CN115440717A - RGB lamp bead with four sides provided with welding feet and manufacturing method thereof - Google Patents

RGB lamp bead with four sides provided with welding feet and manufacturing method thereof Download PDF

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Publication number
CN115440717A
CN115440717A CN202110263285.8A CN202110263285A CN115440717A CN 115440717 A CN115440717 A CN 115440717A CN 202110263285 A CN202110263285 A CN 202110263285A CN 115440717 A CN115440717 A CN 115440717A
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China
Prior art keywords
support
led
metal
welding feet
sides
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Pending
Application number
CN202110263285.8A
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Chinese (zh)
Inventor
王睿锐
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Individual
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Individual
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Priority to CN202110263285.8A priority Critical patent/CN115440717A/en
Publication of CN115440717A publication Critical patent/CN115440717A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/52—Encapsulations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008—Processes
    • H01L2933/0033—Processes relating to semiconductor body packages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008—Processes
    • H01L2933/0033—Processes relating to semiconductor body packages
    • H01L2933/005—Processes relating to semiconductor body packages relating to encapsulations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008—Processes
    • H01L2933/0033—Processes relating to semiconductor body packages
    • H01L2933/0066—Processes relating to semiconductor body packages relating to arrangements for conducting electric current to or from the semiconductor body

Abstract

The invention relates to an RGB (Red, green and blue) lamp bead with weld legs arranged at four sides and a manufacturing method thereof, in particular to the RGB lamp bead which is manufactured by packaging three chips respectively emitting red light, green light and blue light in an LED (light-emitting diode) support, wherein the support of the RGB lamp bead is an LED support formed by embedding metal in resin, 4 weld legs are arranged at 4 sides of the bottom surface of the support of the RGB lamp bead, the weld legs are exposed from the side surface of the support, at least 4 exposed weld legs at the side surface of the RGB lamp bead are communicated with an LED chip, and the LED support is used for packaging and manufacturing the small-size RGB lamp bead with low cost.

