ORGANIC EL ELEMENT AND MANUFACTURING METHOD THEREOF

• US 20110140596A1
• Filed: 02/25/2011
• Published: 06/16/2011
• Est. Priority Date: 05/31/2007
• Status: Active Grant

• Current Assignee: JDI Design and Development GK
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Kitamura, Yoshiro, Nagai, Hisao, Yoshida, Hidehiro, Nakatani, Shuhei
• Granted Patent: US 8,217,573 B2
• Time in Patent Office: Days
• US Class Current: 313/504
• CPC Class Codes: H10K 10/466 Lateral bottom-gate IGFETs comprising only a single gate
• CPC Class Codes: H10K 50/14 Carrier transporting layers
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/173 comprising banks or shadow masks
• CPC Class Codes: H10K 71/12 using liquid deposition, e.g. spin coating
• CPC Class Codes: H10K 85/1135 Polyethylene dioxythiophene [PEDOT]; Derivatives thereof

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.

Claims

1. An organic EL element comprising:

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;

wherein

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 μ

m.

2. The organic EL element according to claim 1, wherein the fluorine concentration at the top of the bank is 5 to 10 atom % and the fluorine concentration at the bottom surface of the bank is 0 to 3 atom %.