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PRODUCT INFORMATION
ISSUED DATE : 2011-08-31
SAMSUNG TFT-LCD PRODUCT INFORMATION
TFT-
MODEL : LTM185AT05
Note : This is Product Information is subject to change after 3 months of issuing date.
Application Engineering Group
LCD Division, Samsung Electronics Co . , LTD.
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PRODUCT INFORMATION
Contents
General Description ---------------------------------------------------------------------------------- (3)
1. Absolute Maximum Ratings -------------------------------------------------------------------- (4)
2. Optical Characteristics ---------------------------------------------------------------------------- (6)
3. Electrical Characteristics ----------------------------------------------------------------------- (11)
3.1 TFT LCD Module
3.2 Back Light Unit
4. Block Diagram ------------------------------------------------------------------------------------- (15)
4 1 TFT LCD Module
4.1
4.2 Back Light Unit
5. Input Terminal Pin Assignment ---------------------------------------------------------------- (16)
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 ----------------------------------------------------------------------------------- (21)
6.1 Timing Parameters (
g (DE only mode)
y )
6.2 Timing Diagrams of interface Signal (DE only mode)
6.3 Power ON/OFF Sequence
6.4 VDD Power Dip Condition
7. Outline Dimension -------------------------------------------------------------------------------- (25)
8. General Precaution ------------------------------------------------------------------------------- (27)
8.1 Handling
8.2 Storage
8.3 Operation
8.4 Operation Condition Guide
8.5 Others
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General Description PRODUCT INFORMATION
Description
LTM185AT05 product is a color active matrix liquid crystal display (LCD) that uses
amorphous silicon TFT (Thin Film Transistor) as switching components This model is
components.
composed of a TFT LCD panel, a driver circuit and a back light unit. The resolution of a
18.5" is 1366 X 768 and this model can display up to 16.7 millions colors.
Features
High contrast ratio, high aperture structure
TN (Twisted Nematic) mode
Wide Viewing Angle
HD (1366 x 768 pixels) resolution
Low power consumption
White LED Edge slim Backlight (1-side)
DE (Data Enable) only mode
LVDS (Low Voltage Differential Signaling) interface (1pixel/clock)
CCompact Si D i
t Size Design
RoHS compliance
TCO5.0 compliance
( Except for 2.2 response time; this product does not have over driving function.
It is recommended to support in system level )
Halogen Free
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
advance.
General Information
Items Specification Unit Note
Pixel Pitch 0.300(H) x 0.300(W) mm
Active Display Area 409.8(H) x 230 ( )
09 8( ) 230.4(V) mm
Surface Treatment Haze 25%, Hard-coating(3H)
Display Colors 16.7M (Hi-FRC ) colors
Number of Pixels 1,366 x 768 pixel
Pixel Arrangement RGB vertical stripe
Display Mode Normally White
Luminance of White 250(Typ.) cd/
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PRODUCT INFORMATION
Mechanical Information
Item Min.
Min T p
Typ. Max.
Ma Unit Note
Horizontal (H) 429.87 430.37 430.87 mm
Module -
Vertical (V) 254.1 254.6 255.1 mm
size
Depth (D) - - 10.7 mm .
Weight - - 1 00
1500 g LCD module only
C
Note (1) Mechanical tolerance is 0.5mm unless there is a special comment.
1. Absolute Maximum Ratings
If the condition exceeds maximum ratings, it can cause malfunction or unrecoverable
damage to the device.
Item Symbol Min. Max. Unit Note
Power Supply Voltage VDD GND-0.5 5.5 V (1)
Storage temperature TSTG -20 60 (2)
Operating Temperature TOPR 0 50 (2)
Center of Glass surface temperature
TSUF 0 50 (2)
( p
(Operation))
Shock ( non - operating ) Snop - 50 G (3)(5)
Vibration ( non - operating ) Vnop - 1.5 G (4)(5)
Note (1) Ta= 25 2 C
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PRODUCT INFORMATION
(2) Temperature and relative humidity range are shown in the figure below.
a. 90 % RH Max. (Ta 39 C)
b.
b Maximum wet-bulb temperature at 39 C or less. (Ta 39 C)
less
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
(5) 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.
Fig. Temperature and Relative humidity range
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2. Optical Characteristics PRODUCT INFORMATION
The optical characteristics should be measured in a dark room or equivalent.
