4D Systems, Australia


microOLED 2.0" Transparent OLED Display Module
This product us RoHS compliant This product is PbFree


The μTOLED-20-G2 display module flaunts a very impressive 2.0’’ state of the art Passive Matrix Transparent OLED (PMTOLED) technology that is fully transparent and viewable from both the front and rear. This display module is powered with an embedded GOLDELOX graphics processor that delivers ‘stand-alone’ functionality to any project.

Powerful graphics, text, image, animation and countless more features are built inside the GOLDELOX chip. The module is designed to work out of the box and you are now ready to write your code in 4DGL (a high level 4D Graphics Language) using the 4DGL-Workshop4 IDE (editor, compiler and downloader). This will save weeks even months of development time on your next embedded graphics project.

4DGL is a graphics oriented language allowing the developer to write applications in a high level language, syntax similar to popular languages such as BASIC, C and Pascal. The module offers modest but comprehensive I/O features that can interface to serial, analogue, digital, buttons, joystick, sound generation and Dallas 1-wire devices.

Care should be taken when handling the uTOLED-20-G2 display module as the display flex is delicate and could be damaged with rough handling. Undue stress on the display flex can lead to horizontal/vertical black lines. 

The PmmC for this product for use with Workshop 4 is available from the Workshop 4 Product Page, on the PmmC/Firmware tab.

Please download this Product Brief and Datasheet for the µTOLED-20-G2 display module:

Please download this Product Brief and Datasheet for the GOLDELOX Processor:

Note: The GOLDELOX processor on the Display module can be re-programmed with the latest PmmC/Firmware for updates and future proofing via the Workshop 4 IDE Software. This process requires the use of the 4D Programming cable:


  • Low-cost OLED display graphics user interface solution.
  • 128 x 160 resolution, 65K true to life colours, PMTOLED screen.
  • 2.0” diagonal size, 39.79mm x 68.74mm. Active Area: 31.86mm x 39.74mm.
  • No back lighting with near 360° viewing angle (Transparent Display).
  • Easy 10 pin interface to any external device: VCC, TX, RX, GND, RESET, IO1, IO2, 3.3V.
  • Powered by the 4D-Labs GOLDELOX graphics processor highly optimised for 4DGL, the high level 4D Graphics Language.
  • 2 x GPIO ports supports:
    • Digital I/O
    • A/D converter with 8/10 bit resolution
    • Complex sound generation
    • Dedicated RTTTL tune engine
    • Multi-Switch Joystick
    • Dallas 1-Wire
  • 10K bytes of flash memory for user code storage and 510 bytes of RAM for user variables (255 x 16bit vars).
  • 1 x Asynchronous hardware serial port, TTL interface, with 300 baud to 600K baud.
  • On-board micro-SD memory card adaptor for storing of icons, images, animations, etc. Supports 64Mb to 2Gig micro-SD memory cards.
  • Comprehensive set of built in high level 4DGL graphics functions and algorithms that can draw lines, circles, text, and much more.
  • Display full colour images, animations, icons and video clips.
  • Supports all available Windows fonts and characters (imported as external fonts).
  • 4.0V to 5.5V range operation (single supply).
  • PCB dimensions: 37.5 x 24.0 x 11.0mm.
  • Weighing ~ 12g.
  • RoHS Compliant.

Development Software

4D Systems all new Workshop 4 IDE supports multiple development environments, to cater for different user requirements and skill level.

  • The Designer environment enables the user to write 4DGL code in its natural form to program the display module.
  • A visual programming experience, suitably called ViSi, enables drag-and-drop type placement of objects to assist with 4DGL code generation and allows the user to visualise how the display will look while being developed. 
  • Serial environment is also provided to transform the display module into a slave serial display module, allowing the user to control the display from any host microcontroller or device with a serial port.

The Workshop 4 IDE is available for download from its product page: 4D Workshop 4 IDE

What's Included

With each uTOLED-20-G2 Display Module, you also receive the following:

  • 150mm 5 way Female-Female jumper cable, for quick connection to another device or breadboard
  • 5 way Male-Male adaptor (for converting the Female-Female cable to be Male-Female)
  • Quick Start User Guide

Other things you may like to purchase seperately are:


Warranty Note: PmmC/Firmware or user application code programming should only be carried out using the 4D Programming cable (4D Programming Cable). Any malfunction because of custom or third party USB to Serial converters or Serial(RS232) to Serial(TTL) level converters will void the warranty.

It also applies to all 4D products which require an interface from the PC to the module for testing using 4D Software Test Tools.

It applies to all the purchases on or after 1st of July 2011.

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Embedded 4DGL Graphics Controller

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