LG LM-200WD1-TLA1 Service manual

SPECIFICATION

( ) Preliminary Specification
(◆) Final Specification

LM200WD1

Liquid Crystal Display

Product Specification

FOR

APPROVAL

20.0” HD+ TFT LCDTitle

BUYER

MODEL

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SIGNATURE DATE

/

/

/

HP (Innolux)

SUPPLIER LG Display Co., Ltd.

*MODEL LM200WD1

SUFFIX TLA1

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

G.T. KIM / G.Manager

REVIEWED BY

B.C. Song / Manager [C]

J. H. Lee / Manager [M]

D.Y. Seok/ Manager [P]

PREPARED BY

S.J. Yeom/ Engineer

DATE

Please return 1 copy for your confirmation
With your signature and comments.

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Product Engineering Dept.

LG Display Co., Ltd

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Product Specification

Contents

LM200WD1

Liquid Crystal Display

No

COVER
CONTENTS
RECORD OF REVISIONS
GENERAL DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL SPECIFICATIONS

1)

ELECTRICAL CHARACTERISTICS

2)

INTERFACE CONNECTIONS

4)

SIGNAL TIMING SPECIFICATIONS

5)

SIGNAL TIMING WAVEFORMS

6)

COLOR INPUT DATA REFERNECE

7)

POWER SEQUENCE

8)

POWER DIP CONDITION
OPTICAL SFECIFICATIONS

ITEM

Page

1
2
3
41
52
63
6

9
12LVDS characteristics3)
15

16
17
18
19
204

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MECHANICAL CHARACTERISTICS

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RELIABILITY
INTERNATIONAL STANDARDS

1)

SAFETY

2)

EMC

PACKING

1)

DESIGNATION OF LOT MARK

2)

PACKING FORM

265
296
307
30
30
30ENVIRONMENT3)
318
31
31
32PRECAUTIONS9
32MOUNTING PRECAUTIONS1)
32OPERATING PRECAUTIONS2)
33ELECTROSTATIC DISCHARGE CONTROL3)
33PRECAUTIONS FOR STRONG LIGHT EXPOSURE4)
33STROAGE5)
33HANDLING PRECAUTIONS FOR PROTECTION FILM6)

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Product Specification

Record of revisions

Revision No DescriptionDate Page

LM200WD1

Liquid Crystal Display

Ver. 1.0 Dec.,31,2008

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Final Specifications.

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LM200WD1

Liquid Crystal Display

Product Specification

1. General description

LM200WD1-TLA1 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 white mode. It has a

20.0 inch diagonally measured active display area with HD+ resolution (900 vertical by 1600
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 colorswith
Advanced-FRC(Frame Rate Control). It has been designed to apply the interface method that
enables low power, high speed, low EMI. FPD Link or compatible must be used as a LVDS(Low
Voltage Differential Signaling) chip. It is intended to support applications where thin thickness,
wide viewing angle, low power are critical factors and graphic displays are important. In
combination with the vertical arrangement of the sub-pixels, the LM200WD1-TLA1 characteristics
provide an excellent flat panel display for office automation products such as monitors.

FIG. 1 Block diagram

LVDS

pair #1

LVDS

pair #2

CN1

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+5V

VLCD

Power circuit

block

Timing

controller

RGB

CN2, 3 (2pin)
CN4, 5 (2pin)

G1

G900

Source driver circuit

S1

TFT-LCD Panel

(1600×RGB×900 pixels)

Backlight assembly (4 CCFLs)

S1600

General features

Active screen size 20.0 inches (508.05mm) diagonal
Outline Dimension 462.8(H) x 272.0(V) x 17.0(D) mm(Typ.)
Pixel Pitch 0.0922*RGB(H)mmx 0.2766(V)mm
Pixel Format 1600 horizontal By 900 vertical Pixels. RGB stripe arrangement
Interface LVDS 2Port
Color depth 16.7M colors
Luminance, white 300 cd/m2 ( Center 1Point, typ)
Viewing Angle (CR>10) R/L 170(Typ.), U/D 160(Typ.)
Power Consumption
Weight 1,780g (Typ.)
Display operating mode Transmissive mode, normally White
Surface treatments

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Total 26.4W(Typ.), (3.9W@V

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

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, 22.5W@IBL=7.5mA)

