Nested Display Panels for High Contrast and Resolution
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Solution Overview
Problem
Current LCD technologies face challenges in achieving high contrast and resolution, particularly in Mini/Micro LED applications, where improving contrast and resolution without increasing processing complexity is essential.
Innovation Solution
A displaying device comprising a first display panel with sub-pixel units and a second display panel with higher pixel density on the light exiting side, where the second panel regulates transmittance based on grayscale values from the first panel, effectively increasing contrast and resolution through grayscale dimming and higher resolution imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single display panel is used to improve contrast, then the structure remains simple, but the contrast ratio cannot reach 250,000:1
Solution Approach 1:
The patent employs a nested structure where a second display panel is placed on the light exiting side of the first display panel. The second panel acts as a micro-curtain that can independently control light transmission for each pixel, while the first panel provides the base image. This nested arrangement enables the superposed contrast of 250,000:1 by combining the contrast capabilities of both panels without requiring a completely new display structure.
2Manufacturing precision
If pixel density is increased to improve resolution, then image quality improves, but processing complexity increases
Solution Approach 1:
The patent segments the display function into two independent panels: the first panel handles color display with standard pixel density, while the second panel provides high-density grayscale control for contrast management. This segmentation allows the system to achieve high effective resolution through the combined output without requiring either panel to process extremely high pixel densities independently, thus managing processing complexity more effectively.
Solution Approach 2:
The patent adds a dimensional layer by placing the second display panel on the light exiting side of the first panel, creating a stacked configuration. This vertical dimension allows the system to achieve high resolution and contrast by combining the output of two panels with different pixel densities, rather than relying on a single panel with extremely high pixel density that would increase processing complexity.
3Illumination intensity
If Mini/Micro LED technology is applied to improve contrast, then displaying effect improves, but local dimming processing complexity increases
Solution Approach 1:
The second display panel acts as an intermediary element between the light source and the viewer. It functions as a micro-curtain that can independently control light transmission for each pixel, enabling local dimming effects without requiring complex processing of the first panel. This intermediary layer simplifies the overall processing by handling the contrast control function separately from the color display function.
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 significantly enhances contrast and resolution by allowing the second display panel to refine the image output, achieving a superposed contrast of 250,000:1 and increasing pixel density without increasing processing difficulty.
Implementation Method 1
the second display panel regulates transmittance based on grayscale values from the first panel, effectively increasing contrast and resolution through grayscale dimming
Data Source
AI summary
A displaying device and a driving method thereof, wherein the displaying device includes a first display panel, a second display panel and a driving circuit; the first display panel includes a plurality of first pixel units that are able to display a color, wherein each of the first pixel units includes a plurality of sub-pixel units; and the second display panel is provided on a light exiting side of the first display panel, including a plurality of second pixel units; wherein a distribution density of the plurality of second pixel units is greater than a distribution density of the plurality of sub-pixel units.