Description

RGB lamp bead with four sides provided with welding feet and manufacturing method thereof
Technical Field
The invention relates to the field of LED lamp beads and application thereof, in particular to an RGB lamp bead with four sides provided with welding feet and a manufacturing method thereof.
Background
The lamp pearl of a plurality of feet of prior art, for example, 4 foot lamp pearls that RGB lamp pearl was used, 4 feet are respectively on two limits of lamp pearl, 2 feet on an limit, the problem of existence as follows:
(1) 2 foot on one side weld on the circuit board when using lamp pearl, lead to one of them leg rosin joint easily, lead to tin short circuit easily between two legs moreover, also easy tin short circuit when the leg maintenance after the leg rosin joint moreover.
(2) 2 feet that need to switch on every limit of lamp pearl, the rosin joint is few when guaranteeing the welding, the maintenance of being convenient for again, must bend into three-dimensional multiaspect leg, so, when the leg of the planar single face welding of making, the yield is very low during the welding, why will pursue and make flat leg woollen? The main reason is that when the flat welding foot is made, because no metal is bent and more metal is needed, the utilization rate of the material for manufacturing the lamp bead support is improved by more than 25%, the flat welding foot support is also thinner than the bent support by more than 40%, the total cost can be saved by 30%, and the support is thin, and when the lamp bead is packaged by the support, the packaging glue can be saved by 50%.
(3) 4 foot distribution is on two limits, and when RGB lamp pearl size done littleer, leg density is higher, changes the tin short circuit, leads to doing small-size lamp pearl more difficult.
In order to solve the problem which is not solved in the industry all the time, the RGB lamp bead can be made small, the cost is reduced, and a good using effect can be achieved, the invention adopts the following method to manufacture the RGB lamp bead with four welding feet at 4 sides, and the technology is overcome:
the specific method is that the RGB lamp bead is a lamp bead made by packaging three LED chips which respectively emit red light, green light and blue light in a bracket, the bracket is an LED bracket formed by embedding metal in resin, the bottom surface of the LED bracket is provided with a side, a is not less than 4 and not more than 8, the bracket is provided with b metal welding feet, b =4, the bracket is provided with c side surfaces, c is not less than 4 and not more than 8, the metal welding feet are all exposed at the bottom surface, all the metal welding feet are exposed from the side surface of the bracket, the welding feet exposed from the side surface of the bracket are distributed on d sides of the bottom, d is not less than 4 and not more than d and not more than a, the bracket is a cup-shaped bracket, e metal electrodes are arranged in a cup, f is not less than 4 and not more than 8, wherein a part of the metal electrodes are connected with the metal welding feet to form conduction, or all the metal electrodes are connected with the metal welding feet to form conduction, and the metal electrode and 4 side exposed welding feet form conduction, the single support is spliced into a plurality of connected sheet supports, three LED chips emitting red light, green light and blue light are respectively fixed on the metal electrode in the support cup, after the wire is welded by a wire bonding machine, each chip of the three chips is respectively communicated with the electrode on the bracket, packaging glue is applied in the bracket cup to seal the chip and the electrode, the packaging glue is solidified by heating, the packaging glue is split into a plurality of RGB lamp beads by a splitting machine, the chips in the manufactured RGB lamp beads are communicated with 4 welding feet exposed from the side surface, then the light-splitting machine is lighted for detection and sorting, during detection, the detector detects the bottom surface of the lamp bead, so that the LED is lighted for detection and sorting, and then RGB lamp beads with welding feet on a plurality of sides are manufactured after sorting, the RGB lamp bead is provided with at least 4 welding feet exposed from the side surface and is conducted with the LED chip, and the welding feet are distributed on at least three edges or more than three edges, so that the tin is not easy to be connected during tin soldering, and the lamp beads with small size and low cost can be manufactured.
Disclosure of Invention
The invention relates to an RGB (Red, green and blue) lamp bead with weld legs arranged at four sides and a manufacturing method thereof, in particular to the RGB lamp bead which is manufactured by packaging three chips respectively emitting red light, green light and blue light in an LED (light-emitting diode) support, wherein the support of the RGB lamp bead is an LED support formed by embedding metal in resin, 4 weld legs are arranged at 4 sides of the bottom surface of the support of the RGB lamp bead, the weld legs are exposed from the side surface of the support, at least 4 exposed weld legs at the side surface of the RGB lamp bead are communicated with an LED chip, and the LED support is used for packaging and manufacturing the small-size RGB lamp bead with low cost.
The invention provides a manufacturing method of an RGB lamp bead with welding feet arranged on four sides, and particularly the RGB lamp bead is a lamp bead which is manufactured by packaging three LED chips respectively emitting red light, green light and blue light in a support, the support is an LED support formed by embedding metal in resin, the bottom surface of the LED support is provided with a side, a is more than or equal to 4 and less than or equal to 8, the support is provided with b metal welding feet, b =4, the support is provided with c side surfaces, c is more than or equal to 4 and less than or equal to 8, the metal welding feet are exposed at the bottom surface, all the metal welding feet are exposed from the side surfaces of the support, the welding feet exposed from the side surfaces of the support are distributed on d sides of the bottom, d is more than or equal to 4 and less than or equal to 8, a part of the metal electrodes are connected with the metal welding feet to form conduction, or all the metal electrodes are connected with the metal welding feet to form conduction, and the metal electrode forms and switches on with the leg that sets up and expose in 4 sides at least, with above single support piece of piecing together the piece support of a plurality of pieces, solid brilliant on the metal electrode in the support cup with three kinds of LED chips of red glow, green glow, blue light respectively, after the bonding wire of bonding machine, each chip of three kinds of chips forms and switches on with the electrode on the support respectively, apply the encapsulation glue in the support cup, seal chip and electrode, heat and make the solidification of encapsulation glue, split into a plurality of RGB lamp pearls with the split machine, then light on the light-splitting machine and detect and sort, while detecting, the bottom surface that the detector detected lamp pearl, make the LED light and detect and sort, make a plurality of RGB lamp pearls that all have the leg after sorting, RGB lamp pearl have at least 4 sides to expose the leg and LED chip to form and switch on.
