US 12,405,408 B2
Optical film and display device
Zhiyuan Yin, Shenzhen (CN); Lixuan Chen, Shenzhen (CN); and Hu Dou, Shenzhen (CN)
Assigned to SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Shenzhen (CN)
Appl. No. 17/618,510
Filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen (CN)
PCT Filed Nov. 11, 2021, PCT No. PCT/CN2021/130144
§ 371(c)(1), (2) Date May 4, 2023,
PCT Pub. No. WO2023/070751, PCT Pub. Date May 4, 2023.
Claims priority of application No. 202111283626.4 (CN), filed on Nov. 1, 2021.
Prior Publication US 2024/0036239 A1, Feb. 1, 2024
Int. Cl. G02B 5/02 (2006.01); G02F 1/1335 (2006.01); H10K 59/80 (2023.01)
CPC G02B 5/0231 (2013.01) [G02F 1/133504 (2013.01); H10K 59/878 (2023.02)] 14 Claims
OG exemplary drawing
 
1. An optical film applied to a display panel, wherein the optical film is disposed on one side of a display surface of the display panel, and the optical film comprises:
multiple optical structures, wherein one side of each of the optical structures away from the display surface is provided with multiple arced surfaces for reflecting at least a portion of environment light, and each of the optical structures has a first refractive index;
a filling part, which is disposed on one side of the optical structures away from the display surface, covers the optical structures, is filled between the optical structures, and has a second refractive index greater than the first refractive index; and
a base layer disposed on one side of the optical structures facing the display panel;
wherein each of the optical structures is in contact with the base layer;
each of the optical structures comprises a bottom wall and multiple sidewalls, wherein the bottom wall is disposed on one side of the sidewall facing the display panel, and the sidewalls tilt to the bottom wall;
the base layer has a third refractive index, which is greater than the first refractive index and smaller than the second refractive index.