Multi-Substrate Light-Emitting Circuit Layout for Lower IR Drop
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Solution Overview
Problem
Current electronic devices face challenges in reducing costs, increasing energy conversion efficiency, simplifying wiring design, and minimizing damage during transportation.
Innovation Solution
The electronic device comprises multiple light-emitting units, a driving circuit, and a controlling circuit, each disposed on different substrates, allowing for the selection of materials based on requirements and facilitating integration and flexibility, with driving transistors having higher electron mobility to reduce IR drop and controlling transistors optimized for cost and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If light-emitting units, driving circuit, and controlling circuit are integrated on the same substrate, then device complexity is reduced, but energy conversion efficiency decreases and wiring design becomes complicated
Solution Approach 1:
The patent divides the electronic device into separate substrates: a first substrate for light-emitting units and a second substrate for driving and controlling circuits. This segmentation allows optimization of each substrate for its specific function, improving energy conversion efficiency while maintaining manageable device complexity through modular architecture.
Solution Approach 2:
The patent transitions from a planar integration approach to a three-dimensional stacked configuration with multiple substrates arranged in different layers. This dimensional change enables improved heat dissipation, reduced wiring complexity, and enhanced energy conversion efficiency while maintaining compact form factor.
2Ease of manufacture
If all components are integrated on the same substrate, then manufacturing process is simplified, but damage during transportation increases
Solution Approach 1:
By segmenting the device into separate substrates (first substrate for light-emitting units, second substrate for circuits), the patent reduces the overall footprint and mass of each individual substrate. This segmentation makes the components more resistant to transportation damage while maintaining manufacturing simplicity through standardized substrate processing techniques.
3Use of energy by moving object
If driving transistors with higher electron mobility are used, then IR drop is reduced and energy efficiency improves, but device complexity and cost increase
Solution Approach 1:
The patent applies different material qualities to different locations: high-electron-mobility materials are used specifically in the driving transistors where high current handling is critical, while other components use standard materials. This localized optimization reduces IR drop and improves energy efficiency without unnecessarily increasing overall device complexity.
Solution Approach 2:
The patent changes the electron mobility parameter of the driving transistor materials to optimize performance. By adjusting this physical parameter in the critical driving region, the patent achieves reduced IR drop and improved energy conversion efficiency while managing device complexity through targeted parameter optimization rather than universal complexity increase.
Data Source
AI summary
An electronic device including a plurality of light-emitting units, a driving circuit, and a controlling circuit is provided. The driving circuit is configured to drive at least one of the light-emitting units. The controlling circuit is configured to control the driving circuit. The plurality of light-emitting units, the driving circuit, and the controlling circuit are respectively disposed on different substrate.