What Tech Is Used To Interactive Flat Panel Display?

When discussing interactive flat panels, what comes to mind? 4K high-resolution screens, multi-point touch functionalities, eco-friendly digital whiteboards, or maybe even wireless screen mirroring with mobile phones, tablets, and laptops? These interactive panels offer a lot more, such as QR code scanning for memo downloads. But do you understand the underlying technologies making these features possible? This article will walk you through the interactive touch technology, backlight technology, wireless screen-sharing technology, and USB Type C data transfer technology that enable seamless interaction.

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Understanding Interactive Touch Technology

Interactive panels are commonly categorized into three touch technologies: Infrared touch, capacitive touch, and optical touch tech, especially for larger displays like 55", 65", 75", and 86".

Infrared Touch Technology

Also known as IR touch, this technology utilizes infrared rays emitted from LEDs located on the screen bezels. These rays cover every point on the screen, forming an X and Y axis that accurately registers touch points. This setup improves both the sensitivity and accuracy of the touch experience.

Advantages of Infrared Touch Screens

• High Precision: Infrared screens feature emitters and receivers on all sides, ensuring accurate touch detection even at the corners.
• No-delay Touch: The immediate touch response enhances the usability of interactive panels for writing and other functions.
• Mature and Stable: This well-established technology is widely adopted, especially by leading brands, for its reliability and stability.

Capacitive Touch Screens

Capacitive touch screens respond to the electrical properties of the human body. When touched, they detect the exact point of contact. Unlike infrared screens, capacitive touch panels have no visible gap between the touchpoint and the display, offering a smoother writing experience. However, these screens are typically more expensive, making them more popular in the European and North American markets.

Optical Touch Technology

Optical touch screens use multiple optical sensors to detect touch points. While this technology is more commonly used in the Chinese market, it is known for being less precise and harder to calibrate compared to infrared and capacitive touch screens. This results in potential touch dead zones, limiting its application.

Zero Bonding Technology

Zero bonding technology enhances the touch and visual experience by minimizing the gap between the touch glass and the backlight panel. This reduces refractive errors, delivering a clearer and more accurate display. We'll cover this technology in more detail in another article.

LCD and LED Display Technology

Interactive panels utilize different display technologies like LCD and LED. LCDs, or Liquid Crystal Displays, comprise millions of pixels to produce various colors. LEDs, or Light Emitting Diodes, serve as backlights for LCDs, offering benefits like low power consumption and long lifespan. These technologies collectively contribute to the high-quality displays of modern interactive panels.

Wireless Screen Mirroring and 5G Communication

Screen sharing allows multiple devices to display content on a single screen. Wireless screen mirroring technology like AirPlay, DLNA, and Miracast enables devices to project screens without cables. This is particularly beneficial for corporate meetings and educational settings.

AirPlay Screen Mirroring

Developed by Apple, AirPlay allows wireless transmission of media from iOS devices to AirPlay-compatible screens, including DS interactive panels.

DLNA Wireless Screen Sharing

DLNA enables media sharing but lacks support for mirroring other types of files or screens.

Miracast (WiFi-Display) Wireless Screen Sharing

Miracast facilitates wireless transmission of video images through Wi-Fi Direct. Supported devices can share content directly with other Miracast-compatible screens.

Implementing Wireless Screen Sharing on Interactive Panels

The key technology for wireless screen sharing is 5G Wi-Fi. The interactive panel has a built-in 5G signal receiver to pair with a wireless screen dongle. This enables efficient and stable screen mirroring.

• Up to 7 Meters: The technology supports sharing over distances up to 7 meters.
• Multi-Device Support: Multiple devices can project to a single interactive panel simultaneously, offering a versatile experience.

USB Type C: Fast Data Transfer and Power Supply

USB-C, marked as Type-C on DS smart boards, is a versatile connector system capable of high-speed data transfer and simultaneous audio, video, and power transmission. This makes it an invaluable feature for modern interactive panels.

Fast Data Transfer

USB Type C cables can transfer data at speeds up to 10 Gbps, significantly faster than previous standards.

Quick Charging

While standard USB-C connectors provide 2.5 watts of power, Power Delivery (PD) cables can deliver up to 100 watts, making it possible to charge laptops and other high-power devices.

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For additional insights, check out our guide on 5 Tips to Clean and Maintain a Touchscreen Device.

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