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tft color lcd module NL6448AC33-13 description NL6448AC33-13 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 262144 colors simultaneously. by utilizing one lamp/edge-light type backlight, a very thin profile and low power consumption have been achieved. features ? 6-bit digital rgb signals ? 3.3 v operation (5.0 v available) ? thin and light weight ? low reflection ? low power consumption ? incorporated edge light type backlight (one lamp, inverter-less) ? data enable function applications ? notebook personal computer (pc), word processor ? display terminals for control system ? new media ? monitors for process controller 26 cm (10.4 type), 640 480 pixels, 262144 colors, incorporated one lamp/edge-light type backlight ? 1995 data sheet document no. en0113ej1v0ds00 date published november 1995 p printed in japan
NL6448AC33-13 2 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 digital signal processor lcd timing controller power supply circuit level shift h-driver backlight v-driver 1920 lines 480 lines tft lcd panel h : 640 3 (r, g, b) v : 480 lsls drivers r0?5 g0?5 b0?5 clk hsnyc vsnyc de v cc vhv outline of characteristics (at room temperature) display area 211.2 (h) 158.4 (v) mm drive system a-si tft active matrix display colors 262144 colors number of pixels 640 480 pixels pixel arrangement rgb vertical stripe pixel pitch 0.33 (h) 0.33 (v) mm module size 243.0 (h) 179.0 (v) 8.0 max. (d) mm weight 385 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 : 20? (typ. up side), 40? (typ. down side) designed viewing direction ? wider viewing angle with contrast ratio : down side (6 oclock) ? wider viewing angle without image reversal: up side (12 oclock) ? optimum grayscale ( g = 2.2) : perpendicular color gamut 42 % (typ. center, to ntsc) response time 40 ms (max.), white to black luminance 70 cd/m 2 (typ.) signal system 6-bit digital signals for each of rgb primary colors, synchronous signals (hsync, vsync), dot clock (clk), de signal supply voltages 3.3 v [5.0 v] backlight edge light type, one cold cathode fluorescent lamp power consumption 2.1 w (typ. at 3.3 v)
3 NL6448AC33-13 general specifications item specification unit module size 243.0 0.5 (h) 179.0 0.5 (v) 8.0 max. (d) mm display area 211.2 (h) 158.4 (v) 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 262144 color weight 400 (max.) g absolute maximum ratings parameter symbol rating unit remarks supply voltage v cc C0.3 to 6.5 v t a = 25 ?c input voltage v i C0.3 to 6.5 v v i < v cc + 3.0 storage temp. t st C20 to 60 ?c operating temp. t op 0 to 50 ?c module surface * humidity 95 % relative humidity t a = 40 ?c no condensation 85 % relative humidity t a = 50 ?c absolute humidity shall not t a > 50 ?c exceed t a = 50 ?c, 85 % relative humidity level * measured at the display area electrical characteristics (1) logic, lcd driving t a = 25 ?c parameter symbol min. typ. max. unit remarks supply voltage v cc 3.0 3.3 3.6 v v cc = 3.3 v (4.75) (5.0) (5.25) (v cc = 5.0 v) logic input l voltage v il 0Cv cc 0.3 v logic input h voltage v ih v cc 0.7 C v cc v supply current i cc C * 1 270 * 2 400 ma v cc = 3.3 v C * 1 (190) * 2 (350) ma v cc = 5.0 v *1. checker flag pattern (in eiaj ed-2522) *2. theoretical maximum current pattern
NL6448AC33-13 4 (2) backlight t a = 25 ?c parameter symbol min. typ. max. unit remarks lamp current i l 2.0 2.5 5.0 marms 70 cd/m 2 : 2.5 marms (typ.) 90 cd/m 2 : 3.1 marms (typ.) lamp voltage v l C 480 C vrms lamp turn on voltage v s 650 1200 C vrms t a = 0 ?c 450 600 C vrms t a = 25 ?c oscillator frequency ft 50 54 58 khz note note recommended value of ft ? ft is within the specification. and ? ft = 1 (2n-1) th: hsync period 4th n : a natural number (1, 2, 3, ) if ft is out of the recommended value, interference between ft frequency and hsync frequency may cause beat on the display. supply voltage sequence *1 the supply voltage for input signals should be same as v cc . *2 apply vhv 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 the power is off, please keep whole signals (hsync, vsync, clk, data) low level or high impedance. 