LC420WUH
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 LC420WUH
SUFFIX SCM1
*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
PREPARED BY
S. M Lee / Engineer
SIGNATURE
DATE
Please return 1 copy for your confirmation with
your signature and comments.
Ver.1.2
TV Products Development Dept.
LG Display LCD Co., Ltd
1 /41
Product Specification
CONTENTS
LC420WUH
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 DATA MAPPING AND TIMING
3-5 PANEL PIXEL STRUCTURE
3-6 POWER SEQUENCE
4 OPTICAL SPECIFICATIONS
5 MECHANICAL CHARACTERISTICS
Page
2
3
4
5
6
6
12
15
18
19
20
21
25
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
Ver.1.2
28
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2 /41
Product Specification
RECORD OF REVISIONS
Revision No. Revision Date Page Description
1.2 Mar. 16..2010 - Final Specification
LC420WUH
Ver.1.2
3 /41
LC420WUH
Product Specification
1. General Description
The LC420WUH 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 42.02 inch diagonally measured
act i ve d is p la y are a w i th W U X GA r e s ol u t ion ( 1 0 8 0 vertica l by 1920 horizonta l pixel a r ray) .
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,HVDD,VGH,VGL)
Source Control Signal
Gate Control Signal
Gamma Reference Voltage
mini-LVDS (RGB) for Left drive
CN1
(60pin)
S1 S1920
G1
Source Driver Circuit
Power (VCC,VDD,HVDD,VGH,VGL)
Source Control Signal
Gate Control Signal
Gamma Reference Voltage
mini-LVDS (RGB) for Right drive
High Input
High Input
CN4&5, 3pin*2ea, 8 Lamps/@ 68 mA
CN6&7, 3pin*2ea, 8 Lamps/@ 68 mA
CN2
(60pin)
G1080
TFT - LCD Panel
(1920 × RGB × 1080 pixels)
[Gate In Panel]
Scanning Block 2
Scanning Block 1
Scanning Block 2
General Features
Active Screen Size 42.02 inches(1067.31mm) diagonal
Outline Dimension 983.0(H) x 576.0 (V) x 35.5 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 8-bit, 16.7 M colors (※ 1.06B colors @ 10 bit (D) System Output )
Drive IC Data Interface
Luminance, White 500 cd/m2 (Center 1point ,Typ.)
Viewing Angle (CR>10) Viewing angle free ( R/L 178 (Min.), U/D 178 (Min.))
Power Consumption
Weight 8.7Kg (Typ.)
Display Mode Transmissive mode, Normally black
Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer (Haze 10%)
Source D-IC : 8-bit mini-LVDS, gamma reference voltage, and control signals
Gate D-IC : Gate In Panel
Total 158.0 W (Typ.)
(Logic=9.0 W with T-CON, Backlight=149W @ with Inverter Iout duty : 100%)
Ver.1.2
4 /41
LC420WUH
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
Parameter Symbol
Logic Power Voltage VCC -0.5 +4.0 VDC
Gate High Voltage VGH +18.0 +30.0 VDC
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
BL Operating Input Voltage
(One Side)
Panel Front Temperature TSUR - +68 °C 4
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
VBL 600 1150 VRMS
Min Max
Value
Unit Note
1
2,3
Note:
1. Ambient temperature condition (Ta = 25 ± 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℃ 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 ℃ 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
degrade in case of improper thermal management in final product design.
90%
60
60%
Ver.1.2
Wet Bulb
Temperature [°C]
20
10
0
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [°C]
30
40
50
40%
10%
Humidity
[(%)RH]
Storage
Operation
5 /41
LC420WUH
Product Specification
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 GIP.
Table 2. ELECTRICAL CHARACTERISTICS
Parameter Symbol Condition MIN TYP MAX Unit Note
Logic Power Voltage VCC - 3.0 3.3 3.6
Logic High Level Input Voltage VIH 2.7 VCC
Logic Low Level Input Voltage VIL 0 0.6
Source D-IC Analog Voltage VDD - 16.05 16.25 16.45
VDC
VDC
VDC
VDC
Half Source D-IC Analog
Voltage
Gamma Reference Voltage
Common Voltage Vcom - 6.6 6.9 7.2 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
Gate Low Voltage VGL -5.5 -5.3 -5.1 VDC
GIP Bi-Scan Voltage
GIP Refresh Voltage
GIP Start Pulse Voltage VST - VGL - VGH V
GIP Operating Clock GCLK - VGL - VGH V
Total Power Current
Total Power Consumption
Note:
1. The specified current and power consumption are under the VLCD=12V., 25 ± 2°C, fV=120Hz
H_VDD - 7.9 8.00 8.1
V
GMH
V
GML
VIB
ΔVIB 0.8 V
VID 150 800 mV
ΔVID 25 800 mV
VGI_P
VGI_N
VGH
even/odd
ILCD - 525 750 975 mA 2
PLCD - 9.0 Watt 2
(GMA1 ~ GMA9) ½*VDD VDD-0.2
(GMA10 ~ GMA18) 0.2 ½*VDD
(VCC-1.2)
− VID / 2
27.99 @ 25℃
29.45 @ 0℃
Mini-LVDS Clock
and Data
- VGL - VGH VDC
- VGL - VGH V
0.7 + (VID/2)
27.39 @ 25℃
28.85 @ 0℃
27.69 @ 25℃
29.15 @ 0℃
VDC
V
VDC
condition whereas mosaic pattern(8 x 6) is displayed and fVis the frame frequency.
