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    • 1. 发明专利
    • Optical sheet, surface light source device, and liquid crystal display device
    • 光学片,表面光源装置和液晶显示装置
    • JP2013072940A
    • 2013-04-22
    • JP2011210572
    • 2011-09-27
    • Dainippon Printing Co Ltd大日本印刷株式会社
    • MATSUHASHI TAKESHIUSHIYAMA AKINOBUENDO KEISUKE
    • G02B5/04B32B27/30F21S2/00F21Y101/00F21Y101/02F21Y103/00G02B5/02G02F1/13357
    • PROBLEM TO BE SOLVED: To provide an optical sheet having a superior restoration property and having a rugged structure hard to be damaged, a surface light source device including the same, and a liquid crystal display device.SOLUTION: The optical sheet includes: a transparent base material; and a rugged-shaped optical function expression part that is provided on one surface side of the transparent base material and has a plurality of unit rugged structures on a surface on the other side of the transparent base material. The optical function expression part is composed of a hardened material of an active energy ray curable resin including acrylate resin and/or methacrylic resin. When the surface of the optical function expression part is observed with an atomic force microscope, the optical sheet presents the projection structure with the average diameter of 0.1-2 μm and the average height of 1 nm-100 nm.
    • 解决的问题:为了提供具有优异的恢复性能并且具有难以损坏的坚固结构的光学片,包括该光学片的表面光源装置和液晶显示装置。 光学片包括:透明基材; 以及设置在透明基材的一个表面侧上并且在透明基材的另一侧的表面上具有多个单位粗糙结构的凹凸形状的光学功能表达部分。 光学功能表达部分由包含丙烯酸酯树脂和/或甲基丙烯酸树脂的活性能量射线固化树脂的硬化材料组成。 当用原子力显微镜观察光学功能表达部分的表面时,光学片呈现平均直径为0.1-2μm,平均高度为1nm-100nm的投影结构。 版权所有(C)2013,JPO&INPIT
    • 3. 发明专利
    • Transmission type screen and rear projection display device
    • 传输类型屏幕和后端投影显示设备
    • JP2014191172A
    • 2014-10-06
    • JP2013066175
    • 2013-03-27
    • Dainippon Printing Co Ltd大日本印刷株式会社
    • MATSUHASHI TAKESHI
    • G03B21/62G03B21/10H04N5/74
    • PROBLEM TO BE SOLVED: To provide a transmission type screen that is easy to be formed into a curved surface, and can efficiently emit a video with high directivity.SOLUTION: There is provided a transmission type screen 10 in which a plurality of layers transmitting video light incident from a light incidence surface side to a light emission surface side are laminated. The transmission type screen 10 includes; a Fresnel lens sheet 21 that has a Fresnel lens 23; and a laminate 11 that is arranged on the light emission side of the Fresnel lens sheet. The laminate includes: a plurality of beads 14 that are spheres and arranged in a direction along a screen surface, a space between the adjacent beads being formed so as to be capable of absorbing light; a plurality of light transmission parts 16a that are arranged in the direction along the screen surface, on an opposite side of the Fresnel lens sheet of the beads and are formed of resin transmitting the light; and voids 16b each of which is formed between the adjacent light transmission parts.
    • 要解决的问题:提供易于形成为曲面的透射型屏幕,并且可以高效地发射具有高方向性的视频。解决方案:提供了一种传输类型屏幕10,其中多个层传输视频 从光入射面侧入射到发光面侧的光被层叠。 传输类型屏幕10包括: 具有菲涅尔透镜23的菲涅尔透镜片21; 以及布置在菲涅耳透镜片的发光侧的层压体11。 层叠体包括:多个球体14,其是沿着屏幕表面的方向布置的球体,相邻的珠粒之间的空间被形成为能够吸收光; 沿着屏幕表面的方向布置的多个光传输部分16a,位于珠的菲涅尔透镜片的相对侧上,并由透射光的树脂形成; 以及各自形成在相邻的光传输部之间的空隙16b。