NEC - Document Number: DOD-PP-0199 (4th edition) Published date: March 2007 CP(N) Manual
Contents
1. SR har Luminance uniformit White LU 1 25 1 4 BM 5A Note4 Y OR 0 OL 0 U 0 0D 0 Chromaticity x coordinate Gx 0333 y coordinate uy 2110527 ems O x coordinate Bx A y coordinate p my osa White x coordinate wx 0263 313 0343 y coordinate Wy 0299 0 329 0 359 Ball x coordinate Rx A E A y coordinate Ry asa A SR 3 Note5 OR 0 OL 09 0U 0 OD 0 ret WhitetoBlack Ton e i ms mua BlacktoWhie Tot 19 ms Note anon asa ajaja gt o o gt Viewing mes BT SUS 0V ERE EZ Note8 OR 0 OL 0 CR gt 10 7 Contrast OR 0 0L 0 CR 10 50 Notel Note2 These are initial characteristics Measurement conditions are as follows Ta 25 C VCC 3 3V IBL 5 0mArms lamp Display mode VGA Horizontal cycle 1 31 468kHz Vertical cycle 1 59 94Hz DPS Low or Open Normal scan Optical characteristics are measured at luminance saturation after 20minutes from working the product in the dark room Also measurement methods are as follows Photodetector BM 5A or SR 3 Photodetector EZ Contrast LCD module LCD module Product Product Note3 See 4 10 2 Definition of contrast ratio Note4 See 4 10 3 Definition of luminance uniformity Note5 These coordinates are found on CIE 1931 chromaticity diagram Note6 Product surface temperature TopF 27 C Note7 Note82. Do not disassemble a product or adjust variable resistors See REPLACEMENT MANUAL FOR LAMP HOLDER SET when replacing backlight lamps O Pay attention not to insert foreign materials inside of the product when using tapping screws Pack the product with original shipping package in order to avoid any damages during transportation when returning the product to NEC for repair and so on DATA SHEET DOD PP 0199 4th edition 27 NEC NEC LCD Technologies Ltd 7 OUTLINE DRAWINGS 7 1 FRONT VIEW 10 5 0 5 4 10 4 0 5 gt lt OM Jr L 9705 HL 9 05 d 82 05 kak 30 3 2 5 0 3 152 0 0 5 10 S N M I f u S H st 10 0 5 el 21 H 11 56 x LN o H t e S H amp H N T P 30 5 4 02 8 10 5 0 5 Display area center Product Center 170 88 Display area 174 0 5 Bezel Opening Area 128 16 Display area y 131 4 0 5 Bezel Opening Area 8 08 9 7 0 5 194 0 3 200 0 0 5 The values in parentheses are for reference The torque for product mounting screws must never exceed 0 294N m EZA Mounting hole portions 4 pieces DATA SHEET DOD PP 0199 4th edition 2540 3 14 1 3 0 3 NL6448BC26 09 Unit mm 28 NEC NEC LCD Technologies Ltd NL6448B
3. 6 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 DETAILED SPECIFICATIONS 4 1 MECHANICAL SPECIFICATIONS Parameter Specification Module size 200 0 0 5 W x 152 0 0 5 H x 10 5 0 5 D Note1 Display area 170 88 H x 128 16 V Note1 See 7 OUTLINE DRAWINGS 4 2 ABSOLUTE MAXIMUM RATINGS Parameter Rating i Remarks Power supply LCD panel signal processing board 0 3 to 6 5 lt MEME Lamp voltage VBLH 1 700 Display signals Input voltage Notel 0 3 to VCC 0 3 for signals Function signal VF Note2 Storage temperature Tm 30t0 80 30 to 4 Operating temperature m wer mem x omm JR ELE Absolute humidity lt 70 ec ruta Julen Note1 CLK Hsync Vsync DE DATA RO to R5 GO to G5 BO to B5 Note2 DPS Note3 Measured at center of LCD panel surface including self heat Note4 Measured at center of LCD module s rear shield surface including self heat Note5 No condensation Note6 Water amount at Ta 70 C and RH 36 DATA SHEET DOD PP 0199 4th edition 7 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 3 ELECTRICAL CHARACTERISTICS 4 3 1 LCD panel signal processing board Ta 25 C Parameter in Remarks at VCC 3 3V Power supply voltage Power supply current a High VDH 0 7VCC VCC V Logic input voltage for display signals Low VDL 0 3VCC V CMOS level High VFH 0 7VCC VCC signal Low VFL 0 3VCC V Note1 Checkered flag pattern by
4. Y and D X Y C X Y The coordinates of the display position See 4 7 DISPLAY POSITIONS D X Y The data number of input signal for LCD panel signal processing board DATA SHEET DOD PP 0199 Ath edition 15 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 9 INPUT SIGNAL TIMINGS 4 9 1 Outline of input signal timings e Horizontal signal Notel f Horizontal synchronizing cycle th f _ Horizontal synchronizing pulse width thp I 1 1 Hsync Note2 Horizontal back porch thb Horizontal front porch thf f Display period i Horizontal display period thd i 1 DE Data GN e Vertical signal Note1 D Vertical synchronizing cycle tv 1 LU i Vertical synchronizing pulse width tvp 1 pog Vsync Note2 Vertical back porch tvb Vertical front porch tvf 1 i h a oe a 1 1 Display period Vertical display period tvd DE Data enable I E 5 1 2 3 4 480 Note3 Note1 This diagram indicates virtual signal for set up to timing Note2 Fixed mode cannot be used while working of DE mode Note3 See 4 9 3 Input signal timing chart for numeration of pulse DATA SHEET DOD PP 0199 Ath edition 16 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 9 2 Timing characteristics a Fixed mode Note1 Parameter in A i Remarks Frequency 9 0 39 72ns typ ow ops pee qee Rise Risetime Fall time Risetime Fall time tim
