White light LED (Light Emitting Diode) capable of lighting by triggering carbon points through blue light, and preparation method thereof

A blue light excitation, LED chip technology, applied in the field of white light LED, white light LED and its preparation, can solve the problems of poor stability, low color rendering property of white light LED, narrow color gamut, etc., and achieve the effect of avoiding sedimentation and improving luminous efficiency

Inactive Publication Date: 2013-04-24
SHANDONG UNIV
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  • Abstract
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Problems solved by technology

[0005] Aiming at the problems existing in the existing white light LED technology, the present invention provides a white light LED in which blue light sti

Method used

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  • White light LED (Light Emitting Diode) capable of lighting by triggering carbon points through blue light, and preparation method thereof
  • White light LED (Light Emitting Diode) capable of lighting by triggering carbon points through blue light, and preparation method thereof
  • White light LED (Light Emitting Diode) capable of lighting by triggering carbon points through blue light, and preparation method thereof

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[0024] Such as figure 1 As shown, the white LED with blue excitation carbon dots to emit light of the present invention includes an insulating base 1, a bowl-shaped reflector 3, a blue LED chip 5 and a lens 8. The bowl-shaped reflector 3 is arranged on the insulating base 1, and the bowl-shaped reflector There is a thermal conductive sheet 2 between 3 and the insulating base 1, the blue LED chip is fixed in the bowl-shaped reflector 3, the blue LED chip is covered with silane functionalized carbon dots 6, and the insulating base 1 is provided with an electrode 7 on each side, The two electrodes 7 are connected to the blue LED chip 5 through a gold wire 4 respectively. A lens 8 is provided on the outside of the bowl-shaped reflector 3, and the lens 8 is filled with a transparent packaging material 9 to connect the two electrodes 7 to the gold wire 4 The dots, the gold wire 4, the bowl-shaped reflector 3, the silane functionalized carbon dots 6 and the blue LED chip 5 are wrapped ...

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Abstract

The invention discloses a white light LED (Light Emitting Diode) capable of lighting by triggering carbon points through blue light, and a preparation method thereof. The white light LED comprises an insulating base, a bowl-shaped reflection mirror, a blue light LED chip and a lens, wherein the bowl-shaped reflection mirror is arranged on the insulating base; a heat conduction sheet is arranged between the bowl-shaped reflection mirror and the insulating base; the blue light LED chip is fixed in the bowl-shaped reflection mirror; the silane functionalized carbon points are covered on the blue light LED chip; the lens is arranged outside the silicon bowl-shaped reflection mirror; a transparent sealing material is filled into the lens; organic multielement acid is fed into silane liquid which is boiled and flows back under the protection of nitrogen, so that the organic multielement acid is subjected to pyrolysis so as to synthesize the silane functionalized carbon points; the blue LED chip is fixed inside the bowl-shaped reflection mirror; the silane functionalized carbon points are coated on the blue LED chip and are cured; the lens is arranged outside the bowl-shaped reflection mirror; and the lens is filled with the transparent sealing material. The white light LED and the preparation method can be beneficial for improving the light emission efficiency, and the use stability and prolonging the service life of an LED.

Description

technical field [0001] The invention relates to a white light LED and a preparation method thereof, in particular to a white light LED produced by exciting silane functionalized carbon dots to emit light through a blue light LED, and belongs to the technical field of semiconductor lighting. Background technique [0002] LED is a new type of solid-state light source, which has the advantages of energy saving, firmness, environmental protection, long life and small size. It has become a research hotspot in the fields of optoelectronics and lighting. Among them, white LEDs have become a new generation of lighting sources, widely used in large-scale display screens, landscape lighting, automotive lights, liquid crystal display backlight and decoration and other fields. [0003] At present, white light LEDs are mainly obtained by combining three primary color LED chips and converting wavelengths of phosphors, and the latter is currently the mainstream technology for obtaining whi...

Claims

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Application Information

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IPC IPC(8): H01L33/50H01L33/48
CPCH01L2224/8592H01L2224/48091H01L2924/00014
Inventor 郝霄鹏尹正茂吴拥中谢政刘春艳刘晓燕徐现刚
Owner SHANDONG UNIV
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