Circuit Board Segmentation for CMOS Image Sensor Noise Suppression
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Solution Overview
Problem
Existing technologies struggle to effectively suppress both hot carrier light emissions and inductive noise in solid-state image pickup apparatuses, such as CMOS image sensors, which can degrade signal quality.
Innovation Solution
A circuit board configuration with regularly arranged first, second, and third conductors, each connected to different power supplies, is used to suppress noise. This configuration includes a light-blocking structure to block hot carrier light emissions and a specific arrangement of conductor layers to mitigate inductive noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light-blocking structure is given to wires to suppress hot carrier light emissions, then noise from hot carrier light is reduced, but inductive noise from magnetic flux may still occur
Solution Approach 1:
The power supply wiring is segmented into multiple independent groups (first power supply group, second power supply group, third power supply group), each connected to different power supplies. This segmentation prevents the formation of large conductor loops and reduces magnetic flux generation, thereby suppressing inductive noise while maintaining light-blocking functionality.
Solution Approach 2:
Different regions of the circuit board are assigned different power supply connections. The first conductors are connected to a first power supply, second conductors to a second power supply, and third conductors to a third power supply. This local differentiation of power supply connections optimizes both light-blocking performance and inductive noise suppression in different areas.
2Device complexity
If wires are arranged densely to improve circuit integration, then device complexity is reduced, but magnetic flux and inductive noise increase
Solution Approach 1:
The conductor wiring is divided into multiple segments connected to different power supplies. This segmentation allows dense arrangement of conductors while preventing the formation of large current loops, thereby maintaining circuit integration without significantly increasing inductive noise.
Solution Approach 2:
The patent introduces a third dimension of power supply connection differentiation. Instead of only arranging conductors in two spatial dimensions, it adds the dimension of power supply group assignment, allowing dense conductor arrangement while controlling magnetic flux through multi-power-supply segmentation.
3Device complexity
If a single power supply is used for all conductors, then device complexity is reduced, but inductive noise cannot be effectively suppressed
Solution Approach 1:
The power supply system is segmented into multiple independent groups (first, second, and third power supplies), each serving specific conductor groups. This segmentation enables effective suppression of inductive noise by preventing large current loops while maintaining manageable device complexity through systematic power supply assignment.
Solution Approach 2:
The patent changes the parameter of power supply voltage from a single unified voltage to multiple different voltages (first voltage, second voltage, third voltage). This parameter change allows optimization of both noise suppression and power distribution efficiency without significantly increasing 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
The proposed solution effectively reduces noise in signals by blocking hot carrier light emissions and minimizing inductive noise, thereby improving the quality of images captured by solid-state image pickup apparatuses.
Implementation Method 1
there is a technology of giving a light-blocking structure to wires formed between active elements and photoelectric converting units
Implementation Method 2
magnetic flux passing through the conductor loop occurs as a result of a change of a current flowing through the wire, and this generates an induced electromotive force in the conductor loop
Data Source
AI summary
The present technology relates to a circuit board, a semiconductor apparatus, and electronic equipment that are configured to make it possible to more effectively suppress the occurrence of noise in signals. A circuit board includes first conductors arranged regularly in a first direction, second conductors arranged regularly in the first direction, and third conductors arranged regularly in the first direction. A first power supply connected to the first conductors, a second power supply connected to the second conductors, and a third power supply connected to the third conductors are different power supplies. The present technology can be applied to a circuit board of a semiconductor apparatus and the like, for example.