Touch Frame Bar Layout to Prevent Accidental Side Activation
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Solution Overview
Problem
Existing electronic devices with touchpads and touch bars are prone to accidental activation of the touch bar when grabbed from the side while the screen is open, due to the proximity of the touch bar to the edge.
Innovation Solution
The design incorporates a touch frame bar with a width ratio less than 20% of the outer side edge, and second display areas with a length ratio less than 15% of the touch frame bar, featuring a haptic feedback module with embedded coils and magnets, force sensors, and a light source module to enhance feedback and prevent accidental keystrokes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the touch frame bar is positioned close to the outer side edge to maximize display area, then the display area is increased, but the user may accidentally press the touch frame bar when grabbing the device
Solution Approach 1:
The touch frame bar is designed with non-uniform width along its length, creating different local characteristics. The first width (near outer side edge) is specifically controlled to be less than 20% of the outer side edge width, while other portions may have different dimensions. This local variation allows the touch frame bar to provide adequate display area where needed while maintaining a safe distance from the outer side edge in critical areas to prevent accidental activation.
2Reliability
If the touch frame bar width is reduced to prevent accidental pressing, then accidental activation is prevented, but the display area and user feedback are reduced
Solution Approach 1:
The touch frame bar is segmented into different functional zones along its length, with the second display areas having specific length ratios (less than 15% of total touch frame bar length). These segments correspond to regions with haptic feedback modules and force sensors. This segmentation allows concentrated haptic feedback in key areas while maintaining overall compact dimensions to prevent accidental activation, optimizing both reliability and user interaction.
3Ease of operation
If haptic feedback modules are added to enhance user interaction, then user feedback is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
Multiple functional modules are merged into an integrated assembly: the haptic feedback module (with embedded coils and magnets), force sensors, light source module, and touch circuit board are combined within the touch frame bar structure. The haptic feedback module includes a magnet set and coil layer that work together with the force sensors to provide unified tactile and force feedback. This integration reduces the number of separate components and simplifies manufacturing while delivering enhanced user interaction.
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
Prevents accidental activation of the touch bar and enhances haptic feedback, particularly for important keys, by strategically positioning the touch frame bar and incorporating specific ratios and modules to improve user interaction.
Implementation Method 1
The haptic feedback module comprises an embedded coil layer and a magnet set. The embedded coil layer is disposed on the touch circuit board and is away from the cover plate. The magnet set is disposed on the holding member and constitutes a vibration module with the embedded coil layer.
Implementation Method 2
The light source module comprises at least one light guide plate and at least one light-emitting member. The light guide plate is disposed between the cover plate and the touch circuit board. The light-emitting member is disposed on the touch circuit board and configured to emit light toward the light guide plate.
Data Source
AI summary
An electronic device includes a display and an input device. The input device includes a keyboard set, a touchpad, and a touch frame bar. The touch frame bar includes a cover plate, a touch circuit board, a haptic feedback module, and a light source module. The cover plate has symbolic patterns. The touch circuit board is opaque and disposed under the cover plate. The haptic feedback module is disposed on one side of the touch circuit board. The light source module is disposed between the cover plate and the touch circuit board. The input device has an outer side edge extending in a width direction. The outer side edge and the touch frame bar have a first width and a second width respectively in the width direction. A ratio of the second width to the first width is less than 20%.