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nl6448ac33 - 10 tft color lcd module 26 cm (10.4 type), 640 480 pixels 4096 colors, incorporated one lamp/edge-light type backlight document no. en0094ej2v1ds00 (2nd edition) (nc-1011) date published may 1996 m printed in japan 1995 description NL6448AC33-10 is a tft (thin film transistor) active matrix color liquid crystal display (lcd) module comprising amorphous silicon tft attached to each signal electrode, a driving circuit, and a backlight. the 26 cm diagonal display area contains 640 480 pixels and can display 4096 colors simultaneously. by utilizing one lamp/edge-light type backlight, a very thin profile design and low power consumption have been achieved. features a high contrast ratio, wide color gamut a high-speed response a incorporated edge light type backlight and inverter a data enable function applications a notebook personal computer (pc), word processor a display terminals for control system a new media a control board for nc machine a monitors for process controller data sheet
2 nl6448ac33 - 10 structure and functions a tft color lcd module comprises a tft lcd panel, lsis for driving liquid crystal, and the backlight. the tft lcd panel is composed of a tft array glass substrate superimposed on a color filter glass substrate with liquid crystal filled in the narrow gap between two substrates. the backlight apparatus is located on the backside of the lcd panel. rgb (red, green, blue) data signals are sent to lcd panel drivers after modulation into suitable forms for active matrix addressing through signal processor. each of the liquid crystal cells acts as an electro-optical switch that controls the light transmission from the backlight by a signal applied to a signal electrode through the tft switch. block diagram outline of characteristics (at room temperature) display area 211.2(h) 158.4(v) mm drive system a-si tft active matrix display colors 4096 colors number of pixels 640 480 pixels pixel arrangement rgb vertical stripe pixel pitch 0.33(h) 0.33(v) mm module size 270 1(h) 183 1(v) 13.0(d) mm weight 700 g (typ.) contrast ratio 150 : 1 (typ.) viewing angle (more than the contrast ratio of 10 : 1) horizontal : 45 (typ. left side, right side) vertical : 25 (typ. up side), 25 (typ. down side) designed viewing direction 12 o'clock (upper direction) color gamut 55 % (typ. center, to ntsc) response time 40 msec. (max.), "white" to "black" luminance 90 cd / m 2 (typ. ac adapter mode), 55 cd / m 2 (typ. battery mode) signal system 4-bit digital signals for each of rgb primary colors, synchronous signals (hsync, vsync), dot clock (clk) supply voltages 5 v (logic, lcd driving), 5.2 to 20 v (backlight) backlight a fluorescent lamp with inverter (cold cathode type) power consumption 4.8 w (typ. ac adapter mode), 3.7 w (typ. battery mode) h - driver tft lcd panel (640 3(h) 480(v)) r-data g-data b-data clk hsync vsync de mode vccoffo blofo aca brth brtl h - driver v - driver backlight signal processor lcd timing controller level shift supply voltages for lsis power supply circuit backlight power supply drivers
3 nl6448ac33 - 10 item specification unit module size 270.0 1(h) 183.0 1(v) 13.0 max.