OLED Seat Reservation Display with Wide Reading Angle
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Solution Overview
Problem
Existing seat reservation displays using light-emitting diodes (LEDs) face limitations such as narrow reading angles, rigidity, sensitivity to mechanical shock, high power consumption, and reduced readability in bright daylight, making them costly and impractical for widespread use, especially in elongated transport vehicles like trains and airplanes.
Innovation Solution
The use of organic light-emitting diodes (OLEDs) with a flexible design and a wide reading angle, integrated into seat upholstery, controlled via an RS-485 interface, and powered by infrared, radio, or acoustic signals, eliminating the need for complex wiring and allowing for integration into seat frames, along with a motion detector for energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional light-emitting diodes (LEDs) are used for seat reservation displays, then the display can be controlled electronically, but the reading angle is limited to 90 degrees requiring multiple displays for all-round visibility
Solution Approach 1:
The patent changes the fundamental parameter of the light-emitting element from conventional LED to OLED (organic light-emitting diode). This material parameter change enables a reading angle of more than 170 degrees, eliminating the need for multiple displays and reducing device complexity while maintaining electronic controllability.
2Stability of the object's composition
If conventional rigid displays are used for seat reservations, then the display structure is stable, but the display is sensitive to mechanical shock and cannot be integrated into seat upholstery
Solution Approach 1:
The patent employs flexible OLED technology that can be integrated into the upholstery of seats. The flexible display element is embedded within the seat structure, protecting it from mechanical shock while maintaining visibility. This flexible integration approach resolves the contradiction between structural stability and mechanical shock resistance.
3Ease of operation
If multiple displays are used to achieve all-round visibility with limited reading angle LEDs, then complete visibility is achieved, but the cost and power consumption increase significantly
Solution Approach 1:
By changing from conventional LED to OLED technology, the patent achieves a reading angle of more than 170 degrees with a single display. This parameter change eliminates the need for multiple displays, thereby reducing both the cost and the power consumption while maintaining complete visibility from all directions.
4Extent of automation
If light-emitting diodes are used for seat reservation displays, then the display can be electronically controlled, but the readability is greatly reduced in bright daylight conditions
Solution Approach 1:
The patent changes the light-emitting technology from conventional LED to OLED, which provides superior visibility in bright daylight conditions. The OLED's emission characteristics maintain readability even when outshone by incident daylight, while preserving electronic controllability through the EIA-485 interface.
5Device complexity
If conventional displays with limited reading angle are used, then the display structure is simple, but the number of conductor cross-sections required increases for complex wiring networks
Solution Approach 1:
By implementing a single OLED display with more than 170 degrees reading angle, the patent simplifies the wiring network. Only one display unit requires power and control connections, eliminating the complex multi-display wiring infrastructure and reducing conductor cross-section requirements while maintaining all-round visibility.
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
This solution provides a long-lasting, cost-effective reservation display with a nearly 180-degree reading angle, reducing the number of displays needed, enhancing visibility, and increasing durability and readability in various lighting conditions, while minimizing installation and maintenance efforts.
Implementation Method 1
each lighting element is constructed as an 'organic, light-emitting diode', also referred to as 'OLED'
Implementation Method 2
The use of organic light-emitting diodes (OLEDs) with a flexible design and a wide reading angle
Data Source
AI summary
The seat or berth has a seat or berth surface with selection units, and a reservation display with a light matrix from electrically controllable organic light emitting diodes (OLED) as display area. The light matrix is controllable via an electronic interface according to a standard EIA 485, formerly RS 485. Connections of each OLED are electrically conductively connected with each other in respective rows and columns of the light matrix. Each OLED is activated by applying a voltage to the connections of the respective columns and rows of the light matrix.