LG LP-141WX1-TLC4 Service manual

LP141WX1

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Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

)

(
(

Preliminary Specification●

)

Final Specification

14.1” WXGA TFT LCDTitle

Customer

MODEL

*When you obtain standard approval,

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DATESIGNATURE

/

/

/

please use the above model name without suffix

S.C. Yun / G.Manager

REVIEWED BY

S.R. Kim / Manager

PREPARED BY

D. G. Choi / Engineer

LG.Philips LCD Co., Ltd.SUPPLIER
LP141WX1*MODEL
TLC4Suffix

DATESIGNATURE

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

Ver. 0.0 Apr. 30, 2007

Products Engineering Dept.

LG. Philips LCD Co., Ltd

1 / 28

Product Specification

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Contents

LP141WX1

Liquid Crystal Display

ITEMNo

COVER
CONTENTS
RECORD OF REVISIONS
GENERAL DESCRIPTION1
ABSOLUTE MAXIMUM RATINGS2

ELECTRICAL SPECIFICATIONS3
ELECTRICAL CHARACTREISTICS3-1

INTERFACE CONNECTIONS3-2
SIGNAL TIMING SPECIFICATIONS3-3
SIGNAL TIMING WAVEFORMS3-4
COLOR INPUT DATA REFERNECE3-5

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POWER SEQUENCE3-6
OPTICAL SFECIFICATIONS4
MECHANICAL CHARACTERISTICS5

Page

1
2
3
4
5

6
7
9

9
10
11
12
16

RELIABLITY6
INTERNATIONAL STANDARDS7
SAFETY7-1
EMC7-2
PACKING8
DESIGNATION OF LOT MARK8-1
PACKING FORM8-2
Label Description8-3
PRECAUTIONS9
APPENDIX. Enhanced Extended Display Identification Data A

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Product Specification

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RECORD OF REVISIONS

LP141WX1

Liquid Crystal Display

DescriptionPageRevision DateRevision No

First Draft-Apr. 30. 20070.0

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EDID

ver

V0.0

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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 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 LP141WX1 has been designed to apply the interface method that enables low power, high speed, low
EMI.

The LP141WX1 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
LP141WX1 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

Power Consumption
(Window Desk Top Pattern)

LVDS &
Timing

Control

Block

POWER

BLOCK

EDID

BLOCK

Control & Data Power EDID signal & Power

14.1 inches diagonal Active Screen Size

320.0(H) × 206.0(V) × 5.3(D) [mm] (Max.)Outline Dimension

0.2373 mm × 0.2373 mmPixel Pitch
1280 horiz. By 800 vert. Pixels RGB strip arrangementPixel Format
6-bit, 262,144 colorsColor Depth
185 cd/m2(Typ.5 point)Luminance, White

Total 5.2 Watt(Typ.) @ LCM circuit 1.1Watt(Typ.), B/L input 4.1Watt(Typ.)
400g(Max.), 390g(Typ.)Weight

Transmissive mode, normally whiteDisplay Operating Mode
Haze44% (ARC150T)Surface Treatment

YesRoHS Comply

(LOG_B type)

(LOG_B type)

(LOG_B type)(LOG_B type)

1

Gate Driver

800

Source Driver Circuit

1 1280

TFT-LCD Panel

(1280 x RGB x 800)

Backlight Ass’y

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LP141WX1

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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

60

Values

90% 80%

MaxMin

60

40

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°CMax, and no condensation of water.

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Wet Bulb
Temperature [℃℃℃℃]

20

10

0

Symbol

OP

ST

OP

ST

50

40

30

Units

Humidity[(%)RH]

Storage

Operation

at 25 ± 5°CVdc4.0-0.3VCC

1°C500T
1°C60-20H
1%RH9010H
1%RH9010H

-20

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10

20 30 40 50

Dry Bulb Temperature [℃℃℃℃]

60 70 800

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LP141WX1

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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 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

(window Desk Top Pattern)

Power Consumption
(window Desk Top Pattern)

LAMP :

