公开(公告)号：US20150369972A1

公开(公告)日：2015-12-24

申请号：US14762886

申请日：2014-01-28

Applicant: Sharp Kabushiki Kaisha

Inventor： Yasushi Asaoka ,  Tsuyoshi Maeda ,  Emi Yamamoto ,  Toru Kanno ,  Shohei Katsuta

IPC: G02B5/02 ,  G02F1/1335 ,  G03F7/20 ,  G02B5/30

CPC classification number: G02B5/0257 ,  G02B5/00 ,  G02B5/02 ,  G02B5/0247 ,  G02B5/0294 ,  G02B5/3033 ,  G02F1/1335 ,  G02F1/133504 ,  G02F1/133512 ,  G02F1/133524 ,  G03F7/20 ,  Y10T156/1052

Abstract: The light diffusion member includes a substrate having light transmissivity, a plurality of light shielding layers, and light diffusion portions. The light diffusion portions have a light-emitting end surface, a light incident end surface which has a larger area than the area of the light-emitting end surface, and a reflecting face. Light which enters from the light incident end surface is anisotropically diffused in an azimuth direction seen from a normal direction of the substrate, and the height from the light incident end surface to the light-emitting end surface of the light diffusion portion is configured to be greater than the thickness of the light shielding layers. The azimuth direction where the diffusion by the light diffusion portion is relatively strong, and any one side making up the outer shape of the substrate, are generally parallel. The planar shape of the light shielding layers seen from the normal direction of one face of the substrate is an anisotropic shape having at least a major axis and a minor axis. A hollow portion sectioned by the formation regions of the light diffusion portions is formed in the formation region of the light shielding layers, and air is present in the hollow portion.

Abstract translation: 光扩散构件包括具有透光性的基板，多个遮光层和光扩散部。 光扩散部具有发光端面，具有比发光端面的面积大的面积的光入射端面和反射面。 从光入射端面入射的光在从基板的法线方向观察的方位角方向上各向异性地扩散，从光入射端面到光扩散部的发光端面的高度为 大于遮光层的厚度。 通过光扩散部的扩散比较强的方位角方向，以及构成基板的外形的任何一个面大致平行。 从衬底的一个面的法线方向观察的遮光层的平面形状是至少具有长轴和短轴的各向异性形状。 在遮光层的形成区域中形成由光扩散部的形成区域分割的中空部，空心部存在空气。

公开(公告)号：US20150062492A1

公开(公告)日：2015-03-05

申请号：US14394551

申请日：2013-04-08

Applicant: Sharp Kabushiki Kaisha

Inventor： Emi Yamamoto ,  Toru Kanno ,  Tsuyoshi Maeda

IPC: G02B5/02 ,  G02B5/00 ,  G02F1/1335

CPC classification number: G02B5/0221 ,  G02B5/001 ,  G02B5/003 ,  G02B5/0278 ,  G02F1/133504 ,  G02F1/133524

Abstract: A light control film (light control member) includes a light transmissive base, a plurality of light shielding portions scattered over one surface of the base, and a light diffusing portion formed on the one surface of the base in a region other than regions in which the light shielding portions are formed. The light diffusing portion has a light exit end face and a light incident end face having a larger area than the light exit end face, and the height of the light diffusing portion is greater than the thickness of the light shielding portions. At least part of the opening of at least some of a plurality of air-cavities has a protrusion which is formed of a portion of the light diffusing portion that projects toward the inner side of the opening.

Abstract translation: 光控制膜（光控制构件）包括透光基底，散布在基底的一个表面上的多个遮光部分和形成在基底的一个表面上的区域以外的区域中的光扩散部分， 形成遮光部。 光扩散部具有光出射端面和具有比光出射端面大的面积的光入射端面，并且光漫射部的高度大于遮光部的厚度。 多个空气腔中的至少一部分的开口的至少一部分具有由光扩散部的朝向开口内侧突出的一部分形成的突起。

