LG.Philips LCD LC420WXN-SAA1 Specification

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LD420WXN

Product Specification

SPECIFICATION

FOR

APPROVAL

)

(

(

Preliminary Specification



)

Final Specification

Title 42.0” WXGA TFT LCD

BUYER

MODEL

APPROVED BY

/

/

SIGNATURE

DATE

SUPPLIER LG Display Co., Ltd.

*MODEL LD420WXN

SUFFIX SAA1

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

Y. S Park / S. Manager

REVIEWED BY

M. K Lee / Manager

SIGNATURE

DATE

PREPARED BY

/

Please return 1 copy for your confirmation with

your signature and comments.

Ver. 0.0

J. H Kim / Engineer

TV Products Development Dept.

LG Display Co., Ltd

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LD420WXN

Product Specification

CONTENTS

Number ITEM

COVER

CONTENTS

RECORD OF REVISIONS 3

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 DATA REFERENCE

3-6 POWER SEQUENCE

4 OPTICAL SPECIFICATIONS

5 MECHANICAL CHARACTERISTICS

Page

1

2

4

5

6

6

8

10

11

12

13

15

20

6 RELIABILITY

7 INTERNATIONAL STANDARDS

7-1 SAFETY

7-2 EMC

8 PACKING

8-1 DESIGNATION OF LOT MARK

8-2 PACKING FORM

9 PRECAUTIONS 25

9-1 MOUNTING PRECAUTIONS 25

9-2 OPERATING PRECAUTIONS 25

9-3 ELECTROSTATIC DISCHARGE CONTROL 26

9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE 26

9-5 STORAGE 26

9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM 26

9-7 APPROPRIATE CONDITION FOR PUBLIC DISPLAY 26

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23

23

23

24

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24

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Revision No. Revision Date Page Description

0.0 Jan, 24, 2007 - Preliminary Specification(First Draft)

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LD420WXN

Product Specification

RECORD OF REVISIONS

Ver. 0.0

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1. General Description

The LC420WXN 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 42.0 inch diagonally measured
active display area with WXGA resolution (768 vertical by 1366 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes.
Gray scale or the luminance of the sub-pixel color is determined with a 8-bit gray scale signal for each dot,
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.

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LD420WXN

Product Specification

Mini-LVDS(RGB)

G1

Gate Driver Circuit

G768

Source Driver Circuit

S1 S1366

TFT - LCD Panel

(1366 Ý RGB Ý 768 pixels)

Back light Assembly

+12.0V

LVDS

Select #9

VBR_EXT

5pair

DCR
Enable

+24.0V, VBR-A,

V

BR

CN5

#10

(30pin)

#28

#27VBR_OUT

-B, On/off

EEPROM

(LUT)

SCL

SDRAM

LVDS Rx (Receiver)

DCR & ODC Controller

Timing Controller

Power Circuit

Block

SDA

Inverter (Master, 14Pin, High)

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 165.4 W (Typ.) (Logic=5.40 W, Inverter=160W [VBR-A = 1.65V] )

Weight 10.5 Kg (Typ.)

Display Operating Mode Transmissive mode, Normally black

Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer (Haze 13%)

Possible Display Type Landscape and Portrait Enabled

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2. Absolute Maximum Ratings

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

Table 1. ABSOLUTE MAXIMUM RATINGS

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LD420WXN

Product Specification

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 -0.3 27.0 V [DC]

ON/OFF

Brightness VBR 0.0 +5.0 V [DC]

VLCD +8.0 +14.0 V [DC] GY\Gr YG¶j

VOFF / VON -0.3 +5.5 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.

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

40%

Humidity [(%)RH]

10%

¶C]

Storage

Operation

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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

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LD420WXN

Product Specification

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 5.4 7.0 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

- 450 585 mA 1

- 500 650 mA 2

=12.0V, 25 r 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

Mosaic Pattern(8 x 6)

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Table 3. ELECTRICAL CHARACTERISTICS (Continue)

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LD420WXN

Product Specification

Parameter Symbol

Values

Min Typ Max

Inverter :

Power Supply Input Voltage

Power Supply Input Voltage Ripple - - 0.5

Power Supply
Input Current

Power Supply Input Current (In-Rush)

Power Consumption

Input Voltage for

Control System

Signals

Lamp:

