Pixel defining layer, organic electroluminescent device and display device

US9679951B2 · kind B2 · utility

Assignee

• BOE Technology Group Co., Ltd. · CN

Inventors

• Wenjun Hou · Beijing, CN
• Chinlung Liao · Beijing, CN
• Ze Liu · Beijing, CN

Key dates

• Filing date: Jan 27, 2015
• Grant date: Jun 13, 2017
• Expiry date: Jan 27, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K59/1201

Abstract

The present invention relates to the field of display technology, particularly to a pixel defining layer, an organic electroluminescent device and a display device. The pixel defining layer comprises a first defining layer on an array substrate and a second defining layer on the first defining layer, wherein the first defining layer is made of a lyophilic inorganic material, and the second defining layer is made of a lyophobic organic material. The present invention provides a pixel defining layer, an organic electroluminescent device and a display device, wherein ink-jet printing technology is used to patternize pixels of an organic material, which serves as not only a protective layer on the first inorganic material layer during dry etching, but also a lyophobic layer on the second layer; the making of the double-layered pixel defining layer omits the process of using two masks, which can effectively reduce costs and improve production efficiency.