LG.Philips LCD LC420WX7-SLA1 Specification

LC420WX7

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

)

(
(

Preliminary Specification

●

)

Final Specification

Title 42.0” WXGA TFT LCD

BUYER
MODEL

APPROVED BY

/

/

/

SIGNATURE

DATE

SUPPLIER LG.Philips LCD Co., Ltd.

*MODEL LC420WX7

SUFFIX SLA1 (RoHS Verified)

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

Y. S Baek / S. Manager

REVIEWED BY

Y. H Choi / Engineer

PREPARED BY

S. W Kwag / Engineer

SIGNATURE

DATE

Please return 1 copy for your confirmation with

your signature and comments.

Ver. 0.0

TV Products Development Dept.

LG. Philips LCD Co., Ltd

1/ 33

LC420WX7

Liquid Crystal Display

Product Specification

CONTENTS

Number Item Page

COVER
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 SIGNAL TIMING WAVEFORMS
3-5 COLOR INPUT DATA REFERENCE

3-6 POWER SEQUENCE
4 OPTICAL SPECIFICATIONS
5 MECHANICAL CHARACTERISTICS
6 RELIABILITY
7 INTERNATIONAL STANDARDS

1
2
3
4
5
6
6

8
12
13
14
15
17
21
24
25

7-1 SAFETY
7-2 EMC

8 PACKING

8-1 DESIGNATION OF LOT MARK
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. 0.0

25
25
26
26
26
27
27
27
28
28
28
28

2/ 33

Product Specification

RECORD OF REVISIONS

Revision No. Revision Date Page Description

0.0 Feb, 21, 2007 - Preliminary Specification(First Draft)

LC420WX7

Liquid Crystal Display

Ver. 0.0

3/ 33

LC420WX7

Liquid Crystal Display

Product Specification

1. General Description

The LC420WX7 is a Color Active Matrix Liquid C rysta l Displa y w ith an integral Externa l Electrode Fluores cent
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 42.0 inch diagonally measured
active display area with WXGA resolution (768 vertical by 136
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,
thus presenting a palette of more than 16.7M(true) colors.
It has been designed to apply the 8-bit 1-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.

6 horizontal pixel array).

Mini-LVDS(RGB)

SDA

14CNs (High)
12CNs (High)

Gate Driver Circuit

Source Driver Circuit

S1 S1366

G1

TFT - LCD Panel

(1366 × RGB × 768 pixels)

G768

Back light Assembly (18 EEFL)

+12.0V

LVDS

Select

DCR
Enable

VBR_EXT

VBR-B
VBR-A
+24.0V

GND
Status

5pair

#9

#10
#28
#27VBR_OUT

CN1

(30pin)

SDRAM

MEM
CTRL

RGB

LVDS Rx (Receiver)
DCR Controller
ODC Controller
Timing Controller

Power Circuit

Inverter

(CN2,CN3)

EEPROM

(LUT)

SCL

Block

General Features

Active Screen Size 42.02 inches(1067.308mm) diagonal
Outline Dimension 983 mm(H) x 576 mm(V) x 51 mm(D) (Typ.)
Pixel Pitch 0.227mm x 0.681mm x RGB
Pixel Format 1366 horiz. by 768 vert. Pixels RGB stripe arrangement
Color Depth 8-bit, 16.7 M colors
Luminance, White 500 cd/m2 (Center 1-point) (Typ.)
Viewing Angle (CR>10) Viewing Angle Free ( R/L 178 (Typ.), U/D 178 (Typ))
Power Consumption Total 166.0 W (Typ.) (Logic=6.00 W, Inverter=160W [IBL=7.5mA] )
Weight 10.5 Kg (Typ.)
Display Operating Mode Transmissive mode, Normally black

Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer

Ver. 0.0

4/ 33

LC420WX7

Liquid Crystal Display

Product Specification

2. Absolute Maximum Ratings

The following items are maximum values wh ich, if exceeded, may cause faulty operation or damage to the
LCD module.

Table 1. ABSOLUTE MAXIMUM RATINGS

Parameter

Unit

Min Max

Value

Power Input
Voltage

Inverter Control
Voltage

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

LCD circuit
Inverter VBL 21.6 28.0 V [DC]

ON/OFF
Brightness VBR 0.0 +5.0 V [DC]

VLCD +8.0 +14.0 V [DC] at 25 ± 2 °C

VOFF / VON -0.3 +5.25 V [DC]

Note 1. Temperature and relative humidity range are shown in the figure below.

