WO2021114705A1

WO2021114705A1 - Special-shaped led light strip and manufacturing method

Info

Publication number: WO2021114705A1
Application number: PCT/CN2020/109340
Authority: WO
Inventors: 王定锋; 徐文红; 冉崇友; 徐磊; 宋健
Original assignee: 王定锋
Priority date: 2019-12-11
Filing date: 2020-08-14
Publication date: 2021-06-17
Also published as: CN112944230A

Abstract

The present invention relates to a specially-shaped LED light strip and a manufacturing method. Specifically, light strip circuit boards are designed to be arranged in parallel. From top to bottom, each two vertically adjacent light strip circuit boards are connected to each other in an offset manner, that is, odd-numbered light strip circuit boards are offset relative to even-numbered light strip circuit boards. On each circuit board, a portion to which an LED is soldered or an LED and a control element are soldered is designed to be relatively wide, and all of or part of vacant portions to which no element is soldered are designed to be relatively narrow. A relatively narrow portion of a board is present between relatively wider portions of two boards horizontally adjacent thereto. The number of light strips per square meter on a conjoined circuit board comprising multiple circuit boards, designed and manufactured in this way, is increased by 25% or more, thereby significantly reducing costs. After elements are soldered to the circuit board, a double-sided adhesive tape is adhered to a back surface thereof, and then the circuit board is cut into multiple single light strips by means of a cutting die. The single light strip has the following features: a portion of the single strip to which an LED is soldered is relatively wide, and a portion of the single strip on which no element is located is relatively narrow. In addition, on side surfaces of two sides of a lengthwise direction, side surfaces of two sides of the circuit board on the light strip and side surfaces of two sides of the double-sided adhesive tape on the back surface of the light strip are on respective cutter surfaces. The special-shaped light strip designed and manufactured in this way improves a utilization rate of the circuit board and the double-sided adhesive tape, and significantly reduces costs.

Description

A special-shaped LED light strip and manufacturing method

Technical field

The invention relates to the field of LED light strips, in particular to a special-shaped LED light strip and a manufacturing method.

Background technique

In order to improve production efficiency in the production of circuit boards in the prior art, multiple narrow strips are assembled into a large board for production. The existing technical solutions produce multiple conjoined large boards, and a single circuit board is a rectangular board. , Or a special-shaped strip that occupies the largest space in the long direction. The circuit board made by this design has low material utilization and high cost.

In order to overcome the above shortcomings and shortcomings, the present invention adopts the following methods to design and manufacture, and realize the increase of the number of light strip boards on the same area by more than 25%, and the utilization rate of double-sided tape by more than 25%, which is equivalent to For the same amount of money, you can buy more than 25% more light strip circuit boards than the old technology and save more than 25% of the double-sided tape, which greatly saves costs. The cost of the light strip made with this circuit board is low.

The light strip circuit boards are designed to be arranged in parallel, and one misplaced panel is spaced from top to bottom. The odd-numbered light strip boards and the even-numbered light strip boards are arranged in a staggered manner. Each circuit board is soldered to the LED The position or the position of the welding LED and the control element is designed to be widened. In all the blank positions or part of the blank positions of the solderless components, both sides are designed to narrow toward the middle. The narrowing of each strip is the adjacent board on the left and right. At the widening, this design method is used to make a conjoined circuit board with multiple circuit boards. This design is to make full use of the position of the circuit board without soldering components, and make way for the welding of two adjacent boards. The LED area is widened, and the cost of the double-sided tape attached to the reverse side of this circuit board is also saved by more than 25%, and the cost of the light strip made of this circuit board is low.

Summary of the invention

The invention relates to a special-shaped LED light strip and a manufacturing method. Specifically, the light strip circuit board is designed to be arranged in parallel, and one misaligned panel is spaced from top to bottom, and the odd-numbered and even-numbered positions are arranged in a misaligned manner. , Each circuit board is designed to be wider at the position of welding LED or the position of welding LED and control components. It is designed to be narrow in all blank positions or part of the blank positions of solderless components. The narrow part of each line is the left and right sides. The wider part of the adjacent board is made into a connected circuit board with multiple circuit boards in this design method, which increases the number of light bars per unit area per square meter, increasing the number by more than 25%, which is very heat saving In order to reduce the cost, after using this circuit board to paste the components, paste the double-sided tape on the back, and then use a knife to cut into a single light strip. The characteristic of a single light strip is that the light strip is wider at the place where the LED is welded and where there is no component. Narrow, and on the sides of the two sides in the long direction, the sides of the circuit board on the light strip and the sides of the double-sided tape on the back of the light strip are respectively on a cutting surface. The special-shaped lamp made by this design With the tape, the utilization rate of the circuit board and the double-sided tape is improved, and the cost is significantly reduced.

