3.0-inch IPS LCD Screen with 240*400 Resolution, Supports SPI/MCU Interface, Long-Term Supply

      This 3.0-inch IPS LCD screen, with a resolution of 240*400, supports SPI/MCU interfaces and uses ST7793 or ILI9327. It is a classic and practical LCD display screen. Shenzhen Hongjia Technology can supply it long-term, maintains a safety stock, and also accepts customized services. Our engineer, Xiao Liu, will introduce the advantages of this screen and purchasing considerations in this article.

I. Product Specifications Summary

Item Parameters Size 3.0 inches (diagonal) Panel Type IPS Resolution 240 (RGB) * 400 (commonly known as WQVGA) Interface Type SPI interface and MCU interface Supply Status Long-term supply

Core Features and Advantages Analysis

1. IPS Screen: The biggest advantage is its excellent viewing angle, typically exceeding 170°. Color performance and consistency are much better than traditional TN screens, making it suitable for applications viewed from different angles.

2. Dual Interface Support:

SPI Interface: Fewer pins, simpler wiring, lower I/O requirements for the MCU, but slower refresh rate, suitable for displaying static images or infrequently updated interfaces.

MCU Interface: Typically refers to an 8-bit or 16-bit parallel interface, with fast transmission speed, enabling smoother dynamic displays, and is the common mode for this type of screen.

3. Resolution 240*400: This is a slightly higher portrait screen resolution, displaying more content than the common 240*320, ideal for devices that need to display lists, menus, and text information, such as handheld devices, smart home control panels, and industrial instruments.

4. Long-Term Supply: This is crucial for industrial, medical, and commercial equipment with long product lifecycles, ensuring production continuity and inventory stability.

II. Typical Application Areas

Portable medical devices (e.g., blood glucose meters, blood pressure monitors)

Industrial handheld terminals, POS machines

Smart home control panels, security intercom indoor units

Vehicle-mounted auxiliary displays

III. Procurement and Supply Recommendations

Specific Model Requirements: Size and resolution alone are insufficient to uniquely determine the model. Before purchasing, confirm the following details:

Driver IC Model: Such as ST7793, ILI9327, which determines your underlying driver code.

Interface Definition Order: Is the pin arrangement VCC, GND, SCL, SDA, RES, DC, CS, or some other order?

Backlight Type and Voltage: Typically 4-6 LEDs in series, with a voltage of approximately 12-18V.

Precise Dimensions: Including the effective display area and overall length, width, and thickness, especially the connector location (top/bottom/side).

Touch Functionality: Is it a capacitive or resistive touchscreen? If so, what is the touch IC?

      Shenzhen Hongjia Technology boasts 12 years of industry experience, specializing in the R&D, production, and sales of 1.14-inch to 12-inch displays and matching touchscreens. We maintain a constant safety stock for each product, ensuring long-term supply and guaranteeing our customers' production and sales continuity. The 3.0-inch 240*400 IPS screen we're introducing today is an excellent choice, balancing display quality, interface flexibility, and supply stability, making it ideal for projects with long-term production plans. Please email our sales team if interested; we will provide comprehensive information and a cost-effective quote.