Reference design enables lower-cost LCD panels

Reference design enables lower-cost LCD panels

A reference design including the Sony 3D-capable timing and lighting controller, part number CXD4730GB and the Microsemi LED driver solution consisting of two chips, the DAZL!2000 series 32-port logic chip (LX24232) and 8-port LED driver power chip (LX23108L) will enable next-generation 3D LCD TVs. The combined technologies allow lower cost 60 Hz refresh LCD panels to produce the image quality of more expensive 120-Hz panels, and enable 120-Hz panels to match the image quality of costly state-of-the-art 240-Hz panels.

Key features for the DAZL! LED ICs include increased system efficiency via adaptive digital control of the backlight unit’s power supplies, SPI communication bus to interface with the video controller or to external FPGA, flexible scanning interface with programmable phase delay for every channel, and configurable PWM frequency. It also provides an advanced LED current setting optimized for 3D support, per string voltage monitoring for failure event detection and protection, optimized thermal distribution using up to four 8-port LED drivers per LED controller, and high-accuracy regulation of channel current, ±2%,

The timing and lighting controller features LVDS Rx IF, a timing generator for LCD driving signals, mini-LVDS Tx IF / LVDS Tx IF(TCON bypass mode) (selectable), and MEMC with frame-rate conversion (2x, 2D/3D support). It also features horizontal/vertical scaling (3D format support), LED backlight local dimming, RGB gamma correction, overdrive function, panel driver IC control function, and internal frame memory. (Contact company for pricing and availability.)

Microsemi , Irvine , CA
SoC Products Group 650-318-4200
www.actel.com/