CN207603987U

CN207603987U - A kind of pcb board with blind slot

Info

Publication number: CN207603987U
Application number: CN201721716183.2U
Authority: CN
Inventors: 陈裕斌; 江涛; 余东良; 江善华
Original assignee: Shenzhen Hui He Precision Circuit Co Ltd
Current assignee: Shenzhen Hui He Precision Circuit Co Ltd
Priority date: 2017-12-11
Filing date: 2017-12-11
Publication date: 2018-07-10
Anticipated expiration: 2027-12-11

Abstract

The utility model discloses a kind of pcb boards with blind slot, are related to technical field of PCB board；Including the first copper foil layer, the first PP layers, the first core layer, the 2nd PP layers, the second core layer, the 3rd PP layers and the second copper foil layer；Described first PP layers be arranged between the first copper foil layer and the first core layer, the 2nd PP layers be arranged between the first core layer and the second core layer, the described 3rd PP layers be arranged between the second core layer and the second copper foil layer；First copper foil layer, the first PP layers, the first core layer, be provided with a blind slot in the 2nd PP layers and the second core layer, and be provided through on the bottom surface of blind slot in the through-hole of the 3rd PP layers and the second copper foil layer, by blind slot and through-hole by the electric connection of the pad of PCBA devices and the second copper foil layer；The beneficial effects of the utility model are：PCBA devices can be directly set in the welding of the second copper foil layer and upper tin, PCBA devices more firm stable in pcb board, reduce the loss of signal and the output of electric current.

Description

A kind of pcb board with blind slot

Technical field

The utility model is related to technical field of PCB board, more specifically, the utility model is related to a kind of with blind slot Pcb board.

Background technology

PCB（Printed Circuit Board, printed circuit board）Electronic unit is important, is the branch of electronic component Support body is the supplier of electronic component connection.Since it is using terahertz wave quasi-optics making, therefore it is referred to as " print Brush " circuit board.Before printed circuit board appearance, the interconnection between electronic component is directly connected to and has formed by electric wire Whole circuit.PCBA is the abbreviation of English Printed Circuit Board+Assembly, that is to say, that PCB hollow plates pass through SMT piece uploadings, using the entire processing procedure of DIP plug-in units, in brief, PCBA board is exactly welded, assembles electronic component Pcb board.

In the prior art, in welding electronic component on pcb board, since electronic component is directly welded at most surface On copper foil, then electrically conducting between multiple copper foil layers realized by conductive through hole, this mode can cause electronic component to weld It connects built on the sand, the loss of synchronous signal is excessive.

Utility model content

For overcome the deficiencies in the prior art, the utility model provides a kind of pcb board with blind slot, should be with blind slot The copper foil layer of electronic component and internal layer is directly realized that welding and upper tin, electronic component are more firmly set in PCB by pcb board It is interior.

Technical solution is used by the utility model solves its technical problem：A kind of pcb board with blind slot improves Part is：Including the first copper foil layer, the first PP layers, the first core layer, the 2nd PP layers, the second core layer, the 3rd PP layers and Second copper foil layer；

Described first PP layers be arranged between the first copper foil layer and the first core layer, the described 2nd PP layers be arranged on Between one core layer and the second core layer, the described 3rd PP layers be arranged between the second core layer and the second copper foil layer；

First copper foil layer, the first PP layers, the first core layer, be provided with one in the 2nd PP layers and the second core layer Blind slot, and being provided through on the bottom surface of blind slot in the through-hole of the 3rd PP layers and the second copper foil layer, by the blind slot and logical The pad of PCBA devices and second copper foil layer is electrically connected by hole.

In such a configuration, the pcb board with blind slot further includes the first solder mask and the second solder mask, described The first solder mask be coated on the upper surface of first copper foil layer, second solder mask is coated on second bronze medal The lower surface of layers of foil.

In such a configuration, first solder mask and the second solder mask green ink, black ink, reddish oil Ink, blue ink, white ink or Yellow ink；Circuit is mutual when first solder mask and the second solder mask are for preventing welding Interference.

In such a configuration, first copper foil layer and the second copper foil layer are routing layer or shielded layer, the first copper foil It is used to weld PCBA devices on layer and the second copper foil layer.

In such a configuration, the described first PP layers, the 2nd PP layers and the 3rd PP layers of main material be asphalt mixtures modified by epoxy resin Fat and glass fabric, for avoiding interfering with each other between the first copper foil layer and the second copper foil layer.

The beneficial effects of the utility model are：It is provided through on the bottom surface of blind slot in the 3rd PP layers and the second copper foil layer The pad of PCBA devices and the second copper foil layer is electrically connected by through-hole by blind slot and through-hole；Pass through this structure, PCBA devices It can be directly set in pcb board with the welding of the second copper foil layer and upper tin, PCBA devices more firm stable, reduce the damage of signal The output of consumption and electric current.

Description of the drawings

Fig. 1 is a kind of schematic cross-section of pcb board with blind slot of the utility model.

Specific embodiment

The utility model is further illustrated with reference to the accompanying drawings and examples.

