Image Sensor Voltage Wiring Layout for Stable Pixel Scanning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing semiconductor apparatuses face challenges in maintaining consistent voltage supply to pixel arrays, leading to image quality degradation due to voltage fluctuations and increased impedance in conductor lines, particularly in solid-state image pickup devices.
Innovation Solution
A semiconductor apparatus with a voltage generation circuit that supplies a first voltage to the circuit unit via a wiring portion outside the structure, reducing impedance and voltage fluctuations by connecting capacitor elements outside the device, and providing multiple connection points for voltage supply to row selection circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage is supplied via conductor lines inside the semiconductor apparatus, then the voltage supply path is compact, but voltage fluctuations and impedance increase leading to image quality degradation
Solution Approach 1:
The voltage generation circuit is extracted from the internal structure and placed outside the semiconductor apparatus. The first voltage is supplied from this external voltage generation circuit to the circuit unit via a wiring portion provided outside the structure, thereby reducing impedance and voltage fluctuations that would occur with internal conductor lines.
2Reliability
If multiple voltage supply parts are provided inside the device, then voltage supply reliability improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The voltage generation circuit is extracted from the internal structure and placed outside the semiconductor apparatus. This consolidation of the voltage supply function to a single external source simplifies the device structure while maintaining reliable voltage supply to all circuit units through the external wiring portion.
Data Source
AI summary
A semiconductor apparatus includes a structure and a wiring portion. The structure includes a pixel array having a plurality of pixels arranged in a plurality of rows and a plurality of columns, a circuit unit that scans the plurality of pixels or processes signals output from the plurality of pixels, and a voltage generation circuit that generates a first voltage. The wiring portion is provided outside of the structure. The first voltage is supplied from the voltage generation circuit to the circuit unit via the wiring portion.