Micro LED Transparent Display Dual-Side Grating Control
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Solution Overview
Problem
Dual-side displays on the market are typically thick and lack transparency due to the need for two separate display screens, which compromises their thickness and visibility.
Innovation Solution
A micro LED transparent display with a substrate and grating layer, where micro LEDs are arranged in arrays on opposite sides of the substrate, allowing light control through a grating layer that partially penetrates and reflects light, enabling dual- or single-side display functionality while reducing thickness and maintaining transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two separate display screens are disposed on two opposite sides of the dual-side display, then dual-side display functionality is achieved, but the thickness increases and transparency deteriorates
Solution Approach 1:
The display is segmented into two functional sides sharing a single substrate. The substrate integrates pixel structures that can emit light from both front and rear surfaces, eliminating the need for two separate display screens while maintaining dual-side display functionality.
Solution Approach 2:
Two display functions are merged into a single substrate structure. The pixel structures are designed to emit light through both the front and rear surfaces of the same substrate, combining what would traditionally require two separate displays into one integrated unit, thereby reducing thickness while maintaining dual-side functionality.
2Adaptability or versatility
If two separate display screens are disposed on two opposite sides of the dual-side display, then dual-side display functionality is achieved, but the transparency deteriorates
Solution Approach 1:
The display structure is segmented such that a single substrate serves both front and rear display functions. This segmentation allows light to pass through the substrate more efficiently compared to two separate screens, improving transparency while maintaining dual-side display capability.
Solution Approach 2:
By merging two display functions into one substrate, the total material quantity is reduced. The single substrate structure allows better light transmission compared to two separate screens, thereby improving transparency while achieving dual-side display functionality.
3Ease of operation
If micro LEDs are located between the grating layer and the substrate, then light direction control is improved, but the device complexity increases
Solution Approach 1:
The grating layer acts as an intermediary between the micro LEDs and the external environment. It controls the direction of light emitted by the micro LEDs without requiring complex control mechanisms, simplifying the overall device structure while improving light direction control.
Solution Approach 2:
The grating layer modifies the optical parameters of light emitted by the micro LEDs, controlling light direction through its structural properties rather than complex electronic control. This approach improves light direction control while avoiding increased device complexity.
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 adjustable light direction and luminance, reducing the display's size and thickness while enhancing transparency, making it suitable for applications like outdoor billboards and car windows.
Implementation Method 1
the lights partially penetrate through the first display surface and are partially reflected and penetrate through the second display surface
Implementation Method 2
Lights generated from the micro LEDs of the pixels can be controlled by the grating layer
Data Source
AI summary
A micro LED transparent display has a first display surface and a second display surface, which are opposite to each other. The micro LED transparent display includes a substrate, pixels and at least one grating layer. The first display surface and the second display surface are located on two opposite sides of the substrate, respectively. The pixels are arranged in arrays on the substrate, each of the pixels includes micro LEDs, and the micro LEDs are electrically connected to the substrate. The grating layer is disposed on the substrate, and the micro LEDs are located between the grating layer and the substrate. Lights generated from the micro LEDs of the pixels can be controlled by the grating layer, and the lights partially penetrate through the first display surface and are partially reflected and penetrate through the second display surface.