Curved Vehicle Touch Display with Emergency Mode
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Solution Overview
Problem
Existing touch display devices for vehicles face challenges in adapting to curved surfaces and are costly to redesign for different vehicle interiors, and there is a need to recognize failures in projector or imaging device components on the touch screen.
Innovation Solution
A touch display device with a touch panel, image irradiation, lighting, and image capturing units, along with an emergency button unit that activates an emergency mode upon sensing failures, allowing for power control of these units and user interaction through infrared sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a touch screen is implemented as a plane design, then the touch screen can be manufactured with standard flat panel technology, but it is difficult to apply the touch screen to a curved design within a vehicle
Solution Approach 1:
The patent applies curvature by forming the transparent substrate into a curved surface that matches the vehicle's interior design requirements. The imaging device, lighting unit, and other components are arranged along the curved surface, enabling the touch display to be mounted on curved surfaces while maintaining touch sensitivity and display quality through optimized optical paths and component positioning.
2Adaptability or versatility
If the design of a display module is changed based on the interior design of the vehicle, then the touch screen can be customized for different vehicle interiors, but this leads to an increase in costs
Solution Approach 1:
The patent creates a universal curved touch display module that can be adapted to different vehicle interiors through software configuration and positioning adjustments rather than complete redesign. The modular architecture allows the same hardware platform to serve multiple vehicle models and interior designs, reducing development and manufacturing costs while maintaining customization capability.
3Reliability
If the touch display device includes a projector, lighting unit, and imaging device, then it can recognize touch on a curved surface, but there is a need to directly operate the projector or imaging device during emergency situations
Solution Approach 1:
The patent segments the emergency control functionality into dedicated emergency buttons that are physically separated from the main touch display area. These emergency buttons provide direct, tactile control over the projector and imaging device during emergency situations, independent of the touch screen's software interface, ensuring reliable operation even when the main system experiences failures.
4Ease of operation
If an emergency button unit is added to allow direct operation during emergencies, then user control during failures is improved, but the device complexity increases
Solution Approach 1:
The patent merges the emergency button functions with the existing touch display structure by integrating the buttons into the same housing and using shared control circuitry where possible. The emergency buttons utilize the same infrared sensing technology and processing units as the main touch display, reducing the need for completely separate systems and minimizing the increase in overall device complexity.
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 direct user recognition of emergency situations and power management of touch display components, ensuring continued functionality and safety by activating emergency modes and controlling power supply based on unit failures.
Implementation Method 1
a lighting unit that radiates infrared rays to the touch panel; an image capturing unit that captures an image that corresponds to a touch on the touch panel
Implementation Method 2
the infrared rays radiated from the lighting unit are reflected by the user's hand. The imaging device acquires the image on the touch screen by receiving the reflected infrared rays
Data Source
AI summary
A touch display device for a vehicle and a driving method thereof are provided. The touch display device includes a touch panel that displays an image and an image irradiation unit that provides the image to the touch panel. In addition, a lighting unit radiates infrared rays to the touch panel and an image capturing unit captures an image that corresponds to a touch on the touch panel. An emergency button unit that includes at least one emergency button is activated on the touch panel during an emergency mode. A controller is configured to activate the emergency mode by sensing a failure of one of the touch panel, the image irradiation unit, the lighting unit, and the image capturing unit.