LG LM-240WU4-SLA1 Service manual

( ● ) Preliminary Specification
( ● ) Final Specification

LM240WU4

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

24.0” WUXGA TFT LCDTitle

BUYER

MODEL

www.jxlcd.com

www.jxlcd.com

APPROVED BY

/

/

/

SIGNATURE

DATE

SUPPLIER LG Display Co., Ltd.

*MODEL LM240WU4

SUFFIX SLA1

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

REVIEWED BY

PREPARED BY

SIGNATURE

DATE

Please return 1 copy for your confirmation with

your signature and comments.

Ver. 1.0 Apr. 21 . 2008

MNT Products Engineering Dept.

LG. Philips LCD Co., Ltd

1/ 34

LM240WU4

4

OPTICAL SFECIFICATIONS

72EMC

29

Liquid Crystal Display

Product Specification

Contents

No ITEM Page

COVER

CONTENTS

RECORD OF REVISIONS

1 GENERAL DESCRIPTION

2 ABSOLUTE MAXIMUM RATINGS

3 ELECTRICAL SPECIFICATIONS

3-1 ELECTRICAL CHARACTREISTICS

3-2 INTERFACE CONNECTIONS

3-3 SIGNAL TIMING SPECIFICATIONS

3-4 SIGNAL TIMING WAVEFORMS

3-5 COLOR INPUT DATA REFERNECE

3-6 POWER SEQUENCE

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3-7 POWER SEQUENCE FOR INVERTER

5 MECHANICAL CHARACTERISTICS

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1

2

3

4

5

6

6

8

14

15

16

17

18

19

25

6 RELIABLITY

7 INTERNATIONAL STANDARDS

7-1 SAFETY

-

8PACKING

8-1 DESIGNATION OF LOT MARK

8-2 PACKING FORM

8-3 PALLET FORM 32

9 PRECAUTIONS 33

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28

29

29

30

30

31

2/ 34

Product Specification

18

(

)

31

Updated the Packing Form

RECORD OF REVISIONS

LM240WU4

Liquid Crystal Display

Revision

No

0.0 Oct.19. 2007 - First Draft(Preliminary)

0.1 Dec. 20. 2007 4,6,25 TBD is update

1.0 Apr. 21. 2008 4 Update the Power Consumption

Revision Date Page Description

Change the Inverter Power Sequence

T1 Min 1→20, T2 Min 200→500

19

26,27

7 Update the Inverter Input Current, Power

8

13

19 Update the Chromaticity

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26, 27

Change the Min CR (600→700), Tr/Tf (TBD/TBD→6.0/7.0)

Update the Mechanical Drawing (Tilt 1.0→1.4)

: Inverter Input CNT is moved 4mm inside

Change the Inverter Vbr Min Vlotage (0V→0.3V)

Change the T2 Refer page (page 14 → page 17)

Change the Inverter Vbr Min Vlotage (0V→0.3V)

Updated the Mechanical Drawing

Ver. 1.0 Apr. 21 . 2008

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LM240WU4

LM

240WU4isa

Color

Active

Matrix

Liquid

Crystal

Display

withanintegral

Cold

Cathode

Fluorescent

high

high

T

Controller

(H)

)

+24.0V

() () () (yp)

Power Consumption

Total

82

Watt (Typ.) ( 7.02 Watt

@V

LCD

8Watt@V

)

Liquid Crystal Display

Product Specification

1. General Description

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
active display area with WUXGA resolution (1200 vertical by 1920 horizontal pixel array)
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 8-bit gray scale signal for each dot,
thus, presenting a palette of more than 16,7M(True) colors.
It has been designed to apply the 8Bit 2 port LVDS interface.
It is intended to support displays where high brightness, super wide viewing angle,

color saturation, and

color are important.

RGB

LVDS

2port

+12.0V

GND

CN1

(30pin)

+12.0V

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CN2

(14Pin)

Timing

Power Circuit

Block

Inverter

Block

2pin x 7CNs (High)

Gate

Driver Circuit

General Features

Active Screen Size 24.1 inches(61.32cm) diagonal

Outline Dimension 546.4

Pixel Pitch 0.270 mm x 0.270 mm

x 352.0(V) x 40.3(D) mm(Typ.

Source Driver Circuit

S1 S1920

G1

FT - LCD Panel

(1920 × RGB × 1200 pixels)

G1200

Back light Assembly

(U-Shape 7CCFL)

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

Color Depth 8-bit, 16,777,216 colors

Luminance, White 400 cd/m

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

Weight 2790 g (typ.)

Display Operating Mode Transmissive mode, normally black

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

Ver. 1.0 Apr. 21 . 2008

2

( Center 1 points)

71.

, 64.

