Organic light emitting diode and its producing method

A light-emitting diode, organic technology, used in semiconductor/solid-state device manufacturing, electrical components, electrical solid-state devices, etc., can solve the problems of complex process, low yield, and many defects, and achieve simple process, extended life, and good white balance. Effect

Active Publication Date: 2008-10-22
TRULY SEMICON
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  • Abstract
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Problems solved by technology

Due to the different luminescent materials, in order to achieve the best effect on the efficiency and life of RGB devices, other functional layers with different materials or different thicknesses have to be used, and devices with different structures, such as figure 1 The general full-color OLED production flow chart of the general full-color OLED, three parallel hole transport functional layers 11, 14, 17, three parallel light emitting functional layers 12, 15, 18, three parallel electron transport functional layers of RGB devices need to be evaporated respectively during production. Functional layers 13, 16, and 19 have complex manufacturing processes, many defects during production, and low yield

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  • Organic light emitting diode and its producing method
  • Organic light emitting diode and its producing method
  • Organic light emitting diode and its producing method

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Embodiment Construction

[0020] The full-color organic light-emitting diode of the present invention is mainly composed of two electrodes, the cathode and the anode, and an organic functional layer located between the two electrodes, wherein the organic functional layer includes a hole-transporting functional layer, three light-emitting functional layers of red, green and blue, and an electron-transporting functional layer. , the above-mentioned three independent light-emitting functional layers of red, green and blue all use the same host material, the main peak of the visible light spectrum of the electroluminescence of the host material is less than 480nm, and the energy gap is between 2.8ev~4ev, and each light-emitting functional layer is correspondingly doped to emit 400~ Luminescent materials with different objects within the wavelength range of 700nm; the weight ratio of the object material to the host material in each light-emitting functional layer is between 0.1% and 10%, and the object can be...

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Abstract

This invention discloses a full color organic LED, in which, the RGB light emission layer in the organic function layer is composed of a same kind of light emission material doped with different object light emission materials, the cavity transmission function and an electronic transmission function layer are in the same thickness, and the manufacturing method of the OLED includes: 1, finishing the evaporation of the cavity transmission function layer at one run on a base plate with a large open-end mask, 2, evaporating the RGB light emission function layer with fine masks separately, 3, evaporating the electronic transmission function layer at one run with a large open-end mask, 4, evaporating the back electrode with large open-end mask, 5, connecting the base plate with a package cover with a drier with water and oxygen absorption function.

Description

technical field [0001] The invention relates to an organic light emitting diode, in particular to a full-color and white light organic light emitting diode and a manufacturing method thereof. Background technique [0002] Organic Light-Emitting Diode (OLED for short) is a new type of flat-panel display at present, because it has many advantages such as active light emission, high contrast, can be thinned, and fast response speed, it is recognized as the main force of the next-generation display. The structure of an organic light-emitting diode (OLED) generally includes: a substrate, an anode, a cathode, and an organic functional layer. Its light-emitting principle is to deposit a very thin multi-layer organic material between the front and rear electrodes 1 and 20, and then drive it with direct current to emit light. The organic functional layer of an organic light-emitting diode (OLED) generally consists of three functional layers, namely a hole transport functional layer (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L21/82
Inventor 曹绪文苏初榜
Owner TRULY SEMICON
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