LCD

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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

LM200WD1

Liquid Crystal Display

Parameter Notes

Power Supply Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity

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

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

FIG. 2 Temperature and relative humidity

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Wet Bulb
Temperature [℃]

10

0

Symbol

LCD

OP

ST

OP

ST

50

40

30

20

Values

MaxMin

90%

60

60%

40%

10%

Units

°C500T
°C60-20T

%RH9010H
%RH9010H

Storage

Operation

Humidity

[(%)RH]

At 25℃Vdc+6.0-0.3V

1

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

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LM200WD1

Liquid Crystal Display

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/Backlight, is typically
generated by an inverter. The inverter is an external unit to the LCDs.

Table 2. Electrical characteristics

Parameter Symbol

MODULE :
Power Supply Input Voltage
Permissive Power Input Ripple

Power Supply Input Current

Power Consumption
Inrush current

Note :

1. The specified current and power consumption are
under the VLCD=5.0V, 25 ± 2°C,fV=60Hz condition
whereas mosaic pattern(8 x 6) is displayed and fVis the frame frequency.

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

3. Permissive power ripple should be measured under VCC=5.0V, 25°C, fV(frame frequency)=75Hz

conditionand At that time, we recommend the bandwidth configuration of oscilloscope
is to be under 20MHz.

4. The duration of rush current is about 5ms and rising time of power Input is 500us ± 20%.

FIG.3 pattern for Electrical characteristics

power consumption measurement

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LCD

LCD

LCD-MOSAIC

I

LCD-BLACK

LCD

RUSH

Values

MaxTypMin

power input ripple

NotesUnit

Vdc5.55.04.5V

3V0.2--V
1mA935780-I
2mA1140950­1Watt4.73.9-P
3A3.0--I

White : 255Gray
Black : 0Gray

Mosaic Pattern(8 x 6)

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Full Black Pattern

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Product Specification

Table 3. Electrical characteristics

LM200WD1

Liquid Crystal Display

Parameter

LAMP :

Operating Voltage
Operating Current

at 25 °C

at 0 °C
Operating Frequency
Discharge Stabilization Time
Power Consumption

Note :

The design of the inverter must have specifications for the lamp in LCD Assembly.
The performance of the Lamp in LCM, for example life time orbrightness, is extremely
influenced by the characteristics of the DC-AC inverter. So all the parameters of an inverter
should be carefully designed so as not to produce too much leakage current from high-voltage
output of the inverter.
When you design or order the inverter, please make sure unwanted lighting caused by the
mismatch of the lamp and the inverter (no lighting, flicker,etc) never occurs. When you confirm
it, the LCD–Assembly should be operated in the same condition as installed in you instrument.

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Symb

ol

V

BL

BL

BL

S

BL

735

(8.0mA)

Values

750

(7.5mA)

MaxTypMin

925

(2.5mA)

8.07.52.5I

1250
1550

V
V

RMS

RMS

RMS
RMS

NotesUnit

1, 2V

1mA

1, 3VsEstablished Starting Voltage

4kHz70-40f

1, 5Min3--T

6Watt24.822.5P

1, 7Hrs-50,000Life Time

※ Do not attach a conducting tape to lamp connecting wire. If the lamp wire attach to a

conducting tape,TFT-LCD Module has a low luminance and the inverter has abnormal action.
Because leakage current is occurred between lamp wire and conducting tape.

1. Specified values are for a single lamp.

2. Operating voltage is measured at 25 ± 2°C. The variance of the voltage is ± 10%.

3. The voltage above VSshould be applied to the lamps for more than 1 second for start-up.
(Inverter open voltage must be more than lamp startingvoltage.)

Otherwise, the lamps may not be turned on. The used lamp current is the lamp typical current.

4. Lamp frequency may produce interface with horizontal synchronous frequency and as a
result this may cause beat on the display. Therefore lamp frequency shall be as away
possible from the horizontal synchronous frequency and from its harmonics in order to
prevent interference.

5. Let’s define the brightness of the lamp after being lighted for 5 minutes as 100%.

TSis the time required for the brightness of the center of the lamp to be not less than 95%.

