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document number: dod-m- 1309 (2nd edition) published date: january 2003 cp(n) nec corporation 2003 all rights reserved. all information is subject to change without notice. please confirm the delivery specification before starting to design your system. 1 tft color lcd module NL6448BC33-53 26cm (10.4 type) vga preliminary data sheet (2nd edition)
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 2 introduction no part of this document shall be copied in any form or by any means without the prior written consent of nec corporation. nec corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a product described herein or any other liability arising from use of such application. no license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of nec corporation or of others. while nec corporation has been making continuous effort to enhance the reliability of its products, the possibility of failures cannot be eliminated entirely. to minimize risks of damage to property or injury to person arising from a failure in an nec product, customers must incorporate sufficient safety measures in their design, such as redundancy, fire-containment and anti-failure features. nec products are classified into the following three quality grades: "standard" , "special" , "specific" the "specific" quality grade applies only to applications developed based on a customer designated "quality assurance program" for a specific application. the recommended applications of a product depend on its quality grade, as indicated below. customers must check the quality grade of each application before using it in a particular application. standard: computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots special: transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support) specific: military systems, aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems (medical equipment, etc.) and any other equipment the quality grade of this product is "standard" unless otherwise specified in this document. if customers intend to use this product for applications other than those specified for "standard" quality grade, they should contact nec corporation sales representative in advance. anti-radioactive design is not implemented in this product.
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 3 contents introduction ................................................................................................................... .......................2 1. outline..................................................................................................................... ...............................4 1.1 structure and principle.................................................................................................... .......4 1.2 applications............................................................................................................... ......................4 1.3 features................................................................................................................... ..........................4 2. general specifications ...................................................................................................... ..........5 3. block diagram ............................................................................................................... ....................6 4. detailed specifications ..................................................................................................... ..........7 4.1 mechanical specifications.................................................................................................. ....7 4.2 absolute maximum ratings ................................................................................................... .7 4.3 electrical characteristics................................................................................................. ..8 4.3.1 driving for lcd panel signal processing board ............................................................................ 8 4.3.2 working for backlight lamp ............................................................................................... ............9 4.3.3 power supply voltage ripple.............................................................................................. ...........10 4.3.4 fuse..................................................................................................................... .........................10 4.4 power supply voltage sequence ........................................................................................ 11 4.4.1 sequence for lcd panel signal processing board ....................................................................... 11 4.4.2 sequence for backlight inverter (option)................................................................................. .... 11 4.5 connections and functions for interface pins.........................................................12 4.5.1 lcd panel signal processing board ........................................................................................ .....12 4.5.2 backlight lamp........................................................................................................... ..................13 4.5.3 positions of plug and a socket........................................................................................... ...........13 4.6 display colors and input data signals ..........................................................................14 4.7 display positions.......................................................................................................... ...............15 4.8 scanning directions ........................................................................................................ .........15 4.9 input signal timings for lcd panel signal processing board ...........................16 4.9.1 outline of input signal timings .......................................................................................... ..........16 4.9.2 timing characteristics ................................................................................................... ...............17 4.9.3 input signal timing chart ................................................................................................ ..............19 4.10 optics.................................................................................................................... ...........................22 4.10.1 optical characteristics................................................................................................. ...............22 4.10.2 definition of contrast ratio............................................................................................ .............23 4.10.3 definition of luminance uniformity ...................................................................................... .....23 4.10.4 definition of response times ............................................................................................ ..........23 4.10.5 definition of viewing angles............................................................................................ ..........23 5. reliability tests........................................................................................................... ..................24 6. precautions ................................................................................................................. ......................25 6.1 meaning of caution signs ................................................................................................... ...25 6.2 cautions ................................................................................................................... .......................25 6.3 attentions ................................................................................................................. .....................25 6.3.1 handling of the product .................................................................................................. .............25 6.3.2 environment.............................................................................................................. ...................26 6.3.3 characteristics.......................................................................................................... ....................26 6.3.4 other .................................................................................................................... ........................26 7. outline drawings ............................................................................................................ ...............27 7.1 front view ................................................................................................................. .....................27 7.2 rear view .................................................................................................................. ......................28 revision history ............................................................................................................... ..................29
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 4 1. outline 1.1 structure and principle NL6448BC33-53 module is composed of the amorphous silicon thin film transistor liquid 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 liquid 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. pc, signal generator, etc.) are modulated into best form for active matrix system by a signal processing board, and sent to the driver 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 applications ? display terminal for control system ? industrial pc 1.3 features ? ultra-wide viewing angle ? high luminance ? high contrast ? 6-bit digital rgb signals ? reversible-scan direction ? edge light type ? replaceable lamp for backlight (inverter less)
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 5 2. general specifications display area 211.2 (w) 158.4 (h) mm (typ.) diagonal size of display 26 cm (10.4 inches) drive system a-si tft active matrix display color 262,144 colors pixel 640 (h) 480 (v) pixels pixel arrangement rgb (red dot, green dot, blue dot) vertical stripe dot pitch 0.11 (w) 0.33 (h) mm pixel pitch 0.33 (w) 0.33 (h) mm module size 243.0 (w) 185.1 (h) 10.5 (d) mm (typ.) weight 475 g (typ.) contrast ratio 300:1 (typ.) viewing angle at the contrast ratio 10:1 ? horizontal: right side 85 (typ.), left side 85 (typ.) ? vertical: up side 85 (typ.), down side 85 (typ.) designed viewing direction at dps= low or open: normal scan ? viewing angle with optimum grayscale ( =2.2): normal axis polarizer surface clear polarizer pencil-hardness 3h (min.) [by jis k5400] color gamut at lcd panel center 40 % (typ.) [against ntsc color space] response time ton (black 10% white 90%) 24 ms (typ.) luminance at 5.0marms / lamp 350 cd/m 2 (typ.) signal system 6-bit digital signals for data of rgb colors, dot clock (clk), data enable (de), horizontal synchronous signal (hsync), vertical synchronous signal (vsync) power supply voltage lcd panel signal processing board: 3.3v or 5.0v backlight edge light type: 2 cold cathode fluorescent lamps replaceable parts ? lamp holder set: type no. 104lhs39 recommended inverter (option) ? inverter: type no. 104pw191, 104pw161 power consumption at 5.0marms / lamp and checkered flag pattern 6.2 w (typ.) 2 2 2 2 2
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 6 3. block diagram note1: connections between gnd (signal ground), fg (frame ground) and vblc (lamp low voltage terminal) in the lcd module gnd - fg not connected gnd - vblc not connected fg - vblc not connected note2: these grounds should be connected together in customer equipment. host v-driver 1,920 lines lcd panel h: 640 3 (r,g,b) v: 480 480 lines vcc clk b0 to b5 g0 to g5 r0 to r5 dps de vsync hsync gnd 100 ? 100 ? 100 ? 100 ? 100 ? 100 ? 100 ? 47 k ? lcd module (product) lcd panel signal processing board power supply for gradation dc/dc converter fuse controller h-driver n ote1 n ote2 fg n ote1 n ote2 backlight inverter (option) vblh vblh gndb vblc n ote1 backlight (edge light type) n ote1 n ote2 lamp lamp metallic frame of lamp holder 8.2 k ? vddb
