The 1.28-inch round LCD screen 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 screen 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. Here is a more detailed introduction to this 1.28-inch round LCD screen:
Screen 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 round, which makes it very suitable for wearable devices with round designs, 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 round LCD screens adopt low power consumption design, making them ideal for small devices that rely on battery power.
Application scenarios
Due to its compact size and appropriate resolution, 1.28-inch round LCD screens 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 round LCD screen, please consider the following factors:
Performance requirements: Decide which display technology (TN vs IPS) to choose 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 screen (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 screen can significantly extend battery life.
Cost-effectiveness: Balance budget constraints with required features to find the most cost-effective solution.
Example Products
1.28" Circular 240x240 TFT LCD Screen Powered by ST7789: This screen uses TFT technology, has a resolution of 240x240, and supports SPI interface, which is suitable for a variety of embedded systems. Its rich colors and high contrast make it suitable for smart watches, handheld devices and other applications that require high-quality displays.
JDI 1.28" Circular 240x240 LCD Screen: This circular screen produced by Japan Display Inc. (JDI) has excellent display effects and low power consumption, which is suitable for high-end smart watches and other precision display applications.
In addition, some specific 1.28" circular LCD screens have touchscreen functions, which increases the possibility of user interaction and is suitable for devices that require touch operation. If you are looking for a 1.28" circular LCD screen 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 important to carefully compare the detailed information of each product. In addition, some suppliers may also provide customized services to help you better meet specific design needs.
In summary, the 1.28-inch round LCD screen has found its place in many industries with its compact size, reasonable resolution, and diverse interface options. Whether as a core component of smart wearable devices or as a key component of portable medical devices, this type of screen can provide stable and reliable performance while meeting users' requirements for aesthetics and practicality.
