LD-20706A-1 NOTICE This publication is the proprietary of SHARP and is copyrighted, with all rights reserved. Under the copyright laws, no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical for any purpose, in whole or in part, without the express written permission of SHARP. Express written permission is also required before any use of this publication may be made by a third party. The application circuit examples in this publication are provided to explain the representative applications of SHARP's devices and are not intended to guarantee any circuit design or permit any industrial property right or other rights to be executed. SHARP takes no responsibility for any problems related to any industrial property right or a third party resulting from the use of SHARP's devices, except for those resulting directly from device manufacturing processes. In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that occur in equipment using any of SHARP's devices, shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP's device. SHARP reserves the right to make changes in the specifications, characteristics, data, materials, structures and other contents described herein at any time without notice in order to improve design or reliability. Contact SHARP in order to obtain the latest specification sheets before using any SHARP's device. Manufacturing locations are also subject to change without notice. Observe the following points when using any device in this publication. SHARP takes no responsibility for damage caused by improper use of the devices. The devices in this publication are designed for general electronic equipment use. The appropriate design measures should be taken to ensure reliability and safety when SHARP's devices are used for equipment such as: Transportation control and safety equipment(i.e.,aircraft, trains, automobiles, etc.) Traffic signalsGas leakage sensor breakers Alarm equipmentVarious safety devices etc. SHARP's devices shall not be used for equipment that requires extremely high level of reliability, such as: Military and space applications Nuclear power control equipment Medical equipment for life support Contact a SHARP representative, in advance, when intending to use SHARP's devices for any "specific" applications other than those recommended by SHARP. Contact and consult with a SHARP representative if there are any questions about the contents of this publication. LD-20706A -2 1 Applicable TFT-LCD module This specification applies to the color 8.4VGA TFT-LCD module, LQ084V3DG02. 2 Overview This module is a color active matrix transmissive LCD module incorporating amorphous silicon TFT (Thin Film Transistor). It is composed of a color TFT-LCD panel, driver ICs, control circuits and power supply circuitry and a backlight unit. Graphics and texts can be displayed on a 640 x RGB x 480 dots panel with 262,144 colors by feeding 18 bit data signal (6bit/each of R,G,B), 4(four) timing signals, +3.3V DC power supply for TFT-LCD and AC power supply for backlight. (Note: Backlight-driving DC/DC converter and the wire harness are not built in this module.) Fine images with stripe aligned 307,200 pixels on 8.4 inch diagonal screen Adapting a wide viewing angle technology [best viewing angle: 6 o'clock direction] High contrast, thanks to active matrix drive system AG(Anti Glare) polarizing filter Light and slim compact module 12 o'clock direction is also available by the function to flip the screen horizontally or vertically) 3 Natural coloring reproducibility by employing normally-white-mode, which has good nature in coloring Image inversion both horizontally and vertically This module is adapted to RoHS compliance. Mechanical Specifications items Display size (Diagonal) specifications unit 21.4 (8.4") cm Active display area 170.88 (H) x 128.16 (V) mm Pixel format 640(H) x RGB x 480(V) pixel (1 pixel=R+G+B dots) - Pixel pitch 0.267 (H) x 0.267(V) mm Pixel configuration R,G,B vertical stripe - LCD mode Normally