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White light-emitting organic electroluminescent device for back light and liquid crystal display device using itself
White light-emitting organic electroluminescent device for back light and liquid crystal display device using itself
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机译:用于背光的发白光的有机电致发光器件和使用其的液晶显示器件
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摘要
A white light-emitting organic electroluminescent element for a backlight and a liquid crystal display device using the same. The white light-emitting organic electroluminescent element is useful for a backlight, in which two or three color light-emitting layers are laminated in the form of a thin film, and the liquid crystal display device reproduces natural color tones, resulting from formation of the element at the rear of a liquid crystal display panel. The white light-emitting organic electroluminescent element comprises an anode; a hole injecting layer; a hole transporting layer; an organic electroluminescent layer consisting of two or three color light-emitting layers and one or more controlling layers, the controlling layer being made of a blocking material for controlling the stream of electrons between the light-emitting layers; an electron transporting layer; and a cathode. The white light-emitting organic electroluminescent element prepared according to the present invention can be used instead of a conventional backlight, and in particular, can be applied to a liquid crystal display device for more distinct natural color reproduction.
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