Display Sub-Pixel Asymmetry for Aperture Ratio and Color Balance
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Solution Overview
Problem
Existing display devices for mobile apparatuses face challenges in maintaining a high aperture ratio while increasing pixel density, often compromising color balance due to sub-pixel arrangements in two columns with different shapes.
Innovation Solution
A display device with a matrix arrangement of pixels, each comprising a first sub-pixel of the largest area, a second sub-pixel with a smaller area, and a third sub-pixel, all in the same column, allowing for equal displayable areas of different colors across pixels aligned in columns or rows, thereby maintaining color balance and aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sub-pixels are arranged in three columns with the same shape to increase pixel density, then pixel density is improved, but aperture ratio is reduced
Solution Approach 1:
The patent applies asymmetry by arranging sub-pixels in two columns with different shapes rather than three columns with identical shapes. Specifically, one column contains sub-pixels of a first shape while the other column contains sub-pixels of a second shape, allowing optimized light emission areas that maintain high aperture ratio while achieving increased pixel density
2Area of stationary object
If sub-pixels are arranged in two columns with different shapes to maintain aperture ratio, then aperture ratio is improved, but color balance is lost
Solution Approach 1:
The patent applies local quality by assigning different shapes to sub-pixels in different columns, where each column's sub-pixel shape is optimized for its specific color characteristics. The first column sub-pixels have a first shape optimized for their color, while the second column sub-pixels have a second shape optimized for their color, allowing each local region to have optimal light emission properties for color balance
3Stability of the object's composition
If sub-pixels have different areas to optimize color display, then color balance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the pixel array into distinct columns with different sub-pixel shapes. This segmentation allows independent optimization of each column's sub-pixel geometry for color balance, while the repetitive columnar structure maintains manufacturing simplicity through standardized fabrication processes for each column type
Data Source
AI summary
A display device includes a display unit in which pixels are arranged in a matrix. The pixels each include a first sub-pixel having the largest area among sub-pixels, a second sub-pixel adjacent to the first sub-pixel and having an area smaller than that of the first sub-pixel, and a third sub-pixel adjacent to the first and second sub-pixels, having an area smaller than that of the first sub-pixel, and arranged in the same column as that of second sub-pixels. First, second, and third pixels are aligned in at least one of a column direction or a row direction and each include the first, second, and third sub-pixels that can display different one of first, second, and third colors. Areas of the first, second, and third colors displayable by the first, second, and third pixels in total are equal to one another.