Samsung LTM170EU-L21 Datasheet

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Page 1

Product Information

ISSUE DATE : 2004-10-05 MODEL : LTM170EU-L21

Note : This Product information is subject to change after 3 months of issuing date

Prepared by : LCD Business Technical Customer Service Team

Samsung Electronics Co . , LTD.



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Page 2

Contents

General Description -------------------------- (3)

1. Absolute Maximum Ratings -------------------------- (4)

1.1 Absolute ratings of environment

1.2 Electrical Absolute Ratings

2. Optical Characteristics -------------------------- (6)

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

3.1 TFT LCD Module

3.2 Back-light Unit

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

4.1 TFT LCD Module

4.2 Back-light Unit

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

5.1 Input Signal & Power

5.2 LVDS Interface

5.3 Back-light Unit

5.4 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. General Precaution --------------------------- (24)

8.1 Handling

8.2 Storage

8.3 Operation

8.4 Others

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General Description

*Description

LTM170EU-L21 is a color active matrix TFT (Thin Film Transistor) liquid crystal display

(LCD) that uses amorphous silicon TFTs as switching devices. This model is composed of a

TFT LCD panel, a driver circuit and a back-light system. The resolution of a 17.0" contains

1280 x 1024 pixels and can display up to 16.2 millions colors.

*Features

-Highcontrastratio,highaperturestructure

-TN(TwistedNematic)mode

- Wide viewing angle

-Highspeedresponse

-SXGA(1280x1024pixels)resolution

-Lowpowerconsumption

-2dualCCFTs(ColdCathodeFluorescentTube)

-DE(DataEnable)mode

-LVDS(LowVoltageDifferentialSignaling)interface(2pixel/clock)

-COMPACTSIZEDESIGN

*Applications

Workstation & desktop monitors

Display terminals for AV application products

Monitors for industrial machine

* If the module is used to other applications besides the above, please contact SEC

in advance.

*Generalinformation

Items Specification Unit Note

Display area 337.92(H) x 270.336(V) mm

Driver element a-Si TFT active matrix

Display colors 16.2M colors

Number of pixels 1280 x 1024 pixel

Pixel arrangement RGB vertical stripe

Pixel pitch 0.264(H) x 0.264(W) mm

Display mode Normally White

Surface treatment Haze 25% , Hard-coating (3H)

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* Mechanical information

Item Min. Typ. Max. Note

Module

Horizontal(H) - (358.5) - mm

size

Vertical(V) - (296.5) - mm

Depth(D) - - (17.5) mm

Weight - - (1,950) g

1. Absolute Maximum Ratings

1.1 Absolute ratings of environment

Item Symbol Min. Max. Unit Note

Storage temperature T

Operating temperature

(Glass surface temperature)

Shock ( non - operating ) Snop - 50 G (2),(4)

STG

OPR

-25 60

0 50



(1)

Vibration ( non - operating ) Vnop - 1.5 G (3),(4)

Note (1) Temperature and relative humidity range are shown in the figure below.

90 % RH Max. ( 40 °CTa ) Maximum wet-bulb temperature at 39 °C or less. (Ta > 40 °C) No condensation.

(2) 11ms, sine wave, one time for ±X, ±Y, ±Z axis

(3) 10-300 Hz, Sweep rate 10min, 30min for X,Y,Z axis

(4) At vibration and shock test, the fixture which holds the module to be tested

has to be hard and rigid enough so that the module would not be twisted or

bent by the fixture.

Relative Humidity ( %RH)

100

Operating

Range

( 25,5)

(-25,5)

-40 -20 0 20 40 60 80

Storage Range

Temperature (

( 40, 90 )

( 50, 50.4 )

( 60,27.7)

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1.2 ELECTRICAL ABSOLUTE RATINGS

(1) TFT LCD Module (Vss = GND = 0 V)

Item Symbol Min. Max. Unit Note

Power Supply Voltage V

NOTE (1) Within Ta ( 25 ± 2 °C)

(2) BACK-LIGHT UNIT

Item

Lamp Current I

Lamp Frequency f

Symbol Min. Max. Unit. Note

NOTE

(1) Permanent damage to the device may occur if maximum values are exceeded.

