Vehicle Display Privacy Panel With Switchable Viewing Angles
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Solution Overview
Problem
Existing display devices in vehicles fail to effectively minimize the visibility of displayed information from the driver's perspective, leading to potential distraction and inadequate privacy protection, especially when operated in private mode.
Innovation Solution
A display device with an optoelectronic panel and a controllable backlighting unit that allows for selectively collimating or diffusing light to different regions, enabling independent operation in private or split modes, and incorporating features like liquid crystal technology and local dimming to enhance privacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If light is diffused for wide viewing angle, then visibility from multiple positions is improved, but visibility from driver's position increases causing distraction
Solution Approach 1:
The display device is divided into multiple independently controllable regions (first display region and second display region), allowing different optical modes to be applied to different segments. The optoelectronic panel is segmented into corresponding regions that can be controlled independently to achieve different light distribution patterns in different areas of the display.
Solution Approach 2:
Different regions of the display are assigned different optical properties: the first display region uses collimated light for narrow viewing angle (privacy mode) while the second display region uses diffused light for wide viewing angle (sharing mode). This allows each region to have optimized quality for its intended purpose.
2Object-affected harmful factors
If light is collimated for narrow viewing angle, then privacy is improved, but visibility for intended viewers is reduced
Solution Approach 1:
The display device dynamically switches between collimated and diffused light modes based on operational requirements. The control unit can change the optical state of the optoelectronic panel in real-time, allowing the display to adapt its privacy characteristics and visibility according to the current usage scenario.
Solution Approach 2:
The optical parameters of the display are changed by switching the light distribution mode of the optoelectronic panel. By changing from collimated to diffused light or vice versa, the viewing angle and privacy characteristics are adjusted without changing the physical structure of the display.
3Object-affected harmful factors
If entire display is operated in private mode, then privacy protection is improved, but visibility for all users is reduced
Solution Approach 1:
The display is segmented into multiple independently controllable regions, allowing different privacy modes to be applied to different segments simultaneously. This enables flexible configurations such as one region in private mode and another in sharing mode, or different regions with different privacy levels.
Solution Approach 2:
The display device achieves multi-functionality by allowing each region to operate in different modes (private or sharing) simultaneously. This universal design enables the display to serve multiple purposes: private information display, shared information display, and mixed-mode operation, all within a single device.
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 enhanced privacy by reducing visibility of certain display areas from the driver's viewpoint, minimizing distraction and improving privacy protection through controlled light direction and intensity, ensuring clear visibility for intended viewers.
Implementation Method 1
light incident from the backlighting unit, for the visibility of the information displayed on the display area in private mode, is collimated and directed to regions of the display aligned with these areas
Implementation Method 2
for the visibility of the information displayed on the display area in split mode, is diffused and directed to regions of the display aligned with these areas
Data Source
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Figure 3~4
Figure 5a~5c
AI summary
The invention relates to a display device, in particular for a vehicle, for displaying information, comprising an electronic display (10) with a front face, which has a display surface, and a rear face facing away from the front face, and comprising a backlighting unit (12) for backlighting the display (10), said backlighting unit having a light output face arranged so as to face the rear face of the display (10). The display device additionally has an optoelectronic panel (16) which is arranged between the display (10) and the backlighting unit (12), wherein the optoelectronic panel (16) has a plurality of areas which can be operated independently of one another and in which light coming from the backlighting unit (12) can be relayed to display (10) regions, which are flush with said areas, in a bundled manner in order to make the information displayed on the display surface visible during an operation in a private mode and to display (10) regions, which are flush with said areas, in a scattered manner in order to make the information displayed on the display surface visible during an operation in a sharing mode. The display device lastly also comprises an electronic actuation unit (26) for actuating both the optoelectronic panel (16) for operating regions in the private mode or in the sharing mode as well as the display and the backlighting unit (12).