LG Display LD420EUP-SEB2 Specification

LD420EUP

SUFFIX

SEB2

Product Specification

SPECIFICATION

FOR

APPROVAL

)

(

(

Preliminary Specification

)

Final Specification

●

Title 42.0” WUXGA TFT LCD

BUYER General

MODEL

APPROVED BY

/

/

/

SIGNATURE

DATE

SUPPLIER LG DISPLAY Co., Ltd.

*MODEL LD420EUP

APPROVED BY

O. H. Lee

/ Team Leader

REVIEWED BY

J.K. Kim

/ Project Leader

PREPARED BY

K. B. Park

/ Engineer

SIGNATURE

DATE

Please return 1 copy for your confirmation with

your signature and comments.

Ver. 1.0 1 / 40

PD Product Design Dept.

LG Display Co., Ltd

Product Specification

CONTENTS

LD420EUP

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. 1.0 2 / 40

Product Specification

RECORD OF REVISIONS

Revision No. Revision Date Page Description

0.0 Oct. 06, 2012 - Preliminary specification (First Draft)

1.0 Jan.17.2013 - Final Specification

LD420EUP

Ver. 1.0 3 / 40

LD420EUP

Bit

Product Specification

1. General Description

1. General Description

1. General Description1. General Description

The LD420EUP is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED)
ba c k l ig h t s y s t e m . T h e ma t r i x em pl o ys a - Si T h i n Fi l m T r an s i s to r a s th e a ct iv e e lem en t .
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 4-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.

EPI (RGB)

Control
Signals

Power Signals

Source Driver Circuit

S1 S1920

G1

TFT - LCD Panel

(1920 × RGB × 1080 pixels)

G1080

LVDS

2Port

LVDS

2Port

LVDS
Select

L-DIM
Enable

Select

+12.0V

CN2

(41pin)

CN1

(51pin)

LVDS 3,4

LVDS 1,2

Option
signal

I2C

EEPROM

SCL

SDA

Timing Controller

LVDS Rx + L/D + DGA + ODC

Integrated

Power Circuit

Block

1B

SIN, SCLK, V_Sync

+24.0V, GND, On/Off

ExtVBR-B

LED Driver

6B

L-Dimming : 12 Block

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 91.5W(Typ.) [Logic= 8.3W, 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.)

7B

12B

Ver. 1.0 4 / 40

LD420EUP

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. 1.0 5 / 40

50

40

40%

Humidity [(%)RH]

10%

Storage

Operation

LD420EUP

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

=12.0V,

Ta=25

±

2°C

, fV=120Hz condition,

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

- 690 900 mA 1

Power Input Current ILCD

- 975 1,265 mA 2

Power Consumption PLCD 8.3 10.8 Watt 1

Rush current IRUSH - - 3.0 A 3

Value

Unit Note

Note

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

LCD

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. 1.0 6 / 40

Product Specification

Life Time

50,000

60,000

Hrs

2

Table 3. ELECTRICAL CHARACTERISTICS (Continue)

LD420EUP

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 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

Input Voltage for

Control System

Signals

On/Off

Brightness Adjust Ext V

PWM Frequency for
NTSC & PAL

Pulse Duty Level
(PWM)

Min Typ Max

-

1 - 100 %

Values

3.46 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. Ext_PWM Signal have to input available duty range.
Between 99% and 100% ExtVBR-B duty have to be avoided. ( 99% < ExtVBR-B < 100%)
But ExtVBR-B 0% and 100% are available.

