LP171WP4 TLN2
LP171WP4 TLN2
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                                                                                                       LP171WP4
                                                                                             Liquid Crystal Display
                                                Product Specification
                                           SPECIFICATION
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                                                Contents
      No                                            ITEM                         Page
                COVER                                                              1
CONTENTS 2
RECORD OF REVISIONS 3
1 GENERAL DESCRIPTION 4
3 ELECTRICAL SPECIFICATIONS
6 RELIABLITY 24
7 INTERNATIONAL STANDARDS
7-1 SAFETY 25
7-2 EMC 25
8 PACKING
9 PRECAUTIONS 27-28
RECORD OF REVISIONS
                                                                                          EDID
Revision No Revision Date    Page                            Description
                                                                                           ver
    1.0      Jan. 30, 2008    -      Final Draft                                           1.0
1. General Description
 The LP171WP4 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 17.1 inches 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 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 LP171WP4 has been designed to apply the interface method that enables low power, high speed, low
EMI.
 The LP171WP4 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
LP171WP4 characteristics provide an excellent flat display for office automation products such as Notebook
PC.
                                Timing
            1                                                                           1                              1440
                                Control
        User connector
                                 Block
                                                                                  1
                                                             GIP(Gate In Panel)
                                EDID                                              900
                                BLOCK
       CN                                                                                         Backlight Ass’y
                         Control & Data              Power                                  EDID signal & Power
General Features
 Active Screen Size              17.1 inches diagonal
 Outline Dimension               382.2(H, typ) × 244.5(V, typ) × 6.5(D,max) [mm]
 Pixel Pitch                     0.255mm × 0.255 mm
 Pixel Format                    1440 horiz. By 900 vert. Pixels RGB strip arrangement
 Color Depth                     6-bit, 262,144 colors
 Luminance, White                200 cd/m2(Typ.5 point)
 Power Consumption               Total 6.5 Watt(Typ.) @ LCM circuit 1.70Watt(Typ.), B/L input 4.80Watt(Typ.)
 Weight                          705g (Max.)
 Display Operating Mode          Transmissive mode, normally white
 Surface Treatment               Hard Coating(2H), Glare treatment of the front polarizer
 RoHS Comply                     Yes
                                                                   Values
              Parameter                Symbol                                                        Units            Notes
                                                           Min               Max
 Power Input Voltage                       VCC            -0.3               4.0                     Vdc           at 25 ± 5°C
 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.
90% 80%
60 60%
                   Wet Bulb                         50
                                                                                   Humidity[(%)RH]
                                ℃]
                   Temperature [℃                                                                    Storage
40 40%
                                      30                                                             Operation
                               20
                                                                             20%
                          10
                    0
                                                                             10%
-20 0 10 20 30 40 50 60 70 80
                                                ℃]
                          Dry Bulb Temperature [℃
3. Electrical Specifications
3-1. Electrical Characteristics
 The LP171WP4 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.
 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%.
Note)
 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%.
    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:
                             Ip
                                                                 | I p – I –p | / Irms * 100%
                                                             * Distortion rate
                                  I -p
                                                                 I p (or I –p) / Irms
  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)
 Normal current wave         Abnormal current wave         Abnormal current wave                Abnormal current wave
     - Standard                     - Bad                         - Bad                                - Bad
  Notes : 1. The high voltage side terminal is colored Sky Blue and the low voltage side terminal is Green.
   Ver. 1.0                                                   April. 2, 2008                                                  8 / 31
                                                                                                       LP171WP4
                                                                                             Liquid Crystal Display
                                        Product Specification
3-3-1. DC Specification
                                            Symb
                Description                                  Min       Max           Unit          Notes
                                             ol
   LVDS Differential Voltage                 |VID|           100       600           mV                -
   LVDS Common mode Voltage                  VCM             0.6        1.8           V                -
   LVDS Input Voltage Range                  VIN             0.3        2.1           V                -
3-3-2. AC Specification
Freq.
           Fmax
                                                             Fcenter * FDEV
           Fcenter
Fmin
                                            1
                                           FMOD
Time
                      tCLK
    DCLK                             0.5 Vcc
                                                 tHP
  Hsync t
         WH
   Data Enable
                                                  tVP
              tWV
  Vsync                                                                                  tVFP
                             tVBP                               tWVA
Data Enable
Black 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Red 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0
Green 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0
   Basic       Blue          0     0    0       0   0     0 0        0   0       0   0     0 1     1    1        1     1     1
   Color       Cyan          0     0    0       0   0     0 1        1   1       1   1     1 1     1    1        1     1     1
Magenta 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1
Yellow 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0
White 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
RED (00) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (01) 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
RED … … … …
RED (62) 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (63) 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (00) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (01) 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0
GREEN ... … … …
GREEN (62) 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0
GREEN (63) 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0
BLUE (00) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
BLUE (01) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
BLUE … … … …
BLUE (62) 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0
BLUE (63) 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1
                                   90%                                                     90%
Power Supply For LCD
    VCC
                             0V 10%                                                              10%
                                                                                    T5    T6       T7
                                          T1      T2
T3 T4
 Note)
  1. Valid Data is Data to meet “3-3. LVDS Signal Timing Specifications”
  2. Please avoid floating state of interface signal at invalid period.
  3. When the interface signal is invalid, be sure to pull down the power supply for LCD VCC to 0V.
  4. Lamp power must be turn on after power supply for LCD and interface signal are valid.
4. Optical Specification
Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 30 minutes in
a dark environment at 25°C. The values specified are at an approximate distance 50cm from the LCD surface
at a viewing angle of Φ and Θ equal to 0°.
