Transparent Display Backside Light Leakage Suppression
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Solution Overview
Problem
Transparent display apparatuses suffer from backside light leakage due to image beams being reflected back into the display, causing visibility issues behind the display.
Innovation Solution
The transparent display apparatus incorporates a light leakage suppression element with multiple light blocking structures on the backside of the transparent substrate, which absorbs the reflected light beams to minimize leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pixels are provided in the display area to emit image beams, then display functionality is improved, but backside light leakage occurs due to reflection at the display surface interface
Solution Approach 1:
A light leakage suppression element is introduced as an intermediary component between the display surface and the transparent substrate backside. This element includes light blocking structures that intercept reflected image beams before they can pass through the transparent substrate, thereby preventing backside light leakage while preserving display functionality.
Solution Approach 2:
The invention converts the harmful reflected light beams into a controllable element by using light blocking structures to selectively absorb or redirect them. The light leakage suppression element transforms the problematic reflection into a designed optical path control, where reflected beams are intentionally blocked at specific locations to prevent backside leakage.
2Illumination intensity
If the transparent substrate is made fully transparent, then visibility of the scene behind is improved, but reflected light beams can pass through causing backside light leakage
Solution Approach 1:
The light leakage suppression element introduces local optical properties to specific regions of the transparent substrate. The light blocking structures are strategically positioned at the backside to create localized light absorption zones, while the rest of the substrate maintains its transparency. This allows the scene behind to remain visible while selectively blocking reflected light paths.
3Object-generated harmful factors
If a light leakage suppression element is added to block reflected light, then backside light leakage is reduced, but device complexity increases
Solution Approach 1:
Instead of adding complex lateral structures to block light leakage, the invention utilizes the thickness dimension of the transparent substrate. The light leakage suppression element is positioned at the backside surface, leveraging the Z-dimension (depth) to intercept reflected beams. This approach achieves light blocking functionality without complicating the planar structure of the display apparatus.
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 solution effectively reduces backside light leakage, enhancing the visibility of the scene behind the display while maintaining the transparency and functionality of the display apparatus.
Implementation Method 1
The light leakage suppressing element includes multiple light blocking structures spaced apart from each other... which absorbs the reflected light beams to minimize leakage
Data Source
AI summary
A transparent display apparatus includes a transparent substrate, a first pixel array and a light leakage suppression element. The transparent substrate has display areas and transparent areas. The first pixel array is disposed on the transparent substrate and includes first pixels and first openings. Each of the first pixel overlaps with a corresponding display area. Each of the first opening overlaps with a corresponding transparent area. The light leakage suppression element includes light blocking structures spaced apart from each other. The first pixels are disposed on a first side of the transparent substrate. At least a portion of each of the light blocking structures of the light leakage suppression element is disposed on a second side of the transparent substrate.