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The operation of TN, VA and IPS-LCDs can be summarized as follows: a well aligned LC configuration is deformed by an applied electric field, this deformation changes the orientation of the local LC optical axis with respect to the direction of light propagation through the LC layer,
A comparison in 2014 of IPS vs. TN panels concerning color consistency under different viewing angles can be seen on the website of Japan Display Inc. [19] Also, compared to TN panels, IPS panels can display more color spaces. Unlike TN LCDs, IPS panels do not lighten or show tailing when touched.
The other two types are VA and TN. Before LG Enhanced IPS was introduced in 2001 by Hitachi as 17" monitor in Market, the additional transistors resulted in blocking more transmission area, thus requiring a brighter backlight and consuming more power, making this type of display less desirable for notebook computers.
Extremely bulky and heavy construction in comparison to other display technologies. Large displays would be unsuitable for wall mounting. New models are no longer produced. The LCD grid can mask effects of spatial and grayscale quantization, creating the illusion of higher image quality. [52]
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Modern TN displays can look significantly better than older TN displays from decades earlier, but overall TN has inferior viewing angles and poor color in comparison to other technology like IPS. Most TN panels can represent colors using only six bits per RGB channel, or 18 bit in total, and are unable to display the 16.7 million color shades ...
Another industry trend was the consolidation of plasma display manufacturers, with around 50 brands available but only five manufacturers. In the first quarter of 2008, a comparison of worldwide TV sales broke down to 22.1 million for direct-view CRT, 21.1 million for LCD, 2.8 million for plasma, and 0.1 million for rear projection. [33]
IPS was first studied in a randomized controlled trial in 1996. [3] Between 1996 and 2011, IPS was evaluated in 15 randomized controlled trials. [4] This research has established IPS as an evidence-based practice in community psychiatry. Studies in this body of research typically compare IPS to another approach to vocational rehabilitation.