Measuring equipment : SR 3 RD 80S (TOPCON), EZ-Contrast (Eldim)
SR-3, RD-80S (TOPCON) EZ Contrast
(Ta = 25 2 C, VDD=5V, fv= 60Hz, fDCLK=72.33MHz, IF = 360mA
Item Symbol Condition Min. Typ. Max. Unit Note
Contrast Ratio (3)
C/R 600 1000 -
(Center of screen) SR-3
Response (5)
On/Off Tr+ Tf - 5 10 msec
Time RD-850S
Luminance of White (6)
YL 200 250 - cd/m2
(Center of screen) SR-3
Rx 0.639
Red
Ry 0.340
Gx 0.324
Green
Color Gy 0.622
Chromaticity -0.030
-0 030 +0 030
+0.030
(CIE 1931) Bx 0.155
Blue
By 0.042
Wx 0.313
White Normal
Wy 0.329
L,R=0 (7),(8)
U,D=0
0 SR-3
SR 3
Ru' 0.441
Red
Rv' Viewing 0.527
Angle
Gu' 0.132
Color Green
Chromaticity Gv' 0.570
- -
(CIE 1976) Bu' 0.194
Blue
Bv' 0.118
Wu' 0.198
White
Wv' 0.468
CGL
C.G.L White
Whi u'v''
' - - 0 02
0.02 (9)
* C.G.L : Color Grayscale Linearity (continue to the next page)
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PRODUCT INFORMATION
Item Symbol Condition Min. Typ. Max. Unit Note
Color Gamut - - 72 - %
Color Temperature - - 6500 - K
L 70 80 -
Hor.
70 80 - (8)
Viewing R
CR10 Degrees EZ-
Angle 70 80 -
U Contrast
Ver.
D 70 80 -
Brightness Uniformity (4)
Buni - - 25 %
(9 Points) SR-3
Note (1) Test Equipment Setup
The measurement should be executed in a stable, windless and dark room between
30min after lighting the back light at the given temperature for stabilization
of the back light. This should be measured in the center of screen.
LED current : 360mA Environment condition : Ta = 25 2 C
Photodetector
Photodetector Field
SR-3 2 Field
SR-3 : 50
RD-80S : 50
TFT - LCD Module
LCD Panel
The center of the screen
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PRODUCT INFORMATION
Note (2) Definition of test point
137 683 1229
Active Area
9 8 7 77
6 5 4 384
3 2 1
691
: Test Point
Note (3) Definition of Contrast Ratio (C/R)
: Ratio of gray max (Gmax) & gray min (Gmin) at the center point of the panel
G max
CR
G min
Gmax : Luminance with all pixels white
Gmin : Luminance with all pixels black
Note (4) Definition of 9 points brightness uniformity
G m a x
C R
G m in
Bmax : Maximum brightness
Bmin : Minimum brightness
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PRODUCT INFORMATION
Note (5) Definition of Response time
a.
a On/Off response time : Sum of Tr Tf
Tr,
Display Data White(TFT off) Black(TFT on) White(TFT off)
Optical Instruments 100%
Response
90%
10%
0%
Note (6) Definition of Luminance of White : Luminance of white at center point
Note (7) Definition of Color Chromaticity (CIE 1931 CIE1976)
1931,
Color coordinate of Red, Green, Blue & White at center point
Note (8) Definition of Viewing Angle
: Viewing angle range (CR 10)
10)
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PRODUCT INFORMATION
Note (9) Color Grayscale Linearity
a.
a Test image : 100% full white pattern with a test pattern as below
b. Test pattern : Squares, 40mm by 40mm in size, filled with 255, 225, 195, 165, 135 and
105 grays steps should be arranged at the center of the screen.
c. Test method
-1st gray step : move a square of 255 gray level should be moved into the center of the
screen and measure luminance and u' and v' coordinates.
Next
- N t gray step : M
t i t th
Move a 225 gray square into the center and measure both
t d b th
luminance and coordinates, too.
d. Test evaluation
'u' v' = (u' A - u' B) 2 + (v' A - v' B) 2
'u v (u u (v v
Where A, B : 2 gray levels found to have the largest color differences between them
i.e. get the largest u' and v' of each 6 pair of u' and v' and calculate the u'v'.
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3. Electrical Characteristics PRODUCT INFORMATION
3.1 TFT LCD Module
The connector for display data & timing signal should be connected.
