LG LP-141WX1-TLA5 Service manual
LP141WX1
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Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
)
(
(
Preliminary Specification
)
Final Specification
Title 14.1” WXGA TFT LCD
Customer HP
MODEL
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SIGNATURE
/
/
/
DATE
SUPPLIER LG.Philips LCD Co., Ltd.
*MODEL LP141WX1
Suffix TLA5
*When you obtain standard approval,
please use the above model name without suffix
S.C. Yun / G.Manager
REVIEWED BY
S.Y. Kim / Manager
PREPARED BY
D.G. Choi / Engineer
DATESIGNATURE
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0 Mar. 09, 2007
Products Engineering Dept.
LG. Philips LCD Co., Ltd
1/ 27
Product Specification
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Contents
LP141WX1
Liquid Crystal Display
No ITEM
COVER
CONTENTS
RECORD OF REVISIONS
1 GENERAL DESCRIPTION
2 ABSOLUTE MAXIMUM RATINGS
3 ELECTRICAL SPECIFICATIONS
3-1 ELECTRICAL CHARACTREISTICS
3-2 INTERFACE CONNECTIONS
3-3 SIGNAL TIMING SPECIFICATIONS
3-4 SIGNAL TIMING WAVEFORMS
3-5 COLOR INPUT DATA REFERNECE
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3-6 POWER SEQUENCE
4 OPTICAL SFECIFICATIONS
5 MECHANICAL CHARACTERISTICS
Page
1
2
3
4
5
6
7
9
9
10
11
12
16
6 RELIABLITY
7 INTERNATIONAL STANDARDS
7-1 SAFETY
7-2 EMC
8 PACKING
8-1 DESIGNATION OF LOT MARK
8-2 PACKING FORM
9 PRECAUTIONS
A APPENDIX. Enhanced Extended Display Identification Data
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RECORD OF REVISIONS
LP141WX1
Liquid Crystal Display
Revision No
1.0 Mar. 09, 2007 - First Draft and Final CAS V0.0
Revision
Date
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Page Description
EDID
ver
Ver. 1.0 Mar. 09, 2007
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LP141WX1
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Liquid Crystal Display
Product Specification
1. General Description
The LP141WX1 is a Color Active Matrix Liquid Crys tal Display with an integral Cold Cathode Fluo rescent
Lamp (CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the ac tive element. It is a
transmissive type display operating in the normally white mode. This TFT-LCD has 14.1 inches diagonally
measured active display area with WXGA resolution(800 vertical by 1280 horizontal pixe l array). Each pixel
is divided into Red, Green and Blue sub-pixels or dots wh ich are arranged in vertica l stripes. Gray scale or
the brightness of the sub-pixel color is determined with a 6-bit gray scale signal for each dot, thus,
presenting a palette of more than 262,144 colors.
The LP141WX1 has been designed to apply the interface me thod that enables low power, high speed, low
EMI.
The LP141WX1 is intended to support applications where thin thickness , low power are critica l factor s and
graphic displays are important. In combination with the vertical arrangement of the sub-pixels, the
LP141WX1 characteristics prov ide an excellent flat display for office automa t ion products such as Notebook
PC.
CN1 User Connector 30 Pin
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CN
Control & Data Power EDID signal & Power
LVDS &
Timing
Control
Block
POWER
BLOCK
EDID
BLOCK
(LOG_B type)
1
Gate Driver
800
Source Driver Circuit
1 1280
TFT-LCD Panel
(1280 x RGB x 800)
Backlight Ass’y
General Features
Active Screen Size 14.1 inches diagonal
Outline Dimension 319.5 (H, typ) × 205.5(V, typ) × 5.3(D, max) [mm]
Pixel Pitch 0.2373 mm × 0.2373 mm
Pixel Format 1280 horiz. By 800 vert. Pixels RGB strip arrangement
Color Depth 6-bit, 262,144 colors
2
Luminance, White 200 cd/m
Power Consumption Total 5.38 Watt(Typ.) @ LCM circuit 1.28Watt(Typ.), B/L input 4.1Watt(Typ.)
Weight 400 g (Max.), 390g(Typ.)
Display Operating Mode Transmissive mode, normally white
Surface Treatment Anti-glare treatment of the front polarizer
RoHS Comply Yes
(Typ.5 point)
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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
Parameter
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
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Wet Bulb
Temperature [℃]
20
10
0
VCC -0.3 4.0 Vdc at 25 ± 5°C
TOP 050°C1
HST -20 60 °C1
HOP 10 90 %RH 1
HST 10 90 %RH 1
°C Max, and no condensation of water.
50
40
30
Values
Min Max
90% 80%
60
Units
60%
Humidity[(%)RH]
Storage
40%
Operation
20%
10%
NotesSymbol
-20
Ver. 1.0 Mar. 09, 2007
10
20 30 40 50
Dry Bulb Temperature [℃]
60 70 800
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Liquid Crystal Display
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
The LP141WX1 requires two power inputs. One is employed to power the LCD electronic s 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 t h e L CD.
