1.5 Inch Square TFT Display with ST7796 Driver IC - China Suppliers & Factory for Handheld Devices
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The TFT-H015A4HQIST7N40 is a high-definition 1.5-inch square color active matrix LCD. Featuring a unique 320×320 resolution (1:1 aspect ratio), it utilizes a high-performance ST7796 driver IC to deliver crisp, vibrant visuals.
Key Features
High-Speed 8080 MCU Interface
Unlike standard SPI screens, the 40-pin MCU interface allows for much faster data throughput, enabling smooth animations and rapid UI refreshes.
Ultra-High Brightness (750 cd/m²)
Engineered for visibility, this display remains perfectly legible even in bright outdoor environments or under heavy studio lighting.
IPS Technology
Provides a full 80/80/80/80 viewing angle, ensuring zero color shifting or grayscale inversion from any direction.
Industrial Ruggedness
Operates in extreme temperatures from -30°C to +80°C, making it suitable for automotive and outdoor industrial applications.
Specifications of 1.5 Inch Square TFT LCD Display
| ITEM | PARAMETER DESCRIPTION | UNIT |
|---|---|---|
| TFT Series | TFT-H015A4HQIST7N40 | |
| Diagonal Size | 1.5" | Inch |
| Resolution | 320 × 320 | Dot |
| Dimensions | 31.52 × 33.72 × 1.51 | mm |
| Active Area (AA) | 27.74 × 27.74 | mm |
| LCD Type | TFT LCD Display | |
| Display Viewing Angle | IPS Full View | |
| Aspect Ratio | 1:1 | |
| Backlight Type | White LED | |
| TFT Driver IC | ST7796 | |
| Brightness | 750 cd/m² | cd/m² |
| Operating Temperature | -30 ~ 70 ℃ | ℃ |
| Storage Temperature | -30 ~ 80 ℃ | ℃ |
Core Technical USP & Investment Value Analysis
The investment value of this 1.5-inch square TFT LCD display is centered on its Outdoor-Ready Industrial Grade status.
- Superior Sunlight Readability: Most standard displays stop at 300–400 cd/m². At 750 cd/m², this module provides a significant competitive advantage for products used in handheld outdoor GPS, smart e-bikes, or marine equipment.
- Controller Versatility: The ST7796 is a highly stable and well-documented controller. It supports 8/16-bit parallel interfaces, which reduces the CPU load on your main controller compared to serial interfaces.
- Thin Profile (1.51 mm): The ultra-slim architecture allows engineers to design incredibly sleek handheld devices or "mini" appliances without sacrificing display durability.
When and Why Choose This 1.5 Inch Square TFT?
Choose this 1.5 inch Square TFT LCD display when:
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Outdoor Performance is Non-Negotiable If your device will be used in sunlight (e.g., handheld scanners, outdoor sensors), the 750-nit brightness is the primary reason to select this model over the 1.3" or standard 1.5" variants.
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Square UI Consistency is Required Many modern smart-home "mini" appliances (like smart coffee machines or thermostats) use 1:1 square layouts for symmetry. This 320×320 pixel density offers a "Retina-like" sharpness at this size.
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Extreme Environments are Expected When your product needs to survive a freezing winter (-30°C) or a hot industrial engine room (+80°C), this industrial-grade glass is the safest long-term investment for your BOM (Bill of Materials).
Strategic Purchasing & Core Considerations
To maximize the success of your project with the TFT-H015A4HQIST7N40, consider the following points:
Interface Integration (40-Pin)
This is a 40-pin MCU interface. Ensure your PCB design accounts for the 8080-series parallel bus. If your team is more comfortable with SPI, please consult HOTHMI for an adapter board or an alternative model.
Thermal Management
Because the backlight produces a high 750 cd/m² output, it generates more heat than standard displays. Ensure your enclosure design has adequate heat dissipation if the screen will be kept at 100% brightness for long periods.
Power Supply Logic
The module operates at +3.0V. While 3.3V is usually acceptable, high-precision industrial designs should use a dedicated LDO to maintain voltage stability and extend the life of the LED backlight.
Pin Connection
We recommend using the FPC ZIF connector for assembly. This allows for easy maintenance and reduces the risk of thermal damage to the FPC during manual soldering.