Candle-like organic light-emitting diodes

Abstract

The present invention relates to a candle-like organic light emitting diode, which comprises: a first conductive layer, a hole injection layer, a hole transport layer, a first host light emitting layer, a second host light emitting layer, an electron transport layer, an electron injection layer, and a second conductive layer; in particular, in the present invention, the first host light-emitting layer and the second host light-emitting layer are doped by doping a plurality of candle complementary color dyes, so that the first host light-emitting layer The light-emitting layer emits the first color light and the second host light-emitting layer emits the second color light; in this way, through the light mixing of the first color light and the second color light, the candle-like organic light emitting diode of the present invention can emit high color rendering, The candle-like light with low color temperature and high efficiency is suitable for use as a reading light source or a bedside light source, so that the user's eyes can read with a comfortable feeling.

Description

technical field [0001] The invention relates to an organic light-emitting diode, in particular to a candle-like organic light-emitting diode with high efficiency, high color rendering and low color temperature. Background technique [0002] In 1987, C.W.Tang and S.A.VanSlyke of Kodak published the creation of organic light emitting diodes (Organic Light Emitting Device, OLED). Tang and VanSlyke used vacuum evaporation to separate hole transport materials and electron transport materials, such as Alq3 , plated on ITO glass, and then vapor-deposit a layer of metal electrodes, so that it has self-illumination, high brightness, high-speed response, light weight, thin thickness, low power consumption, wide viewing angle, and flexibility , and the production of full-color organic light-emitting diodes (OLEDs). [0003] At present, in the conventional organic electroluminescent diodes, in addition to the light-emitting material layer, other interlayers are added between the anode ...

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Problems solved by technology

[0004] The above-mentioned existing conventional organic electroluminescent diode 1' is a high-efficiency organic electroluminescent diode; however, it is a white light organic electroluminescent diode, which is only suitable for use as a lighting source; if the white light has Electromechanical light-emitting diodes are used as reading light sources or bedside light sources, and their high brightness and high color temperature will cause discomfort to the eyes. In severe cases, it will affect the secretion of melatonin in the human body and cause insomnia

[0005] Therefore, in view of the fact that the white light emitted by the conventional organic light-emitting diodes is not suitable for use as a reading light source or a bedside light source, the inventor of this case tried his best to research and create, and finally developed a kind of candle light of the present invention. organic light emitting diode

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