Display Panel Compensation Circuit for Irregular-Shaped Areas
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Solution Overview
Problem
Irregular-shaped display panels experience uneven loading, leading to uneven display due to differences in signal line lengths and resistance-capacitance characteristics.
Innovation Solution
A display panel design incorporating an active area with first and second signal lines of different lengths and a compensation circuit featuring multiple compensation units connected to the second signal line, including switching transistors and capacitors, to mitigate uneven loading and improve display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If irregular-shaped area is introduced to diversify display panel shapes, then adaptability and versatility are improved, but loading uniformity deteriorates leading to uneven display
Solution Approach 1:
The patent applies local quality by introducing a compensation circuit specifically in the first active area adjacent to the irregular-shaped area, while the rest of the display panel maintains its original structure. This localized compensation approach addresses the loading non-uniformity problem in specific regions without requiring global structural changes, thereby maintaining display quality near the irregular-shaped area while preserving the overall shape diversity benefit
Solution Approach 2:
The compensation circuit performs preliminary anti-action by pre-compensating for the loading non-uniformity caused by the irregular-shaped area before it affects display quality. The compensation circuit counteracts the capacitive coupling effects and signal line length differences in advance, preventing uneven display from occurring in the regions adjacent to the irregular-shaped area
2Adaptability or versatility
If signal line lengths are made different to accommodate irregular-shaped area, then adaptability is improved, but manufacturing precision requirements worsen due to uneven loading
Solution Approach 1:
The patent applies parameter changes by modifying the electrical parameters (capacitance, resistance) through the compensation circuit to offset the physical parameter differences (signal line lengths) caused by the irregular-shaped area. The compensation circuit adjusts electrical characteristics to achieve uniform loading despite variations in signal line lengths, thereby reducing manufacturing precision requirements
3Stability of the object's composition
If compensation circuit is added to second signal line, then display uniformity is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the active area into a first active area and a second active area, and placing the compensation circuit only in the first active area where it is most needed (adjacent to the irregular-shaped area). This segmented approach provides display uniformity improvement where required while avoiding unnecessary complexity in regions that do not need compensation
Solution Approach 2:
The compensation circuit acts as an intermediary element between the gate driving circuit and the pixel electrodes in the first active area. It mediates the signal transmission by compensating for loading differences, thereby improving display uniformity without requiring fundamental changes to the overall circuit architecture
Data Source
AI summary
The present application discloses a display panel, the display panel includes an active area and a irregular-shaped area, the active area includes a first active area disposed at at least one side of the irregular-shaped area and a second active area connected with the first active area. The first signal line is disposed in the second active area, the second signal line is disposed in the first active area, the first signal line and the second signal line extend in a same direction, and the length of the first signal line is larger than the length of the second signal line, and at least one of a plurality of the compensation units is connected with the second signal line.