Fluorescent powder mixture and LED (Light-Emitting Diode) packaging device with color conversion function

A technology of LED packaging and color conversion, applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of large loss of light energy, reduce light efficiency, affect heat dissipation of devices, etc., to prevent precipitation, reduce consumption and waste.

Active Publication Date: 2012-12-12
GUANGDONG SHENLAITE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The lampshade is set on the surface of the packaged device, which will affect the heat dissipation on the surface of the device, and will significantly reduce the light efficiency, resulting in a large loss of light energy

Method used

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  • Fluorescent powder mixture and LED (Light-Emitting Diode) packaging device with color conversion function
  • Fluorescent powder mixture and LED (Light-Emitting Diode) packaging device with color conversion function
  • Fluorescent powder mixture and LED (Light-Emitting Diode) packaging device with color conversion function

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Embodiment Construction

[0029] The present invention proposes an LED packaging device with color conversion, including an LED chip and a gel-like phosphor mixture for packaging the LED chip. The phosphor mixture includes a reversible thermochromic material:

[0030] The discoloration temperature range of the reversible thermochromic material may be 7-70 degrees.

[0031] The reversible thermochromic material may be an interval chromogenic material.

[0032] The color band after discoloration of the reversible thermochromic material may be one of the following bands: 491-574nm, 575-584nm, 647-700nm.

[0033] A UV absorber may be included in the mixture.

[0034] The solutions of the present invention are described below through examples, but the protection scope of the present invention is not limited to the following examples.

[0035] The excited fluorescent powder mixture for LED includes fluorescent powder and carrier gel, and the mixture also includes reversible thermochromic material. Phospho...

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Abstract

The invention provides a fluorescent powder mixture and an LED (Light-Emitting Diode) packaging device with color conversion function and relates to an LED light source, for changing a color temperature, a tone or a color of light emitted by an LED device after being effected by the fluorescent powder mixture. According to the technical scheme, the LED packaging device comprises an LED chip and a colloidal fluorescent powder mixture for packaging the LED chip, wherein the fluorescent powder mixture comprises a reversible thermochromic material. The reversible thermochromic material provided by the invention is diffused in fluorescent powder, so as to prevent the fluorescent powder from depositing in a process of curing the fluorescent powder colloid and take the functions of a dispersing agent and an anti-precipitating agent. An LED lamp has no need of a lamp cover structure, so that the structure of a lamp can be simplified, and the cost is reduced. Furthermore, the front surface of the lamp is beneficial to ventilation and heat radiation of the front surface of the lamp. The fluorescent powder mixture and the LED packaging device have a wide application range in an indoor table lamp, a ceiling lamp, a tube lamp, a wall lamp, an LED lamp tube, a bulb lamp, a panel lamp and even backlight lamp and the like.

Description

technical field [0001] The invention relates to a fluorescent powder for packaging an LED light-emitting device and an LED packaging device, and relates to an LED light source. Background technique [0002] The most common white light LED light source is a blue LED packaged in a colloid containing yellow phosphor. The light emitted by the blue LED chip excites the yellow phosphor to emit yellow light, and the remaining blue light and yellow light mix to emit white light. In order to make the light soft, a lampshade is generally added outside the LED light-emitting device, and the lampshade is used to disperse the light and change the color temperature (such as cold light, warm light, etc.) or color. The lampshade is arranged on the surface of the packaged device, which will affect the heat dissipation on the surface of the device, and will significantly reduce the light efficiency, resulting in a large loss of light energy. Contents of the invention [0003] The first tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50H01L33/56
Inventor 冯海涛蔡德晟
Owner GUANGDONG SHENLAITE SCI & TECH
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