LG.Philips LCD LC420WU2-SLA1 Specification

LC420WU2

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL



)

(

(

Preliminary Specification

)

Final Specification

MODEL

APPROVED BY

/

/

PROFILOBUYER

SIGNATURE

DATE

42.0” WUXGA TFT LCDTitle

LG.Philips LCD Co., Ltd.SUPPLIER

LC420WU2*MODEL

SLA1SUFFIX

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

J.H.Yoon / Senior.Manager

REVIEWED BY

B. Y. Park / Manager

SIGNATURE

DATE

/

Please return 1 copy for your confirmation with

your signature and comments.

Ver. 0.1 Dec. 11. 2006

PREPARED BY

K.W.Yang / Engineer

TV Product Development Dept.

LG. Philips LCD Co., Ltd

1 /28

Product Specification

CONTENTS

LC420WU2

Liquid Crystal Display

PageITEMNumber

COVER

CONTENTS

GENERAL DESCRIPTION1

ABSOLUTE MAXIMUM RATINGS2

ELECTRICAL SPECIFICATIONS3

ELECTRICAL CHARACTERISTICS3-1

INTERFACE CONNECTIONS3-2

SIGNAL TIMING SPECIFICATIONS3-3

COLOR DATA REFERENCE3-5

POWER SEQUENCE3-6

OPTICAL SPECIFICATIONS4

MECHANICAL CHARACTERISTICS5

RELIABILITY6

INTERNATIONAL STANDARDS7

1

2

3RECORD OF REVISIONS

4

5

6

6

8

12

13SIGNAL TIMING WAVEFORMS3-4

14

15

17

21

24

25

SAFETY7-1

EMC7-2

PACKING8

DESIGNATION OF LOT MARK8-1

PACKING FORM8-2

25

25

26

26

26

27PRECAUTIONS9

27MOUNTING PRECAUTIONS9-1

27OPERATING PRECAUTIONS9-2

28ELECTROSTATIC DISCHARGE CONTROL9-3

28PRECAUTIONS FOR STRONG LIGHT EXPOSURE9-4

28STORAGE9-5

28HANDLING PRECAUTIONS FOR PROTECTION FILM9-6

Ver. 0.1 Dec. 11. 2006

2 /28

Product Specification

RECORD OF REVISIONS

Preliminary Specification(First Draft) -Dec.11, 20060.1

LC420WU2

Liquid Crystal Display

DescriptionPageRevision DateRevision No.

Ver. 0.1 Dec. 11. 2006

3 /28

LC420WU2

Liquid Crystal Display

Product Specification

1. General Description

The LC420WU2 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 display type which is operating in the normally black mode. It has a 42.02 inch diagonally
measured active display area with WUXGA resolution (1080 vertical by 1920 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arrayed in vertical stripes.
Gray scale or the luminance of the sub-pixel color is determined with a 8-bit gray scale signal for each dot.
Therefore, it can present a palette of more than 16.7M(true) colors.
It has been designed to apply the 8-bit 2-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.

MEM

+12.0V

LVDS

2Port

DCR
Enable

VBR_OUT

CN1

(51pin)

Vbr-A

+24.0V

GND

Ext_PWM

CTRL

General Features

SDRAM

RGB

EEPROM

SCL

Timing Controller

[LVDS Rx + DCR + ODC

integrated]

Power Circuit

Block

Inverter

(CN2,CN3)

Mini-LVDS(RGB)

SDA

10CNs (High)

10CNs (High)

Source Driver Circuit

S1 S1920

G1

Gate Driver Circuit

TFT - LCD Panel

(1920 RGB 1080 pixels)

G1080

Back light Assembly (20 CCFL)

42.02 inches(1067.31mm) diagonalActive Screen Size

983.0(H) x 576.0 (V) x 51.0 mm(D) (Typ.)Outline Dimension

0.4845 mm x 0.4845 mmPixel Pitch

1920 horiz. by 1080 vert. Pixels, RGB stripe arrangementPixel Format

8-bit, 16.7 M colorsColor Depth

550 cd/m2 (Center 1point ,Typ.)Luminance, White

Viewing angle free ( R/L 178 (Typ.), U/D 178 (Typ.))Viewing Angle (CR>10)

