LG LP-141WX1-TLA2 Service manual

LP141WX1

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

)

(
(

Preliminary SpecificationV

)

Final Specification

Title 14.1” WXGA TFT LCD

Customer General

MODEL

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DATESIGNATURE

/

/

/

SUPPLIER LG.Philips LCD Co., Ltd.

*MODEL LP141WX1

Suffix TLA2

*When you obtain standard approval,

please use the above model name without suffix

J.H. Lee / G.Manager

REVIEWED BY

W.Y. Park / Manager

PREPARED BY

J.W. Kim / Engineer

J.M. Shin / Engineer

DATESIGNATURE

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

Ver. 0.0 July. 28, 2006

Products Engineering Dept.

LG. Philips LCD Co., Ltd

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Product Specification

Contents

LP141WX1

Liquid Crystal Display

No ITEM

COVER
CONTENTS

RECORD OF REVISIONS
1 GENERAL DESCRIPTION
2 ABSOLUTE MAXIMUM RATINGS

3 ELECTRICAL SPECIFICATIONS

3-1 ELECTRICAL CHARACTREISTICS
3-2 INTERFACE CONNECTIONS
3-3 SIGNAL TIMING SPECIFICATIONS
3-4 SIGNAL TIMING WAVEFORMS
3-5 COLOR INPUT DATA REFERNECE

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3-6 POWER SEQUENCE
4 OPTICAL SFECIFICATIONS
5 MECHANICAL CHARACTERISTICS

Page

1
2
3
4
5

6
7
9

9
10
11
12
16

6 RELIABLITY
7 INTERNATIONAL STANDARDS

7-1 SAFETY
7-2 EMC

8 PACKING

8-1 DESIGNATION OF LOT MARK
8-2 PACKING FORM

9 PRECAUTIONS

A APPENDIX. Enhanced Extended Display Identification Data

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Product Specification

RECORD OF REVISIONS

LP141WX1

Liquid Crystal Display

Revision No Revision Date Page Description

0.0 July 28, 2006 - First Draft

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EDID

ver

Ver. 0.0 July. 28, 2006

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LP141WX1

Liquid Crystal Display

Product Specification

1. General Description

The LP141WX1 is a Color Active Matrix Liquid Crys tal Display with an integral Cold Cathode Fluo rescent
Lamp (CCFL) backlight system. The matr ix 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 pixe l
is divided into Red, Green and Blue sub-pixels or dots wh ich are arranged in vertical str ipes. 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 me thod that enables low power, high speed, low
EMI.

The LP141WX1 is intended to support applications where thin thickness, low power are critical factor s and
graphic displays are important. In combination with the vertical arrangement of the sub-pixels, the
LP141WX1 characteristics prov ide an excellent flat display for office automation products such as Notebook
PC.

LVDS

&
Timing
Control

Block

CN

1

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:Control & Data :Power

Power

Block

Row Dirver Circuit

Column Driver Circuit

TFT-LCD

(1280 X 800)

J3

Backlight Ass'y

General Features

Active Screen Size 14.1 inches diagonal
Outline Dimension 319.5 (H, typ) × 205.5(V, typ) × 5.3(D, max) [mm]
Pixel Pitch 0.2373 mm × 0.2373 mm
Pixel Format 1280 horiz. By 800 vert. Pixels RGB strip arrangement
Color Depth 6-bit, 262,144 colors

2

Luminance, White 200 cd/m
Power Consumption Total 5.38 Watt(Typ.) @ LCM circuit 1.28Watt(Typ.), B/L input 4.1Watt(Typ.)

Weight 400 g (Max.), 390g(Typ.)
Display Operating Mode Transmissive mode, normally white
Surface Treatment Glare treatment of the front polarizer

RoHS Comply Yes

(Typ.5 point)

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LP141WX1

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

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

VCC -0.3 4.0 Vdc at 25 ± 5°C

TOP 050°C1
HST -20 60 °C1

HOP 10 90 %RH 1

HST 10 90 %RH 1

50

40

30

Values

Min Max

90% 80%

60

Units

60%

Humidity[(%)RH]

Storage

40%

Operation

20%

10%

NotesSymbol

-20

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10

20 30 40 50

Dry Bulb Temperature [℃]

60 70 800

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LP141WX1

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 electronic s and to drive the
TFT array and liquid crystal. The second input which powers the CCFL, is typical
inverter. The inverter is an external u nit to t h e LCD.

