阅读说明：本技术 一种led制造工艺 (LED manufacturing process ) 是由 罗鉴 黄巍 林德顺 翁平 杨永发 李国平 于 2021-09-02 设计创作，主要内容包括：一种LED制造工艺,包括以下步骤：(1)冲压,在铜片卷材上冲压出若干单颗焊盘支架,单颗焊盘支架纵向两侧设有纵向料带,单颗焊盘支架横向两侧设有横向料带,纵向料带和横向料带相互连接形成料架,焊盘通过金属连接部与横向料带连接；(2)电镀；(3)注塑,在铜片卷材上单颗焊盘支架位置注塑成型出塑料碗杯；(4)外观,在塑料不良的位置涂黑标记；(5)包装,将带有焊盘支架和塑料碗杯的铜片卷材卷绕在卷盘上；(6)封装,通过卷盘放卷铜片,并在塑料碗杯内进行固晶、焊线和点胶；(7)剥料,对料卷铜片进行连续冲压,切断第一金属连接部、第二金属连接部和注塑导槽,单颗LED与料架分离。(An LED manufacturing process comprising the steps of: (1) stamping, namely stamping a plurality of single pad supports on the copper sheet coiled material, wherein longitudinal material belts are arranged on the two longitudinal sides of each single pad support, transverse material belts are arranged on the two transverse sides of each single pad support, the longitudinal material belts and the transverse material belts are connected with each other to form a material rack, and the pads are connected with the transverse material belts through metal connecting parts; (2) electroplating; (3) performing injection molding, namely performing injection molding on the position of a single pad support on the copper sheet coiled material to form a plastic bowl cup; (4) appearance, blacking out marks at the positions of poor plastics; (5) packaging, namely winding the copper sheet coiled material with the pad bracket and the plastic bowl on a reel; (6) packaging, namely unreeling a copper sheet through a reel, and carrying out die bonding, wire bonding and dispensing in a plastic bowl; (7) and stripping materials, continuously stamping the material-wound copper sheet, cutting off the first metal connecting part, the second metal connecting part and the injection molding guide groove, and separating the single LED from the material rack.)

1. An LED manufacturing process, comprising the steps of:

(1) stamping, namely stamping a plurality of single pad supports on a copper sheet coiled material, wherein longitudinal material belts are arranged on the two longitudinal sides of each single pad support, transverse material belts are arranged on the two transverse sides of each single pad support, the longitudinal material belts and the transverse material belts are connected with each other to form a material rack, each single pad support comprises an anode pad and a cathode pad, an isolation groove is arranged between each anode pad and each cathode pad, a stamping empty groove is arranged between each single pad support and the two longitudinal material belts on the two sides, the isolation grooves are communicated with the stamping empty grooves, one end of each anode pad is connected with the transverse material belt on one side of each single pad support through a first metal connecting part, and one end of each cathode pad is connected with the transverse material belt on the other side of each single pad support through a second metal connecting part;

(2) electroplating, namely electroplating the surface of the copper sheet coiled material;

(3) performing injection molding, namely performing injection molding on a single pad support on the copper sheet coiled material to form a plastic bowl cup, wherein the positive pad and the negative pad are embedded at the bottom of the plastic bowl cup, the longitudinal two sides of the plastic bowl cup are separated from the longitudinal material belt, and the transverse two sides of the plastic bowl cup are connected with the transverse material belt only through the first metal connecting part and the second metal connecting part;

(4) appearance, painting black marks on the positions of the plastic defects through appearance detection;

(5) packaging, namely winding the copper sheet coiled material with the pad bracket and the plastic bowl on a reel;

(6) packaging, namely unreeling a copper sheet through a reel, and carrying out die bonding, wire bonding and dispensing in a plastic bowl;

(7) and stripping materials, continuously stamping the material-wound copper sheet, cutting off the first metal connecting part, the second metal connecting part and the injection molding guide groove, and separating the single LED from the material rack.

