Flexible Display Actuator Segmentation for Image Clarity
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Solution Overview
Problem
Flexible displays face image distortion and functional disruption due to deformation and thermal or electric influences from actuators used for rigidity control, compromising visibility and handling.
Innovation Solution
A flexible display device with an actuator system that shifts between flexible and rigid states electrically, positioned to avoid overlapping with the display element, maintaining image clarity and usability by controlling the actuator's placement and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an actuator is arranged on the whole backside of the flexible display to control rigidity, then the display device can maintain good visibility and handling property when extended, but the display function is disturbed by thermal or electric influence from the actuator
Solution Approach 1:
The actuator is divided into multiple independent actuators arranged in specific regions rather than covering the entire backside. This segmentation allows the display device to achieve rigidity control while reducing thermal and electric influence on the display elements, as each actuator can be independently controlled and positioned away from sensitive display areas.
Solution Approach 2:
Different regions of the flexible display substrate are assigned different functions: some regions contain display elements while others contain actuators. This local differentiation ensures that actuators providing rigidity control are positioned in areas that do not interfere with display functionality, thereby maintaining handling properties while minimizing thermal and electric influence on the display.
2Adaptability or versatility
If the flexible display is made completely flexible for storage, then storability and portability are improved, but deformation applied while stored does not completely disappear causing image distortion
Solution Approach 1:
The flexible display substrate dynamically changes its rigidity state based on operational requirements. When stored or transported, the substrate remains flexible for easy storage and portability. When extended for use, actuators are activated to provide rigidity control, preventing deformation and image distortion. This dynamic transition between flexible and rigid states resolves the contradiction between storability and image stability.
3Reliability
If the actuator is positioned to avoid overlapping the display element, then the display function is not disturbed, but the device complexity increases due to precise positioning requirements
Solution Approach 1:
The substrate is divided into distinct functional regions: display element regions and actuator regions. This segmentation creates natural spatial separation that prevents overlapping between actuators and display elements. The segmented layout simplifies positioning requirements compared to a continuous actuator arrangement, as each actuator can be independently placed in its designated region without concern for interfering with display elements in adjacent regions.
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
The solution ensures undisturbed display functionality and good visibility during use while allowing for flexible storage and handling, minimizing image distortion and actuator-induced disruptions.
Implementation Method 1
a layer to shift from a flexible state to a state to have a predetermined shape and vice versa by being driven electrically
Data Source
AI summary
A display device according to an embodiment of the present invention includes: a flexible substrate having a plurality of pixels, each of the plurality of pixels comprising a display element, the plurality of pixels being arranged in a display area; and an at least one actuator which is provided so as to fit a backside of the substrate and bends the substrate, wherein the at least one actuator is provided with a layer to shift from a flexible state to a state to have a predetermined shape and vice versa by being driven electrically, and the at least one actuator does not overlap the display element in a plan view.