FIG. 1 presents additional information concerning the measurement equipment and method.
                                                       50cm
                                      Table 9. OPTICAL CHARACTERISTICS
Note)
 1. Contrast Ratio(CR) is defined mathematically as
                            Surface Luminance with all white pixels
      Contrast Ratio =
                            Surface Luminance with all black pixels
 2. Surface luminance is the average of 5 point across the LCD surface 50cm from the surface with
    all pixels displaying white. For more information see FIG 1.
 3. The variation in surface luminance , The panel total variation (δ WHITE) is determined by measuring LN
    at each test position 1 through 13 and then defined as followed numerical formula.
   For more information see FIG 2.
                                    Maximum(L1,L2, … L13)
             δ WHITE =
                                    Minimum(L1,L2, … L13)
 4. Response time is the time required for the display to transition from white to black (rise time, TrR) and
    from black to white(Decay Time, TrD). For additional information see FIG 3.
 5. Viewing angle is the angle at which the contrast ratio is greater than 10. The angles are determined
    for the horizontal or x axis and the vertical or y axis with respect to the z axis which is normal to the
     LCD surface. For more information see FIG 4.
FIG. 2 Luminance
<measuring point for surface luminance & measuring point for luminance variation>
                                                H
                                        A                                D
                                                                                     A : H/4 mm
                                                                                     B : V/4 mm
                                L2                               L3                  C : 10 mm
                                                                                     D : 10 mm
             B
                                                                                     POINTS : 13 POINTS
     V
                      L9                        L1                           L10
                                        Center Point
L4 L5
                                              TrR                                  TrD
                            %
                       100
                        90
           Optical
           Response
                        10
                         0      white                                                      white
                                                                 black
5. Mechanical Characteristics
The contents provide general mechanical characteristics for the model LP171WP4. In addition the figures
in the next page are detailed mechanical drawing of the LCD.
                                     Horizontal                         367.2 mm
              Active Display Area
                                     Vertical                           229.5 mm
   Notes : 1. Screw plated through the method of non-electrolytic nickel plating is preferred
              to reduce possibility that results in vertical and/or horizontal line defect due to
              the conductive particles from screw surface.
Define
NO GOOD GOOD
1.If system antenna is overlapped with T-CON,it might be cause the noise.
#6 #5 #4 #3 #2 #1
Good Ok Bad
bracket
                                                                                   User connector
                                                                                   area.
              A                                             A-1
                                                                                 User connector
                                                                                 Cable pathway.
              A~A-1           cut
                                                                        FPC:Flexible Printed Circuit.
              1.CNT area is specially sensitive against external stress,and additional
    Define      gap by cutting on system cover will be helpful on removing the Ripple.
              2.Using a thinner CNT will be better. (eg: FPC type)
  Ver. 1.0                              April. 2, 2008                                       23 / 31
                                                                                                    LP171WP4
                                                                                          Liquid Crystal Display
                                               Product Specification
6. Reliability
7. International Standards
7-1. Safety
   a) UL 60950-1:2003, First Edition, Underwriters Laboratories, Inc.,
   Standard for Safety of Information Technology Equipment.
   b) CAN/CSA C22.2, No. 60950-1-03 1st Ed. April 1, 2003, Canadian Standards Association,
   Standard for Safety of Information Technology Equipment.
   c) EN 60950-1:2001, First Edition,
   European Committee for Electrotechnical Standardization(CENELEC)
   European Standard for Safety of Information Technology Equipment.
7-2. EMC
   a) ANSI C63.4 “Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and
   Electrical Equipment in the Range of 9kHZ to 40GHz. “American National Standards Institute(ANSI),
   1992
   b) C.I.S.P.R “Limits and Methods of Measurement of Radio Interface Characteristics of Information
   Technology Equipment.“ International Special Committee on Radio Interference.
   c) EN 55022 “Limits and Methods of Measurement of Radio Interface Characteristics of Information
   Technology Equipment.“ European Committee for Electrotechnical Standardization.(CENELEC), 1998
   ( Including A1: 2000 )
8. Packing
 8-1. Designation of Lot Mark
  a) Lot Mark
A B C D E F G H I J K L M
  Note
    1. YEAR
             Year     2001   2002    2003      2004    2005        2006   2007      2008      2009          2010
Mark 1 2 3 4 5 6 7 8 9 0
2. MONTH
             Month    Jan     Feb     Mar      Apr      May        Jun        Jul       Aug       Sep       Oct        Nov     Dec
             Mark       1      2         3        4        5        6         7          8         9         A         B        C
9. PRECAUTIONS
Please pay attention to the followings when you use this TFT LCD module.
 (2) Response time depends on the temperature.(In lower temperature, it becomes longer.)
 (3) Brightness depends on the temperature. (In lower temperature, it becomes lower.)
     And in lower temperature, response time(required time that brightness is stable after turned on) becomes
     longer.
 (4) Be careful for condensation at sudden temperature change. Condensation makes damage to polarizer or
     electrical contacted parts. And after fading condensation, smear or spot will occur.
 (5) When fixed patterns are displayed for a long time, remnant image is likely to occur.
 (6) Module has high frequency circuits. Sufficient suppression to the electromagnetic interference shall be
     done by system manufacturers. Grounding and shielding methods may be important to minimized the
     interference.
9-5. STORAGE
When storing modules as spares for a long time, the following precautions are necessary.
(1) Store them in a dark place. Do not expose the module to sunlight or fluorescent light. Keep the
    temperature between 5°C and 35°C at normal humidity.
(2) The polarizer surface should not come in contact with any other object.
    It is recommended that they be stored in the container in which they were shipped.