LG Display LD420EUB-SDA1 Specification

LD420EUB

Product Specification

SPECIFICATION

FOR

APPROVAL

)

(
(

Preliminary Specification

●

)

Final Specification

Title 42.0” WUXGA TFT LCD

BUYER Panasonic

MODEL

APPROVED BY

/

/

/

SIGNATURE

DATE

SUPPLIER LG DISPLAY Co., Ltd.

*MODEL LD420EUB

SUFFIX SDA1

APPROVED BY

O. H. Lee

/ Chief Senior Engineer

REVIEWED BY

J.B. Chun

/ Senior Engineer

PREPARED BY

K.B. Park
/ Engineer

SIGNATURE

DATE

Please return 1 copy for your confirmation with

your signature and comments.

Ver. 0.0 1 / 38

PD Product Design Dept.

LG Display Co., Ltd

Product Specification

CONTENTS

LD420EUB

Number ITEM

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 LVDS SIGNAL SPECIFICATIONS
3-5 COLOR DATA REFERENCE

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

Page

1
2
3
4
5
6
6

8
11
12
15
16
18
22
25

7 INTERNATIONAL STANDARDS

7-1 SAFETY
7-2 EMC
7-3 ENVIRONMENT

8 PACKING

8-1 INFORMATION OF LCM LABEL

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
9-7 APPROPRIATE CONDITION FOR PUBLIC DISPLAY

26
26
26
26
27
27
27
28
28
28
29
29
29
29
29

Ver. 0.0 2 / 38

Product Specification

RECORD OF REVISIONS

Revision No. Revision Date Page Description

0.0 Nov. 2, 2012 - Preliminary specification (First Draft)

LD420EUB

Ver. 0.0 3 / 38

LD420EUB

Product Specification

1. General Description

The LD420EUB is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED)
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 10-bit gray scale signal for each dot.
Therefore, it can present a palette of more than 1.06Bilion 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 response time are important.

Mini-LVDS(RGB)

Control
Signals

Power Signals

Source Driver Circuit

S1 S1920

G1

TFT - LCD Panel

(1920 × RGB × 1080 pixels)

[Gate In Panel]

G1080

LVDS

2Port

LVDS
Select

Bit
Select

+12.0V

CN1

(51pin)

LVDS 1,2

Option
signal

I2C

EEPROM

SCL

SDA

Timing Controller

LVDS Rx + ODC

Integrated

Power Circuit

Block

Back light Assembly

+24.0V, GND, On/Off

LED Driver

General Features

Active Screen Size 42.02 inches(1067.31mm) diagonal
Outline Dimension
Pixel Pitch 0.4845 mm x 0.4845 mm
Pixel Format 1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement
Color Depth 10bit(D), 1.06Billon colors
Luminance, White 450 cd/m2 (Center 1point ,Typ.)
Viewing Angle (CR>10) Viewing angle free ( R/L 178 (Min.), U/D 178 (Min.)
Power Consumption Total 90.8W (Typ.) [Logic= 7.6W, LED Driver=83.2W(ExtVbr_B=100% )]
Weight 9.2 Kg (Typ.)
Display Mode Transmissive mode, Normally black
Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer (Haze 10%)
Possible Display Type Landscape and Portrait Enabled

958.4(H) × 551.3(V) X 10.8(B)/24.0 mm(D) (Typ.)

Ver. 0.0 4 / 38

LD420EUB

Product Specification

2. Absolute Maximum Ratings

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

Table 1. ABSOLUTE MAXIMUM RATINGS

Parameter Symbol

Power Input Voltage

Driver Control Voltage

T-Con Option Selection Voltage VLOGIC -0.3 +4.0 VDC
Operating Temperature TOP 0 +50
Storage Temperature TST -20 +60
Panel Front Temperature TSUR - +68
Operating Ambient Humidity HOP 10 90 %RH

Storage Humidity HST 10 90 %RH

Note

1. Ambient temperature condition (Ta = 25  2 °C )

LCD Circuit VLCD -0.3 +14.0 VDC
Driver VBL -0.3 + 27.0 VDC
ON/OFF VOFF / VON -0.3 +5.5 VDC
Brightness EXTVBR-B 0.0 +5.5 VDC

Value

Unit Note

Min Max

°C
°C
°C

2. Temperature and relative humidity range are shown in the figure below.
Wet bulb temperature should be Max 39°C, and no condensation of water.