公开(公告)号：US20150042935A1

公开(公告)日：2015-02-12

申请号：US14387895

申请日：2013-03-15

Applicant: Sharp Kabushiki Kaisha

Inventor： Emi Yamamoto ,  Tsuyoshi Maeda ,  Toru Kanno

IPC: G02F1/1335 ,  G03F7/20 ,  G02B5/02

CPC classification number: G02F1/133504 ,  G02B5/0231 ,  G02B5/0236 ,  G02B5/0242 ,  G02B5/0294 ,  G02F1/133512 ,  G02F2001/133562 ,  G03F7/20

Abstract: A light control film includes a light shielding layer and a light diffusion portion, and, when an area of a part where the light shielding layer is in contact with one surface of the base material is set to S1, and an area of a part where a low refractive index portion is exposed between light incidence end surfaces is set to S2, the light shielding layer and the light diffusion portion are formed so as to satisfy (S1−S2)/S1×100≧50.

Abstract translation: 光控制膜包括遮光层和光扩散部，并且当遮光层与基材的一个表面接触的部分的面积设定为S1时， 在光入射端面之间露出的低折射率部分设定为S2，遮光层和光扩散部分形成为满足（S1-S2）/ S1×100≥50。

公开(公告)号：US20150042934A1

公开(公告)日：2015-02-12

申请号：US14382859

申请日：2013-03-12

Applicant: Sharp Kabushiki Kaisha

Inventor： Toru Kanno ,  Emi Yamamoto ,  Tsuyoshi Maeda

IPC: G02B5/02 ,  G03F7/30 ,  G02F1/1335

CPC classification number: G02B5/0247 ,  B32B3/266 ,  B32B27/08 ,  B32B27/36 ,  B32B27/365 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2307/412 ,  B32B2307/418 ,  B32B2307/42 ,  B32B2457/20 ,  B32B2551/00 ,  G02B5/00 ,  G02B5/02 ,  G02B5/0257 ,  G02F1/133504 ,  G02F1/133524 ,  G02F2001/133562 ,  G03F7/30 ,  G09F9/00

Abstract: A viewing angle extending film (a light diffusing member) includes a base material with optical transparency, a plurality of light-shielding layers dotted on one surface of the base material, and a transparent resin layer (optically transparent material layer) provided on the one surface of the base material. At least a light-shielding layer, which is part of the plurality of light-shielding layers, has a planar shape surrounded by a first figure and a second figure contained in the first figure or a planar shape surrounded by at least part of the first figure and at least part of the second figure overlaid with the first figure. Hollow portions are provided in a formation region of the light-shielding layers, each hollow portion being shaped so that a cross-sectional area obtained by cutting along a plane parallel to the one surface of the base material is large on the light-shielding layer side and is gradually decreased as being away from the light-shielding layer. A part other than the hollow portions is taken as a light transmitting portion.

Abstract translation: 视角延伸膜（光扩散构件）包括具有光学透明性的基材，在基材的一个表面上点缀的多个遮光层和设置在该基材上的透明树脂层（透光材料层） 基材表面。 作为多个遮光层的一部分的至少遮光层具有由第一图形包含的第一图形和第二图形包围的平面形状，或者由第一图形的至少一部分包围的平面形状 并且第二个图的至少部分与第一个图重叠。 空心部设置在遮光层的形成区域中，每个中空部分被成形为使得沿着平行于基材的一个表面的平面切割而获得的横截面积在遮光层上大 并且随着远离遮光层而逐渐减小。 将除了中空部分之外的部分作为透光部分。

公开(公告)号：US20140354927A1

公开(公告)日：2014-12-04

申请号：US14368565

申请日：2012-12-25

Applicant: Sharp Kabushiki Kaisha

Inventor： Toru Kanno ,  Emi Yamamoto ,  Tsuyoshi Maeda

IPC: G02F1/1335 ,  G02B5/02

CPC classification number: G02F1/133504 ,  G02B5/02 ,  G02B5/0257

Abstract: In a liquid crystal display device including a light control film utilizing total reflection, a liquid crystal panel, and a directional backlight, the light control film includes a transparent base material, a light blocking layer, and a light diffusing portion. The light diffusing portion has a light output end surface on side closer to the transparent base material and a light input end surface on side opposite to the transparent base material, the light input end surface having a larger area than the light output end surface. A film thickness of the light diffusing portion is larger than a thickness of the light blocking layer. A material having a smaller refractive index than the light diffusing portion is present in a cavity defined by the light diffusing portion, and the film anisotropically diffuses light.