white/Twisted Nematic - Dimension * 199.5 (W) x 149.5 (H) x 11.6(D) mm 400 max g Mass *Fig.1 shows dimensions of the module. LD-20706A -3 4 Input Signal Assignment 4.1 TFT-LCD Panel driving section CN1 Used connector: IMSA-9637S-33Y902 (IRISO ELECTRONICS CO.,LTD.) Pin No. Symbol 1 GND 2 CK 3 Hsync 4 Vsync 5 GND 6 R0 7 R1 8 R2 9 R3 10 R4 11 R5 12 GND 13 G0 14 G1 15 G2 16 G3 17 G4 18 G5 19 GND 20 B0 21 B1 22 B2 23 B3 24 B4 25 B5 26 GND 27 ENAB 28 29 30 Vcc Vcc R/L 31 U/D 32 33 NC GND Function - Clock signal for sampling each datum Horizontal Sync signal Vertical Sync signal Polarity Negative Negative RED data signal (LSB) RED data signal RED data signal RED data signal RED data signal RED data signal (MSB) GREEN data signal (LSB) GREEN data signal GREEN data signal GREEN data signal GREEN data signal GREEN data signal (MSB) BLUE data signal (LSB) BLUE data signal BLUE data signal BLUE data signal BLUE data signal BLUE data signal (MSB) Data Enable signal (Control signal for image location in horizontal direction) Power supply in Power supply in Horizontal scanning direction control signal (Rightwards/Leftwards) Vertical scanning direction control signal (Upwards/downwards) [Note 4-1] [Note 4-2] [Note 4-2] The front shield case and back shield case is internally grounded to GND of the module. [Note 4-1] The horizontal display location is designated and controlled by rising timing of ENAB signal. However if ENAB signal is fixed to "Low", display location is designated by the default setting in the module. (Don't use the module by fixing ENAB to "High") .....See: Chapter 7-2 LD-20706A -4 [Note 4-2] (R/L=High, U/D= High) (R/L=Low, U/D= High) (R/L=High, U/D= Low) 4.2 (R/L=Low, U/D= Low) Backlight section Used connector: SM04B-SRSS-TB(LF)(SN) (JST) CN2 5 Corresponding connector: SHR-04V-S-B (JST) Pin no. Symbol Function 1 ch2 Power supply for LED (ch2 High voltage side) 2 ch1 Power supply for LED (ch1 High voltage side) 3 - Power supply for LED (ch1 Low voltage side) 4 -2 Power supply for LED (ch2 Low voltage side) Absolute Maximum Ratings Parameter *Ta=Ambient temperature Symbol Condition Ratings Unit Remark Input voltage VI Ta=25C -0.3 ~ Vcc+0.3 V [Note 5-1] Supply voltage Vcc Ta=25C 0 ~ +4.0 V - Storage temperature Tstg - -30 ~ +80 C Operating temperature (Panel surface) Topp - -30 ~ +80 C [Note 5-2,3,4,5] [Note 5-1] CK, R0 ~ R5, G0 ~ G5, B0 ~ B5, Hsync, Vsync, ENAB, R/L and U/D [Note 5-2] Humidity: Less than 95%RH at Ta 40C and Maximum wet-bulb temperature must not exceed 39C at Ta>40C, with no condensation. [Note 5-3] The operating temperature only guarantees operation of the circuit. For contrast, speed response, and other factors related to display quality, judgment is done using the ambient temperature Ta =25C. [Note 5-4] This rating applies to all parts of the module and should not be exceeded. [Note 5-5] Under the environment between 65 and 80, it may cause display non-uniformity issue, etc. LD-20706A -5 6 Electrical characteristics 6.1 TFT-LCD Panel driving section Parameter Symbol Supply voltage Current dissipation Allowed input ripple voltage Input voltage ("Low" state) Input voltage ("High" state) Input leakage current (low) Min Typ Max Unit Vcc Icc VRF VIL VIH +3.0 2.1 +3.3 200 - +3.6 360 100 0.8 - V mA mV p-p V V IOL1 -10.0 - 10.0 A -800 - - A -10.0 - 10.0 A -10.0 - 10.0 A [Note6-6] VI=Vcc IOL2 IOL Input leakage current (High) Ta25 Remarks IOH1 [Note6-1] [Note6-2]Vcc=3.3V [Note6-3] VI=0V [Note6-4] VI=0V [Note6-5] VI=0V IOH2 -10.0 - 10.0 A [Note6-4] VI=Vcc IOH3 - - 800 A [Note6-5] VI=Vcc [Note6-6] [Note6-1] Vcc turn-on/off conditions VCC 0 < t1 15ms data 0 < t2 10ms 0 < t3 100ms 0 < t4 1s t5 > 200ms Vcc-dip conditions 1) At 2.5V Vcc td 10ms 2) At Vcc < 2.5V Vcc dip conditions should also follow the Vcc turn-on/off conditions [Note6-2] Current dissipation (Typ.): RGB RGB GS0 GS3 GS7 .... RGB GS59 0.3V 0.3V time t4 t5 t1 .... t3 2.5V t RGB GS63 R G B R G B t2 VCC Current dissipation(Max): When VS(V63) and V0 stripe pattern are displayed