Pixel Arrangement Structure for High PPI OLED Displays
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Solution Overview
Problem
The existing OLED display technology faces challenges in achieving high pixel density and resolution due to difficulties in forming high-density, small-area organic resin patterns, which restricts the improvement of display image quality and resolution.
Innovation Solution
A pixel arrangement structure is introduced where pixel units include first and second sub-pixels arranged horizontally and third sub-pixels arranged longitudinally, allowing for pixel sharing within sampling areas on the display substrate to enhance image continuity and increase pixels per inch (PPI), thereby improving display resolution and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If three sub-pixels (R, G, B) are configured to constitute one pixel in a matrix arrangement, then the physical resolution matches the visual resolution, but the PPI cannot be increased to improve display quality and image vividness
Solution Approach 1:
The patent segments the traditional pixel structure by dividing sub-pixels into multiple types (first sub-pixels, second sub-pixels, third sub-pixels) with different functions. First sub-pixels display normal images, second sub-pixels share images from adjacent pixels, and third sub-pixels provide additional color information. This segmentation allows the display to achieve higher PPI without requiring proportionally smaller individual sub-pixels, making the manufacturing process more feasible.
Solution Approach 2:
The patent implements pixel sharing functionality where certain sub-pixels (second sub-pixels) can display images from adjacent pixels, making them multi-functional. This allows a single physical pixel to serve multiple display purposes, effectively increasing the PPI and display quality without proportionally decreasing the size of each sub-pixel, thus avoiding excessive manufacturing complexity.
2Manufacturing precision
If the number of pixels per inch is increased to improve display quality, then the image becomes more vivid and delicate, but the organic resin pattern formation becomes more difficult and costly
Solution Approach 1:
The patent merges the functionality of multiple physical pixels into a single logical pixel unit. By combining first sub-pixels, second sub-pixels, and third sub-pixels in a shared pixel structure, the display achieves higher PPI equivalent performance without physically creating that many small organic resin patterns, thereby reducing manufacturing difficulty and cost.
Solution Approach 2:
The patent introduces a new dimension of pixel organization by arranging sub-pixels in a multi-row structure (first row, second row, third row, fourth row) with different functional assignments. This dimensional reorganization allows for more efficient use of physical pixels to achieve higher PPI without proportionally increasing manufacturing complexity.
3Quantity of substance
If sub-pixels are arranged in a traditional matrix to maintain simple manufacturing, then the pixel density is limited, but complex arrangements increase manufacturing difficulty
Solution Approach 1:
The patent implements dynamic pixel sharing control where second sub-pixels can selectively display images from adjacent pixels based on control signals. This dynamic functionality allows the display to adaptively increase pixel density in different regions or conditions without requiring a completely complex static physical arrangement, balancing pixel density improvement with manageable device complexity.
Data Source
AI summary
A pixel arrangement structure according to the present disclosure may include pixel units parallel to each other. The pixel units each includes a plurality of first pixels and second pixels spaced from each other. The first pixels each include a first sub-pixel located in a first row, a second sub-pixel located in a second row, and a third sub-pixel located in third and fourth rows. The second pixels each include a third sub-pixel located in the first and second rows, a first sub-pixel located in the third row, and a second sub-pixel located in the fourth row. The first sub-pixels and second sub-pixels are arranged horizontally, while the third sub-pixels are arranged longitudinally.