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. 27, 2025
Filed:
Dec. 01, 2023
Shanghai Tianma Micro-electronics Co., Ltd., Shanghai, CN;
Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai, CN;
Abstract
A polarization modulation element includes N twisted nematic liquid crystal cells (where N is an integer of 3 or greater) for which a twist direction is identical. A sum of a twist angle of each of the twisted nematic liquid crystal cells is 90°. In at least one of the twisted nematic liquid crystal cells that are adjacent, the alignment axis direction of the light emitting-side substrate and the alignment axis direction of the light incident-side substrate are orthogonal to each other. In the other twisted nematic liquid crystal cells that are adjacent, the alignment axis direction of the light emitting-side substrate and the alignment axis direction of the light incident-side substrate match.