Ink for forming functional layer, method of manufacturing ink for forming functional layer, and method of manufacturing organic electro-luminescence element
AssigneeSeiko Epson Corporation
InventorsKoji Imamura, Masahiro Uchida, Takuya Sonoyama
Life of this patent
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Abstract
An ink for forming a functional layer, which is used when any thin film layer among functional layers consisting of a plurality of thin film layers is formed, includes a functional layer forming material and a solvent for dissolving the functional layer forming material, and in which the number of particles of 0.5 μm or more is 7 or less in 10 ml of the ink for forming a functional layer.
Claims15
An ink for forming a functional layer, the ink comprising:
- a solvent;
- and
- a functional material for forming the functional layer, the functional material dissolving in the solvent;
- wherein the ink includes solid contents which are not dissolved in the solvent, and
- a number of the solid contents having a size of 0.5 μm or more is 7 or less in 10 ml of the ink.
A method of manufacturing an ink for forming a functional layer, the ink including a functional material and a solvent for dissolving the functional material, comprising:
- measuring first sizes and numbers of solid contents included in the ink, which are not dissolved in the solvent;
- selecting a first filter having a first hole diameter based on the first sizes and numbers;
- filtering the ink using the first filter;
- measuring second sizes and numbers of the solid contents included in the ink, which are not dissolved in the solvent;
- selecting a second filter having a second hole diameter based on the second sizes and numbers;
- and
- filtering the ink using a second filter,
- wherein, in the selecting of the second filter, the second hole diameter is selected based on the first hole diameter and a number of the solid contents having a size of 0.5 μm or more, which is acquired based on the second sizes and numbers.
Dependencies are inferred from the claim text.