LG LM-201U04-A3 Service manual
( ) Preliminary Specification
( ? ) Final Specification
Title 20.1” UXGA TFT LCD
LM201U04
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
BUYER
MODEL
SIGNATURE DATE
/
/
/
SUPPLIER LG.Philips LCD CO., Ltd.
*MODEL LM201U04
SUFFIX A3
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY DATE
S.W. Lee / G.Manager
REVIEWED BY
J.T. Eu / Manager
PREPARED BY
D.I.Chung / A . Engineer
Please return 1 copy for your confirmation with
your signature and comments.
Ver 0.6 June . 05 . 2003
Product Engineering Dept.
LG. Philips LCD Co., Ltd
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LM201U04
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 8
3-3 SIGNAL TIMING SPECIFICATIONS 10
3-4 SIGNAL TIMING WAVE FORMS 11
3-5 COLOR INPUT DATA REFERANCE 12
3-6 POWER SEQUENCE 13
4 OPTICAL SPECIFICATIONS 14
5 MECHANICAL CHARACTERISTICS 18
6 RELIABILITY 21
7 INTERNATIONAL STANDARDS 22
7-1 SAFETY 22
7-2 EMC 22
8 PACKING 23
8-1 DESIGNATION OF LOT MARK 23
8-2 PACKING FORM 23
9 PRECAUTIONS 24
10 OTHERS -
APPENDIX 1. REQUIRED SIGNAL ASSIGNMENT FOR FLATLink Transmitter 26
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RECORD OF REVISIONS
Revision No DescriptionDate Page
1.0 Final specificationJune. 05. 2003
LM201U04
Liquid Crystal Display
Product Specification
Ver 0.6 June . 05 . 2003
3 / 26
LM201U04
Liquid Crystal Display
Product Specification
1. General Description
The LM201U04-A3 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 20.1 inch diagonally
measured active display area with UXGA resolution(1200 vertical by 1600 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 16,777,216 colors.
The LM201U04-A3 has been designed to apply the interface method that enables low power, high speed,low
EMI. FPD Link must be used as a LVDS(Low Voltage Differential Signaling) chip.
The LM201U04-A3 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 LM201U04-A3 characteristics provide an excellent flat panel display for office automation products such as
monitors.
G1
Gate Driver Circuit
LVDS
CN1
(30pin)
pair #1
LVDS
pair #2
Timing Controller
& LVDS 1 Chip
TFT - LCD Panel
(1600 × RGB × 1200 pixels)
G1200
+18V
Vcc
Power Circuit
Block
RGB
CN1(4pin),CN2(2pin))
S1 S1600
Source Driver Circuit
Back light Assembly (6CCFL)
CN3(2pin),CN4(4pin)
General Features
Active screen size 20.1 inches (510.54mm) diagonal
Outline Dimension 432.0(H) x 331.5(V) x 25.0(D) mm(Typ.)
Pixel Pitch 0.255 mm x 0.255 mm
Pixel Format 1600 horizontal By 1200 vertical Pixels RGB stripe arrangement
Color depth 8-bits, 16,777,216 colors
Luminance, white 250 cd/m2(Typ. Center 1 point)
Power Consumption
Weight 3200g (Typ.)
Display operating mode Transmissive mode, normally black
Total 35.1 Watt(Typ.), (4.5Watt @Vcc, 30.6 Watt @250cd/? [Lamp=7.5mA])
Surface treatments Hard coating (3H), Anti-glare treatment of the front polarizer
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LM201U04
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 NotesSymbol
Units
Min. Max.
Values
Power Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity
V
CC
T
OP
T
ST
H
OP
H
ST
- 0.3
0
- 20
10
10
+ 21
+ 50
+ 60
+ 90
+ 90
V
dc
?
?
%RH
%RH
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.
at 25?
1
1
1
1
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Liquid Crystal Display
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
The LM201U04-A3 requires two power inputs. One is employed to power the LCD electronics and to
drive the TFT array and liquid crystal. The second input which powers the CCFL, is typically generated
by an inverter. The inverter is an external unit to the LCD.
Table 2. ELECTRICAL CHARACTERISTICS
Values
Parameter
MODULE:
Power Supply Input Voltage
Power Supply Input Current
Power Consumption
Differential Impedance
Rush Current
Symbol
V
AA
I
AA
P
c
Zm
I
Rush
Min.
17V
Typ. Max.
18V
0.25
4.5
19V
0.35
6.3
100
3
Vdc
A
W
Ohm
A
LM201U04
NotesUnits
1
1
2
3
LAMP (each CCFL)
Operating voltage
Operating Current
Established Starting Voltage
at 25?
at 0?
