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Preparation method of high-fidelity blue light-free solar spectrum LED and LED

A solar spectrum, no blue light technology, applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve the problems of reducing lighting comfort, large LED thickness, low lighting comfort, etc., to improve the setting and drying effect, and improve luminous Uniformity, the effect of improving lighting comfort

Active Publication Date: 2020-12-08
宁波纬智光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] White LEDs are widely used in technical fields such as lighting, displays, and car lights as a new generation of light sources due to their advantages of energy saving, environmental protection, and long life. At present, commercial white LEDs mainly use blue chips covered with yellow phosphors, but this There is more blue light in the spectrum emitted by this kind of LED, because the high energy of blue light will cause certain damage to human eyes, form human eye fatigue, and reduce the comfort of lighting; and this blue light excites the yellow light emitted by phosphor The spectrum is not a continuous spectrum, and the spectrum of 480nm-510nm and 660nm-700nm is missing, resulting in low color rendering of the LED as a whole; and in order to improve the luminous intensity of the LED light source, it is necessary to add an optical panel to the overall LED, so that Overall LED thicker
Therefore, the existing LED preparation methods and LEDs have the problems of low lighting comfort, low color rendering and large thickness.

Method used

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  • Preparation method of high-fidelity blue light-free solar spectrum LED and LED

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1. The preparation method of the high-fidelity blue-light-free solar spectrum LED is characterized in that it comprises the following steps:

[0021] a. Phosphor powder glue is prepared, according to the weight ratio: 1.88 parts of blue-green phosphor, 42.6 parts of yellow-green phosphor, 0 part of yellow phosphor, 9.062 parts of orange-red phosphor and 0 part of red phosphor to obtain a mixed phosphor; Then mix according to the weight ratio of 10.5 parts of glue A, 105 parts of glue B and 1.2 parts of anti-sedimentation powder to obtain the mixed glue; finally perform supercritical mixing according to the weight ratio of 1 part of mixed phosphor powder and 1 part of mixed glue, get product A;

[0022] b. Solid crystal, using solid crystal glue to fix the multi-chip on the installation base to obtain product B;

[0023] c. Apply fluorescent glue, use a high-speed rotating machine to drive product B to rotate at a high speed, and at the same time dispense produ...

Embodiment 2

[0028] Example 2. A method for preparing a high-fidelity blue-light-free solar spectrum LED, comprising the following steps:

[0029] a. Phosphor powder glue is prepared, according to the weight ratio: 5.04 parts of blue-green phosphor powder, 10.25 parts of yellow-green phosphor powder, 5.58 parts of yellow phosphor powder, 2.07 parts of orange-red phosphor powder and 0.204 part of red phosphor powder to obtain a mixed phosphor powder; Then mix 8.5 parts of glue A, 85 parts of glue B and 1 part of anti-sedimentation powder according to the weight ratio to obtain the mixed glue; finally perform supercritical mixing according to the weight ratio of 1 part of mixed phosphor powder and 1 part of mixed glue, get product A;

[0030] b. Solid crystal, using solid crystal glue to fix the multi-chip on the installation base to obtain product B;

[0031] c. Apply fluorescent glue, use a high-speed rotating machine to drive product B to rotate at a high speed, and at the same time dis...

Embodiment 3

[0036] Example 3. A method for preparing a high-fidelity blue-light-free solar spectrum LED, comprising the following steps:

[0037] a. Prepare fluorescent powder glue, according to the weight ratio: 1.5 to 6.5 parts of blue-green phosphor, 10 to 43 parts of yellow-green phosphor, 0 to 6.5 parts of yellow phosphor, and 1.5 to 10 parts of orange-red phosphor and 0-0.35 parts of red phosphor powder to obtain mixed phosphor powder; then mix 8-11 parts of glue A, 80-110 parts of glue B and 1-1.5 parts of anti-sedimentation powder according to the weight ratio, Obtain the mixed glue; finally carry out supercritical mixing according to the weight ratio of 1 part of mixed phosphor powder and 1 part of mixed glue to obtain product A;

[0038] b. Solid crystal, using solid crystal glue to fix the multi-chip on the installation base to obtain product B;

[0039] c. Apply fluorescent glue, use a high-speed rotating machine to drive product B to rotate at a high speed, and at the same ...

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Abstract

The invention discloses a manufacturing method of a high-fidelity blue-light-free solar spectrum LED. The method comprises the following steps of preparing a fluorescent powder glue, carrying out diebonding, and coating a fluorescent glue; and finally packaging and baking a color filter layer to obtain an LED finished product. The LED produced according to the method comprises an installation substrate (1). A plurality of uniformly distributed installation grooves (2) are arranged in an upper surface of the installation substrate (1), and a plurality of wafers (3) are fixedly installed in each installation groove (2). A light filtering layer (4) is arranged on the upper surface of the installation substrate (1), and a fluorescent powder glue layer (5) is coated between the light filteringlayer (4) and the installation substrate (1). In the invention, light-emitting uniformity can be improved, and the method has advantages of a high color rendering property, a high illumination comfortable feeling, a small thickness, a good heat dissipation effect and low processing cost.

Description

technical field [0001] The invention relates to a preparation method of a solar spectrum LED and the LED, in particular to a preparation method of the high-fidelity blue-light-free solar spectrum LED and the LED. Background technique [0002] White LEDs are widely used in technical fields such as lighting, displays, and car lights as a new generation of light sources due to their advantages of energy saving, environmental protection, and long life. At present, commercial white LEDs mainly use blue chips covered with yellow phosphors, but this There is more blue light in the spectrum emitted by this kind of LED, because the high energy of blue light will cause certain damage to human eyes, form human eye fatigue, and reduce the comfort of lighting; and this blue light excites the yellow light emitted by phosphor The spectrum is not a continuous spectrum, and the spectrum of 480nm-510nm and 660nm-700nm is missing, resulting in low color rendering of the LED as a whole; and in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/48H01L33/50H01L33/56
CPCH01L33/48H01L33/504H01L33/56
Inventor 罗副文陈一帆李高武周万嵩
Owner 宁波纬智光电科技有限公司
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