The invention also provides an RGB lamp bead with four sides provided with welding feet, which comprises: an LED support; three LED chips which respectively emit red light, green light and blue light; packaging glue; the LED lamp bead is characterized in that the RGB lamp bead is manufactured by packaging three chips respectively emitting red light, green light and blue light in an LED support, the LED support is an LED support formed by embedding metal in resin, a sides are arranged on the bottom surface of the LED support, a is not less than 4 and not more than 8, b metal welding feet are arranged on the support, b =4, c side surfaces are arranged on the support, c is not less than 4 and not more than 8, the metal welding feet are exposed out of the bottom surface, all the metal welding feet are exposed out of the side surface of the support, the welding feet exposed out of the side surface of the support are distributed on d sides of the bottom, d is not less than 4 and not more than a, the support is a cup-shaped support, e metal electrodes are arranged in a cup, f is not less than 4 and not more than 8, one part of the metal electrodes are connected with the metal welding feet to form conduction, or all the metal electrodes are connected with the metal welding feet to form conduction, the three LED chips respectively emitting red light, green light and blue light are fixedly crystallized on the metal electrodes in the cup of the support, each chip, packaging glue is bonded in the cup, and the metal electrodes, and at least 4 of the three LED chips are exposed out of the LED chip and the LED chip to form conduction.
According to a preferred embodiment of the invention, the RGB lamp bead with the four sides provided with the welding feet is characterized in that the welding feet are three-dimensional roll-foot welding feet, and the welding feet extend out of the side surfaces of the lamp bead and are rolled and pasted on the outer surfaces of the side surfaces and the bottom surface.
According to a preferred embodiment of the invention, the RGB lamp bead with the four sides provided with the welding feet is characterized in that the welding feet are plane welding feet exposed out of the bottom surface.
The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below.
Drawings
The features, objects, and advantages of the present invention will become more apparent from the description set forth below when taken in conjunction with the drawings, a brief description of which follows.
FIG. 1 is a schematic circuit plan view of a cup shaped holder with solder fillets on four sides.
Fig. 2 is a top plan view of a cup shaped holder with fillets on four sides.
FIG. 3 is a bottom plan view of a cup shaped holder with fillets on four sides.
FIG. 4 is a cross-sectional view of a cup shaped holder with fillets on four sides.
Fig. 5 is a plan view of a plurality of holder cups of a cup holder having fillets on four sides.
FIG. 6 is a top view of a plurality of frame cups of a cup-shaped frame with fillets on four sides for die bonding wires.
FIG. 7 is a schematic cross-sectional view of an RGB lamp bead with four sides provided with solder fillets.
Fig. 8 is a schematic top view of an RGB lamp bead with four sides provided with solder fillets.
Detailed Description
The present invention will be described in detail below by taking preferred embodiments as examples.
It will be understood by those skilled in the art that the following descriptions are provided for purposes of illustration and description of certain preferred embodiments only and are not intended to limit the scope of the present invention.
Example one
1. Manufacture of die-cutting die
A2835 LED bracket containing 4 pins and a cuboid bracket with the width of 2.8mmx3.5mm are designed and manufactured, wherein two sides with the width of 2.8mm are respectively provided with one welding pin 1.1, the other two sides are respectively provided with 1 welding pin 1.1, and the total number of the welding pins is 4, namely 1.1.
2. Punching support circuit prototype
Preparing a 0.20mm copper strip, punching the 0.20mm copper strip 1.1 into a support circuit prototype on a punch press by using a punching die, and electroplating silver on the support circuit prototype to plate a layer of silver on the surface of the copper strip.
3. Preparation of PPA resin
PPA resin 2.1 is injected on the copper strip by an injection mould on an injection molding machine to form a plurality of bracket cups, and the copper prototype circuit is embedded in the PPA resin.
4. Punching support
A connecting piece support containing a plurality of LED supports is manufactured by die cutting through a die, two sides of each support with 4 welding feet of 1.1 mm, 2.8mm are respectively provided with one welding foot of 1.1 mm, two sides of each support with 4 welding feet of 1.3.5 mm are respectively provided with 1 welding foot of 1.1, 4 metal electrodes are arranged in a support cup and are respectively connected and conducted with the 4 welding feet on the outer bottom surface of the support, and a cup-shaped support with welding feet on four sides is manufactured (shown in figures 1,2, 3, 4 and 5).
5. Encapsulation RGB lamp pearl
(1) Die bonding
Three chips 3.1 of red light, green light and blue light are fixed on three electrodes in a bracket cup by a die bonder, the red light chip is fixed on one electrode in the bracket cup by silver glue, then the blue light and green light chips are fixed on the other two electrodes by die bonder, and the die bonder is baked to cure the glue.
(2) And a bonding wire
The positive and negative electrodes of the three chips were connected to the metal electrodes of the cup bottom by welding with alloy wires 4.1, respectively, by a wire bonder (shown in fig. 6).
(3) Dispensing glue
And (5) dispensing the packaging glue 5.1 by using a dispenser in the cup, and baking to solidify the packaging glue.
(4) Stripping the materials
The single RGB lamp beads are split by a mold on a splitting machine to form RGB lamp beads with welding feet arranged on four sides (shown in figures 7 and 8).
(5) Spectroscopic detection
Put on the light-splitting machine in 2835 RGB lamp pearl's bottom, the bottom surface of detection lamp pearl makes the lamp pearl luminous, divides the RGB lamp pearl of selecting out a plurality of categories to divide in a plurality of boxes, clears away the defective products simultaneously.
(6) And a package
And (4) weaving the RGB lamp beads on a packaging tape by using a braiding machine.
The invention is described in detail with reference to the drawings by using a specific embodiment of an RGB lamp bead with four sides provided with solder fillets and a manufacturing method thereof. It will be understood by those skilled in the art, however, that the foregoing descriptions are merely illustrative of and descriptive of certain embodiments and that the invention, including the claims, is not to be in any way limiting.

