CN214901432U

CN214901432U - Double-sided aluminum-based circuit board

Info

Publication number: CN214901432U
Application number: CN202121275371.2U
Authority: CN
Inventors: 侯裂国; 周林展
Original assignee: Dongguan Haiwo Electronic Technology Co ltd
Current assignee: Dongguan Haiwo Electronic Technology Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-11-26
Anticipated expiration: 2031-06-08

Abstract

The utility model discloses a two-sided aluminium base circuit board, including aluminum plate, insulating layer, copper sheet, solder mask and pad, a plurality of insulated holes and a plurality of conducting hole have been seted up to aluminum plate's inside, just the conducting hole is close to in the insulated hole, insulating layer, copper sheet and solder mask all are provided with two-layerly, two-layerly the insulating layer laminates respectively and is fixed in aluminum plate's upper and lower surface department, two-layerly the copper sheet laminates respectively and is fixed in one side department that two-layer insulating layer kept away from each other, a plurality of grooves that run through have all been seted up in insulating layer and copper sheet department, the pad is provided with a plurality ofly, and is a plurality of the pad is located the inside groove department that runs through of insulating layer and copper sheet respectively, the pore wall department of conducting hole is through copper facing and two-layer copper sheet intercommunication, conducting hole department is through insulating processing. The utility model discloses promoted circuit board whole heat dispersion greatly, and can not produce high temperature and make the white oil blacken, improved LED lamp pearl life, reduced the light decay, the practicality is higher.

Description

Double-sided aluminum-based circuit board

Technical Field

The utility model relates to a circuit board field specifically is a two-sided aluminium base circuit board.

Background

The circuit board is also called as a circuit board, the circuit board enables the circuit to be miniaturized and visualized, plays an important role in the batch production of fixed circuits and the optimization of the layout of electric appliances, and can be called as a printed circuit board or a printed circuit board, the types of the circuit boards are many, one of the LED double-sided circuit board is one of the circuit boards, the traditional double-sided LED circuit board generally consists of front solder resist white oil, front copper foil, glass fiber cloth, back copper foil and back solder resist white oil, as shown in figure 2, an insulating layer is arranged in the middle, the upper layer copper foil and the lower layer copper foil are communicated in a via hole copper plating mode, and the double-sided circuit board is simple in structure and poor in heat dissipation performance, and the white oil is blackened under high temperature to influence the light reflectivity.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two-sided aluminium base circuit board to solve its simple structure of traditional two-sided LED circuit board, heat dispersion is poor, and high temperature makes the white oil blacken, influences the problem of light reflectivity.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a two-sided aluminium base circuit board, includes aluminum plate, insulating layer, copper sheet, solder mask and pad, a plurality of insulated holes and a plurality of conducting hole have been seted up to aluminum plate's inside, just the conducting hole is close to in the insulated hole, insulating layer, copper sheet and solder mask all are provided with two-layerly, two-layerly the insulating layer laminates respectively and is fixed in aluminum plate's upper and lower surface department, two-layerly the copper sheet laminates respectively and is fixed in one side department that two-layer insulating layer kept away from each other, insulating layer and copper sheet department have all seted up a plurality of grooves that run through, the pad is provided with a plurality ofly, and is a plurality of the pad is located the inside groove department that runs through of insulating layer and copper sheet respectively.

Preferably, the hole wall of the via hole is communicated with the two copper layers through copper plating.

Preferably, the via hole is subjected to an insulation treatment.

Preferably, a single pad is located between two adjacent vias.