Total 167.3 W (Typ.) (Logic=7.3 W, Inverter=160W [IBL=6.0 mA] ) Power Consumption

13.0K g (Typ.) Weight

Transmissive mode, Normally blackDisplay Mode

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

Ver. 0.1 Dec. 11. 2006

4 /28

LC420WU2

Liquid Crystal Display

Product Specification

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

Value

Parameter Remark

Symbol

Unit

MaxMin

Power Input

Voltage

LCM

Backlight inverter

Brightness Control Voltage

Operating Temperature

Storage Temperature

Operating Ambient Humidity

Storage Humidity

LCD

BL

Br

OP

ST

OP

ST

+14.0-0.3V

+28.0+21.6V

+5.25-0.3VON/OFFON/OFF Control Voltage

+5.00V

+500T

+50-20T

DC

V

DC

V

DC

V

DC



C



%RH9010H

%RH9010H

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.

at 25 ± 2 CV

C

Note 1

Ver. 0.1 Dec. 11. 2006

5 /28

LC420WU2

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 Is used for the CCFL
backlight and inverter circuit.

Table 2. ELECTRICAL CHARACTERISTICS

Value

Parameter Symbol

Circuit :

Power Input Voltage

LCD

MaxTypMin

V

12.612.011.4V

DC

NoteUnit

I

Power Input Current

Power Consumption

Rush current

LCD

LCD

RUSH

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

condition whereas mosaic pattern(8 x 6) is displayed and fVis 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 1ms (min.).

White : 255Gray
Black : 0Gray

=12.0V, 25 ± 2C, fV=60Hz

LCD

1mA793610-

2mA1066820-

1Watt9.57.3-P

3A3.0--I

Mosaic Pattern(8 x 6)

Ver. 0.1 Dec. 11. 2006

6 /28

Product Specification

Table 3. ELECTRICAL CHARACTERISTICS (Continued)

Parameter Symbol

Inverter :

IBLPower Supply Input Current

Input Voltage for

Control System

Signals

On/Off

Pulse Duty(PWM)
(Burst mode)

Lamp Current (ExtVbr-B = 100%)

Life Time

Audible Noise

On Vdc5.0-2.5V on
Off

I

O-MAX

I

O-TYP

I

O-MIN

2.5 V

0.0

50,000Boost =1.65V
40,000Boost = 3.3V

Values

MaxTypMin

245

5.0-High Level

0.6-Low Level

24Peak Level
27Overall Level

LC420WU2

Liquid Crystal Display

NotesUnit

Vdc26.224.022.8VBLPower Supply Input Voltage
Vdc28Unloading Input Voltage

ExtVbr-B = 100%

A7.36.7-

A8.57.9-

A13--IrushPower Supply Input Current(In-Rush)

W175160-PBLPower Consumption

Vdc0.80.0-0.3V off

%10020EXTVbr-BBrightness Adj(Burst mode)

DC

V

DC

Boost = 1.65V

ExtVbr-B = 100%

Boost = 3.3V

VBL = 22.8V

EXTVbr-B=100%

Boost = 1.65V

Boost = TypV(rms)760610480VoutLamp Voltage (ExtVbr-B = 100%)
Boost = MaxmA(rms)7.57.06.5

Boost = TYPmA(rms)6.56.05.5

Boost = MinmA(rms)5.55.04.5

Appendix DdB (A)

1

1Vp-p0.2-0.2Power Supply Input Voltage Ripple

1

1

5
1
2Vdc3.3-0.0VBRBrightness Adjust

3Hz145NTSC/PALPWM Frequency for NTSC & PAL

4Hrs

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 Vbr 1.65V, it is total power consumption.
The ripple voltage of the power supply input voltage is under 0.4 Vp-p. LPL recommend Input Voltage is

24.0V 5%.

