LG Display LC420WUN-SCA1 Specification
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LC420WUN
Product Specification
SPECIFICATION
FOR
APPROVAL
)
(
(
Preliminary Specification
)
Final Specification
Title 42.0” WUXGA TFT LCD
BUYER General
MODEL
APPROVED BY
/
/
SIGNATURE
DATE
SUPPLIER LG Display Co., Ltd.
*MODEL LC420WUN
SUFFIX SCA1(RoHS Verified)
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
P. Y. KIM / Team Leader
REVIEWED BY
S. J LEE / Project Leader
SIGNATURE
DATE
PREPARED BY
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0
S. M Lee / Engineer
TV Products Development Dept.
LG Display LCD Co., Ltd
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LC420WUN
Product Specification
CONTENTS
Number ITEM
COVER 1
CONTENTS
RECORD OF REVISIONS
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 LVDS SIGNAL SPECIFICATIONS
3-5 COLOR DATA REFERENCE
3-6 POWER SEQUENCE
4 OPTICAL SPECIFICATIONS
5 MECHANICAL CHARACTERISTICS
Page
2
3
4
5
6
6
8
10
11
14
15
17
21
6 RELIABILITY
7 INTERNATIONAL STANDARDS
7-1 SAFETY
7-2 EMC
7-3 Environment
8 PACKING
8-1 INFORMATION OF LCM LABEL
8-2 PACKING FORM
9 PRECAUTIONS
9-1 MOUNTING PRECAUTIONS
9-2 OPERATING PRECAUTIONS
9-3 ELECTROSTATIC DISCHARGE CONTROL
9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE
9-5 STORAGE
9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM
24
25
25
25
25
26
26
26
27
27
27
28
28
28
28
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Revision No. Revision Date Page Description
0.0 Nov .23. .2009 - Preliminary Specification (First Draft)
0.1 Dec. 27. 2009 15 Add T8 Spec in Power Sequence
1.0 Feb. 23. 2010 - Final Specification
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LC420WUN
Product Specification
RECORD OF REVISIONS
16 Change Inverter Power Sequence
36,37 Define T-con Option Circuit
8 Change User Connector Config. ( Pin # 1)
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Product Specification
1. General Description
The LC420WUN 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 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 10-bit gray scale signal for each dot.
Therefore, it can present a palette of more than 1.06Bilion (true) colors.
It has been designed to apply the 10-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.
LC420WUN
Mini-LVDS(RGB)
Control
Signals
Power Signals
3PinX1CN(High)
3PinX1CN(High)
Source Driver Circuit
S1 S1920
G1
TFT - LCD Panel
(1920 Ý RGB Ý 1080 pixels)
G1080
OPC Enable
ExtVBR-B
VBR-B out
LVDS
2Port
LVDS
Select
Bit
Select
+12.0V
CN1
(51pin)
+24.0V, GND
LVDS 1,2
Option
signal
I2C
EXTVBR-B
Status
EEPROM
SCL
Timing Controller
LVDS Rx + OPC + DGA + ODC
Power Circuit
SDA
Integrated
Block
Inverter
General Features
Active Screen Size 42.02 inches(1067.31mm) diagonal
Outline Dimension 983.0(H) x 576.0 (V) x 51.0 mm(D) (Typ.)
Pixel Pitch 0.4845 mm x 0.4845 mm
Pixel Format 1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement
Color Depth 10bit(D) , 1.06Billon colors
Luminance, White 500 cd/m2(Center 1point ,Typ.)
[Gate In Panel]
Back light Assembly
Viewing Angle (CR>10) Viewing angle free ( R/L 178 (Min.), U/D 178 (Min.))
Power Consumption Total 156.8W (TYP.) (Logic=7.8W, Inverter=149W )
Weight 9.1 Kg (Typ)
Display Mode Transmissive mode, Normally black
Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer (Haze 10%)
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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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LC420WUN
Product Specification
Parameter Symbol
Power Input Voltage
Inverter Control Voltage
T-Con Option Selection Voltage VLOGIC -0.3 +4.0 VDC
Operating Temperature TOP 0 +50 ¶C
Storage Temperature TST -20 +60 ¶C
Panel Front Temperature TSUR - +68 ¶C 4
Operating Ambient Humidity HOP 10 90 %RH
Storage Humidity HST 10 90 %RH
Note
1. Ambient temperature condition (Ta =
LCD Circuit VLCD -0.3 +14.0 VDC
Inverter VBL -0.3 + 27.0 VDC
ON/OFF VOFF / VON -0.3 +5.5 VDC
Brightness VBR 0.0 +5.0 VDC
25 r 2 ¶C )
Value
Unit Note
Min Max
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¶C condition.
