LG LM-220WE1-TLA1 Service manual
LM220WE1
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Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
)
(
(
Preliminary Specification
)
Final Specification
●
Title 22” WSXGA+ TFT LCD
BUYER Acer
MODEL
*When you obtain standard approval,
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APPROVED BY
/
/
/
SIGNATURE
DATE
please use the above model name without suffix
APPROVED BY
S.G.Hong / G.Manager
REVIEWED BY
K.H.Choi / Manager
PREPARED BY
S.W.Lee / Engineer
LG.Philips LCD Co., Ltd.SUPPLIER
LM220WE1*MODEL
TLA1SUFFIX
SIGNATURE
DATE
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0 Jan. 10. 2007
MNT Products Engineering Dept.
LG. Philips LCD Co., Ltd
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LM220WE1
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Liquid Crystal Display
Product Specification
Contents
No ITEM Page
COVER
CONTENTS
RECORD OF REVISIONS 3
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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4 OPTICAL SFECIFICATIONS
5 MECHANICAL CHARACTERISTICS
6 RELIABILITY
1
2
4
5
6
6
9
13
14
15
16
17
22
25
7 INTERNATIONAL STANDARDS
7-1 SAFETY
7-2 EMC
8 PACKING
8-1 DESIGNATION OF LOT MARK
8-2 PACKING FORM
9 PRECAUTIONS 28
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Product Specification
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RECORD OF REVISIONS
Revision No Revision Date Page DESCRIPTION
0.1 Oct. 31. 2006 - Preliminary Specification of LM220WE1-TLA1
Update the TBD
1.0 Jan. 10. 2007 - Final Specification
7 Corrected the typo : Lamp Operating Frequency Max
23 Updated the Mechanical drawing (Front view)
24 Updated the Mechanical drawing (Rear view)
LM220WE1
Liquid Crystal Display
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LM220WE1
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Liquid Crystal Display
Product Specification
1. General Description
LM220WE1 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 22 inch diagonally measured
active display area with WSXGA+ resolution (1050 vertical by 1680 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 o f the sub-pixel color is determined w ith a 8-bit gray scale s ignal for each dot,
thus, presenting a palette of more than 16,7M colors with A-FRC(Advanced Frame Rate Control).
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,
high color saturation, and high color are important.
RGB, Dclk, DE
Hsync, Vsync
(LVDS 2 port)
(+5V)
V
LCD
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V
Lamp
V
Lamp
CN1
(30pin)
CN2, 3(2PIN)
CN4, 5(2PIN)
Timing Control
Block
Gate Driver circuit
Power Circuit Block
Backlight Assembly(4 CCFL)
Source Driver Circuit
S1680S1
G1
TFT-LCD Panel
(1680 × 1050 pixels)
G1050
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 16.5(D) mm (Typ.)
Pixel Pitch 0.282mm x 0.282mm
Pixel Format 1680 horiz. By 1050 vert. Pixels RGB strip arrangement
Color Depth 16,7 M colors
Luminance, White 300 cd/m2 (Center 1 point, Typ.)
Viewing Angle (CR>10) Viewing Angle Free ( R/L 160(Typ.), U/D 160(Typ) )
Power Consumption Total 29.25 Watt(Typ.) (4.370 Watt@VLCD, 24.88 Watt@300cd/[LAMP=7.5mA])
Weight 2,800 g (Typ.)
Display Operating Mode Transmissive mode, Normally White
Surface Treatment Hard coating(3H) & Anti-glare (Haze 25%) treatment of the front polarizer
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LM220WE1
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Liquid Crystal Display
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
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.
Wet bulb temperature should be 39 °C Max, and no condensation of water.
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VLCD -0.3 +5.5 Vdc at 25 ± 2 °C
TOP 0 50
TST -20 60
HOP 10 90 %RH 1
HST 10 90 %RH 1
Values
Units
Min Max
°C
°C
90%
60
60%
NotesSymbol
1
1
Wet Bulb
50
Temperature [C]
40
30
20
10
0
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [C]
Ver. 1.0 Jan. 10. 2007
40%
10%
Storage
Operation
Humidity [(%)RH]
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LM220WE1
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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, is typically generated by an inverter. The inverter is an
external unit to the LCDs.
