LG LM-190WX1-TLL1 Service manual
SPECIFICATION
( ) Preliminary Specification
(◆) Final Specification
LM190WX1
Liquid Crystal Display
Product Specification
FOR
APPROVAL
19.0” WXGA+ TFT LCDTitle
BUYER
MODEL
www.jxlcd.com
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SIGNATURE DATE
/
/
/
Philips
SUPPLIER LG Display CO., Ltd.
*MODEL LM190WX1
SUFFIX TLL1
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
J.H. Park / G.Manager
REVIEWED BY
H.S. Kim / Manager [C]
S.Y. An / Manager [M]
J.H. Park / Manager [P]
PREPARED BY
J.H. Ji / Engineer
DATE
Please return 1 copy for your confirmation
With your signature and comments.
Ver. 1.1 Jul. 16, 2009
Product Engineering Dept.
LG Display Co., Ltd
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Product Specification
Contents
LM190WX1
Liquid Crystal Display
No
ITEM
COVER
CONTENTS
RECORD OF REVISIONS
GENERAL DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL SPECIFICATIONS
1)
2)
4)
5)
6)
7)
8)
ELECTRICAL CHARACTERISTICS
INTERFACE CONNECTIONS
SIGNAL TIMING SPECIFICATIONS
SIGNAL TIMING WAVEFORMS
COLOR INPUT DATA REFERNECE
POWER SEQUENCE
POWER DIP CONDITION
OPTICAL SFECIFICATIONS
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MECHANICAL CHARACTERISTICS
Page
1
2
3
41
52
63
6
9
12LVDS INPUT CHARACTERISTICS3)
15
16
17
18
19
204
245
RELIABILITY
INTERNATIONAL STANDARDS
1)
2)
1)
2)
Ver. 1.1 Jul. 16, 2009
SAFETY
EMC
PACKING
DESIGNATION OF LOT MARK
PACKING FORM
276
287
28
28
298
29
29
30PRECAUTIONS9
30MOUNTING PRECAUTIONS1)
30OPERATING PRECAUTIONS2)
31ELECTROSTATIC DISCHARGE CONTROL3)
31PRECAUTIONS FOR STRONG LIGHT EXPOSURE4)
31STROAGE5)
31HANDLING PRECAUTIONS FOR PROTECTION FILM6)
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Product Specification
Record of Revisions
First Draft, Preliminary Specifications.Mar. 13, 2009Ver 0.0
LM190WX1
Liquid Crystal Display
DescriptionPageDateRevision No
4, 6
Jun. 11. 2009Ver 1.0
4, 24
Jul. 16, 2009Ver 1.1
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26
Updated Power Consumption (P
Updated Color Coordinates20
Changed Weight : Typ. 1600g1670g
Max. 1680g1760g
Final Specifications.
Changed the Wire Tape Angle.
Typ. 4.2W)
LCD
Ver. 1.1 Jul. 16, 2009
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LM190WX1
Liquid Crystal Display
Product Specification
1. General Description
LM190WX1-TLL1 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 19.0 inch diagonally measured active
display area with WXGA+ resolution (900 vertical by 1440 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 subpixel 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 LM190WX1-TLL1 characteristics provide an excellent flat panel display for office automation
products such as monitors.
FIG. 1 Block Diagram
LVDS
pair #1
CN1
(30pin)
LVDS
pair #2
+5V
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VLCD
Timing Controller
＆LVDS 1 Chip
Power Circuit
Block
VLamp
VLamp
RGB
CN2 (2pin)
CN3 (2pin)
Source Driver Circuit
S1 S1440
G1
TFT - LCD Panel
(1440 × RGB × 900 pixels)
G900
Back light Assembly (2CCFL)
General Features
Active screen size 18.95 inches (481.33mm) diagonal (Aspect ratio 16:10)
Outline Dimension 428.0(H) x 278.0(V) x 14.5(D) mm(Typ.)
Pixel Pitch 0.2835(H)mm x 0.2835(V)mm
Pixel Format 1440 horizontal By 900 vertical Pixels. RGB stripe arrangement
Interface LVDS 2Port
Color depth 16.7M colors
Luminance, white 250 cd/m2 ( Center 1Point, Typ.)
Viewing Angle (CR>10) R/L 170(Typ.), U/D 160(Typ.)