The technique effect of the design of the utility model, concrete structure and generation is carried out below with reference to embodiment and attached drawing It clearly and completely describes, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment It is the part of the embodiment rather than whole embodiments of the utility model, the embodiment based on the utility model, the skill of this field The other embodiment that art personnel are obtained without creative efforts belongs to the model of the utility model protection It encloses.In addition, all connection/connection relations arrived involved in patent, not singly refer to component and directly connect, and refer to can be according to specific Performance, by adding or reducing couple auxiliary, to form more preferably coupling structure.Each skill in the utility model creation Art feature, can be with combination of interactions under the premise of not conflicting conflict.

With reference to shown in Fig. 1, the utility model discloses a kind of pcb board with blind slot, specifically, including the first copper foil layer 101st, the first PP layers 102, the first core layer 103, the 2nd PP layers 104, the second core layer 105, the 3rd PP layers 106 and the second bronze medal Layers of foil 107；First copper foil layer 101 and the second copper foil layer 107 are routing layer or shielded layer, the first copper foil layer 101 and the For welding PCBA devices on two copper foil layers 107, while also have the function of to shield electromagnetic radiation, reduce loss of signal output, It avoids polluting and causing human injury.The first PP layers 102 are arranged on the first copper foil layer 101 and the first core layer 103 Between, the 2nd PP layers 104 are arranged between the first core layer 103 and the second core layer 105, the described 3rd PP layers 106 are arranged between the second core layer 105 and the second copper foil layer 107；First copper foil layer 101, the first PP layers 102, A blind slot 20 is provided with, and set on the bottom surface of blind slot 20 in one core layer 103, the 2nd PP layers 104 and the second core layer 105 Have across in the through-hole 201 of the 3rd PP layers 106 and the second copper foil layer 107, by the blind slot 20 and through-hole 201 by PCBA devices The pad of part and second copper foil layer 107 is electrically connected；By this structure, PCBA devices can directly with the second copper foil 107 welding of layer and upper tin, PCBA devices more firm stable are set in pcb board, reduce the loss of signal and the output of electric current.

Further, the pcb board with blind slot further includes the first solder mask 108 and the second solder mask 109, described The first solder mask 108 be coated on the upper surface of first copper foil layer 101, second solder mask 109 is coated on institute The lower surface of the second copper foil layer 107 stated；In the present embodiment, 109 green of first solder mask 108 and the second solder mask Ink, black ink, red ink, blue ink, white ink or Yellow ink；First solder mask 108 and the second welding resistance Circuit interferes with each other or upper tin when layer 109 is for preventing welding, caused by heterogeneous networks short circuit, while also have and prevent first There is oxidation, corrosion in 101 and second copper foil layer 107 of copper foil layer.In the present embodiment, the first resistance is also equipped on the bottom surface of blind slot 20 Layer 108.

In the above-described embodiment, the main material of the first PP layers 102, the 2nd PP layers 104 and the 3rd PP layers 106 Matter be epoxy resin and glass fabric, for avoid interfering with each other between the first copper foil layer 101 and the second copper foil layer 107 and Conducting, convenient for being combined well between the first copper foil layer 101 and the second copper foil layer 107, welding resistance and insulation.

It is the preferable of the utility model to be implemented to be illustrated, but the utility model creation is not limited to institute above Embodiment is stated, those skilled in the art can also make various be equal without departing from the spirit of the present invention Deformation is replaced, these equivalent deformations or replacement are all contained in the application claim limited range.

Claims

1. a kind of pcb board with blind slot, it is characterised in that：Including the first copper foil layer, the first PP layers, the first core layer, second PP layers, the second core layer, the 3rd PP layers and the second copper foil layer；

Described first PP layers be arranged between the first copper foil layer and the first core layer, the described 2nd PP layers be arranged on the first core Between plate layer and the second core layer, the described 3rd PP layers be arranged between the second core layer and the second copper foil layer；

First copper foil layer, the first PP layers, the first core layer, to be provided with one in the 2nd PP layers and the second core layer blind Slot, and be provided through on the bottom surface of blind slot in the through-hole of the 3rd PP layers and the second copper foil layer, pass through the blind slot and through-hole The pad of PCBA devices and second copper foil layer is electrically connected.

2. a kind of pcb board with blind slot according to claim 1, it is characterised in that：The pcb board with blind slot The first solder mask and the second solder mask are further included, first solder mask is coated on the upper surface of first copper foil layer, Second solder mask is coated on the lower surface of second copper foil layer.

3. a kind of pcb board with blind slot according to claim 2, it is characterised in that：First solder mask and Two solder mask green inks, black ink, red ink, blue ink, white ink or Yellow ink；First solder mask and Circuit interferes with each other when second solder mask is for preventing welding.

4. a kind of pcb board with blind slot according to claim 1, it is characterised in that：First copper foil layer and Two copper foil layers are routing layer or shielded layer, are used to weld PCBA devices on the first copper foil layer and the second copper foil layer.

5. a kind of pcb board with blind slot according to claim 1, it is characterised in that：First PP layers, the 2nd PP Layer and the 3rd PP layer material be epoxy resin and glass fabric, for avoiding between the first copper foil layer and the second copper foil layer Interfere with each other.