LG Display LC420WUB-SCG1 Specification

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LC420WUB

Product Specification

SPECIFICATION
FOR
APPROVAL

(  ) Preliminary Specification

) Final Specification (

Title

BUYER

MODEL

APPROVED

BY

/

/

General

SIGNATURE
DATE

42.0” WUXGA TFT LCD

SUPPLIER

*MODEL

SUFFIX

*When you obtain standard approval,
please use the above model name without suffix

APPROVED BY

K.

S.Nah /Senior Manager

REVIEWED BY

B. Y. Park / Manager

LG DISPLAY Co., Ltd.

LC420WUB

SCG1

SIGNATURE
DATE

PREPARED BY

/

Please return 1 copy for your confirmation with

your signature and comments.

Ver0.1

J.H.Kim / Engineer

PD Product Development Dept.
LG Display Co., Ltd

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Product Specification

CONTENTS

ITEM

LC420WUB

Page

1

CONTENTS

RECORD OF REVISIONS

1

2

3

3-1

3-2

3-3

3-4

3-5

3-6

4

5

6

7

GENERAL DESCRIPTION

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL SPECIFICATIONS

ELECTRICAL C

INTERFACE CO

SIGNAL TIMING SPECIFICATIONS

SIGNAL TIMING

COLOR DATA REFERENCE

POWER SEQUENCE

OPTICAL SPECIFICATIONS

MECHANICAL CHARACTERISTICS

RELIABILITY

INTERNATIONAL STANDARDS

HARACTERISTICS

NNECTIONS

WAVEFORMS

2

3

4

5

6

6

8

10

11

12

13

15

19

22

23

8

9

Ver0.1

7-1

7-2

8-1

8-2

9-1

9-2

9-3

9-4

9-5

9-6

9-7

SAFETY

EMC

PACKING

DESIGNATION OF LOT MARK

PACKING FORM

PRECAUTIONS

MOUNTING PRECAUTIONS

OPERATING PRECAUTIONS

ELECTROSTATIC DISCHARGE CONTROL

PRECAUT

STORAGE

HANDLING PRECAUTIONS FOR PROTECTION FILM

APPROPRIATE

IONS

FOR

NG LIGHT EXPOSURE

STRO

ONDITION FOR PUBLIC DISPLAY

C

23

23

24

24

24

25

25

25

26

26

26

26

26

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LC420WUB

Product Specification

RECORD OF REVISIONS

Revision No.

0.0

0.1

Revision Date

Feb, 23, 2010

April.14. 2010

Page

-

6

15

17

22

Preliminary Specification

Electrical characteristics in Table 2

Power Sequence in Table 9

Optical Characteristics in Table 11.

Change LCM Drawing

Description

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1. General Description

LC420WUB is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) 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 inch diagonally measured
active dis pla y area with W UXGA resolution (1080 vertical by 1920 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 8bit or 10-bit gray scale signal for
each dot, thus presenting a palette of more than 1.06Billion of colors.
It has been designed to apply the 10-bit 2 port LVDS interface.
It is intended to support Public Display where high brightness, super wide viewing angle, high color gamut,
high color depth and fast moving picture response time are important.

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LC420WUB

Product Specification

OPC Enable
ExtVBR-B
VBR-B out

LVDS

2Port

LVDS
Select

Bit
Select

+12.0V

LVDS 1,2

CN1

(51pin)

VBR-A , VBR-B

Status

+24.0V, GND

General Features

Active Screen Size

Outline Dimension

Pixel Pitch
Pixel Format
Color Depth
Luminance, White

Optio n
signal

I2C

EEPROM

SCL

Timing Controller

LVDS Rx + OPC + DGA + ODC
IntegratedControl
Signals

Power Ci uit rc
Block

SDA

Inverter

42.02 inches(1067.31mm) diagonal

956.4(H) x 549.4 (V) x 53.5 mm(D) (Typ.)

0.4845 mm x 0.4845 mm

1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement

10bit (D) ,

500 cd/m

Mini-LVDS(RGB)

Power Signals

1.06Billon colors

2 (Center 1point ,Typ.)

3PinX1

CN(High)

3PinX1CN(High)

Source Driver Circuit

S1

G1

TFT - LCD Panel

(1920 × RGB × 1080 pixels)
[Gate In Panel]

G1080

Back light Assembly

S1920

Viewing Angle (CR>10)

Power Consumption

Weight
Display Mode

Surface Treatment
Possible Display Type

Ver0.1

Viewing angle free ( R/L 178 (

Total 114 W

10.5Kg (Typ.)

Transm

d coating(3H)

Har

Landscape and Portrait Enabled

(Typ.) (Logic =5.3W, Inverter = 109W [VBR-A=1.65V] )

issive mode, Normally black

, Anti-glare treatment of the front polarizer(Haze10%)

Typ.), U/D 178 (Typ.))

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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

Parameter

Power
Input
Voltage

LCM

Backlight inverter

Symbol

VLCD

VBL

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Product Specification

Value

Min

-0

-0

.3

.3

Max

+14.0

+27.

