Patent · US Active

LED display screen

US12142713B2 · kind B2 · utility

0Cited by

2References

16Claims

0Family size

Assignee

APPOTRONICS CORPORATION LIMITED · CN

Inventors

Lin Wang · Nanhu, CN
Shijie LI · Lo Wu, CN
Fei Hu · Nanhu, CN
Wei Sun · Longbeilingcun, CN
Yi Li · Nanhu, CN

Key dates

Filing date	Sep 26, 2019
Grant date	Nov 12, 2024
Priority date	—
Expiry date	Feb 22, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG02B5/0278
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An LED display screen, comprising: an LED array, consisting of multiple LED light-emitting units and used for emitting a light; an optical diffusion film, provided at a light exit side of the LED array; a matrix shading frame, comprising multiple hollow shading gratings, the hollow shading gratings corresponding one-to-one to the LED light-emitting units; and a substrate, used for supporting the LED array and the matrix shading frame, where the light emitted by the LED light-emitting units, after running through the hollow shading gratings, is diffused to a viewer side via the optical diffusion film, and the LED light-emitting units emit the light towards the hollow shading gratings.

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