High

Available duty range

Low

0%

1%

Ver. 1.0 7 / 40

99% 100%Ext_PWM Input Duty

LD420EUP

Ground

Ground

Product Specification

3-2. Interface Connections

This LCD module employs two kinds of interface connection, 51-pin connector and 41-pin connector are 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 NC

2

3

4

5

6

7

8

9

10

11 GND

12 R1AN

13 R1AP

14 R1BN

15

16 R1CN

17 R1CP

18 GND

19 R1CLKN

20

21 GND

22 R1DN

23 R1DP

24 R1EN

25 R1EP

26

NC

NC

NC

NC

NC

LVDS Select

NC

NC

L-DIM Enable ‘H’ Only, Note 5

R1BP

R1CLKP

NC or GND

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4

‘H’ =JEIDA , ‘L’ or NC = VESA

Note 4

Note 4

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+)

NC or Ground

27

Bit Select

28

29

30

31

32

33

34

35

36

37

38

39

40 R2EN

41 R2EP

42

43

44

45

46

47

48

49

50

51

- - -

R2AN

R2AP

R2BN

R2BP

R2CN

R2CP

GND

R2CLKN

R2CLKP

GND

R2DN

R2DP

NC or GND

NC or GND

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

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. These pins are reserved only for LGD (Do not connect)

5. All evaluation was verified based on L-DIM “H” and should keep “H” status during the operation.

‘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(+)

SECOND LVDS Receiver Signal (D-)

SECOND LVDS Receiver Signal (D+)

SECOND LVDS Receiver Signal (E-)

SECOND LVDS Receiver Signal (E+)

No Connection or Ground

No Connection or Ground

Ver. 1.0 8 / 40

Product Specification

RC3N

THIRD LVDS Receiver Signal (C

-

)

GND

14

RC3N

THIRD LVDS Receiver Signal (C

-

)

35

GND

-LCD Connector (CN2) : FI-RE41S-HF (manufactured by JAE) or compatible

- Mating Connector : FI-RE41HL

Table 4-2. MODULE CONNECTOR(CN2) PIN CONFIGURATION

No Symbol Description No Symbol Description

1

2

3

4 NC

5

6

7

8

9

10

11

12

13 RB3P

15

16

17

18 RCLK3P

19

20

21

NC

NC

NC

NC

NC

NC

NC

GND

RA3N

RA3P

RB3N

RC3P

GND

RCLK3N

GND

RD3N

RD3P

No connection 22

No connection 23

No connection 24 GND Ground

No connection

No connection

No connection 27

No connection 28

No connection 29 RB4P

Ground

THIRD LVDS Receiver Signal (A-)

THIRD LVDS Receiver Signal (A+)

THIRD LVDS Receiver Signal (B-)

THIRD LVDS Receiver Signal (B+)

THIRD LVDS Receiver Signal (C+)

Ground

THIRD LVDS Receiver Clock Signal(-)

THIRD LVDS Receiver Clock Signal(+)

Ground

THIRD LVDS Receiver Signal (D-)

THIRD LVDS Receiver Signal (D+)

25 GND Ground

26

30

31

32

33

34 RCLK4P

36

37

38

39

40 GND Ground

41 GND Ground

-

Note :

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

2. LVDS pin (pin No. #22,23,38,39) are used for 10Bit(D) of the LCD module.
If used for 8Bit(R), these pins are no connection.

RE3N

RE3P

RA4N

RA4P

RB4N

RC4N

RC4P

GND

RCLK4N

RD4N

RD4P

RE4N

RE4P

THIRD LVDS Receiver Signal (E-)

THIRD LVDS Receiver Signal (E+)

FORTH LVDS Receiver Signal (A-)

FORTH LVDS Receiver Signal (A+)

FORTH LVDS Receiver Signal (B-)

FORTH LVDS Receiver Signal (B+)

FORTH LVDS Receiver Signal (C-)

FORTH LVDS Receiver Signal (C+)

Ground

FORTH LVDS Receiver Clock Signal(-)

FORTH LVDS Receiver Clock Signal(+)

Ground

FORTH LVDS Receiver Signal (D-)

FORTH LVDS Receiver Signal (D+)

FORTH LVDS Receiver Signal (E-)

FORTH LVDS Receiver Signal (E+)

LD420EUP

Ver. 1.0 9 / 40

CN3

#1 #10

CN3

#1 #10

CN1 CN2

#1

CN1 CN2

#1 #51

#51 #1 #41

#1 #41

Rear view of LCM

Product Specification

3-2-2. Backlight Module

Master

-LED Driver Connector
: 20022WR - H14B2(Yeonho)