alternately at intervals of two lines. (Figure below, Refer Page 10 for details of RGB) R G B R G B data 2.7V When Monochrome 16 level-gray-bar pattern is displayed (Figure below, Refer Page 10 for details of RGB) RGB VCC 0.9VCC 0.9VCC R V V V V S S 0 0 G V0 V0 VS VS B V V V V S S 0 0 R V0 V0 VS VS G V V V V S S 0 0 B V0 V0 VS VS .... LD-20706A -6 [Note6-3] CK, R0~R5, G0~G5, B0~B5, Hsync, Vsync, ENAB, R/L and U/D [Note6-4] CK, R0~R5, G0~G5, B0~B5, Hsync, Vsync, and ENAB [Note6-5] R/L [Note6-6] U/D R0R5 G0G5 B0B5 6 6 6 100 100 100 6 R0R5 6 G0G5 6 B0B5 100 VS VS 100 HS HS 100 ENAB ENAB 100 CK CK I/F Connector 100 10K R/L R/L 100 U/D U/D 10K 10uF Control IC LD-20706A -7 6.2 Backlight driving Section The backlight system is an edge-lighting type with white-LED. The characteristics of LED are shown in the following table. (It is usually required to measure under the following condition. condition: IL =100mA/Constant current drive,Ta=252) Parameter Symbol Min. Typ. Max. Unit LED voltage VL - 19.8 - V LED current range IL - 100 105 mA - 2 - - 3.96 - Number of circuit channel LED power consumption WL Remark Value for one channel [Note 6-7] W [Note 6-8] Life timeLCD module LL 50,000 Hour [Note 6-9,10] - - LED is connected in series. [Note 6-7] The LED backlight is composed of 2 channels which 6 [Note 6-8] Calculated value for reference ( IL x VL x2 channel) [Note 6-9]Lighting condition: The state of the LCD module installation: Landscape position and standing position Atmosphere temperature: 25 Lighting current: 100mA (Constant current driveContinuous turning on) Definition of Life time: Brightness becomes 50% of the original value .(under condition ) [Note 6-10]In the method of the parallel connection of the input of each channel and the drive, an excessive current flows to the channel side where the voltage is low, and, as a result, there is a possibility of causing the LED longevity decrease. It is preferable to do the fixed current drive only for each channel to each channel. 7 Timing Characteristics of Input Signals Timing diagrams of input signal are shown in Fig.2. 7.1 Timing Characteristics Parameter Symbol Clock Frequency 1/Tc "High" time Tch "Low" time Tcl Data Setup time Tds Hold time Tdh Hsync Period TH Min. 5 10 5 10 Typ. 25.18 - Max. 28.33 - Unit MHz ns ns ns ns 30.00 750 2 515 50 1 640 10 31.78 800 96 525 60 640 - 900 200 560 34 640 Tc-10 s clock clock line Hz line clock ns Remark Pulse width THp Vsync Period TV Frequency 1/Tv [Note7-1] Pulse width TVp Horizontal display period THd Phase difference between THc Hsync and clock Phase difference between TVh clock 0 TH-THp Hsync and Vsync Vertical display period TVs line 34 34 34 Note7-1) In case of lower frequency, the deterioration of display quality, flicker etc., may occur. Please use this module in more than 50Hz.(1/Tv) LD-20706A -8 7.2 Display Position in horizontal direction Display position in horizontal direction is designated by rising timing of ENAB signal. Parameter Symbol MIN TYP MAX Unit Tc -10 ENAB signal Setup time Tes 5 ns Pulse width Tep 2 640 TH-10 clock Phase difference between Hsync and THe 44 TH-664 clock Note ENAB signal When ENAB is fixed to "Low", the horizontal display will starts from the clock C104 (clock) as shown in Fig.2. When the phase difference is not greater than 104 clock, hold ENAB terminal in "High" state for more than (104-THe), otherwise display will start from C104 (clock). 7.3 Display position in vertical direction Display start position in vertical direction is fixed to the 34th line. The ENAB signal does not relate to Vertical display position. 