The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2004
Filed:
Aug. 20, 2002
Kiyoshi Shigehiro, Ashigarakami-gun, JP;
Kiyokazu Mashimo, Minamiashigara, JP;
Kenji Yao, Minamiashigara, JP;
Hiroshi Miyamoto, Minamiashigara, JP;
Kyoko Nishikawa, Minamiashigara, JP;
Yasufumi Suwabe, Ashigarakami-gun, JP;
Yoshinori Machida, Ashigarakami-gun, JP;
Takeshi Matsunaga, Ashigarakami-gun, JP;
Yoshiro Yamaguchi, Ashigarakami-gun, JP;
Motohiko Sakamaki, Ashigarakami-gun, JP;
Katsumi Nukada, Minamiashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a display element, which is driven at a low voltage, displays a high-contrast image with few density irregularities, and has improved image holding property. In a display element, which displays an image by moving, between a first and second substrate, particles having different colors and charge polarities by an electric field applied between the first and second substrates, the surface roughness of at least one of the substrates is 1 nm to 1 &mgr;m, the coefficient of shape is to , the width and depth of the recessed part are not identical to the diameter of the particles and the contacting parts of the recessed part and the particles do not form a surface.