SAMSUNG LTA320WT-L05 Specification

Approval

Approval

Customer : Pusheng DATE : 08.Jan.2008

SAMSUNG TFT--

SAMSUNG TFT

SAMSUNG TFT-LCD

MODEL

MODEL

MODEL : LTA320WT-L05

Any Modification of Specification is not allowed without SEC's Permission.

NOTE :

Customer’’

Customer

LCD

LCD

: LTA320WT--

: LTA320WT

s Approval

s Approval

L05

L05

APPROVAED BY

DATE

08.Jan.2008

MODEL

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SIGNATURE

Samsung Electronics Co . , LTD.

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DATE

LCD Business

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PREPARED BY

Yongsun KIM

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DATE

08.Jan.2008

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Contents

Revision History -------------------------------------------------------------------------------------------- (3)

General Description --------------------------------------------------------------------------------------- (4)

General Information --------------------------------------------------------------------------------------- (4)

1. Absolute Maximum Ratings -------------------------------------------------------------------------- (5)

2. Optical Characteristics --------------------------------------------------------------------------------- (7)

3. Electrical Characteristics ----------------------------------------------------------------------------- (10)

3.1 TFT LCD Module

3.2 Back Light Unit

3.3 Inverter Input & Specification

4. Block Diagram ------------------------------------------------------------------------------------------- (13)

5. Input Terminal Pin Assignment --------------------------------------------------------------------- (14)

5.1 Input Signal & Power

5.2 Inverter Input Pin Configuration

5.3 Inverter Input Power Sequence

5.4 LVDS Interface

5.5 Input Signals, Basic Display Colors and Gray Scale of Each Color

6. Interface Timing ----------------------------------------------------------------------------------------- (19)

6.1 Timing Parameters (DE only mode)

6.2 Timing Diagrams of interface Signal (DE only mode)

6.3 Power ON/OFF Sequence

7. Outline Dimension -------------------------------------------------------------------------------------- (22)

8. Reliability Test---------------------------------------------------------------------------------------------(24)

9. Packing --------------------------------------------------------------------------------------------------- (25)

10. Marking & Others ------------------------------------------------------------------------------------- (26)

11. General Precaution ----------------------------------------------------------------------------------- (27)

11.1 Handling

11.2 Storage

11.3 Operation

11.4 Operation Condition Guide

11.5 Others

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Revision History

Date

Feb

2,

2007

Apr

11,

2007

Rev.

No

SummaryPage

First issuedall05.000

Version revisionall06.000

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General Description

Description

LTA320WT-L05 is a color active matrix liquid crystal display (LCD) that uses amorphous
silicon TFT(Thin Film Transistor) as switching components. This model is composed of a
TFT LCD panel, a driver circuit and a back light unit. The resolution of a 32.0” is
1366 x 768 and this model can display up to 16.7 million colors with wide viewing angle of
89° or higher in all directions. This panel is intended to support applications to provide a
excellent performance for Flat Panel Display such as Home-alone Multimedia TFT-LCD
TV and High Definition TV.

Features

 RoHS compliance (Pb-free)
 High contrast & aperture ratio with wide color gamut
 SPVA( Super Patterned Vertical Align) mode
 Wide viewing angle (±178°)
 High speed response
 HD resolution (16:9)
 Low Power consumption
 Direct Type 12 CCFLs (Cold Cathode Fluorescent Lamp)
 DE(Data Enable) mode
 LVDS (Low Voltage Differential Signaling) interface (1pixel/clock)

General Information

Module Size

760.0(H

) x 450.0(V

TYP

48.0(D

500 (Typ.)Luminance of White

MAX

UnitSpecificationItems

)

TYP

)

mm

g7,500 (max)Weight

mm0.51075(H) x 0.51075(W)Pixel Pitch

mm697.6845(H) x 392.256(V)Active Display Area

-Haze 44% , Hard-coating (3H)Surface Treatment

colors8 bit - 16.7MDisplay Colors

pixel1366 x 768Number of Pixels

-RGB vertical stripePixel Arrangement

-Normally BlackDisplay Mode

cd/m

2

Note

±

1.0mm

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1. Absolute Maximum Ratings

If the condition exceeds maximum ratings, it can cause malfunction or unrecoverable
damage to the device.

