Vehicle Cabin Display Arrangement With E-Ink Backup Layer
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Solution Overview
Problem
Existing display technologies in vehicle cabins, particularly aircraft cabins, struggle to adapt to curved surfaces and maintain low contrast with the surrounding environment, especially in case of failure, while ensuring display of certification-relevant information.
Innovation Solution
A dual-layer display system comprising a first dynamic color display layer, such as OLED, and a second e-ink layer, with independent control and power supplies, allowing the e-ink layer to act as a backup for continuous display of certification-relevant information even in failure scenarios, and optionally utilizing external lighting and reflector elements for enhanced visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a regular display layer is used, then high contrast display is achieved, but power consumption increases and reliability decreases
Solution Approach 1:
The display system is divided into two independent display layers: a first display layer for primary high-contrast display and a second e-ink display layer for backup and low-power operation. Each layer can operate independently, allowing the system to segment power consumption based on operational requirements.
Solution Approach 2:
The system changes the operational state of the display layers dynamically. The e-ink layer operates in a low-power state for certification information, while the first display layer provides high-contrast display when needed. This parameter change allows optimization of power consumption based on display requirements.
2Device complexity
If a single display layer is used, then device complexity is reduced, but reliability decreases
Solution Approach 1:
The second e-ink display layer serves as a pre-prepared backup layer that can take over if the first display layer fails. This beforehand cushioning ensures continuous display of certification-relevant information, maintaining reliability without significantly increasing complexity.
Solution Approach 2:
The dual-layer display system serves multiple functions: the first display layer provides primary high-contrast display, the second e-ink layer provides backup display and low-power operation mode. This multi-functionality increases reliability while keeping the overall system manageable in complexity.
3Illumination intensity
If high contrast display is used for idle state, then visibility is improved, but passenger comfort deteriorates
Solution Approach 1:
Different display regions and states use different contrast levels. The e-ink layer displays certification information with appropriate contrast, while the first display layer can be adjusted to match ambient lighting conditions, reducing glare and passenger disturbance during idle states.
Solution Approach 2:
The display system dynamically adjusts contrast levels based on operational state and ambient conditions. The first display layer can transition between high-contrast and low-contrast modes, while the e-ink layer maintains stable, appropriate contrast for certification information, optimizing both visibility and comfort.
Data Source
AI summary
A display device for a vehicle cabin is disclosed including a first display layer having a plurality of first picture elements and configured to emit light towards a light emission side, a second display layer having a plurality of second picture elements and arranged adjacent to the first display layer opposite to the light emission side, a first control device connected to the first display layer and configured to control the plurality of first picture elements to display a first image on the first display layer, and a second control device connected to the second display layer and configured to control the second picture elements to display a second image on the second display layer. The second display layer is configured as an e-ink layer.