Organic light emitting device
AssigneeLG Display Co., Ltd.
InventorsSu-Na Choi, In-Bum Song, Jeong-Dae Seo
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to an organic light emitting device. In particular, the present disclosure relates to an organic light emitting diode and an organic light emitting device each of which includes at least one emitting material layer comprising a boron-based dopant and an anthracene-based host substituted with at least one deuterium, at least one electron blocking layer including an amine-based compound substituted with at least one spiro aryl group, and optionally at least one hole blocking layer including an azine-based or a benzimidazole-based compound. The organic light emitting diode and the organic light emitting device has improved luminous efficiency and enhanced luminous lifespan.
Claims13
An organic light emitting device, comprising:
- a substrate;
- and
- an organic light emitting diode over the substrate, the organic light emitting diode including a first electrode, a second electrode facing the first electrode and an emissive layer disposed between the first electrode and the second electrode,
- wherein the emissive layer comprises a first emitting material layer including a first dopant and a first host, a first electron blocking layer disposed between the first electrode and the first emitting material layer and a first hole blocking layer disposed between the first emitting material layer and the second electrode,
- wherein the first emitting material layer emits blue light,
- wherein the first dopant includes a boron-based compound selected from the group consisting of:
- wherein the first host includes an anthracene-based compound having the following structure of Formula 3,
- wherein the first electron blocking layer includes an amine-based compound having the following structure of Formula 5:
- wherein each of Ar1 and Ar2 is independently a C6-C30 aryl group or a C5-C30 hetero aryl group;
- L is a single bond, a C6-C20 arylene group or a C5-C20 hetero arylene group;
- a is an integer of 0 to 8;
- each of b, c and d is independently an integer of 0 to 30, wherein at least one of a, b, c and d is a positive integer;
- wherein L3 is C6-C30 arylene;
- o is 0 or 1;
- each of R121 and R122 is independently C6-C30 aryl or C5-C30 hetero aryl, wherein each of the C6-C30 aryl and the C5-C30 hetero aryl is independently unsubstituted or substituted with at least one of C1-C10 alkyl and C6-C30 aryl,
- wherein the first hole blocking layer includes an azine-based compound,
- wherein the azine-based compound includes a compound that is selected from the group consisting of:
- (i) compound E15, (ii) compound E16, (iii) compound E17, (iv) compound E18, and (v) any combination of (i) to (iv):
Dependencies are inferred from the claim text.