LG LM-230WF1-TLA3 Service manual

SPECIFICATION

( ) Preliminary Specification
(◆) Final Specification

LM230WF1

Liquid Crystal Display

Product Specification

FOR

APPROVAL

23” Full HD TFT LCDTitle

BUYER LGE

MODEL

www.jxlcd.com

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SIGNATURE DATE

/

/

/

SUPPLIER LG Display Co., Ltd.

*MODEL LM230WF1

SUFFIX TLA3

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

K.G. Park / G.Manager

REVIEWED BY

S.J. So / Manager [C]

S.Y. An / Manager [M]

H.S. Lee / Manager [P]

PREPARED BY

S.M. Lee / Engineer

DATE

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

Ver. 1.0 Jan., 14, 2009

Product Engineering Dept.

LG Display Co., Ltd

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Product Specification

Contents

LM230WF1

Liquid Crystal Display

No

ITEM

COVER
CONTENTS
RECORD OF REVISIONS
GENERAL DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL SPECIFICATIONS

1)

2)

3)

4)

5)

6)

7)

8)

ELECTRICAL CHARACTERISTICS
INTERFACE CONNECTIONS

LVDS characteristics
SIGNAL TIMING SPECIFICATIONS

SIGNAL TIMING WAVEFORMS
COLOR INPUT DATA REFERNECE
POWER SEQUENCE
POWER DIP CONDITION
OPTICAL SPECIFICATIONS

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MECHANICAL CHARACTERIST ICS

Page

1
2
3
41
52
63
6

9
12
15

16
17
18
19
204
255

RELIABILITY
INTERNATIONAL STANDARDS

1)

2)

1)

2)

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SAFETY
EMC
PACKING
DESIGNATION OF LOT MARK
PACKING FORM

286
297
29
29
308
30
30
31PRECAUTIONS9
31MOUNTING PRECAUTIONS1)
31OPERATING PRECAUTIONS2)
32ELECTROSTATIC DISCHARGE CONTROL3)
32PRECAUTIONS FOR STRONG LIGHT EXPOSURE4)
32STROAGE5)
32HANDLING PRECAUTIONS FOR PROTECTION FILM6)

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Product Specification

Record of revisions

Revision No DescriptionDate Page

LM230WF1

Liquid Crystal Display

Ver. 0.1

Ver, 1.0

Dec, 04, 2008

Jan, 14, 2008

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First Draft, Preliminary Specifications

Final Specifications

Ver. 1.0 Jan., 14, 2009

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LM230WF1

Liquid Crystal Display

Product Specification

1. General description

LM230WF1-TLA3 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. It has a 23 inch diagonally measured active
display area with FHD resolution (1080 vertical by 1920 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 8-bit gray scale signal for each dot, thus, presenting a palette of more than
16,7M colors with Advanced-FRC(Frame Rate Control). It has been designed to apply the interface method
that enables low power, high speed, low EMI. FPD Link or compatible must be used as a LVDS(Low Voltage
Differential Signaling) chip. It is intended to support applications where thin thickness, wide viewing angle, low
power are critical factors and graphic displays are important. In combination with the vertical arrangement of
the sub-pixels, the LM230WF1-TLA3 characteristics provide an excellent flat panel display for office automation
products such as monitors.

FIG. 1 Block diagram

LVDS

pair #1

LVDS

pair #2

CN1

(30pin)

+5V
VLCD

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Power circuit

Timing

controller

block

V

Lamp

V

Lamp

RGB

CN2, 3 (2pin)
CN4, 5 (2pin)

Source driver circuit

S1

G1

TFT-LCD Panel

(1920×RGB×1080 pixels)

G1080

Backlight assembly (4 CCFLs)

General features

Active screen size 23 inches(58.42cm) diagonal(Aspect ratio 16:9)
Outline Dimension 533.2(H) x 312.0(V) x 16.5(D) mm(Typ.)
Pixel Pitch 0.265 mm x 0.265 mm
Pixel Format 1920 horiz. By 1080 vert. Pixels RGB stripes arrangement

S1920

Interface LVDS 2Port
Color depth 16.7M colors
Luminance, white 300 cd/m
Viewing Angle (CR>10) R/L 170(Typ.), U/D 160(Typ.)
Power Consumption
Weight 2600g(typ.)
Display operating mode Transmissive mode, normally White
Surface treatments

Ver. 1.0 Jan., 14, 2009

Total 30W (Typ.), (4.5W@V

Hard coating(3H) & Anti-Glare treatment of the front polarizer

2

( Center 1Point, typ)

, 25.5W@IBL=7.5mA)

LCD

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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

LM230WF1

Liquid Crystal Display

Parameter Notes

Power Supply 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.

FIG. 2 Temperature and relative humidity

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Wet Bulb
Temperature [℃]

10

0

Symbol

LCD

OP

ST

OP

ST

50

40

30

20

Values

MaxMin

90%

60

60%

40%

10%

Units

°C500T
°C60-20T

%RH9010H
%RH9010H

Storage

Operation

Humidity

[(%)RH]

At 25℃Vdc+6.0-0.3V

1

10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [℃]

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LM230WF1

Liquid Crystal Display

Product Specification

3. Electrical specifications
3-1. Electrical characteristics

It requires two power inputs. One is employed to power the LCD electronics and to drive the
TFT array and liquid crystal. The second input power for the CCFL/Backlight, is typically
generated by an inverter. The inverter is an external unit to the LCDs.

Table 2. Electrical characteristi cs

Parameter Symbol

MODULE :
Power Supply Input Voltage
Permissive Power Input Ripple

Power Supply Input Current

Power Consumption
Inrush current

Note :

1. The specified current and power consumption are

under the V
whereas mosaic pattern(8 x 6) is displayed and f

2. The current is specified at the maximum current pattern.

3. Permissive power ripple should be measured under VCC=5.0V, 25°C, f

condition and At that time, we recommend the bandwidth configuration of oscilloscope
is to be under 20MHz.

