Transparent OLED Display Panel for Vehicle Windscreen
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Solution Overview
Problem
Large display panels in vehicles obstruct the driver's view and reduce perceived interior space, posing challenges for safe and comfortable driving, as they block the outside environment and create a cramped feeling.
Innovation Solution
A display device with a display panel featuring a first transparent layer of OLEDs and a second layer with adjustable light transmission subareas, allowing the panel to be transparent when not in use and opaque only where necessary for displaying content, thereby maintaining visibility and reducing visual distraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a large display panel is used to provide clear display content and user interface, then the display quality and user interaction capability are improved, but the driver's view of the outside environment is obstructed and safety is compromised
Solution Approach 1:
The display panel employs a switchable transparency mechanism that dynamically changes its optical properties between opaque and transparent states based on operational requirements. When display content needs to be shown, the panel becomes opaque; when the driver needs an unobstructed view, the panel becomes transparent, thus resolving the contradiction between display clarity and view obstruction.
Solution Approach 2:
The transparency parameter of the display panel is changed on demand between two states (transparent and opaque) to adapt to different operational conditions. This parameter change allows the display to provide clear information when needed while maintaining driver visibility when safety requires it, eliminating the permanent trade-off between display quality and view obstruction.
2Loss of information
If a large display panel is integrated in the vehicle, then more information can be presented to the user, but the perceived interior volume of the vehicle is reduced
Solution Approach 1:
The display panel's transparency is dynamically adjusted based on usage requirements. When the display function is active, the panel appears opaque and provides full information display. When not in use or when a spacious feel is desired, the panel becomes transparent, allowing the interior space to be visually extended through the display area, thus reducing the perceived bulk of the display device.
3Loss of information
If the display panel is made opaque for clear display, then display content visibility is improved, but the display panel blocks the view through the windscreen
Solution Approach 1:
The display panel transitions between opaque and transparent states dynamically. When display content must be visible, the panel switches to opaque mode. When the driver needs to view through the windscreen, the panel switches to transparent mode, allowing light to pass through unobstructed. This dynamic switching resolves the contradiction by providing only the necessary opacity at the necessary time.
Solution Approach 2:
The display panel applies opacity locally and temporarily only where and when information needs to be displayed. The rest of the panel maintains transparency, allowing the driver to see through the windscreen. This localized application of the opaque property minimizes the harmful blocking effect while preserving display functionality.
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
Enables clear and comfortable display of information while minimizing the display panel's impact on the driver's view, maintaining a larger perceived interior space and reducing distractions during manual driving.
Implementation Method 1
The first layer 13 is a pixel matrix (18) and, in particular, is designed as a transparent screen with a large number of monochromatic organic light emitting diodes (OLED) as pixel elements
Implementation Method 2
The second layer 14 is partitioned into a plurality of predetermined primary subareas 15, 15' having an adjustable degree of light transmission
Data Source
AI summary
A display panel has a first and second layers and a control unit. The first layer is a pixel matrix. The control unit is designed to actuate at least one pixel element for displaying at least one graphic display object. In a respective non-actuated state each pixel element is transparent. The second layer is partitioned into predetermined primary subareas each having an adjustable degree of light transmission. The primary subareas are separated by a primary space. The control unit is adapted to adjust a respective light transmission to a predetermined individual degree for each of the predetermined primary subareas independent of each other. The display panel also has a third layer designed to attenuate light in the primary space.