Mating Connector

: 20022HS - 14B2(Yeonho)

Table 5. LED DRIVER CONNECTOR PIN CONFIGURATION

Pin No Symbol Description Note

LD420EUP

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. 1.0 10 / 40

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. TIMING TABLE (DE Only Mode)

ITEM Symbol Min Typ Max Unit Note

LD420EUP

Horizontal

Vertical

Frequency

Display

Period

Blank tHB 40 70 200 tCLK 1

Total tHP 520 550 680 tCLK

Display

Period

Blank tVB

Total tVP

ITEM Symbol Min Typ Max Unit Note

DCLK fCLK 66.97 74.25 78.00 MHz

Horizontal fH 121.8 135 140 KHz 2

Vertical fV

tHV 480 480 480 tCLK 1920 / 4

tVV 1080 1080 1080 Lines

20

(228)

1100

(1308)

108

(95)

45

(270)

1125

(1350)

120

(100)

86

(300)

1166

(1380)

122

(104)

Lines 1

Lines

Hz

NTSC
(PAL)

2

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. 1.0 11 / 40

3-4. LVDS Signal Specification

Invalid data

3-4-1. LVDS Input Signal Timing Diagram

LD420EUP

Product Specification

DCLK

First data

Second data

Third data

Forth data

DE(Data Enable)

tCLK

0.5 VDD

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. 1.0 12 / 40

3-4-2. LVDS Input Signal Characteristics

A

1) DC Specification

LVDS -

LVDS +

LD420EUP

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 ∆VCM - 250 mV -

2) AC Specification

T

clk

LVDS Clock

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 tRFisn’t enough, t

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. 1.0 13 / 40

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

tui : Unit Interval

LVDS CLK

LD420EUP

LVDS Data

0V

(Differential)

0.5tui

360ps

tui

VTH

VTL

360ps

teff

0V

(Differential)

* This accumulated waveform is tested with differential probe

Ver. 1.0 14 / 40

LD420EUP

Yellow

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

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

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 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 (0001)

GREEN

GREEN (1022)

GREEN (1023)

BLUE (0000)

BLUE (0001)

BLUE

BLUE (1022)

BLUE (1023)

Ver. 1.0 15 / 40

...

…

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

3-6. Power Sequence

3-6-1. LCD Driving circuit

LD420EUP

Product Specification

Power Supply For LCD

V

LCD

Interface Signal (Tx_clock)

User Control Signal

(LVDS_SEL, BIT_SEL, L-DIM EN)

Power for LED

Table 8. POWER SEQUENCE

Parameter

90%

10%

0V

T1

T2

30%

0V

100%

T6

T7

Value

Min Typ Max

Valid Data

T3 T4

LED ON

90%

10%

T8

T5

Vcm : LVDS Common mode Voltage

Unit notes

10%

T1 0.5 - 20 ms 1

T2 0 - - ms 2

T3 200 - - ms 3

T4 200 - - ms 3

T5 1.0 - - s 4

T6 - - T2 ms 5

T7 0.5 - - s 6

T8 100 - - ms 7

notes :

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

2. If T2 is satisfied with specification after removing LVDS Cable, there is no problem.

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

5. 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.

6. If there is no abnormal display, no problem.

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

※ Please avoid floating state of interface signal at invalid period.
※ When the power supply for LCD (VLCD) is off, be sure to pull down the valid and invalid data to 0V.

Ver. 1.0 16 / 40

LCD

),

3-6-2. Sequence for LED Driver

3-6-3. Dip condition for LED Driver

Power Supply For LED Driver

VBL

0V

10%

Product Specification

24V (typ.)

90%

LD420EUP

90%

VON/OFF

Ext-VBR-B

VBL(Typ.) x 0.8

T1 T2

T4

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

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.

