LCD classification
There are various classifications of the electro-optical modes of liquid crystal displays (LCDs). == LCD operation in a nutshell == 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, this change of orientation changes the polarization state of the light propagating through the LC layer, this change of the polarization state is converted into a change of intensity by dichroic absorption, usually by external dichroic polarizers.