LC420WUB

Unit

VDC

0

VDC

Remark

at 25 ± 2 °C

ON/OFF Control Voltage

Brightness Control Voltage

Operating Temperature

Storage Temperature

Operating Ambient Humidity

Storage Humidity

VON/OFF

VBR

TOP

TST

HOP

HST

.3

-0

0

0

-2

0

10

10

+5. 5

+5.0

+50

+60

90

90

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

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

90%

60

Wet Bu

lb

Temperature [C]

10

0

30

20

50

40

60%

40%

10%

VDC

VDC

°C

%RH

%RH

Humidity
[(%)RH]

°C

ote 1

Storage

Operation

0

-20

Dry Bulb Temperature [C]

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807060504030

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LC420WUB

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 Is used for the CCFL
backlight and inverter circuit.

Table 2. ELECTRICAL CHARACTERISTICS

Value

Paramete

Circuit :

Power Input Voltage

Power Input Current

Power Consumption

Rush current

otes : 1. The specified current and power consumption are under the VLCD=12.0V, 25 ± 2°C, fV=60Hz

condition whereas mosaic pattern(8 x 6) is displayed and fV is the frame frequency.

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 0.5ms (min)

r

Symbol

MaxTypMin

VLCD

ILCD

PLCD

11.4

455

668

12.

0

650(TBD)

955(TBD)

BD)

5.3(T

-IRUSH

12.6

845

1242

5.0-

VDC

mA

Watt

A

oteUnit

1mA

2

1

3

Ver0.1

White : 1023Gray
Black : 0Gra

y

Mosaic Pattern(8 x 6)

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Table 3. ELECTRICAL CHARACTERISTICS (Continue)

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LC420WUB

Product Specification

rameter

Pa

Inverter :
Power Supply Input Voltage
Power Supply Input Voltage Ripple

Power Supply
Input Current

Power Supply Input Current (In-Rush)

Power Consumption

Input Voltage for
Control System
Signals

Lamp:

Unit Symbol

After Aging

Before Aging

Brightness Adjust
On

On/Off

Off
Brightness Adjust

Discharge Stabilization Time

Life Time

Min Max

IBL_A

IBL_B

VBR-A

n

f

f

0.0 1.65 3.3

2.

VBR-B

TS 3

50,000

Values
Typ

Vp-p

5.4

7

--9.5Irush

- VBR-A = 1.65V … 1PBL

5-5.0V o

0-3.3

109 112.8

5.

6.8

7.8

7

3

Vdc VBL 22.8 24.0 25.2 1

--0.5 1

A

VBR-A = 1.65V … 1-4.5

A

VBR-A = 3.3V … 1-4.

VBR-A = 1.65V … 2-5.9

A

VBR-A = 3.3V … 2-6.9

A

V
V

A

VBR-A = 1.65V

W

Vdc

Vdc

Vdc -0.3 0.0 0.8V o

V

min
Hrs

otes :

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
24Vand VBR (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. LGD 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%.
TS is the time required for the brightness of the center of the lamp to be not less than 95% at typical current.
The screen of LCD module may be partially dark by the time the brightness of lamp is stable after turn on.

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

5. The duration of rush current is about 10ms.

otes

BL = 22.8V
BR-B = 3.3V

4

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3-2. Interface Connections

This LCD module employs two kinds of interface connection, a 51-pin connector is used for the module
electronics and Master 14-pin and Slave 12-pin connectors are used for the integral backlight system.

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LC420WUB

Product Specification

3-2-1. LCD Module

- LCD Connector(CN1): FI-R51S-HF(manufactu

red by JAE)

or KN25-51P-0.5SH(manufactured b

- Mating Connector : FI-R51HL(JAE) or compatible

Table 4. MODULE CONNECTOR(CN1) PIN CONFIGURATION

Description

Ground

o Connection
o Connection

o Connection
o Connection

No Connection
‘H’ =JEIDA , ‘L’ = ESA V
External VBR

OPC Output (From LCM)

ble , ‘L’ or ‘NC’ = Disable

FIRST CHANNEL 0-

FIRST CHANNEL 0

FIRST CHANNEL 1-

FIRST CHANNEL 1+

FIRST CHANNEL 2-

FIRST CHANNEL 2+
Gr

Gr

ound

FIRST CHANNEL 3-

FIRST CHANNEL 3+

Ground

ound

10bit D)

0bit D)1

+

10
11
12
13
14
15
16
17

18
19

20
21
22

23
24
25
26

o

1
2

3
4

5
6

7
8

9

Symbol

GND

C
C

C

NC
LVDS Select
VBR_EXT

OPC _OUT

OPC Enable

GND
RO0N
RO0P
RO1N

RO1P

RO2N
RO2P

GND

ROCLKN
ROCLKP

GND
RO3N

RO3P
RO4N
RO4P

Reserved

‘H’ = Ena

FIRST CLOCK CHANNEL C-

FIRST CLOCK CHANNEL C+

FIRST CHANNEL 4- (For

FIRST CHANNEL 4+ (For
No connection or GND

y Hirose)

o

27

28
29

30

31

32
33
34

35

36

37

38

39

40

41

42

43
44

45

46
47
48

49

50

51

-

Symbol

Bit S

elect

RE0N
RE0P

RE1N

RE1P

RE2N
RE2P
GND

RECLKN

RECLKP

GND

RE3N

RE3P

RE4N

RE4P

Reser

Reserved
GND
GND

GND
NC
VLCD

VLCD

VLCD

VLCD

ved

-

ion

SECOND CLOCK CHANNEL C-

SECOND CLOCK CHANNEL C+

SECOND CHANNEL 4- (For 10bit D)

