Preparation method of broadband gradient LED (Light-emitting Diode) fluorescent film

A gradient, broadband technology applied in the field of LED solid-state lighting systems
CN103243318AInactive Publication Date: 2013-08-14HUNAN SCI & TECH RES & DEV CENT
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUNAN SCI & TECH RES & DEV CENT
Publication Date
2013-08-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a preparation method of a broadband gradient LED (Light-emitting Diode) fluorescent film. The preparation method is characterized in that broadband gradient LED fluorescent powder serves as a raw material; a uniform multicolour (red, green, blue and the like) fluorescent material film is deposited on an LED device or an LED lampshade gasket by a suspension method or a sol-gel method; and the broadband gradient LED fluorescent film prepared by the method has uniform isotropic color temperatures. The preparation method can be used for manufacturing and massively producing high-performance white LEDs with same performance, and can be used for preparing white LED devices, which can emit light approximating to sunlight, with high photoelectric conversion rates and high color rendering indexes. The broadband gradient LED fluorescent powder has a special structure and composition, and is good in dispersity, high in stacking density, great in scattering intensity and high in light-emitting efficiency.
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Description

technical field

[0001] The invention relates to an LED solid-state lighting system and its application, in particular to the design and preparation method of a broadband gradient LED fluorescent film. Background technique

[0002] Since Nick Holonyak Jr. of General Electric Company developed the first practical visible light-emitting diode LED in 1962, especially the breakthrough of the third-generation semiconductor material GaN technology in the late 1990s triggered Since the third revolution in the field of lighting, after 50 years of development, LED has small size, high brightness, low power consumption (1 / 8 to 1 / 10 of incandescent bulbs, 1 / 2 of energy-saving fluorescent lamps), long life Long (more than 120,000 hours), high efficiency, low heat, environmental protection (no Hg, Pb and other pollution), low-voltage and low-current start-up, fast response, shock and impact resistance, planar packaging, easy to develop into ultra-thin and short products and other series ...

Claims

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