(d) mm display area 211.2(h) 158.4(v) (diagonal size 10.4 typ.) mm number of pixels 640(h) 480(v) pixel dot pitch 0.11(h) 0.33(v) mm pixel pitch 0.33(h) 0.33(v) mm pixel arrangement rgb (red, green, blue) vertical stripe display colors 4 096 color weight 720 (max.) g absolute maximum ratings general specifications parameter symbol rating unit remarks v dd 0 to 21.0 v v cc C 0.3 to 6.5 v ta = 25 ? c input voltage v i C0.3 to v cc +0.3 v storage temp. t st C20 to 60 ? c operating temp. t op 0 to 50 ? c module surface * 95 % relative humidity ta = 40 ? c 85 % relative humidity ta = 50 ? c electrical characteristics (1) logic, lcd driving an inverter is incorporated within the module. (a luminance control variable resistor is extra) absolute humidity shall not exceed ta = 50? c, 85 % relative humidity level ta > 50 ? c no condensation ?? ?? * measured at center of display area * at dot-checkered pattern parameter symbol min. typ. max. unit note supply voltage v cc 4.75 5.0 5.25 v logic input "l" v il 0 C 0.8 v ttl logic input "h" v ih 2.2 C v cc v ttl supply current i cc C 200 350 ma v cc = 5.0 v ta = 25 ?c * (2) backlight parameter symbol min. typ. max. unit note supply voltage v dd 5.2 C 20.0 v backlight power supply C 3.8 C w v dd = 12 v C C 5.9 w C C 2.7 C w v dd = 7.2 v C C 4.2 w C ta = 25 ?c power consumption p dd ac adapter mode (aca = l) ac adapter mode (aca = h) supply voltage sequence v dd vccoffo v cc signal transmission period time 0 * 2 < = 0 * 2 < = voltage * 1 the supply voltage of the external driver for input signals should be the same as vcc. * 2 apply v dd within the lcd operation period. when the backlight turns on before lcd operation or the lcd operation turns off before the backlight turns off, the display may momentarily become white. * 3 when a battery is used as v dd , the backlight must be controlled by bloffo (backlight on/off signal). * 3 in the case of vccoffo = low level, please keep whole data and synchronous signals low level or high impedance. v cc v cc lcd module buffer humidity supply voltage
4 nl6448ac33 - 10 interface pin connection (1) interface signals, power supply connector : il-z-r10pl-smty + il-z-r13pl-smty + il-z-r11pl-smty (jae) (cn1 : no.1 to 10) (cn2 : no.11 to 23) (cn3 : no.24 to 34) pin no. symbol function 1 clk dot clock 2 gnd signal ground 3 gnd signal ground 4 hsync horizontal sync. 5 vsync vertical sync. 6 gnd signal ground 7r 0 red data (lsb) 8r 1 red data 9r 2 red data 10 r 3 red data (msb) 11 gnd signal ground 12 g 0 green data (lsb) 13 g 1 green data 14 g 2 green data 15 g 3 green data (msb) 16 gnd signal ground 17 b 0 blue data (lsb) pin no. symbol function 18 b 1 blue data 19 b 2 blue data 20 b 3 blue data (msb) 21 gnd signal ground 22 aca brightness mode select 23 bloffo backlight on/off signal 24 gnd signal ground 25 v cc logic power supply 26 v dd backlight power supply 27 v dd backlight power supply 28 n.c. 29 gndb backlight ground 30 gndb backlight ground 31 de data enable 32 mode timing mode select 33 vccoffo v cc on/off signal 34 gnd signal ground (2) external variable resistor 1) connector for luminance control (on the left side) : il-z-r2pl-smty (jae) (cn4 : no.1 to 2) pin no. symbol function 1 brth luminance control input pin no. symbol function 1 brth luminance control input 3 brtl luminance control input 5 n.c. pin no. symbol function 2 brtl luminance control input pin no. symbol function 2 brth luminance control input 4 brtl luminance control input 2) connector for luminance control (on the right back) : lz-5p-sl-smt (jae) (cn5 : no.1 to 5) note 1 : the variable resistor for luminance control should be 10 k w type, and zero point of the resistor should correspond to the minimum of luminance. brth brtl (10 k w 5 %, b curve) note 2 : the pins for brth and brtl of luminance control connector on the left side (cn4) and the right side (cn5) are connected each other in the module. then, any one pair of the pins are available for luminance control variable resistor. < a way of connecting variable resistor to pins > caution connect the variable resistor of fixed resistor (10 k w or less) to the pin of brth and brtl. if the resistor (10 k w or less) is not connected, the life of fluorescent lamp would be short.
