Transparent Vehicle Display Shielding for Driver Glare Control
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Solution Overview
Problem
The light from a transparent display in a vehicle can leak and affect the driving of the driver when positioned behind the front seat, as it may be reflected by the front window and enter the driver's field of view.
Innovation Solution
A vehicle control method and display device that uses a variable light transmittance sheet with a light-shielding region and transmission region to prevent light from entering the driver's view, by setting the light-shielding region to overlap with the display region and adjusting the light transmittance to shield the light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transparent display is positioned behind the driver to provide entertainment or information, then the display can be viewed by rear seat passengers, but the light from the display leaks and affects the driver's visibility and safety
Solution Approach 1:
A light-shielding member is introduced as an intermediary component between the transparent display and the driver's field of view. This member selectively blocks light from the display while allowing it to reach rear seat passengers, thus mediating the conflict between display functionality and driver safety
Solution Approach 2:
The light-shielding member is positioned specifically at the location where light leakage occurs, creating a localized solution. The shielding is applied only to the extent necessary to block harmful light from reaching the driver while maintaining display functionality for rear seat passengers
2Object-affected harmful factors
If a light-shielding member is added to block light from the display, then driver safety is improved, but the device complexity increases
Solution Approach 1:
The light-shielding member is designed as a thin film or sheet that can be easily integrated into the existing display device structure. This thin-film approach provides effective light blocking while minimizing the increase in device complexity and maintaining a compact form factor
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
Prevents the light from the transparent display from affecting the driver's view, while allowing passengers to see through the transmission region, thus enhancing safety and reducing the risk of car sickness.
Implementation Method 1
using a liquid crystal shutter to control light transmittance
Data Source
AI summary
A display device includes a transparent display and having a first display region capable of outputting a video of a first shape, and a variable light transmittance sheet which corresponds to at least the first display region, is disposed on at least a front seat side of the vehicle body, and has a variable light transmittance. When outputting a video including a second display region having a second shape in the first display region, the variable light transmittance sheet is set to include a light-shielding region having a third shape and having a first light transmittance, and a transmission region having a fourth shape other than the light-shielding region and having a second light transmittance larger than the first light transmittance, and at least a part of the light-shielding region is set to overlap with the second display region.