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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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LC420EUA
Engineering Specification
-LCD Connector (CN1): TF06L-50S-0.5SH (Manufactured by HRS) or Compatible
Table 3-2. MODULE CONNECTOR(CN2) PIN CONFIGURATION
No Symbol Description No Symbol Description
1 GMA 1 GAMMA VOLTAGE 1 (Output From LCD) 26 GND Ground
2 GMA 3 GAMMA VOLTAGE 3 27 EPI1- EPI Receiver Signal(4-)
3 GMA 4 GAMMA VOLTAGE 4 28 EPI1+ EPI Receiver Signal(4+)
4 GMA 5 GAMMA VOLTAGE 5 29 GND Ground
5 GMA 7 GAMMA VOLTAGE 7 30 H_VDD Half Driver Power Supply Voltage
6 GMA 9 GAMMA VOLTAGE 9 (Output From LCD) 31 VDD Driver Power Supply Voltage
7 GMA 10 GAMMA VOLTAGE 10 (Output From LCD) 32 VDD Driver Power Supply Voltage
8 GMA 12 GAMMA VOLTAGE 12 33 GND Ground
9 GMA 14 GAMMA VOLTAGE 14 34 VCOM_R VCOM Right Input
10 GMA 15 GAMMA VOLTAGE 15 35 VCOM_R_FB VCOM Right Feed-Back Output
11 GMA 16 GAMMA VOLTAGE 16 36 GIP_Reset GIP Reset
12 GMA 18 GAMMA VOLTAGE 18 (Output From LCD) 37 VST VERTICAL START PULSE
13 GND Ground 38 VGL GATE Low Voltage
14 LOCKOUT6 LOCKOUT6 39 VGH_EVEN GIP Panel VDD for Even GATE TFT
15 LOCKIN3 LOCKIN3 40 VGH_ODD GIP Panel VDD for Odd GATE TFT
16 NC No Connection 41 VGI_P GIP Bi-Scan (Normal =VGH Rotate = VGL)
17 VCC Logic & EPI Power Voltage 42 VGI_N GIP Bi-Scan (Normal =VGL Rotate = VGH)
18 GND Ground 43 GCLK6 GIP GATE Clock 6
19 EPI6- EPI Receiver Signal(6-) 44 GCLK5 GIP GATE Clock 5
20 EPI6+ EPI Receiver Signal(6+) 45 GCLK4 GIP GATE Clock 4
21 GND Ground 46
22 GND Ground 47 GCLK2 GIP GATE Clock 2
23 EPI5- EPI Receiver Signal(5-) 48 GCLK1 GIP GATE Clock 1
24 EPI5+ EPI Receiver Signal(5+) 49 NC No Connection
25 GND Ground 50 LTD_OUT LTD OUTPUT
Note :
1. Please refer to application note for details.
GCLK3 GIP GATE Clock 3
(GIP & Half VDD & Gamma Voltage setting)
CN 2
CN 1
Source Right PCB
#1 #50
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Source Left PCB
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3-2-2. Backlight Module
Master
-LED Driver Connector
: 20022WR - H14B2(Yeonho) or compatible
- Mating Connector
: 20022HS - 14B2 or compatible
Table 5-1. LED DRIVER CONNECTOR PIN CONFIGURATION
Pin No Symbol Description Note
1 VBL Power Supply +24.0V
2 VBL Power Supply +24.0V
LC420EUA
3 VBL Power Supply +24.0V
4 VBL Power Supply +24.0V
5 VBL Power Supply +24.0V
6
7
8
9
10
11
12
13 NC Don’t care
14 NC Don’t care
GND
GND
GND
GND
GND
Status
VON/OFF
Backlight Ground
Backlight Ground
Backlight Ground
Backlight Ground
Backlight Ground
Back Light Status 2
Backlight ON/OFF control
Notes :1. GND should be connected to the LCD module’s metal frame.
2. Normal : Low (under 0.7V) / Abnormal : Open
1
ଝ Rear view of LCM
PCB
1
14
1
14
…
…
<Master>
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3-2-2. Backlight Module
LED Driver Connector
: 10031HR-H04L_Black (YEONHO)
Table 5-2. LED DRIVER CONNECTOR PIN CONFIGURATION
Pin No Symbol Description Note
1 GND Ground 1
2 SCAN3 PWM 3
3 SCAN2 PWM 2
LC420EUA
4 SCAN1 PWM 1
Notes :1. GND should be connected to the LCD module’s metal frame.
