LG.Philips LCD LC420WXN-SAA1 Specification
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LD420WXN
Product Specification
SPECIFICATION
FOR
APPROVAL
)
(
(
Preliminary Specification
)
Final Specification
Title 42.0” WXGA TFT LCD
BUYER
MODEL
APPROVED BY
/
/
SIGNATURE
DATE
SUPPLIER LG Display Co., Ltd.
*MODEL LD420WXN
SUFFIX SAA1
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
Y. S Park / S. Manager
REVIEWED BY
M. K Lee / Manager
SIGNATURE
DATE
PREPARED BY
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 0.0
J. H Kim / Engineer
TV Products Development Dept.
LG Display Co., Ltd
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LD420WXN
Product Specification
CONTENTS
Number ITEM
COVER
CONTENTS
RECORD OF REVISIONS 3
1 GENERAL DESCRIPTION
2 ABSOLUTE MAXIMUM RATINGS
3 ELECTRICAL SPECIFICATIONS
3-1 ELECTRICAL CHARACTERISTICS
3-2 INTERFACE CONNECTIONS
3-3 SIGNAL TIMING SPECIFICATIONS
3-4 SIGNAL TIMING WAVEFORMS
3-5 COLOR DATA REFERENCE
3-6 POWER SEQUENCE
4 OPTICAL SPECIFICATIONS
5 MECHANICAL CHARACTERISTICS
Page
1
2
4
5
6
6
8
10
11
12
13
15
20
6 RELIABILITY
7 INTERNATIONAL STANDARDS
7-1 SAFETY
7-2 EMC
8 PACKING
8-1 DESIGNATION OF LOT MARK
8-2 PACKING FORM
9 PRECAUTIONS 25
9-1 MOUNTING PRECAUTIONS 25
9-2 OPERATING PRECAUTIONS 25
9-3 ELECTROSTATIC DISCHARGE CONTROL 26
9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE 26
9-5 STORAGE 26
9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM 26
9-7 APPROPRIATE CONDITION FOR PUBLIC DISPLAY 26
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Revision No. Revision Date Page Description
0.0 Jan, 24, 2007 - Preliminary Specification(First Draft)
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LD420WXN
Product Specification
RECORD OF REVISIONS
Ver. 0.0
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1. General Description
The LC420WXN is a Color Active Matrix Liquid Crystal Display with an integral External Electrode Fluorescent
Lamp(EEFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive type display operating in the normally black mode. It has a 42.0 inch diagonally measured
active display area with WXGA resolution (768 vertical by 1366 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged 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,
thus presenting a palette of more than 16.7M(true) colors.
It has been designed to apply the 8-bit 1-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.
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LD420WXN
Product Specification
Mini-LVDS(RGB)
G1
Gate Driver Circuit
G768
Source Driver Circuit
S1 S1366
TFT - LCD Panel
(1366 Ý RGB Ý 768 pixels)
Back light Assembly
+12.0V
LVDS
Select #9
VBR_EXT
5pair
DCR
Enable
+24.0V, VBR-A,
V
BR
CN5
#10
(30pin)
#28
#27VBR_OUT
-B, On/off
EEPROM
(LUT)
SCL
SDRAM
LVDS Rx (Receiver)
DCR & ODC Controller
Timing Controller
Power Circuit
Block
SDA
Inverter (Master, 14Pin, High)
General Features
Active Screen Size 42.02 inches(1067.308mm) diagonal
Outline Dimension 983 mm(H) x 576 mm(V) x 51 mm(D) (Typ.)
Pixel Pitch 0.227mm x 0.681mm x RGB
Pixel Format 1366 horiz. by 768 vert. Pixels RGB stripe arrangement
Color Depth 8-bit, 16.7 M colors
Luminance, White 500 cd/m2(Center 1-point) (Typ.)
Viewing Angle (CR>10) Viewing Angle Free ( R/L 178 (Typ.), U/D 178 (Typ))
Power Consumption Total 165.4 W (Typ.) (Logic=5.40 W, Inverter=160W [VBR-A = 1.65V] )
Weight 10.5 Kg (Typ.)
Display Operating Mode Transmissive mode, Normally black
Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer (Haze 13%)
Possible Display Type Landscape and Portrait Enabled
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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
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LD420WXN
Product Specification
Parameter
Unit
Min Max
Value
Power Input
Voltage
Inverter Control
Voltage
Operating Temperature TOP 0 +50 ¶C
Storage Temperature TST -20 +60 ¶C
Operating Ambient Humidity HOP 10 90 %RH
Storage Humidity HST 10 90 %RH
LCD circuit
Inverter VBL -0.3 27.0 V [DC]
ON/OFF
Brightness VBR 0.0 +5.0 V [DC]
VLCD +8.0 +14.0 V [DC] GY\Gr YG¶j
VOFF / VON -0.3 +5.5 V [DC]
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.
