Manufacturing method and PCB of groove bottom pattern stepped groove

A manufacturing method and technology of stepped grooves, which are applied in multilayer circuit manufacturing, printed circuit manufacturing, printed circuit and other directions, can solve the problems of complex process, many structural design restrictions, and difficult manufacturing, so as to reduce the difficulty of operation and improve work efficiency. , The effect of the simple process
CN109041459BActive Publication Date: 2020-01-17DONGGUAN SHENGYI ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DONGGUAN SHENGYI ELECTRONICS
Publication Date
2020-01-17

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Abstract

The embodiment of the invention discloses a method for manufacturing a step groove of a groove bottom pattern and a PCB. The method comprises the following steps: providing a core board and a prepreg;Removing copper from the core plate placed in the bottom layer in the laminating process in the area where the bottom of the step groove is to be formed, and filling the area after removing copper with conductive adhesive material; Laminating the core plate and the prepreg sheet to form a multilayer plate, and manufacturing a step groove; Laser ablation is carried out on the non-groove bottom pattern area of the conductive adhesive material at the bottom of the step groove to produce the groove bottom pattern. Compared with the prior art, the invention has no design limitation, the process method is simpler, no special equipment or special process is needed, the operation difficulty is reduced, the work efficiency is improved, and the invention is suitable for mass production.
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Description

technical field

[0001] Embodiments of the present invention relate to the technical field of printed circuit boards, in particular to a method for manufacturing a stepped groove with a groove bottom pattern and a PCB. Background technique

[0002] With the advancement of science and technology, electronic products have become indispensable daily necessities in people's lives, and PCB (Printed Circuit Board, printed circuit board) is an important part of electronic products. In recent years, people have more and more functional requirements for electronic products. The more it is, the higher the requirements are for the PCB.

[0003] Due to its special structure and electrical properties, stepped grooves are widely used in three-dimensional three-dimensional assembly, reducing the assembly volume of electrical equipment, and special electrical properties. At present, there are various manufacturing methods for stepped groove circuit boards, but for The method of making the g...

Claims

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