Curved-Boundary Display Panel Aperture Layout for Sawtooth Reduction
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Solution Overview
Problem
Medium-and-large-sized circular or arc-shaped display screens often suffer from visually noticeable sawtooth and color stripes due to the edge of the display region, affecting display quality and user experience.
Innovation Solution
A display panel design featuring a display region with a curve boundary, comprising a plurality of pixels arranged in an array, where the pixels include first, second, and third types, each with specific sub-pixel opening regions and aperture ratios, allowing for gradual transition of aperture ratios and gray scales to minimize brightness differences and sawtooth effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If sub-pixels are arranged in a regular rectangular pattern, then manufacturing is simple and resolution is high, but curved or circular edges produce visible sawtooth artifacts and color stripes
Solution Approach 1:
The patent applies different aperture ratios to sub-pixels based on their location: sub-pixels near the curved boundary have smaller aperture ratios while those in the center have larger aperture ratios. This local differentiation compensates for the uneven light distribution caused by the curved shape, reducing visible artifacts and color stripes at the edges.
Solution Approach 2:
The patent changes the aperture ratio parameter of sub-pixels according to their position in the display region. By adjusting this physical parameter locally, the patent optimizes light emission uniformity across the curved display area, eliminating the sawtooth effect and color stripe artifacts that would otherwise appear at curved edges.
2Object-generated harmful factors
If sub-pixel opening regions are reduced in area, then color stripe visibility is reduced, but brightness uniformity becomes more difficult to maintain
Solution Approach 1:
The patent implements local quality by setting different aperture ratios for sub-pixels at different positions. Sub-pixels near the curved boundary use smaller aperture ratios to reduce color stripe visibility, while sub-pixels in the center maintain larger aperture ratios to ensure sufficient brightness, thereby achieving both goals simultaneously through spatially differentiated design.
Data Source
AI summary
A display panel and a display device are disclosed. The display panel includes: first pixels, second pixels and first pixel groups; each first pixel group includes a third pixel, and each first pixel includes a first sub-pixel opening region; each second pixel includes a second sub-pixel opening region; each third pixel includes a third sub-pixel opening region; a first ratio of an area of the first sub-pixel opening region to an area of a sub-pixel corresponding to the first sub-pixel opening region in a display region is less than a second ratio of an area of the second sub-pixel opening region to an area of a sub-pixel in the second pixel; a third ratio of an area of the third sub-pixel opening region to an area of a sub-pixel in the third pixel is not less than the first ratio; and the third ratio is less than the second ratio.