Electronic apparatus

Patent metadata

Field	Value
Publication number	US-11004918-B2
Application number	US-201916296074-A
Country	US
Kind code	B2
Filing date	Mar 7, 2019
Priority date	Mar 9, 2018
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

Provided is an electronic apparatus including: a substrate; a pixel defined layer defining a plurality of pixel areas and a plurality of non-pixel areas on the substrate; a plurality of light-emitting diodes arranged on the plurality of the pixel areas; and a thin film encapsulation portion including an organic film and sealing the pixel defined layer, or the plurality of the light-emitting diodes and the pixel defined layer, wherein the organic film includes a curable material of a composition for forming an organic film, the composition including at least one UV absorber.

First claim

What is claimed is:

1. An electronic apparatus comprising:
a substrate;
a pixel defined layer defining a plurality of pixel areas and a plurality of non-pixel areas on the substrate;
a plurality of light-emitting diodes arranged on the plurality of the pixel areas; and
a thin film encapsulation portion comprising an organic film and sealing the pixel defined layer or both the plurality of the light-emitting diodes and the pixel defined layer,
wherein the thin film encapsulation portion further comprises at least one inorganic film,
wherein the thin film encapsulation portion comprises a sealing unit in which the organic film and the inorganic film are stacked, in the number of n, n being an integer of 1 or more,
wherein the organic film comprises a cured product of a composition for forming an organic film, the composition comprising a curable material and an ultraviolet (UV) absorber, and
wherein the curable material comprises a (meth)acrylate compound.

2. The electronic apparatus of claim 1 , wherein the plurality of the light-emitting diodes are arranged on the substrate to be surrounded by the pixel defined layer.

3. The electronic apparatus of claim 1 , wherein the inorganic film comprises at least one selected from a metal, a metal halide, a metal nitride, a metal oxide, a metal oxynitride, a silicon nitride, a silicon oxide, and a silicon oxynitride.

4. The electronic apparatus of claim 1 , wherein the thin film encapsulation portion further comprises one of a lower inorganic film and a lower organic film that are disposed between the pixel defined layer and the sealing unit, or between the plurality of the light-emitting diodes and the sealing unit.

5. The electronic apparatus of claim 1 , wherein at least one of a capping layer and a protection layer is further arranged between the pixel defined layer and the sealing unit, or between the plurality of the light-emitting diodes and the sealing unit.

6. The electronic apparatus of claim 1 , wherein the curable material comprises at least one di(meth)acrylate compound and at least one mono(meth)acrylate compound.

7. The electronic apparatus of claim 6 , wherein the di(meth)acrylate compound is represented by Formula 1; and is selected from ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, neopentyl glycol di(meth)acrylate, 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, bisphenol-A di(meth)acrylate, pentaerythritol di(meth)acrylate, and dipentaerythritol di(meth)acrylate:

wherein, in Formula 1,
L 1 is —O—, —S—, S(═O) 2 —, —C(═O)—, —C(═O)O—, —C(═O)NH—, —N(R 6 )—, —C(R 6 )(R 7 )—, —Si(R 6 )(R 7 )—, or an unbranched C 6 -C 20 alkylene group,
m1 is an integer of 1 to 10,
R 1 , R 2 , R 6 , and R 7 are each independently selected from:
hydrogen, deuterium, a C 1 -C 20 alkyl group, a C 2 -C 20 alkenyl group, a C 2 -C 20 alkynyl group, and a C 1 -C 20 alkoxy group; and
deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, an epoxy group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a substituted or unsubstituted C 1 -C 20 alkyl group, and a substituted or unsubstituted C 1 -C 20 alkoxy group.

