Description
The YX40006A is a 4.0-inch high-resolution square TFT LCD display module featuring a 720×720 RGB resolution and a 3SPI + 18-bit RGB interface, designed for industrial control systems, smart home devices, medical equipment, handheld terminals, POS systems, and embedded HMI applications.
Powered by the NV3052C driver IC, the module delivers vivid colors, excellent image sharpness, and an All-O'Clock IPS viewing angle, ensuring consistent image quality from every direction. The combination of 3-wire SPI initialization and 18-bit RGB high-speed data transmission provides stable performance and easy integration with various embedded processors and industrial platforms.
With an outline dimension of 74.83 × 78.98 × 1.50 mm and an active display area of 71.93 × 71.93 mm, the YX40006A features an ultra-slim square design that is ideal for space-constrained products. Its high 720×720 resolution delivers crisp graphics and detailed user interfaces, making it an excellent display solution for industrial HMIs, medical instruments, smart control panels, AI terminals, consumer electronics, and IoT devices.
Basic Specifications
| Item | Specification |
|---|
| Display Size | 4.0 inch |
| LCD Type | IPS TFT-LCD, Transmissive |
| Resolution | 720 (RGB) × 720 |
| Active Area | 71.93 × 71.93 mm |
| Outline Dimensions | 74.83 × 78.98 × 1.50 mm |
| Pixel Pitch | 0.08625 × 0.08625 mm |
| Viewing Direction | All O'Clock |
| Driver IC | NV3052C |
| Interface | 3SPI + 18-bit RGB |
| Backlight | White LED × 8 |
| Analog Operating Voltage | 2.75 V Typ. |
Mechanical Drawing

Optical Characteristics
| Parameter | Typical |
|---|
| Resolution | 720 × 720 |
| 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 | -20°C ~ +70°C |
| Storage Temperature | -30°C ~ +80°C |
| Humidity | ≤90% RH (60°C) |