Solid-State Imaging Device Phase Difference Pixel Layout
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Solution Overview
Problem
The existing imaging systems face complexity in correcting for the influence of phase difference detection pixels on adjacent imaging pixels, leading to complications in image quality due to varying disposition positions across different blocks, making it difficult to suppress image deterioration.
Innovation Solution
A solid-state imaging device with sub-blocks of the same color, where phase difference detection pixels are strategically positioned across multiple sub-blocks within a block, allowing for phase difference detection in horizontal, vertical, or diagonal directions, and enabling separate detection for each color filter, facilitating improved autofocus control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If phase difference detection pixels are disposed at different positions in different blocks, then phase difference detection can be performed, but correction calculation becomes complicated and image quality deteriorates
Solution Approach 1:
The patent applies homogeneity by disposing phase difference detection pixels at corresponding positions in multiple sub-blocks of the same color. This creates a uniform pattern where phase difference detection pixels are consistently positioned relative to their sub-block structures, simplifying the correction calculation process while maintaining detection accuracy across different blocks
2Device complexity
If phase difference detection pixels are disposed at corresponding positions in multiple sub-blocks, then correction calculation is simplified, but the number of pixels required increases
Solution Approach 1:
The patent segments the block into multiple sub-blocks of the same color (e.g., 2×2 green pixels forming a sub-block). Phase difference detection pixels are disposed at corresponding positions within these segmented sub-blocks, allowing the system to distribute the detection function across multiple smaller units rather than requiring all detection pixels in a single location
3Measurement precision
If phase difference detection pixels are used for autofocus control, then focus accuracy is improved, but adjacent imaging pixels are affected by phase difference detection pixel influence
Solution Approach 1:
The patent extracts the phase difference detection function from individual pixels and distributes it across multiple pixels disposed at corresponding positions in multiple sub-blocks. This allows the system to perform phase difference detection while reducing the influence on adjacent imaging pixels through spatial distribution and correction calculations
Data Source
AI summary
The present technology relates to a solid-state imaging device, an electronic apparatus, a lens control method, and a vehicle capable of suppressing deterioration in quality of a captured image. A sub block includes a plurality of pixels of the same color, a block includes a plurality of sub blocks including different colors, and phase difference detection pixels are disposed at positions corresponding to each other in two or more sub blocks in a case in which the phase difference detection pixels are disposed in two or more sub blocks among the plurality of sub blocks configuring the block. For example, the present technology is able to be applied to a camera that calculates an amount of a deviation of a focus and performs focus control on a basis of a calculated defocus amount.