2.

Brightness Control. This VBRVoltage control brightness.

FunctionVBR Voltage

Maximum Brightness (110%)3.3V

Minimum Brightness (90%)0V

3.

LPL recommend that the PWM freq. is

synchronized with the treble harmonic of Vsync signal of system.

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/ maximum lamp current ( Boost = 1.65V / 3.3V) on condition of continuous operating at 25 ± 2C

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

Ver. 0.1 Dec. 11. 2006

7 /28

LC420WU2

Liquid Crystal Display

Product Specification

3-2. Interface Connections

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

3-2-1. LCD Module

- LCD Connector(CN1): FI-R51S-HF(manufactured by JAE) or KN25-51P-0.5SH(manufactured by Hirose)

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

Table 4. MODULE CONNECTOR(CN1) PIN CONFIGURATION

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

Reserved(NC)

Reserved (NC)

Reserved (NC)

Reserved (NC)

Reserved (NC)

Reserved (NC)

Reserved (NC)

Reserved (NC)

Reserved (NC)

Reserved (NC)

GND

RO0N

RO0P

RO1N
RO1P

RO2N

RO2N

GND

ROCLKN

ROCLKP

GND
RO3N

RO3P

Reserved (NC)

Reserved (NC)

GND

DescriptionSymbolNo

No connection

No connection(Reserved for I2C)

No connection(Reserved for I2C)

No connection

No connection

No connection

No connection

No connection

No connection

No connection
Ground

FIRST CHANNEL 0-

FIRST CHANNEL 0+

FIRST CHANNEL 1-

FIRST CHANNEL 1+

FIRST CHANNEL 2-

FIRST CHANNEL 2+
Ground

FIRST CLOCK CHANNEL C-

FIRST CLOCK CHANNEL C+
Ground

FIRST CHANNEL 3-

FIRST CHANNEL 3+
No connection(Res for 10Bits)

No connection(Res for 10Bits)

GND

No

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

GND

RE0N

RE0P

RE1N

RE1P

RE2N

RE2P

GND

RECLKN

RECLKP

GND

RE3N

RE3P

Reserved (NC)

Reserved (NC)

GND

GND
GND

GND

GND

NC

V

LCD

V

LCD

V

LCD

V

LCD

-

SECOND CHANNEL 0-

SECOND CHANNEL 0+

SECOND CHANNEL 1-

SECOND CHANNEL 1+

SECOND CHANNEL 2-

SECOND CHANNEL 2+
Ground

SECOND CLOCK CHANNEL C-

SECOND CLOCK CHANNEL C+
Ground

SECOND CHANNEL 3-

SECOND CHANNEL 3+
No connection(Res for 10Bits)

No connection(Res for 10Bits)

Ground

Ground

Ground

NC
Power Supply +12.0V

Power Supply +12.0V

Power Supply +12.0V

Power Supply +12.0V

Note :

1. The pin no 44 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” )

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

3. All V

LCD

(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.

Description

GND

GND

GND

-

If not used, these pins are no connection.

Ver. 0.1 Dec. 11. 2006

8 /28

LC420WU2

Liquid Crystal Display

Product Specification

Table 5. Required signal assignment for Flat Link (Thine : THC63LVD823) Transmitter(Pin7=“L”)

