| US 7,463,408 B2 | ||
| Fast full color electrophoretic display with improved driving | ||
| Mark Thomas Johnson, Eindhoven (Netherlands); Lucas Josef Maria Schlangen, Eindhoven (Netherlands); Patrick John Baesjou, Eindhoven (Netherlands); and Guofu Zhou, Eindhoven (Netherlands) | ||
| Assigned to Koninklijke Philips Electronics N.V., Eindhoven (Netherlands) | ||
| Appl. No. 10/576,319 PCT Filed Oct. 13, 2004, PCT No. PCT/IB2004/052076 § 371(c)(1), (2), (4) Date Apr. 18, 2006, PCT Pub. No. WO2005/040908, PCT Pub. Date May 06, 2005. |
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| Claims priority of application No. 03103915 (EP), filed on Oct. 23, 2003. | ||
| Prior Publication US 2007/0064302 A1, Mar. 22, 2007 | ||
| Int. Cl. G02B 26/00 (2006.01) | ||
| U.S. Cl. 359—296 [359/290; 359/295] | 21 Claims |
| 1. A color electrophoretic display comprising at least one pixel operative to display visible light in a predetermined range
of three or more wavelengths, each pixel comprising at least two sub-pixels which each comprise:
a color filter operative to absorb one sub-range of said predetermined range of wavelengths and pass the other wavelengths;
an electrophoretic media comprising two types of particles, each type of particle being operative to absorb a second and third
sub-range of said predetermined range of wavelengths, respectively; and
means for separately controlling the spatial distribution of the respective particles in said electrophoretic media between
visible and invisible locations;
wherein said fixed sub-ranges of the respective sub-pixels in each pixel are essentially non-overlapping and in combination
cover essentially all of said predetermined range of wavelengths; and
wherein, in each sub-pixel, said second and third sub-ranges are different from each other, and cover essentially all of said
predetermined range of wavelengths only in combination with the fixed sub-range of the related sub-pixel.
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