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:
Nov. 09, 1999
Filed:
Aug. 15, 1997
Makoto Nakahara, Nara, JP;
Kyouhei Isohata, Yamatokoriyama, JP;
Daisuke Ikesugi, Joyo, JP;
Kazuya Yoshimura, Kitakatsuragi-gun, JP;
Tokio Kiguchi, Nara, JP;
Manabu Ano, Yamatokoriyama, JP;
Masayuki Yamanaka, Yamatokoriyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal display device includes a pair of substrates having a plurality of display-use electrodes formed thereon, a seal for connecting the pair of substrates in such a manner that respective electrode forming surfaces face each other, a liquid crystal layer formed by sealing a liquid crystal in a space surrounded by the pair of substrates and the seal, and dummy electrodes for achieving a uniform thickness of the liquid crystal layer in the display area. The display-use electrodes and the dummy electrodes are interleaved on four sides of the seal, and an absolute value for variations in interleaved ratio in the four sides, indicative of a ratio of an area occupied by the display-use electrodes and the dummy electrodes on the seal is not more than a predetermined value. As this permits a uniform thickness of the seal on the four sides, a difference in brightness between a central portion and a portion in a vicinity of the seal in the display area can be eliminated, thereby improving a display quality.