NoteUnitMax.Min.SymbolItem

Power Supply Voltage

Storage temperature

Glass surface

Center

DD

STG

OPR

temperature

△

(Operation)

T. Uniformity

Shock ( non - operating )

Vibration ( non - operating )

Note (1) Ta= 25 ±2 °C

(2) Temperature and relative humidity range are shown in the figure below.

a. 90 % RH Max. (Ta ≤39°C)
b. Relative Humidity is 90% or less. (Ta > 39°C)

c. No condensation
(3) 11ms, sine wave, one time for ±X, ±Y, ±Z axis
(4) 10-300 Hz, Sweep rate 10min, 30min for X,Y,Z axis

T

nop

nop

60-20T

500T

10-

50

℃

℃

℃

(1)V5.5GND-0.5V

(2)

(2),(5)

(3)G-S

(4)G1.5-V

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Fig. Temperature and Relative humidity range

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(5) Definition of test point

5mm

5mm

1 2

5

○

LCD Module (Active)

MAX

4

| )

3

△

T should be less than 10 ℃(△T = | T

T

: Temperature of the center of the glass surface (Test point 5)

OPR

OPR

– T

T1~ T4 : Temperature of each edge of the glass surface

T

: The highest temperature of the glass surface

MAX

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2. Optical Characteristics

The optical characteristics should be measured in a dark room or equivalent.
Measuring equipment :

TOPCON RD-80S,TOPCON SR-3, ELDIM EZ-Contrast

Contrast Ratio

(Center of screen)

Response

Time

Luminance of White

(Center of screen)

Color

Chromaticity

(CIE 1931)

G-to-G

(Avg)

Red

Green

Blue

White

(Ta = 25 ±2°C, VDD=5V, fv= 60Hz, f

Tg

L

Rx

Normal

θL,R=0

θU,D=0

Viewing

Angle

TYP.

-0.03

0.642

0.330Ry

0.283Gx

0.602Gy

0.145Bx

0.062By

0.290Wx

0.300Wy

DCLK

-2,0001,500C/R

168-

-500450Y

TYP.

+0.03

=75MHz, IL= 8 mArms)

NoteUnitMax.Typ.Min.ConditionSymbolItem

(1)

SR-3

(3)

RD-80S

cd/m

%-72--Color Gamut

2

(4)

SR-3

(5),(6)

SR-3

(5)

SR-3

Hor.

Viewing

Angle

Ver.

Brightness Uniformity

(9 Points)

θ

L

R

U

D

uni

C/R≥10

-8975

-8975θ
Degree

-8975θ

-8975θ

- Test Equipment Setup

The measurement should be executed in a stable, windless and dark room between
40min and 60min after lighting the back light at the given temperature for stabilization
of the back light. This should be measured in the center of screen.

Inverter=62.5 (kHz ±2.5kHz, Dimming : Max )
Environment condition : Ta = 25 ±2 °C

K-10000--Color Temperature

%25--B

(5)

SR-3

(6)

EZ-Contrast

(2)

SR-3

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SR-3

G

min

RD-80S

Field Photo detector

1

2

Photo detector

°

°

Field

TFT - LCD Module

- Definition of test point

228 683 1138

128

384

⑨⑨⑨⑨

⑥⑥⑥⑥

The center of the screen

⑧⑧⑧⑧

⑦⑦⑦⑦

⑤⑤⑤⑤ ④④④④

SR-3 : 50
RD-80S : 50

EZ-Contrast :0

LCD Panel

Active Area

Test Point

㎝

㎝

㎝

640

Note (1) Definition of Contrast Ratio (C/R)

