1.3 Inch OLED Display Module with GND

This is a 1.3 Inch I2C IIC OLED 4-pin LCD Module (with GND VCC) White. The display module can be interfaced with any microcontroller using SPI/IIC protocols. It features a resolution of 128×64 pixels. The package includes the display board, OLED panel, and a 6-pin male header pre-soldered to the board.

The OLED Display Module is based on self-emissive technology and is composed of a thin, multi-layered organic film placed between an anode and a cathode. Unlike traditional LCD displays, OLED does not require a backlight. This makes OLED modules thinner, more power-efficient, and capable of producing high-contrast visuals. White OLED displays are particularly suitable for applications requiring clean and bright monochrome output, such as wearable devices, instrumentation, and battery-powered embedded systems.

The basic structure of the OLED Display Module includes organic materials layered between a cathode and a transparent anode made from Indium Tin Oxide (ITO). The organic layers are divided into the Hole Transporting Layer (HTL), the Emission Layer (EML), and the Electron Transporting Layer (ETL). In a white OLED display, the Emission Layer (EML) is made of organic compounds that emit white light when excited.

When voltage is applied, holes are injected from the anode and electrons from the cathode into the EML. These carriers recombine to form excitons, which then decay and emit white electroluminescent light. The quality of the white OLED depends on the composition of the EML, the charge transport materials, and the electrodes used.

White OLED modules offer a clean, modern aesthetic and are ideal for text-based interfaces, icons, and graphical display elements. Their high brightness and contrast make them readable even in low-light environments.