Patent · US Active

Display module, display device and viewing-angle switching method

US11442299B2 · kind B2 · utility

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19Claims

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Inventors

Pan Yuan · Hefei, CN
Sijun Lei · Beijing, CN
Liang Gao · Houston, US
Xianyong Gao · Beijing, CN
Yansheng Sun · Beijing, CN
Yunsong Li · Beijing, CN
Zhicai Xu · Beijing, CN
Yong Long · Shanghai, CN
Ying Zhang · Beijing, CN
Dengqian Li · Beijing, CN
Guojian ZHANG · Beijing, CN
Fanjian Zeng · Beijing, CN
Shanbin Chen · Beijing, CN
Sen Tan · Bukit Mertajam, MY
Hebing Ma · Beijing, CN
Chaojie Zhang · Beijing, CN
Song Liu · San Jose, US
Xinzhi SHAO · Beijing, CN
Yong Deng · Beijing, CN
Xiangchao Chen · Beijing, CN
Genchuan Yan · Beijing, CN
Ying Yang · Nanhu, CN
Xinyu Wang · Beijing, CN

Key dates

Filing date	May 13, 2020
Grant date	Sep 13, 2022
Priority date	—
Expiry date	May 13, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/13476
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Disclosed are a display module, a display device and a viewing-angle switching method. The display module includes a backlight module, a display panel, a lower polarizer sheet, a viewing-angle switching element and a transparent cover plate; the viewing-angle switching element and the transparent cover plate are arranged between the display panel and the lower polarizer sheet, and the transparent cover plate is arranged on a side of the viewing-angle switching element that is close to the lower polarizer sheet; the backlight module is configured to supply light that meets a preset condition, the viewing-angle switching element is configured to switch viewing-angle modes of the display module; the viewing-angle modes include; a first viewing-angle mode and a second viewing-angle mode; and a viewing-angle range of the first viewing-angle mode is smaller than a viewing angle range of the second viewing-angle mode.

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