LM170E01
Liquid Crystal Display
Product Specification
4. Optical Specifications
Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 30 minutes
in a dark environment at 25 C. The values specified are measured at an approximate distance 50cm from
the LCD surface at a viewing angle of Φ and θ equal to 0 .
Figure. 9 presents additional information concerning the measurement equipment and method.
Optical Stage(x,y)
LCD Module
Field = 1
Pritchard PR880
or equivalent
50Cm
[Figure 9] Optical characteristic measurement equipment and method
Table 9. Optical characteristics
Parameter Symbol
Contrast ratio
(Ta=25 C, VCC=5.0V, fV=60Hz Dclk=54MHz, IBL=6.5mArms)
Values
Units
Notes
Min.
350
200
75
Typ.
600
250
-
Max.
CR
-
-
-
1
2
3
4
Surface luminance, white
Luminance uniformity
LWH
cd/m2
%
Response time
Rise time
Tr
Tr
8
2
6
18
6
ms
-
-
Decay time
TrRD
12
CIE color coordinates
Red
XR
YR
XG
YG
XB
YB
0.605
0.312
0.262
0.581
0.117
0.040
0.283
0.299
0.635
0.342
0.292
0.611
0.147
0.070
0.313
0.329
0.665
0.372
0.322
0.641
0.177
0.100
0.343
0.359
Green
Blue
White
XW
YW
Viewing angle (by CR ≥ 10)
X axis, right(φ=0 )
θr
θl
60
60
60
50
70
70
75
65
-
-
-
-
degree
degree
5
X axis, left (φ=180 )
Y axis, up (φ=90 )
θu
θd
Y axis, down (φ=270 )
Viewing angle (by CR ≥ 5)
X axis, right(φ=0 )
θr
θl
70
70
70
60
80
80
85
75
-
-
-
-
X axis, left (φ=180 )
Y axis, up (φ=90 )
θu
θd
Y axis, down (φ=270 )
Relative brightness
6
Luminance uniformity (TCO99)
-
-
1.7
Figure 10
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Ver 1.0
Mar. 28, 2005
LG [ LG SEMICON CO.,LTD. ]
