2.1 inch Round TFT LCD 480×480 ST7701S

2.1 inch Round TFT LCD  RGB interface 40-pin Capacitive Air Bonding AF processing

This 2.1 inch Round TFT LCD display features a resolution of 480×480 pixels and adopts an IPS TFT-LCD panel with capacitive touch. It offers full viewing angles, vivid colors, and a true black background when the display is off, ensuring excellent visual performance from any direction.

The module integrates the ST7701S driver IC and supports an RGB interface, enabling fast and stable data transmission. The capacitive touch panel, driven by the CST826 IC, delivers smooth and responsive touch performance, making it ideal for applications requiring precise user interaction.

With a brightness of 450 cd/m², the display remains clearly visible in various lighting conditions. It operates reliably in temperatures ranging from -20°C to +70°C and can be stored between -30°C and +80°C, making it suitable for industrial and outdoor environments.

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2.1 Inch Round TFT LCD Specifications

Capacitive Touch Performance: Supports Gloved and Wet-Hand Operation

The TFT-H021A1HQIST4C40 is equipped with the CST826 capacitive touch controller, which is optimized for industrial and specialized environments, ensuring stable and reliable touch performance even when operating with gloves or on a wet screen. The module supports cotton, rubber, or latex gloves up to 1.5mm in thickness, making it suitable for applications such as cold storage operations, medical protection, and cleanroom workshops. By optimizing the touch sensitivity algorithm, accurate touch recognition is maintained even with gloved hands, preventing response delays or failures.

In wet-hand or surface moisture conditions, the built-in water rejection algorithm effectively suppresses interference from water films, avoiding false touches or touch interruptions. Whether used outdoors in the rain, on kitchen equipment, or on medical devices with residual moisture after disinfection, the screen maintains precise touch response. This feature is particularly valuable for applications requiring high environmental adaptability, such as food processing, outdoor terminals, and handheld medical devices.

The module supports multi-touch and comes with pre-calibrated touch firmware tailored for the round display, ensuring accuracy and linearity. For further optimization based on specific glove materials or humidity conditions, our technical support team can assist with parameter adjustments.

2.1 inch Round TFT LCD with AF anti-fingerprint coating

The touch surface of the 2.1 inch Round TFT LCD is covered with an AF (Anti-Fingerprint) coating, which effectively resists oil and fingerprints, keeping the screen surface clean and bright. This coating, applied using a vacuum deposition process, possesses excellent hydrophobic and oleophobic properties, making it difficult for water droplets and oil stains to adhere; a gentle wipe restores its cleanliness. In applications requiring frequent cleaning and disinfection, such as medical equipment, food processing, and public terminals, the AF coating not only enhances the user experience but also extends the screen’s lifespan,preventing surface wear caused by frequent wiping.

Product application scenarios of 2.1 inch Round TFT LCD

• Smart Home Appliance Displays:Robot Vacuum Cleaners: Serving as a status display on the top of the robot, showing cleaning mode, battery level, remaining time, map, or fault codes, enhancing the product’s technological appeal and interactivity.
• Industrial and Commercial Applications:Industrial Handheld Terminals: Serving as a display for rugged handheld devices, showing data, menus, and status. Capacitive touch makes operation easy while wearing gloves or in wet environments.
• Medical Device Displays:Portable Medical Devices: (e.g., handheld monitors, infusion pumps, pulse oximeters) require a small display to show patient vital signs data, device status, and alarm information.