Hitachi Begins Production of 800x480 Phone Displays
Anh Tuan Huynh
December 28, 2006 11:58 AM
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Hitachi's 800x480 mobile phone display - Image courtesy Tech-On
2.9" and 800x480 to boot
Mobile web browsers rejoice as
Hitachi has started mass producing its newest LCD mobile phone display according to Japanese site
. The new LCD is 2.9 inches and sports the highest resolution ever found on a mobile phone display—800x480.
The added resolution will allow users to browse mobile web pages easier without having to scrolling side-to-side for less phone friendly web pages. However, the real payoff for such displays is the ability to play 480i content with menus.
The bump to 800x480 is a fairly large pixel increase from the current QVGA (320x240) screens found on most new phones and a moderate increase from VGA (640x480) screens used in some PDA phones.
The new 2.9” LCD uses IPS LCD technology instead of TN typically used in mobile displays today. The advantages of IPS over TN are wider viewing angles, better color reproduction and faster response times. This results in a 170 degree vertical and horizontal viewing angle and a 400:1 contrast ratio. Hitachi owns the rights to IPS technology, but most LG.Philips LCD panels use some derivative of the technology for desktop displays.
There’s no mention when and which phone manufacturers will release products based on the new display.
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IPS instead of TFT?
12/28/2006 2:43:30 PM
IPS instead of TFT is a bit confusing. All active matrix LCD's use Thin Film Transistors. The alternative to TFT is passive matrix which only works at small sizes and is not energy efficient. Perhaps adding the word "Standard" in front of TFT would clarify a little.
RE: IPS instead of TFT?
12/28/2006 3:01:37 PM
That should read TN instead of TFT. Sorry for the confusion.
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