2. An LED manufacturing process according to claim 1, wherein: the first metal connecting part is arranged in the middle of one end of the positive electrode bonding pad; the second metal connecting part is arranged in the middle of one end of the negative electrode bonding pad.

3. An LED manufacturing process according to claim 1, wherein: the positive electrode bonding pad, the negative electrode bonding pad, the first metal connecting portion, the second metal connecting portion, the longitudinal material belt and the transverse material belt are integrally formed in a punching mode.

4. An LED manufacturing process according to claim 1, wherein: the middle position of one end of the positive bonding pad, which corresponds to the first metal connecting part, is convex; and the middle position of one end of the negative electrode bonding pad corresponding to the second metal connecting part is convex.

5. An LED manufacturing process according to claim 4, wherein: when stripping the material, the root part of the first metal connecting part connected with the positive electrode bonding pad is broken, and the root part of the second metal connecting part connected with the negative electrode bonding pad is broken.

6. An LED manufacturing process according to claim 1, wherein: the two sides of the material rack in the length direction correspond to the transverse material belt and are punched with a plurality of cutting grooves.

7. An LED manufacturing process according to claim 1, wherein: and the widths of the two ends of the transverse material belt are narrowed to form on-line extraction measurement anode and cathode disconnection points.

Technical Field

The invention relates to the field of LEDs, in particular to an LED manufacturing process.

Background

The existing LED manufacturing process flow is as follows: stamping, namely stamping a plurality of single pad supports, longitudinal material belts and transverse material belts on a copper sheet, wherein the single pad supports are arranged between the adjacent transverse material belts and the adjacent longitudinal material belts, each single pad support comprises an anode pad and a cathode pad, the anode pad and the cathode pad are connected with the transverse material belts through metal connecting belts, and one side of each longitudinal material belt, which faces towards the corresponding pad support, is provided with a raised clamping point; electroplating, namely performing electroplating treatment on the surface of the copper sheet; injection molding, namely injection molding a plastic bowl cup at the position of the pad support, and embedding the metal connecting belt and the clamping points into the plastic bowl cup to form connection; appearance, finding out the plastic bowl with poor injection molding through appearance detection and separating the plastic bowl by a stamping mode; stamping, namely cutting off the metal connecting belt and the injection molding guide groove in a stamping mode, and only remaining clamping points for fixedly supporting the plastic bowl cup; packaging, cutting the copper sheet coiled material into pieces; packaging, namely die bonding, wire bonding and dispensing in a plastic bowl on the chip mounting bracket; and (4) stripping, namely stripping the material by using a roller, and turning the edge of the material belt to separate the clamping point from the single LED. The LED manufacturing process has the following defects: the clamp point control is too shallow and easy to drop particles, the clamp point is too deep, the material is stripped and the support structure is easy to damage, and the particles are easy to drop due to deformation or dropping in the packaging process; the fluorescent agent at the particle dropping position dirties the dispensing bottom plate and the bonding pad adhesive; as shown in FIG. 4, due to the existence of the clamping points, grooves 11 are formed on two sides of the plastic bowl 10, which affects the flatness of two sides of a single LED, so that the LED is clamped at the track of the light splitting machine.

Disclosure of Invention

The invention aims to solve the technical problem of providing an LED manufacturing process, wherein the situation of falling off and falling particles cannot occur in the packaging process; the process flow is reduced, and the production cost is reduced.

In order to solve the technical problems, the technical scheme of the invention is as follows: an LED manufacturing process comprising the steps of:

(1) stamping, namely stamping a plurality of single pad supports on a copper sheet coiled material, wherein longitudinal material belts are arranged on the two longitudinal sides of each single pad support, transverse material belts are arranged on the two transverse sides of each single pad support, the longitudinal material belts and the transverse material belts are connected with each other to form a material rack, each single pad support comprises an anode pad and a cathode pad, an isolation groove is arranged between each anode pad and each cathode pad, a stamping empty groove is arranged between each single pad support and the two longitudinal material belts on the two sides, the isolation grooves are communicated with the stamping empty grooves, one end of each anode pad is connected with the transverse material belt on one side of each single pad support through a first metal connecting part, and one end of each cathode pad is connected with the transverse material belt on the other side of each single pad support through a second metal connecting part;