Table 2. ELECTRICAL CHARACTERISTICS
Parameter Symbol
MODULE :
Power Supply Input Voltage VCC 3.0 3.3 3.6 V
Power Supply Input Current I
Power Consumption Pc Differential Impedance
LAMP :
Operating Voltage V
Operating Current I
Power Consumption P
Operating Frequency f
Discharge Stabilization Time Ts - - 3 Min 4
Life Time 15,000 - - Hrs 5
Established Starting Voltage
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at 25℃
at 0 ℃
CC
Zm
BL
BL
BL
BL
Vs 1180
Min Typ Max
-390445
90 100 110
640(7.0mA) 675(6.0mA) 880(2.0mA) V
2.0 6.0 7.0 mA
-
50 65 80 kHz
Values
1.28 1.47
4.1 4.5
1415
Unit Notes
DC
Ma 1
Watt 1
Ohm 2
RMS
RMS
V
RMS
V
RMS
3
Note)
1. The specified current and power consumption are under the Vcc = 3.3V , 25℃, fv = 60Hz condition
whereas full black pattern is displayed and fv is the frame frequency.
2. This impedance value is needed to proper display and measured form LVDS Tx to the mating connector.
3. The typical operating current is for the typical surface luminance (L
) in optical characteristics.
WH
4. 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%.
5. The life time is determined as the time at which brightness of lamp is 50% compare to that of initial value
at the typical lamp current.
6. The output of the inverter must have symmetrical(negative and positive) voltage waveform and
symmetrical current waveform.(Asymmetrical ratio is less than 10%) Please do not use the inverter
which has asymmetrical voltage and asymmetrical current and spike wave.
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. It is defined the brightness of the lamp after being lighted for 5 minutes as 100%.
T
is the time required for the brightness of the center of the lamp to be not less than 95%.
S
8. The lamp power consumption shown above does not include loss of external inverter.
The applied lamp current is a typical one.
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Product Specification
Note)
9. 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
* 100%
I -p
※ 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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* Distortion rate
I
(or I –p) / I
p
rms
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Product Specification
3-2. Interface Connections
This LCD employs two interface connections, a 30 pin connector is used for the module electronics interface
and the other connector is used for the integral backlight system.
The electronics interface connector is a model GT101-30S-HR11 manufactured by LGC.
Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)
Pin Symbol Description Notes
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
GND Ground
VCC Power Supply, 3.3V Typ.
VCC Power Supply, 3.3V Typ.
V EEDID DDC 3.3V power
NC Reserved for supplier test point
Clk EEDID DDC Clock
DATA EEDID DDC Data
R
0- Negative LVDS differential data input
IN
R
0+ Positive LVDS differential data input
IN
GND Ground
R
1- Negative LVDS differential data input
IN
R
1+ Positive LVDS differential data input
IN
GND Ground
2- Negative LVDS differential data input
R
IN
2+ Positive LVDS differential data input
R
IN
GND Ground
CLKIN- Negative LVDS differential clock input
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CLKIN+ Positive LVDS differential clock input
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GND Ground
NC No Connect
NC No Connect
GND Ground
NC No Connect
NC No Connect
GND Ground
NC No Connect
NC No Connect
GND Ground
NC No Connect
NC No Connect
1, Interface chips
1.1 LCD : THINE,
KE5M5U2518CFP (LCD Controller)
including LVDS Receiver
(LVDSRX_SPI_UMOD )
1.2 System : HP Caymus or equivalent
* Pin to Pin compatible with LVDS
2. Connector
2.1 LCD : GT101-30S-HR11, LGC or
its compatibles
2.2 Mating : FI-X30M or equivalent.
2.3 Connector pin arrangement
30
[LCD Module Rear View]
1
The backlight interface connector is a model BHSR-02VS-1, manufactured by JST or Compatible.
The mating connector part number is SM02B-BHSS-1 or equivalent.
Table 5. BACKLIGHT CONNECTOR PIN CONFIGURATION (J3)
Pin Symbol Description Notes
1 HV Power supply for lamp (High voltage side) 1
2 LV Power supply for lamp (Low voltage side) 1
Notes : 1. The high voltage side terminal is colored Pink and the low voltage side terminal is Green.
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Product Specification
3-3. Signal Timing Specifications
This is the signal timing required at the input of the User connector. All of the interface signal timing should be
satisfied with the following specifications and specifications of LVDS Tx/Rx for its proper operation.
Table 6. TIMING TABLE
ITEM Symbol Min Typ Max Unit Note
DCLK Frequency f
Hsync
Vsync
Data
Enable
3-4. Signal Timing Waveforms
Period Thp
Width t
Width-Active t
Period t
Width t
Width-Active t
Horizontal back porch t
Horizontal front porch t
Vertical back porch t
Vertical front porch t
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Data Enable, Hsync, Vsy n c
DCLK
tCLK
0.5 Vcc
CLK
WH
WHA
VP
WV
WVA
HBP
HFP
VBP
VFP
High: 0.7VCC
Low: 0.3VCC
66.4 69.3 75.3
1368 1405 1480
16 32 48
1280 1280 1280
809 822 848
26 8
800 800 800
40 45 90
32 48 62
51336
23 4
MHz
tCLK
tHP
tCLK
tHP
Condition : VCC =3.3V
t
Hsync
t
WH
t
HBP
HP
tWHA
Data Enable
t
VP
t
WV
Vsync
t
VBP
tWVA
Data Enable
Ver. 1.0 Mar. 09, 2007
t
HFP
t
VFP
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