Patent · US Active

Piezo electrophoretic display

US11493821B2 · kind B2 · utility

1Cited by

55References

8Claims

0Family size

Assignee

E Ink California, LLC · US

Inventors

Haiyan Gu · Fremont, US
Hanan Liu · Milpitas, US
HongMei Zang · Sunnyvale, US

Key dates

Filing date	Aug 13, 2019
Grant date	Nov 8, 2022
Priority date	—
Expiry date	Dec 15, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02F2201/44
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A writing apparatus including a first electrode, a layer of piezoelectric material; and a layer of electrophoretic material positioned between the first electrode and the layer of piezoelectric material, wherein stress on the layer of piezoelectric material results in optical changes in the layer of electrophoretic material.

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