Carbon oil pcb board and manufacturing method thereof

Abstract

The invention is suitable for the field of PCB manufacturing, and provides a carbon ink PCB manufacturing method and a carbon ink PCB manufactured according to the method. The method comprises the following steps that carbon ink concocting is preformed: carbon ink is fully stirred until the required viscosity is achieved; material cutting is performed: solder resist is solidified on a PCB substrate, and a carbon ink pattern to be printed is manufactured and then installed on a screen printer; plate manufacturing is performed: a screen plate is manufactured and then installed on the screen printer; pre-regulation is performed: a screen interval and scraper stroke are regulated; alignment regulation is performed: the relative position of the screen plate is regulated so that the pattern area on the screen plate is enabled to be aligned with the carbon ink pattern to be printed on the PCB; ink printing is performed: carbon ink is printed on the PCB in a scrapping way by using the scraper; and baking is performed; carbon ink on the PCB is enabled to be dried and solidified so that a carbon film conductive layer is manufactured. Compared with methods in the prior art, thickness of the carbon film manufactured on the PCB substrate by using the carbon ink PCB manufacturing method is uniform, carbon film resistance can be greatly controlled and carbon ink PCB yield rate is higher.

Description

technical field [0001] The invention belongs to the field of PCB board manufacture, and in particular relates to a method for manufacturing a carbon oil PCB board and a carbon oil PCB board manufactured according to the method. Background technique [0002] Carbon oil PCB board (printed circuit board) refers to the use of carbon conductive ink (referred to as carbon ink) coated on the PCB board substrate, after curing to form a PCB board with a carbon film conductive pattern. The production cost of PCB boards is required to drop again and again. It is the general trend to use carbon oil keys to replace the current expensive gold keys. Carbon oil keys have strong wear resistance and can withstand repeated operations. opening effect. [0003] At present, carbon ink is mainly printed on the PCB substrate by screen printing (also known as silk screen printing), but due to the high electrical performance requirements of the carbon film, there are also certain requirements for it...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a carbon oil PCB board manufacturing method, which aims to solve the problem that the carbon film thickness is difficult to accurately control in carbon ink silk screen printing, and the thickness is uneven, which makes it difficult to control the resistance of the carbon film.

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