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:
May. 10, 2022
Filed:
Jan. 28, 2021
Boe Technology Group Co., Ltd., Beijing, CN;
Liangliang Jin, Beijing, CN;
Zezhou Yang, Beijing, CN;
Ruoyu Ma, Beijing, CN;
Qing Liu, Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Abstract
Embodiments of the present disclosure relate to a prism film, a backlight module, and a display device. The prism film includes a substrate and a plurality of prisms on a surface of the substrate, each of the plurality of prisms having a triangular cross section, and having a first optical surface, a second optical surface, and a third optical surface that are perpendicular to the triangular cross section, wherein the first optical surface is parallel to the surface of the substrate, the first optical surface and the second optical surface form a first bottom angle, the first optical surface and the third optical surface form a second bottom angle, and at least one of the first bottom angle and the second bottom angle of the plurality of prisms gradually changes.