JP2021530751A - 視野角補償フィルムの製造方法、偏光板の製造方法、視野角補償フィルム、偏光板およびこれを含むディスプレイ装置 - Google Patents
視野角補償フィルムの製造方法、偏光板の製造方法、視野角補償フィルム、偏光板およびこれを含むディスプレイ装置 Download PDFInfo
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Images
Classifications
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- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
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- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29D11/00644—Production of filters polarizing
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
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- B29D11/0074—Production of other optical elements not provided for in B29D11/00009- B29D11/0073
- B29D11/00788—Producing optical films
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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
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
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- Ophthalmology & Optometry (AREA)
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- Crystallography & Structural Chemistry (AREA)
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Abstract
Description
<実験例1>
実施例1.
基材に平坦面を含む第1面と、第1面に対向する第2面とを含むパターン層を形成して視野角補償フィルムを製造した。
上記実施例1において、本発明の視野角補償フィルムを含まないように設定したことを除けば、実施例1と同様にシミュレーションを進行させた。その結果をそれぞれ下記表1に示した。
上記実施例1において、第1傾斜面および第2傾斜面のなす角度(θ)を90゜に設定したことを除けば、実施例1と同様にシミュレーションを進行させた。その結果をそれぞれ下記表1と図16〜図18に示した。
実施例2.
チオビスフェノールエチレンオキシド10モル部がジアクリレート(Hannong化成)55重量部、ビスフェノールAエチレンオキシド10モル部がジアクリレート(Hannong化成)10重量部、ビスフェノールA型エポキシアクリレートオリゴマー(SK−Cytec)10重量部、トリメチロールプロパンエチレンオキシド6モル部がトリ(メタ)アクリレート(Miwon商事)3重量部、o−フェニルフェノキシエチルアクリレート(NK−ESTER)17重量部、1−ヒドロキシシクロヘキシルフェニルケトン(チバガイギー)3.8重量部、ビス(2,4,6−トリメチルベンゾイル)−フェニルホスフィンオキシド(チバガイギー)1重量部、および反応型シリコン(チバガイギー)0.2重量部を組み合わせてパターン層形成用コーティング組成物を製造した。
上記実施例2において、本発明の視野角補償フィルムを含まないことを除けば、実施例2と同様にディスプレイ装置を製造した。
上記実施例2において、第1傾斜面および第2傾斜面のなす角度(θ)が約42゜である金型の代わりに、θ値が約90゜である金型を用いたことを除けば、実施例2と同様にディスプレイ装置を製造した。
上記実施例2、比較例3および比較例4で製造されたディスプレイ装置の明暗比(C/R、Contrast Ratio)分布を測定し、その結果をそれぞれ下記表2に示した。
Eldim社のEZContrast xl88装置を用いて、パネルのon/off状態における(White/Blackモード)での視野角分布を測定してCR%(Area A*CR)値を計算し、下記表2および図19〜図21に示した。
実施例3.