Power Consumption
Weight 1,670g(Typ.)
Display operating mode Transmissive mode, normally White
Surface treatments Hard coating (3H), Anti-glare treatment of the front polarizer
Ver. 1.1 Jul. 16, 2009
Total 15.0 Watt(Typ.), (4.2 W@V
, 10.8 W@[Lamp=7.5mA])
LCD
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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
LM190WX1
Parameter Notes
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.
FIG. 2 Temperature and Relative Humidity
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Wet Bulb
Temperature [C]
20
10
0
Symbol
LCD
OP
ST
OP
ST
60
50
40
30
Values
90%
+6.0-0.3V
60%
40%
10%
MaxMin
Hu
mi
dit
y
[(
%
)R
H]
Units
DC
°C500T
°C60-20T
%RH9010H
%RH9010H
Storage
Operation
At 25℃V
1
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [C]
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LM190WX1
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/Backlight, is typically
generated by an inverter. The inverter is an external unit to the LCDs.
Table 2. Electrical Characteristics
Parameter Symbol
MODULE :
Power Supply Input Voltage
Permissive Power Input Ripple
Power Supply Input Current
Power Consumption
Inrush current
Note :
1. The specified current and power consumption are under the VLCD=5.0V, 25 2°C, f
condition whereas mosaic pattern(8 x 6) is displayed and fV is the frame frequency.
2. The current is specified at the maximum current pattern.
3. Permissive power ripple should be measured under VCC=5.0V, 25°C, fV=75Hz condition
and At that time, we recommend the bandwidth configuration of oscilloscope is to be
under 20MHz.
4. The duration of rush current is about 2ms and rising time of power Input is 500us 20%.
FIG.3 Pattern for Electrical Characteristics
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LCD
LCD
LCD-MOSAIC
I
LCD-BLACK
LCD
RUSH
Values
MaxTypMin
5.55.04.5V
V
DC
NotesUnit
3V0.2--V
1mA966840714I
2mA1081940799
1Watt4.834.2-P
4A3--I
=60Hz
V
Power Consumption Measurement
White : 255Gray
Black : 0Gray
Mosaic Pattern(8 x 6)
Ver. 1.1 Jul. 16, 2009
Power Input Ripple
Full Black Pattern
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Product Specification
Table 3. Electrical Characteristics
LM190WX1
Liquid Crystal Display
Parameter Symbol
LAMP :
Operating Voltage
Operating Current
at 25 °C
at 0 °C
Operating Frequency
Discharge Stabilization Time
Power Consumption
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.
※ 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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V
BL
BL
BL
S
BL
Values
853(3.0m)720(7.5mA)705(8.0mA)
MaxTypMin
8.07.53.0I
1250
1550
NotesUnit
RMS
RMS
V
RMS
V
RMS
1, 2V
1mA
1, 3Vs Established Starting Voltage
4kHz80-40f
1, 5Min3--T
6Watt11.8810.8P
1, 7Hrs-50,000 Life Time
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 VS should 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%.
TS is 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 = VBL x IBL x 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.
Ver. 1.1 Jul. 16, 2009
Lamp
)
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Liquid Crystal Display
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
x 100%
rms
LM190WX1
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) : GT103-30S-H23 (LSM), IS100-L30B-C23 (UJU)
Mating connector : FI-X30H and FI-X30HL (JAE) or Equivalent
Table 4. Module Connector(CN1) Pin Configuration
LM190WX1
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
RXO0 RXO0+
RXO1 RXO1+
RXO2 RXO2+
GND
RXOC RXOC+
RXO3 RXO3+
RXE0-
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RXE0+
GND
RXE1 RXE1+
GND
RXE2 RXE2+
RXEC RXEC+
RXE3 RXE3+
GND
NC
NC
PWM_OUT
VLCD
VLCD
VLCD
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)
Ground
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)
Minus signal of 2nd clock channel (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)
First Pixel data
Second Pixel data
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FIG. 4 Connector Diagram
#1 #30
1’st signal pairs
LM190WX1
Liquid Crystal Display
Product Specification
GT103-30S-H23 (LSM)
2’nd signal pairs
Power(+5V)
PWM_OUT
#1 #30
Rear View of LCM
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. 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.
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(power input) pins should be connected together.
LCD
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