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LM171WX3
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ) Final Specification
Title 17.1" WXGA+ TFT LCD
BUYER DELL SUPPLIER LG. Display Co., Ltd.
MODEL - *MODEL LM171WX3
SUFFIX TLC2
*When you obtain standard approval,
please use the above model name without suffix
SIGNATURE DATE APPROVED BY DATE
H.S. KIM / G.Manager
/
REVIEWED BY
C.K. LEE / Manager [C]
/ J. H. LEE / Manager [M]
Y.S. LEE / Manager [P]
PREPARED BY
/
Y.C. AHN / Engineer
Please return 1 copy for your confirmation Product Engineering Dept.
With your signature and comments. LG. Display Co., Ltd
Ver 1.2 Sept. 11, 2008 1 / 32
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LM171WX3
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 16
3-4 SIGNAL TIMING WAVEFORMS 17
3-5 COLOR INPUT DATA REFERANCE 18
3-6 POWER SEQUENCE 19
3-7 VCC POWER DIP CONDITION 20
4 OPTICAL SPECIFICATIONS 21
5 MECHANICAL CHARACTERISTICS 25
6 RELIABILITY 28
7 INTERNATIONAL STANDARDS 29
7-1 SAFETY 29
7-2 EMC 29
8 PACKING 30
8-1 DESIGNATION OF LOT MARK 30
8-2 PACKING FORM 30
9 PRECAUTIONS 31
Ver 1.2 Sept. 11, 2008 2 / 32
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LM171WX3
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision No Date Page Description
Ver 0.1 Mar. 13, 2008 Preliminary Specifications
Ver 0.2 Mar. 14, 2008 4 Added the Color Gamut
Ver 1.0 Apr. 15, 2008 Final Specifications
27 Updated the mechanical drawing : Rear view
Ver 1.1 Apr. 24, 2008 6 Corrected the typo : The Power Supply Input Current Max.
Ver 1.2 Sept. 11, 2008 3 Corrected the page number of contents
6 Corrected the typo : Permissive Power Input Ripple
15 Updated the Backlight connector view and notes
26 Updated the mechanical drawing : Front view
27 Updated the mechanical drawing : Rear view
Ver 1.2 Sept. 11, 2008 3 / 32
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LM171WX3
Liquid Crystal Display
Product Specification
1. General Description
LM171WX3-TLC2 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 17.1 inch diagonally measured active
display area with WXGA+ resolution (1440 vertical by 900 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 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 LM171WX3-TLC2 characteristics provide an excellent flat panel display for office
automation products such as monitors.
RGB,DLK,DE
RGB
Hsync,Vsync
(LVDS 2Port) Source Driver Circuit
CN1 Timing Controller 1 1440
(30pin) (LVDS Rx integrated)
VLCD+5V
TFT - LCD Panel
Power Circuit (1440 RGB 900 pixels)
Block
CN2 (3pin)
Back light Assembly (2CCFL)
CN3 (3pin)
General Features Figure 1. Block diagram
Active screen size 17.1 inch (43.3019cm) diagonal
Outline Dimension 389.2(H)x254.5(V)x11.5(D) mm (Typ.)
Pixel Pitch 0.255mm x 0.255mm
Pixel Format 1440 horiz. by 900 vert. Pixels. RGB stripe arrangement
Display Colors 16.7M colors
Luminance, white 250 cd/m2(Typ. Center 1 point)
Power Consumption 13.2 Watts(Typ.) (2.88 Watt@VLCD, 10.32 Watt@250cd/[Lamp=8mA])
Weight 1360g (Typ.)
Display operating mode Transmissive mode, normally white
Surface treatments Hard coating (3H), Anti-glare treatment of the front polarizer
Color Gamut 60% CIE1931, 65% CIE 1976
Ver 1.2 Sept. 11, 2008 4 / 32
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LM171WX3
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
Values
Parameter Symbol Units Notes
Min. Max.
Power Supply Input Voltage VCC 0.3 5.5 V dc At 25
Operating Temperature TOP 0 50 1
Storage Temperature TST 20 60 1
Operating Ambient Humidity HOP 10 90 %RH 1
Storage Humidity HST 10 90 %RH 1
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.
Figure 2. Temperature and relative humidity
Ver 1.2 Sept. 11, 2008 5 / 32
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LM171WX3
Liquid Crystal Display
Product Specification
3. Electrical specifications
3-1. Electrical characteristics
The LM171WX3-TLC2 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 Characteristics
Values
Symbol Units Notes
Parameter
Min. Typ. Max.
MODULE :
Power Supply Input Voltage VCC 4.5 5.0 5.5 V
Permissive Power Input Ripple VRF - - 200 mV 12
Power Supply Input Current ICC - 575 878 mA 1
Differential Impedance Zm 90 100 110 ohm
Power Consumption Pc TYP - 2.88 3.3 Watts 1
Pc MAX - 3.38 4.39 Watts
Rush Current IRUSH - - 3 A 2
LAMP for each CCFL:
Operating Voltage VBL 615 645 815 VRMS 3
(@9.0mA) (@8.0mA) (@2.5mA)
Operating Current IBL 2.5 8.0 9.0 mARMS
Established Starting Voltage VS 4
at 25 C - - 1000 VRMS
at 0 C - - 1250 VRMS
Operating Frequency f BL 40 60 70 kHz 5
Discharge Stabilization Time TS - - 3 Minutes 6
Power Consumption PBL - 10.32 11.35 Watts 7
Life Time 40,000 - - Hrs 8
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 your instrument.
Ver 1.2 Sept. 11, 2008 6 / 32
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LM171WX3
Liquid Crystal Display
Product Specification
Note. Do not attach a conducting tape to lamp connecting wire. If the lamp wire attach to conducting tape,
TFT-LCD Module have a low luminance and the inverter has abnormal action because leakage current
occurs between lamp wire and conducting tape.
1. The specified current and power consumption are under the VCC=5.0V, 25 C, fV (frame frequency)
=60Hz condition. Mosaic and max power pattern shown in the [ Figure 3 ] is displayed.
2. The duration of rush current is about 5ms. And VCC rise time is 500us r 20%.
3. Operating voltage is measured under 25 .The variance of the voltage is 10%.
4. The voltage above Vs should be applied to the lamps for more than 1 second
for start-up.(when no load condition.)
( Inverter open lamp 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.
5. 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.
Lamp frequency may produce interference with horizontal synchronous frequency and as a result this
may cause beat on the display.Therefore lamp frequency shall be as away as possible from the
horizontal synchronous frequency and from its harmonics in order to prevent interference.
6. 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%.
The used lamp current is the lamp typical current.
7. The lamp power consumption shown above does not include loss of external inverter under 25 .
The used lamp current is the lamp typical current.
8. The life time is determined as the time at which brightness of lamp is 50% compared to that of initial
value at the typical lamp current on condition of continuous operating at 25 2 .
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.
It shall help increase the lamp lifetime and reduce its leakage current.
a. The unbalance rate of the inverter waveform should be 10% below;
b. The distortion rate of the waveform should be within 2 10%;
c. The ideal sine wave form shall be symmetric in positive and negative polarities.
d. It should be measured with lamp currents of high voltage side.
Ip * Asymmetry rate = | I p
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