5. 1hour Heat cycle 70 3 C 1hour Operation O 50cycles 4 hours cycle Display data is black O 30 3 C 30minutes No display malfunctions 80 3 C 30minutes Note1 Thermal shock Non operation O 100cycles 1hour cycle Temperature transition time is within 5 minutes O 150pF 1500 10kV 9 places on a panel surface Note2 10 times each places at 1 sec interval O Sample dust No 15 by JIS Z8901 O 15 seconds stir 8 times repeat at 1 hour interval O 5 to 100Hz 19 6m s Vibration O 1 minute cycle Non operation X Y Z direction No display malfunctions O 120 times each directions No physical damages O 539m s 11ms Notel O X XY Z direction O 5 times each directions Notel Display and appearance are checked under environmental conditions equivalent to the inspection conditions of defect criteria Note2 See the following figure for discharge points ESD Operation Dust Operation Mechanical shock Non operation DATA SHEET DOD PP 0199 4th edition 24 NEC NEC LCD Technologies Ltd NL6448BC26 09 6 PRECAUTIONS 6 1 MEANING OF CAUTION SIGNS The following caution signs have very important meaning Be sure to read 6 2 CAUTIONS and 6 3 ATTENTIONS after understanding these contents A This sign has the meaning that customer will be injured by himself or the product will sustain a damage if customer has wrong operations This sign has the meaning that customer w
6. See 4 10 4 Definition of response times See 4 10 5 Definition of viewing angles DATA SHEET DOD PP 0199 Ath edition 22 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 10 2 Definition of contrast ratio The contrast ratio is calculated by using the following formula Luminance of white screen Contrast ratio CR Luminance of black screen 4 10 3 Definition of luminance uniformity The luminance uniformity is calculated by using following formula Maximum luminance from O to Luminance uniformity LU umi uni ity LU Minimum luminance from O to The luminance is measured at near the 5 points shown below 4 10 4 Definition of response times Response time is measured the luminance changes from white to black or black to white on the same screen point by photo detector Ton is the time it takes the luminance change from 90 down to 10 Also Toff is the time it takes the luminance change from 10 up to 9096 See the following diagram 10096 White 90 Luminance Black 10 0 4 10 5 Definition of viewing angles Normal axis Perpendicular 12 o clock DATA SHEET DOD PP 0199 4th edition 23 NEC NEC LCD Technologies Ltd NL6448BC26 09 5 RELIABILITY TESTS Test item Condition Judgment High temperature and humidity O 60 2 C RH 90 240hours Operation O Display data is black High temperature O 70 3 C 240hours Operation O Display data is black O 20 3 C
7. 0V a protection circuit may work and then this product may not work Note2 Display signals CLK Hsync Vsync DE DATA RO to R5 GO to G5 BO to B5 and function signal DPS must be Low or High impedance exclude the VALID period See above sequence diagram in order to avoid that internal circuits is damaged If some of display and function signals of this product are cut while this product is working even if the signal input to it once again it might not work normally VCC should be cut when the display and function signals are stopped 4 4 2 Inverter Option Note2 Display signals Function signals Note1 VALID period VDDB Note1 These are the display and function signals for LCD panel signal processing board Note2 The backlight should be turned on within the valid period of display and function signals in order to avoid unstable data display DATA SHEET DOD PP 0199 Ath edition 11 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 5 CONNECTIONS AND FUNCTIONS FOR INTERFACE PINS 4 5 1 LCD panel signal processing board CN1 socket LCD module side DF9C 31P 1V 2 Hirose Electric Co Ltd HRS Adaptable plug DF9 31S 1V 2 DF9 31S 1V 3 Hirose Electric Co Ltd HRS Pin No Symbol Signal Remarks Ground Dot clock Horizontal synchronous signal Vertical synchronous signal Ground Red data LSB Least significant bit Red data Red data Red data Red data Red data MSB Most significant b
