Solid-State Imaging Device Streaking Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing solid-state imaging devices face challenges in suppressing streaking in output images due to shared power and signal lines, leading to increased chip area and power consumption, and existing correction methods using horizontal optical black regions are inadequate in eliminating streaking effectively.
Innovation Solution
A solid-state imaging device with a matrix of pixels, where a second wiring is capacitively coupled to each first wiring and a second detection unit is electrically connected to the second wiring to detect and correct signal interference, eliminating streaking without the need for horizontal optical black regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HOPB region is provided to correct streaking, then streaking correction is achieved, but chip area increases
Solution Approach 1:
The invention creates a virtual HOPB region by capacitively coupling a second wiring to multiple first wirings and detecting the combined signal. This virtual copy of the HOPB functionality is achieved without physically creating additional light-shielded pixel regions, thereby maintaining streaking correction capability while reducing chip area occupation.
Solution Approach 2:
The invention merges the signals from multiple first wirings into a single second wiring through capacitive coupling. This combination allows the detection of aggregate noise patterns that affect multiple pixels, enabling effective streaking correction without requiring separate HOPB pixel regions for each column.
2Reliability
If HOPB region is provided to correct streaking, then streaking correction is achieved, but power consumption increases
Solution Approach 1:
By creating a virtual HOPB region through capacitive coupling and signal detection, the invention avoids the need for additional physical HOPB pixels that would consume power. The virtual implementation achieves the same noise reference function with lower power consumption.
Solution Approach 2:
The second wiring and detection unit serve multiple functions: they detect noise patterns across multiple pixel columns simultaneously and provide reference signals for streaking correction. This multi-functionality reduces the overall power consumption compared to having separate HOPB pixel regions for each column.
3Reliability
If conventional HOPB configuration is used, then some streaking correction is achieved, but streaking cannot be fully eliminated in all cases
Solution Approach 1:
By capacitively coupling the second wiring to multiple first wirings, the invention merges noise signals from multiple columns into a single detectable pattern. This allows the detection unit to capture aggregate noise characteristics that affect multiple pixels, enabling more accurate streaking correction across the entire image.
Solution Approach 2:
The detection unit provides real-time feedback about noise patterns detected on the second wiring. This feedback is used by the correction processing unit to dynamically adjust and subtract noise components from pixel signals, continuously improving streaking elimination accuracy.
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 configuration allows for accurate calculation and correction of streaking amounts, reducing chip area and power consumption while effectively eliminating streaking in output images.
Implementation Method 1
a second wiring capacitively coupled to each of the plurality of first wirings
Data Source
AI summary
Provided is a new solid-state imaging device and electronic apparatus capable of eliminating streaking. Provided is a solid-state imaging device including: plurality of pixels provided in a pixel region on a substrate in a matrix form; a plurality of first wirings commonly provided to each of the plurality of pixels arranged along a first direction; a second wiring capacitively coupled to each of the plurality of first wirings; and a second detection unit that is electrically connected to the second wiring and detects a second signal appearing on the second wiring.