Multi-Touch Sensing Structure With Angular Panel Suspension
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Solution Overview
Problem
Conventional force-sensing touch displayers are limited to single-touch functions and suffer from poor sensing accuracy due to insufficient sensors and frictional forces between the display panel and substrate.
Innovation Solution
A sensing structure with multiple sensing elements disposed between a substrate and panel forms multiple sensing areas, each generating a touch voltage, which is processed to calculate touch positions, enabling multi-touch functionality and improved accuracy by using a conductive assembly and process module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sensors are disposed at four corners of the displayer to form a sensing area, then the device structure is simple, but the touch function is limited to single-touch and sensing accuracy is insufficient
Solution Approach 1:
The sensing structure is divided into multiple independent sensing elements (first, second, third, and fourth sensing elements) arranged at the corners, with each element capable of independently detecting touch. This segmentation allows the system to distinguish between single-touch and multi-touch operations, enabling versatile touch functions while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent introduces a vertical dimension by suspending the display panel at an angle relative to the substrate, creating a three-dimensional sensing space. This angular arrangement allows touch forces to be detected from multiple spatial perspectives, enhancing the ability to distinguish between different touch types (single-touch vs. multi-touch) and improving sensing accuracy without significantly increasing horizontal complexity.
2Device complexity
If the display panel is suspended by a string or clamped by a gripper to form a space for receiving sensors, then the sensing area is created, but frictional force is introduced to the sidewall of the panel which adversely affects sensing accuracy
Solution Approach 1:
The patent extracts the panel support function from the sensing structure by using separate support members (strings or grippers) that are specifically designed not to contact the sensing elements. This separation removes the source of frictional interference from the sensing process, allowing accurate detection of touch forces without contamination from suspension-related friction.
Solution Approach 2:
The patent introduces intermediary support members (strings or grippers) that mediate between the panel and the substrate without interfering with the sensing elements. These intermediaries create the necessary spatial separation while maintaining a friction-free environment for the sensing elements, thus preserving sensing accuracy.
3Measurement precision
If multiple sensing elements are disposed between substrate and panel to form multiple sensing areas, then multi-touch function and sensing accuracy are improved, but device complexity increases
Solution Approach 1:
The patent combines multiple sensing elements (first, second, third, and fourth sensing elements) into a unified sensing structure that shares common support and electrical connection infrastructure. This merging approach allows multiple sensing areas to be implemented while reducing the overall complexity compared to having completely separate sensing systems for each element.
Solution Approach 2:
The sensing structure is designed with universal components that serve multiple functions: the support members simultaneously suspend the panel and create sensing space, the electrical connections serve both power delivery and signal acquisition, and the angular panel arrangement simultaneously enables multi-touch detection and improves sensing accuracy. This multi-functionality reduces overall system complexity.
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 enables multi-touch functionality and enhances sensing accuracy by eliminating frictional forces and utilizing multiple sensing areas to calculate precise touch positions, addressing the limitations of conventional single-touch displayers.
Implementation Method 1
Each of the sensing elements generates a touch voltage in response to at least one touch on the sensing areas
Data Source
AI summary
A sensing structure and a displayer comprising the same are provided. The displayer further comprises a substrate and a panel disposed opposite to the substrate. The sensing structure comprises a plurality of sensing elements, a conductive assembly, and a process module. Each of the sensing elements has a position data corresponding to the panel. Every several adjacent ones of the sensing elements form a plurality of sensing areas. The process module is electrically connected to the sensing elements via the conductive assembly. Each of the sensing elements generates a touch voltage in response to a touch on the sensing areas. The process module receives the touch voltages, and calculates a touch position of the one touch corresponding to the panel according to the position data and the touch voltages.