DDB

4/ 34

Product Specification

The following

Wet bulb temperature should be 39

Max, and no condensation of water

0

2. Absolute Maximum Ratings

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

Table 1. ABSOLUTE MAXIMUM RATINGS

LM240WU4

Liquid Crystal Display

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 [C]

20

10

VLCD -0.3 14 Vdc at 25 ± 2°C

TOP 050

TST -20 60

HOP 10 90 %RH

HST 10 90 %RH

C

50

40

30

Values

Min Max

°

90%

60

60%

40%

10%

Units Notes

°C

°C

.

Storage

Operation

Humidity [(%)RH]

1, 2

Ver. 1.0 Apr. 21 . 2008

10 20 30 40 50 60 70 800-20

Dry Bulb Temperature [C]

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LM240WU4

3-1. El

Parameter

Symbol

Unit

Notes

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

Liquid Crystal Display

Product Specification

3. Electrical Specifications
ectrical 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

Values

Min Typ Max

MODULE :

Power Supply Input Voltage V

Permissive Power Input Ripple V

Power Supply Input Current I

Power Consumption

Rush current IRUSH --3.0A4

Note :

1. Permissive power ripple should be measured under V

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

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.).

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LCD 11.4 12.0 12.6 Vdc

RF 400 mVp-p 1

LCD

PLCD TYP - 7.02 8.07 Watt 2

PLCD MAX - 9.18 10.56 Watt 2

- 585 673 mA 2

- 765 880 mA 3

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

LCD

=12.0V, 25 ± 2°C,fV=60Hz condition

is the frame frequency.

V

LCD

.

White Pattern

< Permissive Power Input Ripple (V

Ver. 1.0 Apr. 21 . 2008

=12.0V, 25 ± 2°C,f

LCD

Black Pattern

=60Hz) >

V

6/ 34

Typical current pattern

(White : 255Gray, Black : 0Gray)

p

value at the typical lamp current on condition of continuous operating at 25

±

2

C

LM240WU4

Liquid Crystal Display

Product Specification

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 Current I

Input Power P

B/L on/off control V

Brightness Adj V

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LAMP :

Life time

DDB

B

ON/OFF

BR

V

= 3.3V

VBR= 3.3V

Lamp ON = High

Lamp OFF =Low

=12.0V, 25 ± 2°C,f

LCD

White Pattern

=60Hz) >

V

Values

Min. Typ. Max.

22 24.0 26 V 1

- 2.7 3.2 A2

- 64.8 84.5 Watt 2

2.0 - 5.0 V

0.0 - 0.8 V

0.3 -3.3V3

40,000 Hrs 4

Unit Notes

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. Dimming Start voltage will be set at 3.2V±3%(0.096V) considering IC and components deviation.

4. The life is determined as the time at which luminance of the lamp is 50% compared to that of initial

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. 1.0 Apr. 21 . 2008

°

.

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Liquid Crystal Display

ypy

p

11

FR3P

Plus signal of odd channel 3 (LVDS)

26

OPEN

NC

Product Specification

3-2. Interface Connections

3-2-1. LCD Module

-LCD Connector(CN1). : KDF71G-30S-1H (Manufactured by HIROSE) or Equivalent

ISL100-L30B-C23(UJU), GT103-30S-H23 (LS cable)

- Mating Connector : FI-XC30C2L (Manufactured by JAE) or Equivalent

Table 3 MODULE CONNECTOR(CN1) PIN CONFIGURATION

No Symbol Description No Symbol Description

LM240WU4

1FR0M

2FR0P

3FR1M

4FR1P

5FR2M

6FR2P

7 GND

8FCLKINM

9FCLKINP

10 FR3M

12 SR0M

13 SR0P

14 GND

15 SR1M

Minus signal of odd channel 0 (LVDS)

Plus signal of odd channel 0 (LVDS)

Minus signal of odd channel 1 (LVDS)

Plus signal of odd channel 1 (LVDS)

Minus signal of odd channel 2 (LVDS)

Plus signal of odd channel 2 (LVDS)

Ground

Minus signal of odd clock channel (LVDS)

Plus signal of odd clock channel (LVDS)

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Minus signal of odd channel 3 (LVDS)

Minus signal of even channel 0 (LVDS)

Plus signal of even channel 0 (LVDS)

Ground

Minus signal of even channel 1 (LVDS)

16 SR1P

17 GND

18 SR2M

19 SR2P

20 SCLKINM

21 SCLKINP

22 SR3M

23 SR3P

24 GND

25 OPEN

27 DCR_OUT

ODC on/off

28

29 VLCD

30 VLCD

Plus signal of even channel 1 (LVDS)

Ground

Minus signal of even channel 2 (LVDS)

Plus signal of even channel 2 (LVDS)

Minus signal of even clock channel (LVDS)

Plus signal of even clock channel (LVDS)

Minus signal of even channel 3 (LVDS)

Plus signal of even channel 3 (LVDS)

Ground

NC

Dynamic C/R output

ODC_ON_OFF_Control [* note 4 ]
L : ODC_ON , H : ODC_OFF
Default : ODC_ON ( No connection)

Power Supply +12.0V

Power Supply +12.0V

Note: 1. All GND(ground) pins should be connected together and to Vss which should also be connected to

the LCD’s metal frame.