Table 2. ELECTRICAL CHARACTERISTICS

Parameter Symbol

MODULE :

Power Supply Input Voltage VCC 3.0 3.3 3.6 V
Power Supply Input Current I
Power Consumption Pc ­Differential Impedance

LAMP :

Operating Voltage V
Operating Current I
Power Consumption P
Operating Frequency f
Discharge Stabilization Time Ts - - 3 Min 4
Life Time 15,000 - - Hrs 5

Established Starting Voltage

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at 25℃
at 0 ℃

CC

Zm

BL

BL

BL

BL

Vs 1180

Min Typ Max

-390445

90 100 110

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

2.0 6.0 7.0 mA

-

50 65 80 kHz

Values

1.28 1.47

4.1 4.5

ly generated by an

Unit Notes

DC

Ma 1
Watt 1
Ohm 2

RMS

RMS

V

RMS

1415

V

RMS

3

Note)

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

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%.
T

is the time required for the brightness of the center of the lamp to be not less than 95%.

S

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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LP141WX1

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

(or I –p) / I

p

rms

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LP141WX1

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 FI-XB30SRL-HF11 manufactured by JAE.

Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)

Pin Symbol Description Notes

1 GND Ground
2 VCC Power Supply, 3.3V Typ.
3 VCC Power Supply, 3.3V Typ.
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

V EEDID DDC 3.3V power

NC Reserved for supplier test point

Clk EEDID DDC Clock

DATA EEDID DDC Data

R

0- Negative LVDS differential data input

IN

R

0+ Positive LVDS differential data input

IN

GND Ground

R

1- Negative LVDS differential data input

IN

R

1+ Positive LVDS differential data input

IN

GND Ground

R

2- Negative LVDS differential data input

IN

2+ Positive LVDS differential data input

R

IN

GND Ground

CLKIN- Negative LVDS differential clock input

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CLKIN+ Positive LVDS differential clock input

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GND Ground

NC No Connect

NC No Connect

GND Ground

NC No Connect

NC No Connect

GND Ground

NC No Connect

NC No Connect

GND Ground

NC No Connect

NC No Connect

1, Interface chips

1.1 LCD : THINE,
KE5M5U2518CFP (LCD Controller)
including LVDS Receiver
(LVDSRX_SPI_UMOD )

1.2 System : HP VEGA or equivalent

* Pin to Pin compatible with LVDS

2. Connector

2.1 LCD : FI-XB30SRL-HF11,JAE or

its compatibles

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-1 or equivalent.

Table 5. BACKLIGHT CONNECTOR PIN CONFIGURATION (J3)

Pin Symbol Description Notes

1 HV Power supply for lamp (High voltage side) 1
2 LV Power supply for lamp (Low voltage side) 1

Notes : 1. The high voltage side terminal is colored Pink and the low voltage side terminal is Green.

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LP141WX1

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

ITEM Symbol Min Typ Max Unit Note

DCLK Frequency f

Hsync

Vsync

Data

Enable

3-4. Signal Timing Waveforms

Data Enable, Hsync, V syn c

DCLK

Period Thp
Width t
Width-Active t
Period t
Width t
Width-Active t
Horizontal back porch t
Horizontal front porch t
Vertical back porch t
Vertical front porch t

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tCLK

0.5 Vcc

CLK

WH

WHA

VP

WV

WVA

HBP

HFP

VBP

VFP

High: 0.7VCC

Low: 0.3VCC

66.4 71.0 75.4

1368 1440 1480

16 32 48

1280 1280 1280

809 823 848

26 6

800 800 800

58 80 98

14 48 62

51540

22 2

MHz

tCLK

tHP

tCLK

tHP

Condition : VCC =3.3V

t

Hsync

Data Enable

Vsync

Ver. 0.0 July. 28, 2006

t

WH

t

WV

Data Enable

t

VBP

t

HBP

HP

t

tWHA

VP

tWVA

t

HFP

t

VFP

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