1.6-inch Resolution 400x400 Circular Interface QSPI View Direction Full/IPS LCD Display Guide
Here are the key information and usage guidelines you need to know for 1.6-inch, 400x400 pixel resolution circular LCD displays, especially those with QSPI interface and IPS panel technology. These displays are widely used in smart watches, fitness trackers, medical devices, and other small portable electronic products.
1. Product Overview
Size: 1.6-inch diagonal
Resolution: 400x400 pixels (high density)
Shape: Circular
Interface Type: QSPI (Quad Serial Peripheral Interface), providing faster data transfer speed1
Display Technology: IPS (In-Plane Switching), providing wider viewing angle and better color performance5
Viewing Angle: Full View, meaning that the image quality is maintained when viewed from different angles6
2. Key Features
High Resolution and Small Size: Provides clear and detailed picture display in a limited space, especially suitable for small devices that require fine graphics.
Wide viewing angle: IPS technology ensures clear and color-free images even from the side10
.
Low power consumption: Designed for battery-powered devices, it helps extend battery life.
Easy integration: The QSPI interface allows for easy connection to a microcontroller (MCU) or other embedded system, supporting fast data transfer.
Touch screen options: Some models support capacitive or resistive touch screens for increased interactivity9
.
3. Hardware connection
QSPI interface pin definition:
CLK (Clock): clock signal
IO0, IO1, IO2, IO3: four bidirectional data lines for parallel data transmission
CS (Chip Select): chip select signal
DC (Data/Command): data/command selection
RST (Reset): reset signal
BL (Backlight Control): backlight control (if applicable)
Power requirements:
VCC: typically 3.3V, depending on the model8
GND: ground
4. Driving and programming
Initialization settings:
Before you start displaying content, the LCD must be properly initialized. This usually involves sending a series of configuration commands to set display mode, brightness and other parameters.
Graphics library support:
Many development boards and microcontroller platforms (such as Arduino, ESP32, STM32, etc.) provide ready-made graphics libraries, such as Adafruit GFX Library or u8g2lib, which simplify drawing operations.
5. Application Examples
Smartwatches: The round screen fits the dial design perfectly, providing enough space to display time and notification information, while the high resolution ensures the clarity of icons and text.
Fitness trackers: Used to display sports data, such as steps, heart rate monitoring results, etc., high resolution makes charts more intuitive.
Medical equipment: Small handheld devices such as blood glucose meters and blood pressure monitors require a compact but clear user interface, and high resolution helps to accurately display measurement values.
Consumer electronics: For example, music players, remote controls, etc. require a small and fully functional display, and high resolution improves the user experience.
6. Purchase suggestions
Brands and suppliers: Choose displays from well-known brands to ensure quality and after-sales service. You can buy them through online platforms such as Alibaba, Digi-Key, and Mouser.
Documentation and support: Confirm the detailed data sheet and technical support resources provided by the supplier, which are critical for smooth integration.
Price and volume purchase: Compare prices from different suppliers and consider the possibility of volume purchase to obtain better prices.
Touch screen option: If you need touch function, make sure the selected display supports and has the corresponding driver9
.
7. Maintenance and care
Avoid scratches: Handle the screen surface carefully to prevent scratches caused by sharp objects.
Cleaning method: Wipe gently with a soft, slightly damp cloth, and avoid using cleaners containing alcohol or other corrosive chemicals.
Storage conditions: When not in use for a long time, please store in a dry, cool place away from direct sunlight.
8. Technological progress and future prospects
With the development of technology, these small round IPS LCD displays are becoming more and more intelligent and multifunctional. For example:
Touch function: More and more small displays integrate touch screen functions, making interaction more direct and convenient.
Low-power technology: Researchers are exploring new materials and technologies to further reduce the energy consumption of displays and extend battery life.
Wearable device integration: As the wearable market continues to expand, these displays will appear more often in new wearable products such as smart bracelets and glasses.
Higher resolution and refresh rate: To meet more complex application requirements, future displays may have higher resolutions and faster refresh rates.
These technological innovations will further enhance the functionality and aesthetics of the 1.6-inch 400x400 pixel circular IPS LCD display, making it play a greater role in global electronic device design.
9. Specific technical specifications
Operating voltage range: The typical operating voltage is 3.3V8, which means it can run at a lower voltage, making it ideal for battery-powered applications.
Controller chip: Common controllers include the ST779031, which provides rich features such as multiple color modes and support for different interface protocols, thereby improving flexibility.
Response time: Some models have a response time of 10ms, which means they can quickly update the screen and are suitable for dynamic content display.
Environmental adaptability: The operating temperature range is generally -20℃ to 70℃11
, and it can work normally in the humidity range of 5%-95%RH, showing good environmental adaptability.
10. Success Case Analysis
Suppose you are a smart watch manufacturer and plan to use a 1.6-inch circular IPS LCD display with a resolution of 400x400 pixels. You can take the following steps:
Market research: Preliminary screening of several potential suppliers by participating in large exhibitions such as China International Consumer Electronics Show (CES Asia) and Munich Electronics Show (electronica), and collect their information and contact information.
Field investigation: Arrange the team to visit several selected factories for field investigation to gain an in-depth understanding of their production capacity, technical level and service attitude.
Sample testing: Request samples from each supplier and carefully inspect the quality and appearance of the product to ensure that it meets the expected standards.
Business negotiation: In-depth discussions on key terms such as price, payment method, delivery time, etc., and sign a formal contract after reaching an agreement.
Logistics arrangement: Entrust a professional freight forwarding company to be responsible for transportation from the factory to the warehouse to ensure that the goods are smoothly cleared and delivered on time.
