The 1.3 inch round TFT display is a compact circular LCD module designed for modern electronic devices where space is limited but visual appeal matters. With a typical resolution of 240x240 pixels, this small round screen offers vibrant colors and clear images, making it ideal for smartwatches, IoT sensors, medical gadgets, and industrial control panels. Its circular shape allows for creative UI designs and seamless integration into round enclosures. The display usually supports SPI or RGB interfaces for easy connection with microcontrollers like Arduino, ESP32, or STM32. Low power consumption and excellent sunlight readability further enhance its versatility across various applications.

1、1.3 inch round TFT display specifications
2、1.3 inch round TFT LCD module
3、1.3 inch round TFT for smartwatch
4、1.3 inch round TFT resolution
5、1.3 inch round TFT interface
6、1.3 inch round TFT brightness

1、1.3 inch round TFT display specifications

The 1.3 inch round TFT display typically measures 1.3 inches diagonally with a circular active area. Its diameter is approximately 33.0 mm, making it one of the most compact round displays available in the market. The display module usually includes a glass panel with integrated driver IC such as ST7789 or GC9A01, which supports full-color 65K or 262K color reproduction. The resolution standard for this size is 240x240 pixels, providing a pixel density of around 260 PPI, which delivers sharp text and detailed graphics. The viewing angle is generally 80 degrees in all directions, ensuring good visibility from various positions. The operating temperature range typically spans from -20°C to +70°C, allowing use in both indoor and outdoor environments. Power consumption is low, often around 20-40 mA at full brightness, making it suitable for battery-powered devices. The module thickness usually measures between 1.5 mm and 2.5 mm, depending on whether it includes a backlight or touch panel. The display supports 16-bit or 18-bit color depth via SPI or parallel interface. Some advanced versions also include a capacitive touch screen layer for interactive applications. The glass substrate is often treated with an anti-glare coating to reduce reflections under direct sunlight. The display weight is approximately 5-10 grams, contributing to lightweight product designs. The module typically comes with a flexible flat cable (FFC) or pin header for easy integration. The backlight uses white LEDs with brightness levels adjustable via PWM signals. Overall, these specifications make the 1.3 inch round TFT a versatile choice for compact visual interfaces.

2、1.3 inch round TFT LCD module

The 1.3 inch round TFT LCD module is a complete display solution that integrates the TFT panel, driver IC, backlight, and optional touch sensor into a single compact package. These modules are pre-assembled and tested, reducing development time for engineers and hobbyists. The module typically uses an ST7789V or GC9A01 controller chip, which handles pixel addressing, color mapping, and refresh rate management. The interface is usually 4-wire SPI, which only requires four GPIO pins on the microcontroller for data transmission, clock, chip select, and data/command control. Some modules also support 8-bit or 16-bit parallel interface for faster data transfer, useful for video or animation applications. The module often includes a built-in voltage regulator to convert 3.3V or 5V input to the required panel voltage. The backlight circuit is integrated with a current-limiting resistor, allowing direct connection to a GPIO pin for brightness control. Many modules come with a pre-soldered header or FPC connector for plug-and-play connectivity. The PCB design of the module is optimized for minimal electromagnetic interference and stable operation. Some manufacturers offer modules with an additional microSD card slot for storing images or fonts. The module's firmware is pre-configured for default orientation and color format, but can be reprogrammed via SPI commands. The module's size and shape make it ideal for round smartwatch faces, circular dashboard displays, and wearable gadgets. The module's durability is enhanced by a protective cover glass or resin coating for scratch resistance. The module's power consumption is typically under 50 mA, making it energy-efficient for always-on applications. The module's response time is around 10-20 ms, sufficient for most GUI applications.