8. 8BC26 09 NEC NEC LCD Technologies Ltd 4 6 DISPLAY COLORS AND INPUT DATA SIGNALS This product can display in eguivalent to 262 144 colors in 64 gray scales Also the relation between display colors and input data signals is as the following table G4 G3 G2 G1 GO B5 B4 B3 B2 B1 BO A pan o gt Uv 2 A ob a x a EM w gt Uv A z el S Xx I ob B n e A R5 R4 R3 R2 R1 RO G5 Display colors S10 09 DISEG 9 e2s ARIS pay yeas LIS UDI eos RS ang 14 DATA SHEET DOD PP 0199 4th edition NEC NEC LCD Technologies Ltd NL6448BC26 09 4 7 DISPLAY POSITIONS The following table is the coordinates per pixel See 4 8 SCANNING DIRECTIONS C 0 0 R G B a A OE 660 4 0 Er 1 KES X Tees 1 Tareas 1 Feuer faro se n aa v CQ 0 478 cc 1 478 cc X48 C 638 478 C 639 478 c 049 cc 149 cc X49 C 638 479 C 639 479 4 8 SCANNING DIRECTIONS The following figures are seen from a front view Also the arrow shows the direction of scan C 639 0 D 639 0 Notel C 0 479 C 639 479 D 0 479 D 639 479 C 0 0 C 639 0 D 639 479 4 D 0 479 SAN Notel C 0 479 C 639 479 D 639 0 D 0 0 Figure2 Reverse scan DPS High Note1 Meaning of C X
9. C26 09 7 2 REAR VIEW Elo 2622 4 0 5 430 51 le 5 0 5 G Pi 57A id o 0 o Lo MG o LO e Y EN I X X X X OK X X X CK OR X X X MM MR MM XX OR OX X XX X E HIN X HON N XK N Mk X X X XX X X XX XXX X K p M X XM X X X X X X X X X MM JE ME SER pr1 safojunoet 097 23N IAN 2200273 in ini nd 1YSO4SI O SLI 404 SNOI Iv1nO3H YO sa T eode oe oo TEN VA S3ONVNI AHO 1W901 01104 3S5VITd Sooo I TY IIS AYNDYIN JO LNNONY 60 9Z998 9 IN 1900W TTwIMS v SNI YLNOO 37NAON do1 in NI dAW LN395340N14 300HLVO d109 e BOIAYVAS YODO uto SIM15SYTA 21 15AaNNOSSIO MSOHS SIMISATA JO YSIN io NOI LIV JOYLIOA H9IH re o ive Note1 The values in parentheses are for reference Unit mm Note2 The torque for product mounting screws must never exceed 0 294N m Note3 EZA Mounting hole portions 4 pieces DATA SHEET DOD PP 0199 4th edition 29
10. EE egeta eoe NER ave sipe ee ebd 24 6 PRECAUTIONS esiti ON 25 6 1 MEANING OF CAUTION SIGNS Sernin nettes enne naa a na enne testante tetti sensere nnt eee 25 62 CAUTIONS eet hien etii ITSENI E AL RE iei 25 G S ATTENTIONS AA eee ORI ERE HO I EHI HIE LTA FIEL eee ede 25 6 3 1 Handling of the product srernvronvrnnvrnnvennvvnnvrnnvennvennvennvrnnvennnrsnvrnnvennvennvsnnsennvesnvennvsnnvsnnvennvennnsnnee 25 6 3 2 EDVIFODTeTE atom ne seite eem Ea ra EN QU dene 26 6 3 3 C aracteristis marsjerende 26 O OL 27 To QUILINEDRAWNJNGS e eitecseceeia veia eese euh eee epe vec ea sssini ressaire ESS S ES ESENE EE aa 28 FA FRONT VIEW ihtieetateaeentaeedetadesiquee re iei pete PE eH a 28 7B A S d SAID TAITEN UUTE TR RISA re sr S TNT ST T L A 29 DATA SHEET DOD PP 0199 4th edition 3 NEC NEC LCD Technologies Ltd NL6448BC26 09 1 OUTLINE 1 1 STRUCTURE AND PRINCIPLE Color LCD module NL6448BC26 09 is composed of the amorphous silicon thin film transistor liguid crystal display a Si TFT LCD panel structure with driver LSIs for driving the TFT Thin Film Transistor array and a backlight The a Si TFT LCD panel structure is injected liguid crystal material into a narrow gap between the TFT array glass substrate and a color filter glass substrate Color Red Green Blue data signals from a host system e g signal generator etc are modulated into best form for active matrix system by a signal processing circuit and sent to the driv
11. EIAJ ED 2522 Note2 Pattern for maximum current DATA SHEET DOD PP 0199 Ath edition 8 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 3 2 Backlight lamp Ta 25 C Note1 Parameter in A 3 Remarks Lamp starting voltage at IBL 5 0mArms Lamp current L 450cd m Note3 Note4 Ta 25 C ote2 Note3 Note5 Note8 Ta 20 C ote2 Note3 Note5 Note8 Lamp oscillation frequency FO 45 Notel Note2 Note3 Note4 Note5 Note6 Note7 This product consists of 2 backlight lamps and these specifications are for each lamp The lamp voltage cycle between lamps should be kept on a same phase VS and VBLH are the voltage value between low voltage side Cold and high voltage side Hot The asymmetric ratio of working waveform for lamps Power supply voltage peak ratio power supply current peak ratio and waveform space ratio should be less than 5 See the following figure If the waveform is asymmetric DC Direct current element apply into the lamp In this case a lamp lifetime may be shortened because a distribution of a lamp enclosure substance inclines toward one side between low voltage terminal Cold terminal and high voltage terminal Hot terminal When designing the inverter evaluate asymmetric of lamp working waveform sufficiently Pa Pb p x100 lt 5 Sa Sb 100 S5 Pa Supply voltage current peak for positive Pb Supply vo