5 nl6448ac33 - 10 (3) pin description symbol function r0 C r3 g0 C g3 display data b0 C b3 hsync horizontal sync. vsync vertical sync. clk dot clock de data enable mode timing mode select vccoffo v cc on / off signal aca brightness mode select bloffo backlight on/off signal brth brtl v cc + 5.0 v ( 5 %) v dd + 5.2 v to + 20.0 v gnd logic ground gndb backlight ground description 4-bit digital signals for each of rgb primary colors. horizontal synchronous signal. vertical synchronous signal. timing signal for display data. module strobes the display data at the falling edge of clk. the signal that defines the graphic data that is to be displayed on the screen. when mode = l, the function of this pin is ignored. (keep de high or low) when mode = h, the period of de = h is the display period of the module. mode = h : de mode (data enable function is active) mode = l : fixed timing mode (data enable function is ignored) vccoffo = h : power on inside of the module. vccoffo = l : power off inside of the module. aca = h : battery mode (low luminance) aca = l : ac ada[ter mode (high luminance) bloffo = h : backlight on bloffo = l : backlight off connect a variable resistor (10 k w 5 %, b curve) between brth and brtl. power supply for logic and lcd driving. power supply for backlight ground for v cc ground for backlight gnd is not connected to the module frame. gndb is not connected to the module frame. gndb is separated from gnd in the module. backlight brightness control upper side < side view >< side view > display side display side < rear view > lower side 1 5 1 5 cn5 1 cn1 cn2 cn3 cn4 10 11 23 24 34 1 2 1 10 11 23 24 34 1 2
6 nl6448ac33 - 10 display colors vs. input data signals black blue red magenta green cyan yellow white black dark - bright red black dark - bright green black dark - bright blue - - - basic colors red grayscale blue grayscale green grayscale display data signal (0 : low level, 1 : high level) r3 r2 r1 r0 0000 0000 1111 1111 0000 0000 1111 1111 0000 0001 0010 1101 1110 1111 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 g3 g2 g1 g0 0000 0000 0000 0000 1111 1111 1111 1111 0000 0000 0000 0000 0000 0000 0000 0001 0010 1101 1110 1111 0000 0000 0000 0000 0000 0000 b3 b2 b1 b0 0000 1111 0000 1111 0000 1111 0000 1111 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0001 0010 1101 1110 1111 note : colors are developed in combination with 4 bit signal (16 steps in grayscale) of each primary red, green, and blue color. this process can result in up to 4096 (16 16 16) colors. ---- ---- ---- ---- ---- ---- ---- ---- ----
7 nl6448ac33 - 10 fixed timing mode specifications (1) input signal specifications (fixed timing mode) parameter symbol min. typ. max. unit remarks 1 / tc 21.0 25.175 29.0 mhz 39.722 ns (typ.) tch / tc 0.4 0.5 0.6 CC tc r f 1 0 n s 30.0 31.778 33.6 m s 31.468 khz (typ.) 800 clk 25.422 m s 640 clk 0.636 m s 16 clk 3.813 m s 10 96 clk 1.907 m s 48 134 clk thch 12 ns thcs 8 ns tvh 15 ns tvs 15 ns thrf 10 ns 16.1 16.683 17.2 ms 59.94 hz (typ.) 525 h 15.253 ms 480 h 0.381 ms 12 h 0.063 ms 12 h 0.985 ms 31 32 h tvrf 10 ns tds 8 ns tdh 12 ns tdrf 10 ns clk th thd thf thp thb tv vsync hsync data r0 C r3 g0C g3 b0 C b3 tvd tvf tvp tvb all of parameters should be kept in the specified range. thp + thb = 144 clk tvp + tvb = 33 h mode (pin no.32) = low
