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:
Sep. 12, 2023
Filed:
Nov. 13, 2019
Sony Group Corporation, Tokyo, JP;
Ryoko Horikoshi, Kanagawa, JP;
Keigo Inoue, Kanagawa, JP;
Sony Group Corporation, Tokyo, JP;
Abstract
An improvement in image quality is achieved by compensating for a phase difference occurring in tilted light to achieve an improvement in contrast while suppressing luminance irregularity when in black display. An optical compensation device includes: a first optical compensation unit configured to generate a phase difference that has a substantially equal amount and a reverse sign in light with each incidence angle within a predetermined incidence angle range on a vertical alignment type liquid crystal panel with respect to a phase difference occurring from the liquid crystal panel; and a second optical compensation unit configured to generate a phase difference in an in-plane direction. The first optical compensation unit can appropriately compensate for a phase difference occurring in tilted light passing through a liquid crystal panel and the second optical compensation unit can suppress luminance irregularity when in black display.