2.8 display 480×640 ST7701 TFT LCD

2.8-inch 480×640 VGA TFT LCD — Available with options for bare screen, capacitive touch, or glass cover.

The TFT-H028B23 Series 2.8 display LCD module launched by HOTHMI is a high-performance small-size TFT LCD display product positioned for multiple scenarios such as industrial control, smart wearables, and handheld terminals. With a core specification of 480(RGB)×640 pixel high-definition resolution, it is equipped with a professional ST7701S driver chip and MIPI 2L high-speed interface, featuring ultra-narrow body, wide viewing angle, high brightness, strong reliability and other advantages. As a professional product in the 2.8-inch display field, this 2.8 display module adopts a preliminary standardized design, supporting flexible configurations such as non-touch screen/capacitive touch screen and glass panel.

While this display lacks touchscreen functionality and a glass cover, we can add touch functionality and a cover. We support custom cover glass (TFT-H028B23VGIST5G30), custom capacitive/resistive touchscreens, and custom FPCs. This product features IPS with a full viewing angle, ensuring excellent viewing quality from any angle. This makes it an ideal choice for projects that don’t require touch functionality but require portrait mode visual output.

The touchscreen model is the TFT-H028C2QVTST4C45, while the resistive touchscreen model is the TFT-H028A17QVTST2R37. These models come with an FPC cable that can be plugged in or soldered, allowing users to flexibly develop their own compatible control boards. They support development platforms such as Arduino and C8051. We also offer a 2.8-inch smart display with a driver board or a 2.8-inch SPI TFT LCD module with SPI communication. Users can easily assemble the display.

Core Product Highlights of 2.8 display LCD Module

• High-Definition Resolution + High-Quality Optical Performance

This 2.8 display module features a high-definition display specification of 480(RGB)×640 pixels, with an effective display area of 43.20(H)×57.60(V)mm. Equipped with a typical brightness of 550cd/m² (non-touch version), it achieves clear and delicate display effects in small-size panels. Optically, it has a wide viewing angle of U80/D80/R80/L80, with a viewing angle of 80 degrees in both horizontal and vertical directions, a typical contrast ratio of 1000:1, and a color gamut coverage of 71%.

• Compact Design + Flexible Configuration

The module has an overall dimension of only 46.10(H)*65.15(V)*1.81(D)mm. Its ultra-thin and light body design can greatly save internal space of equipment, adapting to the development of various miniaturized and portable products. At the same time, it provides flexible hardware configuration options, with a glass panel as standard, supporting two versions: non-touch screen and capacitive touch screen. The capacitive touch screen version has a surface hardness of 6H and a light transmittance of more than 80%, balancing operational feel and display transparency to meet the interactive design needs of different products.

• High Reliability + Comprehensive ESD Protection

The product has passed strict impact, vibration and electrostatic discharge (ESD) tests. It can withstand a 1/2 sine wave impact of 980m/s² for package impact, and the ESD protection reaches the industry high standard of ±4KV contact and ±8KV air, effectively avoiding mechanical damage and electrostatic breakdown during transportation and use. At the same time, the 2.8 display module adopts a normally black panel design, combined with professional suggestions to prevent image retention. The service life of the panel can be extended through regular refreshing or screen saver settings, meeting the needs of long-term uninterrupted work of industrial equipment.

Widely Application Scenarios of 2.8 display LCD Module

As a highly adaptable 2.8-inch small-size LCD module, the TFT-H028B23 Series can cover multiple fields such as industrial control, smart wearables, handheld terminals, smart home, medical equipment, automotive electronics, and consumer digital products with its advantages of high-definition display, compact design and strong reliability. The specific application scenarios are as follows:

• Industrial Control Field: Industrial handheld detectors, portable PLCs, industrial remote controls, small industrial control screens, etc. The wide temperature range and high reliability can adapt to the complex environment of industrial sites, and the wide viewing angle meets the viewing needs of operators from different angles;
• Smart Wearable Field: Smart watches, sports bracelets, portable walkie-talkies, etc. The ultra-thin and light design saves equipment space, and the high-definition resolution and fast response improve the display and operation experience of wearable devices;
• Handheld Terminal Field: Portable code scanners, handheld POS machines, mini data collectors, etc. The high brightness display is still clearly visible under strong outdoor light, and the MIPI high-speed interface ensures the real-time performance of data display;
• Medical Equipment Field: Portable medical detectors, mini blood pressure monitors, blood glucose meters, etc. The high image quality restores detection data, and the stable drive system ensures the accuracy of medical data display;

Frequently Asked Technical Questions and Answers about 2.8 display LCD Module

Q1: What interface and driver chip does the 2.8 display module adopt? Is a supporting driver module provided?

A1: The 2.8 display module adopts a MIPI 2L high-speed data interface, paired with a mature ST7701S TFT driver chip, ensuring stable data transmission and strong anti-interference ability. For backlight driving, the manufacturer provides a supporting backlight driver module MOD-B9284_V0-0, which supports 6~24V adaptive driving voltage, default 60mA driving current, maximum 300mA, and supports PWM pin to adjust brightness (0~2.8V DC voltage), greatly reducing customer debugging costs.

Q2: What configuration options are available for the 2.8 display module? What are the core parameters of the capacitive touch screen version?

A2: The 2.8 display module provides flexible configuration options, with aglass panel as standard, supporting two versions: non-touch screen and capacitive touch screen. The core parameters of the capacitive touch screen version are: surface hardness 6H (pencil hardness), light transmittance ≥80%, digital power supply VDD and I/O power supply IOVDD both support 2.8~3.6V, and the operating temperature is the same as the module, -20℃~+70℃, balancing operational feel, display transparency and environmental adaptability.

Q3: What are the electrical voltage requirements for the 2.8 display module?

A3: The electrical voltage requirements of the 2.8 display module are: digital power supply VCI minimum 3.0V, maximum 3.6V; interface operating voltage IOVCC minimum 1.75V, maximum 3.3V. The wide voltage design can adapt to the power supply systems of different equipment.