Irregular Display Panel Notch Capacitance Compensation
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Solution Overview
Problem
Existing irregular-shaped display panels with notches suffer from poor display performance due to split screens and non-uniformity, as the coupling capacitance between data lines and common electrodes differs, leading to longitudinal split-screens and degraded display effects.
Innovation Solution
The display panel incorporates an irregular-shaped edge with recessed sub-edges forming notches, featuring irregular-shaped data lines with winding portions and a compensation electrode in the non-display area, which overlaps with the winding portion to equalize load and reduce capacitance differences between data lines, thereby enhancing display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a notch is disposed at the irregular-shaped display panel to mount camera, earpiece, sensor, then the display device can be diversified and applied to various products, but the display performance deteriorates and split screen occurs due to non-uniform coupling capacitance between data lines and common electrodes
Solution Approach 1:
The patent applies local quality by configuring different data line structures in different regions. Specifically, irregular-shaped data lines with winding portions are placed in the first sub-area adjacent to the notch, while regular data lines are used in other areas. This local differentiation compensates for the capacitance imbalance caused by the notch, maintaining display uniformity while preserving the diversified irregular-shaped display design.
Solution Approach 2:
The patent changes the physical parameters of data lines in specific regions by introducing winding portions that extend in the row direction. This parameter modification increases the coupling capacitance between irregular-shaped data lines and common electrodes in the first sub-area, balancing the capacitance values across different data lines and eliminating the split screen effect.
2Reliability
If irregular-shaped data lines are used in the first sub-area adjacent to the notch, then the coupling capacitance between data lines and common electrodes can be equalized, but the data line structure becomes more complex
Solution Approach 1:
The patent limits the complex irregular-shaped data line structure with winding portions only to the first sub-area adjacent to the notch, while other areas use simpler regular data lines. This localized application of complexity achieves capacitance equalization where needed without unnecessarily complicating the entire data line structure across the whole display panel.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design suppresses split-screens and improves display uniformity by equalizing the load of irregular-shaped and regular data lines, resulting in enhanced display performance and full-screen functionality.
Implementation Method 1
the coupling capacitance between data lines and common electrodes differs, leading to longitudinal split-screens
Data Source
AI summary
A display panel comprises a display area and a non-display area surrounding the display area. The display area includes gate lines extending in a row direction, data lines extending in a column direction, and an irregular-shaped edge. The irregular-shaped edge includes at least one sub-edge which is recessed towards an inside of the display area to form a notch, and edges of the irregular-shaped edge other than the at least one sub-edge extend in the column direction. The non-display area includes a first sub-area disposed adjacent to the at least one sub-edge. The data lines include at least one irregular-shaped data line, and the at least one irregular-shaped data line includes a winding portion disposed at the first sub-area. The first sub-area includes a compensation electrode, and in a direction perpendicular to the display panel, the compensation electrode is at least partially overlapped with the winding portion.