NL160120BC27_02 NEC, NL160120BC27_02 Datasheet - Page 22

• Manufacturer Part Number: NL160120BC27_02
• Description: TFT COLOR LCD MODULE
• Manufacturer: NEC

4.11.2 Definition of contrast ratio
4.11.3 Definition of luminance uniformity
4.11.4 Definition of response times
4.11.5 Definition of viewing angles
The contrast ratio is calculated by using the following formula.
The luminance uniformity is calculated by using following formula.
the same screen point, by photo-detector. Ton is the time it takes the luminance change from 10% up
to 90%. Also Toff is the time it takes the luminance change from 90% down to 10% (See the
following diagram.).
Response time is measured, the luminance changes from "black" to "white", or "white" to "black" on
The luminance is measured at near the 5 points shown below.
Contrast ratio (CR) =
Luminance uniformity (LU) =
Luminance
Left
Black
White
Lower
600
1000
200
PRELIMINARY DATA SHEET DOD-M-1313 (1st edition)
100%
Normal axis (Perpendicular)
D
90%
10%
0%
L
267
U
Luminance of white screen
Luminance of black screen
800
Upper
R
Ton
Maximum luminance from
Minimum luminance from
12 o’clock
Right
1334
to
to
Toff
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