Read LG 22LH20D (CHASSIS:LB91A) Service Manual online
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1) Optical characteristics are determined after the unit has been ‘ON’ and stable in a dark environment at 25±2°C
2) Surface luminance is the luminance value at center 1-point across the LCD surface 50cm from the surface with all pixels displaying
2) Surface luminance is the luminance value at center 1-point across the LCD surface 50cm from the surface with all pixels displaying
white.
No
Item
Min.
Typ.
Max.
Remark
1
Viewing Angle
R/L/U/D
170/170/155/155
CR >10
2
Luminance
Luminance
280
350
Variation
1.3
PSM: Vivid, CSM: Cool, White: 100IRE
3
Contrast Ratio
CR
700
1000
AllWhite, All Black
4
Color coordinate
WHITE
X
0.285
Y
0.293
RED
X
Typ.
0.642
Typ.
PSM: Vivid, CSM: Cool, White: 85 IRE
Y
+0.03
0.333
+0.03
GREEN
X
0.295
Y
0.608
BLUE
X
0.147
Y
0.063
P1
P2
P3
P4
P5
1W/4
2W/4
3W/4
1H/4
2H/4
3H/4
: Measurement position (5 point)
5. Chroma & Brightness
5.1 Module optical specifications
*** LGD module Uniformity Measurement Position ***
5.2 Chroma (PSM:Vivid, Color Temperature:Cool)
- except “RGB PC Mode PSM: Standard, Color Temperature: Medium”
** The W/B Tolerance is ±0.002 for Adjustment, but for DQA ±0.015
** The W/B Tolerance is ±0.002 for Adjustment, but for DQA ±0.015
No Item
Min
Typ
Max
Remark
1.
Cool
White Balance, X axis
0.283
0.285
0.287
DQA : ±0.015
White Balance, Y axis
0.291
0.293
0.295
DQA : ±0.015
2.
Medium
White Balance, X axis
0.293
0.295
0.297
DQA : ±0.015
White Balance, Y axis
0.303
0.305
0.307
DQA : ±0.015
3.
Warm
White Balance, X axis
0.311
0.313
0.315
DQA : ±0.015
White Balance, Y axis
0.327
0.329
0.331
DQA : ±0.015
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