CN205584611U

CN205584611U - PCB's inner -layer core plate

Info

Publication number: CN205584611U
Application number: CN201620151634.1U
Authority: CN
Inventors: 欧阳�; 严东华; 戴勇; 杨长峰
Original assignee: Jiangmen Suntak Circuit Technology Co Ltd
Current assignee: Jiangmen Suntak Circuit Technology Co Ltd
Priority date: 2016-02-29
Filing date: 2016-02-29
Publication date: 2016-09-14
Anticipated expiration: 2026-02-28

Abstract

The utility model relates to a circuit board production technical field specifically is a PCB's inner -layer core plate. The utility model discloses an exhaust duct that the design comprises criss -cross first passageway and second channel owing to including two passageways among every exhaust duct, can show and improve exhaust efficiency, makes the discharge of fumes and gas increase to prior art's twice to the reduction board appears exploding in the process of back risk, simultaneously because first passageway is cross -distribution with the second channel, and first passageway is different with the atress direction of the gummosis of second channel, thus increase a passageway among the exhaust duct can not the volume of increasing the gummosis, the event can not cause the thick uneven problem of board. Establish the base of first passageway and the contained angle of inner -layer core plate's flange into 45, first passageway and second channel mutually perpendicular, just the gao junshe of first passageway and second channel is 3mm, and discharge of fumes and gas and the gummosis volume that can make every exhaust duct are at a best within range.

Description

A kind of core material of PCB

Technical field

This utility model relates to board production technical field, particularly relates to the core material of a kind of PCB.

Background technology

PCB (Printed Circuit Board), Chinese is printed circuit board, also known as printed substrate, is important electronic unit, is the supporter of electronic devices and components, is the carrier of electronic devices and components electrical connection.The technological process of production of PCB is as follows: sawing sheet → inner figure → internal layer etching (formation core material) → internal layer AOI → brown → pressing → boring → heavy copper → electric plating of whole board → outer graphics → graphic plating → etching → outer layer AOI → silk-screen welding resistance, character → surface process → molding → electrical testing → FQC → packaging.Owing to the gas between needing flaggy in pressing working procedure is discharged, a number of discharge duct therefore need to be made in the edges of boards region of core material when inner figure and internal layer etch.In prior art, edges of boards region every on discharge duct be a prescription to identical parallelogram (without copper), as shown in Figure 1 (11 is internal layer circuit region, and 12 is edges of boards regions, and 13 is discharge duct).Existing discharge duct is single because of discharge directions, and part producing plate still has the problem that aerofluxus is the most smooth in bonding processes, causes causing plate bursting in rear operation.If increasing the quantity of discharge duct in edges of boards region in order to strengthen capacity, then gummosis amount in pressing working procedure can be caused excessive, thus the problem causing thickness of slab inequality.

Utility model content

This utility model yet suffers from, for the discharge duct on the core material of existing PCB, the problem that aerofluxus is the most smooth in pressing working procedure, it is provided that a kind of exhaust situation when improving pressing and will not increase the core material of PCB of gummosis amount.

For achieving the above object, this utility model is by the following technical solutions.

A kind of core material of PCB, including internal layer circuit region and edges of boards region, described edges of boards region is centered around the periphery in internal layer circuit region, make on described internal layer circuit region and have internal layer circuit, make on described edges of boards region and have some discharge ducts, each described discharge duct includes that first passage and second channel, described first passage intersect with second channel.

Preferably, described first passage and second channel are parallelogram.

Preferably, described first passage is symmetrical with second channel.

Preferably, the base of described first passage is 45 ° with the angle of the edges of boards of core material, and first passage is mutually perpendicular to second channel, and the height of first passage and second channel is 3mm.

Compared with prior art, the beneficial effects of the utility model are: the discharge duct that this utility model is made up of the first passage intersected and second channel design, owing to each discharge duct includes two passages, it is remarkably improved exhaust efficiency, make capacity increase to the twice of prior art, thus reduce the risk that plate bursting occurs in rear operation；Simultaneously because first passage and second channel are cross-distribution, first passage is different with the Impact direction of the gummosis of second channel, therefore increases a passage in discharge duct and will not increase gummosis amount, therefore does not results in the problem that thickness of slab is uneven.The angle on the base of first passage Yu the edges of boards of core material is set to 45 °, and first passage is mutually perpendicular to second channel, and the height of first passage and second channel is all set to 3mm, can make the capacity of each discharge duct and gummosis amount in an optimal scope.

Accompanying drawing explanation

Fig. 1 be prior art core material in the structural representation of discharge duct；

Fig. 2 be embodiment core material in the structural representation of discharge duct.

Detailed description of the invention

In order to understand technology contents of the present utility model more fully, below in conjunction with specific embodiment the technical solution of the utility model it is described further and illustrates.

Embodiment

With reference to Fig. 2, the present embodiment provides the core material of a kind of PCB, and core material is made up of internal layer circuit region 21 and edges of boards region 22, and internal layer circuit region 21 is positioned at the centre of plate, and edges of boards region 22 is then centered around the periphery in internal layer circuit region 21.Making on internal layer circuit region 21 and have internal layer circuit, making on edges of boards region 22 has some discharge ducts 23.

Each discharge duct 23 includes first passage 231 and second channel 232, and first passage 231 and second channel 232 are equivalently-sized parallelogram, a height of 3mm of parallelogram, the base of parallelogram is 45 ° with the angle of the edges of boards of core material, base length is then determined by the edges of boards width of core material, in addition first passage 231 and second channel 232 are also mutually perpendicular to intersect, and are symmetric.

Owing to each discharge duct 23 of the present embodiment includes two passages, it is remarkably improved exhaust efficiency, makes capacity increase to the twice of prior art, thus reduce the risk that plate bursting occurs in rear operation；Simultaneously because first passage 231 and second channel 232 are in cross-distribution, first passage 231 is different with the Impact direction of the gummosis of second channel 232, therefore increases a passage in discharge duct 23 and will not increase gummosis amount, therefore does not results in the problem that thickness of slab is uneven.The angle on the base of first passage Yu the edges of boards of core material is set to 45 °, and first passage is mutually perpendicular to second channel, and the height of first passage and second channel is all set to 3mm, can make the capacity of each discharge duct and gummosis amount in an optimal scope.

In other embodiments, first passage 231 and second channel 232 can use parallelogram or other the shape of other size, as long as both do not increase gummosis amount while to be cross-distribution just can increase capacity.

The above only further illustrates technology contents of the present utility model with embodiment; so that reader is easier to understand; but not representing embodiment of the present utility model and be only limitted to this, any technology done according to this utility model extends or recreation, all by protection of the present utility model.

Claims

1. the core material of a PCB, including internal layer circuit region and edges of boards region, described edges of boards region is centered around the periphery in internal layer circuit region, make on described internal layer circuit region and have internal layer circuit, make on described edges of boards region and have some discharge ducts, it is characterized in that: each described discharge duct includes that first passage and second channel, described first passage intersect with second channel.

A kind of core material of PCB, it is characterised in that: described first passage and second channel are parallelogram.

A kind of core material of PCB, it is characterised in that: described first passage is symmetrical with second channel.

A kind of core material of PCB, it is characterised in that: the base of described first passage is 45 ° with the angle of the edges of boards of core material, and first passage is mutually perpendicular to second channel, and the height of first passage and second channel is 3mm.