Sub-Pixel Circuit Layout With Intermediate Member Against Crosstalk
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Solution Overview
Problem
Existing display devices face issues with signal crosstalk leading to degraded display quality, necessitating improved reliability and high-resolution characteristics.
Innovation Solution
A display device design featuring a substrate with sub-pixels having adjacent first and second sub-pixel circuits, each with driving and switching transistors, and an intermediate member extending in a different direction, along with conductive layers and connection lines to enhance signal reliability and reduce crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sub-pixel circuits are arranged adjacent to each other to increase display resolution, then display resolution is improved, but electrical signal crosstalk increases
Solution Approach 1:
The patent introduces an intermediate member positioned between the first node portion and the second node portion in the pixel circuit. This intermediate member acts as a mediator that prevents direct electrical coupling between adjacent sub-pixel circuits, thereby reducing crosstalk while maintaining the high-resolution display configuration where sub-pixels are arranged adjacent to each other
2Productivity
If driving transistors and switching transistors are arranged in specific patterns to optimize circuit functionality, then circuit performance is improved, but signal interference between adjacent circuits increases
Solution Approach 1:
The patent segments the node portions into distinct first node portions and second node portions, with the intermediate member dividing the space between them. This segmentation isolates the electrical paths of adjacent sub-pixel circuits, preventing signal interference while maintaining efficient circuit operation through proper transistor arrangement
3Reliability
If conductive layers and connection lines are added to improve electrical connectivity, then signal transmission is improved, but device complexity increases
Solution Approach 1:
The patent merges the intermediate member with existing conductive structures in the pixel circuit, integrating it into the conductive layers rather than adding it as a completely separate element. This merging approach improves electrical connectivity and reduces crosstalk while minimizing the increase in device complexity by utilizing existing conductive pathways
Data Source
AI summary
A display device and an electronic device including the same are provided, and the display device may include a substrate, sub-pixels having first and second sub-pixels adjacent to each other, a pixel-circuit layer including a sub-pixel circuit including a first sub-pixel circuit in the first sub-pixel and a second sub-pixel circuit in the second sub-pixel above the substrate, and the first and second sub-pixel circuits including a driving transistor, and a switching transistor having a first electrode electrically connected to a gate electrode of the driving transistor through a first node portion, and a second electrode electrically connected to a data line through a second node portion, and an intermediate member between the first node portion of the first sub-pixel circuit and the second node portion of the second sub-pixel circuit in plan view, and a light-emitting element above the pixel-circuit layer, and electrically connected to the sub-pixel circuit.