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Gap filling method of light-emitting diode (LED) lamp bead

A technology of LED lamp beads and sapphire, applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of limited luminous effect of phosphor powder, limited excitation effect of blue LED chips, etc., and achieve the effect of increasing the number of voids

Active Publication Date: 2013-01-02
江苏裕铭铜业有限公司
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  • Claims
  • Application Information

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Problems solved by technology

The current mainstream white LED manufacturing method is to use blue LEDs to coat yellow or red and green phosphors. However, the excitation effect of blue LED chips is limited, and the luminous effect of phosphors is limited. How to further improve the luminous efficiency of LED lamp beads on this basis is industry problems

Method used

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  • Gap filling method of light-emitting diode (LED) lamp bead
  • Gap filling method of light-emitting diode (LED) lamp bead

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0028] A gap filling method for LED lamp beads disclosed by the present invention, the first step is to polish the selected sapphire substrate, place the selected sapphire substrate on the supporting plate 1 of the polishing equipment, and adjust the polishing disc 2 to the supporting plate. Plate 1, and set the height that the polishing disc 2 rotates once a week; then adjust the rotating speed of the polishing disc 2; finally adjust the pressure that the polishing disc 2 applies to the sapphire substrate and start to polish the sapphire substrate, and the polishing disc 2 rotates for the first time The height dropped during one week of grinding was 30nm, and the height dropped by the polishing disc 2 increased by 80nm from the second week.

[0029] The second step is to screen the sapphire powder obtained by polishing. The screening equipment used ...

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Abstract

The invention discloses a gap filling method of a light-emitting diode (LED) lamp bead and relates to a gap filling process of a light-emitting diode (LED) lamp bead. The method includes steps of step one, selecting a sapphire substrate, and placing the sapphire substrate in a polishing device for polishing to obtain sapphire particles; step two, placing the sapphire particles obtained from the polishing of the step one in a screening device for screening to obtain sapphire powders; and step three, adding the sapphire powders obtained from the screening of the step two to fluorescence glue to fill gaps of the LED lamp bead to be formed. The gap filling method of the LED lamp bead has the advantages that a production process of adding the sapphire powders to the fluorescence glue is provided, and the added sapphire substrate particles are distributed in the fluorescence glue so that the number of the gaps among fluorescence powders is increased; by means of transparent characteristics of sapphire, synthetic white light in the lamp bead can transmit the sapphire; by means of electrical insulating properties, normal work of blue light chips is not influenced; and by means of high-temperature resistant performances, the sapphire can not influenced by radiation of the blue light chips and can not produce negative effects due to radiation of the blue light chips.

Description

【Technical field】 [0001] The invention relates to a manufacturing process of a semiconductor device, in particular to a gap-filling process of an LED lamp bead. 【Background technique】 [0002] As countries around the world pay more attention to energy conservation and environmental protection, the application volume and usage rate of LED applications, especially white LED lighting, are increasing. The core of white LED lighting application is the lamp bead. The luminous efficiency of the lamp bead determines its application field. From the perspective of energy saving, luminous efficiency is the most important parameter to measure the quality of LED lamp beads. The current mainstream white LED manufacturing method is to use blue LEDs to coat yellow or red and green phosphors. However, the excitation effect of blue LED chips is limited, and the luminous effect of phosphors is limited. How to further improve the luminous efficiency of LED lamp beads on this basis is industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/00H01L33/50
Inventor 叶建
Owner 江苏裕铭铜业有限公司
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