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Round Display
4-Inch Round Touch TFT LCD Display – 720*720 Resolution, 300 cd/m² Brightness, RGB Interface
Display and controller solution support for engineering-driven projects.
- LCD Size: 4.0 inches
- Touch Type: G+G Capacitive Touch
- Luminance: 300 cd/m² (Typical)
- Resolution: 720(RGB)x720 pixels
- Interface: RGB
Size(inch)
4.0
Resolution
720×720
Brightness (cd/m²)
300
Viewing Angle
All
For faster evaluation, please share your target application, display size, resolution, interface, touch requirement, controller board requirement, and annual demand.
Quick Review
Specification Snapshot
Selected products can be customized with options including cover glass, backlight, optical enhancement films, and touch solutions. Contact us for engineering support and customized display solutions.
Size(inch)
4.0
Resolution
720×720
Brightness (cd/m²)
300
Viewing Angle
All
Wide Temperature
No
Touch
Yes
Engineering Review
Confirm Product Fit Before Sampling
Display and controller board projects usually require more than a model number. RJY can review your technical requirements before sample or quotation discussion.
01
Specification Matching
Check display size, resolution, brightness, viewing angle, touch requirement, and operating environment.
02
Interface & Board Review
Review interface type, pin definition, controller board requirement, driver IC, and system compatibility.
03
Customization Direction
Discuss cover glass, backlight, touchscreen, FPC, firmware, and mechanical coordination when needed.
04
RFQ Preparation
Prepare application details, sample quantity, annual demand, target timeline, datasheet, or reference product.
The 4 inch round LCD is a high-resolution, full-viewing-angle display solution designed for advanced UI applications. With a 720×720 pixel resolution, a perfectly circular 101.52 mm active display area, and an integrated G+G capacitive touch panel, this module offers both aesthetic flexibility and robust interactive performance.
Ideal for next-generation devices such as smart home interfaces, coffee machines, automotive clusters, and medical equipment, this circular LCD combines elegant design with industrial-grade durability and performance.
| Item | Specification | Unit |
|---|---|---|
| LCD Size | 4.0 | inch |
| Display Mode | Normally Black | — |
| Resolution | 720 (RGB) × 720 | pixels |
| Pixel Pitch | 0.18(H) × 0.18(V) | mm |
| Pixel Arrangement | RGB Vertical Stripe | — |
| Viewing Direction | All Angle | — |
| Display Colors | 16.7M | — |
| LCD Active Area (AA) | 101.52 × 101.52 | mm |
| Touch Panel Viewing Area | 102.12 × 102.12 | mm |
| Module Dimensions (LCD) | 105.6 × 109.87 × 2.13 | mm |
| Module + CTP Dimensions | 128.75 × 126.75 × 5.75 | mm |
| Driver IC | FL7707 | — |
| Interface | RGB | — |
| Touch Structure | G+G | — |
| Touch Controller IC | CST3240 | — |
| Touch Points Supported | Multi-Touch | — |
| Surface Hardness | 6H | — |
| Backlight Type | White LED | — |
| Operating Temperature | –30°C ~ +85°C | °C |
| Storage Temperature | –30°C ~ +85°C | °C |
Key Features
True Round 4-Inch Display
720×720 resolution and symmetric circular design, perfect for stylish, space-efficient interfaces.IPS Technology with All-Angle Viewing
Delivers excellent color fidelity and visibility from every direction.High Durability Touch Panel
G+G structure with 6H surface hardness, ensuring longevity and scratch resistance in demanding environments.Industrial-Grade Temperature Range
Reliable operation from –30°C to +85°C for harsh outdoor or embedded scenarios.Smooth User Experience
Integrated CST3240 capacitive touch IC with multi-touch support enables fast, intuitive interactions.Slim and Lightweight Module
Compact thickness of just 2.13 mm (LCD only), adaptable for design-critical or portable devices.
Typical Applications
Smart Coffee Machines and Appliances
Round Smart Home Interfaces or Wall-Mounted HMI
Wearables or Portable Medical Devices
Automotive Cluster Displays
Fitness Equipment with Touch UI
Modern Industrial Control Panels
Request a Quote or Sample
Interested in integrating this 4 inch round LCD into your product line? Contact us now for datasheets, technical drawings, or engineering samples. Custom interface or brightness options available on request.
| Size(inch) | 4.0 |
|---|---|
| Resolution | 720×720 |
| Brightness (cd/m²) | 300 |
| Viewing Angle | All |
| Wide Temperature | No |
| Touch | Yes |
FAQ
Is RJY an Original Equipment Manufacturer (OEM)?
Yes. RJY is a direct provider and manufacturer with vertically integrated capabilities, offering full-cycle hardware innovation from design and PCBA assembly to final system integration.
What types of customization does RJY accept?
We can provide customization in the following four distinct areas: Systems & HMI、Display Modules、Software Services、Industrial Design.
What is the stock status for this product?
Most products on display have at least one unit in stock for testing or quick sampling. For sample requests over 20 units, please check with us in advance to ensure the current stock status.
How are the fees structured for custom projects?
Our custom project fees typically consist of two main components:
NRE (Non-Recurring Engineering) fees and unit pricing.
In many cases, if your order reaches a certain volume, we offer to offset or credit a portion of the NRE fees back to you.
NRE (Non-Recurring Engineering) fees and unit pricing.
In many cases, if your order reaches a certain volume, we offer to offset or credit a portion of the NRE fees back to you.
How long does a typical customization project take?
The timeline depends on the depth of customization:
Software/Firmware Tweaks: 1-2 weeks
Minor Hardware Modifications: 4-6 weeks
Full-Cycle R&D Projects: 12-16 weeks
Software/Firmware Tweaks: 1-2 weeks
Minor Hardware Modifications: 4-6 weeks
Full-Cycle R&D Projects: 12-16 weeks
Project Inquiry
Request Compatibility Review or Project Quote
Share your project requirements so RJY can review product fit, display matching, controller board configuration, and customization needs.
- Target application or device type
- Display size, resolution, and interface
- Touch, brightness, and cover glass needs
- Controller board or firmware requirements
- Operating environment and mechanical limits
- Sample quantity and annual demand
- Datasheet, drawing, or reference product
Knowledge Hub
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