Wet bulb temperature should be 39 °C Max, and no condensation of water.

2. Gravity mura can be guaranteed under 40 °C condition.

90%

60

60%

RemarkSymbol

Note 1

Ver. 0.0

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%

Storage

Operation

Humidity [(%)RH]

5/ 33

LC420WX7

Liquid Crystal Display

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 input power for the
EEFL/Backlight is to power inverter.

Table 2. ELECTRICAL CHARACTERISTICS

Parameter Symbol

Unit Note

Min Typ Max

Value

Circuit :

Power Input Voltage VLCD 11.4 12.0 12.6 V [DC]

Power Input Current ILCD

Power Consumption PLCD 6.00 7.8 Watt 1
Rush current IRUSH - - 3.0 A 3

Note : 1. The specified current and power consumption are under the V

condition whereas mosaic pattern(8 x 6) is displayed and f

- 500 650 mA 1

- 550 715 mA 2

=12.0V, 25 ± 2°C, fV=60Hz

LCD

is the frame frequency.

V

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 1ms (min.).

White : 255Gray
Black : 0Gray

Ver. 0.0

Mosaic Pattern(8 x 6)

6/ 33

Product Specification

Table 3. ELECTRICAL CHARACTERISTICS (Continue)

LC420WX7

Liquid Crystal Display

Parameter Symbol

Unit Notes

Min Typ Max

Values

Inverter :

Power Supply Input Voltage V
Power Supply Input Voltage Ripple - 0.5 Vp-p
Power Supply Input Current IBL - 6.7 7.2 A
Power Consumption P

Power Supply Input Current(In-Rush) I

Input Voltage for

Control System

Signals

Lamp:
Discharge Stabilization Time T

Life Time 50,000 Hrs 3,4

Brightness Adjust VBR-B 0.0 - 3.3 Vdc 2

On V

On/Off

Off VOFF -0.3 0.0 0.8 Vdc

BL 22.8 24.0 25.2 Vdc

BL - 160 172 W

V

BL = 22.8V

RUSH --8.6A

ON 2.5 - 5.5 Vdc

S 3min 3

VBR-B =3.3 V
VBR-A =1.65V

Notes :

1. Electrical characteristics are determined after the unit has been ‘ON’ and stable for approximately 120
minutes at 25±2°C
The specified current and power consumption are under the typical supply Input voltage 24V and V

(VBR-A :1.65V & VBR-B : 3.3V), it is total power consumption.
The ripple voltage of the power supply input voltage is under 0.5 Vp-p.
LPL recommend Input Voltage is 24.0V ± 5%.

2.

Brightness Control.

This V

BR-B Voltage control brightness.

1

BR

FunctionVBR-B Voltage

Maximum Brightness (100%)3.3V
Minimum Brightness (20%)0V

3. The brightness of the lamp after lighted for 5minutes is defined as 100%.
is the time required for the brightness of the center of the lamp to be not less than 95% at typical current.

T

S

The screen of LCD module may be partially dark by the time the brightness of lamp is stable after turn on.

4. The life time is determined as the time at which luminance of the lamp is 50% compared to that of initial value

at the typical lamp current (V

BR-A : 1.65V & VBR-B :3.3V), on condition of continuous operating at 25 ± 2°C.

Specified value is when lamp is aligned horizontally.

5. The lamp life time for LCM is guaranteed minimum 50,000 hours in V

Ver. 0.0

BR (VBR-A:1.65V & VBR-B:3.3V).

7/ 33

LC420WX7

Liquid Crystal Display

Product Specification

3-2. Interface Connections

This LCD module employs two kinds of interface connection, a 30-pin connector is used for the module electronics and
14-pin (Master)and 12-pin(Slave) connectors are used for the integral backlight system.

