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LC420EUN
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ) Final Specification
Title 42.0" WUXGA TFT LCD
BUYER GENERAL SUPPLIER LG Display Co., Ltd.
MODEL *MODEL LC420EUN
SUFFIX SCV1
*When you obtain standard approval,
please use the above model name without suffix
SIGNATURE SIGNATURE
APPROVED BY APPROVED BY
DATE DATE
/ P.Y Kim / Team Leader
REVIEWED BY
/ S. J Cho / Project Leader
PREPARED BY
/ J. H Oh / Engineer
Please return 1 copy for your confirmation with TV Products Development Dept.
your signature and comments. LG Display LCD Co., Ltd
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Product Specification
CONTENTS
Number ITEM Page
COVER 1
CONTENTS 2
RECORD OF REVISIONS 3
1 GENERAL DESCRIPTION 4
2 ABSOLUTE MAXIMUM RATINGS 5
3 ELECTRICAL SPECIFICATIONS 6
3-1 ELECTRICAL CHARACTERISTICS 6
3-2 INTERFACE CONNECTIONS 8
3-3 SIGNAL TIMING SPECIFICATIONS 10
3-4 LVDS SIGNAL SPECIFICATIONS 11
3-5 COLOR DATA REFERENCE 14
3-6 POWER SEQUENCE 15
4 OPTICAL SPECIFICATIONS 17
5 MECHANICAL CHARACTERISTICS 21
6 RELIABILITY 24
7 INTERNATIONAL STANDARDS 25
7-1 SAFETY 25
7-2 EMC 25
7-3 Environment 25
8 PACKING 26
8-1 INFORMATION OF LCM LABEL 26
8-2 PACKING FORM 26
9 PRECAUTIONS 27
9-1 MOUNTING PRECAUTIONS 27
9-2 OPERATING PRECAUTIONS 27
9-3 ELECTROSTATIC DISCHARGE CONTROL 28
9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE 28
9-5 STORAGE 28
9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM 28
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LC420EUN
Product Specification
RECORD OF REVISIONS
Revision No. Revision Date Page Description
0.1 Aug. 11. 2010 - Preliminary Specification (First Draft)
0.2 Aug, 30, 2010 29 # APPENDIX-I
7 ELECTRICAL CHARACTERISTICS
Final Sept.08.2010 23 5. Mechanical Characteristics
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LC420EUN
Product Specification
1. General Description
The LC420EUN is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED)
b a c k l i g h t s y s t e m . T h e m a t r i x e mplo ys a-Si Th in Film Trans istor as the active elem ent.
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 colors.
It has been designed to apply the 10-bit 4-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.
Mini-LVDS(RGB)
EEPROM
Source Driver Circuit
SCL SDA S1 S1920
G1
LVDS LVDS 1,2 Timing Controller
2Port LVDS Rx + DGA + ODC
TFT - LCD Panel
LVDS
Option Integrated Control (1920 RGB 1080 pixels)
signal [Gate In Panel]
Select Signals
CN1
(51pin) G1080
Bit
Select I2C
Power Circuit Power Signals
+12.0V
Block
Local Dimming : 12 Block
+24.0V, GND, On/Off
ExtVBR-B LED Driver
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 360 cd/m2 (Center 1point ,Typ.)
Viewing Angle (CR>10) Viewing angle free ( R/L 178 (Min.), U/D 178 (Min.))
Power Consumption Total 95.8W (Typ.) [Logic= 7.8W, LED Driver= 88(TBD)W (ExtVbr_B=100% )]
Weight 11.3 Kg (Typ.) ,12.0Kg(Max)
Display Mode Transmissive mode, Normally black
Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer (Haze 10%)
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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
Parameter Symbol Unit Note
Min Max
LCD Circuit VLCD -0.3 +14.0 VDC
Power Input Voltage
Driver VBL -0.3 + 27.0 VDC
ON/OFF VOFF / VON -0.3 +5.5 VDC 1
Driver Control Voltage
Brightness EXTVBR-B 0.0 +5.5 VDC
T-Con Option Selection Voltage VLOGIC -0.3 +4.0 VDC
Operating Temperature TOP 0 +50 C
2,3
Storage Temperature TST -20 +60 C
Panel Front Temperature TSUR - +68 C 4
Operating Ambient Humidity HOP 10 90 %RH
2,3
Storage Humidity HST 10 90 %RH
Note1. Ambient temperature condition (Ta = 25 r 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 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%
60
60%
50 Storage
Humidity [(%)RH]
Wet Bulb
Temperature [ C]
40
40%
Operation
30
20
10
0
10%
-20 0 10 20 30 40 50 60 70 80
Dry Bulb Temperature [ C]
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LC420EUN
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 LED
backlight and LED Driver circuit.
