Patent ID: 11903307
Assignee: LG DISPLAY CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 0:
1. 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.