Absorption Effects
The state of polarization of the light traveling through the LC layer cannot be perceived by human observers, it must be converted into intensity (e.g. luminance) in order to become perceivable. This is achieved with absorption by dichroic dyes and dichroic polarizers.
| Absorption Effects | |
| internal absorption (dichroic dyes dissolved in LC), guest-host LCDs |
external dichroic polarizers |
|---|---|
| non-twisted configurations with dichroic dyes | electrically controlled birefringence, ECB |
| twisted configurations with dichroic dyes | twisted nematic field-effect, TN |
| supertwisted nematic effects, STN, the total twist is > 90° SBE (supertwisted birefringence effect) |
|
| in-plane switching effects, IPS fringe-field switching effect, FFS |
|
| vertically aligned effects, VA multi-domain vertical alignment, MVA patterned vertical alignment, PVA |
|
| PI-cell (aka OCB-cell) OCB: optically compensated bend-mode |
|
| cholesteric-nematic phase-change with dichroic dyes | |
Read more about this topic: LCD Classification
Famous quotes containing the words absorption and/or effects:
“These philosophers dwell on the inevitability and unchangeableness of laws, on the power of temperament and constitution, the three goon, or qualities, and the circumstances, or birth and affinity. The end is an immense consolation; eternal absorption in Brahma.”
—Henry David Thoreau (1817–1862)
“Like the effects of industrial pollution ... the AIDS crisis is evidence of a world in which nothing important is regional, local, limited; in which everything that can circulate does, and every problem is, or is destined to become, worldwide.”
—Susan Sontag (b. 1933)