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:
Jun. 29, 2004
Filed:
Jul. 08, 2002
Yuka Utsumi, Hitachi, JP;
Yasushi Tomioka, Hitachi, JP;
Masatoshi Wakagi, Hitachi, JP;
Yasunari Maekawa, Takasaki, JP;
Sukekazu Aratani, Hitachiota, JP;
Katsumi Kondo, Mito, JP;
Shigeru Matsuama, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A normally closed liquid crystal display device using an in-plane switching mode prevented from light leakage caused by spacer beads and having a high contrast ratio can be produced by making a pretilt angle between an alignment control film and liquid crystals 4° or less and controlling a light leakage centering the spacer in 4-divided shapes; or by placing a film provided with a liquid crystal alignment controlling function by irradiation with polarized light between the spacer and a liquid crystal layer, the spacer being present in a pair of substrates.