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
5
Ver.1.2
6 /41
VCM (0V)
VCM (0V)
VCM (0V) VCM (0V)
VGH
VGHM
GND
VGL
VID
VID
VIDVID
Product Specification
Without GPM With GPM
FIG. 1 Gate Output Wave form without GPM and with GPM
△△△△VID
VID
VID VID
LC420WUH
△△△△VIB
VIB
VIB VIB
VIB
VIB
VIB VIB
VID
VID
VIDVID
* Differential Probe
* Differential Probe
* Differential Probe* Differential Probe
△△△△VID
VID
VID VID
* Active Probe
* Active Probe
* Active Probe* Active Probe
FIG. 2 Description of VID, ΔΔΔΔVIB, ΔΔΔΔVID
*
* Source PCB
Source PCB
* *
Source PCBSource PCB
FIG. 3 Measure point
Ver.1.2
7 /41
Product Specification
Table 3. ELECTRICAL CHARACTERISTICS (Continue)Table 3. ELECTRICAL CHARACTERISTICS (Continue)
Parameter Symbol
Min Typ Max
Backlight Assembly :
LC420WUH
Values
Unit Note
Operating Voltage
(one side,fBL=63KHz, IBL= 136 mA
RMS
VBL1 - 1000 -
)
VBL2 - 1000 -
V
RMS
IBL1 - 68 -
Operating Current (one side)
mA
RMS
IBL2 - 68 -
Striking Voltage @ 0℃
(Open Lamp Voltage @ one side)
VS - - 1110 V
RMS
Operating Frequency fBL 61 63 65 kHz 4
Striking Time S TIME 1.5 - - sec 3
Power Consumption PBL 149 Watt 6
Burst Dimming Duty {a/T} * 100 20 100 % 9
Burst Dimming Frequency
Parameter Symbol
PAL
NTSC 120
1/T
100
Values
Hz 9
Unit Note
Min Typ Max
Lamp : (APPENDIX-V)
Lamp Voltage (one side) VLAMP 815 1100 1135 V
Lamp Current (one side) ILAMP 3.0 8.5 9.0 mA
RMS
RMS
Discharge Stabilization Time TS - - 3 Min 5
Lamp Frequency f LAMP 661 63 65 KHz
Established Starting Voltage @ 0℃ VS 1110 V
RMS
Life Time 50,000 60,000 Hrs 7
1, 2
1
1, 3
2
3
Ver.1.2
8 /41
LC420WUH
Product Specification
Note : The design of the inverter must have specifications for the lamp in LCD Assembly.
The electrical characteristics of inverter are based on High-High Driving type.
The performance of the lamps in LCM, for example life time or brightness, is extremely influenced by
the characteristics of the DC-AC inverter. So, all the parameters of an inverter should be carefully
designed so as not to produce too much leakage current from high-voltage output of the inverter.
When you design or order the inverter, please make sure unwanted lighting caused by the mismatch
of the lamp and the inverter (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.
※ Do not attach a conductive tape to lamp connecting wire.
If you attach conductive tape to the lamp wire, not only luminance level can be lower than typical one
but also inverter operate abnormally on account of leakage current which is generated between lamp wire
and conductive tape.
1. Specified values are defined for a Backlight Assembly.
( SCAN Block1 IBL:8 lamps, 8.5mA/Lamp and SCAN Block2 IBL:8 lamps, 8.5mA/Lamp )
and each value is measured at duty 100%.
The lamp voltage must be synchronized between Block1 and Block2.
(The frequency and phase must be the same)
2. Operating voltage is measured at 25 ± 2°C(after 2hr.aging). The variance range for operating voltage
is ± 10%.
3. The Striking Voltage (Open Lamp Voltage) [ Vopen ] should be applied to the lamps more than Striking
time (S TIME) for start-up. Inverter Striking Voltage must be more than Established Starting Voltage of lamp.
Otherwise, the lamps may not be turned on. The used lamp current is typical value.
When the Striking Frequency is higher than the Operating Frequency, the parasitic capacitance
can cause inverter shut down, therefore It is recommended to check it.
Ver.1.2
Vs = (Vpk-pk) / [ 2*root(2)]
9 /41
LC420WUH
Product Specification
4. Lamp frequency may produce interference with horizontal synchronous frequency. As a result this may
cause beat on the display. Therefore, lamp frequency shall be away as much as possible from the
horizontal synchronous frequency and its harmonics range in order to prevent interference.
There is no reliability problem of lamp, if the operation frequency is typ ± 5KHz. But it should be applied
in less than ABSOLUTE MAXIMUM RATINGS max voltage
5. The brightness of the lamp after lighted for 5minutes is defined as 100%.
TSis 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.
6. Maximum level of power consumption is measured at initial turn on.
Typical level of power consumption is measured after 2hrs aging at 25 ± 2°C.(@I out duty : 100%)
7. The life time is determined as the time at which brightness of the lamp is 50% compared to that of initial
value at the typical lamp current on condition of continuous operating at 25 ± 2°C, based on duty 100%.
8.The output of the inverter must have symmetrical(negative and positive) voltage and current waveform
(Unsymmetrical ratio is less than 10%). Please do not use the inverter which has not only unsymmetrical
voltage and current but also spike wave.
Requirements for a system inverter design, which is intended to achieve better display performance,
power efficiency and more reliable lamp characteristics.
It can help increase the lamp lifetime and reduce leakage current.
a. The asymmetry rate of the inverter waveform should be less than 10%.
b. The distortion rate of the waveform should be within √2 ±10%.
