LG Display LC420EUS-SCA2 Specification
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LC420EUS
Product Specification
SPECIFICATION
FOR
APPROVAL
)
(
(
Preliminary Specification
)
Final Specification
Title 42.0” WUXGA TFT LCD
BUYER
MODEL
APPROVED BY
/
/
SIGNATURE
DATE
SUPPLIER LG.Display Co., Ltd.
*MODEL LC420EUS
SUFFIX SCA2 (RoHS Verified)
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
J.Y. LEE / Team Leader
REVIEWED BY
J.K.KIM / Project Leader
SIGNATURE
DATE
PREPARED BY
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0
W.K.SANG / Engineer
TV Products Development Dept.
LG. Display LCD Co., Ltd
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LC420EUS
Product Specification
CONTENTS
Number ITEM
COVER 0
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 DATA MAPPING AND TIMING
3-5 PANEL PIXEL STRUCTURE
3-6 POWER SEQUENCE
4 OPTICAL SPECIFICATIONS
5 MECHANICAL CHARACTERISTICS
Page
1
2
3
4
5
5
9
12
15
16
17
18
22
6 RELIABILITY
7 INTERNATIONAL STANDARDS
7-1 SAFETY
7-2 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
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Revision No. Revision Date Page Description
0.0 June, 11, 2010 - Preliminary Specification(First Draft)
0.1 Aug.12.2010 7,8 Note 7 is inserted as LED Life Time
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LC420EUS
Product Specification
RECORD OF REVISIONS
18
1.0 Aug.18.2010 Final CAS
3
3
24
Rising/Falling Response Timing is changed
Rising/Falling : 5(Typ)-> 6(Typ) , 7(Max)->8(Max)
Outline Dimension is changed because of simple LCM
973.2(H) x 566.2 (V) x 10.8 mm(B)/25.3(D) (Typ.)
→ 973.2(H) x 566.2 (V) x 10.8 mm(B)
Power Consumption is changed
Total 111.2 W (Typ.)
(Logic=18.7 W with LGD T-Con Board, Backlight=92.5W @ with
Driver
→ Total 100.06 W (Typ.)
(Logic=18.66 W with LGD T-Con Board, Backlight=81.4W @ with
Driver
Power connector wire length is inserted
355·XW
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1. General Description
The LC420EUS is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED)
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 42.02 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 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.
Therefore, it can present a palette of more than 16.7M(true) colors.
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.
Power (VCC, VDD, VGH, VGL)
Source Control Signal
Gate Control Signal
Gamma Reference Voltage
mini-LVDS (RGB) for Left drive
CN1
(60pin)
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Product Specification
Gate Driver Circuit
G1
LC420EUS
Source Driver Circuit
S1 S1920
Power (VCC, VDD, VGH, VGL)
Source Control Signal
Gate Control Signal
Gamma Reference Voltage
mini-LVDS (RGB) for Right drive
LED Anode
LED Cathode
CN2
(60pin)
CN1 (12pin)
CN2 (13pin)
G1080
TFT - LCD Panel
(1920 Ý RGB Ý 1080 pixels)
[Gate In Panel]
H : 6 Block
V : 2Block
Local Dimming : 12 Block
General Features
Active Screen Size 42.02 inches(1067.31mm) diagonal
Outline Dimension 973.2(H) x 566.2 (V) x 10.8 mm(B)
Pixel Pitch 0.4845 mm x 0.4845 mm
Pixel Format 1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement
Color Depth
Drive IC Data Interface
Luminance, White 450 cd/m
Viewing Angle (CR>10) Viewing angle free ( R/L 178 (Min.), U/D 178 (Min.))
Power Consumption
Weight 11.1Kg (Typ.)
Display Mode Transmissive mode, Normally black
Surface Treatment Hard coating (3H), Anti-glare treatment of the front polarizer (Haze 10%)
8-bit, 16.7 M colors (Ć 1.06B colors @ 10 bit (D) System Output )
Source D-IC : 8-bit mini-LVDS, gamma reference voltage, and control signals
Gate D-IC : Line on Glass(LOG) Through Source D-IC
2
(Center 1point ,Typ.)
Total 100.06 W (Typ.)
(Logic=18.66 W with LGD T-Con Board, Backlight=81.4W @ with Driver
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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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LC420EUS
Product Specification
Parameter Symbol
Unit Note
Min Max
Value
Logic Power Voltage VCC -0.5 +4.0 V
Gate High Voltage VGH +18.0 +30.0 V
DC
DC
Gate Low Voltage VGL -8.0 -4.0 VDC
Source D-IC Analog Voltage VDD -0.3 +18.0 VDC
Gamma Ref. Voltage (Upper) VGMH ½VDD-0.5 VDD+0.5 VDC
Gamma Ref. Voltage (Low) VGML -0.3 ½ VDD+0.5 VDC
LED Input Voltage Vf - +180.0 VDC
Panel Front Temperature TSUR -+68
Operating Temperature T
Storage Temperature T
Operating Ambient Humidity H
Storage Humidity H
Note:
1. Ambient temperature condition (Ta = 25 2 ¶C )
OP 0+50
ST -20 +60
OP 10 90 %RH
ST 10 90 %RH
¶C
¶C
¶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 40ć condition.
4. The maximum operating temperature is based on the test condition that the surface temperature
of display area is less than or equal to 68 ć 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 ć. The range of operating temperature may
degrade in case of improper thermal management in final product design.
90%
60
60%
1
4
2,3
Wet Bulb
Temperature [
10
0
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [
¶C]
20
30
40
50
¶C]
40%
10%
Humidity
[(%)RH]
Storage
Operation
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3. Electrical Specifications
3-1. Electrical Characteristics
It requires several power inputs. The VCC is the basic power of LCD Driving power sequence, Which is used
to logic power voltage of Source D-IC and Gate D-IC.
