JP2009015297A - 可変厚さを有する光方向転換フィルム - Google Patents
可変厚さを有する光方向転換フィルム Download PDFInfo
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- JP2009015297A JP2009015297A JP2008055190A JP2008055190A JP2009015297A JP 2009015297 A JP2009015297 A JP 2009015297A JP 2008055190 A JP2008055190 A JP 2008055190A JP 2008055190 A JP2008055190 A JP 2008055190A JP 2009015297 A JP2009015297 A JP 2009015297A
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Classifications
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- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
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- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
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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
- G02F1/133—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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Optical Elements Other Than Lenses (AREA)
- Liquid Crystal (AREA)
Abstract
【解決手段】光源及び光方向転換ポリマーフィルムを備え、前記フィルムが該フィルムの少なくとも一面に構造化表面を含み、該構造化表面の少なくとも一部にポリマーコーティングを有するディスプレーであって、前記コーティングが可変厚さを示すディスプレー。
【選択図】なし
Description
1)軸上画像品質の損失を最小にするために、コーティングされていない基準フィルムに対する光学利得は、少なくとも90%であることが好ましい(図5の点504)。
2)軸外輝度を大幅に改善するために、水平走査方向の60度及び垂直走査方向の40度における軸外利得改善は、基準フィルムの少なくとも130%であることが好ましい(それぞれ点503及び点505)。
3)角度位置の僅かな変化の結果として認識される輝度損失を最小にするために、角度の関数としての輝度利得の変化(一次導関数の絶対値)は、水平走査方向の軸外+/−60度及び垂直走査方向の+/−40度の角度まで、水平及び垂直走査方向において、それぞれ0.08cd/m2/度及び0.08cd/m2/度以下である。
103 材料
105 パターン化ローラ
107 圧力ローラ
109 ベース層
111 剥離ローラ
113 層
501 従来のプリズム形フィルムに関する利得曲線
502 本発明の材料に関する利得曲線
503 水平基準点(−60゜)
504 0゜における従来の利得
505 垂直基準点(+40゜)
601 曲線501(従来)の一次導関数
602 曲線502(本発明)の一次導関数
Claims (10)
- 光源及び光方向転換ポリマーフィルムを備え、前記フィルムが該フィルムの少なくとも一面に構造化表面を含み、該構造化表面の少なくとも一部にポリマーコーティングを有するディスプレーであって、前記コーティングが可変厚さを示すディスプレー。
- 前記ポリマーフィルムが、前記フィルムの反対側に構造化表面を有する、請求項1記載のディスプレー。
- 前記ポリマーコーティングの最大厚さが、0.7から5.0マイクロメートルである、請求項1記載のディスプレー。
- 前記可変厚さが、前記ポリマーコーティングの最大厚さの少なくとも50%の厚さ範囲を有する、請求項1記載のディスプレー。
- 前記可変厚さが、前記構造化表面上で単調に増加または減少している、請求項1記載のディスプレー。
- 前記ポリマーコーティングが、ポリウレタン、ポリビニルアルコール、アクリルおよびPVP樹脂からなる群から選択される、請求項1記載のディスプレー。
- 前記ポリマーコーティングが、パターンの形で前記ポリマーフィルム上に存在する、請求項1記載のディスプレー。
- 前記ポリマーコーティングが、パターンの形で前記構造化表面上に存在する、請求項1記載のディスプレー。
- 前記ポリマーコーティングが、前記ポリマーコーティングと前記ポリマービーズとの間に0.02から0.50の屈折率差を有するポリマービーズをさらに含む、請求項1記載のディスプレー。
- 光源と、少なくとも一面に構造化表面を有する光方向転換ポリマーフィルムとを備えるディスプレーであって、前記ポリマーフィルムが、水平方向に0.03から0.09の最大一次導関数を有し、垂直方向に0.04から0.09の最大一次導関数を有するディスプレー。
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US11/682,329 US7543974B2 (en) | 2007-03-06 | 2007-03-06 | Light redirecting film having variable thickness |
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US (1) | US7543974B2 (ja) |
EP (1) | EP1967870A1 (ja) |
JP (1) | JP2009015297A (ja) |
KR (1) | KR20080081867A (ja) |
CN (1) | CN101276101A (ja) |
TW (1) | TWI374295B (ja) |
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US7543974B2 (en) | 2009-06-09 |
TW200848806A (en) | 2008-12-16 |
CN101276101A (zh) | 2008-10-01 |
KR20080081867A (ko) | 2008-09-10 |
US20080219027A1 (en) | 2008-09-11 |
EP1967870A1 (en) | 2008-09-10 |
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