Discharge Stabilization Time

Life Time 50,000 Hrs

After Aging

Before Aging

Brightness Adjust

On/Off

Brightness Adjust

On

Off

BL

V

IBL_A

IBL_B

Irush

PBL

V

BR-A 0.0 1.65 3.3 Vdc

V on

V off

VBR-B

Ts

22.8 24.0 25.2

-6.7

-7.2

-7.2

-7.7

--9.3A

- 160 172 W VBR-A = 1.65V … 1

2.5 - 5.0 Vdc

-0.3 0.0 0.8 Vdc

0 - 3.3 V

7.2

7.7

7.7

8.2

3min 3

Unit Notes

Vdc

Vp-p

AVBR-A = 1.65V … 1

AV

AVBR-A = 1.65V … 2

AV

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

1

1

BR-A = 3.30V … 1

BR-A = 3.30V … 2

BL = 22.8V

4

Notes :

1. Electrical characteristics are determined after the unit has been ‘ON’ and stable for approximately 30

minutes at 25·2¶C. The specified current and power consumption are under the typical supply Input voltage

24Vand V

BR (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. Electrical characteristics are determined within 30 minutes at 25·2¶C.

The specified currents are under the typical supply Input voltage 24V.

. 3. The brightness of the lamp after lighted for 5minutes is defined as 100%.

T

is the time required for the brightness of the center of the lamp to be not less than 95% at typical current.

S

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

4. Specified Values are for a single lamp which is aligned horizontally.
The life time is determined as the time 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 r 2¶C

5. LPL recommend that the PWM freq. is synchronized with Two times harmonic of Vsync signal of system.

6. The duration of rush current is about 20ms.

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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 connector is used for the integral backlight system.

3-2-1. LCD Module

- LCD Connector(CN5) : FI-X30SSL-HF (Manufactured by JAE) or Equivalent

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

Table 4. MODULE CONNECTOR(CN5) 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

kjyGl

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

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Product Specification

Power Supply +12.0V

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

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}iyGGGsjkG
lG}iyGGGzGGsjkG

LD420WXN

1

2

3

Notes: 1. The pin no 9 is an option pin for DISM or LG format. ( VESA Format = “GND” / JEIDA Format =“VCC”)

Please refer to Appendix 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.
LCM operates “AGP” (Auto Generation 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 (ground) 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.

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ଝ

3-2-2. Backlight Inverter

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

- Mating Connector : PHR-14 or Equivalent

Table 5. INVERTER CONNECTOR PIN CONFIGULATION

Pin No Symbol Description Note

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LD420WXN

Product Specification

1

2

3

4

5

6GND

7GND

8GND

9GND

10 GND

11

12 On/Off

13

14 Status

VBL

VBL

VBL

VBL

VBL

VBR-A

VBR-B

Power Supply +24.0V

Power Supply +24.0V

Power Supply +24.0V

Power Supply +24.0V

Power Supply +24.0V

Backlight Ground

Backlight Ground

Backlight Ground

Backlight Ground

Backlight Ground

Analog dimming voltage
DC 0.0V ~ 3.3V (Typ : 1.65V)

0.0V ~ 5.0V

Burst dimming voltage
DC 0.0V ~ 3.3V

Normal : Upper 3.0V

Abnormal : Under 0.7V

Notes : 1. GND should be connected to the LCD module’s metal frame.

2. If Pin #11 is open, V

BR-A = 1.65V. When apply over 1.65V( ~ 3.3V) continuously,

its luminance is increasing however lamp’s life time is decreasing.
It could be usable for boost up luminance when using DCR (=Dynamic contrast ratio) function only.

3. Minimum Brightness : V

BR-B =0V Maximum Brightness : VBR-B = 3.3V

4. Even though Pin #14 is open, there is no effect on inverter operating, The output terminal of inverter.

5. Each impedance of pin #11,12 and 13 is 300

[k˟], 80[k˟], 75[k˟]

1

2, 3

3

4

Pin Number of Inverter Connector

PCB

14

…

…

1

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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.

