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Three wave length LED structure

A LED structure, three-wavelength technology, applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve the problems of inability to completely replace white light sources, inability to change light color, poor color rendering of white light, etc.

Inactive Publication Date: 2007-05-30
ILEDM PHOTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, with the existing technology, the light-emitting diodes can only emit white light purely for visual effects. This white light is only a mixture of blue light and yellow light, lacking red light, and it cannot be changed after the finished product is made. Its light color; moreover, the color temperature adjustment of the white light emitting diode packaging structure in the prior art is not complete, especially it cannot reach the warm color light part with a color temperature below 3500K, and the white light emitted at the same time has extremely poor color rendering and cannot completely replace the light in daily life. white light source

Method used

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Embodiment Construction

[0050] In order to clarify the structure of the three-wavelength LED of the present invention, its structure and operation will be described in more detail below with examples and drawings.

[0051] Please refer to FIG. 3 , which is an embodiment of applying the three-wavelength LED structure of the present invention to a bulb-type LED packaging structure.

[0052] As shown in Figure 3, in this embodiment, a blue light emitting diode chip 25 with a wavelength of 420 to 475nm and a green light emitting diode chip with a wavelength of 495 to 550nm are arranged in a crystal cup 241 formed at the end of a lead support 24. 26, and the two LED chips are respectively connected to another lead frame 29 by bonding wires 27, 28, so that the two LED chips 25, 26 are electrically connected to the lead frame 29 respectively.

[0053] Next, a red fluorescent layer 30 is filled in the crystal cup 241 to cover the two LED chips 25, 26. The red fluorescent layer 30 is made of CaS:Eu 2+ , or S...

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Abstract

This invention provides one three-length wave LED structure, which uses blue light and green light diode chip as light source and uses red fluorescence layer as light conversation layer, wherein, it matches blue light diode chip and green chip number to change current and to adjust red fluorescence agent chemical object volume to make this invention process color temperature as to adjust white light LED changing with time.

Description

technical field [0001] The invention relates to the field of light-emitting diodes, in particular to a three-wavelength LED structure. Background technique [0002] LED light bulb is a common high-efficiency light-emitting component, please refer to Figure 1, which is a bulb-type single-color light-emitting diode packaging structure in the prior art. In this structure, it is formed at the end of a lead bracket 10 A monochromatic light emitting diode chip 11 is disposed in the crystal cup 101 , and the monochromatic light emitting diode chip 11 is physically and electrically connected to another lead support 13 by a wire 12 . The crystal cup 101 is filled with a light-wave-transmissible resin 14 to cover and protect the monochrome LED chip 11, and encapsulated with an encapsulant 15 to form a bulb-shaped monochrome LED. [0003] Because the monochromatic light-emitting diode light bulb of this prior art is with its chip as light source, is limited to the physical characteris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/00H01L33/50
CPCH01L2224/8592H01L2924/181H01L2224/48091H01L2224/48247H01L2224/49113H01L2924/00014H01L2924/00012
Inventor 李克新孙增保
Owner ILEDM PHOTOELECTRONICS