90%
60
60%
RemarkSymbol
Note 1
Ver. 0.0
Wet Bulb
Temperature [
10
0
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [
¶C]
20
30
40
50
40%
Humidity [(%)RH]
10%
¶C]
Storage
Operation
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3. Electrical Specifications
3-1. Electrical Characteristics
It requires two power inputs. One is employed to power for the LCD circuit. The other input power for the
EEFL/Backlight is to power inverter.
Table 2. ELECTRICAL CHARACTERISTICS
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LD420WXN
Product Specification
Parameter Symbol
Unit Note
Min Typ Max
Value
Circuit :
Power Input Voltage VLCD 11.4 12.0 12.6 V [DC]
Power Input Current ILCD
Power Consumption PLCD 5.4 7.0 Watt 1
Rush current IRUSH - - 3.0 A 3
Note : 1. The specified current and power consumption are under the V
condition whereas mosaic pattern(8 x 6) is displayed and f
- 450 585 mA 1
- 500 650 mA 2
=12.0V, 25 r 2¶C, fV=60Hz
LCD
is the frame frequency.
V
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
Mosaic Pattern(8 x 6)
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Table 3. ELECTRICAL CHARACTERISTICS (Continue)
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LD420WXN
Product Specification
Parameter Symbol
Values
Min Typ Max
Inverter :
Power Supply Input Voltage
Power Supply Input Voltage Ripple - - 0.5
Power Supply
Input Current
Power Supply Input Current (In-Rush)
Power Consumption
Input Voltage for
Control System
Signals
Lamp:
Discharge Stabilization Time
Life Time 50,000 Hrs
After Aging
Before Aging
Brightness Adjust
On/Off
Brightness Adjust
On
Off
BL
V
IBL_A
IBL_B
Irush
PBL
V
BR-A 0.0 1.65 3.3 Vdc
V on
V off
VBR-B
Ts
22.8 24.0 25.2
-6.7
-7.2
-7.2
-7.7
--9.3A
- 160 172 W VBR-A = 1.65V … 1
2.5 - 5.0 Vdc
-0.3 0.0 0.8 Vdc
0 - 3.3 V
7.2
7.7
7.7
8.2
3min 3
Unit Notes
Vdc
Vp-p
AVBR-A = 1.65V … 1
AV
AVBR-A = 1.65V … 2
AV
V
VBR-B = 3.3V
VBR-A = 1.65V
1
1
BR-A = 3.30V … 1
BR-A = 3.30V … 2
BL = 22.8V
4
Notes :
1. Electrical characteristics are determined after the unit has been ‘ON’ and stable for approximately 30
minutes at 25·2¶C. The specified current and power consumption are under the typical supply Input voltage
24Vand V
BR (VBR-A : 1.65V & VBR-B :3.3V), it is total power consumption.
The ripple voltage of the power supply input voltage is under 0.5 Vp-p. LPL recommend Input Voltage is
24.0V · 5%.
2. Electrical characteristics are determined within 30 minutes at 25·2¶C.
The specified currents are under the typical supply Input voltage 24V.
. 3. The brightness of the lamp after lighted for 5minutes is defined as 100%.
T
is the time required for the brightness of the center of the lamp to be not less than 95% at typical current.
S
The screen of LCD module may be partially dark by the time the brightness of lamp is stable after turn on.
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 lamp current (V
BR-A : 1.65V & VBR-B :3.3V), on condition of continuous operating at 25 r 2¶C
5. LPL recommend that the PWM freq. is synchronized with Two times harmonic of Vsync signal of system.
6. The duration of rush current is about 20ms.
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3-2. Interface Connections
This LCD module employs two kinds of interface connection, a 30-pin connector is used for the module electronics and
14-pin connector is used for the integral backlight system.
3-2-1. LCD Module
- LCD Connector(CN5) : FI-X30SSL-HF (Manufactured by JAE) or Equivalent
- Mating Connector : FI-30C2L (Manufactured by JAE) or Equivalent
Table 4. MODULE CONNECTOR(CN5) PIN CONFIGURATION
Pin No. Symbol Description Note
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
27
28
29
30
VLCD
VLCD
VLCD
VLCD
GND Ground
GND Ground
GND Ground
GND Ground
Select Select LVDS Data format
kjyGl
GND Ground
RA- LVDS Receiver Signal(-)
RA+ LVDS Receiver Signal(+)
GND Ground
RB- LVDS Receiver Signal(-)
RB+ LVDS Receiver Signal(+)
GND Ground
RC- LVDS Receiver Signal(-)
RC+ LVDS Receiver Signal(+)
GND Ground
RCLK- LVDS Receiver Clock Signal(-)
RCLK+ LVDS Receiver Clock Signal(+)
GND Ground
RD- LVDS Receiver Signal(-)
RD+ LVDS Receiver Signal(+)
GND Ground
V
BR_OUT
V
BR_EXT
GND Ground
GND Ground
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Product Specification
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
kGjyGlGOG‘sG’ dGkGSG‘o’ dGlGP
}iyGGGsjkG
lG}iyGGGzGGsjkG
LD420WXN
1
2
3
Notes: 1. The pin no 9 is an option pin for DISM or LG format. ( VESA Format = “GND” / JEIDA Format =“VCC”)
Please refer to Appendix for further details.
