LG LM-240WU4-SLB3 Service manual

( ●●●● ) Preliminary Specification

SUFFIX

SLB3

( ) Final Specification

Liquid Crystal Display

LM240WU4

Product Specification

SPECIFICATION

FOR

APPROVAL

24.0” WUXGA TFT LCDTitle

BUYER

MODEL

APPROVED BY

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Please return 1 copy for your confirmation with

/

/

/

your signature and comments.

General

SIGNATURE

DATE

SUPPLIER LG Display Co., Ltd.

*MODEL LM240WU4

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

J.H Park / G.Manager

REVIEWED BY

J.Y LEE / Manager [C]

K.H MOON / Manager [M]

G.T KIM / Manager [P]

PREPARED BY

S.J Lee / Engineer

MNT Products Engineering Dept.

LG Display Co., Ltd.

SIGNATURE

DATE

Ver. 0.0 Aug. 5. 2010

1 / 33

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Liquid Crystal Display

3-5

15

3-5

15

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LM240WU4

Product Specification

Contents

No ITEM Page

COVER

CONTENTS

RECORD OF REVISIONS

GENERAL DESCRIPTION

1

ABSOLUTE MAXIMUM RATINGS

2

ELECTRICAL SPECIFICATIONS

3

ELECTRICAL CHARACTREISTICS

3-1

INTERFACE CONNECTIONS

3-2

SIGNAL TIMING SPECIFICATIONS

3-3

SIGNAL TIMING WAVEFORMS

3-4

COLOR INPUT DATA REFERNECE

POWER SEQUENCE

3-6

POWER SEQUENCE FOR INVERTER

3-7

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OPTICAL SFECIFICATIONS

4

MECHANICAL CHARACTERISTICS

5

RELIABLITY

6

7 INTERNATIONAL STANDARDS

7-1 SAFETY

7-2 EMC

7-3 ENVIRONMENT

8 PACKING

8-1 DESIGNATION OF LOT MARK

8-2 PACKING FORM

8-3 PALLET FORM 31

9 PRECAUTIONS 32

1

2

3

4

5

6

6

8

13

14

16

17

18

24

27

28

28

28

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Product Specification

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RECORD OF REVISIONS

Liquid Crystal Display

LM240WU4

Revision

No

0.0 Aug. 5. 2010 - First Draft(Preliminary)

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Revision Date Page Description

Ver. 0.0 Aug. 5. 2010

3 / 33

Liquid Crystal Display

Gate Driver Circuit

G1200

Gate Driver Circuit

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LM240WU4

Product Specification

1. General Description

LM240WU4 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive type display operating in the normally black mode. It has a 24inch diagonally measured
ac t i ve di s p lay ar e a with W U XGA re s olut i o n (120 0 v e rtica l b y 1920 ho r izont a l pixe l a r ray)
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes.
Gray scale or the brightness of the sub-pixel color is determined with a 10-bit gray scale signal for each dot,
thus, presenting a palette of more than 1.07B colors.
It has been designed to apply the 10Bit 2 port LVDS interface.
It is i nte n d e d t o s u p po r t d i s p l ay s wh e r e h i g h b r i g h t n e ss , s u p e r w i d e v i e w in g a ngl e ,
high color saturation, and high color are important.

RGB

LVDS

2port

CN1

(51pin)

+12.0V

+12.0V

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+24.0V

CN2

GND

(14Pin)

Timing

Controller

Power Circuit

Block

Inverter

Block

2pin x 7CNs (High)

G1

Source Driver Circuit

S1 S1920

TFT - LCD Panel

(1920 × RGB × 1200 pixels)

Back light Assembly

(U-Shape 7CCFL)

General Features

Active Screen Size 24.1 inches(61.13cm) diagonal

Outline Dimension 546.4(H) x 352.0(V) x 40.3(D) mm (Typ.)

Pixel Pitch 0.270 mm x 0.270 mm

Pixel Format 1920 horiz. By 1200 vert. Pixels RGB stripes arrangement

Color Depth 8-bit + A-FRC, 1,073,741,824 colors

Luminance, White 400 cd/m

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

Power Consumption Total TBD Watt (Typ.) ( TBD Watt @VLCD, 72.0 Watt@V

Weight 2740 g (typ.)

Display Operating Mode Transmissive mode, normally black

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

2

( Center 1 points)

DDB

)

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Liquid Crystal Display

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LM240WU4

Product Specification

2. Absolute Maximum Ratings

The following are maximum values which, if exceeded, may cause faulty operation or damage to the unit.

