NL10276AC30_09 NEC, NL10276AC30_09 Datasheet - Page 22

• Manufacturer Part Number: NL10276AC30_09
• Description: TFT COLOR LCD MODULE
• Manufacturer: NEC

4.10.2 Definition of contrast ratio
4.10.4 Definition of response times
4.10.5 Definition of viewing angles
4.10.3 Definition of luminance uniformity
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
Black
Left
White
Lower
Line
θD
100%
Normal axis (Perpendicular)
90%
10%
0%
θL
171
{ { { {
x x x x
θU
Luminance of white screen
Luminance of black screen
Column
512
Maximum luminance from
Minimum luminance from
Upper
z z z z
θR
Ton
12 o’clock
Right
853
y y y y
| | | |
640
384
128
x x x x to | | | |
x x x x to | | | |
Toff
DOD-M-0578
NEC Corporation
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