2. The pin no 10 is an option pin for DCR Function ( Enable = “VCC” / Disable =“GND”)
3. The pin no 30 is LCD Test option.
LCM operates “AGP” (Auto Generation 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.
LPL recommends “NSB”. ( AGP : “VCC” or “OPEN” / NSB : “GND” )
4. All GND (ground) pins should be connected together, which should be also connected to the LCD
module’s metal frame.
5. All V
LCD (power input) pins should be connected together.
6. Input Levels of LVDS signals are based on the IEA 664 Standard.
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ଝ
3-2-2. Backlight Inverter
- Inverter Connector : S14B-PH-SMC (JST) or Equivalent
- Mating Connector : PHR-14 or Equivalent
Table 5. INVERTER CONNECTOR PIN CONFIGULATION
Pin No Symbol Description Note
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LD420WXN
Product Specification
1
2
3
4
5
6GND
7GND
8GND
9GND
10 GND
11
12 On/Off
13
14 Status
VBL
VBL
VBL
VBL
VBL
VBR-A
VBR-B
Power Supply +24.0V
Power Supply +24.0V
Power Supply +24.0V
Power Supply +24.0V
Power Supply +24.0V
Backlight Ground
Backlight Ground
Backlight Ground
Backlight Ground
Backlight Ground
Analog dimming voltage
DC 0.0V ~ 3.3V (Typ : 1.65V)
0.0V ~ 5.0V
Burst dimming voltage
DC 0.0V ~ 3.3V
Normal : Upper 3.0V
Abnormal : Under 0.7V
Notes : 1. GND should be connected to the LCD module’s metal frame.
2. If Pin #11 is open, V
BR-A = 1.65V. When apply over 1.65V( ~ 3.3V) continuously,
its luminance is increasing however lamp’s life time is decreasing.
It could be usable for boost up luminance when using DCR (=Dynamic contrast ratio) function only.
3. Minimum Brightness : V
BR-B =0V Maximum Brightness : VBR-B = 3.3V
4. Even though Pin #14 is open, there is no effect on inverter operating, The output terminal of inverter.
5. Each impedance of pin #11,12 and 13 is 300
[k˟], 80[k˟], 75[k˟]
1
2, 3
3
4
Pin Number of Inverter Connector
PCB
14
…
…
1
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3-3. Signal Timing Specifications
Table 6 and Table 7 show the signal timing required at the input of the LVDS transmitter. All of the interface
signal timings should be satisfied with the following specification for normal operation.
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LD420WXN
Product Specification
Table 6. TIMING TABLE for NTSC &PAL
[ DE (Data Enable) Only ]
ITEM Symbol Min Typ Max Unit Note
Period tCLK 12.5 13.8 15.8 ns
DCLK
Frequency - 63 72.4 80 MHz
Hsync
Period t
Horizontal Valid tHV 1366 1366 1366 tCLK
Horizontal Blank
Frequency fH 45 47.4 50
Width tWH -32-tCLK
Horizontal Back Porch tHBP 24 48 -
Horizontal Front Porch tHFP 40 80 -
Period t
Vertical Valid tVV 768 768 768 tHP
HT 1456 1528 1920 tCLK
-
VT 776 790 1063 tHP
tHP- tHV 162 tHP- tHV
KHz
Vertical Blank - tVP- tVV 22 tVP- tVV tHP
Vsync
Frequency fV 47 60 63 Hz
Width t
Vertical Back Porch tVBP 515-Hz
Vertical Front Porch t
WV -5-tHP
VFP 12-
t
HP
Note 1)
PAL : 47~53Hz
NTSC : 57~63Hz
Note : 1. The Input of HSYNC & VSYNC signal does not have an effect on normal operation(DE Only Mode).
If you use spread spectrum for EMI, add some additional clock to minimum value for clock margin.
2. The performance of the electro-optical characteristics may be influenced by variance of the vertical
refresh rate and the horizontal frequency.
3. Timing should be set based on clock frequency.
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