3. Gravity mura can be guaranteed below 50°C condition.

4. The maximum operating temperatures is based on the test condition that the surface temperature

of display area is less than or equal to 68°C with LCD module alone in a temperature controlled chamber.
Thermal management should be considered in final product design to prevent the surface temperature of
display area from being over 68℃. The range of operating temperature may be degraded in case of
improper thermal management in final product design.

90%

1

2,3

4

2,3

60

60%

Wet Bulb
Temperature [°C]

30

20

10

0

10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [°C]

Ver. 0.0 5 / 38

50

40

40%

Humidity [(%)RH]

10%

Storage

Operation

LD420EUB

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 LED
backlight and LED Driver circuit.

Table 2. ELECTRICAL CHARACTERISTICS

Parameter Symbol

Min Typ Max

Circuit :

Power Input Voltage VLCD 10.8 12.0 13.2 VDC

- 630 820 mA 1

Power Input Current ILCD

- 940 1,222 mA 2
Power Consumption PLCD 7.6 9.9 Watt 1
Rush current IRUSH - - 3.0 A 3

Value

Unit Note

Note

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

=12.0V, Ta=25  2°C, fV=60Hz condition,

LCD

and 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.).

4. Ripple voltage level is recommended under ±5% of typical voltage.

White : 1023 Gray

Black : 0 Gray

Mosaic Pattern(8 x 6)

Ver. 0.0 6 / 38

Product Specification

Table 3. ELECTRICAL CHARACTERISTICS (Continue)

LD420EUB

Parameter Symbol

LED Driver :

Power Supply Input Voltage VBL 22.8 24.0 25.2 Vdc 1

Power Supply Input Current IBL

Power Supply Input Current (In-Rush) In-rush - - 5.0 A

Power Consumption PBL -

On/Off

Input Voltage for

Control System

Signals

Life Time 50,000 - Hrs 2

Brightness Adjust Ext V

PWM Frequency for
NTSC & PAL

Pulse Duty Level
(PWM)

On V on 2.5 - 5.0 Vdc
Off V off -0.3 0.0 0.7 Vdc

BR-B

PAL 100 Hz 3

NTSC 120 Hz 3

High Level 2.4 - 5.0

Low Level 0.0 - 0.7

Min Typ Max

-

1 - 100 %

Values

3.47 3.73 A 1

83.2 89.5

Unit Notes

VBL = 22.8V
Ext V

BR-B

W 1

On Duty

Vdc
Vdc

HIGH : on duty

LOW : off duty

= 100%

4

6

notes :

1. Electrical characteristics are determined after the unit has been „ON‟ and stable for approximately 60

minutes at 25±2°C. The specified current and power consumption are under the typical supply Input voltage
24Vand VBR (ExtVBR-B : 100%), it is total power consumption.

2. The life time is determined as the time which luminance of the LED is 50% compared to that of initial
value at the typical LED current (ExtVBR-B :100%) on condition of continuous operating in LCM state at
25±2°C. (Min @ L50B10)

3. LGD recommend that the PWM freq. is synchronized with One time harmonic of V_sync signal of system.
Though PWM frequency is over 120Hz (max 252Hz), function of LED Driver is not affected.

4. The duration of rush current is about 200ms. This duration is applied to LED on time.

5. Even though inrush current is over the specified value, there is no problem if I2T spec of fuse is satisfied.

6. ExtV

After Driver ON signal is applied, ExtV

signal have to input available duty range and sequence.

BR-B

After that, ExtV

1% and 100% is possible

BR-B

should be sustained from 5% to 100% more than 500ms.

BR-B

For more information, please see 3-6-2. Sequence for LED Driver.

