Q7C3 LCD Monitor Service Guide
4. Response time
TrR measures the transition time of L1 relative luminance from white to black state, from 90% to 10% (see graph below)
TrD measures the transition time of L1 relative luminance from black to white state, from 10% to 90% (see graph below)
WHITE
100%
90%
10%
0%
5. Cross talk shall be measured between two patterns.
l L
-L
l / L
A
A'
A
l L
-L
l / L
x 100%= 1.2% max., L
B
B'
B
LA:Luminance of measured point in A (cd/m2)
LB:Luminance of measured point in B (cd/m2)
LA':Luminance of measured point in A' (cd/m2)
LB':Luminance of measured point in B' (cd/m2)
(at Viewing Angle
6. Brightness Uniformity of these 9 points is defined as below:
TrR
1/2
1/6
FULL WHITE
A
B
184 gray level
x 100%= 1.2% max., L
and L
A
and L
A'
o
=
=
,
θ
0
φ
1
4
7
90%
BLACK
TrD
2/3
184 gray level
are brightness at location A and B
B
are brightness at location A' and B'
B'
o
)
0
2
5
8
50%
10%
Engineering Specification
WHITE
t
1/2
1/3
1/6
1/6
A'
1/3
1/2
B'
2/3
0 gray level
3
10%
6
50%
9
90%
15