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Method for manufacturing white light LED light sources

A technology of LED light source and manufacturing method, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., and can solve problems such as inconsistent matching between fluorescent sheets and LED chips, low product yield, and uneven light output from LED light sources.

Inactive Publication Date: 2013-11-27
APT ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for manufacturing a white LED light source, so as to solve the problem of uneven light output from the LED light source due to inconsistent matching between the fluorescent sheet and the LED chip, which leads to low product yield.

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  • Method for manufacturing white light LED light sources
  • Method for manufacturing white light LED light sources
  • Method for manufacturing white light LED light sources

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Embodiment 1

[0037] Such as image 3 As shown, this embodiment discloses a method for manufacturing a white LED light source, the white LED light source is made of LED chips and fluorescent sheets, including the following steps:

[0038] (1) Divide the LED chips into multiple levels according to their wavelengths; among them, the LED chips in this embodiment preferably have blue LED chips with a wavelength of 440-465 nanometers; Figure 4 As shown, the LED chips are divided into multiple levels according to their wavelengths, specifically: the 440-465 nm blue LED chips are divided into ten levels with 2.5 nm as the wavelength difference, the first level in the figure is 440 -442.5, that is, blue LED chips with a wavelength greater than or equal to 440 nanometers and less than or equal to 442.5 nanometers are class 1, blue LED chips with a wavelength greater than 442.5 nanometers and less than or equal to 445 nanometers are class 2, and so on. The blue-light LED chip is the 10th level; aft...

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Abstract

The invention discloses a method for manufacturing white light LED light sources. The white light LED light sources are made of LED chips and a fluorescent piece. The method for manufacturing the white light LED light sources comprises the following steps of dividing the LED chips into a plurality of grades according to the wave length of the LED chips, cutting the fluorescent piece into a plurality of fluorescent piece subunits, using the LED chips of all the grades as excitation light sources respectively, carrying out photochromic performance tests on the fluorescent piece subunits, selecting the fluorescent piece subunits matched with the LED chips of all the grades, and packaging mutually matched LED chips and the fluorescent piece subunits to form the white light LED light sources. The method for manufacturing the white light LED light sources can ensure the matching between the fluorescent piece subunits and the LED chips, and guarantees the uniformity of light emitted by the white light LED light sources, therefore, the qualified rate of products is improved, and production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of LEDs, and in particular relates to a manufacturing method of a white LED light source. Background technique [0002] LED has the characteristics of energy saving, environmental protection, fast response, and long life, and is widely used in many fields. In 2012, the penetration rate of LED as a backlight in the field of LCD panel display has exceeded 90%. According to the prediction of relevant research institutions, in the next 2- Within 3 years, the penetration rate of LED light sources in the lighting field will reach 60%. Among them, the white light LED light source is the most extensive category in various application fields. [0003] At present, the most common method of white LED light source is to use the combination of blue LED and yellow phosphor to realize it. Such as figure 1 As shown, a white LED light source is formed by mixing yellow fluorescent powder 103 into silica gel or epoxy colloi...

Claims

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Application Information

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IPC IPC(8): H01L33/00H01L33/50
Inventor 万垂铭陈海英肖国伟阮承海姜志荣许朝军
Owner APT ELECTRONICS
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