4. The maximum operating temperatures is based on the test condition that the surface temperature
of display area is less than or equal to 68¶C 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 degraded in case of
improper thermal management in final product design.
90%
1
2,3
2,3
60
60%
Ver. 1.0
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 Is used for the EEFL
backlight and inverter circuit.
Table 2. ELECTRICAL CHARACTERISTICS
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LC420WUN
Product Specification
Parameter Symbol
Min Typ Max
Circuit :
Power Input Voltage VLCD 10.8 12.0 13.2 VDC
Power Input Current (TBD) ILCD
Power Consumption PLCD 7.8 9.2 Watt 1
Rush current IRUSH - - 5.0 A 3
Note
1. The specified current and power consumption are under the V
455 650 845 mA 1
668 955 1240 mA 2
condition whereas mosaic pattern(8 x 6) is displayed and f
Value
=12.0V, Ta=25 r 2¶C, fV=60Hz
LCD
is the frame frequency.
V
Unit Note
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 0.5ms (min.).
White : 1023 Gray
Black : 0 Gray
Mosaic Pattern(8 x 6)
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Product Specification
Table 3. ELECTRICAL CHARACTERISTICS (Continue)
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LC420WUN
Parameter Symbol
Inverter :
Power Supply Input Voltage V
Power Supply
Input Current
Power Supply Input Current (In-Rush) IRUSH --11A
Power Consumption (TBD) P
Input Voltage for
Control System
Signals
Lamp:
After Aging I
Before Aging I
On/Off
Brightness Adjust EXTVBR-B 30 - 100 %
PWM Frequency for
NTSC & PAL
Pulse Duty
Level (PWM)
(Burst mode)
On V
Off V
BL 22.8 24.0 25.2 VDC 1
BL_A -6.2
BL_B -6.7
BL -
ON 2.5 - 5.0 VDC
OFF -0.3 0.0 0.8 VDC
PAL 100 Hz 5
NTSC 120 Hz 5
High Level 2.5 - 5.0 V
Low Level 0.0 - 0.8 V
Min Typ Max
Values
149 164
6.8
7.3
Unit Note
A1
A2
V
EXTV
W1
DC
High: Lamp on
Low : Lamp off
DC
BL = 22.8V
BR-B = 100%
6
On Duty
7
Discharge Stabilization Time Ts
Life Time 50,000 60,000 Hrs 4
Note
1. Electrical characteristics are determined after the unit has been ‘ON’ and stable for approximately 120
3min 3
minutes at 25·2¶C. The specified current and power consumption are under the typical supply Input voltage
24Vand V
BR (EXTVBR-B : 100%), it is total power consumption.
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%.
TS is the time required for the brightness of the center of the lamp to be not less than 95% at typical current.
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 (
EXTVBR-B :100%), on condition of continuous operating at 25· 2¶C
5. LGD recommend that the PWM freq. is synchronized with Two times harmonic of Vsync signal of system.
6. The duration of rush current is about 10ms.
EXTVBR-B is based on input PWM duty of the inverter.
7.
