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Screening equipment for promoting output of color zone of white-light LED lamp bead and screening method thereof

A technology of LED lamp beads and screening equipment, which is applied in chemical instruments and methods, separating solids from solids with airflow, filtering and sieving, etc., can solve the problem of low output rate of LED lamp bead color area and affect product reliability and other issues to achieve stable efficiency, stable internal conditions, and improved performance

Inactive Publication Date: 2015-04-08
四川英创力电子科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the output rate of the existing LED lamp bead color area is low and the reliability of the product will be affected by the addition of anti-settling powder during operation, and a method for improving the output of the white LED lamp bead color area is designed. Screening equipment and screening method thereof, the equipment and method use airflow to screen the fluorescent glue, and then use the screened fluorescent glue to increase the output rate of the LED lamp bead color area

Method used

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  • Screening equipment for promoting output of color zone of white-light LED lamp bead and screening method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the screening equipment used to improve the output of the white LED lamp bead color area includes an internal hollow screening equipment 6, and the inside of the screening equipment 6 is provided with several layers of filter membranes, and there are gaps between each layer of filter membranes , the outer wall of the filter membrane is in contact with the inner wall of the screening device 6 to form a sealed structure, and the center of each layer of filter membrane is arranged on the same lead vertical line, each layer of filter membrane is provided with a filter through hole, and the filter set above The aperture of the filter through-hole in the membrane is greater than the aperture of the filter through-hole in the adjacent filter membrane below it; one end of the screening device 6 is connected with a steel cylinder 1 filled with nitrogen, and the other end is provided with a magnetic stirrer 15, a magnetic stirrer 15 It is arranged direc...

Embodiment 2

[0025] Such as figure 1 As shown, on the basis of Example 1, the gas outlet of the steel cylinder 1 is connected with a pipeline 4, the pipeline 4 communicates with the inside of the screening device 6, the pipeline 4 is provided with a barometer 3, and the barometer 3 is arranged on the steel cylinder 1 and Between the screening equipment 6; the pipeline 4 is provided with a valve one 2, the valve one 2 is arranged at the gas outlet position of the steel cylinder 1, and the valve one 2 is arranged between the steel cylinder 1 and the barometer 3; the pipeline 4 is provided with Valve two 5, valve two 5 are arranged between the barometer 3 and the screening equipment 6; An outlet pipe 14 is arranged between the screening equipment 6 and the magnetic stirrer 15, and one end of the outlet pipe 14 communicates with the inside of the screening equipment 6. The centerline of the trachea 14 coincides with the centerline of the screening device 6 , the outlet pipe 14 is provided with...

Embodiment 3

[0027] The screening method used to improve the output of the white LED lamp bead color area, open the screening equipment, install two filter membranes with pore diameters of 13 μm and 15 μm in the screening equipment to form three filter chambers, and filter membranes with a pore size of 15 μm Set it directly above the filter membrane 2 with a pore size of 13 μm, keep the same distance between the filter membranes, and close the valve 3 at the same time; prepare fluorescent glue by purchasing phosphor powder with a marked particle size of 15 μm, the particle size error of the phosphor powder It is ±1μm. Stir the fluorescent glue, a total of 100g, and put it into the first-stage filter chamber. After the magnets are installed in the first-stage filter chamber and the second-stage filter chamber, seal the screening equipment and fix it on the iron stand , so that the screening equipment is directly above the magnetic stirrer, and the screening equipment is connected to the ste...

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Abstract

The invention discloses a screening device and a screening method for improving the output of the color area of ​​white LED lamp beads. The screening device is provided with several layers of filter membranes inside, and the filter films are all provided with filter through holes, and the screening device is connected to a steel cylinder. and a magnetic stirrer, install two filter membranes with different pore sizes inside the screening device to form three filter chambers, and follow that the pore size of the upper filter membrane is larger than that of the lower filter membrane, and add the stirred fluorescent glue to the first In the first-stage filter chamber, connect the screening equipment to the steel cylinder; turn on the magnetic stirrer to stir, open valve 1, valve 2 and valve 3 in sequence, and when the fluorescent glue in the third filter chamber is stable and unchanged, close valve 3 in sequence 1, Valve 2, and Valve 1, take out the fluorescent glue in each filter chamber in turn, so that fluorescent glue with different particle sizes and uniform particle sizes is obtained. The equipment and method use airflow to screen the fluorescent glue, and using the screened fluorescent glue to make LED lamp beads can improve the output rate of the LED lamp bead color area.

Description

technical field [0001] The invention relates to a screening device and a screening method for improving the output of the color area of ​​white LED lamp beads, belonging to the field of LED packaging. Background technique [0002] White LED is known as the fourth-generation green lighting source because of its advantages of high efficiency, energy saving, long life, no pollution, and high reliability. With the steady improvement of LED luminous efficiency and the continuous decline of prices, LED semiconductor lighting will gradually replace traditional lighting sources such as incandescent lamps and ordinary fluorescent lamps. [0003] The key core of LED semiconductor lighting is the production of LED lamp beads. The most commonly used white light LED production method in the industry is to use LED blue light chips with phosphor powder. This method has advantages in production cost, heat dissipation and control circuit. Phosphor powder is one of the key materials of LED ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B7/06B07B11/00B07B11/02B07B1/46
Inventor 曹文磊王建全梁丽陈可
Owner 四川英创力电子科技股份有限公司
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