Table 2. ELECTRICAL CHARACTERISTICS
Value
Parameter Symbol Unit Note
Min Typ Max
Circuit :
Power Input Voltage VLCD 10.8 12.0 13.2 VDC
455 650 845 mA 1
Power Input Current ILCD
668 955 1240 mA 2
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 VLCD=12.0V, Ta=25 r 2 C, fV=60Hz
condition whereas mosaic pattern(8 x 6) is displayed and fV is 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 0.5ms (min.).
White : 1023 Gray
Black : 0 Gray
Mosaic Pattern(8 x 6)
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Table 3. ELECTRICAL CHARACTERISTICS (Continue)
Values
Parameter Symbol Unit Notes
Min Typ Max
LED Driver :
Power Supply Input Voltage VBL 22.8 24.0 25.2 Vdc 1
Power Supply Input Current IBL_A - 3.7 4.0 A Ext VBR-B = 100%
VBL = 22.8V
Power Supply Input Current (In-Rush) Irush - - 6.5 A Ext VBR-B = 100%
4
Power Consumption PBL - 88 94.1 W Ext VBR-B = 100%
On V on 2.5 - 5.0 Vdc
On/Off
Off V off -0.3 0.0 0.7 Vdc
Input Voltage for
Control System Brightness Adjust ExtVBR-B 10 - 100 % On Duty
Signals
PWM Frequency for PAL 100 Hz 3
NTSC & PAL NTSC 120 Hz 3
LED :
Life Time 30,000 50,000 Hrs 2
Notes :
1. Electrical characteristics are determined after the unit has been `ON' and stable for approximately 60
minutes at 25 2 C. The specified current and power consumption are under the typical supply Input voltage
24Vand VBR (ExtVBR-B : 100%), it is total power consumption.
2. The life time(MTTF) is determined as the time which luminance of the LED is 50% compared to that of initial
value at the typical LED current (ExtVBR-B :100%) on condition of continuous operating in LCM state at
25 2 C.
3. LGD recommend that the PWM freq. is synchronized with One time harmonic of Vsync signal of system.
Though PWM frequency is over 120Hz (max 252Hz), function of LED Driver is not affected.
4. The duration of rush current is about 10ms.
5. Even though inrush current is over the specified value, there is no problem if I 2T spec of fuse is satisfied.
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Product Specification
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 GND Ground 27 Bit Select `H' or NC= 10bit(D) , `L' = 8bit
2 NC No Connection 28 R2AN SECOND LVDS Receiver Signal (A-)
3 NC No Connection 29 R2AP SECOND LVDS Receiver Signal (A+)
4 NC No Connection (Reserved for LGD) 30 R2BN SECOND LVDS Receiver Signal (B-)
5 NC No Connection (Reserved for LGD) 31 R2BP SECOND LVDS Receiver Signal (B+)
6 NC No Connection (Reserved for LGD) 32 R2CN SECOND LVDS Receiver Signal (C-)
7 LVDS Select `H' =JEIDA , `L' or NC = VESA 33 R2CP SECOND LVDS Receiver Signal (C+)
8 NC No Connection 34 GND Ground
9 NC No Connection 35 R2CLKN SECOND LVDS Receiver Clock Signal(-)
10 NC No Connection 36 R2CLKP SECOND LVDS Receiver Clock Signal(+)
11 GND Ground 37 GND Ground
12 R1AN FIRST LVDS Receiver Signal (A-) 38 R2DN SECOND LVDS Receiver Signal (D-)
13 R1AP FIRST LVDS Receiver Signal (A+) 39 R2DP SECOND LVDS Receiver Signal (D+)
14 R1BN FIRST LVDS Receiver Signal (B-) 40 R2EN SECOND LVDS Receiver Signal (E-)
15 R1BP FIRST LVDS Receiver Signal (B+) 41 R2EP SECOND LVDS Receiver Signal (E+)
16 R1CN FIRST LVDS Receiver Signal (C-) 42 NC No Connection
17 R1CP FIRST LVDS Receiver Signal (C+) 43 NC No Connection
18 GND Ground 44 GND Ground
19 R1CLKN FIRST LVDS Receiver Clock Signal(-) 45 GND Ground
20 R1CLKP FIRST LVDS Receiver Clock Signal(+) 46 GND Ground
21 GND Ground 47 NC No connection
22 R1DN FIRST LVDS Receiver Signal (D-) 48 VLCD Power Supply +12.0V
23 R1DP FIRST LVDS Receiver Signal (D+) 49 VLCD Power Supply +12.0V
24 R1EN FIRST LVDS Receiver Signal (E-) 50 VLCD Power Supply +12.0V
25 R1EP FIRST LVDS Receiver Signal (E+) 51 VLCD Power Supply +12.0V
26 NC No Connection - - -
Note 1. All GND(ground) pins should be connected together to the LCD module's metal frame.