Ta
T = 25 C
Item Symbol Min. Typ. Max. Unit Note
Voltage of Power Supply VDD 4.5 5.0 5.5 V (1)
Differential Input g
High - - +50 mV ( )
(2)
Voltage for LVDS
Receiver Threshold Low -50 - - mV
LVDS skew tSKEW - 270 270 (3)
LVDS
Input Differential input
|VID| 100 600 mV (4)
Characteri voltage
stics
Input voltage range
VIN 0.7 1.7 V (4)
(single-ended)
Common mode
VCM 1.0 1.2 1.4 V (4)
voltage
(a) Black - 500 - mA
Current of
Power (b) White IDD - 500 - mA (5),(6)
Supply
(c) Dot - 700 1,000 mA
Vsync Frequency fV 47 60 75 Hz
Hsync Frequency fH 37.13 47.40 59.25 kHz
Main Frequency fDCLK 56.66 72.33 90.42 MHz
Rush Current IRUSH - - 3.0 A (7)
Note (1) The ripple voltage should be controlled under 10% of VDD.
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PRODUCT INFORMATION
(2) Differential receiver voltage definitions and propagation delay and transition time test circuit
a. All input pulses have frequency = 10MHz, tR or tF=1ns
b. CL includes all probe and fixture capacitance
Note a.
Note b.
(3) LVDS Receiver DC parameters are measured under static and steady conditions
which may not be reflective of its performance in the end application.
T
LVDS Clk VDIFF= 0V VDIFF= 0V Differential
LVDS Data Differential
RX +/-
tSKEW
where tskew : skew between LVDS clock & LVDS data,
T : 1 period time of LVDS clock
cf) (-/+) of 270psec means LVDS data goes before or after LVDS clock.
(4) Definition of VID and VCM using single-end signals
VDD
VCM=1.4V |VID| = 100mV VCM=1 4V
=1.4V |VID| = 600mV
VCM=1.2V
VCM=1.0 |VID| = 100mV VCM=1.0 |VID| = 600mV
VSS
VCM range with Min |VID| VCM range with Max |VID|
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PRODUCT INFORMATION
(5) fV=60Hz, fDCLK = 72.33MHz, VDD = 5.0V, DC Current.
(6) Power dissipation check pattern (LCD Module only)
a) White Pattern b) Black Pattern c) Dot Pattern
(7) Measurement Condition
VDD
100%
90%
10%
GND
TRUSH=470
Rush Current IRUSH can be measured when TRUSH. is 470 .
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PRODUCT INFORMATION
3.2 Back Light Unit
3.2.1 The characteristics of LED bar
The back light unit is composed of WLED.
Ta=25 2C
Item Symbol Min. Typ. Max. Unit Note
(1)
LED Forward Current IF - 360 - mA
/ch
/ h
LED Array Voltage VP - 22.40 24.36 V -
Operating Life Time Hr 30,000 - Hour (2)
Note (1) The above specification is not for the converter output, but for the LED bar.
The LED bar consists of 21 LED packages ; 3 parallel X 7 serial
( LED 1 parallel Typ. current : 120mA )
(2) Life time (Hr) is defined as the time when brightness of a LED package itself
becomes 50% or less than its original value at the condition of Ta=25 2 C
and IF =360mA
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4. BLOCK DIAGRAM PRODUCT INFORMATION
4.1 TFT LCD Module
USI 2
Control signal Source Driver ICs
LVDS S1 S1366
pair #1 Control signal
RSDS(Tx)
LVDS (R
Column Driver Circuit
LVDS
p
pair #2
Rx)
CN1
(30pin) TFT-LCD
(1366 x RGB x 768 pixels)
Timing Controller
+5.0V
VDD Power
Circuit
4.2
4 2 Back Light Unit
Connector: Molex 104086-0410 or equivalent
(mating CNT : Molex 104085-0400, 104085-0410)
LED bar
LED Return
LED Power
signal
LED Power
4-pin connector
LED Return
signal
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PRODUCT INFORMATION
5. Input Terminal Pin Assignment
5.1. Input Signal & Power (Connector : P=TWO 196260-30041 or equivalent )
PIN NO SYMBOL FUNCTION
1 NC No Connection
2 CE * CE (For LCD internal use only. Do not connect)
3 CTL * CTL (For LCD internal use only. Do not connect)
4 GND Power Ground
5 RXIN0- Negative LVDS Differential Data Input ( )
g p (0)
6 RXIN0+ Positive LVDS Differential Data Input (0)
7 GND Power Ground
8 RXIN1- Negative LVDS Differential Data Input (1)
9 RXIN1+ Positive LVDS Differential Data Input (1)
10 GND Power Ground
11 RXIN2- Negative LVDS Differential Data Input (2)
12 RXIN2+ Positive LVDS Differential Data Input (2)
13 GND Power Ground
14 RXCLKIN- Negative LVDS Differential Clock Input (Clock)
15 RXCLKIN+ Positive LVDS Differential Clock Input (Clock)
16 GND Power Ground
17 RXIN3- Negative LVDS Differential Data Input (3)
18 RXIN3+ Positive LVDS Differential Data Input (3)
19 GND Power Ground
20 NC No Connection
21 NC No Connection
22 NC No Connection
23 GND Power Ground
24 GND Power Ground
25 GND Power Ground
26 VCC
27 VCC
28 VCC Power Supply : +5V
29 VCC
30 VCC
* If the system already uses the 1, 2pins, it should keep under GND level
The voltage applied to those pins should not exceed -200mV.
