| Above |
Left: |
HD66774 |
Right: |
HD66775 |
| Below |
Left: |
HD66772 |
Right: |
HD667P01 |
Tokyo, October 11, 2001 -Hitachi, Ltd. (TSE: 6501) today announced
the HD66772/HD66774/HD66775/HD667P01 graphic display LCD controller
driver chip set for TFT color LCD panels installed in next-generation
digital mobile phones and similar products. Sample shipments will
begin in November 2001 in Japan.
This chip set supports 176 
240-pixel TFT color LCD panels--the industry's largest class of display
screen size for mobile phone use--and offers 262,144-color display
capability at a low power consumption of 4.5 mW. It also incorporates
a high-speed moving picture interface offering smooth moving picture
display as an industry first, making it ideal for next-generation
mobile phone systems and similar products.
[Background]
These days, information displayed on digital mobile phones includes
still images such as photographs provided via a mounted miniature
camera in addition to text and graphic information, and the trend
in next-generation mobile phones is one of moving image displays capable
of representing a greater variety of colors. As a result, the move
in LCD panels for next-generation mobile phones is toward larger screens
to handle increasing volumes of display information together with
a greater color range for more realistic color representation. Meanwhile,
in the area of TFT LCD construction, low-temperature polysilicon TFT
LCDs offering high resolution even on screens under two inches in
size have appeared on the market in addition to the amorphous TFT
LCD panels that are the current mainstream type, and use of these
new LCDs is expected to increase in the future. In these circumstances,
there is a strong demand for LCD controller drivers that can handle
low-temperature polysilicon TFT LCDs as well as supporting larger
screens and a greater range of colors.
Hitachi is now releasing the HD66772/HD66774/HD66775/HD667P01 chip
set for TFT color LCD panels installed in next-generation mobile phones
to meet the demand for large screens, high picture quality, and moving
picture display capability. The products in this chip set are as follows:
| (1) |
HD66772: |
A 528-output source driver,
incorporating display buffer memory supporting 262,144 colors
and a display controller |
| (2) |
HD66774: |
A 240-output gate driver
(incorporating a power supply circuit for LCD drive voltage generation) |
| (3) |
HD66775: |
A 120-output gate driver |
| (4) |
HD667P01: |
A power supply LSI for
generating the LCD drive voltages supplied to the source driver
and gate driver, supporting both low-temperature polysilicon TFT
LCDs and amorphous TFT LCDs |
[Features of the Chip Set]
| (1) |
Supports 176 
240-pixel large-screen display and 262,144-color display equivalent
to the number of display colors of a PC.
|
| (2) |
High-speed moving picture display made possible
through the incorporation of the industry's first moving picture
interface
The HD66772 is the main device in this chip set, incorporating
a moving picture RGB direct interface that enables RGB signals
to be received. This allows reception of RGB signals directly
from an MPEG4 or similar graphic processing LSI, enabling high-speed
display of moving picture data at 30 frames per second--equivalent
to TV display--for smooth moving picture display.
|
| (3) |
Combination supporting low-temperature polysilicon
TFT LCDs and mounting forms enabling compact mounting
This chip set offers the three combinations shown below. Available
mounting forms are COF*1 and COG*2 for the
HD66772, COF for the HD66774, COF and COG for the HD66775, and
COF for the HD667P01. These offer a choice of chip set combinations
and mounting forms to suit various LCD panel design requirements,
and allow compact mounting that makes it possible to implement
a central arrangement enabling balanced wiring at both sides of
the panel.
|
| |
(a) Amorphous
TFT LCD: |
HD66772 + HD66774 (COF)
Two-chip configuration for low cost and easy panel design |
| |
(b) Amorphous TFT LCD: |
HD66772 (COG) + HD66775
2 (COG) + HD667P01 (COF)
Four chips are required, but COG mounting enables the mounting
area to be reduced. |
| |
(c) Low-temperature polysilicon TFT
LCD:
|
HD66772 + HD667P01 (COF)
|
| (4) |
Low power
consumption equivalent to STN color LCD panel
In these products the LCD drive output circuitry has been specially
devised to reduce power consumption. This makes it possible to
achieve power consumption of approximately 4.5 mW, including the
panel, with an amorphous TFT LCD--the same low level as with an
STN color LCD panel. |
Hitachi plans further expansion of the product lineup in the future,
including the development of products supporting even higher definition.
| Notes: |
1. |
COF (Chip On Film): A mounting method in which a
chip with a gold bump is directly mounted face-down on a flexible
film substrate.
|
| |
2. |
COG (Chip On Glass): A mounting method in which
a chip with a gold bump is directly mounted face-down on the LCD
glass. |
< Typical Applications >
• Mobile phones handling e-mail and WWW content
services
• Mobile phones supporting high-speed data transfer
(W-CDMA, GPRS, etc.)
• Small PDAs, handheld GPS terminals, handheld
POS devices
< Prices in Japan > (For Reference)
| Product Code |
Shipment Form |
Sample Price (Yen) |
| HD66772 |
HCD667A72BP |
Chip with gold bump
(straight layout) |
2,200 |
| HCD667B72BP |
Chip with gold bump
(staggered layout) |
2,200 |
| HCD66774BP |
Chip with gold bump |
840 |
| HCD66775BP |
Chip with gold bump |
320 |
| HCD667P01BP |
Chip with gold bump |
400 |
< Specifications >
| Item |
HD66772 Specifications |
| Display size |
176
240 pixels, 262,144 colors |
| Number of outputs |
528 source outputs |
| Display RAM size |
95,040 bytes |
| Display functions |
• Window address function (rectangular
RAM address area writing)
• Dual-screen partial display function (screen division at
arbitrary line) |
| Bit operation functions |
• Write data mask function (bit
units)
• Bit operation function (pixel units) |
| LCD drive duty |
1/16 to 1/240 (programmable in 8-line units) |
| Interfaces |
80-type 8/9/16/18-bit bus
High-speed moving picture interface: 6/16/18 bits
Synchronous serial interface support
Gate power supply dedicated serial interface |
| Write cycle |
100 ns (3V power supply voltage) |
| Logic power supply voltage |
1.8 V to 3.3 V |
| LCD drive voltage |
4.5 V to 5.5 V |
| Shipment forms |
• Chip with gold bump (for COF or
COG mounting) |
| Item |
HD66774 Specifications |
| Number of outputs |
240 gate outputs |
| Interfaces |
Dedicated serial interface |
| Logic power supply voltage |
1.8 V to 3.3 V |
| LCD drive voltage |
±9 V to ±16.5 V |
| Step-up circuit |
5
to 9 + polarity
inversion
Source power supply output: 4 V to 5 V
Gate power supply output: ±9 V to ±16.5 V |
| Shipment forms |
• Chip with gold bump
(for COF or COG mounting)
• Custom TCP |
| Item |
HD66775 Specifications |
| Number of outputs |
120 gate outputs |
| Interfaces |
Dedicated serial interface |
| Logic power supply voltage |
1.8 V to 3.3 V |
| LCD drive voltage |
±9 V to ±16.5 V |
| Shipment forms |
• Chip with gold bump
(for COF mounting)
• Custom TCP |
| Item |
HD667P01 Specifications |
| Interfaces |
Dedicated serial interface |
| Logic power supply voltage |
1.8 V to 3.3 V |
| Step-up circuit |
5
to 9 + polarity
inversion
Source power supply output: 4 V to 5 V
Gate power supply output: ±7 V to ±16.5 V |
| Shipment forms |
• Chip with gold bump
(for COF mounting)
• Custom TCP |
|
