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:
Aug. 06, 2002
Filed:
Dec. 10, 1999
Shinichi Nakata, Tokyo, JP;
Yuji Yamamoto, Tokyo, JP;
Mamoru Okamoto, Tokyo, JP;
Michiaki Sakamoto, Tokyo, JP;
Takahiko Watanabe, Tokyo, JP;
Hirofumi Ihara, Tokyo, JP;
Hironori Kikkawa, Tokyo, JP;
Muneo Maruyama, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A liquid crystal display device comprises a transparent insulator substrate, switching elements which are formed on the transparent insulator substrate, a passivation layer for passivating the switching elements, color filters of prescribed colors which are formed on the passivation layer so that no color filter will be formed in areas around contact holes, black matrixes as shields for preventing light leakage which are formed on the passivation layer after the formation of the color filters so as to cover at least the switching elements and so that no black matrix will be formed in areas around the contact holes, an overcoat layer which is formed on the color filters and the black matrixes, pixel electrodes formed on the overcoat layer, lead electrodes of the switching elements for being connected to corresponding pixel electrodes, and contact holes which are formed through the overcoat layer and the passivation layer for establishing connection between the pixel electrodes and lead electrodes of the switching elements. The black matrixes are formed so that the edge of the black matrix touching the edge of the color filter will be superposed on the edge of the color filter.