Organic EL element having forward tapered banks containing fluorine resin and manufacturing method thereof

US8217573B2 · kind B2 · utility

Assignee

• PANASONIC HOLDINGS CORPORATION · JP

Inventors

• Hidehiro Yoshida · Osaka, JP
• Yoshiro Kitamura · Yokohama, JP
• Shuhei Nakatani · Osaka, JP
• Hisao Nagai · Tokyo, JP

Key dates

• Filing date: Feb 25, 2011
• Grant date: Jul 10, 2012
• Expiry date: Feb 25, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K85/1135

Abstract

An organic EL element having a functional layer with a uniform film thickness is provided. The organic EL element of the present invention contains a substrate; an anode electrode set on the substrate; an organic EL layer set on the anode electrode; a cathode electrode set on the organic EL layer; and a bank having a forward tapered shape, which define the organic EL layer. The bank contains a fluorine resin, the fluorine concentration at a top of the bank is higher than the fluorine concentration at a bottom surface of the bank, and a height of the top of the bank from the substrate is 0.8 to 1.2 μm.