LG Electronics LC420DUG-JFR1 Specification

Engineering Specification

LCM ENGINEERING

SPECIFICATION

LC420DUG

The Below Models Reference this spec
LC420DUG-JFR1-7R1-B;

*MODEL LC420DUG

SUFFIX JFR1

Update Oct.15, 2012

() Preliminary Specification

(

) Final Specification

●

Ver. 1.1

1/27

LC420DUG

Number

ITEM

Page

Engineering Specification

CONTENTS

COVER 1

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 Panel Pixel Structure

3-5 POWER SEQUENCE

4 OPTICAL SPECIFICATIONS

5 MECHANICAL CHARACTERISTICS

6 RELIABILITY

7 INTERNATIONAL STANDARDS

7-1 SAFETY

2

3

4

5

6

6

9

12

13

14

15

21

22

23

23

7-2 ENVIRONMENT

8 PRECAUTIONS

8-1 MOUNTING PRECAUTIONS

8-2 OPERATING PRECAUTIONS

8-3 ELECTROSTATIC DISCHARGE CONTROL

8-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE

8-5 STORAGE

Ver. 1.1

23

24

24

24

25

25

25

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Engineering Specification

RECORD OF REVISIONS

Revision No. Revision Date Page Description

1.0 Sep. 27, 2012 - Final Specification (First Draft)

LC420DUG

1.1 Oct. 15, 2012 6

- Update: 3-1. Electrical Characteristics
Table 2. DC ELECTRICAL CHARACTERISTICS

Ver. 1.1

3/27

LC420DUG

)

high color depth and fast response time are important.

TFT

LCD P

l

(H)

(Typ.)

LED Cathode

()

() ()

(yp)

Engineering Specification

1. General Description

The LC420DUG 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 41.92inch 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 1.67M(ture) colors.
It is intended to support LCD TV, PCTV where high brightness, super wide viewing angle, high color gamut,

Power (VCC, VDD, HVDD, VGH, VGL)

Gate Control Signal

Gamma Reference Voltage

EPI (RGB & Control signal) for Left drive

Power (VCC, VDD, HVDD, VGH, VGL)

Gate Control Signal

Gamma Reference Voltage

EPI (RGB & Control Signal) for Right drive

LED Anode

LED Anode
LED Cathode

CN201 (7pin)

CN1

(50pin)

CN2

(50pin)

G1

G1080

S1 S1920

(1920 × RGB × 1080 pixels)

General Features

Active Screen Size 41.92 inches(1067.31mm) diagonal

Outline Dimension

Pixel Pitch 0.4833 mm x 0.4833 mm

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

Color Depth 8bit, 16.7 Million colors

Luminance, White 300 cd/m

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

955.8

X 554.4(V) X 35.0(B) mm

2

(Center 1point ,Typ.)

Source Driver Circuit

-

ane

[Gate In Panel]

Back light Assembly

Power Consumption Total 54.45W [Logic= 6.0W, LED Driver=48.45W (IF_

Weight 6.2 kg (TBD.)

Display Mode Transmissive mode, Normally black

Surface Treatment Hard coating(3H), Anti-reflection treatment of the front polarizer (Haze 1%)

Ver. 1.1

cathode=380mA))

4/27

LC420DUG

to

the

LCD

module

.

90%

20

Engineering Specification

2. Absolute Maximum Ratings

The following items are maximum values which, if exceeded, may cause faulty operation or permanent damage

Table 1. ABSOLUTE MAXIMUM RATINGS

Parameter Symbol

Logic&EPI Power Voltage VCC -0.5 +2.2 VDC

Gate High Voltage VGH +18.0 +30.0 VDC

Gate Low Voltage VGL -8.0 -4.0 VDC

Value

Unit Note

Min Max

Source D-IC Analog Voltage VDD -0.3 +18.0 V

Gamma Ref. Voltage (Upper) VGMH ½VDD-0.5 VDD+0.5 VDC

Gamma Ref. Voltage (Low) VGML -0.3 ½ VDD+0.5 VDC

V

F1 - +127

LED Input Voltage Forward Voltage

VF2 -+83

Panel Front Temperature T

SUR -+68

Operating Temperature TOP 0+50

Storage Temperature T

Operating Ambient Humidity H

Storage Humidity H

Note

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

ST -20 +60

OP 10 90 %RH

ST 10 90 %RH

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 40℃ condition.

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

of display area is less than or equal to 68 ℃ 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

degrade in case of improper thermal management in final product design.