According to the present invention, there is provided a method for manufacturing a special-shaped LED light strip. Specifically, the light strip circuit board is designed to be arranged in parallel, and one misplaced panel is spaced from top to bottom. The odd-numbered light strip board It is arranged in a staggered arrangement with the even-numbered light bar boards. Each circuit board is designed to be wider at the position of welding LED or at the position of welding LED and control components, and it is designed to be narrower in all blank positions or part of blank positions of solderless components. Moreover, the two sides of each strip are narrowed toward the middle, and the narrower part of each strip is the wider part of the adjacent board on the left and right. The conjoined LED strip with multiple circuit boards is designed and manufactured in this way. The circuit board is to make full use of the position of all undesigned soldering components or part of the undesigned soldering components of the circuit board, and the freed position is used at the welding LED of two adjacent boards or used at the LED welding and welding At the control element, the number of light strip circuit boards is increased in the same area. Use the circuit board to solder the LED or LED and the control element, paste the double-sided tape on the back and then use the slitting machine to divide, or apply waterproof on the surface first After the light-transmitting glue, double-sided tape is attached on the back, and then the slitting machine divides into a single special-shaped light strip. The characteristic of the special-shaped light strip is that the light strip is wider at the position where the LED is welded, or when the LED is welded. And the control element is wider, narrower at all no-element positions, or narrower at some no-element positions, and on both sides of the long direction, the sides of the circuit board on the light strip and the back of the light strip The two sides of the double-sided tape are on a cutting surface. The special-shaped light strip made by this design has zero spacing between the strips, which does not produce waste material discharge, and improves the circuit board and double-sided tape. Utilization rate significantly reduces costs.

According to the present invention, there is also provided a special-shaped LED light strip, including: double-sided adhesive; circuit board; LED or LED and control element; characterized in that the double-sided adhesive is glued to the back of the circuit board, LED or LED and control element Soldered on the front of the circuit board, the light strip is wider at the welding LED position, or wider at the welding LED and control components, narrower at all non-component positions, or narrower at some non-component positions, and The narrower part is that both sides of the light strip are narrowed toward the middle. The circuit board and components on the upper surface of the light strip are exposed, or there is a layer of light-transmitting and waterproof glue glued to the circuit board and components on the upper surface of the light strip. On the two sides of the long direction of the light strip, the sides of the circuit board of the light strip and the sides of the two sides of the double-sided tape on the back of the light strip are respectively on a cutting surface. The special-shaped light strip made by this design , Improve the utilization rate of the circuit board and double-sided tape, and significantly reduce the cost.

According to a preferred embodiment of the present invention, the special-shaped LED light strip is characterized in that when there is a layer of waterproof glue on the upper surface of the light strip, on both sides of the light strip in the long direction, the line The two sides of the board, the two sides of the waterproof adhesive, and the two sides of the double-sided adhesive are all on the same cutting surface.

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 plan view of a conventional straight strip design with 30 impositions.

Fig. 2 is a schematic plan view of a special-shaped dislocation design with a number of 40 impositions.

Figure 3 is a schematic plan view of a circuit board containing 40 LED conjoined light bars.

Fig. 4 is a schematic plan view of 40 LED conjoined bare light strips.

Fig. 5 is a schematic plan view of a single shaped LED light strip.

Fig. 6 is a schematic cross-sectional view of a single special-shaped LED light strip.

Fig. 7 is a schematic cross-sectional view of a waterproof single-shaped LED light strip.

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 have any limitation on the claims of the present invention.

Example

1. Design and production of special-shaped dislocation circuit board data

The width of the raw material used is 250MM, and the width of the widest part of the product is 8.0MM. The conventional traditional old design scheme is a straight strip design, and the number of impositions is 30 (shown in Figure 1). The present invention adopts a new special-shaped dislocation design. In the scheme, the widest part of each strip is 8mm, and the narrowest part is 4mm, and the number of impositions is 40 (as shown in Figure 2).

