LG LP-154WX4-TLCA Service manual
Product Specification
SPECIFICATION
LP154WX4
Liquid Crystal Display
FOR
APPROVAL
)
(
(
Preliminary Specification
◆
)
Final Specification
MODEL
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15.4” WXGA TFT LCDTitle
GeneralCustomer
*When you obtain standard approval,
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please use the above model name without suffix
LG.Philips LCD Co., Ltd.SUPPLIER
LP154WX4*MODEL
TLCASuffix
SIGNATUREAPPROVED BY
/
/
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0 Mar. 12, 2008
APPROVED BY
S. C. Yun / S.Manager
REVIEWED BY
S. R. Kim / Manager
PREPARED BY
K. T. Moon / Engineer
Products Engineering Dept.
LG. Philips LCD Co., Ltd
SIGNATURE
1 / 31
Product Specification
Contents
LP154WX4
Liquid Crystal Display
ITEMNo
COVER
CONTENTS
RECORD OF REVISIONS
GENERAL DESCRIPTION1
ABSOLUTE MAXIMUM RATINGS2
ELECTRICAL SPECIFICATIONS3
ELECTRICAL CHARACTREISTICS 3-1
INTERFACE CONNECTIONS 3-2
LVDS SIGNAL TIMING SPECIFICATIONS 3-3
SIGNAL TIMING SPECIFICATIONS 3-4
SIGNAL TIMING WAVEFORMS 3-5
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COLOR INPUT DATA REFERNECE 3-6
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POWER SEQUENCE 3-7
OPTICAL SFECIFICATIONS4
Page
1
2
3
4
5
6
8
9
11
11
12
13
14
MECHANICAL CHARACTERISTICS5
RELIABLITY6
INTERNATIONAL STANDARDS7
SAFETY 7-1
EMC 7-2
PACKING8
DESIGNATION OF LOT MARK 8-1
PACKING FORM 8-2
PRECAUTIONS9
APPENDIX. Enhanced Extended Display Identification Data A
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Product Specification
RECORD OF REVISIONS
LP154WX4
Liquid Crystal Display
DescriptionPageRevision DateRevision No
First Draft (Preliminary Specification)AllJan. 04. 20080.0
Final DraftAllMar. 12. 20081.0
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EDID
ver
Ver. 1.0 Mar. 12, 2008
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LP154WX4
Liquid Crystal Display
Product Specification
1. General Description
The LP154WX4 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. This TFT-LCD has 15.4 inches diagonally
measured active display area with WXGA resolution(800 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 6-bit gray scale signal for each dot, thus, presenting
a palette of more than 262,144 colors.
The LP154WX4 has been designed to apply the interface method that enables low power, high speed, low
EMI.
The LP154WX4 is intended to support applications where thin thickness, low power are critical factors and
graphic displays are important. In combination with the vertical arrangement of the sub-pixels, the
LP154WX4 characteristics provide an excellent flat display for office automation products such as Notebook
PC.
CN1 User connector 30 Pin
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CN
General Features
LVDS &
Timing
Control
Block
POWE
R
BLOCK
EDID
BLOCK
Control & Data Power EDID signal & Power
15.4 inches diagonal Active Screen Size
344.0(H, typ) × 222.0(V, typ) × 6.5(D,Max.) [mm]Outline Dimension
0.25875mm × 0.25875 mmPixel Pitch
1280 horiz. By 800 vert. Pixels RGB strip arrangementPixel Format
6-bit, 262,144 colorsColor Depth
200 cd/m2(Typ.5 point)Luminance, White
Total 5.6 Watt(Typ.) @ LCM circuit 1.4 Watt (Typ.), B/L input 4.2Watt(Typ.)Power Consumption
575g (Max.)Weight
Transmissive mode, normally whiteDisplay Operating Mode
Glare treatment of the front polarizerSurface Treatment
YesRoHS Comply
1
GIP(Gate In Panel)
800
Source Driver Circuit
1
TFT-LCD Panel
(1280 x 800)
Backlight Ass’y
1280
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LP154WX4
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 39C Max, and no condensation of water.
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Wet Bulb
Temperature [℃]
20
10
0
Symbol
60
50
40
30
Values
MaxMin
90% 80%
60%
40%
20%
10%
Units
Humidity[(%)RH]
Storage
Operation
at 25 5CVdc4.0-0.3VCC
1C500TOP
1C60-20HST
1%RH9010HOP
1%RH9010HST
-20
Ver. 1.0 Mar. 12, 2008
10
20 30 40 50
Dry Bulb Temperature [℃]
60 70 800
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LP154WX4
Liquid Crystal Display
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
The LP154WX4 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
Parameter Symbol
MODULE :
Power Supply Input Current
LAMP :
Operating Voltage
Operating Current
Power Consumption
Operating Frequency
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Established Starting Voltage
at 25℃
at 0 ℃
I
CC
Vs
BL
BL
BL
BL
Values
DC
RMS
RMS
RMS
RMS
NotesUnit
1mA400350300
1Watt1.321.16-Pc Power Consumption
2Ohm11010090Zm Differential Impedance
3mA
4Min3--Ts Discharge Stabilization Time
5Hrs--12,000 Life Time
MaxTypMin
3.63.33.0VCC Power Supply Input Voltage
830(3.0mA)690(6.0mA)665(6.8mA)V
6.86.03.0I
4.64.2-P
1200
1500
V
V
kHz806045f
V
V
Note)
1. The specified current and power consumption are under the Vcc = 3.3V , 25℃, fv = 60Hz condition
whereas Mosaic 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 (LWH) in optical characteristics.