5. The storage test condition:-20℃ temperature/90% humidity to 60℃ temperature/40% humidity ;
the operating test condition: 0℃ temperature/90% humidity to 50℃ temperature/60% humidity.

DC

VDC

°C

°C

°C

1

4

2,3

Ver. 1.1

Wet Bulb

Temperature [

0

°C]

10

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

30

40

50

60

60%

40%

10%

Humidity

[(%)RH]

Storage

Operation

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LC420DUG

O

LCD ci

L

ED

backlight ci

V

(GMA10

GMA18)

0.2-H_VDD

2V

V

DC

@

@

GIP Start Pulse Voltage

VST-VGL-VGH

V

Engineering Specification

3. Electrical Specifications

It requires two kind of power inputs.

ne is employed to power for the

rcuit. The other Is used for the

rcuit.

3-1. Electrical Characteristics

Table 2. DC ELECTRICAL CHARACTERISTICS

Parameter Symbol Condition MIN TYP MAX Unit Note

Logic & EPI Power Voltage VCC - 1.62 1.8 1.98 VDC

Logic High Level Input Voltage VIH -1.4-VCCVDC

Logic Low Level Input Voltage VIL -0-0.4VDC

Source D-IC Analog Voltage VDD - 15.6 15.8 16.0 VDC

Half Source D-IC Analog

Voltage

H_VDD - 7.7 7.9 8.1 V

DC 6

V

GMH

Gamma Reference Voltage

GML

Common Voltage Vcom Reverse 6.3 6.6 6.9 V

EPI input common voltage VCM LVDS Type 0.8 VCC/2 1.3 V

EPI Input eye diagram

EPI input differential voltage Vdiff - 150 - 500 mV

Gate High Voltage VGH

Gate Low Voltage VGL

GIP Bi-Scan Voltage

GIP Refresh Voltage

GIP Operating Clock GCLK - VGL - VGH V
Total Power Current

Total Power Consumption

Veye

VGI_P

VGI_N

VGH

even/odd

LCD - - 530 1050 mA 1

I

PLCD - - 6.4 8.3 Watt 1

(GMA1 ~ GMA9) H_VDD+0.2 - VDD-0.2 VDC

~

-90--mV

25℃

@ 0℃

-

- VGL - VGH VDC

- VGL - VGH V

27.7 28 28.3 V

29.7 30 30.3 V

-5.2 -5.0 -4.8 VDC

-0.

DC

DC

5

Note:

1. The specified current and power consumption are under the VLCD=12V., 25  2°C, fV=60Hz

2. The above spec is based on the basic model.

3. All of the typical gate voltage should be controlled within 1% voltage level

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

5. In case of EPI signal spec, refer to Fig 2 for the more detail.

6. HVDD Voltage level is half of VDD and it should be between Gamma9 and Gamma10.

Ver. 1.1

condition whereas mosaic pattern(8 x 6) is displayed and f

is the frame frequency.

V

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VGH

VGHM

GND

VGL

LC420DUG

Engineering Specification

Without GPM With GPM

FIG. 1 Gate Output Wave form without GPM and with GPM

EPI +

0 V

0 V

Vdiff

Vdiff

(Differential Probe)

FIG. 2-1 EPI Differential signal characteristics

EPI -

0 V

1 UI

0.5 UI

B1

(Differential Probe)

B2

FIG. 2-2 Eye Pattern of EPI Input

Vdiff

Vcm

(Active Probe)

Veye

Veye

Ver. 1.1

FIG. 3 Measure point

7/27

Engineering Specification

Val

Power Consumption

PBL-

70.376W

5

initial value at the typical LED current on condition of continuous operating at 25



2

C, based on duty 100%.

Table 3. ELECTRICAL CHARACTERISTICS (Continue)

LC420DUG

Parameter Sym bol

Backlight Assembly :

Forward Current
(one array)

Forward Voltage

Burst Dimming Duty On duty 1 100 %

Burst Dimming Frequency 1/T 95 182 Hz 7

LED Array : (APPENDIX-V)

Life Time 30,000 Hrs 6

Notes :

The design of the LED driver must have specifications for the LED array in LCD Assembly.

Anode I

Cathode I

F (anode)

F (cathode)

V

F1

V

F2

Min Typ Max

361 380 399 mAdc

102 111 120

68 74 80

ues

380 mAdc

Unit Note

Vdc 4

The electrical characteristics of LED driver are based on Constant Current driving type.
The performance of the LED in LCM, for example life time or brightness, is extremely influenced by the
characteristics of the LED Driver. So, all the parameters of an LED driver should be carefully designed.
When you design or order the LED driver, please make sure unwanted lighting caused by the mismatch of the
LED and the driver (no lighting, flicker, etc) has never been occurred. When you confirm it, the LCD–
Assembly should be operated in the same condition as installed in your instrument.

