Touch Display Operating Aid with Elastic Pressure Actuation
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Solution Overview
Problem
Existing touch-sensitive display operating aids for gaming applications suffer from difficulties in differentiated signal triggering, convenient attachment and detachment, and are often incompatible with a wide range of devices due to specific device width requirements, leading to high manufacturing costs and frictional resistance issues during button switching.
Innovation Solution
The operating aid features an elastic material structure with a pressure actuation zone that can be brought from a passive to an active position by applying pressure, allowing the finger to generate a control signal only when intended, and is self-adhesive, enabling easy attachment and detachment without requiring a specific device width, thus being compatible with various devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a thin transparent adhesive film is used for the operating aid, then the film can be easily attached to the display, but control signals can be generated through the film next to material recesses causing unwanted signal transmission
Solution Approach 1:
The patent uses a flexible rubber layer with integrated material recesses instead of a thin transparent adhesive film. The rubber layer's elasticity and thickness provide mechanical isolation, preventing capacitive coupling between the finger and display surface when not actively pressing, thereby eliminating unwanted signal transmission while maintaining ease of attachment.
Solution Approach 2:
The rubber layer acts as an intermediary between the finger and the display surface. It mediates the interaction by providing a compliant interface that can be pressed to generate signals only at intended locations, blocking capacitive interference from adjacent areas while transmitting controlled pressure inputs.
2Ease of operation
If the operating aid is designed to remain permanently on the device, then it provides continuous tactile feedback, but it can only be removed with relative difficulty
Solution Approach 1:
The adhesive strength of the rubber layer is made dynamically adjustable through temperature control. At room temperature, the adhesive maintains strong bonding for continuous use and tactile feedback. When heating is applied, the adhesive softens and loses grip, allowing easy removal without damage, thus resolving the contradiction between permanent attachment and easy removal.
3Manufacturing precision
If operating aids are designed for specific device widths, then they can provide precise fit and form factor optimization, but manufacturing costs increase and compatibility with various devices decreases
Solution Approach 1:
The operating aid is designed as a universal solution that can be adapted to different device widths and form factors. The rubber layer with integrated material recesses can be configured for various display sizes, and the temperature-controlled adhesive system allows the same base design to be applied across multiple device types, reducing manufacturing costs while maintaining precise fit through customization of the rubber layer dimensions and recess patterns.
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 solution provides more precise and comfortable control of electronic devices by preventing unwanted control signals in the passive position and enabling signal generation only when necessary, reducing manufacturing costs and improving compatibility with different devices.
Implementation Method 1
The polymer layer is permeated by microscopically small air bubbles, for example, which form a large number of open pores on the display-side surface. When this adhesive layer is pressed against the display, a negative pressure is generated in each case by elastic restoring forces in the pores, by means of which the base element can be held on the display
Implementation Method 2
The operating aid features an elastic material structure with a pressure actuation zone that can be brought from a passive to an active position by applying pressure
Implementation Method 3
The extent of the signal zone can be increased in particular by using a conductive material for the operating aid
Data Source
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AI summary
The invention relates to an operating aid (10) for use on a touch-sensitive display (4), having a base element (12) which has an adhesive layer (16) for removably attaching to the display (4), said adhesive layer being provided on a display-side surface (14), and on which at least one activation region (24) is provided. The activation region can be detected in a tactile manner on a user-side outer face (20) facing away from the display-side surface (14), and the activation region can be used to act upon a signal zone (28) which can be positioned on the display-side surface (14) in order to generate a control signal that can be detected on the display (4). A detectable pressure actuation zone (30) is provided on the activation region (24). The pressure activation zone can be brought into a passive position, in which no control signals can be generated on the signal zone. The activation region (24) has an elastic material design (32) on the pressure actuation zone (30) between the display-side surface (14) and the user-side outer face (20). The material design has a first material thickness (M1) which exceeds the signal zone (28) in a passive position and a smaller second material thickness (M2) in an active position, and the pressure actuation zone (30) can be moved from the passive position, in which the pressure actuation zone is arranged at a distance from the signal zone (28), into the active position, in which the control signal is generated, by applying pressure.