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PRODUCT INFORMATION
Note) Pin number starts from left side
PCB
Pin No. 1 Pin No. 30
#1 #30
UJU IS100-L30B-C23 or equivalent
#1 #30
Fig. Connector diagram
a. All GND pins should be connected together and also be connected to the
LCD's metal chassis.
b. All power input pins should be connected together.
c. All NC pins should be separated from other signal or power.
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PRODUCT INFORMATION
5.2 Timing Diagrams of LVDS For Transmitting
LVDS Receiver : Integrated T-CON
g
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PRODUCT INFORMATION
5.3 Back Light Unit
LED Bar input connector : Molex 104086-0410 or equivalent
104086 0410
(mating CNT : Molex 104085-0400, 104085-0410)
Pin No. Pin description Description
1 Vcc LED power input
2 RTN1 Channel 1 LED return
3 RTN2 Channel 2 LED return
4 RTN3 Channel 3 LED return
Note ) Pin number starts from Left side
Rear view of panel
#4 #1
Connector
Fig. Connector diagram
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5.4 Input Signals, Basic Display Colors and Gray Scale of Each Color
DATA SIGNAL
RED GREEN BLUE GRAY
DISPLAY
COLOR SCALE
(8bit)
G G G G G LEVEL
R0 R1 R2 R3 R4 R5 R6 R7 G0 G3 G6 B0 B1 B2 B3 B4 B5 B6 B7
1 2 4 5 7
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 -
BASIC
COLOR 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 -
MAGENT
1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 -
A
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
C 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
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
DARK 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
GRAY
SCALE : : : : : : : : : : : : : : : : : : R3~
OF : : : : : : : : : : : : : : : : : : R252
RED
LIGHT 1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R253
0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R254
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 R255
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
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
DARK 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
GRAY
SCALE : : : : : : : : : : : : : : : : : : G3~
OF : : : : : : : : : : : : : : : : : : G252
GREEN
LIGHT 0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 G253
0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 G254
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 G255
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
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
DARK 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
GRAY
SCALE : : : : : : : : : : : : : : : : : : B3~
OF : : : : : : : : : : : : : : : : : : B252
BLUE
LIGHT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1 B253
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 B254
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 B255
Note (1) 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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PRODUCT INFORMATION
6. Interface Timing
6.1 Timing Parameters ( DE only mode )
SIGNAL ITEM SYMBOL MIN. TYP. MAX. Unit NOTE
Clock 1/TC 56.66 72.33 90.42 MHz -
Hsync Frequency FH 37.13 47.4 59.25 KHz -
Vsync FV 47 60 75 Hz -
Active
Display TVD 768 768 768 Lines -
Vertical Period
Display Term
Vertical
TVB 776 790 948 lines -
Total
Active
Display THD 1366 1366 1366 Clocks -
Horizontal Period
Display Term
Horizontal
TH 1470 1526 1830 Clocks -
Total
Note (1) This product is DE only mode. The input of Hsync & Vsync signal does
not have an effect on normal operation.