4. The duration of rush current is about 2ms and rising time of power Input is 500us ± 20%.

FIG.3 pattern for Electrical characteristics

LCD=5.0V, 25 ± 2°C,f

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LCD

LCD

LCD-MOSAIC

I

LCD-BLACK

LCD

RUSH

=60Hz condition

V

Values

MaxTypMin

is the frame frequency.

V

Vdc5.55.04.5V

(frame frequency)=Max

V

NotesUnit

3V0.4--V
1mA1100900-I
2mA12501050­1Watt5.54.5-P
4A3.0--I

power consumption measurement

White : 255Gray
Black : 0Gray

Mosaic Pattern(8 x 6)

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power input ripple

Full Black Pattern

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Product Specification

Table 3. Electrical characteristi cs

LM230WF1

Liquid Crystal Display

Parameter Symbol

LAMP :

Operating Voltage
Operating Current

at 25 °C

at 0 °C
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 brightn ess, 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, pl ease make sure unwanted lighting cause d 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.

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V

BL

I

BL

f

BL

T

S

P

BL

50000

Values

MaxTypMin

1000 (3.0mA)850 (7.5mA)830(8.0mA)

8.07.53.0

1500
1800

706040

3

28.125.5

V
V

RMS

RMS

RMS
RMS

NotesUnit

1, 2V

1mA

1, 3VsEstablished Starting Voltage

4kHz

1, 5Min

6Watt

1, 7Hrs

※ 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.

1. Specified values are for a single lamp.
It is only reference voltage in LCM or System.

2. Operating voltage is measured at 25 ± 2°C and follows as below condition,

1) ± 10%＠typical operating voltage is based on single lamp.

2) ± 20%＠typical operating vol tage is based on system & test equipment tolerance.

3. The voltage above V

(Inverter open voltage must be more than lamp starting voltage.)
Otherwise, the lamps may not be turned on. The used lamp current is the lamp typical current.

4. 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.

5. 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%.

6. The lamp power consumption shown above does not include loss of external i n verter.
The used lamp current is the lamp typical current. (P

7. 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.

Ver. 1.0 Jan., 14, 2009

should be applied to the lamps for more than 1 second for start-up.

S

= VBLx IBLx N

BL

Lamp

)

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Liquid Crystal Display

Product Specification

Note :

8. 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 uns ymmetrical voltage and unsymmetrical
current and spike wave. Requirements for a system inverter design, which is intended to
have a better display performance, a better power efficien cy 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

x 100%

LM230WF1

I -p

9. The inverter which is combined with this LCM, is highly recommended to connect
coupling(ballast) condenser at the high voltage output side. When you use the inverter
which has not coupling(ballast) condenser, it may cause abnormal lamp lighting because
of biased mercury as time goes.

10.In case of edgy type back light with over 4 parallel lamps, input current and voltage
wave form should be synchronized

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* Distortion rate

I

(or I –p) / I

p

rms

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Product Specification

3-2. Interface connections

LCD connector(CN1) : GT103-30S-H23 (LSC) , IS100-L30B-C23 (UJU)
Mating connector : FI-X30H and FI-X30HL (JAE) or Equivalent

Table 4. Module connector(CN1) pin configuration

LM230WF1

Liquid Crystal Display

Pin No

1
2
3
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

Symbol Description

RXO0­RXO0+
RXO1­RXO1+
RXO2­RXO2+
GND
RXOC­RXOC+
RXO3­RXO3+
RXE0-

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RXE0+
GND
RXE1­RXE1+
GND
RXE2­RXE2+
RXEC­RXEC+
RXE3­RXE3+
GND
NC
NC
NC
V

LCD

VLCD
VLCD

Minus signal of 1st channel 0 (LVDS)
Plus signal of 1st channel 0 (LVDS)
Minus signal of 1st channel 1 (LVDS)
Plus signal of 1st channel 1 (LVDS)
Minus signal of 1st channel 2 (LVDS)
Plus signal of 1st channel 2 (LVDS)
Ground
Minus signal of 1st clock channel (LVDS)
Plus signal of 1st clock channel (LVDS)
Minus signal of 1st channel 3 (LVDS)
Plus signal of 1st channel 3 (LVDS)
Minus signal of 2nd channel 0 (LVDS)
Plus signal of 2nd channel 0 (LVDS)
Ground
Minus signal of 2nd channel 1 (LVDS)
Plus signal of 2nd channel 1 (LVDS)
Ground
Minus signal of 2nd channel 2 (LVDS)
Plus signal of 2nd channel 2 (LVDS)
Minus signal of 2nd clock channel (LVDS)
Plus signal of 2nd clock chan nel (LVD S)
Minus signal of 2nd channel 3 (LVDS)
Plus signal of 2nd channel 3 (LVDS)
Ground
No Connection (For LCD internal use only.)
No Connection (For LCD internal use only.)
No Connection (For LCD internal use only.)
Power Supply (5.0V)
Power Supply (5.0V)
Power Supply (5.0V)

First Pixel data

Second Pixel data

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FIG. 4 Connector diagram

#1 #30

1’st signal pairs

LM230WF1

Liquid Crystal Display

Product Specification

GT103-30S-H23 (LSC)

2’nd signal pairs

Power(+5V)

Rear view of LCM

Note:

1. NC: No Connection.

2. All GND(ground) pins should be connected together and to Vss which should also
be connected to the LCD’s metal frame.

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3. All V

4. Input Level of LVDS signal is based on the IEA 664 Standard.

(power input) pins should be connected together.

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LCD

Ver. 1.0 Jan., 14, 2009

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