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:
Nov. 25, 2008
Filed:
Nov. 01, 2006
Takuo Kaitoh, Mobara, JP;
Takahiro Kamo, Mobara, JP;
Toshihiko Itoga, Chiba, JP;
Hitachi Displays, Ltd., Chiba, JP;
Abstract
The present invention provides a display device which forms thin film transistor circuits differing in characteristics from each other on a substrate in mixture and a fabrication method of the display device. On a glass substrate having a background layer which is formed by stacking an SiN film and an SiOfilm, a precursor film which is constituted of an a-Si layer or a fine particle crystalline p-Si layer is formed and the implantation is applied to the precursor film. Here, an acceleration voltage and a dose quantity are adjusted such that a proper quantity of dopant is dosed in the inside of the precursor film. When the precursor film is melted by laser radiation, the dopant dosed in the precursor film is activated and taken into the precursor.