: Ratio of gray max (Gmax) & gray min (Gmin) at the center point ⑤of the panel

G

max

=

Gmax : Luminance with all pixels white
Gmin : Luminance with all pixels black

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Note (2) Definition of 9 points brightness uniformity ( Test pattern : Full White )

B

−

max

B B

Buni

= ∗

Bmax : Maximum brightness
Bmin : Minimum brightness

Note (3) Definition of Response time : Sum of Tr, Tf

( max min)

100

Display data

Optical Instruments

Response

※ G-to-G : Average response time between Gray to gray (scale)

Note (4) Definition of Luminance of White : Luminance of white at center point

Note (5) Definition of Color Chromaticity (CIE 1931)

Color coordinate of Red, Green, Blue & White at center point

Note (6) Definition of Viewing Angle

: Viewing angle range (C/R ≥10)

100%

90%

10%

0%

Black (data

off)

T

R

White (data on)

Black (data off)

T

F

⑤

TIME

⑤

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3. Electrical Characteristics

3.1 TFT LCD Module

The connector for display data & timing signal should be connected.

Ta = 25°C ± 2 °C

NoteUnitMax.Typ.Min.SymbolItem

Voltage of Power Supply

Current

(a) Black

of Power

DD

I

DD

Supply

Vsync Frequency

Hsync Frequency

Main Frequency

Rush Current

V

H

DCLK

RUSH

Note (1) The ripple voltage should be controlled under 10% of VDD.

(2) fV=60Hz, f

DCLK

= 75MHz, VDD= 5.0V, DC Current.

(3) Power dissipation check pattern (LCD Module only)

a) Black Pattern b) White Pattern c) N-Pattern

(1)V5.55.04.5V

mA-1000-

mA-1400-(b) White

(2),(3)

mA22001500-(c) N-Pattern

Hz666048f

kHz534844f

MHz827565f

(4)A4--I

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(4) Measurement Conditions

100%

90%

10%
GND

Rush Current I

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3.2 Back Light Unit

The back light unit contains 12 direct-lighting type CCFLs ( Cold Cathode Fluorescent
Lamp ). The characteristics of lamps are shown in the following tables.

Ta=25 ± 2°C

Socket

HOT 1

HOT 2

Inverter

HOT 11

HOT 12

COLD 1

COLD 2

LCD

Module

COLD 11

COLD 12

NoteUnitMax.Typ.Min.SymbolItem

(1)Hour-50,000-HrOperating Life Time

Note (1) It is defined as the time to take until the brightness reduces to 50% of its original value.

[Operating condition : Ta = 25±2℃, IL= 7.0mA , For single lamp only. ]

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3.3 Inverter Input Condition & Specification

ConditionsSymbolItems

Specifications

NoteUnit

Max.Typ.Min.

Input

Voltage

Input

Current

Lamp

Current

Frequency

Backlight

On/Off

Dimming

Control

I

RUSH

LAMP

V

O

DIM

Vin=24.0V

Vdim=3.3V

V252423-Vin

mArms8.58.07.5Vdim=3.3 VI

kHz6562.560Vin=24.0 VF

5.25-2.4Vin=24.0 VON

0.8-0Vin=24.0 VOFF

--3.3Max Lum

0--Min. Lum

Ta=25

Initial Turn-onAdc7--

Steady stateAdc5.54.1-

After 2 Hours

±2 °C

Warm-Up

@Vin=24V

-V

-V

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4. Block Diagram

CONTROL PCB

CONTROL PCB

CONTROL PCBCONTROL PCB

USER CONNECTOR

USER CONNECTOR TIMING CONTROLLER

USER CONNECTORUSER CONNECTOR

LDO (STEP DOWN)

LDO (STEP DOWN)

LDO (STEP DOWN)LDO (STEP DOWN)

