nl10276bc24_13 NEC, nl10276bc24_13 Datasheet - Page 24

• Manufacturer Part Number: nl10276bc24_13
• Description: TFT COLOR LCD MODULE
• Manufacturer: NEC

4.10.2 Definition of contrast ratio
4.10.3 Definition of luminance uniformity
4.10.4 Definition of response times
4.10.5 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 90%
down to 10%. Also Toff is the time it takes the luminance change from 10% up to 90% (See the
following diagram.).
Response time is measured, the luminance changes from "white" to "black", or "black" to "white" on
The luminance is measured at near the 5 points shown below.
Contrast ratio (CR) =
Luminance uniformity (LU) =
Luminance
Left
Lower
Black
White
Normal axis (Perpendicular)
D
640
384
L
128
100%
90%
10%
DATA SHEET DOD-PD-0331 (2nd edition)
0%
U
171
Luminance of white screen
Luminance of black screen
Upper
R
Maximum luminance from
Minimum luminance from
12 o’clock
Ton
512
Right
853
to
to
Toff
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