Host System

24 Bit

R10/R20
R11/R21
R12/R22
R13/R23
R14/R24
R15/R25
R16/R26
R17/R27
G10/G20
G11/G21
G12/G22
G13/G23
G14/G24
G15/G25

G16/G26

G17/G27

B10/B20
B11/B21
B12/B22
B13/B23
B14/B24
B15/B25
B16/B26
B17/B27

Hsync
Vsync

Data Enable

CLOCK

THC63LVD823

or Compatible

53/81
54/82
57/83
58/84
59/85
60/86
51/79
52/80

63/91

64/92
65/93

66/94
67/95
68/96
61/89
62/90
73/99

74/100
75/1

76/2
77/5
78/6
69/97
70/98

7
8
9
10

TA1-TA1+

TB1-/TB1+

TC1-/TC1+

TCLK1-

TCLK1+

TD1-/TD1+

TA2-/TA2+

TB2-/TB2+

TC2-/TC2+

TCLK2-

TCLK2+

TD2-/TD2+

49
48
47

46
44
43

42

41

40

39

37

36

35
34

32

31

30

29
28

27

Ground

FI-R51S-HF

12
13
14
15
16
17
19
20
22
23

28
29
30
31
32
33
35
36
38
39

7

10

100



100



100



100



100



100



100



100



100



100



LCD Module

Timing

Controller

RxO0­RxO0+
RxO1­RxO1+
RxO2­RxO2+
RxOCLK­RxOCLK+
RxO3­RxO3+

RxE0­RxE0+
RxE1­RxE1+
RxE2­RxE2+
RxECLKIN­RxECLKIN+
RxE3­RxE3+

LG /

DISM

DCR Enable

Note:

1. The LCD module uses a 100 Ohm() 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.

Ver. 0.1 Dec. 11. 2006

9 /28

LC420WU2

Liquid Crystal Display

Product Specification

Table 6. Required signal assignment for Flat Link (Thine : THC63LVD823) Transmitter(Pin7=“H”)

Host System

24 Bit

R10/R20
R11/R21
R12/R22
R13/R23
R14/R24
R15/R25
R16/R26
R17/R27
G10/G20
G11/G21
G12/G22
G13/G23
G14/G24
G15/G25
G16/G26
G17/G27

B10/B20
B11/B21
B12/B22
B13/B23
B14/B24
B15/B25
B16/B26
B17/B27

Hsync
Vsync

Data Enable

CLOCK

THC63LVD823

or Compatible

51/79
52/80
53/81
54/82
57/83
58/84
59/85
60/86
61/89
62/90
63/91
64/92
65/93
66/94
67/95
68/96
69/97
70/98
73/99
74/100
75/1
76/2
77/5
78/6
7
8
9
10

TA1+/TA1-

TB1+/TB1-

TC1+/TC1-

TCLK1+
TCLK1-

TD1+/TD1-

TA2+/TA2-

TB2+/TB2-

TC2+/TC2-

TCLK2+
TCLK2-

TD2+/TD2

48

49
46

47
43

44

41

42

39
40

36

37
34

35

31
32
29
30

27

28

Vcc

FI-R51S-HF

12
13
14
15
16
17
19
20
22
23

28
29
30
31
32
33
35
36
38
39

7

10

100



100



100



100



100



100



100



100



LCD Module

Timing

Controller

RxO0-/RxO0+
RxO1-/RxO1+
RxO2-/RxO2+
RxOCLK­RxOCLK+
RxO3-/RxO3+

RxE0-/RxE0+
RxE1-/RxE1+
RxE2-/RxE2+
RxECLKIN­RxECLKIN+
RxE3-/RxE3+

LG /

DISM

DCR Enable

Note:

