Gte Products Corporation

US Government As Represented by the Secretary of the Army

Mohamed I Abdalla

Timothy Fohl

Lawrence L Hope

M Robert Miller

The present invention is directed to novel AC thin film electroluminescent display devices employing a protective dielectric stripe along the edges of the transparent electrode (or conductor). In particular, the present invention is directed to an AC thin film electroluminescent display device comprising:

Edge breakdown protection in ACEL thin film display

An optically transparent and electrically conductive film is patterned on a ubstrate, for instance in an electro-optical display device such as an electroluminescent device having a patterned transparent electrode layer, by a process utilizing a double masking structure that provides for more positive delineation of thin film device patterns. In this process, an indium tin oxide layer is formed between a metallic pattern on a glass substrate and a photoresist mask. The indium tin oxide layer has a metal lift-off mask under those areas that are to be removed and a photoresist protective mask over those areas that are to remain. The double masking will also provide greater protection to the electrode areas during the critical etching steps in developing an electroluminescent display.

Growing community of inventors

Beverly, MA, United States of America

Mohamed I Abdalla