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:
Oct. 30, 2018
Filed:
Aug. 15, 2014
Boe Technology Group Co., Ltd., Beijing, CN;
Huifeng Wang, Beijing, CN;
BOE Technology Group Co., Ltd., Beijing, CN;
Abstract
An OLED display device and manufacturing method thereof are provided. The method comprises: forming an array comprising first electrodes on a base substrate, with an area to which the first electrodes correspond being a display area; forming pixel defining layers respectively between the first electrodes so that a width of a cross section of each pixel defining layer is relatively larger at a middle portion and reduced gradually towards an upper portion and a lower portion; forming organic light-emitting layers respectively on the first electrodes between the pixel defining layers; and at least forming a second electrode which is at least provided on the organic light-emitting layers. The OLED display device made in this method can minimize the coffee ring effect of the organic light-emitting layers, avoid the layer-broken phenomenon occurring to the second electrode, and thus improve the display quality and save the material for the second electrode.