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Drganic electroluminescent device

An electroluminescence, organic technology, applied in the field of organic electroluminescence devices, to achieve the effects of prolonging the service life, reducing the working temperature, and improving the luminous efficiency

Inactive Publication Date: 2004-09-15
彭冠璋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above known OLED structure can achieve the effect of projecting light source, it still has a lot of room for improvement

Method used

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  • Drganic electroluminescent device
  • Drganic electroluminescent device

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Experimental program
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Embodiment Construction

[0042] First, see figure 2 , is a structural sectional view of a preferred embodiment of the present invention. As shown in the figure, the organic electroluminescent device 20 of the present invention mainly forms a first conductive layer 23 (such as an anode; ITO) on a light-transmitting substrate 21 by evaporation or sputtering, and on the anode 23 A first illuminant 27 (1st emitter) that can generate a first colored light source is formed on the surface, and a second illuminant 37 that can generate a second colored light source is formed on the upper surface of the first illuminant 27, and the stacking method is formed in this way There are a plurality of illuminants until the last Nth illuminant 97 which can generate an Nth colored light source. Moreover, a second conductive layer (such as a cathode; metals such as Al, Mg, Li) is provided on the upper surface of the N luminous body 97, and a supply voltage is connected between the first conductive layer 23 and the secon...

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Abstract

Multiple illuminants are existed between anode and cathode in the device. Each illuminant projects a correspondent color light source. Color light sources are stacked in sequence. When supplied voltage starts to take effect, in condition of not attenuating total luminescence bright, total effect superposed color light sources generated from each illuminant can reduce current density passing through parts effectively. Thus, better luminous efficiency can be obtained, temperature of working parts is reduced and service life is prolonged.

Description

technical field [0001] The invention relates to a light emitting device, in particular to an organic electroluminescent device capable of increasing luminous efficiency. Background technique [0002] Organic light emitting device (Organic Light Emitting Device; OLED) since 1987 by Kodak's C.W.Tang and S.A.VanSlyke using vacuum evaporation method of three (8-quinolinol) aluminum Alq3 and HTM2 (1,1-bis[ (di-4-tolylamino)phenyl]cyclohexane) After forming a heterogeneous OLED component, due to its self-luminescence, high response speed, light weight, thin thickness, low power consumption, wide viewing angle, high brightness, and With the advantages of full color and simple manufacturing process, it is regarded as a star product in the display industry. [0003] see figure 1 , is a cross-sectional view of the structure of a known OLED. The organic electroluminescent device (OLED) 10 is mainly evaporated on a transparent substrate 11 to form a transparent and conductive anode (I...

Claims

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Application Information

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IPC IPC(8): H05B33/14
Inventor 彭冠璋
Owner 彭冠璋