Patent · US Expired

Electrochromic-nanoparticle displays

US7180649B2 · kind B2 · utility

155Cited by

55References

14Claims

0Family size

Assignee

E Ink Holdings Inc. · TW

Inventors

Ian D. Morrison · Acton, US
Joseph M. Jacobson · Newton, US

Key dates

Filing date	May 6, 2003
Grant date	Feb 20, 2007
Priority date	—
Expiry date	Sep 28, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG02F2202/36
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A display comprises spaced first and second electrodes, and a plurality of electrochromic nanoparticles disposed between the electrodes, each of the nanoparticles having an electron-rich state and an electron-depleted state, the two states differing in at least one optical characteristic. Upon injection of charge from one of the electrodes, the nanoparticles switch between their electron-rich and electron-depleted states, thus changing an optical characteristic of the display.

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