8 nl6448ac33 - 10 (2) definition of input signal timing (fixed timing mode) note 1 horizontal display porch (thd) vertical display porch (tvd) vertical back porch (tvb) vertical front porch (tvf) horizontal period (th) vertical period (tv) horizontal back porch (thb) horizontal front porch (thf) horizontal synchronous pulse width (thp) vertica synchronous pulse width (tvp) hsync h-disp note 2 vsync v-disp note 2 note 1 : regarding how ro conut h/clk, refer to the input signal timing chart (fixed timing mode). thp + thb and tvp + tvb are fixed. the display position will be wrong, when different values are selected. note 2 : these do not exist as signals. < horizontal > < vertical > tc tch tds thch thcs tdh tdrf thrf tvrf tvh tvs tcrf tc = 39.722 ns tch = 15.9 ns (min.) tcrf = 10 ns (max.) tch/tc = 0.4 to 0.6 tds = 8 ns (min.) tdh = 12 ns (min.) tdrf = 10 ns (max.) thch = 12 ns (min.) thcs = 8 ns (min.) thrf = 10 ns (max.) tvrf = 10 ns (max.) tvh = 15 ns (min.) tvs = 15 ns (min.) v ih 1.5 v v il v ih 1.5 v v il v ih 1.5 v v il v ih 1.5 v v il 1.5 v 1.5 v clk hsync vsync hsync r0 - r3 g0 - g3 b0 - b3
9 nl6448ac33 - 10 (3) input signal timing chart (fixed timing mode) 1 h 2 h 31 h * 480 h 12 h 1234 32 34 33 512 513 514 524 525 34 513 515 514 d(x,0) d(x,y) d(x,478) d(x,479) x = 0 to 639 d(0,y) d(1,y) d(638,y) d(639,y) d(x,y) 1 clk 48 clk 96 clk 640 clk 16 clk 196 97 143 144 145 784 785 786 799 800 vsync hsync hsync hsync hsync clk r0 - r3 g0 - g3 b0 - b3 r0 - r3 g0 - g3 b0 - b3 * ) tvp (min.) is 1h. * ) tvp + tvb = 33h (fixed). ** * * ) thp (min.) is 10 clk. * ) thp + thb = 144 clk (flxed). d (0, 0) d (0, 1) d (0, y) d (0, 478) d (0, 479) d (1, 0) d (1, 1) d (1, y) d (1, 478) d (1, 479) d (x, 0) d (x, 1) d (x, y) d (x, 478) d (x, 479) d (638, 0) d (638, 1) d (638, y) d (638, 478) d (638, 479) d (639, 0) d (639, 1) d (639, y) d (639, 478) d (639, 479) display position of input data
10 nl6448ac33 - 10 parameter symbol min. typ. max. unit remarks 1 / tc 21.0 25.175 29.0 mhz 39.722 ns (typ.) tch / tc 0.4 0.5 0.6 CC tcrf 10 ns 30.0 31.778 33.6 m s 31.468 khz (typ.) 800 clk 25.422 m s 640 clk 0 0.636 m s 0 16 clk 3.813 m s 10 96 clk 1.907 m s 4 48 clk thch 12 ns thcs 8 ns tvh 15 ns tvs 15 ns thrf 10 ns 16.1 16.683 17.2 ms 59.94 hz (typ.) 525 h 15.253 ms 480 h 0 0.381 ms 012 h 0.063 ms 12 h 0.985 ms 4 31 h tvrf 10 ns tds 8 ns tdh 12 ns tdrf 10 ns tes 8 ns teh 12 ns terf 10 ns de mode spedifications (1) input signal specifications (de mode) clk th thd thf thp thb tv vsync hsync data r0 C r3 g0Cg3 b0 C b3 de tvd tvf tvp tvb all of parameters should be kept in the specified range. mode (pin no.32) = high
11 nl6448ac33 - 10 (2) definition of input signal timing (de mode) note tc tch tcrf tds tdh tdrf thch thcs thrf tvrf tvh tvs 1.5 v 1.5 v 1.5 v v ih v il 1.5 v v ih v il 1.5 v v ih v il 1.5 v v ih v il tc = 39.722 ns tch = 15.9 ns (min.) tcrf = 10 ns (max.) tch = tc = 0.4 to 0.6 tds = 8 ns (min.) tdh = 12 ns (min.) tdrf = 10 ns (max.) thch = 12 ns (min.) thcs = 8 ns (min.) tvrf = 10 ns (max.) tvh = 15 ns (min.) tvs = 15 ns (min.) clk r0 - r3 g0 - g3 b0 - b3 de vsync hsync 1.5 v v ih v il terf tes teh thrf = 10 ns (max.) hsync note 1 : regarding how ro count h/clk, refer to the input signal timing chart (de mode). horizontal display period (thd) vertical display period (tvd) vertical back-porch (tvb) vertical front-porch (tvf) horizontal period (th) vertical period (tv) horizontal back-porch (thb) horizontal front-porch (thf) horizontal synchronous pulse width (thp) vertical synchronous pulse width (tvp) hsync de vsync de < horizontal > < vertical >
12 nl6448ac33 - 10 (3) input signal timing chart (de mode) d (0, 0) d (0, 1) d (0, y) d (0, 478) d (0, 479) d (1, 0) d (1, 1) d (1, y) d (1, 478) d (1, 479) d (x, 0) d (x, 1) d (x, y) d (x, 478) d (x, 479) d (638, 0) d (638, 1) d (638, y) d (638, 478) d (638, 479) d (639, 0) d (639, 1) d (639, y) d (639, 478) d (639, 479) display position of input data tvd *** tvb ** tvp tvf 123 vsync hsync de r0 - r3 g0 - g3 b0 - b3 de r0 - r3 g0 - g3 b0 - b3 d(x,0) d(x,y) d(x,479) x = 0 to 639 d(0,y) d(x,y) d(638,y) d(1,y) d(639,y) * ) tvp (min.) is 1h. ** ) tvb (min.) is 4h. *** ) tvd (typ.) is 480h. hsync clk de r0 - r3 g0 - g3 b0 - b3 thp * thb ** thd *** thf d(0,y) d(1,y) d(638,y)d(639,y) 1 clk 1 h * * ) thp (min.) is 10 clk. ** ) thb (min.) is 4 clk. *** ) thd (typ.) is 640 clk.
