The LC420WU2 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive display type which is operating in the normally black mode. It has a 42.02 inch diagonally
measured active display area with WUXGA resolution (1080 vertical by 1920 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arrayed in vertical stripes.
Gray scale or the luminance of the sub-pixel color is determined with a 8-bit gray scale signal for each dot.
Therefore, it can present a palette of more than 16.7M(true) colors.
It has been designed to apply the 8-bit 2-port LVDS interface.
It is intended to support LCD TV, PCTV where high brightness, super wide viewing angle, high color gamut,
high color depth and fast response time are important.
Total 167.3 W (Typ.) (Logic=7.3 W, Inverter=160W [IBL=6.0 mA] ) Power Consumption
13.0K g (Typ.) Weight
Transmissive mode, Normally blackDisplay Mode
Hard coating(3H), Anti-glare treatment of the front polarizer (Haze 13%)Surface Treatment
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LC420WU2
Liquid Crystal Display
Product Specification
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
Value
ParameterRemark
Symbol
Unit
MaxMin
Power Input
Voltage
LCM
Backlight inverter
Brightness Control Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity
LCD
BL
Br
OP
ST
OP
ST
+14.0-0.3V
+28.0+21.6V
+5.25-0.3VON/OFFON/OFF Control Voltage
+5.00V
+500T
+50-20T
DC
V
DC
V
DC
V
DC
C
%RH9010H
%RH9010H
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.
at 25 ± 2 CV
C
Note 1
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LC420WU2
Liquid Crystal Display
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
It requires two power inputs. One is employed to power for the LCD circuit. The other Is used for the CCFL
backlight and inverter circuit.
Table 2. ELECTRICAL CHARACTERISTICS
Value
ParameterSymbol
Circuit :
Power Input Voltage
LCD
MaxTypMin
V
12.612.011.4V
DC
NoteUnit
I
Power Input Current
Power Consumption
Rush current
LCD
LCD
RUSH
Note : 1. The specified current and power consumption are under the V
condition whereas mosaic pattern(8 x 6) is displayed and fVis the frame frequency.
2. The current is specified at the maximum current pattern.
3. The duration of rush current is about 2ms and rising time of power input is 1ms (min.).
White : 255Gray
Black : 0Gray
=12.0V, 25 ± 2C, fV=60Hz
LCD
1mA793610-
2mA1066820-
1Watt9.57.3-P
3A3.0--I
Mosaic Pattern(8 x 6)
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Product Specification
Table 3. ELECTRICAL CHARACTERISTICS (Continued)
ParameterSymbol
Inverter :
IBLPower Supply Input Current
Input Voltage for
Control System
Signals
On/Off
Pulse Duty(PWM)
(Burst mode)
Lamp Current (ExtVbr-B = 100%)
Life Time
Audible Noise
OnVdc5.0-2.5V on
Off
I
O-MAX
I
O-TYP
I
O-MIN
2.5V
0.0
50,000Boost =1.65V
40,000Boost = 3.3V
Values
MaxTypMin
245
5.0-High Level
0.6-Low Level
24Peak Level
27Overall Level
LC420WU2
Liquid Crystal Display
NotesUnit
Vdc26.224.022.8VBLPower Supply Input Voltage
Vdc28Unloading Input Voltage
ExtVbr-B = 100%
A7.36.7-
A8.57.9-
A13--IrushPower Supply Input Current(In-Rush)
W175160-PBLPower Consumption
Vdc0.80.0-0.3V off
%10020EXTVbr-BBrightness Adj(Burst mode)
DC
V
DC
Boost = 1.65V
ExtVbr-B = 100%
Boost = 3.3V
VBL = 22.8V
EXTVbr-B=100%
Boost = 1.65V
Boost = TypV(rms)760610480VoutLamp Voltage (ExtVbr-B = 100%)
Boost = MaxmA(rms)7.57.06.5
Boost = TYPmA(rms)6.56.05.5
Boost = MinmA(rms)5.55.04.5
Appendix DdB (A)
1
1Vp-p0.2-0.2Power Supply Input Voltage Ripple
1
1
5
1
2Vdc3.3-0.0VBRBrightness Adjust
3Hz145NTSC/PALPWM Frequency for NTSC & PAL
4Hrs
Notes :
1. Electrical characteristics are determined after the unit has been ‘ON’ and stable for approximately 120
minutes at 252C. The specified current and power consumption are under the typical supply Input voltage
24V and Vbr 1.65V, it is total power consumption.
