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nec corporation dod-m-0362 1 / 27 tft color lcd module NL12876BC26-21 39cm (15.3 type) wxga lvds interface (1port) data sheet 1st edition all information in this document is subject to change without prior notice. 1st engineering department color lcd division display device operations unit nec electron devices nec corporation approved may 14, 2001 checked prepared may 14, 2001
nec corporation dod-m-0362 2 / 27 introduction no part of this specifications 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 specifications. if customers intend to use this product for applications other than those specified for "standard" quality grade, they should contact an nec corporation sales representative in advance. anti-radioactive design is not implemented in this product.
nec corporation dod-m-0362 3 / 27 contents 1. outline ..................................................................................................................... .................... 4 2. features.................................................................................................................... ................... 4 3. application................................................................................................................. ................ 4 4. principle and structure .................................................................................................... 4 5. outline of characteristics (at room temperature) ....................................................... 5 6. block diagram ............................................................................................................... ........... 6 7. general specifications...................................................................................................... .7 8. absolute maximum ratings ............................................................................................... 7 9. electrical characteristics ............................................................................................. 7 10. supply voltage sequence ................................................................................................ 9 11. interface pin connections ........................................................................................... 10 12. how to connect with lvds transmitter................................................................... 12 13. display colors vs. input data signals ..................................................................... 14 14. input signal timings ....................................................................................................... .. 15 15. optical characteristics................................................................................................. 18 16. reliability test........................................................................................................... ......... 21 17. precautions ................................................................................................................ ........... 22 17.1 meaning of caution signs ........................................................................................... 22 17.2 cautions ............................................................................................................................ 22 17.3 attentions ........................................................................................................................ 22 18. outline drawings (unit: mm) ........................................................................................... 25 18.1. front view ....................................................................................................................... 25 18.2 rear view .......................................................................................................................... 26
nec corporation dod-m-0362 4 / 27 1. outline NL12876BC26-21 is a tft (thin film transistor) active matrix color liquid crystal display (lcd) comprising amorphous silicon tft attached to each signal electrode, a driving circuit and a backlight. this product has a 39cm (15.3 inches) display area by a diagonal, and contains 1280 768 pixels in it. also it can display 16,194,277 colors. 2. features ? lvds interface (adapted thc63lvd824,thine electronics, inc. as a receiver) ? high luminance ? wide viewing angle (with retardation film) ? low reflection ? high contrast ratio ? wide color gamut ? incorporated edge type backlight ? replaceable lamp holders ? approved by ul1950 third edition (file no. e170632) and csa-c22.2 no. 950-95 (file no. e170632) 3. application multimedia monitor 4. principle and structure a color tft (thin film transistor) lcd module is composed of a tft liquid crystal panel structure, lsis for driving the tft array, and a backlight assembly. the tft liquid crystal panel structure is injected liquid crystal material into the narrow gap between a tft array glass substrate and a color filter glass substrate. also, lcd module is connected the driver lsis with a tft liquid crystal panel structure, and then the backlight assembly is attached to the backside of the panel. rgb (red, green, blue) data signals from a source system are modulated into a form suitable for active matrix addressing by the onboard signal processor and sent to the driver lsis which in turn addresses the individual tft cells. working as an electro-optical switch, each tft cell regulates transmitted light from the backlight assembly when worked by the data source. color images are created by regulating the amount of transmitted light through the array of red, green, and blue dots.