Abstract translation: 在包括使用全反射的光控制膜，液晶面板和方向性背光的液晶显示装置中，光控制膜包括透明基材，遮光层和光漫射部。 光扩散部具有靠近透明基材的一侧的光输出端面和与透明基材相反一侧的光输入端面，光输入端面的面积比光输出端面大。 光扩散部的膜厚比遮光层的厚度大。 具有比光扩散部折射率小的材料存在于由光扩散部限定的空腔中，并且膜各向异性扩散光。

公开(公告)号：US20140253843A1

公开(公告)日：2014-09-11

申请号：US14353050

申请日：2012-10-23

Applicant: Sharp Kabushiki Kaisha

Inventor： Toru Kanno ,  Emi Yamamoto ,  Tsuyoshi Maeda

IPC: G02B5/02 ,  G02F1/1335

CPC classification number: G02B5/0278 ,  G02B5/0242 ,  G02F1/133504 ,  G02F1/133526 ,  G02F1/133606

Abstract: A display apparatus includes at least a light source, a display element, and an isotropic diffusion layer. When θ0 is an emission angle at which light from the light source has a maximum luminous flux ratio, θ1 is an average traveling angle at which light incident on the display element at the angle θ0 travels to the isotropic diffusion layer, T is a distance from an image formation surface to an interface between a light diffusing member and the isotropic diffusion layer, n0 is a refractive index of air, n1 is an average refractive index in a region between the image formation surface and the isotropic diffusion layer, P is a pixel pitch, and P′ is a distance between a position at which a portion of light emitted from an end portion of one of the pixels reaches the isotropic diffusion layer in a direction perpendicular to the isotropic diffusion layer and a position at which another portion of the light emitted from the end portion of the one of the pixels reaches the isotropic diffusion layer at the traveling angle θ1, the following Expressions (1), (2), and (3) are satisfied.

Abstract translation: 显示装置至少包括光源，显示元件和各向同性扩散层。 当θ= 0时，来自光源的光具有最大的光通量比，θ是以角度θ入射到显示元件上的光到各向同性扩散层的平均行进角度 T是从图像形成表面到光漫射构件和各向同性扩散层之间的界面的距离，n0是空气的折射率，n1是图像形成表面和各向同性扩散之间的区域中的平均折射率 P是像素间距，P'是从一个像素的端部射出的光的一部分在垂直于各向同性扩散层的方向到达各向同性扩散层的位置与位置之间的距离， 其中从一个像素的端部发射的光的另一部分以行进角度到达各向同性扩散层; 1，以下表达式（1），（2）和 （3）。

公开(公告)号：US10061150B2

公开(公告)日：2018-08-28

申请号：US14387895

申请日：2013-03-15

Applicant: Sharp Kabushiki Kaisha

Inventor： Emi Yamamoto ,  Tsuyoshi Maeda ,  Toru Kanno

IPC: G02F1/1335 ,  G02B5/02 ,  G03F7/20

CPC classification number: G02F1/133504 ,  G02B5/0231 ,  G02B5/0236 ,  G02B5/0242 ,  G02B5/0294 ,  G02F1/133512 ,  G02F2001/133562 ,  G03F7/20

Abstract: A light control film includes a light shielding layer and a light diffusion portion, and, when an area of a part where the light shielding layer is in contact with one surface of the base material is set to S1, and an area of a part where a low refractive index portion is exposed between light incidence end surfaces is set to S2, the light shielding layer and the light diffusion portion are formed so as to satisfy (S1−S2)/S1×100≥50.

公开(公告)号：US09904094B2

公开(公告)日：2018-02-27

申请号：US15304111

申请日：2015-04-16

Applicant: Sharp Kabushiki Kaisha

Inventor： Shohei Katsuta ,  Tsuyoshi Maeda ,  Emi Yamamoto ,  Yasushi Asaoka ,  Hideomi Yui

IPC: G02F1/1335 ,  F21V8/00

CPC classification number: G02F1/133504 ,  G02B6/0046 ,  G02B6/0051 ,  G02B6/0053 ,  G02F1/133512 ,  G02F1/133528 ,  G02F1/133553 ,  G02F2001/133562

Abstract: A liquid crystal display (1) includes a liquid crystal panel (4), a backlight (2), and a light-diffusing member (7). There exist azimuths in which a transmittance of the liquid crystal panel (4) and a luminance of the backlight (2) are higher than a transmittance and a luminance in a direction of a normal. The azimuth in which the transmittance of the liquid crystal panel (4) is higher coincides with the azimuth in which the luminance of the backlight (2) is higher.

