LM270WF1 LG, LM270WF1 Datasheet - Page 21

• Manufacturer Part Number: LM270WF1
• Description: LCD Module
• Manufacturer: LG

PDF created with pdfFactory Pro trial version
www.DataSheet4U.com
Measuring point for surface luminance & measuring point for luminance variation
Notes 1. Contrast Ratio(CR) is defined mathematically as :
Ver 0.0
2. Surface luminance is luminance value at No.1 point across the LCD surface 50cm
3. The variation in surface luminance , WHITE is defined as :
Contrast Ratio =
from the surface with all pixels displaying white. For more information see FIG 6.
V
WHITE
A : H/4 mm
B : V/4 mm
@ H,V : Active Area
B
V/10
[ FIGURE 7 ] Measure Point for Luminance
Minimum(L
Maximum
Surface Luminance with all white pixels
Surface Luminance with all black pixels
2
5
7
www.speclcd.com
www.speclcd.com
(L
Product Specification
on1
on1
www.pdffactory.com
L ,
A
,
July. 2. 2008
L
on2
on2
,
H
,
....
..
1
3
8
L
L
on9
on9
)
)
100
Active Area
(%)
4
6
9
H/10
Liquid Crystal Display
LM270WF1
21 / 31