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PDF LC420WUH-SCM1 Data sheet ( Hoja de datos )
| Número de pieza | LC420WUH-SCM1 | |
| Descripción | WUXGA TFT LCD | |
| Fabricantes | LG | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LC420WUH-SCM1 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Product Specification
SPECIFICATION
FOR
APPROVAL
LC420WUH
( ) Preliminary Specification
( ● ) Final Specification
Title
BUYER
MODEL
General
42.0” WUXGA TFT LCD
SUPPLIER
LG Display Co., Ltd.
*MODEL
LC420WUH
SUFFIX
SCM1
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
/
SIGNATURE
DATE
APPROVED BY
P. Y KIM / Team Leader
SIGNATURE
DATE
REVIEWED BY
/ S. J LEE / Project Leader
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver.1.2
PREPARED BY
S. M Lee / Engineer
TV Products Development Dept.
LG Display LCD Co., Ltd
1 /41
1 page  
Product Specification
LC420WUH
2. Absolute Maximum Ratings
The following items are maximum values which, if exceeded, may cause faulty operation or damage to the
LCD module.
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Value
Min Max
Unit Note
Logic Power Voltage
VCC
-0.5
+4.0
VDC
Gate High Voltage
VGH
+18.0
+30.0
VDC
Gate Low Voltage
VGL
-8.0
-4.0
VDC
Source D-IC Analog Voltage
Gamma Ref. Voltage (Upper)
VDD
VGMH
-0.3
½VDD-0.5
+18.0
VDD+0.5
VDC
VDC
1
Gamma Ref. Voltage (Low)
BL Operating Input Voltage
(One Side)
Panel Front Temperature
Operating Temperature
Storage Temperature
Operating Ambient Humidity
VGML -0.3 ½ VDD+0.5 VDC
VBL 600
1150
VRMS
TSUR
TOP
TST
HOP
-
0
-20
10
+68 °C
+50 °C
+60 °C
90 %RH
4
2,3
Storage Humidity
HST 10
90 %RH
Note: 1. Ambient temperature condition (Ta = 25 ± 2 °C )
2. Temperature and relative humidity range are shown in the figure below. Wet bulb temperature
should be Max 39 °C and no condensation of water.
3. Gravity mura can be guaranteed below 40℃ condition.
4. The maximum operating temperature is based on the test condition that the surface temperature
of display area is less than or equal to 68 ℃ with LCD module alone in a temperature controlled
chamber. Thermal management should be considered in final product design to prevent the surface
temperature of display area from being over 68 ℃. The range of operating temperature may
degrade in case of improper thermal management in final product design.
90%
60
60%
Wet Bulb
Temperature [°C]
50
40
30
20
10
0
40%
10%
Storage
Operation
Ver.1.2
-20 0 10 20 30 40 50 60 70 80
Dry Bulb Temperature [°C]
5 /41
5 Page 
Product Specification
9. The reference method of burst dimming duty ratio.
SCAN_Block1 or
SCAN_Block2
T
A
LC420WUH
+3.3V TTL
Output of Inverter to Lamp
90%
Point A
SCAN Block1 or SCAN Block2 PWM duty ={ A/T } * 100
Point A : rising time 90% of Iout point .
Point B : falling starting point .
I out duty = { a/T } * 100
SCAN Block1 or SCAN Block2 Frequency = 1/T
a
Point B
I-out
※ We recommend not to be much different between SCAN BLK 1 or SCAN BLK2 duty and Iout duty .
※ Dimming current output rising and falling time may produce humming and inverter trans’ sound noise.
※ Burst dimming duty should be 100% for more than 1second after turn on.
※ Equipment
Oscilloscope :TDS3054B(Tektronix)
Current Probe : P6022 AC (Tektronix)
High Voltage Probe: P5100(Tektronix)
10. The Cable between the backlight connector and its inverter power supply should be connected directly
with a minimized length. The longer cable between the backlight and the inverter may cause the lower
luminance of lamp and may require more higher starting voltage ( Vs ).
11. The operating current must be measured as near as backlight assembly input.
12. The operating current unbalance between left and right side for each scanning block must be under 10%
of Typical current.
│Left(Master) current – Right(Slave) Current│ 〈 10% of typical current
Ver.1.2
11 /41
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LC420WUH-SCM1.PDF ] | |
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