Description
Product Overview of the Sun Readable Display
This 2.4-inch TFT LCD module, model TFT-H024A1QVISTKG40, is designed and manufactured by HOTHMI. It is a high-performance display device featuring a Normally Black mode. The module offers a resolution of 240(RGB) x 320 pixels and delivers excellent color performance with a 70% NTSC color gamut. It integrates the ST7789 driver chip and supports default MCU as well as SPI LCD interfaces. By adjusting specific resistor configurations, users can flexibly switch between different MPU interface modes, including 16-bit, 8-bit, 3-wire, or 4-wire options.
In terms of electrical characteristics, the operating voltage is 3.0±0.3V, and the backlight driving conditions are 12.0±1.0V and 60mA. Under constant current testing, it provides an outstanding screen brightness of up to 1500±300 cd/m², ensuring excellent visual clarity. The module features a compact design with an overall thickness of just 3.15±0.3mm (including the cover glass) and adopts a robust iron-rubber integrated structure made of SUS201 stainless steel. To meet demanding industrial application requirements, this module offers superior environmental adaptability, with an operating temperature range from -30°C to +80°C and a storage temperature range from -40°C to +80°C.
Thanks to its ultra-high brightness, advanced anti-glare reflective technology, and wide-temperature design, it has become the most reliable Sun Readable Display for handheld terminals, smart outdoor devices, and industrial control panels.
Key Product Highlights of the Sun Readable Display
- Superior Sun Readable Display Performance：
The core advantage of this 2.4-inch TFT module is its ability to remain clearly visible under strong ambient light or direct sunlight. With backlight brightness as high as 1500±300 cd/m², combined with professional AG+AR (anti-glare and anti-reflection) surface treatment, it significantly reduces ambient reflected light and eliminates the “mirror effect” of the screen. This makes it a truly high-performance Sun Readable Display, ensuring accuracy and safety in outdoor operations. - Industrial-Grade Extreme Temperature Tolerance：
Unlike ordinary consumer electronics screens that may experience liquid crystal crystallization or failure under extreme heat or severe cold, this module features excellent wide-temperature characteristics. It supports an operating temperature range of -30°C to +80°C and a storage temperature range of -40°C to +80°C.
Pin Definition and Functions
This module uses a highly reliable 40-pin FPC plug-in flex cable with a pitch of 0.5mm. Hardware engineers can refer to the following detailed pin definitions for circuit design.
Backlight Driving Conditions
To achieve the ultra-high brightness of 1500 cd/m² and maintain true Sun Readable Display performance, precise control of the backlight drive circuit current is critical. The module requires constant current control.
- LCM operating voltage (VCI): 3.0V ± 0.3V
- Backlight forward voltage (Vf): 12.0V ± 1.0V
- Backlight forward current (If): 60mA
Industrial-Grade Application Scenarios
Thanks to its excellent outdoor strong light visibility, AG+AR anti-reflection layer, and wide-temperature operating characteristics, this 2.4-inch TFT LCD module is widely used in the following industries:
- Outdoor handheld terminals: portable high-precision GPS mapping instruments, rugged outdoor handheld tablets, agricultural and forestry inspection devices
- Automotive instruments: outdoor bicycle/motorcycle smart odometers
- New energy and charging piles: EV outdoor smart charging pile display terminals, two-wheel electric vehicle smart dashboards
Technical FAQ of the Sun Readable Display
Q1: What makes the TFT-H024A1QVISTKG40 an excellent Sun Readable Display?
A1: It is mainly achieved through the combination of two technologies: high-brightness backlight and optical anti-reflection. First, the module is equipped with an ultra-high brightness backlight system, delivering up to 1500±300 cd/m², which can directly suppress strong outdoor ambient light. Second, the screen surface integrates AG (anti-glare) and AR (anti-reflection) coatings. These not only diffuse localized glare caused by strong light but also significantly reduce light reflection off the glass surface, maintaining clear image contrast even under direct sunlight.
Q2: Can I drive this module with a small microcontroller with limited pins, such as an STM32 or Arduino, via SPI serial interface?
A2: Absolutely. Although the module supports up to 16-bit parallel bus (DB0-DB15) for maximum refresh speed, it is also designed with flexible mode switching. By changing onboard resistor combinations (e.g., soldering R1/R4/R6), you can configure the IM0 pins to 3-wire or 4-wire 9-bit serial interface (SPI mode). This reduces the data lines to standard SPI lines (SDI, SDO, CS, RS, etc.), greatly facilitating control by low-pin-count, low-cost MCUs.
