Touchscreen Panel Tail Area Routing for FPCB Elimination
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Solution Overview
Problem
Touchscreen panels face challenges with increased manufacturing costs, process defects, and structural constraints due to the complexity of connecting touch sensors to a main board, leading to reliability issues and aesthetic degradation.
Innovation Solution
A touchscreen panel design featuring touch sensors on a base film with routing wires that pass through a bezel and active regions, connecting to terminals in a tail area, eliminating the need for a flexible printed circuit board and reducing the number of parts, thereby simplifying the connection process and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional flexible printed circuit board connection method is used, then touch sensors can be connected to main board, but manufacturing costs increase and process defects increase
Solution Approach 1:
The patent extracts and eliminates the flexible printed circuit board from the touchscreen structure, directly connecting touch sensors to the main board through routing wires integrated into the base film. This removal of the intermediary FPCB component reduces manufacturing complexity and cost while maintaining electrical connectivity functionality.
Solution Approach 2:
The patent merges the routing wire function with the base film structure, integrating electrical connection pathways directly into the touchscreen substrate. This consolidation eliminates the need for separate FPCB components and reduces the total number of parts requiring assembly.
2Adaptability or versatility
If multiple parts are mounted in touchscreen panel, then connection functionality is achieved, but structural constraints on part placement increase
Solution Approach 1:
The patent removes the flexible printed circuit board from the component list, reducing the number of discrete parts. This extraction simplifies the overall structure and eliminates spatial constraints associated with FPCB placement while maintaining all necessary electrical connection functions.
Solution Approach 2:
The base film is designed to serve multiple functions simultaneously: it acts as the touchscreen substrate, provides structural support, and integrates routing wires for electrical connections. This multi-functionality reduces the need for separate dedicated components.
3Area of stationary object
If traditional connection structure is used, then touch sensors are connected to main board, but bezel region size increases
Solution Approach 1:
The patent routes connection wires through the active region and bezel region in a optimized path that minimizes the required bezel area. By changing the spatial arrangement and routing dimension of connections, the design achieves compact integration without compromising connection reliability.
Data Source
AI summary
A touchscreen panel includes touch sensors on a base film and routing wires connected to the touch sensors, wherein the base film has a main area and a tail area protruding from the main area, the main area includes an active region where the touch sensors are placed and a bezel region located on the outside of the active region, and the routing wires pass through the bezel region and the active region, and connect terminals provided at one end of the tail area and the touch sensors.