Flexible Display Recognition Pattern for Area Detection
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Solution Overview
Problem
Flexible display panels that roll into and out of a housing require accurate detection of the exposed display area to adjust image size, but existing technologies struggle to reliably sense the size changes, especially under power fluctuations or when the panel is unfolded or folded.
Innovation Solution
A display device with a flexible panel featuring a recognition pattern of indicators, a light-receiving sensor, and a controller that generates image signals based on sensed indicators, allowing for real-time detection of the exposed area and adjusting image size accordingly, even during power changes or non-linear bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible display panel is rolled into and out of a housing, then the display area can be variably exposed, but the existing technology cannot reliably sense the size changes of the exposed area
Solution Approach 1:
A recognition pattern consisting of multiple indicators is introduced as an intermediary element between the flexible display panel and the light-receiving sensor. This pattern serves as a mediator that enables the sensor to detect the exposed display area by recognizing which indicators are visible, thereby solving the measurement precision problem without affecting the adaptability of the display area exposure mechanism
Solution Approach 2:
The patent replaces complex mechanical measurement systems with an optical sensing system. Instead of using mechanical encoders or physical position sensors to detect the exposed area, the system uses a light-receiving sensor to optically detect the recognition pattern indicators, substituting mechanical measurement with optical detection to achieve reliable size change sensing
2Measurement precision
If the display device needs to correctly recognize the size of the display area, then image size can be adjusted accordingly, but additional sensing configurations are required
Solution Approach 1:
The recognition pattern indicators serve multiple functions: they act as both display elements and sensing markers. The same indicators that can be used for normal display operations also function as the recognition pattern for area detection, eliminating the need for separate dedicated sensing components and reducing overall device complexity while maintaining precise measurement capability
Solution Approach 2:
The patent uses a simplified recognition pattern that copies the basic structure of display pixels (indicators) to serve the sensing function. By using the same indicator structure for both display and recognition purposes, the system avoids adding complex sensing configurations while achieving accurate display area size recognition
3Adaptability or versatility
If the flexible display panel is unfolded or folded during operation, then the display area changes, but power fluctuations affect the reliability of detection
Solution Approach 1:
The recognition pattern is pre-configured on the flexible display panel before operation. This preliminary arrangement of indicators ensures that when the panel is unfolded or folded, the sensor can immediately recognize the exposed area without requiring complex real-time analysis or additional power-intensive processing, thereby maintaining detection reliability during power fluctuations while preserving display flexibility
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
Enables precise image display corresponding to the exposed area without additional configurations, maintaining a transparent state when not in use and reducing power consumption by entering a power-saving mode when fully retracted.
Implementation Method 1
a light-receiving sensor positioned in the housing corresponding to the recognition pattern configured to recognize one of the plurality of indicators and sense the exposed display area of the flexible display panel
Data Source
AI summary
A display device which displays an image having a size corresponding to a display area exposed outside a housing is disclosed. In one aspect, the display device includes a flexible display panel having a recognition pattern, a housing, and a light-receiving sensor. The recognition pattern includes a plurality of self-luminous indicators arranged according to a first direction, and having different colors or different light-emitting intensities. The housing is coupled to the flexible display panel for entering/discharging of the flexible display panel according to the first direction such that a display area of the flexible display panel is variously exposed. The light-receiving sensor is positioned corresponding to the recognition pattern in the housing and respectively recognizes a plurality of indicators to sense the exposed display area of the flexible display panel.