Patent · US Active

Tetrachromatic color filter array for reflective display

US8873129B2 · kind B2 · utility

115Cited by

59References

18Claims

0Family size

Assignee

E Ink Holdings Inc. · TW

Inventors

Richard J. Paolini, Jr. · Framingham, US
Stephen J. Telfer · Arlington, US
Alain Bouchard · Boston, US
John Atkinson · Somerville, US

Key dates

Filing date	Apr 4, 2012
Grant date	Oct 28, 2014
Priority date	—
Expiry date	Apr 4, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02F2203/055
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A tetrachromatic color filter array comprises multiple pixels, each of which comprises first, second, third and fourth sub-pixels having first, second, third and fourth hues, P1, P2, P3 and P4 respectively, these first, second, third and fourth hues having first, second and third hue angles, h1, h2, h3 and h4 respectively. The hues of the sub-pixels such that h3 equals h1+(180°±10°) and h4 equals h2+(180°±10°) in the a*b* plane of the La*b* color space.

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