3-2-1. LCD Module

- LCD Connector(CN1) : FI-X30SSL-HF (Manufactured by JAE) or Equivalent

- Mating Connector : FI-30C2L (Manufactured by JAE) or Equivalent

Table 4. MODULE CONNECTOR(CN1) PIN CONFIGURATION

Pin No. Symbol Description Note

1
2
3
4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

VLCD
VLCD
VLCD
VLCD

GND Ground
GND Ground

GND Ground
GND Ground

Select Select LVDS Data format

DCR Enable

GND Ground

RA- LVDS Receiver Signal(-)
RA+ LVDS Receiver Signal(+)
GND Ground

RB- LVDS Receiver Signal(-)
RB+ LVDS Receiver Signal(+)
GND Ground

RC- LVDS Receiver Signal(-)
RC+ LVDS Receiver Signal(+)
GND Ground

RCLK- LVDS Receiver Clock Signal(-)

RCLK+ LVDS Receiver Clock Signal(+)

GND Ground

RD- LVDS Receiver Signal(-)
RD+ LVDS Receiver Signal(+)
GND Ground

V

BR_OUT

V

BR_EXT

GND Ground
GND Ground

Note:

1. The pin no 9 is an option pin for DISM or LG format.( LG Format = “GND”or“OPEN”/ DISM Format =“VCC”)
Please refer to page 9 ,10 and 30 for further details.

2. The pin no 10 is an option pin for DCR Function ( Enable = “VCC” / Disable =“GND”)

3. The pin no 30 is LCD Test option.
“AGP” (Auto Generation LCM operates Pattern) or “NSB” (No Signal Black) is case that LVDS signals

are out of frequency or abnormal condition in spite of 12 volt power supply.
LPL recommends “NSB”. ( AGP : “VCC” or “OPEN” / NSB : “GND” )

4. All GND pins should be connected together, which should be also connected to the LCD module’s metal frame.

5. All V

LCD (power input) pins should be connected together.

6. Input Levels of LVDS signals are based on the IEA 664 Standard.

Ver. 0.0

Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V

Dynamic CR Enable ( ‘L ’ = Disable , ‘H’ = Enable )

VBR output form LCD module
External VBR input from System to LCD module

1
2

3

8/ 33

3-2-2. Backlight Inverter

LC420WX7

Liquid Crystal Display

Product Specification

[ Master ]

-Inverter Connector : S14B-PH-SMC
(manufactured by JST) or Equivalent

- Mating Connector : PHR-14 or Equivalent

[ Slave ]

-Inverter Connector : S12B-PH-SMC
(manufactured by JST) or Equivalent

-Mating Connector : PHR-12 or Equivalent

Table 5. INVERTER CONNECTOR PIN CONFIGULATION

Pin No Symbol Description Master Slave

1
2
3
4
5

6 GND POWER GND
7 GND POWER GND

8 GND POWER GND
9 GND POWER GND

10 GND POWER GND

11

12 On/Off 0V ~ 5.0V On/Off Don’t care
13
14 Status Normal : 3.0V~5.5V Abnormal : 0V~ 0.7V Status - 5

VBL
VBL
VBL
VBL
VBL

VBR-A

VBR-B

Power Supply +24.0V 1
Power Supply +24.0V 1
Power Supply +24.0V 1
Power Supply +24.0V 1
Power Supply +24.0V 1

0V ~ 3.3V

External DC Input Signal (0.0V ~ 3.3V)

VBL VBL
VBL
VBL
VBL
VBL

GND
GND

GND
GND
GND

VBR-A

GND
GND

GND
GND
GND

Don’t care

VBR-B

VBL
VBL
VBL
VBL

-

Note

1 & 2

Typical : 1.65V

3

Notes : 1. Pin 1~10 should be connected to master and slave connector

2. GND should be connected to the LCD’s metal frame.

3. If Pin #11 is open, VBR-A = 1.65V (Typ. luminance).

When VBR-A is over 1.65V( ~ 3.3V) continuously, luminance value is increasing.
However lamp’s life time is decreasing. Over voltage level for V

4. Even though Pin #14 is open, there is no effect on inverter’s normal operation.

14

1

1

12

Ver. 0.0

BR-A is used for DCR function only.

9/ 33

LC420WX7

Liquid Crystal Display

Product Specification

3-3. Signal Timing Specifications

Table 6 and Table 7 show 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. TIMING TABLE for NTSC

Item Symbol Min. Typ. Max.

