A packaging module and its forming method

Abstract

The embodiment of the invention discloses a packaging module and a formation method thereof. The method comprises the steps that a first conductive substrate and a second conductive substrate are fixed by using a first fixing layer so as to form a stacked structure; a first through hole is formed in the position corresponding to the first preset area of the second conductive substrate, and a second through hole is formed in the position corresponding to the second preset area; a third through hole is formed in the position corresponding to the first preset area of the first conductive substrate; the part between the first through hole and the third through hole of the first fixing layer is removed so that a first chamber is formed, and the part of the first fixing layer arranged in the second through hole is removed; and a first chip is fixed in the first chamber and a second chip is fixed in the second through hole so that different thickness of chips are installed through the first chamber and the second through hole which have different depth and the problem that the present packaging module does not support embedding of multiple different thickness of chips can be solved. The upper and lower parts of the packaging module are enabled to be balanced by the formation method so that the phenomenon of warping can be avoided.

Description

technical field [0001] The present application relates to the field of packaging technology, in particular to a packaging module and a forming method thereof. Background technique [0002] With the development of electronic products, the volume of packaging modules is getting smaller and higher, and the integration level is getting higher and higher. Therefore, the technology of embedding chips into substrates and realizing interconnection is developing more and more rapidly. However, in the current process of simultaneously embedding multiple chips into a packaging module, since there may be different height differences between the multiple chips, there are various blind holes of different depths in the packaging module. When the thickness of the above-mentioned chip is relatively large (for example, greater than 80 μm), there is a process capability limit and it is impossible to realize the filling operation of copper plating in the blind hole. Therefore, the current packa...

AI Technical Summary

Problems solved by technology

However, in the current process of simultaneously embedding multiple chips into a packaging module, since there may be different height differences between the multiple chips, there are various blind holes of different depths in the packaging module. When the thickness of the chip mentioned above is relatively large (such as greater than 80 μm), there is a process capability limit and it is impossible to realize the filling operation of copper plating in the blind hole. Therefore, the current packaging module does not support the embedding of multiple chips of different thicknesses.

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