nec corporation dod-m-0362 5 / 27 5. outline of characteristics (at room temperature) display area 334.08 (h) 200.448 (v) mm drive system a-si tft active matrix display colors 16,194,277 colors number of pixels 1280 (h) 768 (v) pixel arrangement rgb vertical stripe pixel pitch 0.261 (h) 0.261 (v) mm module size 369.0 (typ., h) 226.0 (typ., v) 20.0 (max., d) mm weight 1450 g (typ. ) contrast ratio 300:1 (typ., viewing angle is x = 0 , y = 0 ) viewing angle (to be out of 10:1 for the contrast ratio) -horizontal: 60 (typ., left side, right side) -vertical: 40 (typ., up side), 60 (typ., down side) designed viewing direction: optimum grayscale ( =2.2): perpendicular polarizer pencil-hardness y 3h (min., at jis k5400) color gamut 56 % (typ., at center, to ntsc) response time 11ms (typ.) luminance 500 cd/m 2 (typ., at il= 6ma / lamp) signal system lvds interface (receiver: thc63lvd824, thine electronics, inc.) rgb 8-bit signals, dot clock (clk), and data enable signal (de). supply voltage 5 v (logic, lcd driving) backlight edge light type: y four cold cathode fluorescent lamps in two holders, inverter-less [replaceable parts] -lamp holder: 153lhs01 power consumption 21.3w (typ., checkered flag pattern, at il= 6ma / lamp)
nec corporation dod-m-0362 6 / 27 6. block diagram note1: thc63lvd824 core (thine) note2: gnd is signal ground for logic and lcd driving. gnd is not connected to fg (frame ground) in the lcd module. these grounds should be connected to system ground in customer equipment. d0+/- d1+/- d2+/- d3+/- ck+/- vcc gnd fg i/f lcd module controller dc/dc converter power supply for drivers v - driver h - driver 3840 lines tft lcd panel 768lines h: 1280 3 (r,g,b) v: 768 backlight (edge light type) lvds chip note1 vl high1 vl high2 vl high3 vl high4 vl low2 vl low1
nec corporation dod-m-0362 7 / 27 7. general specifications item specification unit module size 369.0 ? 1.0 (h) 226.0 ? 1.0 (v) 20.0(max., d) yyyyyyy note1 mm display area 334.08 (h) 200.448 (v) [diagonal display size: 39cm (type 15.3)] mm number of pixels 1280 (h) 768 (v) pixel dot pitch 0.087 (h) 0.261 (v) mm pixel pitch 0.261 (h) 0.261 (v) mm pixel arrangement rgb (red, green, blue) vertical stripe display colors 16,194,277 color weight 1450 (typ.), 1600 (max.) g note1: exclude the bulge by wrinkles or bending of a transparency sheet 8. absolute maximum ratings parameter symbol rating unit remarks supply voltage vcc -0.3 to +6.0 v ta = 25 c logic input voltage vi -0.3 to vcc+0.3 v ta = 25 c lamp voltage vl 2000 vrms ta = 25 c storage temperature tst -20 to +60 c operating temperature top 0 to +50 c module surface note1 95 % ta 40 c relative humidity (rh) note 2 85 % 40 c ? ta 50 c absolute humidity note 2 78 note3 g/m 3 ta ? 55 c note1: measure at the surface of panel (including self-heat) note2: no condensation note3: ta = 55 c, rh = 70%. 9. electrical characteristics (1) logic, lcd driving (ta 1 25 c) parameter symbol min. typ. max. unit remarks supply voltage vcc 4.75 5.0 5.25 v - ripple voltage vrp - - 100 mv for vcc differential input (h) threshold voltage vth - - +100 mv differential input (l) threshold voltage vtl -100 - - mv vcm=1.2v note1 differential input voltage vi 0 - 2.4 v - terminating resistor rt - 100 ? - supply current icc - 250 note2 800 note3 ma vcc= 5.0v note1: common mode voltage in lvds driver note2: checkered flag pattern (in eiaj ed-2522) note3: theoretical maximum current pattern
nec corporation dod-m-0362 8 / 27 (2) backlight (ta = 25 c) parameter symbol min. typ. max. unit remarks lamp current il 3.0 6.0 6.5 marms for each lamp, il=6.0marms: 500cd/m 2 , note1 lamp voltage vl 700 vrms - 950 vrms ta = 25 c, note1 lamp turn on voltage vs 1500 vrms ta = 0 c, note1 oscillator frequency ft 50 60 khz note2 note1: when il and/or vs are lower than min. value, lamps will not turn on. note2: recommended value of 'ft' 1) 'ft' should be within the specification. and 2) ft = 1/ 4th (2n-1) th: hsync period n: a natural number (1,2,3 ? ) if ft is not the recommended value, beat noise may display on the screen, because of interference between ft frequency and hsync frequency. note3: the lamp current should be measured by high-frequency current meter at the low voltage terminal. two lamps contain in the one lamp holder, and both lamps are connected to one low voltage cable. therefore, the lamp current at low voltage terminal is sum of two lamps (12ma typ.) note4: the inverter power supply has a big influence on lighting-up characteristics and the lifetime of the lamp. when design the inverter power supply, evaluate it sufficiently.
