Multi-Texture Touchpad Surface for Tactile Feedback
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Solution Overview
Problem
There is a need for improved user experience and functionality in input devices, particularly touchpads, to enhance tactile feedback and simplify operations while maintaining a sleek and economical design.
Innovation Solution
A touchpad with a glass surface featuring distinct topological features and zones, including a center button zone with a glossy surface and left and right button zones with matte surfaces, coupled with a switch mechanism that provides tactile feedback and generates signals upon contact, allowing for intuitive cursor control and additional functions like scrolling and gesture recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touchpad with multiple buttons is used, then functionality is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple button functions (left button, right button, center button with scroll wheel) into a single integrated touchpad assembly. The touch-sensitive surface acts as both the display area and the input mechanism, eliminating the need for separate physical buttons while maintaining all their functions through different zones and click depths of the same structure.
Solution Approach 2:
The touchpad serves multiple functions simultaneously: it acts as a display area for visual feedback, a clickable surface for button presses, a scroll wheel mechanism, and a gesture recognition zone. This multi-functional design allows a single component to replace what would traditionally require multiple separate input devices.
2Ease of operation
If tactile feedback is added to touchpad, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent implements different tactile characteristics in different zones of the touchpad surface. The button zones have distinct click depths and resistance profiles compared to the scrolling zone and gesture zone, providing localized tactile feedback that helps users intuitively understand which area to press and what action to expect without adding complex mechanical structures.
Solution Approach 2:
The patent replaces traditional mechanical button structures with a touch-sensitive surface that uses electrical or capacitive sensing mechanisms. The tactile feedback is achieved through controlled deformation of the touch-sensitive layers rather than mechanical springs and levers, reducing overall device complexity while maintaining user feedback.
3Ease of operation
If demarcated zones are created on touch surface, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent uses visual demarcation through different surface finishes or colorations to distinguish functional zones on the touchpad. These visual cues are applied through coating or printing processes that can be precisely controlled during manufacturing, providing clear zone boundaries without requiring extremely tight mechanical tolerances.
Solution Approach 2:
The patent creates zone demarcation by varying the depth or topology of the touch-sensitive surface rather than relying solely on planar positioning. Different zones may have slight variations in surface elevation or curvature, which are easier to manufacture with standard molding or lamination processes while still providing clear tactile and visual boundaries for users.
Data Source
AI summary
An input device and computing system is provided for a user to input data. An input device may comprise a touch sensitive surface. The touch sensitive surface may have at least one part comprising a topological feature. The topological feature at one part may differ from topological features in other parts of the touch sensitive surface.