Auxiliary Electrode Configuration for Stylus Pairing
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Solution Overview
Problem
Existing touch devices experience a blank space issue during stylus pairing due to the time required to obtain the stylus location after pairing, and finger interference can further delay this process, leading to unstable communication and unwanted blank spaces in handwriting display.
Innovation Solution
Incorporating an auxiliary electrode configuration under the bezel that transmits an uplink signal, allowing earlier stylus pairing and reducing interference from user input, thus stabilizing communication between the touch device and stylus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the touch sensor transmits uplink signal only during stylus movement detection, then the pairing process can be completed, but a blank space appears in handwriting display due to time delay in obtaining stylus location
Solution Approach 1:
The auxiliary electrode configuration performs preliminary pairing actions by detecting stylus presence and initiating pairing before the stylus actually contacts the touch sensor. This advance detection and preliminary pairing eliminates the time delay that causes blank spaces in handwriting display, as the system is already prepared to immediately track stylus movements upon contact.
2Reliability
If the stylus needs to be closer to the touch sensor to receive uplink signal when finger touches the sensor, then signal interference is reduced, but pairing time increases and blank space is enlarged
Solution Approach 1:
The auxiliary electrode configuration acts as an intermediary element between the touch sensor and the stylus. It provides an additional signal transmission path that is less susceptible to finger interference, enabling reliable communication without requiring the stylus to be extremely close to the touch sensor. This intermediary approach maintains communication stability while reducing pairing time.
3Reliability
If the pairing process requires complete signal exchange between touch sensor and stylus, then reliable pairing is achieved, but the process takes too long causing blank space in handwriting
Solution Approach 1:
The auxiliary electrode configuration performs preliminary detection and pairing initiation before the stylus contacts the touch sensor. This advance action reduces the time required for complete signal exchange during actual pairing, maintaining reliability while improving handwriting speed by eliminating delays.
Solution Approach 2:
The system performs partial pairing actions in advance through the auxiliary electrode configuration, completing the essential pairing steps before stylus contact. This partial action approach ensures reliable pairing is achieved without requiring the full signal exchange sequence to occur during the critical handwriting period, thus improving productivity.
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 auxiliary electrode configuration enables faster stylus pairing and reduces blank spaces in handwriting, providing a more stable communication quality and accurate line representation on the display.
Implementation Method 1
The auxiliary electrode configuration is located outside the touch sensor and configured to transmit an uplink signal
Data Source
AI summary
A touch device includes a substrate, a touch sensor and an auxiliary electrode configuration. The touch sensor is located on the upper surface of the substrate. The auxiliary electrode configuration is located outside the touch sensor and is used to transmit an uplink signal.