1.39 Inch 454*454 AMOLED Round LCD Module 500 Nits MIPI IPS

A compact 1.39 inch AMOLED round LCD module for smart watch and wearable displays

The 13901-454454MZ is a 1.39 inch AMOLED round LCD module with 454x454 resolution, MIPI interface and 500 nits brightness, designed for smart watch, wearable and compact IoT devices. With a normally black AMOLED panel, full-view IPS characteristics and integrated capacitive touch, this round display supports custom cover lens and touch configuration to match different wearable and smart home product requirements.

Why this 1.39 inch AMOLED round LCD module matters

Round displays match the mechanical design of many wearables, smart home controls and compact instruments, where a circular interface looks more natural than a square screen. The 1.39 inch AMOLED round LCD module combines high pixel density, deep black and wide viewing angle in a small outline.

• 454x454 resolution on a 1.39 inch diagonal delivers sharp icons, text and watch faces.
• AMOLED technology provides high contrast, deep black and vivid colors for premium user experience.
• 500 nits brightness ensures good visibility indoors and in moderate outdoor conditions.
• Full-view IPS-like viewing angle supports multi-position interaction on wrist-worn and wall-mounted devices.

How the MIPI interface and AMOLED panel work

MIPI (Mobile Industry Processor Interface) is a high-speed, low-power interface widely used in mobile and wearable displays. It allows the main processor to drive high-resolution screens with reduced pin count and power consumption compared with parallel RGB interfaces.

• MIPI interface simplifies PCB routing in space-constrained wearable and IoT designs.
• AMOLED pixel structure emits light per sub-pixel, enabling true black and high contrast ratios.
• Normally black mode further improves perceived contrast and reduces power in dark UI themes.

What to check before buying a round AMOLED display

When selecting a round LCD for a project, the key parameters are diameter, resolution, interface, brightness and mechanical fit.

• Confirm the available installation space against the module outline (φ43.60 × 3.04 mm) and active area (φ35.41 mm).
• Match the MIPI interface and pin definition with your mainboard; custom FPC length and connector can be arranged.
• Decide if you need a bare module or a solution with capacitive touch and cover lens already bonded.
• Check the operating temperature range (-20°C ~ +70°C) against your target application environment.

Key specifications of the 1.39 inch AMOLED round LCD module

Customization options for round AMOLED projects

RONDELI supports OEM and ODM customization on this 1.39 inch AMOLED round LCD module to help customers integrate the display into their own wearable and smart devices.

• Touch panel: capacitive touch with IIC interface; cover lens thickness and shape can be adjusted.
• Interface: MIPI pin definition, FPC length and connector type can be tuned to match customer mainboard.
• Branding: custom logo on cover lens or flexible cable for private-label smart watch and IoT products.
• Testing: additional reliability tests (temperature cycling, drop, ESD) can be arranged according to project requirements.

For deep customization (different outline, special optical bonding, unique driver IC or brightness level), RONDELI can evaluate feasibility based on target quantity and development timeline.

Typical applications of the 1.39 inch AMOLED round LCD module

This round AMOLED display is suitable for compact, circular interfaces in wearable, smart home and industrial devices.

• Wearables: smart watch faces, fitness trackers, health monitoring bands.
• Smart home: round control panels, smart thermostats, voice assistant devices with circular screens.
• Consumer electronics: round UI for portable gadgets, promotional devices and branded wearables.
• Industrial and medical: compact round indicators on handheld instruments and wearable monitoring devices.

Case example: round display for a smart watch brand

A consumer electronics brand was developing a new smart watch with a premium round display and custom UI.

Buyer Requirement: The buyer needed a 1.3–1.4 inch round AMOLED display with at least 450x450 resolution, good brightness for indoor and outdoor use, and multi-point capacitive touch.

Solution: RONDELI recommended the 13901-454454MZ 1.39 inch AMOLED round LCD module with 454x454 resolution, 500 nits brightness and MIPI interface. A custom cover lens with logo printing and anti-fingerprint coating was added to match the watch design.

Result: The final module provided sharp watch faces, deep black background and smooth touch response, and passed the customer’s drop and wear tests for mass production.

Frequently asked questions about this 1.39 inch AMOLED round LCD module

Q1: What is the resolution of this 1.39 inch AMOLED round LCD module?

The display has a 454 × (RGB) × 454 resolution, which is suitable for detailed watch faces and compact UI elements on a 1.39 inch diagonal.

Q2: Can this round AMOLED display work with my existing MIPI board?

In most cases, yes. RONDELI can adjust MIPI pin definition, FPC length and connector type to match your mainboard. Please share your board requirements for confirmation.

Q3: Is capacitive touch available for this 1.39 inch round LCD module?

Yes, a capacitive touch panel with IIC interface and multi-point support is available. Cover lens thickness, hardness and surface treatment can be customized.

Q4: What is the typical lead time for samples and mass production?

Sample lead time is usually around 2–3 weeks, depending on configuration. Mass production lead time is negotiated based on order quantity and customization level.

Q5: Can RONDELI support small MOQ for pilot projects?

Yes, RONDELI can support pilot orders for evaluation. Target MOQ and pricing will depend on the chosen configuration and any custom requirements.

About RONDELI Display

RONDELI Display is a manufacturer of TFT LCD modules, AMOLED round displays and touch panels for wearable, smart home and industrial applications. The company focuses on long-term supply, stable quality and engineering support for OEM and ODM projects. Products are shipped to customers in Europe, America, Asia and other regions, with support from initial selection to mass production.

Request a quote for the 1.39 inch AMOLED round LCD module

For OEM inquiries on this 1.39 inch AMOLED round LCD module, providing the following details helps speed up the quotation process:

• Target application (smart watch, wearable, smart home, industrial device, etc.)
• Required brightness and touch configuration (with or without cover lens)
• Interface and connector requirements (MIPI pin definition, FPC length)
• Estimated annual quantity and any custom branding or packaging needs

Samples are available prior to bulk order confirmation, with a typical lead time of approximately 2–3 weeks.