Functional operation should be restricted to the conditions described under Normal

Operating Conditions.

(2) Specified values are for a single lamp

(Refer to the Note (1) in the page 12 for further information).

Vss-0.5 6.5 V (1)

Ta = 25 ± 2°C)

(

(2.0) (7.0) mArms (1),(2)

(40) (80) kHz (1)

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2. Optical Characteristics

The following items are measured under stable conditions. The optical characteristics should

be measured in a dark room or equivalent state with the methods shown in Note (1).

Measuring equipment : TOPCON BM-5A, BM-7, PHOTO RESEARCH PR650

Eldim EZ-Contrast

(Inverter Freq. : 50kHz) * Ta = 25 ± 2°C, VDD=5V, fv= 60Hz, f

Item Symbol Condition Min. Typ. Max. Unit Note

Contrast Ratio

C/R

- (700) -

(Center of screen)

Response

Time

Luminance of White

(Center of screen)

Rising Tr - (1.7) -

Falling Tf - (6.3) -

Normal





- (300) - cd/m2

(0.650)

Red

Ry (0.330)

Viewing

Angle

Color

Gx (0.300)

Green

Gy (0.600)

Chromaticity

(CIE 1931)

Bx (0.150)

Blue

By (0.080)

=54MHz, IL=6.5mA

DCLK

msec

rms

(3)

BM-5A

(5)

BM-7

(6)

BM-5A

(7)

PR650

White

Hor.

Viewing

Angle

Ver.

Brightness Uniformity

(9 Points)

Wx (0.313)

Wy (0.329)



R - (75) -



CR10

H - (75) -



L - (60) -



- (75) -

Degrees

Buni - - (25) %

(8)

BM-5A

(4)

BM-5A

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Note 1) Test Equipment Setup

The measurement should be executed in a stable, windless and dark room between

30min and 40min after lighting the back-light at the given temperature for stabilization

of the back-light. This should be measured in the center of screen.

Single lamp current : 6.5mA (Refer to the note(1) in the page 12 for more information.)

Environment condition : Ta = 25 ± 2 ° C

Photodetector

Photodetector Field

BM-5A 2

BM-7 2

PR650 1

TFT - LCD Module



Field

The center of the screen

Optical Measuring Equipment Setup

BM-5A : 40

BM-7 : 50

PR650 : 50

LCD Panel



Note 2) Definition of test point

128 640 1152

102

512

922

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Active AREA

: test point

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Note 3) Definition of Contrast Ratio (C/R) : Ratio of gray max (Gmax) & gray min (Gmin)



max

min



of the panel

at the center point



Gmax : Luminance with all pixels white

Gmin : Luminance with all pixels black

Note 4) Definition of 9 points brightness uniformity

Buni



(max min)

100

max

Bmax : Maximum brightness

Bmin : Minimum brightness

Note 5) Definition of Response time : Sum of Tr, Tf

Display data

Optical Instruments

Response

100%

90%

10%

White (data off)

Black (data on)

White (data off)

Time

Note 6) Definition of Luminance of White : Luminance of white at center point.

Note 7) Definition of Color Chromaticity (CIE 1931)

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

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Note 8) Definition of Viewing Angle : Viewing angle range (CR10 )

Normal Line

 = 0

 = 0

 L

 R

 H



=90

 L

12 O’clock direction

= 90



6 O’clock direction



= 90 o

x’y’

=90



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3. Electrical Characteristics

3.1 TFT LCD MODULE Ta = 25

Item

Voltage of Power Supply

Symbol Min. Typ. Max. Unit Note

4.5 5.0 5.5 V (1)

Interface type LVDS DS90C383/385 DS90C386 Pair

Current of

Power

Supply

Vsync Frequency

Hsync Frequency

Main Frequency

(a) Black

- (600) - mA

55 60 77 Hz

56.7 64 82.082 kHz

40 54 69.28 MHz

- - 3.0 A (4)

Rush Current

DCLK

RUSH

(2),(3)(b) White - (500) - mA

Note (1) The connector for display data & timing signal should be connected.(Vss=0V)

(2) f

=60Hz, f

DCLK

=54MHz, V

=5.0V, DCCurrent.

