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Remote phosphor structure applicable to LED lighting and production method thereof

A remote phosphor and LED lighting technology, applied in the field of phosphor, can solve the problems of high color rendering and low color temperature at the same time, and achieve the effects of ensuring luminous efficiency, reducing color temperature, and ensuring uniformity of brightness and chromaticity

Inactive Publication Date: 2012-10-10
NANJING HANDSON SCI & TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a remote phosphor structure suitable for LED lighting and its preparation method for the shortcomings of remote phosphors that cannot simultaneously meet the characteristics of high color rendering, low color temperature and high luminous efficiency

Method used

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  • Remote phosphor structure applicable to LED lighting and production method thereof
  • Remote phosphor structure applicable to LED lighting and production method thereof
  • Remote phosphor structure applicable to LED lighting and production method thereof

Examples

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Embodiment 1

[0044]Mix blue, green and red phosphors with silica gel respectively, add xylene as a diluent, and stir evenly to obtain blue, green and red phosphor slurries respectively. Prepare the blue fluorescent layer on the PC board by scraping and masking. After drying at 100 degrees for 2 hours, scrape a layer of green fluorescent layer, and then dry at 100 degrees for 2 hours. Then scrape-coat a layer of red fluorescent layer, and dry it at 100 degrees for 2 hours to obtain a phosphor with blue-green-red superimposed fluorescent layer.

Embodiment 2

[0046] Mix yellow and red phosphors with epoxy resin respectively, add acetone as diluent and polyamine as curing agent and stir evenly to obtain yellow and red phosphor slurries respectively. Heat the PMMA plate to 80 degrees, use the method of spraying and masking in the pre-designed R area (such as figure 2 ) to prepare a red fluorescent layer, after drying at 100°C for 1 hour, replace the mask, spray a yellow fluorescent layer on the remaining area, and dry at 100°C for 1 hour, and finally obtain a yellow-red phosphor array of phosphors.

[0047] In the field of LED lighting applications, the multi-wavelength layered superposition or multi-wavelength array phosphor structure of the present invention is used as the light conversion element of LED lighting to realize the multi-spectrum emission of LED lighting, and can control the thickness of the phosphor layer , the area and shape of the phosphor array, etc., while improving the color rendering and reducing the color tem...

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Abstract

The invention provides a remote phosphor structure applicable to LED lighting and a production method thereof. The remote phosphor structure applicable to LED lighting comprises a light-permeable support part and a phosphor layer arranged on the same. The phosphor layer at least comprises first-wavelength phosphor and second-wavelength phosphor. The first-wavelength phosphor forms a first phosphor layer. The second-wavelength phosphor forms a second phosphor layer. The first phosphor layer and the second phosphor layer are stacked on the light-permeable support part layer by layer. The production method includes producing at least two layers of phosphor different in wavelength on the light-permeable support part. By the design of the phosphor layers, multi-wavelength layering-stacked structure or multi-wavelength array structure, multispectral emergence is achieved, color rendering is improved, color temperature is lowered, and luminous efficiency of the phosphor is guaranteed.

Description

[0001] technical field [0002] The invention relates to a phosphor with high efficiency, in particular to a structure of a remote phosphor with excellent performance and a preparation method thereof. The remote phosphor can be used for a light source in which a conductor light-emitting diode (LED) is a luminous body, and belongs to the electric light source and field of lighting technology. Background technique [0003] White LEDs have attracted much attention due to their advantages of high luminous efficiency and long life. With the development of LED technology and the expansion of application fields, higher requirements are put forward for the color temperature, color rendering and luminous efficiency of LED lighting sources. [0004] At present, in order to achieve low color temperature and high color rendering of LEDs, red phosphor is usually added to yellow phosphor to increase its color rendering index and reduce color temperature, but this method will cause a decr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V9/10H01L33/50F21Y101/02F21V9/40F21Y115/10
Inventor 宋秀峰陆英艳周鸣刘乃涛侯君凯孙大兵
Owner NANJING HANDSON SCI & TECH CORP
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