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Encapsulation film

A technology of encapsulation film and encapsulation layer, which can be applied to household seals, synthetic resin layered products, and other household appliances, and can solve problems such as OLED bright spots

Active Publication Date: 2020-01-24
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is the issue of OLED bright spots due to possible outgassing inside the OLED device

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Manufacture of encapsulation layer

[0095] To prepare the first layer solution, a solution in which 180 g of butyl rubber resin (BT-20, Sunwoo Chemtech) and 60 g of DCPD (dicyclopentadiene) petroleum resin (SU5270, Sunwoo Chemtech) were diluted with toluene was prepared (solid content was 33%), and then the solution was homogenized. Introduce 10 g of multifunctional acrylate (trimethylolpropane triacrylate, Miwon) and 3 g of photoinitiator (Irgacure 819, Ciba) into the homogenized solution, make it homogenized and then stir at high speed for 1 hour, to prepare the first layer solution.

[0096] To prepare the second layer solution, a calcined dolomite (average particle diameter 3 μm) solution (solid content 50%) was prepared as a hygroscopic agent. In addition, 140 g of polyisobutylene resin (weight-average molecular weight: 450,000), 14 g of Ni particles (particle diameter: about 300 nm) as a bright spot suppressor, and 60 g of hydrogenated dicyclopentadiene resin a...

Embodiment 2 to 9 and comparative example 1 to 5

[0102] An encapsulation film was manufactured in the same manner as in Example 1 except that the bright spot suppressor was changed as shown in Table 1.

[0103] [Table 1]

[0104]

experiment example 1

[0105] Experimental Example 1 - Calculation of Adsorption Energy

[0106] The adsorption energies of the bright spot suppressors used in Examples and Comparative Examples to exhaust gas were calculated by electronic structure calculation based on density functional theory. After making a two-dimensional flat plate structure exposed on the surface where the closest-packed filling surface of the bright spot suppressor having a crystalline structure is made, structural optimization is performed, and a structure in which bright spot-causing molecules are adsorbed on the surface in a vacuum state is carried out. After structure optimization, a value obtained by subtracting the total energy of molecules causing bright spots from the total energy difference of these two systems was defined as the adsorption energy. For the calculation of the total energy for each system, the modified PBE function as a function of the GGA (Generalized Gradient Approximation) series is used as the exch...

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Abstract

The present application relates to an encapsulation film, a method for producing the same, an organic electronic device comprising the same, and a method for producing an organic electronic device using the same, and provides an encapsulation film which can form a structure capable of blocking moisture or oxygen introduced into an organic electronic device from the outside, and can prevent the generation of bright spots in the organic electronic device.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2017-0072500 filed on June 9, 2017, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present application relates to encapsulating films, organic electronic devices comprising the same, and methods for producing organic electronic devices using the same. Background technique [0004] An organic electronic device (OED) means a device including an organic material layer that generates an alternating current of charges using holes and electrons, and examples thereof may include photovoltaic devices, rectifiers, emitters, organic light emitting diodes (OLEDs), and the like. [0005] Organic light emitting diodes (OLEDs) among the above organic electronic devices have lower power consumption and faster response speed than existing light sources, and are advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52B32B27/08B32B27/20
CPCB32B27/08B32B27/20H10K50/846B32B2264/105B32B2581/00B32B2264/102H10K50/8423H10K50/8426H10K50/844
Inventor 文晶玉柳贤智睦英凤梁世雨
Owner LG CHEM LTD
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