Description

The YX40004A is a 3.95-inch square TFT LCD display module featuring a 480×480 RGB resolution and a 3SPI + 18-bit RGB interface, making it an ideal display solution for industrial control systems, smart home devices, medical equipment, POS terminals, smart appliances, and embedded HMI applications.

Powered by the ST7701S driver IC, the module delivers vivid colors, smooth graphics, and an All-O'Clock viewing angle for excellent visibility from every direction. The combination of 3-wire SPI initialization and 18-bit RGB data transmission provides high-speed display performance while simplifying hardware integration for embedded processors and industrial platforms.

With an outline dimension of 74.83 × 78.98 × 2.18 mm and an active display area of 71.86 × 70.10 mm, the YX40004A features a compact square design that fits a wide range of modern electronic products. Its reliable optical performance, industrial-grade operating temperature, and stable display quality make it an excellent choice for industrial HMIs, medical instruments, smart control panels, consumer electronics, and portable embedded systems. The module features a 3.95-inch TFT-LCD, 480×480 resolution, ST7701S driver IC, and a 3SPI + 18-bit RGB interface.

Basic Specifications

Mechanical Drawing

Optical Characteristics

Operating Conditions