What is Hz on LCD TV?
Hz is short for “Hertz”, the unit of measurement used when talking about the refresh rate of image displays on television screens. The use of “Hz” was used in older television sets that were manufactured using the CRT or cathode ray tube technology. It is said that the image display on television sets with higher Hz value are better than those with lower Hz values.

LCD television sets are manufactured using the latest technology and this time the screens are flat. But LCD television sets are able to display images on-screen in a different manner when compared with CRT or “tube” TV’s. For experts, the Hz value used on LCD television sets is actually a “borrowed” term from the past to indicate the “frames per second” capability of the image display. The first LCD screens that came out were said to have a fixed page-update rate of around 50Hz and this causes blurring on the screen. This is especially noticeable when watching shows that involve frequent screen changes like sports events. With a minimal refresh rate, LCD screens would produce shadows and blurs. And because of this concern, TV manufacturers developed a technology to counter the blur effects and increase the image display rate or “frames per second rate”. It is through this new technology that the Hz or Hertz is used again to indicate the frames-per-second capability of LCD screens. Newer LCD TV sets nowadays have 100 Hz up to 240 Hz. The Hz represents the actual frames per second image display. A 120 Hz LCD TV simply means that this TV has a frames per second rate of 120.

But not all is well though for this new technology. Some people consider the faster image display rate as causing too much sharpness on the image details. Some LCD TVs with high Hz values may even create some background noise which may annoy some consumers.