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:
Nov. 23, 1993
Filed:
Oct. 03, 1991
Hiroaki Nakaya, Tenri, JP;
Takuo Yamashita, Tenri, JP;
Takashi Ogura, Nara, JP;
Masaru Yoshida, Ikoma, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A thin-film electroluminescence device has transparent electrodes formed on a transparent substrate, a lower dielectric layer formed on the substrate having the transparent electrodes, a luminescent layer formed on the lower dielectric layer, an upper dielectric layer formed on the luminescent layer, and back electrodes formed on the upper dielectric layer. At least one of the upper and lower dielectric layers includes a SiN:H film formed in contact with the luminescent layer by a plasma chemical vapor deposition method. The SiN:H film contains N--H bonds of 1.2.times.10.sup.22 /cm.sup.3 or less to control an amount of change in emission-start voltage to 30 V or less.