2.7 Inch Square LCD Display With ST7796

2.7 inch square LCD display 320×320 Sunlight viewable

TFT-H027A01HQINV4N40 is a high-performance 2.7-inch Square LCD Display module, featuring ultra-high brightness (typical 750 cd/m²) and an IPS design for full viewing angles. It is widely used in industrial control, smart home, medical equipment, and other fields. This module supports a standard MCU parallel interface and has a resolution of 320×320 pixels, enabling clear presentation of detailed images and text, meeting the human-machine interface display needs of various embedded systems.

This display utilizes advanced IPS full-viewing angle technology, offering excellent color reproduction and stable picture quality, ensuring that images maintain high contrast and true colors when viewed from different angles. The typical brightness of 750 cd/m² ensures excellent readability in strong outdoor light environments without the need for additional shading. The module is equipped with an ST7796 driver IC and supports PWM dimming function, allowing flexible adjustment of backlight brightness according to ambient light changes, suitable for stable use under various lighting conditions.

Product Applications

• Industrial Control & Automation Equipment: In industrial environments, the TFT-H027A01HQINV4N40 can serve as a device status display terminal, presenting operating parameters and alarm information in real time. Its 750 cd/m² ultra-high brightness ensures screen content remains clearly readable, even in bright workshop lighting.
• Smart Home Terminals: Suitable for smart panels, thermostats, central control screens, etc. With its IPS full-viewing angles and high brightness display, it provides a consistent visual experience regardless of the viewing angle.
• Medical & Healthcare Devices: Can be used in portable medical instruments (such as monitors, handheld diagnostic devices), offering clear display and true colors. The high brightness characteristic is particularly important for outdoor emergency or strong light environments.
• Handheld Terminals & Consumer Electronics: In products like POS machines, two-way radios, and handheld terminals, its 750 cd/m² high brightness and standardized interface ensure clear visibility under outdoor sunlight, facilitating quick integration and development.

Product Highlights

IPS Full-Viewing Angle Technology

Viewing angles exceed 80 degrees in all directions (up/down/left/right). Color saturation and contrast remain consistent from different angles, ideal for multi-user or variable viewing angle scenarios.

750 cd/m² High Brightness, Truly Sunlight Readable

The module’s typical brightness reaches 750 cd/m², far exceeding ordinary TFT screens. Even under direct, strong outdoor sunlight at noon, the displayed content remains sharp and clear, perfectly suiting demanding applications like outdoor equipment and in-vehicle displays. This square LCD display excels in such environments.

Built-in ST7796 Driver IC, Strong Interface Compatibility

Integrates the mature and stable ST7796 controller, supporting standard MCU parallel interfaces and compatible with mainstream 8/9/16/18-bit data buses. Rich development resources facilitate quick porting and debugging. Developers frequently utilize this square LCD display for its ease of integration.

Industrial Grade Reliability & Wide Temperature Operation

Operating temperature range is -20℃ to +70℃, storage temperature -30℃ to +80℃, suitable for applications requiring high stability, such as industrial control and outdoor equipment. The robust nature of this square LCD display ensures reliable performance.

Supports PWM Dimming, Flexibly Adapts to Various Environments

Users can flexibly control backlight brightness by adjusting the PWM duty cycle. Brightness can be reduced at night or indoors to save power, and adjusted to maximum outdoors to ensure visibility. This makes the square LCD display versatile for different lighting conditions.

Technical FAQs

Q1: What is the resolution of this display? What kind of content is it suitable for displaying?

A: The resolution is 480×240 pixels, which is a relatively high specification for a 2.7-inch screen. It is suitable for displaying device status interfaces, menu options, simple waveform graphs, text information, etc., meeting the needs of most industrial control and consumer applications. This makes the square LCD display a versatile choice.

Q2: What exactly is the brightness of this screen? Is it suitable for outdoor use?

A: The typical brightness of this module is 750 cd/m², which is a very high level. Ordinary TFT screen brightness usually ranges from 250-400 cd/m². The 750 cd/m² rating means it is exceptionally well-suited for outdoor strong light environments, such as outdoor charging piles, shared equipment terminals, in-vehicle instruments, etc., ensuring clear display without additional shading. The performance of this square LCD display in sunlight is a key feature.

Q3: Is it convenient to develop with the ST7796 driver IC?

A: The ST7796 is a mature TFT driver IC supporting standard MCU interfaces, with comprehensive development resources available. Developers can refer to the manufacturer’s initialization code and reference circuits, and can also find abundant open-source driver examples in communities like Arduino and STM32, allowing for a relatively quick start. Its widespread use ensures good support for this square LCD display.

Q4: Does this module support Chinese or multi-language display?

A: Yes. Because it uses dot-matrix graphic display, users can load custom fonts via the main control chip to achieve mixed display of Chinese, English, numbers, and symbols, meeting multi-language interface requirements. This flexibility is a major advantage of using this square LCD display.