In recent years, infrared touchscreens (IR Touchscreens) have gained significant popularity across education, corporate, and public service sectors. Compared to traditional smart projector boards, Qtenboard Interactive Flat Panels (IFPDs) provide high-precision display and operation without the need for projector calibration. Leveraging advanced LCD technology, IFPDs deliver clear and vibrant images, while infrared touch technology allows annotation using dry/wet fingers, gloved hands, or a stylus, enabling intuitive and flexible interaction.

What is an Infrared Touchscreen?

An infrared touchscreen consists of an LCD display, infrared touch frame, and optical touch overlay, utilizing light-beam interruption to detect touch points accurately. Qtenboard IR technology ensures precise and low-latency touch performance even on large screens, supporting multi-user simultaneous operation reliably.

The infrared frame contains embedded infrared LCDand photodetectors that create an invisible optical grid. When a user touches the screen, the object blocks certain light beams, which the sensors detect. The controller then calculates the exact touch location, enabling smooth and responsive interaction.

Key Advantages of Qtenboard Infrared Touchscreens

• Cost-effective solution: More economical than large capacitive touchscreens, especially for big displays.
• Multi-touch support: Supports 20+ simultaneous touch points, ideal for collaborative work, brainstorming, and interactive classrooms.
• High response speed: Less than 8ms response time ensures fast and accurate interaction.
• Durable and scratch-resistant: Tempered glass overlay protects the display, extending product lifespan.
• Flexible screen customization: LCD and sensor layout can be adjusted to accommodate custom screen sizes.
• 4K/8K compatible: High-resolution displays deliver crisp and vivid visuals for video, images, and presentations.
• Versatile input options: Operable via bare hands, gloved fingers, wet hands, or stylus pens, suitable for diverse scenarios.

How Infrared Touchscreens Work

Qtenboard IR panels detect touch through light-beam interruption. An array of X-Y infrared LCD and photodetectors along the screen edges forms a grid. When an object touches the screen, the light beam is interrupted, and sensors detect the blocked beams. The controller calculates precise touch coordinates in real time. This technology can scale up to 500-inch displays, allowing multi-user interaction and high-precision operation.

Applications of Infrared Touchscreens

Education

• Smart classrooms and remote teaching: Supports multimedia presentations, real-time annotation, and interactive learning to boost student engagement.
• Teachers can present lesson content with videos, images, and charts, making learning more intuitive and engaging.

Business

• Efficient meeting collaboration: Supports file sharing, video conferencing, real-time annotation, and voting for decision-making.
• Meeting sessions can be automatically recorded, and content can be saved as PDF, images, or BZD files to the cloud for easy review.

Public Service

• Government and public facilities: Provides interactive guidance and self-service inquiries, enhancing efficiency and user experience.
• Departments can share information in real time on the same display, improving communication and workflow.

Retail and Hospitality

• Interactive advertising and digital wayfinding: Engages customers and enhances user experience, increasing satisfaction.

Large Venues and Control Centers

• Video walls, control rooms, and exhibition centers: Multi-screen split, remote operation, and real-time interaction provide high visibility and precise control.

Infrared vs. Capacitive Touchscreens

Application suitability: IR is cost-effective for large-scale displays, while PCAP offers precision at higher cost. Organizations can choose based on screen size, application, and budget.