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Insight Of Next Display【Issue No.127】 February, 2021
+886-4-25650761 sales@raystar-optronics.com www.raystar-optronics.com
February, 2021
Dear subscribers,
Welcome to this issue of newsletter! In this monthly dose of Raystar’s update, we’re excited to introduce some new displays we developed over the past few weeks. We appreciate your constant support and attention to our news.

Contents in Issue No. 127
1. [RL0F00039000QGAAASA00] 3.9 inch CAN bus TFT Smart Display
2. Introduction of Smart Display GUI Builder
3. Smart Display GUI Builder introduction of operation and toolbar
4. [REA012864A] 1.54" COG+PCB Graphic OLED Module 128x64
5. [REA025664A] 2.08" 256x64 COG+PCB OLED support character fonts

1.[RL0F00039000QGAAASA00] 3.9 inch CAN bus TFT Smart Display

RL0F00039000QGAAASA00, this 3.9-inch CAN bus Smart Display adopts one of our off-the-shelf TFT modules RFS390Q-EIW-DBG coupled with coding firmware interface. In the light of the coding firmware, users only need to execute commands of control which cut down on time of programming notably. Such smart display is an excellent solution for faster time-to-market.

The Smart Display of Raystar is comprised of our TFT module and CAN interface. There are plenty of advantages of this interface including data transmission of long distance (up to 40 meters), being highly immune to electrical interference, good stability. CAN BUS is the most common physical layer; the maximum transmission rate can reach 1Mb/s (High-Speed CAN). It’s effortless to communicate with other devices supporting CANopen protocol, moreover, there’re various types of objects of control to choose from. On top of that, its flexible parameter control settings allow users for faster development.

Smart Display has built-in flash memory (Flash) to store fonts and graphic objects (Object Dictionary). The host can simultaneously control up to 30 Smart Displays and demonstrate different graphic objects. This Smart Display also provides standard UI objects enabling users to swiftly develop projects. If customers need customized UI objects, Raystar’s engineering team is able to provide you with comprehensive help and convert image files in PNG / JPG format into image control objects which can be completed in 3 to 5 working days.

Features of 3.9-inch Smart Display:

1. DC 5V working voltage, low power consumption for USB to drive.
2. Self testing after booting function.
3. CAN bus communication interface.
4. Support CANopen negotiation. Default baud rate is 250KB.
5. Embedded FLASH memory, storing Font and Object Dictionary.
6. Support capacitive touch panel (CTP).
7. Smart Display scenario is slave device display and action from Master Device instruction.
8. Embedded buzzer controlled by Master Device.
9. Demo set HOST can be used on multiple platforms, such as Computer (with USB to CAN Dongle), MCU, Raspberry Pi (with PiCAN2).

Raystar CAN Smart Display includes:

Hardware Platform

Physical Layer including

Firmware code
(Data contents)

Presentation Layer including
Splash /application/UI

Software code
(Support tools)

Application Layer including
PC+AP / Interface Dongle to configure or update Smart Display contents.


Mechanical Data:

■ LCD panel:105.5(W) × 37.0(H) × 5.13 mm
■ PCB:157(W) × 42(H) × 1.6 mm

General information:

■ Operating voltage: 5 Vdc
■ Communication Interface: CAN bus differential ± 3.3 Vpp
■ LCD display size: 3.9 inch
■ Dot Matrix: 480 × 128 × RGB (TFT) dot
■ Module dimension: 105.5(W) × 37.0(H) × 5.13 mm
■ Active area: 95.04 × 25.34 mm
■ Dot pitch: 0.066(W) × 0.198(H) mm
■ LCD type: TFT, Normally White, Transmissive
■ View Direction: 6 o'clock
■ Aspect Ratio: Bar Type
■ Touch Panel: With PCAP
■ Surface: Glare



There are 3 scenarios for different applications. Feel free to contact Raystar by sending us inquiries via the website.


(Industrial Application)

>> Link to web page


(Vehicle Application)

>> Link to web page


(Medical Application)

>> Link to web page


2.Introduction of Smart Display GUI Builder

Raystar has developed a software application of Windows Integrated Development Environment (IDE)—GUI (Graphical user interface) builder for Smart Displays. The GUI builder is intended mainly for users who haven’t purchased the hardware (Smart Display); they are still able to simulate display effects and functions through the simulator. At present, the applicable Smart Display sizes are 3.9-inch, 5-inch and 7-inch. GUI Builder functions are introduced as follows:

Dragging Widgets & preview function:
Users are able to design their screen appearance by dragging widgets on Raystar GUI Builder, and you also get a live preview of the changes. With the concept of "what you see is what you get", this function is time-saving for screen appearance design.

