性分析機(Texture Analyzer、TA)を利用して90゜の剥離角度及び0.3m/minの剥離速度で剥離強度(単位、N/cm)を測定した。
ITO電極層を含む一対の基板の間に本出願の実施例及び比較例による垂直配向接着剤層を含ませて単位セルを製作した後、LCR meter(1KHz測定基準)で電気伝導度(単位、S)を測定し、下記数式3に基づいてS/m単位の電気伝導度の値を算出した。
Gxd/(xXy)[S/m]
ITO電極層を含む一対の基板の間に本出願の実施例及び比較例による垂直配向接着剤層を含ませて単位セルを製作した後、LCR meter(1KHz測定基準)で静電容量(Capacitance、単位:F)を測定し、下記数式4に基づいて誘電定数値を算出した。
Cx(1/ε0)xd/(xXy)
実施例及び比較例による表示素子の0Vから徐々に電圧を増加させながら、ヘイズ値の変化をヘイズメーターを利用して観察し、且つ、前記ヘイズ値がこれ以上変化しないときの電圧を飽和電圧とし、駆動電圧を測定した。
ITO(Indium Tin Oxide)透明電極層が蒸着されたPET(Polyethylene terephthalate)フィルム(100mmx100mm)(以下、第1基板)のITO層上にPSA type Silicon Adhesive−1(7657 adhesive、Dow−corning社)及び全体固形分に対して50重量部のITOナノ粒子(ANP社)を含む混合物を15μmの厚みでコーティングした後、130℃で5分間オーブンで熱処理し、垂直配向接着剤層を形成した。引き続いて、ITO(Indium Tin Oxide)透明電極層が蒸着されたPET(Polyethylene terephthalateフィルム(100mmx100mm)(以下、第2基板)のITO層上にポリエステル系アクリレート重合体を使用してインプリンティング方式でHoneycombo typeの隔壁パターンを形成した(隔壁間隔250μm、幅20μm及び厚み15μm、面積比30%)。引き続いて、隔壁パターンが形成された第2基板上に垂直配向膜(垂直配向膜5661、Nissan chemical社)を200nmの厚みでコーティングした後、液晶化合物(HCM009、HCCH社)、異方性染料(X12、BASF社)及びMAT−13−1422(屈折率異方性:0.153、誘電率異方性:−5.0、Merk社)を液晶化合物:異方性染料:MAT−13−1422=10:0.3:90の重量比率で混合したDye−LC組成物をコーティングし、DSM(Dynamic scattering mode)の液晶層を形成した。引き続いて、PSA type Silicon Adhesive−1が隔壁パターンに接着されるように、第1基板を第2基板に結着し、表示素子を製造した。実施例1による垂直配向接着剤層の電気伝導度の値、誘電定数値及び剥離強度と表示素子の駆動電圧を表1に示した。
PSA type Silicon Adhesive−1(7657 adhesive、Dow−corning社)及び全体固形分100重量部に対して20重量部のITOナノ粒子(ANP社)を含む混合物を利用して垂直配向接着剤層を形成したことを除いて、実施例1と同一の方式で表示素子を製造した。実施例2による垂直配向接着剤層の電気伝導度の値、誘電定数値及び剥離強度と表示素子の駆動電圧を表1に示した。
PSA type Silicon Adhesive−1(7657 adhesive、Dow−corning社)及び全体固形分100重量部に対して50重量部のシリカナノ粒子(Nissan chemical社)を含む混合物を利用して垂直配向接着剤層を形成したことを除いて、実施例1と同一の方式で表示素子を製造した。実施例2による垂直配向接着剤層の電気伝導度の値、誘電定数値及び剥離強度と表示素子の駆動電圧を表1に示した。
PSA type Silicon Adhesive−1(7657 adhesive、Dow−corning社)及び全体固形分100重量部に対して20重量部のシリカナノ粒子(Nissan chemical社)を含む混合物を利用して垂直配向接着剤層を形成したことを除いて、実施例1と同一の方式で表示素子を製造した。実施例3による垂直配向接着剤層の誘電定数値及び剥離強度と表示素子の駆動電圧を表1に示した。
PSA type Silicon Adhesive−1(7657 adhesive、Dow−corning社)を利用して厚みが15μmであり、機能性粒子を含まない垂直配向性を有する接着剤層を形成したことを除いて、実施例1と同一の方式で表示素子を製造した。比較例1による垂直配向接着剤層の電気伝導度の値、誘電定数値及び剥離強度と表示素子の駆動電圧を表1に示した。
垂直配向接着剤層の厚みを25μmにしたことを除いて、比較例1と同一の方式で表示素子を製造した。比較例2による垂直配向接着剤層の電気伝導度の値、誘電定数値及び剥離強度と表示素子の駆動電圧を表1に示した。
垂直配向接着剤層の厚みを5μmにしたことを除いて、比較例1と同一の方式で表示素子を製造した。比較例3による垂直配向接着剤層の誘電定数値及び剥離強度と表示素子の駆動電圧を表1に示した。
機能性粒子の種類及び配合倍率を調節し、電気伝導度の値が6.2x10−7S/mを有する垂直配向接着剤層を形成したことを除いて、実施例1と同一の方式で表示素子を製造した。比較例4による垂直配向接着剤層の電気伝導度の値及び剥離強度と表示素子の駆動電圧を表1に示した。
全体固形分に対してITOナノ粒子(ANP社)70重量部を含む混合物を利用して垂直配向接着剤層を形成したことを除いて、実施例1と同一の方式で表示素子を製造した。比較例5による垂直配向接着剤層の電気伝導度の値及び剥離強度と表示素子の駆動電圧を表1に示した。
