WO2021098297A1

WO2021098297A1 - Wide lamp strip assembled by narrow lamp strips and manufacturing method

Info

Publication number: WO2021098297A1
Application number: PCT/CN2020/109152
Authority: WO
Inventors: 王定锋; 徐文红; 冉崇友; 徐磊; 琚生涛
Original assignee: 王定锋
Priority date: 2019-11-21
Filing date: 2020-08-14
Publication date: 2021-05-27
Also published as: CN112824746A

Abstract

The present invention relates to a wide lamp strip assembled by narrow lamp strips and a manufacturing method. Specifically, a plurality of connected short circuit boards are used for manufacturing a connected short lamp strip, and then a cutting die is used for slitting the connected short lamp strip into connected short and narrow short lamp strips with a "comb"-shaped structure; a connected long flat cable comprising a plurality of lamp strip wide flat cables is manufactured, wherein the number of the lamp strip wide flat cables in the connected long flat cable is equal to that of the short and narrow short lamp strips in the "comb"-shaped connected short lamp strip; the comb-shaped connected short and narrow short lamp strips are arranged end to end and welded to the connected long flat cable in an aligned and attached manner, or the comb-shaped connected short and narrow short lamp strips are arranged end to end, bonded to the long flat cable through an adhesive and then welded to the long flat cable; and then a slitting machine is used for slitting the connected lamp strips on the long flat cable into single long and wide lamp strips.

Description

Wide light strip assembled from narrow light strips and manufacturing method

Technical field

The invention relates to the field of LED light strips, in particular to a wide light strip assembled from narrow light strips and a manufacturing method.

Background technique

The existing LED light strips are made by a long cable with multiple light strip cables and a long circuit board with multiple light strip circuit boards. After glueing together, the LED and control components are soldered on the circuit board. , And then cut into a single long light strip. This light strip circuit board is the same width as the cable, both wide and long, because the circuit board is expensive, and the circuit board is too wide, which leads to the higher cost of the light strip.

On the other hand, the prior art directly uses flip-chips to make wide light strips, and also uses wide circuit boards and ribbon cables to paste together, and then flip-chip welding LED chips on the circuit boards, resulting in too wide circuit boards and high cost. Too wide leads to too long the positioning path of the flip chip die bonder when attaching the chip, resulting in low efficiency.

In order to overcome the above shortcomings and shortcomings, the present invention makes a narrow circuit board into a narrow light strip, and then divides it into two into a "comb"-shaped conjoined structure, welded to the conjoined long cable, or glued it. , And then solder to the long cable, and then slit the long and wide wide light strip, the circuit board is narrowed and the cost is reduced, and the efficiency of the flip-chip soldering chip is also much higher, which greatly reduces the overall cost.

Summary of the invention

The present invention relates to a wide light strip assembled from narrow light strips and a manufacturing method. Specifically, a plurality of conjoined short circuit boards are used to make a conjoined short light strip, which is then divided into a "comb"-like structure with a knife die The conjoined short and narrow short light strip, and then make a long conjoined cable with multiple lamp bandwidth cables, the number of lamp bandwidth cables in the conjoined long cable is equal to the "comb"-shaped conjoined short lamp The number of short and narrow short strips in the strip. Arrange the comb-shaped conjoined short and narrow short strips end to end, and connect them to the long strip of conjoined strips by welding, or connect the comb-shaped conjoined short and narrow strips. The narrow and short light strips are arranged end to end, glued to the long cable with adhesive, and then welded to the long cable, and then cut into a single long and wide wide lamp with a slitting machine.

According to the present invention, there is provided a method for manufacturing wide light strips assembled from narrow light strips. Specifically, multiple pieces of conjoined short circuit boards are used to make conjoined short light strips, which are then divided into two with a die. The "comb"-like structure of the conjoined short and narrow short light strips, and then the one-piece long cable containing multiple wide cables, and the multiple "comb"-shaped conjoined short and narrow short light strips are arranged end to end. , Butt welding to connect to the long cable, or to arrange multiple "comb"-shaped connected short and narrow light strips end to end, first stick to the long cable with adhesive, and then weld to the long cable. On the cable, remove the "comb"-shaped connecting body of multiple short and narrow short light strips, or keep the comb-shaped connecting body of multiple short and narrow short light strips, and then use a slitting machine to cut into A single long, wide, and wide light strip. The long, wide, and wide light strip made includes a number of short and narrow short strips arranged end to end. The short and narrow short strips are lights with a straight strip structure. Strips, or short and narrow short strips are strips of special-shaped structure. The width of one end of the short and narrow strips in the wide strip is equal to the width of the wide strip, except for this end, the other short strips The width of the positions is less than the width of the wide light strip, or the width of all positions of the short and narrow short light strip is less than the width of the wide light strip.

