Organic Light-Emitting Display Substrate Staggered Pixel Arrangement
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Solution Overview
Problem
Organic light-emitting display devices suffer from unsatisfactory display quality due to serrated edges when displaying white patterns, resulting from the arrangement of sub-pixels in a Delta configuration where white light brightness centers form a fold line waveform.
Innovation Solution
The organic light-emitting display substrate is designed with sub-pixels arranged in a staggered manner, where each pixel unit comprises first, second, and third sub-pixels with white light brightness centers aligned on a straight line, utilizing a shape and size configuration that includes isosceles triangle connections and varying areas to improve edge smoothness and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If sub-pixels are arranged in a Delta configuration, then the display device achieves a compact pixel structure, but serrated edges appear when displaying white patterns
Solution Approach 1:
The patent changes the symmetric Delta configuration to an asymmetric linear arrangement where sub-pixels are positioned along a straight line. This asymmetric rearrangement eliminates the fold line waveform pattern that causes serrated edges, while maintaining the compact pixel structure through optimized sub-pixel spacing and positioning.
Solution Approach 2:
The patent transitions from a two-dimensional Delta triangular arrangement to a one-dimensional linear arrangement of sub-pixels. This dimensional change in the brightness center alignment eliminates the waveform pattern that causes serrated edges while preserving display compactness through the linear configuration.
2Quantity of substance
If sub-pixels are arranged to form equilateral triangles, then the pixel density is maximized, but the white light brightness centers form a fold line waveform
Solution Approach 1:
The patent segments the triangular pixel group into individually positioned sub-pixels arranged linearly. By separating the sub-pixels from the triangular configuration and positioning them along a straight line, the patent eliminates the fold line waveform while maintaining high pixel density through optimized spacing between the segmented sub-pixel elements.
Solution Approach 2:
The patent breaks the symmetric equilateral triangle arrangement by positioning sub-pixel brightness centers along an asymmetric straight line configuration. This asymmetric linear arrangement eliminates the waveform pattern while maintaining pixel density through optimized positioning of the individual sub-pixel elements.
3Ease of manufacture
If all sub-pixels have equal areas, then the manufacturing process is simplified, but the edge smoothness of white patterns deteriorates
Solution Approach 1:
The patent applies different area ratios to different sub-pixels within the linear arrangement. By assigning specific area proportions (e.g., 1:2:1 or 1:3:1) to adjacent sub-pixels, the patent locally optimizes the light emission distribution to eliminate serrated edges while maintaining overall manufacturing feasibility through the regularized linear configuration.
Solution Approach 2:
The patent changes the area parameter of sub-pixels from uniform equality to specific proportional relationships. By adjusting the area parameters of individual sub-pixels according to the linear arrangement (e.g., making central sub-pixels larger than adjacent ones), the patent improves edge smoothness while keeping the manufacturing process manageable through the systematic area ratio scheme.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively reduces serrated edges and enhances display quality by ensuring uniform distribution of white light brightness centers, improving the overall appearance of white patterns on the display device.
Implementation Method 1
each comprising a red sub-pixel, a green sub-pixel and a blue sub-pixel; red, green and blue organic light-emitting layers corresponding to the red sub-pixel, the green sub-pixel and the blue sub-pixel, respectively
Data Source
AI summary
The present disclosure relates to an organic light-emitting display substrate and a display device. The organic light-emitting display substrate includes a plurality of rows of sub-pixels, each of which includes first sub-pixels, second sub-pixels and third sub-pixels repeatedly arranged, and two adjacent rows of sub-pixels are arranged in a staggered manner, in every two adjacent rows of sub-pixels: a first sub-pixel in one row of sub-pixels and a second sub-pixel and a third sub-pixel that are adjacent to the first sub-pixel in the other row of sub-pixels, form a pixel unit, and white light brightness centers of the pixel units in a same row are located on a same straight line.