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

a) Black Pattern b) White Pattern

c) Dot Pattern

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(4) Measurement Conditions

R1 47K

CONTROL SIGNAL

(HIGH to LOW)

14V

12V

C3 1uF

47K

Note : Control Signal : High(+5V)

All Signal lines to panel except for power 5V : Ground

The rising time of supplied voltage is controlled to 470us by R3 and C2 value.

M1 2SK1059

10000pF



Low(Ground)

M2 2SK1399

FUSE

VDD ( LCD INPUT)

C1 1uF

GND

0.9 VDD

0.1 VDD

Rising Time

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3.2 BACK-LIGHT UNIT

The back-light system is an edge - lighting type with 2 dual CCFTs ( Cold Cathode

Fluorescent Tube ) The characteristics of two dual lamps are shown in the following tables.

Ta=25 ± 2° C

Item

Lamp Current I

Lamp Voltage V

Lamp Frequency f

Symbol Min. Typ. Max. Unit Note

(3.0) (6.5) (7.0) mArms (1)

- (650) - Vrms

(40) - (60) kHz (2)

0:(1,800)

Startup Voltage Vs - -

Vrms (3)

25: (1,500)

Note) The waveform of the inverter output voltage must be area symmetric and the design

of the inverter must have specifications for the modularized lamp.

The performance of the back-light, for example life time or brightness, is much influenced by the

characteristics of the DC-AC inverter for the lamp. 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 that a poor lighting caused by the

mismatch of the back-light and the inverter(miss lighting, flicker, etc.) never occur. When you confirm

it, the module should be operated in the same condition as it is installed in your instrument.

Note (1) Lamp current is measured with current meter for high frequency as shown below.

Refer to the block diagram of the back-light unit in the next page for more information.

Specified values are for a single lamp.

Hot(Red)

Cold(White)

Hot(Blue)

LCD Module

Cold(Black)

Hot(Red) Cold(White)

Hot(Blue)

Cold(Black)

Inverter

(SK1700)

(2) Lamp frequency may produce interference with horizontal synchronous frequency which may

cause line flow on the display. Therefore lamp frequency should be detached from the

horizontal synchronous frequency and its harmonics as far as possible in order to avoid

interference.

(3) If an inverter has shutdown function it should keep its output for more than 1 second even if

the lamp connector open. Otherwise the lamps may not to be turned on.

(4) Because the inverter useshighvoltage,pleasedisconnectitfromthepowerbefore

assembling or disassembling.

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4. Block Diagram

4.1 TFT LCD MODULE

Input

Connector

(30P)

DC/DC

Converter

L-TCON

(LVDS &

Timing

Controller)

Vcom

Generator

Gamma

Generator

RSDS Signal

Gate

Drive

(x4ea)

Source Drive IC (x10ea)

(RSDS)

TFT-LCD PANEL

Video Data Control Signal Gamma Vcom DVdd AVdd Von/Voff

4.2 BACK-LIGHT UNIT

LAMP(CCFL)

Connector : JST BHSR-02VS-1 or equivalent

HOT(PINK)

COLD(WHITE)

HOT(BLUE)

COLD(BLACK)

HOT(PINK)

COLD(WHITE)

LAMP(CCFL)

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HOT(BLUE)

COLD(BLACK)

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5. Input Terminal Pin Assignment