3.0 (4.75 v) 3.0 (4.75 v) 0s 5 NL6448AC33-13 interface pin connection (1) interface signals, power supply module side connector mating connector cn1 df9-41p-1v (no. 1 to 41) df9 -41s-1v ( a to c) supplier: hirose electric co., ltd. pin no. symbol function 1 gnd ground 2 clk dot clock 3 gnd ground 4 hsync horizontal sync. 5 vsync vertical sync. 6 gnd ground 7 gnd ground 8 gnd ground 9 r0 red data (lsb) 10 r1 red data 11 r2 red data 12 gnd ground 13 r3 red data 14 r4 red data 15 r5 red data (msb) 16 gnd ground 17 gnd ground 18 gnd ground 19 g0 green data (lsb) 20 g1 green data 21 g2 green data pin no. symbol function 22 gnd ground 23 g3 green data 24 g4 green data 25 g5 green data (msb) 26 gnd ground 27 gnd ground 28 gnd ground 29 b0 blue data (lsb) 30 b1 blue data 31 b2 blue data 32 gnd ground 33 b3 blue data 34 b4 blue data 35 b5 blue data (msb) 36 gnd ground 37 de data enable 38 v cc power supply note 1 39 v cc power supply note 1 40 v cc power supply note 1 41 mode timing mode select note 2 lamp side connector mating connector cn2 bhr-03vs-1 sm02 (8.0) b-bhs-tb supplier: j.s.t trading company, ltd. pin no. symbol function 1 vhv high voltage terminal 2 n. c. non-connection 3 gnd backlight ground notes 1. v cc : all v cc terminals should be connected to +3.3 v or +5.0 v. 2. mode: h = fixed mode l or open = de mode (2) backlight ? ? ? lower side upper side cn1 1 2 3 cn2 2 4 1 3 ? ? ? ? ? ? ? ? ? ? 41 40 lsb : least significant bit msb : most significant bit
NL6448AC33-13 6 display colors vs. input data signals display colors data signal (0: low level, 1: high level) r5 r4 r3 r2 r1 r0 g5 g4 g3 g2 g1 g0 b5 b4 b3 b2 b1 b0 black 000000 000000 000000 blue 000000 000000 111111 red 111111 000000 000000 basic colors magenta 111111 000000 111111 green 000000 111111 000000 cyan 000000 111111 111111 yellow 111111 111111 000000 white 111111 111111 111111 black 000000 000000 000000 000001 000000 000000 dark 000010 000000 000000 ||| red grayscale | | | ? ||| bright 111101 000000 000000 111110 000000 000000 red 111111 000000 000000 black 000000 000000 000000 000000 000001 000000 dark 000000 000010 000000 ||| green grayscale | | | ? ||| bright 000000 111101 000000 000000 111110 000000 green 000000 111111 000000 black 000000 000000 000000 000000 000000 000001 dark 000000 000000 000010 ||| blue grayscale | | | ? ||| bright 000000 000000 111101 000000 000000 111110 blue 000000 000000 111111 note colors are developed in combination with 6 bit signals (64 steps in grayscale) of each primary red, green, and blue color. this process can result in up to 262144 (64 64 64) colors.
7 NL6448AC33-13 input signal timing (1) input signal specifications parameter symbol min. typ. max. unit remarks clk frequency 1/t c 21.0 25.175 29.0 mhz 39.722 ns (typ.) duty tch/t c 0.4 0.5 0.6 C C rise, fall tcrf C C 10 ns C hsync period th 30.0 31.778 33.6 m s 31.469 khz (typ.) C 800 C clk display period thd 640 clk C front-porch thf C 16 C clk fixed timing mode 2 16 C clk de mode pulse width thp * 10 96 140 clk fixed timing mode 10 96 C clk de mode back-porch thb * 4 48 134 clk fixed timing mode 4 48 C clk de mode thp + thb * 144 clk fixed timing mode 14 144 C clk de mode clk-hsync timing thch 12 C C ns C hsync-clk timing thcs 8 C C ns C hsync-vsync timing tvh 1 C C clk 1clk = 39.722 ns (typ.) vsync-hsync timing tvs 30 C C ns C rise, fall thrf C C 10 ns C vsync period tv 16.1 16.683 17.2 ms 59.94 hz (typ.) C 525 C h display period tvd 480 h C front-porch tvf C 12 C h fixed timing mode 1 12 C h de mode pulse width tvp * 1 2 29 h fixed timing mode 1 2 C h de mode back-porch tvb * 4 31 32 h fixed timing mode 4 31 C h de mode tvp + tvb * 33 h fixed timing mode 5 33 C h de mode rise, fall C C 10 ns C clk-data timing tds 8 C C ns C data-clk timing tdh 12 C C ns C rise, fall tdrf C C 10 ns C de de-clk timing tes 8 C C ns de mode clk-de timing teh 12 C C ns rise, fall terf C C 10 ns all of parameters should be kept in the specified range. data r0 - r5 g0 - g5 b0 - b5
NL6448AC33-13 8 (2) definition of input signal timing tvp tv vsync display period note tvb tvf tvd de thp th hsync display period thb thf thd de note note these do not exist as signals.