nec corporation dod-m-0362 9 / 27 10. supply voltage sequence *signals: de, clk, r0 to r7, g0 to g7, b0 to b7 note1: the values of signals are at terminal of resistor 100 ? . note2: when vcc is not supplied, logic signals (synchronous signals and control signals) should be "0" voltage (v). if these input voltages are higher than 0.3 v, the internal circuit will be damaged. note3: when turn on the lcd module, if vcc voltage has the chance of fall-down during the rising period up to 4.75v, the lcd module may not start to work because of the protection circuit. note4: turn on/off the backlight during vcc and signals are supplied to lcd module. when turns on/off backlight during lcd module is not working, the display may momentarily become white. note5: when the vcc is not supplied to lcd module, please keep all signals low level or high impedance. note6.this product has the fuse shown below list. type name producer rating vcc kmc20 daito 20v/2a the power capacity should be more than 2 times of fuse ratings from safety point of view. if the power capacity of customer system is less than above request, check and evaluate it carefully. valid p erio d t>200 m s 0.5v 10 nec corporation dod-m-0362 10 / 27 11. interface pin connections (1) interface connector for signals and power cn1 socket part no.: fi-seb20p-hf adaptable plug: fi-se20m supplier: japan aviation electronics industry limited (jae) pin no. symbol signal type function 1 vcc 2 vcc +5.0v power supply +5.0v 5% 3 gnd 4 gnd ground note1 5 d0- 6 d0+ pixel data lvds differential signal 7 gnd ground note1 8 d1- 9 d1+ pixel data lvds differential signal 10 gnd ground note1 11 d2- 12 d2+ pixel data lvds differential signal 13 gnd ground note1 14 ck- 15 ck+ pixel clock lvds differential signal clk for pixel data f=81mhz (typ.) 16 gnd ground note1 17 d3- 18 d3+ pixel data lvds differential signal 19 gnd 20 gnd ground note1 note1: gnd is signal ground for logic and lcd driving. gnd is not connected to fg (frame ground) in the lcd module and these grounds should be connected to system ground in customer equipment. note2: use 100 ? twist pair wires for the cable. cn1 socket 1 20 insert direction cn1 socket: figure from socket view 1,2 . . . . . . . . . . . . . . . . . 19,20
nec corporation dod-m-0362 11 / 27 (2) connector for backlight unit cn201 plug part no.: bhr-04vs-1 adaptable socket: sm03(7-d1)b-bhs-tb supplier: j.s.t. trading company, ltd. pin no. symbol function 1vl high1 upper side lamp, high voltage terminal (the cable color is pink) 2vl high2 upper side lamp, high voltage terminal (the cable color is pink) 3 n.c. non-connection, keep the terminal open. 4vl low1 upper side lamp, low voltage terminal (the cable color is gray) cn202 plug part no.: bhr-04vs-1 adaptable socket: sm03(7-d1)b-bhs-tb supplier: j.s.t. trading company, ltd. pin no. symbol function 1vl high3 lower side lamp, high voltage terminal (the cable color is pink) 2vl high4 lower side lamp, high voltage terminal (the cable color is pink) 3 n.c. non-connection, keep the terminal open. 4vl low2 lower side lamp, low voltage terminal (the cable color is gray) attention: vl high and vl low must be connected correctly. if customer connects wrongly, customer will be hurt and the module will be broken. insert direction cn1 socket 1 20 cn201 plug cn202 p lug 4 4 1 1
