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Product Information
Customer : General
SAMSUNG TFT-LCD SAMSUNG TFT-LCD
DATE : 27.Feb.2007
MODEL : LTA320WT-L05 MODEL : LTA320WT-L05
Any Modification of Specification is not allowed without SEC's Permission.
NOTE :
Customer's Approval
DATE Jin Su Jung
DATE 27.Feb.2007 DATE 27.Feb.2007
LCD Business Samsung Electronics Co . , LTD.
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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. Packing --------------------------------------------------------------------------------------------------- (24) 9. Marking & Others --------------------------------------------------------------------------------------- (25) 10. General Precaution ----------------------------------------------------------------------------------- (26) 10.1 Handling 10.2 Storage 10.3 Operation 10.4 Operation Condition Guide 10.5 Others
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Revision History
Date Feb 2, 2007 Feb 27, 2007 Rev. No 05.000 Pag e all Summary
First issued
06.000
all
Version revision
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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
Items Module Size Weight Pixel Pitch Active Display Area Surface Treatment Display Colors Number of Pixels Pixel Arrangement Display Mode Luminance of White Specification 760.0(HTYP) x 450.0(VTYP) 48.0(DMAX) 7,500 (max) 0.51075(H) x 0.51075(W) 697.6845(H) x 392.256(V) Haze 44% , Hard-coating (3H) 8 bit - 16.7M 1366 x 768 RGB vertical stripe Normally Black 500 (Typ.) Unit mm g mm mm colors pixel cd/m2 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. Item Power Supply Voltage Storage temperature Glass surface temperature (Operation) Center T. Uniformity Symbol VDD TSTG TOPR
T
Min. GND-0.5 -20 0 -
Max. 5.5 60 50
Unit V
Note (1) (2) (2),(5)
10 50 1.5 G G (3) (4)
Shock ( non - operating ) Vibration ( non - operating )
Snop Vnop
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
90
Fig. Temperature and Relative humidity range
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(5) Definition of test point 5mm 5mm
1 2
5
LCD Module (Active)
3 4
T should be less than 10
(
T = | TOPR - TMAX| )
TOPR : Temperature of the center of the glass surface (Test point 5) T1~ T4 : Temperature of each edge of the glass surface TMAX : The highest temperature of the glass surface
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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
(Ta = 25
Item Contrast Ratio (Center of screen) Response Time G-to-G (Avg)
2 C, VDD=5V, fv= 60Hz, fDCLK=75MHz, IL = 8 mArms(Hot) / Duty 100% )
Symbol C/R Tg YL Rx Ry Gx Gy Bx By Wx Wy L R U D Buni C/R 10 75 75 75 75 Condition Min. 1,200 400 Normal L,R=0 U,D=0 Viewing Angle Typ. 1,500 10 450 0.642 0.330 0.283 TYP. -0.03 0.602 0.145 0.062 0.280 0.290 72 10000 89 89 89 89 25 % (2) SR-3 Degree (6) EZ-Contrast % K (5) SR-3 (5) SR-3 TYP. +0.03 (5),(6) SR-3 Max. 16 cd/m2 Unit Note (1) SR-3 (3) RD-80S (4) SR-3
Luminance of White (Center of screen) Red
Color Chromaticity (CIE 1931)
Green
Blue
White Color Gamut Color Temperature Hor. Viewing Angle Ver. Brightness Uniformity (9 Points)
- 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
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Photo detector SR-3 RD-80S
Field 1 2
Photo detector
Field
SR-3 : 50 RD-80S : 50 EZ-Contrast :0 TFT - LCD Module LCD Panel
The center of the screen
- Definition of test point 228 128 683 1138 Active Area Test Point 384
640
Note (1) Definition of Contrast Ratio (C/R) : Ratio of gray max (Gmax) & gray min (Gmin) at the center point
of the panel
C/R=
G max G min
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 )
Buni = 100
( B max - B min) B max
Bmax : Maximum brightness Bmin : Minimum brightness Note (3) Definition of Response time : Sum of Tr, Tf Display data
Black (data off) White (data on) Black (data off)
TR Optical Instruments 100% Response 90%
TF
10% 0% TIME
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)
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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
Item Voltage of Power Supply Current of Power Supply (a) Black (b) White (c) N-Pattern fV fH fDCLK IRUSH IDD Symbol VDD Min. 4.5 48 44 65 Typ. 5.0 1000 1400 1500 60 48 75 Max. 5.5 2200 66 53 82 4 Unit V mA mA mA Hz kHz MHz A (4) (2),(3)
2C
Note (1)
Vsync Frequency Hsync Frequency Main Frequency Rush Current
Note (1) The ripple voltage should be controlled under 10% of VDD. (2) fV=60Hz, fDCLK = 75MHz, VDD = 5.0V, DC Current. (3) Power dissipation check pattern (LCD Module only) a) Black Pattern b) White Pattern c) N-Pattern
(4) Measurement Conditions VDD
100% 90% 10% GND
TRUSH=470 Rush Current IRUSH can be measured when TRUSH. is 470 .
