CN210179562U

CN210179562U - LED light source of three-wire flexible printed circuit board

Info

Publication number: CN210179562U
Application number: CN201921136801.5U
Authority: CN
Inventors: Lixia Tang; 唐丽霞
Original assignee: Heshan Zhongsheng Technology Co Ltd
Current assignee: Jiangmen Yamin Electronic Technology Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-03-24
Anticipated expiration: 2029-07-17

Abstract

The utility model belongs to the technical field of the LED lamps and lanterns, a LED light source of three line soft board circuits is disclosed, including the LED lamp, three line soft board circuits, resistance, plug and power strip, three line soft board circuits include the surface film or hinder the oil reservoir, high temperature resistant PET layer, hot melt adhesive layer, first copper layer, second copper layer and third copper layer set up side by side through the hot melt adhesive layer tectorial membrane at high temperature resistant PET layer upper surface, the surface film or hinder the oil reservoir laminating at first copper layer, second copper layer and third copper layer upper surface, the surface film or hinder the oil reservoir trompil of welding, expose first copper layer, second copper layer and third copper layer upper surface part and form the circuit contact. The utility model discloses a can simplify processing and practice thrift the cost.

Description

LED light source of three-wire flexible printed circuit board

Technical Field

The utility model belongs to the technical field of the LED lamps and lanterns, especially, relate to a LED light source of three line soft board circuits.

Background

At present, the circuit using the aluminum substrate/glass fiber board/FPC flexible board has the disadvantages of complex process, low production efficiency, high material and labor cost, and great environmental harm due to the fact that the circuit processing needs pickling etching, via hole electroplating and the like. The basic processing procedures of the current aluminum substrate/glass fiber board/FPC soft board circuit and light source are as follows:

pressing (pressing a copper layer on an aluminum/glass fiber substrate through insulating glue) -coating photosensitive oil (coating the photosensitive oil on the upper surface of the copper layer) -exposing the photosensitive oil (arranging a film on the upper surface of the photosensitive oil layer, exposing the photosensitive oil layer), developing, etching, removing the film, printing solder resist oil, and forming a light source by using a welding lamp bead.

Wherein the step of development is carried out using Na₂C0₃The unexposed photosensitive circuit oil is dissolved away, and the exposed photosensitive circuit oil is subjected to polymerization reaction and remains on the copper surface, so that the copper below is protected from being dissolved by the etching solution.

Wherein the etching process is ferric chloride FeCl₃Hydrochloric acid is added as an etching solution, and the copper is oxidized and reduced to remove the exposed copper.

Wherein, the film removing in the working procedure is to remove photosensitive line oil for protecting the surface of the copper line by using NaOH.

The acidic and alkaline solutions used in the above procedures are harmful to human body and environment, and the generated hazardous wastes are not easy to be recycled, so that the manufacturing cost is increased.

The LED lamp that adopts at present, as shown in fig. 1, including LED lamp chip 1, fluorescent glue 2, LED lamp area support 3, metal heat sink 4, pin 5 and solid brilliant glue 6, bulky, with high costs, and have the heat dissipation problem always.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a LED light source of three line soft board circuits can simplify processing and practice thrift the cost.

The embodiment of the utility model provides a realize like this:

an LED light source of a three-wire flexible printed circuit comprises an LED lamp, the three-wire flexible printed circuit, a resistor, a plug and a power panel, wherein the plug is electrically connected with the power panel, the power panel is electrically connected with the three-wire flexible printed circuit, the three-wire flexible printed circuit comprises a surface film or a solder resist oil layer, a high-temperature resistant PET layer, a hot melt adhesive layer, a first copper layer, a second copper layer and a third copper layer, the first copper layer, the second copper layer and the third copper layer are arranged in parallel and coated on the upper surface of the high-temperature resistant PET layer through the hot melt adhesive layer, the distance between the second copper layer and the third copper layer is 0.1-0.2 mm, the second copper layer is punched and cut into a plurality of sections of independent copper layers, the third copper layer is punched and cut into a plurality of sections of independent copper layers, the punching position of the second copper layer is staggered with the punching position of the third copper layer, the surface film or the solder resist oil layer is, the surface film or the solder resist layer is provided with an opening, the upper surface parts of the first copper layer, the second copper layer and the third copper layer are exposed to form a circuit contact, wherein, one end of the first copper layer is provided with a negative electrode contact of the power panel, the other end is provided with a first contact of the resistor, one end of the second copper layer is provided with a second contact of the resistor, the first contact point and the second contact point are in corresponding positions, the other end of the second copper layer is provided with a power panel anode contact point, two ends of the same section of independent copper layer of the second copper layer are respectively provided with an LED lamp contact point, two ends of the same section of independent copper layer of the third copper layer are respectively provided with an LED lamp contact point, two ends of the resistor are connected to the first contact point and the second contact point, the LED lamp is only composed of an LED lamp chip and fluorescent glue, the LED lamp chip is embedded in the fluorescent glue, and the LED lamp is connected with the corresponding LED lamp contact points of the second copper layer and the third copper layer in a bridging manner.