According to the present invention, there is also provided a wide light strip assembled from narrow light strips, including: long and wide long cables; short and narrow short light strips; characterized in that the long and wide long cables are used A cable formed by pasting at least two wires arranged in parallel on a layer of film, or a cable formed by sticking at least two wires arranged in parallel with a two-layer film clip, or a film and a layer of ink clipped on at least two The cable is formed by parallelly arranged wires. There are solder joints formed by exposed wires on the cable. The short and narrow light strips are made by welding LED lamp beads encapsulated by the bracket on the circuit board. Light strips, or short and narrow short strips made by LED flip-chip soldering on the circuit board. The short and narrow strips are strip-shaped strips, or short and narrow strips. It is a light strip with a special-shaped structure. The light strip is an LED light strip welded with LEDs or welded with LEDs and control elements. The wide light strip assembled by the narrow light strip is arranged end-to-end with multiple short and narrow short light strips. The long and wide light strips are formed by soldering on the long and wide long cable, or multiple short and narrow short light strips are arranged end to end, and they are glued to the long and wide long cable. The long, wide, and wide light strips are formed by soldering on the long and wide cables, and assembled into a short and narrow short light strip in the wide strip. The width of one end of the strip is equal to the width of the wide strip, except for this end. , The width of other positions of the short light strip is less than the width of the wide light strip, or the width of all positions of the short and narrow short light strip is less than the width of the wide light strip.

According to a preferred embodiment of the present invention, the wide light strip assembled from narrow light strips is characterized in that the width of each wide light strip is the width of each cable, and the width dimension is A, the average width dimension of the short and narrow narrow light strip is B, 2B-3mm<A<2B+3mm.

According to a preferred embodiment of the present invention, the wide light strip assembled from narrow light strips is characterized in that each of the narrow light strips is pasted in the middle of each cable, and the wide light strips In the width direction of the strip, the distance from the edge of one side of the LED element of the short, narrow, narrow strip to the same side edge of the wide strip is C, and the other side of the LED element of the short, narrow, narrow strip The distance from the edge of the light strip to the edge on the same side of the wide light strip is D, D-4mm<C<D+4mm.

According to a preferred embodiment of the present invention, the wide light strip assembled from a narrow light strip is characterized in that the short light strip is welded to the flat wire by directly connecting the solder joints of the short light strip circuit board and Flat wire solder joint welding, or welding the two ends of the short light strip, reverse fold to the back and solder the flat wire solder joints together.

In the following description of the drawings and specific embodiments, details of one or more embodiments of the present invention will be explained.

Description of the drawings

The features, purposes and advantages of the present invention will become more apparent by reading this specification in conjunction with the following drawings. A brief description of the drawings is as follows.

Figure 1 is a schematic front plan view of a long cable.

Fig. 2 is a schematic cross-sectional view of a long cable with a plurality of wires sandwiched by two layers of films.

Fig. 3 is a schematic cross-sectional view of a long cable of a layer of film.

Figure 4 is a schematic cross-sectional view of a long line of a layer of film and a layer of ink.

Fig. 5 is a schematic plan view of a conjoined short strip of multiple short strips of LED lamp beads with brackets.

Fig. 6 is a schematic plan view of a "comb"-shaped conjoined short light strip of LED lamp beads with a bracket.

Fig. 7 is a schematic plan view of a conjoined short light strip with flip-chip.

Fig. 8 is a schematic plan view of a "comb"-shaped conjoined short light strip with a flip chip.

Figure 9 is a schematic plan view of a "comb"-shaped conjoined short light strip with a flip chip.

Figure 10 is a schematic plan view of a "comb"-shaped conjoined short light strip with a flip chip.

Figure 11 is a schematic plan view of a "comb"-shaped conjoined short light strip with a flip chip.

