LG Display LC420EUA-AEM1 Specification
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LC420EUA
Engineering Specification
LCM ENGINEERING
SPECIFICATION
Ver. 0.1
*MODEL LC420EUA
SUFFIX AEM1
Update Dec.15, 2011
() Preliminary Specification
(
) Final Specification
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LC420EUA
Engineering 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 Panel Pixel Structure
3-5 POWER SEQUENCE
4 OPTICAL SPECIFICATIONS
5 MECHANICAL CHARACTERISTICS
Page
2
3
4
5
6
6
9
12
15
16
19
22
6 RELIABILITY
7 INTERNATIONAL STANDARDS
7-1 SAFETY
7-2 ENVIRONMENT
8 PRECAUTIONS
8-1 MOUNTING PRECAUTIONS
8-2 OPERATING PRECAUTIONS
8-3 ELECTROSTATIC DISCHARGE CONTROL
8-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE
8-5 STORAGE
25
26
26
26
27
27
27
28
28
28
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Engineering Specification
RECORD OF REVISIONS
Revision No. Revision Date Page Description
0.1 Oct 07, 2011 - Preliminary Specification (First Draft)
1.0 Dec.15,2011 4 Power consumption(Total & LED Driver) is corrected
4 Outline Dimension is corrected
6 Electrical Characteristics are corrected
13 SOE Width & Timing is corrected
17 Optical characteristics are corrected
LC420EUA
22,23 Mechanical drawing is corrected
28 Cancel US patent
- Final Specification
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LC420EUA
Engineering Specification
1. General Description
The LC420EUA 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 display type which is operating in the normally black mode. It has a 42.02inch 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 1.67M(ture) 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.
PWM_OUT
1~3
LED Driver
+24.0V, GND, On/Off
Scanning Block 1
Scanning Block 2
Scanning Block 3
General Features
Active Screen Size 42.02inches(1067.31mm) diagonal
Outline Dimension
Pixel Pitch 0.4845 mm x 0.4845 mm
Pixel Format 1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement
Color Depth 8bit, 16.7 Million colors
Luminance, White 360 cd/m
Viewing Angle (CR>10) Viewing angle free ( R/L 178 (Min.), U/D 178 (Min.))
Power Consumption Total 54.1W(TBD) (Typ.) [Logic=8.6W(TBD) , LED Driver=45.5W(ExtVbr_B=100% )]
Weight 7.0(TBD) Kg (Typ.)
Display Mode Transmissive mode, Normally black
Surface Treatment Hard coating(2H), Anti-glare treatment of the front polarizer (Haze 10%)
960.4(H) Ý 560.4(V)X23.1mm(D) (Typ.)
2
(Center 1point ,Typ.)
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LC420EUA
Engineering Specification
2. Absolute Maximum Ratings
The following items are maximum values which, if exceeded, may cause faulty operation or permanent damage
to the LCD module.
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter Symbol
Value
Min Max
Logic&EPI Power Voltage VCC -0.5 +2.2 V
Gate High Voltage VGH +18.0 +30.0 V
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
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 r 2 ¶C )
OP 0+50
ST -20 +60
OP 10 90 %RH
ST 10 90 %RH
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.
5. The storage test condition:-20ć temperature/90% humidity to 60ć temperature/40% humidity ;
the operating test condition: 0ć temperature/90% humidity to 50ć temperature/60% humidity.
90%
Unit Note
DC
DC
1
¶C
4
¶C
¶C
2,3
60
60%
Wet Bulb
Temperature [
10
0
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [
¶C]
20
50
40
40%
30
Humidity [(%)RH]
10%
¶C]
Storage
Operation
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Engineering Specification
3. Electrical Specifications
It requires two kind of power inputs.
One is employed to power for the LCD circuit. The other Is used for the LED backlight circuit.
3-1. Electrical Characteristics
Table 2. DC ELECTRICAL CHARACTERISTICS
Parameter Symbol Condition MIN TYP MAX Unit Note
LC420EUA
Logic & EPI Power Voltage VCC - 1.62 1.8 1.98 V
Logic High Level Input Voltage VIH - 1.4(TBD) - VCC VDC
Logic Low Level Input Voltage VIL - 0 - 0.4(TBD) VDC
Source D-IC Analog Voltage VDD - 16.5 16.7 16.9 VDC
Half Source D-IC Analog
Voltage
Gamma Reference Voltage
Common Voltage Vcom Reverse 6.58 6.88 7.18 V
EPI input common voltage VCM LVDS Type 0.8(TBD) VCC/2
EPI Input eye diagram
EPI input differential voltage Vdiff - 150(TBD) - 500(TBD) mV
Gate High Voltage VGH
Gate Low Voltage VGL
GIP Bi-Scan Voltage
H_VDD - 8.15 8.35 8.55 V
V
GMH
V
GML
Veye
VGI_P
VGI_N
(GMA1 ~ GMA9)
(GMA10 ~ GMA18) 0.2 - H_VDD-0.2V VDC
- 90(TBD) - - mV
@ 25ć
@ 0ć
T
- VGL - VGH VDC
H_VDD+0.2
(TBD)
27.7 28 28.3 V
29.7 30 30.3 V
-5.2 -5.0 -4.8 VDC
-
VDD-0.2
(TBD)
VCC-0.6-
Vdiff/2(TBD)
DC
DC 6
V
DC
V
DC
DC
5
GIP Refresh Voltage
GIP Start Pulse Voltage VST - VGL - VGH V
GIP Operating Clock GCLK - VGL - VGH V
Total Power Current
Total Power Consumption
VGH
even/odd
LCD - - 528 688 mA 1
I
CD - - 6.34 8.23 Watt 1
PL
- VGL - VGH V
Note:
