LG LM-201WE3-TLK3 Service manual
LM201WE3
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
)
(
(
Preliminary Specification
)
Final Specification
●
20.1” WSXGA+ TFT LCDTitle
BUYER
MODEL
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APPROVED BY
/
/
/
Dell (Lite-on)
SIGNATURE
DATE
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
Hans. Kim / G.Manager
REVIEWED BY
C. K. LEE / Manager [C]
J. H. LEE / Manager [M]
Y. S. Lee / Manager [P]
PREPARED BY
J.H. Oh / Engineer
LG Display Co., Ltd.SUPPLIER
LM201WE3*MODEL
TLK3SUFFIX
SIGNATURE
DATE
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0 May. 16. 2008
MNT Products Engineering Dept.
LG Display Co., Ltd
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Product Specification
Contents
LM201WE3
Liquid Crystal Display
PageITEMNo
COVER
CONTENTS
GENERAL DESCRIPTION1
ABSOLUTE MAXIMUM RATINGS2
ELECTRICAL SPECIFICATIONS3
ELECTRICAL CHARACTREISTICS3-1
INTERFACE CONNECTIONS3-2
SIGNAL TIMING SPECIFICATIONS3-3
SIGNAL TIMING WAVEFORMS3-4
COLOR INPUT DATA REFERNECE3-5
POWER SEQUENCE3-6
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VCC POWER DIP CONDITION3-7
OPTICAL SFECIFICATIONS4
MECHANICAL CHARACTERISTICS5
1
2
3RECORD OF REVISIONS
4
5
6
6
9
16
17
18
19
20
21
25
RELIABILITY6
INTERNATIONAL STANDARDS7
SAFETY7-1
EMC7-2
PACKING8
DESIGNATION OF LOT MARK8-1
PACKING FORM8-2
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29
29
29
30
30
30
31PRECAUTIONS9
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Product Specification
RECORD OF REVISIONS
Preliminary Specification of LM201WE3-TLK3-Feb. 19. 20080.0
Updated the Color coordinates. (Gx, Gy, Bx)21Apr. 15. 20080.1
Updated Mechanical Drawing (Front & Rear)26,27May. 15. 20081.0
Final Specification-
LM201WE3
Liquid Crystal Display
DESCRIPTIONPageRevision DateRevision No
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Ver. 1.0 May. 16. 2008
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LM201WE3
Liquid Crystal Display
Product Specification
1. General Description
LM201WE3 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 20.1 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 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 A-FRC(Advanced Frame Rate Control).
It has been designed to apply the 8Bit 2 port LVDS interface.
I t is in t end e d t o s u p po rt d isp l a ys w h e re hig h br i g htne s s , s u p er wid e v i e wing ang l e ,
high color saturation, and high color are important.
RGB, Dclk, DE
Hsync, Vsync
(LVDS 2 port)
V
(+5V)
LCD
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V
Lamp
V
Lamp
General Features
CN1
(30pin)
CN2, 3(2PIN)
CN4, 5(2PIN)
Timing Control
Block
Power Circuit Block
Figure 1. Block diagram
20.1 inches(511.133mm) diagonal (Aspect ratio 16:10)Active Screen Size
459.4(H) x 296.4 (V) x 16.5(D) mm (Typ.)Outline Dimension
0.258mm x 0.258mmPixel Pitch
1680 horiz. By 1050 vert. Pixels RGB strip arrangementPixel Format
Source Driver Circuit
S1680S1
Gate Driver circuit
G1
TFT-LCD Panel
(1680 × 1050 pixels)
G1050
Backlight Assembly(4 CCFL)
16,7 M colorsColor Depth
300 cd/m2 (Center 1 point, Typ.)Luminance, White
Viewing Angle Free ( R/L 170(Typ.), U/D 160(Typ) )Viewing Angle (CR>10)
Total 26.98 Watt(Typ.) (4.78 Watt@VLCD, 22.2 Watt@300cd/[LAMP=(7.5mA)])Power Consumption
2,100 g (Typ.)Weight
Transmissive mode, Normally WhiteDisplay Operating Mode
Hard coating(3H) & Anti-Glare treatment of the front polarizerSurface Treatment
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LM201WE3
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 Notes
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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Symbol
Values
MaxMin
500TOP
60-20TST
90%
60
60%
Units
°C
°C
at 25 ± 2 °CVdc+5.5-0.3VLCD
1
1
1%RH9010HOP
1%RH9010HST
Wet Bulb
50
Temperature [C]
40
30
20
10
0
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [C]
Figure 2. Temperature and relative humidity
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40%
10%
Storage
Operation
Humidity [(%)RH]
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LM201WE3
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. ELECTRICAL CHARACTERISTICS
Parameter Symbol
MODULE :
Differential Impedance
LAMP :
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Operating Frequency
Discharge Stabilization Time
Power Consumption
Life Time
at 25 °C
at 0 °C
