Flexible Display Device with Overlapping Sensor Layers
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Solution Overview
Problem
Current display devices lack flexibility and effective input methods, making them unsuitable for applications requiring thin, lightweight, and bendable designs with integrated touch and distortion sensing capabilities.
Innovation Solution
A flexible display device structure incorporating a first and second substrate with overlapping element layers, including a display part and sensor elements, allowing for bending detection and touch input, utilizing a metal thin film resistor or piezoelectric elements for distortion sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a flexible display device structure with multiple substrates and element layers is used, then flexibility and thinness are improved, but device complexity increases
Solution Approach 1:
The display device is divided into multiple functional layers including first and second substrates, first and second element layers with different functions (display and sensing), allowing each layer to be optimized independently while maintaining overall flexibility
Solution Approach 2:
Multiple element layers are stacked and nested between the substrates, with the first element layer containing display portions and first sensor elements, and the second element layer containing second sensor elements, creating a compact multi-functional structure
2Adaptability or versatility
If sensor elements are integrated into the display device, then input functionality is improved, but manufacturing complexity increases
Solution Approach 1:
The display function and sensing functions are merged into a single integrated structure where the first element layer contains both display portions and first sensor elements, while the second element layer contains second sensor elements, enabling multiple functions in one device
Solution Approach 2:
The first element layer serves multiple purposes: displaying visual information through display portions and detecting touch or pressure through first sensor elements, while the second element layer provides additional sensing capabilities, making each layer multi-functional
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 a flexible, lightweight, and thin display device with integrated touch and distortion sensing capabilities, allowing for novel input methods like bending actions, enhancing usability and functionality.
Implementation Method 1
The first sensor element part is configured to detect presence or absence of an object touching the first substrate or the second substrate
Implementation Method 2
utilizing a metal thin film resistor or piezoelectric elements for distortion sensing
Data Source
AI summary
To provide a display device having an input means using a bending action. A display device includes a first substrate, a second substrate, a display part, a first sensor element, and a second sensor element. The display part is provided between the first substrate and the second substrate. The first sensor element and the second sensor element are provided in their respective regions overlapping with the display part between the first substrate and the second substrate. The region where the second sensor element is provided overlaps with the region where the first sensor element is provided. The first substrate and the second substrate have flexibility. The first sensor element has a function of detecting the presence or absence of an object touching the first substrate or the second substrate. The second sensor element has a function of detecting the distortion of the first substrate or the second substrate.