Simulator function:
There’s no need to purchase the hardware (Smart Display) to demonstrate the display effects and interactive behaviors. Users only need to use Raystar GUI Builder application software simulator to simulate the display effects and functions on the computer which greatly reduce costs and speed up project development.

Change or build GUI design on the client-side:
Instead of creating graphical objects through the Raystar engineering team, customers can replace or create GUI designs by themselves. But if customers have any other demands, we can also provide custom-design graphics objects.

How to get Raystar’s GUI Builder?
All you need is to contact us through our website or send inquiries to our sales email address. We’ll provide it free of charge.

Raystar Smart Display GUI Builder


3.Smart Display GUI Builder introduction of operation and toolbar

The Start screen of Smart Display GUI Builder

The Start screen of Smart Display GUI Builder

The design page of Smart Display GUI Builder

The design page of Smart Display GUI Builder

The design page of Smart Display GUI Builder

Customization by Smart Display GUI Builder

Customization by Smart Display GUI Builder

Simulation by Smart Display GUI Builder

Simulation by Smart Display GUI Builder

HW device update

HW device update


4. [REA012864A] 1.54" COG+PCB Graphic OLED Module 128x64

REA012864A is a graphic COG OLED display module with resolution 128x64 pixels. The additional PCB on this OLED display helps users to save time on developing PCB on their own. Also, there's an added frame with four screw holes allowing users for quick mounting.

Our OLED boasts high contrast ratio 10,000:1 making the visual performance stand out from traditional displays. Logic supply voltage ranges from 2.8V-5.5V, the typical value is 3.3V. The module works within temperature from -40℃ to +80℃; Storage temperature range is -40℃ to +85℃.

Raystar provides three OLED emitting colors for you to choose from: white, yellow and green. REA012864A is a good fit for applications such as smart home appliances, medical equipment, dashboards, etc.



■Module dimension: 42.4 × 38.0 × 2.56 mm
■Active area: 35.05 × 17.51 mm
■Dot Matrix: 128 × 64
■Dot size: 0.249 × 0.249 mm
■Dot pitch: 0.274 × 0.274 mm
■Display Mode:Passive Matrix
■Duty: 1/64 Duty
■Display Color: White / Yellow / Green
■IC: SSD1309
■Interface:4-Wire SPI
■Size: 1.54 inch



>>Link to REA012864A

5. [REA025664A] 2.08” 256x64 COG+PCB OLED support character fonts

REA025664A is a new series of 2.08-inch, 256x64, COG OLED display with additional PCB. Here we’d like to introduce the built-in IC GT21L16T1W. GT21L16T1W font IC is a 15x16 point font chip supporting GB12345 standard Chinese fonts, BIG5 traditional Chinese fonts, JIS0208 standard Japanese fonts (compatible with Unicode), and fonts of 150 nations in total.

REA025664A series with PCB reduces time of development, and is suitable for users to utilize wire connection. In addition, the 4 screw holes on the PCB allow users for easy mounting. REA025664A OLED module features high brightness 10,000:1, and provides logic voltage 3V/5V. The module works within temperature from -40℃ to +80℃; Storage temperature range is -40℃ to +85℃. There are 2 emitting colors to choose from: white and yellow; this OLED series also supports 4-bit grayscale.



■Module dimension: 70.0 × 22.0 × 1.76 mm
■Active area: 51.18 × 12.78mm
■Dot Matrix: 256 × 64 Dots
■Pixel Size: 0.18 × 0.18 mm
■Pixel Pitch: 0.20 × 0.20 mm
■Display Mode: Passive Matrix
■Duty: 1/64 Duty
■Gray Scale: 4 Bits
■Display Color: White / Yellow
■IC: SSD1362
■Font IC: GT21L16T1W
■Interface: 3-Wire SPI
■Size: 2.08 inch



>>Link to REA025664A



Insight Of Next Display【Issue No.127】 February, 2021Friendly Printing



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