Display Panel Attenuation Zones for Smooth Arc Edges
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Solution Overview
Problem
Existing display technologies result in unsmooth brightness transitions between non-rectangular and normal display areas, leading to poor display effects due to zigzag phenomena at the edges of non-rectangular display areas.
Innovation Solution
A display panel design with auxiliary display areas and sector-shaped regions, where the brightness of pixels is gradually attenuated from the center of a circle towards the curved sub-edges, with varying widths of attenuation transition zones to minimize brightness variation and smooth out edge transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a brightness attenuation area is provided in the non-rectangular display area to eliminate zigzag phenomenon, then the edge shape is improved, but unsmooth brightness transition appears at the boundary between non-rectangular and normal display areas
Solution Approach 1:
The non-rectangular display area is divided into multiple sector-shaped regions, each corresponding to a curved sub-edge. This segmentation allows independent brightness control in different zones, enabling the edge to achieve ideal arc shape while managing brightness transitions separately in each sector to avoid unsmooth boundaries.
Solution Approach 2:
Different brightness attenuation strategies are applied to different regions: sector-shaped regions near curved edges use gradual brightness attenuation to eliminate zigzag phenomena, while regions near boundaries between non-rectangular and normal display areas use reduced attenuation width to maintain smooth brightness transitions. This localized quality adjustment resolves the contradiction between edge shape and brightness smoothness.
2Shape
If brightness of pixels is gradually attenuated in a brightness attenuation area, then zigzag phenomenon is eliminated, but brightness variation increases at boundaries
Solution Approach 1:
The brightness attenuation width is adjusted locally based on position: sector-shaped regions have larger attenuation widths to eliminate zigzag phenomena, while regions adjacent to boundaries between non-rectangular and normal display areas have smaller attenuation widths to reduce brightness variation. This local differentiation resolves the contradiction between arc shape smoothness and brightness variation.
Solution Approach 2:
Instead of applying uniform brightness attenuation across the entire non-rectangular display area, the patent applies partial attenuation only where needed (in sector-shaped regions near curved edges) and reduces or eliminates attenuation near boundaries. This partial action approach achieves zigzag elimination without excessive brightness variation at boundaries.
Data Source
AI summary
A display panel, a driving method, and a display device are provided. The display panel includes display area including main display area and auxiliary display area. Auxiliary display area has a smaller length than the main display area in row direction. Each auxiliary display area includes first display area, and non-rectangular display area having curved edge. First boundary is between each non-rectangular display area and first display area. Second boundary is between each non-rectangular display area and main display area. Each sector-shaped region has a vertex that is a center of circle corresponding to curved edge. Each sector-shaped region has attenuation transition zone having smaller width than radius of sector-shaped region. Width of attenuation transition zone adjacent to first boundary and width of attenuation transition zone adjacent to second boundary are smaller than width of attenuation transition zone of other sector-shaped regions.