LG LM-230W01-A2P3 Service manual

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LM230W01

Liquid Crystal Display

Product Specification

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LM230W01

Liquid Crystal Display

Product Specification

Contents

PageITEMNo

COVER CONTENTS RECORD OF REVISIONS GENERAL DESCRIPTION1 ABSOLUTE MAXIMUM RATINGS2

ELECTRICAL SPECIFICATIONS3 ELECTRICAL CHARACTREISTICS 3-1

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

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POWER SEQUENCE 3-6 OPTICAL SFECIFICATIONS4 MECHANICAL CHARACTERISTICS5 RELIABLITY6

1 2 3 4 5

6 6

8 11 12 13 14 15 19 22

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INTERNATIONAL STANDARDS7 SAFETY 7-1 EMC 7-2 PACKING8 DESIGNATION OF LOT MARK 8-1 PACKING FORM 8-2

23 23 23 24 24 24

25PRECAUTIONS9 27APPENDIX

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LM230W01

Liquid Crystal Display

Product Specification

RECORD OF REVISIONS

DESCRIPTIONPageRevision DateRevision No

First Draft (Preliminary)-JAN.17.20030.0 the White color coordination change ( TBD,TBD →0.314,0.331)15FEB.06.20031.0

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LM230W01

Liquid Crystal Display

Product Specification

1. General Description

The LM230W01 LCD is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent Lamp(CCFL) back light system. The matrix employs a-Si Thin Film Transistor as the active element. It is a tra nsmissive type display operating in the normally black mode. This TFT-LCD has a 23.0 inch diagonally measu red active display area with WUXGA resolution(1920 vertical by 1200 horizontal pixel array). Each pixel is divid ed into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale or the lumina nce of the sub-pixel color is determined with a 8-bit gray scale signal for each dot, thus, presenting a palette of more than 16,777,216 colors. The LM230W01 has been designed to apply the TMDS erface method to enables a simple and low-cost implementation in both the host and monitor.

TM

(Transition Minimized differential Signaling) as the int

RGB (24BIT)

CLK

RGB (24B IT)

VCC, VDD

V0~ V1 7

SOURCE (Left)

SOURCE (Right)

RXC +/RX0 +/RX1 +/-

(2 0 P IN)

USER C ON

POW ER C ON

RX2 +/-

H sync, Vsyn c

(15P IN)

TM D S

TM D STM D S

Receiver

ReceiverR eceiver

IN P U T 1 8V

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PW R _O N

General Features

RGB D ATA

CLK

Hsync Vsyn c

Tim ing

Tim ingTim ing

C o n t r o lle r

C o n t r o lle rC o n t r o lle r

DC/DC

DC/DCDC/DC

C onverter

C onverterC onverter

23.0 inches(58.4cm) diagonalActive Screen Size

550.0(H) x 360.5(V) x 25.0(D) mm(Typ.)Outline Dimension

495.36[mm] × 309.6[mm]Active Area

0.258 mm x 0.258mmPixel Pitch 1920 horiz. By 1200 vert. Pixels RGB stripes arrangementPixel Format 8-bit, 16,777,216 colorsColor Depth

200 cd/m Total 47 Watt(Typ.)Power Consumption

4,500 g (typ.)Weight

K

L

C

PANEL

G A

VC C

T

VG H ,VG L

GAMMA

GAMMAGAMMA

2

(Typ.)Luminance, White

E

PANELPANEL

1920 X 1200

1920 X 12001920 X 1200

Surface Treatment

Ver. 1.0 FEB . 06 . 2003

Transmissive mode, normally blackDisplay Operating Mode Hard coating(3H)

Anti-glare treatment of the front polarizer, TMDS (Hsync/DE)Interface

6 CCFL’s(Cold Cathode Fluorescent Lamp)LAMP

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Liquid Crystal Display

Product Specification

2. Absolute Maximum Ratin gs

The following are maximum values which, if exceeded, may cause operation or damage to the unit.

Table 1. ABSOLUTE MAXIMUM RATINGS

LM230W01

Parameter Notes

Power Input Voltage Operating Temperature Storage Temperature Operating Ambient Humidit

y 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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Symbol

OP

ST

OP

ST

Values

MaxMin

500T 60-20H

Units

°C °C

at 25 ± 5°CVcc21-0.3Vcc

1 1

1%RH9010H

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Liquid Crystal Display

Product Specification

3. Electrical Specifications 3-1. Electrical Characteristics

The LM230W01 requires two power inputs. One input is employed to power the LCD electronics and to d rive the voltages to drive the TFT array and liquid crystal. And the second input which powers the CCFL, i s typically generated by an inverter. The inverter is an external unit to the LCD.

Table 2. ELECTRICAL CHARACTERISTICS

LM230W01

Parameter Symbol

MODULE :

Inrush Current

LAMP : Operating Voltage Operating Current

at 25 °C

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at 0 °C Operating Frequency Power Consumption

Notes : 1. The input current shall be measured at V clock frequency of 156MHz under mosaic pattern(8x6) (typ).

