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參數(shù)資料
| 型號： | LM181E1-H2MN |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 18 SXGA TFT LCD |
| 中文描述： | 18 SXGA TFT液晶顯示器 |
| 文件頁數(shù)： | 13/24頁 |
| 文件大小： | 491K |
| 代理商： | LM181E1-H2MN |
LM181E1-H2MN
Liquid Crystal Display
Product Specification
Ver 0.3 J uly 5, 2000 Page 13/ 24
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
. The values specified are at an approximate distance 50cm from
the LCD surface at a viewing angle of
Φ
and
θ
equal to 0
°
.
Appendix A -1 presents additional information concerning the measurement equipment and method..
Table 8. OPTICAL CHARACTERISTICS
Values
Typ.
250
200
-
Parameter
Symbol
Min.
200
170
-
Max.
-
-
1.3
Units
cd/m
2
Notes
Contrast Ratio
Surface Luminance, white
Luminance Variation
Response Time
Rise Time
Decay Time
CIE Color Coordinates
Red
CR
L
WH
WHITE
Tr
Tr
R
Tr
D
1
2
3
4
-
-
20
30
50
50
msec
Green
Blue
White
x
R
y
R
x
G
y
G
x
B
y
B
x
W
y
W
0.554
0.295
0.272
0.516
0.126
0.113
0.283
0.299
0.584
0.325
0.302
0.546
0.156
0.143
0.313
0.329
0.614
0.355
0.332
0.576
0.186
0.173
0.343
0.359
Viewing Angle
x axis, right (
=0o)
x axis, left(
=180o)
y axis, up(
=90o)
y axis, down (
=270o)
x
x
y
y
+60
-60
+60
-60
+70
-70
+70
-70
-
-
-
-
Degree
5
Gamma Value(reference value)
2.1
6
Notes 1. Contrast Ratio (CR) is defined mathematically as :
Surface Luminance with all white pixels
Contrast Ratio =
Surface Luminance with all black pixels
2. Surface luminance is the center point across the LCD surface 50cm from the surface with all
pixels displaying white under the condition of I
BL
= 8.0 mArms. For more information see
Appendix A - 2.
3. The variation in surface Luminance,
WHITE
is determined by measuring L
ON
at each test position
1 through 5, and then dividing the maximum L
ON
of 5 points luminance by minimum L
ON
of 5
points luminance. For more information see Appendix A - 2.
WHITE
Maximum (L
ON1
, L
ON2
, ....L
ON5
)
÷
Minimum (L
ON1
, L
ON2
, ....L
ON5
)
4. Response time is the time required for the display to transition from black to white (Rise Time,
Tr
R
) and from white to black (Decay Time, Tr
D
). For additional information see Appendix A - 3.
Alpha Point Ltd.
P.O. Box 41
00751 Helsinki, Finland
http://www.
alpha.fi
Tel.: +
358-9-34 64 34 1
Fax: +
358-9-34 64 34 2
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