Shared Power-Line Sensing Circuit Layout for Higher Pixel Aperture
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Solution Overview
Problem
Conventional electronic devices with both display and sensing functions face a challenge in maintaining high pixel aperture ratio due to the increased number of signal lines or traces required for sensing circuits, which affects display quality.
Innovation Solution
The electronic device incorporates a design where two adjacent sensing circuits are coupled to the same power line, and transistors of these circuits are connected to shared signal lines with pixel circuits, reducing the number of signal lines and power lines in the sensing region, thereby enhancing the pixel aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensing circuits are disposed in the display region, then sensing function is achieved, but the number of signal lines increases, reducing pixel aperture ratio
Solution Approach 1:
The patent merges the power supply lines of adjacent sensing circuits by connecting multiple sensing circuits to a shared power line, reducing the total number of power lines required in the display region. This consolidation allows sensing functions to be maintained while minimizing the area occupied by signal lines, thereby preserving pixel aperture ratio.
2Reliability
If separate power lines are provided for each sensing circuit, then reliable power supply is ensured, but the number of power lines increases, affecting display quality
Solution Approach 1:
Adjacent sensing circuits are designed to share common power lines, consolidating multiple individual power supply connections into fewer shared lines. This merging approach reduces device complexity by minimizing the total number of power lines while maintaining reliable power distribution to all sensing circuits through the shared infrastructure.
Data Source
AI summary
The present disclosure provides an electronic device including a first sensing circuit, a second sensing circuit and a power line. The first sensing circuit includes a first sensing unit and a first transistor, and a first end of the first sensing unit is coupled to a control end of the first transistor. The second sensing circuit includes a second sensing unit and a second transistor, and a first end of the second sensing unit is coupled to a control end of the second transistor. A first end of the first transistor and a first end of the second transistor are coupled to the power line.