Imaging Device Special Pixel Color Filter Shape Formation
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Solution Overview
Problem
In imaging devices, when special pixels replace normal pixels, the absence of color filters in certain regions can lead to irregular filter formation, affecting the light receiving sensitivity and accuracy of the imaging device.
Innovation Solution
The imaging device incorporates a configuration where normal pixels are arranged in a matrix, with special pixels replacing some normal pixels. A color filter corresponding to the normal pixels is arranged according to a predetermined rule, and a special filter is placed corresponding to the special pixel. Additionally, a special pixel color filter is arranged to surround at least part of the periphery of the special filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If special pixels replace normal pixels in the pixel array, then the imaging device can detect additional information (such as infrared light or phase difference), but the color filter cannot be formed in a desired shape due to the absence of color filter regions corresponding to special pixels, causing light receiving sensitivity fluctuations and accuracy decrease
Solution Approach 1:
A transparent resin layer is introduced as an intermediary substance to fill the regions where special pixels replace normal pixels. This resin layer acts as a placeholder that maintains the structural integrity and desired shape of the color filter array during manufacturing, preventing color filter deformation while allowing special pixels to perform their detection functions.
Solution Approach 2:
The patent applies different properties to different regions of the pixel array: normal pixels are equipped with color filters for color imaging, while special pixels are filled with transparent resin that allows specific wavelengths (such as infrared) to pass through. This local differentiation enables both color imaging and special detection functions to coexist without interfering with each other's manufacturing precision.
2Adaptability or versatility
If special pixels replace normal pixels, then the imaging device gains specialized detection functions, but the light receiving sensitivity of normal pixels fluctuates due to irregular color filter formation
Solution Approach 1:
The transparent resin layer serves as a mediator that fills the gaps created by special pixel insertion. By occupying these regions, the resin prevents adjacent color filters from deforming or shifting, thereby maintaining consistent light receiving sensitivity for normal pixels while allowing special pixels to perform their specialized detection functions.
Solution Approach 2:
The transparent resin layer provides a uniform filling material across all special pixel regions, creating a homogeneous structure that maintains consistent optical properties throughout the pixel array. This homogeneity ensures that normal pixels experience uniform light reception conditions, preventing sensitivity fluctuations.
Data Source
AI summary
An imaging device according to the present disclosure includes the plurality of normal pixels arranged in a matrix, the special pixel arranged by replacing a part of the normal pixels, the color filter corresponding to the normal pixels and arranged according to a predetermined rule, the special filter arranged corresponding to the special pixel, and the special pixel color filter arranged to surround at least a part of the periphery of the special filter.