12. FACE PINS oss ea eene 12 4 5 1 LCD panel signal processing board oss a aa naa nnne 12 45 2 Backlight lahna emm ee eet eee aene e e eren SR oe ete e SATAN ea eee e ege teas 13 4 5 3 Positions of plug and socket uuoosssss aa a aa aa aa nennen aa aa aa nennen enne nes 13 4 6 DISPLAY COLORS AND INPUT DATA SIGNALS esses a a a aa aa nennen nne 14 47 DISPLAY POSITIONS 5 A A ANTS TAINTA I ea ae AG 15 4 8 SCANNING DIREGTIONS 3 2 6 e s se SS Hee VS e deg mese nit 15 4 9 INPUT SIGNAL TIMINGS 3 nore rene pine ee ep vala aan aaa aiana iS 16 4 9 1 Outline of input signal timings oooonoccnocononononanonanonanonanonanonanonononononono KA nono nono nano nano nano nano cines 16 492 a E NN 17 4 9 3 Input signal timing Ci aiii 19 410 OPTIGS tenere ee e ee Maa n anata 22 4 10 1 Optical characteristics vse 2 ee e A AN IT an titer dene id 22 4 10 2 Definition of contrast ratio nennen aa aa nennen aa aa naa aa inesse senes 23 4 10 3 Definition of luminance uniformity semeurs tien eene enne aa eaa nnne nennen 23 4 10 4 Definition of response times ccsccescesscessceecesecesecescceseceseceseceseceseceseceseceseceseensecaeeeseeenseens 23 4 10 5 Definition of viewing angles esses eene nennen aa nennen naa aa eren senes nennen 23 5 RELTABILTEY TESTS ss sssssiscsccsccsusseassteadtvsccesdeassaesivonsceadssssuesscased EL PE TR LAKIA Tea AN eS
13. L 5 0mArms lamp 450cd m typ 6 bit digital signals for data of RGB colors Ke Susi Dot clock CLK Data enable DE g X Horizontal synchronous signal Hsync Vertical synchronous signal Vsync Power supply voltage LCD panel signal processing board 3 3V or 5 0V Edge light type 2 cold cathode fluorescent lamps Ea part e Lamp holder set Type No 84LHS06 Backlight Recommended inverter Option e Inverter Type No 84PW031 84PW041 Pier codcumnaton At IBL 5 0mArms lamp Checkered flag pattern TUP 5 3 W typ Power dissipation of the inverter is not included DATA SHEET DOD PP 0199 4th edition 5 NEC NEC LCD Technologies Ltd NL6448BC26 09 3 BLOCK DIAGRAM Host LCD module Product RO to R5 GO to G5 B0 to B5 EP H driver 1 920 lines LCD panel H 640 x 3 R G B V 480 Power supply for gradation CLK Hsync Vsync DE V driver 480 lines DPS passaa Backlight Edge light type NA RN I rae EN 77 VDDB e Inverter l Option GNDB e Note2 I I Notel Note1 Relations between GND Signal ground FG Frame ground and VBLC Lamp low voltage terminal in the LCD module are as follows FG VBLC Note2 GND FG and GNDB must be connected to customer equipment s ground and it is recommended that these grounds are connected together in customer equipment DATA SHEET DOD PP 0199 4th edition
14. NEC NEC LCD Technologies Ltd TFT COLOR LCD MODULE NL6448BC26 09 21 cm 8 4 Type VGA DATA SHEET 2 DOD PP 0199 4th edition This DATA SHEET is updated document from DOD PP 0141 3 All information is subject to change without notice Please confirm the sales representative before starting to design your system Document Number DOD PP 0199 4th edition 1 NECLCD Technologies Ltd Published date March 2007 CP N 2006 2007 All rights reserved NEC NEC LCD Technologies Ltd NL6448BC26 09 INTRODUCTION The Copyright to this document belongs to NEC LCD Technologies Ltd hereinafter called NEC No part of this document will be used reproduced or copied without prior written consent of NEC NEC does and will not assume any liability for infringement of patents copyrights or other intellectual property rights of any third party arising out of or in connection with application of the products described herein except for that directly attributable to mechanisms and workmanship thereof No license express or implied is granted under any patent copyright or other intellectual property right of NEC Some electronic parts components would fail or malfunction at a certain rate In spite of every effort to enhance reliability of products by NEC the possibility of failures and malfunction might not be avoided entirely To prevent the risks of damage to death human bodily injury or other property arising out thereof or in c
