1.39" Round AMOLED Display 454x454 16.7M-Colors Capacitive - MIPI, SPI

350 cd/m² Typical Luminance

The listed typical brightness is suitable for compact user interfaces where high pixel density and circular display shape are more important than large viewing area.

454×454 Circular Pixel Layout

The square pixel matrix is used inside a round active area, allowing UI designers to build circular watch faces, icon rings, dashboard meters, and compact status panels.

All-Direction Viewing

The viewing direction is specified as all directions, which helps products that may be rotated during use, such as smartwatches, handheld controllers, and round industrial displays.

MIPI Interface

MIPI is suitable for application processors and wearable platforms that require higher display data throughput and more integrated display control.

Use this option when the host platform already supports a display pipeline and when the product UI requires smooth graphic rendering.

SPI Interface

SPI is practical for MCU-based devices, compact instruments, and products where the display UI is lighter and the system design needs a simpler connection path.

Use this option for compact embedded products that prioritize hardware simplicity and controlled screen update areas.

Capacitive Touch Controller

The touch controller is TMA525B. The capacitive touch panel supports direct user interaction for round menus, touch buttons, sliders, and compact wearable UI controls.

For final hardware design, check the official touch controller datasheet for exact electrical characteristics and touch interface details.

The active area is 35.41 × 35.41 mm, and the complete module outline is 42(H) × 42.6(W) × 2.227(D) mm. These dimensions are suitable for compact circular product designs where thickness, front opening, and inner housing space must be controlled.

Recommended mechanical checks before mass production include front cover opening tolerance, display centering, FPC bending space, touch panel clearance, adhesive thickness, and fixture pressure around the display edge.

The diagram on this page is for layout reference only. Use the official datasheet and STEP file for final mechanical design, tooling confirmation, and enclosure verification.

Electrical Confirmation

Confirm 3.3V supply design, interface selection, initialization code, grounding, FPC connection, and host-side display timing before PCB layout release.

Thermal Range

The specified operating range is -20°C to +60°C. Validate enclosure temperature rise under maximum brightness and continuous display operation.

Mechanical Assembly

Check the round cover lens opening, adhesive position, pressure distribution, display alignment, and bending radius of the FPC area.

Touch Validation

Validate touch response after cover lens bonding, especially around the circular edge and high-frequency UI operation areas.

Smart Wearables

Suitable for smartwatches, fitness trackers, compact health monitors, and round consumer electronics that need a circular 454×454 touch display.

Round HMI Panels

Suitable for rotary interfaces, control knobs, compact dashboard screens, and industrial UI modules requiring a round screen format.

Portable Instruments

Suitable for compact measurement devices, handheld controllers, monitoring terminals, and embedded status displays.

Medical Device Displays

Suitable for portable medical equipment display interfaces after the customer completes product-level compliance, safety, and reliability validation.

Sample Evaluation

Use the datasheet, IC documentation, initialization code, and STEP file to evaluate electrical connection, software bring-up, enclosure structure, and touch operation before confirming mass production.

OEM Custom Options

Available project discussion can include interface configuration, FPC adjustment, cover lens matching, packaging requirement, and volume order planning based on the final product structure.

Technical Review

For production projects, engineers should review the display datasheet, SH8601A drive IC datasheet, TMA525B touch controller datasheet, and mechanical STEP file together.

Does this module include a touch panel?

Yes. The listed touch technology is capacitive touch panel, and the touch controller is TMA525B.

Which interface should be selected, MIPI or SPI?

MIPI is usually selected for application processors and higher UI data throughput. SPI is usually selected for MCU-based products with simpler display update requirements. Final selection depends on the host platform and product UI workload.

What should be checked before enclosure design?

Check active area, module outline, cover opening, display centering, FPC bending space, adhesive thickness, and the round display edge clearance.

Is this display suitable for outdoor products?

The typical luminance is 350 cd/m². Outdoor readability should be validated with the final cover lens, brightness setting, UI color design, and product installation angle.

What documents are available for development?

Available resources include display module datasheet, SH8601A drive IC datasheet, TMA525B touch controller datasheet, SH8601A initialization code example, and STEP mechanical file.

Additional Engineering Files

SH8601A Drive IC Datasheet | TMA525B Touch Controller Datasheet | SH8601A Initialization Code | STEP Mechanical File