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:
Jun. 02, 1998
Filed:
Mar. 04, 1997
Kikuo Ono, Naka-machi, JP;
Makoto Tsumura, Hitachi, JP;
Kazuhiro Ogawa, Mobara, JP;
Hiroki Sakuta, Mobara, JP;
Masahiko Suzuki, Mobara, JP;
Toshiki Kaneko, Chiba, JP;
Yoshiaki Nakayoshi, Mobara, JP;
Kenichi Onisawa, Hitachinaka, JP;
Kenichi Hashimoto, Hitachinaka, JP;
Tetsuro Minemura, Hitachioota, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In order to provide a liquid crystal display apparatus having bright image display and a preferred production yield, a gate insulating film under a transparent pixel electrode on a transparent substrate is provided with an aperture smaller than a plane area of the pixel electrode, and a source electrode pattern under the pixel electrode is composed so as to cross the aperture. Thin film transistors (TFT) of the liquid crystal display apparatus have a gate electrode and a laminate layer of a gate insulating film and a semiconductor film. End portions of the gate electrode and the laminate layer are tapered, and the end portion of the gate electrode is tapered with a taper angle equal to or less than three times (where, less than 90.degree.) of a taper angle at the end portion of the laminate layer.