120 Hz

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120 Hz

The frame rate of many modern flat panel TVs, which is designed to improve fast action and movies by providing smoother transitions from frame to frame. The TV doubles the common digital frame rate of 60 frames per second (fps) to 120 fps by duplicating each frame and displaying them all in one second. However, the duplicated frames are altered (interpolated) to become transition frames between the original frames and the following ones (see below).

Another advantage to 120 Hz is that it improves the conversion of movies shot at 24 fps to TVs that run at 60 fps (60 Hz). In order to fit 24 movie frames into 60 TV frames, the traditional telecine method generates uneven transitions because 24 does not divide evenly into 60. Telecine converts one frame into three frames and the next frame into two frames, called "3:2 pulldown." However, since 24 divides evenly into 120, every movie frame can be interpolated into five video frames, known as "5:5 pulldown." In addition, HDTVs have also been made with 48, 72 and 96 Hz frame rates because 24 divides evenly into these numbers. See 240 Hz, 480 Hz and telecine.

Duplicate and Smooth
By doubling the frame rate, a transition frame can be created between each two original frames.

5:5 Pulldown
Since 24 divides evenly into 120, each film frame shot at 24 fps can be converted into the same number of video frames. See telecine.
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References in periodicals archive ?
The TV has a clear motion rate of 120Hz, which means that its real refresh rate is 60Hz.
Featuring the Alienware's new Legend industrial design, the Alienware 55 OLED Gaming Monitor offers a 120Hz variable refresh rate, response time of 0.5ms (gray-to-gray), and low input latency so images get to the screen much faster allowing a gamer's reactions to be quicker, more accurate and ahead of the competition.
The new curved monitor pulls gamers right into the gaming action with an immersive 1900R curved, wide 21:9 WQHD-resolution monitor.Alienware'sfirst 34-inch WQHD 120Hz curved gaming monitor with fast IPS response time mode and IPS Nano Color technology that provides 98% DCI-P3 color coverage, along with a 120Hz (native) refresh rate and NVIDIA G-SYNC display technology that offers smooth and realistic images.
We know that this year's iPhone won't be upgraded to the 120Hz OLED Retina display which promises crisp and vibrant graphics, so that's already a big issue to consider if you're also contemplating on next year's phone. 
This includes immersive surround sound audio, ultra-high definition 4K visuals at 120Hz, and significantly faster game loading times.
Standing tall at 6.67" and with a 93.22 per cent screen to body ratio, the display on the Pro model is quite beautiful but then why didn't the company jump straight to a 120Hz display?
Paired with the Radeon RX 560X graphics, the ASUS TUF Gaming FX505DY also features a 120Hz IPS level NanoEdge display with AMD Radeon FreeSync technology, stutter- and tear-free visuals when gaming.
What's more, its high refresh rate of 120Hz (overclocked) means that objects are rendered more clearly for smoother gameplay and seamless visual fluidity.
Although, it's just a 60Hz panel as opposed to 120Hz on the Razer.
Foremost, the Razer Phone has the first-ever 120Hz refresh rate for its 5.7", 1,440 X 2,560 pixel display to eliminate motion blur.
For a truly immersive gaming experience, the VR-ready Predator Triton 700 offers bright, vibrant visuals on a 15.6-inch Full HD IPS display with 120Hz refresh rate and supporting NVIDIAEeA G-SYNCaAaAo for buttery-smooth gameplay.