Ver. 0.0 7 / 38

Product Specification

3-2. Interface Connections

This LCD module employs two kinds of interface connection, 51-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(CN1): FI-RE51S-HF(manufactured by JAE) or compatible

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

Table 4-1. MODULE CONNECTOR(CN1) PIN CONFIGURATION

No Symbol Description No Symbol Description

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

NC No Connection

NC No Connection

NC No Connection

NC No Connection

NC No Connection

NC No Connection

LVDS Select

NC No Connection

NC No Connection

NC No Connection

GND

R1AN

R1AP

R1BN

R1BP

R1CN

R1CP

GND

R1CLKN

R1CLKP

GND

R1DN

R1DP

R1EN

R1EP

Reserved

‘H’ =JEIDA , ‘L’ or NC = VESA

Ground

FIRST LVDS Receiver Signal (A-)

FIRST LVDS Receiver Signal (A+)

FIRST LVDS Receiver Signal (B-)

FIRST LVDS Receiver Signal (B+)

FIRST LVDS Receiver Signal (C-)

FIRST LVDS Receiver Signal (C+)
Ground

FIRST LVDS Receiver Clock Signal(-)

FIRST LVDS Receiver Clock Signal(+)
Ground

FIRST LVDS Receiver Signal (D-)

FIRST LVDS Receiver Signal (D+)

FIRST LVDS Receiver Signal (E-)

FIRST LVDS Receiver Signal (E+)
No connection or GND

27

Bit Select

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

- - -

R2AN

R2AP

R2BN

R2BP

R2CN

R2CP

GND

R2CLKN

R2CLKP

GND

R2DN

R2DP

R2EN

R2EP

Reserved

Reserved

GND Ground

GND Ground

GND Ground

NC No connection

VLCD Power Supply +12.0V

VLCD Power Supply +12.0V

VLCD Power Supply +12.0V

VLCD Power Supply +12.0V

‘H’ or NC= 10bit(D) , ‘L’ = 8bit

SECOND LVDS Receiver Signal (A-)

SECOND LVDS Receiver Signal (A+)

SECOND LVDS Receiver Signal (B-)

SECOND LVDS Receiver Signal (B+)

SECOND LVDS Receiver Signal (C-)

SECOND LVDS Receiver Signal (C+)
Ground

SECOND LVDS Receiver Clock Signal(-)

SECOND LVDS Receiver Clock Signal(+)
Ground

SECOND LVDS Receiver Signal (D-)

SECOND LVDS Receiver Signal (D+)

SECOND LVDS Receiver Signal (E-)

SECOND LVDS Receiver Signal (E+)
No connection or GND

No connection or GND

LD420EUB

Note:

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

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

3. All input levels of LVDS signals are based on the EIA 644 Standard.

4. #1~#6, #8~#10 & # 47(No connection) These pins are reserved only for LGD (Do not connect)

Ver. 0.0 8 / 38

Product Specification

3-2-2. Backlight Module

Master

LED Driver Connector

: 20022WR - H14B2(Yeonho) or compatible

Mating Connector

: 20022HS - 14B2 or compatible

Table 5. LED DRIVER CONNECTOR PIN CONFIGURATION

Pin No Symbol Description Note

LD420EUB

1
2
3
4
5
6
7
8

9
10
11
12
13
14

V

BL

V

BL

V

BL

V

BL

V

BL

GND
GND
GND
GND
GND

Status

VON/OFF

NC Don‟t care

EXT V

BR-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
Back Light Status 2
Backlight ON/OFF control

External PWM 3

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

2. Normal : Low (under 0.7V) / Abnormal : Open

3. High : on duty / Low : off duty, Pin#14 can be opened. ( if Pin #14 is open , EXT V

4. Each impedance of pin #12 and 14 is over 50 [KΩ] .

1

BR-B

is 100% )

◆

◆ Rear view of LCM

Status

PCB

1

14

…

1

14

…

<Master>

Ver. 0.0 9 / 38

LD420EUB

Product Specification

3-3. Signal Timing Specifications

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

ITEM Symbol Min Typ Max Unit Note

Horizontal

Vertical

Frequency

Display

Period

Blank tHB 100 140 240 tclk

Total tHP 1060 1100 1200 tclk 2200/2

Display

Period

Blank tVB 11 45 69 tHP

Total tVP 1091 1125 1149 tHP

DCLK fCLK 70 74.25 77 MHz 148.5/2

Horizontal fH 65 67.5 70 KHz

Vertical fV 57 60 63 Hz

tHV - 960 - tclk

tVV - 1080 - tHP

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

ITEM Symbol Min Typ Max Unit Note

Horizontal

Display

Period

Blank tHB 100 140 240 tclk

Total tHP 1060 1100 1200 tclk 2200/2

tHV - 960 - tclk

Vertical

Frequency

Display

Period

Blank tVB 228 270 300 tHP

Total tVP 1308 1350 1380 tHP

DCLK fCLK 70 74.25 77 MHz 148.5/2

Horizontal fH 65 67.5 70 KHz

Vertical fV 47 50 53 Hz

tVV - 1080 - tHP

Note:

1. The input of HSYNC & VSYNC signal does not have an effect on normal operation (DE Only Mode).
If you use spread spectrum of 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

※ Timing should be set based on clock frequency.

