LG LP-141X11-A2 Service manual

( ○○○○ ) Preliminary Specification

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( ) Final Specification

Title 14.1” XGA TFT LCD

LP141X11

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

BUYER MODEL

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SIGNATURE DATE

SUPPLIER

*MODEL

SUFFIX

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY DATE

S. H. Kang G.Manager

REVIEWED BY

B. H. Koo Manager/ J. H. Lee Manager

PREPARED BY

J. W. Park Engineer/

S. J. Lee Engineer

LG.Philips LCD CO., Ltd. LP141X11

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

Ver. 0.0 Oct. 17, 2001

Product Engineering Dept.

LG. Philips LCD Co., Ltd

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LP141X11

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Liquid Crystal Display

Product Specification

Contents

NO. ITEM Page

COVER CONTENTS RECORD OF REVISIONS

1 2

3 1 2 3

3-1 3-2

4 5

6 7

GENERAL DESCRIPTION ABSOLUTE MAXIMUM RATINGS

ELECTRICAL SPECIFICATIONS ELECTRICAL CHARACTREISTICS INTERFACE CONNECTIONS

3-3

SIGNAL TIMING SPECIFICATIONS

3-4

SIGNAL TIMING WAVEFORMS COLOR INPUT DATA REFERNECE

3-5

POWER SEQUENCE

3-6

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OPTICAL SPECIFICATIONS MECHANICAL CHARACTERISTICS RELIABILITY

INTERNATIONAL STANDARDS

7-1

SAFETY EMC

7-2

Packing

10 11 12 14 17

21 22

22 22

DESIGNATION OF LOT MARK

8-1 8-2

Packing FORM

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PRECAUTIONS

23 23

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RECORD OF REVISIONS

Revision No Revision Date Page DESCRIPTION

0.0 OCT 17, 2001 - First Draft

LP141X11

Liquid Crystal Display

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LP141X11

Column driver circuit

Row Driver circuit

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Liquid Crystal Display

Product Specification

1. General Description

The LP141X11-A2 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 inch 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 LP141X11-A2 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 LP141X11-A2 is intended to support applications where thin thickness, wide viewing angle(option) low power are critical factors and graphic displays are important. In combination with the vertical arrangement of the sub-pixels, the LP141X11-A2 characteristics

provide an excellent flat display for office automation products such as Notebook PC or Monitors.

Timing

Control

Block

CN1

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General Features

Active screen size Outline Dimension Pixel Pitch

Pixel format Color depth Luminance, white Power Consumption Weight Display operating mode

Surface treatments

TFT-LCD

FlatLink interface

Power

Block

14.1 inches(35.71cm) diagonal

298.5(H) x 226.5(V) x 5.3(D) mm(Typ.)

0.279 mm x 0.279mm 1024 horiz. By 768 vert. Pixels RGB strip arrangement

6-bit, 262,144 colors

150 cd/m2(CCFL 6mA)

Total 4.2 Watt(CCFL 5mA)

430g(Typ.)

Transmissive mode, normally white Hard coating(3H)

Anti-glare treatment of the front polarizer, HAZE(25%)

(1024×768)

Backlight Ass’y

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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

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 °C Max, and no condensation of water.

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Wet Bulb Temperature [℃℃℃℃]

Values

Min. Max.

-0.3 0

-20 10 10

90% 80%

4.0 50 60 90 90

Units Notes

Vdc

°C °C

%RH %RH

Humidity[(%)RH]

At 25 ± 5°C

1 1 1 1

Storage

Operation

-20

Ver. 0.0 Oct. 17, 2001

20 30 40 50

Dry Bulb Temperature [℃℃℃℃]

60 70 800

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Liquid Crystal Display

Product Specification

3. Electrical Specifications 3-1. Electrical Characteristics

The LP133X9-A2LG 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 Voltage Power Supply Input Current Differential Impedance Power Consumption

LAMP :

Operating Voltage Operating Current Established Starting Voltage

at 25 °C at 0 °C

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Operating Frequency Discharge Stabilization Time Power Consumption Life Time

Note : The design of the inverter must have specifications for the lamp in LCD Assembly.

