IPS - in-plane switching LCD monitor technology
Example of IPS application:
from marketing material for the NEC monitors:
"The MultiSync 90 Series [LCD-24,90-WUX.i , LCD-26,90-WUX.i] utilize
the highest-quality active matrix
LCD modules used in professional flat-panel, wide-angle monitors.
Each has slightly different characteristics that make them
suitable for different types of applications. The in-plane switching
(IPS) type module (indicated with an “i” in 90 Series model
names) boasts the best possible color and grayscale accuracy
and minimal gamma (brightness tone) shift at off angles. These
features make IPS LCDs more suitable for demanding, color-critical
applications, while dark black colors and excellent grayscale
reproductions make the IPS panel ideal for medical applications.
In addition, the MultiSync LCD2690WUXi achieves 93.4% coverage
of the Adobe RGB color space."