Transparent Display Panel with Pixelated Electrochromic Black State
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Solution Overview
Problem
Conventional transparent LED display devices cannot achieve a black display state, limiting their ability to enhance contrast ratio and image display effect, especially under low gray scale conditions.
Innovation Solution
A display panel comprising a transparent pixel layer and a pixelated electrochromic layer, where the electrochromic regions can be switched between a transparent and black state, ensuring each pixel can display black while blocking ambient light, thereby enhancing contrast ratio and image display effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transparent LED display devices are manufactured with transparent substrates and transparent opening regions, then the display panel achieves macroscopically transparent effect, but the ability to display black is lost
Solution Approach 1:
The display panel is segmented into multiple pixel regions, with each pixel containing both light-emitting components and electrochromic components. This segmentation allows different functional regions within each pixel to work independently - the light-emitting region provides transparency when off, while the electrochromic region provides black display capability when activated, resolving the contradiction between overall transparency and black display capability.
Solution Approach 2:
The electrochromic layer is nested within the pixel structure beneath the transparent pixel layer, with electrochromic regions positioned to correspond with light-emitting regions. This nested arrangement allows the electrochromic material to be integrated into the display structure without compromising the transparent substrate's function, enabling black display capability while maintaining overall panel transparency.
2Illumination intensity
If distances among pixels of LEDs are increased to achieve transparent effect, then transparency is improved, but black display capability deteriorates
Solution Approach 1:
Different regions of the display panel are assigned different functional qualities - the transparent substrate and opening regions provide transparency, while the electrochromic regions provide black display capability. This local differentiation allows each region to optimize its specific function, with the electrochromic material providing localized black display capability without requiring changes to the overall transparent structure.
Solution Approach 2:
The display panel combines multiple materials with different optical properties - transparent substrate materials, light-emitting LED materials, and electrochromic materials that can switch between transparent and black states. This composite structure integrates the advantages of each material, achieving both macroscopic transparency and localized black display capability through the synergistic combination of different functional materials.
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 allows for an entire transparent display panel to maintain transparency while achieving black display for each pixel, significantly improving the contrast ratio and image display effect, especially under low gray scale conditions.
Implementation Method 1
the pixelated electrochromic layer includes a plurality of electrochromic regions, the plurality of pixel light-emitting regions and the plurality of electrochromic regions are arranged in one-to-one correspondences. At least one of the plurality of electrochromic regions is capable of being switched between a transparent state and a black state.
Implementation Method 2
The ion transport layer is configured for transporting ions and blocking electrons from passing through.
Implementation Method 3
a transparent pixel layer including a plurality of pixel light-emitting regions
Data Source
AI summary
A display panel and a device are provided. The display panel includes a transparent pixel layer and a pixelated electrochromic layer. The transparent pixel layer includes a plurality of pixel light-emitting regions. The pixelated electrochromic layer is disposed under the transparent pixel layer, the pixelated electrochromic layer includes a plurality of electrochromic regions, and the plurality of pixel light-emitting regions and the plurality of electrochromic regions are arranged in one-to-one correspondences. At least one of the plurality of electrochromic regions in the pixelated electrochromic layer can be switched between a transparent state and a black state.