Atmel Introduces LED Driver that Enhances LCD TV Picture Quality, Eliminates 3D Ghosting, Enriches Video Gaming

Atmel® Corporation (Nasdaq: ATML) a leader in microcontroller and touch technology solutions, today announced a new high-performance family of 16-string LED drivers with integrated timing algorithms that improve picture quality of LCD TVs by eliminating 3D ghosting and flickering effects. With these capabilities, the Atmel MSL2164 and Atmel MSL2166 devices are ideal for delivering the most compelling viewing and video gaming experience via new 3D and 2D scrolling backlight TVs.

The LED drivers work seamlessly with Atmel AVR® microcontrollers (MCUs), including the Atmel tinyAVR®, Atmel megaAVR® and Atmel AVR XMEGA® devices. The microcontrollers process timing and dimming instructions, sending this data to the MSL2164 and MSL2166 devices. The AVR devices, along with firmware, provide a total solution that optimizes the entire backlight design, delivering superior performance compared to competitive solutions.

Featuring highest efficiency power management and backlight control along with multiple dimming modes for 3D, scanning and zone dimming edge-lit LCD TVs, the MSL2164 and MSL2166 devices drive up to 16 parallel strings of LEDs and offer comprehensive system and fault management to support high-performance backlight design. With this new driver family, high-end TV OEMs can deliver high screen resolution and greatly enhance picture quality using internal lighting timing algorithms that improve the backlight timing accuracy, with higher resolution vs. other solutions on the market today. At the same time, since OEMs will be able to choose from smaller form factor MCUs, such as tinyAVR devices, they can lower their system overhead.

Historically, TV OEMs have had to calculate the appropriate parameters to effectively illuminate a desired area in the backlight of a display. LED drivers would generate algorithms to set the appropriate string phase to optimize synchronization of the backlight to the LCD panel. Often, OEMs had to perform additional calculations to adjust the string phrase to ensure that the backlight was properly synchronized within the frame refresh. The MSL2164 and the MSL2166, with multiple pulse width modulation (PWM) modes—including forward, inverse, trailing and center—reduce design complexity because the timing algorithms are integrated into the devices. This ensures that the backlight is illuminated at the most optimal moment, when all of the LCD pixels have settled.

"Next-generation TVs, particularly those with 3D displays, demand a different approach towards local dimming," said Girish Ramesh, marketing manager of smart power products at Atmel Corporation. "Our newest LED drivers, the MSL2164 and the MSL2166, with their smart timing algorithms and programmable PWM modes, give OEMs who are developing LED edge-lit TVs a clear advantage in performance, design time and cost."

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