基材にインプリント方法を利用してパターン層を形成することにより、視野角補償フィルムを製造した。この時、上記パターン層は、平坦面を含む第1面と、第1面に対向する第2面とを含む。
上記実施例3において、本発明の視野角補償フィルムを含まないことを除けば、実施例3と同様にディスプレイ装置を製造した。
上記第1傾斜面および第2傾斜面のなす角度(θ)が90度であり、上記第1傾斜面と水平をなす角度(θ1)、および上記第2傾斜面と水平をなす角度(θ2)が同一に45度であることを除けば、実施例3と同様の方法で視野角補償フィルムを製造した。すなわち、上記突出部は二等辺三角形の形状であった。
上記第1傾斜面および第2傾斜面のなす角度(θ)が80度であり、上記第1傾斜面と水平をなす角度(θ1)、および上記第2傾斜面と水平をなす角度(θ2)が同一に50℃であることを除けば、実施例3と同様の方法で視野角補償フィルムを製造した。すなわち、上記突出部は二等辺三角形の形状であった。
上記第1傾斜面および第2傾斜面のなす角度(θ)が70度であり、上記第1傾斜面と水平をなす角度(θ1)、および上記第2傾斜面と水平をなす角度(θ2)が同一に55度であることを除けば、実施例3と同様の方法で視野角補償フィルムを製造した。すなわち、上記突出部は二等辺三角形の形状であった。
上記第1傾斜面および第2傾斜面のなす角度(θ)が60度であり、上記第1傾斜面と水平をなす角度(θ1)、および上記第2傾斜面と水平をなす角度(θ2)が同一に60度であることを除けば、実施例3と同様の方法で視野角補償フィルムを製造した。すなわち、上記突出部は正三角形の形状であった。
上記実施例3、比較例5〜比較例9で製造されたディスプレイ装置の明暗比(C/R、Contrast Ratio)分布を測定し、その結果をそれぞれ下記表3に示した。
Zemax装置を用いて、パネルのon/off状態における(White/Blackモード)での視野角分布を測定してCR%(Area A*CR)値を計算し、その結果を下記表3および図22〜図27に示した。
11:パターン層
101:コーティング層
102:基材
103:パターン層
104:粘着剤または接着剤
105:平坦層
201:保護フィルム1
202:接着層1
203:偏光子(PVA)
204:接着層2
205:保護フィルム2
206:液晶
207:粘着層1
208:液晶セル
209:粘着層2
210:保護フィルム3
211:偏光子(PVA)
212:接着層3
213:保護フィルム4
214:接着層4
215:表面処理コーティング層
301:視野角補償フィルム
302:偏光板
Claims (12)
- 基材を用意するステップと、
前記基材上にパターン層を形成するステップとを含み、
前記パターン層は、平坦面を含む第1面と、前記第1面に対向する第2面とを含み、
前記第2面は、複数の突出部を含み、
前記突出部はそれぞれ、第1傾斜面および第2傾斜面を含み、前記第1傾斜面および第2傾斜面のなす角度(θ)が20゜〜60゜である視野角補償フィルムの製造方法。 - 前記突出部は、非対称構造の断面を有するものである、請求項1に記載の視野角補償フィルムの製造方法。
- 前記突出部の前記第1傾斜面と水平をなす角度(θ1)と、前記第2傾斜面と水平をなす角度(θ2)との差は、30度〜70度の範囲内である、請求項1または2に記載の視野角補償フィルムの製造方法。
- 前記パターン層を形成するステップは、インプリント方法で形成されるものである、請求項1〜3のいずれか一項に記載の視野角補償フィルムの製造方法。
- 前記パターン層の第2面上に平坦層を形成するステップをさらに含むものである、請求項1〜4のいずれか一項に記載の視野角補償フィルムの製造方法。
- 前記平坦層を形成するステップは、インプリント方法で形成されるものである、請求項5に記載の視野角補償フィルムの製造方法。
- 前記平坦層は、紫外線硬化型樹脂を含むものである、請求項5または6に記載の視野角補償フィルムの製造方法。
- 前記第1面に垂直な少なくとも1つの断面が三角形または四角形の形状である、請求項1〜7のいずれか一項に記載の視野角補償フィルムの製造方法。
- 偏光子を用意するステップと、
前記偏光子の少なくとも一面に、請求項1〜8のいずれか1項に記載の製造方法により製造された視野角補償フィルムを貼り合わせるステップとを含み、
前記視野角補償フィルムを貼り合わせるステップは、
前記視野角補償フィルムのパターン層の第2面側上に粘着剤または接着剤を塗布するステップと、
前記視野角補償フィルムを乾燥するステップと、
前記粘着剤または接着剤が塗布された面を偏光子の一面に付着させるステップとを含む偏光板の製造方法。 - 基材と、前記基材上に形成されたパターン層とを含み、
前記パターン層は、平坦面を含む第1面と、前記第1面に対向する第2面とを含み、
前記第2面は、複数の突出部を含み、
前記突出部はそれぞれ、第1傾斜面および第2傾斜面を含み、前記第1傾斜面および第2傾斜面のなす角度(θ)が20゜〜60゜である視野角補償フィルム。 - 偏光子と、
前記偏光子の一面に備えられた、請求項10に記載の視野角補償フィルムとを含む偏光板。 - 請求項11に記載の偏光板を含むディスプレイ装置。
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