15. PECIFICATIONS visiscossssssveissoncsesentseseonsosessvessonvoonsesesensstesdeensontesevesessoosedatoossesesacenesensetastess 5 3 BLOCK DIAGRAM ji sackissssessisossesedossoassdessveostosstatsbesoncbsscedoascnsshesoneosdesttasebasosessisestessecsueoodsnssseessaboncedesstye 6 4 DETAILED SPECIFICATIONS eesessvesvsssessessvensennessvensensesnessesnsennessensennesseensensennesseensennesnesssensennesseensensee 7 4 1 MECHANICAL SPECIFICATIONS srrersensenvsenssnsenssnvnensenesnsennsenssnsenssnnssnsenesnsennenssnsennsenssnsenssenssnsenssnsee 7 4 2 ABSOLUTE MAXIMUM RATINGS esseenesneenrvenesneensensenesnesnssnneenesnesnsennesnesnesnsevnesnesnesnssnnesssnsennesnesnees 7 4 3 ELECTRICAL CHARACTERISTICS emeersorsenvrensensensenvesnssnsenssnnsensensenssnnssnesnsenssnnsenssnssnsnnnssssnssnnssnssnses 8 4 3 1 LCD panel signal processing board esses eene eene enne enne nnne nnne nine 8 4 32 Backlight lampe i eerte ente retta eot ES ERES ERE rt Eee ele am eee esee ill 9 4 3 3 Power supply voltage ripple oonnoonoconiconoconononononononononononononono enne Haa nono enne nono nnne nnne nnne nennen tenni 10 43 4 BUS s ooo oeste erre Sn 10 4 4 POWER SUPPLY VOLTAGE SEQUENCE cccccescssssssssscssceseeseesececceceesecseceeeeaeeaesseseeseaeeaeeeeeneeaes 11 4 4 1 LCD panel signal processing board suussssss os aa eaa enaa a aa eaa enaa enne nennen 11 CAD ii neenon etat etaed baeo diei ti 11 4 5 CONNECTIONS AND FUNCTIONS FOR INTER
16. ace tension of thin layer and the construction of LCD panel But if you contact with liguid crystal for the worst please wash it out with soap 6 3 2 Environment O O Do not operate or store in high temperature high humidity dewdrop atmosphere or corrosive gases Keep the product in packing box with antistatic pouch in room temperature to avoid dusts and sunlight when storing the product In order to prevent dew condensation occurring by temperature difference the product packing box should be opened after enough time being left under the environment of an unpacking room Evaluate the leaving time sufficiently because a situation of dew condensation occurring is changed by the environmental temperature and humidity Recommended leaving time 6 hours or more with packing state Do not operate in high magnetic field Circuit boards may be broken down by it This product is not designed as radiation hardened 6 3 3 Characteristics The following items are neither defects nor failures OG 060 Characteristics of the LCD such as response time luminance color uniformity and so on may be changed depending on ambient temperature If the product is stored under condition of low temperature for a long time it may cause display mura In this case the product should be operated after enough time being left under condition of operating temperature Display mura flicker vertical seam or small spot may be observ
17. e tcrf dos dps y DATA Lee SE IEC G0 G5 B0 B5 Rise Risetime Falltime Risetime Falltime time tart af Pe jar Hsync Total of pulse width and back porch of Total of pulse width and back porch width and back porch thp thb va saame s 3 gt gt CLK Hsync ELITES En Rise Risetime Falltime Risetime Falltime time EM ees N D Vsync i 130 Hsync Vsync muine wm s Note1 Definition of parameters is as follows tc 1CLK tcd tch tc th 1H Note2 Keep tvp tvb and thp thb within the table If it is out of specification display position will be shifted to right left side or up down DATA SHEET DOD PP 0199 4th edition 17 NEC NEC LCD Technologies Ltd NL6448BC26 09 b DE mode Note1 Note2 Note3 Parameter in E i Remarks Freguency 1 0 9 0 39 72ns typ CR E mme De ole mm gt le an ma sn Pe ppp G0 G5 B0 B5 Rise Risetime Falltime Risetime Falltime time tdrf Horizontal Display period period IRE sea E gt pa Vertical One frame Display period rer CLK DE sum ES Rise time Fall time Note1 Definition of parameters is as follows tc 1CLK tcd tch tc th 1H Note2 Hsync signal CN1 Pin No 3 and Vsync signal CN1 Pin No 4 are not used inside the product at DE mode but do not keep these pins open to avoid noise problem Note3 Vertical cycle tv should be specifi
