2.7 Inch TFT LCD Display 320x320 Square Screen With ST7796 Controller
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The 2.7 Inch TFT LCD Display is a high-performance square-format display module engineered specifically for demanding medical monitoring applications. Featuring a 320x320 dot matrix resolution, this compact square TFT LCD delivers exceptional image clarity and precise visual reproduction in a unique 1:1 aspect ratio format that sets it apart from conventional rectangular displays.
Powered by the reliable ST7796 driver chip, this 2.7 inch TFT LCD display supports both MCU and SPI interfaces through a standard 40-pin FPC connector, offering exceptional flexibility for system integration. The display delivers impressive brightness of 750cd/m², ensuring excellent visibility even in bright clinical environments. With IPS technology providing ultra-wide viewing angles of U85/D85/R85/L85, this 2.7 inch TFT LCD maintains consistent color accuracy and contrast from virtually any perspective.
Engineered with industrial-grade durability, this 2.7 inch square TFT LCD display operates reliably across an extreme temperature range of -30℃ to +80℃, making it suitable for both indoor medical facilities and portable field applications. The module features robust anti-static ESD protection up to 8KV, safeguarding sensitive medical equipment against electrostatic discharge events.
Operating on a standard 3.3V power supply, this power-efficient 2.7 inch TFT LCD display integrates seamlessly into existing medical device architectures without requiring complex power management modifications. Whether you are designing patient monitors, diagnostic equipment, or portable medical instruments, this versatile 2.7 inch square display module provides the visual performance and reliability that medical applications demand.
Specification of the 2.7 Inch TFT LCD Display 320x320 Square Screen With ST7796 Controller
Key Advantages of the 2.7 Inch TFT LCD Display 320x320 Square Screen With ST7796 Controller
Superior Visual Performance – This 2.7 inch TFT LCD display delivers stunning 320x320 resolution with 750cd/m² brightness, ensuring crystal-clear image rendering in medical environments where visual accuracy is paramount. The IPS wide-viewing-angle technology guarantees consistent display quality even when viewed from extreme angles.
Medical-Grade Reliability – Engineered with rigorous quality standards, this 2.7 inch TFT LCD display features 8KV ESD protection and operates flawlessly from -30℃ to +80℃, ensuring dependable performance in diverse clinical settings.
Flexible Interface Options – Supporting both MCU and SPI interfaces through a 40-pin FPC connector, this 2.7 inch square TFT LCD display offers exceptional design flexibility for microcontroller platforms.
Unique Square Format – The distinctive 1:1 aspect ratio of this 2.7 inch TFT LCD display provides an ideal canvas for medical data visualization, particularly suited for displaying circular medical graphics and 360-degree monitoring data.
Recommended Applications of the 2.7 Inch TFT LCD Display
Medical Monitors – Primary display for bedside patient monitoring systems, vital signs dashboards, and telemetry equipment.
Diagnostic Instruments – Integrated display module for ultrasound devices, ECG/EKG machines, and blood analyzers.
Portable Medical Devices – Handheld patient assessment tools, wearable medical monitors, and emergency response equipment.
Surgical Equipment – Operating room displays, endoscopy monitors, and surgical navigation systems.
Industrial and Laboratory Instruments – Test and measurement equipment, analytical instruments, and quality control systems.
2.7 Inch TFT LCD Display – Pin Function Table (40-Pin FPC)
| Pin NO. | Symbol | Description |
|---|---|---|
| 1 | GND | Power supply ground |
| 2~6 | NC | Not connected |
| 7~8 | IOVCC | Power supply |
| 9 | SDI | - SPI interface input/output pin. Data is latched on the rising edge of the SCL signal. If not used, please fix this pin at "GND". |
| 10 | CS | Chip selection pin. Low enable. |
| 11 | RS | Display data (or parameter) / command (or register index) selection pin. |
| 12 | WR | Write enable in MCU parallel interface. In SPI mode, this pin is used as SCL. |
| 13 | RD | Read enable in parallel interface. In SPI mode, this pin is fixed at "GND". |
| 14~21 | DB[0~7] | Data bus. Fix these pins to "GND" when not in use. |
| 22~29 | DB[8~15] | Data bus. Fix these pins to "GND" when not in use. |
| 30 | RESX | Reset pin |
| 31 | NC | Not connected |
| 32 | TE | - Tearing effect signal is used to synchronize MCU to frame memory writing. If not used, leave this pin unconnected. |
| 33 | GND | Power supply ground |
| 34~36 | LEDK | LED cathode |
| 37 | NC | Not connected |
| 38 | LEDA | LED anode |
| 39 | NC | Not connected |
| 40 | GND | Power supply ground |
Backlight Summary
| Parameter | Value |
|---|---|
| Recommended Forward Voltage | 9.6V (Typ.) |
| Recommended Forward Current | 40mA (Typ.) |
| Typical Brightness | 750 cd/m² |
| LED Configuration | 3 LEDs in series (1-chip per LED) |
| Operating Temperature for Lifetime Rating | 25 ± 3 °C |
| Expected Lifetime | 30,000 hours (Typ.) |
This backlight specification is applicable to the 2.7 Inch Square TFT LCD Display. For optimal performance and longevity, it is recommended to drive the backlight at the typical forward voltage (9.6V) and current (40mA) values. The display achieves a high brightness of 750 cd/m², ensuring excellent visibility even in bright medical and industrial environments.
FAQS about the 2.7 Inch TFT LCD Display
How long is the LED backlight lifetime?
A: The typical LED lifetime for this 2.7 Inch TFT LCD Display is 30,000 hours (minimum 20,000 hours) when operated at Ta = 25 ± 3 °C. This translates to approximately 3.4 years of continuous 24/7 operation.
What ESD protection does this display offer?
A: This 2.7 Inch TFT LCD Display features 8KV ESD protection (anti-static), providing robust protection against electrostatic discharge events. This is particularly important for medical devices and industrial equipment that may be handled frequently.
What is the power supply voltage requirement?
A: The 2.7 Inch TFT LCD Display operates on a 3.3V power supply (IOVCC on pins 7–8), making it compatible with most modern microcontrollers including STM32, ARM Cortex, and 3.3V logic systems.
What is the typical response time?
A: While not specified in the standard datasheet, this 2.7 Inch TFT LCD Display—being an IPS TFT type—typically offers response times in the range of 10–25ms, suitable for most medical and industrial applications requiring real-time data updates.