1. The LCD module uses a 100 Ohm() 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.

Ver. 0.1 Dec. 11. 2006

10 /28

Product Specification

3-2-2. Backlight Inverter

Master

-Inverter Connector : S14B-PH-SMC

(manufactured by JST) or 

- Mating Connector : PHR-14 or 

Table 7. INVERTER CONNECTOR PIN CONFIGULATION

Slave

-Inverter Connector : S12B-PH-SMC

-Mating Connector : PHR-12 or 

LC420WU2

Liquid Crystal Display

(manufactured by JST) or 

1

2

3

4

5

6

7

8

9

10

11

12

13

BL

BL

BL

BL

BL

Boost

ON/OFF

EXTVBR-

B

Power Supply +24.0VV

Power Supply +24.0VV

Power Supply +24.0VV

Power Supply +24.0VV

Power Supply +24.0VV

POWER GNDGND

POWER GNDGND

POWER GNDGND

POWER GNDGND

POWER GNDGND

0.0V ~ 3.3V

0.0V ~ 3.3V

Master

V

BL

V

BL

V

BL

V

BL

V

BL

GND

GND

GND

GND

GND

BR

External PWM

Slave

Don’t careOn/Off0.0V ~ 5.0VV

V

BL

V

BL

V

BL

V

BL

V

BL

GND

GND

GND

GND

GND

-

NoteDescriptionSymbolPin No

1

2Don’t careV

3, Open/High for B/L

on as default

4

14

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

2. Minimum Brightness : Boost = 0.0V Maximum Brightness : Boost = 3.3V
“OPEN” : Boost = 1.65V

3. Rising Edge : Lamp “ON” / Falling Edge : Lamp “OFF”

4. Pin#13 can be opened. ( if Pin #13 is open , EXTVBR-B is 100% )

5. Pin#14 can be opened. (Even though Pin #14 is GND or no connection, there is no effect on inverter operating)

6.

Each impedance of pin #11, 12 and 13 is 33

[M]

, 37

[K]

and 596

 

PCB

14

…

…

1

<Master>

Ver. 0.1 Dec. 11. 2006

…

[K].

1

12

<Slave>

-GNDPOWER GNDGND

5

PCB

…

11 /28

LC420WU2

Liquid Crystal Display

Product Specification

3-3. Signal Timing Specifications

Table 8 shows the signal timing required at the input of the LVDS transmitter. All of the interface signal timing

should be satisfied with the following specification for normal operation.

Table 8. TIMING TABLE for NTSC & PAL

Period

DCLK

Period

Horizontal Valid

Horizontal Blank

Hsync

Frequency

Width

Horizontal Back Porch

Horizontal Front Porch

CLK

HP

HV

-

H

WH

HBP

HFP

HP-tHV

[ DE (Data Enable) Only ]

NoteUnitMaxTypMinSymbolITEM

ns16.7713.4712.98t

MHz7774.2559.63-Frequency

t

130011001060t

960960960t

t

140t

HP-tHV

68.967.555.25f

-22-t

CLK

t

CLK

KHz

t

CLK

-8812t

-3014t

=148.5/2

t

t

t

Hz636047f

t

Hz-256t

t

HP

HP

HP

HP

HP

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

Vsync

Period

Vertical Valid

Frequency

Width

Vertical Back Porch

Vertical Front Porch

VP

VV

-Vertical Blank

V

WV

VBP

VFP

VP-tVV

114911251091t

1080-t

t

45t

VP-tVV

-12-t

-83t

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. 0.1 Dec. 11. 2006

12 /28

3-4. Signal Timing Waveforms

LC420WU2

Liquid Crystal Display

Product Specification

DCLK

First data

Second data

t

CLK

0.5 VDD

Invalid data

Invalid data

DE(Data Enable)

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

DE(Data Enable)

t

HV

t

HT

1 1080

t

VV

t

VT

Ver. 0.1 Dec. 11. 2006

13 /28

LC420WU2

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 9 provides a reference for color versus data input.

Table 9. COLOR DATA REFERENCE

Input Color Data

Basic
Color

RED

Color

Black 0 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0

Red (255)

Green (255)

Blue (255)

Cyan

Magenta

Yellow

White

MSB LSB

RED

GREEN

MSB LSB

BLUE

MSB LSB

B7 B6 B5 B 4 B 3 B2 B1 B0G7 G6 G5 G4 G3 G2 G1 G0R7 R6 R5 R4 R3 R2 R1 R0

0 0 0 0 0 0 0 00 0 0 0 0 0 0 01 1 1 1 1 1 1 1

0 0 0 0 0 0 0 01 1 1 1 1 1 1 10 0 0 0 0 0 0 0

1 1 1 1 1 1 1 10 0 0 0 0 0 0 00 0 0 0 0 0 0 0

1 1 1 1 1 1 1 11 1 1 1 1 1 1 10 0 0 0 0 0 0 0

1 1 1 1 1 1 1 10 0 0 0 0 0 0 01 1 1 1 1 1 1 1

0 0 0 0 0 0 0 01 1 1 1 1 1 1 11 1 1 1 1 1 1 1

1 1 1 1 1 1 1 11 1 1 1 1 1 1 11 1 1 1 1 1 1 1

0 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0RED (000) Dark

0 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 1RED (001)