* Inverter output waveform had better be more similar to ideal sine wave.
I p
I -p
* Asymmetry rate:
| I p– I –p| / I
RMS
* Distortion rate
I p(or I –p) / I
RMS
x 100%
Ver.1.2
10 /41
Product Specification
9. The reference method of burst dimming duty ratio.
SCAN_Block1 or
SCAN_Block2
Output of Inverter to Lamp
LC420WUH
T
A
+3.3V TTL
I-out
90%
Point A
SCAN Block1 or SCAN Block2 PWM duty ={ A/T } * 100
Point A : rising time 90% of Iout point .
Point B : falling starting point .
I out duty = { a/T } * 100
SCAN Block1 or SCAN Block2 Frequency = 1/T
※ We recommend not to be much different between SCAN BLK 1 or SCAN BLK2 duty and Iout duty .
※ Dimming current output rising and falling time may produce humming and inverter trans’ sound noise.
※ Burst dimming duty should be 100% for more than 1second after turn on.
※ Equipment
Oscilloscope :TDS3054B(Tektronix)
Current Probe : P6022 AC (Tektronix)
High Voltage Probe: P5100(Tektronix)
10. The Cable between the backlight connector and its inverter power supply should be connected directly
with a minimized length. The longer cable between the backlight and the inverter may cause the lower
luminance of lamp and may require more higher starting voltage ( Vs ).
a
Point B
11. The operating current must be measured as near as backlight assembly input.
12. The operating current unbalance between left and right side for each scanning block must be under 10%
of Typical current.
│Left(Master) current – Right(Slave) Current│ 〈 10% of typical current
Ver.1.2
11 /41
LC420WUH
Product Specification
3-2. Interface Connections
This LCD module employs two kinds of interface connection, two 60-pin FFC connector are used for the
module electronics and two 3-pin Balance PCB connectors are used for the integral backlight system.
3-2-1. LCD Module
-LCD Connector (CN1): TF06L-60S-0.5SH (Manufactured by HRS) or Equivalent
Table 4-1. MODULE CONNECTOR(CN1) PIN CONFIGURATION
Table 4-1. MODULE CONNECTOR(CN1) PIN CONFIGURATION
DescriptionSymbolNoDescriptionSymbolNo
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
LTD OUTPUTLTD_OUT2
3
4
5
6
7
8
9
48GroundGND
49Driver Power Supply VoltageVDD
50Driver Power Supply VoltageVDD
51Half Driver Power Supply VoltageH_VDD
52Half Driver Power Supply VoltageH_VDD
53GroundGND
54Logic Power Supply VoltageVCC
55Logic Power Supply VoltageVCC
56GroundGND
57Left Mini LVDS Receiver Signal(5-) LLV5 -
58Left Mini LVDS Receiver Signal(5+) LLV5 +
59Left Mini LVDS Receiver Signal(4-) LLV4 -
Left Mini LVDS Receiver Signal(3-) LLV3 -31GroundGND
Left Mini LVDS Receiver Signal(3+) LLV3 +32
Left Mini LVDS Receiver Clock Signal(-) LCLK -33GIP GATE Clock 1GCLK1
Left Mini LVDS Receiver Clock Signal(+) LCLK +34GIP GATE Clock 2GCLK2
Left Mini LVDS Receiver Signal(2-) LLV2 -35GIP GATE Clock 3GCLK3
Left Mini LVDS Receiver Signal(2+) LLV2 +36GIP GATE Clock 4GCLK4
Left Mini LVDS Receiver Signal(1-) LLV1 -37GIP GATE Clock 5GCLK5
Left Mini LVDS Receiver Signal(1+) LLV1 +38GIP GATE Clock 6GCLK6
Left Mini LVDS Receiver Signal(0-) LLV0 -39VGLVGI_N
Left Mini LVDS Receiver Signal(0+) LLV0 +40VGHVGI_P
GroundGND41GIP Panel VDD for Odd GATE TFTVGH_ODD
Source Output Enable SIGNALSOE42GIP Panel VDD for Even GATE TFTVGH_EVEN
Polarity Control SignalPOL43GATE Low VoltageVGL
GATE Start PulseGSP44VERTICAL START PULSEVST
"H“ H 2dot Inversion/ "L" H 1dot InversionH_CONV45GroundGND
“H” Normal DisplayOPT_N46VCOM Left Feed-Back OutputVCOM_L_FB
GroundGND47VCOM Left InputVCOM_L
GAMMA VOLTAGE 18 (Output From LCD)GMA 18
GAMMA VOLTAGE 16GMA 16
GAMMA VOLTAGE 15GMA 15
GAMMA VOLTAGE 14GMA 14
GAMMA VOLTAGE 12GMA 12
GAMMA VOLTAGE 10 (Output From LCD)GMA 10
GAMMA VOLTAGE 9 (Output From LCD)GMA 9
GAMMA VOLTAGE 7GMA 7
GAMMA VOLTAGE 5GMA 5
GAMMA VOLTAGE 4GMA 4
GAMMA VOLTAGE 3GMA 3
GAMMA VOLTAGE 1(Output From LCD)GMA 1
No ConnectionNC60Left Mini LVDS Receiver Signal(4+) LLV4 +
Note :
