June, 2025
Welcome to the latest edition of Raystar’s Newsletter, featuring updates in display technology and product innovation.
- Contents in Issue No. 178
- 1. Smart Display Series: Reliable CAN bus Modules with GPIO and PCAP
- 2. [RL0F00039000FGDAASA00] 3.9-inch RS485 Modbus Smart Display with PCAP (GPIO)
- 3. New COG Graphic LCD Modules: RX32032A, RX240128C, and RX320240H
- 4. Explore the Multi-application Uses of OLED Knob Modules
- 5. Upgrade User Interaction Experience with Our PCAP TFT Modules Series
- 6. Earth Day Event: Second-hand Market for a Sustainable Tomorrow
1. Smart Display Series: Reliable CAN bus Modules with GPIO and PCAP

The Smart Display product series includes three modules: 3.9-inch RL0F00039000FGAAASA00, 4.3-inch RL0F00043000WGAAESA00, and 5-inch RL0F00050000FGAAGSA00. These displays are designed for industrial and embedded system applications, supporting input voltage ranges from 5V to 48V (3.9-inch) or 5V to 28V (4.3-inch and 5-inch).
Each module features a CANbus communication interface with either a Custom CAN ID protocol (3.9-inch) or CANopen protocol (4.3-inch and 5-inch), defaulting to a 250Kbps baud rate. Integrated 16MB flash memory provides storage for fonts, object dictionary data, and images.
All modules include projected capacitive touch screens (PCAP), self-testing after boot, embedded buzzers, GPIO functionality, and support for multiple platforms such as computers (via USB-to-CAN dongle), MCUs, and Raspberry Pi (with PiCAN2).
| Model No. |
RL0F00039000FGAAASA00 |
RL0F00043000WGAAESA00 |
RL0F00050000FGAAGSA00 |
| Product Image |
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| Size(Diagonal) |
3.9-inch |
4.3-inch |
5-inch |
| Resolution |
480 × 128 dots |
480 × 272 dots |
800 × 480 dots |
| Module Dimension |
157.0 (W) × 42.0 (H) × 16.0 (D) mm |
119.3 (W) × 67.2 (H) × 13.0 (D) mm |
132.7 (W) × 75.8 (H) × 12.5 (D) mm |
| Active Area |
95.04 × 25.34 mm |
95.04 × 53.856 mm |
108.0 × 64.8 mm |
| Interface |
CAN bus |
| Protocol |
Custom CAN ID + GPIO |
CANopen + GPIO |
| Bitghyness |
800 cd/㎡ |
400 cd/㎡ |
| Touch Panel |
Projected Capacitive Touch Screen, PCAP |
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View More Product Details |
View More Product Details |
View More Product Details |

2. [RL0F00039000FGDAASA00] 3.9-inch RS485 Modbus Smart Display with PCAP (GPIO)

The RL0F00039000FGDAASA00 is a 3.9-inch RS485 Modbus smart display module featuring a projected capacitive touch panel (PCAP) for intuitive user interaction. The module supports a wide input voltage range from 5V to 48V (typical 5V), ensuring compatibility with diverse systems. It integrates a built-in 16MB flash memory for storing fonts and object dictionary data, and includes a self-testing function at startup.
The embedded buzzer can be controlled by the master device, and GPIO pins are provided for additional control needs. The module supports versatile integration across multiple platforms, including computers (via USB to CAN dongle), MCUs, and Raspberry Pi (via PiCAN2).
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RL0F00039000FGDAASA00
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3. New COG Graphic LCD Modules: RX32032A, RX240128C, and RX320240H

