Touch Panel Display Integrated Keys Bottom PET Layer
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Solution Overview
Problem
Existing touch panel displays face challenges in effectively integrating physical buttons with touchscreen components, particularly in providing tactile feedback and minimizing space usage while maintaining user interface functionality.
Innovation Solution
The integration of physical buttons with the bottom polyethylene terephthalate (PET) layer of the touchscreen display, where the buttons are placed close to the touchscreen region, allowing for simplified assembly and combined signal processing with touch events through conductive layers and dome pads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If physical buttons are placed close to the touchscreen display, then the footprint of physical buttons is decreased and user association is improved, but the integration complexity with touch panel layers increases
Solution Approach 1:
The patent merges the physical button structure with the touch panel layers by integrating buttons directly onto the bottom PET layer. The button assembly includes conductive layers and dome pads that are combined with the touch-sensitive layers, creating a unified structure that eliminates separate mounting steps and reduces overall footprint while maintaining both tactile and touch functionality.
Solution Approach 2:
The bottom PET layer serves multiple functions: it acts as the substrate for the touch-sensitive layers and simultaneously serves as the mounting surface for the physical buttons. The conductive layers and dome pads are designed to handle both touch events and button press events, allowing a single integrated structure to perform multiple input functions.
2Ease of manufacture
If physical buttons are integrated with touch panel layers, then tactile feedback is provided and assembly is simplified, but the manufacturing precision requirements increase
Solution Approach 1:
The conductive layers and dome pads are pre-formed on the bottom PET layer during the touch panel manufacturing process, before the physical buttons are attached. This preliminary preparation ensures that the button mounting locations are already precisely positioned, reducing the precision requirements for subsequent button attachment steps and simplifying the overall assembly process.
Solution Approach 2:
By combining the button structure with the touch panel layers in a single integrated assembly, the patent reduces the number of separate components that need to be aligned and assembled. The button assembly is treated as an integrated unit with the conductive layers and dome pads, simplifying the manufacturing process while maintaining precise alignment through the unified structure.
Data Source
AI summary
A touch screen touch screen display includes a bottom conductor layer coupled to a top conductor layer. The bottom conductor layer extends beyond the top conductor layer adjacent the top conductor layer, exposing a region of the bottom conductor layer. One or more manually actuatable components (e.g., buttons) are coupled to the region of the bottom conductor layer. The bottom conductor layer may include a substrate (such as a polycarbonate layer) and a polymer layer (such as polyethylene terephthalate) formed on the substrate.