2. All VLCD (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. 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.
6. 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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Product Specification
3-2-2. Backlight Module
Master
- LED Driver Connector : 20022WR-14B1(Yeonho)
or Equivalent
- Mating Connector : 20022HS-14 or Equivalent
Table 5. LED DRIVER CONNECTOR PIN CONFIGURATION
Pin No Symbol Description Master Note
1 VBL Power Supply +24.0V VBL
2 VBL Power Supply +24.0V VBL
3 VBL Power Supply +24.0V VBL
4 VBL Power Supply +24.0V VBL
5 VBL Power Supply +24.0V VBL
6 GND Backlight Ground GND
7 GND Backlight Ground GND
8 GND Backlight Ground GND 1
9 GND Backlight Ground GND
10 GND Backlight Ground GND
11 NC No connection OPEN or GND
12 VON/OFF Backlight ON/OFF control VON/OFF
13 EXTVBR-B External PWM EXTVBR-B 2
14 NC No connection OPEN or GND TBD
Notes : 1. GND should be connected to the LCD module's metal frame.
2. High : on duty / Low : off duty, Pin#13 can be opened. ( if Pin #13 is open , EXTVBR-B is 100% )
3. Each impedance of pin #12 and 13 is over 50 [K ].
Rear view of LCM
PCB
14
...
...
1
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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
Horizontal Blank tHB 100 140 240 tclk
Total tHP 1060 1100 1200 tclk 2200/2
Display Period tVV - 1080 - tHP
Vertical Blank tVB 11 45 69 tHP
Total tVP 1091 1125 1149 tHP
DCLK fCLK 70 74.25 77 MHz 148.5/2
Frequency Horizontal fH 65 67.5 70 KHz
Vertical fV 57 60 63 Hz
Table 6-2. TIMING TABLE for PAL (DE Only Mode)
ITEM Symbol Min Typ Max Unit Note
Display Period tHV - 960 - tclk
Horizontal Blank tHB 100 140 240 tclk
Total tHP 1060 1100 1200 tclk 2200/2
Display Period tVV - 1080 - tHP
Vertical Blank tVB 228 270 300 tHP
Total tVP 1308 1350 1380 tHP
DCLK fCLK 70 74.25 77 MHz 148.5/2
Frequency Horizontal fH 65 67.5 70 KHz
Vertical fV 47 50 53 Hz
Note 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
0.7VDD
DE, Data
0.3VDD
tCLK
0.5 VDD
DCLK
Valid data
First data Invalid data Pixel 0,0 Pixel 2,0 Invalid data
Valid data
Second data Invalid data Pixel 1,0 Pixel 3,0 Invalid data
DE(Data Enable)
tHV
tHP
1 1080
DE(Data Enable)
tVV
tVP
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3-4-2. LVDS Input Signal Characteristics
1) DC Specification
LVDS -
LVDS +
V CM V IN _ MAX V IN _ MIN
# V CM = {( LVDS +) + ( LVDS - )} /2
0V
Description Symbol Min Max Unit Note
LVDS Common mode Voltage VCM 1.0 1.5 V -
LVDS Input Voltage Range VIN 0.7 1.8 V -
Change in common mode Voltage VCM 250 mV -
2) AC Specification
Tclk
LVDS Clock
A
LVDS Data
( F clk = 1 /T clk )
tSKEW tSKEW
A
Tclk
LVDS 1'st Clock 80%
LVDS 2nd / 3rd / 4th Clock
20%
tRF
tSKEW_min tSKEW_max
Description Symbol Min Max Unit Note
High Threshold VTH 100 300 mV
LVDS Differential Voltage 3
Low Threshold VTL -300 -100 mV
LVDS Clock to Data Skew Margin tSKEW |(0.25*Tclk)/7| ps -
LVDS Clock/DATA Rising/Falling time tRF 260 (0.3*Tclk)/7 ps 2
Effective time of LVDS teff 360 ps -
LVDS Clock to Clock Skew Margin (Even to Odd) tSKEW_EO 1/7* Tclk Tclk -
Note 1. All Input levels of LVDS signals are based on the EIA 644 Standard.
