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COB LED light source with adjustable color temperature and manufacturing method thereof

A manufacturing method and technology of LED chips, applied in the field of light sources, can solve problems such as low optical power density, cumbersome packaging process, and complicated packaging process, and achieve the effects of adjusting color temperature, improving light extraction efficiency, and improving extraction efficiency

Pending Publication Date: 2021-10-01
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are mainly the following ways to realize the adjustable color temperature of white LEDs in a single or combined package: 1. Mixed packaging of multiple monochromatic chips, but the packaging process is very complicated
2. Add red chips to the packaging structure of white light LEDs, but the color rendering index of the light source is low
3. Mix low color temperature white LEDs and high color temperature white LEDs for packaging, but the packaging process is cumbersome
4. White light LED devices and chips are packaged in a CSP package, but the optical power density per unit area is small and the cost is high

Method used

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  • COB LED light source with adjustable color temperature and manufacturing method thereof
  • COB LED light source with adjustable color temperature and manufacturing method thereof
  • COB LED light source with adjustable color temperature and manufacturing method thereof

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0027] In the description of the present invention, several means one or more, and multiple means two or more. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical fe...

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Abstract

The invention discloses a COB LED light source with adjustable color temperature and a manufacturing method thereof. The COB LED light source with adjustable color temperature comprises: a COB substrate provided with a light-emitting surface, wherein the light-emitting surface is internally provided with a plurality of independent circuits, and the circuits are provided with bonding pads; a plurality of flip blue light LED chips fixed on the bonding pads through die bonding solder paste; an anti-vertical-flow fluorescent glue coated on the plurality of flip blue light LED chips; and a packaging fluorescent glue coated on the light-emitting surface and covering the anti-vertical-flow fluorescent glue. According to the COB LED light source with the adjustable color temperature provided by the embodiment of the invention, the COB LED light source with the adjustable color temperature can be simply realized and packaged, and the color rendering index of the COB LED light source can be improved.

Description

technical field [0001] The invention relates to the technical field of light sources, in particular to a COB LED light source with adjustable color temperature and a manufacturing method thereof. Background technique [0002] With the improvement of living standards, human beings have different requirements for light color parameters such as brightness, color temperature and color rendering index of light sources in different environments, while traditional incandescent lamps and gas discharge lamps can no longer meet human beings' requirements for light sources in all aspects. need. At the same time, as the current mainstream green lighting source, light-emitting diodes (LEDs) have the advantages of energy saving, environmental protection, and high luminous efficiency. Therefore, how to realize the adjustable color temperature of white LEDs has become an important research direction in the development of current light source technology. [0003] At present, there are main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/50
CPCH01L25/0753H01L33/508H01L2933/0041
Inventor 李炳乾张菜菜温作杰杨明德梁胜华
Owner WUYI UNIV
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