ORGANIC EL ELEMENT AND MANUFACTURING METHOD THEREOF

• US 20120091888A1
• Filed: 12/21/2011
• Published: 04/19/2012
• Est. Priority Date: 05/31/2007
• Status: Active Grant

• Current Assignee: JDI Design and Development GK
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: YOSHIDA, Hidehiro, KITAMURA, Yoshiro, NAKATANI, Shuhei, NAGAI, Hisao
• Granted Patent: US 8,330,359 B2
• Time in Patent Office: Days
• US Class Current: 313/512
• 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 is provided with a substrate; an electrode set on the substrate; an organic EL layer set on the electrode; and a bank which define the organic EL layer. A lyophilicity at a top of the bank is higher than a lyophilicity at a bottom surface of the bank, and a lyophilicity of the bank gradually changes from the bottom surface of the bank to the top of the bank.

Claims

1. An organic EL element comprising:

a substrate;

an electrode set on the substrate;

an organic EL layer set on the electrode; and

a resin-containing bank set on the substrate with a bottom surface of the bank setting on the substrate, which define the organic EL layer;

wherein

a lyophilicity at a top of the bank is higher than a lyophilicity at the bottom surface of the bank, and

a lyophilicity of the bank gradually changes from the bottom surface of the bank to the top of the bank.

2. The organic EL element according to claim 1, wherein the bank comprises a fluorine resin.

3. The organic EL element according to claim 2, wherein a fluorine concentration of the fluorine resin at the top of the bank is 5 to 10 atom %.

4. The organic EL element according to claim 2, wherein a fluorine concentration of the fluorine resin at the bottom surface of the bank is 0 to 3 atom %.

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

6. The organic EL element according to claim 1, wherein the bank has a tapered shape in which an area of the bottom surface of the bank is larger than an area of the top of the bank.

7. The organic EL element according to claim 2, wherein the bank has a tapered shape in which an area of the bottom surface of the bank is larger than an area of the top of the bank.

8. The organic EL element according to claim 3, wherein the bank has a tapered shape in which an area of the bottom surface of the bank is larger than an area of the top of the bank.

9. The organic EL element according to claim 4, wherein the bank has a tapered shape in which an area of the bottom surface of the bank is larger than an area of the top of the bank.

10. The organic EL element according to claim 5, wherein the bank has a tapered shape in which an area of the bottom surface of the bank is larger than an area of the top of the bank.