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:
Feb. 04, 2020
Filed:
Sep. 25, 2018
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Tsuyoshi Okazaki, Sakai, JP;
Yuko Teraoka, Sakai, JP;
Hiroshi Tsuchiya, Sakai, JP;
Masanobu Mizusaki, Sakai, JP;
Kiyoshi Minoura, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
A liquid crystal display device includes: a first polarizing plate; a first substrate; a first vertical alignment film; a liquid crystal layer; a second vertical alignment film; a second substrate; and a second polarizing plate, wherein a first retardation layer is disposed between the first polarizing plate and the liquid crystal layer and includes first and second areas having mutually different in-plane phase differences, a second retardation layer is disposed between the second polarizing plate and the liquid crystal layer and includes third and fourth areas having mutually different in-plane phase differences, the first and third areas overlap boundaries between at least four domains of liquid crystal molecules in a pixel region and have an in-plane phase difference in a predetermined range, and in-plane slow axes of the first and third areas and absorption axes of the first and second polarizing plates each have a predetermined azimuth.