(2) electroplating, namely electroplating the surface of the copper sheet coiled material;

(3) performing injection molding, namely performing injection molding on a single pad support on the copper sheet coiled material to form a plastic bowl cup, wherein the positive pad and the negative pad are embedded at the bottom of the plastic bowl cup, the longitudinal two sides of the plastic bowl cup are separated from the longitudinal material belt, and the transverse two sides of the plastic bowl cup are connected with the transverse material belt only through the first metal connecting part and the second metal connecting part;

(4) appearance, painting black marks on the positions of the plastic defects through appearance detection;

(5) packaging, namely winding the copper sheet coiled material with the pad bracket and the plastic bowl on a reel;

(6) packaging, namely unreeling a copper sheet through a reel, and carrying out die bonding, wire bonding and dispensing in a plastic bowl;

(7) and stripping materials, continuously stamping the material-wound copper sheet, cutting off the first metal connecting part, the second metal connecting part and the injection molding guide groove, and separating the single LED from the material rack.

According to the invention, the LED manufacturing process flow is changed, the clamping points on the edge of the longitudinal material belt are removed, and the plastic bowl and the bonding pad are supported only by the metal connecting part, so that the problems of damage and easy falling of the inverted bracket due to the clamping points are solved; in the packaging process, bad plastic bowls and pad supports do not need to be washed away, so that the process flow can be saved; in the material stripping process, continuous operation is performed in the material rolling unreeling and stamping modes, the operation efficiency is high, and the material is stored in the material rolling mode, so that the package can be saved; in the light splitting process, due to the fact that two sides of a single LED are flat, materials cannot be clamped at the track of the light splitting machine.

As an improvement, the first metal connecting part is arranged in the middle of one end of the positive electrode bonding pad; the second metal connecting part is arranged in the middle of one end of the negative electrode bonding pad.

As an improvement, the positive electrode bonding pad, the negative electrode bonding pad, the first metal connecting part, the second metal connecting part, the longitudinal material belt and the transverse material belt are integrally formed in a punching mode.

As an improvement, the middle position of one end of the positive electrode bonding pad corresponding to the first metal connecting part is convex; and the middle position of one end of the negative electrode bonding pad corresponding to the second metal connecting part is convex.

As an improvement, during stripping, the root part of the first metal connecting part connected with the positive electrode bonding pad is broken, and the root part of the second metal connecting part connected with the negative electrode bonding pad is broken.

As the improvement, a plurality of cutting grooves are punched on two sides of the material rack in the length direction corresponding to the transverse material belt.

As an improvement, the width of the two ends of the transverse material belt is narrowed to form an on-line extraction measurement anode and cathode disconnection point.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the LED manufacturing process flow is changed, the clamping points on the edge of the longitudinal material belt are removed, and the plastic bowl and the bonding pad are supported only by the metal connecting part, so that the problems of damage and easy falling of the inverted bracket due to the clamping points are solved; in the packaging process, bad plastic bowls and pad supports do not need to be washed away, so that the process flow can be saved; in the material stripping process, continuous operation is performed in the material rolling unreeling and stamping modes, the operation efficiency is high, and the material is stored in the material rolling mode, so that the package can be saved; in the light splitting process, due to the fact that two sides of a single LED are flat, materials cannot be clamped at the track of the light splitting machine.

Drawings

FIG. 1 is a process diagram of the manufacturing process of the present invention.

Fig. 2 is a schematic diagram of a copper sheet after a stamping process.

FIG. 3 is a schematic diagram of a copper sheet after injection molding process.

Fig. 4 is a schematic diagram of a single LED manufactured by a conventional process.

