Touch Screen Panel Bezel Reduction via Side Sensor Channel Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional touch screen panels have increased size due to bezel regions on both sides, which are caused by the connection wires to external devices, limiting their compactness and usability.
Innovation Solution
The design includes first and second sensor electrodes intersecting each other, with bridge electrodes and sensor channels connected to an external driving unit, reducing the need for extensive bezel regions by minimizing the length of sensor channels and using an insulating layer to expose bridge electrodes for connection, thereby reducing the overall panel size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection wires are extended to both sides of the touch screen panel, then electrical connection to external devices is achieved, but bezel size increases reducing compactness
Solution Approach 1:
The patent repositions the connection interface from the lateral edges (both sides) to the upper edge (one side) of the touch screen panel. This spatial relocation allows connection wires to be routed through the upper bezel region, eliminating the need for lateral bezel extensions and achieving compact side profiles while maintaining electrical connectivity to external devices
2Reliability
If sensor channels are extended to both sides for electrode connection, then electrical connectivity is ensured, but panel width increases reducing visibility
Solution Approach 1:
The sensor channels are reconfigured to route electrical signals from the upper edge of the panel rather than extending to the lateral edges. This dimensional change in signal routing allows the panel width to be minimized while maintaining complete electrical connectivity between sensor electrodes and external devices through the upper connection interface
3Reliability
If bridge electrodes are exposed through insulating layer, then electrical connection is achieved, but manufacturing complexity increases
Solution Approach 1:
The insulating layer is pre-formed with designated exposure regions for the bridge electrodes before final assembly. This preliminary preparation of the insulating layer structure allows bridge electrodes to be automatically exposed at correct positions during subsequent manufacturing steps, reducing manual intervention and simplifying the overall manufacturing process while ensuring reliable electrical connections
Data Source
AI summary
A touch screen panel including a substrate, first sensor electrodes disposed on the substrate, extending in a first direction, and electrically connected to each other, second sensor electrodes disposed on the substrate, extending in a second direction intersecting the first direction, and electrically connected to each other, bridge electrodes electrically connecting the first sensor electrodes in the first direction, and at least one sensor channel electrically connected to selected first and second sensor electrodes, wherein the sensor channel is electrically connected to an external driving unit through one side of the touch screen panel.