RJY Display is excited to announce the launch of our new products: HMI display (serial port display)

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What exactly is a serial port (HMI) screen?

A serial port screen is a display that can be easily connected to a microcontroller or other device using a serial communication protocol. This allows for easy integration into a wide range of projects and applications, making it a versatile and valuable tool for many businesses and individuals.

Why should you consider using a serial port (HMI) screen?

The benefits are numerous. Serial port screens are easy to use, offer high-quality graphics and text, and can be customized to suit the specific needs of your project. They are also cost-effective and energy-efficient, making them a practical choice for a variety of applications.

We have developed two standard solution based on 2.8 and 2.1 inch round display.

The 2.1-inch and 2.8-inch versions offer the same great features as our other serial port screens, but with a unique circular design that is perfect for a variety of projects. Whether you are designing a new consumer product, industrial control system, or interactive display, these new products are sure to meet your needs. Please refer to below pictures for more specs.

Both of them are TFT LCD, 480*480 resolution, and based on SWM34SRET6. ( Left is 2.1 and right is 2.8)


RJOYTEK is a technology company that specializes in LCD modules and board development. We have a complete LCD module cutting, cleaning, chipping, and assembly production line. We also have an independent design team. Our factory has passed ISO9001, ISO14001, and ISO45001 certifications. We are capable of accepting large-scale ODM&OEM orders.

If you need further technical support, please feel free to contact us!

About RJY Display

We are a leading LCD panel manufacturer and display solution provider from China, dedicated to developing and producing high-performance, cost-effective, and highly reliable LCD panels. In addition, we deliver customized display solutions designed to meet the diverse needs of various HMI (Human-Machine Interface) applications. Our mission is to help customers reduce equipment maintenance risks while enhancing competitiveness in the marketplace. Whether you are exploring new display solutions or looking for long-term supply partners, our team is ready to provide free professional consultation, the latest product catalogs, and competitive quotations.

Why Choose RJY Display?

  • One-stop solutions: In addition to fully customized LCD modules, we also supply matching control boards, digital cables, and touch solutions—purchased together for seamless integration.

  • Customization flexibility: Product size, touch screen type, digital interface, and control board options can all be tailored to your specific project needs.

  • Certified quality: Our products and factories hold certifications including ISO9001, ISO45001, REACH, CE, ensuring compliance and reliability.

  • Strong production capacity: With two advanced factories, we guarantee fast lead times and efficient mass production to support your projects at every scale.

Partner with RJY Display for trusted display solutions, faster project delivery, and long-term business value.

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