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TOKYO, April 16, 2001 --Mitsubishi
Electric has finished development of a reflective-type miniature
thin film transistor (TFT) color liquid crystal display (LCD) for
moving images in mobile phones and PDAs. Taking advantage of Mitsubishi
Electric's proprietary semiconductor technology, the product uses
low-temperature polysilicon TFT technology to provide a miniature
vivid display with low-power consumption. This new TFT color LCD
will be on display April 18-20 at the Electronic Display Exhibition
(EDEX) 2001, sponsored by the Japan Electronics & Information Technology
Industries Association (JEITA).
Product Features
Low-power consumption display achieved through Memory Embedded
LCD mode
Advancing beyond existing power-saving technology, Mitsubishi Electric
has adopted a Memory Embedded LCD mode by applying its own semiconductor
technology developed in-house. With high-bit DRAMs embedded into
each pixel, digital image data is put into memory thereby achieving
lower power consumption (in energy conservation mode: 4milliWatts).
Consolidated drive circuit type miniature display
A symmetrical miniature display with a narrow picture frame has
been achieved by applying low-temperature polysilicon TFT technology
and putting the drive circuit above the baseboard.
High quality display for moving images
By using Mitsubishi Electric's proprietary Memory Embedded LCD mode,
a screen on standby mode can be triggered digitally. Also, a 4,096
color display is provided by embedding high-bit DRAMs into each
pixel that can correspond to 4-bit RGB signals. For the display
of moving images, a driver mode suitable for high-speed response
and low-temperature polysilicon TFT has been adopted which is capable
of displaying more than 65,000 colors.
Background
With the rapidly developing sophistication and high color count
of mobile phones and PDAs, demand is increasing for miniature, low-power
color displays with high-quality images. Mitsubishi Electric has
responded to this need by taking advantage of its expertise in high-
quality images for TFT LCDs used in flat panel monitors for notebook
PCs. This miniature TFT LCD has been developed by adopting the company's
proprietary circuit mode and low temperature polysilicon technology.
Specifications
| Display type |
Reflective-type low temperature
TFT color LCD |
| Screen size |
2.15 type (5.4cm, diagonally) |
| Number of pixels |
132 x 162 |
| Pixel pitch |
0.261mm |
| Number of colors |
Energy conservation mode: 4,096
Normal mode: 65,000 |
| Contrast |
30:1 |
| Reflection rate |
50% |
| Response time |
30ms |
| Power consumption |
Energy conservation mode: 4mW
(Including panel and peripheral circuits) |
| Dimensions |
41.0 x 57.5 x 1.8mm3 |
| Other features |
DRAM embedded into every pixel,
low power consumption |
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About Mitsubishi Electric
Corporation
With 80 years of experience
in providing reliable, high-quality products to both corporate clients
and general consumers all over the world, Mitsubishi Electric Corporation
(FTSE: 6503q.l) is a recognized world leader in the manufacture,
marketing and sales of electrical and electronic equipment used
in information processing and communications, space development
and satellite communications, consumer electronics, industrial technology,
energy, transportation and construction. With operations in 36 countries,
Mitsubishi Electric Corporation recorded consolidated group sales
of over $35bn in the year ended March 31, 2000. Additional information
on Mitsubishi Electric Corporation is available at global.mitsubishielectric.com.
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