FIG. 5 is a schematic view of a single LED manufactured by the process of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, an LED manufacturing process includes the following steps:

(1) stamping, as shown in fig. 2, stamping a plurality of single pad supports on a copper sheet coiled material, wherein longitudinal material belts 1 are arranged on two longitudinal sides of each single pad support, transverse material belts 2 are arranged on two transverse sides of each single pad support, the longitudinal material belts 1 and the transverse material belts 2 are connected with each other to form a material rack, each single pad support comprises an anode pad 4 and a cathode pad 5, an isolation groove is arranged between the anode pad 4 and the cathode pad 5, a stamping empty groove is arranged between each single pad support and the longitudinal material belts 1 on the two sides, the isolation groove is communicated with the stamping empty groove, one end of the anode pad 4 is connected with the transverse material belt 2 on one side of each single pad support through a first metal connecting part 7, and one end of the cathode pad 5 is connected with the transverse material belt 2 on the other side of each single pad support through a second metal connecting part 6; the positive electrode bonding pad 4, the negative electrode bonding pad 5, the first metal connecting part 7, the second metal connecting part 6, the longitudinal material belt 1 and the transverse material belt 2 are integrally formed in a punching mode; the middle position of one end of the positive electrode bonding pad 4 corresponding to the first metal connecting part 7 is convex; the middle position of one end of the negative electrode bonding pad 5, which corresponds to the second metal connecting part 6, is convex, and the first metal connecting part 7 is arranged at the middle position of one end of the positive electrode bonding pad 4; the second metal connecting part 6 is arranged in the middle of one end of the negative electrode bonding pad 5;

(2) electroplating, namely electroplating the surface of the copper sheet coiled material;

(3) performing injection molding, namely performing injection molding on a single pad support on the copper sheet coiled material to form a plastic bowl cup 10, wherein the positive pad 4 and the negative pad 5 are embedded at the bottom of the plastic bowl cup 10, the longitudinal two sides of the plastic bowl cup 10 are separated from the longitudinal material belt 1, and the transverse two sides of the plastic bowl cup 10 are connected with the transverse material belt 2 only through the first metal connecting part 7 and the second metal connecting part 6;

(4) appearance, painting black marks on the positions of the plastic defects through appearance detection;

(5) packaging, namely winding the copper sheet coiled material with the pad bracket and the plastic bowl 10 on a reel;

(6) packaging, namely unreeling the copper sheet through a reel, and carrying out die bonding, wire bonding and dispensing in the plastic bowl 10;

(7) and stripping, continuously punching the copper sheet wound on the material roll, punching at the root part of the first metal connecting part 7 connected with the positive electrode bonding pad 4, punching at the root part of the second metal connecting part 6 connected with the negative electrode bonding pad 5, and cutting off the injection molding guide groove to separate the single LED from the material rack.

According to the invention, the LED manufacturing process flow is changed, the clamping points on the edge of the longitudinal material belt 1 are removed, and the plastic bowl 10 and the bonding pad are supported only by the metal connecting part, so that the problems of damage and easy falling of the inverted bracket due to the clamping points are solved; in the packaging process, the defective plastic bowl 10 and the pad bracket do not need to be washed away, so that the process flow can be saved; in the material stripping process, continuous operation is performed in the material rolling unreeling and stamping modes, the operation efficiency is high, and the material is stored in the material rolling mode, so that the package can be saved; as shown in fig. 5, in the light splitting process, since two sides of a single LED are flat, the material is not blocked at the track of the light splitter.

As shown in fig. 2, a plurality of cutting grooves 8 are punched on two sides of the rack in the length direction corresponding to the transverse material belt 2, and the material roll is cut at the positions of the cutting grooves 8 to obtain the material roll with the required length.

As shown in fig. 2, the width of the two ends of the transverse material tape 2 is narrowed to form an on-line spot for measuring the positive and negative break points 3, and when a single LED needs to be measured, the on-line spot for measuring the positive and negative break points is broken, so that the positive and negative of the single LED are broken, and the narrowed copper sheet is more easily broken.