Table 1. ABSOLUTE MAXIMUM RATINGS

Parameter Symbol

Power Input Voltage

Operating Temperature

Storage Temperature

Operating Ambient Humidity

Storage Humidity

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

Note : 2. Maximum Storage Humidity is up to 40℃, 70% RH only for 4 corner light leakage Mura.

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

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Wet Bulb
Temperature [C]

10

0

VLCD 8 14 Vdc at 25 ± 2°C

TOP 0 50

TST -20 60

HOP 10 90 %RH

HST 10 90 %RH

50

40

30

20

Values

Min Max

90%

60

60%

40%

10%

Units Notes

°C

°C

Storage

Operation

Humidity [(%)RH]

1, 2

10 20 30 40 50 60 70 800-20

Dry Bulb Temperature [C]

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LM240WU4

Product Specification

3. Electrical Specifications

3-1. Electrical Characteristics

It requires two power inputs. One is employed to power the LCD electronics and to drive the TFT array and
liquid crystal. The second input power for the CCFL, is typically generated by an inverter. The inverter is an
external unit to the LCDs.

Table 2-1. ELECTRICAL CHARACTERISTICS

Parameter Symbol

MODULE :

Power Supply Input Voltage VLCD 11.4 12.0 12.6 Vdc

Permissive Power Input Ripple VRF 400 mVp-p 1

Power Supply Input Current ILCD

Power Consumption

Rush current IRUSH - - 3.0 A 4

PLCD TYP - TBD TBD Watt 2

PLCD MAX - TBD TBD Watt 2

Min Typ Max

- TBD TBD mA 2

- TBD TBD mA 3

Values

Unit Notes

Note :

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1. Permissive power ripple should be measured under V

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time, we recommend the bandwidth configuration of oscilloscope is to be under 20Mhz.

2. The specified current and power consumption are under the V
whereas mosaic pattern(8 x 6) is displayed and fVis the frame frequency.

3. The current is specified at the maximum current pattern.

4. The duration of rush current is about 2ms and rising time of power Input is 1ms(min.).

White Pattern

< Permissive Power Input Ripple (V

Ver. 0.0 Aug. 5. 2010

=12.0V, 25 ± 2°C,fV=60Hz condition and At that

LCD

=12.0V, 25 ± 2°C,fV=60Hz condition

LCD

Black Pattern

=12.0V, 25 ± 2°C,fV=60Hz) >

LCD

6 / 33

Product Specification

Input Current

I

VBR= 3.3V

-

3.0

3.5A2

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Datasheet pdf - http://www.DataSheet4U.net/

Typical current pattern
(White : 255Gray, Black : 0Gray)

Liquid Crystal Display

LM240WU4

Maximum current pattern

Mosaic Pattern(8 x 6)

< Power consumption (V

Table 2-2. INVERTER ELECTRICAL CHARACTERISTICS

Parameter Symbol Condition

Inverter :

Input Voltage V

Input Power P

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B/L on/off control V

Brightness Adj V

PWM Frequency F

Pulse Duty Level

(PWM)

LAMP :

Life time

Notes :

1. The input voltage ripple is limited below 400mVp-p.

2. The specified current and power consumption are under the typical supply Input voltage, 24V.

3. LGD recommend that PWM Freq. Is synchronized with three times harmonic of Vsync signal of system

4. The life is determined as the time at which luminance of the lamp is 50% compared to that of initial
value at the typical lamp current on condition of continuous operating at 25 ± 2°C.

5. Electrical characteristics are determined after the unit has been ‘ON’ and stable for approximately
30min in a dark environment at 25 °C± 2°C.

6. In case of the difference in measured values due to the difference
of measuring device was found, correlated value will be used after discussions between both parties.

Ver. 0.0 Aug. 5. 2010

DDB

DDB

B

ON/OFF

BR

b

V

BR

VBR= 3.3V

Lamp ON = High

Lamp OFF =Low

Ext. PWM

High Level

Low Level

=12.0V, 25 ± 2°C,fV=60Hz) >

LCD

Min. Typ. Max.

21.6 24.0 26.4 V 1

-0.3 - 0.8 V

40,000 Hrs 4

White Pattern

Values

- 72.0 84.0 Watt 2

2.5 - 5.0 V

30 100 % On Duty

180 Hz 3

2.0 - 5.0 V

0 - 0.8 V

Unit Notes

7 / 33

.

