Aug, 2025

We’re excited to welcome you to the 180th edition of Raystar’s Newsletter! Join us as we celebrate this milestone with the latest breakthroughs in display technology and product innovation.

Contents in Issue No. 180

1. RS485 Modbus Smart Display with PCAP (GPIO Support)

2. [RL0F00039000FGFAASA00] 3.9-inch UART Smart Display with PCAP (GPIO Support)

3. [RFJ240L Series] 2.4-inch 240x320 High Brightness IPS TFT LCD Modules

4. [RFN02100A2 Series] 2.1-inch 480×480 Round IPS TFT LCD Modules

5. Discover Raystar’s Full Range of OLED Display Solutions!

6. 2025 CTSP Innovation Product Award

1. RS485 Modbus Smart Display with PCAP (GPIO Support)

Raystar’s RS485 Smart Display series offers versatile solutions for industrial and embedded applications, combining reliable communication, intuitive control, and user-friendly design.

The RL0F00043000WGDACSA00 and RL0F00050000FGDADSA00 both feature a projected capacitive touch screen (PCAP), 8-channel bi-directional GPIOs with 3.3V TTL logic, and a wide input voltage range of 5V–28V (typical 12V). Each display integrates 16MB of flash memory for storing fonts, images, and object dictionary data, supports multi-platform development—PC (via USB-to-CAN dongle), MCU, and Raspberry Pi—and includes built-in functions such as self-testing at startup, an embedded buzzer, and configurable GPIO via the Smart Display GUI Builder.

Designed for seamless integration, these RS485 Modbus smart displays deliver both reliability and flexibility, making them ideal for a wide range of industrial control, automation, and HMI projects. Whether for systems requiring a 4.3-inch panel or larger applications benefiting from a 5-inch display, Raystar’s RS485 Smart Display series offers an efficient and adaptable solution to meet diverse application needs.

[RL0F00043000WGDACSA00] 4.3-inch RS485 Modbus Smart Display with PCAP (GPIO Support)

	Model No. RL0F00043000WGDACSA00
	Size (Diagonal): 4.3-inch Resolution: 480 × 3(RGB) × 272 Module Dimension: 119.3(W) × 67.2(H) × 13.0(D) mm Active Area: 95.04(W) × 53.856 (H) mm Interface: RS485 Protocol: Modbus I/O(GPIO): Yes Brightness: 400 cd/㎡ Touch Panel: Projected Capacitive Touch Screen, PCAP View More Product Details

[RL0F00050000FGDADSA00] 5-inch RS485 Modbus Smart Display with PCAP (GPIO Support)

Model No. RL0F00050000FGDADSA00
Size (Diagonal): 5-inch Resolution: 800 × 3(RGB) × 480 Module Dimension: 132.7(W) × 75.8(H) × 12.5(D) mm Active Area: 108.0(W) × 64.8 (H) mm Interface: RS485 Protocol: Modbus I/O(GPIO): Yes Brightness: 400 cd/㎡ Touch Panel: Projected Capacitive Touch Screen, PCAP View More Product Details

2. [RL0F00039000FGFAASA00] 3.9-inch UART Smart Display with PCAP (GPIO Support)

Raystar is excited to introduce the RL0F00039000FGFAASA00, a 3.9-inch UART Smart Display designed to bring responsive touch control and streamlined connectivity to your projects. Equipped with a projected capacitive touch panel (PCAP) and GPIO support, it operates across a wide input voltage range of 5V to 48V. Communication is powered by proprietary UART protocol (default baud rate: 115200Kbps), ensuring smooth and reliable data exchange.

This new module also features built-in self-testing on boot, a host-controllable buzzer, and 16MB of external flash for storing fonts and object data. Compatible with PC (via USB-to-UART), MCU, and Raspberry Pi (PiCAN2), it offers a flexible, ready-to-deploy solution for developers seeking a compact, touch-enabled display that delivers both performance and ease of integration.

	Model No. RL0F00039000FGFAASA00
	Size (Diagonal): 3.9-inch Resolution: 480 × 128 × RGB (TFT) Module Dimension: 157 (W) × 42 (H) × 16 (D) mm Active Area: 95.04(W) × 25.34 (H) mm Interface: UART Protocol: Proprietary UART I/O(GPIO): Yes Brightness: Min: 700; Typ: 800 cd/㎡ Touch Panel: Projected Capacitive Touch Screen, PCAP View More Product Details

3. [RFJ240L Series] 2.4-inch 240x320 High Brightness IPS TFT LCD Modules

We are excited to introduce the RFJ240L Series—our latest 2.4-inch 240×320 portrait transmissive IPS TFT LCD modules, designed for applications that demand high brightness, wide viewing angles, and exceptional durability. Both modules in the series deliver 80° viewing in all directions with IPS technology, operate reliably in temperatures from -20°C to +70°C, and feature a long-life LED backlight rated for up to 30,000 hours. Built around the ILI9341V TFT controller IC, they ensure stable, vivid performance in both indoor and semi-outdoor environments.

The RFJ240L-AYH-DNN offers a 1000 cd/m² high brightness, making it ideal for handheld terminals, smart home devices, and industrial control equipments. The RFJ240L-AYH-DNG integrates a projected capacitive touch panel (PCAP) powered by the CF1124 IC over I2C, delivering a user-friendly interactive experience with 800 cd/m² brightness—perfect for space-saving devices, security monitoring systems, and other control applications. With their industrial-grade build and high-brightness output, the RFJ240L Series supports the success of your next project.

