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Release time：2025-10-23
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Capacitive Touch Screens in Marine and Navigation Fields
Capacitive touch screens are widely used in the marine and navigation fields. Applications include: navigation systems, bridge control consoles, engine room monitoring devices, and communication equipment, among others.
Due to the complex and variable marine environment, higher performance requirements are imposed on capacitive touch screens.
1. Environmental Adaptability
- Wide Temperature Tolerance: The marine environment has significant temperature variations, ranging from high temperatures in tropical waters to low temperatures in polar waters. Capacitive touch screens must operate reliably within a temperature range of -30℃ to 80℃ to ensure normal functionality under different climatic conditions.
- Water and Moisture Resistance: The marine environment is characterized by high humidity and frequent splashes of seawater. Touch screens must possess excellent water and moisture resistance, meeting at least IP65 or IP67 protection standards to prevent water from entering internal components and damaging the circuits.
- Corrosion Resistance: Seawater contains salts and salt mist, which are highly corrosive. Touch screens should be made of corrosion-resistant materials (e.g., aluminum alloy frames) or treated with anti-corrosion coatings to resist erosion from corrosive substances such as salt mist and oils.
- Shock and Vibration Resistance: Ships are subject to wave impacts and engine vibrations during navigation. Touch screens must have strong shock and vibration resistance capabilities to maintain stable operation in violently shaking environments, without screen breakage or touch failure.
2. Display Performance
- High Brightness: Sunlight is intense at sea. To ensure clear visibility of on-screen content, the brightness of touch screens must be ≥ 1000 nits, allowing crew members to read screen information clearly even under direct sunlight.
- Wide Viewing Angle: During ship operations, crew members may view the screen from different angles. By adopting wide-viewing-angle technologies such as IPS panels, touch screens can provide a viewing angle of approximately 178 degrees, ensuring clear visibility of content from all directions.
- Anti-Glare Function: Through anti-glare/anti-reflective coating treatment, the reflection of light (e.g., sunlight) on the screen surface is reduced, minimizing visual interference caused by glare and improving screen readability in strong light environments.
3. Touch Performance
- High Sensitivity: Touch screens must respond quickly to operations such as light touches and swipes, and accurately recognize subtle movements of fingers or styluses. This ensures smooth operation, even when the ship is 颠簸 (bumpy).
- Fast Response Speed: The response time should be within a short range (e.g., approximately 5 milliseconds) to achieve real-time interaction without obvious delays. This allows crew members to control ship systems in a timely manner, ensuring the timeliness and accuracy of operations.
- Precise Touch Control: Touch screens must have high touch precision to prevent misoperations. This ensures that crew members can accurately tap buttons, icons, and other on-screen elements to achieve precise control of ship systems.
- Wet Hand and Glove Operation: Crew members' hands may be wet during marine operations, and they may wear gloves in cold sea areas. Touch screens should support wet-hand operation and glove touch. This can be achieved by adopting projected capacitive touch technology combined with corresponding touch chips to meet operational needs under these special conditions.
- Electromagnetic Compatibility (EMC): Ships are equipped with a variety of electronic devices, resulting in a complex electromagnetic environment. Touch screens must have good electromagnetic compatibility, complying with EMI/EMC standards. They should be able to resist strong electromagnetic interference on board while not emitting excessive electromagnetic radiation that could affect the normal operation of other devices.
4. Easy Maintenance
The design of touch screens should facilitate installation and maintenance. For example, a modular design can be adopted to enable easy replacement of damaged components. Additionally, the screen surface should have scratch and wear resistance to reduce wear during daily use, thereby lowering maintenance costs and frequency.
Capacitive touch screens produced by Shenzhen World Touch Co., Ltd. are widely used in fields such as public transportation, shipping, navigation, and industrial control. The company can meet customers' high-standard customization requirements. Meanwhile, its products have obtained international certifications including RoHS and REACH.
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