Segmented Display Driver Layout for Lower-Power SoC Displays
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Solution Overview
Problem
Semiconductor devices with improved performance through SoC integration face a trade-off between performance enhancement, power consumption, and size reduction, along with increased heat generation.
Innovation Solution
A novel electronic device structure incorporating a logic circuit portion, display control portion, and display portion with overlapping driver circuit portions and pixel circuits, utilizing Si and OS transistors in stacked element layers, and a backup circuit to manage power consumption and heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If SoC integration is adopted to improve performance, then processing speed and data handling capability are enhanced, but power consumption and heat generation increase
Solution Approach 1:
The display control portion is divided into multiple driver circuit portions, each independently controlling a specific display region. This segmentation allows the arithmetic device to selectively activate only the driver circuit portions corresponding to regions where image data is updated, rather than maintaining all driver circuits in a continuous operation state. Consequently, power consumption is reduced while maintaining high processing speed for updated regions.
Solution Approach 2:
The system transitions driver circuit portions between operation states and stop states based on whether image data is updated in their corresponding display regions. This periodic activation strategy ensures that driver circuits operate at full speed when needed (maintaining processing performance) while entering low-power states when no updates are required (reducing overall power consumption).
2Speed
If SoC integration is adopted to improve performance, then processing capability is enhanced, but heat generation increases
Solution Approach 1:
By segmenting the display control into multiple independent driver circuit portions, the system can localize heat generation to only those portions currently in operation. When driver circuit portions are in the stop state, they generate minimal heat, thereby reducing overall thermal load while maintaining high processing capability in active regions.
Solution Approach 2:
The system converts the potential harm of continuous heat generation into a benefit by strategically allowing heat generation only in active driver circuit portions that are processing image data updates. This selective thermal management approach maintains processing performance where needed while minimizing overall heat generation across the device.
Data Source
AI summary
An electronic device with a novel structure is provided. In the electronic device including a semiconductor device, the semiconductor device includes a logic circuit portion provided in a plurality of element layers, a display control portion, and a display portion. The display portion includes a plurality of display regions. The display control portion includes a plurality of driver circuit portions. The plurality of display regions each include a pixel circuit that controls light emission of a light-emitting device. The plurality of driver circuit portions each include a driver circuit that controls the pixel circuit. The plurality of display regions are each provided at a position overlapping with a region where any one of the plurality of driver circuit portions is provided. The logic circuit portion includes an arithmetic device. The arithmetic device has a function of controlling, in accordance with whether or not image data is updated in each of the plurality of display regions, an operation state or a stop state of the driver circuit corresponding to the pixel circuit included in the display region.