Photodetecting Device Shared Common Lines Layout
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Solution Overview
Problem
Photodetecting devices face a challenge in increasing detection accuracy due to the limited space available for photodiodes, as more transistors or traces are required to enhance signal-to-noise ratio, leading to reduced space and sensitivity.
Innovation Solution
The introduction of a photodetecting device design where adjacent electronic units share common lines, such as a bias line, reset gate line, or Vdd line, to reduce the layout area required for these lines, thereby increasing the space available for photodiodes and enhancing detection sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If more transistors or traces are disposed to increase detection accuracy, then signal to noise ratio is improved, but space for photodiode is reduced
Solution Approach 1:
Adjacent electronic units share common bias lines, reset gate lines, and Vdd lines. This merging of line resources reduces the total number of lines required in the array substrate, thereby freeing up space that can be allocated to photodiodes while maintaining the necessary electronic functionality for detection accuracy.
2Measurement precision
If more transistors or traces are disposed to increase detection accuracy, then signal to noise ratio is improved, but detection sensitivity is reduced
Solution Approach 1:
By merging common lines among adjacent electronic units, the patent reduces overall line density and space consumption. This allows for larger photodiode areas which improve detection sensitivity, while the shared lines still provide sufficient signal-to-noise ratio performance through optimized line routing and sharing architecture.
3Area of stationary object
If common lines are shared among adjacent electronic units, then space for photodiode is increased, but device complexity is reduced
Solution Approach 1:
The patent implements a sharing architecture where adjacent electronic units共用 common bias lines, reset gate lines, and Vdd lines. This merging approach reduces the total number of lines required, thereby increasing space for photodiodes. The complexity is managed through systematic line sharing patterns that maintain electrical functionality while reducing overall device complexity.
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 design effectively increases the space for photodiodes, improving detection sensitivity and accuracy by reducing the number of lines needed, while maintaining the functionality of the photodetecting device.
Implementation Method 1
Each of the first electronic unit, the second electronic unit and the third electronic unit comprises a photodiode
Data Source
AI summary
A photodetecting device is provided. The photodetecting device includes an array substrate. The first scan line extends in a first direction. The first data line extends in a second direction, wherein first data line is crossed with the first scan line. The first electronic unit is electrically connected to the first scan line and the first data line. The second electronic unit is adjacent to the first electronic unit and is disposed along the first direction. The third electronic unit is adjacent to the first electronic unit and is disposed along the second direction. The common line transmits a signal to the first electronic unit, the second electronic unit and the third electronic unit. The common line is disposed between the first electronic unit and the second electronic unit, or between the first electronic unit and the third electronic unit.