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LB064V02 Liquid Crystal Display
Product Specification
SPECIFICATION FOR APPROVAL
( (
) Preliminary Specification ) Final Specification
Title
BUYER MODEL
6.4" V (640 X RGB X 480 ) TFT - LCD
SUPPLIER MODEL SUFFIX LG.Philips LCD Co., Ltd. LB064V02 TD01
SIGNATURE
DATE
APPROVED BY C. S. KYEONG / G. Manager
DATE Oct.13.2005
/ REVIEWED BY / S. D. Jung / Manager PREPARED BY H. Y. Park / Project Leader Please return 1 copy for your confirmation with your signature and comments.
Oct.13.2005
/
Oct.13.2005
Product Engineering Dept. LG. Philips LCD Co., Ltd
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LB064V02 Liquid Crystal Display
Product Specification
Contents
No
COVER CONTENTS RECORD OF REVISIONS 1 2 3 4 5 5-1 5-2 5-3 5-4 5-5 5-6 6 7 8 9 9-1 9-2 10
10-1 10-2
ITEM
Page
1 2 3 4 4 5 5 6 6 7 10 11 12 13 14 18 21 22 22 22 23 23 23 24
SUMMARY FEATURES GENERAL SPECIFICATION ABSOLUTE MAXIMUM RATINGS ELECTRICAL SPECIFICATIONS ELECTRICAL CHARACTREISTICS INTERFACE CONNECTIONS SIGNAL TIMING SPECIFICATIONS SIGNAL TIMING WAVEFORMS COLOR INPUT DATA REFERNECE POWER SEQUENCE OPTICAL SFECIFICATIONS MECHANICAL CHARACTERISTICS RELIABLITY INTERNATIONAL STANDARDS SAFETY EMC PACKING DESIGNATION OF LOT MARK PACKING FORM PRECAUTIONS
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Product Specification
RECORD OF REVISIONS
Revision No Revision Date
0.0 1.0 Aug. 30. 2005 Oct.13.2005
Page
First Draft (Preliminary) Final Version
Description
Note
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LB064V02 Liquid Crystal Display
Product Specification
1. Summary
This module utilizes amorphous silicon thin film transistors. A 6.4" active matrix liquid crystal display allows full color to be displayed.
2. Features
*The 6.4" screen produces a high resolution image that is composed of 307,200 pixel elements in a stripe arrangement. * Wide viewing angle technology is employed. [The most suitable viewing direction is in the 6 o'clock direction.] * By adopting an active matrix drive, a picture with high contrast is realized. * A thin, light and compact module is accomplished through the use of COF mounting technology. * By adopting a high aperture panel, high transmittance color filter and high transmission polarizing plates, transmittance ratio is realized. * Gray scale or the brightness of the sub-pixel color is determined with a 6-bit gray scale signal.
* CN1: GT101-30S-HR11 or equivalent * CN2: BHSR-02VS-1(JST)
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3. General Specification
CHARACTERISTIC ITEM Signal Interface Display Mode Screen Size (Diagonal) Outline Dimension Active Area Number Of dots Color depth Pixel Pitch Color Filter Array Power Consumption Weight Backlight Surface Treatment SPECIFICATION Digital Interface (CMOS TTL ) Normally White, Transmitting Type 6.4" ( 163.2 mm) 145.5mm (H) X 111.5mm (V) X 6.0mm (D) 130.56mm (H) X 97.92mm (V) 640(H) X 3(R,G,B) X 480(V) 6 Bit, 262,144 colors 0.068mm(H) RGB 0.204mm(V)
RGB vertical stripes 2.65 Watt(Typ) 130 g(Typ) CCFL ( 1ea) Top : Anti-glare & Hard coating Bottom : Anti-glare & Hard coating
4. Absolute Maximum Ratings
The following are maximum values which, if exceeded, may cause faulty operation or damage to the unit.
Table 1. ABSOLUTE MAXIMUM RATINGS
Values Parameter Symbol Min Max +4.0 +50 +60 Vdc C C at 25 5C 4-1,2,3 4-1,2 VCC TOP TST -0.3 0 -20 Units Notes
Power Input Voltage Operating Temperature Storage Temperature
[Note 4-1] This rating applies to all parts of the module and should not be exceeded. [Note 4-2] Maximum wet-bulb temperature is 60 . Condensation of dew must be avoided as electrical current leaks will occur, causing a degradation of performance specifications. [Note 4-3] The operating temperature only guarantees operation of the circuit and doesn't guarantee all the contents of Electro-optical specification. [Note 4-4] This Module must be grounded between LCM and System.