DC/DC CONVERTOR

DC/DC CONVERTOR

DC/DC CONVERTORDC/DC CONVERTOR

TIMING CONTROLLER

TIMING CONTROLLERTIMING CONTROLLER

MEMORY

MEMORY

MEMORYMEMORY

FPC

FPC

FPCFPC

SOURCE

SOURCE

SOURCESOURCE

PCB

PCB

PCBPCB

DATA DRIVER

DATA DRIVER

DATA DRIVERDATA DRIVER

IC

IC

ICIC

LTA320WT

LTA320WT

LTA320WT LTA320WT

PANEL

PANEL

PANELPANEL

DATA

DATA

DATADATA

Power

Power

PowerPower

GAMMA

GAMMA----GENERATOR

GENERATOR

GAMMAGAMMA

GENERATORGENERATOR

Vcom

Vcom----GENERATOR

GENERATOR

VcomVcom

GENERATORGENERATOR

GATE DRIVER

GATE DRIVER

GATE DRIVER GATE DRIVER

IC

IC

ICIC

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5. Input Terminal Pin Assignment

5.1. Input Signal & Power Connector : FI-E30S (JAE)

DescriptionPIN No.DescriptionPIN No.

GND16No Connection (Note1)1

RxIN3-17No Connection (Note1)2

RxIN3+18No Connection (Note1)3

GND19GND4

GND20RxIN0-5

LVDS OPTION (Note 2)21RxIN0+6

No Connection (Note1)22GND7

GND23RxIN1-8

GND24RxIN1+9

GND25GND10

Vin26RxIN2-11

Vin27RxIN2+12

Vin28GND13

Vin29RxCLK-14

Vin30RxCLK+15

Note1) No Connection: This PINS are only used for SAMSUNG internal using.
Note2) LVDS OPTION : If this PIN is HIGH (3.3 V) →Normal LVDS format

LOW (GND) →JEIDA LVDS format

SEQUENCE : On = VDD(T1) ≥LVDS Option ≥Interface Signal(T2)

OFF = Interface Signal(T3) ≥LVDS Option ≥V

DD

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Note(1) Pin number starts from Right side

PCB

▼

Pin No. 1 Pin No. 30

#1 #30

#1

Fig. Connector diagram

a. Power GND pins should be connected to the LCD’s metal chassis.
b. All power input pins should be connected together.
c. All NC pin should be separated from other signal or power.

#30

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5.2. Inverter Input Pin Configuration

Pin Configuration(FUNCTION)Pin No.

Backlight On /Off [ON:2.4 - 5 V, OFF: 0 - 0.8 V]12

Dimming Control [0V:Min, 3.3V:Max]13

Connector : S14B-PHA-SM-TB(LF) (JST)

24 V1

24 V2

24 V3

24 V4

24 V5

GND6

GND7

GND8

GND9

GND10

No Connection11

5.3. Inverter Input Power Sequence

0.9 Vin

Vin (24V)

Dimming Control
( 0 ~ 3.3 V )

0.5sec [Min]

Backlight On/Off

0.1 Vin

20msec [Min]

0.5sec [Min]

No Connection14

0.9 Vin

0.5sec [Min]

2.4V(On level)

0.8V(Off level)

0.1sec [Min]

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5.4 LVDS Interface

- LVDS Receiver : Tcon (merged)

- Data Format (JEIDA & Vesa)

VESA -DATAJEIDA -DATALVDS pin

R0R2TxIN/RxOUT0

R1R3TxIN/RxOUT1

R2R4TxIN/RxOUT2

TxOUT/RxIN0

TxOUT/RxIN1

TxOUT/RxIN2

R3R5TxIN/RxOUT3

R4R6TxIN/RxOUT4

R5R7TxIN/RxOUT6

G0G2TxIN/RxOUT7

G1G3TxIN/RxOUT8

G2G4TxIN/RxOUT9

G3G5TxIN/RxOUT12

G4G6TxIN/RxOUT13

G5G7TxIN/RxOUT14

B0B2TxIN/RxOUT15

B1B3TxIN/RxOUT18

B2B4TxIN/RxOUT19

B3B5TxIN/RxOUT20

B4B6TxIN/RxOUT21

B5B7TxIN/RxOUT22

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VSYNCVSYNCTxIN/RxOUT25

RESERVEDRESERVEDTxIN/RxOUT23

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R6R0TxIN/RxOUT27

R7R1TxIN/RxOUT5

G6G0TxIN/RxOUT10

G7G1TxIN/RxOUT11

B6B0TxIN/RxOUT16

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5.5 Input Signals, Basic Display Colors and Gray Scale of Each Color