nec corporation dod-m-0362 12 / 27 yyy 12. how to connect with lvds transmitter (1) 8bit input cn1 pin transmitter 1vcc receiver lcd control signals input pin thc63lvdm83a-85 pin 2 vcc thc63lvd824 r2 51 ta0 3 gnd ra0 r2 r3 52 ta1 4 gnd ra1 r3 r4 54 ta2 ta- 48 5d0- ra- ra2 r4 r5 55 ta3 ta+ 47 6d0+ ra+ ra3 r5 r6 56 ta4 7 gnd ra4 r6 r7 3ta5 tb- 46 8d1- rb- ra5 r7 g2 4ta6 tb+ 45 9d1+ rb+ ra6 g2 g3 6tb0 10gnd rb0 g3 g4 7tb1 tc- 42 11 d2- rc- rb1 g4 g5 11 tb2 tc+ 41 12 d2+ rc+ rb2 g5 g6 12 tb3 13 gnd rb3 g6 g7 14 tb4 tclk- 40 14 ck- rclk- rb4 g7 b2 15 tb5 tclk+ 39 15 ck+ rclk+ rb5 b2 b3 19 tb6 16 gnd rb6 b3 b4 20 tc0 td- 38 17 d3- rd- rc0 b4 b5 22 tc1 td+ 37 18 d3+ rd+ rc1 b5 b6 23 tc2 19 gnd rc2 b6 b7 24 tc3 20 gnd rc3 b7 gnd note2 27 tc4 rc4 n.c. gnd note2 28 tc5 rc5 n.c. de 30 tc6 rc6 de r0 50 td0 rd0 r0 r1 2td1 rd1 r1 g0 8td2 rd2 g0 g1 10 td3 rd3 g1 b0 16 td4 rd4 b0 b1 18 td5 rd5 b1 gnd 25 td6 rd6 n.c. pixel data and control signals clk 31 clkin clkout clk note1: use 100
twist pair wires for the cable. note2: tc4 and tc5 of lvds transmitter input signals are not used at lcd controler. note3: these signals should be kept the specification of 14.input signal timings . evaluate the clock jitter sufficiently, because the timing margins of lvds signals are severe. i/f lcd module
nec corporation dod-m-0362 13 / 27 (2) 6bit input cn1 pin transmitter 1vcc receiver lcd control signals input pin thc63lvdm83a-85 pin 2 vcc thc63lvd824 r2 44 ta0 3 gnd ra0 r2 r3 45 ta1 4 gnd ra1 r3 r4 47 ta2 ta- 41 5d0- ra- ra2 r4 r5 48 ta3 ta+ 40 6d0+ ra+ ra3 r5 r6 1ta4 7gnd ra4 r6 r7 3ta5 tb- 39 8d1- rb- ra5 r7 g2 4ta6 tb+ 38 9d1+ rb+ ra6 g2 g3 6tb0 10gnd rb0 g3 g4 7tb1 tc- 35 11 d2- rc- rb1 g4 g5 9tb2 tc+ 34 12 d2+ rc+ rb2 g5 g6 10 tb3 13 gnd rb3 g6 g7 12 tb4 tclk- 33 14 ck- rclk- rb4 g7 b2 13 tb5 tclk+ 32 15 ck+ rclk+ rb5 b2 b3 15 tb6 16 gnd rb6 b3 b4 16 tc0 17 d3- rd- rc0 b4 b5 18 tc1 lvdsgnd 42,37,36 18 d3+ rd+ rc1 b5 b6 19 tc2 note1 19 gnd rc2 b6 b7 20 tc3 20 gnd rc3 b7 gnd note2 22 tc4 rc4 n.c. gnd note2 23 tc5 rc5 n.c. de 25 tc6 rc6 de clk 31 clkin rd0 gnd r0 n.c. rd1 gnd r1 n.c. rd2 gnd g0 n.c. rd3 gnd g1 n.c. rd4 gnd b0 n.c. rd5 gnd pixel data and control signals b1 n.c. rd6 n.c. clkout clk note1: connect pin no.17(d3-) and 18(d3+) of cn1 to lvdsgnd. note2: lvds transmitter input signals tc4 and tc5 are not connected to lcd control signals input. note3: use 100 ? twist pair wires for the cable note4: these signals should be kept the specification of 14.input signal timings . evaluate the clock jitter sufficiently, because the timing margins of lvds signals are severe. i/f lcd module
nec corporation dod-m-0362 14 / 27 13. display colors vs. input data signals data signal (0: low level, 1: high level) y display colors r7 r6 r5 r4 r3 r2 r1 r0 g7 g6 g5 g4 g3 g2 g1 g0 b7 b6 b5 b4 b3 b2 b1 b0 black 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 blue 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 red 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 magenta 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 green 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 cyan 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 yellow 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 basic y colors white 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ::: ::: 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 red y grayscale black dark bright red 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 ::: ::: 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 green y grayscale black dark bright green 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 ::: ::: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 blue y grayscale black dark bright blue 1 1 1 1 1 1 1 1 note1: the combination of 8-bit signals (253 steps in grayscale) results in equivalent to 16,194,277 (253 253 253) colors. the display data of (11111101), (11111110) and (11111111) become same grayscale.