The performance of the Lamp in LCM, for example life time or brightness, is extremely influenced by the characteristics of the DC-AC inverter. So all the parameters of an inverter should be carefully designed so as not to produce too much leakage current from high-voltage output of the inverter. When you design or order the inverter, please make sure unwanted lighting caused by the mismatch of the lamp and the inverter(no lighting, flicker, etc) never occurs. When you confirm it, the LCD Assembly should be operated in the same condition as installed in you instrument.

1. The specified current and power consumption are under the VCC=3.3V, 25°C,fV=60Hz condition whereas mosaic pattern is displayed and fVis the frame frequency.

2. This impedance value is needed to proper display and measured from LVDS TXto the mating connector.

3. The variance of the voltage is ± 10%.

4. The voltage above VSshould be applied to the lamps for more than 1 second for start-up. Otherwise, the lamps may not be turned on. The used lamp current is the lamp typical current.

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I V

Min. Typ. Max.

3.0

630

3.0

10,000

Values

3.3

0.240

100

0.8

675

5.0

3.4

3.6

0.300

110

1.2

780

6.0

1140 1370

3.9

Units Notes

Vdc

ohm

Watts

RMS

kHz

Minutes

Watts

Hrs

1 2 1

3 4

5 6 7 8

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Liquid Crystal Display

Product Specification

5. The output of the inverter must have symmetrical(negative and positive) voltage waveform and symmetrical current waveform.(Unsymmetrical ratio is less than 10%) Please do not use the inverter which has unsymmetrical voltage and unsymmetrical 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.

6. Let’s define 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%.

7. The lamp power consumption shown above does not include loss of external inverter. The used lamp current is the lamp typical current.

8. The life is determined as the time at which brightness of the lamp is 50% compared to that of initial value at the typical lamp current on condition of continuous operating at 25 ± 2°C.

※ 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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Liquid Crystal Display

Product Specification

3-2. Interface Connections

Interface chip must be used FlatLink, part No. THC63LVDM63A(Transmitter), THC63LVDF64A(Receiver)

made by Thine Microsystems, Inc.

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-H13 manufactured by LG CABLE.

The pin configuration for the connector is shown in the table below.

Table 3. MODULE CONNECTOR PIN CONFIGURATION(LVDS)

Pin Symbol Description Notes

1 2 3 4 5 6 7 8

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

The backlight interface connector is a model BHSR-02VS-1, manufactured by JST. The mating connector

part number is SM02B-BHSS-1 or equivalent.

The pin configuration for the connector is shown in the table below.

Vcc

Vcc GND GND

A1M

A1P

GND

A2M

A2P

GND

A3M

A4P

GND

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CLKM

CLKP

GND

NC GND GND

Power(3.3V) Power(3.3V)

Ground

Ground Differential Signal Differential Signal

Ground No Connection No Connection

Ground Ground

1. Interface chips

1.1 LCD : LPS4S102S6LM(LCD Controller)

including LVDS(SAMSUNG) Receiver (LVD4105X)

1.2 System : THC63LVDM63A

*Pin to Pin compatible with THINE LVDS

2. Connector

2.1 LCD : GT122-20P-H13 with LG CABLE

2.2 Mating : F1-SE20M-HF with JAE or compatible

2.3 Connector pin arrangement

or equivalent.

Table 4. BACKLIGHT CONNECTOR PIN CONFIGURATION

Pin Symbol Description Notes

1 2

Notes : 1. The high voltage side terminal is colored pink. The low voltage side terminal is green

Ver. 0.0 Oct. 17, 2001

Power supply for lamp

(High voltage side)

Power supply for lamp

(Low voltage side)

1 1

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LG LP-141X11-A2 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual