Foldable Display Image Compensation via Bend and View Sensors
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Solution Overview
Problem
Foldable and flexible display devices experience image distortion when deformed, leading to compromised display quality due to changes in viewing angles and folding states.
Innovation Solution
A display device system that includes a control unit, bend-measuring unit, viewpoint-monitoring unit, and storing unit, which calculates and compensates image data based on folding and viewing angles using sensors and compensation tables to maintain image quality similar to a flat display, even when the device is bent or folded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the display device is made foldable or flexible to achieve thin and lightweight properties, then the device portability and design versatility are improved, but image distortion occurs when the display is deformed
Solution Approach 1:
The system performs preliminary actions by measuring the folding angle and viewing angle in advance, calculating the required image compensation data before display, and preparing correction algorithms proactively to prevent image distortion from occurring in the first place
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring the folding angle through bend-measuring units and viewing angle through viewpoint-monitoring units, then using this real-time data to dynamically adjust and compensate image data, ensuring image quality is maintained despite display deformation
2Manufacturing precision
If image compensation is performed based on folding angle and viewing angle to maintain image quality, then display quality is improved, but device complexity increases due to additional sensors and control units
Solution Approach 1:
The control unit serves multiple functions: it controls the display panel, processes image data, calculates compensation algorithms, and coordinates with various sensing units. This multi-functionality reduces the need for separate dedicated components for each function, thereby managing system complexity while achieving image quality improvement
3Ease of operation
If real-time image compensation is performed to compensate for distortion at different viewing angles, then viewing experience is improved, but processing time and computational load increase
Solution Approach 1:
The system performs preliminary calculations by pre-computing compensation data based on measured folding and viewing angles, preparing correction algorithms in advance before the actual display update is needed, thereby reducing real-time processing delays
Solution Approach 2:
The system dynamically adjusts compensation parameters based on real-time measurements of folding angle and viewing angle, optimizing the balance between processing speed and image quality by adapting the compensation intensity to the current display state rather than applying fixed compensation
Data Source
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AI summary
A display device includes a display unit which displays an image in a bent state and including a plurality of display surfaces divided from each other by a bending position thereof, a bend-measuring unit including a sensor which measures a bending value of the display unit, a viewpoint-monitoring unit including a sensor which measures a viewing position of a viewer, where the viewing point-monitoring unit outputs position information based on the viewing position of the viewer, a control unit which compensates image data to be displayed on each of the display surfaces, based on the bending value and the position information, and a driving unit which drives the display unit using the compensated image data.