18. ed depending on display patterns Optical characteristics e g luminance display uniformity etc gradually is going to change depending on operating time and especially low temperature because the LCD has cold cathode fluorescent lamps Do not display the fixed pattern for a long time because it may cause image sticking Use a screen saver if the fixed pattern is displayed on the screen The display color may be changed depending on viewing angle because of the use of condenser sheet in the backlight Optical characteristics may be changed depending on input signal timings The interference noise between input signal frequency for this product s signal processing board and luminance control frequency of the inverter may appear on a display Set up luminance control frequency of the inverter so that the interference noise does not appear After the product is stored under condition of low temperature or dark place for a long time the cold cathode fluorescent lamp may not be turned on under the same condition because of the general characteristic of cold cathode fluorescent lamp In addition when Luminance control ratio is low in pulse width modulation method inverter the lamp may not be turned on In this case power should be supplied again DATA SHEET DOD PP 0199 4th edition NL6448BC26 09 26 NEC NEC LCD Technologies Ltd NL6448BC26 09 6 3 4 Other O All GND and VCC terminals should be used without any non connected lines
19. ed in integral multiple of Horizontal cycle th DATA SHEET DOD PP 0199 4th edition 18 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 9 3 Input signal timing chart a Fixed mode DATA RO R5 GO G5 B0 B5 D X 478 D X 479 INVALID Note X 0 to 639 INVALID Hsync es TIMID XX XX XOXO B0 B5 INVALID D 0 Y D 1 Y D X Y D 638 Y D 639 Y INVALID 144CLK fixed DATA RO R5 Jam EQ G0 G5 B0 B5 EO INVALID D 639 Y INVALID Note Y 0 to 479 DATA SHEET DOD PP 0199 4th edition 19 NEC NEC LCD Technologies Ltd NL6448BC26 09 b DE mode Horizontal timing tc me spp TMV DATA W 20 25 seg mva X X W G0 G5 B0 B5 p Lief Vertical timing DATA H N mh OC coms JOD CODO QC mm G0 G5 112 N 479 480 B0 B5 DE DATA SHEET DOD PP 0199 4th edition 20 NEC NEC LCD Technologies Ltd NL6448BC26 09 c Common item of Fixed mode and DE mode CLK DATA RO R5 GO G5 B0 B5 DE CLK Hsync Hsync Vsync tc INVALID INVALID 0 7VCC DATA SHEET DOD PP 0199 4th edition 21 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 10 OPTICS 4 10 1 Optical characteristics Note1 Note2 Parameter Condition instrument White at center Luminance L 2 BM 5A OR 0 OL 0 OU 0 0D 0 a White Black at center A OR 0 OL 0 OU 0 0D 0 cr am s
20. er LSIs which drive the individual TFT arrays The TFT array as an electro optical switch regulates the amount of transmitted light from the backlight assembly when it is controlled by data signals Color images are created by regulating the amount of transmitted light through the TFT array of red green and blue dots 1 2 APPLICATION e For industrial use 1 3 FEATURES e High luminance e High contrast e Wide viewing angle e Wide temperature range e 6 bit digital RGB signals e Reversible scan direction e Edge light type without inverter e Replaceable lamp for backlight e Acguisition product for UL60950 1 CSA C22 2 No 60950 1 03 File number E170632 e Compliance with the European RoHS directive 2002 95 EC DATA SHEET DOD PP 0199 4th edition 4 NEC NEC LCD Technologies Ltd NL6448BC26 09 2 GENERAL SPECIFICATIONS At the contrast ratio 210 1 Viewing angle e Horizontal Right side 80 typ Left side 80 typ e Vertical Up side 80 typ Down side 60 typ At DPS Low or open Normal scan e Viewing direction without image reversal up side 12 o clock Designed viewing direction Viewing direction with contrast peak down side 6 o clock e Viewing angle with optimum grayscale y 2 2 normal axis perpendicular Polarizer pencil hardness 3H min by JIS K5400 Color sara At LCD panel center g 40 typ against NTSC color space o O Response time Ton Toff 10 gt 90 25ms typ ado At IB
21. failure or malfunction of the products sets or parts components incorporated therein a customer uses might directly cause any damage to death human bodily injury or other property or such application under more severe condition than that defined in the Standard guality grade without such direct damage Examples Control systems for transportation eguipment automobiles trains ships etc traffic control systems anti disaster systems anti crime systems medical eguipment not specifically designed for life support safety eguipment etc The Specific guality grade applies to the products developed designed and manufactured in accordance with the standards or guality assurance program designated by a customer who reguires an extremely higher level of reliability and guality for such products Examples Military systems aircraft control eguipment aerospace eguipment nuclear reactor control systems medical eguipment devices systems for life support etc The guality grade of this product is the Standard unless otherwise specified in this document DATA SHEET DOD PP 0199 4th edition 2 NEC NEC LCD Technologies Ltd NL6448BC26 09 CONTENTS INTRODUCTION ee ka ashnelaapuueaekanvaa HKveKA STAaukuoaaslduvukauskauekast avumasksvkast assse 2 L OBEN Bi comete 4 1 1 SERUCTURE AND PRINCIPEE pusen date der s R rt Ae HEN saree od 4 12 APPLIGATION Vit EE nn mtn vas en 4 T 3 FEATURES ni DERE UIDI ipli lun and eaten 4 2 GENERAL S
