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One-time synchronous resin hole plugging method for double-sided back drilling plate

A technology of resin plugging and back drilling, which is applied to the formation of electrical connections of printed components, electrical components, printed circuits, etc., can solve the problems of resin plugging bubbles, hole depressions, and plug holes that are not full, so as to ensure that the plug holes quality, inhibiting ink drop, avoiding the effect of plug hole not full and orifice sinking

Pending Publication Date: 2021-06-18
MEIZHOU ZHIHAO ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a one-time synchronous resin plugging method for double-sided back-drilling boards, which can solve quality problems such as resin plugging bubbles, hole depressions, and unfulfilled plugging holes, and improve the quality of resin plugging holes for double-sided back-drilling boards , improve the production efficiency of double-sided back-drilled boards

Method used

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  • One-time synchronous resin hole plugging method for double-sided back drilling plate
  • One-time synchronous resin hole plugging method for double-sided back drilling plate

Examples

Experimental program
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Effect test

Embodiment 1

[0037] see figure 2 As shown, this embodiment provides a one-time synchronous resin plugging method for a double-sided back-drilled board, including the following steps:

[0038] S1. Drill a through hole on the production board with a diameter of 0.20mm, and metallize the through hole. Drill the reverse back drill hole 121 and the front back drill hole 122 through the back drill, and the back drill hole and the back drill part have an aperture diameter of 0.40mm;

[0039] S2. After applying dry film, exposing and developing, a concentric dry film ring 132 is formed on the periphery of the back-drilled hole on one side of the production board. The diameter of the outer ring is 0.60 mm, and the diameter of the inner ring is 0.15 mm. The dry film is produced stop production board;

[0040] S3. Set up the plug hole screen 11, the dry film blocking point production board, the backing plate 14, and the plug hole platform 15 sequentially from top to bottom, and use a plug hole mach...

Embodiment 2

[0051] see figure 2 As shown, this embodiment provides a one-time synchronous resin plugging method for a double-sided back-drilled board, including the following steps:

[0052] S1. Drill through holes on the production board with a diameter of 0.25 mm, and metallize the through holes. The production board is double-sided back-drilled to form back-drilled holes 121 on the back side and back-drilled holes 122 on the front side. The back-drilled part of the back-drilled hole has a diameter of 0.45 mm. mm;

[0053] S2. After applying dry film, exposing and developing, a concentric dry film ring 132 is formed on the periphery of the back-drilled hole on one side of the production board. The diameter of the outer ring is 0.60 mm, and the diameter of the inner ring is 0.20 mm. The dry film is produced stop production board;

[0054] S3. Set up the plug hole screen 11, the dry film blocking point production board, the backing plate 14 and the plug hole platform 15 sequentially fr...

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Abstract

The invention discloses a one-time synchronous resin hole plugging method for a double-sided back drilling plate, which comprises the following steps of: manufacturing a concentric circle dry film ring at the periphery of a back drilling hole on a back drilling surface of a double-sided back drilling production plate, sequentially arranging a hole plugging screen plate, a production plate, a base plate and a hole plugging platform from top to bottom, and plugging resin ink into the back drilling surface without a dry film. The dry film ring can solve the problem that holes are formed in the corners of back drilling holes, meanwhile, when a plate is taken out, ink can be restrained from falling off, the phenomena that plugged holes are not full and hole openings are sunken are avoided, and the product quality is improved; in addition, one-time synchronous resin hole plugging of multiple types of holes such as large holes, small holes and double-sided back drilling holes can be achieved by adjusting and controlling the windowing hole diameter of the hole plugging aluminum sheet or the resin sheet, and the production efficiency is improved on the premise that the hole plugging quality is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of printed circuit board production, in particular to a one-time synchronous resin plugging method for a double-sided back-drilled board. Background technique [0002] As printed circuit boards are becoming more and more high-speed and high-density, the process design of back-drilled resin plug holes has emerged as the times require. This design drills out the excess copper in some through holes on the board, and then plugs them Resin is applied, and copper may be plated on the non-back-drilled side to make holes in the plate. This design has three advantages for the client: back-drilling reduces high-speed signal loss; the plug hole protects the copper layer in the hole from corrosion, Long-term reliability is good; after resin filling, copper can be plated on the non-back drilling surface to make soldering pads, increasing the density of soldering devices. [0003] Common resin plugging processes include ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/42
CPCH05K3/42H05K2201/0959
Inventor 刘根蔡志浩
Owner MEIZHOU ZHIHAO ELECTRONICS TECH
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