3、1.3 inch round TFT for smartwatch

The 1.3 inch round TFT display is increasingly popular in smartwatch design due to its compact size and circular shape that mimics traditional analog watches. This display size is ideal for wearable devices because it provides enough screen real estate to show time, notifications, health metrics, and app icons without being bulky. The 240x240 resolution offers crisp text and clear graphics, essential for reading messages and viewing watch faces. The round shape allows designers to create visually appealing circular UI elements like analog clock hands, circular progress bars, and radial menus. The display's low power consumption is critical for smartwatches, as they rely on small batteries that need to last a full day or more. Many smartwatch implementations use the SPI interface to save GPIO pins on the main processor, leaving room for other sensors like heart rate monitors and accelerometers. The display's brightness of 300-400 nits is sufficient for indoor use, but some models offer up to 600 nits for outdoor visibility. The display's viewing angle ensures that the watch face remains readable even when the wrist is tilted. The module's thin profile, typically under 2 mm, allows for sleek watch designs. Some smartwatch modules also include a capacitive touch layer for gesture control and tap interactions. The display's operating temperature range covers typical wrist conditions from cold winters to hot summers. The module's weight of around 5 grams does not add noticeable bulk to the watch. The display's color depth of 262K colors enables rich watch face designs with gradients and shadows. The module's driver IC supports partial refresh, which can save power when only updating small areas like the second hand. Overall, the 1.3 inch round TFT is a perfect fit for modern smartwatch applications.

4、1.3 inch round TFT resolution

The resolution of the 1.3 inch round TFT display is typically 240x240 pixels, which means the screen has 240 pixels in both the horizontal and vertical directions within a circular active area. This resolution provides a pixel density of approximately 260 pixels per inch (PPI), which is considered high enough for sharp and detailed images at typical viewing distances of 20-30 cm. The circular active area uses only the pixels within a circle inscribed in a 240x240 square, resulting in approximately 45,000 visible pixels. The driver IC handles the mapping of rectangular frame buffer data to the circular display area, using techniques like pixel masking or coordinate transformation. The 240x240 resolution allows for clear rendering of text characters, icons, and small graphics, making it suitable for data displays and simple UIs. The resolution supports 16-bit RGB565 color format, which provides 65,536 colors, or 18-bit RGB666 format for 262,144 colors, depending on the driver IC configuration. The display's pixel pitch is about 0.125 mm, which is small enough to make individual pixels nearly invisible to the naked eye. The resolution is sufficient for displaying watch faces with hour markers, hands, and digital readouts. For video playback, the 240x240 resolution can handle basic animations and short clips at 30 fps with SPI clock speeds of 40 MHz or higher. The resolution also supports anti-aliased fonts for smooth text rendering. The display's aspect ratio is 1:1, which simplifies UI layout calculations. The resolution is compatible with popular graphics libraries like Adafruit GFX, LVGL, and u8g2, which include functions for circular clipping and drawing. The resolution's square nature means that the circular display uses about 78.5% of the total pixel area, with the corners of the square frame buffer being unused. Overall, the 240x240 resolution provides an excellent balance between visual quality and processing requirements for small round displays.

5、1.3 inch round TFT interface

The 1.3 inch round TFT display typically uses a 4-wire SPI interface for communication with microcontrollers and embedded systems. The SPI interface consists of four main signals: SCK (serial clock), MOSI (master out slave in), DC (data/command), and CS (chip select). Some modules also include a RESET pin for hardware initialization and a BL (backlight) pin for brightness control. The SPI interface operates at clock speeds up to 40-80 MHz, enabling fast screen updates and smooth animations. The data is transmitted in 8-bit or 16-bit packets, with the DC pin determining whether the data is a command or pixel information. The interface supports full-duplex communication, although most TFT modules are write-only for display data. The SPI interface is widely supported by microcontrollers like Arduino Uno, ESP32, STM32, Raspberry Pi Pico, and Teensy. The interface requires only 4-6 GPIO pins, leaving many pins available for other peripherals like sensors, buttons, or wireless modules. Some advanced modules also offer QSPI (quad SPI) interface for faster data transfer using four data lines simultaneously. The interface typically operates at 3.3V logic levels, but many modules are 5V tolerant on the CS and DC pins. The SPI protocol includes a command set for configuring display parameters like orientation, brightness, sleep mode, and gamma correction. The interface supports both software SPI (bit-banging) and hardware SPI for different performance needs. The module's driver IC usually includes an internal frame buffer of 240x240 pixels, so the microcontroller only needs to send pixel data when the display content changes. The interface also supports partial update mode, where only a rectangular region of the screen is refreshed, saving bandwidth and power. The SPI interface is simple to implement and debug using logic analyzers or oscilloscopes. Overall, the SPI interface makes the 1.3 inch round TFT easy to integrate into a wide range of embedded projects.

