The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2023
Filed:
May. 04, 2022
Radiant Opto-electronics Corporation, Kaohsiung, TW;
Chun-Hau Lai, Kaohsiung, TW;
Wei-Hsuan Chen, Kaohsiung, TW;
Yung-Hui Tai, Kaohsiung, TW;
Chun-Yi Wu, Kaohsiung, TW;
Yuan-Chen Chung, Kaohsiung, TW;
Radiant Opto-Electronics Corporation, Kaohsiung, TW;
Abstract
An optical film includes a substrate layer and a plurality of optical layers stacked on the substrate layer. The at least two optical layers have microstructures that complement to each other. The optical layer close to the substrate layer is the first optical layer, and the optical far from the substrate layer is the second optical layer. The refractive index of the first optical layer is smaller than the second optical layer, and the microstructure of the second optical layer has an acute angle. Because of the arrangement of the optical layers, the contrast of light intensity can be reduced, and the uniformity can be improved. The invention also provides a backlight module and a display device including the optical film.