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LD420WXN

Product Specification

Table 6. TIMING TABLE for NTSC &PAL

[ DE (Data Enable) Only ]

ITEM Symbol Min Typ Max Unit Note

Period tCLK 12.5 13.8 15.8 ns

DCLK

Frequency - 63 72.4 80 MHz

Hsync

Period t

Horizontal Valid tHV 1366 1366 1366 tCLK

Horizontal Blank

Frequency fH 45 47.4 50

Width tWH -32-tCLK

Horizontal Back Porch tHBP 24 48 -

Horizontal Front Porch tHFP 40 80 -

Period t

Vertical Valid tVV 768 768 768 tHP

HT 1456 1528 1920 tCLK

-

VT 776 790 1063 tHP

tHP- tHV 162 tHP- tHV

KHz

Vertical Blank - tVP- tVV 22 tVP- tVV tHP

Vsync

Frequency fV 47 60 63 Hz

Width t

Vertical Back Porch tVBP 515-Hz

Vertical Front Porch t

WV -5-tHP

VFP 12-

t

HP

Note 1)
PAL : 47~53Hz
NTSC : 57~63Hz

Note : 1. The Input of HSYNC & VSYNC signal does not have an effect on normal operation(DE Only Mode).

If you use spread spectrum for EMI, add some additional clock to minimum value for clock margin.

2. The performance of the electro-optical characteristics may be influenced by variance of the vertical

refresh rate and the horizontal frequency.

3. Timing should be set based on clock frequency.

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3-4. Signal Timing Waveforms

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LD420WXN

Product Specification

DE, Data

DCLK

tCLK

Data

0.5 VDD

Invalid data

DE(Data Enable)

* Reference : Sync. Relation

HSync

WH

t

Valid data

Pixel 0,0

Pixel 2,0

tHP

0.7VDD

0.3VDD

Invalid data

* tHB = tHFP + tWH +tHBP

* tVB = tVFP + tWV +tVBP

tHBP tHV

tHFP

DE(Data Enable)

tVP

tWV

VSync

tVBP

tVV tVFP

DE(Data Enable)

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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 7. COLOR DATA REFERENCE

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LD420WXN

Product Specification

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 (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

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

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

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

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3-6. Power Sequence

3-6-1. LCD Driving circuit

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LD420WXN

Product Specification

Power Supply For LCD

V

LCD

0V

Interface Signal (Tx)

Option Signal

(LVDS_select, DCR_Enable, BIT_select)

Power for Lamp

Table 8. POWER SEQUENCE

Parameter

T1 0.5 - 20 ms

T2 0.5 -

T3

T5 0 - - ms

T6 2.0 - - s

T7 0 ms

T8 0 ms

Min Typ Max

3 x (1/

fV)

10%

90%

1 T2 T5

T

Valid Data

T3 T4

T7

Lamp ON

Value

--ms

-T2

- -

90%

10%

T6

T8

Unit

-

ms

msT4 200 - -

Notes

4

3

3

5

4

4

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 V

LCD

to 0V.

3. 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.

4. If the on time of signals(Interface signal and Option signals) precedes the on time of Power(V
check the LCD logic Power(Vcc) is under 0.8V, otherwise it will be happened abnormal display.

5. T6 should be measured after the Module has been fully discharged between power off and on

period.

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3-6-2. Sequence for Inverter

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LD420WXN

Product Specification

Power Supply For Inverter

VBL

10%

0V

VON/OFF

VBR-A &
VBR-B

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

VBL: 24V

(Typ.) x 0.8

V

BL

0 V

Table 9. Power Sequence for Inverter

Parameter

T1 20 - - ms 1

T2 500 - - ms

T3 200 - - ms

T4 0 -

T5 10 - - ms

T6 - - 10 ms V

T7 1000 - - ms 3

Min Typ Max

Values

Units

ms 2

Remarks

BL

(Typ) x 0.8

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

2. T4(max) is less than T2.

3. In T7 section, VBR-B is recommended 3.3V.

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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 ) and T equal to 0 ¶.
It is presented additional information concerning the measurement equipment and method in FIG. 1.