The embodiment of the utility model provides a form three line soft board circuits through mainly adopting the roll extrusion mode for technology environmental protection, with low costs remove LED lamp support and metal heat sink structure, make LED lamp radiating effect better, the performance of light source is more excellent.

Drawings

FIG. 1 is a prior art LED lamp construction;

FIG. 2 is a diagram of the structure of the LED lamp of the present invention;

FIG. 3 is a process diagram of the method of manufacturing the three wire flexible printed circuit board of the present invention;

FIG. 4 is a diagram of a three-wire flexible printed circuit board of the present invention;

fig. 5 is a schematic diagram of a light source structure including a three-wire flexible printed circuit according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description is given to specific implementations of the present invention with reference to specific embodiments:

a method of manufacturing a three wire flexible printed circuit, comprising:

by adopting an FDC forming machine, the copper foil, the hot melt adhesive and the high-temperature film are laminated together, so that the copper layer is laminated on the high-temperature resistant PET layer through the hot melt adhesive layer;

punching the circuit layer by using an automatic punching machine to form a first copper layer, a second copper layer and a third copper layer which are arranged in parallel, wherein the distance between the second copper layer and the third copper layer is 0.1-0.2 mm, the second copper layer is punched into a plurality of sections of independent copper layers, the third copper layer is punched into a plurality of sections of independent copper layers, and the punching position of the second copper layer and the punching position of the third copper layer are arranged in a staggered manner;

attaching a surface layer film or a solder resist oil layer to the upper surfaces of the first copper layer, the second copper layer and the third copper layer;

the surface film or the solder resist oil layer is subjected to hole opening treatment, the upper surface parts of a first copper layer, a second copper layer and a third copper layer are exposed to form circuit contacts, wherein one end of the first copper layer is provided with a power panel negative electrode contact, the other end of the first copper layer is provided with a first resistor contact, one end of the second copper layer is provided with a second resistor contact, the positions of the first contact and the second contact are corresponding, the other end of the second copper layer is provided with a power panel positive electrode contact, two ends of the same section of independent copper layer of the second copper layer are respectively provided with an LED lamp contact, and two ends of the same section of independent copper layer of the third copper layer are respectively provided with an LED lamp contact.

An LED light source comprises an LED lamp, three line soft board circuits obtained according to the method, a resistor, a plug and a power panel, wherein the plug is electrically connected with the power panel, the power panel is electrically connected with the three line soft board circuits, two ends of the resistor are connected to a first contact and a second contact, the LED lamp only comprises an LED lamp chip and fluorescent glue, the LED lamp chip is embedded in the fluorescent glue, and the LED lamp is connected with the LED lamp contacts corresponding to a second copper layer and a third copper layer in a cross-over mode.

As shown in fig. 3, the present invention adopts a novel Flexible circuit board (FDC circuit Flexible Die cutting circuit) to replace the conventional aluminum substrate/glass fiber board/FPC Flexible board. The utility model discloses a soft board circuit comprises high temperature resistant insulating film + circuit layer + high temperature resistant insulating film (also can use insulating solder mask oil to replace), and whole light source technology forms as follows:

laminating a copper layer 7, a hot melt adhesive layer 8 and a high temperature resistant PET layer 9, rolling and engraving a circuit, then laminating a surface layer film or printing a solder resist oil layer 10, welding an LED lamp 11 to form a light source, specifically, adopting an FDC (fully drawn copper) laminating machine to laminate a copper foil and a high temperature thin film together, adopting an automatic punching machine to form a semi-finished product of a circuit, and enabling the blank size between a second copper layer and a third copper layer to be 0.1-0.2 mm; the surface film is perforated by a rolling die (the exposed circuit position is used for welding elements such as an LED lamp, a resistor and the like), and solder resist oil can be directly printed in the process; and then laminating the surface film with the opening and the rolled line through a heating roller.

