LG LM-190E05-SL02 Service manual
( ) Preliminary Specification
(◆◆◆◆ ) Final Specification
Title 19.0” SXGA TFT LCD
LM190E05
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
BUYER
MODEL
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SIGNATURE DATE
/
/
/
SUPPLIER LG.Philips LCD Co., Ltd.
*MODEL LM190E05
SUFFIX SL02
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY DATE
/
REVIEWED BY
/
PREPARED BY
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver 1.0 Oct. 02, 2006
Product Engineering Dept.
LG. Philips LCD Co., Ltd
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LM190E05
Liquid Crystal Display
Product Specification
CONTENTS
NO. ITEM Page
- COVER 1
- CONTENTS 2
- RECORD OF REVISIONS 3
1 GENERAL DESCRIPTION 4
2 ABSOLUTE MAXIMUM RATINGS 5
3 ELECTRICAL SPECIFICATIONS 6
3-1 ELECTRICAL CHARACTERISTICS 6
3-2 INTERFACE CONNECTIONS 9
3-3 SIGNAL TIMING SPECIFICATIONS 13
3-4 SIGNAL TIMING WAVEFORMS 14
3-5 COLOR INPUT DATA REFERANCE 15
3-6 POWER SEQUENCE 16
4 OPTICAL SPECIFICATIONS 17
5 MECHANICAL CHARACTERISTICS 22
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6 RELIABILITY 25
7 INTERNATIONAL STANDARDS 26
7-1 SAFETY 26
7-2 EMC 26
8 PACKING 27
8-1 DESIGNATION OF LOT MARK 27
8-2 PACKING FORM 27
9 PRECAUTIONS 28
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RECORD OF REVISIONS
Revision No DescriptionDate Page
LM190E05
Liquid Crystal Display
Product Specification
Ver 0.0
Ver 1.0
Mar. 29. 2005
Oct.02.2006
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Preliminary Specifications
Final Specifications
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LM190E05
Liquid Crystal Display
Product Specification
1. General Description
The LM190E05-SL02 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 black mode. This TFT-LCD has a 19.0 inch diagonal
measured active display area with SXGA resolution(1024 vertical by 1280 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.
The LM190E05-SL02 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.
The LM190E05-SL02 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 LM190E05-SL02 characteristics provide an excellent flat panel display for office automation products such as
monitors.
RGB
Source Driver Circuit
S1 S1280
TFT - LCD Panel
(1280 × RGB × 1024 pixels)
CN1
(30pin)
LVDS
pair #1
LVDS
pair #2
Timing Controller
＆＆＆＆LVDS 1 Chip
Gate Driver Circuit
G1
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+12V
VLCD
Power Circuit
Block
CN2(5pin), CN3
(2pin)
CN5(5pin), CN4
(2pin)
Figure 1. Block diagram
G1024
Back light Assembly (6CCFL)
General Features
Active screen size 19.0 inch (481.84mm) diagonal
Outline Dimension 396.0(H) x 324.0(V) x 20.0(D) mm(Typ.)
Pixel Pitch 0.294 xRGB(H)mm x 0.294(V) mm
Pixel Format 1280 horiz. by 1024 vert. Pixels. RGB stripe arrangement
Display Colors 8bit (16.7M colors)
Luminance, white 280 cd/m2 (Typ. Center 1 point)
Viewing Angle (CR>10) Viewing Angle Free [ R/L 178(Typ.), U/D 178(Typ.) ]
Power Consumption Total 33.85 Watt(Typ.), (5.5 Watt @V
Weight 2,970 g (Typ.)
Display operating mode Transmissive mode, normally black
Surface treatments Hard coating (3H), Anti-glare treatment of the front polarizer
, 28.35Watt @[Lamp=7.0mA])
LCD
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LM190E05
Liquid Crystal Display
Product Specification
2. Absolute maximum ratings
The followings are maximum values which, if exceeded, may cause faulty operation or damage to the unit.
Table 1. Absolute Maximum Ratings
Parameter NotesSymbol
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.
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Wet Bulb
Temperature [C]
20
10
0
30
V
LCD
T
OP
T
ST
H
OP
H
ST
50
40
Values
Min. Max.
