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:
Jan. 31, 2023
Filed:
Dec. 12, 2018
Boe Technology Group Co., Ltd., Beijing, CN;
Chunjing Hu, Beijing, CN;
BOE Technology Group Co., Ltd., Beijing, CN;
Abstract
A flattening device, a display substrate and a method for manufacturing the display substrate are provided. The method includes providing a base substrate, forming a pixel definition layer on the base substrate and forming an uncured sub-pixel material in a plurality of sub-pixel regions defined by the pixel definition layer, and flattening the uncured sub-pixel material by a flattening device. The flattening device includes a main body and a plurality of protrusions on a surface of the main body. A size of a protrusion surface of each protrusion facing away from the main body is not greater than that of each sub-pixel region. The sub-pixels are flattened by using the flattening device, so a sub-pixel material layer with a flat surface may be obtained, which improves the structure of the sub-pixels and improves the display performance of the display substrate.