After the above-mentioned method, the semi-finished product and the finished product shown in fig. 4 and 5 are obtained, the three-wire flexible printed circuit board comprises a surface film or solder resist layer 10, a high temperature resistant PET layer 9, a hot melt adhesive layer 8, a first copper layer 12, a second copper layer 13 and a third copper layer 19, the first copper layer 12, the second copper layer 13 and the third copper layer 19 are arranged in parallel and coated on the upper surface of the high temperature resistant PET layer 9 through the hot melt adhesive layer 8, the second copper layer 13 is punched into a plurality of sections of independent copper layers, the third copper layer 19 is punched into a plurality of sections of independent copper layers, the punching position of the second copper layer 13 is staggered with the punching position of the third copper layer 19, the surface film or solder resist layer 10 is attached to the upper surfaces of the first copper layer 12, the second copper layer 13 and the third copper layer 19, the surface film or solder resist layer 10 is provided with an opening to expose the upper surfaces of the first copper layer 12, the second copper layer 13 and, one end of the first copper layer 12 is provided with a power panel negative electrode contact 14, the other end of the first copper layer is provided with a first contact 16 of a resistor 18, one end of the second copper layer 13 is provided with a second contact 16 of the resistor 18, the positions of the first contact and the second contact correspond, the other end of the second copper layer 13 is provided with a power panel positive electrode contact 15, two ends of the same section of independent copper layer of the second copper layer 13 are respectively provided with an LED lamp contact 17, and two ends of the same section of independent copper layer of the third copper layer 19 are respectively provided with an LED lamp contact 17.

The LED lamp 11 is connected with the corresponding LED lamp contact 17 of the second copper layer 13 and the third copper layer 19 in a bridging manner, the plug is connected with the power panel, and the power panel is connected with the power panel negative electrode contact 14 and the power panel positive electrode contact 15 of the three-wire flexible printed circuit board to form an LED light source.

Fig. 2 is the utility model discloses LED's block diagram, LED lamp only comprise LED lamp chip 1 and fluorescent glue 2, and LED lamp chip gomphosis is in the fluorescent glue.

The utility model discloses a LED lamp removes LED lamp support, and the volume is less, and the cost is lower, and heat dispersion is better, because of the LED lamp is littleer, so the dimensional requirement to the circuit clearance when the welding is littleer, the utility model discloses a technology environmental protection, with low costs, and LED lamp radiating effect is better, and the performance is more excellent.

In the embodiment of the utility model, the chemical formula of the polyethylene glycol terephthalate is-OCH 2-CH2OCOC6H4 CO-English name: polyethylene terephthalate, abbreviated as PET.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a LED light source of three line soft board circuits which characterized in that: the LED lamp comprises an LED lamp, a three-line soft board circuit, a resistor, a plug and a power board, wherein the plug is electrically connected with the power board, the power board is electrically connected with the three-line soft board circuit, the three-line soft board circuit comprises a surface layer film or a solder resisting oil layer, a high-temperature resistant PET layer, a hot melt adhesive layer, a first copper layer, a second copper layer and a third copper layer, the first copper layer, the second copper layer and the third copper layer are arranged in parallel and coated on the upper surface of the high-temperature resistant PET layer through a hot melt adhesive layer, the distance between the second copper layer and the third copper layer is 0.1-0.2 mm, the second copper layer is punched and cut into a plurality of sections of independent copper layers, the third copper layer is punched and cut into a plurality of sections of independent copper layers, the punching and cutting position of the second copper layer is staggered with the punching and cutting position of the third copper layer, the surface layer film or the oil layer is adhered on, the LED lamp is characterized in that upper surface parts of a first copper layer, a second copper layer and a third copper layer are exposed to form circuit contacts, wherein one end of the first copper layer is provided with a power panel negative electrode contact, the other end of the first copper layer is provided with a first resistor contact, one end of the second copper layer is provided with a second resistor contact, the first contact corresponds to the second contact in position, the other end of the second copper layer is provided with a power panel positive electrode contact, two ends of the same section of independent copper layer of the second copper layer are respectively provided with an LED lamp contact, two ends of the same section of independent copper layer of the third copper layer are respectively provided with an LED lamp contact, two ends of the resistor are connected to the first contact and the second contact, the LED lamp only comprises an LED lamp chip and fluorescent glue, the LED lamp chip is embedded in the fluorescent glue, and the LED lamp is connected to the LED lamp contacts corresponding to the second copper layer.