2. If tRF isn't enough, teff should be meet the range.
3. LVDS Differential Voltage is defined within teff
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360ps
0.5tui tui
V+
data
VTH
Vcm
VTL
V-
360ps
data
teff
V+ tui : Unit Interval
clk
Vcm
V-
clk
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3-5. Color Data Reference
The brightness of each primary color(red,green,blue) is based on the 10bit gray scale data input for the color.
The higher binary input, the brighter the color. Table 7 provides a reference for color versus data input.
Table 7. COLOR DATA REFERENCE
Input Color Data
RED GREEN BLUE
Color MSB LSB MSB LSB MSB LSB
Basic
Color
RED ...
GREEN
BLUE ...
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3-6. Power Sequence
3-6-1. LCD Driving circuit
90%
Power Supply For LCD
VLCD 10% 10% 10%
0V
T1
T5
T2
Valid Data Vcm : LVDS Common mode Voltage
30%
Interface Signal (Tx) 0V
100% T3 T4
T6
User Control Signal
(LVDS_select, BIT_select)
Power for Lamp T7 Lamp ON
Table 8. POWER SEQUENCE
Value
Parameter Unit Notes
Min Typ Max
T1 0.5 - 20 ms
T2 0 - - ms 4
T3 200 - - ms 3
T4 200 - - ms 3
T5 1.0 - - s 5
T6 - - T2 ms 4
T7 0.5 - s
Note :1. Please avoid floating state of interface signal at invalid period.
2. When the power supply for LCD (VLCD) is off, be sure to pull down the valid and invalid data to 0V.
3. The T3 / T4 is recommended value, the case when failed to meet a minimum specification,
abnormal display would be shown. There is no reliability problem.
4. If the on time of signals(Interface signal and user control signals) precedes the on time of Power(VLCD),
it will be happened abnormal display. When T6 is NC status, T6 doesn't need to be measured.
5. T5 should be measured after the Module has been fully discharged between power off and on
period.
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3-6-2. Sequence for Inverter
Power Supply For Inverter
24V (typ.)
90% 90%
VBL
10%
0V
T1 T2 T5
* VON/OFF
Lamp ON
EXTVBR-B
T4 T7
3-6-3. Dip condition for Inverter
T6
VBL : 24V
VBL(Typ.) x 0.8
0V
Table 9. Power Sequence for Inverter
Values
Parameter Units Note
Min Typ Max
T1 20 - - ms 1
T2 500 - - ms
T4 0 - ms 2
T5 10 - - ms
T6 - - 10 ms VBL(Typ) x 0.8
T7 1000 - - ms 3
Notes : 1. T1 describes rising time of 0V to 24V and this parameter does not applied at restarting time.
2. T4(max) is less than T2.
3. It is the recommendation to input Max Duty to Inverter** for EXTVBR-B during T7 period.
* The recommendation of VON/OFF rising time is under 10ms.
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4. Optical Specification
Optical characteristics are determined after the unit has been `ON' and stable in a dark environment at
25 2 C. The values are specified at an approximate distance 50cm from the LCD surface at a viewing angle
of ) and T equal to 0 .
It is presented additional information concerning the measurement equipment and method in FIG. 1.
