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Formation method for long-distance excitation fluorescence conversion film for LED lamp

A technology of LED lighting and remote excitation, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of complex process, difficult operation, insufficient light extraction efficiency and chromaticity uniformity, and achieve simple process and operability Strong, improve the effect of under-capacity

Inactive Publication Date: 2016-02-10
SHENZHEN DESUN PHOTOELECTRICITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: In order to solve the problems of complex process, difficult operation, insufficient light extraction efficiency and chromaticity uniformity existing in the existing LED remote excitation fluorescent conversion technology, a process is disclosed. A method for forming a remote-excited fluorescent conversion film for LED lamps that is simple and can greatly increase the efficiency of LED light extraction and improve the chromaticity uniformity of white light space, to replace the existing LED remote-excited fluorescent conversion technology and improve the production efficiency of LED lamps and improve its quality and performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Get gamma phase aluminum oxide and deionized water and mix to obtain the aluminum oxide suspension that concentration is 10%, add the polyoxyethylene organic binder that concentration is 1%, the concentration that contains the ammonium salt (A40) of carboxylic acid polymer is 1 ‰ surfactant and fluorescent powder, after fully stirring to form a stable phosphor powder slurry, the prepared phosphor powder slurry is coated on the inner wall of the lampshade of the LED lamp by the pressure coating method, and the lampshade is applied after the phosphor powder slurry is dried. Put it into the plasma degumming equipment, and use the oxygen plasma bombardment degumming method to remove or destroy the organic binder in the phosphor colloid, thereby forming an organic-free fluorescent conversion film on the inner wall of the lampshade.

Embodiment 2

[0018] Get gamma phase aluminum oxide and deionized water and mix to obtain the aluminum oxide suspension that concentration is 15%, add the polyvinyl alcohol organic binder that concentration is 5%, the concentration of the ammonium salt (A40) that contains carboxylic acid polymer is 5% ‰ of surfactant and phosphor, after fully stirring to form a stable phosphor powder slurry, spray the prepared phosphor powder slurry on the inner wall of the lampshade of the LED lamp, and put the lampshade on the lampshade after the phosphor powder slurry is dry. Into the plasma degumming equipment, the method of bombarding the degumming with oxygen plasma is used to remove or destroy the organic binder in the phosphor colloid, thereby forming an organic-free fluorescent conversion film on the inner wall of the lampshade.

Embodiment 3

[0020] Get gamma phase aluminum oxide and deionized water to mix and obtain the aluminum oxide suspension that concentration is 17%, add the carboxymethyl cellulose ammonium organic binding agent that is 8%, the ammonium salt (A40) that contains carboxylic acid polymer Surfactant and fluorescent powder with a concentration of 7‰, after fully stirring, form a stable phosphor powder slurry, and apply the prepared phosphor powder slurry to the inner wall of the lampshade of the LED lamp by the suction coating method, and wait for the phosphor powder slurry to dry Finally, put the lampshade into the plasma degumming equipment, and use the oxygen plasma bombardment degumming method to remove or destroy the organic binder in the phosphor colloid, thereby forming an organic-free fluorescent conversion film on the inner wall of the lampshade.

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Abstract

The invention relates to a formation method for a long-distance excitation fluorescence conversion film for an LED lamp. The formation method comprises the following steps: separately making an aluminum oxide suspension, an organic binder and a surfactant including an ammonium salt having carboxylic acid polymer; mixing the prepared aluminum oxide suspension, the organic binder and the surfactant, and adding a fluorescent powder with the required type and quantity to the mixture; fully stirring the mixture to obtain a fluorescent powder syrup; covering the inner wall of a lamp cover of the lamp with the prepared fluorescent powder syrup; and enabling the fluorescence conversion film to be formed in the inner wall of the lamp cover when the fluorescent powder syrup is dried. Compared with the existing long-distance excitation fluorescence conversion technology for the LED, the formation method for the long-distance excitation fluorescence conversion film for the LED lamp is simpler in technology, and capable of greatly simplifying the packaging process of the LED device and improving the production efficiency; and meanwhile, the light extraction efficiency, the spatial chromatic uniformity, the stability and the reliability of the LED lamp product are dramatically improved.

Description

technical field [0001] The invention relates to a method for forming a remote-excited fluorescent conversion film of an LED lamp, aiming at improving the light extraction efficiency of the LED lamp and improving the uniformity of white light space chromaticity. Background technique [0002] At present, white LED-based semiconductor lighting technology has been vigorously promoted and developed around the world, and is forming a huge industry. At present, the most common way to realize LED white light is light color conversion, that is, to obtain white light through phosphor powder conversion. This technology is accepted by many manufacturers because of its simple method and strong operability, and thus has been widely used in production. [0003] At present, the main technical way to obtain white light is to mix a certain proportion of phosphor powder that is complementary to the light color of the chip in the LED plastic encapsulant, and package it with the LED chip after c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50
Inventor 夏鼎智
Owner SHENZHEN DESUN PHOTOELECTRICITY
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