C4

High Performance Display Controller for FHD LCoS Micro-display

• Description

  The C4 is an advanced, ultra-low-power LCoS display controller designed to drive up to two RAON HD or FHD panels simultaneously for cutting-edge AR and MR applications. It features a versatile video interface supporting MIPI DSI-2(2-port x 4-lane) with speeds up to 2.5Gbps per lane, as well as OpenLDI and DisplayPort 1.4, enabling high-resolution throughput for panels like the P13X and P24X. The controller integrates an embedded frame buffer and a high-performance 32-bit RISC-V processor, which manages complex tasks like real-time image enhancement, chromatic aberration correction, and programmable LED/VCOM control while maintaining a compact 6.0mm x 6.0mm footprint.

• Features

  • Support FSC-type display and Subpixel-type display
  • Optimized for driving between 1-Mpixel and 4.4-Mpixel
  • Support various low (0.15-Mpixel) to high-resolution (17.6-Mpixel) display
  • Ultra-low dynamic power consumption with embedded low-power low-leakage frame buffer, aggressive clock gating, and exploitation of temporal and spatial locality of pixel data
  • Primary C4 and Secondary C4 can share external re- sources for binocular systems
  • Re-designed CoKOATM: Real-time optic/perspective correction with larger correction range than the previous controller
  • Dynamic CoKOA LUT calculation for XR mode and Projector mode
  • Brightness non-uniformity correction
  • Embedded 32-bit RISC-V processor
  • RTOS support for timing critical operation

• Applications

  • Head-Mounted Display
  • Head-Up Display
  • Pico Projector
  • AV Projector
  • AR Smart Glasses
  • Near Eye Display Devices