OLED Display Module

OLED Display Module

OLED (Organic Light-Emitting Diodes) is a flat light emitting technology-based screen.

OLED is an advanced display technology made from a thin film of light-emitting organic materials.

When electrical current is applied, a bright light is emitted from OLED.

OLEDs are emissive displays that do not require a backlight and so are thinner and more efficient than LCD displays (which do require a white backlight).

OLED displays are not just thin and efficient, they provide the best image quality ever (as compared to LED and LCDs) and they can also be made transparent, foldable, flexible and even rollable and stretchable in the future.

OLEDs represent the future of display technology!
OLED display module (SSD1306):

oled display
  • OLED is an organic light-emitting diode that emits light in response to an electric current.
  • The OLED display module (SSD1306) is one of the most attractive displays available for a microcontroller. It has a good view angle and pixel density which makes it reliable for displaying the small level of graphics. Interfacing this IC with MCU can either be done using IIC or using SPI hence helps to save some pins as well.
  • OLED is an organic light-emitting diode that emits light in response to an electric current. The OLED display can works with no backlight so it can display deep black levels. It is small in size and light in weight than Liquid Crystal Displays (LCD).
  • 128×64 OLED display is a simple dot-matrix graphics display system. The OLED display has 128 columns and 64 rows which make it a display of total 128×64 = 8192 pixels. By just turning on or off these pixel’s led we can display a graphical image of any shape on it.
  • The OLED display is used for displaying text, images and various types of patterns. It is also suitable for mobile phones sub-display, MP3 players, calculators, etc.
  • The OLED display has 256 steps for brightness control and, it is also available with a different resolution like 128×32, 128×64.

Must See:

Pin Configuration

Pin NameDescription
Ground (GND)Connected to the ground of the circuit
Vcc (Vdd,5V)Can be powered by either 3.3V or 5V
SCL (D0,CLK)It is a clock signal. This pin transmits clocks to a slave, SCL. Data will be sent to other devices on clock tick event. The only master device has control over this SCL line
SDA (D1,MOSI)SDA is used to transmit data between master and slave. The data and acknowledgement are sent through SDA.

Features of OLED Display

  • Monochrome 7-pin SSD1306 0.96” OLED display.
  • 128×64 pixel resolution with 160° viewing angle.
  • Supply voltage 3V – 5V (supports both 5V and 3.31v logic devices).
  • It uses SSD1306 for interfacing hence can communicate through SPI or IIC.
  • Multiple SPI or IIC devices are supported
  • It can be easily interfaced with Arduino (Library available).
  • Supports decent graphics of bitmap images.

Other Types of OLED Display Modules

1Based on ColourMonochrome(Blue)
Yellow/Blue Colour
2Based on number of Pin3-Pin (supports only IIC)
7-Pin (supports IIC and SPI)
3Based on interface ICSSD1306
4Based on size0.91” (128×32)
0.96” (128×64)


  • Used in consumer electronics.
  • Used for Smartwatch, mobile phone, and MP3 displays.
  • Small level gaming displays.
  • Wide range of viewing angle enables to be used in low light.

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