NL10276AC30-04W NEC, NL10276AC30-04W Datasheet - Page 22

• Manufacturer Part Number: NL10276AC30-04W
• Description: 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.
same screen point, by photo-detector. Ton is the time it takes the luminance change from 100% down to
10%. Also Toff is the time it takes the luminance change from 0% up to 90% (See the following
diagram.).
Response time is measured, the luminance changes from "white" to "black", or "black" to "white" on the
The luminance is measured at near the 5 points shown below.
Contrast ratio (CR) =
Luminance uniformity (LU) =
Luminance
Black
Left
White
640
384
Lower
128
Normal axis (Perpendicular)
θy-
100%
90%
10%
0%
171
θx-
•
•
x x x x
{ { { {
θy+
Luminance of white screen
Luminance of black screen
Ton
512
•
z z z z
Maximum luminance from
Minimum luminance from
Upper
θx+
12 o’clock
•
853
•
| | | |
y y y y
Right
x x x x to | | | |
x x x x to | | | |
Toff
DOD-M-0514
NEC Corporation
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