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US 7,803,469 B2Granted
White organic light emitting diode and method for manufacturing the same
AssigneeSamsung Mobile Display Co., Ltd.
InventorsJun Yeob Lee, Mi Kyung Kim
Life of this patent
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Abstract
A white organic light emitting diode (OLED) includes an emission layer that includes a blue emission layer and an emission layer excluding blue. The emission layer excluding blue includes a phosphorescent material and a mixture of a hole transporting material and electron transporting material.
Claims17
A white organic light emitting diode, comprising:
- an emission layer arranged between a first electrode and a second electrode,
- wherein the emission layer comprises a blue emission layer and an emission layer excluding blue, the emission layer being capable of emitting white light,
- wherein the emission layer excluding blue comprises a phosphorescent material and a mixture comprising a hole transporting material and an electron transporting material, and
- wherein the blue emission layer comprises at least one material selected from the group consisting of Flrpic, biphenylanthracene, and 4,4′-bis(diphenylamino)stilbene.
1 more element
A method of manufacturing a white organic light emitting diode, the method comprising:
- forming a first electrode on a substrate;
- forming a blue emission layer on the first electrode;
- forming an emission layer excluding blue on the blue emission layer;
- and
- forming a second electrode on the emission layer excluding blue,
- wherein the emission layer excluding blue is formed by doping a mixture of hole transporting material and electron transporting material with phosphorescent material, and
- wherein the blue emission layer comprises at least one material selected from the group consisting of Flrpic, biphenylanthracene, and 4,4′-bis(diphenylamino)stilbene.
4 more elements
Dependencies are inferred from the claim text.