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Substrate for organic electronic device

A technology for organic electronic devices and substrates, which is applied in the field of substrates for organic electronic devices and can solve problems such as not being effectively applied

Active Publication Date: 2016-03-16
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently known light extraction techniques generally use rigid substrates such as glass substrates, and thus are not effectively applied to devices using flexible substrates that have different properties from glass substrates.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0081] Preparation Example 1: Manufacture of Polyimide Substrate (A)

[0082] The first polyamic acid solution (refractive index: about 1.625) was passed through 3,3',4,4'-diphenyltetracarboxylic dianhydride (BPDA) and p-phenylenediamine (PDA) in one reactor Synthesized by condensation reaction, the second polyamic acid solution (refractive index: about 1.56) is synthesized by condensation reaction of BPDA and 2,2'-bis(trifluoromethyl)benzidine (TFMB) in another reactor . The composition for forming a film is prepared by the following process: the first polyamic acid solution is mixed with the second polyamic acid solution at a ratio of 5:95 (first polyamic acid: second polyamic acid), based on solid The mixture was stirred using a stirrer for 16 hours or more based on the weight of the substance. Subsequently, the polyimide substrate (A) was synthesized by the following process: the composition for forming a film was spin-coated on a glass substrate with a thickness of abou...

preparation Embodiment 2

[0083] Preparation Example 2: Manufacture of Polyimide Substrate (B)

[0084] The polyimide substrate (B) was produced by the same method as described in Production Example 1, except that a film-forming composition prepared by the process of combining BPDA and TFMB through the condensation reaction of BPDA and TFMB was used. The prepared first polyamic acid solution (refractive index: about 1.56) and the second polyamic acid solution prepared by condensation reaction of 2,2'-bis-(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (FDA) and TFMB Two polyamic acid solutions (refractive index: about 1.541) were mixed in a ratio of 5:95 (first polyamic acid:second polyamic acid) based on the weight of solids. The haze of the synthesized base film is about 5.12% and the light transmittance is about 86.4% according to ASTM D1003 using a haze meter HM-150.

preparation Embodiment 3

[0085] Preparation Example 3: Manufacture of Polyimide Substrate (C)

[0086] The polyimide substrate (C) was manufactured by the same method as described in Preparation Example 1, except that a film-forming composition prepared by the following process was used: the condensation reaction of BPDA and TFMB The prepared first polyamic acid solution (refractive index: about 1.56) and the second polyamic acid solution (refractive index: about 1.541) prepared by the condensation reaction of FDA and TFMB were prepared at a ratio of 10:90 (the first polyamic acid: the second Dipolyamic acid) ratio mixing. The haze of the synthesized base film is about 16.44% and the light transmittance is about 83.5% according to ASTM D1003 using a haze meter HM-150.

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Abstract

The present application relates to a substrate for an organic electronic device. The present application can provide a substrate, which can be applied to the manufacturing of a flexible device having excellent physical properties, such as light extraction efficiency by having appropriate haze, and which can maintain other physical properties such as surface smoothness and refractive index as necessary.

Description

technical field [0001] The present application relates to a substrate for an organic electronic device and its use. Background technique [0002] Types of organic electronic devices (OEDs) include organic light emitting devices (OLEDs), organic solar cells, organic photoconductors (OPCs) or organic transistors. For example, a conventional OED sequentially includes a glass substrate, a transparent electrode layer, an organic layer including a light emitting unit, and a reflective electrode layer. [0003] In a structure called a bottom emitting device, the transparent electrode layer may be formed as a transparent electrode layer, and the reflective electrode layer may be formed as a reflective electrode layer. Also, in a structure called a top emitting device, the transparent electrode layer may be formed as a reflective electrode layer, and the reflective electrode layer may be formed as a transparent electrode layer. Electrons and holes are injected from the electrode la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/00C09K11/06H01L51/52H01L27/32H10K99/00
CPCY02E10/549H10K77/10H10K77/111H10K59/873H10K59/877H10K59/8731H10K59/879H10K59/875C09K11/06H10K59/00H10K71/00H10K85/141H10K50/854H10K50/858H10K50/85H10K50/844H10K50/8445H10K2102/311H10K2102/351C08G73/128C08K3/22C08K2003/2241C08L79/08C08L2203/20
Inventor 金持凞李政炯朴祥准金勇男
Owner LG DISPLAY CO LTD