1. Please refer to application note (Half VDD & Gamma Voltage setting & Control signal) for details.
2. These 'input signal' (OPT_N,H_CONV) should be connected
Ver.1.2
12 /41
Product Specification
-LCD Connector (CN2): TF06L-60S-0.5SH(Manufactured by HRS) or Equivalent
Table 4-2. MODULE CONNECTOR(CN2) PIN CONFIGURATION
LC420WUH
DescriptionSymbolNoDescriptionSymbolNo
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
GAMMA VOLTAGE 1 (Output From LCD)GMA 12
GAMMA VOLTAGE 3GMA 33
GAMMA VOLTAGE 4GMA 44
GAMMA VOLTAGE 5GMA 55
GAMMA VOLTAGE 7GMA 76
GAMMA VOLTAGE 9 (Output From LCD)GMA 97
GAMMA VOLTAGE 10 (Output From LCD)GMA 108
GAMMA VOLTAGE 12GMA 129
GAMMA VOLTAGE 14GMA 1410
GAMMA VOLTAGE 15GMA 1511
GAMMA VOLTAGE 16GMA 1612
GAMMA VOLTAGE 18 (Output From LCD)GMA 1813
39
40
47GATE Start PulseGSP
49Source Output Enable SIGNALSOE
50GroundGND
53Right Mini LVDS Receiver Signal(4-) RLV4 -
54Right Mini LVDS Receiver Signal(4+) RLV4 +
55Right Mini LVDS Receiver Signal(3-) RLV3 -
56Right Mini LVDS Receiver Signal(3+) RLV3 +
57Right Mini LVDS Receiver Clock Signal(-) RCLK -
58Right Mini LVDS Receiver Clock Signal(+) RCLK +
59Right Mini LVDS Receiver Signal(2-) RLV2 -
Right Mini LVDS Receiver Signal(1-) RLV1 -31No ConnectionNC
Right Mini LVDS Receiver Signal(1+) RLV1 +32
Right Mini LVDS Receiver Signal(0-) RLV0 -33
Right Mini LVDS Receiver Signal(0+) RLV0 +34
GroundGND35
Logic Power Supply VoltageVCC36
Logic Power Supply VoltageVCC37
GroundGND38
Half Driver Power Supply VoltageH_VDD
Half Driver Power Supply VoltageH_VDD
Driver Power Supply VoltageVDD41
Driver Power Supply VoltageVDD42
GroundGND43
VCOM Right InputVCOM_R44GroundGND
VCOM Right Feed-Back OutputVCOM_R_FB45“H” Normal DisplayOPT_N
GroundGND46"H“ H 2dot Inversion/ "L" H 1dot InversionH_CONV
VERTICAL START PULSEVST
GATE Low VoltageVGL48Polarity Control SignalPOL
GIP Panel VDD for Even GATE TFTVGH_EVEN
GIP Panel VDD for Odd GATE TFTVGH_ODD
VGHVGI_P51Right Mini LVDS Receiver Signal(5-) RLV5 -
VGLVGI_N52Right Mini LVDS Receiver Signal(5+) RLV5 +
GIP GATE Clock 6GCLK6
GIP GATE Clock 5GCLK5
GIP GATE Clock 4GCLK4
GIP GATE Clock 3GCLK3
GIP GATE Clock 2GCLK2
GIP GATE Clock 1GCLK1
LTD OUTPUTLTD_OUT
GroundGND60Right Mini LVDS Receiver Signal(2+) RLV2 +
Note :
1.Please refer to application note (Half VDD & Gamma Voltage setting & Control signal) for details.
2. These 'input signal' (OPT_N,H_CONV) should be connected
Source Right PCB
Ver.1.2
CN 2
#1 #60
CN 1
Source Left PCB
#1 #60
13 /41
3-2-2. Backlight Module
LC420WUH
Product Specification
[ Master ]
1) Balance Connector
: 65002WS-03 (manufactured by YEONHO) or equivalent
2) Mating Connector
: 65002HS-03 (manufactured by YEONHO) or equivalent.
[ Slave ]
1) Balance Connector
: 65002WS-03 (manufactured by YEONHO) or equivalent
2) Mating Connector
: 65002HS-03 (manufactured by YEONHO) or equivalent.
