1.28 Inch Round LCD Display 240x240, SPI MCU, Touch Panel for Smart Rotary Knob

A compact 1.28 inch round LCD display for smart rotary knob, smart home and wearable devices

The R13006-240240ST-TP is a 1.28 inch round LCD display with 240x240 resolution, SPI MCU interface and IPS technology, designed for smart rotary knob switches, smart home controls and wearable devices. This circular TFT LCD module with optional capacitive touch panel integrates display and touch functions in a compact outline, making it suitable for space-constrained and battery-powered applications.

Why this 1.28 inch round LCD display matters

In smart rotary knob and wearable applications, displays must be small, power-efficient and easy to integrate while still providing clear circular UI and status information. The 1.28 inch round LCD display combines moderate resolution, common driver IC and simple SPI interface in a compact outline suitable for battery-powered and space-constrained products.

• 240x240 resolution on a 1.28 inch diagonal provides clear icons, status lines and simple UI elements.
• Round format matches the mechanical design of smart rotary knobs and circular control panels.
• 300 nits brightness and normally black mode support clear visibility in indoor environments.
• SPI MCU interface simplifies integration with common microcontrollers and embedded systems.

How the SPI MCU interface and touch panel work

The SPI interface is a simple, low-power serial interface widely used in small TFT modules. It allows a single controller to drive the display with minimal wiring and low power consumption. The optional capacitive touch panel uses an IIC interface to communicate with the host controller, enabling touch interaction on top of the circular display.

• SPI interface reduces signal lines while maintaining good update performance for text and simple graphics.
• GC9A01 driver IC supports standard SPI communication and is widely supported by MCU platforms.
• Optional capacitive touch panel with IIC interface enables touch and gesture interaction for smart rotary knob designs.

What to check before buying a 1.28 inch round LCD display

When selecting a 1.28 inch round display for a project, the key parameters are resolution, interface, mechanical fit and touch requirements.

• Confirm the available installation space against the LCM outline (35.6 × 38.1 × 1.6 mm) and active area (32.4 × 32.4 mm).
• Match the SPI MCU 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 panel and cover lens already bonded.
• Check the operating temperature range (-20°C ~ +70°C) against your target application environment.

Key specifications of the 1.28 inch round LCD display

Customization options for 1.28 inch round LCD projects

RONDELI supports OEM and ODM customization on this 1.28 inch round LCD display to help customers integrate the screen into their own smart rotary knob, smart home and wearable devices.

• Touch panel: optional capacitive touch with IIC interface; touch IC and sensitivity can be adjusted.
• Cover lens: custom thickness, shape and logo printing for branded devices.
• Interface: SPI pin definition, FPC length and connector type can be tuned to match customer mainboard.
• 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 1.28 inch round LCD display

This compact 1.28 inch round TFT LCD module is suitable for circular interfaces in smart home, wearable and IoT devices.

• Smart rotary knob switches: circular UI for smart home control, lighting and HVAC adjustment.
• Wearables and IoT: small round displays on fitness trackers, smart bands and portable gadgets.
• Smart home panels: circular control interfaces for thermostats, lighting controls and voice assistant devices.
• Industrial and consumer: compact round indicators on handheld instruments and promotional devices.

Case Study: Round display for a smart rotary knob switch

A smart home company was developing a new rotary knob switch with a circular display for lighting and climate control.

Buyer Requirement: The buyer needed a 1.28 inch round display with at least 240x240 resolution, SPI interface and capacitive touch for intuitive interaction.

Solution: RONDELI recommended the R13006-240240ST-TP 1.28 inch round LCD display with 240x240 resolution, SPI MCU interface and optional capacitive touch panel. A custom cover lens with logo printing was added to match the knob design.

Result: The final module provided clear circular UI and status indicators, smooth touch and gesture response, and reliable performance in long-term smart home use.

Frequently asked questions about this 1.28 inch round LCD display

Q1: What is the resolution of this 1.28 inch round LCD display?

The display has a 240 × (RGB) × 240 resolution, which is suitable for clear circular UI, icons and status indicators on a 1.28 inch diagonal.

Q2: Can this round LCD display work with my existing SPI MCU?

In most cases, yes. The SPI interface and GC9A01 driver are widely supported by common microcontrollers. Please share your MCU and voltage requirements for confirmation.

Q3: Is capacitive touch available for this 1.28 inch round LCD module?

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

Q4: Is this display suitable for smart rotary knob switches?

Yes. The 1.28 inch round format, SPI MCU interface and optional capacitive touch make this module ideal for smart rotary knob switches and circular control panels.

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 round TFT LCD modules, touch panels and display solutions for smart home, wearable and IoT 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 1.28 inch round LCD display

For OEM inquiries on this 1.28 inch round LCD display, providing the following details helps speed up the quotation process:

• Target application (smart rotary knob, smart home, wearable, IoT device, etc.)
• Required interface (SPI MCU) and touch configuration (with or without cover lens)
• 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.