The Pixel 16K™ chip is a display driver IC designed for passive microLED arrays with up to 128 rows and 128 columns for a total pixel count up to 16,384. It supports microLED arrays with common cathode configuration using rolling-line operation. The chip has an array of unit pixel drivers, with in-pixel digital memory, 7-bit current-mode digital-to-analog Converters (i-DACs), and high-voltage drive stage. The chip is operated using a 4-wire serial programming interface (SPI), using soft commands for all the critical timing operations in the chip, allowing flexible operation of the chip. The Pixel 16K chip has been fabricated using a high voltage CMOS process, with high (11 V), mid (5 V), and low (1.8 V) voltage devices. It measures 2.4 mm x 2.7 mm, and uses chip-scale packaging with Cu bumps.

Key Features

• Display driver IC for passive microLED and OLED arrays
• 128 x 128 array with common cathodes
• High-voltage current-mode pixel drivers
• In-pixel 7-bit current-mode DACs
• Pixel-level power-down control
• High voltage output drive capability up to 11 V
• Chip operated using soft commands over 4-wire SPI
• Triple supply operation
  • 11 V for high voltage output Drivers
  • 5 V analog for analog core
  • 1.8 V digital core
• Small die size of 2.7 mm x 2.4 mm
• Small chip-scale package using Cu bumps
• Suitable for flip-chip assembly

Applications

• Micro-displays using OLEDs and microLEDs
• Multi-channel current-mode DACs