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3-2. Interface Connections
This LCD module employs two kinds of interface connection, 51-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 : FI-R51S-HF(manufactured by JAE) or KN25-51P-0.5SH(manufactured by Hirose)
(CN1) Refer to below table
- Mating Connector : FI-R51HL(JAE) or compatible
Table 4. MODULE CONNECTOR(CN1) PIN CONFIGURATION
No Symbol Description No Symbol Description
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
NC No Connection
NC No Connection
NC No Connection
NC No Connection (Reserved for LGD)
NC No Connection (Reserved for LGD)
NC No Connection (Reserved for LGD)
LVDS Select
BR-B External VBR (From System)
EXTV
VBR-B out OPC output (From LCM)
OPC Enable ‘H’ = Enable , ‘L’ or NC = Disable
GND
R1AN
R1AP
R1BN
R1BP
R1CN
R1CP
GND
R1CLKN
R1CLKP
GND
R1DN
R1DP
R1EN
R1EP
NC
‘H’ =JEIDA , ‘L’ or NC = VESA
Ground
FIRST LVDS Receiver Signal (A-)
FIRST LVDS Receiver Signal (A+)
FIRST LVDS Receiver Signal (B-)
FIRST LVDS Receiver Signal (B+)
FIRST LVDS Receiver Signal (C-)
FIRST LVDS Receiver Signal (C+)
Ground
FIRST LVDS Receiver Clock Signal(-)
FIRST LVDS Receiver Clock Signal(+)
Ground
FIRST LVDS Receiver Signal (D-)
FIRST LVDS Receiver Signal (D+)
FIRST LVDS Receiver Signal (E-)
FIRST LVDS Receiver Signal (E+)
No Connection
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Product Specification
27
Bit Select
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
R2CLKN
R2CLKP
-- -
‘H’ or NC= 10bit(D) , ‘L’ = 8bit
R2AN
R2AP
R2BN
R2BP
R2CN
R2CP
GND
GND
R2DN
R2DP
R2EN
R2EP
NC
NC
GND Ground
GND Ground
GND Ground
NC No connection
VLCD Power Supply +12.0V
VLCD Power Supply +12.0V
VLCD Power Supply +12.0V
VLCD Power Supply +12.0V
SECOND LVDS Receiver Signal (A-)
SECOND LVDS Receiver Signal (A+)
SECOND LVDS Receiver Signal (B-)
SECOND LVDS Receiver Signal (B+)
SECOND LVDS Receiver Signal (C-)
SECOND LVDS Receiver Signal (C+)
Ground
SECOND LVDS Receiver Clock Signal(-)
SECOND LVDS Receiver Clock Signal(+)
Ground
SECOND LVDS Receiver Signal (D-)
SECOND LVDS Receiver Signal (D+)
SECOND LVDS Receiver Signal (E-)
SECOND LVDS Receiver Signal (E+)
No Connection
No Connection
LC420WUN
Note
1. All GND(ground) pins should be connected together to the LCD module’s metal frame.
2. All V
LCD (power input) pins should be connected together.
3. All Input levels of LVDS signals are based on the EIA 644 Standard.
4. Specific pins(pin No. #2~#6) are used for internal data process of the LCD module.
These pins should be no connection.
5. Specific pins(pin No. # 8~#10) are used for OPC function of the LCD module.
If not used, these pins are no connection. (Please see the Appendix III-4 for more information.)
6. LVDS pin (pin No. #24,25,40,41) are used for 10Bit(D) of the LCD module.
If used for 8Bit(R), these pins are no connection.
7. Specific pin No. #44 is used for “No signal detection” of system signal interface.
It should be GND for NSB(No Signal Black) during the system interface signal is not.
If this pin is “H”, LCD Module displays AGP(Auto Generation Pattern).
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• •
• •
3-2-2. Backlight Module
[ Master ]
-Inverter Connector : 20022WR-14B1(Yeonho)
or Equivalent
- Mating Connector : 20022HS-14 or Equivalent
Table 5. INVERTER CONNECTOR PIN CONFIGULATION
Pin No Symbol Description Master Note
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LC420WUN
Product Specification
Note
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VBL Power Supply +24.0V VBL
VBL Power Supply +24.0V VBL
VBL Power Supply +24.0V VBL
VBL Power Supply +24.0V VBL
VBL Power Supply +24.0V VBL
GND Backlight Ground GND
GND Backlight Ground GND
GND Backlight Ground GND
GND Backlight Ground GND
GND Backlight Ground GND
NC
ON/OFF
V
EXTVBR-B
Status
No Connection
Backlight ON/OFF control
External PWM
Lamp Status
EXTV
NC
ON/OFF
V
BR-B 3
Status 2
1. GND should be connected to the LCD module’s metal frame.
2. Normal : Low (under 0.7V) / Abnormal : High (upper 3.0V)
Please see Appendix IV-1 for more information.