22. ill get an electrical shock if customer has wrong operations This sign has the meaning that customer will be injured by himself if customer has wrong operations 6 2 CAUTIONS AN Do not touch the working backlight There is a danger of an electric shock X Do not touch the working backlight There is a danger of burn injury Do not shock and press the LCD panel and the backlight There is a danger of breaking because they are made of glass Shock To be not greater 539m s and to be not greater 11ms Pressure To be not greater 19 6N 916mm jig 6 3 ATTENTIONS A 6 3 1 Handling of the product O Take hold of both ends without touching the circuit board when the product LCD module is picked up from inner packing box to avoid broken down or misadjustment because of stress to mounting parts on the circuit board Do not hook nor pull cables such as lamp cable and so on in order to avoid any damage amp When the product is put on the table temporarily display surface must be placed downward When handling the product take the measures of electrostatic discharge with such as earth band ionic shower and so on because the product may be damaged by electrostatic The torque for product mounting screws must never exceed 0 294N m Higher torque might result in distortion of the bezel The product must be installed using mounting holes without undue stress such as bends or twist See outline drawing
23. it Ground Green data LSB Least significant bit Green data Green data Green data Green data Green data MSB Most significant bit Blue data LSB Least significant bit Blue data Blue data Blue data Blue data Blue data MSB Most significant bit Ground RL O N Q Z U E High or Open Fixed mode Selection of DE Fixed mode Data enable signal DE mode Power supply Noii ote Power supply Keep this pin Open High Reverse scan Low or Open Normal scan Note2 Note1 All GND and VCC terminals should be used without any non connected lines Note2 See 4 8 SCANNING DIRECTIONS Selection of scan direction DATA SHEET DOD PP 0199 4th edition 12 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 5 2 Backlight lamp Attention VBLH and VBLC must be connected correctly Wrong connections will cause electric shock and also break down of the product CN2 plug LCD module side BHR 04VS 1 J S T Mfg Co Ltd Adaptable socket SM03 7 D1 B BHS 1 TB LF SN SM03 7 D1 B BHS 1 TB J S T Mfg Co Ltd Pin No Symbol Signal Remarks VBLH High voltage Hot Cable color Pink 1 VBLH High voltage Hot Cable color Pink VBLC Low voltage Cold Cable color Black 4 5 3 Positions of plug and socket High voltage Hot Rear side 4 High voltage caution marking Low voltage Cold Disposal method Name plate label Barcode label DATA SHEET DOD PP 0199 4th edition 13 NL644
24. ltage current peak for negative Sa Waveform space for positive part Sb Waveform space for negative part This product consists of 2 lamps 2 lamps are contained in the 1 lamp holder and both lamps are connected to 1 low voltage cable Recommended lamp current is 5 0mArms typical for each lamp and sum of 2 lamps is 10mArms typical The lamp current should be measured by high frequency current meter at the low voltage terminal The inverter should be designed so that the lamp starting voltage can be maintained for more than 1 second Otherwise the lamp may not be turned on In case FO is not the recommended value beat noise may display on the screen because of interference between FO and 1 th Recommended value of FO is as following 1 1 ae 2n 1 FO T XE x 2n 1 th Horizontal cycle See 4 9 2 Timing characteristics n Natural number 1 2 3 Method of lamp cable installation may invite fluctuation of lamp current and voltage or asymmetric of lamp working waveform When designing method of lamp cable installation evaluate the fluctuation of lamp current voltage and working waveform sufficiently DATA SHEET DOD PP 0199 Ath edition NEC NEC LCD Technologies Ltd NL6448BC26 09 Note8 In case of Inverter with Ballast condenser VS is the voltage level between Ballast condenser yx and Connector Refer to the below Example of measurement VS should be designed to be more than minimum VS Otherwise
25. onnection therewith each customer is reguired to take sufficient measures in its safety designs and plans including but not limited to redundant system fire containment and anti failure The products are classified into three guality grades Standard Special and Specific of the highest grade of a guality assurance program at the choice of a customer Each guality grade is designed for applications described below Any customer who intends to use a product for application other than that of Standard guality grade is reguired to contact an NEC sales representative in advance The Standard guality grade applies to the products developed designed and manufactured in accordance with the NEC standard guality assurance program which are designed for such application as any failure or malfunction of the products sets or parts components incorporated therein a customer uses are directly or indirectly free of any damage to death human bodily injury or other property like general electronic devices Examples Computers office automation eguipment communications eguipment test and measurement eguipment audio and visual eguipment home electronic appliances machine tools personal electronic eguipment industrial robots etc The Special guality grade applies to the products developed designed and manufactured in accordance with an NEC guality assurance program stricter than the standard one which are designed for such application as any
26. s And do not add undue stress to any portion such as bezel flat area Bends or twist described above and undue stress to any portion may cause display mura O Do not press or rub on the sensitive product surface When cleaning the product surface use of the cloth with ethanolic liquid such as screen cleaner for LCD is recommended Do not push nor pull the interface connectors while the product is working DATA SHEET DOD PP 0199 4th edition 25 NEC NEC LCD Technologies Ltd O O O O Do not bend or unbend the lamp cable at the near part of the lamp holding rubber to avoid the damage for high voltage side of the lamp Properly connect the plug backlight side to adaptable socket inverter side without incomplete connection After connecting be careful not to hook the lamp cables because incomplete connection may occur by hooking the lamp cables This incomplete connection may cause abnormal operation of high voltage circuit If the lamp cable is attached on the metal part of the product directly high frequency leak current to the metal part may occur then the brightness may decrease or the lamp may not be turned on When handling the product use of an original protection sheet on the product surface polarizer is recommended for protection of product surface Adhesive type protection sheet may change color or characteristics of the polarizer Usually liguid crystals don t leak through the breakage of glasses because of the surf
27. the lamp may not be turned on because the lamp starting voltage is less than minimum VS Example of measurement Probe capacity 3pF Tektronix inc P6015A Ballast condenser Lamp side High voltage probe i Connectdr Transformer Inverter Probe capacity 4 3 3 Power supply voltage ripple This product works even if the ripple voltage levels are beyond the permissible values as following the table but there might be noise on the display image Ripple voltage Note1 Measure at input terminal of power supply Power supply voltage lt 100 Note1 The permissible ripple voltage includes spike noise 4 3 4 Fuse Parameter Fusing current Remarks Type Supplier KAMAYA ELECTRIC CO LTD FCC16202AB Note1 The power supply capacity should be more than the fusing current If it is less than the fusing current the fuse may not blow in a short time and then nasty smell smoke and so on may occur DATA SHEET DOD PP 0199 4th edition 10 NEC NEC LCD Technologies Ltd NL6448BC26 09 4 4 POWER SUPPLY VOLTAGE SEOUENCE 4 4 1 LCD panel signal processing board ON OFF ON VCC VNR ee N ge eee Note1 OV 10us lt Tr lt 30ms Toff gt 50ms Display signals Function signal Note2 OV VALID period Oms lt t lt 35ms Oms lt t lt 35ms Note1 In terms of voltage variation voltage drop while VCC rising edge is below 3 0V in VCC 3 3V or 4 75V in VCC 5
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NEC Document Number: DOD PP 0199 (4th edition) Published date: March 2007 CP(N) Manual