5.1. Input Signal & Power ( Connector : FI-XB30SSL-HF15 or equivalent )

PIN NO SYMBOL FUNCTION

1 V

3 V

Power Supply : +5V2 V

4 NC No Connection

5 NC No Connection

6 NC No Connection

7 GND Power Ground

8 RXE3+ Positive Transmission Data of Pixel 3 (EVEN data)

9 RXE3- Negative Transmission Data of Pixel 3 (EVEN data)

10 RXEC+ Positive Sampling Clock (EVEN data)

11 RXEC- Negative Sampling Clock (EVEN data)

12 RXE2+ Positive Transmission Data of Pixel 2 (EVEN data)

13 RXE2- Negative Transmission Data of Pixel 2 (EVEN data)

14 GND Power Ground

15 RXE1+ Positive Transmission Data of Pixel 1 (EVEN data)

16 RXE1- Negative Transmission Data of Pixel 1 (EVEN data)

17 GND Power Ground

18 RXE0+ Positive Transmission Data of Pixel 0 (EVEN data)

19 RXE0- Negative Transmission Data of Pixel 0 (EVEN data)

20 RXO3+ Positive Transmission Data of Pixel 3 (ODD data)

21 RXO3- Negative Transmission Data of Pixel 3 (ODD data)

22 RXOC+ Positive Sampling Clock (ODD data)

23 RXOC- Negative Sampling Clock (ODD data)

24 GND Power Ground

25 RXO2+ Positive Transmission Data of Pixel 2 (ODD data)

26 RXO2- Negative Transmission Data of Pixel 2 (ODD data)

27 RXO1+ Positive Transmission Data of Pixel 1 (ODD data)

28 RXO1- Negative Transmission Data of Pixel 1 (ODD data)

29 RXO0+ Positive Transmission Data of Pixel 0 (ODD data)

30 RXO0- Negative Transmission Data of Pixel 0 (ODD data)

Note) Start from Right side

PCB

Pin No. 1Pin No. 30

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5.2 LVDS Interface

5.2.1 Odd pixel data (1st pixel data)

1st LVDS Transmitter (

Device Input Pin Device Input Signal

No Symbol Symbol Function Terminal Symbol

51 TXIN0 RO0 Red Odd Pixel Data (LSB)

52 TXIN1 RO1 Red Odd Pixel Data

54 TXIN2 RO2 Red Odd Pixel Data

55 TXIN3 RO3 Red Odd Pixel Data

56 TXIN4 RO4 Red Odd Pixel Data

2 TXIN5 RO7 Red Odd Pixel Data (MSB)

3 TXIN6 RO5 Red Odd Pixel Data

4 TXIN7 GO0 Green Odd Pixel Data (LSB)

6 TXIN8 GO1 Green Odd Pixel Data

7 TXIN9 GO2 Green Odd Pixel Data

DS90C383, DS90C385

)SignalInterface

To LTM170EU

Output

Signal

TXOUT0-

TXOUT0+

TXOUT3-

TXOUT3+

TXOUT0-

TXOUT0+

TXOUT1-

TXOUT1+

Interface ( CN101 )

