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Resin convex mould for relief printing and method for producing organic EL elements using the same

A letterpress printing and resin technology, which is applied in the field of organic EL element manufacturing, can solve the problems of low solubility, high polymer swelling, and reduced dimensional accuracy, achieving small damage, stable dimensional accuracy, and no damage effect

Active Publication Date: 2010-01-06
KOMURA TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the solubility of conjugated polymer compounds known as polymer materials is low. Therefore, it is necessary to use aromatics such as xylene and toluene as solvents during the printing process.
The aromatic solvent part has a high swelling property with respect to the polymer, and therefore, when forming an organic light-emitting layer by, for example, an offset printing method, there is a problem of swelling in a solvent and a decrease in dimensional accuracy due to repeated printing processes.

Method used

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  • Resin convex mould for relief printing and method for producing organic EL elements using the same
  • Resin convex mould for relief printing and method for producing organic EL elements using the same
  • Resin convex mould for relief printing and method for producing organic EL elements using the same

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Embodiment

[0050] Next, examples will be described.

[0051] Prepare Figure 1 ~ Figure 3 Resin relief of the structure shown. The JIS rubber hardness of the resin relief plate was Shore A 85°, and the weight change rate of the resin relief plate was 5% when continuously immersed in anisole at a room temperature of 23° C. for 24 hours. This resin relief plate was produced using the plate materials shown in Table 1 below in the same manner as the above-mentioned resin relief plate. The total thickness of the plate was 1.3 mm, and the thickness of the substrate was 0.7 mm.

[0052] Table 1

[0053] The total thickness of the plate

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Abstract

The present invention provides a resin convex mould for relief printing with a stable dimension precision and less damage to substrates when printing even thought printing time and again, and a method for producing organic EL elements using the resin convex mould. A light-sensitive resin composition obtained by fitting a prepolymer and single-function or multi-functional monomer is used as mould material, wherein the prepolymer is prepared by adding acrylic ester into a polymerisation product of polyester polyatomic alcohol and diisocyanates.

Description

technical field [0001] The present invention relates to a resin relief plate for relief printing used for printing an organic light-emitting layer of an organic electroluminescent (hereinafter referred to as "organic EL") element, and a method for producing an organic EL element obtained using the relief plate. Background technique [0002] In recent years, organic EL elements having features such as thinness, low power consumption, and light weight have attracted attention as display elements in mobile phones and the like. This organic EL element has a structure in which an organic light-emitting layer containing an organic EL light emitter is formed between two opposing electrodes, and the organic light-emitting layer emits light by passing a current through the organic light-emitting layer. [0003] In the above-mentioned organic EL emitters, there are low-molecular materials and high-molecular materials. Generally, low-molecular-weight materials are used and vacuum-depo...

Claims

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Application Information

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IPC IPC(8): G03F7/09H01L51/56
CPCH05B33/10B41N1/12H10K50/00
Inventor 福岛幸裕天野正典西山聪浦野雅明
Owner KOMURA TECH
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