Foldable Semiconductor Device Power Management
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Solution Overview
Problem
Portable semiconductor devices face challenges in reducing power consumption, which limits their continuous operating time and portability due to high power usage.
Innovation Solution
A semiconductor device with a foldable movable portion that selectively stops operation in certain regions, utilizing a control portion to manage scan line driver circuits and switches to conserve power by only activating necessary regions when folded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the semiconductor device operates all regions continuously, then the display function is maintained, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the operation state of display regions changeable based on device configuration. The control portion dynamically adjusts which regions are operated or stopped according to whether the device is folded or unfolded, allowing the system to adapt its power consumption characteristics to different usage states
Solution Approach 2:
The display portion is divided into multiple independent regions (first region and second region) that can be controlled separately. This segmentation allows the control portion to selectively stop operation in specific regions when the device is folded, reducing overall power consumption while maintaining display functionality in visible regions
2Ease of operation
If the semiconductor device is folded to improve portability, then the device size is reduced, but power consumption increases due to continuous operation of all regions
Solution Approach 1:
The system dynamically adjusts power consumption based on the folded state. When the device is folded for portability, the control portion detects this state and selectively stops operation in regions that are not visible or needed, allowing the device to maintain low power consumption even in the folded portable configuration
Solution Approach 2:
Different regions of the display portion are assigned different operational states based on their visibility and necessity in the folded configuration. The control portion applies local quality control by stopping operation in non-visible regions while maintaining operation in visible regions, optimizing power consumption for the folded portable state
Data Source
AI summary
A low-power semiconductor device is provided. The semiconductor device includes a movable portion, a plurality of scan line driver circuits, and a control portion. The movable portion includes a plurality of regions driven by the plurality of scan line driver circuits. One of the scan line driver circuits is electrically connected to another one of the scan line driver circuits adjacent to the scan line driver circuit through a switch. The control portion has a function of supplying a start pulse to one scan line driver circuit selected from the plurality of scan line driver circuits. The movable portion can be folded between the plurality of regions.