No. 1

No. 2

No. 10

No. 11

No. 1

No. 2

No. 3

No. 4

RXO0-

RXO0+

RXO3-

RXO3+

RXO0-

RXO0+

RXO1-

RXO1+

8 TXIN10 GO6 Green Odd Pixel Data

10 TXIN11 GO7 Green Odd Pixel Data (MSB)

11 TXIN12 GO3 Green Odd Pixel Data

12 TXIN13 GO4 Green Odd Pixel Data

14 TXIN14 GO5 Green Odd Pixel Data

15 TXIN15 BO0 Blue Odd Pixel Data (LSB)

16 TXIN16 BO6 Blue Odd Pixel Data

18 TXIN17 BO7 Blue Odd Pixel Data (MSB)

19 TXIN18 BO1 Blue Odd Pixel Data

20 TXIN19 BO2 Blue Odd Pixel Data

22 TXIN20 BO3 Blue Odd Pixel Data

23 TXIN21 BO4 Blue Odd Pixel Data

24 TXIN22 BO5 Blue Odd Pixel Data

50 TXIN27 RO6 Red Odd Pixel Data

TXOUT3-

TXOUT3+

TXOUT1-

TXOUT1+

TXOUT3-

TXOUT3+

TXOUT1-

TXOUT1+

TXOUT2-

TXOUT2+

TXOUT3-

TXOUT3+

No. 10

No. 11

No. 3

No. 4

No. 10

No. 11

No. 3

No. 4

No. 5

No. 6

No. 10

No. 11

RXO3-

RXO3+

RXO1-

RXO1+

RXO3-

RXO3+

RXO1-

RXO1+

RXO2-

RXO2+

RXO3-

RXO3+

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5.2.2 Even pixel data (2nd pixel data)

2nd LVDS Transmitter (

Device Input Pin Device Input Signal

No Symbol Symbol Function Terminal Symbol

51 TXIN0 RE0 Red Even Pixel Data (LSB)

52 TXIN1 RE1 Red Even Pixel Data

54 TXIN2 RE2 Red Even Pixel Data

55 TXIN3 RE3 Red Even Pixel Data

56 TXIN4 RE4 Red Even Pixel Data

2 TXIN5 RE7 Red Even Pixel Data (MSB)

3 TXIN6 RE5 Red Even Pixel Data

4 TXIN7 GE0 Green Even Pixel Data (LSB)

6 TXIN8 GE1 Green Even Pixel Data

7 TXIN9 GE2 Green Even Pixel Data

DS90C383, DS90C385

)SignalInterface

To LTM170EU

Output

Signal

TXOUT0-

TXOUT0+

TXOUT3-

TXOUT3+

TXOUT0-

TXOUT0+

TXOUT1-

TXOUT1+

Interface ( CN101 )

No. 12

No. 13

No. 22

No. 23

No. 12

No. 13

No. 15

No. 16

RXE0-

RXE0+

RXE3-

RXE3+

RXE0-

RXE0+

RXE1-

RXE1+

8 TXIN10 GE6 Green Even Pixel Data

10 TXIN11 GE7 Green Even Pixel Data (MSB)

11 TXIN12 GE3 Green Even Pixel Data

12 TXIN13 GE4 Green Even Pixel Data

14 TXIN14 GE5 Green Even Pixel Data

15 TXIN15 BE0 Blue Even Pixel Data (LSB)

16 TXIN16 BE6 Blue Even Pixel Data

18 TXIN17 BE7 Blue Even Pixel Data (MSB)

19 TXIN18 BE1 Blue Even Pixel Data

20 TXIN19 BE2 Blue Even Pixel Data

22 TXIN20 BE3 Blue Even Pixel Data

23 TXIN21 BE4 Blue Even Pixel Data

24 TXIN22 BE5 Blue Even Pixel Data

50 TXIN27 RE6 Red Even Pixel Data

TXOUT3-

TXOUT3+

TXOUT1-

TXOUT1+

TXOUT3-

TXOUT3+

TXOUT1-

TXOUT1+

TXOUT2-

TXOUT2+

TXOUT3-

TXOUT3+

No. 22

No. 23

No. 15

No. 16

No. 22

No. 23

No. 15

No. 16

No. 18

No. 19

No. 22

No. 23

RXE3-

RXE3+

RXE1-

RXE1+

RXE3-

RXE3+

RXE1-

RXE1+

RXE2-

RXE2+

RXE3-

RXE3+

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Page 17

5.3 BACK-LIGHT UNIT

Pin No. Input Color Function

1 Hot1 Pink High Voltage

Upper

Lower

2 Cold1 White Ground

3 Hot2 Blue High Voltage

4 Cold2 Black Ground

1 Hot1 Pink High Voltage

2 Cold1 White Ground

3 Hot2 Blue High Voltage

4 Cold2 Black Ground

Connector

JST BHSR-02VS-1 or equivalent

Part No.