Model No.	RFJ240L-AYH-DNN	RFJ240L-AYH-DNG
Product Image
Size	2.4-inch
Resolution	240 × RGB × 320 (TFT)
Module Dimension	42.72 (W) × 60.26 (H) × 2.8 (D) mm	43.72 (W) × 61.26 (H) × 4.5 (D) mm
Active Area	36.72 × 48.96 mm
LCD Type	TFT, Normally Black, Transmissive
View Direction	80/80/80/80 (IPS)
Backlight Type	LED, Normally White
Controller IC	ILI9341V
Interface	MCU 8080 / SPI
Touch Panel	Without Touch Screen	Projected Capacitive Touch Screen, PCAP
Surface	Glare	Glare
Brightness	1,000 cd/㎡	800 cd/㎡
Operating Temperature	-20~+70 °C
	View More Product Details	View More Product Details

4. [RFN02100A2 Series] 2.1-inch 480×480 Round IPS TFT LCD Modules

Raystar introduces the RFN02100A2 Series, a new 2.1-inch round IPS TFT LCD solution designed for modern, small-form-factor applications. Featuring a 480 × RGB × 480 resolution, anti-glare surface, and ultra-wide 85° viewing angles in all directions, this series delivers exceptional clarity and readability. Powered by the ST7701 driver IC, it supports both 3-wire SPI and 18-bit RGB interfaces, offering flexibility for integration in a wide range of embedded designs. Built with a transmissive LCD structure and operating from -20°C to +70°C, the modules ensure reliable performance even in demanding environments, with a typical LED backlight lifetime of 30,000 hours.

Available in two versions, the standard RFN02100A2A0YWDNN00 focuses on display performance for applications such as smart home devices and industrial control panels, while the RFN0210AA2A0YWDNA00 adds a projected capacitive touch panel (PCAP) for interactive control. The PCAP version integrates the CST826 IC with I2C interface and adopts optical bonding technology to enhance touch accuracy, reduce reflection, and improve durability—making it ideal for high-performance HMI interfaces.

Delivering both versatility and quality, the RFN02100A2 Series is an ideal round display solution for consumer products, industrial systems, and other advanced embedded applications.

Model No.	RFN02100A2A0YWDNN00	RFN0210AA2A0YWDNA00
Product Image
Size	2.1-inch
Resolution	480 × RGB × 480 (TFT)
Module Dimension	56.18 (W) × 59.71 (H) × 2.30 (D) mm	71.27 (W) × 71.27 (H) × 3.43 (D) mm
Active Area	53.28 × 53.28 mm
LCD Type	TFT, Normally Black, Transmissive
View Direction	85/85/85/85 (IPS)
Backlight Type	LED, Normally White
Driver IC	ST7701
Interface	3-wire SPI + RGB 18-bit
Touch Panel	Without Touch Screen	Projected Capacitive Touch Screen, PCAP
Surface	Anti-Glare	Glare
Brightness	450 cd/㎡	430 cd/㎡
Operating Temperature	-20~+70 °C
	View More Product Details	View More Product Details

5. Discover Raystar’s Full Range of OLED Display Solutions!

Raystar is proud to introduce our complete OLED product series. Featuring self-emissive technology without the need for a backlight, our OLED displays are slimmer, more energy-efficient, and deliver exceptional performance with up to 175° viewing angles, high contrast, and ultra-fast response times. They are available in COG, COG+PCB, and COF structures (Only Graphic and Touch OLED Displays), with 6800, 8080, SPI, and I2C interfaces for flexible integration..

Ideal for consumer and industrial applications—from audio systems, automotive control panels, and medical devices to home automation—Raystar’s OLED solutions are designed and manufactured by a highly experienced team specializing in character, graphic, touch, and innovative OLED knob modules.

Our OLED product series now offers:

• Graphic OLED Displays – Resolutions from 48×64 to 256×64 in sizes from 0.49" micro OLED to 5.5" OLED.
• Character OLED Displays – Options from 8×2 to 40×2 in sizes from 1.2" micro OLED to 5.85" OLED.
• OLED Touch Displays – Capacitive touch option standard CTP, In-Cell CTP, and OCA CTP.
• OLED Knob Modules – Combining OLED display with rotary control for coffee machines, audio systems, and industrial controls.

Contact Us Now!

Raystar’s OLED team brings extensive expertise in design, manufacturing, and research, delivering high-quality OLED display modules. Ideal for applications from audio systems and automotive control panels to medical devices and home automation, these modules are the next best choice for your design.

View more OLED Display Modules or Contact Us today to explore how OLED can elevate your next project.

6. 2025 CTSP Innovation Product Award

We’re proud to announce that our Long-Lifetime Capacitive Touch OLED Display has been recognized with the 2025 CTSP Innovative Product Award.

This honor highlights Raystar’s expertise in compact OLED display modules and integrated capacitive touch technology—designed for performance and durability in embedded applications.

A heartfelt thank you to all our partners and customers for your continued support. We’ll keep innovating and delivering trusted quality in every display module.