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:
Jan. 07, 2003
Filed:
Jul. 13, 2000
Kazuto Noritake, Gifu, JP;
Keiichi Sano, Gifu, JP;
Sanyo Electric Co., Ltd., , JP;
Abstract
An insulator substrate ( ) is provided with a TFT including a first gate electrode ( ), a gate insulating film ( ), a semiconductor film ( ) disposed above the first gate electrode ( ), and an interlayer insulating film ( ). On the interlayer insulating film ( ) in a position above a channel ( ), the TFT further includes a second gate electrode ( ) connected to the first gate electrode ( ). A reflective display electrode ( ) composed of a reflective material and connected to a source ( ) of the TFT is arranged to extend over the TFT. In addition, the gap ( ) between adjacent reflective display electrodes ( ) is arranged in a position other than a position above a drain signal line ( ). With this arrangement, even when a black image is displayed on a crystal display device of a normally white mode, display defects due to reflection of incident light by a signal line are prevented. Furthermore, a reflection type liquid crystal display device having a high aperture rate and minimal fluctuation in the TFT characteristics can be achieved.