LG LP-141WX3-TLN1 Service manual

LP141WX3

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

)

(

(

Preliminary Specification

)

Final Specification

◆

14.1” WXGA TFT LCDTitle

TOSHIBACustomer

MODEL

*When you obtain standard approval,

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SIGNATUREAPPROVED BY

/

/

/

please use the above model name without suffix

APPROVED BY

K.S. Kwon / G.Manager

REVIEWED BY

W.Y. Park / Manager

PREPARED BY

M.K. Bae / Engineer

J.W. Kim / Engineer

LG.Philips LCD Co., Ltd.SUPPLIER

LP141WX3*MODEL

TLN1Suffix

SIGNATURE

Please return 1 copy for your confirmation with
your signature and comments.

Ver. 1.0 Feb. 12, 2008

Products Engineering Dept.

LG. Philips LCD Co., Ltd

1 / 31

Product Specification

Contents

LP141WX3

Liquid Crystal Display

ITEMNo

COVER

CONTENTS

RECORD OF REVISIONS

GENERAL DESCRIPTION1

ABSOLUTE MAXIMUM RATINGS2

ELECTRICAL SPECIFICATIONS3

ELECTRICAL CHARACTREISTICS3-1

INTERFACE CONNECTIONS3-2

LVDS SIGNAL TIMING SPECIFICATIONS3-3

SIGNAL TIMING SPECIFICATIONS3-4

SIGNAL TIMING WAVEFORMS3-5

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COLOR INPUT DATA REFERNECE3-6

POWER SEQUENCE3-7

OPTICAL SFECIFICATIONS4

Page

1

2

3

4

5

6

8

9

11

11

12

13

14

MECHANICAL CHARACTERISTICS5

RELIABLITY6

INTERNATIONAL STANDARDS7

SAFETY7-1

EMC7-2

PACKING8

DESIGNATION OF LOT MARK8-1

PACKING FORM8-2

PRECAUTIONS9

APPENDIX. Enhanced Extended Display Identification Data A

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24

25

25

26

26

27

29

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Product Specification

RECORD OF REVISIONS

LP141WX3

Liquid Crystal Display

DescriptionPageRevision DateRevision No

First Draft (Preliminary Specification)-Oct. 09. 20070.0

page 29 product code 0000 → 2910

page 31 EDID check sum :DC → B2

Be updated Color Coordinates14Feb. 12. 20081.0

15

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Be updated Gray scale specification

EDID

ver

0.1

0.2EDID update(be updated product code)29~31Dec. 14. 20070.1

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LP141WX3

Liquid Crystal Display

Product Specification

1. General Description

The LP141WX3 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 14.1 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 LP141WX3 has been designed to apply the interface method that enables low power, high speed, low
EMI.

The LP141WX3 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
LP141WX3 characteristics provide an excellent flat display for office automation products such as Notebook
PC.

CN

1

User connector

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30

Pin

CN

General Features

Outline Dimension

LVDS &
Timing

Control

Block

POWER

BLOCK

EDID

BLOCK

Control & Data Power EDID signal & Power

14.1 inches diagonal Active Screen Size

319.5(H,Typ.) × 205.5(V,Typ.) × 5.5(D,Max) [mm]

0.2373mm × 0.2373 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 5.2 Watt(Typ.) @ LCM circuit 1.2 Watt(Typ._Mosaic), B/L input 4.0Watt(Typ.)Power Consumption

400g(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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LP141WX3

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

60

Values

Units

MaxMin

90% 80%

60%

Humidity[(%)RH]

Storage

40%

Operation

20%

10%

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 39°C Max, and no condensation of water.

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Wet Bulb
Temperature [℃℃℃℃]

20

10

0

Symbol

50

40

30

at 25 ± 5°CVdc4.0-0.3VCC

1°C500TOP

1°C60-20HST

1%RH9010HOP

1%RH9010HST

-20

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10

20 30 40 50

Dry Bulb Temperature [℃℃℃℃]

60 70 800

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LP141WX3

Liquid Crystal Display

Product Specification

3. Electrical Specifications

3-1. Electrical Characteristics

The LP141WX3 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

Power Consumption

LAMP :

Operating Voltage

Operating Current

Power Consumption

Operating Frequency

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Established Starting Voltage

at 25℃
at 0 ℃

CC

Vs

BL

BL

BL

BL

1180
1415

Values

DC

RMS

NotesUnit

1mA414360-MosaicI

2Ohm11010090ZmDifferential Impedance

3mA

4Min3TsDischarge Stabilization Time

5Hrs15,000Life Time

MaxTypMin

3.63.33.0VCCPower Supply Input Voltage

1.41.2-MosaicPc

880(2.0mA)670(6.0mA)640(7.0mA)V

7.06.02.0I

V

V

RMS

W4.54.01.8P

kHz805545f

V

RMS

V

RMS

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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LP141WX3

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%.
TSis 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

rms

* 100%

I -p

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

* Distortion rate

I p(or I –p) / I

Abnormal current wave - Bad

rms

Abnormal current wave - Bad

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Abnormal current wave - Bad

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LP141WX3

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 GT101-30S-HR11 manufactured by LSC.

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 inputRIN0-8

Positive LVDS differential data inputRIN0+9

GroundGND10

Negative LVDS differential data inputRIN1-11

Positive LVDS differential data inputRIN1+12

GroundGND13

Negative LVDS differential data inputRIN2-14

Positive LVDS differential data inputRIN2+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, SW0612B (LCD Controller)
including LVDS Receiver

1.2 System : THC63LVD823A or equivalent

* Pin to Pin compatible with LVDS

2. Connector

2.1 LCD : GT101-30S-HR11, LSC

IS100-C30R-C15 ,UJU Elec.

2.2 Mating : FI-X30M or equivalent.

2.3 Connector pin arrangement

30

it’s compatible.

1

[LCD Module Rear View]

The backlight interface connector is a model BHSR-02VS-1, manufactured by JST or Compatible.
The mating connector part number is AMP1674817-2 or 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 White and the low voltage side terminal is Yellow.

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Product Specification

3-3. LVDS Signal Timing Specifications

3-3-1. DC Specification

LP141WX3

Liquid Crystal Display

Description

LVDS Common mode Voltage

LVDS Input Voltage Range

3-3-2. AC Specification

LVDS Clock to Data Skew Margin

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Symb

ol

CM

IN

SKEW

SKEW

- 600

NotesUnitMaxMin

-mV600100|VID|LVDS Differential Voltage

-V1.80.6V

-V2.10.3V

NotesUnitMaxMinSymbolDescription

ps+ 400- 400t

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 Feb. 12, 2008

SKEW_EO

DEV

MOD

- 1/7

+ 1/7t

T

clk

%± 3-F

KHz200-F

-

-

-

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Freq.

F

max

F

center

F

min

Product Specification

< Clock skew margin between channel >

LP141WX3

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

Previous (N-1 )th Cycle Next (N+1)th Cycle

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

Current (Nth ) Cycle

Time

G0

B1

DE

VSYNC HSYNC

X

R5 R4

B0 G5

B7 B6

< LVDS Data Format >

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