Description
Product Introduction
The TFT-H040A21ZDIST5N40, launched by HOTHMI, is a high-resolution 4.0-inch color Bar Type TFT Display with a resolution of 400(RGB)x960 dots, capable of rendering 16.7 million rich colors. This module adopts advanced normally black transmissive liquid crystal technology and features a full range of wide viewing angle characteristics, ensuring visual clarity and color fidelity from multiple angles. It is built with a high-performance ST7701S driver chip, providing an RGB 18-Bit + 3SPI combined interface, supporting 3.3V and 1.8V low operating voltages, facilitating stable and smooth electrical connections with various microcontrollers. The backlight system achieves a high brightness of 500 cd/m² under constant current testing, ensuring excellent readability in bright or semi-outdoor lighting conditions.
In terms of physical construction, the Bar Type TFT Display module is compact, with external dimensions of approximately 43.30×102.95×2.52 mm, adopts a standard 40-Pin interface, and is equipped with a reliable PI reinforcement plate and gold finger contact surface to enhance durability in industrial assembly. This display is designed with outstanding industrial-grade environmental adaptability, with an operating temperature and storage temperature range of -30°C to +80°C, making it highly suitable for handheld instruments, smart home control panels, and various embedded DIY projects.
Product Highlights
- Unique Bar Type TFT Display Narrow-Border Long Strip Structure：Different from conventional displays, the unique long-strip physical form allows it to be perfectly integrated into slender machine side panels, smart knobs, elevator indicators, and bar-shaped handheld devices.
- 500 cd/m² High Brightness and 16.7M Vivid Colors：With a typical brightness of 500 cd/m² and up to 16,700,000 colors, the display delivers delicate and accurate image rendering. The wide-temperature backlight has a long lifespan and strong resistance to ambient light interference.
- ST7701S Controller for Smooth Operation：The built-in ST7701S driver IC deeply optimizes graphics rendering efficiency. Initialization commands are configured via a 3-wire SPI, followed by high-frame-rate, lag-free video and dynamic image transmission through the 18-Bit RGB interface.
- Industrial-Grade Ultra-Wide Temperature Range (-30°C ~ 80°C)：This LCD module features strong resistance to cold and heat, supporting stable, uninterrupted operation year-round in harsh northern outdoor low-temperature environments or high-temperature industrial server rooms.
- Normally Black Panel with Ultra-High Contrast Ratio：Thanks to the transmissive normally black liquid crystal technology, the module delivers pure black levels when the backlight is off or displaying black backgrounds, resulting in exceptional contrast performance.
40-Pin Pin Definitions and Interface Description
This Bar Type TFT Display module uses a 40-Pin flexible printed circuit board interface, covering power supply, backlight control, SPI initialization channel, and high-bandwidth 18-bit RGB data transmission.
Typical Product Applications
The uniquely cropped physical appearance of the long-strip display makes the Bar Type TFT Display highly effective in human-machine interaction within “micro-spaces” across various industries:
- Smart Home and High-End Appliances：Used in smart washing machine side panels, refrigerator door long-strip display areas, multi-functional integrated stove control panels, and smart wall gateway switches.
- Handheld Instruments and Industrial Control：The compact 43.30mm width is ideal for ergonomic gripping, making it widely applicable in industrial infrared thermometers, portable multi-function testers, and fieldbus analyzers.
- Automotive Cockpit and High-End Peripherals：Suitable for auxiliary status display bars in car center consoles, co-driver long-strip information screens, rearview mirror display extensions, or custom secondary screens on gaming mechanical keyboards.
- Medical Monitoring Terminals：Hospital bedside electronic name cards, portable multi-parameter patient monitors, syringe pumps, and ventilator side parameter display bars.
FAQ of Bar Type TFT Display
Q1: What is a Bar Type TFT Display and how is it different from traditional TFT LCD screens?
A1: A Bar Type TFT Display refers to a long-strip TFT LCD screen. Traditional TFT screens are mostly standard square shapes (4:3 or 16:9), while Bar Type displays typically have an elongated aspect ratio. This design is not just about aesthetics; it is specifically engineered to perfectly fit into vertical or horizontal mounting slots with extremely limited space, such as industrial rail equipment or home appliance edge panels, providing rich data display without occupying extra lateral space.
Q2: Can this industrial-grade 4.0-inch long-strip color screen work in extreme cold and hot outdoor environments?
A2: Yes, it fully supports such conditions. Compared to consumer-grade LCD screens on the market, which typically have an operating temperature range of 0°C to 50°C, the HOTHMI TFT-H040A21ZDIST5N40 features superior industrial-grade temperature resistance. Its operating and storage temperature ranges both span from -30°C to 80°C. Combined with its 500 cd/m² high-brightness backlight design, this screen maintains high data rendering accuracy whether in freezing outdoor northern charging piles or harsh dusty workshops, without experiencing blackening, color shift, or crystallization failure.
