Light-emitting film used for LED lighting and provided with micro-mirror structure and preparing method thereof

A technology for LED lighting and light-emitting films, applied in semiconductor devices, electrical components, circuits, etc., can solve problems such as poor light-emitting performance, achieve stable light-emitting performance, good heat dissipation performance, and reduce production costs.

Active Publication Date: 2014-06-18
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN101533882A introduces a prefabricated film of white light LED phosphor powder and its preparation method, which is prepared by screen printing technology, and is made by printing a mixed liquid of organic silicon resin with phosphor powder and adjusted viscosity on the substrate. Phosphor powder prefabricated film, which solves the problem of poor luminous performance in the preparation of white LEDs by dispensing coating phosphor powders, and improves production efficiency and the life of white LED lighting devices

Method used

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  • Light-emitting film used for LED lighting and provided with micro-mirror structure and preparing method thereof
  • Light-emitting film used for LED lighting and provided with micro-mirror structure and preparing method thereof
  • Light-emitting film used for LED lighting and provided with micro-mirror structure and preparing method thereof

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Effect test

Embodiment 1

[0029] (1) Preparation of fluorescent slurry: choose aluminate yellow fluorescent powder with a particle size of 3-12um. Weigh raw materials according to mass ratio: phosphor 15%, binder (epoxy resin 60%, dimethyl silicone oil 20.0%), anti-settling agent (fumed silica) 2%, dispersant (dodecylsulfuric acid Sodium) 2.5%, defoamer (organosiloxane) 0.5%; add the liquid raw materials in the formula into the batching container, add phosphor powder under stirring, and stir evenly; add deionized water while stirring, adjust the slurry The viscosity coefficient is 400mPas, and the vacuum degassing treatment is carried out to obtain the fluorescent slurry; (2) the substrate PET, the substrate is ultrasonically cleaned, and dried in a vacuum drying oven at a drying temperature of 60°C and a drying time of 1- 2h; (3) Use the screen process to print fluorescent paste on the substrate PET, and dry it by infrared to prepare the phosphor coating; (4) Use PC resin film, the thickness of which ...

Embodiment 2

[0033](1) Prepare fluorescent slurry: choose aluminate yellow phosphor, add appropriate amount of nitride red phosphor, particle size is 3-12um, weigh raw materials according to mass ratio: yellow phosphor 12%, red phosphor 3%, Adhesive (polyurethane 60%, terpineol 10%, simethicone 10.0%), anti-settling agent (fumed silica) 2%, dispersant (sodium lauryl sulfate) 2.5%, disinfectant Foaming agent (organosiloxane) 0.5%; add the liquid raw materials in the formula into the batching container, add phosphor powder under stirring, and stir evenly; add deionized water while stirring, adjust the viscosity coefficient of the slurry to 500mPas, and Perform vacuum defoaming treatment to obtain fluorescent slurry; (2) The substrate is PET, and the substrate is ultrasonically cleaned and dried in a vacuum drying oven at a drying temperature of 60°C and a drying time of 1-2 hours; (3) Use the screen printing process to print the fluorescent paste on the PET substrate, dry it by infrared, pre...

Embodiment 3

[0035] (1) Preparation of fluorescent slurry: choose silicate yellow fluorescent powder with a particle size of 3-12um, and weigh the raw materials according to the mass ratio: 30% fluorescent powder, 15% adhesive (50% acrylate, ethyl silicone oil), Anti-sedimentation agent (fumed silica) 2%, dispersant (polyvinyl alcohol) 2.5%, defoamer (organosiloxane) 0.5%; add the liquid raw materials in the formula to the batching container, and add it under stirring Fluorescent powder, stir evenly; add deionized water during stirring, adjust the viscosity coefficient of the slurry to 300mPas, and perform vacuum degassing treatment to obtain fluorescent slurry; (2) The substrate is plexiglass (PMMA) film, and the base The materials were ultrasonically cleaned and dried in a vacuum drying oven at a drying temperature of 60°C and a drying time of 1-2 hours; (3) Printed fluorescent paste on the plexiglass film using a screen printing process, and dried it by infrared. Phosphor powder coating...

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Abstract

The invention discloses a light-emitting film used for LED lighting and provided with a micro-mirror structure and a preparing method of the light-emitting film and relates to the technical field of LED lighting and displaying. Binding agents, anti-setting agents, dispersing agents, antifoaming agents and fluorescent powder are processed in a vacuum defoamation mode to prepare fluorescent sizing agents; a screen mesh technology is adopted for printing the fluorescent sizing agents on a substrate, and a fluorescent powder coating is prepared; an impressing technology is adopted for preparing micro-mirror patterns on an optical polymer film material to prepare a micro-mirror structure film; finally, the micro-mirror structure film and the fluorescent powder coating are stuck together to prepare the light-emitting film used for LED lighting and provided with the micro-mirror structure. The prepared fluorescent powder coating is prepared, the technology is simple, and the thickness, the pattern shape and the fluorescent powder content of a film layer are easily controlled. According to the light-emitting film, the service life of a whole LED lamp is effectively prolonged, and the LED lamp has the more stable light-emitting performance.

Description

technical field [0001] The invention relates to the technical field of LED lighting and display, in particular to a luminescent film with a micromirror structure for LED lighting and a preparation method thereof. Background technique [0002] Semiconductor lighting has the characteristics of green environmental protection, long life, high efficiency and energy saving, resistance to harsh environments, simple structure, small size, light weight, fast response, low working voltage and good safety, so it is known as the successor to incandescent lamps, fluorescent lamps and energy-saving The fourth generation of lighting electric light source after the lamp, that is, the green light source. In the application of phosphor powder in white light LED, the simplest and most direct method is to mix phosphor powder with glue and apply it directly on the LED chip, and then cure it under UV lamp. The coating process of the phosphor layer and the characteristics of the phosphor coating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50H01L33/58
CPCH01L33/505H01L33/58H01L2933/0041H01L2933/0058
Inventor 关荣锋宋娟尤亚军侯贵华许宁
Owner YANCHENG INST OF TECH
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