ASUS Launches PQ321 Monitor with 3840 x 2160 IGZO Display

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ASUS today announced the PQ321 True 4K UHD Monitor, a desktop display with a stunning Ultra HD 3840 x 2160 resolution that’s equivalent to four Full HD displays stacked side-by-side. The PQ321 has a 31.5-inch LED-backlit 4K Ultra HD display (140 pixels-per-inch) with 16:9 aspect ratio, and supports 10-bit RGB ‘deep color’ for vibrant images with more natural transitions between hues.

Cutting-edge IGZO panel technology
The ASUS PQ321 True 4K UHD Monitor uses cutting-edge Indium Gallium Zinc Oxide (IGZO) rather than traditional amorphous silicon for the active layer of its LCD panel. IGZO panels support much smaller transistors than amorphous silicon, which in turn gives much smaller pixels and the 3840 x 2160 resolution of the PQ321 is four times that of a 1920 x 1080 Full HD display.

176-degree wide viewing angles on both vertical and horizontal planes minimize onscreen color shift, while the 350cd/m² brightness rating and 8ms gray-to-gray response time ensure smooth, bright, and vibrant moving visuals. IGZO technology also gives reduced energy consumption compared to amorphous silicon and reduces bulk — at 35mm at its thickest point, the PQ321 is the thinnest 4K UHD monitor available today.

Comprehensive video inputs for UHD content
The ASUS PQ321 True 4K UHD Monitor features DisplayPort and US models offer dual-HDMI ports inputs with Picture-by-Picture support. Built-in 2W stereo speakers remove the need for additional desktop clutter and, in addition to being wall-mountable, the monitor stand offers full height, swivel, and tilt adjustment.

ASUS will be exhibiting the 39-inch and 31.5-inch True 4K UHD Monitor models at Computex 2013 in Taipei.

The ASUS PQ321 True 4K UHD Monitor will be available in North America in the end of June. Please contact your local ASUS representative for further information.


Display size

31.5 inches  (80.1cm) with 16:9 aspect ratio

Display type

IGZO LED backlit


3840 x 2160

Pixel pitch

0.182 mm (140ppi)

Display colors

1.07 billion (10-bit RGB)

Viewing angles

176 degrees (H) / 176 degrees (V)

Brightness (maximum)

350 cd/m²

Response time

8ms (Gray to Gray)

Color temperature selection


Gamma adjustment



DisplayPort, 2x HDMI (optional), RS-232C, 3.5mm audio-in, 3.5mm audio-out

Built-in speakers

2W stereo

Mechanical Design

Tilt, swivel, height adjustment and VESA wall –mountable


AC adapter, power cable, DisplayPort 1.2 cable, RS-232C conversion cable, warranty card


750 x 489 x 256mm with stand

Estimated net weight


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