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 7 4. detailed specifications 4.1 mechanical specifications parameter specification unit module size 243.0 0.5 (w) 185.1 0.5 (h) 10.5 0.5 (d) note1 mm display area 211.2 (w) 158.4 (h) note1 mm weight 4 75 (typ.), 500 (max.) g note1: see " 7. outline drawings ". 4.2 absolute maximum ratings parameter symbol rating unit remarks lcd panel signal board vcc -0.3 to +6.5 v power supply voltage lamp voltage note1 vblh 1,500 vrms display signals note2 vd -0.3 to vcc+0.3 v input voltage for signals function signals note3 vf -0.3 to vcc+0.3 v ta = 25 c storage temperature tst -20 to +80 c - front surface topf -10 to +70 c note4 operating temperature rear surface topr tbd c note5 95 % ta 40 c relative humidity note6 rh 85 % 40 < ta 50 c absolute humidity note6 ah 70 note7 g/m 3 ta > 50 c note1: "vblh" is the voltage value between low voltage terminal (cold) and high voltage terminal (hot). note2: display signals are clk, hsync, vsync, de and data (r0 to r5, g0 to g5, b0 to b5). note3: function signal is dps. note4: measured at center of lcd panel surface (including self-heat) note5: measured at center of lcd module's rear shield surface (including self-heat) note6: no condensation note7: ta = 50c, rh = 85% 2
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 8 4.3 electrical characteristics 4.3.1 driving for lcd panel signal processing board (ta = 25 c) parameter symbol min. typ. max. unit remarks 3.0 3.3 3.6 v for 3.3v system power supply voltage vcc 4.75 5.0 5.25 v for 5v system - 280 note1 400 note2 ma vcc = 3.3v power supply current icc - 200 note1 280 note2 ma vcc = 5.0v low vdl 0 - 0.3vcc v logic input voltage for display signals high vdh 0.7vcc - vcc v low vfl 0 - 0.3vcc v input voltage for dps signal high vfh 0.7vcc - vcc v cmos level note1: checkered flag pattern [by eiaj ed-2522] note2: pattern for maximum current 2 2
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 9 4.3.2 working for backlight lamp (ta= 25 c note1) parameter symbol min. typ. max. unit remarks lamp current ibl 2.0 5.0 5.5 marms at ibl=5.0marms: 350cd/m 2 note3 lamp voltage vblh - 520 - vrms note2, note3 850 - - vrms ta = 25 c note2, note3 lamp starting voltage vs tbd - - vrms ta = -10 c note2, note3 oscillation frequency fo 50 - 70 khz note4 note1: this product's backlight consists of 2 lamps, and these specifications are for each lamp. note2: 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). note3: 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). pa: supply voltage/current peak for positive, pb: supply voltage/current peak for negative sa: waveform space for positive part, sb: waveform space for negative part note4: 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. th: horizontal cycle (see " 4.9 input signal timings for lcd panel signal processing board ".) n: natural number (1, 2, 3 ???????? ) note5: method of lamp cable installation may invite fluctuation of lamp current and voltage or asymmetric of lamp working waveform. when design the backlight inverter, evaluate the fluctuation of lamp current and voltage or asymmetric of lamp working waveform sufficiently. fo = 1 4 1 th (2n-1) pa pb sa sb 0 ? pa - pb ? pb 100 5 % ? sa - sb ? sb 100 5 % 2
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 10 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. parameter power supply voltage ripple voltage note1 (measure at input terminal of power supply) unit 3.3 v 100 mvp-p vcc 5.0 v 100 mvp-p note1: the permissible ripple voltage includes spike noise. 4.3.4 fuse fuse parameter type supplier rating fusing current remarks tbd vcc tbd tbd tbd tbd note1 note1: the power supply capacity should be more than the fusing current. if the power supply capacity is less than the fusing current, the fuse may not blow for a short time, and then nasty smell, smoking and so on may occur.
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 11 4.4 power supply voltage sequence 4.4.1 sequence for lcd panel signal processing board 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 = 5.0v", a protection circuit may work, and then this product may not work. note2: display (clk, hsync, vsync, de, r0 to r5, g0 to g5, b0 to b5) and function (dps) signals 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. if customer stops the display and function signals, they should be cut vcc. 4.4.2 sequence for backlight inverter (option) note1: these are the display and function signals for lcd panel signal processing board. note2: the backlight inverter voltage (vddb) should be inputted within the valid period of display and function signals, in order to avoid unstable data display. display and function signals note1 vddb valid period n ote2 valid period off 0ms < t < 35ms 0ms < t < 35ms on 3.0v or 4.75v 0v tr < 30ms vcc n ote1 display and function signals note2 toff > 50ms
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 12 4.5 connections and functions for interface pins 4.5.1 lcd panel signal processing board cn1 socket (lcd module side): df9c-31p-1v (hirose electric co., ltd.) adaptable plug: df9-31s-1v (hirose electric co., ltd.) pin no. symbol signal remarks 1 gnd ground 2clk dot clock 3 hsync horizontal synchronous 4 vsync vertical synchronous 5 gnd ground - 6 r0 red data (lsb) least significant bit 7r1 red data 8r2 red data 9r3 red data 10 r4 red data - 11 r5 red data (msb) most significant bit 12 gnd ground - 13 g0 green data (lsb) least significant bit 14 g1 green data 15 g2 green data 16 g3 green data 17 g4 green data - 18 g5 green data (msb) most significant bit 19 gnd ground - 20 b0 blue data (lsb) least significant bit 21 b1 blue data 22 b2 blue data 23 b3 blue data 24 b4 blue data - 25 b5 blue data (msb) most significant bit 26 gnd ground - 27 de selection of de / fixed mode data enable signal: de mode high or open: fixed mode note1 28 vcc power supply 29 vcc power supply 30 nc non connection - 31 dps selection of scan direction high: reverse scan low or open: normal scan note1 note1: see " 4.7 display positions and scanning directions ".
