Method for manufacturing bulb lamp with fluorescent thin films applied to LED lamp filament
A technology for LED filaments and bulb lamps, which is applied to semiconductor devices of light-emitting elements, light sources, lighting and heating equipment, etc., can solve the problems of high-power white LED packaging requirements, and achieve poor stability, simple manufacturing process, and solid crystal. The effect of simple process
Inactive Publication Date: 2017-06-27
SHANGHAI INST OF TECH
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[0005] The present invention is aimed at the problem that high-power white light LEDs have high requirements for packaging, and proposes a method of using fluorescent film for LED filaments to make bulb lamps, improving the stability of LED filaments and prolonging the service life of filaments
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[0029] A method for making a bulb lamp by using a fluorescent film for an LED filament, comprising: a packaging structure and a packaging method for using a fluorescent film for an LED filament, and a method for manufacturing an LED filament bulb based on the fluorescent film package.
[0030] Such as figure 1 The schematic diagram of the packaging structure is shown by taking a hard filament as an example. The filament of the present invention mainly relies on cutting or stamping on substrates of different materials to obtain a strip-shaped substrate 1, and etching conductive lines 4 on the strip-shaped substrate 1 , and leave a space of a certain size between the conductive lines 4 as the preset die-bonding position 3, and then solder the flip-chip LED chip 2 on the preset die-bonding position 3 through solder paste. Filament two ends have fixing deck 12.
[0031] Such as figure 2 The cross-sectional view of the filament is shown by taking the hard filament as an example....
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The invention relates to a method for manufacturing a bulb lamp with fluorescent thin films applied to an LED lamp filament. By the adoption of the technical scheme that the fluorescent thin films replace fluorescent powder, the method for manufacturing the bulb lamp with the fluorescent thin films applied to the LED lamp filament has the series of advantages that the excited emission efficiency is high, the physical and chemical properties are stable, the evenness is high, the heat conductivity is high, and the post-processing technology is simple, and the problems that fluorescent powder packaging is poor in stability, prone to aging and the like are solved. By the adoption of LED chips of an inverse structure, the die bond technology is simple, and heat dissipation performance is good. According to the method for manufacturing the bulb lamp with the fluorescent thin films applied to the LED lamp filament, multiple chips can be adopted to be combined with the fluorescent films of different proportions and matched with front-face and back-face die bond, the requirements for different luminous fluxes, different color temperatures, different color rendering indexes and different light colors can be met, and the light emitting requirements in actual life environments can be met; and a high-power white LED is simple in packaging structure, simple in manufacturing technology and suitable for large-scale industrial production.
Description
technical field [0001] The invention relates to an LED lamp lighting technology, in particular to a method for using a fluorescent film as an LED filament to make a bulb lamp. Background technique [0002] Light Emitting Diode (Light Emitting Diode) light source, as a new type of green lighting source, has been widely used around the world for its characteristics of no pollution, long life, low loss, pure light color, and shock resistance. LED filament lamps have attracted wide attention due to their 360° full luminescence, no flicker, and no blue light leakage, and they have won the love and pursuit of nostalgic people for their characteristics that resemble traditional incandescent lamps when they emit light. [0003] At present, the commercialization of white LED filament products is based on the combination of blue light chips and filling glue to produce white light. The filling glue is made by mixing silica gel and fluorescent powder. The manufacturing method of white...
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IPC IPC(8): F21K9/90H01L25/075H01L33/50H01L33/64F21Y115/10
CPCF21K9/90H01L25/0753H01L33/505H01L33/641
Inventor 邹军姜楠杨波波石明明朱伟王立平李梦恬刘祎明
Owner SHANGHAI INST OF TECH