Laminated Battery and IC Integration on Carrier
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Solution Overview
Problem
Existing RFID tags and MEMS devices face challenges in achieving a compact layout for integrating batteries and integrated circuits, with previous designs often being bulky and inefficient in using space on a carrier substrate.
Innovation Solution
A laminated battery structure is provided on a carrier with an integrated circuit located within an opening, where both electrode layers extend to connect with the IC, allowing for a compact construction and optional flip-chip arrangement, using materials like PET, PEEK, or Polyimide foil for the carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the IC chip is located on the top side of the substrate and the cell/battery is provided on the opposite side with vias through the substrate, then electrical connections are established, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges the battery and IC layout onto the same substrate surface, eliminating the need for vias through the substrate. The battery is positioned around the IC on the same plane, with direct trace connections, simplifying the overall device structure while maintaining electrical connectivity.
Solution Approach 2:
The patent transitions from a three-dimensional stacked arrangement (IC on one side, battery on the other) to a two-dimensional planar arrangement (both IC and battery on the same surface). This dimensional change eliminates the need for vertical vias and simplifies the manufacturing process.
2Ease of manufacture
If the battery and IC are placed separately on the substrate, then manufacturing is simplified, but the device occupies more area and becomes less compact
Solution Approach 1:
The patent positions the IC within a cavity or recess formed in the battery structure, allowing the battery to surround the IC. This nested arrangement maximizes space utilization, making the device compact while maintaining separate functional zones for the battery and IC.
3Area of stationary object
If sensors are embedded within the battery structure, then space is saved, but sensors requiring environmental access cannot function properly
Solution Approach 1:
The patent creates a cavity within the battery structure that houses the IC and sensors. This nested design allows sensors to access the environment through the open top of the cavity while remaining protected by the surrounding battery structure, achieving both compactness and environmental accessibility.
Data Source
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AI summary
Apparatus comprising a carrier, a laminated battery provided on a major surface of the carrier, and an integrated circuit. The laminated battery includes a bottom electrode layer, an electrolyte layer, and a top electrode layer. The integrated circuit is connected to the bottom electrode layer and the top electrode layer. The integrated circuit is surrounded by the laminated battery on the major surface of the carrier.