Flexible Display Region Power Control via Folding Detection
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Solution Overview
Problem
Flexible display devices face challenges in reducing power consumption, especially when regions of the display are not visible, leading to inefficiencies in energy usage.
Innovation Solution
A flexible display device with a display panel divided into visible and non-visible regions, utilizing a driving controller to generate switching signals that control the provision of driving voltage to pixels in visible regions while turning off non-visible regions, and incorporating a light detection system to deactivate signals when the device is folded or bent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display device operates with all regions always powered on, then the display is always visible and functional, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the display regions dynamically switchable between visible and non-visible states. The driving controller dynamically adjusts the power supply to different display regions based on real-time visibility requirements, allowing the system to adapt its power consumption profile to actual operational needs rather than maintaining a static powered-on state for all regions.
Solution Approach 2:
The display panel is segmented into multiple independently controllable regions (first display region and second display region). Each region can be selectively powered on or off through separate switching circuits controlled by the driving controller, allowing individual regions to be deactivated when not visible, thereby reducing overall power consumption while maintaining functionality of visible regions.
2Adaptability or versatility
If the display device is folded or bent, then portability is improved, but non-visible regions continue to consume power unnecessarily
Solution Approach 1:
The system employs feedback mechanisms where the driving controller monitors the operational state of the display device (whether it is folded or bent) and adjusts the power supply accordingly. When folding or bending is detected or commanded, the controller receives feedback about the display configuration and responds by deactivating power to regions that become non-visible, thereby preventing energy waste while maintaining portability benefits.
Solution Approach 2:
The patent applies preliminary action by proactively deactivating power to display regions before they become non-visible during folding or bending operations. The driving controller anticipates which regions will be obscured by the folding action and pre-empts power cutoff to those regions, preventing unnecessary energy consumption from regions that will not be displayed anyway.
Data Source
AI summary
A display device includes a display panel including a first display region having first pixels connected to first data lines and scan lines and a second display region having second pixels connected to second data lines and the scan lines, a voltage generator configured to generate a first driving voltage, a driving controller configured to output a first switching signal and a second switching signal, and a switching circuit configured to provide the first driving voltage to the first pixels in response to the first switching signal and provide the first driving voltage to the second pixels in response to the second switching signal, wherein the driving controller determines whether each of the first display region and the second display region is a visible region or a non-visible region, and outputs the first switching signal and the second switching signal corresponding to a determination result.