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LED light source with adjustable color temperature color rendering index and packaging method thereof

A technology of LED light sources and LED chips, applied in electrical components, electrical solid devices, circuits, etc., can solve the problems of unchanged color rendering index, small color gamut, and poor light color uniformity, so as to improve visual performance, light Uniform color distribution, optimizing the effect of light source display

Pending Publication Date: 2021-11-16
GUANGZHOU LEDTEEN OPTOELECTRONICS CO LTD
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  • Application Information

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Problems solved by technology

Most of these adjustable color temperature products are based on the RGB three primary colors, which have the problems of small color gamut and low color rendering index, or increasing the number of color LED monochromatic lights can expand the color gamut and improve the color rendering index, but the efficiency is low, and Poor light color uniformity
[0004] In addition, there is also a method of using a group of high color temperature light sources and a group of low color temperature light sources. Users can choose the color temperature according to their needs. The proportions of different colors are different to achieve different color temperature effects, but the intermediate color will fall on the straight line formed by connecting the two sets of color temperature light sources. The coordinates on the straight line are not located on the Planckian locus or below the Planckian locus, and The color rendering index of this technical method of adjustable color temperature has not been changed, and it is still relatively simple

Method used

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  • LED light source with adjustable color temperature color rendering index and packaging method thereof
  • LED light source with adjustable color temperature color rendering index and packaging method thereof
  • LED light source with adjustable color temperature color rendering index and packaging method thereof

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Embodiment Construction

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be combined arbitrarily to form new embodiments. .

[0042] An LED light source with adjustable color temperature display index, such as figure 2 , Image 6 and Figure 7 As shown, it includes a substrate 1, a first blue LED chip 3, a first phosphor glue layer 9, a second blue LED chip 4, a second phosphor glue layer 10, a green LED chip 5, a red LED chip 6, a control The circuit, the transparent silica gel layer 11, the dam 7, the first blue LED chip 3, the second blue LED chip 4, the green LED chip 5 and the red LED chip 6 are fixed on the substrate 1, and the substrate 1 is also provided with a connecting The control loops of a blue LED chip 3 , a second blue LED chip 4 , a green LED chip 5 and a red LED chip 6 and the correspond...

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Abstract

The invention provides an LED light source with an adjustable color temperature color rendering index. The LED light source comprises a first blue light LED chip, a second blue light LED chip, a green light LED chip and a red light LED chip, wherein the first blue light LED chip is fixed on a substrate and used for exciting a first fluorescent powder glue layer and then exciting second fluorescent powder glue, the second blue light LED chip is used for exciting the second fluorescent powder glue, the green light LED chip is used for exciting the second fluorescent power glue, and the red light LED chip is used for exciting the second fluorescent powder glue. The invention relates to a manufacturing method of the LED light source with the adjustable color temperature color rendering index. The color temperature color rendering index meeting the user requirement can be obtained by adjusting the current proportion, so that the fluorescent powder excitation spectrum is effectively controlled, the maximum visual efficiency LER of the product is improved, and the light source color rendering index is optimized. The color temperature can be changed within a certain range by adjusting the current proportion through multi-path control, the color coordinates are kept within the standard deviation on the Planckian locus, and the color-temperature-adjustable high-color-rendering-index white-light LED with the color rendering index and the LER improved to a certain degree and the light color evenly distributed is achieved.

Description

technical field [0001] The invention relates to the technical field of LED light sources, in particular to an LED light source with adjustable color temperature display index and a packaging method thereof. Background technique [0002] LED light source has the advantages of green environmental protection, long life, energy saving, high reliability, good light efficiency, small size, etc., and is widely used. As people's requirements for healthy lighting are getting higher and higher, LED light sources with a single color temperature and a single CRI can no longer meet people's needs. [0003] In the prior art, there are also products with adjustable color temperature. Most of these adjustable color temperature products are carried out through RGB three primary colors, which have the problems of small color gamut and low color rendering index, or increase the number of color LED monochromatic lights, which can expand the color gamut and improve the color rendering index, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/50H01L33/54
Inventor 李明珠苏佳槟谢观逢滕翼龙龙承盛
Owner GUANGZHOU LEDTEEN OPTOELECTRONICS CO LTD
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