Akai LCT-4216 Service Manual page 73

42” lcd-tv
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4. Optical Specification
Optical characteristics are determined after the unit has been 'ON' and stable for approximately 30Min in a
dark environment at 25±2°C. The values specified are 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.
Optical Stage(x,y)
FIG.1 Optical Characteristic Measurement Equipment and Method
Table 12. OPTICAL CHARACTERISTICS
Parameter
Contrast Ratio
Surface Luminance, white
Luminance Variation
Response Time
(Gray-to-Gray)
Color Coordinates
[CIE1931]
Viewing Angle (CR>10)
x axis, right(φ=0°)
x axis, left (φ=180°)
y axis, up (φ=90°)
y axis, down (φ=270°)
Gray Scale
Ver. 1.1
Product Specification
LCD Module
Symbol
CR
CR with AI
L
WH
δ
WHITE
Rise Time
Tr
R
Decay Time
Tr
D
RED
Rx
Ry
GREEN
Gx
Gy
BLUE
Bx
By
WHITE
Wx
Wy
θr
θl
θu
θd
Without AI
With AI
50cm
Ta= 25
±2°C
Value
Min
Typ
300
400
700
1,000
400
500
5P
-
10
-
10
0.639
0.342
0.282
0.610
Typ
-0.03
0.147
0.073
0.281
0.293
85
88
85
88
85
88
85
88
August.12, 2004
Liquid Crystal Display
Pritchard 880 or
equivalent
, V
=12.0V, f
=60Hz, Dclk=72MHz, V
V
LCD
Max
1.3
16
16
Typ
+0.03
-
-
-
-
LC420W02
=3.3V
BR
Unit
Note
1
2
cd/m
2
3
ms
4
ms
degree
5
6
1

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