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:
Feb. 10, 2009
Filed:
Apr. 08, 1999
Shunpei Yamazaki, Tokyo, JP;
Akira Mase, Aichi, JP;
Masaaki Hiroki, Kanagawa, JP;
Semiconductor Energy Laboratory, Co., Ltd., Kanagawa-ken, JP;
Abstract
A novel structure of an active display device is disclosed. The device is characterized as having at least one display device comprising a substrate having an insulated surface with at least one thin film transistor (TFT) formed over the substrate and a gate insulating film and gate electrode adjacent to the channel region, with the gate insulating layer interposed between the gate electrode and the channel region. In one embodiment, an interlayer insulating film covers the TFT and an aluminum lead electrode is formed over the interlayer insulating layer that is electrically connected to one of the source or drain regions of the TFT through a hole of the interlayer insulating film. In another embodiment of the invention the first and second holes of the interlayer insulating layer do not overlap. In a preferred embodiment, an organic resin film, with a pixel electrode form thereover, is formed over the thin film transistor, the interlayer insulating film and the lead electrode is provide a leveled upper surface. The pixel electrode is electrically connected to the TFT via the lead electrode. The present invention is applicable with any device with a display, such as a television or a personal computer.