Flexible E-Paper Display With Carbon Nanotube Touch Panel
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Solution Overview
Problem
Portable electronic devices with large display screens face increased volume and weight due to integrated non-flexible control and processing units, limiting their size and flexibility, while smaller screens compromise visual quality.
Innovation Solution
A display system comprising a stacked structure of electronic paper and a touch panel with a shared transparent substrate, where the touch panel uses a transparent carbon nanotube layer for flexibility and mechanical strength, and control units are integrated into an electronic device, allowing for a lightweight, flexible, and high-quality display solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If control units and processing units are integrated with large display screens together, then display screen size can be increased, but volume and weight of the portable electronic apparatus will be increased
Solution Approach 1:
The patent divides the system into two separate parts: a flexible display device containing only the display screen and touch panel, and a separate electronic device containing the control and processing units. This segmentation allows the display to be lightweight and flexible while the processing unit can be placed elsewhere, resolving the contradiction between large screen size and increased weight.
Solution Approach 2:
The control units and processing units are extracted from the display structure and placed in a separate electronic device. This extraction removes the heavy non-flexible components from the display, enabling large-screen flexible displays without proportionally increasing the weight of the display itself.
2Stability of the object's composition
If control units, processing units, and other chips are made of non-flexible material, then the portable electronic apparatus becomes stiff and cannot be bent, but this limits flexibility and portability
Solution Approach 1:
The patent segments the rigid control units from the flexible display structure. The display device itself uses only flexible materials enabling bending, while the rigid processing units are placed in a separate electronic device, allowing the display to achieve flexibility without compromising the structural stability of the processing components.
Solution Approach 2:
The display device employs flexible substrates and thin-film structures throughout, including flexible transparent substrates, flexible touch panels, and flexible electrodes. This enables the entire display assembly to be bent and folded while maintaining functionality, achieving adaptability without sacrificing the stability of the separate processing unit.
3Weight of stationary object
If display screens are made smaller to reduce volume and weight, then portability improves, but visual effect of the display screens is influenced negatively
Solution Approach 1:
By separating the display from the processing unit, the patent enables the display to be optimized independently for visual quality. The flexible display can achieve large screen areas with high resolution and quality without being constrained by the weight and volume of integrated processing components, resolving the trade-off between size and visual effect.
4Strength
If transparent carbon nanotube layer is used for touch panel, then flexibility and mechanical strength are improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses transparent carbon nanotube layers as a composite material that combines flexibility, transparency, and mechanical strength in a single component. This composite material approach achieves multiple performance goals simultaneously, making the touch panel both flexible and strong while maintaining ease of integration into the flexible display structure.
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 configuration reduces the volume and weight of the display device, enables flexible and large display designs, and enhances visual quality by separating control units from the display, allowing for improved user interaction and shared display capabilities.
Implementation Method 1
The touch panel uses a transparent carbon nanotube layer for flexibility and mechanical strength
Data Source
AI summary
A display device includes an e-paper, a touch panel, and an external data interface. The e-paper has a display surface. The touch panel is located on the display surface of the e-paper. The touch panel is configured to control the e-paper. The data interface is configured to electrically connect the e-paper and the touch panel to an electric device. The e-paper and the touch panel include a plurality of processing units and control units integrated in the electric device. The present disclosure also relates to a display system using the display device.