ଝ Rear view of LCM
PCB
1
4
1
4
…
…
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3-3. Signal Timing Specifications
Table 4. Timing Requirements
Parameter Symbol Condition Min Typ Max Unit Note
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LC420EUA
Engineering Specification
Unit Interval
DLL Lock time
Effective Veye width time
SSC
Receiver off to SOE rising time
SOE pulse width
SOE rising to 1
EPI Bandwidth - 0.607(TBD) - 0.728(TBD) GBPS
st
data time
UI
Tlock
B1&B2
Vspread
tSOE_
Rising
tSOE_
Width
tSOE_
DATA
- 0.59(TBD) - - ns
- 1.6(TBD) - 200(TBD) Us Fig 4
- 0.25(TBD) - - UI Fig. 2
@100KHz - - 2(TBD) %
5(TBD) - - Packet Fig.5
- 4(TBD) - - Packet Fig.5
- 5(TBD) - - Packet Fig.5
FIG 4. SOE Width & Timing
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3-4. Panel Pixel Structure
D1 D2 D3 D4 D5 D1918 D1919 D1920 D1921
G1
G2
G3
G4
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LC420EUA
Engineering Specification
G5
G6
G1078
G1079
G1080
FIG. 6 Panel Pixel Structure
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3-7. Power Sequence
3-7-1. 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%
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Engineering Specification
VGH
T2
50%
100%
T1
90%
LC420EUA
T7
T3
T4
GIP Signal For LCD
VGH
even/Odd
VST
GCLK1~6
Power For LED
Table 9. POWER SEQUENCE
Parameter
1 0.5 - ms
T
2 0.5
T
T
3 0
T
4 10
5 0-ms
T
T
6 / T6’ 20 - ms 6
T
7 2-sec
Min Typ Max
Value
Note : 1. Power sequence for Source D-IC must follow the Case1 & 2.
Ć Please refer to Appendix ċ 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
Normal : GCLK4 Æ GCLK5 Æ GCLK6 Æ GCLK1 Æ GCLK2 Æ GCLK3.
Reverse :GCLK3 Æ GCLK2 ÆGCLK1 Æ GCLK6 Æ GCLK5 Æ GCLK4.
5. VDD_odd/even transition time should be within V_blank
6. In case of T6’, If there is no abnormal display, no problem
T5
T6
-
-
-
..
..
..
T6’
LED on
Ta= 25·2¶C, fV=60Hz
Unit Notes
ms
ms
ms 2
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3-7. Power Sequence
3-7-2. Sequence for LED Driver
Power Supply For LED Driver
VBL
0V
10%
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Engineering Specification
24V (typ.)
90%
LC420EUA
90%
T1 T2
VON/OFF
ExtVBR-B
3-6-3. Dip condition for LED Driver
(Typ.) x 0.8
V
BL
Table 9. Power Sequence for LED Driver
T4 T6
LED ON
T5
T3
V
BL
0 V
: 24V
Parameter
T1 20 - - ms 1
T2 500 - - ms
T3 10 - - ms
T4 0 - - ms
T5 --10ms V
T6 500 - - ms 2
Min Typ Max
Values
Units Remarks
BL
Notes : 1. T1 describes rising time of 0V to 24V and this parameter does not applied at restarting time.
Even though T1 is over the specified value, there is no problem if I
2. In T6 section,
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ExtVBR-B should be sustained from 5% to 100% .
2
T spec of fuse is satisfied.
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LC420EUA
Engineering 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 distance 50cm from the LCD surface at a viewing angle of ) and T equal to 0 ¶.
FIG. 8 shows additional information concerning the measurement equipment and method.
Optical Stage(x,y)
LCD Module
FIG. 8 Optical Characteristic Measurement Equipment and Method
Table 10. OPTICAL CHARACTERISTICS
Parameter Symbol
Contrast Ratio CR
Surface Luminance, white L
Luminance Variation G
Response Time
Color Coordinates
[CIE1931]
Color Temperature
Color Gamut
Viewing
Angle
Gray Scale
2D
(CR>10)
Variation
Gray to Gray (BW)
RED
GREEN
BLUE
WHITE
right(I=0¶)
left (I=180¶)
up (I=90¶)
down (I=270¶)
WH
WHITE
Rising
Falling
Tr (x axis) 89 - -
Tl (x axis) 89 - -
Tu (y axis) 89 - -
Td (y axis) 89 - -
Pritchard 880 or
equivalent
50cm
Ta= 25·2¶C, V
=12.0V, fV=60Hz, Dclk=74.25MHz,
LCD
EXTV
Value
Min Typ Max
1000 1400
2D
5P 1.3 3
Rx
Ry
Gx
Gy
Bx
By
Wx
Wy
290 360
-
-
10 14
0.635
0.341
0.320
Typ
-0.03
0.598
0.154
0.048
0.279
0.292
812
10,000
68
---
-1
Typ
+0.03
BR-B =100%
Unit Note
2
cd/m
ms 4
K
%
degree 6
2
5
7
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Engineering Specification
Note : 1. Contrast Ratio(CR) is defined mathematically as :
LC420EUA
Contrast Ratio =
Surface Luminance with all white pixels
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. 9.