13 nl6448ac33 - 10 general caution (1) caution for taking out the module 1) pick the pouch only, when taking out module from a carrier box. (2) cautions for handling the module 1) as the electrostatic discharges may break the lcd module, handle the lcd module with care against electrostatic discharges. peel protection sheet out from the lcd panel surface as slowly as possible. 2) as the lcd panel and backlight element are made from fragile glass material, impulse and pressure to the lcd module should be avoided. 3) as the surface of polarizer is very soft and easily scratched, use a soft dry cloth without chemicals for cleaning. 4) do not pull the interface connectors in or out while the lcd module is operating. 5) put the module display side down on a flat horizontal plane. 6) handle connectors and cables with care. (3) cautions for the operation 1) when the module is operating, do not lose dotclk, hsync, or vsync signal. if any one of these signals is lost, the lcd panel would be damaged. 2) obey the supply voltage sequence. if wrong sequence is applied, the module would be damaged. 3) connect the variable resistor or fixed resistor (10 k w or less) to the pin of brth and brtl. if the resistor is not connected, the life of fluorescent lamp would be short. (4) cautions for the atmosphere 1) dew drop atmosphere should be avoided. 2) do not store and/or operate the lcd module in a high temperature and/or high humidity atmosphere. storage in an electro-conductive polymer packing pouch and under relatively low temperature atmosphere is recommended. (5) caution for the module characteristics 1) do not apply fixed pattern data signal to the lcd module at product aging. applying fixed pattern for a long time may cause image sticking. (6) other cautions 1) do not disassemble and/or reassemble lcd module. 2) do not readjust variable resistor or switch etc. 3) when returning the module for repair or etc., please pack the module not to be broken. we recommend to use our shipping package. do not touch an inverter circuit -- a warning label is stuck on -- while the lcd module is operating, because of dangerous high voltage. warning liquid crystal display has the following specific characteristics. these are not defects or malfunctions. the display condition of lcd module may be affected by the ambient temperature. the lcd module uses cold cathode tubes for backlighting. optical characteristics, like luminance or uniformity, will change during time. uneven brightness and/or small spots may be noticed depending on different display patterns.
14 nl6448ac33 - 10 outline drawing (unit in mm) 112 10 11 23 24 34 183 1.0 (166) (158.4) (display area) + 132 0.3 + 270 1.0 (220.9) (52.1) (22.3) (23) (15) (19.6) (211.2) (display area) + 262 0.3 + 151 0.3 + (64) (4) (2.7) (3) 13.0 max. (11) (11) (8) (6) (4) (2.7) (3) (6) (4) (7) (4) (8.2) a a bb 4- 3.5 f 4-cpims2 cn1 cn2 cn3 cn4 b-b a-a
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no part of this document may 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 device described herein or any other liability arising from use of such device. no license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of nec corporation or others. nl6448ac33 - 10

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