機能性粒子の種類及び含量を調節し、垂直配向接着剤層の誘電定数値を3.1にしたことを除いて、実施例と同一の方式で表示素子を製造した。比較例6による垂直配向接着剤層の誘電定数値及び剥離強度と表示素子の駆動電圧を表1に示した。
200 第2基板
101、201 基材層
102、202 電極層
300 中問層
400、600 隔壁パターン
500 液晶層
700 垂直配向接着剤層
800 垂直配向膜
Claims (14)
- 第1基板と、
前記第1基板と対向して配置されている第2基板と、
前記第1基板と前記第2基板との間の隔壁パターンと、
前記第1基板と第2基板との間に位置し、液晶化合物を含む液晶層である中問層と、を含む表示素子において、
前記第1基板又は第2基板を前記隔壁パターンに接着させ、伝導性ナノ粒子又は誘電性ナノ粒子である機能性ナノ粒子を含む垂直配向接着剤層を含み、
前記垂直配向接着剤層は、硬化性シリコーン化合物を含む組成物の硬化物である垂直配向性シリコーン系接着剤を含むことを特徴とする表示素子。 - 接着剤層は、機能性ナノ粒子を0.005重量%〜60重量%の比率で含む、請求項1に記載の表示素子。
- 伝導性粒子は、電気伝導度が1.0x101S/m以上である、請求項1に記載の表示素子。
- 機能性ナノ粒子は、球形ナノ粒子、ナノチューブ、ナノワイヤ、ナノロッド又はナノリング形状を有する、請求項1に記載の表示素子。
- 垂直配向接着剤層は、下記数式1を満足するように機能性ナノ粒子を含む、請求項1に記載の表示素子:
[数式1]
Gix100≦GN≦1x1010S/m
前記数式1で、GNは、機能性ナノ粒子を含む垂直配向接着剤層の電気伝導度の値(S/m)を示し、Giは、機能性ナノ粒子を含まない垂直配向接着剤層の電気伝導度の値(S/m)を示す。 - 垂直配向接着剤層は、下記数式2を満足するように機能性ナノ粒子を含む、請求項1に記載の表示素子:
[数式2]
Cix1.5≦CN≦50
前記数式1で、CNは、機能性ナノ粒子を含む接着剤層の誘電定数値を示し、Ciは、機能性ナノ粒子を含まない接着剤層の誘電定数値を示す。 - 垂直配向接着剤層は、厚みが0.1μm〜100μm範囲内にある、請求項1に記載の表示素子。
- 第1基板と第2基板との間に垂直配向膜をさらに含み、前記垂直配向膜は、液晶層と当接し、前記液晶層内の液晶化合物を垂直配向させる、請求項1に記載の表示素子。
- 第1基板と、前記第1基板と対向して配置されている第2基板と、前記第1基板と前記第2基板との間の隔壁パターンと、前記第1基板と第2基板との間に位置し、液晶化合物を含む液晶層である中問層と、を含む表示素子の製造方法において、
伝導性ナノ粒子又は誘電性ナノ粒子である機能性ナノ粒子を含む垂直配向接着剤層により、互いに対向して配置されている前記第1基板又は第2基板を前記隔壁パターンに結着する段階を含み、
前記垂直配向接着剤層は、硬化性シリコーン化合物を含む組成物の硬化物である垂直配向性シリコーン系接着剤を含む、表示素子の製造方法。 - 垂直配向接着剤層は、下記数式1を満足するように機能性ナノ粒子を含む、請求項9に記載の表示素子の製造方法:
[数式1]
Gix100≦GN≦1x1010S/m
前記数式1で、GNは、機能性ナノ粒子を含む垂直配向接着剤層の電気伝導度の値(S/m)を示し、Giは、機能性ナノ粒子を含まない垂直配向接着剤層の電気伝導度の値(S/m)を示す。 - 垂直配向接着剤層は、下記数式2を満足するように機能性ナノ粒子を含む、請求項9に記載の表示素子の製造方法:
[数式2]
Cix1.5≦CN≦50
前記数式1で、CNは、機能性ナノ粒子を含む垂直配向接着剤層の誘電定数値を示し、Ciは、機能性ナノ粒子を含まない垂直配向接着剤層の誘電定数値を示す。 - 垂直配向接着剤層は、機能性ナノ粒子を0.005重量%〜60重量%の比率で含む、請求項9に記載の表示素子の製造方法。
- 請求項1に記載の表示素子を含むディスプレイ装置。
- ディスプレイ装置は、液晶表示装置(Liquid Crystal Display device;LCD)である、請求項13に記載のディスプレイ装置。
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JP2008102260A (ja) * | 2006-10-18 | 2008-05-01 | Jsr Corp | 液晶配向剤および液晶表示素子 |
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JP2011154202A (ja) * | 2010-01-27 | 2011-08-11 | Mitsubishi Pencil Co Ltd | 電気泳動表示媒体及びその製造方法 |
KR101311876B1 (ko) * | 2012-01-11 | 2013-09-26 | 주식회사 나노솔루션 | 유리용 전도성 코팅액 조성물 및 이의 제조방법 |
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CN105247013B (zh) | 2013-07-12 | 2017-10-03 | 株式会社Lg化学 | 液晶盒 |
KR102081602B1 (ko) | 2013-11-13 | 2020-04-14 | 엘지디스플레이 주식회사 | 투명표시장치 |
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