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AssigneeLG Display Co., Ltd.
InventorsJong-Kwan Bin, Soon-Wook Cha, Seung-Jae Lee, In-Bum Song, Jung-Keun Kim, Do-Han Kim, Chun-Gun Park, Nam-Sung Cho
Estimating the term…
Disclosed is an organic light emitting material having the following chemical formula, for improving luminous efficiency, where R1, R2, R3 and R4 denote materials selected from an aromatic group with 6-24 carbon atoms (C6-C24), the group being independently substituted or unsubstituted, preferably, an aromatic group with 6-24 carbon atoms (C6-C24), the group consisting of trimethylsilane (TMS), CN, halogen (F, Cl, Br) alkyl groups with 1-4 carbon atoms (C1-C4).
An organic light emitting material having the following chemical formula,
An organic light emitting material having a compound selected from one of the following compounds,
An organic light emitting device comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
No references of this kind are recorded.
To carbon atoms of non-condensed six-membered aromatic rings: containing at least two cyano groups bound to the carbon skeleton
Polycyclic condensed: containing four rings
The aromatic ring being a non-condensed ring: containing more than one ether bond
Having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring: containing halogen
About 5 years 2 months of term left · ends 27 Dec 2031 (estimated)
Pursuant to 35 U.S.C. §119(a), this application claims the benefit of earlier filing date and right of priority to Korean Application No. 10-2008-0137517, filed on Dec. 30, 2008, the contents of which are incorporated by reference herein in its entirety.
1. Field of the Invention
The present invention relates to an organic light emitting material and an organic light emitting device using the same, and particularly, to an organic light emitting material capable of enhancing luminous efficiency (light emitting efficiency) of an organic light emitting device and lowering a driving voltage, and an organic light emitting device using the same.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
In the drawings:
FIG. 1 is a view showing a structure of an organic light emitting device in accordance with the present invention.
The present invention provides a blue fluorescent dopant with high color purity and high efficiency. The dopant according to the present invention is added to a host material to form a blue organic light emitting layer.
FIG. 1 shows a schematic structure of an organic light emitting device having an organic light emitting layer having a dopant added thereto according to the present invention.
As shown in FIG. 1, an anode 11 composed of a metal with high work function and a cathode 18 composed of a metal with low work function are formed on a substrate 10 formed of a transparent material, such as glass, and an organic light emitting layer 14 is inserted between the anode 11 and the cathode 18. Accordingly, hole is injected from the anode 11 to the organic light emitting layer 14 and electron is injected from the cathode 18.