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:
Dec. 17, 2024
Filed:
Apr. 29, 2021
Boe Technology Group Co., Ltd., Beijing, CN;
Wei Wei, Beijing, CN;
Beijing BOE Technology Development Co., Ltd., Beijing, CN;
Abstract
An embodiment of the present disclosure provides a display apparatus, including: a display panel and a functional substrate that is located on a light exit side of the display panel; the functional substrate includes: a transparent substrate configured to have a first total reflection angle; a specular reflection layer located on a side of the transparent substrate; and a holographic film layer located between the transparent substrate and the specular reflection layer and configured so that a part of incident light, of which the propagation direction faces towards the transparent substrate and the incident angle is within a first incident angle range, is diffracted and is emitted to the transparent substrate at a first exit angle, the first exit angle being greater than or equal to the first total reflection angle. Further provided are a preparation method for a display apparatus and a smart mirror.