Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for filling through-holes of printed circuit board (PCB) with solder mask ink for double-sided opening

A printed circuit board, green oil technology, applied in the direction of electrical connection formation of printed components, etc., can solve problems such as insufficient plug holes, cat's eyes, green oil bridge peeling, etc., to achieve the effect of ensuring quality and improving quality

Active Publication Date: 2014-07-30
SHENZHEN KINWONG ELECTRONICS
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 1. Problems such as white light transmission and cat's eye caused by insufficient plug holes
[0010] 2. Green oil bridge peeling problem caused by green oil residue or over-development at the window opening position
[0011] 3. Difficult exposure alignment leads to residue of green oil window opening position

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for filling through-holes of printed circuit board (PCB) with solder mask ink for double-sided opening
  • Method for filling through-holes of printed circuit board (PCB) with solder mask ink for double-sided opening
  • Method for filling through-holes of printed circuit board (PCB) with solder mask ink for double-sided opening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the green oil plugging method for opening windows on both sides of the printed circuit board provided by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] The green oil plugging method of the double-sided window opening of the printed circuit board provided by the present invention mainly includes the following steps:

[0043] Pre-process (graphic etching) → pre-processing → plug hole → first pre-baking → first development → curing → pre-processing → printing ink → second pre-baking → exposure → second development → baking plate → post-process ( surface treatment)

[0044] The method of the present invention ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for filling through-holes of a printed circuit board (PCB) with a solder mask ink for double-sided opening. The method comprises the following steps: the first pretreatment step; through-hole filling step; the first pre-baking step; the first development step; the step for curing the PCB after the first development; the second pretreatment step for printing the solder mask ink on the cured PCB; the second pre-baking step for the PCB after the second pretreatment step; and the exposure step for the PCB after the second pre-baking step. The method provided by the invention can be meet the requirement for through-hole filling by adding the steps of pretreatment, through-hole filling, pre-baking, development, curing and so on, and can satisfy the requirement for solder mask ink of the PCB according to the normal printing procedure. In addition, the method solves the problems of cat eye or light transmission caused by incomplete hole filling, and also obviates the conflict with the subsequent surface ink printing process, thereby ensuring the quality of surface ink printing process.

Description

technical field [0001] The invention relates to the technical field of printed circuit boards, in particular to a green oil plugging method for opening windows on both sides of a printed circuit board. Background technique [0002] The green oil plug hole refers to filling the through hole of the printed circuit board with green oil (or solder resist ink). [0003] In the prior art, the common green oil plugging process of the double-sided window opening of the circuit board is as follows: [0004] The first type: pre-process (graphic etching) → pre-treatment → printing ink → pre-baking → exposure → development → (UV) → baking plate → post-process (surface treatment). [0005] The first method is to make plug holes while printing green oil. Therefore, it is difficult to ensure that the holes are filled with green oil or meet the thickness of the green oil on the surface, that is, it is easy to appear that the hole is filled with white light (or cat's eye) or surface oil. T...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05K3/40
Inventor 陈晓宇陈华东
Owner SHENZHEN KINWONG ELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com