COLOR

BASIC

COLOR

GRAY

SCALE

OF

RED

GRAY

SCALE

OF

GREEN

GRAY

SCALE

OF

BLUE

DISPLAY

(8bit)

DARK

↑

↓

LIGHT

DARK

↑

↓

LIGHT

DARK

↑

↓

LIGHT

DATA SIGNAL

BLUEGREENRED

::::::::::::::::::

::::::::::::::::::

::::::::::::::::::

::::::::::::::::::

::::::::::::::::::

::::::::::::::::::

GRAY
SCALE
LEVEL

B7B6B5B4B3B2B1B0G7G6G5G4G3G2G1G0R7R6R5R4R3R2R1R0

-000000000000000000000000BLACK

-111111110000000000000000BLUE

-000000001111111100000000GREEN

-111111111111111100000000CYAN

-000000000000000011111111RED

-111111110000000011111111MAGENTA

-000000001111111111111111YELLOW

-111111111111111111111111WHITE

R0000000000000000000000000BLACK

R1000000000000000000000001

R2000000000000000000000010

R3~

R252

R253000000000000000011111101

R254000000000000000011111110

R255000000000000000011111111RED

G0000000000000000000000000BLACK

G1000000000000000100000000

G2000000000000001000000000

G3~

G252

G253000000001111110100000000

G254000000001111111000000000

G255000000001111111100000000GREEN

B0000000000000000000000000BLACK

B1000000010000000000000000

B2000000100000000000000000

B3~

B252

B253111111010000000000000000

B254111111100000000000000000

B255111111110000000000000000BLUE

Note) Definition of Gray :

Rn : Red Gray, Gn : Green Gray, Bn : Blue Gray (n = Gray level)

Input Signal : 0 = Low level voltage, 1 = High level voltage

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6. Interface Timing

6.1 Timing Parameters ( DE only mode )

NOTEUnitMAX.TYP.MIN.SYMBOLITEMSIGNAL

Clock

Hsync

Vsync

Vertical

Display Term

Horizontal

Display Term

Frequency

Active

Display

Period

Vertical

Total

Active

Display

Period

Horizontal

Total

C

H

V

VD

V

HD

H

Note) This product is DE only mode. The input of Hsync & Vsync signal does

not have an effect on normal operation.
(1) Test Point : TTL control signal and CLK at LVDS Tx input terminal in system
(2) Internal VDD= 3.3V

-MHz8275651/T

-KHz534844F

-Hz666048F

-lines-768-T

-lines1200838773T

-clocks-1366-T

-clocks200016001460T

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6.2 Timing diagrams of interface signal ( DE only mode )

T

V

T

VD

DE

T

H

T

HD

DE

D

CLK

DATA

SIGNALS

T

C

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6.3 Power ON/OFF Sequence

To prevent a latch-up or DC operation of the LCD Module, the power on/off

sequence should be as the diagram below.

0<T1≤10ms
0<T2≤50ms
0<T3≤50ms
1000ms≤T4

1000ms≤T5

(Recommend Value)

100ms≤T6

(Recommend Value)

T1 : VDDrising time from 10% to 90%
T2 : The time from VDDto valid data at power ON.
T3 : The time from valid data off to VDDoff at power Off.
T4 : VDDoff time for Windows restart
T5 : The time from valid data to B/L enable at power ON.
T6 : The time from valid data off to B/L disable at power Off.

 The supply voltage of the external system for the Module input should be the same

as the definition of VDD.

