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Note 3: See
“4.9.2 Definition of contrast ratio”.
Note 4: See
“4.9.3 Definition of luminance uniformity”.
Note 5: CIE 1931 Chromaticity Diagram Standard.
Note 6: Product surface temperature
˖
TopF = 33.0
ć
Note 7: See
“4.9.4 Definition of response times”.
Note 8: See
“4.9.5 Definition of viewing angles”.
4.9.2 Definition of contrast ratio
The contrast ratio is calculated by using the following formula.
Luminance of white screen
Contrast ratio
˄
CR
˅
=
Luminance of black screen
4.9.3 Definition of luminance uniformity
The luminance uniformity is calculated by using the following formula.
Maximum luminance from
ķ
to
Ŀ
Luminance uniformity
˄
LU
˅
=
Minimum luminance from
ķ
to
Ŀ
The luminance is measured at near the 9 points shown below.
4.9.4 Definition of response times
Response time is measured, the luminance changes from “white” to “black”, or “black” to “white” on 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.)
100%
90%
White
Luminance
Black
10%
0%
Ton Toff