Table 5. BACKLIGHT CONNECTOR PIN CONFIGURATION(CN2,CN3)
Master Slave
No Symbol
Scanning BLK1 Scanning BLK2 Scanning BLK1 Scanning BLK2
1 H_Input High_Input High_Input
2 H_Input High_Input High_Input
3 FB NC NC
◆◆◆◆ Rear view of LCM
Note
[Master]
Ver.1.2
[Slave]
123
1
2 3
123
1
2 3
[Master]
[Slave]
14 /41
3-3. Signal Timing Specifications
Table 6. Timing Requirements
Parameter Symbol Condition Min Typ Max Unit Note
LC420WUH
Product Specification
Mini Clock pulse period
Mini Clock pulse low period
Mini Clock pulse high period
Mini Data setup time
Mini Data hold time
Reset low to SOE rising time
SOE to Reset input time
Receiver off to SOE timing
POL signal to SOE setup time
POL signal to SOE hold time
Reset High Period
SOE signal GSP setup time
SOE signal GSP Hold time
SOE signal Pulse Width
Note :
1. mini-LVDS timing measure conditions:
: 268 MHz < Clock Frequency <312 MHz , 150mV < VID < 800mV @ 3.0< VCC <3.3
2. Setup time and hold time should be satisfied at the same time
T1
T2
T3
T6
T7
T8
T9
T10
T11
T12
T13
T14
T15
T16
3.2 3.4 ns
1.6 - - ns
1.6 - - ns
0.60 - - ns
0.60 - - ns
0 - - ns
200 - - ns
10 - -
-5 - - ns
6 - - ns
3
100 ns
100 ns
200 ns
CLK
cycle
CLK
cycle
1
Ver.1.2
CLK-
CLK+
LV0+, -
to
LV5+,-
T1
70%
T7
T2
T5
70%
30%
T5
30%
30%
30%
T4
70%
T4
T6 T7
50%
T3
T6
FIG 4. Source D-IC Input Data Latch Timing Waveform
70%
VDIFF
VDIFF
15 /41
Product Specification
LC420WUH
CLK+
LV0+,-
LV1+,-
to
LV5+,-
SOE
Read The Reset=H
Read The Reset=L 1stDATA
T1
T2
T3
NA
R=H R=H R=H NAR=L R=L NA D D DR=L DD
T13
NA
T8
70%
30%
NA NA NA NANA NA NA D D DNA DD
T9
FIG 5-1. Input Data Timing for 1stSource D-IC Chip
Last DATA
Ver.1.2
CLK+
LV0+,-
LV1+,-
to
LV5+,-
SOE
(480)
D D D
D D D
(481)
NA NA NA NA NA R=LNA R=L R=L
NA NA NA NA NA NANA NA NA
T10
FIG 5-2. Last Data Latch to SOE Timing
T8
70%
30%
16 /41
Product Specification
LC420WUH
SOE
POL
GSP
GSP
70%
T16
T14
T11
70%
30%
30%
70%
T15
T12
70%
30%
70%
30%
70%
Ver.1.2
SOE
1stline data 1stline output
FIG 6. POL, GSP and SOE Timing Waveform
17 /41
Product Specification
3-4. Data Mapping and Timing
Display data and control signal (RESET) are input to LV0 to LV5.
3-4-1. Control signal input mode
CLK +
LC420WUH
LV0 +
RESET RESET RESET RESET RESET RESET RESET RESET RESET RESET
3-4-2. Display data input mode
CLK+
LV0+
LV1+
LV2+
LV3+
LV4+
LV5+
Note :
1. For data mapping, please refer to panel pixel structure Fig.8
D01 D02 D03 D04 D05 D06D00
D11 D12 D13 D14 D15 D16D10 D17
D21 D22 D23 D24 D25 D26D20 D27
D31 D32 D33 D34 D35 D36D30 D37
D41 D42 D43 D44 D45 D46D40 D47
D51 D52 D53 D54 D55 D56D50 D57
DATA INPUT CYCLE
D07 D00
Fig. 7 Mini-LVDS Data
D10
D20
D30
D40
D50
Ver.1.2
18 /41
3-5. Panel Pixel Structure
D1 D2 D3 D4 D5 D5758 D5759 D5760 D5761
G1
G2
G3
G4
G5
G6
LC420WUH
Product Specification
G1078
G1079
G1080
FIG. 8 Panel Pixel Structure
Ver.1.2
19 /41
3-6. Power Sequence
3-6-1. LCD Driving circuit
Power Supply For LCD VCC
Power Supply For LCD
VDD, HVDD, VGH
Gamma Ref Voltage
Power Supply For LCD
VGL
0V
0V
70%
Product Specification
VGH
50%
T1
T2
100%
90%
LC420WUH
30% 30%
T7
T3
T8
T4
T5
T6
..
..
..
T6’
Lamp on
GIP Signal For LCD
Power For Lamp
VGH
even/Odd
VST
GCLK1~6
Table 7. POWER SEQUENCE
Parameter
T1 0.5 - ms
T3 0
T4 10
T5 0 - ms
Min Typ Max
0.5T2
20T6 / T6’
Value
Unit Notes
-
-
-
ms
ms
ms 2
ms-
s-2T7
s12-T8
Note : 1. Power sequence for Source D-IC must be kept. ※ Please refer to Appendix IV-1 for more details.
2. VGH Odd signal should be started “High” status and VGH even & odd can not be “High at the
same time.
3. Power Off Sequence order is reverse of Power On Condition including Source D-IC.
4. GCLK On/Off Sequence : GCLK4 GCLK5 GCLK6 GCLK1 GCLK2 GCLK3.
5, VDD Odd/Even transition time should be within V blank.
Ver.1.2
20 /41
LC420WUH
Product Specification
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 Φ and θ equal to 0 °.
It is presented additional information concerning the measurement equipment and method in FIG. 9.
Optical Stage (x,y)
LCD Module
Pritchard 880 or
equivalent
50cm
FIG. 9 Optical Characteristic Measurement Equipment and Method
Table 8. OPTICAL CHARACTERISTICS
Parameter Symbol
Dclk=74.25MHz, I
Value
Min Typ Max
Contrast Ratio CR 1100 1450 - 1
Ta= 25±2°C, V
Surface Luminance, white L
Luminance Variation δ
Response Time
Rising Tr -
Falling Tf -
WHITE
RED
Color Coordinates
GREEN
[CIE1931]
BLUE
WHITE
WH
5P - - 1.3 3
Rx
Ry 0.335
Gx 0.291
Gy 0.603
Bx 0.146
By 0.061
Wx 0.279
Wy 0.292
400 500 - cd/m
0.636
Typ
-0.03
Color Temperature 10,000 K
Color Gamut 72 %
Viewing Angle (CR>10)
x axis, right(φ=0°) θr 89 - x axis, left (φ=180°) θl 89 - y axis, up (φ=90°) θu 89 - y axis, down (φ=270°) θd 89 - -
Gray Scale - - - 6
=12.0V, VDD,H_VDD,VGH,VGL=typ, fV=120Hz,
LCD
=68 mA
BL1
RMS
, I
BL2
=68 mA
I out Duty = 100%
RMS,
Unit Note
2
8 12
ms 4
10 14
Typ
+0.03
degree 5
2
Ver.1.2
21 /41
Product Specification
Note :
1. Contrast Ratio(CR) is defined mathematically as :
CR =
It is measured at center 1-point.
