Transparent Display Subpixel Arrangement for Resolution Transmittance Trade-off
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Solution Overview
Problem
Transparent display devices face a trade-off between high resolution and transmittance, with increased transmissive areas leading to reduced resolution and visible intervals between subpixels, which degrades picture quality.
Innovation Solution
A transparent display device design featuring a specific arrangement of signal lines and pixels, where transmissive areas are optimized to increase size and improve transmittance while maintaining high resolution, and the positions and shapes of subpixels are varied to prevent visible intervals, using a combination of first and second signal lines and non-transmissive areas to enhance light emission efficiency and reduce non-emission areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transmissive area is increased to improve transmittance, then light transmittance is improved, but resolution is deteriorated due to larger intervals between subpixels
Solution Approach 1:
The display area is divided into multiple transmissive areas separated by non-transmissive areas. Each transmissive area contains subpixels arranged to maintain high resolution while the non-transmissive areas provide structural support and electrical connections. This segmentation allows different regions to serve different functions - transmissive regions for light passage and non-transmissive regions for pixel definition.
Solution Approach 2:
Different areas of the display have different optical properties. Transmissive areas are optimized for light transmission with minimal obstruction, while non-transmissive areas are optimized for pixel definition and electrical connectivity. This local differentiation allows the overall device to achieve both high transmittance and high resolution by allowing each local region to excel at its specific function.
2Illumination intensity
If the spaced distance between subpixels is increased to accommodate transmissive area, then transmittance is improved, but picture quality is degraded due to visible intervals between subpixels
Solution Approach 1:
The arrangement of subpixels in adjacent pixels is made asymmetric. Specifically, the position of subpixels in a first pixel differs from the position of subpixels in a second pixel adjacent to it. This asymmetric arrangement prevents the formation of regular, visible intervals between subpixels across the display, thereby maintaining picture quality while allowing increased spacing for transmissive areas.
Solution Approach 2:
Instead of maintaining uniform subpixel positions across all pixels (which would create visible intervals), the patent inverts the approach by deliberately varying subpixel positions between adjacent pixels. This inversion of the conventional uniform arrangement prevents interval visibility while preserving overall image quality.
3Manufacturing precision
If resolution is increased to improve picture quality, then definition of picture quality is improved, but transmittance is reduced due to smaller transmissive areas
Solution Approach 1:
The patent resolves the two-dimensional trade-off between resolution and transmittance by introducing a third dimension - the vertical arrangement of multiple transmissive areas stacked in different rows. By organizing transmissive areas across multiple rows with alternating patterns, the device achieves high resolution in the horizontal direction while maintaining substantial total transmissive area across the vertical dimension.
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
The solution improves transmittance and maintains high resolution, preventing visible intervals between subpixels and enhancing picture quality by optimizing the arrangement of signal lines and subpixels, thereby achieving optimal picture quality and readability.
Implementation Method 1
a first subpixel emitting light of a first color, a second subpixel emitting light of a second color, and a third subpixel emitting light of a third color
Data Source
AI summary
A transparent display device may have high transmittance and at the same time embody high resolution. Moreover, the transparent display device may provide optimal picture quality. The transparent display device comprises a plurality of first signal lines extended in a first direction and disposed to be spaced apart from one another, a plurality of second signal lines extended in a second direction and disposed to be spaced apart from one another, a transmissive area provided between two first signal lines adjacent to each other and two second signal lines adjacent to each other, and a pixel disposed in an intersection or overlapping area where the first signal line and the second signal line cross or overlap each other, including a first subpixel emitting light of a first color, a second subpixel emitting light of a second color, and a third subpixel emitting light of a third color. The pixel includes a first pixel overlapped with a part of the first signal line of an odd row and a second pixel overlapped with a part of the first signal line of an even row, and the first pixel and the second pixel are different from each other in a position of at least one of the first subpixel, the second subpixel or the third subpixel.