LED light converting plate and manufacturing method thereof

A light-converting plate and light-converting technology, applied in chemical instruments and methods, light sources, luminescent materials, etc., can solve problems such as glare and human visual impact, and achieve the effect of extending service life, solving glare problems, and high consistency.

Inactive Publication Date: 2010-06-16
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, in addition to the above aging and consistency problems, the current LED lamps generally have the problem of glare, which seriously affects the vision of the human eye at night. This is because the LED light source used in the manufacture of lamps is a point light source. Therefore, in order to solve this problem, it is necessary to convert the point light source of the lamp into a surface light source.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: take by weighing 1kg YAG: Ce respectively 3+ Phosphor powder (1-30μm in particle size) and 5kg polycarbonate raw material (1-200μm in particle size), mix the two evenly and put them into the extruder, set the temperature of the extruder to 180°C to make the fluorescent powder Extrude the mixture with polycarbonate raw materials evenly, and then pass the extruded mixture through cooling roll treatment to make a flat light-transfer plate.

Embodiment 2

[0022] Embodiment 2: Take by weighing 1kg YAG: Ce respectively 3+ Phosphor powder (with a particle size of 50-100 μm) and 10kg of polycarbonate raw material (with a particle size of 300-1500 μm), mix the two evenly and add them to the extruder, set the temperature of the extruder to 150°C to make the phosphor Uniformly extrude the mixture with polycarbonate raw materials, and then inject the extruded mixture to make a spherical light conversion plate.

Embodiment 3

[0023] Embodiment 3: take by weighing 1kg YAG respectively: Ce 3+ Phosphor powder (particle size 80-100μm) and 20kg polycarbonate raw material (particle size 2000-5000μm), mix the two evenly and put them into the extruder, set the temperature of the extruder to 170°C to make the phosphor powder Extrude the mixture with polycarbonate raw materials evenly, and then mold the extruded mixture to make a spherical light conversion plate.

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PUM

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Abstract

The invention provides an LED light converting plate and a manufacturing method thereof. The LED light converting plate comprises fluorescent powder and a high molecular polymer, wherein the high molecular polymer is polycarbonate, acrylic and polypropylene or polyester resin. The manufacturing method comprises the following steps of: weighing a certain amount of materials of the fluorescent powder and the high molecular polymer in proportion, and uniformly mixing; then manufacturing the mixture into a plate in a certain shape by methods of mould pressing, cold calendaring or injection moulding, and the like, and then the plate can be used. An LED lamp manufactured by using the light converting plate can obviously prolong the service life and solve the problem of glare of the traditional LED light source.

Description

technical field [0001] The invention relates to an LED light conversion plate and a manufacturing method thereof, belonging to the field of semiconductor lighting. Background technique [0002] As a new type of solid light source, LED (Light Emitting Diode) has developed rapidly in recent years and has been widely used in large-screen display, traffic signal lights, landscape lighting, street lighting and other fields. Compared with incandescent lamps and energy-saving lamps, its main advantages are: small size, fast response, good shock resistance, long life, especially energy saving and environmental protection, known as the fourth generation of lighting sources. [0003] Due to technical reasons, the current mainstream LED manufacturing method is blue light chip + yellow phosphor powder, and the packaging process is similar: mix the phosphor powder with silica gel or epoxy resin evenly, apply it on the chip, and then cure it. The light decay or aging of LEDs manufactured...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V9/10C09K11/08F21Y101/02F21V9/40
Inventor 王海波张瑞西
Owner NANJING UNIV OF TECH
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