Figure 12 is a schematic plan view of a "comb"-shaped conjoined short light strip with a flip chip.

Fig. 13 is a schematic plan view of a "comb"-shaped conjoined short light strip with a flip chip.

Fig. 14 is a schematic plan view of a wide light strip made of flip chip.

Figure 15 is a schematic plan view of a wide light strip made of flip chip.

Fig. 16 is a schematic cross-sectional view of a wide light strip made of flip chip.

Figure 17 is a schematic cross-sectional view of a wide light strip made of an adhesive containing flip-chips.

Fig. 18 is a schematic plan view of a wide light strip made of flip chip.

Figure 19 is a schematic cross-sectional view of a wide light strip made of flip-chip.

Figure 20 is a schematic cross-sectional view of a wide light strip made of an adhesive containing flip-chips.

Figure 21 is a schematic plan view of a wide light strip made of LED lamp beads with brackets.

Figure 22 is a schematic cross-sectional view of a wide light strip made of LED lamp beads with brackets.

Fig. 23 is a schematic cross-sectional view of a wide lamp strip made of adhesive for LED lamp beads with brackets.

Fig. 24 is a schematic plan view of a short and narrow light strip with a straight strip structure.

Fig. 25 is a schematic plan view of a short and narrow light strip with a special-shaped structure.

Detailed ways

Hereinafter, the present invention will be described in detail by taking a preferred embodiment as an example.

However, those skilled in the art should understand that the following descriptions are merely examples to illustrate and describe some preferred embodiments, and do not impose any limitation on the claims of the present invention.

Example

1. The production of long cables

1.1. Long cable with two layers of film

After punching a layer of film 1.2 with glue with a die, and with another layer of film 1.2 with glue, sandwich multiple wires 1.3 in the middle to make a two-layer film with multiple wires. Flat wire 1.1 (shown in Figure 1 and Figure 2) is reserved.

1.2, a long line of film

After punching a layer of film 1.2 with glue with a mold, paste a plurality of parallel wires 1.3 to form a long cable 2.1 (shown in Figure 1 and Figure 3) of a layer of film for use.

1.3, a long line of film and a layer of ink

A layer of glue film 1.2 is laminated with multiple parallel wires 1.3 to make a flat wire, and then the side of the wire is exposed on the flat wire, and the solder mask 1.4 is printed and the metal solder joint 1.5 is exposed, and the ink is baked to form a layer The long cable 3.1 (shown in Figure 1 and Figure 4) of the film and a layer of ink is available for use.

2. The production of short light strips

2.1. The "comb"-shaped conjoined short strip of LED lamp beads with brackets

On multiple pieces of conjoined short flexible circuit board 4.2 with multiple lights with circuit boards, use SMT process to paste and solder the LED lamp beads with brackets 4.3 and resistors 4.4 to make multiple pieces of LED lamp beads with brackets. One piece of short light strip 4.1 (shown in Figure 5), cut each piece with a knife mold into two "comb"-shaped conjoined short light strips 5.1 ( Figure 6) Standby.

2.2. "Comb"-shaped conjoined short light strip with flip chip

Use SMT process to paste resistor 4.4 on multiple short flexible circuit boards 4.6 with multiple light strip circuit boards, and then use a die bonder to fix the flip chip 4.7 with solder paste on the circuit board, and reflow Soldering makes the chip and resistance welded on the circuit board to make a short light strip with flip chip (shown in Figure 7), and then apply phosphor containing glue 4.8 on the surface of the flip chip, resistor and circuit board, and heat After curing, multiple pieces of conjoined short light strips containing multiple short light strips are made, and each piece is cut into two "comb"-shaped conjoined short light strips with flip-chips (Figure 8. As shown in Figure 9, Figure 10, Figure 11, Figure 12, and Figure 13) for use.

3. Assemble into a wide light strip

Combine any one of the 3 types of cables made in the first step above and any of the two short light strips made in the second step into a long light strip. The following are two methods:

3.1. Paste the "comb"-shaped conjoined short light strips on the long cable, and weld each short light strip and each long cable together to form a conductive connection, and then use a slitting machine to cut into pieces A single strip, made into a wide light strip, is characterized in that the width of the wide light strip is twice the width of the narrow light strip (as shown in Figure 14, Figure 15, Figure 16, Figure 18, Figure 19, Figure 21, Figure 22 ).