2. Surface luminance is determined after the unit has been ‘ON’ and 1Hour 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. 10.
3. The variation in surface luminance , δ WHITE is defined as :
δ WHITE(5P) = Maximum(L
Where L
For more information, see the FIG. 10.
4. Response time is the time required for the display to transit from G(255) to G(0) (Rise Time, TrR)
and from G(0) to G(255) (Decay Time, TrD).
5. Viewing angle is the angle at which the contrast ratio is greater than 10. The angles are
determined for the horizontal or x axis and the vertical or y axis with respect to the z axis which
is normal to the LCD module surface. For more information, see the FIG. 12.
Surface Luminance at all white pixels
Surface Luminance at all black pixels
on1,Lon2
on1
to L
are the luminance with all pixels displaying white at 5 locations .
on5
, L
on3
, L
on4
, L
) / Minimum(L
on5
on1,Lon2
, L
on3
, L
on4
, L
LC420WUH
)
on5
6. Gray scale specification
Gamma Value is approximately 2.2. For more information, see the Table 9.
Table 9. GRAY SCALE SPECIFICATION
Gray Level Luminance [%] (Typ)
L0 0.067
L15 0.27
L31 1.04
L47 2.49
L63 4.68
L79 7.66
L95 11.5
L111 16.1
L127 21.6
L143 28.1
L159 35.4
L175 43.7
L191 53.0
L207 63.2
L223 74.5
L239 86.7
L255 100
Positive
Voltage
Negative
Voltage
Gray Level Gamma Ref.
L0 Gamma9
L1 Gamma8
L31 Gamma7
L63 Gamma6
L127 Gamma5
L191 Gamma4
L223 Gamma3
L255 Gamma1
L255 Gamma18
L223 Gamma16
L191 Gamma15
L127 Gamma14
L63 Gamma13
L31 Gamma12
L1 Gamma11
L0 Gamma10
Ver.1.2
22 /41
Product Specification
Measuring point for surface luminance & luminance variation
H
A
LC420WUH
③③③③②②②②
V
①①①①
B
A : H / 4 mm
④④④④
FIG.10 5 Points for Luminance Measure
Response time is defined as the following figure and shall be measured by switching the input signal for
“Gray(N)” and “Gray(M)”.
TrR
100
90
⑤⑤⑤⑤
TrD
B : V / 4 mm
@ H,V : Active Area
Ver.1.2
Optical
Response
10
0
Gray (N)
N,M = Black ~ White, N<M
FIG.11 Response Time
Gray(M)
Gray(N)
23 /41
Dimension of viewing angle range
LC420WUH
Product Specification
φ
= 180°, Left
φ
= 270°, Down
Normal
θ
φ
FIG.12 Viewing Angle
E
Y
φ
= 90°, Up
φ
= 0°, Right
Ver.1.2
24 /41
Product Specification
5. Mechanical Characteristics
Table 10 provides general mechanical characteristics.
Table 10. MECHANICAL CHARACTERISTICS
Item Value
Horizontal 983.0 mm
LC420WUH
Outline Dimension
Bezel Area
Active Display Area
Weight 8.7 Kg (Typ.) , 9.6Kg (Max.)
Vertical 576.0 mm
Depth 35.5 mm
Horizontal 939.0 mm
Vertical 531.0 mm
Horizontal 930.24 mm
Vertical 523.26 mm
Note : Please refer to a mechanical drawing in terms of tolerance at the next page.
Ver.1.2
25 /41
[ FRONT VIEW ]
LC420WUH
Product Specification
Ver.1.2
26 /41
[ REAR VIEW ]
LC420WUH
Product Specification
Ver.1.2
27 /41
Product Specification
6. Reliability
Table 11. 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
Bandwidth : 10-300Hz
Duration : X,Y,Z, 30 min
Each direction per 10 min
Shock level : 50Grms
Waveform : half sine wave, 11ms
Direction : ±X, ±Y, ±Z
One time each direction
5
6
Vibration test
(non-operating)
Shock test
(non-operating)
LC420WUH
7 Humidity condition Operation Ta= 40 °C ,90%RH
Altitude operating
8
storage / shipment
0 - 15,000 ft
0 - 40,000 ft
Note : Before and after Reliability test, LCM should be operated with normal function.
Ver.1.2
28 /41
Product Specification
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.
7-2. Environment
a) RoHS, Directive 2002/95/EC of the European Parliament and of the council of 27 January 2003
LC420WUH
Ver.1.2
29 /41
8. Packing
8-1. Information of LCM Label
a) Lot Mark
A B C D E F G H I J K L M
A,B,C : SIZE(INCH) D : YEAR
E : MONTH F ~ M : SERIAL NO.
Note
1. YEAR
Year
Product Specification
200320022001
200452005
2006720078200892009
LC420WUH
2010
Mark
321
4
6
2. MONTH
Month
Mark
Apr5May
4
Jun7Jul8Aug9Sep
6
b) Location of Lot Mark
Serial NO. is printed on the label. The label is attached to the backside of the LCD module.
This is subject to change without prior notice.
8-2. Packing Form
a) Package quantity in one Pallet : 13 pcs
b) Pallet Size : 1150 mm X 1020 mm X 815 mm.