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3.2 Back Light Unit
The back light unit contains 12 direct-lighting type CCFTs ( Cold Cathode Fluorescent Tube ). The characteristics of lamps are shown in the following tables. Ta=25 2 C
Item Lamp Current Lamp Voltage Operating Life Time Symbol IL VL Hr Min. 3.0 50,000 Typ. 8.0 1200 Max. 8.5 Unit mArms Vrms Hour (1) Note
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 = 8.0mArms, For single lamp only. ]
Socket
HOT 1 HOT 2 COLD 1 COLD 2
Inverter
LCD Module
COLD 11 COLD 12
HOT 11 HOT 12
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3.3 Inverter Input Condition & Specification
Items Input Voltage Input Current Lamp Current Frequency Backlight On/Off Dimming Control Symbol Vin IRUSH IO FLAMP ON OFF VDIM Conditions Min. Vin=24.0V Vdim=3.3V Vdim=3.3 V Vin=24.0 V Vin=24.0 V Vin=24.0 V Max Lum Min. Lum 23 7.5 60 2.4 0 3.3 Specifications Typ. 24 8.0 62.5 Max. 25 5.5 8.5 65 5.25 0.8 0 V V A mArms kHz V Ta=25 Initial Turn-on After 2 Hours Warm-Up @Vin=24V Unit Note
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4. Block Diagram
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5. Input Terminal Pin Assignment
5.1. Input Signal & Power
PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Description No Connection (Note1) No Connection (Note1) No Connection (Note1) GND RxIN0RxIN0+ GND RxIN1RxIN1+ GND RxIN2RxIN2+ GND RxCLKRxCLK+ PIN No. 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Connector : FI-E30S (JAE)
Description GND RxIN3RxIN3+ GND GND LVDS OPTION (Note 2) No Connection (Note1) GND GND GND Vin Vin Vin Vin Vin
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 VDD
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Note(1) Pin number starts from Right side
PCB
Pin No. 1 Pin No. 30
#1
#30
#1
#30
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.
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5.2. Inverter Input Pin Configuration
Connector : S14B-PHA-SM-TB(LF) (JST)
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pin Configuration(FUNCTION) 24 V 24 V 24 V 24 V 24 V GND GND GND GND GND No Connection Backlight On /Off [ON:2.4 - 5 V, OFF: 0 - 0.8 V] Dimming Control [0V:Min, 3.3V:Max] No Connection
5.3. Inverter Input Power Sequence
0.9 Vin 0.9 Vin
Vin (24V)
20msec [Min]
0.1 Vin
Dimming Control ( 0 ~ 3.3 V )
0.5sec [Min]
2.4V(On level)
0.5sec [Min]
0.8V(Off level)
Backlight On/Off
0.5sec [Min]
0.1sec [Min]
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5.4 LVDS Interface - LVDS Receiver : Tcon (merged) - Data Format (JEIDA & Normal)
LVDS pin TxIN/RxOUT0 TxIN/RxOUT1 TxIN/RxOUT2 TxOUT/RxIN0 TxIN/RxOUT3 TxIN/RxOUT4 TxIN/RxOUT6 TxIN/RxOUT7 TxIN/RxOUT8 TxIN/RxOUT9 TxIN/RxOUT12 TxOUT/RxIN1 TxIN/RxOUT13 TxIN/RxOUT14 TxIN/RxOUT15 TxIN/RxOUT18 TxIN/RxOUT19 TxIN/RxOUT20 TxIN/RxOUT21 TxOUT/RxIN2 TxIN/RxOUT22 TxIN/RxOUT24 TxIN/RxOUT25 TxIN/RxOUT26 TxIN/RxOUT27 TxIN/RxOUT5 TxIN/RxOUT10 TxOUT/RxIN3 TxIN/RxOUT11 TxIN/RxOUT16 TxIN/RxOUT17 TxIN/RxOUT23 JEIDA -DATA R2 R3 R4 R5 R6 R7 G2 G3 G4 G5 G6 G7 B2 B3 B4 B5 B6 B7 HSYNC VSYNC DEN R0 R1 G0 G1 B0 B1 RESERVED VESA -DATA R0 R1 R2 R3 R4 R5 G0 G1 G2 G3 G4 G5 B0 B1 B2 B3 B4 B5 HSYNC VSYNC DEN R6 R7 G6 G7 B6 B7 RESERVED
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5.5 Input Signals, Basic Display Colors and Gray Scale of Each Color
DATA SIGNAL COLOR DISPLAY (8bit) R0 BLACK BLUE GREEN BASIC COLOR CYAN RED MAGENTA YELLOW WHITE BLACK 0 0 0 0 1 1 1 1 0 1 DARK GRAY SCALE OF RED LIGHT 0 : : 1 0 RED BLACK 1 0 0 DARK GRAY SCALE OF GREEN LIGHT 0 : : 0 0 GREEN BLACK 0 0 0 DARK GRAY SCALE OF BLUE LIGHT 0 : : 0 0 BLUE 0 R1 0 0 0 0 1 1 1 1 0 0 1 : : 0 1 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 R2 0 0 0 0 1 1 1 1 0 0 0 : : 1 1 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 RED R3 0 0 0 0 1 1 1 1 0 0 0 : : 1 1 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 R4 0 0 0 0 1 1 1 1 0 0 0 : : 1 1 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 