OLED device and a method of preparing the same

US10707286B2 · kind B2 · utility

Assignees

• HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD. · CN
• BOE Technology Group Co., Ltd. · CN

Inventors

• Qinghe Wang · Beijing, CN
• Dongfang Wang · Lexington, US
• Tongshang Su · Beijing, CN
• Rui Peng · Beijing, CN
• Leilei Cheng · Beijing, CN
• Yang Zhang · San Diego, US
• Jun Wang · Nanhu, CN
• Guangyao Li · Beijing, CN
• Liangchen Yan · Beijing, CN
• Guangcai Yuan · Beijing, CN

Key dates

• Filing date: May 20, 2019
• Grant date: Jul 7, 2020
• Expiry date: May 20, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/3035

Abstract

An OLED device and a method of preparing the same are provided, the OLED device including: a substrate; a first source electrode on the substrate, the first source electrode having a first side surface; a first insulating layer on the first source electrode, the first insulating layer having a second side surface intersecting with an upper surface of the first source electrode and the first side surface of the first source electrode, with at least one of an angle between the first side surface and the upper surface of the substrate and an angle between the second side surface and the upper surface of the substrate being an acute angle; an active layer on the substrate, the active layer covering the first side surface and the second side surface; a gate insulating layer on the active layer; an anode on the gate insulating layer; a light emitting functional layer on the anode; and a cathode on the light emitting functional layer, the cathode including a first drain region covering the first insulating layer and being in contact with the active layer.