LG LM-240WU3-TLD1 Service manual
( ) Preliminary Specification
(
) Final Specification
LM240WU3
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
24” WUXGA TFT LCDTitle
BUYER
MODEL
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APPROVED BY
/
/
/
LGE
SIGNATURE
DATE
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
H.S. KIM / G.Manager
REVIEWED BY
C.K. LEE / Manager [C]
K.H. MOON / Manager [M]
Y.S. Lee / Manager [P]
PREPARED BY
S.H. Han / Engineer
LG.Philips LCD Co., Ltd.SUPPLIER
LM240WU3*MODEL
TLD1SUFFIX
DATE
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0 July. 23. 2008
Product Engineering Dept.
LG. Display Co., Ltd
1 / 36
Product Specification
Contents
LM240WU3
Liquid Crystal Display
PageITEMNo
COVER
CONTENTS
RECORD OF REVISIONS
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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OPTICAL SFECIFICATIONS4
MECHANICAL CHARACTERISTICS5
RELIABLITY6
1
2
3
4
5
6
7
9
13
14
15
16
18
22
25
INTERNATIONAL STANDARDS7
SAFETY7-1
EMC7-2
PACKING8
DESIGNATION OF LOT MARK8-1
PACKING FORM8-2
PRECAUTIONS9
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Product Specification
RECORD OF REVISIONS
LM240WU3
Liquid Crystal Display
Revision
No
DescriptionPageRevision Date
Preliminary Specifications-Mar. 28. 20080.0
29Apr. 23. 20080.1
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The Condition of Vibration Test was Changed
10-500Hz 10-300Hz
Final Specifications-July. 23. 20081.0
Updated the OPTICAL CHARACTERISTICS (By: 0.060˧0.067)22
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LM240WU3
Liquid Crystal Display
Product Specification
1. General Description
LM240WU3-TLD1 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system without inverter. 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 24.06 inch
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 colors. It has been designed to apply the 6Bit+A_FRC 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)
V
(+5V)
LCD
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(30pin)
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General Features
CN1
V
Lamp
Timing Control
Block
Power Circuit Block
2pin x6CNs (High)
24.06 inches(61.13cm) diagonalActive Screen Size
546.4(H) x 352.0(V) x 35.7(D) mm(Typ.) * without inverterOutline Dimension
0.270 mm x 0.270 mmPixel Pitch
Source Driver Circuit
Gate Driver circuit
G1
(1920 × 1200 pixels)
G1200
Back light Assembly
(Direct Light Type_U-
Shape_6CCFL)
S1920S1
TFT-LCD Panel
1920 horiz. By 1200 vert. Pixels RGB stripes arrangementPixel Format
16.7M colorsColor Depth
400 cd/m
View Angle Free (R/L 170(Typ.), U/D 160(Typ.))Viewing Angle(CR>10)
Total 67.30 Watt (Typ.) ( 4.3 Watt @VLCD, 63Watt @[Lamp=6.0mA])Power Consumption
2480 g(typ.)Weight
Transmissive mode, normally whiteDisplay Operating Mode
Hard coating(3H), Anti-Glare treatment of the front polarizerSurface Treatment
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2
(Center 1 point)Luminance, White
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LM240WU3
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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ڲۀۏٻڝېۇڽ
گۀۈۋۀۍڼۏېۍۀٻڶڞڸ
ڌڋ
ڋ
Symbol
ڐڋ
ڏڋ
ڎڋ
ڍڋ
Values
MaxMin
500TOP
60-20TST
ڔڋڀ
ڑڋ
ڑڋڀ
ڏڋڀ
ڣېۈۄڿۄۏ۔ٻڶڃڀڄڭڣڸ
ڌڋڀ
Units
Vdc+5.5-0.3VLCD
¶C
¶C
%RH9010HOP
%RH9010HST
at 25 ± 2¶C
1
ڮۏۊۍڼۂۀ
ڪۋۀۍڼۏۄۊۉ
ڌڋ ڍڋ ڎڋ ڏڋ ڐڋ ڑڋ ڒڋ ړڋڋڈڍڋ
ڟۍ۔ٻڝېۇڽٻگۀۈۋۀۍڼۏېۍۀٻڶڞڸ
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LM240WU3
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
MODULE :
Differential Impedance
ILCDPower Supply Input Current
Power Consumption
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Note :
1. Permissive power ripple should be measured under VCC=5.0V, 25¶C, fV(frame frequency)=MAX
condition and At that time, we recommend the bandwidth configuration of oscilloscope is to be under
20Mhz. See the next page.
-Pc TYP
-Pc MAX
Values
MaxTypMin
Vdc5.55.04.5VLCDPower Supply Input Voltage
Ohm11010090Zm
``W_]W^ZW
XY_WXXXW`[W
\U[\[UZW
]U[W\U\\
NotesUnit
1mVp-p200VdRFPermissive Power Input Ripple
2mA
3mA
2Watt
3Watt
3A3.0--IRUSHRush current
2. The specified current and power consumption are under the V
whereas Mosaic and max power pattern shown in the [ Figure 3 ] is displayed.
3. The current is specified at the maximum current pattern.
4. Maximum Condition of Inrush current :
The duration of rush current is about 2ms and rising time of Input Voltage is 1ms(min.).
At any rising time of Input voltage, Keep the I2T Value by below Condition
Condition : I2T < 32*2ms
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=12.0V, 25 ± 2¶C,fV=60Hz condition
LCD
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Liquid Crystal Display
Product Specification
• Permissive Power input ripple (VCC=5.0V, 25¶C, fV(frame frequency)=MAX condition)
LM240WU3
White pattern
• Power consumption (VCC=5.0V, 25¶C, fV (frame frequency=60Hz condition)
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Typical power Pattern
[ Figure 3 ] Mosaic pattern & Black Pattern for power consumption measurement
Black pattern
Max power Pattern
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Product Specification
Table 2_2. ELECTRICAL CHARACTERISTICS
LM240WU3
Liquid Crystal Display
Parameter Symbol
LAMP :
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 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
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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.
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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Values
MaxTypMin
1950(3.0mA)1750(6.0mA)1550(8.0mA)VBLOperating Voltage
8.06.03.0IBLOperating Current
2500--
2900--
RMS
RMS
V
RMS
V
RMS
NotesUnit
1, 2V
1mA
1, 3VsEstablished Starting Voltage
4kHz804840fBL
1, 5Min3.0Ts
6Watt74.46335.1PBL
1, 7Hrs40,000
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%.
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 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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LM240WU3
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 p(or I –p) / I
rms
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Product Specification
3-2. Interface Connections
- LCD Connector(CN1): 187024-30091, (Manufactured by P-TWO ) or
GT103-30S-H23 (Manufactured by LS Cable )
- Mating Connector : FI-X30C2L (Manufactured by JAE) or Equivalent
Table 3 MODULE CONNECTOR(CN1) PIN CONFIGURATION
LM240WU3
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
΄ΪΞΓΠΝ ͵ΖΤΔΣΚΡΥΚΠΟ
FR0M
FR0P
FR1M
FR1P
FR2M
FR2P
GND
FCLKINM
FCLKINP
FR3M
FR3P
SR0M
SR0P
GND
SR1M
SR1P
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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
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 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 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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Product Specification
User Connector Diagram
Rear view of LCM
#1 #30
187024-30091 / GT103-30S-H23
#1 #30
LM240WU3
Liquid Crystal Display
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