Table 2_1. ELECTRICAL CHARACTERISTICS
Parameter Symbol
Min Typ Max
MODULE :
Power Supply Input Voltage VLCD 4.5 5.0 5.5 Vdc
Power Supply Input Current ILCD
Power Consumption PLCD - 4.370 5.025 Watt 1
Rush current IRUSH - - 3 A 3
Note :
1. The specified current and power consumption are under the V
whereas mosaic pattern(8 x 6) is displayed and f
2. The current is specified at the maximum current pattern.
3. The duration of rush current is about 2ms and rising time of power Input is 500us ± 20%.(min.).
White : 255Gray
Black : 0Gray
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- 874 1005 mA 1
- 1094 1422 mA 2
is the frame frequency.
V
Maximum current pattern
Values
Unit Notes
=5.0V, 25 ± 2°C,fV=60Hz condition
LCD
Ver. 1.0 Jan. 10. 2007
Black PatternMosaic Pattern(8 x 6)
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Product Specification
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Table 2_2. ELECTRICAL CHARACTERISTICS
LM220WE1
Liquid Crystal Display
Parameter Symbol
LAMP :
Operating Voltage VBL 810(8mA) 830(7.5mA) 1000(3mA) V
Operating Current IBL 3.0 7.5 8.0 mA
Established Starting Voltage Vs 1, 3
at 25 °C
at 0 °C
Operating Frequency
Discharge Stabilization Time
Power Consumption
Life Time
Note : The design of the inverter must have specifications for the lamp in LCD Assembly.
The performance of the Lamp in LCM, for e xample life time or brightness, is e xtremely 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
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of the lamp and the inverter (no lighting, flicker, etc) ne ver occurs. When you confirm it, the LCD–
Assembly should be operated in the same condition as installed in you instrument.
※ 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.
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fBL 40 60 70 kHz 4
Ts 3 Min 1, 5
PBL 24.88 27.37 Watt 6
Min Typ Max
50,000 Hrs 1, 7
Values
1,250 V
1,550 V
Unit Notes
RMS
RMS
RMS
RMS
1, 2
1
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 V
(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 horizonta l 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%.
T
is the time required for the brightness of the center of the lamp to be not less than 95%.
S
6. The lamp power consumption shown above does not include loss of external inverter.
The used lamp current is the lamp typical current. (P
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.
Ver. 1.0 Jan. 10. 2007
should be applied to the lamps for more than 1 second for start-up.
S
= VBLx IBLx N
BL
Lamp
)
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LM220WE1
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Liquid Crystal Display
Product Specification
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%
I -p
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
I
(or I –p) / I
p
rms
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3-2. Interface Connections
─LCD Connector(CN1) : FI-XB30SRL-HF11 (Manufactured by JAE) or
MDF76LBRW-30S-1H (Manufactured by Hirose)
─Mating Connector : FI-XC30C2L (Manufactured by JAE) or Equivalent
Table 3. MODULE CONNECTOR(CN1) PIN CONFIGURATION
LM220WE1
Liquid Crystal Display
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
FR0M
FR0P
FR1M
FR1P
FR2M
FR2P
GND
FCLKINM
FCLKINP
FR3M
FR3P
SR0M
SR0P
GND
SR1M
SR1P
GND
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SR2M
SR2P
SCLKINM
SCLKINP
SR3M
SR3P
GND
NC
NC
PWM_OUT
V
LCD
VLCD
VLCD
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)
Minus signal of odd channel 3 (LVDS)
Plus 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)
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
No Connection (I2C Serial interface for P-VCOM)
No Connection (I2C Serial interface for P-VCOM)
PWM_OUT signal for control burst frequency of Inverter
Power Supply +5.0V
Power Supply +5.0V
Power Supply +5.0V
First data
Second data
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.
3. All V
4. Input Level of LVDS signal is based on the IEA 664 Standard.
5. RWM_OUT signal is synchronized with vertical frequency.
Ver. 1.0 Jan. 10. 2007
LCD (power input) pins should be connected together.
It’s frequency is 3 times of vertical frequency, and it’s duty ratio is 50%.
If you don’t use this pin, it is no connection.
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