JP2009080198A5 - - Google Patents

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JP2009080198A5
JP2009080198A5 JP2007247976A JP2007247976A JP2009080198A5 JP 2009080198 A5 JP2009080198 A5 JP 2009080198A5 JP 2007247976 A JP2007247976 A JP 2007247976A JP 2007247976 A JP2007247976 A JP 2007247976A JP 2009080198 A5 JP2009080198 A5 JP 2009080198A5
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sheet
optical
light absorbing
light
optical sheet
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JP2007247976A
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JP2009080198A (en
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Priority to JP2007247976A priority Critical patent/JP2009080198A/en
Priority claimed from JP2007247976A external-priority patent/JP2009080198A/en
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Publication of JP2009080198A5 publication Critical patent/JP2009080198A5/ja
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Claims (14)

映像光源より観察者側に配置され、該映像光源から出射された光を制御して前記観察者側に出射する複数の層を備える光学シートであって、
前記複数の層のうち少なくとも１層が、光を透過可能にシート面に沿って並列されるプリズム部と、前記プリズム部間に形成され、光を吸収可能であるとともに光の一部は透過する光吸収部と、を有する光学機能シート層とされ、
シート厚方向断面における前記光吸収部の辺のうち、前記光学機能シート層の層面側となる辺の少なくとも一方が前記シート厚方向に曲線又は折れ線状に窪みを有することを特徴とする光学シート。 An optical sheet that is disposed on the viewer side from the video light source, and includes a plurality of layers that control the light emitted from the video light source and emit the light to the viewer side,
At least one of the plurality of layers is formed between the prism portion arranged in parallel along the sheet surface so as to transmit light and the prism portion, and can absorb light and part of the light is transmitted. And an optical functional sheet layer having a light absorbing portion,
Of the sides of the light absorbing portion in the sheet thickness direction cross-section, the optical sheet at least one side comprising a layer surface side of the optical functional sheet layer is characterized by having a recess in the curve or polygonal line in the sheet thickness direction . 前記光吸収部を形成する材料が屈折率Ｎｂであり、前記窪み部分で前記光吸収部に接する部位が屈折率Ｎａであるときに、前記ＮｂとＮａとの間にＮｂ≧Ｎａの関係があることを特徴とする請求項１に記載の光学シート。   When the material forming the light absorbing portion has a refractive index Nb and the portion in contact with the light absorbing portion in the hollow portion has a refractive index Na, there is a relationship of Nb ≧ Na between Nb and Na. The optical sheet according to claim 1. 前記光吸収部は、該光吸収部を構成する材料のみで形成された６μｍ厚さのシートの透過率測定において、透過率が４０〜７０％となるような光吸収性能を有するように構成されていることを特徴とする請求項１又は２に記載の光学シート。   The light absorbing portion is configured to have a light absorbing performance such that the transmittance is 40 to 70% in the transmittance measurement of a sheet having a thickness of 6 μm formed of only the material constituting the light absorbing portion. The optical sheet according to claim 1, wherein the optical sheet is provided. 前記光吸収部の前記窪みを有する辺の長さが、前記光吸収部が並列されるピッチに対して１０〜５０％であることを特徴とする請求項１〜３のいずれか一項に記載の光学シート。   The length of the side which has the said hollow of the said light absorption part is 10 to 50% with respect to the pitch with which the said light absorption part is paralleled, The Claim 1 characterized by the above-mentioned. Optical sheet. シート厚方向断面において、
前記光学機能シート層の前記プリズム部は、一方のシート面側に短い上底、他方のシート面側に長い下底を有する台形であり、
前記光吸収部は前記窪みを有する辺を底辺とする三角形であることを特徴とする請求項１〜４のいずれか一項に記載の光学シート。 In the sheet thickness direction cross section,
The prism portion of the optical function sheet layer is a trapezoid having a short upper base on one sheet surface side and a long lower base on the other sheet surface side,
The optical sheet according to any one of claims 1 to 4, wherein the light absorbing portion is a triangle having a side having the depression as a base. シート厚方向断面において、
前記光学機能シート層の前記プリズム部は、一方のシート面側に短い上底、他方のシート面側に長い下底を有する台形であり、
前記光吸収部は前記窪みを有する辺を長い下底、前記他方のシート面側に短い上底を具備する台形であることを特徴とする請求項１〜４のいずれか一項に記載の光学シート。 In the sheet thickness direction cross section,
The prism portion of the optical function sheet layer is a trapezoid having a short upper base on one sheet surface side and a long lower base on the other sheet surface side,
5. The optical device according to claim 1, wherein the light absorbing portion has a trapezoidal shape having a long lower base on the side having the depression and a short upper base on the other sheet surface side. Sheet. 前記プリズム部の前記上底と前記下底との間に具備される前記台形の斜辺がシート面の法線に対して０度より大きく１０度以下であることを特徴とする請求項５又は６に記載の光学シート。   The trapezoidal hypotenuse provided between the upper base and the lower base of the prism portion is greater than 0 degree and less than or equal to 10 degrees with respect to the normal of the sheet surface. The optical sheet according to 1. 前記プリズム部の前記上底と前記下底との間に具備される前記台形の斜辺が折れ線状、又は曲線からなることを特徴とする請求項５〜７のいずれか一項に記載の光学シート。   The optical sheet according to any one of claims 5 to 7, wherein a hypotenuse of the trapezoid formed between the upper base and the lower base of the prism portion is a polygonal line or a curved line. . 前記光吸収部に平均粒径が１μｍ以上の光吸収粒子を含有することを特徴とする請求項１〜８のいずれか一項に記載の光学シート。   The optical sheet according to claim 1, wherein the light absorbing portion contains light absorbing particles having an average particle diameter of 1 μm or more. 前記プリズム部を形成する材料が屈折率Ｎｐであり、前記光吸収部を形成する材料が屈折率Ｎｂであるときに、前記ＮｐとＮｂとの間にＮｐ≧Ｎｂの関係があるとともに、該Ｎｐ及びＮｂが１．４９〜１．５６の値であることを特徴とする請求項１〜９のいずれか一項に記載の光学シート。   When the material forming the prism portion has a refractive index Np and the material forming the light absorbing portion has a refractive index Nb, there is a relationship of Np ≧ Nb between the Np and Nb, and the Np Nb is a value of 1.49-1.56, The optical sheet as described in any one of Claims 1-9 characterized by the above-mentioned. 前記光学機能シート層の前記プリズム部及び前記光吸収部が所定の断面を有して長手方向に延在して形成されるとともに、前記光学機能シート層が２層積層され、該２層の光学機能シート層の前記長手方向が一方と他方とで直交するように積層されることを特徴とする請求項１〜１０のいずれか一項に記載の光学シート。   The prism portion and the light absorbing portion of the optical function sheet layer are formed to have a predetermined cross section and extend in the longitudinal direction, and the two optical function sheet layers are laminated. The optical sheet according to any one of claims 1 to 10, wherein the functional sheet layer is laminated so that the longitudinal direction is perpendicular to one and the other. 前記窪みが一方のシート面側に露出して配置されていることを特徴とする請求項１〜１１のいずれか一項に記載の光学シート。   The optical sheet according to any one of claims 1 to 11, wherein the recess is disposed so as to be exposed on one sheet surface side. 請求項１〜１２のいずれか一項に記載の光学シートにさらに電磁波シールド、調色、反射防止、及び防眩から選ばれる少なくとも１つの作用を有する層が積層されることを特徴とする光学シート。   The optical sheet according to any one of claims 1 to 12, further comprising a layer having at least one action selected from electromagnetic wave shielding, toning, antireflection, and antiglare. . 請求項１〜１３のいずれか一項に記載の光学シートが備えられ、前記窪みの最も深い部位が観察者側となるように前記光学シートが配置されることを特徴とする表示装置。 The optical sheet is provided according to any one of claims 1 to 13, a display device, characterized in that the optical sheet is disposed so as deepest portion of the recess is the observer side.
JP2007247976A 2007-09-25 2007-09-25 Optical sheet and display device with the same Withdrawn JP2009080198A (en)