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Product Specification
5. Electrical Specifications 5-1. Electrical Characteristics
The LB064V02 requires two power inputs. One is employed to power the LCD electronics and to drive the TFT array and liquid crystal. The second input which powers the CCFL, is typically generated by an inverter. The inverter is an external unit to the LCD. Table 2. ELECTRICAL CHARACTERISTICS
Parameter MODULE : Power Supply Input Voltage Power Supply Input Current Power Consumption LAMP : Operating Voltage Operating Current VBL IBL fBL Vs PBL 325 3.0 40 20,000 340 6.0 60 2.04 370 6.5 80 1000 1200 2.25 VRMS mARMS kHz VRMS VRMS Watt Hrs
*2 Ta=25 Ta=30 at IBL=TYP *6 10[%]
Symbol Min VCC ICC Pc 3.0 -
Values Typ 3.3 160 0.53 Max 3.6 210 0.75
Unit
Notes
Vdc mA Watt *1 *1
Operating Frequency
Kick-Off Voltage (*4)
Power Consumption Life Time
Note) The design of the inverter must have specifications for the lamp in LCD Assembly. The performance of the Lamp in LCM, for example life time or brightness, is extremely influenced by the characteristics of the DC-AC inverter. So all the parameters of an inverter should be carefully designed so as not to produce too much leakage current from high-voltage output of the inverter. When you design or order the inverter, please make sure unwanted lighting caused by the mismatch of the lamp and the inverter(no lighting, flicker, etc) never occurs. When you confirm it, the LCD Assembly should be operated in the same condition as installed in your instrument. * 1. VCC=3.3V, 25C, fV (frame frequency) = 60Hz condition, whereas mosaic pattern(Typ),full black pattern(Max) is displayed. [LDO output voltage(3.3V) is applied.] * 2. This frequency range means the range to keep within 10% change of electrical and optical characteristics. * 3. This frequency range means not affecting to lamp life and reliability characteristics. (The lamp frequency should be selected as different as possible from display horizontal synchronous signal (Including harmonic frequency of this scanning frequency) to avoid "Beat" interference which may be observed on the screen as horizontal stripes like moving wave.
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This phenomenon is caused by interference between lamp (CCFL) lighting frequency and LCD horizontal synchronous signal.) * 4. The "MAX" of "Kick-Off Voltage" means the minimum voltage for inverter to turn on the CCFL . normally in the LCD module. However this isn't the values that we can assure stability of starting lamp on condition that the module is installed in your set. It should be careful that "Kick-Off Voltage" is changed by an increase of stray capacitance in your set, inverter method, value of ballast capacitor in your inverter and so on. Especially, the value of "Kick-Off Voltage" is higher in low temperature condition than in normal temperature condition, because impedance of CCFL is increased. The voltage above VS should be applied to the lamps for more than 1 second for start-up. Otherwise, the lamps may not be turned on. The used lamp current is the lamp typical current. * 5. The time needed to achieve not less than 95%brightness of the center part of lamp. The brightness of the lamp after being lighted for 5 minutes is defined as 100%. * 6. "Life time" is defined as the time that the lamp brightness decreases to 50% from original brightness at IBL=TYP; continuous lighting, Ta=25 . Requirements for a system inverter design, which is intended to have a better display performance, a better power efficiency and a more reliable lamp, are as follows. It shall help increase the lamp lifetime and reduce leakage current. Inverter should be designed to be subject to the conditions below A. The asymmetry rate of the inverter waveform should be less than 10%. B. The distortion rate of the waveform should be within 2 10%. * Inverter output waveform had better be more similar to ideal sine wave.