Ver. 0.0 10 / 38

3-4. LVDS Signal Specification

3-4-1. LVDS Input Signal Timing Diagram

LD420EUB

Product Specification

DCLK

First data

Second data

Third data

Forth data

DE(Data Enable)

tCLK

0.5 VDD

Invalid data

Invalid data

Invalid data

Invalid data

DE, Data

Valid data

Pixel 0

Valid data

Pixel 1

Valid data

Pixel 2

Valid data

Pixel 3

Pixel 4

Pixel 5

Pixel 6

Pixel 7

0.7VDD

0.3VDD

Invalid data

Invalid data

Invalid data

Invalid data

* tHB = tHFP + tWH +tHBP

* tVB = tVFP + tWV +tVBP

1 1080

DE(Data Enable)

tVV

tVP

Ver. 0.0 11 / 38

3-4-2. LVDS Input Signal Characteristics

1) DC Specification

LVDS -

LVDS +

LD420EUB

Product Specification

# VCM= {(LVDS +) + ( LVDS -)} /2

0V

V

CM

V

IN _ MAXVIN _ MIN

Description Symbol Min Max Unit Note
LVDS Common mode Voltage V
LVDS Input Voltage Range V

CM

IN

1.0 1.5 V -

0.7 1.8 V -

Change in common mode Voltage ΔVCM - 250 mV -

2) AC Specification

T

clk

LVDS Clock

A

LVDS Data

(F

= 1/T

)

clk

A

t

RF

LVDS 1‟st Clock

LVDS 2nd/ 3rd/ 4thClock

tSKEW

t

SKEW_mintSKEW_max

tSKEW

clk

T

clk

80%

20%

Description Symbol Min Max Unit Note

LVDS Differential Voltage

High Threshold

Low Threshold

LVDS Clock to Data Skew t
LVDS Clock/DATA Rising/Falling time t
Effective time of LVDS t
LVDS Clock to Clock Skew (Even to Odd) t

1. All Input levels of LVDS signals are based on the EIA 644 Standard.

Note

2. If t

isn‟t enough, t

RF

should be meet the range.

eff

3. LVDS Differential Voltage is defined within t

V

TH

V

TL

SKEW

RF

eff

SKEW_EO

eff

Ver. 0.0 12 / 38

100 600 mV

-600 -100 mV

- |(0.25*T

260 |(0.3*T

|±360|

- |1/7* T

)/7| ps -

clk

)/7| ps 2

clk

- ps ­| ps -

clk

3

Product Specification

LD420EUB

LVDS Data

0V

(Differential)

LVDS CLK

0.5tui

360ps

tui

VTH

VTL

360ps

teff

tui : Unit Interval

0V

(Differential)

* This accumulated waveform is tested with differential probe

Ver. 0.0 13 / 38

LD420EUB

Product Specification

3-5. Color Data Reference

The brightness of each primary color (red, green, blue) is based on the 10bit gray scale data input for the color.
The higher binary input, the brighter the color. Table 7 provides a reference for color versus data input.

Table 7. COLOR DATA REFERENCE

Input Color Data

Basic
Color

RED

Color

Black
Red (1023)
Green (1023)
Blue (1023)
Cyan

Magenta
Yellow

White
RED (0000)

RED (0001)

…

RED (1022)
RED (1023)
GREEN (0000)

RED

MSB LSB

R9 R8 R7 R6 R5 R4 R3 R2 R1 R0 G9 G8 G7 G6 G5 G4 G3 G2 G1 G0 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0

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

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

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

GREEN

BLUE

MSB LSB

GREEN

BLUE

GREEN (0001)

...
GREEN (1022)
GREEN (1023)
BLUE (0000)
BLUE (0001)

…

BLUE (1022)
BLUE (1023)

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

0 0 0 0 0 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

... ... ...

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 1 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 1 1

Ver. 0.0 14 / 38

3-6. Power Sequence

3-6-1. LCD Driving circuit

LD420EUB

Product Specification

Power Supply For LCD

V

LCD

Interface Signal (Tx)

User Control Signal

(LVDS_select, BIT_select)

Power for Lamp

Table 8. POWER SEQUENCE

Parameter

90%

10%

0V

T1

T2

30%

0V

100%

T6

T7

Value

Min Typ Max

Valid Data

T3 T4

LED Driver

90%

10%

T8

10%

T5

Vcm : LVDS Common mode Voltage

Unit Notes

T1 0.5 - 20 ms

T2 0 - - ms 4

T3 200 - - ms 3

T4 200 - - ms 3

T5 1.0 - - s 5

T6 - - T2 ms 4

T7 0.5 - - s

T8 100 - - ms 6

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

Note :

2. When the power supply for LCD (VLCD) is off, be sure to pull down the valid and invalid data 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 user control signals) precedes the on time of Power(V
it will be happened abnormal display. When T6 is NC status, T6 doesn‟t need to be measured.

5. T5 should be measured after the Module has been fully discharged between power off and on
period.

6. It is recommendation specification that T8 has to be 100ms as a minimum value.

Ver. 0.0 15 / 38

LCD

),

3-6-2. Sequence for LED Driver

Power Supply For LED Driver

VBL

0V

10%

Product Specification

24V (typ.)

90%

LD420EUB

90%

VON/OFF

ExtVBR-B

3-6-3. Dip condition for LED Driver

VBL(Typ.) x 0.8

T1 T2

T4 T6

LED ON

T5

T3

V

BL

0 V

: 24V

Table 9. Power Sequence for LED Driver

Parameter

T1 20 - - ms 1
T2 500 - - ms
T3 10 - - ms
T4 0 - - ms
T5 - - 10 ms VBL(Typ) x 0.8
T6 500 - - ms 2

Min Typ Max

Values

Units Remarks

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

Even though T1 is over the specified value, there is no problem if I2T spec of fuse is satisfied.

2. In T6 section, ExtVBR-B should be sustained from 5% to 100% .

Ver. 0.0 16 / 38

LD420EUB

Product Specification

4. Optical Specification

Optical characteristics are determined after the unit has been „ON‟ and stable in a dark environment at 25±2°C.
The values are specified at distance 50cm from the LCD surface at a viewing angle of  and  equal to 0 °.
FIG. 1 shows additional information concerning the measurement equipment and method.

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
Surface Luminance, white L
Luminance Variation 

Response Time

Color Coordinates
[CIE1931]

Color Temperature 10,000 K
Color Gamut 72 %
Viewing Angle (CR>10)

x axis, right(=0°)
x axis, left (=180°)
y axis, up (=90°)
y axis, down (=270°)

Gray Scale - - - 6

Gray-to-Gray G to G - 12 15 ms 4,5

RED

GREEN

BLUE

WHITE

WH

WHITE

5P - - 1.3 3

Rx
Ry 0.334
Gx 0.304
Gy 0.612
Bx 0.153

By 0.055
Wx 0.279
Wy 0.292

r 89 - -

l 89 - -
u 89 - -
d 89 - -

Min Typ Max

1000 1,300

360 450

Typ

-0.03

=12.0V, fV=120Hz, Dclk=74.25MHz,

LCD

EXTVBR-B =100%

Value

- 1

- cd/m

0.647

Typ

+0.03

Unit Note

degree 5

2

2

Ver. 0.0 17 / 38

Product Specification

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

LD420EUB

Contrast Ratio =

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

It is measured at center 1-point.

2. Surface luminance is determined after the unit has been „ON‟ and 1 Hour 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 ,  WHITE is defined as :

 WHITE(5P) = Maximum(L

Where L

on1

to L

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

on5

on1,Lon2

, L

on3

, L

on4

, L

) / Minimum(L

on5

on1,Lon2

, L

on3

, L

on4

, L

on5

)

For more information, see the FIG. 2.

4. Response time is the time required for the display to transit 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)

※ G to G Spec stands for average value of all measured points.

Photo Detector : RD-80S / Field : 2˚

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. 5.

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 0.063

L63 0.27
L127 1.04
L191 2.49
L255 4.68
L319 7.66
L383 11.5
L447 16.1
L511 21.6
L575 28.1
L639 35.4
L703 43.7
L767 53.0
L831 63.2
L895 74.5
L959 86.7

L1023 100

Ver. 0.0 18 / 38

Product Specification

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

H

A

③②

LD420EUB

V

①

B

A : H / 4 mm

④

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

⑤

TrD

B : V / 4 mm
@ H,V : Active Area

Optical
Response

10

0

Ver. 0.0 19 / 38

Gray(N)

N,M = Black~White, N<M

FIG. 3 Response Time

Gray(M)

Gray(N)

Dimension of viewing angle range

Normal

Y

E







= 0, Right



= 180, Left



= 270, Down



= 90, Up

LD420EUB

Product Specification

FIG. 5 Viewing Angle

Ver. 0.0 20 / 38

Product Specification

5. Mechanical Characteristics

Table 12 provides general mechanical characteristics.

Table 12. MECHANICAL CHARACTERISTICS

Item Value

LD420EUB

Horizontal

Outline Dimension

Bezel Area

Active Display Area

Weight 9.2 Kg (Typ.), 9.7 kg (Max.)

Vertical
Depth
Horizontal
Vertical
Horizontal
Vertical

958.4 mm

551.3 mm

10.8mm(B)/24.0 mm(D)

938.6 mm

531.5 mm

930.24 mm

523.26 mm

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

Ver. 0.0 21 / 38

[ FRONT VIEW ]

LD420EUB

Product Specification

Ver. 1.0 22 / 3822 / 38

[ REAR VIEW ]

LD420EUB

Product Specification

Ver. 1.0 23 / 3823 / 38

Product Specification

6. Reliability

Table 13. ENVIRONMENT TEST CONDITION

No. Test Item Condition

LD420EUB

1 High temperature storage test

2 Low temperature storage test

3 High temperature operation test

4 Low temperature operation test

Vibration test

5

(non-operating)

Shock test

6

(non-operating)

7 Humidity condition Operation

Altitude operating

8

storage / shipment

Ta= 60°C 240h

Ta= -20°C 240h

Ta= 50°C 50%RH 240h

Ta= 0°C 240h

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

Each direction per 10 min

Shock level : 30 Grms
Waveform : half sine wave, 11ms
Direction : ±X, ±Y, ±Z

One time each direction

Ta= 40 °C ,90%RH
0 - 15,000 ft

0 - 40,000 ft

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

Ver. 0.0 24 / 38

Product Specification

7. International Standards

7-1. Safety

a) UL 60950-1, Underwriters Laboratories Inc.

Information Technology Equipment - Safety - Part 1 : General Requirements.

b) CAN/CSA C22.2 No.60950-1-07, Canadian Standards Association.

Information Technology Equipment - Safety - Part 1 : General Requirements.

c) EN 60950-1, European Committee for Electrotechnical Standardization (CENELEC).

Information Technology Equipment - Safety - Part 1 : General Requirements.

d) IEC 60950-1, The International Electrotechnical Commission (IEC).

Information Technology Equipment - Safety - Part 1 : General Requirements.

(Including report of IEC60825-1:2001 clause 8 and clause 9)

Notes

1. Laser (LED Backlight) Information
Class 1M LED Product

IEC60825-1 : 2001

Embedded LED Power (Class1M)

LD420EUB

2. Caution
: LED inside.

Class 1M laser (LEDs) radiation when open.
Do not open while operating.

7-2. EMC

a) ANSI C63.4 “American National Standard for Methods of Measurement of Radio-Noise

Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz.”
American National Standards Institute (ANSI), 2003.

b) CISPR 22 “Information technology equipment – Radio disturbance characteristics – Limit and

methods of measurement." International Special Committee on Radio Interference
(CISPR), 2005.

c) CISPR 13 “Sound and television broadcast receivers and associated equipment – Radio disturbance

characteristics – Limits and method of measurement." International Special Committee on Radio
Interference (CISPR), 2006.

7-3. Environment

a) RoHS, Directive 2002/95/EC of the European Parliament and of the council of 27 January 2003

Ver. 0.0 25 / 38

8. Packing

8-1. Information of LCM Label

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 ~ M : SERIAL NO.

Note

1. YEAR

Year

Product Specification

201320122011

2014E2015

2016G2017H2018J2019

LD420EUB

2020

Mark

CBA

D

F

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 Pallet : 17 pcs
b) Pallet Size : 1140 mm(W) X 990 mm(D) X 785 mm(H)

K

Oct

A

Nov

B

DecMarFebJan

C321

Ver. 0.0 26 / 38

LD420EUB

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 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
t h e

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) Response time depends on the temperature.(In lower temperature, it becomes longer.)
(2) 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

(3) 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.
(4) When fixed patterns are displayed for a long time, remnant image is likely to occur.
(5) 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.

