SainSmart 0.91" I2C IIC Serial 128x32 OLED Module for Arduino (Blue Backlit)

What is OLED?

OLED (Organic Light-Emitting Diode) is a self light-emitting technology composed of a thin- multi-layered organic film placed between an anode and cathode. In contrast to LCD technology- OLED does not require a backlight. OLED possesses high application potential for virtually all types of displays and is regarded as the ultimate technology for the next generation of flat-panel displays.

How Does OLED Emit Light?

OLEDs basic structure consists of organic materials positioned between the cathode and the anode- which is composed of electric conductive transparent Indium Tin Oxide (ITO). The organic materials compose a multi-layered thin film- which includes the Hole Transporting Layer (HTL)- Emission Layer (EML) and the Electron Transporting Layer (ETL). By applying the appropriate electric voltage- holes and electrons are injected into the EML from the anode and the cathode- respectively. The holes and electrons combine inside the EML to form excitons- after which electroluminescence occurs. The transfer material- emission layer material and choice of electrode are the key factors that determine the quality of OLED components.

Specifications:

* High resolution: 128 x 32
* Viewing angle: >160°
* Wide voltage support: without any modification- directly supports 3V ~ 5V DC
* Working temperature: -30°C ~ 70°C
* Module volume ( generous ): 27.0 x 27.0 x 4.1mm
* I2C/IIC Interface, need 4 IO only.