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:
Jul. 19, 2011
Filed:
Jan. 31, 2007
Hirotaka Imayama, Mobara, JP;
Tetsuya Nagata, Mobara, JP;
Osamu Itou, Hitachi, JP;
Shoichi Hirota, Hitachi, JP;
Hirotaka Imayama, Mobara, JP;
Tetsuya Nagata, Mobara, JP;
Osamu Itou, Hitachi, JP;
Shoichi Hirota, Hitachi, JP;
Hitachi Displays, Ltd., Chiba, JP;
Abstract
The present invention enhances display efficiency and a contrast of a reflective part in an IPS-type transflective liquid crystal display device. In a transflective liquid crystal display device in which the liquid crystal display device includes a liquid crystal display panel having a pair of substrates and liquid crystal sandwiched between the pair of substrates, the liquid crystal display panel includes a plurality of sub pixels each having a transmissive part and a reflective part, each sub pixel out of the plurality of sub pixels includes a pixel electrode which is formed on one substrate out of the pair of substrates and a counter electrode which is formed on the one substrate, and an electric field is generated by the pixel electrode and the counter electrode thus driving the liquid crystal, a portion of the counter electrode of the each sub pixel at the reflective part constitutes a reflective electrode, the reflective electrode includes an uneven portion and a flat portion, and the flat portion of the reflective electrode is arranged on a boundary portion between the transmissive part and the reflective part of the each sub pixel.