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Method for LED synthesizing white light

A white light and blue light technology, applied in the use of light sources, gas discharge lamps, lighting and heating equipment, etc., can solve problems such as unfavorable use, increased product cost, high total voltage, etc., achieve uniform white light spot, simplify control circuit, excitation low energy effect

Inactive Publication Date: 2007-10-24
HE SHAN LIDE ELECTRONICS ENTERPRISE CO LTD
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

For LED lights with this structure, due to the large difference in operating voltage between the blue and red diodes, if the two are connected in series, a higher total voltage is required, which is not conducive to use; A resistor is connected in series with a diode, which increases the complexity of the manufacturing process and increases the cost of the product

Method used

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  • Method for LED synthesizing white light
  • Method for LED synthesizing white light
  • Method for LED synthesizing white light

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Embodiment Construction

[0021] Referring to FIG. 1 and FIG. 2 , a method for synthesizing white light from an LED includes an encapsulation colloid 1, and two pins 2 and 3 connected to a power supply are drawn out of the encapsulation colloid 1. The blue light chip 4 and the green light chip 5 are electrically connected with the pins 2 and 3 . The blue light chip 4 and the green light chip 5 are covered with red phosphor 6 . The blue light chip 4 is the light emitting diode, and the diode chip with the emission wavelength in the range of 430-480nm is generally called the blue light chip 4 in the industry; similarly, the green light chip 5 is the light emitting diode that emits green light. Generally, a diode chip with an emission wavelength in the range of 510~555nm can be called green chip 5; red phosphor 6 refers to a phosphor that can excite red light after absorbing light with a wavelength shorter than that of red light. Generally, the phosphor with excitation light wavelength in the range of 600...

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Abstract

The disclosed method for synthesizing white light by LED comprises: selecting a blue / green-light wafer to generate 430-480 / 510-555nm blue / green light; exciting the red fluorescent powder to generate 600-630nm red light, then mixing together into the white light. This invention needs just simple control circuit and lower laser energy, and has wide application for warm white light.

Description

technical field [0001] The invention relates to a lighting fixture, in particular to a method for synthesizing white light with LEDs. Background technique [0002] LED comes from the abbreviation of LIGHT EMITTING DIODE in English, which means light-emitting diode. The structure of the simplest light-emitting diode includes a P-type semiconductor, an N-type semiconductor and a PN junction formed between them. When a current passes through the diode, charge carriers are generated at the PN junction, that is, electrons and electrons. Holes, electrons combine with holes and release energy in the form of photons. Adding specific semiconductor chemicals at the PN junction can make the diode emit light of a specific color. For example, adding indium gallium nitride (InGaN) can produce pure Blue light, adding gallium nitride (GaN) to generate green light, etc., package the light-emitting diode and lead out the positive and negative poles of the light-emitting diode from the packag...

Claims

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Application Information

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IPC IPC(8): H01L33/00F21K7/00F21K99/00
CPCY02B20/181
Inventor 樊邦弘
Owner HE SHAN LIDE ELECTRONICS ENTERPRISE CO LTD
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