3.0-Inch Bar-Type Monochrome TFT LCD Module – 320×120 with 3-Line SPI Interface

This 3.0-inch bar-type monochrome TFT LCD module features a 320×120 resolution with full 80° viewing angles and a 3-line SPI interface. It is designed for smart home control panels, audio equipment, automotive displays, and industrial HMI applications requiring high-contrast monochrome graphics with an elongated form factor. The anti-glare surface, ultra-low power consumption, and wide operating temperature range make it an excellent choice for space-constrained and power-sensitive applications.

Key Features

Monochrome Display – High-contrast single-color TFT for clear, readable text and graphics
Bar-Type Form Factor – 320×120 resolution optimized for smart home, audio, and industrial display applications
Full Viewing Angles – 80°/80°/80°/80° viewing angles for consistent image quality from all directions
3-Line SPI Interface – Simple serial interface for easy integration with most microcontrollers
Ultra-Low Power Consumption – 10mA typical current consumption, ideal for battery-powered and energy-conscious designs
Wide Operating Temperature – -20°C to +70°C for demanding environments
Anti-Glare Surface – Reduces reflections for improved readability in various lighting conditions
Normally Black TFT – High contrast ratio for crisp, clear monochrome display
50,000-Hour LED Backlight – Reliable long-life illumination for extended product lifespan
ST7512 Driver IC – High-performance driver optimized for monochrome TFT displays
No Touch Panel – Cost-effective solution for applications not requiring touch interaction

Technical Specifications

Parameter	Specification
Size	3.0-inch diagonal (Bar Type)
Dot Matrix	320 x Monochrome x 120
Module Dimension	86.35 (W) x 35.89 (H) x 7.2 (D) mm (Max.)
Active Area	72.0 (W) x 27.0 (H) mm
Pixel Pitch	0.225 x 0.225 mm
LCD Type	Monochrome TFT, Normally Black, Transmissive
Viewing Angle (L/R/U/D)	80°/80°/80°/80° (Full)
Interface	3-Line SPI
Driver IC	ST7512 or Equivalent
Backlight Type	LED, Normally White
Touch Panel	Without Touch Panel
Surface Treatment	Anti-Glare
Operating Temperature	-20°C to +70°C
Storage Temperature	-30°C to +80°C
Power Supply Voltage (VCC)	3.0V ~ 3.6V (Typ. 3.3V)
Current Consumption	10mA ~ 15mA (Typ. 10mA)
LED Voltage	1.62V ~ 3.4V (Typ. 2.65V)
LED Current	2 x 20mA (Typ.)
LED Life Time	50,000 Hours

Pin Interface

Pin	Symbol	I/O	Function
1,2,16,22	GND	P	Ground
3	RSTB	I	Reset Input (Active Low)
4,7-13,17,19,23,26,27,30	NC	–	No Connection
5	CSB	I	Chip Select (Active Low)
6	VSYNCO	O	Vertical Sync Output
14	SDA	I/O	Serial Data
15	SCL	I	Serial Clock
18	C86	I	Interface Select (Low = 3-Wire SPI)
20,21	VCC	P	Power Supply (3.3V)
24	LED1_C	P	LED Cathode 1
25	LED2_C	P	LED Cathode 2
28	LED1_A	P	LED Anode 1
29	LED2_A	P	LED Anode 2

Applications

This bar-type monochrome TFT LCD module is designed for a variety of consumer, automotive, and industrial applications where high-contrast monochrome graphics with elongated display format are required:

Smart Home Control Panels – Ideal for smart thermostats, home automation hubs, and control interfaces requiring clear monochrome displays
Audio Equipment – Perfect for DJ mixers, audio interfaces, studio equipment, and musical instruments
Automotive Displays – Suitable for aftermarket gauge displays, vehicle information panels, and instrument clusters
Industrial Control Panels – Elongated HMI interfaces for machine controls and process monitoring
Retail Displays – Digital shelf labels, price tags, and promotional information displays
Smart Appliances – Display panels for washing machines, refrigerators, and other smart home appliances
Medical Equipment – Compact displays for portable diagnostic devices and monitoring equipment

Customization Options

We offer flexible customization to meet specific project requirements:

Touch Panel – Resistive or capacitive touch panel integration available upon request
Brightness – Backlight brightness can be customized for different environments
Interface – Alternative interface options available depending on requirements
FPC – Custom FPC length, connector type, and pinout available
Operating Temperature – Extended temperature range versions available for automotive and industrial applications
Surface Treatment – Optional surface treatments including anti-glare or hard coating
LCM Assembly – Custom mechanical integration and housing solutions available

Selection Guide

When selecting this bar-type monochrome TFT LCD module for your project, consider the following factors:

Display Type – This is a monochrome TFT display, not a color display; ideal for applications requiring high-contrast text and graphics
Interface Compatibility – 3-Line SPI interface requires only 3 signal lines (CSB, SCL, SDA) for easy integration
Ultra-Low Power – Typical 10mA current consumption makes it ideal for battery-powered and energy-conscious designs
Power Requirements – VCC range 3.0V~3.6V with 3.3V typical; LED backlight requires 1.62V~3.4V at 2x20mA
Operating Environment – Temperature range -20°C to +70°C suitable for consumer and industrial applications
Touch Integration – No touch panel included, but available as a customization option if required
Mounting Space – Module dimension 86.35 x 35.89 mm with 7.2mm maximum thickness; verify mechanical clearance in your design

Frequently Asked Questions

Is this a color or monochrome TFT display?

This is a monochrome TFT LCD display, optimized for high-contrast text and graphic display applications. It displays in a single color with gray-scale capability.

What is the viewing angle of this monochrome TFT display?

This display offers full 80°/80°/80°/80° viewing angles, providing consistent image quality from all directions.

Does this module include a touch panel?

No, this version does not include a touch panel. It is designed as a display-only module for applications not requiring touch interaction. Touch panel integration is available as a customization option.

What interface does this display use?

The module uses a 3-line SPI interface with CSB, SCL, and SDA signals. The C86 pin must be tied low for 3-wire SPI interface mode.

What is the typical power consumption?

Typical current consumption is only 10mA at 3.3V VCC, making it ideal for battery-powered and energy-efficient applications.

What is the LED backlight lifetime?

The LED backlight has a typical operating life of 50,000 hours at 25°C.

Can you provide samples?

Yes, sample units are available for evaluation. Please submit your requirements through the sample request form.

Is driver support available?

Yes, we provide initialization code, datasheets, and technical support for integration. The ST7512 driver IC is well-supported with readily available driver libraries.