OSD056TN52 Datasheet, PDF (18/22 Pages) List of Unclassifed Manufacturers – LCD MODULE SPECIFICATION

Note 3: Definition of Response time
The response time is defined as the LCD optical switching time interval between
“White” state and “Black” state. Rise time (T_ON) is the time between photo detector output
intensity changed from 90% to 10%. And fall time (T_OFF) is the time between photo
detector output intensity changed from 10% to 90%.
White (TFT OFF)
Black (TFT ON)
White (TFT OFF)
100%
90%
10%
0%
T_ON
T_OFF
Fig. 4-3 Definition of response time
Note 4: Definition of contrast ratio
Luminance measured when LCD is on the " White" state
Contrast ratio (CR) =
Luminance measured when LCD is on the "Black" state
Note 5: Definition of color chromaticity (CIE1931)
Color coordinates measured at center point of LCD.
Note 6: All input terminals LCD panel must be ground while measuring the center area of
the panel. The LED driving condition is I_L=20mA of which each LED module is 3
LED serial.