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 13 4.5.2 backlight lamp attention: vblh and vblc must be connected correctly. if customer connects wrongly, customer will be hurt and the module will be broken. cn2 plug: bhr-03vs-1 (j.s.t mfg. co., ltd.) adaptable socket: sm03 (4.0) b-bhs-tb (j.s.t mfg. co., ltd.) pin no. symbol signal remarks 1 vblc low voltage (cold) cable color: gray 2 vblh high voltage (hot) cable color: white 3 vblh high voltage (hot) cable color: white 4.5.3 positions of plug and a socket barcode label n ame plate cn2 caution label low voltage (cold) high voltage (hot) 1 3 cn1 1 31 2 30 3 rear side
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 14 4.6 display colors and input data signals this product can display in equivalent to 262,144 colors in 64 scale. also the relation between display colors and input data signals is as the following table. data signal (0: low level, 1: high level) display colors r5 r4 r3 r2 r1 r0 g5 g4 g3 g2 g1 g0 b5 b4 b3 b2 b1 b0 basic colors black blue red magenta green cyan yellow white 000000 000000 111111 111111 000000 000000 111111 111111 000000 000000 000000 000000 111111 111111 111111 111111 000000 111111 000000 111111 000000 111111 000000 111111 red scale black dark bright red 000000 000001 000010 : : 111101 111110 111111 000000 000000 000000 : : 000000 000000 000000 000000 000000 000000 : : 000000 000000 000000 green scale black dark bright green 000000 000000 000000 : : 000000 000000 000000 000000 000001 000010 : : 111101 111110 111111 000000 000000 000000 : : 000000 000000 000000 blue scale black dark bright blue 000000 000000 000000 : : 000000 000000 000000 000000 000000 000000 : : 000000 000000 000000 000000 000001 000010 : : 111101 111110 111111
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 15 4.7 display positions the following table is the coordinates per pixel (see " 4.8 scanning directions ".). c (0, 0 ) rg b c( 0, 0) c( 1, 0) ? ? ? c( x, 0) ? ? ? c(638, 0) c(639, 0) c( 0, 1) c( 1, 1) ? ? ? c( x, 1) ? ? ? c(638, 1) c(639, 1) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? c( 0, y) c( 1, y) ? ? ? c( x, y) ? ? ? c(638, y) c(639, y) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? c( 0, 478) c( 1, 478) ? ? ? c( x, 478) ? ? ? c(638, 478) c(639, 478) c( 0, 479) c( 1, 479) ? ? ? c( x, 479) ? ? ? 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. note1: meaning of c (x, 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 figure 1. normal scan (dps: low or open) c (0,0) d (0,0) c (0,479) d (0,479) c (639,479) d (639,479) c (639,0) d (639,0) n ote1 figure 2. reverse scan (dps: high) n ote1 c (0,0) d (639,479) c (0,479) d (639,0) c (639,479) d (0,0) c (639,0) d (0,479)
