3.4″ Round TFT LCD Module – 800×800 4-Lane MIPI Interface
3.4-inch round TFT LCD display module featuring 800×800 resolution, full 85° viewing angles, and 4-lane MIPI DSI interface. ILI9881C driver IC with ultra-slim 2.22mm profile, anti-glare surface, and wide operating temperature range (-20°C to +70°C). Ideal for smartwatches, wearable devices, industrial HMIs, and high-end IoT products requiring premium circular displays.
3.4-Inch Round TFT LCD Module – 800×800 with 4-Lane MIPI Interface
This 3.4-inch round TFT LCD module features an 800×800 resolution, full 85° viewing angles, and a 4-lane MIPI DSI interface. It is designed for premium smartwatches, wearable devices, industrial HMIs, and high-end IoT applications requiring large circular displays with exceptional image quality. The anti-glare surface and ultra-slim 2.22mm profile make it an excellent choice for space-constrained products requiring a premium viewing experience.
Key Features
- Premium Large Round Form Factor – 3.4-inch circular active area with 800×800 resolution for high-density watch-type and HMI displays
- Full Viewing Angles – 85°/85°/85°/85° viewing angles for consistent image quality from all directions
- 4-Lane MIPI DSI Interface – High-speed serial interface for seamless integration with modern application processors
- Ultra-Slim Profile – 2.22mm 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
- ILI9881C Driver IC – High-performance driver optimized for large circular TFT displays
- Separate Analog and Logic Power Supplies – VCI for analog (2.5V~3.6V) and IOVCC for logic (1.65V~3.3V) for flexible system integration
Technical Specifications
| Parameter | Specification |
|---|---|
| Size | 3.4-inch diagonal |
| Dot Matrix | 800 x RGB x 800 |
| Module Dimension | 94.9 x 96.95 x 2.22 mm |
| Active Area | 87.6 x 87.6 mm |
| Pixel Pitch | 0.1095 x 0.1095 mm |
| LCD Type | TFT, Normally Black, Transmissive |
| Viewing Angle | 85°/85°/85°/85° (Full) |
| Interface | 4-Lane MIPI DSI |
| Driver IC | ILI9881C 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 |
| Analog Supply Voltage (VCI) | 2.5V ~ 3.6V (Typ. 3.3V) |
| Logic Supply Voltage (IOVCC) | 1.65V ~ 3.3V (Typ. 1.8V) |
| VCI Current | 20mA ~ 30mA (Typ. 20mA) |
| IOVCC Current | 20mA ~ 30mA (Typ. 20mA) |
Pin Interface
| Pin | Symbol | Function |
|---|---|---|
| 1 | VLED+ | LED Backlight Anode |
| 2,3 | VLED- | LED Backlight Cathode |
| 4 | VCI | Analog Power Supply (3.3V) |
| 5 | IOVCC | Logic I/O Power Supply (1.8V/3.3V) |
| 6 | RESET | Reset Signal (Active Low) |
| 7 | TE | Tearing Effect Output |
| 8,25-30 | NC | No Connection |
| 9,12,15,18,21,24 | GND | Ground |
| 10 | D0P | MIPI Data Lane 0 Positive |
| 11 | D0N | MIPI Data Lane 0 Negative |
| 13 | D1P | MIPI Data Lane 1 Positive |
| 14 | D1N | MIPI Data Lane 1 Negative |
| 16 | CLKP | MIPI Clock Positive |
| 17 | CLKN | MIPI Clock Negative |
| 19 | D2P | MIPI Data Lane 2 Positive |
| 20 | D2N | MIPI Data Lane 2 Negative |
| 22 | D3P | MIPI Data Lane 3 Positive |
| 23 | D3N | MIPI Data Lane 3 Negative |
Applications
This round TFT LCD module is designed for premium consumer, industrial, and commercial applications where large circular displays with exceptional image quality are required:
- Premium Smartwatches and Wearable Devices – The 3.4-inch size and 800×800 resolution deliver an immersive, high-end watch-face experience
- Industrial HMIs – Large circular display ideal for control panels, machine interfaces, and operator terminals
- Portable Medical Devices – High resolution and slim profile suit advanced health monitoring equipment
- Automotive Displays – Suitable for aftermarket circular displays, instrument clusters, and vehicle HMIs
- IoT Products – 4-Lane MIPI interface enables high-speed video output for premium IoT applications
- Smart Home Appliances – Ideal for circular display panels on smart thermostats, control hubs, and appliances
- Consumer Electronics – Perfect for high-end, compact display applications requiring fast image updates
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 or hard coating
- LCM Assembly – Custom mechanical integration and housing solutions available
Selection Guide
When selecting this round TFT LCD module for your project, consider the following factors:
- Display Resolution – 800×800 provides premium image quality suitable for high-density content like watch faces, maps, and complex graphical interfaces
- Interface Compatibility – 4-Lane MIPI DSI requires a host processor with MIPI DSI support; ensure your SoC has sufficient data lanes (up to 4 lanes)
- Refresh Rate – MIPI interface enables high-speed frame updates ideal for animation, video, and interactive UI elements
- Power Requirements – Separate VCI (2.5V~3.6V) and IOVCC (1.65V~3.3V) supplies for flexible system integration; typical current 20mA each
- Operating Environment – Temperature range -20°C to +70°C suitable for consumer and industrial applications
- Touch Integration – Touch panel not included, but available as a customization option
- Mounting Space – Module dimension 94.9 x 96.95 mm with 2.22mm thickness; verify mechanical clearance in your design
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 4-Lane MIPI DSI interface with differential clock and data pairs, supporting high-speed video transmission for premium display applications.
What is the typical power consumption?
Typical current consumption is 20mA for VCI and 20mA for IOVCC during normal operation.
What power supply voltages are required?
The module requires two power supplies: VCI (2.5V~3.6V, typical 3.3V) for the analog circuit, and IOVCC (1.65V~3.3V, typical 1.8V) for the logic and I/O circuit.
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 ILI9881C driver IC is well-supported with readily available driver libraries.
What is the MOQ for mass production?
MOQ depends on specific configurations. Please contact our sales team for current MOQ information.
Related Resources
- TFT LCD Modules
- Round Displays
- MIPI Interface Displays
- LCD Interface Selection Guide
- Customization Services
For volume pricing, customization, or engineering support, please contact our sales team.
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