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.
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LP154WX4
Liquid Crystal Display
Product Specification
Note)
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%.
TS is the time required for the brightness of the center of the lamp to be not less than 95%.
8. The lamp power consumption shown above does not include loss of external inverter.
The applied lamp current is a typical one.
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
* 100%
rms
10. Inverter open voltage must be more than lamp voltage for more than 1 second for start-up.
Otherwise, the lamps may not be turned on.
※ 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.
Ex of current wave)
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Normal current wave - Standard
I -p
* Distortion rate
I p (or I –p) / I
Abnormal current wave - Bad
rms
Abnormal current wave - Bad
Ver. 1.0 Mar. 12, 2008
Abnormal current wave - Bad
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LP154WX4
Liquid Crystal Display
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 MDF76LBRW-30S-1H manufactured by Hirose.
Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)
NotesDescriptionSymbolPin
GroundGND1
Power Supply, 3.3V Typ.VCC2
Power Supply, 3.3V Typ.VCC3
DDC 3.3V powerV EEDID4
Reserved for supplier test pointNC5
DDC ClockClk EEDID6
DDC DataDATA EEDID7
Negative LVDS differential data inputRIN 0-8
Positive LVDS differential data inputRIN 0+9
GroundGND10
Negative LVDS differential data inputRIN 1- 11
Positive LVDS differential data inputRIN 1+12
GroundGND13
Negative LVDS differential data inputRIN 2-14
Positive LVDS differential data inputRIN 2+15
GroundGND16
Negative LVDS differential clock inputCLKIN-17
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NC No Connect21
Positive LVDS differential clock inputCLKIN+18
GroundGND19
No ConnectNC20
GroundGND22
No ConnectNC23
No ConnectNC24
GroundGND25
No ConnectNC26
No ConnectNC27
GroundGND28
No ConnectNC29
No ConnectNC30
1, Interface chips
1.1 LCD : SW, SW0611 (LCD Controller)
including LVDS Receiver
* Pin to Pin compatible with LVDS
2. Connector
2.1 LCD :MDF76LBRW-30S-1H,Hirose
FI-XB30SRL-HF11, JAE
equivalent Locking design
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-1or equivalent.
PIN1
PIN2PIN2
Table 4. BACKLIGHT CONNECTOR PIN CONFIGURATION (J3)
NotesDescriptionSymbolPin
1Power supply for lamp (High voltage side)HV1
1Power supply for lamp (Low voltage side)LV2
Notes : 1. The high voltage side terminal is colored Pink and the low voltage side terminal is White.
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Product Specification
LVDS +
LVDS -
0V
V
CM
# |VID| = |(LVDS +) – (LVDS -)|
# VCM= {(LVDS +) + ( LVDS -)}/2
|VID|
V
IN_MAXVIN_MIN
LVDS Data
t
SKEW
LVDS Clock
T
clk
t
SKEW (Fclk
= 1/T
clk
)
1) 85MHz > Fclk ≥ 65MHz : -400 ~ +400
2) 65MHz > Fclk ≥ 25MHz : -600 ~ +600
3-3. LVDS Signal Timing Specifications
3-3-1. DC Specification
LP154WX4
Liquid Crystal Display
Description
LVDS Common mode Voltage
LVDS Input Voltage Range
3-3-2. AC Specification
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LVDS Clock to Data Skew Margin
Symbo
l
CM
IN
SKEW
SKEW
NotesUnitMaxMin
-mV600100|VID|LVDS Differential Voltage
-V1.80.6V
-V2.10.3V
NotesUnitMaxMinSymbolDescription
ps+ 400 400-t
600-
ps+ 600t
85MHz > Fclk ≥
65MHz
65MHz > Fclk ≥
25MHz
LVDS Clock to Clock Skew Margin (Even
to Odd)
Maximum deviation
of input clock frequency during SSC
Maximum modulation frequency
of input clock during SSC
Ver. 1.0 Mar. 12, 2008
SKEW_EO
DEV
MOD
- 1/7
+ 1/7t
T
clk
%± 3-F
KHz200-F
-
-
-
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LVDS Even Data
LVDS Odd Clock
LVDS Even Clock
t
SKEW_EO
T
clk
T
clk
Freq.
F
max
F
center
F
min
Product Specification
< Clock skew margin between channel >
LP154WX4
Liquid Crystal Display
F
* F
center
DEV
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3-3-3. Data Format
1) LVDS 1 Port
RCLK+
RA+/-
RB+/-
RC+/-
RD+/-
R3 R2
G4 G3
B5 B4
G7 G6
R1 R0
G2 G1
B3 B2
R7 R6
1
F
MOD
< Spread Spectrum >
G0 R5 R4 R3 R2 R1 R0
B1 B0 G5 G4 G3 G2 G1
DE VSYNC HSYNC B5 B4 B3 B2
X B7 B6 G7 G6 R7 R6
Time
G0
B1
DE
VSYNC HSYNC
X
R5 R4
B0 G5
B7 B6
Ver. 1.0 Mar. 12, 2008
Previous (N-1)th Cycle Next(N+1)th Cycle
< LVDS Data Format >
Current (Nth) Cycle
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