Display Subpixel Layout Using Asymmetric Quadrilaterals for High Resolution
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Solution Overview
Problem
Current OLED display devices face challenges in achieving high resolution due to limitations in the manufacture process of fine metal masks, which restrict the size of sub-pixels and overall display quality.
Innovation Solution
The arrangement of first, second, and third subpixels in a specific pattern on the display substrate, where the subpixels form alternating rows and columns, creating virtual quadrilaterals with controlled interior angles and distances between centers, allows for closer packing and improved resolution while maintaining a staggered arrangement to enhance manufacturing allowances and brightness distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sub-pixel size is reduced to increase display resolution, then the resolution is improved, but the manufacturing precision requirements for fine metal masks become excessively difficult to meet
Solution Approach 1:
The patent applies asymmetric arrangement of subpixels by creating virtual quadrilaterals with interior angles deviating from 90 degrees. The first and third subpixels are positioned at opposite vertices of these asymmetric virtual quadrilaterals, breaking the traditional symmetric grid arrangement. This asymmetric configuration allows for optimized spacing that reduces the burden on fine metal mask manufacturing precision while maintaining high display resolution.
Solution Approach 2:
The patent introduces a new dimensional parameter by controlling the interior angles of virtual quadrilaterals formed by subpixel arrangements. Instead of relying solely on reducing subpixel size in conventional dimensions, the invention utilizes angular relationships and diagonal spacing in alternative dimensions to achieve higher resolution. The distance parameters x and y along with angle control create a multi-dimensional optimization space that decouples resolution from direct subpixel size reduction.
2Measurement precision
If the sub-pixel size is reduced to increase display resolution, then the resolution is improved, but the manufacturing flexibility and allowances are reduced
Solution Approach 1:
By arranging subpixels in asymmetric virtual quadrilaterals with controlled interior angles rather than perfect squares, the patent creates manufacturing allowances through angular tolerance. This asymmetric geometry provides flexibility in the manufacturing process, as small variations in angle and position do not critically affect the final display quality, thereby maintaining ease of manufacture while achieving high resolution.
Solution Approach 2:
The patent changes the geometric parameters of subpixel arrangement by controlling interior angles of virtual quadrilaterals and optimizing distance parameters x and y. This parameter optimization allows for a balance between resolution and manufacturing flexibility, where the specific angle ranges and distance values provide both high resolution and sufficient manufacturing tolerance.
3Measurement precision
If the sub-pixel size is reduced to increase display resolution, then the resolution is improved, but the uniformity of brightness distribution becomes more difficult to maintain
Solution Approach 1:
The asymmetric virtual quadrilateral arrangement distributes subpixels in a pattern that optimizes brightness uniformity. By positioning the first subpixel at one vertex and the third subpixel at the opposite vertex of the virtual quadrilateral, with controlled interior angles, the invention creates a staggered arrangement that evens out brightness distribution across the display, preventing localized brightness variations that would occur with traditional symmetric arrangements.
Solution Approach 2:
The patent utilizes diagonal arrangements and angular relationships in alternative dimensions to optimize brightness distribution. The controlled interior angles of virtual quadrilaterals create optimal spacing patterns that ensure uniform light emission across the display, addressing brightness uniformity through geometric optimization in multiple dimensions rather than simple linear spacing.
Data Source
AI summary
A display substrate and a related device, and belongs to the field of display technology. The display substrate includes first subpixels, a second subpixels and third subpixels. In a first direction, the first subpixels and the third subpixels are arranged alternately to form a plurality of first subpixel rows, the second subpixels form a plurality of second subpixel rows, the first subpixel rows and the second subpixel rows are arranged alternately in a second direction, lines connecting centers of two first subpixels and two third subpixels in two adjacent rows and two adjacent columns form a first virtual quadrilateral, the two first subpixels are arranged at two opposite vertices of the first virtual quadrilateral, the first virtual quadrilateral includes an interior angle a not equal to 90°, and the second subpixel is arranged within the first virtual quadrilateral.