nec corporation dod-m-0362 15 / 27 14. input signal timings (1) input signal specifications for lcd controller parameter symbol min. typ. max. unit remarks 78.0 81.0 84.0 mhz frequency 1/tc - 12.34 - ns lvds driver input duty tch/tc - clk period between rise and fall tcrf ns setup timing tds ns clk-data hold timing tdh ns data period between rise and fall tdrf note2 ns - - 20.840 - s cycle period tehc note3 1408 1688 - clk 47.99khz(typ.) horizontal display period tehd 1280 clk - - 16.797 - ms cycle period tevc 771 806 - h 59.54khz(typ.) vertical (one frame) display period tevd 768 h - setup timing tes ns clk-de timing hold timing teh ns de period between rise and fall terf note2 ns note1: definition of units is as follows. tc = 1clk, tehc = 1h note2: timing specifications are defined by the input signals of lvds transmitter. thc63lvdm83a-85 (thine) or equivalent products are recommended for lvds transmitter. note3: during operation, fluctuation of horizontal cycle period ?tehc? must not exceed 1 clk. otherwise function errors will occur in lcd module. e.g.: acceptable fluctuation range is 1599-1601 clk, when the horizontal cycle period ?tehc? is 1600 clk.
nec corporation dod-m-0362 16 / 27 (2)input signal timing chart ? outline chart note1: x is data number from 1 to 767. ? detail of a part *vih, vil: refer to lvds transmitter specifications. de vih center o f amplitude vil clk vih vil data (r0 to r7) (g0 to g7) (b0 to b7) tes teh tdrf tdrf tds tdh tcrf tcr f tch tc 1279 d (0, 0) d (1279, 0) 767 1 d (x, 0) tehd tevd a x+1 tes terf terf note1 1 2 d (x, 2) d (0, 2) d (1279, 2) 1688 (typ.) teh 1280 d (x, 767) d (0, 767) d (1279, 767) vih center o f amplitude vil tevc tehc note1 vih center o f amplitude vil clk tds tdh tdrf tdrf tc tcrf terf vih vil data (r0 to r7) (g0 to g7) (b0 to b7) de tch tcrf teh tes terf teh tes vih vil d (0, 0) d (x, 0) d (1279, 0) 1 x+1 1279 1280
nec corporation dod-m-0362 17 / 27 (3) display position of input data d(0,0) d(1,0) d(2,0) d(1279,0) d(0,1) d(1,1) d(2,1) d(1279,1) d(0,2) d(1,2) d(2,2) d(1279,2) d(0,767) d(1,767) d(2,767) d(1279,767)
nec corporation dod-m-0362 18 / 27 15. optical characteristics (ta = 25 c, note1) parameter symbol condition min. typ. max. unit remarks note4 200 300 - - note3 contrast ratio cr best contrast angle at center - 450 - - note3 luminance lumax white, note4 400 500 - cd/m 2 note2 luminance uniformity - max. / min. - 1.2 1.3 - note7 color gamut c to ntsc 50 56 - % note4 w white (x, y) - 0.309, 0.320 - - r red (x, y) - 0.632, 0.337 - - g green (x, y) - 0.319, 0.553 - - chromaticity coordinates b blue (x, y) - 0.142, 0.090 - - - x+ 50 60 - deg. horizontal x- cr>10, y = 0 50 60 - deg. y+ 30 40 - deg. viewing angle range (cr>10) vertical y- cr>10, x = 0 35 60 - deg. x+ - 80 - deg. horizontal x- cr>5, y = 0 - 80 - deg. y+ - 60 - deg. viewing angle range (cr>5) vertical y- cr>5, x = 0 - 65 - deg. note5 100% 10% -1220 ton white to black 90% 10% -11- 0% 90% -2530 response time (module surface temperature = 30 c) toff black to white 10% 90% -21- ms note6 note1: vcc = 5v, il= 6.0marms note2: optical characteristics at 60hz are measured after 20minutes from working the product, in the dark room. all parameters are measured after luminance saturation. (this part continues to the next page) photo-detector: bm-5a (topcon) 50cm 1 ? lcd module
nec corporation dod-m-0362 19 / 27 (this part continues to the front page.) note3: the contrast ratio is calculated by using the following formula. luminance with all pixels in "white" contrast ratio (cr) = luminance with all pixels in "black" note4: viewing angle is x = 0 , y = 0 , at center. note5: definitions of viewing angle are as follows note6: definitions of response time are as follows. response time is measured, the luminance changes "white" to "black" or ?black? to ?white? by photo-detector's output level. definition of response times are the period between 90% and 10% (that is ton), and one between 10% and 90% (that is toff), of the output level. (this part continues to the next page) white luminance black 100% 10% ton toff 90% 0% left up down n ormal axis (perpendicular) y+ y- x+ x- 12 o?clock right
nec corporation dod-m-0362 20 / 27 (this part continues to the front page.) note7: luminance uniformity is calculated by using the following formula. maximum luminance luminance uniformity = minimum luminance the luminance is measured at near the five points shown below. ? ? ? (213) (640) (1067) (128) (384) (640) ? ?
