Samsung Exhibits 400ppi-Equivalent LCD Panel for Cell Phones

Apr 14, 2004

Samsung Electronics Co, Ltd of Korea exhibited a variety of panels, including a 2.03-inch LCD panel with the resolution equivalent to 400ppi, and a 1.83-inch QVGA-size LCD panel with the resolution of 223ppi, at the 19th "EDEX 2004 Electronic Display Exhibition."

The 2.03-inch panel developed by Samsung features Amorphous Si TFT technology.

While the number of pixels in the panel remains 240 x 640, the high-resolution display equivalent to the VGA format (400ppi and 480 x 640 pixels) was achieved with the company's original "Four Color Rendering" (4CR) technique, according to the company. It achieves the luminance of 200cd/m2, a contrast ratio of 200:1, and 262,000 colors for the display. The color reproduction area against NTSC is 70%.

Samsung's 4CR is a technique to realize high resolution with fewer pixels by utilizing RGB sub-pixels on the adjoining scan lines in color and gradient renderings.

To achieve the same purpose, there is also a technique called "field sequential (FS)," in which each pixel is divided sequentially, and colors are displayed in the order of RGB.

Although the company has already developed several LCD panels featuring the FS technique, "this time, 4CR is a kind of 'space division' technique," said Roh Nam Seok, of the company's LCD business LCD R&D center, FPD device team senior engineer, to explain the difference from the FS technique.

Samsung introduced its first 4CR LCD panel at SID 2003, held in May 2003.

"At SID 2003, our target for the development and exhibition was LCD televisions. However, because the resolution at the time was as poor as 38ppi, we could not move to commercial production without making an improvement. This time, the resolution was raised to an equivalent of 400ppi, targeting cell phones. It used four ICs for data, timing, power control, and 4RC as the driver IC. With a view to launching mass production in the summer of 2004, we are working on integration of these ICs," Roh said.

Also, the company developed and exhibited a 1.83-inch QVGA (240 x 320) LCD panel with the resolution of 223ppi. This model features a low-temperature polycrystalline Si TFT called "single crystal like Si (SLS)," and has a contrast ratio of 250:1, and measures 33.3mm x 47.2mm x 2.9mm.

Explore further: Greenland darkening to continue, predicts CCNY expert Marco Tedesco

Related Stories

LG Display takes high jump in panel for phones

Apr 04, 2015

Quad High-Definition. That's a phrase you're likely to see more and more of this year, as Seoul, Korea-based LG Display announced Friday it is launching a 5.5-inch QHD LCD panel for smartphones. So what? ...

OLED experts to advance improved production techniques

Oct 08, 2014

Back in May, Steven Shankland in CNET said that, for the lighting business, "the next technology is coming: OLED (organic light-emitting diode) lighting. It replaces the small, bright dots of LEDs with sheets of light that aren't so piercingly bright." Now MIT Technolog ...

Roll-up TV is 18-incher, expect 60-inch plus by 2017

Jul 10, 2014

Mention "new curved or flexible displays" and that is quite enough to get all the media dogs barking. Thursday's news went further. LG Display announced two new 18-inch OLED panels: the first is a transparent ...

LG Display will release HD panel for smartphones

May 29, 2012

(Phys.org) -- LG Display is getting ready to showcase a five-inch smartphone display that turns out to be a full HD LCD panel supporting up to 1080p video, something like having a high-quality TV in your hand. ...

Glasses-free ultrahigh-definition 2D/3D switching display

Dec 30, 2014

Toshiba Corporation has developed a new technology for glasses-free 3D displays that uses a low-crosstalk, high-definition LCD GRIN lens with a 15-inch 4K LCD panel. The technology realizes a highly portable, compact display ...

Samsung, LG to unveil 105-inch curved TVs

Dec 19, 2013

Samsung Electronics Co. and LG Electronics Inc. said their curved TVs will get bigger and sport the sharpness four times the regular HD television sets.

Recommended for you

Google big Android Wear update adds functions, fun

1 hour ago

Android Wear's Monday announcement of new features is drawing many compliments from those watching out for what's next in making a smartwatch purchase. The new attractions include the lightness of wearing ...

Data deluge: MLB rolls out Statcast analytics on Tuesday

2 hours ago

Which outfielder sprints the fastest and runs the longest to snag line drives into the gap? Which shortstop is best at throwing from the grass to nip the runner at first? Which catcher gets the ball to second ...

IBM earnings dip as sales fall again

12 hours ago

Technology heavyweight IBM reported Monday lower profits in the first quarter following another drop in revenues, this time partly due to the strong dollar.

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.