OLED display (Organic Light-Emitting Diode) have higher contrast than LCD display. Because the display makes its own light, no backlight is required (This reduces the power required to run the OLED and is why the display has such high contrast).  

This OLED module is easy to use since it is connected to microcontroller (Arduino) through I2C. It is covered by 128x64 pixels. 

Featrures

• Operating voltage: 3.3V-5V
• Resolution: 128x64
• Visual Angle: >160°
• Interface: I2C.
• Pixel Color: Blue
• Working temperature: -30°C ~ 70°C
• Module size: 27.0 x 27.0 x 4.1mm
• OLED driver IC: SSD1306

OLED I2C module detailed tutorial including arduino connection and code.