LG LM-220WE1-TLP1 Service manual

No

ITEM

P

5)

SIGNAL TIMING WAVEFORMS

16

1)

DESIGNATION OF LOT MARK

30

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LM220WE1

Liquid Crystal Display

Product Specification

Contents

age

COVER 1

CONTENTS 2

RECORD OF REVISIONS 3

1 GENERAL DESCRIPTION 4

2 ABSOLUTE MAXIMUM RATINGS 5

3 ELECTRICAL SPECIFICATIONS 6

1) ELECTRICAL CHARACTERISTICS 6

2) INTERFACE CONNECTIONS 9

3) LVDS characteristics 12

4) SIGNAL TIMING SPECIFICATIONS 15

6) COLOR INPUT DATA REFERNECE 17

7) POWER SEQUENCE 18

8) POWER DIP CONDITION 19

4 OPTICAL SPECIFICATIONS 20

5 MECHANICAL CHARACTERISTICS 25

6RELIABILITY 28

7 INTERNATIONAL STANDARDS 29

8PACKING 30

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1) SAFETY 29

2) EMC 29

2) PACKING FORM 30

9PRECAUTIONS 31

1) MOUNTING PRECAUTIONS 31

2) OPERATING PRECAUTIONS 31

3) ELECTROSTATIC DISCHARGE CONTROL 32

4) PRECAUTIONS FOR STRONG LIGHT EXPOSURE 32

5) STROAGE 32

6) HANDLING PRECAUTIONS FOR PROTECTION FILM 32

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Product Specification

Revision No

Description

Date

Page

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Record of revisions

LM220WE1

Liquid Crystal Display

Ver. 0.0

Ver. 1.0

Jan., 15, 2009

Jul., 01, 2009

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First Draft, Preliminary Specifications

First Draft, Final Specifications

Ver. 1.0 Jul., 01, 2009

3/ 32

Lamp(CCFL) backlight system. The matrix employs a

Thin Film Transistor as the active element. It is a

Pixel Pitch

0.282mm x 0.282mm

P

Total 17.71W (T

(5.25W@V

12.46W@I

A)

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LM220WE1

Liquid Crystal Display

Product Specification

1. General description

LM220WE1-TLP1 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent

-Si
transmissive type display operating in the normally white mode. It has a 22 inch diagonally measured active
display area with WSXGA+ resolution (1050 vertical by 1680 horizonta l 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 colors with 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 LM220WE1-TLP1 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

(30pin)

+5V

VLCD

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Power circuit

Timing

controller

block

V

Lamp

V

Lamp

RGB

CN2 (2pin)

CN3 (2pin)

Source driver circuit

S1

G1

TFT-LCD Panel

(1680×RGB×1050 pixels)

G1050

Backlight assembly (2 CCFLs)

S1680

General features

Active screen size 21.995 inches(558.673mm) diagonal (Aspect ratio 16:10)

Outline Dimension 493.7(H) x 320.1 (V) x 14.5(D) mm (Typ.)

Pixel Format 1680 horizontal By 1050 vertical Pixels. RGB stripe arrangement

Interface LVDS 2Port

Color depth 16.7M colors

Luminance, white 250 cd/m

Viewing Angle (CR>10) R/L 170(Typ.), U/D 160(Typ.)

ower Consumption

Weight 2,350g (Typ.)

Display operating mode Transmissive mode, normally White

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

Ver. 1.0 Jul., 01, 2009

2

( Center 1Point, typ)

yp.),

LCD

,

=7.5m

BL

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Product Specification

may cause faulty operation or damage to the unit.

Wet bulb temperature should be 39

C Max, and no condensation of water.

10%

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2. Absolute maximum ratings

The following are maximum values which, if exceeded,

Table 1. Absolute maximum ratings

LM220WE1

Liquid Crystal Display

Parameter Symbol

Power Supply Input Voltage V

Operating Temperature T

Storage Temperature T

Operating Ambient Humidity H

Storage Humidity H

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

FIG. 2 Temperature and relative humidity

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Wet Bulb
Temperature [℃]

20

10

0

LCD

OP

ST

OP

ST

°

50

40

30

Values

Min Max

-0.3 +6.0 Vdc

050

-20 60

10 90 %RH

10 90 %RH

90%

60

60%

40%

Units Notes

°C

°C

Humidity

[(%)RH]

Storage

Operation

At 25℃

1

10 20 30 40 50 60 70 800-20

Dry Bulb Temperature [℃]

Ver. 1.0 Jul., 01, 2009

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It

d t

the LCD elect

d to drive th

Inrush current

I

5A3

is to be under 20M

H

z

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LM220WE1

Liquid Crystal Display

Product Specification

3. Electrical specifications
3-1. Electrical characteristics

requires two power inputs. One is employe
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

o power

ronics an

e

Parameter Symbol

MODULE :

