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|Hitachi Releases HD66778 492/360-Output, 64-Grayscale TFT Driver with On-Chip Timing Control Circuit for HVGA and QVGA Definition TFT Liquid Crystal Panels for Use in PDAs|
| 1.35 mm chip width allowing compact mounting, plus an on-chip timing control circuit that reduces the number of parts required, enabling system costs to be reduced |
"HD66778" TFT driver for PDA of HVGA and QVGA size display,
492/360-output and 64-grayscale
Tokyo, September 26, 2002 Hitachi, Ltd. (TSE: 6501) today announced the HD66778 TFT liquid crystal driver, with switchable 492/360-output capability and supporting 64-grayscale, 260,000-color display, as a source driver for 3- to 4-inch HVGA*1 and QVGA*2 definition TFT liquid crystal panels used in PDAs (Personal Digital Assistants). Sample shipments will begin in October 2002 in Japan.
The HD66778 features a chip width of only 1.35 mm that enables compact mounting. In addition, the inclusion of an on-chip timing control circuit, previously provided as an external dedicated LSI, enables the number of parts to be reduced, for compact mounting and lower-priced end-products.
Portable information terminals known as PDAs have recently been offering featuring greater functional versatility and higher performance, while offering lower power consumption in order to extend battery life. Also, in order to achieve a compact end-product, a configuration comprising a main CPU with built-in LCD controller together with driver chips is generally employed for liquid crystal panel control, and there is a need to further reduce the mounting area of the liquid crystal display driver as well as lowering product power consumption.
To meet this need, Hitachi has developed the HD66778, supporting switchable 492/360 outputs and 260,000 colors at 64-grayscale, designed to offer lower liquid crystal panel power consumption and a more compact mounting area. Major features of the HD66778 are summarized below.
< Features >
The supported mounting method is COG*3 mounting, in which the device is directly connected face-down on the LCD glass substrate. In addition, for the pin arrangement inside the LSI, common drivers are arrayed at both sides of the segment driver area, allowing compact mounting through a central arrangement that enables balanced wiring at both sides of the LCD display unit.
Hitachi plans to further extend the product lineup in the future with the development of models capable of handling a variety of display screen sizes.
< Typical Applications >
< Prices in Japan >(For Reference)
< Specifications >
|Information contained in this news release is current as of the date of the press announcement, but may be subject to change without prior notice.|
|WRITTEN BY Corporate Communications Division