Glass Core Packaging Substrate With Multi-Depth Cavities
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Solution Overview
Problem
Existing packaging substrates face challenges with undulation when mounting elements of varying heights, which can affect the electrical characteristics and reliability of semiconductor devices.
Innovation Solution
A packaging substrate with a glass core and a cavity structure is developed, featuring cavity portions of different depths to accommodate elements of varying heights, along with a flat insulating layer and upper layer to ensure a flat core layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If elements of varying heights are mounted on a glass substrate, then the packaging substrate can accommodate different component designs, but undulation occurs affecting electrical characteristics
Solution Approach 1:
The patent applies local quality by creating cavity portions with different depths at specific locations on the glass substrate corresponding to the heights of mounted elements. This localized variation in cavity depth allows each element to be accommodated at its optimal height, ensuring flat upper surfaces while maintaining the ability to mount diverse components with varying heights.
2Manufacturing precision
If cavity portions of different depths are formed in the glass substrate, then undulation is alleviated and a flat upper layer can be formed, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies preliminary action by forming the cavity portions of different depths in advance, before mounting the elements. This pre-formed cavity structure prepares the glass substrate to precisely accommodate elements of varying heights, ensuring that when elements are mounted and the upper layer is formed, a flat surface is achieved without requiring complex post-processing or adjustment.
Data Source
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AI summary
An embodiment relates to a packaging substrate and a method of manufacturing the same. The packaging substrate according to the embodiment includes a core layer, wherein the core layer may include a glass substrate including a first surface and a second surface facing each other, and at least two or more cavity portions each having an opening open in a direction toward the first surface or a direction toward the second surface and having different depths. Accordingly, various types of cavity elements may be mounted without undulation.