IPS panel


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IPS panel

(In-Plane Switching panel) An active matrix (TFT) LCD screen technology developed by Hitachi in the mid-1990s that provides more uniform color reproduction and greater viewing angles than traditional twisted nematic (TN) LCDs. Maturing for more than a decade, IPS was deployed in iPads and various Android tablets. Viewers greatly appreciate the wide angle and color quality, because tablets are often used as movie viewers, videophones and electronic photo albums.

In-Plane Twisting
With subsequent versions branded as "Super TFT," "Super-IPS" (S-IPS), "Advanced Super-IPS," "Enhanced S-IPS" and so on, the IPS liquid crystal molecules remain parallel to the front and back panels rather than turning perpendicular when a voltage is applied. Unlike TN LCDs, which have electrodes at top and bottom panels, IPS uses an electrode pair at the bottom panel. However, the extra transistor on the bottom panel blocks more surface and requires a brighter backlight and more power. See LCD and active matrix.


IPS Vs. TN
When energized, the liquid crystals in an IPS screen twist in the same plane ("in plane") as the panels. In the ubiquitous twisted nematic (TN) display, the crystals become more perpendicular to the top panel. See LCD subpixels.
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