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:
May. 01, 2007
Filed:
Jul. 09, 2004
Hsin-hung Lee, Taipei, TW;
Wei-pang Huang, Hsinchu, TW;
Chun-hsiun Chen, Sansia Township, Taipei County, TW;
Hsin-Hung Lee, Taipei, TW;
Wei-Pang Huang, Hsinchu, TW;
Chun-Hsiun Chen, Sansia Township, Taipei County, TW;
AU Optronics Corporation, Hsinchu, TW;
Abstract
The present invention discloses a method for fabricating a pixel area of an electro-luminescent display device. At least one buffer layer is formed on a substrate. An etch stop layer is formed on the buffer layer. At least one intermediate layer is formed over the etch stop layer. The intermediate layer is etched to expose the etch stop layer, which has an etch rate substantially selective against that of the intermediate layer. The etch stop layer is etched to expose the buffer layer, which has an etch rate substantially selective against that of the etch stop layer, thereby improving an level uniformity of the exposed buffer layer.