3.2. Glue the "comb"-shaped conjoined short light strip to the long cable with adhesive 7.1, and then weld it with the long cable to make a wide light strip, which is characterized in that the width of the wide light strip is narrow Double the width of the light strip (shown in Figure 14, Figure 15, Figure 17, Figure 18, Figure 20, Figure 21, Figure 23).

The present invention has been described in detail above with reference to the specific embodiments of a wide light strip assembled from a narrow light strip and a manufacturing method thereof with reference to the accompanying drawings. However, those skilled in the art should understand that the above descriptions are merely examples to illustrate and describe some specific embodiments, and do not impose any limitation on the scope of the present invention, especially the scope of the claims.

Claims

A method for manufacturing wide light strips assembled from narrow light strips. Specifically, multiple pieces of conjoined short circuit boards are used to make conjoined short light strips, which are then divided into two pieces with a die and cut into a "comb"-like structure Conjoined short and narrow short strips, then make a long strip with multiple wide strips, arrange multiple "comb"-shaped conjoined short and narrow strips end to end, butt welded To the long platoon cable, or arrange multiple "comb"-shaped continual short and narrow light strips end to end, first stick to the long platoon cable with adhesive, and then weld to the long platoon cable to remove A "comb"-shaped connecting body of multiple short and narrow short strips, or a comb-shaped connecting body of multiple short and narrow short strips, and then cut into a single long and wide strip with a slitting machine The wide light strip made of the long and wide wide light strip contains a number of short and narrow short strips arranged end to end. The short and narrow short strips are straight strips of light strips, or short and narrow strips. The narrow short strip is a strip with a special-shaped structure. The width of one end of the short and narrow strip in the wide strip is equal to the width of the wide strip. Except for this end, the width of the other positions of the short strip is smaller than that of the wide strip. The width of the wide light strip or the width of all positions of the short and narrow short light strip is smaller than the width of the wide light strip.
A wide light strip assembled from narrow light strips, including:

Long and wide long cable;

Short and narrow light strips;

It is characterized in that the long and wide long cable is formed by pasting at least two parallelly arranged wires with one layer of film, or is formed by bonding at least two parallelly arranged wires with two layers of film. Or it is a cable formed by bonding at least two wires arranged in parallel with a layer of film and a layer of ink. The cable has solder joints formed by exposed wires, and a short and narrow light strip is a LED lamp packaged with a bracket. A short and narrow light strip made by welding beads on a circuit board, or a short and narrow light strip made by LED flip-chip welding on a circuit board. The short and narrow short strip is straight. A light strip with a rectangular structure, or a short and narrow short light strip is a light strip with a special-shaped structure. The light strip is an LED light strip welded with LEDs or LEDs and control elements. The narrow light strip is assembled with a wide light strip, It is a long and wide wide light strip formed by multiple short and narrow short light strips arranged end to end and soldered on a long and wide long row of wires, or multiple short and narrow short light strips are arranged end to end. The long and wide wide light strip formed by glueing on the long and wide long cable and soldering on the long and wide long cable is assembled into a short and narrow short lamp in the wide lamp strip. The width of one end of the strip is equal to the width of the wide strip. Except for this end, the width of the other positions of the short strip is less than the width of the wide strip, or the width of all positions of the short and narrow short strip is less than the width of the wide strip. width.
A wide light strip assembled from narrow light strips according to claim 1 or 2, wherein the width of each wide light strip is the width of each cable, and the width dimension is A, so The average width dimension of the short and narrow narrow light strip is B, 2B-3mm<A<2B+3mm.
The wide light strip assembled from narrow light strips according to claim 1 or 2, characterized in that, each narrow light strip is pasted in the middle of each cable, and the width of the wide light strip is In the direction, the distance from the edge of one side of the LED element of the short and narrow narrow light strip to the same side edge of the wide light strip is C, and the edge of the other side of the LED element of the short, narrow narrow light strip is to The distance between the other edge of the wide light strip on the same side is D, D-4mm<C<D+4mm.
The wide light strip assembled from a narrow light strip according to claim 1 or 2, characterized in that, the short light strip is welded to the flat wire by directly welding the circuit board solder joints and the flat wire of the short light strip. Spot welding, or the solder joints of both ends of the short light strip, folded back to the back and soldered together with the flat wire solder joints.