Solomon Systech Limited

SOLOMON SYSTECH LIMITED ANNOUNCES A NEW SERIES OF
SINGLE CHIP SEGMENT & COMMON LCD DRIVER / CONTROLLER CHIPS
FOR PORTABLE TELECOMMUNICATIONS AND CONSUMER APPLICATIONS

A New Series That Support 128 x 64/80 Mono or Gray Scale LCD Display

Hong Kong, April 25, 2000 - Solomon Systech Limited today announced a new series of LCD controller / driver ICs, part number SSD1820/1 and SSD1850/1, highly integrated with all the advanced features, for new design of portable telecommunication products and consumer applications. The LCD driver / controller ICs were designed and developed by the Solomon Systech development team located in Hong Kong, which was formerly a professional team in Motorola Semiconductor Products Sector. The series of LCD drivers supports 128 x 64 or 128 x 80, monochrome or gray scale STN LCD display with fast speed interface and universal command set, tailor made for telecommunication products such as cellular phones, PDA, smart handheld devices and other portable consumer products.

Better Display

The SSD1820/1 and SSD1850/1 are capable of driving 128 x 64 or 128 x 80 dot matrix monochrome or gray scale STN LCD with an extra icon line. The bigger display is perfect to show pop-up menu, calendar, appointments and notes, and the gray scale function brings fun in greeting page, games, watermark or screen saver with company logo, signs or fancy cartoon characters. With an unique bandgap reference circuit developed in this series of LCD driver, the devices provide stable display contrast independent of V_DD input while maintain ±2% (typ.) high voltage output chip-to-chip variation.

Better Electrical Performance

Power consumption in display mode is as low as 0.36mW, with 1.8V V_DD operation voltage, 5x on chip DC-DC converter and typical current consumption of only 200µA. Connection pins can be as few as only 11 input pins, with 3-wired serial interface, internal divider and internal bias enabled. With programming multiplex ratio and display offset control, pseudo animation is possible at low power standby situations. In addition, advanced design in high speed communication interface (at maximum 17MHz serial interface or 6MHz parallel interface), the devices perfectly match the requirement of the latest, fast DSP or MPU protocol, a definite need in the next generation portable telecommunication products system design.

Technical Specifications

The SSD1820/1 drive 128 x 64/80 plus one icon line monochrome STN LCD while the SSD1850/1 drive 128 x 64/80 plus one icon line gray scale STN LCD. Operating in low voltage 1.8V to 3.5V, the ICs provide on-chip 2x, 3x, 4x, 5x or up to 6x voltage generator for at most +15V high voltage output while current consumption is less than 1µA in low current sleep mode. The devices provide selection on high speed serial interface at 17MHz or parallel interface at 6MHz maximum, with industrial standard command set.

Other features include LCD drive voltage temperature compensation at 8 selectable coefficients, 64 levels internal contrast control, programming multiplex ratio from 16 mux to 65/81 mux, programmable bias ratio from 1:4 to 1:9/1:11 bias, display offset control, vertical scrolling, re-mapping of row/column drivers, on-chip display data RAM and on-chip oscillator.

The SSD1820/1 and SSD850/1 are manufactured in CMOS process, available in gold bump die (slim die design) for COG applications and TAB (Tape Automatic Bonding). Samples of SSD1820/1 are available now and samples of SSD1850/1 are available in May at sample price US$4.0 for gold bump die, US$5.0 for TAB. For detailed information and product specifications, please contact Solomon Systech Limited or visit the web site at http://www.solomon-systech.com.

About Solomon Group

Established in 1973, today Solomon Group has grown into a significant conglomerate with diversified businesses and multiple subsidiaries, covering semiconductors, wireless communications, smart card, peripherals, LCM, battery packs, sensor, and power businesses, respectively.

Solomon Group is continuously striving for expanding its core businesses and global strategy. In April of 1999, Solomon merged Qing Cheng Group in Hong Kong and accomplished one of its important milestones in pursuing oversea markets.

http://www.solomon.com.tw

-- end --