DCLK Period
DCLK Frequency

Frequency
Valid

Vertical

Blank
Total
Frequency
Valid

Horizontal

Blank
Total

Table 7. TIMING TABLE for PAL

DCLK Period
DCLK Frequency

Frequency
Valid

Vertical

Blank
Total
Frequency
Valid

Horizontal

Blank
Total

t

CLK

f

CLK

f

V

t

VV

tVT-t

t

VT

f

H

t

HV

tHT-t

t

HT

t

CLK

f

CLK

f

V

t

VV

tVT-t

t

VT

f

H

t

HV

tHT-t

t

HT

VV

HV

VV

HV

12.5 13.8 15.8

63.0 72.4 80.0
57 60 63

- 768 -

8 22 295

776 790 1063

45 47.4 50

- 1366 -

90

1456

Min. NotesUnitSymbolItem

90

1456

162

1528

Typ.

162

1528

410

1776

Max.

15.813.812.5

80.072.463.0
535047

2951808

1063948776

5047.445

410

1776

Unit Notes

nsec
MHz

Hz
Line
Line
Line
KHz

t

CLK

t

CLK

t

CLK

nsec
MHz

Hz

-768-

Line
Line
Line
KHz

-1366-

t

CLK

t

CLK

t

CLK

Note :

1. The performance of the electro-optical characteristics may be influenced by variance of the vertical
refresh rate.

2. Above Timing Tables are only valid for DE Mode.

Ver. 0.0

10 / 33

3-4. Signal Timing Waveforms

LC420WX7

Liquid Crystal Display

Product Specification

DCLK

First data

Second data

tCLK

DE(Data Enable)

0.5 VDD

Invalid data

Invalid data

DE, Data

Pixel 0,0

Pixel 1,0

0.7VDD

Valid data

Pixel 2,0

Valid data

Pixel 3,0

0.3VDD

Invalid data

Invalid data

tHV

DE(Data Enable)

Ver. 0.0

tHT

1 768

tVV

tVT

11 / 33

LC420WX7

Liquid Crystal Display

Product Specification

3-5. Color Data Reference

The brightness of each primary color(red,green,blue) is based on the 8-bit gray scale data input for the color.
The higher binary input, the brighter the color. Table 8 provides a reference for color versus data input.

Table 8. COLOR DATA REFERENCE

Input Color Data

Basic
Color

RED

Color

Black 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Red (255)
Green (255)
Blue (255)
Cyan

Magenta
Yellow

White
RED (000) Dark 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

RED (001) 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

... ... ... ...

RED (254) 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (255) 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (000) Dark 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

MSB LSB

R7 R6 R5 R4 R3 R2 R1 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 B5 B4 B3 B2 B1 B0

1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

MSB LSB

RED

GREEN

BLUE

MSB LSB

GREEN

BLUE

Ver. 0.0

GREEN (001) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0

... ... ... ...

GREEN (254) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0
GREEN (255) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
BLUE (000) Dark
BLUE (001) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1

... ... ... ...

BLUE (254) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0
BLUE (255) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

12 / 33

3-6. Power Sequence

3-6-1. LCD Driving circuit

Power Supply For LCD

V

LCD

0V

Product Specification

90% 90%

10%

1 T2 T5 T6 T7

T

LC420WX7

Liquid Crystal Display

10%

Interface Signal (Tx)

Option Signal
(DISM, DCR_Enable)

Power for Lamp

Table 9. POWER SEQUENCE

Parameter

T1 0.5 - 20 ms
T2 5.0 - 50 ms
T3 200 - - ms

T5 0.5 - 50 ms
T6 - - 300 ms
T7 1.0 - - s
T8 0 < T8 < T2 ms
T9 0 < T9 < T5 ms

Valid Data

T3 T4

T8

T9

Lamp ON

Value

Min Typ Max

Unit

msT4 200 - -

Note : 1. Please avoid floating state of interface signal at invalid period.

2. When the interface signal is invalid, be sure to pull down the power supply VLCD to 0 V.

3. The case when the T2/T5 exceed maximum specification, it operates protection
pattern(Black pattern) till valid signal inputted. There is no reliability problem.

4. 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.

Ver. 0.0

13 / 33

3-6-2. ON/OFF for Inverter

LC420WX7

Liquid Crystal Display

Product Specification

Power Supply For Inverter

VBL

10%

0V

VON/OFF

VBR-A

VBR-B : VBR-B has Same sequence with VBR-A.

3-6-3. Deep condition for Inverter

90%

T1 T2

24V (typ.)