2. All V

Ver. 1.0 Apr. 21 . 2008

LCD (power input) pins should be connected together.

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

4. In ODC off Case , When Power Start up, Sequence must keep as : V
* T2 : Time interval between V

LCD > T2 > ODC_OFF (‘H’)

LCD and RGB data, refer to page 17.

User Connector Diagram

1

30

#1 #30

Rear view of LCM

KDF71G-30S-1H(HIROSE)

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LM240WU4

16

TTL Input (B6)

D1644Power Supply for LVDS

LVDS V

CC

T

T

Liquid Crystal Display

Product Specification

Table 4. REQUIRED SIGNAL ASSIGNMENT FOR Flat Link (TI:SN75LVDS83) Transmitter

Pin # Require SignalPin Name Pin # Require SignalPin Name

1 Power Supply for TTL InputVCC 29 Ground pin for TTLGND

2 TTL Input (R7)D5 30 TTL Input (DE)D26

3 TTL Input (R5)D6 31 TTL Level clock InputTXCLKIN

4 TTL Input (G0)D7 32 Power Down InputPWR DWN

5 Ground pin for TTLGND 33 Ground pin for PLLPLL GND

6 TTL Input (G1)D8 34 Power Supply for PLLPLL VCC

7 TTL Input (G2)D9 35 Ground pin for PLLPLL GND

8 TTL Input (G6)D10 36 Ground pin for LVDSLVDS GND

9 Power Supply for TTL InputVCC 37 Positive LVDS differential data output 3

10 TTL Input (G7)D11 38 Negative LVDS differential data output 3

11 TTL Input (G3)D12 39 Positive LVDS differential clock output

12 TTL Input (G4)D13 40 Negative LVDS differential clock output

13 Ground pin for TTLGND 41 Positive LVDS differential data output 2

14 TTL Input (G5)D14 42 Negative LVDS differential data output 2

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15 TTL Input (B0)D15 43 Ground pin for LVDSLVDS GND

17 Power Supply for TTL InputVCC 45 Positive LVDS differential data output 1

18 TTL Input (B7)D17

19 TTL Input (B1)D18

20 TTL Input (B2)D19

22

23 TTL Input (B4)D21

24 TTL Input (B5)D22

25 TTL Input (RSVD)D23

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46 Negative LVDS differential data output 1

47 Positive LVDS differential data output 0

48 Negative LVDS differential data output 0

49 Ground pin for LVDSLVDS GND21 Ground pin for TTL InputGND

TL Input (B3)D20

50

51 TTL Input (R0)D0

52 TTL Input (R1)D1

53 Ground pin for TTLGND

TxOUT3＋

TxOUT3－

TXCLKOUT＋

TXCLKOUT－

TXOUT2＋

TXOUT2－

TXOUT1＋

TXOUT1－

TXOUT0＋

TXOUT0－

TL Input (R6)D27

26 Power Supply for TTL InputVCC 54 TTL Input (R2)D2

Notes : Refer to LVDS Transmitter Data Sheet for detail descriptions.

Ver. 1.0 Apr. 21 . 2008

55 TTL Input (R3)D327 TTL Input (HSYNC)D24

56 TTL Input (R4)D428 TTL Input (VSYNC)D25

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LVDS Input characteristics

F

V

-±3%-

1. DC Specification

LM240WU4

Liquid Crystal Display

Product Specification

Description Symbol Min Max Unit Notes

LVDS Differential Voltage |VID| 100 600 mV -

LVDS Common mode Voltage V

LVDS Input Voltage Range V

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2. AC Specification

LVDS Clock to Data Skew Margin

LVDS Clock to Clock Skew Margin (Even to Odd) t

Maximum deviation
of input clock frequency during SSC

Maximum modulation frequency
of input clock during SSC

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Description Symbol Min Max Unit Notes

CM

IN

t

SKEW

t

SKEW

SKEW_EO

DE

F

MOD

0.6 1.8 V -

0.3 2.1 V -

- 400 + 400 ps 85MHz > Fclk ≥ 65MHz

- 600 + 600 ps 65MHz > Fclk ≥ 25MHz

-1/7 + 1/7 T

- 200 KHz -

clk

-

Ver. 1.0 Apr. 21 . 2008

10 / 34

Freq.

F

)

F

max

F

center

Product Specification

< Clock skew margin between channel >

LM240WU4

Liquid Crystal Display

F

* F

center

DEV

min

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3. Data Format

1) LVDS 2 Port

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1

F

MOD

< Spread Spectrum >

Time

< LVDS Data Format >

Ver. 1.0 Apr. 21 . 2008

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