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:
Jul. 08, 2014
Filed:
Oct. 03, 2005
Misako Hirosue, Tochigi, JP;
Masahiro Katayama, Tochigi, JP;
Shunpei Yamazaki, Tokyo, JP;
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Abstract
The invention provides a technique to manufacture a display device with high image quality and reliability at low cost with high yield. According to the invention, a spacer is provided over a pixel electrode layer in a pixel region. Moreover, a surface of an insulating layer which functions as a partition which covers the periphery of the pixel electrode layer is formed at a high position from the surface of the pixel electrode due to stacked layers under the insulating layer. These spacer and insulator which function as a spacer support a mask used for selectively forming a light emitting material over a pixel electrode layer, thereby preventing the mask from contacting the pixel electrode layer due to a twist and deflection of the mask. Accordingly, such a damage as a crack does not occur in the pixel electrode layer which results in having no defect in shape. Therefore, a display device which performs a high resolution display with high reliability can be manufactured.