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Crystal light-emitting SMD LED lamp bead and preparation method thereof

A technology of LED lamp beads and crystal light emitting, which is applied in the direction of semiconductor devices, electric solid devices, electrical components, etc., and can solve the problem of color consistency of LED patch lamp beads and unsatisfactory spot effects, uneven mixing of phosphor powder and silica gel, and fluorescent Inconsistency in powder precipitation and other problems, to achieve the effect of protecting the gold wire structure inside the LED, reducing the process of light and color separation, and good color consistency in batches

Pending Publication Date: 2018-09-07
RENMIN UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] LED patch lamp bead is the most common type of LED lamp bead on the market at present. It is widely used because of its convenient assembly and patch SMT process. Mix and stir evenly, point into the stand bowl and bake, but in the process, it is easy to have uneven mixing of phosphor powder and silica gel, inconsistent phosphor precipitation, resulting in the same color of the finished LED patch lamp beads Sex and spot effect are very unsatisfactory
Silica gel mixed with fluorescent powder cannot withstand high temperature for a long time, resulting in a large attenuation of the pearlescent effect of the lamp; after the silica gel mixed with phosphor is baked and cured, the material is soft, and external force can easily cause the silica gel to deform, thereby breaking the gold wire, resulting in dead lights or defective lamps.

Method used

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  • Crystal light-emitting SMD LED lamp bead and preparation method thereof
  • Crystal light-emitting SMD LED lamp bead and preparation method thereof
  • Crystal light-emitting SMD LED lamp bead and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] In this example, if figure 1 , figure 2 As shown, the present invention provides a crystal light-emitting patch LED lamp bead, which includes an LED chip 1, a gold wire 2, a crystal sheet 3 and a bracket, and the gold wire 2 is a conductive wire. The bracket adopts a cup-shaped structure, and the LED chips 1 are arranged at intervals inside the cup-shaped structure of the bracket through the crystal-bonding glue 4. Each LED chip 1 is connected in series through the gold wire 2, and one end of the outermost LED chip 1 is connected to the bracket through the gold wire 2. The other end of the LED chip 1 is connected to the adjacent LED chip 1 via a gold wire. A crystal sheet 3 is arranged on the top of the cup-shaped structure of the bracket, and the LED chip 1 is enclosed in the bracket by the crystal sheet 3 to form an LED lamp bead.

[0022] In the above embodiment, the support includes a conductive positive electrode 5 , a conductive negative electrode 6 , an insula...

Embodiment 2

[0026] Such as image 3 , Figure 4 As shown, the structure of the crystal light-emitting patch LED lamp bead provided in this embodiment is basically the same as that in Embodiment 1. The difference is that in this embodiment, the inner wall of the top of the reflector cup 8 of the bracket is provided with a groove. The crystal piece 3 is embedded in the groove, so that the upper surface of the crystal piece 3 and the upper surface of the bracket are located at the same horizontal line.

[0027] In the above-mentioned embodiments, the crystal plate 3 adopts the structure of the crystal plate in the authorized announcement number CN106270523B.

[0028] The present invention also provides a method for preparing a crystal light-emitting patch LED lamp bead, which includes the following steps:

[0029] 1) Fix the LED chip 1 on the bottom of the reflective cup 8 with crystal bonding glue 4 in the reflective cup 8 of the bracket through a crystal bonder; wherein, the size of the ...

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Abstract

The invention relates to a crystal light-emitting SMD LED lamp bead and a preparation method thereof. The crystal light-emitting SMD LED lamp bead comprises LED chips, gold wires, a crystal sheet anda holder. The holder is a cup-shaped structure. The LED chips are set in the cup-shaped structure of the holder at intervals through die attach adhesive. Each LED chip is sequentially connected in series through the gold wires. One end of the outermost LED chip is connected with the holder through the gold wire. The other end of the LED chip is connected with the adjacent LED chip through the goldwire. The crystal sheet is set on the top of the cup-shaped structure of the holder. The LED chips are sealed in the holder through the crystal sheet. The crystal light-emitting SMD LED lamp bead emits light uniformly. The crystal is high temperature resistant. The lamp bead is not attenuated when the lamp bead works for a long time. A material is hard. The reliability is high. According to the SMD LED lamp bead prepared by the invention, light spots area uniform, and an LED internal gold wire structure can be effectively protected.

Description

technical field [0001] The invention relates to the technical field of a patch LED lamp bead, in particular to a crystal light-emitting patch LED lamp bead and a preparation method thereof. Background technique [0002] LED patch lamp bead is the most common type of LED lamp bead on the market at present. It is widely used because of its convenient assembly and patch SMT process. Mix and stir evenly, point into the stand bowl and bake, but in the process, it is easy to have uneven mixing of phosphor powder and silica gel, inconsistent phosphor precipitation, resulting in the same color of the finished LED patch lamp beads Sexuality and spot effect are very unsatisfactory. Silica gel mixed with fluorescent powder cannot withstand high temperature for a long time, resulting in a large attenuation of the pearlescent effect of the lamp; after the silica gel mixed with phosphor is baked and cured, the material is soft, and external force can easily cause the silica gel to deform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/00H01L33/48H01L33/50H01L33/60H01L33/62
CPCH01L25/0753H01L33/005H01L33/48H01L33/501H01L33/60H01L33/62H01L2224/73265H01L2224/48137
Inventor 曹永革申小飞文子诚
Owner RENMIN UNIVERSITY OF CHINA
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