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:
Apr. 10, 2012
Filed:
Jul. 02, 2009
Miharu Otani, Yokohama, JP;
Jun Tanaka, Kawasaki, JP;
Kazuhito Masuda, Hitachi, JP;
Masaya Adachi, Hitachi, JP;
Takato Hiratsuka, Mito, JP;
Miharu Otani, Yokohama, JP;
Jun Tanaka, Kawasaki, JP;
Kazuhito Masuda, Hitachi, JP;
Masaya Adachi, Hitachi, JP;
Takato Hiratsuka, Mito, JP;
Hitachi Displays, Ltd., Chiba, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo-ken, JP;
Abstract
An object of the present invention is to increase the dichroic ratio of the built-in polarizing layer in reflective regions so that the display performance improves in a semi-transmission type liquid crystal display device having a transmissive display portion and a reflective display portion. The present invention provides a liquid crystal display device having first and second substrates which face each other with a liquid crystal layer in between, where a transmissive region and a reflective region are formed in each pixel on the above described first substrate, as well as: a reflective layer formed in the above described reflective region on the above described first substrate; a polarizing layer formed on the above described first substrate on the liquid crystal layer side of the above described reflective layer from chromonic liquid crystal molecules; a pixel electrode formed on the above described first substrate on the liquid crystal layer side of the above described reflective layer and electrically connected to a source electrode of a thin film transistor; and a protective layer formed in the reflective region between the above described polarizing layer and the above described pixel electrode which makes contact with the above described polarizing layer.