7.4 Input signal and display on the screen Display position of input data UP D1,DH1 D2,DH1 D3,DH1 D640,DH1 D1,DH2 D2,DH2 D1,DH3 R G B D1,DH480 D640,DH480 G05B05 DataR05 Hsync signal Horizontal sync Vsync signal Vertical Sync (active) ENAB 0.8V 0.8V C1 0.8V THc 2.1V TVh 0.8V 2.1V L1 2.1V L2 Tes D2 TVs 2.1V D3 D4 L34 THd Tc D638 0.8V DH1 TV Tds 2.1V Tch TH Tcl DH2 D639 Tdh 0.8V 2.1V Input signal wavefor Tep D5 0.8V Fig 2. Vertical invalid data period TVp 2.1V THe D1 C103 C104(Number of clock) 0.8V Only when enable terminal is fixed "Low" Horizintal invalid data period 0.8V Data Enable signal G05B05 DataR05 CK Clock signal Hsync signal Horizontal sync. DH3 0.8V TVd D640 DH479 DH480 0.8V Vertical invalid data period 0.8V Horizintal invalid data period 0.8V LD-20706A9 LD-20706A -10 8 Input Signals, Basic Display Colors and Gray Scale of Each Color Colors & Data signal Gray R0 R1 R2 R3 R4 R5 G0 G1 G2 G3 G4 G5 B0 B1 B2 B3 B4 B5 Gray scale Gray Scale of Blue Gray Scale of Green Gray Scale of Red Basic Color Scale 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Black 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 Blue 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 Green 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 Cyan 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 Red 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 Magenta 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 Yellow 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 White GS0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Black GS1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x GS2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 Darker E E E E x E E E E O GS61 1 0 1 1 1 1 0 0 0 0 0 0 0 0 0 Brighter GS62 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 O GS63 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 Red GS0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Black GS1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 x GS2 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 Darker E E E E x E E E E O GS61 0 0 0 0 0 0 1 0 1 1 1 1 0 0 0 Brighter GS62 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 O GS63 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 Green GS0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Black GS1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 x GS2 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 Darker E E E E x E E E E O GS61 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 Brighter GS62 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 O GS63 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 Blue 0: Low level voltage, 1: High level voltage Each basic color can be displayed in 64 gray scales from 6 bit data signals. According to the combination of total 18 bit data signals, the 262,144-color display can be achieved on the screen. 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 0 0 1 0 0 0 0 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 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 LD-20706A -11 9 Optical Specification Ta=25C, Vcc=+3.3V Parameter Viewing angle Range Symbol Condition Min. Typ. Max. Unit Remark CR10 50 65 - (Deg.) [Note9-1,4] 11 40 55 - (Deg.) 12 45 60 - (Deg.) 400 600 - - Horizontal 21,22 Vertical Contrast ratio CR max Best viewing angle Response time Rise Tr Fall Chromaticity of white Luminance Center of screen - 5 15 ms [Note9-3] Td - 21 40 ms Center of screen x 0.234 0.292 0.354 - [Note9-4] 0.261 0.316 0.383 - 300 400 - cd/m2 y = 0 [Note9-2] IL=100mA Y The optical specifications are measured 30 minute after turning LED on and in a dark room or equivalent condition, according to the method shown in below.(Condition: IL =100mA) Photodetector Contrast ratio (BM-5A) Luminance /Chromaticity(SR-3) Photodetector (EZ-CONTRAST mm Field= Center of screen(=0 Center of screen(=0) TFT-LCD Module TFT-LCD Module Fig3-1 Viewing angle measurement method Fig3-2 Luminance/Contrast ratio/Response time/Chromaticity measurement method Fig3 Optical characteristics measurement method LD-20706A -12 [Note9-1] Definitions of viewing angle range: The best viewing angle of this module is slightly leaned to o'clock from normal line. In the field where exceeds this angle, gray-scale is reversed partially. The gray-scale in the field of 12 o'clock direction is brighter than that of o'clock direction and isn't