2. The measuring condition The duration of rush current is about 20ms, and rising time of Power input is 1ms.

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

4. Operating voltage is measured at 25°C. The variance of the voltage is ±10%.

5. The output voltage at the transformer in the inverter must be high considering to the loss of the ballast capacitor in the inverter. The voltage above V than 1 second for start-up. Otherwise, the lamps may not be turned on.

6. 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. The lamp power consumption shown above does not include loss of external inverter at 25°C. The used lamp current is the lamp typical current.

Rush

BL

BL BL

of 18.0Vdc at 25℃, refresh rate of 60Hz, and pixel

CC

Values

MaxTypMin

Vdc19.018.017.0Vcc Power Supply Input Voltage

1090(2.5mA)875(7.5mA)830(9mA)V

1400-1960--

should be applied to the lamps for more

S

V V

RMS

mA9.07.52.5I

RMS RMS

NotesUnit

1A0.650.45-Icc Power Supply Input Current 1Watt11.78.1-Pc Power Consumption

2A3--I

3V

4Vs Established Starting Voltage

5kHz605040F 6Watt45.141.0-P 7min3--Ts Discharge Stabilization Time 8Hrs30,000 Life Time

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Liquid Crystal Display

LM230W01

Product Specification

8. Let’s define the brightness of the lamp after being lighted for 5 minutes as 100%. T The used lamp current is the lamp typical current.

9. The life time is defined as the time at which brightness of lamp is 50% compare to that of initial

value at the typical lamp current on condition of continuous operating at 25±2°C.

Note. Do not attach a conducting tape to 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.

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

S

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. Requirements for a system inverter design, which is intended to have a better display performance, a better power efficiency and a more reliable lamp. It shall help increase the lamp lifetime and reduce its leakage current.

a. The asymmetry rate of the inverter current and voltage waveform should be 10% below; b. The distortion rate of the current and voltage waveform should be within √2 ±10%; c. The ideal sine current and voltage waveform shall be symmetric in positive and negative polarities.

* Asymmetry rate = | I

* Distortion rate = I

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– I –p | / I

p

(or I –p) / I

p

rms

* 100%

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Liquid Crystal Display

LM230W01

Product Specification

3-2. Interface Connections

This LCD employs three kinds of interface connections. A 20 pin connector is used for TMDS signals from t he host computer. A 15-pin connector is used for LCD module power and LCM controls signal from external monitor control circuits. And six connectors, two pin connector, are used for the integral backlight system.

3-2-1. Sig nal Interface

The TMDS signal interface connector is FI-XL20S-HF by JAE. The pin configuration for the 20 pin connector is shown in the table below.

Table 3 20PIN CONNECTOR (CNC6) PIN CONFIGURATION

DescriptionSymbolPinDescriptionSymbolPin

GND Shield for TMDS channel 0SHLD011Ground1

TX0+12GroundGND2

TX0-13GroundGND3

TXC+15Shield for TMDS channel 2SHLD25

TX2+6

TX2-7

TX1+9

TX1-10

TMDS positive differential output (Channel 2)

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TMDS negative differential output (Channel 2)

TMDS positive differential output (Channel 1)

TMDS negative differential output (Channel 1)

TXC-16

TMDS positive differential output (Channel 0)

TMDS negative differential output (Channel 0)

Shield for TMDS channel CSHLDC14GroundGND4 TMDS positive differential output

(Channel C) TMDS negative differential output

(Channel C)

GroundGND17

GroundGND18Shield for TMDS channel 1SHLD18

GroundGND19

GroundGND20

1. Interface chips

1.1 LCD : PTFP 403 PZP (TI)

2. Connector

2.1 LCD : FI-XL20S-HF

2.2 Mating : FI-XL20H or compatible

2.3 Connector pin arrangement

Notes: 1. All shield pins and GND(ground) pin should be connected together and should also be connected to the LCD’s metal frame.

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CNC6

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Liquid Crystal Display

LM230W01

Product Specification

3-2-2. Power In t erf ace

A 15 pin connector (CNC7) for external monitor control circuits, is a model 53261 manufactured by Molex. The mating connector part number is 51021 or its equivalent. The pin configuration for this connector is sho wn in the table below.

Table 4 15 PIN CONNECTOR (CNC7) PIN CONFIGURATION

1 2 3 4 5 6 7 8 9

10

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11 12 13 14 15

Symbol

GND GND

PWR_ON

GND

Vcc Vcc Vcc Vcc

GND DDC_CLK DDC_DAT

GND

HS_OUT VS_OUT

GND

Description Ground Ground Power ON control signal input Ground LCM power supply, +18V ±5% LCM power supply, +18V ±5% LCM power supply, +18V ±5% LCM power supply, +18V ±5% Ground DDC clock line out DDC data line out Ground Hsync Output Vsync Output Ground

5V(H:90%,L:10%)

Notes

Connector pin arrangement

Notes: 1. All GND(ground) pins should be connected together and should also be connected to the LCD’s metal frame.

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CNC7

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LG LM-230W01-A2P3 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual