The 1.28-inch circular LCD module is a display solution designed for compact devices, especially for wearable devices such as smart watches, fitness trackers, and other small electronic devices. This type of module not only provides a clear information display platform, but also has the characteristics of low power consumption and easy integration, which is very suitable for battery-powered applications. The following is a more detailed introduction to this 1.28-inch circular LCD module:
Module Features
Size and Resolution
Size: 1.28 inches diagonal length, suitable for applications that require compact design.
Resolution: The common resolution is 240x240 pixels. This high resolution can provide clearer text and image display effects, suitable for applications that require fine display.
Screen Shape
Circular Design: The screen itself is circular, which makes it very suitable for wearable devices with circular design, such as smart watches or fitness trackers, which can provide a better visual experience and a fashionable appearance.
Display Technology
TFT-LCD: Thin Film Transistor Liquid Crystal Display, ensures good image quality, including bright colors and high contrast. This is particularly important for outdoor use, because it can maintain good visibility even in strong light.
IPS panel: Some models may use IPS technology, which provides wider viewing angles and more realistic color reproduction. Although TN panels are more common because of their lower cost and fast response time, IPS may be a better choice in cases where the visual experience has an advantage.
Interface type
SPI interface: Supports data transmission through the serial peripheral interface, which is a common communication method, especially suitable for resource-constrained microcontroller platforms. The SPI interface is known for its simplicity and efficient data transmission speed.
RGB interface: Some models may also provide RGB interface options, allowing more direct color control, suitable for application scenarios that require higher color accuracy.
MCU interface: It can be directly connected to a microcontroller unit (MCU), which simplifies the system integration process and facilitates the development of embedded systems.
Physical parameters
Active display area: For a screen with a resolution of 240x240, the active area diameter is approximately 23.4mm.
Dimensions: The size of the entire module varies depending on the specific model, but is generally compact, such as a diameter of approximately 33.8mm or less.
Backlight control: The BLK pin can accept a PWM signal to adjust the brightness, thereby saving energy and extending battery life.
Power consumption characteristics
Low power consumption: Many 1.28-inch circular LCD modules adopt low power consumption design, making them ideal for small devices that rely on battery power.
Application scenarios
Due to their compact size and appropriate resolution, 1.28-inch circular LCD modules are ideal for the following applications:
Smart wearable devices: such as personal health monitoring instruments such as smart watches and bracelets.
Portable medical devices: such as small medical tools such as blood glucose meters and pulse oximeters.
Consumer electronics accessories: such as display screens on headphones, remote controls, etc.
Industrial automation: small HMI (human-machine interface), sensor reading display, etc.
Selection suggestions
When choosing a specific 1.28-inch circular LCD module, please consider the following factors:
Performance requirements: Decide which display technology to choose (TN vs IPS) based on whether your project requires high refresh rate, full viewing angle or other special features.
Interface compatibility: Confirm whether the interface of the selected module (such as SPI or RGB) can be seamlessly connected with the existing microcontroller or main control board.
Power consumption considerations: Especially for battery-powered products, choosing a low-power module can significantly extend the battery life.
Cost-effectiveness: Balance the relationship between budget constraints and required functional features to find the most cost-effective solution.
Example products
Waveshare 1.28-inch circular LCD module: This is a popular circular LCD module option with a 240x240 resolution, TFT-LCD technology, and SPI interface support. The module has a 65,536-color display capability and is suitable for a variety of embedded systems and smart wearable devices.
Adafruit 1.28-inch circular TFT color display module: This circular TFT display module launched by Adafruit also has a 240x240 resolution, supports SPI interface, and has a built-in SD card slot for easy loading of images and fonts. It is very suitable for DIY projects and individual developers.
JDI 1.28-inch circular 240x240 LCD module: This circular module produced by Japan Display Inc. (JDI) has excellent display effects and low power consumption characteristics, suitable for high-end smart watches and other precision display applications.
In addition, there are some specific 1.28-inch circular LCD modules with touch screen functions, which increase the possibility of user interaction and are suitable for devices that require touch operation. If you are looking for a 1.28" round LCD module for a specific project, it is recommended to contact a professional supplier to obtain the latest product specifications and technical support. At the same time, considering that the specific parameters provided by different manufacturers may vary, it is very important to carefully compare the detailed information of each product. In addition, some suppliers may also provide customization services to help you better meet specific design needs.