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LD420WXN

Product Specification

Optical Stage(x,y)

LCD Module

Pritchard 880 or
equivalent

50cm

FIG. 1 Optical Characteristic Measurement Equipment and Method

Ta= 25·2¶C, V

Table 10. OPTICAL CHARACTERISTICS

Parameter Symbol

Contrast Ratio CR 600 800 1

Surface Luminance, white L

Luminance Variation

Response Time Gray-to-Gray G to G - 9 14 ms 4

RED

GREEN
Color Coordinates
[CIE1931]

BLUE

WHITE

Viewing Angle (CR>10)

x axis, right(I=0¶) Tr 89 - -

x axis, left (I=180¶)

y axis, up (I=90¶)

WH

G

WHITE

5P 1.3 3

Rx

Ry TBD

Gx TBD

Gy TBD

Bx TBD

By TBD

Wx 0.279

Wy 0.292

Tl 89 - -

Tu 89 - -

Min Typ Max

400 500 cd/m

Typ

-0.03

V

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

Value

TBD

=12.0V, fV=60Hz, Dclk=72.4MHz,

LCD

Unit Note

2

Typ

+0.03

degree 5

2

y axis, down (I=270¶)

Gray Scale - 2.2 - 6

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Td 89 - -

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

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

CRn =

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 luminance , G WHITE is defined as :

Where L

For more information, see the FIG. 2.

Surface Luminance at position n with all white pixels

Surface Luminance at position n with all black pixels

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

G WHITE(5P) = Maximum(L

on1

to L

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

on5

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Product Specification

, L

, L

on1,Lon2

on3

on4

, L

) / Minimum(L

on5

on1,Lon2

, L

on3

, L

on4

LD420WXN

, L

)

on5

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 11.

Table 11. GRAY SCALE SPECIFICATION

Gray Level Luminance [%] (Typ)

L0 0.12

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

0.29

1.10

2.69

5.12

8.67

13.3

18.1

23.7

29.9

36.9

45.6

55.4

65.2

76.2

85.9

100

)

R

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ྙ

ྛྚ

ྜྷ

ྜ

Measuring point for surface luminance & measuring point for luminance variation

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LD420WXN

Product Specification

H

A

V

B

A : H / 4 mm
B : V / 4 mm

H : 930.25 mm
V : 523.01 mm

@ H,V : Active Area

FIG. 2 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

Optical
Response

Ver. 0.0

10

0

Gray(N)

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

FIG.3 Response Time

Gray(M)

Gray(N)

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Dimension of viewing angle range

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LD420WXN

Product Specification

I

= 180q, Left

I

= 270q, Down

Normal

T

I

FIG.4 Viewing Angle

E

Y

I

= 90q, Up

I

= 0q, Right

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5. Mechanical Characteristics

Table 12 provides general mechanical characteristics.

Table 12. MECHANICAL CHARACTERISTICS

Item Value

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LD420WXN

Product Specification

Horizontal 983.0 mm

576.0 mmOutline Dimension

531.0 mm

930.25 mm

523.01 mm

Bezel Area

Active Display Area

Weight

Vertical

Depth 51.0 mm

Horizontal 939.0 mm

Vertical

Horizontal

Vertical

10.5 Kg (Typ.) , 11.0 Kg (Max.)

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

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<FRONT VIEW>

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Product Specification

Ver. 0.0

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<REAR VIEW>

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Product Specification

Ver. 0.0

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6. Reliability

Table 13. 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

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LD420WXN

Product Specification

4 Low temperature operation test Ta= 0¶C 240h

Wave form : random

5

6

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

8

Vibration test
(operating)

Shock test
(operating)

Altitude operating

storage / shipment

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

One time each direction

Shock level : 50Grms
Waveform : half sine wave, 11ms
Direction : ᇹX, ᇹY, ᇹZ

One time each direction

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

Note : Before and after Reliability test, LCM should be operated with normal function.

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7. International Standards

7-1. Safety

a) UL 60065, 7thEdition, dated June 30, 2003, Underwriters Laboratories, Inc.,

Standard for Audio, Video and Similar Electronic Apparatus.

b) CAN/CSA C22.2, No. 60065:03, Canadian Standards Association,

Standard for Audio, Video and Similar Electronic Apparatus.

c) IEC60065:2001, 7

Safety requirements for Audio, Video and Similar Electronic Apparatus..

th

Edition CB-scheme and EN 60065:2002,

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LD420WXN

Product Specification

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) CISPR13 "Limits and Methods of Measurement of Radio interference characteristics of Sound

and Television broadcast receivers and associated equipment"

CISPR22 "Limits and Methods of Measurement of Radio interference characteristics of Information

Technology Equipment" International Special Committee on Radio Interference.

c) EN55013 "Limits and Methods of Measurement of Radio interference characteristics of Sound and

Television broadcast receivers and associated equipment"

EN55022 "Limits and Methods of Measurement of Radio interference characteristics of Information

Technology Equipment" European Committee for Electro Technical Standardization.(CENELEC),
1988(Including A1:2000)

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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.

