Note: I am working on a review of BenQ’s PD3200U and started to dig into AHVA, which is the wide viewing angle display technology used in the 32-inch UHD IPS LCD panel. Instead of adding this portion to the review I’ve decide it would better serve DISPLAYBLOG readers to have a separate article detailing AHVA.
AHVA stands for Advanced Hyper-Viewing Angle and is developed by AU Optronics (AUO). The ‘VA’ portion of the name is not connected to Vertical Alignment, therefore AHVA does not exhibit color and gamma shifts at wide viewing angles. There are many varieties of IPS technologies such as e-IPS, H-IPS, P-IPS, S-IPS, etc. And there are other IPS-like liquid crystal orientation and manipulation technologies such as Super PLS (Plane to Line Switching) developed by Samsung.
AUO began investing in the company’s own IPS-type wide viewing angle LCD technology in 2012. Performance and specifications are similar to LG Display’s IPS and Samsung’s PLS technologies. Starting around 2015 or so brands equipped their smartphones, tablets, laptops, monitors, and TVs with IPS LCDs to show potential customers their devices featured the best in display technology. For those who need color accuracy there is no better LCD technology than IPS — AUO as well as all of the major LCD manufacturers knew that — and AUO’s AHVA is the company’s IPS offering.
This is a slight tangent, but targeting the rapidly growing gaming market AUO was first to offer 144 Hz AHVA LCD panels in September 2014. The model number was M270DAN02.3 and you can find technical specifications at Hexus and Panelook. Here’s a partial list of the earliest monitors to have incorporated AUO’s 144 Hz AHVA LCD (source: PC Hardware Help): Acer XB270HU (27-inch, 2560×1440, NVIDIA G-Sync), Acer XF270HU (27-inch, 2560×1440, AMD FreeSync), Acer XR341CK (34-inch, 3440×1440, NVIDIA G-Sync), ASUS PG279Q (27-inch, 2560×1440, ULMB1, NVIDIA G-Sync), Enzo Foris FS2735 (27-inch, 2560×1440, AMD FreeSync), and Nixeus EDG 27 (27-inch, 2560×1440, AMD FreeSync).
AUO is based in Taiwan and was originally Acer Display Technology, founded in August 1996. In September 2001 Acer Display Technology and Unipac Optoelectronics Corporation merged and renamed the merged company as AU Optronics. Later, in October 2006, Quanta Display was acquired (source: Wikipedia).
- ULMB stands for Ultra Low Motion Blur. NVIDIA designed and developed ULMB to reduce motion blur by using strobing, similar to how a CRT display operates. ULMB’s benefits of reduced motion blur is most noticeable in fast-paced FPS (first-person shooter) games. Unfortunately ULMB cannot be used at the same time as G-Sync. (Only NVIDIA G-Sync enabled monitors allow ULMB mode.) A negative is a decrease in picture quality and brightness in ULMB mode. One possible additional negative of ULMB is that some people who are extra sensitive to flickering might notice flicker on the monitor (source: BlizzGC).