nec corporation dod-m-0362 21 / 27 16. reliability test test item test condition judgment high temperature/humidity operation 50 ? 2 ? , rh= 85% 240 hours, display data is black. note1 heat cycle (operation) ? 0 c 3 c --- 1 hour 55 c 3 c --- 1 hour ? 50 cycles , 4 hours/cycle ? display data is black. note1 thermal shock (non-operation) ? - 20 c 3 c --- 30 minutes 60 c 3 c --- 30 minutes ? 100 cycles ? temperature transition time is less than 5 minutes. note1 vibration (non-operation) ? 5-100hz, 19.6m/s 2 1 minute/cycle, x,y,z direction ? 50 times each direction note1, 2 mechanical shock (non-operation) ? 294m/s 2 , 11ms x,y,z direction ? 3 times each direction note1, 2 esd (operation) 150pf, 150 ? , 10kv 9 places on a panel 10 times each place at one-second intervals note1,3 dust (operation) 15 kinds of dust (jis-z 8901) hourly 15 seconds stir, 8 times repeat note1 y note1: no display malfunctions (display functions are checked under the same condition as out-going inspection.) note2: no physical damages note3: discharge points are shown in the figure.
nec corporation dod-m-0362 22 / 27 17. precautions 17.1 meaning of caution signs the following caution signs have very important meaning. be sure to understand following contents! ! caution this sign has a meaning that customer will be injured by himself, or the product will sustain a damage, if customer makes a mistake in operations. this sign has a meaning that customer will get an electric shock, if customer makes a mistake in operations. this sign has a meaning that customer will be injured by himself, if customer makes a mistake in operations. 17.2 cautions do not touch high voltage part of the lamp cables while turn on. customer will be in danger of an electric shock. ? ? ? ? pay attention to handling for the working backlight. it may be over 35 c from ambient temperature. ? ? ? ? do not shock and press the lcd panel and the backlight. there will be in danger of breaking, because there are made of glass. (shock: to be not greater 294m/s 2 and to be not greater than 11ms, pressure: to be not greater 19.6n) 17.3 attentions (1) handling the product when customer pulls out products from carton box, take hold of both ends without touch the circuit board. if you touch it, products may be broken down and/or out of adjustment, because of stress to mounting parts. if customer places products temporarily, turn down the display side and place on a flat table. handle products with care and avoid electrostatic discharge (e.g. decrease with earth band, ionic shower, etc.), because electrostatic may be damaged products (lcd modules). the torque for mounting screws should never exceed 0.39n ? m. over torque may cause mechanical damage to the product. do not press or friction, because lcd panel surface is sensitive. if customers will clean the product surface, nec corporation or their supplier will recommend using the cloth with ethanolic liquid.