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

0 0 0 0 0 0 0 00 0 0 0 0 0 0 01 1 1 1 1 1 1 0RED (254)

0 0 0 0 0 0 0 00 0 0 0 0 0 0 01 1 1 1 1 1 1 1RED (255)

GREEN

BLUE (000) Dark

BLUE

Ver. 0.1 Dec. 11. 2006

0 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0GREEN (000) Dark

0 0 0 0 0 0 0 00 0 0 0 0 0 0 10 0 0 0 0 0 0 0GREEN (001)

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

0 0 0 0 0 0 0 01 1 1 1 1 1 1 00 0 0 0 0 0 0 0GREEN (254)

0 0 0 0 0 0 0 01 1 1 1 1 1 1 10 0 0 0 0 0 0 0GREEN (255)

0 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0

0 0 0 0 0 0 0 10 0 0 0 0 0 0 00 0 0 0 0 0 0 0BLUE (001)

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

1 1 1 1 1 1 1 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0BLUE (254)

1 1 1 1 1 1 1 10 0 0 0 0 0 0 00 0 0 0 0 0 0 0BLUE (255)

14 /28

3-6. Power Sequence

3-6-1. LCD Driving circuit

Power Supply For LCD

V

LCD

0V

Product Specification

90% 90%

10%

T1T

2

T5T

LC420WU2

Liquid Crystal Display

10%

6

T

7

Interface Signal (Tx)

Option Signal

(DCR_Enable)

Power for Lamp

Table 10. POWER SEQUENCE

Parameter

Valid Data

T

3

T

8

T

4

T

9

Lamp ON

Value

MaxTypMin

--200T4

Unit

ms10-0.5T1

ms50-0.5T2

ms--200T3

ms

ms50-0.5T5

ms300-0.01T6

s--1.0T7

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

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.

5. If the on time of option signal(DISM or AI_Enable) precedes the on time of Power(VLCD),check the LCD logic
Power(Vcc) is under 0.8V, otherwise it will be happened abnormal display.

6. Flicker would come out when power on-off(T7=under 1s) is continuously tested over several ten-times

Ver. 0.1 Dec. 11. 2006

LCD

ms0 < T8 < T2T8

ms0 < T9 < T5T9

to 0V.

15 /28

3-6-2. Sequence for Inverter

LC420WU2

Liquid Crystal Display

Product Specification

Power Supply For Inverter

V

BL

10%

0V

V

ON/OFF

Boost

EXTV

BR-B

: 1. Lamp ON at PWM Rising Edge and Lamp OFF at PWM Falling Edge.

2. EXTVBR-B has Same sequence with Boost

3-6-3. Deep condition for Inverter

24V (typ.)

90%

0.7V

T1 T2 T3 T2

1000ms (Min) 1000ms (Min)

T4

T5

Lamp ON

T7

T4

T6

V

BL

VBL(Typ.) x 0.85

0 V

Table 11. Power Sequence for Inverter

Parameter

Values

MaxTypMin

-

Units

ms--20T1

ms--500T2

ms--200T3

ms--10T5

VBL(Typ) x 0.85ms10--T6

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

2. T4(max) is less than T2.

3. In T7 section, EXTV

BR-B

should be duty 100%.

