LG LP-141X8-A1 Service manual

LP141X

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LP141X8888----AAAA1111

Product Specification

Product Specification

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LP141X LP141X

Liquid Crystal Display

Liquid Crystal Display

Liquid Crystal Display Liquid Crystal Display

SPECIFICATION

FOR

APPROVAL

( ♦♦♦♦ ) Preliminary Specification
( ) Final Specification

Title 14.1” XGA TFT LCD

BUYER Dell(Compal) SUPPLIER LG.Philips LCD Co., Ltd.
MODEL Connery
SUFFIX A1

please use the above model name without suffix.

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

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SIGNATURE

/

/

/

DATE

****MODEL

* When you obtain standard approval ,

APPROVED BY

S.H.Kang / S. Manager

REVIEWED BY
S.C.Yoon / Manager
B.H.Koo / Manager

PREPARED BY

M.J.Lee / Engineer

M.K.Jang / Engineer

Product Engineering Dept.

LG.Philips LCD Co., Ltd.

LP141X8

DATE

The preliminary document is subject to change without prior notice.

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Product Specification

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LP141X LP141X

Liquid Crystal Display

Liquid Crystal Display

Liquid Crystal Display Liquid Crystal Display

CONTENTS

NO.

- 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 7
3-3 SIGNAL TIMING SPECIFICATIONS 9
3-4 SIGNAL TIMING WAVEFORMS 10
3-5 COLOR INPUT DATA REFERENCE 11
3-6 POWER SEQUENCE 12

4 OPTICAL SPECIFICATIONS 13
5 MECHANICAL CHARACTERISTICS 16
6 RELIABILITY 20
7 INTERNATIONAL STANDARDS 21

7-1 SAFETY 21

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ITEM Page

7-2 EMC 21

8 PACKING 22

8-1 DESIGNATION OF LOT MARK 22
8-2 PACKING FORM 22

9 PRECAUTIONS 23

9.1 MOUNTING PRECAUTIONS 23

9.2 OPERATING PRECAUTIONS 23

9.3 ELECTROSTATIC DISCHARGE CONTROL 24

9.4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE 24

9.5 STORAGE 24

9.6 HANDLING PRECAUTIONS FOR PROTECTION FILM 24
A APPENDIX. Enhanced Extended Display Identification Data 25

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Product Specification

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LP141X LP141X

Liquid Crystal Display

Liquid Crystal Display

Liquid Crystal Display Liquid Crystal Display

RECORDS OF REVISIONS

Version No Date Page

0.0

0.1

0.2

AUG 30, 2000
SEP 19, 2000

NOV 03, 2000

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-

4,18

6

13,14

17

4,16

6

9
10
12
13
14
18

DESCRIPTION
First Draft
Change the weight, for the application of VERTICAL
ASSEMBLY (Added INVERTER)
Change 3-1. Electrical Characteristics
Added and changed Table 2 (Parameter)
* Backlight, Inverter parts
Add 3-7. Enhanced Extended Display Identification
Data (EEDID)
Change the gray scale specification.
Change the outline dimensions(Depth)
Change 3-1. Electrical Characteristics
Change 3-3. Signal Timingl specifications(Table 6)
Change 3-4. Signal Timingl Waveforms
Change 3-6. Power Sequence (Add PWR_SRC)
Change 4. Optical specifications(Table 8)
Change the gray scale specification.
Add Note) 2.

25, 26

Change APPENDIX[A] Enhanced Extended Display
Identification Data (EEDID)

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Product Specification

Product Specification

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LP141X LP141X

Liquid Crystal Display

Liquid Crystal Display

Liquid Crystal Display Liquid Crystal Display

1. General Description

The LP141X8-A1 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 a 14.1 inches diagonally
measured active display area with XGA resolution(768 vertical by 1024 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 LP141X8-A1 has been designed to apply the interface method that enables low power, high speed, low
EMI. Flat Link must be used as a LVDS(Low Voltage Differential Signaling) chip.
The LP141X8-A1 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 LP141X8-A1
characteristics provide an excellent flat panel display for office automation products such as Notebook PC.

Timing

Control

Block

CN1

FlatLink interface

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J1

B/L Inverter J2

Power

Block

Row Driver circuit

Column driver circuit

TFT-LCD

(1024×768)

J3 Backlight Ass’y

General Features

Active screen size 14.1 inches(35.814cm) diagonal
Outline dimensions 299(H) × 227(V) × 5.7(D) mm (Typ.)
Pixel pitch 0.279 mm × 0.279 mm
Pixel format 1024 horiz. by 768 vert. pixels
RGB stripe arrangement
Color depth 6-bit, 262,144 colors
Luminance,White 150 cd/m2 (Typ.)
Power Consumption Total 6.02Watt(Typ.)
LCM Circuit 1.12Watt(Typ.), Backlight Inverter Input 4.90Watt(Typ.)
Weight 509g (Typ.), 521g (Max.) with the inverter and bracket.
Display operating mode Transmissive mode, normally white
Surface treatments Hard coating (3H),
Anti-glare treatment of the front polarizer

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40

50

60

70 80 0

20

30

50

60

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Product Specification

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LP141X LP141X

Liquid Crystal Display

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Liquid Crystal Display Liquid Crystal Display

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 symbol

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℃ Max, and no condensation of water.