6. The lamp power consumption shown above does not include loss of external inverter.

The used lamp current is the lamp typical current. (PBL= VBLx IBLx N

7. The life is determined as the time at which brightness of thelamp is 50% compared to that

of initial value at the typical lamp current on condition of continuous operating at 25 ± 2°C.

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Lamp

)

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Liquid Crystal Display

Product Specification

Note :

8. The output of the inverter must have symmetrical(negative and positive) voltage
waveform and symmetrical current waveform (Unsymmetricalratio is less than 10%).
Please do not use the inverter which has unsymmetrical voltage and unsymmetrical
current and spike wave. Requirements for a system inverter design, which is intended to

have a better display performance, a better power efficiency and a more reliable lamp,

are following.It shall help increase the lamp lifetime and reduce leakage current.

a. The asymmetry rate of the inverter waveform should be less than 10%.
b. The distortion rate of the waveform should be within √2 ±10%.

* Inverter output waveform had better be more similar to ideal sine wave.

* Asymmetry rate:

LM200WD1

I p

I -p

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9. The inverter which is combined with this LCM, is highly recommended to connect
coupling(ballast) condenser at the high voltage output side. When you use the inverter
which has not coupling(ballast) condenser, it may cause abnormal lamp lighting because
of biased mercury as time goes.

10.In case of edgy type back light with over 4 parallel lamps, input current and voltage

wave form should be synchronized

| I p– I –p| / I

* Distortion rate

I p(or I –p) / I

rms

rms

x 100%

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Liquid Crystal Display

Product Specification

3-2. Interface connections

LCD connector(CN1) : 187034-30091 (P-TWO) , GT103-30S-HF15-E2500(LS)
Mating connector : FI-X30H and FI-X30HL (JAE) or Equivalent

Table 4. Module connector(CN1) pin configuration

LM200WD1

Pin No

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
27
28
29
30

Symbol Description

RXO0­RXO0+
RXO1­RXO1+
RXO2­RXO2+
GND
RXOC­RXOC+
RXO3­RXO3+
RXE0-

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RXE0+

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GND
RXE1­RXE1+
GND
RXE2­RXE2+
RXEC­RXEC+
RXE3­RXE3+
GND
NC
NC

PWM_OUT

VLCD
VLCD
VLCD

Minus signal of 1st channel 0 (LVDS)
Plus signal of 1st channel 0 (LVDS)
Minus signal of 1st channel 1 (LVDS)
Plus signal of 1st channel 1 (LVDS)
Minus signal of 1st channel 2 (LVDS)
Plus signal of 1st channel 2 (LVDS)
Ground (AGP)
Minus signal of 1st clock channel (LVDS)
Plus signal of 1st clock channel (LVDS)
Minus signal of 1st channel 3 (LVDS)
Plus signal of 1st channel 3 (LVDS)
Minus signal of 2nd channel 0 (LVDS)
Plus signal of 2nd channel 0 (LVDS)
Ground
Minus signal of 2nd channel 1 (LVDS)
Plus signal of 2nd channel 1 (LVDS)
Ground
Minus signal of 2nd channel 2 (LVDS)
Plus signal of 2nd channel 2 (LVDS)
Minus signal of 2nd clock channel (LVDS)
Plus signal of 2nd clock channel (LVDS)
Minus signal of 2nd channel 3 (LVDS)
Plus signal of 2nd channel 3 (LVDS)
Ground
No Connection (For LCD internal use only.)
No Connection (For LCD internal use only.)
Reference signal for inverter control
Power Supply (5.0V)
Power Supply (5.0V)
Power Supply (5.0V)

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FIG. 4 Connector diagram

#1 #30

1’st signal pairs

Product Specification

187034-30091 (P-TWO)

#
1

2’nd signal pairs

PWM_OUT

Rear view of LCM

LM200WD1

Liquid Crystal Display

#30

Power(+5V)

Note:

1. NC: No Connection.

2. All GND(ground) pins should be connected together and to Vss which should also
be connected to the LCD’s metal frame.

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3. All V

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

5. PWM_OUT is a reference signal for inverter control.
This PWM signal is synchronized with vertical frequency.
Its frequency is 3 times of vertical frequency, and its duty ratio is 50%.
If the system don’t use this pin, do not connect.

(power input) pins should be connected together.

LCD

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