Gate Compensation Line System for Display Panel Uniformity
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Solution Overview
Problem
Specially shaped display panels face issues with uneven display due to differences in gate line lengths, leading to inconsistent charging and display uniformity.
Innovation Solution
The display panel incorporates a gate compensation line system, where shorter second gate lines are connected to a gate compensation line, which compensates for load differences between first and second gate lines, ensuring consistent charging across sub-pixel rows and improving display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If gate lines of different lengths are used in specially shaped display panels, then the display panel can achieve special shapes (circles, triangles, arcs), but display uniformity deteriorates due to inconsistent charging delays
Solution Approach 1:
The patent applies preliminary action by introducing gate compensation lines that are pre-configured with specific capacitance values to counterbalance the inherent delays caused by gate line length differences. The compensation lines are designed in advance with capacitance values calculated to match the delay characteristics of each gate line, so that when the gate driving signal is applied, the charging delays are automatically compensated before affecting the pixel electrodes. This preliminary compensation mechanism ensures uniform display across the entire specially shaped panel.
Solution Approach 2:
The patent changes the electrical parameter (capacitance) of the gate compensation lines to resolve the timing imbalance. By assigning different capacitance values to different gate compensation lines based on their corresponding gate line lengths, the system transforms the physical discrepancy in line lengths into a controllable electrical parameter that can be adjusted and optimized. This parameter change allows the system to maintain uniform charging delays across all pixel rows despite the varying gate line lengths required for special shapes.
2Manufacturing precision
If gate compensation lines are added to compensate for gate line length differences, then display uniformity is improved, but device complexity increases
Solution Approach 1:
The patent merges the gate compensation function with the existing gate line structure by integrating gate compensation lines that are electrically connected to the gate lines. Instead of creating entirely separate compensation circuits, the design combines the compensation capability into the gate driving architecture itself. The gate compensation lines are merged with the gate electrode structures, allowing the system to achieve uniform charging while maintaining a relatively streamlined overall structure that leverages existing components and processes.
3Use of energy by moving object
If inconsistent gate line lengths are used, then power consumption may be reduced in certain regions, but display unevenness occurs across the panel
Solution Approach 1:
The patent applies local quality by providing gate compensation specifically where needed - in the second display region where gate line length differences cause display unevenness. The gate compensation lines are selectively introduced in regions requiring compensation rather than uniformly across the entire panel. This localized approach addresses the display uniformity issue in specific areas while maintaining energy efficiency in regions where compensation is not required, optimizing both display quality and power consumption.
Data Source
AI summary
Provided are a display panel and a display apparatus. In an embodiment, the display panel includes first sub-pixel rows, first gate lines, second sub-pixel rows, and second gate lines. The first sub-pixel row includes sub-pixels arranged along a first direction and is electrically connected to the first gate line. The second sub-pixel row includes sub-pixels arranged along the first direction and is electrically connected to the second sub-pixel row. The second gate line extends along the first direction. A length of the second gate line is smaller than a length of the first gate line. The display panel further includes a gate compensation line electrically connected to the second gate line. The gate compensation line and the second gate line are arranged along the second direction. The gate compensation line and the second gate line are electrically connected to a same second sub-pixel row.