Patent · US Active

Optical film and method of manufacturing the same, backlight module, and display apparatus

US11402677B2 · kind B2 · utility

0Cited by

0References

17Claims

0Family size

Assignees

BEIJING BOE DISPLAY TECHNOLOGY CO., LTD. · CN
BOE Technology Group Co., Ltd. · CN

Inventors

Ying Chen · Jinshanmian, TW
Shanshan Liu · Beijing, CN
Lili Jia · Beijing, CN
Bochang Wang · Beijing, CN
Donglei Li · Beijing, CN
Hui Liu · Tianjin, CN
Honghao Yu · Beijing, CN

Key dates

Filing date	Jun 30, 2020
Grant date	Aug 2, 2022
Priority date	—
Expiry date	Dec 2, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/133317
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical film includes a light-transmissive substrate and a first annular lens group. The light-transmissive substrate has a first surface and a second surface opposite to each other. The first annular lens group is disposed on the second surface, and the first annular lens group is configured to allow light to pass through. The reflectivity of the first annular lens group decreases along a direction away from a central axis of the first annular lens group, and an extending direction of the central axis is the same as a thickness direction of the light-transmissive substrate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.