Timing Controller and LED Backlight Combination Solution (Microsemi)

Microsemi Corporation announced a partnership with Sony's Semiconductor Business Unit ("Sony") to introduce the market's first 3D-enabled timing controller and local dimming LED backlight combination solution for lower manufacturing costs A large number of next-generation LCD TVs. The combined solution includes the Sony CXD4730GB timing and lighting controller and an LED driver solution consisting of the Microsemi DAZL!TM2000 Series 32-port logic chip (LX24232) and 8-port LED driver power chip (LX23108L).

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This complete turnkey reference design combines Sony's powerful video and lighting processing technology with Microsemi DAZL! LED drive technology to produce outstanding high-quality 3D and 2D images using LCD panels from multiple manufacturers. This technology integration enables a low-cost 60 Hz refresh rate LCD panel to achieve image quality comparable to the more expensive 120 Hz LCD panel and allows the image quality of a 120 Hz LCD panel to catch up with the costly advanced 240 Hz LCD panel. TV designers can now use this solution to create 3D LCD TVs with higher image quality and contrast while reducing cost, simplifying design and speeding time to market. This advantage is especially important for rapidly expanding markets such as China. Microsemi is planning to expand its partnership with Sony to support Sony's next-generation video and lighting processing technology.

Main features of Microsemi DAZL! LED IC:

• Backlight power supply with adaptive digital control for improved system efficiency • SPI communication bus with video controller or external FPGA • Flexible scan interface with programmable phase delay for each channel • Configurable PWM Frequency • Advanced LED current settings optimized for 3D support • LED string voltage monitoring for fault detection and protection • FET array with internal thermal protection • Up to four 8-port LEDs per LED controller Driver for optimal heat distribution • +/-2% high precision channel current regulation • Optional FPGA/MCU control module for closed-loop control of LED luminosity • RoHS compliant

The main features of Sony timing and lighting controllers:

• LVDS Rx IF
• Timing pulse generator for LCD drive signals • mini-LVDS Tx IF / LVDS Tx IF (TCON bypass mode) (optional)
• MEMC with frame rate conversion (2x, 2D/3D support)
• Horizontal/vertical scanning (supports 3D format)
• LED backlight local dimming • RGB image (grayscale) correction • Drive overdrive function • Panel driver IC control function • Internal frame memory • RoHS compliant

Paul Pickle, vice president and general manager of analog mixed-signal divisions at Microsemi, said: "This easy-to-use and technologically advanced next-generation LED TV solution is the result of a joint effort between the two companies. Our cooperation brings complete Turnkey solutions that support advanced features such as scanning LED backlighting and 3D dramatically reduce TV manufacturer development time and cost."

Microsemi will present this solution at the 2C11 booth at IIC China 2011 in Shenzhen from February 24th to 26th.

Microsemi has now supplied samples of DAZL! 2000 logic chip LX24232 and DAZL! 2001 power chip LX23108L, and will begin full production in March 2011. Sony timing and lighting controller products (product code CXD4730GB) are available now.

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