* Asymmetry rate: Ip
( I p - I -p |) / Irms * 100%
I -p *Distortion rate:
I p (or I -p) / Irms
C. There should not be any spikes in the waveform. D. Lamp current should not exceed the "MAX" value under the "Operating Temperature" (it is prohibited to exceed the "MAX." value even if it is operated in the guaranteed temperature). When lamp current exceed the maximum value for a long time, it may cause a smoking and Ignition. Therefore, it is recommended that the inverter have the current limited circuit that is used as a protection circuit and/or the lamp current-controlled inverter. Do not attaches a conducting tape to lamp connecting wire. If the lamp wire attach to a conducting tape, TFT-LCD Module has a low luminance and the inverter has abnormal action. Because leakage current is occurred between lamp wire and conducting tape.
5-2. Interface Connections
This LCD employs Two interface connections, a 30 pin connector is used for the module electronics interface and the other connectors is used for the integral backlight system. The electronics interface connector is a model GT101-30S-HR11 manufactured by LS Cable
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Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Pin No. 1 2
Name GND VCC VCC GND DCLK DE VSYNC HSYNC GND R0 R1 R2 R3 R4 R5 GND G0 G1 G2 G3 G4 G5 GND B0 B1 B2 B3 B4 B5 GND
SYMBOL HV LV
Description Ground Power (3.3V) Power (3.3V) Ground Data Input Clock Data Enable Signal Vertical Sync Signal Horizontal Sync Signal Ground Red Data 0[LSB] Red Data 1 Red Data 2 Red Data 3 Red Data 4 Red Data 5[MSB] Ground Green Data 0[LSB] Green Data 1 Green Data 2 Green Data 3 Green Data 4 Green Data 5[MSB] Ground Blue Data 0[LSB] Blue Data 1 Blue Data 2 Blue Data 3 Blue Data 4 Blue Data 5[MSB] Ground
Comment
Table 4. BACKLIGHT CONNECTOR PIN CONFIGURATION FUNCTION Power Supply For Lamp [High Voltage Side] Power Supply For Lamp [Low Voltage Side] REMARK 1 2
The backlight interface connector is a model BHSR-02VS-1 manufactured by JST or a compatible model manufactured by AMP. The matching connector part number is SM02B-BHSS-1-TB manufactured by JST or equivalent. 1. The wire color of high voltage side is pink. 2. The wire color of low voltage side is white. Connect the low voltage side of the DC/AC inverter used to drive the fluorescent tube to GND of the inverter circuit.
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5-3. Signal Timing Specifications
Table 4. TIMING TABLE ITEM DCLK Hsync Frequency Period Width Width-Active Vsync Period Width Width-Active Data Enable Horizontal back porch Horizontal front porch Vertical back porch Vertical front porch Symbol fCLK Thp tWH tWHA Tvp tWV tWVA tHBP tHFP tVBP tVFP Min 22 720 24 640 486 2 480 16 16 2 2 Typ 25 800 96 640 525 2 480 40 24 33 10 Max 28 880 130 640 540 4 480 56 tCLK 40 40 tHP 15 tHP tCLK Unit MHz Note
5-4. Signal Timing Waveforms
DCLK,Data Enable, Hsync, Vsync
High: 0.7VCC Low: 0.3VCC Condition : VCC =3.3V
Hsync t WH tHBP Date Enable
tHP
tWHA
tHFP
tVP tWV Vsync tVBP tWVA tVFP
Date Enable
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5-5. Color Input Data Reference
The brightness of each primary color (red,green and blue) is based on the 6-bit gray scale data input for the color ; the higher the binary input, the brighter the color. The table below provides a reference for color versus data input. Table 5. COLOR DATA REFERENCE
Input Color Data Color RED MSB
