Stacked Printed Circuit Boards for Compact Component Integration
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Solution Overview
Problem
The increasing demand for high integration and compactness in electronic devices, such as smartphones and tablets, leads to a challenge in managing the limited space available for printed circuit boards and electrical components, which can increase manufacturing costs when using high-specification boards.
Innovation Solution
A dual-layered printed circuit board structure is implemented, with a first board stacked on a second board, allowing for the integration of both high- and low-specification components while optimizing space and reducing overall manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the size of the printed circuit board is increased to mount various electrical components, then the component integration capability is improved, but the device compactness deteriorates
Solution Approach 1:
The patent transitions from a single-plane circuit board layout to a three-dimensional stacked configuration with multiple circuit boards arranged in vertical layers. This dimensional change allows components to be distributed across multiple levels, increasing integration capacity without expanding the device's footprint, thereby resolving the contradiction between component quantity and device area.
Solution Approach 2:
The patent implements a nested structure where multiple circuit boards are stacked and interconnected vertically, with each board containing electrical components. This nesting approach enables high-density component integration by utilizing vertical space efficiently, allowing the system to accommodate more components within the same horizontal area, thus improving component integration without compromising device compactness.
2Quantity of substance
If a high-specification printed circuit board is used to integrate more components, then the component integration capability is improved, but the manufacturing cost increases
Solution Approach 1:
The patent divides the circuit board system into multiple separate boards stacked in layers, where each board can be manufactured independently using standard manufacturing processes. This segmentation allows the use of cost-effective, conventional manufacturing techniques for each individual board rather than requiring expensive high-specification single-board manufacturing, thereby reducing overall manufacturing cost while achieving high component integration through the stacked architecture.
Solution Approach 2:
The patent combines multiple standard-specification circuit boards into a stacked assembly that functions as an integrated high-capacity system. By merging several conventional boards with standard manufacturing capabilities into a unified stacked structure, the system achieves the component integration capability of a high-specification board while maintaining lower manufacturing costs through the use of standard manufacturing processes for each individual board.
3Quantity of substance
If multiple printed circuit boards are stacked to increase component capacity, then the component integration capability is improved, but the device complexity increases
Solution Approach 1:
The patent designs the stacked circuit board system with universal interconnection interfaces and standardized connection methods that enable multiple boards to be integrated through common protocols. This universality allows the system to manage multiple boards with standardized processes, reducing operational and maintenance complexity despite the increased component integration capacity, thereby resolving the contradiction between component quantity and device complexity.
Data Source
AI summary
An electronic device may include a housing, a first printed circuit board being disposed in the housing and including a receiving space formed in at least a portion thereof, and a second printed circuit board being stacked (directly or indirectly) on at least a partial area of the first printed circuit board, the second printed circuit board including a first surface including a plurality of pads configured to be electrically connected with the first printed circuit board and a second surface facing in a direction opposite to the first surface. Other various embodiments are possible.