1. Electrical characteristics are based on LED Array specification.

2. Specified values are defined for a Backlight Assembly. (IBL :10 LED array/LCM)

3. Each LED array has 1 anode terminal and 1 cathode terminal.
The forward current (I

) of the anode terminal is 380mA and it supplies 380mA into one string, respectively

F

±5%

2, 3

1string(30 LED PKG)

Anode1

380mA

°°°

380mA

Cathode

6 Array (1 String)

1string(20 LED PKG)

Anode2

380mA

°°°

380mA

Cathode

4 Array (1 String)

4. The forward voltage (VF) of LED array depends on ambient temperature (Appendix-VI)

5. Maximum level of power consumption is measured at initial turn on.
Typical level of power consumption is measured after 1hrs aging at 25  2°C.

6. The life time (MTTF) is determined as the time at which brightness of the LED is 50% compared to that of

°

7. The reference method of burst dimming duty ratio.
It is recommended to use synchronous V-sync frequency to prevent waterfall
(Vsync * 2 =Burst Frequency)

Ver. 1.1

8/27

LC420DUG

This LCD module employs two kinds of interface connection, two 50

pin FFC connector are used for the

6

GCLK4

GIP GATE Clock 4

31

EPI1-EPI Receiver Signal(1

)

pply

)

pp y g

(p )

Engineering Specification

3-2. Interface Connections

-

module electronics.

3-2-1. LCD Module

-LCD Connector (CN1): TF06L-50S-0.5SH (Manufactured by HRS) or Compatible

Table 3-1. MODULE CONNECTOR(CN1) PIN CONFIGURATION

No Symbol Description No Symbol Description

1 LTD_OUT LTD OUTPUT 26 GND Ground

2 NC No Connection 27 EPI2- EPI Receiver Signal(2-)

3 GCLK1 GIP GATE Clock 1 28 EPI2+ EPI Receiver Signal(2+)

4 GCLK2 GIP GATE Clock 2 29 GND Ground

5 GCLK3 GIP GATE Clock 3 30 GND Ground

-

7 GCLK5 GIP GATE Clock 5 32 EPI1+ EPI Receiver Signal(1+)

8 GCLK6 GIP GATE Clock 6 33 GND Ground

9 VGI_N GIP Bi-Scan (Normal =VGL Rotate = VGH) 34 VCC Logic & EPI Power Voltage

10 VGI_P GIP Bi-Scan (Normal =VGH Rotate = VGL) 35 NC No Connection

11 VGH_ODD GIP Panel VDD for Odd GATE TFT 36 LOCKOUT3 LOCKOUT3

12 VGH_EVEN GIP Panel VDD for Even GATE TFT 37 NC No Connection

13 VGL GATE Low Voltage 38 GND Ground

14 VST VERTICAL START PULSE 39 GMA 18 GAMMA VOLTAGE 18 (Output From LCD)

15 GIP_Reset GIP Reset 40 GMA 16 GAMMA VOLTAGE 16

16 VCOM_L_FB VCOM Left Feed-Back Output 41 GMA 15 GAMMA VOLTAGE 15

17 VCOM_L VCOM Left Input 42 GMA 14 GAMMA VOLTAGE 14

18 GND Ground 43 GMA 12 GAMMA VOLTAGE 12

19 VDD Driver Power Su

20 VDD Driver Power Supply Voltage 45 GMA 9 GAMMA VOLTAGE 9 (Output From LCD)

21 H_VDD Half Driver Power Supply Voltage 46 GMA 7 GAMMA VOLTAGE 7

22 GND Ground 47 GMA 5 GAMMA VOLTAGE 5

23 EPI3- EPI Receiver Signal(3-) 48 GMA 4 GAMMA VOLTAGE 4

24 EPI3+ EPI Receiver Signal(3+) 49 GMA 3 GAMMA VOLTAGE 3

25 GND Ground 50 GMA 1 GAMMA VOLTAGE 1(Output From LCD)

Voltage 44 GMA 10 GAMMA VOLTAGE 10 (Output From LCD

Note :

1. Please refer to application note for details.

(GIP & Half VDD & Gamma Voltage setting)

Ver. 1.1

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