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:
Dec. 13, 1994
Filed:
Nov. 12, 1991
Akiyoshi Mikami, Yamatotakada, JP;
Koichi Tanaka, Nara, JP;
Kouji Taniguchi, Nara, JP;
Masaru Yoshida, Nara, JP;
Shigeo Nakajima, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A process for preparing an electroluminescent film which comprises causing a substrate held at a high temperature to simultaneous contact two kinds of vapors of (a) Group II element and a Group VI element or a compound thereof, capable of forming a Group II-VI compound semiconductor, and (b) a halide of an element capable of acting as luminescent centers in the Group II-VI compound semiconductor, in the presence of flowing hydrogen or an inert gas, whereby a thin electroluminescent film comprising the Group II-VI compound semiconductor and containing the element forming the luminescent centers is formed on the surface of the substrate.