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

: 24V

Remarks

1

2ms0T4

3ms--1000T7

Ver. 0.1 Dec. 11. 2006

16 /28

LC420WU2

Liquid Crystal Display

Product Specification

4. Optical Specification

Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 2 Hrs in a dark
environment at 252C. The specified optical values are measured at an approximate 50cm distance from the
LCD surface on condition that viewing angle of Φ and θ equal to 0 .
FIG. 1 shows additional information concerning the measurement equipment and method.

Optical Stage(x,y)

LCD Module

FIG. 1 Optical Characteristic Measurement Equipment and Method

Table 12. OPTICAL CHARACTERISTICS

SymbolParameter

Contrast Ratio

Surface Luminance, white

Luminance Variation

Response Time
(Gray-to-Gray)

Gray-to-Gray

Rise + decay

RED

GREEN

Color Coordinates
[CIE1931]

BLUE

WHITE

WH

WHITE

BLACK

R +

Rx

Ry

Gx

Gy

Bx

By

Wx

Wy

Tr

Pritchard 880 or
equivalent

50cm

Ta= 25

2

C

, V

=12.0V, fV=60Hz, Dclk=148.5MHz VBR=1.65V

LCD

Value

NoteUnit

MaxTypMin

-800600CR

-550400L

2

1.6--5Pδ

5P

D

1.7--δ

168-G to G

3218-Tr

ms

0.638

0.340

0.279

Typ

-0.03

0.611

0.146

Typ

+0.03

0.062

0.285

0.293

1

2cd/m

3

4

Viewing Angle (CR>10)

x axis, right(φ=0)

x axis, left (φ=180)

y axis, up (φ=90)

y axis, down (φ=270)

Ver. 0.1 Dec. 11. 2006

2.2

-8985θr

-8985θl

-8985θu

5degree

-8985θd

6Gray Scale

17 /28

Note :

LC420WU2

Liquid Crystal Display

Product Specification

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

Contrast Ratio =

Surface Luminance with all white pixels
Surface Luminance with all black pixels

Measure Position : Center 1-point

2. Surface Luminance(

L

) is the luminance value measured at an approximate 50cm distance from

WH

the center 1-point of LCD surface as all pixels displaying white. See FIG. 2 for more information.

3. The variation of surface luminance , δ WHITE and δ BLACK are defined as :

δ WHITE(5P) = Maximum(L
δ BLACK(5P) = Maximum(L

Where L

on1

to L

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

on5

on1,Lon2

on1,Lon2

, L
, L

on3

on3

, L

, L

on4

on4

, L

) / Minimum(L

on5

, L

) / Minimum(L

on5

on1,Lon2

on1,Lon2

, L
, L

on3

on3

, L

, L

on4

on4

, L

, L

on5

on5

)
)

For more information, see the FIG. 2.

4. Response time is defined as the required time for the transition from G(N) to G(M) (Rise Time, TrR)
and from G(M) to G(N) (Decay Time, TrD). For additional information see the FIG. 3. (N<M)

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 13.

Table 13. GRAY SCALE SPECIFICATION

Gray Level

L0

L15

L31

L47

L63

L79

L95

L111

L127

L143

L159

L175

L191

L207

L223

L239

L255

Luminance [%] (Typ.)

0.19

0.39

1.16

2.61

4.80

7.77

11.6

16.2

21.7

28.2

35.5

43.8

53.0

63.3

74.5

86.7

100

Ver. 0.1 Dec. 11. 2006

18 /28

Product Specification

Measuring point for surface luminance & measuring point for luminance variation.







LC420WU2

Liquid Crystal Display







A : H / 4 mm



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)”.

