Transparent OLED Display Holes for Diffraction Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Transparent OLED displays with holes for allowing light transmission suffer from diffraction effects, resulting in blurry or poor-quality transmissive images due to the shape and arrangement of these holes.
Innovation Solution
The display features non-quadrilateral-shaped holes with specific area-to-perimeter ratios, arranged in a staggered manner to minimize edge diffraction, allowing for clearer transmissive images by disrupting fixed spatial frequencies and reducing diffraction effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If holes are formed on the transparent display panel to allow light transmission, then light transmission capability is improved, but diffraction effect occurs causing blurry transmissive images
Solution Approach 1:
The patent applies asymmetry by using non-quadrilateral-shaped holes (such as circular, triangular, or polygonal shapes with odd numbers of sides) instead of conventional rectangular or square holes. This asymmetric shape design disrupts the fixed spatial frequency patterns that cause diffraction effects, thereby reducing edge diffraction and improving image clarity while maintaining light transmission capability.
Solution Approach 2:
The patent changes the geometric parameters of the holes by specifying that the ratio of hole area to perimeter squared should be within a specific range (0.05-0.20). This parameter optimization allows sufficient light transmission area while controlling the perimeter length to minimize diffraction effects, thus resolving the contradiction between light transmission and image clarity.
2Device complexity
If holes are arranged in regular patterns to maintain structural simplicity, then device complexity is reduced, but fixed spatial frequencies are created increasing diffraction effects
Solution Approach 1:
The patent introduces asymmetry in the hole arrangement by using staggered arrangements where holes in adjacent rows are horizontally offset. This asymmetric positioning disrupts fixed spatial frequency patterns that would otherwise be created by regular grid arrangements, reducing diffraction effects while maintaining relatively simple manufacturing processes.
Solution Approach 2:
The patent addresses the diffraction problem by introducing a staggered arrangement in the vertical dimension, where holes in adjacent rows are offset horizontally. This dimensional approach creates a more complex spatial distribution that disrupts fixed spatial frequencies without significantly increasing manufacturing complexity, as it builds upon the basic grid structure with an additional offset parameter.
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 enhances light transmission efficiency and image clarity by reducing edge diffraction, enabling users to observe clear transmissive images through the display while maintaining sufficient hole areas for image formation.
Implementation Method 1
aforesaid holes may also lead to diffraction effect when outside light pass through the holes
Data Source
AI summary
A display including a plurality of display units and a plurality of holes is provided. Each of the display units includes a transparent area. Each of the holes is formed by a part of the transparent areas. At least one of the holes satisfies2πA≤S<833A,wherein A is an area of each of the holes and the S is a perimeter of each of the holes, and the at least one of the holes is a hole of a non-quadrilateral-type shape. These holes are arranged along a first direction in staggered arrangement, parts of projections of the holes along a second direction are overlapped with one another, and the first direction is different from the second direction.