Table 2. ELECTRICAL CHARACTERISTICS
Parameter Symbol Condition MIN TYP MAX Unit Note
Logic Power Voltage VCC - 3.0 3.3 3.6 VDC
Logic High Level Input Voltage VIH 2.3 VCC VDC
Logic Low Level Input Voltage VIL 0 0.8 VDC
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LC420EUS
Product Specification
Source D-IC Analog Voltage VDD - 16.6 16.8 17.0 VDC
Half Source D-IC Analog
Voltage
Gamma Reference Voltage
Common Voltage Vcom - 5.7 6.0 6.3 V
Mini-LVDS Clock frequency CLK 3.0V≤VCC ≤3.6V 312 MHz
mini-LVDS input Voltage
(Center)
mini-LVDS input Voltage
Distortion (Center)
mini-LVDS differential
Voltage range
mini-LVDS differential
Voltage range Dip
Gate High Voltage VGH 26.7 27.0 27.3 V
Gate Low Voltage VGL -5.2 -5.0 -4.8 VDC
Gate High Modulation Voltage VGHM - - 18.2 -VDC Fig.1
Total Power Current
Total Power Consumption
H_VDD - 8.15 8.4 8.65 VDC
V
GMH
V
GML
IB
V
IB 0.8 V
ΔV
ID 150 800 mV
V
ΔV
ID 25 800 mV
I
LCD --1555 mA 1,2
PL
CD --18.66 Watt
(GMA1 ~ GMA9) ½*VDD VDD-0.2
(GMA10 ~ GMA18) 0.2 ½*VDD
0.7 +
(VID/2)
Mini-LVDS Clock
and Data
(VCC-1.2)
− VID / 2
V
DC
5
Note:
1. The specified current and power consumption are under the VLCD=12V., 25 2¶C, fV=240Hz
condition whereas mosaic pattern(8 x 6) is displayed and f
is the frame frequency.
V
2. The above spec is based on the basic model.
3. All of the typical gate voltage should be controlled within 1% voltage level
4. Ripple voltage level is recommended under 10%
5. In case of mini-LVDS signal spec, refer to Fig 2 for the more detail.
6. Logic level Input Signal : SOE, POL, GSP, H_CONV, OPT_N
7. HVDD Voltage level is half of VDD and it should be between Gamma9 and Gamma10
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VGL
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LC420EUS
Product Specification
Without GPM With GPM
FIG. 1 Gate Output Wave form without GPM and with GPM
FIG. 2 Description of VID, ΔVIB, ΔVID
FIG. 3 Measure point
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Table 3. ELECTRICAL CHARACTERISTICS (Continue)
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LC420EUS
Product Specification
Parameter Symbol
Values
Unit Note
Min Typ Max
Backlight Assembly :
165 mAdc
384 mAdc
Forward Current
Anode I
F (anode)
(one array)
Cathode I
F (cathode)
52.25 55 57.75 mAdc
121.6 128 134.4 mAdc
Forward Voltage V
Forward Voltage Variation
V
118.2
F
F
131.0
123.4
136.3
128.5 Vdc
141.6 Vdc
1.7 Vdc
81.4 84.8 W
Power Consumption P
Burst Dimming Duty On duty
BL
62.8 65.2 W
1 100 %
130%
Burst Dimming Frequency 1/T 95 252 Hz
LED Array : (APPENDIX-V)
·5%
2, 3
3D Mode
·5%
2, 3
3D Mode
4
3D Mode
5
6
3D Mode
On Duty=30%
3D Mode
8
Life Time 30,000 Hrs
Notes :
The design of the LED driver must have specifications for the LED array in LCD Assembly.
The electrical characteristics of LED driver are based on Constant Current driving type.
The performance of the LED in LCM, for example life time or brightness, is extremely influenced by the
characteristics of the LED Driver. So, all the parameters of an LED driver should be carefully designed.
When you design or order the LED driver, please make sure unwanted lighting caused by the mismatch of the
LED and the driver (no lighting, flicker, etc) has never been occurred. When you confirm it, the LCD–
Assembly should be operated in the same condition as installed in your instrument.
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¶ ¶ ¶
¶ ¶ ¶
¶ ¶ ¶
¶ ¶ ¶
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Product Specification
Notes :
1. Electrical characteristics are based on LED Array specification.
2. Specified values are defined for a Backlight Assembly. (IBL : 4 LED array, 165mA/LED array)
3. Each LED array has one anode terminal and three cathode terminals.
The forward current(I
) of the anode terminal is 165mA and it supplies 55mA into three strings, respectively
F
19 (LED Pakage / 1string)
LC420EUS
Anode
4. The forward voltage(V
5. ΔV
means Max VF-Min VFin one Backlight. So VFvariation in a Backlight isn’t over Max. 1.7V
F
) of LED array depends on ambient temperature (Appendix-V)
F
Cathode #1
Cathode #2
3(LED String / 1 Array)
Cathode #3
6. Maximum level of power consumption is measured at initial turn on.
Typical level of power consumption is measured after 1hrs aging at 25 2¶C.
7. The life time(MTTF) is determined as the time at which brightness of the LED is 50% compared to that of
initial value at the typical LED current on condition of continuous operating at 25 2¶C, based on duty 100%.
8. The reference method of burst dimming duty ratio.
It is recommended to use synchronous V-sync frequency to prevent waterfall
(Vsync x 1 =Burst Frequency)
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3-2. Interface Connections
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LC420EUS
Product Specification
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3-2-2. Backlight Module
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LC420EUS
Product Specification
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