0.7V

1000ms (Min) 1000ms (Min)

T4

T5

T3 T2

T4

Lamp ON

T7

T6

V

: 24V

BL

(min.) x 0.80

V

BL

Table 10. POWER SEQUENCE

Parameter

Min Typ Max

T1 20 - - ms 1
T2 500 - - ms
T3 200 - - ms
T4 0 ­T5 10 - - ms
T6 - - 10 ms V
T7 1000 - - ms 3

Values

Units

ms 2

Notes : 1. T1 describes rising time of 0V to 24V and is not applied at restarting time.

2. T3(max) is less than T2.

3. When V

4. In T7 section, V

Ver. 0.0

[24V] is supplied always, there is no reliability problem.

BL

BR-B is 3.3V and VBR-A is 1.65V.

0 V

Remarks

(Typ) x 0.80

BL

14 / 33

LC420WX7

Liquid Crystal Display

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. 1.

Optical Stage(x,y)

LCD Module

FIG. 1 Optical Characteristic Measurement Equipment and Method

Table 11. OPTICAL CHARACTERISTICS

Parameter Symbol

Contrast Ratio

Surface Luminance, white L

Luminance Variation

Gray-to-Gray G to G - 5 8
Rise + decay

RED

GREEN

Color Coordinates
[CIE1931]

BLUE

WHITE

Viewing Angle (CR>10)

x axis, right(φ=0°) θr 89 - -

x axis, left (φ=180°)

y axis, up (φ=90°)

y axis, down (φ=270°)

Gray Scale - - - 6

CR 800 1000

DCR Appendix V

WH

δ

WHITE

Tr

TrD - 10 14

R +

Rx
Ry 0.344

Gx 0.286
Gy 0.614

Bx 0.146

By 0.061

Wx 0.279
Wy 0.292

θl 89 - -
θu 89 - -
θd 89 - -

Pritchard 880 or
equivalent

50cm

Ta= 25±2°C, V

Dclk=72.4MHz,

V

BR-A=1.65V, VBR-B=3.3V (Except DCR Function)

Value

Min Typ Max

- -

400 500 cd/m

5P 1.3 3

0.635

Typ

-0.03

=12.0V, fV=60Hz,

LCD

Typ

+0.03

degree 5

Unit Note

2

ms 4Response Time

1

2

Ver. 0.0

15 / 33

Product Specification

Note : 1. Contrast Ratio(CR) is defined mathematically as :

CR (Contrast Ratio) = Maximum CRn (n=1, 2, 3, 4, 5)
DCR (Dynamic CR) = Maximum CRn (n=1, 2, 3, 4, 5)

Surface Luminance at position n with all white pixels

CRn =

Surface Luminance at position n with all black pixels

n = the Position number(1, 2, 3, 4, 5), For more information, see FIG 2.

2. Surface luminance are determined after the unit has been ‘ON’ and 30min 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 l umin ance , δ WHITE is defined as :

, L

δ WHITE(5P) = Maximum(L

on1,Lon2

on3

, L

on4

, L

) / Minimum(L

on5

on1,Lon2

LC420WX7

Liquid Crystal Display

, L

, L

, L

on3

on4

on5

)

Where L

on1

to L

are the luminance with all pixels displaying white at 5 locations .

on5

For more information, see the FIG. 2.

4. Response time is the time required for the display to transition from G(N) to G(M) (Rise Time, Tr
and from G(M) to G(N) (Decay Time, Tr

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. 4.

6. Gray scale specification

Gamma Value is approximately 2.2. For more information, see the Table 12.

Table 12. GRAY SCALE SPECIFICATION

Gray Level Luminance [%] (Typ)

L0 0.11
L15
L31
L47
L63
L79
L95

L111
L127
L143
L159
L175
L191
L207
L223
L239
L255

). For additional information see the FIG. 3. (N<M)

D

0.25

1.08

2.07

4.51

7.75

12.05

17.06

22.36

28.21

35.56

43.96

53.00

63.37

74.66

88.17
100

)

R

Ver. 0.0

16 / 33

Product Specification

Measuring point for surface luminance & measuring point for luminance variation

H

A

③②

LC420WX7

Liquid Crystal Display

V

①

B

A : H / 4 mm

④

FIG.2 Measure Point for Luminance

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

⑤

TrD

B : V / 4 mm

H : 930.25 mm
V : 523.01 mm

@ H,V : Active Area

Ver. 0.0

Optical
Response

10

0

Gray(N)

