Microelectronic Device Recessed in Support Cavity
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Solution Overview
Problem
The existing methods for packaging microelectronic devices require the use of a removable adhesive layer to temporarily secure the die to the circuit board, which increases production time and cost due to the need for attaching and detaching the adhesive layer.
Innovation Solution
A microelectronic device package with a support member having a cavity with a conductive layer at the closed end, eliminating the need for a removable adhesive layer and allowing direct electrical connections, and enabling the encapsulation of the device without temporary support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a removable adhesive layer is used to temporarily secure the die to the circuit board, then the die can be supported during manufacturing, but the production time and cost increase due to attaching and detaching the adhesive layer
Solution Approach 1:
The invention extracts and eliminates the removable adhesive layer from the manufacturing process. Instead of using a temporary adhesive that must be attached and detached, the die is directly mounted to the circuit board using a permanent adhesive layer, removing the unnecessary step of using and removing a temporary support mechanism.
Solution Approach 2:
The adhesive layer serves dual functions: it permanently secures the die to the circuit board and provides the necessary support during manufacturing. This eliminates the need for a separate removable adhesive layer, allowing the system to support itself during the manufacturing process without requiring additional temporary components.
2Ease of manufacture
If a removable adhesive layer is used to temporarily secure the die, then the die can be positioned in the cavity, but the overall flow time required to produce the package increases
Solution Approach 1:
The invention removes the removable adhesive layer entirely from the process. The die is positioned and secured in a single step using a permanent adhesive, eliminating the time-consuming sequence of attaching and detaching temporary adhesive layers while maintaining the ability to position the die accurately in the cavity.
Solution Approach 2:
The permanent adhesive layer is applied in advance and remains in place throughout the manufacturing process, providing continuous support and positioning for the die. This preliminary action eliminates the need for subsequent removal steps, reducing the overall production cycle time.
Data Source
AI summary
Packaged microelectronic devices recessed in support member cavities, and associated methods, are disclosed. Method in accordance with one embodiment includes positioning a microelectronic device in a cavity of a support member, with the cavity having a closed end with a conductive layer, and an opening through which the cavity is assessable. The microelectronic device can have bond sites, a first surface, and a second surface facing opposite from the first surface. The microelectronic device can be positioned in the cavity so that the second surface faces toward and is carried by the conductive layer. The method can further include electrically coupling the bond sites of the microelectronic device to the conductive layer. In particular embodiments, the microelectronic device can be encapsulated in the cavity without the need for a releasable tape layer to temporarily support the microelectronic device.