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PDF LC420WXE-SAA1 Data sheet ( Hoja de datos )
| Número de pieza | LC420WXE-SAA1 | |
| Descripción | WXGA TFT LCD | |
| Fabricantes | LG | |
| Logotipo |  |
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Product Specification
SPECIFICATION
FOR
APPROVAL
LC420WXE
Liquid Crystal Display
( ) Preliminary Specification
●( ) Final Specification
Title
BUYER
MODEL
General
42.0” WXGA TFT LCD
SUPPLIER
LG.Philips LCD Co., Ltd.
*MODEL
LC420WXE
SUFFIX
SAA1 (RoHS Verified)
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
/
SIGNATURE
DATE
APPROVED BY
SIGNATURE
DATE
J.H. Yoon / Senior Manager
REVIEWED BY
/ B. Y Park / Manger
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0
PREPARED BY
Y. H Choi / Engineer
TV Products Development Dept.
LG. Philips LCD Co., Ltd
1 / 35
1 page  
Product Specification
LC420WXE
Liquid Crystal Display
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
Power Input
Voltage
LCD circuit
VLCD
Value
Min Max
+8.0 +14.0
Unit
V [DC]
Remark
at 25 ± 2 °C
B/L Input voltage
Operating
Voltage (one
side)
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity
VOP
TOP
TST
HOP
HST
700
0
-20
10
10
1100
+50
+60
90
90
V[ RMS]
°C
°C
%RH
%RH
at 25 ± 2 °C
Burst Dimming Duty
100%
Note 1
Note 1. Temperature and relative humidity range are shown in the figure below.
Wet bulb temperature should be 39 °C Max, and no condensation of water.
2. Gravity mura can be guaranteed under 40 °C condition.
90%
60
Wet Bulb
Temperature [°C]
50
40
30
20
10
0
60%
40%
10%
-20 0 10 20 30 40 50 60 70 80
Dry Bulb Temperature [°C]
Storage
Operation
Ver. 1.0
5 / 35
5 Page 
Product Specification
LC420WXE
Liquid Crystal Display
3-2-2. Backlight Module
[ Master ]
[ Slave ]
1) Balance Connector
1) Balance Connector
: 65002WS-03 (manufactured by YEONHO)or equivalent : 65002WS-03 (manufactured by YEONHO)or equivalent
2) Mating Connector
2) Mating Connector
: 65002HS-03 (manufactured by YEONHO) or equivalent. : 65002HS-03 (manufactured by YEONHO) or equivalent.
Table 5. BACKLIGHT CONNECTOR PIN CONFIGURATION(CN2,CN3)
No Symbol
Master
Slave
1 H_Input
High_Input
High_Input
2 H_Input
High_Input
High_Input
3 FB
NC
NC
◆ Rear view of LCM
Note
3 21
12
3
Master
Slave
3-2-3. Sync connection between LCD Module and System
There are 4 pins sync connector in the LCD module control PCB . The No.1 pin is for REFMODE which is
selected of Vsync frequency signal. The No.2 pin is for WPWM which s generated for PWM frequency
synchronically between control & inverter. The rest pins are for Ground and NC.
1) Inverter Sync Connector
: DF14-4S-1.25C (manufactured by Hirose)or equivalent
Table 6. INVERTER SYNC. CONNECTOR PIN CONFIGURATION(CN4)
Pin No.
Symbol
Description
Note
1
REFMODE
Vsync. Frequency select signal
2
WPWM
PWM Frequency output
3
GND
Ground
4 NC No connection
LCD Module Control PCB
14
[ Note ]
1. LPL recommends that Inverter Burst dimming frequency (PWM Frequency) should be synchronized
with Sync signal.
2. LPL recommends that Inverter Burst dimming frequency (PWM Frequency) should be 100Hz or 120Hz
in terms of waterfall noise.
Ver. 1.0
11 / 35
11 Page | ||
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