Liquid Crystal Display

13

RO0P

39

RE3P

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Datasheet pdf - http://www.DataSheet4U.net/

LM240WU4

Product Specification

3-2. Interface Connections

3-2-1. LCD Module

- LCD Connector(CN1). : FI-RE51S-HF (Manufactured by JAE) or equivalent

- Mating Connector: FI-RE51HL (Manufactured by JAE) or equivalent

Table 3 MODULE CONNECTOR(CN1) PIN CONFIGURATION

No Symbol Description No Symbol Description

1

GND

2

3

4
5
6
7
8

9
10
11 GND
12 RO0N

14 RO1N
15
16 RO2N
17 RO2P
18 GND
19 ROCLKN
20
21 GND
22 RO3N
23 RO3P
24 RO4N
25 RO4P
26

NC

ODC ON

NC
NC
NC
NC

GND

NC NC

GND

RO1P

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ROCLKP

GND

Ground
Reserved

ODC ON/OFF Control

(H:ODC ON, L:ODC OFF, Not Fixed)

(I2C DATA Interface)
(I2C CLK Interface)
Reserved
Reserved
Ground

Ground
Ground

FIRST CHANNEL 0­FIRST CHANNEL 0+
FIRST CHANNEL 1­FIRST CHANNEL 1+
FIRST CHANNEL 2­FIRST CHANNEL 2+

Ground
FIRST CLOCK CHANNEL C­FIRST CLOCK CHANNEL C+

Ground
FIRST CHANNEL 3­FIRST CHANNEL 3+
FIRST CHANNEL 4­FIRST CHANNEL 4+

Ground

27
28 RE0N

29 RE0P

30 RE1N
31 RE1P
32 RE2N
33 RE2P
34
35 RECLKN
36 RECLKP
37 GND
38 RE3N

40 RE4N
41 RE4P
42
43
44
45
46
47
48
49
50
51

GND

GND

GND
GND

GND Ground
GND

NC NC

NC NC
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 and should also be connected to the LCD’s

metal frame.

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

3. Input Level of LVDS signal is based on the EIA 664 Standard.

User Connector Diagram

#1 #51

Ground

SECOND CHANNEL 0-

SECOND CHANNEL 0+

SECOND CHANNEL 1­SECOND CHANNEL 1+
SECOND CHANNEL 2­SECOND CHANNEL 2+

Ground

SECOND CLOCK CHANNEL C­SECOND CLOCK CHANNEL C+

Ground
SECOND CHANNEL 3­SECOND CHANNEL 3+
SECOND CHANNEL 4­SECOND CHANNEL 4+

Ground
Ground

Ground

#1 #51

Ver. 0.0 Aug. 5. 2010

Rear view of LCM

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Product Specification

GREEN5

46

100Ω

22

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Table 4. REQUIRED SIGNAL ASSIGNMENT FOR LVDS TRANSMITTER

Liquid Crystal Display

LM240WU4

Host System

30 Bit

RED0
RED1
RED2
RED3
RED4
RED5
RED6
RED7
RED8

RED9
GREEN0
GREEN1
GREEN2
GREEN3
GREEN4

GREEN6

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GREEN7
GREEN8

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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

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+

FI-RE51S-HF

31

30

29

28

25

24

23

21

20

19

18

12

13

14

15

16

17

19

20

22

23

24

25

100Ω

100Ω

100Ω

100Ω

100Ω

LCM Module

Timing

Controller

RO0N

RO0P

RO1N

RO1P

RO2N

RO2P

ROCLKN

ROCLKP

RO3N

RO3P

RO4N

RO4P

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.

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Product Specification

LVDS Input characteristics

1. DC Specification

Description Symbol Min Max Unit Notes

LVDS Differential Voltage |VID| 100 600 mV -

LVDS Common mode Voltage V

LVDS Input Voltage Range V

CM

IN

1.0 1.5 V -

0.7 1.8 V -

LM240WU4

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2. AC Specification

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Tclk

LVDS Clock

LVDS Data

SKEW (Fclk

t

SKEW

t

Description Symbol Min Max Unit Notes

LVDS Clock to Data Skew Margin t

LVDS Clock to Clock Skew Margin
(Even to Odd)

Maximum deviation
of input clock frequency during SSC

Maximum modulation frequency
of input clock during SSC

Ver. 0.0 Aug. 5. 2010

SKEW

t

SKEW_EO

F

DEV

F

MOD

clk

= 1/T

)

- 1/7T

X 0.25 + 1/7T

clk

- 1/7 + 1/7 T

- ± 3 % -

- 200 KHz -

X 0.25 ps -

clk

clk

-

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