Organic light-emitting display substrate, method of fabricating the same, display panel, and display device

US10204968B2 · kind B2 · utility

Assignee

• BOE Technology Group Co., Ltd. · CN

Inventors

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

Key dates

• Filing date: Jan 15, 2016
• Grant date: Feb 12, 2019
• Expiry date: Jan 15, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K71/20

Abstract

The present invention provides an organic light-emitting display substrate, a method of fabricating the same, an organic light-emitting display panel, and an organic light-emitting display device. The organic light-emitting display substrate comprises a pixel defining layer provided on a base substrate and configured to define a sub-pixel region, the pixel defining layer comprises an accommodation area corresponding to a sub-pixel, and a groove located on an outer peripheral side of the accommodation area. In a process of forming an organic light-emitting layer by means of inkjet printing, excessive ink flows into the groove on the outer peripheral side of the accommodation area, which facilitates matching between a volume of ink for forming the organic light-emitting layer and a thickness of an actual organic light-emitting layer.