Polymer Stabilized Vertical Alignment (PSVA) is one of several techniques used to increase the contrast ofLCD displays
. Other techniques are Multi-Domain Vertical Alignment
(MVA) and Patterned Vertical Alignment (PVA). In the PSVA technique, polymer layers are deposited
on the inside of the glass instead of the microscopic glass protrusions that are common in other techniques.
These polymer layers form a thin polymer network with which the liquid crystals are stabilized on the surface.