Display Luminance Correction for Boundary Seam Reduction
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Solution Overview
Problem
Display devices with multiple panels suffer from visibility issues due to luminance discrepancies at the boundary areas between panels, leading to non-uniform image display and noticeable seams.
Innovation Solution
A display device with a luminance correction unit that includes an image mapping unit, a de-blurring unit, and a correction unit to calculate and apply correction grayscale values to pixels adjacent to the boundary areas, adjusting their luminance to match the surrounding pixels, thereby reducing the visibility of the boundary areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display panels are arranged adjacent to each other, then the display area is increased, but the visibility of boundary areas between panels increases
Solution Approach 1:
The patent applies local quality by identifying pixels adjacent to boundary areas as a distinct region requiring special treatment. The luminance correction unit specifically targets second pixels (adjacent to boundaries) with different correction grayscale values compared to first pixels (not adjacent to boundaries), creating location-dependent display characteristics that eliminate the harmful boundary visibility effect while preserving the multi-panel display area.
2Stability of the object's composition
If correction grayscale values are applied to pixels adjacent to boundary areas, then luminance uniformity is improved, but device complexity increases
Solution Approach 1:
The patent segments the pixel population into two distinct groups: first pixels (not adjacent to boundaries) and second pixels (adjacent to boundaries). This segmentation allows the luminance correction unit to apply different correction grayscale values to each group, achieving luminance uniformity across the display while managing complexity through a systematic classification approach rather than individual pixel-by-pixel correction.
Data Source
AI summary
A display device according to an embodiment includes a plurality of display panels arranged adjacent to each other and each display panel including first pixels in the display panel and second pixels in the display panel and adjacent to a boundary area of the display panels, and a luminance correction unit configured to generate a correction grayscale value for the second pixel. The luminance correction unit includes an image mapping unit configured to map a captured luminance image to a unit pixel image, a de-blurring unit configured to perform a de-blurring operation on the mapped unit pixel image to calculate a correction luminance value for the second pixel, and a correction unit configured to calculate a correction grayscale value for the second pixel corresponding to the calculated correction luminance value of the second pixel.