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. 16, 2000
Filed:
Apr. 09, 1998
Takatoku Shimizu, Tokyo, JP;
Mitsuhiko Ogihara, Tokyo, JP;
Masumi Taninaka, Tokyo, JP;
Hiroshi Hamano, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
In an array of light-emitting diodes formed by diffusion of an impurity into a semiconductor substrate, the width of the diodes in the array direction is between four-tenths and five-tenths of the array pitch. The width of the windows above the diodes is between three-tenths and four-tenths of the array pitch. Between one-fourth and one-half of the surface area of each diode is covered by an electrode making contact with the diode through the window. The distance from the centers of the light-emitting diodes at the ends of the array to the edges of the substrate is between twenty-five and sixty-five hundredths of the array pitch.