SOURCE: Intersil

June 26, 2006 06:00 ET

Intersil Introduces New Non-Volatile Programmable Vcom Calibrator for TFT-LCDs

ISL45041 Replaces One of the Last Remaining Mechanical Stages in TFT-LCD Assembly

MILPITAS, CA -- (MARKET WIRE) -- June 26, 2006 -- Intersil Corporation (NASDAQ: ISIL), a world leader in the design and manufacture of high-performance analog solutions, today introduced a 7-bit non-volatile programmable Vcom calibrator with I2C interface for setting backplane common voltage in thin film transistor liquid crystal displays (TFT-LCDs).

Intersil's ISL450 41 is designed to reduce the flicker of an LCD panel by adjusting the Vcom voltage during production, effectively replacing the mechanical potentiometers normally needed to adjust Vcom. This device incorporates an I2C interface and a 128-step adjustable sink current output current control. Its digital interface controls the sink-current output that attaches to an external voltage driver to establish the required Vcom voltage setting.

"Adjusting the Vcom of TFT-LCD panels is a labor-intensive process that can be simplified by using our new non-volatile Vcom calibrator," said Oleg Steciw, marketing manager for Intersil's Display products group. "This solution allows the user to replace one of the last mechanical stages in TFT-LCD panel assembly, reducing labor time and costs while significantly increasing reliability."

The ISL45041 also includes an EEPROM (erasable programmable read only memory) bank, features industry-leading electrostatic discharge ratings, and operates using a lower supply current than competitive devices. This device lets customers easily set and drive the desired Vcom voltage on the TFT-LCD panel via the I2C interface and with a resolution of 7 bits. Once the ideal value is found, it can be programmed and stored in the on-board non-volatile EEPROM memory bank. Then, after it is set, the Vcom voltage can be driven throughout the common backplane via a high-performance rail-to-rail input and output, high-output-current Vcom driver.

Key Features

--  128-step adjustable sink current output
--  Analog voltage range of 4.5V to 18V; digital voltage range from 2.25V
    to 3.6V
--  I2C interface
--  On-board 7-bit EEPROM
--  Output adjustment SET pin
--  Output guaranteed monotonic over temperature
Target Applications
--  TFT-LCD screens for televisions, notebook computers, monitors
About Intersil's Display Products

Intersil offers a broad portfolio of products for the fast-growing LCD display market. Intersil's family of display ICs includes gamma buffers, DC-DC regulators, and digitally controlled potentiometers (DCPs) that provide a complete analog solution for high-performance LCD displays. Combined, these products provide the analog supply voltage, Vcom reference, voltage-on and voltage-off bias voltages, and gamma reference voltages that feed the column drivers in LCD displays. Intersil's DC-DC regulators power the low-voltage digital ICs used in LCD displays and DCPs control the LCD contrast and brightness. Intersil continues to innovate in the display area with the smallest, most power-efficient products for LCD monitors, TVs, notebook displays, and industrial and medical LCD applications. To learn more about Intersil's broad Display portfolio, visit

Pricing and Availability

The ISL45041 is available now in a space-saving DFN-8 lead-free package that measures just 3mm x 3mm, with a maximum thickness of only 0.8mm. It is priced at $1.40 each in 1,000-unit quantities. More information is available at,1477,ISL45041,0.html.

Note to editors: To view a high-resolution downloadable photo of the ISL45041, visit Intersil's photo room at:

About Intersil

Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, other handheld systems, and notebooks. Intersil's product families address power management functions and analog signal processing functions. Intersil products include ICs for battery management, hot-swap and hot-plug controllers, linear regulators, supervisory ICs, switching DC/DC regulators and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; video and high performance operational amplifiers; data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and ICs for military, space and radiation-hardened applications. For more information about Intersil or to find out how to become a member of our winning team, visit the Company's web site and career page at

Contact Information

  • Media Contact
    Kim Fehrt
    Public Relations Manager
    Intersil Corporation
    (408) 546-3566
    Email Contact