R5 R4 0 1 0 0 0 1 1 1 0 0 R3 0 1 0 0 0 1 1 1 0 0 ... 1 1 0 0 1 1 0 0 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 00 00 0 0 0 0 0 0 0 0 0 0 0 0 01 01 00 00 1 1 0 0 1 1 0 0 ... 0 0 0 0 01 01 1 1 1 1 1 1 0 0 1 1 0 0 00 10 00 00 0 0 0 0 0 0 0 0 ... 1 1 0 0 1 1 0 0 00 10 00 00 0 0 0 0 0 0 0 0 ... 1 1 1 1 0 1 R2 0 1 0 0 0 1 1 1 0 0 R1 0 1 0 0 0 1 1 1 0 0
GREEN LSB MSB
R0 G5 00 10 01 00 01 10 11 11 00 10 G4 0 0 1 0 1 0 1 1 0 0 G3 0 0 1 0 1 0 1 1 0 0 ... 0 0 0 0 0 0 0 0 00 00 00 10 0 0 0 0 G2 0 0 1 0 1 0 1 1 0 0 G1 0 0 1 0 1 0 1 1 0 0
BLUE LSB MSB
G0 B5 00 00 10 01 11 01 10 11 00 00 B4 0 0 0 1 1 1 0 1 0 0 B3 0 0 0 1 1 1 0 1 0 0 ... 0 0 0 0 ... 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 B2 0 0 0 1 1 1 0 1 0 0 B1 0 0 0 1 1 1 0 1 0 0
LSB
B0 0 0 0 1 1 1 0 1 0 0
Black Red Green Basic Color Blue Cyan Magenta Yellow White RED (00) RED (01) RED ... RED (62) RED (63) GREEN (00) GREEN (01) GREEN ... GREEN (62) GREEN (63) BLUE (00) BLUE (01) BLUE ... BLUE (62) BLUE (63)
0 1 0 0 0 1 1 1 0 0
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5-6. Power Sequence
Power supply for LCD ( VCC)
90% 10% 0V T1 T2
90% 10%
T5 T6 Valid data
T7
Interface Signal (Tx)
10% 0V
10%
T3
T4
Power for Lamp
OFF ON OFF
Table 6. POWER SEQUENCE TABLE
Parameter Min. T1 T2 T3 T4 T5 T6 T7 0 200 200 0 0 2 Value Typ. Max. 10 50 50 10 (ms) (ms) (ms) (ms) (ms) (ms) (s) Units
Note) 1. Please avoid floating state of interface signal at invalid period. 2. When the interface signal is invalid, be sure to pull down the power supply for LCD VCC to 0V.
5.7 Vcc Power Dip Condition
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6. Optical Specification
Optical characteristics are determined after the unit has been `ON' and stable for approximately 30 minutes in a dark environment at 25C. The values specified are at an approximate distance 50cm from the LCD surface at a viewing angle of and equal to 0. FIG. 1 presents additional information concerning the measurement equipment and method. FIG. 1 Optical Characteristic Measurement Equipment and Method Optical Stage(x,y) LCD Module Pritchard 880 or equivalent
50cm Table 7. OPTICAL CHARACTERISTICS
Ta=25C, VCC=3.3V, fV=60Hz, Dclk= 25MHz, IL=6.0mA Parameter Contrast Ratio Surface Luminance, white Luminance Variation Response Time Rise Time Decay Time Color Coordinates RED GREEN BLUE WHITE Viewing Angle x axis, right(=0) x axis, left (=180) y axis, up (=90) y axis, down (=270) r l u d 60 60 45 50 65 65 50 60 degree degree degree degree RX RY GX GY BX BY WX WY 0.551 0.299 0.290 0.513 0.124 0.108 0.283 0.299 0.581 0.329 0.320 0.543 0.154 0.138 0.313 0.329 0.611 0.359 0.350 0.573 0.184 0.168 0.343 0.359 5 (CR 10) TrR TrD 10 15 20 30 ms ms Symbol CR LWH WHITE Values Min 300 200 Typ 400 250 1.25 MAx 1.40 Units cd/m2 Notes 1 2 3 4
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Note) 1. Contrast Ratio(CR) is defined mathematically as Surface Luminance with all white pixels Contrast Ratio = Surface Luminance with all black pixels 2. Surface luminance is the center point across the LCD surface 50cm from the surface with all pixels displaying white. For more information see FIG 1. 3. The variation in surface luminance , The Panel total variation ( WHITE) is determined by measuring LN at each test position 1 through 5, and then dividing the maximum LN of 5 points luminance by minimum LN of 5 points luminance. For more information see FIG 2.
WHITE = Maximum(L1,L2, ... L5) / Minimum(L1,L2, ...