nec corporation dod-m-0362 23 / 27 do not push-pull the interface connectors while turn on, because wrong power sequence may break down the product. connection cables such as flexible cable, and so on, are danger of damage. do not hook cables nor pull them. (2) environment dewdrop atmosphere must be avoided. do not operate and/or store in high temperature and/or high humidity atmosphere. if customer store the product, keep in antistatic pouch in room temperature, because of avoidance for dusts and sunlight. do not operate in high magnetic field. circuit boards may be broken down by it. use an original protection sheet on product surface (polarizer). adhesive type protection sheet should be avoided, because it may change color and/or properties of the polarizer. (3) specification for products do not display the fixed pattern for a long time because it may cause image sticking. if the screen is displayed the fixed pattern, use a screen saver. the product may be changed of color by viewing angle. luminance may have change by voltage variation, even if power source applies recommended voltage to backlight inverter. optical characteristics may be changed by input signal timings. (4) installation of an inverter insert an insulation sheet between the inverter and the chassis, when the inverter is installed on the chassis. if customer does not insert the insulation sheet, electric discharge may occur from the inverter to the module. recommended insulation sheet: ? thickness of the insulation sheet:t 0.4mm ? material: polyethylene terephtalate (ul class : 94v-0)
nec corporation dod-m-0362 24 / 27 (5) other all gnd and vcc terminals should be connected without a non-connected signal line. do not disassemble a product and/or adjust volume. if customer would like to replace backlight lamps, see 'replacement manual for backlight'. if customer uses screwnails, pay attention not to insert waste materials in inside of products. when customer returns product for repair and so on, pack it with original shipping package because of avoidance of some damages during transportation. not only the product but also the equipment that used the product should be packed and transported as the product becomes vertical. otherwise, there is the fear that a display dignity decreases by an impact or vibrations. to avoid contact between the lamp cable and the chassis, insert an insulation sheet between the lamp cable and the chassis or use a cable clamp, when the lamp cable is assembled to the chassis. otherwise, leak current may occur from the lamp cables to the chassis (frame ground (fg)), and the luminance may be decrease. fluctuation of lamp current, which is caused by lamp ambient temperature, luminance control, supply voltage and method of lamp cable installation, may invite malfunctions of the inverter protection circuit. when design the inverter protection circuit, evaluate the lamp current sufficiently. general specifications for the lcd the following items are neither defects nor failures. ? ? ? ? response time, luminance and color gamut may be changed by ambient temperature. ? ? ? ? the lcd may be seemed luminance uniformity, flicker, vertical seam and/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.
nec corporation 25/27 dod-m-0362 18. outline drawings (unit: mm) 18.1. front view ? ? ? ? ?? ? ??t ? ? ?t? t? ?? ?? ?? ?y? ?? ?? ?? ??t ?? t ?? ?? ?? ?? ?? t? ?? ?y? ?? ?? ?? ??? ?y? ?? ? ? ?t?? y? y? ?t?? ?? ?? ? ? ? ? ?? ? ?? ?? ?t ? ????
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nec corporation 26/27 dod-m-0362 18.2 rear view n ote1: the torque for mounting screws should never exceed 0.392nm. n ote2: tolerances of dimensions not shown are 0.5mm. ?? t? ?? ?? ? ?? ?? ?? y? ? ??t y? t? ??? ?? ?? ? t??t ?? ?y? 0./; .<0+, (;,90(3 5-694(;065
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? ? ?y y? ? ? y? model: NL12876BC26-21 serial: ********* panel : ************* 01. 5. 14/ e170632 made in japan
nec c orporation 27 /27 dod-m- 0362 ?@?@?@?@?@?@?@?@?@?@ rev. prepared date revision contents 1 may 14, 2001 dod-m-0362 preliminary specifications ? data sheet the inside of this document is revised the clerical error and unclear expression in previous one. the important changes such as specifications , characteristics and functions are as follows. p4 features: add ul approval. p5 polarizer pencil-hardness: 2h ? 3h p5, p7 weight: 1250g typ., 1500g max. ? 1450g typ., 1600g max. p7 absolute humidity: expression of rating is revised. p8 backlight: add note3. p10 connector for backlight unit : cn201 socket ? cn201 plug cn202 socket ? cn202 plug p12, p13 how to connect with lvds transmitter is changed. p15, p16 expression of input signal timings are revised. p17 expression of optical characteristics is revised. p23, p24 precautions: add (4) ? , (5) 2 ,and (5) 3 . p25, p26 outline drawings are revised. approved by checked by prepared by revision history

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