Display Device Data Line Segmentation for Parasitic Capacitance Reduction
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Solution Overview
Problem
In display devices, parasitic capacitance between adjacent data lines can cause interference, affecting the emission of light and image formation.
Innovation Solution
The display device is designed with subpixels arranged in a specific configuration, where data lines are positioned on opposing sides of the subpixels, and scanning lines are perpendicular to these data lines, reducing parasitic capacitance by optimizing the layout of wiring and transistor connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If data lines are arranged adjacent to each other to connect multiple subpixels, then the device complexity is reduced and manufacturing is simplified, but parasitic capacitance between adjacent data lines increases causing interference
Solution Approach 1:
The data lines are segmented into first and second data lines positioned on opposite sides of the subpixel column, separating the current paths to reduce parasitic capacitance while maintaining connectivity to multiple subpixels
Solution Approach 2:
The data lines are arranged in the first direction (horizontal) rather than stacked in the second direction (vertical), utilizing the lateral dimension to separate conductors and reduce capacitive coupling
2Speed
If data lines are positioned close to subpixels for efficient signal delivery, then the speed of signal transmission is improved, but parasitic capacitance interference increases
Solution Approach 1:
Signal paths are segmented into separate first and second data lines on opposite sides, allowing each line to maintain close proximity to its target subpixels while avoiding interference with other data lines
3Object-affected harmful factors
If wiring is optimized to reduce parasitic capacitance by positioning data lines on opposing sides, then interference is reduced, but the device complexity increases
Solution Approach 1:
The wiring configuration uses asymmetric positioning of data lines on opposite sides of the subpixel column rather than symmetric arrangements, reducing parasitic capacitance while maintaining manufacturing feasibility through standardized patterns
Data Source
AI summary
A display device includes at least two subpixels arranged in a first direction, a first data line connected to a first subpixel of the two subpixels, and a second data line connected to a second subpixel of the two subpixels. The first data line is arranged at a first side of the two subpixels and the second data line is arranged at a second side of the two subpixels. The first and second sides are opposing sides relative to the first and second subpixels.