The utility model provides a two-sided aluminium base circuit board possesses following beneficial effect:

the utility model discloses cross to be provided with aluminum plate, the insulating layer, the copper layer, solder mask and pad for the circuit board hinders by the front and welds white oil + copper foil layer + insulating layer + aluminum plate + insulating layer + copper foil layer + the back and hinders and welds the white oil and constitute, and the conducting hole is insulating processing earlier, copper plating the conducting hole pore wall again, with lower floor's copper foil intercommunication, thereby make because of middle metal aluminum plate that has adopted, promote heat dispersion greatly, can not produce high temperature and make white oil blacken, LED lamp pearl life has been improved, the light decay has been reduced, and the practicality is higher.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of a conventional circuit board structure of the present invention;

fig. 3 is an enlarged schematic view of a point a in fig. 1.

In the figure: 1. an aluminum plate; 2. an insulating layer; 3. a copper skin layer; 4. a solder mask layer; 5. a pad; 6. an insulating hole; 7. and a via hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-3, the utility model provides a technical scheme: the utility model provides a two-sided aluminium base circuit board, includes aluminum plate 1, insulating layer 2, copper layer 3, solder mask layer 4 and pad 5, a plurality of dead eyes 6 and a plurality of conducting hole 7 have been seted up to aluminum plate 1's inside, just conducting hole 7 is close to in dead eye 6, insulating layer 2, copper layer 3 and solder mask layer 4 all are provided with two-layerly, two-layerly the laminating is fixed in aluminum plate 1's upper and lower surface department respectively for insulating layer 2, two-layerly copper layer 3 laminates respectively and is fixed in two-layer insulating layer 2 one side department of keeping away from each other, a plurality of through groove has all been seted up in insulating layer 2 and copper layer 3 department, pad 5 is provided with a plurality ofly, and is a plurality of pad 5 is located insulating layer 2 and the inside groove department that runs through of copper layer 3 respectively.

The hole wall of the via hole 7 is communicated with the two copper layers 3 through copper plating treatment, so that the two copper layers 3 can be indirectly connected, and better heat dissipation treatment is facilitated;

the conducting hole 7 is subjected to insulation treatment, so that the conducting hole 7 has good insulation performance;

the single bonding pad 5 is positioned between two adjacent via holes 7, so that the subsequent uniform heat dissipation work is facilitated.

The theory of operation, when the circuit board carried out the during operation, because metal aluminum plate 1 has been adopted in the middle of the circuit board, and the pore wall department of through-hole is handled and is communicated with two-layer copper layer 3 through the copper facing for can connect indirectly between two-layer copper layer 3, so that better scattered heat treatment promotes heat dispersion greatly, can not produce high temperature and make white oil blacken, has improved LED lamp pearl life, has reduced the light decay, and the practicality is higher.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, can be connected inside two elements or can be in an interaction relationship between the two elements, and unless otherwise specifically limited, the specific meaning of the terms in the present invention can be understood by those skilled in the art according to specific situations

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two-sided aluminium base circuit board, includes aluminum plate (1), insulating layer (2), copper skin (3), anti-welding layer (4) and pad (5), its characterized in that: a plurality of insulated holes (6) and a plurality of conducting hole (7) have been seted up to the inside of aluminum plate (1), just conducting hole (7) are close to in insulated hole (6), insulating layer (2), copper skin (3) and weld preventing layer (4) all are provided with two-layerly, two-layerly insulating layer (2) laminate respectively and are fixed in aluminum plate's (1) upper and lower surface department, two-layerly copper skin (3) laminate respectively and are fixed in one side department that two-layer insulating layer (2) kept away from each other, insulating layer (2) and copper skin (3) department have all seted up a plurality of grooves that run through, pad (5) are provided with a plurality ofly, and are a plurality of pad (5) are located the inside groove department that runs through of insulating layer (2) and copper skin (3) respectively.

2. The double-sided aluminum-based circuit board of claim 1, wherein: and the hole wall of the via hole (7) is communicated with the two copper layers (3) through copper plating treatment.

3. The double-sided aluminum-based circuit board of claim 1, wherein: the through hole (7) is subjected to insulation treatment.

4. The double-sided aluminum-based circuit board of claim 1, wherein: the single pad (5) is positioned between two adjacent via holes (7).