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|Hitachi Releases HD66776/HD667P10 LSI chipset
for Low-Temperature Polysilicon
TFT Color Liquid Crystal Display System using for Mobile Phones
| Supporting low-temperature polysilicon TFT color liquid crystal displays capable of 256 × 320-pixel high-definition display with a 2-inch screen size, and offering 262,144-color display capability |
Tokyo, July 25, 2002 Hitachi, Ltd. (TSE: 6501) today announced the HD66776/HD667P10 chip set LSIs supporting a 256 × 320-pixel high-definition screen and 262,144-color display, as low-temperature polysilicon TFT color liquid crystal display system for equipped in products such as digital mobile phones. Sample shipments will begin in August 2002 in Japan.
This chip set supports low-temperature polysilicon TFT color liquid crystals that enable 256 × 320-pixel high-definition display with a 2-inch screen size, and offers 262,144 display colors capability, for realistic moving-picture display. A high-speed moving-picture interface is also incorporated, enabling fast writing of MPEG-4 and similar moving-picture data that provides smooth moving-picture display capability. In addition, power consumption during still-picture display is a low 6 mW, making this chip set ideal for use in next-generation mobile phones featuring high-definition, high-quality displays.
Screen size of digital mobile phones has grown larger as the volume of display information, including image data, has continued to increase. The trend in next-generation mobile phones will be one of a constantly growing volume of screen display information to meet the need for more versatile displays as models become more sophisticated and user-friendly, to include TV-phone functions and PDA-like features, as well as amusement features and detailed map displays etc.
However, the presently most popular 2-inch screen size is virtually the largest possible size for current mobile phone designs, and increasing the screen size would entail a corresponding increase in the size of the phone itself.
Consequently, attention has been focused on achieving higher display pixel densities, and progress has been made in developing elements that enable greater amounts of information to be displayed on the same size of screen, with low-temperature polysilicon TFT being one such type of element. The density of low-temperature polysilicon TFT display pixels is around 200 ppi (pixels per inch), approximately twice that of current mainstream amorphous TFT displays, making it possible to achieve a high-definition display with approximately 4 times as many pixels in the same screen size. With the ability to achieve such a clear, high-quality display, there is a strong demand for LSIs capable of handling low-temperature polysilicon TFT color liquid crystal displays.
In response to this market need, Hitachi is releasing the HD66776 and HD667P10 LSI chipset, with 256 × 320-pixel support capability, as a low-temperature polysilicon TFT color liquid crystal display system.
The HD66776 is an LSI incorporating a 256-output source driver together with display buffer memory and a display controller supporting 262,144 colors in a single chip, while the HD667P10 is an LCD power supply LSI incorporating a gate interface level-shifter circuit. Major features of this chip set are summarized below.
< Features of the Chip Set >
The HD66776 and HD667P10 are shipped as chips with gold bumps, with COG*1 supported as the mounting mode for the HD66776, and COF*2 for the HD667P10.
Hitachi plans further extension of the product lineup in the future,
including the development of products supporting even higher definition.
< Typical Applications >
< 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