Organic EL display panel and manufacturing method thereof
AssigneePanasonic Corporation
InventorsShuhei Nakatani, Hidehiro Yoshida, Kiyohiko Takagi
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Abstract
Disclosed is an organic EL display panel which includes: a substrate; a linear first bank which is disposed over the substrate and defines a linear region; a second bank which defines two or more pixel regions arranged in the linear region; a pixel electrode disposed in the pixel region; a linear organic layer which is formed by coating method in the linear region over the pixel electrode and second bank; and a counter electrode over the organic layer, wherein the first bank is larger in height than the second bank, the first and second banks are made of resin, anisole contact angle at the top of the first bank is 30-60°, and anisole contact angle at the top of the second bank is 5-30°.
Claims11
An organic EL display panel, comprising:
- a substrate;
- a linear first bank which is disposed over the substrate and defines a linear region;
- a second bank which defines two or more pixel regions arranged in the linear region;
- a pixel electrode disposed in the pixel region;
- a linear organic layer which is formed by a coating method over the pixel electrode and the second bank;
- and
- a counter electrode disposed over the organic layer, wherein
- the first bank is larger in height than the second bank,
- a material of the first bank and the second bank is a fluorine resin,
- the fluorine concentration at the top of the first bank is 4 to 10 atom % and the fluorine concentration at the top of the second bank is 1 to 4 atom %, and
- the fluorine concentration at the top of the first bank is higher than the fluorine concentration at the top of the second bank.
A method of manufacturing an organic EL display panel, comprising:
- providing a substrate on which a pixel electrode is arranged;
- forming a linear first bank which defines a linear region, and a second bank which defines two or more pixel regions arranged in the linear region over the substrate;
- applying a material solution containing an organic EL material in the linear region to form a linear organic layer;
- and
- forming a counter electrode over the organic layer, wherein
- the first bank is larger in height than the second bank,
- a material of the first bank and the second bank is a fluorine resin,
- the fluorine concentration at the top of the first bank is 4 to 10 atom % and the fluorine concentration at the top of the second bank is 1 to 4 atom %, and
- the fluorine concentration at the top of the first bank is higher than the fluorine concentration at the top of the second bank.
Dependencies are inferred from the claim text.