N,M = 0(Black)~255(White), N<M

FIG.3 Response Time

Gray(M)

Gray(N)

17 / 33

Dimension of viewing angle range

LC420WX7

Liquid Crystal Display

Product Specification

φ

= 180°, Left

φ

= 270°, Down

Normal

θ

φ

FIG.4 Viewing Angle

E

Y

φ

= 90°, Up

φ

= 0°, Right

Ver. 0.0

18 / 33

LC420WX7

Liquid Crystal Display

Product Specification

5. Mechanical Characteristics

The contents provide general mechanical characteristics. In addition the figures in the next page are detailed
mechanical drawing of the LCD module.

Table 13. MECHANICAL CHARACTE RISTIC S

Item Value

Horizontal 983.0 mm

576.0 mmOutline Dimension

531.0 mm

Bezel Area

Active Display Area

Weight

Surface Treatment

Vertical
Depth 51.0 mm
Horizontal 939.0 mm
Vertical
Horizontal 930.25 mm
Vertical 523.01 mm

10.5 Kg (Typ.) , 11.0 Kg (Max.)
Hard coating(3H)

Anti-glare treatment of the front polarizer

Note : 1.Please refer to a mechanic drawing in terms of tolerance at the next page.

Ver. 0.0

19 / 33

<FRONT VIEW>

LC420WX7

Liquid Crystal Display

Product Specification

Ver. 0.0

20 / 33

<REAR VIEW>

LC420WX7

Liquid Crystal Display

Product Specification

Ver. 0.0

21 / 33

Product Specification

6. Reliability

Table 14. 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

5

Vibration test
(operating)

Vibration level : 1.0Grms
Bandwidth : 10-300Hz
Duration : X,Y,Z, 30 min

One time each direction

LC420WX7

Liquid Crystal Display

Shock level : 50Grms

6

7 Humidity condition Operation Ta= 40 °C ,90%RH

8

Shock test
(operating)

Altitude operating

storage / shipment

Waveform : half sine wave, 11ms
Direction : ±X, ±Y, ±Z

One time each direction

0 - 14,000 feet(4267.2m)
0 - 40,000 feet(12192m)

Ver. 0.0

22 / 33

Product Specification

7. International standards

7-1. Safety

a) UL 60950-1:2003, First Edition, Underwriters Laboratories, Inc.,
Standard for Safety of Information Technology Equipment.

b) UL 60065, 7

Standard for Audio, Video and Similar Electronic Apparatus.
c) CAN/CSA C22.2, No. 60065:03, Canadian Standards Association,
Standard for Audio, Video and Similar Electronic Apparatus.

th

Edition, dated June 30, 2003, Underwriters Laboratories, Inc.,

LC420WX7

Liquid Crystal Display

7-2. EMC

a) ANSI C63.4 “Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and

Electrical Equipment in the Range of 9kHZ to 40GHz. “American National Standards Institute(ANSI),
1992

b) C.I.S.P.R “Limits and Methods of Measurement of Radio Interface Characteristics of Information

Technology Equipment.“ International Special Committee on Radio Interference.

c) EN 55022 “Limits and Methods of Measurement of Radio Interface Characteristics of Information

Technology Equipment.“ European Committee for Electrotechnical Standardization.(CENELEC), 1998

( Including A1: 2000 )

Ver. 0.0

23 / 33

Product Specification

8. Packing
8-1. Designation of Lot Mark

a) Lot Mark

ABCDEFGHI JKLM

A,B,C : SIZE(INCH) D : YEAR
E : MONTH F ~ M : SERIAL NO.

Note

1. YEAR

LC420WX7

Liquid Crystal Display

Year
Mark

321

200452005

4

200320022001

2006720078200892009

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.

2010

0

Oct

A

Nov

B

DecMarFebJan

C321

8-2. Packing Form

a) Package quantity in one box : 12 pcs
b) Box Size :1150 mm(L) X 1020 mm(W) X 810 mm(H)

Ver. 0.0

24 / 33

LC420WX7

Liquid Crystal Display

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 holes arranged in four corners or four sides.
(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 chlor ine type materials for the cover case are not des irable because the former

generates corrosive gas of attacking the polarizer at high tempe rature and the latte r causes ci rcuit br eak
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 mater ials 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(requ ired time that brightness is stable after tu rned on) becomes

longer.
(4) Be careful for condensation at sudden temperature change. Condensation makes damage to polarize r 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 cir cuits. Sufficient suppression to the elec tromagnetic 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. O therwise, 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 causes metallic foreign material and deal LCM a fatal blow)

(9) Please do not set LCD module on its edge.

