1.39" Round AMOLED Display 400x400 300nits 16.7M-Colors - MIPI
- 💹 Enjoy a 20% discount for orders over 500
- 📉 A 15% discount is available for orders ranging from 200 to 499
- 🎁 A 10% discount is available for orders ranging from 50 to 199
- 🎁 A 5% discount is available when ordering 10-49
Interested in customizing this product? Get in touch with us.
Order samples, immediate delivery.
Factory bulk lead time: 3 weeks.
1.39" Round AMOLED Display 400x400 300nits 16.7M-Colors - MIPI
- 💹 Enjoy a 20% discount for orders over 500
- 📉 A 15% discount is available for orders ranging from 200 to 499
- 🎁 A 10% discount is available for orders ranging from 50 to 199
- 🎁 A 5% discount is available when ordering 10-49
Resources & Downloads
1.39" Round AMOLED Display — 400 × 400, 300 nits, 16.7M Colors, MIPI Interface
A compact circular AMOLED module delivering vivid 16.7-million-color graphics at 400 × 400 resolution. Built for smartwatches, wearables, and smart devices that call for a premium round display experience with sharp detail and deep blacks.
Engineering resources are prepared for evaluation and design-in — official datasheet, 24-pin FPC pinout, driver IC reference for register-level review, initialization code example, and STEP 3D model. Verify driver IC compatibility and file applicability before firmware release or production sign-off.
Technical Specifications
| Technical Parameter | Specification |
|---|---|
| Product Model | DM-OLEDC139-654 |
| Display Type | Active Matrix OLED (AMOLED) |
| Panel Shape | Round / Circular |
| Diagonal Size | 1.39 inch |
| Resolution | 400 × 400 pixels |
| Display Colors | 16.7 million colors (24-bit RGB) |
| Typical Brightness | 300 cd/m² (nits) |
| Interface | MIPI DSI |
| Driver IC | Raydium RM69080 |
| Viewing Area | 35.4 mm × 35.4 mm (circular) |
| Module Dimensions | 38.6 mm × 40.5 mm × 0.7 mm |
| Supply Voltages | VCI 2.8 V typ. · VDDIO 1.8 V typ. · ELVDD 4.60 V typ. · ELVSS −2.40 V typ. |
| Touch Function | Not included in standard configuration — contact us for touch-enabled options |
Design-In Guide
Electrical Design
Plan the VCI, VDDIO, ELVDD and ELVSS power rails according to the datasheet typical values. Review reset timing, power-up sequence and MIPI signal integrity before PCB layout.
Firmware Bring-Up
Use the RM69080 example code path as the recommended starting point, then validate the MIPI initialization sequence on your target platform. Test sleep-out, display-on, image update and orientation commands before firmware release.
Mechanical Integration
Use the STEP model for enclosure design, fixture planning and optical stack-up review. Confirm FPC bend radius, connector height and circular cutout dimensions before mold tooling.
Resources & Customization
Engineering Resources
The DM-OLEDC139-654 resource package includes the official datasheet, 24-pin FPC pinout, driver IC reference, example initialization code, and a STEP 3D model — prepared for DM-OLEDC139-654 evaluation and design-in.
Touch & Custom Options
Beyond the standard configuration, we support touch panel integration, custom FPC length and connector types, cover lens sourcing, and volume production scheduling. Contact our engineering team early in your design cycle.
Samples & Evaluation
We recommend ordering evaluation samples early in your design cycle. Test them under your expected thermal, optical and electrical conditions before finalizing enclosure and PCB design for production sign-off.
Engineering Support
Our team is ready to help with integration questions — from selecting the right touch solution and adjusting FPC routing for a custom enclosure, to validating firmware timing and power sequencing.
Engineering Verification Checklist
Power & Timing Review
Before production design, verify VCI, VDDIO, ELVDD, ELVSS, reset timing and power-up sequence against the official datasheet and your board-level power design.
MIPI Bring-Up Validation
Confirm lane configuration, initialization command sequence, sleep-out timing, display-on timing, orientation commands and image update behavior on the target host platform.
Optical & Mechanical Sign-Off
Check brightness, viewing performance, cover-lens alignment, circular opening size, FPC bend radius, connector clearance and keep-out zones before enclosure tooling.
Applications
Wearables & Smartwatches
The round AMOLED format, 400 × 400 pixel density and 300-nits brightness make this panel a strong candidate for next-generation smartwatch and fitness-tracker displays.
Smart Home & IoT
Ideal for smart-home control panels, IoT hubs, thermostats and connected devices where a premium circular UI elevates user experience and brand perception.
Industrial & Instrumentation
Suitable for compact HMI panels, instrumentation readouts, status indicators and professional equipment requiring a small, high-visibility round display.
Frequently Asked Questions
Which example code should I use?
Use the RM69080 example code path as the recommended starting point for this product. Validate register settings, initialization timing, and display behavior on your own target platform before production firmware release.
Does it support touch input?
The standard DM-OLEDC139-654 configuration ships without a touch layer. If your project requires touch, contact us to discuss capacitive or resistive overlay options.
What voltages does this module require?
Beyond the 1.8 V I/O rail, the module needs VCI (~2.8 V), ELVDD (~4.6 V) and ELVSS (~−2.4 V). Refer to the official datasheet for the full power tree and sequencing requirements.
What should I check before enclosure tooling?
Use the STEP model and dimension drawing to confirm the circular opening size, cover-lens alignment, FPC bend radius budget, connector clearance and internal keep-out zones.
Can I get samples before volume ordering?
Yes. We recommend ordering evaluation samples early. Test them under your expected thermal, optical and electrical conditions before committing to tooling or production.
Why do the driver reference PDF filenames differ?
Some legacy driver-reference files may contain the filename "RM68090". For DM-OLEDC139-654, the product datasheet and example-code path identify the controller as RM69080. Confirm IC compatibility before register-level firmware development.
Download Resources
Download the DM-OLEDC139-654 engineering package for evaluation and design-in, including datasheets, 24-pin FPC information, driver IC reference, example code, and STEP 3D model. Verify file applicability, driver IC compatibility, and project requirements before production design.