Variable-Width Bank Layout for High-Resolution Display Sub-Pixels
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Solution Overview
Problem
Existing display devices struggle to achieve high resolution due to limitations in the arrangement and design of sub-pixels and light emitting elements.
Innovation Solution
A display device design that includes a pair of first color sub-pixels arranged in a display area, each with at least one first color light emitting element, and a bank enclosing the sub-pixels with varying widths. The sub-pixels have emission areas of different shapes, such as triangular and inverted triangular, and are symmetrically arranged to maximize resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sub-pixels are arranged in a conventional rectangular pattern, then the structure is simple and easy to manufacture, but the resolution is limited due to wasted space
Solution Approach 1:
The patent applies asymmetry by using a bank with at least two areas having different widths instead of a uniform rectangular structure. The first area has a first width and the second area has a second width different from the first width, creating an asymmetric configuration that optimizes space utilization and achieves higher resolution while maintaining manufacturing feasibility
Solution Approach 2:
The bank structure implements local quality by having different width characteristics in different areas. The first area and second area of the bank have different widths to accommodate and optimize the arrangement of light emitting elements in specific regions, allowing each part of the structure to serve its optimal function for achieving high resolution
2Manufacturing precision
If the bank has uniform width, then the structure is simple to manufacture, but it cannot optimize the density of light emitting elements
Solution Approach 1:
The bank is designed with asymmetric width characteristics where the first area has a first width and the second area has a second width different from the first width. This asymmetric design optimizes the density of light emitting elements by providing different spatial configurations in different areas, while the overall structure remains manufacturable using conventional processes
3Manufacturing precision
If sub-pixels are closely arranged to increase resolution, then the resolution improves, but the manufacturing precision and alignment become more difficult
Solution Approach 1:
The bank structure provides local quality by creating distinct first and second areas with different widths, which serve as spatial organizers for light emitting elements. This localized structural differentiation facilitates precise positioning and alignment of sub-pixels in high-density arrangements, making manufacturing and alignment more manageable despite the close spacing required for high resolution
Data Source
AI summary
A display deice includes a pair of first color sub-pixels arranged in a display area in a first direction, each of the pair of first color sub-pixels including at least one first color light emitting element, and a bank enclosing the pair of first color sub-pixels. The bank includes at least two areas having different widths in an area corresponding to each of the pair of first color sub-pixels.