Sensor Layer Channel Segmentation for Flicker Reduction
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Solution Overview
Problem
Existing electronic devices face challenges in achieving both high image quality and sensing sensitivity, particularly in multimedia devices with touch-based input methods, where flicker phenomena can degrade image quality and reduce sensing accuracy.
Innovation Solution
The implementation of a sensor layer with a specific arrangement of channels, where an uplink signal is provided to X first channels and an inverse phase signal to Y second channels, with Z off channels turned off, allows for increased image quality by reducing flicker and enhanced sensing sensitivity by ensuring the uplink signal covers the entire sensing area without dead zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an uplink signal is provided to all channels for comprehensive sensing coverage, then sensing sensitivity is improved, but flicker phenomena occur that degrade image quality
Solution Approach 1:
The sensor layer channels are segmented into three distinct groups: first channels receiving uplink signals, second channels receiving inverse phase signals, and off channels that are turned off. This segmentation allows different regions to serve different functions, reducing flicker in the display area while maintaining sensing coverage through the coordinated operation of the first and second channels
Solution Approach 2:
Different signal configurations are applied to different channel groups based on their local requirements. The first channels are optimized for sensing coverage, the second channels provide inverse phase compensation to reduce flicker, and the off channels are disabled to eliminate flicker sources in specific regions, achieving local optimization throughout the sensor layer
2Device complexity
If the sensor layer uses a simple channel configuration, then device complexity is reduced, but image quality and sensing sensitivity cannot be simultaneously improved
Solution Approach 1:
The sensor driver dynamically configures channel operations by selectively providing uplink signals to first channels, inverse phase signals to second channels, and turning off other channels. This dynamic control allows the system to adapt signal distribution to achieve both high image quality and sensing sensitivity without requiring a permanently complex hardware architecture
Solution Approach 2:
The sensor layer employs periodic uplink sections where signals are alternately provided to different channel groups. This periodic signal distribution pattern enables comprehensive sensing coverage over time while minimizing flicker phenomena, achieving high reliability without continuous complex operation
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
This configuration enhances image quality by minimizing flicker and increases sensing sensitivity by ensuring comprehensive coverage of the sensing area, thereby improving user input detection accuracy.
Implementation Method 1
The sensor layer may include a plurality of electrodes that each extends in a first direction and are arranged in a second direction intersecting the first direction and a plurality of cross electrodes that each extends in the second direction and are arranged in the first direction
Data Source
AI summary
An electronic device may include a display layer that displays an image and a sensor layer disposed on the display layer and sensing an external input. The sensor layer includes a plurality of channels equal to M. M is an integer greater than or equal to 5. A sensor driver drives the sensor layer. In an uplink section, the sensor driver provides an uplink signal to X first channels that are continuously arranged and provides an inverse phase signal having an inverse phase of the uplink signal to Y second channels that are continuously arranged. X and Y are integers greater than or equal to 2. Z off channels that are continuously arranged and are positioned between the first channels and the second channels may be turned off. Z is an integer greater than or equal to 1. M is a sum of X, Y and Z.