Sensor Layer Electrode Structure for Display Visibility and Input Sensing
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Solution Overview
Problem
Existing multimedia electronic devices face challenges in improving visibility and sensing performance, particularly in integrating touch-based input schemes that enhance user interaction.
Innovation Solution
The electronic device incorporates a display layer with defined areas and a sensor layer featuring specific electrode arrangements, trace lines, and bridge electrodes to optimize sensing performance, including open parts and multi-layer trace line structures for improved input sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensing area is extended to improve visibility and user interaction, then the sensing performance is improved, but the complexity of the sensor layer structure increases due to multiple electrodes and trace lines
Solution Approach 1:
The sensor layer is segmented into multiple functional components: row sensing electrodes, column sensing electrodes, bridge electrodes, and trace lines. Each component performs a specific function in the sensing matrix, allowing the complex sensing area to be divided into manageable segments that can be independently optimized and manufactured.
Solution Approach 2:
The patent introduces a multi-dimensional electrode arrangement with row electrodes extending in a first direction, column electrodes extending in a second direction, and bridge electrodes connecting sub-sensing electrodes. This multi-directional arrangement creates a comprehensive sensing matrix that improves detection capability while organizing complexity across multiple spatial dimensions.
2Manufacturing precision
If multiple trace lines and bridge electrodes are added to enhance sensing accuracy, then the input detection precision is improved, but the manufacturing complexity increases
Solution Approach 1:
Multiple trace lines (first trace lines, second trace lines, and dummy trace lines) are merged into a coordinated network that collectively connects sensing electrodes to driving circuits. The bridge electrodes merge separate sub-sensing electrodes into functional units, creating integrated sensing elements that improve detection precision while streamlining the overall manufacturing process through unified structure design.
Data Source
AI summary
An electronic device may include a display layer and a sensor layer. The sensor layer may include multiple row sensing electrodes extending in a first direction, multiple column sensing electrodes extending in a second direction, multiple first trace lines electrically connected to the row sensing electrodes, and multiple second trace lines electrically connected to the column sensing electrodes. The first trace lines may be arranged in a sensing area and overlap the row sensing electrodes and the column sensing electrodes. Each of the column sensing electrodes may include an open part extending in the second direction and overlapping one of the first trace lines.