Flexible Display Boundary Detection via Capacitance Sensing
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Solution Overview
Problem
Existing display devices with flexible panels that fold or expand face challenges in distinguishing between exposed and concealed areas, leading to inefficient image display and increased power consumption as images are often displayed in non-exposed regions.
Innovation Solution
A display device with a touch module that includes a boundary determining member to sense capacitance differences between exposed and non-exposed areas, allowing the display range to be adjusted based on calculated exposure boundaries, ensuring images are only displayed in the exposed active area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display touch module is configured to fold or expand to provide a large screen, then the screen size is increased, but it becomes difficult to distinguish between exposed and concealed areas leading to inefficient image display
Solution Approach 1:
The display touch module is designed to be flexible and configurable between folded and expanded states. The system dynamically adjusts the display range based on the current configuration state, using boundary determination through capacitance sensing to identify exposed versus concealed areas, ensuring images are displayed only in visible regions regardless of the module's physical state
Solution Approach 2:
The system employs a boundary determining member that senses capacitance values to detect the exposure boundary between exposed and concealed areas. This feedback mechanism allows the system to automatically adjust the display range based on real-time detection of the display touch module's configuration state, preventing inefficient image display in concealed areas
2Area of stationary object
If images are displayed in the entire active area including non-exposed regions, then the display coverage is maximized, but power consumption increases due to displaying in concealed areas
Solution Approach 1:
The system applies partial action by displaying images only in the exposed active area rather than the entire active area. The boundary determining member identifies the exposure boundary, and the system deliberately limits image display to only the necessary exposed portion, avoiding waste of energy on concealed areas while maintaining adequate display coverage
Solution Approach 2:
The system changes the display range parameter dynamically based on the detected exposure boundary. By adjusting the display area parameter according to the actual exposed region, the system optimizes the balance between display coverage and power consumption, displaying images only where needed rather than across the entire active area
3Device complexity
If the display range is fixed across the entire active area, then the display structure is simple, but it cannot adapt to changes in the exposed area leading to poor user experience
Solution Approach 1:
The display range is made dynamic rather than fixed. The system continuously monitors the exposure boundary using capacitance sensing and adjusts the display area accordingly. This dynamic adaptation allows the display to respond to configuration changes while maintaining a relatively simple overall structure through the use of sensor-based detection
4Ease of manufacture
If the active area extends over both exposed and non-exposed regions, then the manufacturing is simplified, but it becomes difficult to distinguish between exposed and concealed areas
Solution Approach 1:
The boundary determining member acts as an intermediary between the display touch module and the control system. It senses capacitance values at different positions to identify the exposure boundary, providing critical information that enables the system to distinguish between exposed and concealed areas without complicating the manufacturing process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables efficient image display only in the exposed area, reducing power consumption and enhancing user convenience by accurately determining and adapting to changes in the exposed area, thereby optimizing the display experience.
Implementation Method 1
a boundary determining member configured to sense a capacitance of the touch member and calculate coordinates of an exposure boundary between the exposed area and non-exposed area of the display touch module
Data Source
AI summary
A display device and a method of driving a display device. The display device includes a housing, a display touch module including a non-exposed area covered by the housing, an exposed area located outside the housing, and an active area over the non-exposed area and the exposed area. The display touch module includes a display member configured to display an image and a touch member on the display member configured to sense a touch input. The display device also includes a boundary determining member configured to sense a capacitance of the touch member and calculate coordinates of an exposure boundary between the exposed area and non-exposed area of the display touch module. The display device is configured to adjust a display range of the active area according to the coordinates of the exposure boundary calculated by the boundary determining member.