Organic light-emitting diode (OLED) display panel, pixel define layer (PDL) and preparation method thereof

US9373814B2 · kind B2 · utility

Assignee

• BOE Technology Group Co., Ltd. · CN

Inventors

• Wei Liu · Beijing, CN
• Chunsheng Jiang · Tangxia, CN
• Dongfang Wang · Lexington, US
• Yanzhao Li · Beijing, CN

Key dates

• Filing date: Dec 16, 2013
• Grant date: Jun 21, 2016
• Expiry date: Dec 16, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/00

Abstract

A pixel define layer (PDL) of an organic light-emitting diode (OLED) display panel, which comprises a first PDL (21) and a second PDL (22) overlapped on the first PDL. The first PDL (21) is a hydrophobic film layer provided with openings (210) corresponding to luminous regions of sub-pixel units; and the second PDL (22) is a hydrophilic film layer provided with openings (220) corresponding to the openings (210) of the first PDL. The PDL can avoid the mutual pollution of organic light-emitting materials in luminous regions of different colors in adjacent sub-pixel units in the preparation process.