OLED Subpixel Layout for Smoother Diagonal Line Rendering
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Solution Overview
Problem
Conventional Pentile type subpixel arrangement structures in OLED display panels suffer from issues of granularity and jagged edges when displaying diagonal lines, particularly in low-resolution displays, due to wider minimum constituent pixel units along the diagonal.
Innovation Solution
A display panel design that tessellates the display area with a repeating pattern of first and second subpixel groups, each comprising subpixels of different colors arranged in a staggered manner, allowing for a more efficient use of subpixels and reducing the shift between adjacent pixel units along diagonal lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional Pentile type subpixel arrangement is used, then device complexity is reduced, but display precision deteriorates with granularity and jagged edges appearing
Solution Approach 1:
The patent applies asymmetry by arranging subpixels of different colors (first color, second color, third color) in an asymmetric staggered pattern rather than symmetric alignment. This asymmetric arrangement optimizes the distribution of subpixels along diagonal directions, reducing the width of minimum constituent pixel units and eliminating the jagged edge effect while maintaining manufacturing simplicity.
2Ease of manufacture
If subpixels are arranged in conventional patterns, then ease of manufacture is improved, but harmful factors increase due to granularity and jagged edges
Solution Approach 1:
The patent addresses the diagonal line display problem by introducing a staggered arrangement that effectively changes the spatial dimensionality of subpixel distribution. Instead of aligning subpixels in simple rows and columns, the staggered pattern offsets subpixels in alternating rows, creating a more uniform diagonal pixel unit width and eliminating jagged edges without complicating the manufacturing process.
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
The proposed subpixel arrangement enhances display resolution and smoothness, particularly for diagonal lines, while being compatible with both high and low-resolution displays, reducing granularity and jagged edges.
Implementation Method 1
an organic EL layer, which emits light by the principle of electroluminescence
Implementation Method 2
a color filter layer, which includes a red color filter, a green color filter, and a blue color filter
Data Source
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AI summary
A display panel having a display area tessellated by repetition of a first subpixel group (10). The display panel includes an array of a plurality of first subpixel groups(10). Each of the plurality of first subpixel groups includes a first subgroup and a second subgroup sequentially along a first direction. The first subgroup includes a first subpixel of a first color, a first subpixel of a second color, and a first subpixel of a third color, sequentially along a second direction, the second direction being different from the first direction. The second subgroup includes a second subpixel of the third color, a second subpixel of the second color, a second subpixel of the first color, a third subpixel of the third color, a third subpixel of the second color, and a third subpixel of the first color, sequentially along the second direction.