1.6-Inch Round TFT LCD Module – 400×400 with 1-Lane MIPI Interface

This 1.6-inch round TFT LCD module features a 400×400 resolution, full 85° viewing angles, and a 1-lane MIPI DSI interface. It is designed for smartwatches, wearable devices, and compact IoT applications requiring high-resolution circular displays. The anti-glare surface and ultra-slim 1.94mm profile make it an excellent choice for space-constrained products.

Key Features

Round Form Factor – 1.6-inch circular active area with 400×400 resolution for high-density watch-type displays
Full Viewing Angles – 85°/85°/85°/85° viewing angles for consistent image quality from all directions
1-Lane MIPI Interface – High-speed serial interface for seamless integration with modern application processors
Ultra-Slim Profile – 1.94mm module thickness for space-constrained 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 – Excellent contrast and deep blacks for vivid imagery
Long-Life LED Backlight – 50,000 hours typical operating life for reduced maintenance
ST7797 Driver IC – Dedicated driver optimized for small circular TFT displays

Technical Specifications

Parameter	Specification
Size	1.6-inch diagonal
Dot Matrix	400 x RGB x 400
Module Dimension	42.94 x 45.89 x 1.94 mm
Active Area	39.84 x 39.84 mm
Pixel Pitch	0.0996 x 0.0996 mm
LCD Type	TFT, Normally Black, Transmissive
Viewing Angle	85°/85°/85°/85° (Full)
Interface	1-Lane MIPI DSI
Driver IC	ST7797 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
Digital Supply Voltage (VCI)	2.5V ~ 3.6V (Typ. 3.3V)
LED Voltage	2.8V ~ 3.4V (Typ. 3.2V)
LED Current	60mA (Typ.)
LED Life Time	50,000 Hours

Pin Interface

Pin	Symbol	Function
1,3,5,11,12	NC	No Connection
2	VLED-	Backlight Cathode
4	VLED+	Backlight Anode
6	VDD/VCI	Supply Voltage (3.3V)
7	IOVCC	I/O Power Supply
8	TE	Tearing Effect Output
9	RESET	External Reset Input
10,13,19,20	GND	Ground
14	MIPI_CLP	MIPI DSI Clock+
15	MIPI_CLN	MIPI DSI Clock-
17	MIPI_DOP	MIPI DSI Data+
18	MIPI_DON	MIPI DSI Data-

Applications

This round TFT LCD module is designed for a variety of consumer and industrial applications where high-resolution circular displays are required:

Smartwatches and Wearable Devices – The 400×400 resolution and round form factor deliver crisp, detailed watch-face displays
Portable Medical Devices – High resolution and slim profile suit compact health monitoring equipment
IoT Products – 1-Lane MIPI interface enables easy integration with modern application processors
Smart Home Appliances – Ideal for circular display panels on smart thermostats and control devices
Consumer Electronics – Perfect for compact, high-density display applications

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 industrial applications
Surface Treatment – Optional surface treatments including anti-reflective coating

Selection Guide

When selecting this round TFT LCD module for your project, consider the following factors:

Display Resolution – 400×400 provides sharp image quality suitable for high-density content like watch faces and icons
Interface Compatibility – 1-Lane MIPI DSI is ideal for modern processors; ensure your SoC supports MIPI DSI output
Power Requirements – VCI range 2.5V to 3.6V with separate IOVCC for flexible system integration
Operating Environment – Temperature range -20°C to +70°C suitable for consumer and mild industrial applications
Touch Integration – Touch panel not included, but available as a customization option
Mounting Space – Module dimension 42.94 x 45.89 mm with 1.94mm thickness; verify mechanical clearance

Frequently Asked Questions

What is the viewing angle of this TFT display?

This display offers full 85°/85°/85°/85° viewing angles, providing excellent visibility from all directions.

Does this module include a touch panel?

This version does not include a touch panel. However, touch panel integration is available as a customization option. Please contact our sales team for details.

What interface does this display use?

The module uses a 1-Lane MIPI DSI interface with differential clock (CLP/CLN) and data (DOP/DON) pairs.

What is the typical current consumption?

Typical current consumption is 10mA in normal operation mode, with a maximum of 20mA.

What is the LED backlight lifetime?

The LED backlight has a typical operating life of 50,000 hours.

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 ST7797 driver IC is well-supported with readily available driver libraries.