 Apply the lamp voltage within the LCD operation range. When the back light turns on

before the LCD operation or the LCD turns off before the back light turns off,
the display may momentarily show abnormal screen.

 In case of VDD= off level,

please keep the level of input signals low or keep a high impedance.

 T4 should be measured after the Module has been fully discharged between power off

and on period.

 Interface signal should not be kept at high impedance when the power is on.

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7. Outline Dimension (Front View)

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7. Outline Dimension (Rear View)

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8. Reliability Test

QuantityTest conditionItem

Temperature

Step stress

ESD

POWER

ON/OFF

Contact : ±8 kV ,150㎊/330Ω,100Point,1time/Point

Non-contact : ±15 kV,200㎊/100Ω,100Point,1time/Point

4EA-20 ∼60℃, 10Cycle

8EA50℃operation, 1000HRHTOL

4EA0℃operation, 1000HRLTOL

4EA70℃storage, 500HRHTS

4EA-30℃storage, 500HR LTS

4EA40℃/ 95%RH, 500HRTHB

4EA60℃/ 75%RH,, 500HRWHTS

4EA-20 ℃~ 60 ℃, 200cycle T/C

3EAC D M : ±10 kV,150㎊/330 Ω,9Point,3times/PointESD

Per 3EA

4EA30sec(on) / 30sec(off) : 12,000 times

[ Result Evaluation Criteria]

Under the display quality test conditions with normal operation state, these should
be no change which may affect practical display functions.

* HTOL/ LTOL : High/Low Temperature Operating Life
** THB : Temperature Humidity Bias
*** HTS/LTS : High/Low Temperature Storage
**** WHTS : Wet High Temperature Storage

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1Box(20EA)1.05Grms, Random, 1HR Z axisBox Vibration

1Box(20EA)20cm, 1Angle, 3Edge, 6FaceBox Drop

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3EA10~300Hz/1.5G/10minSR, XYZ, 30min/axis Vibration

3EA50G, 11msec, ±XYZ 1time/axisShock

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9. PACKING

9.1 CARTON (Internal Package)

(1) Packing Form

Corrugated fiberboard box and corrugated cardboard as shock absorber

(2) Packing Method

Packing

-Pallet Box

Cushion-Foam

LCD Module (12ea)

Cushion-Foam

Direction be able to open it

LCD Module (12ea)

Cushion-Foam

Pallet-Plastic

9.2 Packing Specification

LCD Packing

24ea / (Packing-

1Box / PalletPallet

Pallet Box)

VerticalPacking Direction

198.8 kgTotal Pallet Weight

RemarkSpecificationItem

1. 168 Kg / LCD (24ea)

2. 3.5 Kg / Cushion-SET (4ea)

3. 8.8 Kg / Packing-Pallet Box (1ea)

4. Cushion-pallet Material : EPS

5. Packing-Pallet Box Material : DW4

1. Pallet weight = 8kg

2. 8Kg/Pallet

1150mm(H) x 985mm(V) x 1161mm(height)H x V x heightTotal Pallet Size

Pallet(8kg) + Module(7*24=168) +
Cushion(4ea=14kg) + Pallet-BOX(8.8kg)

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10. MARKING & OTHERS

A nameplate bearing followed by is affixed to a shipped product at the specified
location on each product.

(1) Parts number : LTA320WT-L05
(2) Revision: Three letters
(3) Lot number : X X X X XXX XX X

Cell Position No. (In the Glass)
Glass No. (In the one Lot)
Lot No. (Glass)
Month
Year (Note1)
Product code
Line

(4) Nameplate Indication

Week code : 05 29

LTA320WT-L05

XXXXXXXXXX XXX

(5) Packing box attach

LTA320WT-L05

week
year

40mm

Revision code

Lot number

80mm

100mm

Part number

XXXX

24

Box serial number

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165mm

(6) Others

1. After service part
Lamps cannot be replaced because of the narrow bezel structure.

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11. General Precautions

11.1 Handling

(a) When the Module is assembled, it should be attached to the system firmly

using all mounting holes. Be careful not to twist and bend the Module.