0
Oct
A
Nov
B
DecMarFebJan
C421
Ver.1.2
30 /41
LC420WUH
Product Specification
9. Precautions
Please pay attention to the followings when you use this TFT LCD module.
9-1. Mounting Precautions
(1) You must mount a module using specified mounting holes (Details refer to the drawings).
(2) You should consider the mounting structure so that uneven force (ex. Twisted stress) is not applied to the
module. And the case on which a module is mounted should have sufficient strength so that external
force is not transmitted directly to the module.
(3) Please attach the surface transparent protective plate to the surface in order to protect the polarizer.
Transparent protective plate should have sufficient strength in order to the resist external force.
(4) You should adopt radiation structure to satisfy the temperature specification.
(5) Acetic acid type and chlorine type materials for the cover case are not desirable because the former
generates corrosive gas of attacking the polarizer at high temperature and the latter causes circuit break
by electro-chemical reaction.
(6) Do not touch, push or rub the exposed polarizers with glass, tweezers or anything harder than HB
pencil lead. And please do not rub with dust clothes with chemical treatment.
Do not touch the surface of polarizer for bare hand or greasy cloth.(Some cosmetics are detrimental
to the polarizer.)
(7) When the surface becomes dusty, please wipe gently with absorbent cotton or other soft materials like
chamois soaks with petroleum benzine. Normal-hexane is recommended for cleaning the adhesives
used to attach front / rear polarizers. Do not use acetone, toluene and alcohol because they cause
chemical damage to the polarizer.
(8) Wipe off saliva or water drops as soon as possible. Their long time contact with polarizer causes
deformations and color fading.
(9) Do not open the case because inside circuits do not have sufficient strength.
9-2. Operating Precautions
(1) The spike noise causes the mis-operation of circuits. It should be lower than following voltage :
V=±200mV(Over and under shoot voltage)
(2) Response time depends on the temperature.(In lower temperature, it becomes longer.)
(3) Brightness depends on the temperature. (In lower temperature, it becomes lower.)
And in lower temperature, response time(required time that brightness is stable after turned on)
becomes longer
(4) Be careful for condensation at sudden temperature change.Condensation makes damage to polarizer or
electrical contacted parts. And after fading condensation, smear or spot will occur.
(5) When fixed patterns are displayed for a long time, remnant image is likely to occur.
(6) Module has high frequency circuits. Sufficient suppression to the electromagnetic interference shall be
done by system manufacturers. Grounding and shielding methods may be important to minimized the
interference.
(7) Please do not give any mechanical and/or acoustical impact to LCM. Otherwise, LCM can’t be operated
its full characteristics perfectly.
(8) A screw which is fastened up the steels should be a machine screw.
(if not, it can causes conductive particles and deal LCM a fatal blow)
(9) Please do not set LCD on its edge.
(10) The conductive material and signal cables are kept away from transformers to prevent abnormal display,
sound noise and temperature rising.
(11) Partial darkness may happen during 3~5 minutes when LCM is operated initially in condition that
luminance is under 40% at low temperature (under 5℃). This phenomenon which disappears naturally
after 3~5 minutes is not a problem about reliability but LCD characteristic.
Ver.1.2
31 /41
LC420WUH
Product Specification
(12) Partial darkness may happen under the long-term operation of any dimming without power on/off.
This phenomenon which disappears naturally after 5 minutes is not a problem about reliability but
LCD characteristics.
9-3. Electrostatic Discharge Control
Since a module is composed of electronic circuits, it is not strong to electrostatic discharge. Make certain that
treatment persons are connected to ground through wrist band etc. And don’t touch interface pin directly.
9-4. Precautions for Strong Light Exposure
Strong light exposure causes degradation of polarizer and color filter.
9-5. Storage
When storing modules as spares for a long time, the following precautions are necessary.
(1) Store them in a dark place. Do not expose the module to sunlight or fluorescent light. Keep the temperature
between 5°C and 35°C at normal humidity.
(2) The polarizer surface should not come in contact with any other object.
It is recommended that they be stored in the container in which they were shipped.
9-6. Handling Precautions for Protection Film
(1) The protection film is attached to the bezel with a small masking tape.
When the protection film is peeled off, static electricity is generated between the film and polarizer.
This should be peeled off slowly and carefully by people who are electrically grounded and with well ionblown equipment or in such a condition, etc.
(2) When the module with protection film attached is stored for a long time, sometimes there remains a very
small amount of glue still on the bezel after the protection film is peeled off.
(3) You can remove the glue easily. When the glue remains on the bezel surface or its vestige is recognized,
please wipe them off with absorbent cotton waste or other soft material like chamois soaked with normalhexane.
Ver.1.2
32 /41
# APPENDIX-I
■■■■ LC420WUH-SCM1 – Pallet Ass’y
LC420WUH
Product Specification
Ver.1.2
MATERIALDESCRIPTIONNO.
LCD Module1
42INCHBAG2
MASKING 20MM X 50MTAPE3
Plywood (1140X990X125.5)PALLET4
PACKING EPS5
ANGLE PACKING7
ANGLE COVER8
BAND,CLIP9
PACKING
BAND10
LABEL11
YUPO PAPER 80G 100X100
6
EPS
PAPER
PAPER
STEEL
PP
33 /41
# APPENDIX- II
■ LC420WUH-SCM1-LCM Label
LC420WUH
Product Specification
Model
UL, TUV Mark
LC420WUH
LC420WUH
LC420WUHLC420WUH
(SC)(M1)
(SC)(M1)
(SC)(M1)(SC)(M1)
Serial No.