2. Production of single-sided soft board

According to the single-sided flexible board special-shaped misalignment design, the number of impositions is 40PCS design materials. The production method uses 250mm wide flexible copper clad laminates, printed circuits, etching, printed solder masks, and OSP processing solder joints to produce 40 LED connections. Body light bar circuit board 1.1 (shown in Figure 3) is spare.

3. The production of 40 LED conjoined bare strips

On the one-piece LED light strip circuit board 1.1 with multiple circuit boards, use SMT technology to paste the LED lamp beads 1.2 and the resistance 1.3 two components, and the components are soldered on the circuit board by reflow soldering to make 40 pieces. The LED conjoined bare light strip (shown in Figure 4) is spare.

4. The production of special-shaped LED light strips

4.1, a single special-shaped LED light strip

Paste a layer of double-sided tape 2.1 on the entire board containing 40 LED conjoined bare strips, and cut them into single strips with a knife die to make a single strip of special-shaped LED strips (as shown in Figure 5 and Figure 6).

4.2. Waterproof single shaped LED strip

Add a layer of transparent waterproof glue 3.1 on the side of the component containing 40 LED conjoined bare strips, level it at rest, heat curing the glue, paste a layer of double-sided tape 2.1 on the non-component side of the bare strip, use The die is divided into single strips to make a waterproof single strip of special-shaped LED light strips (shown in Figure 7).

The specific embodiments of a special-shaped LED light strip and a manufacturing method have been described in detail above in conjunction with 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 have any limitation on the scope of the present invention, especially the scope of the claims.

Claims

A method for manufacturing special-shaped LED light strips. Specifically, the light strip circuit boards are designed to be arranged in parallel, and one misplaced panel is spaced from top to bottom, odd-numbered light strip boards and even-numbered lights The strips are arranged in a staggered arrangement, each circuit board is designed to be wider at the position of welding LED or at the position of welding LED and control components, and it is designed to be narrower in all blank positions or part of the blank positions of solderless components, and it is designed for each Both sides are narrowed toward the middle. The narrower part of each is the wider part of the adjacent board. The conjoined LED light strip circuit board with multiple circuit boards designed and manufactured in this way is a combination of The positions of all undesigned soldering components or part of the undesigned soldering components of the circuit board are fully utilized and reduced, and the freed positions are used at the soldering LEDs of the two adjacent boards or at the soldering LEDs and soldering control components. Increase the number of light strip circuit boards on the same area. Use the circuit boards to paste and solder LEDs or LEDs and control components, paste double-sided tape on the back and then use a slitting machine to split strips, or apply waterproof and light-transmitting glue on the surface first. Double-sided tape is attached to the back, and then the slitting machine divides into a single special-shaped light strip. The special-shaped light strip is characterized in that the light strip is wider at the position where the LED is welded, or at the place where the LED and control components are welded. Wide, narrow at all positions without components, or narrow at some positions without components, and on the sides of the two sides in the long direction, the sides of the circuit board on the light strip and the double-sided tape on the back of the light strip The sides of the two sides are respectively on a cutting surface. The special-shaped light strip produced by this design has zero spacing between the strips, and no waste material is discharged, which improves the utilization rate of the circuit board and the double-sided tape, and significantly reduces Cost.
A special-shaped LED light strip, including:

Double-sided tape

circuit board;

LED or LED and control components;

The characteristic is that the double-sided adhesive is glued to the back of the circuit board, the LED or LED and control components are welded on the front of the circuit board, and the light strip is wider at the position where the LED is welded, or wider at the place where the LED and control element are welded. The position without components is narrow, or the position with no components is narrow, and at the narrow place, both sides of the light strip are narrowed toward the middle, and the circuit board and components on the upper surface of the light strip are exposed, or There is a layer of light-transmitting waterproof adhesive glued to the circuit board and components on the upper surface of the light strip, on the sides of the long direction of the light strip, the sides of the circuit board of the light strip and the two sides of the double-sided tape on the back of the light strip. The side surfaces of the laser beam are respectively on a cutter surface. The special-shaped light strip designed and manufactured by this design improves the utilization rate of the circuit board and the double-sided tape, and significantly reduces the cost.
A special-shaped LED light strip according to claim 1 or 2, characterized in that, when the upper surface of the light strip has a layer of waterproof glue, on both sides of the light strip in the long direction, the two sides of the circuit board The two sides, the two sides of the waterproof adhesive, and the two sides of the double-sided adhesive are all on the same cutting surface.