Pixel Array Antialiasing for Curved Display Edges
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Solution Overview
Problem
Electronic device displays with curved edges often exhibit jagged pixel layouts, leading to undesirable jagged edges in displayed images due to inactive border regions, which can result in visually unsmooth content along these edges.
Innovation Solution
Implementing a band of antialiasing pixels with selectively reduced strengths along the curved edges of the display, achieved by modifying drive transistor geometry, adding series resistances, or forming opaque light-blocking structures for organic light-emitting diode pixels, and varying electrode shapes and sizes for liquid crystal display pixels, to create a pattern of strengths that visually smooths the content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a standard pixel array is used with curved display edges, then the display can be manufactured with simple geometry, but the pixel layout becomes jagged and the displayed images have undesirable jagged edges
Solution Approach 1:
The patent applies local quality by differentiating pixel strengths within the pixel array. A band of pixels along the curved edge is assigned reduced strength values compared to full-strength pixels in the interior region. This local differentiation allows the curved edge to be displayed smoothly by visually blending the transition between active and inactive regions, eliminating jagged artifacts while maintaining the overall curved shape.
2Manufacturing precision
If antialiasing pixels with reduced strengths are implemented, then the jagged appearance is minimized and visual smoothness is improved, but the device complexity increases due to additional pixel strength control mechanisms
Solution Approach 1:
The patent implements parameter changes by modifying the strength parameter of specific pixels in the array. By varying the strength parameter (emission intensity) of pixels along the curved edge, the patent achieves visual smoothing of the display output. This approach changes the optical parameter of selected pixels to create an antialiasing effect that reduces jagged appearance while maintaining compatibility with standard display architectures.
Data Source
AI summary
An electronic device may have a housing and a display in the housing. The display may have one or more curved edges such as curved edges associated with rounded corners in the display and housing. The display may have an array of pixels. The display may include full-strength pixels and may have a band of antialiasing pixels having selectively reduced strengths to visually smooth content displayed along the curved edges. The pixels may be organic light-emitting diode pixels, liquid crystal display pixels, or other display pixels. Organic light-emitting diode pixels may have drive transistors and associated organic light-emitting diodes. Selectively elevated series or opaque light blocking structures of selectively reduced areas may be used to selectively reduce the strength of the antialiasing pixels. Liquid crystal display pixels may include electrodes of different shapes and/or opaque layer openings of different sizes to form antialiasing pixels in desired patterns.