LGD Logo
US PATENT No. Origin
■■■■ Serial No. (See CAS 30 page for more information)
1 2 3 4 5 6 7 9 10 11 12
Year
Inch
Month
8
13
Serial No.
Ver.1.2
M Ass’y Factory code
34 /41
# APPENDIX- ⅢⅢⅢⅢ
■ LC420WUH-SCM1-Pallet Label
LC420WUH
SCM1
LC420WUH
Product Specification
13 PCS
MADE IN KOREA RoHS Verified
XXXXX XXXXXXXX XXX XXX XXXX
001/01-01
Ver.1.2
35 /41
LC420WUH
Product Specification
# APPENDIX- IV-1
■ Mega DCR Using Condition (1)
● After Inverter ON, Output current max duty should be sustained during 1sec.
●The Deep Dimming means using the output current duty less than 20% duty.
The deep dimming must be used very carefully due to limitation of lamp characteristics and specification.
1) For stable lamp on, its duty condition should follow below the condition.
After Inverter ON signal, T0 duration should be sustained.
Output current
Output current
Output currentOutput current
T0 = Min 1 [sec]
Inverter ON signal
Inverter ON signal
Inverter ON signalInverter ON signal
Max duty Duty (20% ~ Max duty)
LAMP ON
LAMP ON
LAMP ONLAMP ON
Min 3[min]
2) B/L may not satisfy some of LCM specification at the Deep Dimming.
- Duration : The Deep Dimming must be limited within 10 minutes.
- Ratio : The operation time of the Deep Dimming must be less than 1/5 time of the Normal
Duty(20%~Max duty) operation in a certain period to prevent unwanted operation.
- FOS : Partial darkness or darkness of center area during the low duty might be happened due to
insufficient lamp current.
- Warm up : Normal Duty(20%~Max duty) must be used 3 min after the lamps “ON”. In case of low
temperature, more warm up time may be needed.
Ver.1.2
36 /41
# APPENDIX- IV-2
■ Mega DCR Using Condition (2)
Output current
LC420WUH
Product Specification
T0
Parameter
Min Typ Max
T1 3 - - min Output current Duty[20%~Max duty]
T2 - - 10 min Output current Duty[0~20%]
T3 T2 x 5 - - min Output current Duty[20%~Max duty]
T2 T3T1 T2
Value
Unit Condition
3) The output current duty may not be same as input PWM duty due to rise/fall time of output.
4) Following the recommended conditions as aforementioned, there is no difference of lamp
lifetime between conventional method and new one.
Ver.1.2
37 /41
Product Specification
# APPENDIX- V-1
■
LC420WUH-SCM1-Source D-IC Power Sequence
-. Logic level Input Signal : SOE, POL, GSP, H_CONV, OPT_N
LC420WUH
Ver.1.2
38 /41
Product Specification
# APPENDIX- V-2
■ Blue LED On Time
This is only the reference data of Blue LED on Time for LC420WUH-SCA1 model.
1. Model : LC420WUH-SCA1
2. Test condition : VCC = 3.3V
3. Sample Size : 10pcs
90%
10%
0VVCC
LED on Time (TON)
LC420WUH
Blue LED
4. Current Status
Sample #1 #2 #3 #4 #5 Min Max Avg.
LED on Time
(TON)
LED on Time
(TON)
Blue LED on
0V
T8
50%
Lamp ON
6.8s 8.8s 7.2s 7.4s 8.0s
8.4s 8.1s 8.0s 7.3s 7.0s
6.8s 8.4s 7.7sSample #6 #7 #8 #9 #10
Ver.1.2
39 /41
# APPENDIX- V
■ Lamp Electrical Spec
Item Uint Standards(Hi-Hi) Remark
LC420WUH
Product Specification
1,630±7%, IL=3.0 mA
1 Lamp Voltage (VL) Vrms
2 Lamp Current (IL) mArms
3 Lamp Power (VL×IL) W
4 Starting Voltage (Vs) Vrms 2,220 Max Ta=0℃
5 Operating Frequency kHz 63kHz
6 Life Time Hrs Min. 50,000 ( at 9.0mA)
7
Discharge
Sec 180
Stabilization Time
2,200±7%, IL=8.5 mA
2,270±7%, IL=9.0 mA
Min 3.0
Typ 8.5
Max 9.5
4.0, IL=3.0mA
10.6, IL=8.5mA
11.3, IL=9.0mA
8
Ver.1.2
Luminance Uniformity
lighted after 60
seconds
% 80 Min
40 /41
Product Specification
+
−
+
−
# APPENDIX- VI
■ Starting (Striking ) Voltage measurement method
※ Measure the high voltage point of Balance Ass’y after removing all lamp.
a) CCFL Cap balance Structure
V
)(
V
)(
s
Lamp open
s
LC420WUH
IO
Vpk-pk
Vs = (Vpk-pk) / [ 2*root(2)]
b) EEFL Structure
)(
V
s
IO
C ballaster
Figure 1 . CCFL Vopen
Lamp open
Tk
C ballaster
IO
※Equipment
1.TDS7254B(Tek.)
2.P6015(Tek.)
V
)(
s
IO
Vpk-pk
Vs = (Vpk-pk) / [ 2*root(2)]
Ver.1.2
※Equipment
1.TDS7254B(Tek.)
2.P6015(Tek.)
Tk
Figure 2 . EEFL Vopen
41 /41
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