L5)
4. Response time is the time required for the display to transition from white to black (rise time, TrR) and from black to white(Decay Time, TrD). For additional information see FIG 3. 5. Viewing angle is the angle at which the contrast ratio is greater than 5. The angles are d e t e r m i n e d for the horizontal or x axis and the vertical or y axis with respect to the z axis which is normal to the LCD surface. For more information see FIG 4. 6. Gray scale specification Gray Level L0 L7 L15 L23 L31 L39 L47 L55 L63 * fV=60Hz Luminance [%] (Typ) 0.3 1.0 5.5 14.5 25.8 40.0 57.0 76.0 100
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FIG. 2 Luminance
H H/2 H/4 V/4 V/2
L2
L3
V
L1
Center Point
H,V : ACTIVE AREA
L4 L5
FIG. 3 Response Time The response time is defined as the following figure and shall be measured by switching the input signal for "black" and "white".
% 100 90 Optical Response 10 0 white
TrR
TrD
white black
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Product Specification
FIG. 4 Viewing angle
'
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7. Mechanical Characteristics
The contents provide general mechanical characteristics for the model LB064V02. In addition the figures in the next page are detailed mechanical drawing of the LCD.
Horizontal Outline Dimension Vertical Depth Horizontal Active Display Area Vertical Weight 97.92 ( 0.5) mm 130g (TYP), 140g(MAX) 145.5 ( 0.5)mm 111.5 ( 0.5)mm 6 ( 0.3)mm 130.56 ( 0.5) mm
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Note) Unit:[mm], General tolerance: 0.5mm
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Product Specification
Note) Unit:[mm], General tolerance: 0.5mm
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Notes : 1. Unspecified dimensional tolerances are 0.3mm. 2. Screw plated through the method of non-electrolytic nickel plating is preferred to reduce possibility that results in vertical and/or horizontal line defect due to the conductive particles from screw surface.
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8. Reliability
No. Test Items Test Condition REM ARK
1 2 3 4 5 6
High temperature storage test Low temperature storage test High temperature operation test Low temperature operation test
High Temperature and High Humidity Operation Test
Ta= 60C, 240h Ta= -20C, 240h Ta= 50C, 50%RH, 240h Ta= 0C, 240h
Ta=50 80%RH 240h
1 1 1 1
1
Vibration test (operating)
Random [10 300Hz,1.0G. X,Y,Z Direction.Test Time:one direction/1LCM 30min. Half Sine wave : 180G 2ms. Test Drop : one direction 1 Drop/1LCM.(Operation System) 0 ~ 10,000 feet (3,048m) 24Hr 0 ~ 40,000 feet (12,192m) 24Hr
7
Shock test (operating)
8
Altitude
operating storage / shipment
{ Result Evaluation Criteria } 1.In the standard condition, there shall be no practical problems that may affect the display function.
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9. International Standards 9-1. Safety
a) UL 60950-1:2003, First Edition, Underwriters Laboratories, Inc., Standard for Safety of Information Technology Equipment. b) CAN/CSA C22.2, No. 60950-1-03 1st Ed. April 1, 2003, Canadian Standards Association, Standard for Safety of Information Technology Equipment. c) EN 60950-1:2001, First Edition, European Committee for Electro technical Standardization(CENELEC) European Standard for Safety of Information Technology Equipment.
9-2. EMC
a) ANSI C63.4 "Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electrical Equipment in the Range of 9kHZ to 40GHz. "American National Standards Institute(ANSI), 1992 b) C.I.S.P.R. "Limits and Methods of Measurement of Radio Interface Characteristics of Information Technology Equipment." International Special Committee on Radio Interference. c) EN 55022 "Limits and Methods of Measurement of Radio Interface Characteristics of Information Technology Equipment." European Committee for Electro technical Standardization.(CENELEC), 1998 ( Including A1: 2000 )
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10. Packing 10-1. Designation of Lot Mark
a) Lot Mark A B C D E F G H I J K L M
A,B,C : SIZE(INCH) E : MONTH G : ASSEMBLY CODE Note 1. YEAR
Year Mark 2001 1 2002 2 2003 3 2004 4 2005 5
D : YEAR F : FACTORY CODE H ~ M : SERIAL NO.
2006 6
2007 7
2008 8
2009 9
2010 0
2. MONTH
Month Mark Jan 1 Feb 2 Mar 3 Apr 4 May 5 Jun 6 Jul 7 Aug 8 Sep 9 Oct A Nov B Dec C
3. FACTORY CODE
Factory Code Mark LPL Gumi K LPL Nanjing C HEESUNG D
4. SERIAL NO.
Mark 100001~199999, 200001~299999, 300001~399999, ...., A00001~A99999, ....., Z00001~Z99999
b) Location of Lot Mark Serial No. is printed on the label. The label is attached to the backside of the LCD module. This is subject to change without prior notice.