(6) Please do not give any mechanical and/or acoustical impact to LCM. Otherwise, LCM can‟t be operated

its full characteristics perfectly.

(7) 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)
(8) Please do not set LCD on its edge.
(9) The conductive material and signal cables are kept away from LED driver inductor to prevent abnormal

display, sound noise and temperature rising.

Ver. 0.0 27 / 38

LD420EUB

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.
(3) Storage condition is guaranteed under packing conditions.
(4) The phase transition of Liquid Crystal in the condition of the low or high storage temperature will be

recovered when the LCD module returns to the normal condition

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 ion-

blown 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 normal-

hexane.

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.

Ver. 0.0 28 / 38

LD420EUB

Product Specification

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.

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

5. Module should be turned counterclockwise or clockwise based on front view when used in portrait mode

Ver. 0.0 29 / 38

# APPENDIX-I

■ Pallet Ass‟y

LD420EUB

Product Specification

NO. DESCRIPTION MATERIAL

1 LCD Module 42INCH

2 BAG AL BAG

3 TAPE MASKING 20MMX50M

4 PALLET Plastic 1140X990X120mm

5 PACKING,BOTTOM EPS

6 PACKING,TOP EPS

7 ANGLE,PACKING PAPER

8 BAND PP

9 ANGLE.COVER PAPER

10 BAND,CLIP STEEL or PP

11 LABEL YUPO 80G 100X70

Ver. 0.0 30 / 38

# APPENDIX- II-1

■ LCM Label

LD420EUB

Product Specification

Model

UL, TUV Mark

LGD Logo

LD420EUB
(SD)(A1)

Serial No.

Origin

Ver. 0.0 31 / 38

# APPENDIX- II-2

■ Pallet Label

LD420EUB

Product Specification

LD420EUB

SDA1

17 PCS

MADE IN KOREA

001/01-01

XXXXXXXXXXXXX XXX

RoHS Verified

Ver. 0.0 32 / 38

Product Specification

# APPENDIX- III-1

■ Required signal assignment for Flat Link (Thine : THC63LVD103) Transmitter(Pin7= “L” or “NC”)

LD420EUB

Host System

30 Bit

RED0
RED1
RED2
RED3
RED4
RED5
RED6
RED7
RED8

RED9
GREEN0
GREEN1
GREEN2
GREEN3
GREEN4
GREEN5
GREEN6
GREEN7
GREEN8
GREEN9

BLUE0
BLUE1
BLUE2
BLUE3
BLUE4
BLUE5
BLUE6
BLUE7
BLUE8
BLUE9

Hsync

Vsync

Data Enable

CLOCK

THC63LVD103

or Compatible

33
34
35
36
37
38
59
61
4
5
40
41
42
44
45
46
62
63
6
8
48
49
50
52
53
54
64
1
9
11
55
57
58
12

TA-

TA+

TB-

TB+

TC-

TC+

TCLK-

TCLK+

TD-

TD+

TE-

TE+

31
30

29
28

25
24

23
22

21
20

19
18

GND

FI-RE51S-HF

12
13

14
15

16
17

19
20

22
23

24
25

7

100Ω

100Ω

100Ω

100Ω

100Ω

100Ω

LCM Module

Timing

Controller

RO0N
RO0P

RO1N
RO1P

RO2N
RO2P

ROCLKN
ROCLKP

RO3N
RO3P

RO4N
RO4P

VESA/ JEIDA

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

input.

2. Refer to LVDS Transmitter Data Sheet for detail descriptions. (THC63LVD103 or Compatible)

3. „9‟ means MSB and „0‟ means LSB at R,G,B pixel data.

