Description
The YX15402A is a 1.54-inch square TFT LCD display module featuring a 240×240 RGB resolution and an 8-bit MCU interface, designed for wearable devices, handheld terminals, industrial controllers, medical equipment, and smart IoT applications.
Powered by the ST7789V driver IC, the module delivers vivid colors, stable image quality, and an All-O'Clock viewing angle, providing excellent visibility from every direction. The 240×240 resolution ensures crisp text and smooth graphics, while the MCU interface offers simple integration with a wide range of embedded processors and microcontrollers.
With an outline dimension of 31.52 × 33.72 × 1.85 mm and an active display area of 27.72 × 27.72 mm, the YX15402A features a compact mechanical design that is ideal for space-limited products. Its reliable optical performance, low-power operation, and industrial-grade reliability make it an excellent display solution for portable medical devices, smart meters, industrial HMIs, consumer electronics, and embedded control systems. The module features a 1.54-inch TFT-LCD, 240×240 resolution, ST7789V driver IC, and an 8-bit MCU interface.
Basic Specifications
| Item | Specification |
|---|
| Display Size | 1.54 inch |
| LCD Type | TFT-LCD, Transmissive |
| Resolution | 240 (RGB) × 240 |
| Active Area | 27.72 × 27.72 mm |
| Outline Dimensions | 31.52 × 33.72 × 1.85 mm |
| Pixel Pitch | 0.1155 × 0.1155 mm |
| Viewing Direction | All O'Clock |
| Driver IC | ST7789V |
| Interface | MCU 8-bit |
| Backlight | White LED × 3 |
| Analog Operating Voltage | 3.3 V Typ. |
Mechanical Drawing

Optical Characteristics
| Parameter | Typical |
|---|
| Resolution | 240 × 240 |
| 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) |