1.28-inch square LCD displays are a compact display solution that are widely used in smart watches, portable medical devices, personal health monitoring instruments, and other small electronic devices due to their moderate resolution and low power consumption. Not only do these displays provide enough display area to present important information, but their low power consumption and small size are also very suitable for battery-powered applications. Here is a more detailed introduction to this 1.28-inch square LCD display:
Display Features
Dimensions and Resolution
Dimensions: 1.28 inches diagonal length, suitable for applications that require compact designs.
Resolution: Common resolutions are:
128x128 pixels: suitable for simple text and graphics display, low power consumption.
240x240 pixels: provides clearer text and image display effects, suitable for applications that require fine display.
Screen Ratio
Screen Ratio: Square ratio (1:1), especially suitable for wearable devices with round or square designs, such as smart watches or fitness trackers.
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, as visibility is maintained even in strong sunlight.
IPS Panel: Some models may use IPS technology, which provides wider viewing angles and more realistic color reproduction. Although TN panels are more common due to their lower cost and faster response time, IPS may be a better choice in cases where the visual experience is advantageous.
Interface Type
SPI Interface: Supports data transmission via 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 an RGB interface option, 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 128x128, the active area is approximately 26.5mm x 26.5mm.
For a screen with a resolution of 240x240, it is approximately 23.4mm x 23.4mm.
Dimensions: The size of the entire module varies depending on the specific model, but is usually compact, such as 33.8mm x 36.5mm x 1.41mm or smaller.
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 square LCD displays use a low-power design, making them ideal for small devices that rely on battery power.
Application scenarios
Due to its compact size and appropriate resolution, the 1.28-inch square LCD display is very suitable for the following fields:
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 displays on headphones, remote controls, etc.
Industrial automation: small HMI (human-machine interface), sensor reading display, etc.
Selection Tips
When choosing a specific 1.28-inch square LCD display, consider the following factors:
Performance requirements: Decide which display technology (TN vs IPS) to choose based on whether your project requires high refresh rates, full viewing angles, or other special features.
Interface compatibility: Confirm whether the interface of the selected display (such as SPI or RGB) can be seamlessly connected to the existing microcontroller or main control board.
Power consumption considerations: Especially for battery-powered products, choosing a low-power display can significantly extend battery life.
Cost-effectiveness: Balance the relationship between budget constraints and required functional features to find the most cost-effective solution.
Example products
1.28-inch 240x240 TFT LCD display driven by ST7789: This display uses TFT technology, has a resolution of 240x240, supports SPI interface, and 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.
1.28" 128x128 ST7567 LCD Display: This is a monochrome LCD display that uses the ST7567 controller and is suitable for applications that need to save power and do not have strict color requirements, such as simple dashboards or thermometers.
In addition, there are some specific 1.28" square LCD displays with 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" square LCD display 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.