reversed. [Note9-2] Definition of contrast ratio: The contrast ratio is defined as the following. Contrast Ratio (CR) Luminance (brightness) with all pixels white Luminance (brightness) with all pixels black [Note9-3] Definition of response time: The response time is defined as the following figure and shall be measured by switching the input signal between "black" and "white" alternatively. [Note9-4] This parameter should be measured at the center of the screen and 30 minutes after turn-on. The characteristics are measured when the driver circuit is not powered. LD-20706A-13 10 Display Qualities Please refer to the Outgoing Inspection Standard. 11 Handling Instruction 11.1 Assembling the module 1) Be sure to design the cabinet so that the module can be installed without any extra stress such as warp or twist. 2) Please power off the module before you connect or disconnect input connector. 3) Make sure to connect module's metal shield case to GND of DCDC converter circuit. If its connection is not made perfectly, some of the following problems may occur. a) Increase of noise caused by backlight b) Unstable output from DCDC converter circuit c) Possibly over-heat in some section 11.2 Instruction for assembling 1) Since the front polarizer is easily damaged, pay attention to avoid rubbing with something hard or sharp. 2) How to eliminate dust on polarizer. Blow dust away by N2 blower having measures of electrostatics Since the front polarizer is easily damaged, wiping dust off is not adequate. If the polarizer is soiled, it is suggested to peel dust off by using adhesive surface of adhesive tape. 3) When the metal section [shield case or shield back case] is soiled, wipe it off with dry and soft cloth. If not so easy, breathe upon it then wipe off. If the water droplet or fat is left for long term, it may cause stain or tarnish, it should be wipe off immediately. 4) Since TFT-LCD panel is made of glass substrate, dropping the panel or banging it against hard objects may cause cracking or fragmentation. 5) Since CMOS LSIs are incorporated in this module, please pay special care to electrostatic while handling it, and earth human body. 11.3 Caution in product design 1)The notes and cautions below should be followed when product is designed with this module. 2The module should be protected with cover to prevent salt content and/or water droplet. Take enough shielding countermeasure not to interfere to peripheral electronic device. 3) If a minute particle enters in the module and adheres to an optical material, it may cause display non-uniformity issue, etc. Therefore, fine-pitch filters have to be installed to cooling and inhalation hole if you intend to install a fan. 4) The LED used for this product is very sensitive to the temperature. Luminance decreases rapidly when it is used for a long time under the environment of the high temperature. Please consult our company when it is used under the environment like the above mentioned. LD-20706A-14 11.4 Others The LCD has the nature that its performance is degradation by ultra-violet light. Don't leave the LCD module in direct sunlight or strong ultra violet ray. If stored at the temperatures lower than the rated storage temperature, the LC may freeze and it may cause LCD panel damage. If storage temperature exceeds the specified rating, the molecular orientation of the LC may change to that of a liquid, and they may not revert to their original state. Store the module in normal room temperature. The liquid crystal may leak out when the LCD is broken. If the liquid crystal drip into the eyes or mouth washes it out immediately. The caution to other ordinal electronic component should be followed also. Avoid the LCD to use and leave in the atmosphere with condensation and/or the high concentration of corrosive gasses described below;- Sulfurous gasses (ex; SO2(sulfur dioxide), CS2(carbon disulfide), H2S(hydrogen sulfide)), Cl2(chlorine), HCl(hydrogen chloride), NH3(ammonia) and so on. 12 Packing Form 