Patent ID: 7952273
Filing Date: 2011-05-31
Classification: H01L

Abstract:
1. An organic light emitting diode (OLED) device, comprising: a substrate; an anode formed on the substrate; a first organic thin layer formed on the anode; an organic emission layer formed on the first organic thin layer; a second organic thin layer formed on the organic emission layer; and a cathode formed on the second organic thin layer, wherein: the first and second organic thin layers are formed in a single layer or a multi-layer, and at least a part of at least one of the first and second organic thin layers is doped with or formed of Lithium Benzoate; the first organic thin layer includes a hole injection layer, or a hole injection layer and a hole transport layer; the second organic thin layer includes a hole blocking layer and at least one selected from the group consisting of an electron injection layer and an electron transport layer; and the hole blocking layer includes at least one selected from the group consisting of BAlq, BCP, CF-X, TAZ and spiro-TAZ, and is doped with Lithium Benzoate.