V

CC

T

OP

T

ST

H

OP

H

ST

Values

Min. Max.

-0.3
0

-20
10
10

4.0
50
60
90
90

Units Notes

Vdc

℃
℃

%RH
%RH

at 25 ±5℃

1
1
1
1

Wet Bulb

Temperature [℃]

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10

0

-20

10

20 30

Dry Bulb Temperature [℃]

40

95% 80%

60

40

20

10

%

%

%

%

Storage

Operation

Humidity [(%)RH]

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Product Specification

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LP141X LP141X

Liquid Crystal Display

Liquid Crystal Display

Liquid Crystal Display Liquid Crystal Display

3. Electrical Specifications
3-1. Electrical Characteristics

The LP141X8-A1 requires two power inputs. One is employed to power the LCD electronics and to drive the
TFT array and liquid crystal. The second input is powers of the Inverter.

Table 2 ELECTRICAL CHARACTERISTICS: (Ta= 25±±±±2℃℃℃℃)

Parameter Symbol

MODULE

Power Supply Input Voltage
Power Supply Input Current
Differential Impedance
Power Consumption
Rush Current
Duration of rush current

BACKLIGHT

Operating Voltage
Operating Current
Operating Frequency
Discharge Stabilization Time
Life Time

Parameter Symbol

Min. Typ. Max.

V

I

RUSH

T

CC

I

CC

Z

m

Pc

RUSH

V

L

IL

F

L

TS

3.0

-

90

-

-

-

680(6mA)

2.7
45

-

10,000

Condition

Values

3.3

0.340
100

1.12

1.0

-

725(5mA)

910(2.7mA)

5.0
58

-

-

Min. Typ. Max.

3.6

0.375
110

1.24

1.5
30

6.0
80

3

-

Values

Units Notes

Vdc

A

Ohm

W

A

ms

V

rms

mA

rms

kHz
min

Hours

1
2
1

3
4

IL =6.0mA

Units Notes

INVERTER (Ambit/Sumida)
Input Voltage
Input Current
Input Power Consumption
Backlight On/Off Control

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Backlight Adjust

(Lamp Current Control)
Output Voltage
Output Curren

Operating Frequency
Output Power Consumption
Open Lamp Voltage
Efficiency
Striking Time

INV-SRC

Iin
P

in

FPVEE

SMB-DAT

V

out

Iout

Freq.
P

out

V

open

η

Ts

(=Vin, PWR_SRC)
Vin=14.4V, Iout=5.8mA
Vin=14.4V, Iout=5.8mA
FRVEE=High
FRVEE=Low
* 00H=Luminance max.

Vin=14.4V, Iout=5.8mA

Ta=25℃,Aging 20minutes

SMB-DAT=FFH (min.)
SMB-DAT=00H (max.)
Vin=14.4V, Iout=5.8mA
Vin=14.4V, Iout=5.8mA
No Load, Vin=9V
Vin=9V, Iout=5.8mA

9.0
290

4.17

2.0

-0.3
FFH

580

2.7

5.5
50

3.36
1450
80

0.6

14.4
340

4.90

-

-

­680

3.0

5.8
60

3.94

-

-

1.0

21.0
390

5.62

5.25

0.8
00H

780

3.3

6.0
70

4.52

-

-

1.4

Vdc
mA
W
Vdc
Vdc

­Vrms

mA

rms

mA

rms

KHz
W
Vrms
%
sec

Notes: 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 from LVDS Tx to the mating
connector.

3. 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%.

4. 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℃.

5. The specified total power consumption is the sum of the module and inverter input under the

Vcc = 3.3V , fv = 60Hz, Dclk=65MHz, 25℃, Vin=14.4V, Iout=5.8mA, SMB-DAT=00H

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Product Specification

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LP141X LP141X

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Liquid Crystal Display Liquid Crystal Display

3-2. Interface Connections

The interface connections are compatible with ISP (Industry Standard Panels) 14.1” Mounting and Top
Level Interface Requirements (Version2, June,2000) defined by SPWG (Standard Panels Working Group).

