Ink composition for ink-jetting and method for manufacturing organic film using the same
A composition and inkjet technology, applied in semiconductor/solid-state device manufacturing, application, ink, etc., can solve the problems of complex manufacturing process, high vacuum equipment, etc., and achieve the effect of high work efficiency and low possibility of burning
Active Publication Date: 2014-04-02
JOLED INC
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Problems solved by technology
However, there are problems such as the need for high-vacuum equipment and complicated manufacturing processes when forming the light-emitting layer by vapor deposition.
Method used
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Embodiment 1
[0102] An organic solvent for an ink composition was prepared by mixing 80 parts by weight of cyclohexylbenzene and 20 parts by weight of benzyl butyl ether. An ink composition was obtained by dissolving the fluorene-based polymer in the prepared organic solvent so as to have a concentration of 1.4% (g / ml). The obtained ink composition had a viscosity of 15.25 mPa·s and a surface tension of 32.88 mN / m at 20°C.
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Abstract
PROBLEM TO BE SOLVED: To provide an ink composition for an ink jet which is hard to catch fire and hardly causes clogging of a nozzle of an ink-jet head even during a jet standby.SOLUTION: An ink composition for an ink jet contains: a π-electron conjugated functional organic material; and an organic solvent containing an ether-based solvent represented by the following general formula (1), where m is an integer satisfying 0≤m≤3, n is an integer satisfying 1≤n≤8, and 4≤m+n≤8.
Description
technical field [0001] The present invention relates to an inkjet ink composition and a method for producing an organic thin film using the inkjet ink composition. Background technique [0002] An organic electroluminescent (EL) element is an element utilizing the principle that an organic EL material emits light by recombining holes injected from an anode and electrons injected from a cathode by applying an electric field. As an element structure of an organic EL element, a two-layer structure of a hole transport (injection) layer and an electron transport light-emitting layer, or a three-layer structure of a hole transport (injection) layer, a light-emitting layer, and an electron transport (injection) layer are known. structure etc. In an organic EL device having such a stacked structure, in order to improve the recombination efficiency of injected holes and electrons, various studies have been made on the formation method of each layer. [0003] The organic EL material...
Claims
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IPC IPC(8): C09D11/30H01L51/50H05B33/10
Inventor 及川一摩东田隆亮高桥美枝
Owner JOLED INC
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