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Fluorescent film with novel lattice structure for decorative lighting

A lattice structure, decorative lighting technology, applied in electrical components, electric solid-state devices, circuits, etc., can solve the problems of reducing luminous efficiency, increasing internal secondary absorption, etc., to improve luminous efficiency, reduce mutual contact, and improve optical performance. Effect

Inactive Publication Date: 2020-03-31
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent application number CN109755233A discloses a method for preparing multi-color LEDs by LED dispensing and encapsulation process. The method is to mix fluorescent powder with glue, and package and prepare LEDs after dispensing and baking; Polychromatic light will increase internal secondary absorption and reduce luminous efficiency due to the mutual contact of phosphor powder

Method used

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  • Fluorescent film with novel lattice structure for decorative lighting
  • Fluorescent film with novel lattice structure for decorative lighting
  • Fluorescent film with novel lattice structure for decorative lighting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: preparation figure 2 Medium 7-9 colorful fluorescent film

[0028] 1) Preparatory steps: prepare the ultraviolet light chip, fluorescent powder for LED and other packaging materials; in this implementation example, the excitation wavelength of the ultraviolet light chip is 360nm, 1W; the red phosphor of LED is N630 phosphor, from the ultraviolet band 300nm to blue The wavelength band around 500nm has a relatively stable excitation efficiency, and the peak wave of the emission spectrum is 625nm; the green phosphor is S525 phosphor, and it has a relatively stable excitation efficiency from about 300nm to 480nm, and the peak wave of the emission spectrum is 525nm; blue The phosphor is BAM phosphor, which has a relatively stable excitation efficiency from 350nm to 400nm, and the peak wave of the emission spectrum is 450nm; other packaging materials include LED brackets, insulating glue, silica gel, defoamers, diffusing agents, etc.

[0029] 2) Prepare an arr...

Embodiment 2

[0034] Implementation example 2: preparation figure 2 Medium 10-12 colorful fluorescent film

[0035] The steps are the same as in Example 1, only the position of screen printing is different, which can be determined according to figure 2 The shapes of 10-13 are screen-printed. In order to distinguish the colorful fluorescent films, No. 10 is named 10-RGB130, No. 11 is named 11-RGB121, and No. 10 is named 10-RGB131.

Embodiment 3

[0036] Implementation Example 3: Preparation image 3 Medium 13-15 colorful fluorescent film

[0037] The steps are the same as in Example 1, only the position of screen printing is different, which can be determined according to figure 2 The shape of 10-13 is screen-printed. In order to distinguish the colorful fluorescent film, name 13 as 13-RGB112, name 14 as 14-RGB103, and name 15 as 15-RGB013.

[0038] The optical performance test results of the above three implementation examples are as follows: Figure 4 Shown:

[0039] from Figure 4 It can be seen from the figure that for a specific red, green and blue (RGB) phosphor, adjusting the space ratio of the red, green and blue (RGB) phosphor used in screen printing can adjust the peak value of the corresponding phosphor in its final emission spectrum Intensity, thereby changing the color of the emitted light.

[0040] 1) Different degrees of secondary absorption behavior will occur inside the fluorescent film with diff...

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Abstract

The invention discloses a fluorescent film with a novel lattice structure for decorative lighting. The film comprises a patterned planar red-green-blue fluorescent powder pixel array, red-green-blue ffluorescent powder pixel array comprises an LED red color block, an LED green color block and an LED blue color block, the LED red color block, the LED green color block and the LED blue color blockare of square structures which are the same in size and independent of one another, and color blocks in the red, green and blue fluorescent powder pixel array represent pixel points. The invention belongs to the technical field of decorative lighting. Based on an additive method principle of a light mixing principle, the invention provides the fluorescent film with the novel lattice structure fordecorative lighting. By determining the proportion of the red-green-blue (RGB) fluorescent powder and the layout of the pixel array, light of multiple colors is obtained, compared with direct mixing,mutual contact between emergent light of the RGB fluorescent powder and other fluorescent powder particles is reduced, internal secondary absorption is reduced, the luminous efficiency of the colorfulLED is further improved, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of decorative lighting, and specifically refers to a fluorescent film with a novel lattice structure for decorative lighting. Background technique [0002] With the improvement of people's quality of life, pure white LEDs can no longer meet people's needs for decorative lighting. In order to obtain LED lights of various colors, a variety of methods for obtaining multi-color light have been proposed. Among them, red, green and blue (RGB ) chip combination is the most common method for manufacturing multi-color devices (such as landscape lights, LCD screens, etc.), but products using this method need to design circuits, control current to adjust light color, complex operation and high cost. In order to solve the above problems, in the prior art, colorful LED fluorescent films are prepared by a glue dispensing method. [0003] The patent application number CN109755233A discloses a method for preparing multi-co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/50
CPCH01L25/0753H01L33/504
Inventor 傅仁利时亚辉朱海涛何钦江刘后宝
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS