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1/31 page LTM185AT01 model product information product information samsung tft-lcd product information model : LTM185AT01 samsung tft samsung tft - - lcd product information lcd product information model model : LTM185AT01 : LTM185AT01 issued date : 2008-09-02 note : this is product information is subject to ch ange after 3 months of issuing date. application engineering part 1, hd lcd division samsung electronics co . , ltd. www.datasheet.co.kr datasheet pdf - http://www..net/
2/31 page LTM185AT01 model product information product information contents general description ------------------------------- -------------------------------------------------- ( 3) 1. absolute maximum ratings ----------------------- -------------------------------------------- (4) 2. optical characteristics ------------------------ --------------------------------------------------- (6) 3. electrical characteristics --------------------- ------------------------------------------------- (1 1) 3.1 tft lcd module 3.2 back light unit 4. block diagram ---------------------------------- ------------------------------------------------- (1 6) 4.1 tft lcd module 4.2 back light unit 5. input terminal pin assignment ------------------ -------------------------------------------- (17) 5.1 input signal & power 5.2 lvds interface 5.3 back light unit 5.4 input signals, basic display colors and gray sc ale of each color 6. interface timing ------------------------------- -------------------------------------------------- ( 23) 6.1 timing parameters (de only mode) 6.2 timing diagrams of interface signal (de only mo de) 6.3 power on/off sequence 6.4 lvds input characteristics 6.5 vdd power dip condition 7. outline dimension ------------------------------ ------------------------------------------------- (2 7) 8. general precaution ----------------------------- ------------------------------------------------- (2 9) 8.1 handling 8.2 storage 8.3 operation 8.4 others www.datasheet.co.kr datasheet pdf - http://www..net/
3/31 page LTM185AT01 model product information product information LTM185AT01 product is a color active matrix liquid crystal display (lcd) that uses amorphous silicon tft (thin film transistor) as swi tching components. this model is 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. workstation & desktop monitors display terminals for av application products monitors for industrial machine * if the module is used to other applications besid es the above, please contact sec in advance. features general description description applications high contrast ratio, high aperture structure tn (twisted nematic) mode wide viewing angle high speed response hd (1366 x 768 pixels) resolution low power consumption 2 ccfls (cold cathode fluorescent lamp) de (data enable) only mode lvds (low voltage differential signaling) interface (1pixel/clock) compact size design rohs compliance tco03 compliance general information tbd power consumption mm 0.300(h) x 0.300(w) pixel pitch mm 409.8(h) x 230.4(v) active display area note haze 25%, hard-coating(3h) surface treatment cd/ O 250(typ.) luminance of white normally white display mode rgb vertical stripe pixel arrangement pixel 1366 x 768 number of pixels colors 16.7m ( 6bit hi-frc ) display colors unit specification items www.datasheet.co.kr datasheet pdf - http://www..net/
4/31 page LTM185AT01 model product information product information mechanical information (1) v 6.5 gnd-0.5 v dd power supply voltage (4) g 1.5 - v nop vibration ( non - operating ) (3) g 50 - s nop shock ( non - operating ) (2) 50 0 t opr glass surface temperature (operation) (2) 60 -25 t stg storage temperature note unit max. min. symbol item 1. absolute maximum ratings if the condition exceeds maximum ratings, it can ca use malfunction or unrecoverable damage to the device. note (1) ta= 25 2 c note (1) mechanical tolerance is 0.5mm unless there is a special comment. tbd 17.0 - - max. lcd module only g - - weight mm - - depth (d) mm 254.6 - vertical (v) w/o inverter assy mm 430.37 - horizontal (h) module size note unit typ. min. item www.datasheet.co.kr datasheet pdf - http://www..net/
5/31 page LTM185AT01 model product information product information (2) temperature and relative humidity range are sho wn in the figure below. a. 90 % rh max. (ta 39 c) b. maximum wet-bulb temperature at 39 c 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 ax is fig. temperature and relative humidity range (39,90) (39,90) (60,27.7) (60,27.7) (50,50.4) (50,50.4) ( ( - - 25,5) 25,5) (39,90) (39,90) (60,27.7) (60,27.7) (50,50.4) (50,50.4) ( ( - - 25,5) 25,5) www.datasheet.co.kr datasheet pdf - http://www..net/
6/31 page LTM185AT01 model product information product information 2. optical characteristics * c.g.l : color grayscale linearity (continue to the next page) the optical characteristics should be measured in a dark room or equivalent. measuring equipment : sr-3, rd-80s (topcon), ez-contrast (eldim) (ta = 25 2 c, vdd=5v, fv= 60hz, fdclk=85.8mhz, il = 7.5marms) sr-3 (7),(8) (6) sr-3 cd/m2 - 300 - y l luminance of white (center of screen) (5) rd-850s 10 5 - tr+ tf on/off response time msec normal l,r =0 u,d =0 viewing angle (9) 0.02 0.011 - u'v' white c.g.l - 0.468 - wv' - 0.198 - wu' white - tbd - bv' - tbd - bu' blue - tbd - gv' - tbd - gu' green - tbd - rv' - tbd - ru' red color chromaticity (cie 1976) 0.329 wy - 0.313 - wx white (0.075) by (0.145) bx blue (0.605) gy (0.295) gx green (0.335) ry (0.650) rx red color chromaticity (cie 1931) (3) sr-3 - 1000 - c/r contrast ratio (center of screen) note unit max. typ. min. condition symbol item www.datasheet.co.kr datasheet pdf - http://www..net/
7/31 page LTM185AT01 model product information product information (4) sr-3 % 25 - - b uni brightness uniformity (9 points) k - 6500 - - color temperature % - 72 - - color gamut note unit max. typ. min. condition symbol item - 80 70 d - 80 70 u ver. - 80 70 r (8) ez- contrast degrees - 80 70 cr 10 l hor. viewing angle note (1) test equipment setup the measurement should be executed in a stable, win dless and dark room between 30min after lighting the back light at the given te mperature for stabilization of the back light. this should be measured in the c enter of screen. single lamp current : 7.5ma environment condition : ta = 25 2 c 1 sr-3 field photodetector photodetector lcd panel tft - lcd module the center of the screen sr-3 : 50 M rd-80s : 50 M field www.datasheet.co.kr datasheet pdf - http://www..net/
8/31 page LTM185AT01 model product information product information note (2) definition of 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 note (4) definition of 9 points brightness uniform ity buni b b b = - 100 ( max min) max bmax : maximum brightness bmin : minimum brightness cr g g = max min gmax : luminance with all pixels white gmin : luminance with all pixels black 6 8 7 9 3 2 1 4 5 137 683 1229 77 384 691 active area : test point www.datasheet.co.kr datasheet pdf - http://www..net/
9/31 page LTM185AT01 model product information product information note (5) definition of response time a. on/off response time : sum of tr, tf note (6) definition of luminance of white : luminan ce of white at center point note (7) definition of color chromaticity (cie 1931 , cie1976) color coordinate of red, green, blue & white at cent er point note (8) definition of viewing angle : viewing angle range (cr 10) 100% 90% 10% 0% optical instruments response display data white(tft off) black(tft on) white(tft off) www.datasheet.co.kr datasheet pdf - http://www..net/
10/31 page LTM185AT01 model product information product information note (9) color grayscale linearity a. test image : 100% full white pattern with a test pattern as below b. test pattern : squares, 40mm by 40mm in size, fi lled with 255, 225, 195, 165, 135 and 105 grays steps should be arranged at the center of the screen. c. test method -1 st 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 coordinate s. - next gray step : move a 225 gray square into the c enter and measure both luminance and coordinates, too. d. test evaluation where a, b : 2 gray levels found to have the larges t color differences between them i.e. get the largest u and v of each 6 pair of u and v and calculate the uv. d u' v' = (u' - u' ) + (v' - v' ) a b 2 a b 2 www.datasheet.co.kr datasheet pdf - http://www..net/
11/31 page LTM185AT01 model product information product information 3. electrical characteristics 3.1 tft lcd module the connector for display data & timing signal shoul d be connected. ta = 25 c common mode voltage input voltage range (single-ended) differential input voltage lvds skew differential input voltage for lvds receiver threshold (4) v 2.4 0 v in (4) v 2.4- |v id |/2 1.2 0+ |v id |/2 v cm (4) mv 600 200 |v id | (3) 300 -300 t skew (7) a 3 - - i rush rush current mhz 108.8 85.8 71.4 f dclk main frequency khz 60.6 47.9 39.9 f h hsync frequency hz 76 60 50 f v vsync frequency ma tdb tbd - (c) dot ma - tbd - (b) white (5),(6) ma - tbd - i dd (a) black current of power supply mv - - -100 low (2) mv +100 - - high lvds input characteri stics (1) v 5.5 5.0 4.5 v dd voltage of power supply note unit max. typ. min. symbol item note (1) the ripple voltage should be controlled un der 10% of v dd . www.datasheet.co.kr datasheet pdf - http://www..net/
12/31 page LTM185AT01 model product information product information (2) differential receiver voltage definitions and propa gation delay and transition time test circuit a. all input pulses have frequency = 10mhz, t r or t f =1ns b. c l includes all probe and fixture capacitance note a. note b. (4) definition of v id and v cm using single-end signals (3) lvds receiver dc parameters are measured under static and steady conditions which may not be reflective of its performance in t he end application. where tskew : skew between lvds clock & lvds data, t : 1 period time of lvds clock cf) (-/+) of 300psec means lvds data goes before or after lvds clock. differential lvds data rx +/- t skew t v diff = 0v v diff = 0v differential lvds clk www.datasheet.co.kr datasheet pdf - http://www..net/
13/31 page LTM185AT01 model product information product information (5) fv=60hz, fdclk = 85.8mhz, vdd = 5.0v, dc current. (6) power dissipation check pattern (lcd module onl y) rush current i rush can be measured when t rush . is 470 ? . t rush =470 ? 100% gnd 90% 10% v dd (7) measurement condition a) black pattern b) white pattern c) dot pattern www.datasheet.co.kr datasheet pdf - http://www..net/
14/31 page LTM185AT01 model product information product information 3.2 back light unit the back light unit is an edge type with 2 ccfls( c old cathode fluorescent lamp). the characteristics of those lamps are shown in the following table. ta=25 2 c 25 : (1,170) (5) vrms 0 : (1,480) - - vs startup voltage 1.5554 1.414 1.2726 wdis distortion rate (4) % 10 - - wasy asymmetry rate inverter waveform (3) hour - - 50,000 hr operating life time (2) khz (60) - (45) f l lamp frequency vrms - 700 - v l lamp voltage (1) marms (8.0) 7.5 (3.0) i l lamp current note unit max. typ. min. symbol item note (1) specified values are for a single lamp. lamp current is measured with current meter for hig h frequency as shown below. refer to the following block diagram of the back li ght unit for more information. fig. measurement point of lamp current hot cold i 1 i2 inverter hot cold a a lcd module www.datasheet.co.kr datasheet pdf - http://www..net/
15/31 page LTM185AT01 model product information product information (2) lamp frequency which may produce interference w ith horizontal synchronous frequency may cause line flow on the display. therefore lamp f requency should be detached from the horizontal synchronous frequency and its harmonics a s far as possible in order to avoid interference. (3) life time (hr) is defined as the time when brig htness of a lamp unit itself becomes 50% or less than its original value at the condition of ta = 25 2 c and i l = 7.5marms (4) designing a system inverter intended to have bet ter display performance, power efficiency and lamp reliability. they would help increase the lamp lifetime and redu ce leakage current. a. the measurement should be done at typical lamp c urrent. b. the asymmetry rate of the inverter waveform shou ld be less than 10%. c. the distortion rate of the waveform should be 2 with 10% tolerance. - inverter output waveform had better be more simila r to ideal sine wave. | | i i i rms p - p - 100 asymmetry rate distortion rate (5) if an inverter has shutdown function, it should keep its output for over 1 second even if the lamp connector is open. otherwise the la mps may not be turned on. fig. wave form of the inverter | | i i rms p | | i i rms - p or i p i -p www.datasheet.co.kr datasheet pdf - http://www..net/
16/31 page LTM185AT01 model product information product information 4. block diagram 4.2 back light unit 4.1 tft lcd module lamp(ccel) lamp(ccel) 12 lamp(ccel) lamp(ccel) 12 hot cold hot cold power circuit column driver circuit tft-lcd (1366 x rgb x 768 pixels) s1 s1366 timing controller source driver ics lvds (rx) rsds(tx) control signal rsds cn1 (30pin) lvds pair #1 lvds pair #2 +5.0v v dd control signal www.datasheet.co.kr datasheet pdf - http://www..net/
17/31 page LTM185AT01 model product information product information 5. input terminal pin assignment 5.1. input signal & power ( connector : p-two 187034 -30091 or equivalent ) * if the system already uses the 1, 2pins, it shoul d keep under gnd level the voltage applied to those pins should not exceed -200mv. vcc 30 vcc 29 vcc 28 vcc 27 power supply : +5v vcc 26 power ground gnd 25 power ground gnd 24 power ground gnd 23 no connection nc 22 no connection nc 21 no connection nc 20 power ground gnd 19 positive lvds differential data input (3) rxin3+ 18 negative lvds differential data input (3) rxin3- 17 power ground gnd 16 positive lvds differential clock input (clock) rxclkin+ 15 negative lvds differential clock input (clock) rxclkin- 14 power ground gnd 13 positive lvds differential data input (2) rxin2+ 12 negative lvds differential data input (2) rxin2- 11 power ground gnd 10 positive lvds differential data input (1) rxin1+ 9 negative lvds differential data input (1) rxin1- 8 power ground gnd 7 positive lvds differential data input (0) rxin0+ 6 negative lvds differential data input (0) rxin0- 5 power ground gnd 4 no connection nc 3 no connection (for dvr : ce) ce 2 no connection (for dvr : ctl) ctl 1 function symbol pin no www.datasheet.co.kr datasheet pdf - http://www..net/
18/31 page LTM185AT01 model product information product information note) pin number starts from left side a. all gnd pins should be connected together and a lso be connected to the lcds metal chassis. b. all power input pins should be connected togethe r. c. all nc pins should be separated from other signa l or power. pin no. 1 pin no. 30 pcb fig. connector diagram #1 #30 #1 #30 www.datasheet.co.kr datasheet pdf - http://www..net/
19/31 page LTM185AT01 model product information product information 5.2 lvds interface 5.2.1 pixel data note : the lcd module uses a 100ohm resistor between posit ive and negative lines of each receiver input. df14h-20p-1.25h 5 6 8 9 11 12 14 15 17 18 www.datasheet.co.kr datasheet pdf - http://www..net/
20/31 page LTM185AT01 model product information product information 5.3.3 timing diagrams of lvds for transmitting lvds receiver : integrated t-con www.datasheet.co.kr datasheet pdf - http://www..net/
21/31 page LTM185AT01 model product information product information 5.4 back light unit yeonho 35001hs-02l or equivalent connect or part no. ground white cold C 1 2 high voltage red hot C 1 1 lower ground white cold C 1 2 high voltage red hot C 1 1 upper function color input pin no. www.datasheet.co.kr datasheet pdf - http://www..net/
22/31 page LTM185AT01 model product information product information 5.5 input signals, basic display colors and gray sc ale of each color b255 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 blue b254 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 b253 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 : : : : : : : : : : : : : : : : : : b3~ b252 : : : : : : : : : : : : : : : : : : b2 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 b1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 dark light b0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 black gray scale of blue g255 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 green g254 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 g253 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 : : : : : : : : : : : : : : : : : : g3~ g252 : : : : : : : : : : : : : : : : : : g2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 g1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 dark light g0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 black gray scale of green r255 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 red r254 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 r253 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 1 : : : : : : : : : : : : : : : : : : r3~ r252 : : : : : : : : : : : : : : : : : : r2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 r1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 dark light r0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 black gray scale of red - 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 white - 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 yellow - 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 magent a - 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 red - 1 1 1 1 1 1 1 1 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 0 0 0 0 0 0 0 0 green - 1 1 1 1 1 1 1 1 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 0 0 0 0 0 0 0 0 black basic color b7 b6 b5 b4 b3 b2 b1 b0 g 7 g6 g 5 g 4 g3 g 2 g 1 g0 r7 r6 r5 r4 r3 r2 r1 r0 blue green red gray scale level data signal display (8bit) color note (1) definition of gray : rn : red gray, gn : green gray, bn : blue gray (n = gr ay level) input signal : 0 = low level voltage, 1 = high leve l voltage www.datasheet.co.kr datasheet pdf - http://www..net/
23/31 page LTM185AT01 model product information product information 6. interface timing 6.1 timing parameters ( de only mode ) - clocks 2046 1792 1446 t h horizontal total - clocks - 1366 - t hd active display period horizontal display term - lines 1108 798 776 t vb vertical total - lines - 768 - t vd active display period vertical display term - hz 76 60 50 f v vsync - khz 60.6 47.9 39.9 f h hsync - mhz 108.8 85.8 71.4 1/t c frequency clock note unit max. typ. min. symbol item signal 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 = 3.3v www.datasheet.co.kr datasheet pdf - http://www..net/
24/31 page LTM185AT01 model product information product information 6.2 timing diagrams of interface signal ( de only m ode ) data signals de t vd t v t h d clk t c de t hd t vb 0.5 v cc t es t ds t dh t ch t cl t c de display data d clk 0.5 v cc 0.5 v cc www.datasheet.co.kr datasheet pdf - http://www..net/
25/31 page LTM185AT01 model product information product information 6.3 power on/off sequence to prevent a latch-up or dc operation of the lcd mo dule, the power on/off sequence should be as the diagram below. t1 : v dd rising time from 10% to 90% t2 : the time from v dd to valid data at power on. t3 : the time from valid data off to v dd off at power off. t4 : v dd off time for windows restart t5 : the time from valid data to b/l enable at powe r on. t6 : the time from valid data off to b/l disable at power off. the supply voltage of the external system for the m odule input should be the same as the definition of v dd . apply the lamp voltage within the lcd operation ran ge. when the back light turns on before the lcd operation or the lcd turns off befor e the back light turns off, the display may momentarily show abnormal screen. in case of v dd = off level, please keep the level of input signals low or keep a high impedance. t4 should be measured after the module has been ful ly discharged between power off and on period. interface signal should not be kept at high impedan ce when the power is on. 300 ? ?? ? ? t1 ? 10msec 0 ? t2 ? 50msec 0 ? t3 ? 50msec 1sec ? t4 back-light (recommended) 500msec ? t5 100msec ? t6 www.datasheet.co.kr datasheet pdf - http://www..net/
26/31 page LTM185AT01 model product information product information 6.4 vdd power dip condition note (1) the above conditions are for the glitch of the input voltage. (2) for stable operation of an lcd module power, pl ease follow them. i.e., if typ vdd x 80% vcc typ vdd x 90%, then t d should be less than 20ms. t d v cc v dd gnd 90% 80% 4.5v v dd 5.5v if v dd (typ.) x 80% v cc v dd (typ) x 90%, then 0

27/31 page LTM185AT01 model product information product information 7. outline dimension [ refer to the next page ] www.datasheet.co.kr datasheet pdf - http://www..net/
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29/31 page LTM185AT01 model product information product information (a) when the module is assembled, it should be atta ched to the system firmly using all mounting holes. be careful not to twist a nd bend the module. (b) because the inverter uses high voltages, it sho uld be disconnected from power source before it is assembled or disassembled. (c) refrain from strong mechanical shock and / or a ny force to the module. in addition to damage, it may cause improper operat ion or damage to the module and ccft back light. (d) note that polarizer films are very fragile and could be damaged easily. do not press or scratch the surface harder than a h b 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 al cohol) or hexane. do not use ketone type materials (ex. acetone), ethy l alcohol, toluene, ethyl acid or methyl chloride. it might cause permanent damage to the polarizer due to chemical reaction. (h) if the liquid crystal material leaks from the p anel, it should be kept away from the eyes or mouth . in case of contact with ha nds, legs or clothes, it must be washed away with soap thoroughly. (i) protect the module from static, or the cmos gat e array ic 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 pull or fold the lamp wire. (m) do not adjust the variable resistor located on the module. (n) protection film for polarizer on the module sho uld be slowly peeled off just before use so that the electrostatic charge can be minimized. (o) pins of i/f connector should not be touched dir ectly with bare hands. 8. general precautions 8.1 handling www.datasheet.co.kr datasheet pdf - http://www..net/
30/31 page LTM185AT01 model product information product information 8.2 storage (a) do not leave the module in high temperature, an d high humidity for a long time. it is highly recommended to store the module with t emperature from 0 to 35 and relative humidity of less than 70%. (b) do not store the tft-lcd module in direct sunli ght. (c) the module should be stored in a dark place. it is prohibited to apply sunlight or fluorescent light in storing. 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" (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 interferen ce. (d) the cable between the back light connector and its inverter power supply should be connected directly with a minimized length. a lo nger cable between the back light and the inverter may cause lower lum inance of lamp(ccft) and may require higher startup voltage(vs). 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 (no t stationary) (b) if the product will be used in extreme conditio ns 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, an d controlling systems. www.datasheet.co.kr datasheet pdf - http://www..net/
31/31 page LTM185AT01 model product information product information 8.5 others (a) ultra-violet ray filter is necessary for outdoo r operation. (b) avoid condensation of water. it may result in i mproper 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 in advance when you display the same pattern for a long time. www.datasheet.co.kr datasheet pdf - http://www..net/

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