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JP2012032790A Division JP5035482B2 (en) 2012-02-17 2012-02-17 Optical sheet and display device including the optical sheet

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JP2009080198A5 true JP2009080198A5 (en) 2010-11-11

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JP5573394B2 (en) 2009-07-06 2014-08-20 大日本印刷株式会社 Optical sheet manufacturing method, optical sheet, and image display device
JP2011075768A (en) * 2009-09-30 2011-04-14 Dainippon Printing Co Ltd Optical sheet and image display device
US9563004B2 (en) 2009-10-27 2017-02-07 Dai Nippon Printing Co., Ltd. Image source unit and image display unit
US9244204B2 (en) * 2009-10-27 2016-01-26 Dai Nippon Printing Co., Ltd. Image source unit and image display unit
JP2011150327A (en) * 2009-12-25 2011-08-04 Dainippon Printing Co Ltd Optical sheet and display device provided with optical sheet
JP5769040B2 (en) * 2010-02-03 2015-08-26 大日本印刷株式会社 Manufacturing method of visibility improving sheet
JP5485834B2 (en) * 2010-09-01 2014-05-07 スリーエム イノベイティブ プロパティズ カンパニー Image display device manufacturing method and image display device manufacturing apparatus
JP5672948B2 (en) * 2010-10-25 2015-02-18 大日本印刷株式会社 Optical filter and image display device
JP5685900B2 (en) * 2010-11-19 2015-03-18 大日本印刷株式会社 Optical sheet and image display device
JP2012163835A (en) * 2011-02-08 2012-08-30 Dainippon Printing Co Ltd Manufacturing method of optical sheet and manufacturing method of display device
JP5741161B2 (en) * 2011-04-08 2015-07-01 大日本印刷株式会社 Method for producing optical sheet having adhesive layer in contact with microlouver layer
JP5029789B2 (en) * 2012-02-17 2012-09-19 大日本印刷株式会社 Optical sheet and display device including the optical sheet
JP5035482B2 (en) * 2012-02-17 2012-09-26 大日本印刷株式会社 Optical sheet and display device including the optical sheet
JP2014002927A (en) * 2012-06-19 2014-01-09 Dainippon Printing Co Ltd Display device
JP5910644B2 (en) * 2014-01-27 2016-04-27 大日本印刷株式会社 Daylighting film and method for manufacturing daylighting film
JP2014160262A (en) * 2014-04-04 2014-09-04 Dainippon Printing Co Ltd Image display device

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JP5027969B2 (en) * 2001-08-27 2012-09-19 大日本印刷株式会社 Manufacturing method of two-dimensional field expansion member
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