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. 02, 2021
Filed:
Aug. 01, 2019
Fujifilm Corporation, Tokyo, JP;
Yujiro Yanai, Kanagawa, JP;
Hideki Kaneiwa, Kanagawa, JP;
Nobuyuki Akutagawa, Kanagawa, JP;
Daisuke Kashiwagi, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
Provided is an organic EL display device in which blue brightness is improved, and an antireflection function in an oblique direction is enhanced. The problem is solved by ensuring that a polarizer, a phase difference layer, a circularly polarized light separating layer, and a light emitting element are provided from a viewing side, an in-plane retardation Re(550) of the phase difference layer is set to 100 to 160 nm, the circularly polarized light separating layer is a cholesteric liquid crystal layer having a selective reflection center wavelength in a range of 425 to 475 nm, and a sum of retardations Rth(550) in a thickness direction of members arranged between the polarizer and the light emitting element is set to −50 to 50 nm.