Transparent Vehicle Display Polarization for Cabin Privacy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern motor vehicle displays with transparent screens lack privacy, as the displayed content is visible from outside the vehicle through the windshield, and the light emission can irritate other vehicles or passersby.
Innovation Solution
Combining a transparent display screen element with a polarizing element that attenuates or blocks the light emitted by the display screen, while remaining transparent to ambient light, thereby enhancing privacy and reducing light emission towards the outside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent display screen element is used to display content, then the display content is visible from both inside and outside the vehicle, but privacy is lost and light emission irritates external observers
Solution Approach 1:
A polarizing element is introduced as an intermediary component between the transparent display screen and the external environment. This polarizer selectively transmits or blocks light based on its polarization state, allowing display content to be visible from inside the vehicle while preventing external observers from seeing the content or being irritated by light emission.
Solution Approach 2:
The patent utilizes changes in light polarization parameters to control visibility. By orienting the polarizing element at specific angles relative to the display screen's light emission, the system dynamically controls which directions can observe the display content, thereby maintaining privacy and reducing light irritation to external observers.
2Adaptability or versatility
If the display emits light in two directions (toward driver and toward windshield), then the content is visible both inside and outside the vehicle, but this causes privacy issues and irritation to other vehicles or passersby
Solution Approach 1:
The polarizing element creates asymmetric light transmission properties in different directions. While the display content remains visible to drivers inside the vehicle, the same polarized light is blocked or significantly reduced in the direction toward the windshield and external observers, thus eliminating privacy issues and light irritation while maintaining bidirectional visibility capability.
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 high degree of privacy for vehicle occupants while minimizing the irritation caused by light emission to external observers, maintaining transparency in both directions.
Implementation Method 1
A polarizing element is understood here as a component or a component group which is configured to attenuate or even block light that is actively emitted by the display screen element
Implementation Method 2
The transparent display screen element can be a transparent display screen having organic light-emitting diodes ('transparent organic light-emitting diodes' (TOLED))
Data Source
AI summary
A display device includes a transparent display screen element, which has a front side and a rear side opposite to the front side, and a polarizing element arranged flatly on the rear side of the transparent display screen element. The polarizing element is to attenuate light output by at least one lighting element of the transparent display screen element. A motor vehicle may have such a display device, in particular where the display device may be arranged freestanding at or on an interior trim element of the motor vehicle.