1. The specified current and power consumption are under the VLCD=12V., 25 r 2¶C, fV=60Hz
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 ·5% of typical voltage
5. In case of EPI signal spec, refer to Fig 2 for the more detail.
6. HVDD Voltage level is half of VDD and it should be between Gamma9 and Gamma10.
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OkGwP
OhGwP
OkGwP
VGH
VGHM
GND
VGL
FIG. 1 Gate Output Wave form without GPM and with GPM
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LC420EUA
Engineering Specification
Without GPM With GPM
0 V
0 V
Vdiff
Vdiff
FIG. 2-1 EPI Differential signal characteristics
EPI +
Vdiff
EPI -
Vcm
0 V
1 UI
0.5 UI
Veye
Veye
B1
B2
FIG. 2-2 Eye Pattern of EPI Input
FIG. 3 Measure point
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Table 3. ELECTRICAL CHARACTERISTICS (Continue)Table 3. ELECTRICAL CHARACTERISTICS (Continue)
LC420EUA
Parameter Symbol
LED Driver :
Power Supply Input Voltage VBL 22.8 24.0 25.2 Vdc 1
Power Supply Input Current IBL
Power Supply Input Current (In-Rush) In-rush --3.5A
Power Consumption PBL -
Input Voltage for
Control System
Signals
LED :
Life Time 30,000 Hrs 2
On/Off
On V on 2.5 - 5.0 Vdc
Off V off -0.3 0.0 0.7 Vdc
Min Typ Max
-
Values
1.9
45.5 49.8
2.1
Unit Notes
A1
VBL = 22.8V
BR-B
= 100%
ExtV
W1
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 V
BR (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.
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LC420EUA
Engineering Specification
3-2. Interface Connections
This LCD module employs two kinds of interface connection, two 50-pin FFC connector are used for the
module electronics.
3-2-1. LCD Module
-LCD Connector (CN1): TF06L-50S-0.5SH (Manufactured by HRS) or Compatible
Table 3-1. MODULE CONNECTOR(CN1) PIN CONFIGURATION
No Symbol Description No Symbol Description
1 LTD_OUT LTD OUTPUT 26 GND Ground
2 NC No Connection 27 EPI2- EPI Receiver Signal(2-)
3 GCLK1 GIP GATE Clock 1 28 EPI2+ EPI Receiver Signal(2+)
4 GCLK2 GIP GATE Clock 2 29 GND Ground
5 GCLK3 GIP GATE Clock 3 30 GND Ground
6 GCLK4 GIP GATE Clock 4 31 EPI1- EPI Receiver Signal(1-)
7 GCLK5 GIP GATE Clock 5 32 EPI1+ EPI Receiver Signal(1+)
8 GCLK6 GIP GATE Clock 6 33 GND Ground
9 VGI_N GIP Bi-Scan (Normal =VGL Rotate = VGH) 34 VCC Logic & EPI Power Voltage
10 VGI_P GIP Bi-Scan (Normal =VGH Rotate = VGL) 35 NC No Connection
11 VGH_ODD GIP Panel VDD for Odd GATE TFT 36 LOCKOUT3 LOCKOUT3
12 VGH_EVEN GIP Panel VDD for Even GATE TFT 37 NC No Connection
13 VGL GATE Low Voltage 38 GND Ground
14 VST VERTICAL START PULSE 39 GMA 18 GAMMA VOLTAGE 18 (Output From LCD)
15 GIP_Reset GIP Reset 40 GMA 16 GAMMA VOLTAGE 16
16 VCOM_L_FB VCOM Left Feed-Back Output 41 GMA 15 GAMMA VOLTAGE 15
17 VCOM_L VCOM Left Input 42 GMA 14 GAMMA VOLTAGE 14
18 GND Ground 43 GMA 12 GAMMA VOLTAGE 12
19 VDD Driver Power Supply Voltage 44 GMA 10 GAMMA VOLTAGE 10 (Output From LCD)
20 VDD Driver Power Supply Voltage 45 GMA 9 GAMMA VOLTAGE 9 (Output From LCD)
21 H_VDD Half Driver Power Supply Voltage 46
22 GND Ground 47 GMA 5 GAMMA VOLTAGE 5
23 EPI3- EPI Receiver Signal(3-) 48 GMA 4 GAMMA VOLTAGE 4
24 EPI3+ EPI Receiver Signal(3+) 49 GMA 3 GAMMA VOLTAGE 3
25 GND Ground 50 GMA 1 GAMMA VOLTAGE 1(Output From LCD)
GMA 7 GAMMA VOLTAGE 7
Note :
1. Please refer to application note for details.
(GIP & Half VDD & Gamma Voltage setting)
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