Description
The YX40009A is a 4.0-inch IPS TFT LCD display module featuring a 400×960 RGB resolution and a SPI + 18-bit RGB interface, designed for industrial automation, medical equipment, smart home products, handheld terminals, portable instruments, and embedded HMI applications.
Powered by the ST7701S driver IC, the module delivers sharp images, vivid colors, and an All O'Clock IPS viewing angle, ensuring excellent color consistency and visibility from every direction. The SPI + RGB interface combines convenient register configuration with high-speed RGB data transmission, making it compatible with a wide range of embedded processors and MCU platforms.
With an outline dimension of 42.90 × 102.08 × 2.23 mm and an active display area of 39.18 × 94.03 mm, the YX40009A features a slim mechanical design for easy integration into compact electronic products. Its high-resolution ultra-wide display, stable optical performance, and reliable operation make it an ideal solution for industrial HMIs, medical devices, smart controllers, portable electronics, and next-generation embedded systems.
Basic Specifications
| Item | Specification |
|---|
| Display Size | 4.0 inch |
| LCD Type | IPS TFT-LCD, Transmissive |
| Resolution | 400 (RGB) × 960 |
| Active Area | 39.18 × 94.03 mm |
| Outline Dimensions | 42.90 × 102.08 × 2.23 mm |
| Pixel Pitch | 0.0979 × 0.0979 mm |
| Viewing Direction | All O'Clock |
| Driver IC | ST7701S |
| Interface | SPI + 18-bit RGB |
| Backlight | White LED × 8 |
| Analog Operating Voltage | 2.8 V Typ. |
Mechanical Drawing
Optical Characteristics
| Parameter | Typical |
|---|
| Resolution | 400 × 960 |
| Contrast Ratio | 600 : 1 |
| Color Gamut | 60% |
| Brightness | 400 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) |