Operating Frequency
Power Consumption (6 CCFL’s)
Discharge Stabilization Time
Life time
V
I
BL
Vs
F
P
Ts
BL
BL
BL
650(8mA)
3.0
-
-
40
-
-
40000
680
7.5
-
-
50
30.6
-
-
815(3mA)
8.0
1250
1550
60
33.7
3
-
V
RMS
mA
V
RMS
V
RMS
KHz
Watts
Minutes
Hours
4
5
6
7
8
9
Notes :1. The specified current and power consumption are under the VCC=18.0V, 25°C, fV=60Hz condition,
Typical supply current is measured at the condition of 8 X 6 chess pattern(white & black)
2. This impedance value is for impedance matching between LVDS TXand
the mating connector of the LCD.
3. The duration of rush current is about 1ms.
4. Operating voltage is measured at 25°C. The variance of the voltage is ±10%.
5. The output voltage at the transformer in the inverter must be high considering to the loss of the
ballast capacitor in the inverter. The voltage above VSshould be applied to the lamps for more
than 1 second for start-up. Otherwise, the lamps may not be turned on.
6. 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.
7. The lamp power consumption shown above does not include loss of external inverter at 25°C.
The used lamp current is the lamp typical current.
8. 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%.
The used lamp current is the lamp typical current.
9. The life time is defined as the time at which brightness of lamp is 50% compare to that of initial
value at the typical lamp current on condition of continuous operating at 25?2?C.
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Liquid Crystal Display
Product Specification
Note. Do not attach a conducting tape to 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.
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.
Requirements for a system inverter design, which is intended to have a better display performance, a
better power efficiency and a more reliable lamp.
It shall help increase the lamp lifetime and reduce its leakage current.
a. The asymmetry rate of the inverter current and voltage waveform should be 10% below;
b. The distortion rate of the current and voltage waveform should be within v2 ±10%;
c. The ideal sine current and voltage waveform shall be symmetric in positive and negative polarities.
LM201U04
I p
I -p
* Asymmetry rate = | I p– I –p| / I
* Distortion rate = I p(or I –p) / I
rms
rms
* 100%
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LM201U04
Liquid Crystal Display
Product Specification
3-2. Interface Connections
Interface chip must be used LVDS, part No. DS90CF383MTD(Transmitter) made by National Semiconductor.
Or used the compatible interface chips(TI:SN75LVDS83).
This LCD employs seven interface connections, a 30-pin connector is used for the module electronics interface.
Six 2-pin connectors are used for the integral back-light system.
The electronics interface connector is a model FI-XB30SRL-HF11 manufactured by JAE or used the connector
MDF76RAW-30S-1H manufactured by HIROSE
The mating connector part number FI-X30M(JAE) or equivalent.
The pin configuration for the connector is shown in the table 3.
Table 3. MODULE CONNECTOR PIN CONFIGURATION(LVDS)
Pin DescriptionSymbol
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
Vcc
Vcc
Vcc
Vcc
GND
GND
SR3P
SR3M
SCLKINP
SCLKINM
SR2P
SR2M
SR1P
SR1M
SR0P
SR0M
GND
GND
FR3P
FR3M
FCLKINP
FCLKINM
FR2P
FR2M
FR1P
FR1M
FR0P
FR0M
GND
GND
Supply voltage for LCD module
Supply voltage for LCD module
Supply voltage for LCD module
Supply voltage for LCD module
Ground
Ground
Plus signal of even channel 3 (LVDS)
Minus signal of even channel 3 (LVDS)
Plus signal of even clock channel (LVDS)
Minus signal of even clock channel (LVDS)
Plus signal of even channel 2 (LVDS)
Minus signal of even channel 2 (LVDS)
Plus signal of even channel 1 (LVDS)
Minus signal of even channel 1 (LVDS)
Plus signal of even channel 0 (LVDS)
Minus signal of even channel 0 (LVDS)
Ground
Ground
Plus signal of odd channel 3 (LVDS)
Minus signal of odd channel 3 (LVDS)
Plus signal of odd clock channel (LVDS)
Minus signal of odd clock channel (LVDS)
Plus signal of odd channel 2 (LVDS)
Minus signal of odd channel 2 (LVDS)
Plus signal of odd channel 1 (LVDS)
Minus signal of odd channel 1 (LVDS)
Plus signal of odd channel 0 (LVDS)
Minus signal of odd channel 0 (LVDS)
Ground
Ground
Second data
First data
Connector pin arrangement
P/N, Maker :
FI-XB30SRL-HF11, JAE
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