Abstract:
PURPOSE: An organic electroluminescence device is provided to be capable of realizing a high efficiency by making holes injected from an anode electrode easily. CONSTITUTION: An anode electrode(110) is formed on a substrate(100), and a cathode electrode(180) is opposite to the anode electrode. A luminescence layer(150) is interposed between the anode electrode and the cathode electrode. A hole injection layer(120) and a hole transport layer(130) are sequentially interposed between the anode electrode and the luminescence layer. An electron transport layer(160) and an electron injection layer(170) are sequentially interposed between the luminescence layer and the cathode layer. A buffer layer(140) is interposed between the luminescence layer and the hole transport layer and makes holes smoothly flow from the hole transport layer to the luminescence layer.
Abstract:
PURPOSE: Provided are an organic, electroluminescent polymer compound which has high luminescence efficiency and excellent adhesion to insulation layer or metal electrode, and an organic, electroluminescent device comprising the same. CONSTITUTION: The organic, electroluminescent polymer compound has a structure represented by formula 1. In the formula 1, Ar is an aryl group having polar side chain, R3 and R4, which are same or different, represent a linear or branched alkyl group having C1-C20, each of x and y represents a ratio of each monomer and 0.01
Abstract:
PURPOSE: An organic electroluminescent device having a double insulating layer is provided to enhance the luminescence and the durability by using the electrical characteristic between a luminous layer and an electrode by inserting a double insulating layer between the luminous layer and the electrode. CONSTITUTION: An organic electroluminescent device comprises an anode(12) for injecting the hole into the substrate(11), an organic luminous layer(15) for emitting light in response to the recombination of injected holes and injected electrons, a cathode(19) for injecting an electron, the first insulating layer(14) placed between the organic luminous layer and the anode, and the second insulating layer(17) for performing the electron blocking. The first insulating layer prevents the electrons from flowing organic luminous layer, which increases the electroluminescent efficiency. The second insulating layer increases the recombination probability.
Abstract:
본발명의일 실시예에따른유기발광다이오드는, 기판상에순차적으로적층된하부전극, 유기발광층및 상부전극; 상기상부전극상에유전물질을포함하는버퍼층; 상기버퍼층상에상기버퍼층과표면에너지가다른재료로형성된핵층; 및상기핵층상에, 상기핵층으로부터이방성성장된복수개의다각형의광산란결정들을포함하는광산란층을포함할수 있다. 이때, 각각의상기광산란결정들은 150nm 내지 1μm의폭 및 150nm 내지 1μm의높이를가질수 있다.