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

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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

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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]

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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).

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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

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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.

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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

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