Operating Voltage
Operating Current
Power Consumption
Operating Frequency

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I

CC

ZmDifferential Impedance

BL

BL

BL

BL

-

-Pc

-P

Values

390

(345)

1.29

(1.13)

880(2.0mA)675(6.0mA)640(7.0mA)V

MaxTypMin

3.63.33.0VCCPower Supply Input Voltage

445

(395)

1.47

(1.30)

11010090

7.06.02.0I

4.54.1

NotesUnit

V

DC

1mA

1Watt
2Ohm

V

RMS

RMS

kHz806550f

3mA

4Min3--TsDischarge Stabilization Time
5Hrs--15,000Life Time

Established Starting Voltage

at 25℃
at 0 ℃

Vs

1180
1400

V

RMS

V

RMS

Note)

1. The specified current and power consumption are under the Vcc = 3.3V , 25℃, fv = 60Hz condition
whereas full black pattern(Window Desk Top 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.

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.

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Liquid Crystal Display

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 p(or I –p) / I

rms

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LP141WX1

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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 LGC.

Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)

NotesDescriptionSymbolPin

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

1
2
3
4
5
6
7
8
9

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NC No Connect

GroundGND
Power Supply, 3.3V Typ.VCC
Power Supply, 3.3V Typ.VCC
DDC 3.3V powerV EEDID
Reserved for supplier test pointNC
DDC ClockClk EEDID
DDC DataDATA EEDID
Negative LVDS differential data inputRIN0­Positive LVDS differential data inputRIN0+
GroundGND
Negative LVDS differential data inputRIN1­Positive LVDS differential data inputRIN1+
GroundGND
Negative LVDS differential data inputRIN2­Positive LVDS differential data inputRIN2+
GroundGND
Negative LVDS differential clock inputCLKIN­Positive LVDS differential clock inputCLKIN+
GroundGND
No ConnectNC

GroundGND
No ConnectNC
No ConnectNC
GroundGND
No ConnectNC
No ConnectNC
GroundGND
No ConnectNC
No ConnectNC

1, Interface chips

1.1 LCD : THINE,
KE5M5U2654 (LCD Controller)
including LVDS Receiver
(LVDSRX_SPI_UMOD )

1.2 System : it must include international

* Pin to Pin compatible with LVDS

2. Connector

2.1 LCD : GT101-30S-HR11, LGC or

2.2 Mating : FI-X30M or equivalent.

2.3 Connector pin arrangement

30

standard LVDS Transmitter.

its compatibles

1

[LCD Module Rear View]

The backlight interface connector is a model BHSR-02VS-1, manufactured by JST
The mating connector part number is SM02B-BHSS-1 or equivalent.

Table 5. 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 Blue.

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LP141WX1

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Liquid Crystal Display

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

NoteUnitMaxTypMinSymbolITEM

1MHz75.869.365.5f

Hsync

Vsync

Data

Enable

FrequencyDCLK

Width

Width-Active

Period

Width

Width-Active

Horizontal back porch

Horizontal front porch

Vertical back porch

Vertical front porch

CLK

WH

WHA

VP

WV

WVA

HBP

HFP

VBP

VFP

148814051352ThpPeriod

483216t

128012801280t

849822808t

862t

800800800t

1044540t

564816t

35135t

631t

tCLK

tHP

tCLK

tHP

Note)

1. In this documentation, all reliabilities are specified for timing specification based on refresh rate of 60Hz.
However, LP141WX1 has a good actual performance even at lower refresh rate( eg. 40Hz or 50Hz) for

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power saving mode, whereas LP141WX1 is secured only for function under lower refresh rate.
60Hz at Normal mode, 50Hz ,40 Hz at Power save mode. Don’t care Flicker level (power save mode).

3-4. Signal Timing Waveforms

High: 0.7VCC

Condition : VCC =3.3V

Data Enable, Hsync, Vsync

Low: 0.3VCC

DCLK

Hsync

t

CLK

WH

t

HBP

0.5 Vcc

t

HP

t

t

Data Enable

t

VP

t

WV

Vsync

t

VBP

t

Data Enable

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WHA

WVA

t

HFP

t

VFP

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