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 16 4.9 input signal timings for lcd panel signal processing board 4.9.1 outline of input signal timings this diagram indicates virtual signal for set up to timing. ? horizontal signal note1: fixed mode cannot be used while working of de mode. note2: this diagram indicates virtual signal for set up to timing. ? vertical signal note1: fixed mode cannot be used while working of de mode. note2: this diagram indicates virtual signal for set up to timing. note3: see " 4.9.3 input signal timing chart " for numeration of pulse. horizontal back-porch (thb) horizontal front-porch (thf) horizontal synchronizing pulse width (thp) horizontal synchronizing cycle (th) horizontal display period (thd) hsync note1 display period de (data enable) vertical back-porch (tvb) vertical front-porch (tvf) vertical synchronizing pulse width (tvp) vertical synchronizing cycle (tv) vertical display period (tvd) 1 2 34 480 vsync note1 display period note2 n ote3 de (data enable)
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 17 4.9.2 timing characteristics (a) fixed mode (note1) parameter symbol min. typ. max. unit remarks frequency 1/tc 21.0 25.2 29.0 mhz 39.7 ns (typ.) duty tcd 0.4 0.5 0.6 - clk rise time, fall time tcrf - - 10 ns - setup time tds 8 - - ns clk-data hold time tdh 12 - - ns data (r0-r5) (g0-g5) (b0-b5) rise time, fall time tdrf - - 10 ns - 30.0 31.8 33.6 s 31.4 khz (typ.) cycle th 800 clk display period thd 640 clk front-porch thf 16 clk pulse width thp 10 96 - clk back-porch thb - 48 134 clk total of pulse width and back-porch thp + thb 144 clk note2 setup time ths 8 - - ns clk- hsync hold time thh 12 - - ns hsync rise time, fall time thrf - - 10 ns - 16.1 16.7 17.2 ms 59.9 hz (typ.) cycle tv 525 h display period tvd 480 h front-porch tvf 12 h pulse width tvp 1 - 2 h back-porch tvb 31 - 32 h total of pulse width and back-porch tvp + tvb 33 h note2 hsync- vsync thv 1 - - clk vsync-hsync tvh 30 - - ns vsync rise time, fall time tvrf - - 10 ns - 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.
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 18 (b) de mode (note1, note2) parameter symbol min. typ. max. unit remarks frequency 1/tc 21.0 25.2 29.0 mhz 39.7 ns (typ.) duty tcd 0.4 0.5 0.6 - clk rise time, fall time tcrf - - 10 ns - setup time tds 8 - - ns clk-data hold time tdh 12 - - ns data (r0-r5) (g0-g5) (b0-b5) rise time, fall time tdrf - - 10 ns - pulse width tvp 1 2 - h setup time tvds 1 - - clk vsync-de timing hold time tvdh 1 - - clk vsync rise time, fall time tvrf - - 10 s - 30.0 31.8 33.6 s 31.4 khz (typ.) cycle th - 800 - clk horizontal display period thd 640 clk - 16.1 16.7 17.2 ms 59.9 hz (typ.) cycle tv - 525 - h vertical (one frame) display period tvd 480 h - setup time tdes 8 - - ns clk-de hold time tdeh 12 - - ns de rise time, fall time tderf - - 10 ns - note1: definition of parameters is as follows. tc = 1clk, tcd = tch/tc, th = 1h note2: hsync signal (pin no.3 of cn1) is not used inside the product at de mode. do not keep pin open to avoid noise problem.