R5 0 0 0 0 1 1 1 1 0 0 0 : : 1 1 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1 1 1 0 0 0 R6 0 0 0 0 1 1 1 1 0 0 0 GREEN R7 G0 G1 G2 G3 G4 G5 G6 G7 0 0 0 0 1 1 1 1 0 0 0 0 0 1 1 0 0 1 1 0 0 0 : : 0 0 0 0 1 0 : : 1 0 1 0 0 0 : : 0 0 0 0 0 1 1 0 0 1 1 0 0 0 : : 0 0 0 0 0 1 : : 0 1 1 0 0 0 : : 0 0 0 0 0 1 1 0 0 1 1 0 0 0 : : 0 0 0 0 0 0 : : 1 1 1 0 0 0 : : 0 0 0 0 0 1 1 0 0 1 1 0 0 0 : : 0 0 0 0 0 0 : : 1 1 1 0 0 0 : : 0 0 0 0 0 1 1 0 0 1 1 0 0 0 : : 0 0 0 0 0 0 : : 1 1 1 0 0 0 : : 0 0 0 0 0 1 1 0 0 1 1 0 0 0 : : 0 0 0 0 0 0 : : 1 1 1 0 0 0 : : 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 0 1 1 0 0 1 1 0 0 0 B0 0 1 0 1 0 1 0 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 0 1 0 : : 1 0 1 B1 0 1 0 1 0 1 0 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 0 0 1 : : 0 1 1 B2 0 1 0 1 0 1 0 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 0 0 0 : : 1 1 1 BLUE B3 0 1 0 1 0 1 0 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 0 0 0 : : 1 1 1 B4 0 1 0 1 0 1 0 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 0 0 0 : : 1 1 1 B5 0 1 0 1 0 1 0 1 0 0 0 : : 0 0 0 0 0 0 : : 0 0 0 0 0 0 : : 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 B6 0 1 0 1 0 1 0 1 0 0 0 B7 0 1 0 1 0 1 0 1 0 0 0 R0 R1 R2 R3~ R252 R253 R254 R255 G0 G1 G2 G3~ G252 G253 G254 G255 B0 B1 B2 B3~ B252 B253 B254 B255 GRAY SCALE LEVEL
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 )
SIGNAL Clock Hsync Vsync Active Display Period Vertical Total Active Display Period Horizontal Total Frequency ITEM SYMBOL 1/TC FH FV TVD MIN. 65 44 48 TYP. 75 48 60 768 MAX. 82 53 66 Unit MHz KHz Hz lines NOTE -
Vertical Display Term
TV
773
838
1200
lines
-
THD
-
1366
-
clocks
-
Horizontal Display Term
TH
1460
1600
2000
clocks
-
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
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6.2 Timing diagrams of interface signal ( DE only mode )
TV TVD
DE
TH THD
DE
DCLK
TC
DATA SIGNALS
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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.
01000ms T5 (Recommend Value) 100ms T6 (Recommend Value)
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 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.
7. Outline Dimension (Front View)
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7. Outline Dimension (Rear View)
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8. PACKING
8.1 CARTON (Internal Package)
(1) Packing Form Corrugated fiberboard box and corrugated cardboard as shock absorber (2) Packing Method
Packing -Pallet Box
Direction be able to open it
Cushion-Foam
LCD Module
Cushion-Foam Pallet-Plastic
8.2 Packing Specification
Item Specification 24ea / (PackingPallet Box) Remark 1. 168 Kg / LCD (24ea) 2. 14 Kg / Cushion-pallet (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
LCD Packing
Pallet Packing Direction Total Pallet Size Total Pallet Weight
1Box / Pallet Vertical H x V x height 198.8 kg
1150mm(H) x 985mm(V) x 634mm(height) Pallet(8kg) + Module(7*24=168) + Cushion(4ea=14kg) + Pallet-BOX(8.8kg)
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9. 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
40mm
week year
Revision code Lot number
80mm
(5) Packing box attach
100mm
Part number
Box serial number
165mm
(6) Others 1. After service part Lamps cannot be replaced because of the narrow bezel structure.
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10. General Precautions
10.1 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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10.2 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.
10.3 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(CCFT) and may require higher startup voltage(Vs).
10.4 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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10.5 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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