Full-spectrum LED light source

A LED light source, full-spectrum technology, applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve problems that are not suitable for human visual preferences, easy to distort colors, color cast, etc., to overcome low excitation efficiency and improve luminous uniformity , The effect of improving color rendering

Active Publication Date: 2016-08-17
FOSHAN EVERCORE OPTOELECTRONICS TECH
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  • Abstract
  • Description
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Problems solved by technology

[0004] However, in the use of LED lighting products, there is a practical problem that the color rendering index cannot achieve the effect of natural light
It should be noted that the light source with high color rendering performance is better for color, and the color we see is close to natural color, which is more in line with the visual preference of human eyes. On the contrary, the light source with low color rendering performance is poor in color performance. The colors we see are easily distorted or cast, which is not suitable for human visual preference

Method used

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preparation example Construction

[0038] The phosphor powder can be applied to encapsulation adhesives of various types of LED light sources, such as SMD LEDs, COB LEDs, and the like. Correspondingly, the present invention also provides a method for preparing a full-spectrum LED light source, the method comprising:

[0039] (1) Prepare the LED bracket, set the LED chip on the LED bracket, and connect the LED chip and the LED bracket through metal wires;

[0040] (2) Select and mix yellow powder, blue-green powder, green powder, yellow-green powder, red powder and silica gel according to the formula to obtain fluorescent glue;

[0041] (3) Apply fluorescent glue evenly on the LED chips of the LED bracket, and make the fluorescent glue cover the LED chips and metal wires;

[0042] (4) Baking the packaged LED bracket to obtain a finished product.

[0043]It should be noted that, in the preparation method, the selection principles of the phosphor powder and the LED chip are the same as those described above, and...

Embodiment 1

[0046] 19mm×19mm mirror aluminum substrate is used as the bracket, and the blue-ray chip 1 with a dominant wavelength of 455-457.5nmd is selected as the excitation light source. The traditional packaging method is used to fix the blue-ray chip 1 on the bracket with crystal-bonding glue and use the gold wire 2 key Then conduct the dam 3 on the light-emitting surface of the die-bonding area and heat and solidify. Use yellow powder, blue-green powder, green powder, yellow-green powder and red powder to prepare and mix with silica gel to make fluorescent glue 4, then dispensing and heat curing (see the specific packaging structure figure 2 ). Among them, the fluorescent powder is mixed from Intermex YAG05 yellow powder, Hongda 490 blue-green powder, Intermex G2762 green powder, Keheng YG535 yellow-green powder and Youyan 07655 red powder. The yellow powder, blue-green powder, green The weight ratio among powder, yellow-green powder and red powder is 1:0.5:0.36:1.14:0.4.

Embodiment 2

[0048] 19mm×19mm mirror aluminum substrate is used as the bracket, and the blue-ray chip 1 with a dominant wavelength of 455-457.5nmd is selected as the excitation light source. The traditional packaging method is used to fix the blue-ray chip 1 on the bracket with crystal-bonding glue and use the gold wire 2 key Then conduct the dam 3 on the light-emitting surface of the die-bonding area and heat and solidify. Use yellow powder, blue-green powder, green powder, yellow-green powder and red powder to prepare and mix with silica gel to make fluorescent glue 4, then dispensing and heat curing (see the specific packaging structure figure 2 ). Among them, the fluorescent powder is mixed from Intermex YAG05 yellow powder, Hongda 490 blue-green powder, Intermex G2762 green powder, Keheng YG535 yellow-green powder and Youyan 07655 red powder. The yellow powder, blue-green powder, green The weight ratio among powder, yellow-green powder and red powder is 1:0.18:0.27:0.18:0.32.

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Abstract

The invention discloses a full-spectrum LED light source. The full-spectrum LED light source comprises a substrate, an LED chip packaged on the substrate and fluorescent glue used for packaging the LED chip, wherein the fluorescent glue is formed by silica gel and fluorescent powder in a mixed manner; the fluorescent powder consists of yellow powder with the emission peak wavelength of 550-565nm, blue-green powder with the mission peak wavelength of 485-495nm, green powder with the mission peak wavelength of 515-525nm, yellow-green powder with the mission peak wavelength of 530-540nm and red powder with the mission peak wavelength of 650-660nm; and the weight ratio of the yellow powder to blue-green powder to green powder to yellow-green powder to red power is 1 to (0.1-0.5) to (0.2-0.4) to (0.15-1.2) to (0.08-0.5). By adoption of the full-spectrum LED light source, the LED light source spectrum can be closer to the solar spectrum, so that the full-spectrum LED light source is high in color rendering, and the color temperature of the full-spectrum LED light source is within the ideal solar light range.

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to a full-spectrum LED light source. Background technique [0002] As a new type of light source, LED has the characteristics of environmental protection and energy saving, high brightness, long life, fast start-up speed, and high chroma. It is widely used in outdoor advertising displays, indoor lighting, decorative lights, and emergency lights. [0003] Since the 1990s, many breakthroughs have been made in the research and development of LED chip and material production technology, making epitaxial wafer and chip technology increasingly mature; at the same time, with the improvement of LED chip efficiency and the development of LED packaging application technology, LED solid-state lighting The performance and efficiency of the technology continue to surpass the traditional lighting technology, and has been widely used. [0004] However, in the use of LED lighting products, there is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50
CPCH01L33/504H01L2224/48137
Inventor 王孟源朱思远曾伟强
Owner FOSHAN EVERCORE OPTOELECTRONICS TECH
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