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Thermal transfer film and organic electroluminescent device prepared by the same

A thermal transfer film and light-to-heat conversion layer technology, which is applied in printing devices, printing, circuits, etc., can solve problems such as difficulty in maintaining the coating appearance and uniformity of the light-to-heat conversion layer, low durability, and difficulty in dispersing

Active Publication Date: 2014-02-12
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since carbon black tends to agglomerate, it is difficult to disperse uniformly, thus making it difficult to maintain a good coating appearance and uniformity of the light-to-heat conversion layer
In addition, organic dyes or pigments, or metal complexes can obtain uniform coating, but exhibit low durability against heat or light

Method used

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  • Thermal transfer film and organic electroluminescent device prepared by the same
  • Thermal transfer film and organic electroluminescent device prepared by the same
  • Thermal transfer film and organic electroluminescent device prepared by the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] 5 parts by weight of UV-curable acrylate resin, 60 parts by weight of tungsten oxide particle dispersion, and 0.5 parts by weight of initiator are added to 100 parts by weight of methyl ethyl ketone as a solvent. Then, the prepared composition was stirred for 30 minutes, thereby preparing a composition for a light-to-heat conversion layer. The composition was coated on the base film with a coater, and then dried in an oven at 80°C for 2 minutes, and heated at 300mJ / cm under a nitrogen atmosphere. 2 It was cured, thereby preparing a film including a light-to-heat conversion layer having a thickness of 3 μm.

Embodiment 2

[0093] 30 parts by weight of UV-curable acrylate resin, 30 parts by weight of tungsten oxide particle dispersion, and 0.5 parts by weight of initiator were added to 100 parts by weight of methyl ethyl ketone as a solvent. Then, the prepared composition was stirred for 30 minutes, thereby preparing a composition for a light-to-heat conversion layer. The composition was coated on the base film with a coater, and then dried in an oven at 80°C for 2 minutes, and heated at 300mJ / cm under a nitrogen atmosphere. 2 It was cured, thereby preparing a film including a light-to-heat conversion layer having a thickness of 3 μm.

Embodiment 3

[0095] 50 parts by weight of UV-curable acrylate resin, 20 parts by weight of tungsten oxide particle dispersion, 40 parts by weight of carbon black dispersion, 0.5 parts by weight of initiator, and 1.0 parts by weight of dispersant (acrylic polymer dispersion Agent) was added to 100 parts by weight of methyl ethyl ketone as a solvent. Then, the prepared composition was stirred for 30 minutes, thereby preparing a composition for a light-to-heat conversion layer. The composition was coated on the base film with a coater, and then dried in an oven at 80°C for 2 minutes, and heated at 300mJ / cm under a nitrogen atmosphere. 2 It was cured, thereby preparing a film including a light-to-heat conversion layer having a thickness of 3 μm.

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Abstract

The thermal transfer film inludes a base layer; and a light-to-heat conversion layer formed on an upper side of the base layer, wherein the light-to-heat conversion layer may include at least one of particles selected from tungsten oxide particles and composite tungsten oxide particles and wherein the particles are present in an amount of ‰¥ 20 wt% to ‰¤ 65 wt% in the light-to-heat conversion layer. An organic electroluminescent device prepared using the same is also disclosed.

Description

Technical field [0001] The invention relates to a thermal transfer film and an organic electroluminescence device prepared using the thermal transfer film. More specifically, the present invention relates to a thermal transfer film and an organic electroluminescence device prepared using the thermal transfer film, the thermal transfer film comprising a light-to-heat conversion (LTHC) layer, the light-to-heat conversion layer comprising particles selected from tungsten oxide and At least one of the composite tungsten oxide particles. Background technique [0002] The light-to-heat conversion (LTHC) layer absorbs light in a specific wavelength range and converts at least some of the absorbed light into heat. The thermal transfer film includes a light-to-heat conversion layer formed on an acceptor substrate and a transfer layer formed on the light-to-heat conversion layer, and the transfer layer is composed of a luminescent material, or an electron or hole transport compound. When...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/46H10K99/00
CPCB41M5/465H01L51/0013H01J9/20B41M5/44B41M2205/38H10K71/18B41M5/38242
Inventor 朴时均姜炅求朴世铉李正孝赵成昕
Owner CHEIL IND INC