Samsung D61B Training Manual page 89

Glossary
• Cm - Michelson contrast or contrast modulation:
Here, Lw is the luminance of the color white while Lb is the luminance of the color black.
• CT - Threshold contrast ratio: the minimum contrast ratio that is permissive, in general.
Chip on board(COB) :
PCB with IC on substrate.
Dark defect :
Defects in the brighter image realization than normal one.
Data electrode :
Electrodes allowed for controlling electric discharge by changing the cell's state to switch on from off (and
vise versa) in AC plasma panel.
Data electrode driver :
Driving circuit to be attached to dada electrode.
Data write pulse :
Wave form for data electrode that switches from off to on.
Data erase pulse :
Wave form for data electrode that switches from on to off.
DC PDP :
Display panel whose plasma discharge is driven by direct current.
Decay time :
Time required for parameters to drop from certain level to another. It can be time necessary for dropping
from 90% to 10%, or to e-1 level of the initial value, or to certain irreversibility.
Dielectric layer :
Dielectric layer with larger sustained electric constant.
Discharge :
1. neutralization of electric charge (for example, voltage decrease of capacitor)
2. electric current flow in dielectric media such as gas.
Discharge current :
Discharge electric current.
Discharge electrode :
Another term for sustained electrode.
Discharge efficiency :
Another term for gloss efficiency
Discharge gap :
The gap among sustained electrodes in discharge space of three-electrode plasma panel.
Discharge slit :
(Refer to discharge gap)
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