LCD 20×4 Green Backlight Display

The LCD 20×4 Green Backlight Display offers four lines of 20 characters each with a bright green backlight. It provides more display area than 16×2 models while maintaining HD44780 compatibility for easy Arduino integration.

Key Features

• 20 characters x 4 lines display area
• Green LED backlight for excellent visibility
• HD44780 compatible controller
• 5×8 dot matrix character font
• 4-bit or 8-bit parallel interface
• Adjustable contrast via potentiometer
• Large display area for complex data

Technical Specifications

Applications

• Multi-parameter monitoring displays
• Complex menu systems
• Data logging readouts
• Industrial control panels
• Weather station displays
• Information kiosks

Important Notes

• Uses same library as 16×2 – initialize with (20, 4) instead of (16, 2)
• Requires 6-7 GPIO pins without I2C backpack
• I2C backpack strongly recommended for pin-constrained projects
• Green backlight typically draws less current than blue
• Large size may not fit all enclosures – verify dimensions