Touch Sensor Electrode Layout for Higher Display Input Sensitivity
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Solution Overview
Problem
Existing display devices with input sensors lack improved sensing sensitivity, which affects the accuracy and reliability of user input detection.
Innovation Solution
A display device with an input sensor that includes a plurality of first and second sensing electrodes disposed on a sensing area, with signal lines connected to these electrodes, and a specific arrangement of emission areas corresponding to different light colors, enhancing sensing sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional input sensor is used in a display device, then the device can detect user inputs, but the sensing sensitivity is insufficient affecting accuracy and reliability
Solution Approach 1:
The sensing area is divided into multiple first sensing areas and second sensing areas that are alternately disposed. Each sensing area contains sensing electrodes arranged in specific patterns, creating segmented sensing zones that improve measurement precision while maintaining detection reliability through distributed sensing coverage
Solution Approach 2:
Different sensing areas (first and second sensing areas) are configured with different electrode arrangements and patterns tailored to their specific locations. This local optimization allows each sensing zone to have enhanced sensitivity characteristics suited for its position, thereby improving overall sensing precision without compromising reliability
2Measurement precision
If sensing electrodes are arranged to improve sensing sensitivity, then detection accuracy improves, but the device structure becomes more complex
Solution Approach 1:
The patent extracts and separates the sensing function into distinct first sensing areas and second sensing areas with different electrode configurations. This extraction allows complex sensing patterns to be organized into modular, manageable units that can be manufactured using standardized processes, reducing overall device complexity while maintaining high sensing accuracy
Solution Approach 2:
The sensing electrodes are arranged in two-dimensional patterns with specific geometric configurations within each sensing area. This dimensional organization of electrodes creates complex sensing capabilities through spatial arrangement rather than increasing the number of electrode layers, thereby improving sensing accuracy without proportionally increasing structural complexity
Data Source
AI summary
A display device including an input sensor divided into a plurality of first sensing areas and a plurality of second sensing areas, which are alternately disposed, and the plurality of first sensing areas and the plurality of second sensing areas have the same area. Each of the plurality of first sensing areas and the plurality of second sensing areas includes a corresponding crossing area of crossing areas between a plurality of first sensing electrodes and a plurality of second sensing electrodes. Openings of the sensing electrodes disposed on each of the plurality of first sensing areas have a first arrangement, and openings of the sensing electrodes disposed on each of the plurality of second sensing areas have a second arrangement different from the first arrangement.