Ver. 0.0

25 / 33

LC420WX7

Liquid Crystal Display

Product Specification

9-3. Electrostatic Discharge Control

Since a module is composed of electronic circuits, it is not strong to elec trostatic di scharge. 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 exp ose t h e mo dul e t o sunli ght or flu oresce nt light. K e ep t h e t emp erat ure

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 care fully by people who are electrically g rounded and with well ion­blown equipment or in such a condition, etc.

(2) When the module with protection film a ttached 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 sur face or its ves tige is recognized,

please wipe them off with absorbent cotton waste or other soft materia l like chamois soaked with normal­hexane.

Ver. 0.0

26 / 33

Product Specification

# APPENDIX-I-1

■ REQUIRED SIGNAL ASSIGNMENT FOR LVDS TRANSMITTER ( Pin9=“L” )

LC420WX7

Liquid Crystal Display

Host System

24 Bit

RED0
RED1
RED2
RED3
RED4
RED5
RED6

RED7
GREEN0
GREEN1
GREEN2
GREEN3
GREEN4
GREEN5
GREEN6
GREEN7

BLUE0
BLUE1
BLUE2
BLUE3
BLUE4
BLUE5
BLUE6
BLUE7

Hsync
Vsync

Data Enable

CLOCK

DS90C385

or Compatible

51
52
54
55
56
3
50
2
4
6
7
11
12
14
8
10
15
19
20
22
23
24
16
18
27
28
30
31

TxOUT0­TxOUT0+

TxOUT1­TxOUT1+

TxOUT2­TxOUT2+

TxCLKOUT­TxCLKOUT+

TxOUT3­TxOUT3+

FI-X30SSL-HF

48
47

46
45

42
41

40
39

38
37

GND

GND

12
13

15
16

18
19

21
22

24
25

30

Timing

Controller

100Ω

100Ω

100Ω

100Ω

100Ω

9

RxIN0­RxIN0+

RxIN1­RxIN1+

RxIN2­RxIN2+

RxCLKIN­RxCLKIN+

RxIN3­RxIN3+

LG / DISM

LCD Test

LCD Module

Note: 1. The LCD Module uses a 100 Ohm[Ω] resistor between positive and negative lines of each receiver

input.

2. Refer to LVDS Transmitter Data Sheet for detail descriptions. (DS90C385 or Compatible)

3. ‘7’ means MSB and ‘0’ means LSB at R,G,B pixel data.

Ver. 0.0

27 / 33

Product Specification

# APPENDIX-I-2

■ REQUIRED SIGNAL ASSIGNMENT FOR LVDS TRANSMITT ER ( Pin9=“H” )

LC420WX7

Liquid Crystal Display

Host System

24 Bit

RED0

RED1

RED2

RED3

RED4

RED5

RED6

RED7
GREEN0
GREEN1
GREEN2
GREEN3
GREEN4
GREEN5
GREEN6
GREEN7

BLUE0
BLUE1
BLUE2
BLUE3
BLUE4
BLUE5
BLUE6
BLUE7

Hsync
Vsync

Data Enable

CLOCK

DS90C385

or Compatible

50
2
51
52
54
55
56
3
8
10
4
6
7
11
12
14

16
18
15
19
20
22
23
24
27
28
30
31

TxOUT0­TxOUT0+

TxOUT1­TxOUT1+

TxOUT2­TxOUT2+

TxCLKOUT­TxCLKOUT+

TxOUT3­TxOUT3+

FI-X30SSL-HF

48
47

46
45

42
41

40
39

38
37

GND

Vcc

12
13

15
16

18
19

21
22

24
25

30

Timing

Controller

100Ω

100Ω

100Ω

100Ω

100Ω

9

RxIN0­RxIN0+

RxIN1­RxIN1+

RxIN2­RxIN2+

RxCLKIN­RxCLKIN+

RxIN3­RxIN3+

LG /

DISM

LCD Test

LCD Module

Note: 1. The LCD module uses a 100 Ohm[Ω] resistor between positive and negative lines of each receiver

input.

