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US 11,903,307 B2Granted
Organic compound, and light-emitting diode and light-emitting device including the same
AssigneeLG Display Co., Ltd.
InventorsYoung-Ju Ryu, Kyu-Nam Kim, Jae-Hyun Park
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Abstract
Compounds, and polymers thereof, useful dopants for light emitting diodes and light emitting display devices are disclosed. The compounds have the following structure Formula 1: wherein R1, R2, R3, R4, L1, L2, L3, L4, a, b, c and d are as defined herein. Light emitting diodes including compounds of Formula 1 (and polymers thereof, i.e., compounds of Formula 3), light emitting devices including the same as well as methods associated with preparation and use of such compounds, polymers and devices are also provided.
Claims10
A light-emitting diode, comprising:
- a first electrode;
- a hole injection layer;
- a hole transport layer;
- an emitting material layer;
- an electron transport layer;
- and
- a second electrode,
- wherein the hole transport layer comprises a cross-linked compound derived from a compound having the following structure of Formula 1:
- wherein:
- R1 and R2 are each independently
- R3 and R4 are each independently
- L1, L2, L3, and L4 are each independently
- a and b are each independently 0 or 1;
- c and d are each independently 1 or 2, and
- wherein:
- the hole injection layer consists of poly(ethylenedioxythiophene):polystyrenesulfonate;
- the hole transport layer comprises:
- a first hole transport layer over the hole injection layer, and
- a second hole transport layer over the first hole transport layer;
- and
- the second hole transport layer consists of the cross-linked compound.
18 more elements
Dependencies are inferred from the claim text.