Ver. 1.0 17 / 40

Values

Min Typ Max

Units Remarks

LD420EUP

Parameter

Symbol

Unit

Note

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 Φ and θ 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

Value

Min Typ Max

Contrast Ratio CR

Surface Luminance, white L

Luminance Variation δ
Response Time

Color Coordinates
[CIE1931]

Color Temperature 10,000 K

Color Gamut 72 %

Viewing Angle (CR>10)

x axis, right(φ=0°)
x axis, left (φ=180°)
y axis, up (φ=90°)
y axis, down (φ=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 0.301

Gy 0.606

Bx 0.154

By 0.054

Wx 0.279

Wy 0.292

θr 89 - -

θl 89 - -

θu 89 - -

θd 89 - -

1,100 1,300

360 450

Typ

-0.03

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

LCD

EXTVBR-B =100%

- 1

- cd/m

0.641

Typ

+0.03

degree 5

2

2

Ver. 1.0 18 / 40

Product Specification

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

LD420EUP

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 , δ WHITE is defined as :
δ 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. 1.0 19 / 40

Product Specification

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

H

A

③③③③②②②②

LD420EUP

V

①①①①

B

A : H / 4 mm

④④④④

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

⑤⑤⑤⑤

TrD

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

Optical
Response

10

0

Ver. 1.0 20 / 40

Gray(N)

N,M = Black~White, N<M

FIG. 3 Response Time

Gray(M)

Gray(N)

Dimension of viewing angle range

φ

= 180°, Left

Product Specification

Normal

E

θ

φ

Y

φ

= 90°, Up

φ

= 0°, Right

LD420EUP

φ

= 270°, Down

FIG. 5 Viewing Angle

Ver. 1.0 21 / 40

Product Specification

5. Mechanical Characteristics

5. Mechanical Characteristics

5. Mechanical Characteristics5. Mechanical Characteristics

Table 12 provides general mechanical characteristics.

Table 12. MECHANICAL CHARACTERISTICS

Item Value

LD420EUP

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.

Table 12-1. Case Top LG Logo Color Information

Color No. Maker

Black Spray Acron#2200 Semi-Glass LGD BLACK Kunsul Chemical Industry

Logo Shane Mirror No.3 (Lot No.)110412 SEIKO Advance

Ver. 1.0 22 / 40

[ FRONT VIEW ]

LD420EUP

Product Specification

Ver. 1.0 23 / 4023 / 40

[ REAR VIEW ]

LD420EUP

Product Specification

Ver. 1.0 24 / 4024 / 40

Product Specification

One time each direction

6. Reliability

Table 13. ENVIRONMENT TEST CONDITION

No. Test Item Condition

LD420EUP

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

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. 1.0 25 / 40

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)

LD420EUP

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. 1.0 26 / 40

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

LD420EUP

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. 1.0 27 / 40

LD420EUP

chemical damage to the polarizer

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

(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. 1.0 28 / 40

LD420EUP

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. 1.0 29 / 40

LD420EUP

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.(25 ± 2 ℃)
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. 1.0 30 / 40

# APPENDIX-I

■■■■ Pallet Ass’y

LD420EUP

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. 1.0 31 / 40

# APPENDIX- II-1

■ LCM Label

LD420EUP

Product Specification

Model

UL, TUV Mark

LGD Logo

LD420EUP
(SE)(B2)

Serial No.