2. Refer to LVDS Transmitter Data Sheet for detail descriptions. (DS90C385 or Compatible)

3. ‘7’ means MSB and ‘0’ means LSB at R,G,B pixel data.

Ver. 0.0

28 / 33

# APPENDIX-II

■ LC420WX7-SLA1 – Pallet Ass’y

LC420WX7

Liquid Crystal Display

Product Specification

Ver. 0.0

NO. DESCRIPTION MATERIAL

1 LCD Module

2 BAG 42INCH
3 TAPE MASKING 20MMX50M
4 PALLET PAPER 1140X990X130MM
5 PACKING,BOTTOM EPS
6 PACKING,TOP EPS
7 ANGLE,POST PAPER
8 ANGLE,PACKING PAPER
9 BAND,CLIP STEEL
10 BAND PP
11 LABEL YUPO 80G 100X100

29 / 33

# APPENDIX- III

■ LCM Label

LC420WX7

Liquid Crystal Display

Product Specification

Model

LC420WX7
(SL)(A1)

RoHS Verified

Serial No.

UL, TUV Mark

LPL Logo

US PATENT No. Origin

■ Serial No. (See CAS 24 page for more information)

81 2 3 4 5 6 7 9 10 11 12

13

Ver. 0.0

Inch

MonthYear

M Ass’y Factory code

Serial No.

30 / 33

30 / 33

# APPENDIX- IV

■ Pallet Label

LC420WX7

12

LC420WX7

Liquid Crystal Display

Product Specification

SLA1

RoHS Verified

Ver. 0.0

31 / 33

31 / 33

LC420WX7

Liquid Crystal Display

# APPENDIX 3

# APPENDIX- V-1

■ LCM DCR Only

FFC Cable

FFC Cable

LCM

Master

Inverter

14

1

LCM Control Board

NTSC / PAL

NTSC / PAL

NTSC / PAL

Sync_PWM

Sync_PWM

System

Board

13

11

11

Sync_PWM

1

30

12V

VBR - B

VBR - B

3.3V

VBR - A

VBR - A

NC / 1.65V

Product Specification

Analog Switch

10

DCR_Enable “H”

LCM VBR-B

LCM VBR-B

3.3V

2827

30

1

LCM

Slave

Inverter

12112

DCR_Enable On(3.3V) Off (0V)

V

-B 0V ~ 3.3V 3.3V

BR

-A 1.65V or NC 1.65V or NC

V

BR

DCR Level 2000 : 1 1000 : 1

Ver. 0.0

Gray Level

L0
L15
L31
L47
L63
L79
L95

L111
L127
L143
L159

L175
L191
L207
L223

L239
L255

Luminance [%] DCR On

VBR-A = 1.65V

0.05

0.20

0.63

1.68

3.54

6.41

10.82

16.74

22.00

27.44

34.62

42.94

51.94

62.25

73.66

87.05
100

32 / 33

LC420WX7

Liquid Crystal Display

# APPENDIX 3

Product Specification

# APPENDIX- V-2

■ System DCR (Dynamic Contrast Ratio)- Max 5000:1

LCM Control Board

NTSC / PAL

NTSC / PAL

NTSC / PAL

Sync_PWM

Sync_PWM

LCM

Master

Inverter

14

1

FFC Cable

FFC Cable

System

Board

13

11

11

Sync_PWM

12V

1

30

VBR - B

VBR - B

0 ~ 3.3V

VBR - A

VBR - A

0 ~ 3.3V

10

LCM VBR-B

Analog Switch

DCR_Enable “L”

3.3V

2827

30

1

LCM

Slave

Inverter

12112

VBR-B 0V ~ 3.3V 3.3V
VBR-A 0V ~ 3.3V 1.65V
DCR Level 5000 : 1 1000 : 1

Note : 1. To make DCR Max 5000:1, V

2. DCR Max 5000:1 is defined mathematically as :
DCR = Maximum DCRn (n=1, 2, 3, 4, 5)

Surface Luminance at position n with all white pixels (VBR-B=3.3V, VBR-A=3.3V)

DCRn =

Surface Luminance at position n with all black pixels (VBR-B=0V, VBR-A=0V)

n = the Position number(1, 2, 3, 4, 5). For more information, see FIG 2.

Ver. 0.0

-A and VBR-B must be given by system.

BR

33 / 33