Display Panel Data-Line Layout for Parasitic Capacitance Balance
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Solution Overview
Problem
Inconsistent parasitic capacitances between data lines in display panels affect display effects, as the spacing between data lines is not uniformly managed, leading to varying capacitance values.
Innovation Solution
The display panel design includes specific arrangements of data lines and pads, where the second data line is located between the first and third data lines, with adjusted spacings and pad connections to ensure consistent parasitic capacitance by increasing the spacing between the first data line and the second data line and decreasing the spacing between the second and third data lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data lines are disposed at unequal intervals in the display area, then the layout flexibility is improved, but the parasitic capacitance consistency deteriorates
Solution Approach 1:
The patent applies local quality by creating different spacing relationships in different regions: in the display area, data lines are arranged with unequal intervals to optimize display performance, while in the binding area, the spacing is adjusted through pad positioning to ensure consistent parasitic capacitance. This local differentiation allows each region to optimize for its specific function.
Solution Approach 2:
The patent extends the spacing control to a third dimension by positioning pads at different locations in the binding area. By adjusting which pad connects to which data line and positioning pads strategically, the effective spacing between data lines is equalized in the binding area even though they remain unequally spaced in the display area.
2Reliability
If the spacing between data lines is adjusted to equalize parasitic capacitance, then the parasitic capacitance consistency is improved, but the layout complexity increases
Solution Approach 1:
The patent introduces pads as intermediary elements between data lines and the source driver chip. These pads serve as mediators that allow the data lines to maintain their optimal unequal spacing in the display area while achieving equalized parasitic capacitance in the binding area through strategic pad positioning and connection assignments.
3Area of stationary object
If data lines are arranged with unequal spacing, then the display area utilization is improved, but the parasitic capacitance variation increases
Solution Approach 1:
The patent segments the panel into two distinct functional areas: the display area where data lines are unequally spaced to optimize display performance and area utilization, and the binding area where pad positioning and connections are arranged to equalize parasitic capacitance. This segmentation allows each area to be optimized independently for its specific function.
Data Source
AI summary
The present application discloses a display panel in which a second data line in a display area is located between a first data line and a third data line, and a spacing between the first data line and the second data line is less than a spacing between the third data line and the second data line. A second pad is located between a first pad and a third pad in a direction perpendicular to the display area pointing to a binding area, the first pad is electrically connected to the first data line, the second pad is electrically connected to the third data line, and the third pad is electrically connected to the second data line.