3. The impedance of pin #12 is over 50[K˟] & the impedance of Pin #13 is over 100[K˟].
1
3
Rear view of LCM
Rear view of LCM
14
…
PCB
…
PCB
1
…
…
1
<Master>
Ver. 1.0
12
<Slave>
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3-3. Signal Timing Specifications
Table 6 shows 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.
Table 6-1. TIMING TABLE for NTSC (DE Only Mode)
ITEM Symbol Min Typ Max Unit Note
Display Period tHV - 960 - tclk
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LC420WUN
Product Specification
Blank t
Total t
Display Period t
HB 100 140 240 tclkHorizontal
HP 1060 1100 1200 tclk 2200/2
VV - 1080 - tHP
Blank tVB 11 45 69 tHPVertical
Frequency
Total t
DCLK f
Horizontal f
Vertical f
VP 1091 1125 1149 tHP
CLK 70 74.25 77 MHz 148.5/2
H 65 67.5 70 KHz
V 57 60 63 Hz
Table 6-2. TIMING TABLE for PAL (DE Only Mode)
ITEM Symbol Min Typ Max Unit Note
HV - 960 - tclk
HB 100 140 240 tclk
HP 1060 1100 1200 tclk 2200/2
Horizontal
Display Period t
Blank t
Total t
VV - 1080 - tHP
Vertical
Display Period t
Blank tVB 228 270 300 tHP
Total tVP 1308 1350 1380 tHP
CLK 70 74.25 77 MHz 148.5/2
H 65 67.5 70 KHz
V 47 50 53 Hz
Frequency
Note
DCLK f
Horizontal f
Vertical f
The Input of HSYNC & VSYNC signal does not have an effect on normal operation(DE Only Mode).
The performance of the electro-optical characteristics may be influenced by variance of the vertical
refresh rate.
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3-4. LVDS Signal Specification
3-4-1. LVDS Input Signal Timing Diagram
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LC420WUN
Product Specification
DE, Data
DCLK
First data
Second data
0.7VDD
0.3VDD
tCLK
DE(Data Enable)
0.5 VDD
Invalid data
Invalid data
Valid data
Pixel 0,0
Valid data
Pixel 1,0
tHP
Pixel 2,0
Pixel 3,0
Invalid data
Invalid data
tHV
DE(Data Enable)
Ver. 1.0
1 1080
tVV
tVP
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3-4-2. LVDS Input Signal Characteristics
1) DC Specification
LVDS -
LVDS +
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LC420WUN
Product Specification
# VCM= {(LVDS +) + ( LVDS - )}/ 2
0V
V
CM
V
IN _MAXVIN _MIN
Description Symbol Min Max Unit Note
LVDS Common mode Voltage V
LVDS Input Voltage Range V
CM
IN
1.0 1.5 V -
0.7 1.8 V -
Change in common mode Voltage ȟVCM 250 mV -
2) AC Specification
T
clk
LVDS Clock
A
LVDS Data
(F
= 1/T
)
clk
A
LVDS 1’st Clock
LVDS 2nd/ 3rd/ 4thClock
tSKEW
tSKEW
t
SKEW_mintSKEW_max
clk
T
clk
80%
20%
t
RF
Description Symbol Min Max Unit Note
LVDS Differential Voltage
High Threshold
Low Threshold
LVDS Clock to Data Skew Margin t
LVDS Clock/DATA Rising/Falling time t
Effective time of LVDS t
LVDS Clock to Clock Skew Margin (Even to Odd) t
1. All Input levels of LVDS signals are based on the EIA 644 Standard.
Note
2. If t
isn’t enough, t
RF
should be meet the range.
eff
V
TH
V
TL
SKEW
RF
eff
SKEW_EO
3. LVDS Differential Voltage is defined within t
Ver. 1.0
100 300 mV
-300 -100 mV
|(0.25*T
260 (0.3*T
)/7| ps -
clk
)/7 ps 2
clk
·360 ps -
1/7* T
clk
eff
T
clk
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LC420WUN
Product Specification
360ps
V+
data
Vcm
Vdata
V+
clk
Vcm
0.5tui
tui
VTH
VTL
360ps
teff
tui : Unit Interval
Vclk
Ver. 1.0
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