OLED Sub-pixel Arrangement for Light Transmittance
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Solution Overview
Problem
The increasing resolution of OLED displays leads to higher manufacturing costs and fabrication challenges, limiting the ability to achieve high-resolution image display while maintaining low power consumption and high light transmittance.
Innovation Solution
A sub-pixel arrangement structure for OLED displays where sub-pixels are arranged in inclined directions to form virtual quadrangles, allowing for adaptive placement of same-color sub-pixels to enlarge the emission area, thereby overcoming fabrication limitations and enhancing light transmittance and aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the resolution of the display panel is increased, then the visual resolution is improved, but the manufacturing cost is increased
Solution Approach 1:
The invention divides each pixel into multiple sub-pixels (red, green, blue, yellow) arranged in a specific pattern. This segmentation allows the display to achieve high visual resolution by utilizing human visual system characteristics while keeping the physical pixel count lower, thus reducing manufacturing costs while maintaining high perceived resolution.
Solution Approach 2:
The invention changes the color parameters by introducing yellow sub-pixels in addition to the traditional RGB sub-pixels. This parameter change in color composition enables more efficient use of the visible spectrum and allows for reduced pixel density while maintaining or improving visual resolution, thereby lowering manufacturing costs.
2Measurement precision
If the resolution of the display panel is increased, then the visual resolution is improved, but fabrication issues become more severe
Solution Approach 1:
By segmenting pixels into multiple sub-pixels with distinct color functions, the invention reduces the overall pixel density required for high visual resolution. This segmentation approach lowers the fabrication precision requirements compared to traditional high-RGB-density arrangements, making high-resolution displays more manufacturable.
Solution Approach 2:
The invention arranges sub-pixels in a two-dimensional pattern within each pixel unit, utilizing spatial dimensionality to maximize color output. This dimensional arrangement allows fewer physical pixels to achieve the same visual resolution, reducing fabrication precision demands.
3Measurement precision
If the size of sub-pixel is decreased, then the visual resolution is improved, but the light transmittance is reduced
Solution Approach 1:
The invention merges multiple sub-pixels (R, G, B, Y) within each pixel unit, creating a combined light output that is more efficient. The yellow sub-pixels particularly contribute to higher overall luminance by emitting in the yellow spectrum, compensating for the smaller individual sub-pixel sizes and maintaining high light transmittance while achieving improved visual resolution.
Solution Approach 2:
The invention uses a composite arrangement of different colored sub-pixels (R, G, B, Y) within each pixel, creating a composite light emission system. This composite structure maximizes the use of available light spectrum and improves overall light transmittance efficiency even when individual sub-pixel dimensions are reduced for higher resolution.
4Measurement precision
If the size of sub-pixel is decreased, then the visual resolution is improved, but the aperture ratio is reduced
Solution Approach 1:
By combining multiple sub-pixels (R, G, B, Y) within each pixel unit and optimizing their spatial arrangement, the invention increases the effective light-emitting area. The yellow sub-pixels are strategically positioned to maximize aperture ratio while maintaining small individual sub-pixel sizes, enabling high visual resolution without sacrificing overall pixel aperture.
Data Source
AI summary
A sub-pixel arrangement structure of an organic light emitting diode display including a plurality of sub-pixels is provided. The plurality of sub-pixels are arranged in a first direction and a second direction to form a sub-pixel array. The first direction is inclined at a first angle relative to a reference direction, and the second direction is inclined at a second angle relative to the reference direction. Each four sub-pixels of the plurality of sub-pixels form a virtual quadrangle. The each four sub-pixels include two sub-pixels having a same color, and the two sub-pixels having the same color are arranged at adjacent vertexes of the virtual quadrangle in one of the first direction and the second direction.