10-2. Packing Form
a) Package quantity in one box : 20 pcs b) Box Size : 335
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11. PRECAUTIONS
Please pay attention to the following when you use this TFT LCD module.
11-1. MOUNTING PRECAUTIONS
(1) You must mount a module using holes arranged in four corners or four sides. (2) You should consider the mounting structure so that uneven force(ex. Twisted stress) is not applied to the module. And the case on which a module is mounted should have sufficient strength so that external force is not transmitted directly to the module. (3) Please attach a transparent protective plate to the surface in order to protect the polarizer. Transparent protective plate should have sufficient strength in order to the resist external force. (4) You should adopt radiation structure to satisfy the temperature specification. (5) Acetic acid type and chlorine type materials for the cover case are not desirable because the former generates corrosive gas of attacking the polarizer at high temperature and the latter causes circuit break by electro-chemical reaction. (6) Do not touch, push or rub the exposed polarizers with glass, tweezers or anything harder than HB pencil lead. And please do not rub with dust clothes with chemical treatment. Do not touch the surface of polarizer for bare hand or greasy cloth.(Some cosmetics deteriorate the polarizer.) (7) When the surface becomes dusty, please wipe gently with absorbent cotton or other soft materials like chamois soaks with petroleum benzine. Normal-hexane is recommended for cleaning the adhesives used to attach front / rear polarizers. Do not use acetone, toluene and alcohol because they cause chemical damage to the polarizer. (8) Wipe off saliva or water drops as soon as possible. Their long time contact with polarizer causes deformations and color fading. (9) Do not open the case because inside circuits do not have sufficient strength. (10) The metal case of a module should be contacted to electrical ground of your system.
11-2. OPERATING PRECAUTIONS
(1) The spike noise causes the mis-operation of circuits. It should be lower than following voltage : V= 200mV(Over and under shoot voltage) (2) Response time depends on the temperature.(In lower temperature, it becomes longer.) (3) Brightness depends on the temperature. (In lower temperature, it becomes lower.) And in lower temperature, response time(required time that brightness is stable after turned on) becomes longer. (4) Be careful for condensation at sudden temperature change. Condensation makes damage to polarizer or electrical contacted parts. And after fading condensation, smear or spot will occur. (5) When fixed patterns are displayed for a long time, remnant image is likely to occur. (6) Module has high frequency circuits. Sufficient suppression to the electromagnetic interference shall be done by system manufacturers. Grounding and shielding methods may be important to minimized the interference.
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11-3. ELECTROSTATIC DISCHARGE CONTROL
Since a module is composed of electronic circuits, it is not strong to electrostatic discharge. Make certain that treatment persons are connected to ground through wrist band etc. And don't touch interface pin directly.
11-4. PRECAUTIONS FOR STRONG LIGHT EXPOSURE
Strong light exposure causes degradation of polarizer and color filter.
11-5. STORAGE
When storing modules as spares for a long time, the following precautions are necessary. (1) Store them in a dark place. Do not expose the module to sunlight or fluorescent light. Keep the temperature between 5 C and 35 C at normal humidity. (2) The polarizer surface should not come in contact with any other object. It is recommended that they be stored in the container in which they were shipped.
11-6. HANDLING PRECAUTIONS FOR PROTECTION FILM
(1) When the protection film is peeled off, static electricity is generated between the film and polarizer. This should be peeled off slowly and carefully by people who are electrically grounded and with well ion-blown equipment or in such a condition, etc. (2) The protection film is attached to the polarizer with a small amount of glue. If some stress is applied to rub the protection film against the polarizer during the time you peel off the film, the glue is apt to remain on the polarizer. Please carefully peel off the protection film without rubbing it against the polarizer. (3) When the module with protection film attached is stored for a long time, sometimes there remains a very small amount of glue still on the polarizer after the protection film is peeled off. (4) You can remove the glue easily. When the glue remains on the polarizer surface or its vestige is recognized, please wipe them off with absorbent cotton waste or other soft material like chamois soaked with normal-hexane.
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