LC420W02
Liquid Crystal Display
Product Specification
4. Optical Specification
Optical characteristics are determined after the unit has been ‘ON’ and stable in a dark environment at
25±2°C. The values are specified at an approximate distance 50cm from the LCD surface at a viewing angle
of Φ and θ equal to 0 °.
It is presented additional information concerning the measurement equipment and method in FIG. 1.
LCD Module
Pritchard 880 or
equivalent
Optical Stage(x,y)
50cm
FIG. 1 Optical Characteristic Measurement Equipment and Method
Table 13. OPTICAL CHARACTERISTICS
Ta= 25±2°C, VLCD=12.0V, fV=60Hz, Dclk=72.4MHz, VBR=3.3V
Value
Typ
Parameter
Contrast Ratio
Symbol
Unit
Note
1
Min
600
Max
CR
CR with DCR
LWH
800
1200
400
1600
500
Surface Luminance, white
Luminance Variation
cd/m2
2
3
δ WHITE
TrR
5P
1.3
12
14
12
Rise Time
Decay Time
G to G
-
-
8
Response Time
(Gray to Gray)
TrD
10
8
ms
4
Rx
Ry
Gx
Gy
Bx
0.633
0.339
0.286
0.610
0.147
0.065
0.281
0.293
RED
GREEN
BLUE
Typ
Typ
Color Coordinates
[CIE1931]
-0.03
+0.03
By
Wx
Wy
WHITE
Viewing Angle (CR>10)
x axis, right(φ=0°)
θr
θl
85
85
85
85
89
89
89
89
-
-
-
-
x axis, left (φ=180°)
y axis, up (φ=90°)
degree
5
θu
θd
y axis, down (φ=270°)
Without DCR
With DCR
Gray Scale
Ver. 1.0
6
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Dec. 19, 2005
LG [ LG SEMICON CO.,LTD. ]
