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NEC Electronics Releases Industry's First Liquid Crystal Display Driver ICs Supporting High-Speed Serial Interface Ideal for 3G Mobile Handsets
Further Promoting the Standardization of Mobile CMADSTM, Interface for Mobile Devices That Reduces Data Lines, EMI Noise, and Power Consumption
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| "µPD161833M, µPD161605M" |
KAWASAKI, Japan, February 23, 2004 -
NEC Electronics Corporation today announced that the company started sampling the two liquid crystal display (LCD) driver products, named µPD161833M and µPD161605M, that dramatically facilitate the design of a mobile device such as 3G cellular phone featuring rotating high-quality thin film transistor (TFT) displays. The two products are the first in the industry as LCD driver ICs to have a high-speed serial interface. The µPD161833M, for low temperature poly-silicon (LTPS) LCD panels with 240 x 320 resolution (QVGA), and the µPD161605M, for amorphous TFT-LCD panels with 176 x 240 resolution (QCIF+), both have Mobile CMADSTM (Current Mode Advanced Differential Signaling) as the interface with the baseband or application chip and enable mobile device makers to design simpler and flexible printed circuit boards with a reduced number of lines for data transfer.
Mobile CMADS is an interface technology for mobile devices developed by NEC Electronics, adopting high-speed serial interface instead of commonly-used parallel interface. It applies a method to transfer data using current instead of voltage swing, to achieve low power consumption and low electromagnetic interference (EMI) noise.
Use of these new products adopting Mobile CMADS will facilitate wiring design of the narrow rotating part of rotating or sliding displays, such as those used in cellular phone, by reducing the number of data lines required for the transfer of image data from 18 to just 4 lines. EMI noise will also be reduced by approximately 90 percent. Even at high data transfer speeds, power consumption will be equivalent to or lower than that of parallel interfaces. Furthermore, this new interface can easily be incorporated in application chips, etc., because the signal output circuit on the data transmitting side consists of simple N-channel open-drain transistors that do not require an analog circuit. An additional advantage is that it easily supports low voltage power supply (as low as 1.5 V) on the data transmitting side.
"For some time, NEC Electronics has worked on developing serial data transfer technology that minimizes power consumption and does not increase EMI noise, and last year the company successfully developed this Mobile CMADS," said Kazumichi Aoki, general manager of 5th System LSI Division, NEC Electronics Corporation. "We will share the specifications of Mobile CMADS with LCD module manufacturers and cellular phone manufacturers, and will further strengthen our product lineup. Our aim is to promote it to make it an industry standard."
Recently in the field of cellular phones, the 2.5 generation allowing the transmission of still pictures in addition to text data has been giving way to the 3rd generation supporting video transmission, and 3G cellular phones are expected to achieve explosive growth. At the same time, with the start of terrestrial digital television broadcasting, cellular phones are beginning to provide a variety of advanced services, resulting in the rapid increase in amounts of data to be transferred. Moreover, to cater to diverse user tastes, manufacturers are increasing the number of designs, and calls are rapidly rising for models featuring revolving or sliding displays. Under these circumstances, it is required to add more performance to the display and transfer data from the main body to the display part at a transfer rate in excess of 45 Mbps. In seeking to send such large amounts of data through narrow hinged parts, engineers naturally
look in the direction of reducing the number of data transfer lines and switching from parallel wiring to serial wiring, but such a switch presents various challenges, including larger consumption power and higher EMI noise. It is to answer this pressing need for LCD driver LSIs enabling simpler circuit boards, lower EMI noise, and lower power consumption that NEC Electronics has introduced the new products, µPD161833M and µPD161605M.
The Mobile CMADS technology has been receiving support from other semiconductor manufacturers. The graphics controller LSIs for mobile handsets introduced from NVIDIA Corporation named GoForceTM Series, such as GoForceTM 2150 and GoForceTM3000, support Mobile CMADS. The combination of NEC Electronics' new driver ICs with these products will allow mobile device makers to easily design devices that meet user demands.
For the specifications of these new products, please refer to the attachment.
Pricing and Availability
Engineering samples of the µPD161833M and µPD161605M are both priced at US$6.0 per unit. Mass production is slated to begin in August 2004 and total monthly production for both products of 1,000,000 units is forecast. Price is subject to change.
<< Related Content >>
- Product Information : Display Controller/Driver
  µPD161833M
µPD161605M
About NEC Electronics Corporation
NEC Electronics Corporation (TSE: 6723) specializes in semiconductor products encompassing advanced technology solutions for the high-end computing and broadband networking markets, system solutions for the mobile handsets, PC peripherals, automotive and digital consumer markets, and platform solutions for a wide range of customer applications. NEC Electronics Corporation has 25 subsidiaries worldwide including NEC Electronics America, Inc. (www.am.necel.com) and NEC Electronics (Europe) GmbH (www.ee.nec.de).
In addition to marketing, selling and supporting NEC Electronics products to customers in their respective regions, NEC Electronics America and NEC Electronics Europe also operate local manufacturing facilities in Roseville, California, and Ballivor, Ireland, respectively. Additionally, NEC Electronics America for North America and NEC Electronics Europe for Europe are the sales and marketing channels of NEC AM-LCD and PDP modules. For additional information about NEC Electronics worldwide, visit www.necel.com.
Mobile CMADS, NEC Electronics are either registered trademark or trademark of NEC Electronics Corporation in Japan, the United States, and/or other countries. All other registered trademarks or trademarks are property of their respective owners.
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Information in the press releases, including product prices and
specifications is current on the date of the press announcement,
but is subject to change without prior notice.
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