Claims (4)

1. A method for manufacturing RGB lamp beads with welding feet arranged on four sides is characterized in that the RGB lamp beads are manufactured by packaging three LED chips which respectively emit red light, green light and blue light in a support, the support is an LED support formed by embedding metal in resin, a sides are arranged on the bottom surface of the LED support, a is more than or equal to 4 and less than or equal to 8, b metal welding feet are arranged on the support, b =4, the support is provided with c side surfaces, c is more than or equal to 4 and less than or equal to 8, the metal welding feet are exposed out of the bottom surface, all the metal welding feet are exposed out of the side surfaces of the support and distributed on d sides of the bottom, d is more than or equal to 4 and less than or equal to a, the support is a cup-shaped support, e metal electrodes are arranged in a cup, f is more than or equal to 4 and less than or equal to 8, a part of the metal electrodes are connected with the metal welding feet to form conduction, or all the metal electrodes are connected with the metal welding feet to form conduction, and the metal electrode forms and switches on with the leg that sets up and expose in 4 sides at least, with above single support piece of piecing together the piece support of a plurality of pieces, solid brilliant on the metal electrode in the support cup with three kinds of LED chips of red glow, green glow, blue light respectively, after the bonding wire of bonding machine, each chip of three kinds of chips forms and switches on with the electrode on the support respectively, apply the encapsulation glue in the support cup, seal chip and electrode, heat and make the solidification of encapsulation glue, split into a plurality of RGB lamp pearls with the split machine, then light on the light-splitting machine and detect and sort, while detecting, the bottom surface that the detector detected lamp pearl, make the LED light and detect and sort, make a plurality of RGB lamp pearls that all have the leg after sorting, RGB lamp pearl have at least 4 sides to expose the leg and LED chip to form and switch on.
2. The utility model provides a four sides set up RGB lamp pearl of leg, includes:
an LED support;
three LED chips which respectively emit red light, green light and blue light;
packaging glue;
the LED lamp bead is characterized in that the RGB lamp bead is manufactured by packaging three chips respectively emitting red light, green light and blue light in an LED support, the LED support is an LED support formed by embedding metal in resin, a sides are arranged on the bottom surface of the LED support, a is not less than 4 and not more than 8, b metal welding feet are arranged on the support, b =4, c side surfaces are arranged on the support, c is not less than 4 and not more than 8, the metal welding feet are exposed out of the bottom surface, all the metal welding feet are exposed out of the side surface of the support, the welding feet exposed out of the side surface of the support are distributed on d sides of the bottom, d is not less than 4 and not more than a, the support is a cup-shaped support, e metal electrodes are arranged in a cup, f is not less than 4 and not more than 8, a part of the metal electrodes are connected with the metal welding feet to form conduction, or all the metal electrodes are connected with the metal welding feet to form conduction, the three LED chips respectively emitting red light, green light and blue light are fixedly crystallized on the metal electrodes in the cup, each chip, the three chips are respectively formed, the LED chips are bonded in the cup, and the sealing glue, and at least 4 LED chips are exposed out of the RGB chips.
3. The RGB lamp bead with four sides provided with weld legs of claim 1 or 2, wherein the weld legs are three-dimensional roll leg weld legs which extend out of the side surfaces of the lamp bead and are rolled and attached to the outer surfaces of the side surfaces and the bottom surface.
4. The RGB lamp bead with four sides provided with welding feet as claimed in claim 1 or 2, wherein the welding feet are plane welding feet exposed on the bottom surface.
CN202110263285.8A 2021-02-28 2021-02-28 RGB lamp bead with four sides provided with welding feet and manufacturing method thereof Pending CN115440717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110263285.8A CN115440717A (en) 2021-02-28 2021-02-28 RGB lamp bead with four sides provided with welding feet and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110263285.8A CN115440717A (en) 2021-02-28 2021-02-28 RGB lamp bead with four sides provided with welding feet and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN115440717A true CN115440717A (en) 2022-12-06

Family

ID=84271979

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110263285.8A Pending CN115440717A (en) 2021-02-28 2021-02-28 RGB lamp bead with four sides provided with welding feet and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN115440717A (en)

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