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 19 4.9.3 input signal timing chart (a) fixed mode (note: x=0 to 639) 1 clk hsync hsync hsync hsync vsync 2 3 data (r0-r5) (g0-g5) (b0-b5) (note: y = 0 to 479) 2 1 1 d(x,0) d(x,478)d(x,479) d(x,y) invalid invalid 1 d(0,y)d(1,y) d(x,y) d(638,y)d(639,y) invalid invalid d(0,y)d(1,y) d(639,y) invalid invalid 1clk 144h (fixed) 640h (fixed) thp thb thd thf 16h (fixed) 33h (fixed) 480h (fixed) 1h tvp tvb tvd tvf 12h (fixed) data (r0-r5) (g0-g5) (b0-b5) data (r0-r5) (g0-g5) (b0-b5)
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 20 (b) de mode horizontal timing clk de data (r0-r5) (g0-g5) (b0-b5) invalid invalid 1 2 639 640 thd th vertical timing vsync de data (r0-r5) (g0-g5) (b0-b5) invalid invalid 1 2 479 480 tvp tvds tvdh tvd tv
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 21 (c) common 0.7vcc 0.5vcc 0.3vcc clk hsync thrf thh ths 0.5vcc 0.7vcc 0.5vcc 0.3vcc hsync vsync tvrf thv tvh 0.5vcc 0.7vcc 0.5vcc 0.3vcc tc tcrf tch 0.7vcc 0.5vcc 0.3vcc invalid clk data (r0-r5) (g0-g5) (b0-b5) 0.7vcc 0.5vcc 0.3vcc tds tdh tdrf tdrf tdeh tdes tderf tdeh tdes tderf de tcrf 2
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 22 4.10 optics 4.10.1 optical characteristics parameter note1 condition symbol min. typ. max. unit remarks luminance white at center r = 0 , l = 0 , u = 0 , d = 0 l 280 350 - cd/m 2 - contrast ratio white/black at center r = 0 , l = 0 , u = 0 , d = 0 cr 150 300 - - note2 luminance uniformity - lu - 1.25 1.40 - note3 x coordinate wx - 0.313 - - white y coordinate wy - 0.329 - - x coordinate rx - tbd -- red y coordinate ry - tbd -- x coordinate gx - tbd -- green y coordinate gy - tbd -- x coordinate bx - tbd -- chromaticity blue y coordinate by - tbd -- color gamut r = 0 , l = 0 , u = 0 , d = 0 at center, against ntsc color space c3540 -% note4 black to white ton - 24 tbd ms response time white to black toff - 21 tbd ms note5 note6 right u = 0 , d = 0 , cr = 10 r 70 85 - left u = 0 , d = 0 , cr = 10 l 70 85 - up r = 0 , l = 0 , cr = 10 u 70 85 - viewing angle down r = 0 , l = 0 , cr = 10 d 70 85 - note7 note1: measurement conditions are as follows. ta=25 c, vcc=3.3v, ibl= 5.0marms/lamp, display mode: vga, horizontal cycle = 31.4khz, vertical cycle = 59.9hz, 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 method for luminance is as follows. note2: see " 4.10.2 definition of contrast ratio ". note3: see " 4.10.3 definition of luminance uniformity ". note4: these coordinates are found on cie 1931 chromaticity diagram. note5: product surface temperature: topf = tbd c note6: see " 4.10.4 definition of response times ". note7: see " 4.10.5 definition of viewing angles ". 1 photodetector (topcon bm-5a) lcd module (product) 50cm 2 2
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 23 4.10.2 definition of contrast ratio the contrast ratio is calculated by using the following formula. luminance of white screen luminance of black screen 4.10.3 definition of luminance uniformity the luminance uniformity is calculated by using following formula. maximum luminance from to minimum luminance from 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 "black" to "white", or "white" to "black" on the same screen point, by photo-detector. ton is the time it takes the luminance change from 10% up to 90%. also toff is the time it takes the luminance change from 90% down to 10% (see the following diagram.). 4.10.5 definition of viewing angles 106 320 533 80 240 400 contrast ratio (cr) = luminance uniformity (lu) = 100% 90% 10% 0% ton toff luminance white black left upper lower n ormal axis (perpendicular) u d r l 12 o?clock right 3 o?clock 9 o?clock
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 24 5. r eli a b ility t e sts test item condition judgement high temperature and humidity (operation) 60 3 c, rh = 90%, 240hours display data is white. high temperature (operation) 70 3 c, 240hours display data is white. heat cycle (operation) -10 3 c 1hour 70 3 c 1hour 50cycles, 4hours/cycle display data is white. thermal shock (non operation) -20 3 c 30minutes 80 3 c 30minutes 100cycles, 1hour/cycle temperature transition time is within 5 minutes. esd (operation) 150pf, 150 ? , 10kv 9 places on a panel surface note2 10 times each places at 1 sec interval dust (operation) sample dust: no. 15 (by jis-z8901) 15 seconds stir 8 times repeat at 1 hour interval no display malfunctions note1 vibration (non operation) 5 to 100hz, 19.6m/s 2 1 minute/cycle x, y, z direction 120 times each directions mechanical shock (non operation) 539m/ s 2 , 11ms x, y, z direction 5 times each directions no display malfunctions note1 no physical damages note1: display functions are checked under the same conditions as product inspection. note2: see the following figure for discharge points. 2
