Integrated Display Sensor Layer for Touch, Light, and Tactile Feedback
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Solution Overview
Problem
Current display devices with touch control screens lack integration of additional sensors to enhance user interaction, necessitating a solution that combines short-range touch control and remote light control capabilities.
Innovation Solution
A sensor device integrated into the display panel, featuring a substrate with a light control component and a touch control component, utilizing a functional dielectric layer with a dielectric constant of 2.5 or higher to apply electrostatic force and generate tactile feedback, along with a photosensitive thin film transistor and switching thin film transistor for light control, and touch control electrodes for capacitive sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-function touch control component is integrated into the display panel, then the display device achieves basic touch control capability, but it lacks additional sensor functions for enhanced user interaction
Solution Approach 1:
The patent combines touch control components and light control components into a single integrated sensor device structure. The touch control component includes first and second touch control electrodes arranged in a matrix pattern on the same substrate, while the light control component includes photosensitive thin film transistors and switching thin film transistors integrated in the same layer structure, achieving multi-functionality without separate device assemblies
Solution Approach 2:
The sensor device is designed to perform multiple functions simultaneously: touch control sensing through capacitive detection, light control through photosensitive transistors, and tactile feedback through the functional dielectric layer. This universal design allows a single integrated device to replace multiple separate components, enhancing adaptability while managing complexity
2Force
If a functional dielectric layer with high dielectric constant is used to enhance tactile feedback, then the electrostatic force and tactile feedback effect are improved, but the device structure becomes more complex
Solution Approach 1:
The patent specifies that the functional dielectric layer should have a dielectric constant of 2.5 or higher to generate sufficient electrostatic force for effective tactile feedback. By optimizing this physical parameter of the dielectric material, the system achieves enhanced electrostatic force without fundamentally changing the device architecture, thus improving force output while controlling structural complexity
Solution Approach 2:
The functional dielectric layer serves as an intermediary component between the touch control electrodes and the external object. It mediates the electrostatic interaction by storing and releasing electrical energy to generate tactile feedback, enabling force enhancement without direct mechanical contact between electrodes and user finger
3Device complexity
If touch control electrodes are arranged in the same level to simplify structure, then the device structure is simplified, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies that adjacent first touch control electrodes should be electrically connected and adjacent second touch control electrodes should be connected by bridges, creating locally differentiated connection patterns. This local quality approach allows the overall same-level structure to maintain simplicity while incorporating specific connection characteristics that facilitate manufacturing and reduce precision requirements compared to completely uniform arrangements
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 effective short-range touch control and remote light control, providing enhanced tactile feedback and user interaction, addressing the limitations of single-function touch or light control devices.
Implementation Method 1
configured to apply an electrostatic force to an external object when the external object is in contact with the functional dielectric layer
Implementation Method 2
a touch control component disposed on the substrate and located on one side of the light control component
Implementation Method 3
the light control component includes a photosensitive thin film transistor and a switching thin film transistor
Data Source
AI summary
The present application discloses a sensor device and a display device. The sensor device includes a substrate, a light control component, a touch control component, and a functional dielectric layer, wherein the light control component and the touch component are disposed on the substrate, the touch component is disposed on the light control component, and the functional dielectric layer is disposed on a side of the touch control component away from the substrate and at least covers the touch control component, and configured to apply an electrostatic force to an external object when the external object is in contact with the functional dielectric layer.