SECOND CHANNEL 4+ (Fo 10bit D)r
No connection or GND

Des

‘L’=8bit,’H’=10bit (D)

SECOND CHANNEL 0­SECOND CHANNEL 0+

SECOND CHAN

SECOND CHANNEL 1+

SECOND CHANNEL 2­SECOND CHAN
Ground

Ground

SECOND CHANNEL 3-

SECOND CHANNEL 3+

cript

ion

NEL 1-

NEL 2+

o connection or GND

Ground
Ground

Ground
No connection
Power Supply +12.0V

Power Supply +12.0V

Power Supply +12.0V

Power Suppl

y +12.0V

-

otes :

1. The pin no 47 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. LGD recommends “NSB”. ( AGP : “VCC” or “OPEN” / NSB : “GND” )

2. All GND(ground) pins should be connected together to the LCD module’s metal frame.

3. All VLCD (power input) pins should be connected together.

4. All Input levels of LVDS signals are based on the IEA 664 Standard.

5. Specific pins(pin No. #1~#10) are used for internal data process of the LCD module.
If not used, these pins are no connection.

6. If OPC function should be enable(‘H’), 10th pin must be connected to serial resistor which value is under
1k ohm.

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3-2-2. Backlight Inverter

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

- Mating Connector : PHR-14 or Equivalent

Table 5. INVERTER CONNECTOR PIN CONFIGULATION
MasterPin NoSymbolDescription

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LC420WUB

Product Specification

y

Slave

ote

1

2

3

4

5

6

7

8

9

10

11

12

13

14

VBL

VBL

VBL

VBL

VBL

GND

GND

GND

GND

GND

VBR-A

VON/OFF

VBR-B

Status

Power Supply +24.0V

Power Supply +24.0V

Power Supply +24.0V

Power Supply +24.0V

Power Supply +24.

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

ormal : Upper 3.0V

Abnormal : Under 0.7V

0V

VBL

VBL

VBL

VBL

VBL

GND

GND

GND

GND

GND

VBR-A

On/Of

VBR-B

Status

f

VBL

VBL

VBL

VBL

VBL

GND

GND

GND

GND

GND

Don’t care

Don’t care

-

-

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

2. If Pin #11 is open, VBR-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 : VBR-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 154[া], 28[া], 117[া]

1

2, 3

3

4

ƹ Rear view of LCM

PCB

14

…

1

…

1

…

12

<Master>

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<Slave>

…

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LC420WUB

Product Specification

3-3. Sig

nal Timing Specifications

Table 6 shows the signal timing required at the input of the LVDS transmitt

er. All of the interface signal

timings should be satisfied with the following specification for normal operation.

Table 6-1. TIMING TABLE for NTSC (DE Only Mode)

ITEM

Display Period

Blank Horizontal

Total

Display Period

Blank Vertical

Total

DCLK

Horizontal Frequency

Vertical

Symbol

tHV

tHB

tHP

tVV

tVB

tVP

fCLK

fH

fV

Min

-

100

1060

-

11

1091

70

65

57

Typ

960

140

1100

1080

45

1125

74.25

67.5

60

Max

-

240

1200

-

69

1149

77

70

63

Unit

tclk

tclk

tclk

tHP

tHP

tHP

MHz

KHz

Hz

ote

2200/2

148.5/2

Table 6-2. TIMING TABLE for PAL (DE Only Mode)

Symbol

tHV

tHB

tHP

tVV

tVB

tVP

fCLK

fH

fV

ote

ITEM

Display Period

Blank Horizontal

Total

Display Period

Blank Vertical

Total

DCLK

Horizontal Frequency

Vertical

The Input of HSYNC & VSYNC signal does not have an effect on normal operation(DE Only Mode).
The performance of the electro-optical characteristics may be influenced by variance of the vertical
refresh rate.

Ver0.1

Min

100

1060

228

1308

70

65

47

Typ

-

-

960

140

1100

1080

270

1350

74.

67.

50

25

5

Max

240

1200

300

1380

77

70

53

Unit

-

-

tclk

tclk

tclk

tHP

tHP

tHP

MHz

KHz

Hz

ote

2200/2

148.5/2

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Product Specification

3-4. LVDS

3-4-1. LVDS Input Signal Timing Diagram

DE, Data

Signal Specification

0.7VDD

0.3VDD

tCLK

DCLK

First data

Second data

Invalid data

Invalid data

DE(Data Enable)

0.5 VDD

Valid data

Pixel 0,0

Pixel 1,0

Pixel 2,0

Valid data

Pixel 3,0

Invalid data

Invalid data

DE(Data Enable)

Ver0.1

tHP

1

tVP

tHV

tVV

1080

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