(b) Because the inverter use high voltage, it should be disconnected from power

before it is assembled or disassembled.

(c) Refrain from strong mechanical shock and / or any force to the Module.

In addition to damage, this may cause improper operation or damage to the Module
and CCFL back light.

(d) Note that polarizers are very fragile and could be damage easily.

Do not press or scratch the surface harder than a HB pencil lead.

(e) Wipe off water droplets or oil immediately. If you leave the droplets for a long

time, staining or discoloration may occur.

(f) If the surface of the polarizer is dirty, clean it using absorbent cotton or soft cloth.

(g) Desirable cleaners are water, IPA(Isopropyl Alcohol) or Hexane.

Do not use Ketone type materials(ex. Acetone), Ethyl alcohol, Toluene, Ethyl acid
or Methyl chloride. It might permanent damage to the polarizer due to chemical
reaction.

(h) If the liquid crystal material leaks from the panel, it should be kept away

from the eyes or mouth . In case of contact with hands, legs or clothes, it must
be washed away with soap thoroughly.

(i) Protect the module from Electrostatic discharge. Otherwise the ASIC IC or

Semiconductor would be damaged

(j) Use finger-stalls with soft gloves in order to keep display clean during the

incoming inspection and assembly process.

(k) Do not disassemble the Module.

(l) Do not disassemble shield case of inverter & LVDS board.

(m) Do not connect N.C pins. (Samsung internal use only)

(n) Protection film for polarizer on the Module should be slowly peeled off just before use

so that the electrostatic charge can be minimized. Must put on antistatic glove while
handle a module

(o) Pins of I/F connector should not be touched directly with bare hands.

.

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11.2 Storage

(a) Do not leave the Module in high temperature, and high humidity for a long time.

It is highly recommended to store the Module with temperature from 0 to 35℃
and relative humidity of less than 70%.

(b) Do not store the TFT-LCD Module in direct sunlight.

(c) The Module should be stored in a dark place. It is prohibited to apply sunlight or

fluorescent light in storing.

11.3 Operation

(a) Do not connect or disconnect the Module in the "Power On" condition.

(b) Power supply should always be turned on/off by the "Power on/off sequence"

(c) Module has high frequency circuits. Sufficient suppression to the electromagnetic

interference should be done by system manufacturers. Grounding and shielding methods
may be important to minimize the interference.

(d) The cable between the back light connector and its inverter power supply should

be connected directly with a minimized length. A longer cable between
the back light and the inverter may cause lower luminance of lamp(CCFL) and
may require higher startup voltage(Vs).

11.4 Operation Condition Guide

(a) The LCD product should be operated under normal conditions.

Normal condition is defined as below;

- Temperature : 20±15℃

- Humidity : 55±20%

- Display pattern : continually changing pattern (Not stationary)

(b) If the product will be used in extreme conditions such as high temperature,

humidity, display patterns or operation time etc.., It is strongly recommended
to contact SEC for Application engineering advice. Otherwise, its reliability and
function may not be guaranteed. Extreme conditions are commonly found at
Airports, Transit Stations, Banks, Stock market, and Controlling systems.

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11.5 Others

(a) Ultra-violet ray filter is necessary for outdoor operation.

(b) Avoid condensation of water. It may result in improper operation or disconnection

of electrode.

(c) Do not exceed the absolute maximum rating value. ( supply voltage variation,

input voltage variation, variation in part contents and environmental temperature,
and so on)
Otherwise the Module may be damaged.

(d) If the Module keeps displaying the same pattern for a long period of time,

the image may be "sticked" to the screen.
To avoid image sticking, it is recommended to use a screen saver.

(e) This Module has its circuitry PCB's on the rear side and should be handled

carefully in order not to be stressed.

(f) Please contact SEC in advance when you display the same pattern for a long time.

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