OLED Pixel Arrangement Curvature Aperture Ratio
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Solution Overview
Problem
Conventional OLED display panels have a low aperture ratio due to the large unused space between pixels, which leads to color drift and inefficient use of space, necessitating a solution to enhance pixel arrangement and aperture ratio.
Innovation Solution
A pixel arrangement structure with alternating rows of first, second, and third pixels, where each pixel type has a specific shape formed by concave and convex arcs, reducing unused space and preventing color drift, while maintaining a high aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional evaporation processes are used to form luminescent material layers with gaps between pixels, then color drift is prevented, but aperture ratio decreases due to large unused space
Solution Approach 1:
The patent applies curvature by designing pixel shapes with concave and convex arcs instead of straight lines. The second and third pixels include concave arcs facing adjacent first pixels and convex arcs facing opposite directions, creating a curved boundary that reduces unused space while maintaining color drift prevention through controlled gaps.
Solution Approach 2:
The patent employs asymmetry by creating different pixel shapes with specific concave and convex arc configurations. The second and third pixels have asymmetric designs with concave arcs oriented toward adjacent first pixels and convex arcs extending outward, optimizing space utilization while preserving functional gaps for color drift prevention.
2Reliability
If gaps are reserved between luminescent material layers of adjacent pixels, then color drift is prevented, but unused space increases reducing aperture ratio
Solution Approach 1:
The curved concave and convex arc designs allow the pixel boundaries to follow optimized paths that minimize unused space. The concave arcs create controlled gaps for color drift prevention while the convex arcs extend the pixel area into previously unused regions, reducing overall waste space.
Solution Approach 2:
The patent changes the geometric parameters of pixel shapes by introducing specific concave and convex arc configurations. This transforms the traditional rectangular or circular pixel shapes into optimized curved shapes that maintain necessary gaps for color drift prevention while minimizing unused space through altered boundary geometries.
Data Source
AI summary
A display panel includes a pixel arrangement structure. The pixel arrangement structure includes a plurality of first pixel rows and a plurality of second pixel rows arranged alternately. Each of the first pixel rows comprises a plurality of first pixels arranged at intervals, and each of the second pixel rows comprises a plurality of second pixels and a plurality of third pixels arranged alternately and at intervals. A shape of the first pixel comprises a shape formed by an arc. Each of the second pixel and the third pixel comprises a plurality of concave arcs and a plurality of convex arcs, the plurality of concave arcs and the plurality of convex arcs of the second pixel are alternately connected and form a closed figure, and the plurality of concave arcs and the plurality of convex arcs of the third pixel are alternately connected and form a closed figure.