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Manufacture method of ceramic-based interconnection flexible circuit board

A flexible circuit board and interconnection flexibility technology, which is applied in the manufacturing field of ceramic-based interconnected flexible circuit boards, can solve the problems of single circuit board advantages, poor thermal conductivity and heat dissipation, and difficulty in improving reliability, and achieve excellent 3D connection. Characteristics, good thermal conductivity, the effect of solving high temperature resistance

Inactive Publication Date: 2011-03-23
广东达进电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ordinary epoxy resin multilayer board: has a series of advantages such as many layers, high wiring density, mature technology, and easy welding of components, but its thermal conductivity and heat dissipation are poor, the expansion and contraction size is difficult to control, and the reliability is also difficult to improve;
[0004] Flexible circuit board (soft board): small in size, light in weight, movable, curved, twisted surface will not damage the wire, can comply with different shapes and special package sizes, 3D assembly and a wide range of dynamic applications; the weakness lies in dimensional stability Extremely poor performance, low wiring density, not resistant to high temperature, and not easy to make multilayer boards
[0005] Ordinary alumina ceramic circuit board: it has the advantages of high heat dissipation and corrosion resistance, high insulation performance and excellent high-frequency characteristics, low expansion coefficient, stable chemical performance and high thermal conductivity, and non-toxic; but because of its It has the characteristics of high hardness, so it is brittle and difficult to machine. At the same time, because of its flat surface, it is difficult to achieve interlayer conduction through electroplating and it is difficult to effectively combine with other layers to form a multilayer circuit board;
[0006] Traditional circuit boards have single advantages and cannot have high thermal conductivity, high integration and 3D connection functions at the same time, and cannot meet the market's demand for circuit boards with high connectivity, high density, and good thermal conductivity.

Method used

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  • Manufacture method of ceramic-based interconnection flexible circuit board
  • Manufacture method of ceramic-based interconnection flexible circuit board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for manufacturing a ceramic-based interconnected flexible circuit board of the present invention comprises the following steps:

[0046] A. Making aluminum nitride ceramic circuit boards

[0047] a1. Make the inner layer graphics on the pretreated aluminum nitride ceramic copper clad laminate;

[0048] It mainly includes: incoming material inspection → degreasingpicklingdrying → film pressing → exposure → development → etching → film removal → drying and other processes;

[0049] The specific method is: clean the surface of the aluminum nitride ceramic copper clad substrate that has passed the inspection, use sodium persulfate to micro-etch the copper clad layer of the aluminum nitride ceramic copper clad substrate, and remove the oil and surface on the copper clad layer. Compared with cleaning the circuit board substrate by physical methods, it is more effective in preventing damage to the aluminum nitride ceramic copper-clad substrate. The micro-etched...

Embodiment 2

[0097] A method for manufacturing a ceramic-based interconnected flexible circuit board of the present invention comprises the following steps:

[0098] A. Making aluminum nitride ceramic circuit boards

[0099] a1. Make the inner layer graphics on the pretreated aluminum nitride ceramic copper clad laminate;

[0100] It mainly includes: incoming material inspection → degreasingpickling → drying → film pressing → exposure → development → etching → film removal → drying and other processes;

[0101] The specific method is: clean the surface of the aluminum nitride ceramic copper clad substrate that has passed the inspection, use ammonium persulfate to micro-etch the copper clad layer of the aluminum nitride ceramic copper clad substrate, and remove the oil and surface on the copper clad layer. Compared with cleaning the circuit board substrate by physical methods, it is more effective in preventing damage to the aluminum nitride ceramic copper-clad substrate. The micro-etch...

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PUM

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Abstract

The invention discloses a manufacture method of a ceramic-based interconnection flexible circuit board, which is characterized by comprising the following steps of: A, manufacturing an aluminum nitride ceramic circuit board; B, manufacturing a flexible circuit board; C, laminating the aluminum nitride ceramic circuit board and the flexible circuit board; D, manufacturing a through hole penetrating the upper surface and the lower surface of a multilayer board in the step C on the multilayer boardby adopting a laser punching device, penetrating the through hole by adopting a conductive material and then drying to ensure that the through hole becomes a conducting hole; E, printing welding-preventing ink on the place of the multilayer board where no electric component is welded; F, silk-screening characters on the preset place of the multilayer board; and G, cutting the circuit boards into preset specifications by adopting a laser cutting device to obtain the ceramic-based rigid flexible multilayer circuit board. The invention aims at overcoming the defects in the prior art, and provides the manufacture method of the ceramic-based interconnection flexible circuit board with excellent 3D connection characteristic and better thermal conductivity.

Description

technical field [0001] The invention relates to a method for manufacturing a ceramic-based interconnected flexible circuit board. Background technique [0002] At present, there are ordinary epoxy resin multilayer boards in the industry, there are flexible circuit boards (soft boards), rigid-flexible circuit boards with epoxy resin + flexible circuit boards, and ordinary Al 2 o 3 As the main component of ceramic circuit boards, their advantages and disadvantages are as follows: [0003] Ordinary epoxy resin multilayer board: has a series of advantages such as many layers, high wiring density, mature technology, and easy welding of components, but its thermal conductivity and heat dissipation are poor, the expansion and contraction size is difficult to control, and the reliability is also difficult to improve; [0004] Flexible circuit board (soft board): small in size, light in weight, movable, curved, twisted surface will not damage the wires, can follow different shapes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/46
Inventor 王斌陈华巍盛从学姚超谢兴龙杨晓乐
Owner 广东达进电子科技有限公司
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