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:
Mar. 16, 2004
Filed:
Mar. 22, 2001
Masuyuki Oota, Kariya, JP;
Masahiro Ishii, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an IPS mode liquid crystal display device having a wide viewing angle, if a display is continued by supply of electricity, black spotted irregularities (contamination spots) occur in some cases. To prevent such phenomena, there is provided a liquid crystal display device having a liquid crystal layer and plural pixels in matrix form, which device includes a first electrode group and line group for displaying a picture, the first electrode group and line group being formed over the substrate over which the plural pixels are formed, a protective film formed between the liquid crystal layer and the first electrode group and line group, and at least one second electrode or line having either or both of a positive pole and a negative pole and formed over the protective film in the plural pixels.