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 25 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 this contents! ! 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 will 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 ? ? ? ? do not touch the working backlight. customer will be in danger of an electric shock. ? ? ? ? do not touch the working backlight. customer will be in 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 2 and to be not greater 11ms, pressure: to be not greater tbd n) 6.3 attentions ! 6.3.1 handling of the product take hold of both ends without touch the circuit board cover when customer pulls out products (lcd modules) from inner packing box. if customer touches it, products may be broken down or out of adjustment, because of stress to mounting parts. do not hook cables nor pull connection cables such as lamp cable and so on, for fear of damage. if customer puts down the product temporarily, the product puts on flat subsoil as a display side turns down. take the measures of electrostatic discharge such as earth band, ionic shower and so on, when customer deals with the product, because products may be damaged by electrostatic. the torque for mounting screws must never exceed 0.294n ? m. higher torque values 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 drawings). and do not add undue stress to any portion (such as bezel flat area) except mounting hole portion. bends or twist described above and undue stress to any portion except mounting hole portion may cause display un-uniformity. 2
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 26 do not press or rub on the sensitive display surface. if customer clean on the panel surface, nec corporation recommends using the cloth with ethanolic liquid such as screen cleaner for lcd. do not push-pull the interface connectors while the product is working, because wrong power sequence may break down the product. 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. this damage may cause a lamp breaking and abnormal operation of high voltage circuit. 6.3.2 environment do not operate or store in high temperature, high humidity, dewdrop atmosphere or corrosive gases. keep the product in antistatic pouch in room temperature, because of avoidance for dusts and sunlight, if customer stores the product. in order to prevent dew condensation occurring by temperature difference, the product packing box must be opened after leave under the environment of an unpacking room temperature enough. because a situation of dew condensation occurring is changed by the environmental temperature and humidity, evaluate the leaving time sufficiently. (recommendation leaving time: 6 hour or more with packing state) do not operate in high magnetic field. circuit boards may be broken down by it. use an original protection sheet on the product surface (polarizer). adhesive type protection sheet should be avoided, because it may change color or properties of the polarizer. 6.3.3 characteristics the following items are neither defects nor failures. response time, luminance and color may be changed by ambient temperature. the lcd may be seemed luminance non-uniformity, flicker, vertical seam or small spot by 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 by viewing angle because of the use of condenser sheet in the backlight. optical characteristics may be changed by input signal timings. the interference noise of input signal frequency for this product's signal processing board and luminance control frequency of customer's backlight inverter may appear on a display. set up luminance control frequency of backlight inverter so that the interference noise does not appear. 6.3.4 other all gnd, backlight inverter ground (gndb), vcc and backlight inverter power supply voltage (vddb) terminals should be used without a non-connected line. do not disassemble a product or adjust volume without permission of nec corporation. see "replacement manual for lamp hold erset", if customer would like to replace backlight lamps. pay attention not to insert waste materials inside of products, if customer uses screwnails. pack the product with original shipping package, because of avoidance of some damages during transportation, when customer returns it to nec corporation for repair and so on. 2
NL6448BC33-53 preliminary data sheet dod-m-1309 (2nd edition) 27 7. outline drawings 7.1 front view unit : mm n ote1: the values in parentheses are for reference. n ote2: the torque for mounting screws must never exceed 0.294n ? m. n ote3: mounting hole portions (4 pieces) 2
NL6448BC33-53 preliminary data sheet dod-m-1309 (2nd edition) 28 7.2 rear view n ote1: the values in parentheses are for reference. n ote2: the torque for mounting screws must never exceed 0.294n ? m. unit : mm
NL6448BC33-53 preliminary data sheet dod-m- 1309 (2nd edition) 29 revision history edition document number prepared date revision contents and signature 1st edition dod-m- 1218 nov. 5, 2002 revision contents new issue 2nd edition dod-m- 1309 jan. 30, 2003 revision contents p. 5 ? : ? : ? : ; ; ? : ? : ? : = = = = ? : ? : ? : ? : (added) p. 26 ? : (added) p. 27 ? : signature of writer t. i to r. kawashima a pproved by t. i to checked by p repared b y r. kawashima writer

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