Will Images Quality Improve in a 3D HDTV With Faster Refresh Rate?
That 120 Hz TV sets would always remain more superior to the 240 Hz HD TVs is quite well known. Now we are faced with a new question in the changing times where we are witnessing a 3D revolutions: Does this also apply to 3D TVs?
This issue has been pointed out by many other HDTV reviewers. The 120 Hz LCD and LED HDTVs have always provided the user with better quality images than 60 Hz models. However 240 Hz TV sets are in no way better than the 120 Hz ones. However, this applies to only 2D TVs. When you talk about the 3D TVs, things get even more intense and complex.
The 3D TVs are supposed to exhibit two different pictures at the same time. Since this is not possible in reality, the TV switches back and forth in between the two images. Consequently the refresh rate gets doubled.
This is comparatively clearer in case of the HDTVs as they use highly expensive and heavy shutter glasses. In case of 3D you require a 240 Hz set to provide 120 Hz quality because when the set switches between the two frames the glasses shut off light to the eyes one by one.
Complications increase with the use of cheap and light passive glasses in the HDTVs. The way of handling depends on the company. For example let us consider the working of LG. It displays together left image odd numbered lines with right image even numbered lines. With one more refresh one finds the left image even numbered lines and the right image odd numbered lines i.e. one clicks first half of the image while the second click shows the second half. Which means display of each image requires two clicks just like in case of 2D TVs.