Display Device Floating Image via Light Guide Microstructures
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Solution Overview
Problem
Current display technologies fail to create a convincing stereoscopic or floating visual effect due to opaque rotation shafts, color separation, low resolution, and interference with background images, and are either expensive or suffer from reduced light transmittance.
Innovation Solution
A display device comprising a panel module, a reflection module with a transparent substrate and reflective sheet, and a light guide module with optical microstructures that directs light away from the panel module to the reflection module, creating a backlight effect while shielding the background, thus achieving a floating image effect without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a projection device with rotating propeller blade is used to generate three-dimensional floating image, then the floating image effect is achieved, but the opaque rotation shaft affects the floating image effect and the rotating LEDs cause color separation and low resolution
Solution Approach 1:
The patent extracts and removes the problematic rotating propeller blade and LED components from the system. Instead, it uses a static transparent display panel with a light guide module that directs light through optical microstructures to create the floating image effect without rotating parts, thereby eliminating color separation and resolution issues while maintaining the floating effect
Solution Approach 2:
The patent replaces the mechanical rotating propeller blade system with a static optical system using a light guide module and optical microstructures. This substitution eliminates the need for mechanical rotation and moving parts, achieving the floating image effect through light manipulation rather than mechanical motion, thus improving image quality and resolution
2Ease of manufacture
If PDLC is used for transparent display to achieve full or partial transparent state, then transparency is achieved, but the unit price is high and light transmittance decreases
Solution Approach 1:
The patent replaces the expensive PDLC material with a more cost-effective transparent display panel combined with a light guide module. This substitution uses affordable optical components (transparent substrate, light guide plate, optical microstructures) to achieve the same transparent display effect without the high cost and light transmittance reduction associated with PDLC
Solution Approach 2:
The patent introduces a light guide module as an intermediary component between the light source and the transparent display panel. This light guide module with optical microstructures efficiently directs light through the transparent panel, maintaining high light transmittance while enabling the transparent display function, thereby avoiding the light transmittance reduction problem of PDLC
3Ease of manufacture
If PDLC transparent display is used, then transparency is achieved, but the displayed image overlaps and interacts with the background image resulting in clutter
Solution Approach 1:
The patent applies local quality by using reflective sheets positioned at specific locations corresponding to the display area on the transparent panel. These reflective sheets are strategically placed to reflect light only in the regions where images need to be displayed, creating a clear separation between the displayed image and the background, thereby preventing image clutter and maintaining background visibility
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 provides a cost-effective display device that achieves a clear, floating visual effect on the background without the drawbacks of existing technologies, allowing for various display configurations and easy replacement of components to achieve multiple display effects.
Implementation Method 1
The light guide plate has a plurality of optical microstructures. Light emitted from the at least one light source is, through the optical microstructures, at least partially directed away from the panel module
Implementation Method 2
the light from the light guide plate can be reflected by the reflective sheet to the display area as a backlight source
Implementation Method 3
the light from the light guide plate can be reflected by the reflective sheet to the display area as a backlight source
Data Source
AI summary
The invention provides a display device including a panel module, a reflection module and a light guide module. The panel module has a display area for displaying an image and a perspective area for displaying a background. The reflection module is disposed at a side of the panel module. A reflective sheet on the reflection module faces the panel module. The shape and position of the reflective sheet correspond to the shape and position of the display area, respectively. The light guide module includes a light guide plate and a light source. The light guide module is disposed between the panel module and the reflection module. The light guide plate has a plurality of optical microstructures, and light emitted by the light source is at least partially directed away from the panel module by the optical microstructures and is transmitted to the reflection module.