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. 09, 2018
Filed:
Mar. 08, 2017
Vitro S.a.b. DE C.v., Cheswick, PA (US);
John D. Basil, Pittsburgh, PA (US);
Abhinav Bhandari, Cranberry, PA (US);
Harry Buhay, Allison Park, PA (US);
Mehran Arbab, Pittsburgh, PA (US);
Gary J. Marietti, Cheswick, PA (US);
Vitro, S.A.B. de C.V., Nuevo Leon, MX;
Abstract
An organic light emitting diode includes a substrate having a surface modification layer. The surface modification layer includes a first film and a second film. The first film has a coefficient of expansion that is greater than the coefficient of expansion for the second film. The second film has ridges and troughs. A method of making a surface modification layer. A first film is formed over a substrate. The coated substrate is heated to expand the first film to a second surface area. A second film is formed over the expanded first film. The substrate coated with the first and second films is cooled to form ridges and troughs in the second film.