Organic light-emitting display apparatus

Patent metadata

Field	Value
Publication number	US-10276828-B2
Application number	US-201615337875-A
Country	US
Kind code	B2
Filing date	Oct 28, 2016
Priority date	Nov 30, 2015
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

An organic light-emitting display (OLED) apparatus includes an organic light-emitting device including an anode, an organic light-emitting layer, and a cathode. The OLED apparatus also includes an encapsulation element covering the organic light-emitting device, and a particular layer disposed between the organic light-emitting device and the encapsulation element. The particular layer is doped with a light absorption material that absorbs light having a wavelength shorter than a wavelength of light emitted from the organic light-emitting device so that variation in characteristics of the organic light-emitting device by external light is reduced. Accordingly, the lifespan of the OLED apparatus can be improved.

First claim

What is claimed is:

1. An organic light-emitting display (OLED) apparatus comprising:
an organic light-emitting device comprising an anode, an organic light-emitting layer, and a cathode;
an encapsulation element covering the organic light-emitting device; and
a particular layer disposed between the organic light-emitting device and the encapsulation element,
wherein the particular layer comprises a light absorption material that absorbs light having a wavelength shorter than a wavelength of light emitted from the organic light-emitting device so that variation in characteristics of the organic light-emitting device by external light is reduced and
wherein the particular layer is in contact with the cathode so as to suppress the cathode from being damaged by moisture or oxygen.

2. The OLED apparatus of claim 1 , wherein the light absorption material absorbs light having a wavelength equal to or less than 420 nm.

3. The OLED apparatus of claim 1 , wherein the particular layer comprises the light absorption material at a concentration of 1 wt % to 50 wt %.

4. The OLED apparatus of claim 1 , wherein the particular layer covers the cathode.

5. The OLED apparatus of claim 1 , wherein the light absorption material is at least one among: a hydroxy benzophenone-based compound; a hydroxy phenylbenzotriazole-based compound; a hindered amines-based compound; an organic metal compound containing one metal of iron (Fe), nickel (Ni) and cobalt (Co); a salicylate-based compound; a cinnamate derivative; a resorcinol monobenzoates-based compound; an oxanilides-based compound; a hydroxy benzoates-based compound; an organic or inorganic pigment; carbon black; a coumarin-based compound; a stilbene derivative; a benzoxazolyl-based compound; a benzimidazolyl-based compound; a naphthylimide-based compound; a diaminostilbene sulfonate-based compound; a triazine stilbene-based compound; a phenyl esters-based compound; a benzotriazol-based compound; an S-triazine-based compound; a hydroxyphenyl derivative of a benzoxazole-based compound; a hexamethylphosphoric triamide-based compound; a benzylidenmalonate-based compound; an aliphaticamin or amino alcohol-based derivative; a nitroaromatic compound; a substituted acrylonitrile-based compound; a ferrocene-based compound; a nitrophenylazophenol-based compound; an azo-based compound; a polyene-based polymer derivative; a piperidine-based compound; a piperidinyloxy-based compound; a boron trifluoride-based compound; a thiadiazol-based compound; and a phosphonate-based compound.

6. An organic light-emitting display (OLED) apparatus comprising:
an organic light-emitting device disposed on a substrate, the organic light-emitting device comprising an anode, an organic light-emitting layer, and a cathode; and
a particular layer disposed on the organic light-emitting device to cover the cathode, wherein the particular layer contains a light absorption material and
wherein the particular layer is disposed to be in contact with the cathode, and the particular layer is configured to suppress the cathode from being oxidized by moisture or oxygen and suppress the organic light-emitting layer from being damaged by external light.

7. The OLED apparatus of claim 6 , wherein the light absorption material is at least one among: a hydroxy benzophenone-based compound; a hydroxy phenylbenzotriazole-based compound; a hindered amines-based compound; an organic metal compound containing one metal of iron (Fe), nickel (Ni) and cobalt (Co); a salicylate-based compound; a cinnamate derivative; a resorcinol monobenzoates-based compound; an oxanilides-based compound; a hydroxy benzoates-based compound; an organic or inorganic pigment; carbon black; a coumarin-based compound; a stilbene derivative; a benzoxazolyl-based compound; a benzimidazolyl-based compound; a naphthylimide-based compound; a diaminostilbene sulfonate-based compound; a triazine stilbene-based compound; a phenyl esters-based compound; a benzotriazol-based compound; an S-triazine-based compound; a hydroxyphenyl derivative of a benzoxazole-based compound; a hexamethylphosphoric triamide-based compound; a benzylidenmalonate-based compound; an aliphaticamin or amino alcohol-based derivative; a nitroaromatic compound; a substituted acrylonitrile-based compound; a ferrocene-based compound; a nitrophenylazophenol-based compound; an azo-based compound; a polyene-based polymer derivative; a piperidine-based compound; a piperidinyloxy-based compound; a boron trifluoride-based compound; a thiadiazol-based compound; and a phosphonate-based compound.

8. The OLED apparatus of claim 6 , wherein the light absorption material absorbs light having a wavelength shorter than a wavelength of light emitted from the organic light-emitting device.

9. The OLED apparatus of claim 8 , wherein the light absorption material absorbs light having a wavelength equal to or less than 420 nm.

10. The OLED apparatus of claim 6 , wherein the particular layer comprises the light absorption material at a concentration of 1 wt % to 50 wt %.

11. An organic light-emitting display (OLED) apparatus comprising:
an organic light-emitting device disposed on a substrate, the organic light-emitting device comprising an anode, an organic light-emitting layer, and a cathode; and
a particular layer disposed on the organic light-emitting device to cover the cathode, wherein the particular layer contains a light absorption material, wherein the light absorption material is at least one among: a hydroxy benzophenone-based compound; a hydroxy phenylbenzotriazole-based compound; a hindered amines-based compound; a salicylate-based compound; a cinnamate derivative; a resorcinol monobenzoates-based compound; an oxanilides-based compound; a hydroxy benzoates-based compound; an organic or inorganic pigment; carbon black; a coumarin-based compound; a stilbene derivative; a benzoxazolyl-based compound; a benzimidazolyl-based compound; a naphthylimide-based compound; a diaminostilbene sulfonate-based compound; a triazine stilbene-based compound; a phenyl esters-based compound; a benzotriazol-based compound; an S-triazine-based compound; a hydroxyphenyl derivative of a benzoxazole-based compound; a hexamethylphosphoric triamide-based compound; a benzylidenmalonate-based compound; an aliphaticamin or amino alcohol-based derivative; a nitroaromatic compound; a substituted acrylonitrile-based compound; a ferrocene-based compound; a nitrophenylazophenol-based compound; an azo-based compound; a polyene-based polymer derivative; a piperidine-based compound; a piperidinyloxy-based compound; a boron trifluoride-based compound; a thiadiazol-based compound; and a phosphonate-based compound.

Assignees

• Lg Display Co Ltd

Inventors

• Kwon Sunkap
• Yoo Namseok

Classifications

• H01L51/5284

  Electricity · mapped topic

• H01L51/5253 Primary

  Electricity · mapped topic

• H01L51/5281

  Electricity · mapped topic

• H01L51/5221

  Electricity · mapped topic

• H10K59/873

  Encapsulations · CPC title