12.1 Fig.4 shows packaging form. 12.2 Carton stock conditions a) Maximum number of Carton being stuck: 6 b) Maximum number of product contained: 10 Unit c) Carton size: 408mm (W) x 203mm (H) x 244mm (D) d) Total mass (for 10Unit): 6kg max e) Carton stock environment: ) Temperature: 0 ~ 40C 2) Humidity: Up to 60%RH 3) Ambiance: No gasses bite into electronic components and wiring materials 4) Period: Approximately 3month 5) Unpacking: To prevent LCD module from damaging by ESD, unpack the module with effective measure after controlling humidity 50%RH or more. 13 Marking of product name Model number Lot number Quantity of module LD-20706A -15 14 Miscellaneous a) Variable resister has been set optimally before shipment, so do not change any adjusted value. If adjusted value is changed, the specification may be not satisfied. b) Don't disassemble this module, it may cause malfunction. c) Image retention may occur when the fixed image is display for long time. d) Liquid crystal panel drive input FFC/FPC specification The following FFC/FPC is recommended for input connector. [IMSA-9637S-33Y902 (IRISO Electronics co.,ltd.) , 33pin 0.5mm pitch)] The terminal of FFC/FPC of input connector recommend to be gold or gold plated. Because point of contact of the connection is gold plated. e) When any question or issue occurs, it shall be solved by mutual discussion. 15 Reliability Test Items No. Test parameter Conditions 1 High temperature storage test Leaves the module at Ta=80C for 240h 2 Low temperature storage test Leaves the module at Ta=-30C for 240h 3 High temperature Operates the module at Ta=40C;90~95%RH for 240h & high humidity operation test (No condensation) 4 High temperature operation test Operates the module with +80C at panel surface for 240h 5 Low temperature operation test Operates the module at Ta=-30C for 240h 6 Strength against ESD 200V200pF [0] one time for each terminal 7 Shock test Max. acceleration : 686m/s2(70G) Pulse width : 6ms, half sine wave (non- operating) Direction : X,Y,Z 8 Vibration test once for each direction. Frequency : 1057Hz/Vibration width (one side):0.15mm : 57500Hz/ acceleration:19.6m/s2 Sweep time : 11 minutes (non- operating) Test period : 3 hours 9 Thermal shock test (1 hour for each direction of X,Y,Z) -30C[0.5h] ~ +80C[0.5h] /50 cycle [Result Evaluation Criteria] Under the display quality test conditions with normal operation state, these shall be no change which may affect practical display function. [Note] The directions of X, Y, Z are defined as below: Z X Y LD-20706A -16 16. Storage conditions <Environmental condition range of storage temperature and humidity> Temperature 0 to 40 degrees Celsius Relative humidity 95% and below Note Please refer below as a mean value of the environmental conditions. Summer time temperature 20 to 35 degrees Celsius humidity Winter time 85% and below temperature 5 to 15 degrees Celsius humidity 85% and below Please maintain within 240 hours of accumulated length of storage time, with conditions of 40 degrees Celsius and room humidity of 95%. Direct sun light Please keep the product in a dark room or cover the product to protect from direct sun light. Atmospheric condition Please refrain from keeping the product with possible corrosive gas or volatile flux. Prevention of dew * Please store the product carton either on a wooden pallet or a stand / rack to prevent dew. Do not place directly on the floor. In addition, to obtain moderate ventilation in between the pallet's top and bottom surfaces, pile the cartons up in a single direction and in order. * Please place the product cartons away from the storage wall. * Please maintain the storage area with an appropriate ventilation. It is recommendable to furnish the storage area with equipments such as ventilation systems. * Please maintain the ambient temperature within the range of natural environmental fluctuation. Storage period Within above mentioned conditions, maximum storage period should be one year. LD-20706A-18