Segmented Pixel Light-Shielding Structure for Low Signal Crosstalk
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Solution Overview
Problem
The presence of a light-shielding layer in pixel structures causes crosstalk issues between different signals, leading to image quality degradation and color distortion.
Innovation Solution
The light-shielding layer is divided into multiple separated portions, including semiconductor, data line, and scan line light-shielding portions, ensuring they do not overlap with other signal lines, thereby reducing crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light-shielding layer is provided in the pixel structure, then the contrast ratio is enhanced, but crosstalk problems between different signals occur
Solution Approach 1:
The light-shielding layer is divided into multiple separated portions including a semiconductor layer light-shielding portion, a first data line light-shielding portion, a second data line light-shielding portion, and a third data line light-shielding portion. These portions are spatially separated to prevent signal interference while collectively providing light shielding to enhance contrast ratio.
2Object-generated harmful factors
If the light-shielding layer is divided into multiple separated portions, then crosstalk is reduced, but the structural complexity increases
Solution Approach 1:
The light-shielding layer is segmented into functionally distinct portions positioned at different locations to shield different signal lines. This segmentation reduces crosstalk by isolating electromagnetic fields while the segments are integrated into a unified pixel structure to manage complexity.
Solution Approach 2:
Different portions of the light-shielding layer are positioned to provide localized shielding for specific signal lines (semiconductor layer, data lines). Each portion has a specific function and position optimized for its local shielding requirement, reducing overall crosstalk while maintaining structural integration.
Data Source
AI summary
A pixel structure includes a substrate, a light-shielding layer, a first insulating layer, a semiconductor layer, a second insulating layer, a first conductive layer, a third insulating layer, and a second conductive layer. By dividing the light-shielding layer into a plurality of separated portions, crosstalk between different signals can be reduced.