This LCD employs two interface connections, a 20 pin connector is used for the module electronics and the
other connector is used for the integral backlight system.
The electronics interface connector is a model GT122-20P-H15-R manufactured by LG Cable. The pin
configuration for the connector is shown in the table below.

Table 3 MODULE CONNECTOR PIN CONFIGURATION (LVDS) [CN1]

Pin

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20

The backlight interface connector(J3) is a BHSR-02VS-1(JST, 2pin), and the mating connector(J2) is a SM02B­BHSS-1(JST) or equivalent. The Inverter interface connector(J1) is a WR-L16S-VF-HD2-1(JAE, 16pin).
The pin configuration for the connector is shown in the table belows.

Inverter interface connector (J1)

Pin

1
2
3
4
5
6
7

8

9
10
11

12
13
14
15
16

Backlight interface connector(J3)

Symbol Description Notes

PWR_SRC
PWR_SRC

PWR_SRC

Backlight_On

PANEL_ID3
PANEL_ID2
PANEL_ID1
PANEL_ID0

Vcc

Vcc
GND
GND

A0M

A0P

GND

A1M

A1P

GND

A2M

A2P

GND

CLKM

CLKP

GND

VEDID

NC

Clk_EDID

Data_EDID

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Table 4 BACKLIGHT INVERTER CONNECTOR PIN CONFIGURATION(J1, J3)

Symbol Voltage Description Notes

GND
GND

GND

5V_SUS
5V_ALW

SMB_DAT
SMB_CLK

NC

4.85V to 5.2V

4.85V to 5.2V

LCD VDD (3.3V)
LCD VDD (3.3V)

Differential Signal
Differential Signal

Differential Signal
Differential Signal

Differential Signal
Differential Signal

Differential Signal
Differential Signal

No Connection

9.0V to 21V

9.0V to 21V
0V

9.0V to 21V
0V
0V

(= FPVEE)

Ground
Ground

Ground

Ground

Ground

Ground

VEDID

Clk_EDID

Data_EDID

This power rail should be used as a power source for inverter.
This power rail should be used as a power source for inverter.

This power rail should be used as a power source for inverter.

This should be used as a power source for the control circuit on
the inverter.
This should be used as a power source that store the brightness
values and interface with SMB_CLK and SMB_DAT.
SMBus interface for sending brightness information to the inverter.

SMBus interface for sending brightness information to the inverter.
Control signal input into the inverter to turn the backlight ON.

1 (OPEN)
1 (OPEN)

1. Interface chips

1.1 LCD : SN75LVDS88B (TI)
(SN75LVDS84 core + Timing Controller)

1.2 System : SN75LVDS86(TI)

2. Connector (SPWG Style “A” compatible)

2.1 LCD : GT122-20P-H15-R (LG Cable)

2.2 Mating : FI-SE20M-HF(JAE) or compatible

2.3 Connector pin arrangement

< Viewing on Display side >

Ground
Ground

Ground

No Connection
0 (Connected to GND)
0 (Connected to GND)

1 … 20

CN1

J1

Inverter

J2

J3

1
1
1
1

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Pin

1
2

Symbol Description Terminal Color Notes

HV

LV

Power supply for lamp (High voltage side)

Power supply for lamp (Low voltage side)

Notes: 1. The PANEL_ID of LP141X8-A1 is 0011(ID3 to ID0).

Table 5 REQUIRED SIGNAL ASSIGNMENT FOR FlatLink Transmitter

Pin # Pin Name

1 D4 R4 48
2 Vcc Vcc 47

3 D5 R5 46
4 D6 G0 45
5 GND GND 44
6 D7 G1 43
7 D8 G2 42 LVDS GND
8 Vcc Vcc 41

9 D9 G3 40
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

D10 G4 39

GND GND 38

D11 G5 37 LVDS Vcc
D12 B0 36 LVDS GND

NC NC 35

D13 B1 34

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D14 B2 33 CLKOUTM

GND GND 32 CLKOUTP

D15 B3 31 LVDS GND
D16 B4 30 PLLGND
D17 B5 29 PLLVcc
Vcc Vcc 28 PLLGND
D18 HSYNC 27
D19 VSYNC 26 CLKIN Dclk

GND GND 25

Require Signals Pin # Pin Name

GND GND

Y0M A0M

Y0P A0P

Y1M A1M

Y1P A1P

Y2M A2M

Y2P A2P

SHDN SHDN

D20 DE(Data Enable)

Pink

White

Require Signals
D3 R3
D2 R2

D1 R1
D0 R0

NC NC

LVDS GND

LVDS Vcc

LVDS GND

CLKM

CLKP

LVDS GND

PLL GND

PLL Vcc

PLL GND

Notes : Refer to LVDS Transmitter Data Sheet for detail descriptions.

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