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Page 18

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

COLOR

BASIC

COLOR

GRAY

SCALE

RED

GRAY

SCALE

GREEN

GRAY

SCALE

BLUE

DISPLAY

(8bit)

BLACK 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -

BLUE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 -

GREEN 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 -

CYAN 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 -

RED 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -

MAGENTA 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 -

YELLOW 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 -

WHITE 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 -

BLACK 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R0

DARK

LIGHT

RED 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R252

BLACK 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 G0

DARK

LIGHT

GREEN 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 G252

BLACK 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 B0

DARK

LIGHT

BLUE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 B252

R0 R1 R2 R3 R4 R5 R6 R7 G0 G1 G2 G3 G4 G5 G6 G7 B0 B1 B2 B3 B4 B5 B6 B7

1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R1













0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R2

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

1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R252

0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R252

0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 G1

0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 G2

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

0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 G252

0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 G252

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 B1

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 B2

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

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1 B252

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 B252

RED GREEN BLUE

DATA SIGNAL

GRAY

SCALE

LEVEL

R3~

R252

G3~

G252

B3~

B252

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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Page 19

6. Interface Timing

6.1 Timing Parameters ( DE only mode )

SIGNAL ITEM SYMBOL MIN. TYP. MAX. UNIT NOTE

Frequency 1/T

Clock

Data

Data Enable Setup Time T

Frame Frequency

Vertical Active

Display Term

High Time T

Low Time T

Setup Time T

Hold Time T

Cycle Tv

Frequency 1/Tv 55 60 77 Hz (3)

Display Period T

Vertical Blank

Period

40 54 69.28 MHz

4 - - nsec

(1), (2)

4 - - nsec

18.2 16.7 12.99 msec

1031 1066 - lines

1024 1024 1024 lines

8 - - lines

One Line

Scanning Time

Horizontal Active

Display Term

Cycle T

Display Period T

752 844 1130 clocks

640 640 640 clocks

Note (1) Test Point : TTL control signal and CLK at LVDS Tx input terminal in system

(2) Internal Vcc = 3.3V

(3) At low Vsync frequency, under 60Hz, flicker level can increase at specific pattern.

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Page 20

6.2 Timing diagrams of interface signal ( DE only mode )

CLK

DATA

SIGNALS

CLK

DISPLAY

DATA

0.5 V

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Page 21

6.3 Power ON/OFF Sequence

:Topreventalatch-uporDCoperationoftheLCDmodule,thepoweron/offsequence

should be as the diagram below.

Power Supply

300 T1  10msec

0 0  T

0  T

Back-light(Recommended)

 T

 50 msec

1sec  T

Signals

500

msec 

100 msec 

0 V

0.1 V

0.9 V

Power On

0.9 V

0.1 V

VALID

Power Off

50% 50%

Power ON/OFF Sequence

NOTE.

(1) The supply voltage of the external system for the module input should be the

same as the definition of V

(2) 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 become abnormal screen.

(3) In case of V

= off level, please keep the level of input signals low or

keep a high impedance.

(4) T4 should be measured after the module has been fully discharged between

power off and on period.

(5) Interface signal should not be kept at high impedance when the power is on.

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7. Outline Dimension

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8. General Precautions

8.1 Handling

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

using all mounting holes. Be careful not to twist or bend the modules.

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

before it is assembled or disassembled.

In addition to damage, this may cause improper operation or damage to the module

and CCFT back-light.

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

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

(e) Wipe off water droplets or oil immediately.

If you leave the droplets for a long time, staining and discoloration may occur.

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

soft cloth.

(g) The 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 thoroughly with soap.

(i) Protect the module from static which may cause damage to the CMOS Gate Array IC.

(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 pull or fold the lamp wire.

(m) Do not adjust the variable resistor located on the module.

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

so that the electrostatic charge can be minimized.

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

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8.2 Storage

(a) Do not leave the module in high temperature, 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.

It is prohibited to apply sunlight or fluorescent light in storage.

8.3 Operation

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

(b) Power supply should always be turned on/off by 6.3 "Power on/off sequence"



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(CCFT) and

may require higher startup voltage(Vs).

8.4 Others

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

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

of electrode.

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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