Reflective Multi-Display Layout for Seamless In-Vehicle Images
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Solution Overview
Problem
In-vehicle display devices face challenges in increasing size without high costs and in eliminating visible seams between display units, which can result in a non-seamless image due to gaps between units.
Innovation Solution
A display device comprising multiple display units and a reflector that reflects display light to project a virtual image, hiding the seams between units and eliminating the need for optical bonding and anti-glare processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display units are arranged to increase display size, then the display area is increased, but visible seams appear between the display units
Solution Approach 1:
A reflector is introduced as an intermediary component between the display units and the viewer. The reflector receives display light from multiple display units and reflects it to create a unified virtual image, effectively masking the seams between individual display units while maintaining their modular arrangement for large display area.
Solution Approach 2:
The solution transitions from a two-dimensional arrangement of display units to a three-dimensional optical system involving the reflector. By utilizing the spatial dimension and optical path, the system creates a virtual image that integrates multiple display units into a seamless appearance, resolving the seam visibility issue while maintaining large display area.
2Manufacturing precision
If optical bonding and anti-glare processing are applied to eliminate seams, then seam visibility is reduced, but device complexity and manufacturing cost increase
Solution Approach 1:
Instead of applying complex optical bonding and anti-glare processing directly to the display units, the reflector serves as an intermediary that optically integrates the display units. This approach achieves seamless appearance through optical reflection rather than physical bonding, significantly reducing manufacturing complexity and cost.
3Illumination intensity
If a backlight is added to organic EL displays to improve visibility, then illumination intensity is increased, but device complexity and power consumption increase
Solution Approach 1:
Organic EL display units inherently emit their own light without requiring a separate backlight system. The reflector utilizes this self-emitted light to create the virtual image, eliminating the need for additional backlight components and reducing overall device complexity and power consumption.
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 effectively conceals the seams between display units, providing a seamless image to the occupant and reducing the need for additional processing, while also eliminating the requirement for a backlight in organic EL displays.
Implementation Method 1
The reflector is disposed to face the display screen of each of the plurality of display units and configured to reflect the display light emitted from each of the plurality of display units
Data Source
AI summary
A display device includes a plurality of display units and a reflector. The plurality of display units emits display light representing an image to be displayed from a display screen. The reflector is disposed to face the display screen of each of the plurality of display units and reflects the display light emitted from each of the plurality of display units.