LCD Module Pritchard 880 or
Optical Stage(x,y)
equivalent
50cm
FIG. 1 Optical Characteristic Measurement Equipment and Method
Ta= 25 2 C, VLCD=12.0V, fV=60Hz, Dclk=74.25MHz,
Table 10. OPTICAL CHARACTERISTICS EXTVBR-B =100%
Value
Parameter Symbol Unit Note
Min Typ Max
Contrast Ratio CR 1000 1400 - 1
2
Surface Luminance, white LWH 290 360 - cd/m 2
Luminance Variation G WHITE 5P - - 1.3 3
Gray-to-Gray G to G - 5 8 ms 4
Response Time
Uniformity G G TO G - - 1 ms 5
Rx 0.647
RED
Ry 0.332
Gx 0.309
GREEN
Color Coordinates Gy Typ 0.601 Typ
[CIE1931] Bx -0.03 0.149 +0.03
BLUE
By 0.059
Wx 0.279
WHITE
Wy 0.292
Color Temperature 10,000 K
Color Gamut 72 %
Viewing Angle (CR>10)
x axis, right(I=0 ) Tr 89 - -
x axis, left (I=180 ) Tl 89 - -
degree 6
y axis, up (I=90 ) Tu 89 - -
y axis, down (I=270 ) Td 89 - -
Gray Scale - - - 7
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Note : 1. Contrast Ratio(CR) is defined mathematically as :
Surface Luminance with all white pixels
Contrast Ratio =
Surface Luminance with all black pixels
It is measured at center 1-point.
2. Surface luminance are determined after the unit has been `ON' and 1 Hour after lighting the
backlight in a dark environment at 25 2 C. Surface luminance is the luminance value at center
1-point across the LCD surface 50cm from the surface with all pixels displaying white.
For more information see the FIG. 2.
3. The variation in surface luminance , G WHITE is defined as :
G WHITE(5P) = Maximum(Lon1,Lon2, Lon3, Lon4, Lon5) / Minimum(Lon1,Lon2, Lon3, Lon4, Lon5)
Where Lon1 to Lon5 are the luminance with all pixels displaying white at 5 locations .
For more information, see the FIG. 2.
4. Response time is the time required for the display to transit from G(N) to G(M) (Rise Time, TrR)
and from G(M) to G(N) (Decay Time, TrD). For additional information see the FIG. 3. (N LC420EUN
Product Specification
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6. Reliability
Table 13. ENVIRONMENT TEST CONDITION
No. Test Item Condition
1 High temperature storage test Ta= 60 C 240h
2 Low temperature storage test Ta= -20 C 240h
3 High temperature operation test Ta= 50 C 50%RH 240h
4 Low temperature operation test Ta= 0 C 240h
Wave form : random
Vibration level : 1.0Grms
Vibration test
5 Bandwidth : 10-300Hz
(non-operating)
Duration : X,Y,Z, 30 min
Each direction per 10 min
Shock level : 50Grms,35G(Z axis)
Shock test Waveform : half sine wave, 11ms
6
(non-operating) Direction : X, Y, Z
One time each direction
7 Humidity condition Operation Ta= 40 C ,90%RH
Altitude operating 0 - 15,000 ft
8
storage / shipment 0 - 40,000 ft
Note : Before and after Reliability test, LCM should be operated with normal function.
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7. International Standards
7-1. Safety
a) UL 60065, Seventh Edition, Underwriters Laboratories Inc.
Audio, Video and Similar Electronic Apparatus - Safety Requirements.
b) CAN/CSA C22.2 No.60065:03, Canadian Standards Association.
Audio, Video and Similar Electronic Apparatus - Safety Requirements.
c) EN 60065:2002 + A11:2008, European Committee for Electrotechnical Standardization (CENELEC).
Audio, Video and Similar Electronic Apparatus - Safety Requirements.
d) IEC 60065:2005 + A1:2005, The International Electrotechnical Commission (IEC).
Audio, Video and Similar Electronic Apparatus - Safety Requirements.
(Including report of IEC60825-1:2001 clause 8 and clause 9)
Notes
1. Laser (LED Backlight) Information
7-2. EMC
a) ANSI C63.4 "American National Standard for Methods of Measurement of Radio-Noise
Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz."
American National Standards Institute (ANSI), 2003.
b) CISPR 22 "Information technology equipment