Pixel Arrangement Structure for High-Resolution Displays
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Solution Overview
Problem
Existing pixel structures in display devices, such as OLEDs and QLEDs, are limited by the size constraints of evaporation and inkjet printing methods, which restrict the size and arrangement of sub-pixels, affecting resolution and chromaticity uniformity.
Innovation Solution
A pixel arrangement structure with alternately arranged first and second pixel units, each comprising nine zones forming a 3x3 array, allowing for larger sub-pixel combinations and improved light emission evenness, using a combination of evaporation and inkjet printing methods to form light-emitting layers and bank layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If evaporation method is used to form sub-pixels, then production efficiency is improved, but sub-pixel size is limited by mask plate opening size
Solution Approach 1:
The pixel unit is divided into multiple zones (first zone, second zone, third zone, fourth zone) with different sub-pixel arrangements. Each zone can have different sub-pixel configurations, allowing the mask plate to serve multiple functions and form different sub-pixel patterns in different regions, thereby increasing sub-pixel size while maintaining production efficiency
Solution Approach 2:
The patent transitions from traditional single-color-sub-pixel-per-zone arrangement to multi-color-sub-pixel-combinations-per-pixel-unit arrangement. By organizing sub-pixels of different colors (red, green, blue) in specific spatial patterns across multiple zones, the effective sub-pixel size is increased while maintaining the evaporation method's efficiency
2Length of moving object
If inkjet printing method is used to form sub-pixels, then flexibility in sub-pixel size is improved, but production efficiency deteriorates
Solution Approach 1:
The pixel unit is segmented into multiple zones with different sub-pixel arrangements. This segmentation allows the use of evaporation method for forming light-emitting layers in certain zones while maintaining flexibility in sub-pixel size configuration, thereby improving both production efficiency and sub-pixel size flexibility
Solution Approach 2:
Different zones within the pixel unit have different sub-pixel configurations and can use different formation methods. This local differentiation allows optimization of each zone's characteristics, combining the efficiency of evaporation method with the flexibility of varied sub-pixel sizes
3Device complexity
If traditional RGB arrangement is used, then device complexity is reduced, but display resolution deteriorates
Solution Approach 1:
Each pixel unit is divided into multiple zones (first, second, third, fourth zones) with different sub-pixel arrangements. This segmentation allows for more sophisticated light emission patterns and higher effective resolution while maintaining manageable structural complexity through systematic zone organization
Solution Approach 2:
The patent moves beyond simple RGB alternation to multi-zone arrangements where each zone contributes differently to the overall pixel output. This dimensional expansion in spatial organization enables higher display resolution by creating more effective light-emitting regions within each pixel unit
4Stability of the object's composition
If sub-pixel size is increased to improve light emission evenness, then chromaticity uniformity is improved, but manufacturing precision requirements increase
Solution Approach 1:
By dividing the pixel unit into multiple zones with different sub-pixel arrangements, the patent achieves larger effective sub-pixel sizes that improve light emission evenness and chromaticity uniformity. The segmented structure allows each zone to contribute to overall uniformity while the systematic arrangement keeps manufacturing precision requirements manageable
Solution Approach 2:
Multiple sub-pixels of different colors are combined within each pixel unit across different zones. This merging approach creates larger effective light-emitting areas that improve chromaticity uniformity while the organized combination maintains reasonable manufacturing precision requirements
Data Source
AI summary
This disclosure provides a pixel arrangement structure, a pixel structure and a production method thereof, an array substrate, and a display panel. The pixel arrangement structure comprises: a plurality of first pixel units and second pixel units which are arranged alternately in both of row direction and column direction; wherein each of the pixel units comprises nine zones forming an array of three rows by three columns, and there are first, second, and third sub-pixels, first and second retention regions, and an optional fourth sub-pixel in these zones, respectively.