Organic light emitting diode and organic light emitting device having thereof
AssigneeLG Display Co., Ltd.
InventorsIn Bum SONG, Seung Hee YOON, Jeong Dae SEO
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Abstract
The present disclosure relates to an organic light emitting diode that includes at least one emitting material layer including an anthracene-based host and a boron-based dopant, at least one electron blocking layer including an amine-based compound substituted with at least one fused aromatic or hetero aromatic ring, and optionally at least one hole blocking layer including an azine-based compound or a benzimidazole-based compound. The organic light emitting diode has enhanced luminous efficiency as well as excellent luminous lifetime.
Claims34
An organic light emitting diode, comprising:
- a first electrode;
- a second electrode facing the first electrode;
- and
- a first emitting unit including a first emitting material layer disposed between the first and second electrodes and a first hole blocking layer disposed between the first emitting material layer and the second electrode,
- wherein the first emitting material layer includes a host having the following structure of Chemical Formula 1 and a dopant having the following structure of Chemical Formula 3, and the first hole blocking layer includes an azine-based compound having the following structure of Chemical Formula 11:
- wherein each of R1 and R2 is independently a C6˜C30 aryl group or a C5˜C30 hetero aryl group;
- each of L1 and L2 is independently a C6˜C30 arylene group;
- and each of a and b is an integer of 0 (zero) or 1;
- wherein each of R11 and R12 is independently a C1˜C20 alkyl group, a C6˜C30 aryl group, a C5˜C30 hetero aryl group or a C6˜C30 aryl amino group, or two adjacent groups among R11 or two adjacent groups among R12 form a fused aromatic or hetero aromatic ring;
- each of c and d is independently an integer of 0 (zero) to 4;
- R13 is a C1˜C10 alkyl group, a C6˜C30 aryl group, a C5˜C30 hetero aryl group or a C5˜C30 aromatic amino group;
- e is an integer of 0 (zero) to 3;
- each of X1 and X2 is independently oxygen (O) or NR14, wherein R14 is a C6˜C30 aryl group;
- wherein each of Y1 to Y5 is independently CR31 or nitrogen (N) and at least three among the Y1 to Y5 is nitrogen, wherein R31 is a C6˜C30 aryl group;
- L is a C6˜C30 arylene group;
- R32 is a C6˜C30 aryl group or a C5˜C30 hetero aryl group;
- R33 is hydrogen or two adjacent R32 form a fused aromatic ring;
- r is 0 (zero) or 1, s is 1 or 2 and t is an integer of 0 (zero) to 4.
An organic light emitting device, comprising:
- a substrate;
- and
- an organic light emitting diode including a first electrode, a second electrode facing the first electrode and a first emitting unit including a first emitting material layer disposed between the first and second electrodes and a first hole blocking layer disposed between the first emitting material layer and the second electrode, and disposed over the substrate,
- wherein the first emitting material layer includes a host having the following structure of Chemical Formula 1 and a dopant having the following structure of Chemical Formula 3, and the first hole blocking layer includes an azine-based compound having the following structure of Chemical Formula 11:
- wherein each of R1 and R2 is independently a C6˜C30 aryl group or a C5˜C30 hetero aryl group;
- each of L1 and L2 is independently a C6˜C30 arylene group;
- and each of a and b is an integer of 0 (zero) or 1;
- wherein each of R11 and R12 is independently a C1˜C20 alkyl group, a C6˜C30 aryl group, a C5˜C30 hetero aryl group or a C6˜C30 aryl amino group, or two adjacent groups among R11 or two adjacent groups among R12 form a fused aromatic or hetero aromatic ring;
- each of c and d is independently an integer of 0 (zero) to 4;
- R13 is a C1˜C10 alkyl group, a C6˜C30 aryl group, a C5˜C30 hetero aryl group or a C5˜C30 aromatic amino group;
- e is an integer of 0 (zero) to 3;
- each of X1 and X2 is independently oxygen (O) or NR14, wherein R14 is a C6˜C30 aryl group;
- wherein each of Y1 to Y5 is independently CR31 or nitrogen (N) and at least three among the Y1 to Y5 is nitrogen, wherein R31 is a C6˜C30 aryl group;
- L is a C6˜C30 arylene group;
- R32 is a C6˜C30 aryl group or a C5˜C30 hetero aryl group;
- R33 is hydrogen or two adjacent R32 form a fused aromatic ring;
- r is 0 (zero) or 1, s is 1 or 2 and t is an integer of 0 (zero) to 4.
The organic light emitting device of claim 27, the at least one hole blocking layer of the first hole blocking layer and the second hole blocking layer further comprises a benzimidazole-based compound having the following structure of Chemical Formula 13:
- wherein Ar is a C10˜C30 arylene group;
- R41 is a C6˜C30 aryl group or a C5˜C30 hetero aryl group;
- and R42 is a C1˜C10 to alkyl group or a C6˜C30 aryl group.
Dependencies are inferred from the claim text.