US 11,874,481 B2
Head-mounted display
Tsubasa Sakano, Shizuoka (JP); and Masahide Sugiyama, Shizuoka (JP)
Assigned to TOMOEGAWA CO., LTD., Tokyo (JP)
Appl. No. 17/054,768
Filed by Tomoegawa Co., Ltd., Tokyo (JP)
PCT Filed Mar. 22, 2019, PCT No. PCT/JP2019/012068
§ 371(c)(1), (2) Date Nov. 11, 2020,
PCT Pub. No. WO2019/220775, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 2018-093205 (JP), filed on May 14, 2018.
Prior Publication US 2021/0263200 A1, Aug. 26, 2021
Int. Cl. H01L 29/08 (2006.01); G02B 5/02 (2006.01); H10K 50/854 (2023.01); H10K 59/35 (2023.01); H10K 59/38 (2023.01)
CPC G02B 5/0257 (2013.01) [G02B 5/0221 (2013.01); H10K 50/854 (2023.02); H10K 59/35 (2023.02); H10K 59/38 (2023.02)] 12 Claims
OG exemplary drawing
 
1. A head-mounted display comprising an anisotropic optical film whose linear transmittance changes depending on an incident light angle on a viewing side with respect to a color filter or an RGB light emitting layer in an organic electroluminescence display panel, wherein:
the anisotropic optical film includes at least a single-layered or multilayered anisotropic light diffusion layer;
the anisotropic light diffusion layer has a matrix region and a plurality of pillar regions having a refractive index different from that of the matrix region;
surface irregularities are formed in at least one outermost surface of the single-layered or multilayered anisotropic light diffusion layer; and
the surface irregularities have an arithmetic average roughness Ra of 0.10 μm or less, which is measured in accordance with JIS B0601-2001.