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:
Oct. 11, 2005
Filed:
Jun. 27, 2003
Yasunobu Hashimoto, Akashi, JP;
Yoshiho Seo, Akashi, JP;
Naoki Itokawa, Akashi, JP;
Motonari Kifune, Higashimorokata-gun, JP;
Yasushi Ohkawa, Akashi, JP;
Yasunobu Hashimoto, Akashi, JP;
Yoshiho Seo, Akashi, JP;
Naoki Itokawa, Akashi, JP;
Motonari Kifune, Higashimorokata-gun, JP;
Yasushi Ohkawa, Akashi, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A light-emitting display device includes a substrate and light-emitting layers constituting pixels on a surface of the substrate in which light emission is electrically controlled for every pixel. The light-emitting display device further includes barriers delimiting at least one side of each pixel. On the surface of the substrate, at least part of a region that corresponds to each pixel has irregularities for light scattering. The difference between the maximum height and the minimum height of the irregularities is at least 0.4 μm. The barriers and the irregularities are formed by sandblasting the surface of the substrate. The irregularities reduce attenuation of light by total reflection in the interior of the substrate and improve brightness of the device.