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:
Mar. 12, 2024
Filed:
May. 23, 2023
Beijing Rayboch Technology Co., Ltd., Beijing, CN;
Wenqing Zhao, Beijing, CN;
Beijing Rayboch Technology Co., Ltd., Beijing, CN;
Abstract
Provided are a phase retardation device, a preparation method therefor, and a display apparatus. The phase retardation device includes: a linear polarization layer, a first alignment layer, a first liquid crystal layer and a second liquid crystal layer; the linear polarization layer is located on one side of a light source; the first alignment layer is located on a side of the linear polarization layer away from the light source; the first liquid crystal layer is located on a side of the first alignment layer away from the light source; the second liquid crystal layer is located on a side of the first liquid crystal layer away from the first alignment layer, the second liquid crystal layer comprises a first subpart adjacent to the first liquid crystal layer, a second subpart and a third subpart.