Origin

Ver. 1.0 32 / 40

# APPENDIX- II-2

■ Pallet Label

LD420EUP

Product Specification

LD420EUP

SEB2

17 PCS

MADE IN KOREA

001/01-01

XXXXXXXXXXXXX XXX

RoHS Verified

Ver. 1.0 33 / 40

Product Specification

GREEN4

45

TCLK

-

ROCLKN

19

23

# APPENDIX- III-1

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

LD420EUP

Host System

30 Bit

RED0
RED1
RED2
RED3
RED4
RED5
RED6
RED7
RED8

RED9
GREEN0
GREEN1
GREEN2
GREEN3

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

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+

TD-

TD+

TE-

TE+

31

30

29

28

25

24

22

21

20

19

18

GND

FI-RE51S-HF

12

13

14

15

16

17

20

22

23

24

25

7

100Ω

100Ω

100Ω

100Ω

100Ω

100Ω

LCM Module

Timing

Controller

RO0N

RO0P

RO1N

RO1P

RO2N

RO2P

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. 1.0 34 / 40

Product Specification

GREEN4

40

TCLK

-

ROCLKN

19

23

# APPENDIX- III-2

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

LD420EUP

Host System

30 Bit

RED0

RED1

RED2

RED3

RED4

RED5

RED6

RED7

RED8

RED9
GREEN0
GREEN1
GREEN2
GREEN3

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

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+

TD-

TD+

TE-

TE+

31

30

29

28

25

24

22

21

20

19

18

VCC

FI-RE51S-HF

12

13

14

15

16

17

20

22

23

24

25

7

100Ω

100Ω

100Ω

100Ω

100Ω

100Ω

LCM Module

Timing

Controller

RO0N

RO0P

RO1N

RO1P

RO2N

RO2P

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. 1.0 35 / 40

Product Specification

# APPENDIX- IV-1

■ LVDS Data-Mapping Information (10 Bit )

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

RCLKP

RCLKM

LD420EUP

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. 1.0 36 / 40

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

LD420EUP

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. 1.0 37 / 40

V

SYNCHSYNC

B17 B16 G17 G16X R17R16’ R16R17’ X”

B15 B14DE B13B12’ B12B13’ DE”

# APPENDIX- V-1

System Side

LCM Side

■ Option Pin Circuit Block Diagram

1) Circuit Block Diagram of LVDS Selection pin

LVDS Select Pin : Pin 7

LVDS Select

(Pin 7)

LD420EUP

Product Specification

1KΩ

LVDS Select

50kΩ

ASIC

(TCON)

2) Circuit Block Diagram of L-DIM Enable Selection pin

L-DIM Enable Pin : Pin 10

R1

L-DIM _Enable

(Pin 10)

System Side

R1 ≤ 1KΩ

Ver. 1.0 38 / 40

1KΩ

LCM Side

50kΩ

L-DIM _Enable

ASIC

(TCON)

# APPENDIX- V-2

System Side

LCM Side

■ Option Pin Circuit Block Diagram

3) Circuit Block Diagram of Bit Selection pin

Bit Select Pin : Pin 27

Bit Select

(Pin 27)

LD420EUP

Product Specification

VCC

50kΩ

1KΩ

Bit Select

ASIC

(TCON)

Ver. 1.0 39 / 40

Product Specification

#151#1

41

#10 : L

-

DIM Enable

#151#1

41

# APPENDIX- VI

■ EXTVBR-B & Local Dimming Design Guide

1) When L-Dim Enable is “L", Vertical Sync Signal = System Dimming with 100Hz or 120Hz frequency.

2) Local Dimming signals are synchronized with V-Sync Freq. of System in T-Con Board.

3) EXTVBR-B Specification ( VCC = 3.3V ) @ Local Dimming

a) High Voltage Range : 2.5 V ~ 3.6 V

b) Low Voltage Range : 0.0 V ~ 0.8 V

(8pin)
#4 : Local Dim Serial Data
#5 : GND
#6 : Local Dimming Serial Clock
#8 : Vertical Sync signal

#1

#8

LCM T-con Board

T-Con

LD420EUP

EXTVBR-B

Frequency

#8

B/L Signal
Generation

Block

#1

LED

Driver

(51pin)

NC

#8 :

#9 : NC

#11 : GND

#14 : EXTVBR-B

14pin

100 Hz for PAL
120 Hz for NTSC

CNT1 51pin CNT2 41pin

CNT4 CNT4

Local Dimming On

System

Main IC

(PWM Generator)

Local Dimming Off

<With Driver Model>

VCC

VCC*0.9

3.3V

Chassis

Rising Time

Rising Time MAX 10.0 µs

Falling Time MAX 10.0 µs

VCC*0.1

0

Falling Time

Ver. 1.0 40 / 40