Close Packing Display Panel Openings for High Opening Ratio
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Solution Overview
Problem
Existing organic EL displays with sparsely arranged reflectors face issues of increased power consumption and panel quality degradation due to decreased opening ratios, leading to potential burn-in problems.
Innovation Solution
A display panel design featuring a unit with openings arranged in a close packing manner, where a single virtual opening within the peripheral region connected to adjacent openings by straight lines minimizes arrangement loss, allowing for higher opening ratios and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If reflectors are sparsely arranged to improve light extraction, then luminance is improved, but opening ratio decreases causing increased power consumption and burn-in
Solution Approach 1:
The display panel is divided into multiple units, each unit containing multiple openings arranged in close packing manner. This segmentation allows light extraction functionality to be distributed across many small openings rather than relying on sparse large reflectors, thereby improving opening ratio while maintaining luminance enhancement capability
Solution Approach 2:
The patent transitions from two-dimensional sparse reflector arrangement to a structured multi-dimensional close packing arrangement of openings within units. By organizing openings in specific geometric patterns (triangular, hexagonal, or quadrangular arrangements) across multiple dimensions, the patent achieves higher opening ratios while maintaining effective light extraction in various directions
2Device complexity
If reflectors are sparsely arranged, then device complexity is reduced, but panel quality deteriorates due to burn-in
Solution Approach 1:
The panel is segmented into multiple units with standardized opening arrangements. This modular segmentation simplifies manufacturing while distributing stress and light extraction evenly across the panel, preventing localized burn-in and improving overall panel reliability
Solution Approach 2:
Each unit is designed with specific local opening arrangements (triangular, hexagonal, or quadrangular patterns) optimized for light extraction. This local optimization ensures uniform light distribution and prevents hot spots that could cause burn-in, thereby improving panel quality without requiring complex overall design
3Area of stationary object
If openings are arranged in close packing manner, then opening ratio is improved, but arrangement complexity increases
Solution Approach 1:
The complex close packing arrangement is segmented into repeating unit patterns. Each unit contains a standardized arrangement of openings that can be easily manufactured and replicated across the entire panel, reducing overall complexity while achieving high opening ratios through efficient space utilization
Solution Approach 2:
Multiple opening arrangements (triangular, hexagonal, quadrangular) are merged into a unified close packing framework within units. This integration achieves maximum space utilization and opening ratio while maintaining manufacturing simplicity through standardized unit designs that combine different geometric patterns
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration minimizes arrangement loss and enhances the opening ratio, reducing power consumption and preventing burn-in, while maintaining image quality.
Implementation Method 1
light that has been emitted from the organic EL devices in an oblique direction is reflected in the vertical direction by the reflectors
Data Source
AI summary
A display panel includes a unit for each sub-pixel, the unit including a plurality of openings, the unit having an array structure in which the openings are arranged in a close packing manner. In the array structure of the unit, when a single virtual opening is placed within a peripheral region of the unit, and a center of the virtual opening and centers of a plurality of openings located adjacent to the virtual opening are connected to one another by straight lines, only one basic figure for the arrangement in the close packing manner is created but two basic figures therefor are not created.