T

r

R

100

90



T

r

D

B : V / 4 mm

H : 930.24 mm
V : 523.26 mm

@ H,V : Active Area

Optical
Response

10

0

Ver. 0.1 Dec. 11. 2006

Gray(N)

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

FIG. 3 Response Time

Gray(M)

Gray(N)

19 /28

Dimension of viewing angle range

φ

= 180°, Left

Product Specification

Normal

E

θ

φ

Y

φ

= 90°, Up

φ

= 0°, Right

LC420WU2

Liquid Crystal Display

φ

= 270°, Down

FIG. 4 Viewing Angle

Ver. 0.1 Dec. 11. 2006

20 /28

LC420WU2

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 14. MECHANICAL CHARACTERISTICS

ValueItem

983.0 mmHorizontal

Outline Dimension

Bezel Area

Active Display Area

Surface Treatment

13.0Kg (Typ.), 14.0Kg (Max.)Weight

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

576.0 mmVertical

51.0 mmDepth

939.0 mmHorizontal

531.0 mmVertical

930.24 mmHorizontal

523.26 mmVertical

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

Ver. 0.1 Dec. 11. 2006

21 /28



LC420WU2

Liquid Crystal Display

Product Specification

Ver. 0.1 Dec. 11. 2006

22 /28



LC420WU2

Liquid Crystal Display

Product Specification

Ver. 0.1 Dec. 11. 2006

23 /28

Product Specification

6. Reliability

Table 15. ENVIRONMENT TEST CONDITION

5

Vibration test
(operating)

LC420WU2

Liquid Crystal Display

ConditionTest ItemNo.

Ta= 50C 240hHigh temperature storage test1

Ta= -20C 240hLow temperature storage test2

Ta= 50C 50%RH 240hHigh temperature operation test3

Ta= 0C 240hLow temperature operation test4

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

One time each direction

Shock level : 50Grms

6

8

Shock test
(operating)

Altitude operating

storage / shipment

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

One time each direction

Ta= 40 C ,90%RHHumidity condition Operation7

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

Ver. 0.1 Dec. 11. 2006

24 /28

Product Specification

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, 7thEdition CB-scheme and EN 60065:2002,
Safety requirements for Audio, Video and Similar Electronic Apparatus..

7-2. EMC

LC420WU2

Liquid Crystal Display

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) CISPR22 “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. 0.1 Dec. 11. 2006

25 /28

8. Packing

8-1. Designation of Lot Mark

a) Lot Mark

A B C D E F G H I J K L M

A,B,C : SIZE(INCH)
D : YEAR E : MONTH
F : PANEL CODE G : FACTORY CODE
H : ASSEMBLY CODE I,J,K,L,M : SERIAL NO.

Note

1. YEAR

LC420WU2

Liquid Crystal Display

Product Specification

Year

Mark

200012001

0

2002320034200452005

2

2. MONTH

Month

Mark

Apr5May

4

Jun

6

Jul

7

Aug9Sep

8

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.

2006

6

Oct

A

2007999897

Nov

7987

DecMarFebJan

B

C421

8-2. Packing Form

a) Package quantity in one Pallet : 12 pcs

b) Pallet Size : 1150 

Ver. 0.1 Dec. 11. 2006

26 /28

LC420WU2

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 chlorine type materials for the cover case are not desirable because the former

generates corrosive gas of attacking the polarizer at high temperature and the latter causes circuit break
by electro-chemical reaction.

(6) Do not touch, push or rub the exposed polarizers with glass, tweezers or anything harder than HB

pencil lead. And please do not rub with dust clothes with chemical treatment.

Do not touch the surface of polarizer for bare hand or greasy cloth.(Some cosmetics are detrimental

to the polarizer.)
(7) When the surface becomes dusty, please wipe gently with absorbent cotton or other soft materials like

chamois soaks with petroleum benzine. Normal-hexane is recommended for cleaning the adhesives
used to attach front / rear polarizers. Do not use acetone, toluene and alcohol because they cause
chemical damage to the polarizer.

(8) Wipe off saliva or water drops as soon as possible. Their long time contact with polarizer causes

deformations and color fading.

(9) Do not open the case because inside circuits do not have sufficient strength.

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 causes metallic foreign material and deal LCM a fatal blow)

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

Ver. 0.1 Dec. 11. 2006

27 /28

LC420WU2

Liquid Crystal Display

Product Specification

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.

(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.

Ver. 0.1 Dec. 11. 2006

28 /28