Description
The YX40018A is a 3.92-inch square TFT LCD display module featuring a 320×320 RGB resolution and a selectable MCU 8080 or 4-wire SPI interface, making it an ideal display solution for industrial control systems, smart home devices, medical equipment, POS terminals, handheld instruments, and embedded HMI applications.
Powered by the ST7796U driver IC, the module delivers stable image performance, vivid color reproduction, and an All-O'Clock viewing angle for excellent visibility from every direction. The flexible interface configuration allows developers to choose between MCU and SPI communication through IM0–IM2 settings, simplifying integration across different embedded platforms.
With an outline dimension of 75.66 × 78.23 × 2.24 mm and an active display area of 71.14 × 69.82 mm, the YX40018A offers a compact square design while maintaining excellent display performance. Its reliable optical characteristics and industrial-grade design make it well suited for smart control panels, medical instruments, industrial HMIs, home automation products, and portable electronic devices. The module features a 3.92-inch TFT-LCD, 320×320 resolution, ST7796U driver IC, MCU/SPI interface, and All-O'Clock viewing direction.
Basic Specifications
| Item | Specification |
|---|
| Display Size | 3.92 inch |
| LCD Type | TFT-LCD, Transmissive |
| Resolution | 320 (RGB) × 320 |
| Active Area | 71.14 × 69.82 mm |
| Outline Dimensions | 75.66 × 78.23 × 2.24 mm |
| Pixel Pitch | 0.222 × 0.222 mm |
| Viewing Direction | All O'Clock |
| Driver IC | ST7796U |
| Interface | MCU 8080 / 4-Wire SPI (Selectable) |
| Backlight | White LED × 10 |
| Analog Operating Voltage | 2.8 V Typ. |
Mechanical Drawing
Optical Characteristics
| Parameter | Typical |
|---|
| Resolution | 320 × 320 |
| Contrast Ratio | 800 : 1 |
| Color Gamut | 60% |
| Brightness | 300 cd/m² |
| Luminance Uniformity | 80% |
| Viewing Angle (CR ≥ 10) | 80° / 80° / 80° / 80° |
| Response Time | 25 ms |
Operating Conditions
| Item | Range |
|---|
| Operating Temperature | -10°C ~ +60°C |
| Storage Temperature | -20°C ~ +70°C |
| Humidity | ≤90% RH (60°C) |