Flexible Display Sensing via Capacitance Between Conductive and Sensing Patterns
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Solution Overview
Problem
Existing flexible display devices face challenges in accurately sensing and displaying images when the flexible display panel is variably exposed or non-linearly bent, as they rely on indirect methods such as counting rotations or using distance measuring means, which can be inefficient and affect user satisfaction.
Innovation Solution
A display device with a flexible display panel that includes a conductive pattern and a sensing pattern, where the controller senses current changes using capacitance formed between the patterns, allowing real-time recognition of the exposed display area without relying on rotation counting or distance measuring methods, optimizing image display for flexible characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If indirect sensing methods (rotation counting or distance measuring means) are used to detect the exposed display area, then the device complexity is reduced, but the measurement precision and reliability of the sensing are insufficient
Solution Approach 1:
The patent replaces indirect mechanical sensing methods (rotation counting, distance measuring means) with a direct electrical field-based sensing system. Conductive patterns are formed on the flexible display panel and corresponding sensing patterns are formed in the housing, creating capacitance-based detection that directly measures the exposed display area without mechanical components.
Solution Approach 2:
The patent introduces conductive patterns and sensing patterns as intermediary elements that form a capacitance field between them. This intermediary electrical field system serves as a mediator to detect the position and area of the flexible display panel, providing more accurate measurement than direct mechanical sensing while avoiding complex mechanical structures.
2Adaptability or versatility
If the flexible display panel is variably exposed or non-linearly bent, then the adaptability of the display device is improved, but the accuracy of image display corresponding to the exposed area deteriorates
Solution Approach 1:
The patent implements a dynamic sensing system where the capacitance between conductive patterns and sensing patterns changes in real-time as the flexible display panel is exposed or bent. The controller continuously monitors these capacitance changes to dynamically determine the current exposed display area, ensuring accurate image display adaptation regardless of the panel's flexible state.
Solution Approach 2:
The patent employs feedback control where the controller receives capacitance sensing signals from the sensing patterns, processes this information to determine the exposed display area, and then adjusts the image display accordingly. This closed-loop feedback system ensures that the displayed image always corresponds accurately to the currently exposed portion of the flexible display panel.
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 accurate sensing and display of images corresponding to the variable exposed area, improving user satisfaction by directly recognizing sub-patterns and adapting to power changes and flexible panel bending without additional configurations.
Implementation Method 1
A display device with a flexible display panel that includes a conductive pattern and a sensing pattern, where the controller senses current changes using capacitance formed between the patterns
Data Source
AI summary
A display device includes: a flexible display panel having a display area variably exposed in a first direction and including a conductive pattern; a sensing pattern positioned to correspond to the conductive pattern in the first direction; and a controller sensing a current flowing to one of the conductive pattern and the sensing pattern to display an image corresponding to the display area of the flexible display panel in the flexible display panel.