Boundary Pixel Luminance Control for Curved Display Edges
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display panels with curved boundaries between display and non-display regions suffer from step differences due to polygonal pixel shapes, leading to deteriorated display quality as users recognize these differences.
Innovation Solution
A method determining pixel luminance by establishing a smoothing reference line between display and non-display regions, dividing boundary pixels into regions based on this line, calculating a smoothing rate, and adjusting luminance accordingly to prevent step differences, even with multiple curvatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a curved boundary is used between display region and non-display region, then display quality is improved, but step differences occur due to polygonal pixel shapes
Solution Approach 1:
The boundary between display and non-display regions is segmented into multiple boundary pixels, with each pixel individually processed based on its intersection with the curved boundary. This allows precise control of luminance at each segment to match the curved shape.
Solution Approach 2:
Different luminance characteristics are applied to different parts of the boundary. Specifically, boundary pixels are divided into first boundary pixels (fully or partially in non-display region) and second boundary pixels (fully in display region), with different luminance adjustment strategies applied to each type.
2Manufacturing precision
If luminance dimming is applied to boundary pixels, then step differences are prevented, but display brightness is reduced
Solution Approach 1:
Luminance dimming is applied selectively only to first boundary pixels that are fully or partially located in the non-display region, while second boundary pixels fully in the display region maintain normal luminance. This localized approach prevents step differences at the curved boundary while preserving overall display brightness.
3Device complexity
If simple luminance adjustment is used for boundary pixels, then processing complexity is reduced, but accuracy of boundary rendering is insufficient
Solution Approach 1:
The boundary rendering process is segmented into distinct steps: identifying the curved boundary, determining boundary pixels intersected by the boundary, classifying pixels into first and second types, and applying different luminance adjustments. This structured segmentation achieves high boundary rendering accuracy through systematic processing.
Solution Approach 2:
The luminance parameter of boundary pixels is dynamically changed based on their position relative to the curved boundary. First boundary pixels have their luminance reduced to match the non-display region, while second boundary pixels maintain original luminance, creating precise visual alignment with the curved boundary shape.
Data Source
AI summary
A method of determining a pixel luminance including determining a smoothing reference line between a display region and a non-display region in a display panel, determining a boundary pixel through which the smoothing reference line passes among pixels included in the display region, dividing the boundary pixel into a first pixel region directed toward the display region and a second pixel region directed toward the non-display region based on the smoothing reference line, calculating a smoothing rate corresponding to a ratio of an area of the first pixel region to a total area of the boundary pixel, and determining a dimming luminance of the boundary pixel based on the smoothing rate.