公开(公告)号：US09709841B2

公开(公告)日：2017-07-18

申请号：US14419527

申请日：2013-08-05

Applicant: Sharp Kabushiki Kaisha

Inventor： Shohei Katsuta ,  Tsuyoshi Kamada ,  Hideomi Yui ,  Tsuyoshi Maeda ,  Kazuyoshi Sakuragi

IPC: G02F1/1335 ,  G02B5/02

CPC classification number: G02F1/133504 ,  G02B5/02 ,  G02F1/133528 ,  G02F1/1336 ,  G02F2001/133562

Abstract: Provided is a liquid crystal display device in which grayscale inversion when viewing a liquid crystal panel in an oblique direction is suppressed, thereby being excellent in viewing angle characteristics. The liquid crystal display device includes a liquid crystal panel that includes a pair of substrates, a liquid crystal layer disposed between the pair of substrates, and a pair of polarization plates respectively arranged in the liquid crystal layer on a light incident side and a light emission side, an illumination device that is arranged on the light incident side of the liquid crystal panel and emits light toward the liquid crystal panel, and a light diffusion member that is arranged on the light emission side of the liquid crystal panel and causes light emitted from the liquid crystal panel to be diffused in an azimuthal direction viewed from a normal direction of the liquid crystal panel. When the total width of a polar angle when luminance is reduced to ⅓ of the maximum luminance in characteristics of polar angle luminance of the illumination device is referred to as a ⅓-total width, the ⅓-total width of the illumination device is equal to or greater than 60° in the azimuthal direction in which variations in luminance of the illumination device in a polar angle direction are the greatest.

公开(公告)号：US09453946B2

公开(公告)日：2016-09-27

申请号：US14438257

申请日：2013-10-24

Applicant: Sharp Kabushiki Kaisha

Inventor： Yasushi Asaoka ,  Tsuyoshi Maeda ,  Emi Yamamoto ,  Toru Kanno ,  Shohei Katsuta ,  Hideomi Yui

IPC: G02B5/02 ,  G02B5/30 ,  G02F1/1335

CPC classification number: G02B5/0257 ,  G02B5/0242 ,  G02B5/0268 ,  G02B5/0278 ,  G02B5/3033 ,  G02F1/133504 ,  G02F1/133512 ,  G02F1/133524 ,  G02F2001/133562 ,  Y10T29/49885

Abstract: Provided is a display device including a light-diffusing member that includes a substrate, a plurality of light-shielding layers, and a light-diffusing section, and a polarizing plate. The light-diffusing member is configured to diffuse light, which is incident from a polarizing plate side, in an anisotropic manner, the light-diffusing section has a light-emitting end surface that is in contact with the substrate, a light-incident end surface that is opposite to the light-emitting end surface and has an area larger than an area of the light-emitting end surface, and a reflective surface that is in contact with the light-emitting end surface and the light-incident end surface and reflects light incident from the light-incident end surface, a height of the light-diffusing section from the light-incident end surface to the light-emitting end surface is set to be larger than a layer thickness of the light-shielding layers, and an azimuth angle direction in which diffusibility of the light-diffusing member is relatively strong, and a transmission axis of the polarizing plate are approximately parallel with each other.

Abstract translation: 提供了一种显示装置，其包括具有基板，多个遮光层和光扩散部的光扩散部件和偏振板。 光扩散部件以各向异性的方式漫射偏振板侧的光，光扩散部具有与基板接触的发光端面，光入射端 表面与发光端面相反并且具有比发光端面的面积大的面积，以及与发光端面和光入射端面接触的反射面，以及 反射从光入射端面入射的光，从光入射端面到发光端面的光扩散部的高度被设定为大于遮光层的层厚度， 光扩散构件的扩散性相对较强的方位角方向，偏振片的透射轴大致平行。