3. The variation in surface luminance , G WHITE is defined as :
G WHITE(5P) = Maximum(L
Where L
on1
to L
are the luminance with all pixels displaying white at 5 locations .
on5
on1,Lon2
on3
on4
) / Minimum(L
on5
on1,Lon2
, L
on3
, L
on4
, L
on5
)
, L
, L
, L
For more information, see the FIG. 9.
4. Response time is the time required for the display to transit from G(N) to G(M) (Rise Time, Tr
and from G(M) to G(N) (Decay Time, Tr
). For additional information see the FIG. 10. (N<M)
D
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. 11.
6. Gray scale specification
Gamma Value is approximately 2.2. For more information, see the Table 11.
)
R
Table 11. GRAY SCALE SPECIFICATION
Gray Level Luminance [%] (Typ)
L0 TBD
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
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ྙ
ྛྚ
ྜྷ
ྜ
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Engineering Specification
Measuring point for surface luminance & measuring point for luminance variation.
H
A
LC420EUA
V
B
A:H/4mm
FIG.9 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
TrD
B:V/4mm
@ H,V : Active Area
Optical
Response
10
0
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Gray(N)
N,M = Black~White, N<M
FIG. 10 Response Time
Gray(M)
Gray(N)
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Dimension of viewing angle range
I
= 180q, Left
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Engineering Specification
Normal
E
T
I
Y
I
= 90q, Up
LC420EUA
I
= 270q, Down
FIG. 11 Viewing Angle
I
= 0q, Right
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5. Mechanical Characteristics
Table 12 provides general mechanical characteristics.
Table 12. MECHANICAL CHARACTERISTICS
Item Value
Horizontal 960.4 mm
LC420EUA
Outline Dimension
Bezel Area
Active Display Area
Weight
Vertical 560.0 mm
Depth 16.2 mm
Horizontal 938.6 mm (*1)
Vertical 531.5 mm
Horizontal 930.24 mm
Vertical 523.26 mm
7.0 Kg (Typ.), 7.4 kg (Max.)
Note : Please refer to a mechanical drawing in terms of tolerance at the next page.
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LC420EUA
Engineering Specification
[ FRONT VIEW ]
Set : Top
Set : Down
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LC420EUA
Engineering Specification
[ REAR VIEW ]
Set : Top
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6. Reliability
Table 13. ENVIRONMENT TEST CONDITION
No. Test Item Condition
LC420EUA
1 High temperature storage test
2 Low temperature storage test
3 High temperature operation test
4 Low temperature operation test
5 Humidity condition Operation
Ta= 60¶C 240h
Ta= -20¶C 240h
Ta= 50¶C 50%RH 240h
Ta= 0¶C 240h
Ta= 40 ¶C ,90%RH
Note : Before and after Reliability test, LCM should be operated with normal function.
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7. International Standards
7-1. LED Array - Safty
1. Laser (LED Backlight) Information
jGXtGslkGw
plj]W_Y\TXGaGYWWX
lGslkGwGOjGXtP
2. Caution
: LED inside.
Class 1M laser (LEDs) radiation when open.
Do not open while operating.
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LC420EUA
Engineering Specification
7-2. Environment
a) RoHS, Directive 2002/95/EC of the European Parliament and of the council of 27 January 2003
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LC420EUA
Engineering Specification
8. Precautions
Please pay attention to the followings when you use this TFT LCD module.
8-1. 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.
8-2. 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 LED driver inductor to prevent abnormal
display, sound noise and temperature rising.
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LC420EUA
Engineering Specification
8-3. 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.
8-4. Precautions for Strong Light Exposure
Strong light exposure causes degradation of polarizer and color filter.
8-5. 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.
(3) Storage condition is guaranteed under packing conditions.
(4) The phase transition of Liquid Crystal could be recovered if the LCM is released at the normal condition
after the low or over the storage temperature.
8-6. 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 ion-
blown 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 normal-
hexane.
9-7. Operating condition guide
(1) The LCD product should be operated under normal conditions. Normal condition is defined as below;
- Temperature : 5 ~ 40 ć
- Display pattern : continually changing pattern (Not stationary)
(2) If the product will be used in extreme conditions such as high temperature, display patterns or operation
time etc..,
It is strongly recommended to contact LGD for Qualification engineering advice. Otherwise, its reliability
and function may not be guaranteed. Extreme conditions are commonly found at Airports, Transit Stations,
Banks, Stock market, and Controlling systems. The LCD product should be applied by global standard
environment. (refer ETSI EN 300, IEC 60721)
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# APPENDIX- I
غ LCM Label
Model
UL, TUV Mark
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LC420EUA
Engineering Specification
Serial No.
LGD Logo
Origin
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# APPENDIX- I I
غ LCM Source power sequence
< Source power sequence >
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LC420EUA
Engineering Specification
- Input Signal : SOE,POL,GSP,H_CONV,OPT_N
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