BenQ Q7C3 Service Manual page 15

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%
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