Ver. 0.0 33 / 38

Product Specification

# APPENDIX- III-2

■ Required signal assignment for Flat Link (Thine : THC63LVD103) Transmitter(Pin7= “H” )

LD420EUB

Host System

30 Bit

RED0

RED1

RED2

RED3

RED4

RED5

RED6

RED7

RED8

RED9
GREEN0
GREEN1
GREEN2
GREEN3
GREEN4
GREEN5
GREEN6
GREEN7
GREEN8
GREEN9

BLUE0
BLUE1
BLUE2
BLUE3
BLUE4
BLUE5
BLUE6
BLUE7
BLUE8
BLUE9

Hsync

Vsync

Data Enable

CLOCK

THC63LVD103

or Compatible

4
5
59
61
33
34
35
36
37
38
6
8
62
63
40
41
42
44
45
46
9
11
64
1
48
49
50
52
53
54
55
57
58
12

TA-

TA+

TB-

TB+

TC-

TC+

TCLK-

TCLK+

TD-

TD+

TE-

TE+

31
30

29
28

25
24

23
22

21
20

19
18

VCC

FI-RE51S-HF

12
13

14
15

16
17

19
20

22
23

24
25

7

100Ω

100Ω

100Ω

100Ω

100Ω

100Ω

LCM Module

Timing

Controller

RO0N
RO0P

RO1N
RO1P

RO2N
RO2P

ROCLKN
ROCLKP

RO3N
RO3P

RO4N
RO4P

VESA /JEIDA

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

input.

2. Refer to LVDS Transmitter Data Sheet for detail descriptions. (THC63LVD103 or Compatible)

3. „9‟ means MSB and „0‟ means LSB at R,G,B pixel data.

Ver. 0.0 34 / 38

Product Specification

# APPENDIX- IV-1

■ LVDS Data-Mapping Information (10 Bit )

1) LVDS Select : “H” Data-Mapping (JEIDA format)

RCLKP

RCLKM

LD420EUB

RAP

RBP

RCP

RDP

REP

R19 R18 R17 R16G14 R15R14’ R14R15’ G14”

B14 G19 G18 G17B15 G16G15’ G15G16’ B15”

V

SYNCHSYNC

B19 B18DE B17B16’ B16B17’ DE”

B13 B12 G13 G12X R13R12’ R12R13’ X”

B11 B10 G11 G10X R11R10’ R10R11’ X”

2) LVDS Select : “L” Data-Mapping (VESA format)

RCLKP

RCLKM

RAP

RBP

R15 R14 R13 R12G10 R11R10’ R10R11’ G10”

B10 G15 G14 G13B11 G12G11’ G11G12’ B15”

RCP

RDP

REP

Ver. 0.0 35 / 38

V

SYNCHSYNC

B17 B16 G17 G16X R17R16’ R16R17’ X”

B19 B18 G19 G18X R19R18’ R18R19’ X”

B15 B14DE B13B12’ B12B13’ DE”

Product Specification

# APPENDIX- IV-2

■ LVDS Data-Mapping Information (8 Bit )

1) LVDS Select : “H” Data-Mapping (JEIDA format)

RCLKP

RCLKM

LD420EUB

RAP

RBP

RCP

RDP

R17 R16 R15 R14G12 R13R12’ R12R13’ G12”

B12 G17 G16 G15B13 G14G13’ G13G14’ B13”

V

SYNCHSYNC

B17 B16DE B15B14’ B14B15’ DE”

B11 B10 G11 G10X R11R10’ R10R11’ X”

2) LVDS Select : “L” Data-Mapping (VESA format)

RCLKP

RCLKM

RAP

RBP

R15 R14 R13 R12G10 R11R10’ R10R11’ G10”

B10 G15 G14 G13B11 G12G11’ G11G12’ B15”

RCP

RDP

Ver. 0.0 36 / 38

V

SYNCHSYNC

B17 B16 G17 G16X R17R16’ R16R17’ X”

B15 B14DE B13B12’ B12B13’ DE”

# APPENDIX- V-1

■ Option Pin Circuit Block Diagram

1) Circuit Block Diagram of LVDS Selection pin

LVDS Select Pin : Pin 7

LVDS Select

(Pin 7)

LD420EUB

Product Specification

1KΩ

LVDS Select

50kΩ

ASIC

(TCON)

System Side LCM Side

Ver. 0.0 37 / 38

# APPENDIX- V-2

■ Option Pin Circuit Block Diagram

2) Circuit Block Diagram of Bit Selection pin

Bit Select Pin : Pin 27

Bit Select

(Pin 27)

LD420EUB

Product Specification

VCC

50kΩ

1KΩ

Bit Select

ASIC

(TCON)

System Side LCM Side

Ver. 0.0 38 / 38