LC420WU1-SL01 LG, LC420WU1-SL01 Datasheet - Page 30

• Manufacturer Part Number: LC420WU1-SL01
• Description: WUXGA TFT LCD
• Manufacturer: LG

Appendix B
6. Current Status
It is not available to be specified black level and black uniformity on the spec at this moment. So LPL will get
more actual data for the future production(LC420WU1-SL01).
1. Black Level :
2. Black Uniformity
3. Sampling Size :
4. Measurement Method : Follow same rule as optical characteristics measurement.
5. Measurement location: refer to below.
7. Plan to review Black Level and Black Uniformity
1) light leakage & Stitch limit sample : # 177
2) Touch limit sample : #148
Below is actual data of production on
Surface Luminance of Black (L
The variation of surface luminance of black , δ
LPL will continue to monitor the black level and uniformity. Both LPL and Philips will review black level
as well as black uniformity together. This spec will be discussed sooner or later. ( end of Sept.)
Ver. 1.0
δ BLACK = Maximum(L
No.
regular RV event test quantity ( 5 pcs )
1
2
3
4
5
: Black Level and Black Uniformity
on1
②
④
,L
on2
BLACK
, L
Luminance
A
on3
) is the luminance value at center 1-point.
639
606
623
619
647
, L
RV (4 Jul 2005 ~ 5 Jul 2005
H
①
on4
, L
on5
July. 21, 2005
BLACK
) / Minimum(L
③
⑤
is defined as :
Black Level
on1
0.75
0.76
0.78
0.75
0.78
,L
on2
). This is only useful for reference.
A : H / 4 mm
B : V / 4 mm
H : 697.685 mm
V : 392.256 mm
@ H,V : Active Area
, L
on3
, L
on4
, L
on5
)
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