Patent application EP20182660A (EP), filed 2020-06-26
Publication number: EP3758083A1
Title: ORGANIC ELECTROLUMINESCENCE DEVICE AND POLYCYCLIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE
Abstract: [0001]    An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a polycyclic compound represented by Formula 1 and shows high emission efficiency and excellent color reproducibility.

<img class="EMIRef" id="688965070-ia01" />
IPC codes: H10K  99/    00            A I
C07F   5/    02            A I
C09K  11/    06            A I
H10K  85/    30            A I
H10K  85/    60            A I
Claims: number: 1
text: An organic electroluminescence device, comprising:
number: 2
text: The organic electroluminescence device of claim 1, wherein:
number: 3
text: The organic electroluminescence device of claim 1 or claim 2, wherein the compound represented by Formula 1 is represented by Formula 2:
number: 4
text: The organic electroluminescence device of any one of claims 1 to 3, wherein Y1, Y2, and Y3 are the same, and/or, wherein at least one selected from Y1, Y2, and Y3 is *-NRa-*, and the remainder is *-O-* or *-S-*.
number: 5
text: The organic electroluminescence device of any one of claims 1 to 4, wherein the emission layer is to emit delayed fluorescence.
number: 6
text: The organic electroluminescence device of any one of claims 1 to 5, wherein:
number: 7
text: The organic electroluminescence device of any one of claims 1 to 6, wherein the emission layer is to emit light with a central wavelength of about 430 nm to about 470 nm.
number: 8
text: The organic electroluminescence device of any one of claims 1 to 7, wherein the emission layer comprises at least one selected from polycyclic compounds in Compound Group 1:
number: 10
text: The polycyclic compound of claim 9, wherein:
number: 11
text: The polycyclic compound of claim 9 or claim 10, wherein the compound represented by Formula 1 is represented by Formula 2:
number: 12
text: The polycyclic compound of claim 11, wherein Y1, Y2, and Y3 are the same, and/or, wherein at least one selected from Y1, Y2, and Y3 is *-NRa-*, and the remainder is *-O-*, or *-S-*.
number: 13
text: The polycyclic compound of any one of claims 9 to 12, wherein the polycyclic compound represented by Formula 1 is a blue dopant to emit blue light having a central wavelength of about 470 nm or less.
number: 14
text: The polycyclic compound of any one of claims 9 to 13, wherein a lowest triplet excitation energy level (T<1> level) of the polycyclic compound represented by Formula 1 is greater than about 2.6 eV, and/or, wherein the polycyclic compound represented by Formula 1 is a material to emit thermally activated delayed fluorescence.
number: 15
text: The polycyclic compound of any one of claims 9 to 14, wherein Formula 1 is selected from compounds represented in Compound Group 1:
Office action: search_report, dated 2020-12-30
Rejection reasons: novelty_epc_54
Prior art cited: ref_id: CN109411634A
ref_type: patent
severity: background
ref_id: CN109192874A
ref_type: patent
severity: background
ref_id: CN109192874
ref_type: patent
severity: novelty_destroying
ref_id: CN109411634
ref_type: patent
severity: novelty_destroying
Final disposition: pending (2020-12-30)