Back to results
US 2024/0196723 A1Published application
Organometallic compound, organic light emitting diode and organic light emitting device having the compound
AssigneeLG Display Co., Ltd.
InventorsTae Ryang HONG, Na-Yeon LEE
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to an organometallic compound having the following structure of Chemical Formula 1, Ir(LA)m(LB)n, an organic light emitting diode (OLED) where the organometallic compound is applied to an emitting material layer and an organic light emitting device. The luminous efficiency, color purity and luminous lifespan of the OLED and the organic light emitting device can be improved.
Claims27
An organometallic compound represented by a structure of Chemical Formula 1:
- Ir(LA)m(LB)n [Chemical Formula 1]
- wherein, in the Chemical Formula 1,
- LA has the following structure of Chemical Formula 2;
- LB is an auxiliary ligand;
- m is 1, 2 or 3;
- n is 0, 1 or 2;
- and
- m+n is 3;
- wherein, in the Chemical Formula 2,
- each of X1 to X4 is independently CR1, N or a carbon atom linked to a hetero aromatic ring including Y2 and Y3, where at least one of X1 to X4 is CR1 or the carbon atom linked to the hetero aromatic ring including Y2 and Y3;
- X5 is CR4 or N;
- Y1 is O or S;
- one of Y2 and Y3 is a single bond and the other of Y2 and Y3 is O or S;
- each of R1 to R6 is independently hydrogen, halogen, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, an unsubstituted or substituted C1-C20 alkyl group, an unsubstituted or substituted C2-C20 alkenyl group, an unsubstituted or substituted C2-C20 alkynyl group, an unsubstituted or substituted C1-C20 alkoxy group, an unsubstituted or substituted C1-C20 alkyl amino group, an unsubstituted or substituted C1-C20 alkyl silyl group, an unsubstituted or substituted C4-C30 alicyclic group, an unsubstituted or substituted C3-C30 hetero alicyclic group, an unsubstituted or substituted C6-C30 aromatic group or an unsubstituted or substituted C3-C30 hetero aromatic group, where each R1 is identical to or different from each other when a1 is 2, 3 or 4, where each R2 is identical to or different from each other when a2 is 2, where each R4 is identical to or different from each other when a4 is 2, where each R5 is identical to or different from each other when a5 is 2, and where each R6 is identical to or different from each other when a6 is 2, 3 or 4;
- optionally,
- two adjacent R1 when a1 is 2, 3 or 4, and/or
- two adjacent R2 when a2 is 2, and/or
- two adjacent R4 when a4 is 2, and/or
- two adjacent R5 when a5 is 2, and/or
- two adjacent R6 when a6 is 2, 3 or 4
- are further linked together to form an unsubstituted or substituted C4-C20 alicyclic ring, an unsubstituted or substituted C3-C20 hetero alicyclic ring, an unsubstituted or substituted C6-C20 aromatic ring or an unsubstituted or substituted C3-C20 hetero aromatic ring;
- a1 is 0, 1, 2, 3 or 4;
- a2 is 0, 1 or 2;
- a3 is 0 or 1;
- a4 is 0, 1 or 2;
- a5 is 0, 1 or 2;
- and
- a6 is 0, 1, 2, 3 or 4.
25 more elements
An organic light emitting diode including:
- a first electrode;
- a second electrode facing the first electrode;
- and
- an emissive layer disposed between the first and second electrodes and including at least one emitting material layer,
- wherein the at least one emitting material layer includes an organometallic compound represented by a structure of Chemical Formula 1:
- Ir(LA)m(LB)n [Chemical Formula 1]
- wherein, in the Chemical Formula 1,
- LA has the following structure of Chemical Formula 2;
- LB is an auxiliary ligand;
- m is 1, 2 or 3;
- n is 0, 1 or 2;
- and
- m+n is 3;
- wherein, in the Chemical Formula 2,
- each of X1 to X4 is independently CR1, N or a carbon atom linked to a hetero aromatic ring including Y2 and Y3, where at least one of X1 to X4 is CR1 or the carbon atom linked to the hetero aromatic ring including Y2 and Y3;
- X5 is CR4 or N;
- Y1 is O or S;
- one of Y2 and Y3 is a single bond and the other of Y2 and Y3 is O or S;
- each of R1 to R6 is independently hydrogen, halogen, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, an unsubstituted or substituted C1-C20 alkyl group, an unsubstituted or substituted C2-C20 alkenyl group, an unsubstituted or substituted C2-C20 alkynyl group, an unsubstituted or substituted C1-C20 alkoxy group, an unsubstituted or substituted C1-C20 alkyl amino group, an unsubstituted or substituted C1-C20 alkyl silyl group, an unsubstituted or substituted C4-C30 alicyclic group, an unsubstituted or substituted C3-C30 hetero alicyclic group, an unsubstituted or substituted C6-C30 aromatic group or an unsubstituted or substituted C3-C30 hetero aromatic group, where each R1 is identical to or different from each other when a1 is 2, 3 or 4, where each R2 is identical to or different from each other when a2 is 2, where each R4 is identical to or different from each other when a4 is 2, where each R5 is identical to or different from each other when a5 is 2, and where each R6 is identical to or different from each other when a6 is 2, 3 or 4;
- optionally,
- two adjacent R1 when a1 is 2, 3 or 4, and/or
- two adjacent R2 when a2 is 2, and/or
- two adjacent R4 when a4 is 2, and/or
- two adjacent R5 when a5 is 2, and/or
- two adjacent R6 when a6 is 2, 3 or 4
- are further linked together to form an unsubstituted or substituted C4-C20 alicyclic ring, an unsubstituted or substituted C3-C20 hetero alicyclic ring, an unsubstituted or substituted C6-C20 aromatic ring or an unsubstituted or substituted C3-C20 hetero aromatic ring;
- a1 is 0, 1, 2, 3 or 4;
- a2 is 0, 1 or 2;
- a3 is 0 or 1;
- a4 is 0, 1 or 2;
- a5 is 0, 1 or 2;
- and
- a6 is 0, 1, 2, 3 or 4.
30 more elements
Dependencies are inferred from the claim text.