9 NL6448AC33-13 t c tch clk hsync tvhs tvhh 0.5 v cc 0.7 v cc 0.5 v cc 0.3 v cc tvrf vsync clk thcs thch 0.5 v cc 0.7 v cc 0.5 v cc 0.3 v cc thrf hsync 0.7 v cc 0.5 v cc 0.3 v cc terf de (r0 - r5) 0.7 v cc (g0 - g5) 0.5 v cc data tdrf tdrf tdh tds invalid (b0 - b5) 0.3 v cc terf tes teh tes teh invalid 0.7 v cc 0.5 v cc 0.3 v cc tcrf
NL6448AC33-13 10 (3) input signal timing chart a) fixed timing mode 1 2 145 144 (note: y = 0 to 479) 784 785 800 1 clk hsync 10clk (min.) 144clk (fixed) 1clk 640clk (fixed) 16clk invalid invalid d (0, y) d (1, y) d (638, y) d (639, y) hsync invalid r0 - r5 g0 - g5 b0 - b5 34 35 513 514 515 513 514 34 3 2 1 33h (fixed) hsync vsync 1h (min.) 1h 480h (fixed) 12h hsync d (x, 0) d (x, y) d (x, 478) d (x, 479) invalid (note: x = 0 to 639) invalid d (x, y) d (639, y) invalid 1h (min.) r0 - r5 g0 - g5 b0 - b5 r0 - r5 g0 - g5 b0 - b5 4clk (min.) d (0, y) d (1, y) 33
11 NL6448AC33-13 b) de mode 1 2 (note: y = 0 to 479) 1 clk hsync thb 1clk 640clk (fixed) thf invalid invalid d (0, y) d (1, y) d (638, y) d (639, y) invalid r0 - r5 g0 - g5 b0 - b5 3 2 1 tvb hsync vsync 1h 480h (fixed) 1 de d (x, 0) d (x, y) d (x, 479) invalid (note: x = 0 to 639) invalid d (0, y) d (1, y) d (x, y) d (639, y) invalid r0 - r5 g0 - g5 b0 - b5 r0 - r5 g0 - g5 b0 - b5 thp de de tvp tvf 144 145 784 785 800
NL6448AC33-13 12 (4) display position of input data d (0, 0) d (1, 0) - - - d (x, 0) - - - d (638, 0) d (639, 0) d (0, 1) d (1, 1) - - - d (x, 1) - - - d (638, 1) d (639, 1) --- --- d (0, y) d (1, y) - - - d (x, y) - - - d (638, y) d (639, y) --- --- d (0, 478) d (1, 478) - - - d (x, 478) - - - d (638, 478) d (639, 478) d (0, 479) d (1, 479) - - - d (x, 479) - - - d (638, 479) d (639, 479) --- --- --- --- --- --- --- --- --- --- --- --- --- ---
13 NL6448AC33-13 general caution (1) caution when taking out the module 1) pick the pouch only, when taking out module from a shipping package. (2) cautions for handling the module 1) as the electrostatic discharges may break the lcd module, handle the lcd module with care. peel a protection sheet off from the lcd panel surface as slowly as possible. 2) as the lcd panel and back-light 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 cilk, hsync or vsync signals. 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. (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 humidity atmosphere. storage in an electro-conductive polymer packing pouch and under relatively low temperature atmosphere is recommended. (5) cautions 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 re-assemble lcd module. 2) do not re-adjust 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 the original shipping packages. 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.
NL6448AC33-13 14 outline drawing: front view (unit in mm) 8 (max) 2.5 + 0.3 ? 2.4 + 0.3 ? (2.8) (4) (7.5) (78.3) 166.6 + 0.3 ? 179 + 0.5 ? (4) (2.8) (3.2) (4) 2-r4 (120.1) 234 + 0.3 ? 243 + 0.5 ? (1.8) (215.4) (bezel opening) (211.2) (active area) (0.5) 2-r2.9 (2.9) (5.8) 57 + 10 ? (4) 132.6 + 0.3 ? (123.6) (114.4) (1.7) (5.4) (5.3) 3.5 + 0.1 ? 2.1 ?0 + 0.1 7 0.1 + (7.5) (3.1) (2.9) 2-r1.05 + 0.1 ?0 4-r1.75 + 0.1 ? mounting hole f 2 ? 3.5 + 0.1 ? + 0.1 ?0 f 2.1 active area center module center (158.4) (active area) (161.8) (bezel opening)
15 NL6448AC33-13 outline drawing: rear view (unit in mm) (6.4) (1.7) (16.4) (32) (23.6) (8.4) (5.6) (7.9) (4.4) (6.1) (4.4) (6.6) (4.4) see view b (3.2) (0.4) (4.8) (7.9) (5.5) (5.5) (2.5) (6.2) (30.5) (28.5) (6.2) see view c (3.8) (4.4) view c (scale 2/1) (0.4) view b (scale 2/1) caution high voltage 2 0 4 2 6 7 a 0 0 0 2 k nl 6448ac33-13 es2228421 a100100100100 made in japan the tft color lcd panel contains cold cathode flourescent lamps. please follow local ordinances or regulations for its. di sposal 104blm-10
NL6448AC33-13 16 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 of others.

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