Full-Area Touch Panel Frame Layout for Uniform Feedback Force
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Solution Overview
Problem
Existing touch pad devices in portable computing devices lack comfortable feedback mechanisms.
Innovation Solution
A full-area touch panel device comprising a surrounding frame, elastic members, and a fixing member, with specific structural configurations to provide uniform feedback forces across the touch panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional touch pad structure is used, then the device structure is simple, but the feedback force is non-uniform and uncomfortable
Solution Approach 1:
The surrounding frame is divided into multiple frame parts (first frame parts and second frame parts) that are spaced apart, and the elastic members are segmented and disposed between the frame parts. This segmentation allows each component to independently contribute to the feedback force, achieving uniform distribution across the touch panel surface while maintaining structural clarity.
Solution Approach 2:
Elastic members are specifically disposed between the first frame parts at locations corresponding to different regions of the touch panel. This local arrangement ensures that each region receives appropriate elastic support, creating uniform feedback force distribution across the entire touch panel while maintaining a relatively simple overall structure.
2Force
If elastic members are added to provide feedback, then the feedback force is improved, but the device complexity increases
Solution Approach 1:
The elastic members are segmented and strategically disposed between specific frame parts rather than using a single continuous elastic structure. This segmentation provides effective feedback force while keeping the structure modular and manageable, avoiding excessive complexity.
Solution Approach 2:
The elastic members serve multiple functions: they provide feedback force, support the touch panel, and maintain the spacing between frame parts. This multi-functionality reduces the need for additional components, thereby limiting the increase in device complexity while improving feedback force.
3Force
If the main body part thickness is increased, then the feedback force is enhanced, but the structural balance is affected
Solution Approach 1:
The main body part of the fixing member has a greater thickness than the extension parts, creating local quality differentiation. This thicker main body part is positioned at the bottom surface of the elastic members where maximum feedback force is needed, while the thinner extension parts maintain structural balance and proper positioning without excessive weight or complexity.
Solution Approach 2:
The fixing member features asymmetric thickness distribution, with the main body part being thicker than the extension parts. This asymmetric design optimizes the feedback force generation at the critical location while maintaining overall structural balance and stability through the thinner extension portions.
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 device offers improved elastic responses and uniform feedback forces, enhancing the operation experience by ensuring consistent tactile feedback regardless of the pressed region.
Implementation Method 1
two elastic members (3), with opposite ends in the second direction being connected respectively to the second frame parts (22)... offering improved elastic responses and uniform feedback forces
Data Source
AI summary
A full-area touch panel device includes two first frame parts and two second frame parts each interconnecting the first frame parts. Two elastic members are disposed between the first frame parts and are connected to the second frame parts. A main body part is disposed on bottom surfaces of the elastic members. Two first extension parts extend from the main body part. Each of the first extension parts has a distal end portion disposed atop one of the second frame parts. Two second extension parts extend from the main body part. Each of the second extension parts has a distal end portion disposed atop another one of the second frame parts. A thickness of the main body part is greater than a thickness of each of the first extension parts and the second extension parts.