8. The electronic apparatus of claim 6 , wherein the mono(meth)acrylate compound is selected from biphenyloxy ethyl (meth)acrylate, methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isoamyl (meth)acrylate, isobutyl (meth)acrylate, isooctyl (meth)acrylate, sec-butyl (meth)acrylate, t-butyl (meth)acrylate, n-pentyl (meth)acrylate, 3-methylbutyl (meth)acrylate, n-hexyl (meth)acrylate, 2-ethyl-n-hexyl (meth)acrylate, n-octyl (meth)acrylate, cyclohexyl (meth)acrylate, isobornyl (meth)acrylate, dicyclopentanyl (meth)acrylate, dicyclopentanyloxyethyl (meth)acrylate, isomyristyl (meth)acrylate, lauryl (meth)acrylate, methoxydipropylene glycol (meth)acrylate, methoxytripropylene glycol(meth)acrylate, benzyl(meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, 5-hydroxypentyl (meth)acrylate, 6-hydroxyhexyl (meth)acrylate, 4-hydroxycyclohexyl (meth)acrylate, neopentylglycol mono(meth)acrylate, 3-chloro-2-hydroxypropyl (meth)acrylate, (1,1-dimethyl-3-oxobutyl) (meth)acrylate, 2-acetoacetoxyethyl (meth)acrylate, 2-methoxyethyl (meth)acrylate, 2-ethoxyethyl (meth)acrylate, neopentylglycol mono(meth)acrylate, ethylene glycol monomethyl ether (meth)acrylate, glycerin mono(meth)acrylate, 2-acryloyloxyethyl phthalate, 2-acryloyloxy 2-hydroxyethyl phthalate, 2-acryloyloxyethyl hexahydrophthalate, 2-acryloyloxy propylphthalate, neopentylglycolbenzoate (meth)acrylate, nonylphenoxypolyethylene glycol (meth)acrylate, nonylphenoxypolypropylene glycol (meth)acrylate, paracumylphenoxyethylene glycol (meth)acrylate, ECH modified phenoxy acrylate, phenoxyethyl (meth)acrylate, phenoxydiethylene glycol (meth)acrylate, phenoxyhexaethylene glycol (meth)acrylate, phenoxytetraethylene glycol (meth)acrylate, polyethylene glycol (meth)acrylate, polyethylene glycol phenylether (meth)acrylate, polyethylene glycol-polypropylene glycol (meth)acrylate, polypropylene glycol (meth)acrylate, stearyl (meth)acrylate, ethoxylated phenol acrylate (Phenol (EO) acrylate), ethoxylated cresol (meth)acrylate, dipropylene glycol (meth)acrylate, ethoxylated phenyl(meth)acrylate, ethoxylated succinate (meth)acrylate, tert-butyl (meth)acrylate, tribromophenyl (meth)acrylate, ethoxylated tribromophenyl (meth)acrylate, tridodecyl (meth)acrylate, and tetrahydrofurfuryl (meth)acrylate.

9. The electronic apparatus of claim 1 , wherein the UV absorber comprises an UV-absorbing compound,
wherein the UV-absorbing compound comprises at least one UV absorbing unit represented by one selected from Formulae 1-1 to 1-4:

wherein, in Formulae 1-1 to 1-4,
CY 1 to CY 3 are each independently selected from a benzene group, a naphthalene group, an anthracene group, a pyrene group, and a phenanthrene group,
L 10 is —O—, —S—, S(═O) 2 —, —C(═O)—, —C(═O)O—, —C(═O)NH—, a C 1 -C 30 hydrocarbon group, a C 5 -C 60 carbocyclic group, or a C 2 -C 30 heterocyclic group,
m10 is an integer of 0 to 5, wherein L 10 is a single bond when m10 is 0,
R 10a and R 10b are each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a substituted or unsubstituted C 1 -C 60 alkyl group, a substituted or unsubstituted C 2 -C 60 alkenyl group, a substituted or unsubstituted C 2 -C 60 alkynyl group, a substituted or unsubstituted C 1 -C 60 alkoxy group, a substituted or unsubstituted C 3 -C 60 cyclo alkoxy group, a substituted or unsubstituted C 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 60 aryl group, a substituted or unsubstituted C 6 -C 60 aryloxy group, a substituted or unsubstituted C 6 -C 60 arylthio group, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropol

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Yohan
• Kim Yisu
• Yun Wonmin
• Lee Byoungduk
• Cho Yoonhyeung

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/8731 Primary

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K2101/10

  Triplet emission · CPC title

• C07C49/303

  to a six-membered ring · CPC title