3.4" Round TFT LCD Touch Display | 800×800 MIPI IPS

Applications of 3.4-Inch Round TFT Touch Display

The 3.4 inch round TFT LCD with integrated capacitive touch is designed for compact, modern interfaces where traditional rectangular displays are not suitable. With its 800×800 resolution, MIPI interface, and G+G touch structure, this round touch display is widely used in the following applications:

● Smart Home Control Panels

Ideal for thermostats, HVAC controllers, and central home automation systems, where a round TFT LCD enhances product aesthetics while maintaining intuitive touch interaction.

● Smart Appliances & Kitchen Devices

Suitable for coffee machines, ovens, and high-end appliances that require a compact 3.4 inch round LCD with responsive touch and a clean UI design.

● Industrial Control Interfaces

Used in light industrial equipment and embedded control panels, where a round touch display enables space-efficient HMI integration without compromising usability.

● IoT & Smart Devices

Perfect for smart hubs, sensors, and connected devices that need a visually distinctive round TFT LCD module with multi-touch capability.

● Medical & Portable Devices

Applicable in portable diagnostic equipment and wearable-adjacent devices, where compact size, stable touch, and clear display performance are required.

Automotive	Payment Systems	Transportation	E-bike
Outdoor	Industrial Panels	Medical Equipment	Fitness Equipment
Engineering Plant	Motorbike	Vending Machine	Home Application

Customizations

To support different integration requirements across industrial, medical, and embedded systems, FANNAL provides flexible customization services for display, touch, and optical bonding.

1. Custom Display Options

LCD Panel

Size range: 1.77" – 15.6"

• Panel partners: BOE, Innolux, JDI, Hannstar, CTC, TCL, Tianma

• Panel technologies: IPS / TN / LTPS

• Operating temperature options

  • Industrial: –20°C ~ 70°C

  • Automotive: –30°C ~ 85°C

Interface Design

• Custom FPC shape, length, and pin definition

• Interface support: SPI / MCU / RGB / MIPI / LVDS / eDP

• Optional signal conversion for different host platforms

• EMI shielding and circuit optimisation for stable signal transmission

Backlight System

• Structure materials: metal / plastic / hybrid metal-plastic

• Brightness options: standard to ultra-high brightness

• Maximum brightness: up to 3000 cd/m² (sunlight readable)

• Backlight lifetime: up to 50,000 hours

Driver Board

• Interface options: RGB / VGA / HDMI / LVDS / DVI / Type-C

• Compatible with custom TFT LCD modules

• Optimised design for stable image transmission and long-term reliability

2. Custom Touchscreen Options

Touch Sensor

• Available sizes: up to 65 inches

• Sensor structures: G+G / G+F+F

• Designed for industrial and automotive environments

Supported touch features:

• Multi-touch

• Waterproof touch

• Glove touch

• Passive stylus

• Gesture control

• Palm rejection

Operating temperature options:

• Industrial: –20°C ~ 70°C

• Automotive: –30°C ~ 85°C

Touch Controller (IC)

• Supported IC partners: EETI, ILITEK, Goodix, FocalTech, Cypress, Microchip

• FANNAL in-house firmware tuning and touch optimisation

• Excellent anti-interference capability

• Designed for long-term industrial stability

• EMC engineering support for EMI/RFI compliance

Cover Lens

Material options:

• Glass: 0.55 – 10.0 mm

• PMMA: 0.5 – 3.0 mm

• PC: 0.1 – 1.0 mm

Custom cover design:

• CNC processing

• Hot bending

• 2.5D / 3D cover glass

• Ceramic printing

• PMMA integrated structures

Surface treatments available:

• AG / AR / AF (3A optical treatments)

• Anti-microbial coating

• Anti-explosion reinforcement

3. Optical Bonding Options

FANNAL provides multiple optical bonding technologies to improve display readability, durability, and environmental reliability.

Optical bonding helps:

• Improve sunlight readability

• Reduce internal reflection

• Increase impact resistance

• Enhance long-term reliability

About FANNAL

FANNAL, founded in 2011, is a specialist in touch display solutions, delivering high-quality products and technical services worldwide. We design and manufacture in-house custom Displays, PCAP touch screens, and optical bonding. Our solutions serve industrial, outdoor, medical, automotive and other applications.

We are a fast-growing high-tech company financially backed by SECO, a European leader in electronic devices and embedded computing. We hold ISO 9001, ISO 14001, ISO 45001, ISO 13485, and IATF 16949 certifications. Our products are REACH and RoHS compliant, with test reports or declarations available upon request.

With stable quality and engineering support, FANNAL helps customers stay competitive and differentiate their products globally.

Well-Experienced: 15 years of experience in TFT Displays, AMOLED Displays, Touch Displays, Capacitive Touchscreens, and Touch Monitors manufacturing.

One-Stop Solution: Full in-house process for touch screen, display, and optical bonding

Global Service: Italy, Germany, France, Spain, India, Japan, Singapore, and more —  timely local support.

Strong Background: Financially backed by SECO, a top European leader in embedded and display solutions.

Reliable Supply: Our long-term supplier network ensures you receive consistent quality and reliable delivery, even in high-demand seasons.

Quality Assurance: ISO 9001, ISO 14001, ISO 45001, ISO 13485 & IATF 16949 certified; REACH & RoHS compliant.

FAQ

1. Is this 3.4 inch round TFT LCD suitable for outdoor use?

This round TFT LCD is not ideal for direct sunlight environments. With a typical brightness of 550 nits, it is better suited for indoor or semi-outdoor applications. For outdoor use, higher brightness (≥1000 nits) and additional optical enhancements such as anti-reflection coating are typically required to ensure visibility.

2. What are the advantages of a round touch display compared to rectangular displays?

A round touch display offers superior design flexibility and visual differentiation. It enables circular UI layouts, making it ideal for applications like smart home controls and appliances. While rectangular displays maximize content area, round TFT LCDs are preferred where aesthetics, brand identity, and intuitive rotary-style interaction are important.

3. Does the 3.4 inch round LCD support customizations?

Yes, this round TFT LCD can be customized based on application requirements. Common options include cover glass thickness, surface treatments (AG/AF/AR), brightness adjustment, and interface tuning. For specific projects, mechanical structure and touch sensitivity can also be optimized to match different industrial or embedded system needs.

4. What should be considered when designing a UI for a round TFT LCD?

UI design for a round TFT LCD should prioritize circular layouts and content hierarchy. Unlike rectangular displays, corners are not available, so designers must avoid placing critical information near edges. Optimizing icon placement, font scaling, and touch zones ensures better usability and improves the overall experience of a round touch display.

5. How does optical bonding improve the performance of this round touch display?

Optical bonding significantly enhances display clarity and durability. By eliminating the air gap between the TFT and cover glass, it reduces internal reflections and improves contrast. For a round TFT LCD, this also increases structural strength and minimizes condensation risks, making it more reliable in demanding environments.

6. Is the MIPI interface compatible with all embedded systems?

MIPI interface requires compatibility with the host processor. It is commonly used in high-speed embedded systems such as ARM-based platforms. However, designers must ensure that their MCU or SoC supports MIPI DSI. If not, additional bridge ICs or alternative interfaces may be required for proper integration.