The ripple voltage of the power supply input voltage is under 0.4 Vp-p. LPL recommend Input Voltage is
24.0V 5%.
2.
Brightness Control. This VBRVoltage control brightness.
FunctionVBR Voltage
Maximum Brightness (110%)3.3V
Minimum Brightness (90%)0V
3.
LPL recommend that the PWM freq. is
synchronized with the treble harmonic of Vsync signal of system.
4. Specified Values are for a single lamp which is aligned horizontally.
The life Time is determined as the time which luminance of the lamp is 50% compared to that of initial value
at the typical/ maximum lamp current ( Boost = 1.65V / 3.3V) on condition of continuous operating at 25 ± 2C
5. The duration of rush current is about 10ms.
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LC420WU2
Liquid Crystal Display
Product Specification
3-2. Interface Connections
This LCD module employs two kinds of interface connection, a 51-pin connector is used for the module
electronics and two 12-pin connectors are used for the integral backlight system.
3-2-1. LCD Module
- LCD Connector(CN1): FI-R51S-HF(manufactured by JAE) or KN25-51P-0.5SH(manufactured by Hirose)
- Mating Connector : FI-R51HL(JAE) or compatible
Table 4. MODULE CONNECTOR(CN1) PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Reserved(NC)
Reserved (NC)
Reserved (NC)
Reserved (NC)
Reserved (NC)
Reserved (NC)
Reserved (NC)
Reserved (NC)
Reserved (NC)
Reserved (NC)
GND
RO0N
RO0P
RO1N
RO1P
RO2N
RO2N
GND
ROCLKN
ROCLKP
GND
RO3N
RO3P
Reserved (NC)
Reserved (NC)
GND
DescriptionSymbolNo
No connection
No connection(Reserved for I2C)
No connection(Reserved for I2C)
No connection
No connection
No connection
No connection
No connection
No connection
No connection
Ground
FIRST CHANNEL 0-
FIRST CHANNEL 0+
FIRST CHANNEL 1-
FIRST CHANNEL 1+
FIRST CHANNEL 2-
FIRST CHANNEL 2+
Ground
FIRST CLOCK CHANNEL C-
FIRST CLOCK CHANNEL C+
Ground
FIRST CHANNEL 3-
FIRST CHANNEL 3+
No connection(Res for 10Bits)
No connection(Res for 10Bits)
GND
No
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
-
Symbol
GND
RE0N
RE0P
RE1N
RE1P
RE2N
RE2P
GND
RECLKN
RECLKP
GND
RE3N
RE3P
Reserved (NC)
Reserved (NC)
GND
GND
GND
GND
GND
NC
V
LCD
V
LCD
V
LCD
V
LCD
-
SECOND CHANNEL 0-
SECOND CHANNEL 0+
SECOND CHANNEL 1-
SECOND CHANNEL 1+
SECOND CHANNEL 2-
SECOND CHANNEL 2+
Ground
SECOND CLOCK CHANNEL C-
SECOND CLOCK CHANNEL C+
Ground
SECOND CHANNEL 3-
SECOND CHANNEL 3+
No connection(Res for 10Bits)
No connection(Res for 10Bits)
Ground
Ground
Ground
NC
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
Note :
1. The pin no 44 is LCD Test option.
“AGP” (Auto Generation LCM operates Pattern) or “NSB” (No Signal Black) is case that LVDS signals
are out of frequency or abnormal condition in spite of 12 volt power supply.