6、1.3 inch round TFT brightness

The brightness of the 1.3 inch round TFT display is a critical parameter for outdoor visibility and power management. Typical brightness levels range from 250 to 600 nits, depending on the backlight configuration and LED efficiency. Standard modules offer around 300-400 nits, which is suitable for indoor use and shaded outdoor environments. High-brightness versions can reach 600-800 nits for direct sunlight readability, often achieved by using more powerful LEDs or multiple LED chips. The backlight typically consists of 2-4 white LEDs arranged along the edge of the display, with a light guide plate distributing light evenly across the panel. The backlight current is usually adjustable via PWM signals on the BL pin, allowing dynamic brightness control from 0% to 100%. At maximum brightness, the display consumes approximately 30-50 mA of current, while at minimum brightness, consumption drops to 2-5 mA. The brightness uniformity across the circular display is generally within 80-90%, with some variation near the edges due to the light guide design. The display's contrast ratio is typically 500:1 to 800:1, ensuring deep blacks and bright whites for good readability. The brightness can be automatically adjusted using ambient light sensors in smartwatch or IoT applications. The display's transmissive technology means that the backlight must be on for the display to be visible, unlike reflective displays. The brightness level also affects color saturation, with higher brightness producing more vibrant colors. The display's anti-glare coating helps maintain readability by reducing reflections from ambient light sources. The backlight lifetime is typically rated at 20,000-30,000 hours, depending on operating temperature and current levels. For battery-powered devices, brightness is often set to 50-70% to balance visibility with power consumption. Overall, the brightness of the 1.3 inch round TFT can be tailored to specific application requirements through backlight design and control.

This comprehensive guide has covered six highly relevant aspects of the 1.3 inch round TFT display, including its detailed specifications, complete LCD module features, smartwatch applications, resolution characteristics, interface options, and brightness capabilities. Understanding these key areas is essential for engineers, hobbyists, and product designers who are considering integrating this compact circular display into their projects. The 1.3 inch round TFT offers a unique combination of small size, circular shape, and adequate resolution that makes it stand out in the display market. Its versatility spans from wearable technology to industrial control panels, medical devices, and consumer electronics. The SPI interface simplifies integration with popular microcontrollers, while the brightness options ensure usability in various lighting conditions. Whether you are designing a smartwatch, a round dashboard, or a compact IoT sensor, the 1.3 inch round TFT provides a reliable and visually appealing solution. The following sections will delve deeper into each topic to help you make informed decisions about your next display project.

In conclusion, the 1.3 inch round TFT display is a remarkable compact visual solution that bridges the gap between functionality and aesthetics. Its 240x240 resolution delivers clear and vibrant images within a tiny circular form factor. The display module's SPI interface ensures easy integration with most microcontrollers, while its low power consumption makes it ideal for battery-operated devices. Key specifications like brightness up to 600 nits, wide viewing angles, and robust operating temperature range guarantee reliable performance across diverse environments. Applications range from smartwatches and wearable health monitors to round instrument clusters and IoT interfaces. By understanding the display's specifications, module features, resolution, interface, and brightness, you can successfully implement this component in your next product design. The 1.3 inch round TFT remains a top choice for engineers seeking a high-quality, space-efficient, and visually distinctive display solution.