－0.3
0
－20
10
10
90%
60
＋14.0
＋50
＋60
＋90
＋90
60%
40%
10%
Units
V
dc
℃
℃
%RH
%RH
Operation
Humidity [(%)RH]
At 25℃
1
1
1
1
Storage
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [C]
Figure 2. Temperature and relative humidity
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LM190E05
Liquid Crystal Display
Product Specification
3. Electrical specifications
3-1. Electrical characteristics
The LM190E05-SL02 requires two power inputs. One is employed to power the LCD electronics and to
drive the TFT array and liquid crystal. Another which powers the CCFL, is typically generated by an inverter.
The inverter is an external unit to the LCD.
Table 2. Electrical CharacteristicsTable 2. Electrical Characteristics
Parameter Symbol
MODULE :
Power Supply Input Voltage
Power Supply Input Current
Differential Impedance
Power Consumption
Rush Current
Notes :
1. The specified current and power consumption are
under the VLCD=12.0V, 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. The duration of rush current is about 5ms and rising time of power Input is 500us ± 20%.
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V
LCD
I
LCD
I
LCD
Zm
P
LCD
I
RUSH
Min. Typ. Max.
10.8
-
-
90
-
-
Values
12.0
0.46
0.59
100
5.5
2.0
13.2
0.53
0.68
110
7.0
3.0
White : 255Gray
Black : 0Gray
Units Notes
V
A
A
ohm
Watts
A
1
2
1
3
[ Figure 3 ] Mosaic pattern (8X6) for power consumption measurement
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Product Specification
Table 3. Electrical Characteristics
LM190E05
Liquid Crystal Display
Parameter Symbol
LAMP for each CCFL:
Operating Voltage
Operating Current
Established Starting Voltage
at 25 °C
at 0 °C
Operating Frequency
Discharge Stabilization Time
Power Consumption
Life Time
Notes :
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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V
BL
I
BL
V
BS
f
BL
T
S
P
BL
Min. Typ. Max.
655
(@7.5mA)
3.0
-
-
40
-
-
45,000
Values
675
(@7.0mA)
7.0
-
-
60
-
28.35
-
790
(@3.0mA)
7.5
1100
1400
70
3
31.19
-
Units Notes
V
RMS
mA
RMS
V
RMS
V
RMS
kHz
Minutes
Watts
Hrs
1,2
1
1,3
4
1,5
6
1,7
※ 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%.
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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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%
LM190E05
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
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* Distortion rate
I p(or I –p) / I
rms
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LM190E05
Liquid Crystal Display
Product Specification
3-2. Interface Connections
Interface chip must be used LVDS, part No. SN75LVDS83 (Tx, Texas Instrument) 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 GT101-30S-H16 (LG Cable) or IN-30-BA 10 ( UJU Electronics) which is compatible.
And mating connector is FI-X30H (JAE) or compatible.
The pin configuration for the connector is shown in the table 4 and the signal mapping with LVDS transmitter
is shown in the table 5.
Table 4. Module connector pin configuration
Pin No Symbol
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
RxO0RxO0+
RxO1RxO1+
RxO2RxO2+
GND
RxOCRxOC+
RxO3-
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RxO3+
RxE0RxE0+
GND
RxE1RxE1+
GND
RxE2RxE2+
RxECRxEC+
RxE3RxE3+
GND
NC
NC
NC
VCC
VCC
VCC
Description
LVDS Signal of Odd Channel 0(-)
LVDS Signal of Odd Channel 0(+)
LVDS Signal of Odd Channel 1(-)
LVDS Signal of Odd Channel 1(+)
LVDS Signal of Odd Channel 2(-)
LVDS Signal of Odd Channel 2(+)
Ground
LVDS Signal of Odd Channel Clock(-)
LVDS Signal of Odd Channel Clock(+)
LVDS Signal of Odd Channel 3(-)
LVDS Signal of Odd Channel 3(+)
LVDS Signal of Even Channel 0(-)
LVDS Signal of Even Channel 0(+)
Ground
LVDS Signal of Even Channel 1(-)
LVDS Signal of Even Channel 1(+)
Ground
LVDS Signal of Even Channel 2(-)
LVDS Signal of Even Channel 2(+)
LVDS Signal of Even Channel Clock(-)
LVDS Signal of Even Channel Clock(+)
LVDS Signal of Even Channel 3(-)
LVDS Signal of Even Channel 3(+)
Ground
No connection
No connection
No connection
Power supply (12.0V Typ.)
Power supply (12.0V Typ.)
Power supply (12.0V Typ.)
First Pixel Data
Second Pixel Data
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