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Six-layer wiring LCP packaging substrate, manufacturing method and multi-chip system-in-package structure

A technology for encapsulating substrates and substrates, applied in semiconductor/solid-state device manufacturing, metal pattern materials, printed circuit components, etc., to achieve the effects of good compatibility, high electromagnetic shielding, low moisture absorption and water permeability, and oxygen transmission rate

Active Publication Date: 2021-02-09
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The existing disclosed technology has not yet used LCP to realize the technical solution of packaging substrate and system-in-package structure that meets the system-in-package requirements of multi-chip, high airtightness requirements, high electromagnetic shielding, and highly reliable interconnection.

Method used

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  • Six-layer wiring LCP packaging substrate, manufacturing method and multi-chip system-in-package structure
  • Six-layer wiring LCP packaging substrate, manufacturing method and multi-chip system-in-package structure
  • Six-layer wiring LCP packaging substrate, manufacturing method and multi-chip system-in-package structure

Examples

Experimental program
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Effect test

Embodiment 1

[0078] Such as figure 1 As shown, a six-layer wiring LCP packaging substrate of this embodiment includes:

[0079] 6 layers of patterned metal circuit layers distributed from the surface to the bottom surface, followed by the first layer of patterned metal circuit layer, the second layer of patterned metal circuit layer, the third layer of patterned metal circuit layer, and the fourth layer of patterned metal circuit layer layer, the fifth layer of patterned metal circuit layer, and the sixth layer of patterned metal circuit layer; on at least one side of the outermost edge of the first layer of patterned metal circuit layer, the external secondary cascading of the LCP packaging substrate is distributed Pads or graphics for I / O soldering;

[0080] 5 insulating dielectric layers between adjacent patterned metal circuit layers; between the first patterned metal circuit layer and the second patterned metal circuit layer, the third patterned metal circuit layer and the fourth lay...

Embodiment 2

[0100] Such as image 3 As shown, this embodiment provides a method for manufacturing the six-layer wiring LCP packaging substrate 1 as described in Embodiment 1, including the following steps:

[0101] S1, such as Figure 4a As shown, blind holes are laser drilled on the second double-sided copper-clad LCP substrate 153 to form third-type blind holes 143 that penetrate and connect the third patterned metal circuit layer 113 and the fourth layer patterned metal circuit layer 114, Blind hole depth-to-diameter ratio ≤ 1;

[0102] S2, such as Figure 4b As shown, the metallization of blind holes forms the third type of blind holes 143 filled with solid electroplated copper; The electroplating copper process is realized. After hole filling electroplating, the copper plating layer on the surface is thinned to form a third type of blind hole 143 filled with solid electroplated copper;

[0103] S3, such as Figure 4c As shown, the third patterned metal circuit layer 113 and the ...

Embodiment 3

[0114] Such as Figure 5 As shown, based on the LCP packaging substrate described in Embodiment 1-2, this embodiment provides a multi-chip system-in-package structure 2, including: the LCP packaging substrate 1 as described in Embodiment 1-2, and chips 3, Metal enclosure 5 and metal cover plate 6;

[0115] The multi-chip system-in-package structure 2 is fixed on the PCB mother board by means of conductive adhesive bonding or welding, and the pads or patterns 1111 for external secondary cascading I / O welding on the LCP packaging substrate 1 are used. As the external secondary cascade I / O interface of the multi-chip system-in-package structure 2;

[0116] Metal ribs 51 are distributed in the metal surrounding frame 5; the metal surrounding frame 5 and the metal ribs 51 are welded on the upper surface of the LCP package substrate 1 and make the external secondary cascaded I / O welding pads or The figure 1111 is outside the metal frame 5, and the metal cover plate 6 is welded on ...

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Abstract

The invention discloses a six-layer wiring LCP packaging substrate, a manufacturing method and a multi-chip system-in-package structure, and the LCP packaging substrate comprises six graphical metal circuit layers which are distributed from the surface to the bottom surface, wherein at least one side of the outermost periphery of the first graphical metal circuit layer is provided with pads or patterns for external secondary cascade I / O welding of the LCP packaging substrate; five insulating dielectric layers which are positioned between the adjacent graphical metal circuit layers; a pluralityof blind grooves which are positioned in the insulating medium layer between the first graphical metal circuit layer and the second graphical metal circuit layer, wherein openings of the blind grooves face the first graphical metal circuit layer; and a plurality of blind holes which are positioned between the patterned metal circuit layer and the insulating dielectric layer. The LCP packaging substrate of the airtight packaging structure can meet the system-level packaging requirements of multiple chips, high airtight requirements, high electromagnetic shielding and high reliable interconnection.

Description

technical field [0001] The invention relates to the technical field of integrated circuits and chip packaging, in particular to a six-layer wiring LCP packaging substrate, a manufacturing method and a multi-chip system-level packaging structure, which are used for high-reliability system-level applications for high-frequency applications such as radio frequency, microwave, and millimeter wave. encapsulation. Background technique [0002] With the advancement of semiconductor and integrated circuit technology, the requirements for system integration have been further improved. The current design and manufacture of electronic circuits are moving towards smaller sizes and higher integration densities. Considerable work is carried out in the field of multi-chip packaging. In the advanced packaging form, multiple radio frequency (RF) chips, digital integrated circuit (IC) chips, micro-chip components, etc. are assembled on the packaging substrate through SIP technology, and then ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L23/538H01L23/498H01L23/552H05K1/09H01L21/48H01L21/768
CPCH01L23/49894H01L23/49838H01L23/5386H01L23/552H01L23/49816H05K1/09H01L21/4846H01L21/4853H01L21/76895
Inventor 徐诺心廖翱戴广乾边方胜谢国平潘玉华蒋瑶珮龚小林李阳阳赵鸣霄
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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