(2) Test Point : TTL control signal and CLK at LVDS Tx input terminal in system
(3) Internal Vcc = 5.0V
(4) Best operation clock frequency is 72.33MHz(60Hz)
(5) Clock frequency = Frame frequency x TV(Typ) x TH(Typ)
(6) Max, Min variation range is at main clock Typ value (72.33MHz).
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PRODUCT INFORMATION
6.2 Timing diagrams of interface signal ( DE only mode )
TV
TVD TVB
DE
TH
THD
DE
DCLK
TC
DATA
SIGNALS
TC
TCH TCL
DCLK 0.5
VCC
TDS TDH
DISPLAY 0.5
DATA
VCC
TES
DE 0.5
VCC
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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
Module,
should be as the diagram below.
300 T110msec
0T250msec
0T350msec
1secT4
Back-Light
(Recommended)
500msecT5
100msecT6
T1 : VDD rising time from 10% to 90%
T2 : The time from VDD to valid data at power ON.
T3 : The time from valid data off to VDD off at power Off.
T4 : VDD off 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 LED 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.
p
Interface signal should not be kept at high impedance when the power is on.
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6.4 VDD Power Dip Condition
VDD Td
90%
80% VCC
GND
4.5V VDD 5.5V
If VDD(typ.) x 80% VCC VDD(typ) x 90%, then 0
Note (1) The above conditions are for the glitch of the input voltage.
(2) For stable operation of an LCD Module power, please follow them.
i.e., if typ VDD x 80% Vcc typ VDD x 90%, then Td should be less than 20ms.
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7. Outline Dimension PRODUCT INFORMATION
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8. General Precautions PRODUCT INFORMATION
8.1 Handling
(a) When the module is assembled it should be attached to the system firmly
assembled,
using all mounting holes. Be careful not to twist and bend the module.
(b) Refrain from strong mechanical shock and / or any force to the module.
In addition to damage, it may cause improper operation or damage to the module
and LED back light.
(c) Note that polarizer films are very fragile and could be damaged easily.
Do not press or scratch the surface harder than a HB pencil lead.
(d) Wipe off water droplets or oil immediately. If you leave the droplets for a long
time, staining or discoloration may occur.
(e) If the surface of the polarizer is dirty clean it using absorbent cotton or soft cloth
dirty, cloth.
(f) 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 cause permanent damage to the polarizer due to chemical
reaction.
(g) If the liquid crystal material leaks from the panel it should be kept away
panel,
from the eyes or mouth . In case of contact with hands, legs or clothes, it must
be washed away with soap thoroughly.
(h) Protect the Module from static, or the CMOS Gate Array IC would be damaged.
(i) Use finger-stalls with soft gloves in order to keep display clean during the
incoming i
i i inspection and assembly process.
ti d bl
(j) Do not disassemble the Module.
(k) Protection film for polarizer on the Module should be slowly peeled off just before use
so that the electrostatic charge can be minimized.
(l) Pins of I/F connector should not be touched directly with bare hands.
MODEL LTM185AT05 Page 27/29
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PRODUCT INFORMATION
8.2 Storage
We highly recommend to comply with the criteria in the table below
ITEM Unit Min. Max.
Storage Temperature ( ) 5 40
Storage Humidity (%rH) 35 75
Storage life 12 months
- The storage room should provide good ventilation and temperature control.
- Products should not be placed on the floor, but on the Pallet away from
a wall.
- Prevent products from direct sunlight, moisture nor water; Be cautious of
sunlight
a build up of condensation.
Storage Condition
- Avoid other hazardous environment while storing goods.
- If products delivered or kept in conditions of over the storage period of 3
months, the recommended temperature or humidity range,
we recommend you leave them at a temperature of 20 and a humidity
of 50% for 24 hours.
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 the item 6.3
"Power on/off sequence"
Power 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 converter power supply should
g p pp y
be connected directly with a minimized length. A longer cable between
the back light and the convertor may cause lower luminance of LED
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PRODUCT INFORMATION
8.4 Operation Condition Guide
(a) The LCD product should be operated under normal conditions.
Normal condition is defined as below;
- Temperature : 20 15
- Humidity : 65 20%
- Display pattern : continually changing pattern (Not stationary)
(b) If the product will b used i extreme conditions such as hi h t
th d t ill be d in t diti h high temperature,
t
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.
8.5
8 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 "stuck" 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 i advance when you di l th same pattern f a l
Pl t t in d h display the tt for long ti
time.
MODEL LTM185AT05 Page 29/29
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