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. 31, 2006
Filed:
Jul. 14, 2003
Katsuyoshi Ishihara, Mobara, JP;
Tatsuo Hamamoto, Mobara, JP;
Katsuyoshi Ishihara, Mobara, JP;
Tatsuo Hamamoto, Mobara, JP;
Hitachi Displays, Ltd., Tokyo, JP;
Abstract
In a liquid crystal display device includes a pair of substrates between which a liquid crystal layer filled, a plurality of pixel regions each of which includes a pixel electrode and an active element connected to the pixel electrode on a main surface of one of the pair of substrates, the present invention provides a first electrode layer electrically connected to the active element, a color filter layer formed over the first electrode layer and having an opening portion, and a second electrode layer covering the color filter layer, and utilizes the second electrode layer as the pixel electrode by connecting the second electrode layer to the first electrode layer electrically through the opening portion of the color filter layer. Since the liquid crystal display device according to the present invention allows light incident on the liquid crystal layer partially to pass through the opening portion of the color filter layer in each of the pixel regions, the luminance of the displayed image is increased without deteriorating the contrast.