This section introduces three monochrome COG (Chip-on-Glass) Graphic LCD Modules, each optimized for diverse application requirements.
The RX32032A is a 4.24-inch 320×32 module featuring the ST7586S IC. It supports 3-line/4-line SPI interfaces, enabling flexible integration into various systems. The RX240128C is a 3.75-inch 240×128 module with the UC1528c IC, offering support for 6800, 8080 and 4-line SPI/I²C interfaces. The RX320240H is a 3.78-inch 320×240 module with the IST3088 IC, supporting 6800, 8080, and 4-line SPI interfaces.
All modules operate within a temperature range of -20°C to +70°C. The compact COG construction provides lightweight, space-saving designs suitable for industrial control systems, instrumentation, and other embedded graphic display applications.
| Model No. |
RX32032A |
RX240128C |
RX320240H |
| Product Image |
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| Structure |
COG |
| Size (Diagonal) |
4.24-inch |
3.75-inch |
3.78-inch |
| Number of Dots |
320 × 32 dots |
240 × 128 dots |
320 × 240 dots |
| Module Dimension |
114.32 (W) × 27.56 (H) × 5.60 (D) mm |
98.70 (W) × 67.70 (H) × 5.70 (D) mm |
94.20 (W) × 80.60 (H) × 6.05 (D) mm |
| View Area |
109.12 × 15.26 mm |
92.0 × 53.0 mm |
80.2 × 61.0 mm |
| Active Area |
106.865 × 12.850 mm |
83.975 × 44.775 mm |
76.79 × 57.59 mm |
| Dot Size |
0.319 × 0.388 mm |
0.325 × 0.325 mm |
0.23 × 0.23 mm |
| Dot Pitch |
0.334 × 0.402 mm |
0.35 × 0.35 mm |
0.24 × 0.24 mm |
| Duty |
1/32 |
1/128 |
1/240 |
| Backlight Type |
LED |
| IC |
ST7586S |
UC1528c |
IST3088 |
| Interface |
3-Line/4-Line SPI |
6800,8080,4-Line SPI/I2C |
6800,8080,4-Line SPI |
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View More Product Details |
View More Product Details |
View More Product Details |

4. Explore the Multi-application Uses of OLED Knob Modules

As the OLED market continues to grow, the need for innovative solutions in diverse applications is on the rise—and OLED knob displays are leading the way. At Raystar, we’re dedicated to developing and designing OLED knob modules that seamlessly integrate a high-quality OLED display with a functional control knob.
These modules are ideal for coffee machines, audio systems, and industrial controls, offering a modern, intuitive user experience.
Key Features
- Available in both circular (128x128) and rectangular (128x64) formats.
- Supports SPI and I2C interfaces for flexible system integration
- Wide operating voltage range: 1.65V to 3.3V
- Reliable performance in harsh environments (-30℃ to +80℃)
- Touch or rotary control options for enhanced usability
Ready to Elevate Your Projects?
Upgrade your smart home, audio, and industrial solutions with Raystar’s multi-application OLED Knob Modules. Learn more and see how these modules can enhance your next project.
Learn more about OLED knob modules: OLED Knob Modules
Contact our sales team today: Contact us

5. Upgrade User Interaction Experience with Our PCAP TFT Modules Series

This section introduces the series of TFT display modules featuring Projected Capacitive Touch (PCAP) technology. Compared to resistive touch screens, PCAP offers improved user interaction, higher performance, and enhanced usability.
Key Features
- Integrated control board for reduced development time
- Wide viewing angle technology for enhanced readability
- Sunlight-readable modules for outdoor visibility
- Wide operating temperature range for demanding applications
- Monochrome modules for specific use cases
Currently available module sizes: 0.96", 3.5", 3.9", 4.3", 5", 5.2", 5.7", 7", 10.1", and up to 15.6".
Ready to Improve Your Projects?
For more information, including detailed specifications and application support, please visit our product page.
TFT + PCAP Modules
If you require further assistance, feel free to contact us—we’re here to help you find the ideal display solution for your project.
Contact us

6. Earth Day Event: Second-hand Market for a Sustainable Tomorrow

Every Small Step Counts—Together for a Sustainable Tomorrow!
At Raystar, we believe that sustainability is a journey we share with our community. That’s why, in celebration of Earth Day, we proudly hosted our Second-hand Market—an initiative dedicated to giving pre-loved items a second life while fostering a more circular economy.
From April 21 to May 4, employees came together to sort, review, and donate their gently used items, ensuring each one met our quality guidelines. Through this collaborative effort, we collected 582 items and found new homes for 494 of them.
This not only reduced potential waste but also demonstrated our team’s strong commitment to responsible consumption and community care.
The success of this event highlights that small, collective actions can drive meaningful change. By embracing reuse and recycling, we take steps toward a more sustainable future for everyone.
Let’s Take Care of the Planet Together!
We’re excited to share more about this meaningful initiative with you!
Click here to explore the event and discover how we’re making a difference
If you have any questions about Raystar’s solutions, please feel free to contact our sales team anytime.
Contact us today to learn more about our solutions

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