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. 04, 1984
Filed:
Apr. 25, 1983
Jarmo I Skarp, Helsinki, FI;
Oy Lohja Ab, Virkkala, FI;
Abstract
Described herein is a combination film based on aluminium oxide (Al.sub.2 O.sub.3) and titanium oxide (TiO.sub.2), to be used in particular in the thin film electroluminescent structures. Aluminum oxide is an amorphous insulator having a low refraction index, whereas titanium oxide is a chrystalline conductor having a high refraction index. The combination film according to the invention comprises a plurality of alternating aluminium oxide and titanium oxide layers having a thickness of 3 to 1000 .ANG.. preferably 5 to 250 .ANG.. Such a combination film has favorable dielectric strength and refraction index properties and is particularly adapted for use in electroluminescence structures.