Wood Veneer Backing With Hidden Capacitive Touch Tracking
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Solution Overview
Problem
Existing wood veneer products lack integrated touch sensing capabilities, requiring separate installation of capacitive sensors and cavity creation, which complicates the manufacturing process and affects the natural appearance of the veneer.
Innovation Solution
A wood veneer product with embedded capacitive touch sensing functionality, featuring one or more layers of wood veneer bonded to a cellulose-based backing layer with electrically conductive tracking on the opposite surface, allowing for capacitive touch sensing without visible modifications to the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate capacitive sensors are installed into the veneer surface, then touch sensing capability is achieved, but the natural appearance of the wood veneer is compromised and manufacturing complexity increases
Solution Approach 1:
The conductive tracking is moved from the traditional surface-mounted position on the veneer to the backing layer dimension. This dimensional relocation allows the sensing functionality to exist in a different spatial plane, eliminating visual interference while maintaining touch detection capability through the veneer layers.
Solution Approach 2:
The conductive tracking is nested within the backing layer structure, embedded beneath the veneer layers. This nesting approach integrates the sensing functionality inside the existing veneer product structure, allowing the natural wood grain and surface appearance to remain completely visible and unmodified.
2Adaptability or versatility
If separate capacitive sensors with circuit boards are installed, then touch sensing is enabled, but device complexity and installation difficulty increase
Solution Approach 1:
The conductive tracking is merged with the backing layer in a single integrated component. This combination eliminates the need for separate sensor modules, circuit boards, and associated wiring that would otherwise be required, significantly simplifying both the product structure and installation process.
Solution Approach 2:
The backing layer serves multiple functions simultaneously: it provides structural support to the veneer, electrical insulation, and houses the conductive tracking for touch sensing. This multi-functionality consolidates what would traditionally require separate components into a single universal element.
3Adaptability or versatility
If conductive tracking is placed on the surface of the veneer, then capacitive sensing is achieved, but the natural finish and aesthetic appearance are modified
Solution Approach 1:
The conductive tracking is relocated to the backing layer dimension, placing it in a different spatial plane from the aesthetic surface. This dimensional separation allows the sensing functionality to operate effectively while the natural wood finish remains completely visible and unmodified from the front view.
Solution Approach 2:
The veneer layers act as an intermediary between the user's touch and the conductive tracking on the backing layer. This intermediary structure transmits the capacitive signal from the surface touch to the embedded tracking while protecting the aesthetic appearance of the wood grain and finish.
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
Enables seamless integration of touch sensing capabilities into wood veneer products, maintaining the natural appearance while providing accurate and versatile touch detection through capacitive sensing, suitable for various applications without the need for additional sensor installation.
Implementation Method 1
the electrically conductive tracking is arranged to provide capacitive touch sensing
Data Source
AI summary
A wood veneer product (1) comprises one or more layers of wood veneer (2). A backing layer (4), for example a cellulose-based backing layer, has a first outer surface bonded to the one or more layers of wod veneer (2). Electrically conductive tracking (8) is arranged on or against a second outer surface of the backing layer (4) opposite to the first outer surface.