Flexible Display Curvature Detection and Region Segmentation
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Solution Overview
Problem
Flexible display devices face challenges in efficiently managing display areas when bent or folded, as existing technologies struggle to dynamically adjust power consumption and image display based on the curvature, leading to inefficiencies in energy use and image quality.
Innovation Solution
A flexible display device with a touch sensor system that detects curved portions and divides the display area into active and inactive regions based on touch information, using a panel driver to selectively activate data lines and gate lines, optimizing power usage and image display accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the entire display area is activated when the device is bent or folded, then the image display coverage is maintained, but the power consumption increases significantly
Solution Approach 1:
The display area is segmented into multiple regions based on curvature detection. The screen is divided into a first region (with curvature exceeding threshold) and a second region (without significant curvature). Only the second region is activated for normal display operation, while the first region is deactivated or operated in a low-power mode. This segmentation allows the system to maintain adequate display coverage in the flat region while avoiding the high power consumption that would result from activating the entire display area including the curved portion.
2Use of energy by moving object
If the display area is reduced when bent or folded, then the power consumption is reduced, but the image display coverage is compromised
Solution Approach 1:
The system dynamically adjusts the active display area based on real-time curvature detection. When the device is bent or folded, the curvature sensor detects the deformation and the system automatically adjusts which regions are active. This dynamic adaptation allows the display area to be reduced only when necessary (in curved regions) while maintaining full coverage in flat regions, optimizing the balance between power consumption and display coverage based on the actual device state.
3Adaptability or versatility
If touch sensors are driven in the entire display area, then the touch detection coverage is maintained, but the power consumption and processing load increase
Solution Approach 1:
Different operational modes are applied to different regions of the display based on curvature characteristics. In the first region (curved area), touch sensor driving is stopped or operated in a simplified mode, while in the second region (flat area), full touch detection functionality is maintained. This local differentiation allows the system to maintain adequate touch detection coverage in the usable flat region while reducing the processing load and power consumption by eliminating or simplifying touch sensor operations in the curved region where touch interaction is less effective or unnecessary.
Data Source
AI summary
A flexible display device includes a bendable touch display panel, a touch detector, a screen divider, and a panel driver. The touch display panel includes at least one touch sensor. The touch detector detects a curved portion of the touch display panel and touch information corresponding to a touch applied to the touch display panel based on a sensing result from the at least one touch sensor. The screen divider divides a display area of the touch display panel into a plurality of divided areas with respect to the curved portion, and defines the divided areas as a display divided area and a non-display divided area, respectively, based on the touch information. The panel driver activates at least a portion of the display divided area and deactivate the non-display divided area.