Two-primary-color low-blue-light white-light LED element and white-light LED component

A dual-color, white technology, applied in the field of white LED components, can solve problems such as reduction, retinal cell fatigue function, lack of emission spectrum, etc., to achieve the effect of reducing function decline, reducing retinal cell fatigue, and good color rendering

Pending Publication Date: 2020-01-14
SHENZHEN INFILITE OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the white light of this white LED element contains a large amount of blue light and lacks an emission spectrum with a wavelength above 600nm, so it is easy to cause fatigue and a decrease in the function of retinal cells

Method used

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  • Two-primary-color low-blue-light white-light LED element and white-light LED component
  • Two-primary-color low-blue-light white-light LED element and white-light LED component
  • Two-primary-color low-blue-light white-light LED element and white-light LED component

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Experimental program
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Effect test

Embodiment 1

[0022] Such as figure 1 with figure 2 As shown, the first embodiment of the present invention provides a white LED element 1 with dual primary colors and low blue light. It includes a base 11 with a concave cross-section. The bottom surface of the base 11 is fixedly provided with a green-emitting LED 12 and a red-emitting LED. LED13, above the green-emitting LED12 and the red-emitting LED13 is provided an encapsulation coating 14 in the base 11, the encapsulation coating 14 is made of a mixture of cold white phosphor, transparent resin and light diffusing agent;

[0023] The weight percentages of cold white phosphor, transparent resin and light diffusing agent in the encapsulation coating 14 are: cold white phosphor 5-20%, transparent resin 75-90%, light diffusing agent 1-10%;

[0024] The green-emitting LED 12 and the red-emitting LED 13 are respectively connected to different power sources, and the ratio of the current supplied to the green-emitting LED 12 and the current of the ...

Embodiment 2

[0037] Such as Figure 4 As shown, the second embodiment of the present invention also provides a white LED assembly 2 including a plurality of white LED elements 1 as described above and a circuit substrate 21, and the white LED elements 1 are fixed on the circuit substrate 21 at intervals.

[0038] The white LED elements 1 are connected in series, in parallel, or in series and parallel.

[0039] The white LED assembly 2 provided in the second embodiment of the present invention can be used as a lighting fixture by arranging and installing a plurality of white LED elements 1 on the circuit substrate 21. The number and arrangement of the white LED elements 1 can be appropriately designed according to the illuminance and shape (lamp type, fluorescent lamp type) and the like of the required light source.

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Abstract

A two-primary-color low-blue-light white-light LED element includes a substrate, and a group consisting of a green-light LED, a red-light LED, and a packaging coating containing a cool white-light phosphor which are disposed in the substrate. The green-light LED and the red-light LED are connected to different power sources. The ratio of the current supplied to the green-light LED and the currentsupplied to the red-light LED is 1: 0.2-0.7, so that when a low current is supplied to the red-light LED, it is not affected that a high current is supplied to the green-light LED by the other power source, thereby not decreasing the brightness of the green-light LED. The two-primary-color low-blue-light white-light LED element can reduce blue light when lighting, can produce natural white light with sufficient brightness and both color rendering and color temperature close to sunlight, reduces retinal cell fatigue and functional decline of a user. A white-light LED component includes a plurality of the white-light LED elements and a circuit substrate. The white-light LED elements are successively fixed on the circuit substrate at intervals to be used as lighting fixtures. The number and the configuration of the white-light LED elements can be appropriately designed according to the illuminance and the shape of a required light source.

Description

Technical field [0001] The invention relates to a white LED element with dual primary colors and low blue light and a white LED assembly. Background technique [0002] In the prior art, a blue-emitting LED and a yellow phosphor are combined to obtain a white-emitting LED element. Usually, yellow phosphor and silica gel are mixed to form an encapsulation coating and coated or potted on the blue-emitting On the surface of the LED, part of the blue light emitted by the blue-emitting LED directly passes through the packaging coating, and the remaining blue light generates yellow light by exciting the yellow phosphor. The two parts of light are mixed and appear white light under human vision. Since this white light LED element is white light obtained by using a blue-emitting LED, a plurality of blue-emitting LEDs can be close to each other to solve the problem of color unevenness when white light is obtained. However, the white light of such a white light LED element contains a large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/48H01L33/50H01L33/52H01L33/56F21K9/20F21Y115/10
CPCF21K9/20F21Y2115/10H01L25/0753H01L33/48H01L33/50H01L33/52H01L33/56
Inventor 朱宏夏林嘉刘星
Owner SHENZHEN INFILITE OPTOELECTRONICS CO LTD
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