Power Supply Input Voltage V

Permissive Power Input Ripple V

Power Supply Input Current

Power Consumption P

Note :

1. The specified current and power consumption are

LCD

under the V

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

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

3. Permissive power ripple should be measured under VCC=5.0V, 25°C, f

condition and At that time, we recommend the bandwidth configuration of oscilloscope

4. The duration of rush current is about 2ms and rising time of power Input is 500us ± 20%.

FIG.3 pattern for Electrical characteristic s

=5.0V, 25 ± 2°C,fV=60Hz condition

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.

LCD

LCD

I

LCD-MOSAIC

I

LCD-BLACK

LCD

RUSH

Min Typ Max

4.5 5.0 5.5 Vdc

--0.2 V 3

- 1050 1210 mA 1

- 1220 1380 mA 2

- 5.25 6.05 Watt 1

--3.

Values

is the frame frequency.

V

Unit Notes

(frame frequency)=75Hz

V

power consumption measurement power input ripple

White : 255Gray
Black : 0Gray

Mosaic Pattern(8 x 6)

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Full Black Pattern

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Values

at 25

°

C

1,250

V

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

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LM220WE1

Liquid Crystal Display

Product Specification

Table 3. Electrical characteristics

Parameter Symbol

LAMP :

Operating Voltage V

Operating Current I
Established Starting Voltage Vs 1, 3

at 0 °C

Operating Frequency f

Discharge Stabilization Time T

Power Consumption P

Life Time 50,000 - Hrs 1, 7

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 or brightness, 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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BL

BL

BL

S

BL

Min Typ Max

810

(8.0mA)

3.0 7.5 8.0 mA

40 60 80 kHz 4

--3Min1, 5

830

(7.5mA)

12.46 13.71 Watt 6

1000

(3.0mA)

1,550 V

Unit Notes

V

RMS

RMS

RMS

RMS

1, 2

1

※ 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 starting voltage.)

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%.

.

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 the lamp 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

I

p

pg( ) , y pg g

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Product Specification

Note :

8. The output of the inverter must have symmetrical(negative and positive) voltage
waveform and symmetrical current waveform (Unsymmetrical ratio 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:

I

p

|I

p

–I–p|/I

rms

x 100%

LM220WE1

-

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

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* Distortion rate

Ip(or I–p)/I

rms

Ver. 1.0 Jul., 01, 2009

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30S-H23 (LSM)

C23 (

)

)

7

GND

Ground

20

RXEC

Minus signal of 2nd clock channel (LVDS)

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LM220WE1

Liquid Crystal Display

Product Specification

3-2. Interface connections

LCD connector(CN1) : GT103-

Mating connector : FI-X30H and FI-X30HL (JAE) or Equivalent

Table 4. Module connector(CN1) pin configuration

Pin No

1
2
3
4
5
6

8

9
10
11
12
13
14
15
16
17
18
19

21
22
23
24
25
26
27
28
29
30

Symbol Description

RXO0­RXO0+
RXO1­RXO1+
RXO2­RXO2+

RXOC­RXOC+
RXO3­RXO3+
RXE0-

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RXE0+
GND
RXE1­RXE1+
GND
RXE2­RXE2+

­RXEC+
RXE3­RXE3+
GND
NC
NC

PWM_OUT

LCD

V

LCD

V
V

LCD

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)

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)

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 burst frequency inverter control
Power Supply (5.0V)
Power Supply (5.0V)
Power Supply (5.0V)

, IS100-L30B-

UJU

First Pixel data

Second Pixel data

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

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LM220WE1

Liquid Crystal Display

Product Specification

FIG. 4 Connector diagram

GT103-30S-H23 (LGM)

#1 #30

1’st signal pairs

2’nd signal pairs

Note:

Power(+5V)

PWM_OUT

Rear view of LCM

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

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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1HVHigh Voltage for Lamp

1

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LM220WE1

Liquid Crystal Display

Product Specification

The backlight interface connector is a model 35001HS-02LD manufactured by YEONHO.
The mating connector part number are 35001WR-02L(2pin) or equivalent.
The pin configuration for the connector is shown in the table below.

Table 5. Backlight connector pin configuration(CN2,CN3,CN4,CN5)

Pin Symbol Description Notes

2LV Low Voltage for Lamp 2

Note : 1. The high voltage power terminal is colored Sky blue.

2. The low voltage pin color is Black.

3. The backlight ground should be common with LCD metal frame.

FIG. 5 Backlight connector view

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Sky Blue

CN2, CN3

Black

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