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:
May. 19, 2020
Filed:
Sep. 12, 2019
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Kenji Fujita, Sakai, JP;
Takayuki Natsume, Sakai, JP;
Masaaki Saitoh, Sakai, JP;
Masaomi Kuwabara, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
A liquid crystal display panel includes: a liquid crystal cell that has a liquid crystal layer; first and second linear polarizers arranged on an observer side and a back surface side of the liquid crystal cell; a first retardation layer arranged between the first linear polarizer and the liquid crystal layer; and a second retardation layer arranged between the first retardation layer and the second linear polarizer. The first and second linear polarizers and the first and second retardation layers are arranged so that at least one of following formulas (A) and (B) is satisfied:⅓≤(cos 2θ)/sin Δ≤ 3/2  (A)⅓≤(cos 2θ)/sin Δ≤ 3/2  (B)