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LD420WXN

Product Specification

Note

1. YEAR

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.

8-2. Packing Form

a) Package quantity in one box : 12 pcs

b) Box Size :1140 mm(L) X 990 mm(W) X 820 mm(H)

2010

0

Oct

A

Nov

B

DecMarFebJan

C321

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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. There is no problem of Panel crack under 5kgf / ɐ10mm

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LD420WXN

Product Specification

(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) It is recommended to avoid the signal cable and conductive material over the inverter transformer

for it can cause the abnormal display 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

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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.

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LD420WXN

Product Specification

(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.

9-7. Appropriate Condition for Public Display

- Generally large-sized LCD modules are designed for consumer applications (TV).
Accordingly, a long-term display like in Public Display (PD) application, can cause uneven display including
image sticking. To optimize module's lifetime and function, several operating usages are required.

1. Normal operating condition

- Temperature: 0 ~ 40୅

- Operating Ambient Humidity : 10 ~ 90 %

- Display pattern: dynamic pattern (Real display)
Note) Long-term static display can cause image sticking.

2. Operating usages under abnormal condition1
a. Ambient condition

- Well-ventilated place is recommended to set up PD system.

b. Power and screen save

- Periodical power-off or screen save is needed after long-term display.

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3. Operating usages to protect against image sticking due to long-term static display
a. Suitable operating time: under 18 hours a day.
b. Static information display recommended to use with moving image.

- Cycling display between 5 minutes' information(static) display and 10 seconds' moving image.

c. Background and character (image) color change

- Use different colors for background and character, respectively.

- Change colors themselves periodically.

d. Avoid combination of background and character with large different luminance.

1) Abnormal condition just means conditions except normal condition.

2) Black image or moving image is strongly recommended as a screen save.

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Product Specification

4. Lifetime in this spec. is guaranteed only when PD is used according to operating usages.

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˟

˟

˟

˟

˟

# APPENDIX-I-1

 Required signal assignment for Flat Link (DS90C385) Transmitter(Pin9=“L”)

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LD420WXN

Product Specification

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

TxCLKOUT­TxCLKOUT+

TxOUT0­TxOUT0+

TxOUT1­TxOUT1+

TxOUT2­TxOUT2+

TxOUT3­TxOUT3+

IS100-L30B-C23

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

100

100

100

100

100

9

RxIN0­RxIN0+

RxIN1­RxIN1+

RxIN2­RxIN2+

RxCLKIN­RxCLKIN+

RxIN3­RxIN3+

VESA / JEIDA

LCD Test

LCD Module

Notes:

1. The LCD module uses a 100 Ohm(ᆅ) resistor between positive and negative lines
of each receiver input.

2. Refer to LVDS transmitter data sheet for detail descriptions. (THC63LVD823 or Compatible)

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

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˟

˟

˟

˟

˟

# APPENDIX-I-2

 Required signal assignment for Flat Link (DS90C385) Transmitter(Pin9=“H”)

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LD420WXN

Product Specification

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

TxCLKOUT­TxCLKOUT+

TxOUT0­TxOUT0+

TxOUT1­TxOUT1+

TxOUT2­TxOUT2+

TxOUT3­TxOUT3+

IS100-L30B-C23

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

100

100

100

100

100

9

RxIN0­RxIN0+

RxIN1­RxIN1+

RxIN2­RxIN2+

RxCLKIN­RxCLKIN+

RxIN3­RxIN3+

VESA /

LCD Test

JEIDA

LCD Module

Notes:

1. The LCD module uses a 100 Ohm(ᆅ) resistor between positive and negative lines
of each receiver input.

2. Refer to LVDS transmitter data sheet for detail descriptions. (THC63LVD823 or Compatible)

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

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

# APPENDIX-II

LD420WXN-SAA1 – Pallet Ass’y

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LD420WXN

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

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غ

# APPENDIX-III-1

غ LCM Label

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LD420WXN

Product Specification

Model

LD420WXN
(SA)(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.

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# APPENDIX- III-2

 Pallet Label

LD420WXN

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LD420WXN

Product Specification

12

SAA1

RoHS Verified

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