Values
MaxTypMin
Vdc5.55.04.5VLCDPower Supply Input Voltage
ILCDPower Supply Input Current
Zm
11010090
900740725VBLOperating Voltage
8.07.53.0IBLOperating Current
1,250
1,550
ohm
RMS
RMS
V
RMS
V
RMS
NotesUnit
13mV100--VRFPermissive Power Input Ripple
1mA1099955-
2mA14891145-
1Watt5.494.78-PLCDPower Consumption
3A3--IRUSHRush current
4, 5V
4mA
4, 6VsEstablished Starting Voltage
7kHz706040fBL
4, 8Min3Ts
9Watt24.422.2PBL
4, 10Hrs50,000
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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LM201WE3
Liquid Crystal Display
Product Specification
Note. 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. The specified current and power consumption are under the V
whereas mosaic pattern(8 x 6) is displayed and fVis the frame frequency.
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.).
4. Specified values are for a single lamp.
5. Operating voltage is measured at 25 ± 2°C. The variance of the voltage is ± 10%.
6. 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.
7. 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.
8. L e t ’ s def i n e the b r i g h t ness of t h e l a m p af t e r b e i n g l i g hted f or 5 m in utes as 1 0 0%.
TSis the time required for the brightness of the center of the lamp to be not less than 95%.
9. 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
10. 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.
11. 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.
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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.
=5.0V, 25 ± 2°C,fV=60Hz condition
LCD
)
Lamp
* Asymmetry rate:
I p
I -p
12. 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.
13. Permissive power ripple should be measured under V
condition and At that time, we recommend the bandwidth configuration of oscilloscope is to be under
20Mhz. See the figure 3.
14. 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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| I p– I –p| / I
* Distortion rate
I p(or I –p) / I
=5.0V, 25°C, fV(frame frequency)=MAX
LCD
rms
rms
x 100%
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Product Specification
LM201WE3
Liquid Crystal Display
• Permissive Power input ripple (V
White pattern
• Power consumption (V
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=5.0V, 25°C, fV (frame frequency=60Hz condition)
LCD
=5.0V, 25°C, fV(frame frequency)=MAX condition)
LCD
Black pattern
Typical power Pattern
[ Figure 3 ] Mosaic pattern & Black Pattern for power consumption measurement
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Max power Pattern
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LM201WE3
Liquid Crystal Display
Product Specification
3-2. Interface Connections
Interface chip must be used LVDS, part No. THC63LVD823 (Tx, THINE) or compatible.
This LCD employs a interface connection, a 30 pin connector is used for the module electronics interface.
Four 2pin connectors are used for the integral backlight system. The electronics interface connector is
a model IS100-L30O-C23 manufactured by UJU or compatible.
And mating connector is FI-X30C2L or it’s compatible manufactured by JAE.
The pin configuration for the connector is shown in the table 3 and the signal mapping with LVDS transmitter
is shown in the table 4.
Table 3. MODULE CONNECTOR(CN1) PIN CONFIGURATION
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
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SR0M
SR0P
GND
SR1M
SR1P
GND
SR2M
SR2P
SCLKINM
SCLKINP
SR3M
SR3P
GND
NC
NC
PWM_OUT
VLCD
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
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#1
LM201WE3
Liquid Crystal Display
Product Specification
IS100-L30O-C23 (UJU)
#30
1’st signal pairs
2’nd signal pairs
PWM_out
#1
PCB
[ Figure 4 ] User Connector diagram
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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.
Input connector
BackLight
Rear view of LCM
Power(5V)
#30
PCB
3. All VLCD (power input) pins should be connected together.
4. Input Level of LVDS signal is based on the IEA 664 Standard.
5. PWM_OUT signal controls the burst frequency of a inverter.
This signal is synchronized with vertical frequency.
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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