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LQ6NC01/lq6nc02 lcd data sheet tft-lcd module features tft-active matrix-lcd drive system 240 (v) 720 (h) (total 172,800) dots (delta configuration) slim, lightweight and compact: active area/outline area: 57% thickness: 23 mm weight: 320 g built-in video interface circuit (including chroma demodulator, picture tone, video acg circuit) and control circuit responsive to composite video signal also responsive to standard analog rgb video signals further rgb signals can be superimposed on composite video signal (in this case, rgb signals shall be digital input signal for eight colors display) high-quality, full-color rendition with backlight source incorporated viewing angle: 6 oclock direction: LQ6NC01 12 o?lock direction: lq6nc02 description the sharp LQ6NC01/lq6nc02 color tft-lcd module is an active matrix lcd (liquid crystal dis- play) produced by making the most of sh arps exper- tise in liquid-crystal and semiconductor technologies. the active device is amorphous silicon tft (thin film transi stor). the module accepts full -color video sig- nals (composite video and analog rgb) conforming to the ntsc (m) system standard. when additionally provided with the backlight-driv- ing dc/ac inverter, it is applicable to pocket tvs and various display monitors. the module consists of a tft-lcd panel, driver ics, control pwb mounted with electronic circuits, flourescent tube, reflector, fra me, front and rear shielding cases. note: backlight-driving dc/ac inverter is not built into the module. lcd data sheet page 1
b g r b b g r b g r b g common transparent electrode source (video signal) line (upper) rgb white light source (fluorescent tube) glass substrate (color filter side) common transparent electrode alignment layer video signal gate (scanning signal) line tft source (video signal) line (lower) glass substrate (tft side) glass substrate (color filter side) black mask polarizing filter ii alignment layer liquid crystal molecule pixel electrode polarizing filter i color filter r g b passivation film glass substrate (tft side) spacer spacer spacer spacer tft 5703-6 figure 1. LQ6NC01/lq6nc02 tft-lcd panel lq6nc 01/lq6nc02 tft-lcd module page 2 lcd data sheet
5703-7 front case gate driver frame source driver control pwb shielding case reflector fluorescent tube holding pwb fluorescent tube tft-lcd panel figure 2. LQ6NC01/lq6nc02 tft-lcd module construction tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 3
lcd driving video signal gate driver driving signal tft-lcd panel backlight backlight driving circuit (optional) video interface ic control circuit gate driver power supply circuit vsw vsy hsy vbs composite video signal rgb video signal (analog/digital) brt cnt col tin v cdc gnd power supply v sh , v sl gate driver power supply source driver (upper) source driver (lower) source driver driving signal common electrode driving signal (v com ) gate driver 5703-9 backlight driving signal v sl note: * = not included in the module. frp hsy vsw syn * video interface circuit figure 3. LQ6NC01/lq6nc02 tft-lcd module block diagram lq6nc 01/lq6nc02 tft-lcd module page 4 lcd data sheet
mechanical specifica tions parameter specifications unit note display format 720 (w) 240 (h) dots active area 113.8 (w) 87.6 (h) mm screen size 5.7 (diagonal) inch dot pitch 0.158 (w) 0.365 (h) mm dot configuration rgb delta configuration outline dimension 149.4 (w) 117 (h) 23 (d) mm 1 weight 320 10 g note: 1. excludes protrusions. absolute maximum ratings (gnd = 0 v, t a = 25 c) symbol parameter min. max. unit note v sh positive power supply voltage ?.3 +6.0 v v sl negative power supply voltage ?.0 +0.3 v vi 1 video input signal 1 ?.0v p-p 1 vi 2 video input signal 2 ? sh ?.3 v p-p 2 v i digital input/output signals ?.3 v sh +0.3 v 3 v cdc dc bias voltage of common electrode driving signal v sl 0.3 1.5 v v pic picture adjusting terminal voltage ?.3 v sh ?.3 v 4 t stg storage temperature ?5 60 degrees 5 t opp operating temperature ?panel 060degrees t opa operating temperature ?ambient 040degrees notes: 1. vbs terminal (composite video signal). 2. vri, vgi, vbi, terminals (rgb signals). 3. hsy, vsy, vsw terminals. 4. brt, cnt, col, tin terminals. 5. maximum wet-bulb temperature 38 c or less. no dew condensation. tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 5
input/output terminals tft-lcd panel driving section pin number symbol i/o description note 1 hsy o internal horizontal sync signal (in phase with vbs) 2 vsy o internal vertical sync signal (in phase with vbs) 3 tst this is electrically opened during operation 4 nc 5 tst 6 gnd i ground 7 vsw i selection signal of two sets of video signals 1 8 gnd i ground 9 v cdc i dc bias voltage adjusting terminal of common electrode driving signal 2 10 vsh i positive power supply voltage 11 vbs i composite video signal 3 12 brt i brightness adjusting terminal 4 13 cnt i contrast adj usting terminal 14 col i color gain adjusting terminal 15 tin i tint adjusting terminal 16 vsl i negative power supply voltage 17 vri i color video signal red 5 18 vgi i color video signal green 19 vbi i color video signal blue 20 gnd i ground notes: in the following desc ript ions, ?igh me ans v sh and low means ?nd. 1. selects input sig nals, composite or rgb: a. when vsw is high or open, composite video signal (pin number 13) is s elected. b. when vsw is low, rgb signal set (pin numbers 17 through 19) is s elected. 2. common electrode driving sig nal (v com ) ge ner at ed in the modu le is obse rv ed on t he p in. t his sho uld be op ened d ur in g oper at ion , since the dc component of v com (v cdc ) is adjusted before shipping to the optimum value with v sh and v sl being the typical value. if the optimum value changes (for example, lowering of the power source), it sho uld be re-adjusted with the built -in v ariable resistor (v cdc ) or external circuit shown in figure 5. refer to ?djus ting method of optimum common electrode dc bias voltage for readjusting. 3. similarly, in case of rgb input, a pply composite video signal or comp osite sync signal (with negative polarity) for sync separator. 4. brightness, contrast, color gain and tint are adjusted by the dc voltage supplied to each pin. (contrast, color gain, and tint are not available for rgb signal input). they are a djusted to the optimum value on s hipping but they can be re-a djusted with the built-in variable resistor (brt, cnt, col, tin) or external circuit shown in figure 5. (however, since the contrast is adjusted to m aximize display characteristics, it is recommended not to readjust it and to keep outer adjustment terminals open.) 5. a. responsive to 0 v p-p to 0.7 v p-p analog rgb signal when vsw is fixed to ?ow. b. in case of superimposing on composite video signal as on scr een display (refer to note 1), rgb signals sh all be digital signal (low: 0 v p-p high: > 2 v p-p available for eight colors display). lq6nc 01/lq6nc02 tft-lcd module page 6 lcd data sheet
input/output terminals ?backlight driving section pin number symbol i/o description note l1 vl1 i power supply for fluorescent tube (1) (gnd) 1 l2 nc no connection l3 vl2 i power supply for fluorescent tube 1 (high) l4 vl3 i power supply for fluorescent tube 2 (high) l5 nc no connection l6 vl4 i power supply for fluorescent tube (2) (gnd) 1 note: 1. should be grounded by the backlight driving dc/ac inverter, as the l1 and l6 terminals are connected with the shielding film in the module. these terminals will be grounded by the optional dc/ac inverter. for internal electrical connection of backlight unit, see figure 4. caution: shielding case is separated from gnd terminal and electrically open. fluorescent tubes connectors 5703-1 l4 l5 l6 l1 l2 l3 shielding film figure 4. wiring diagram of backlight unit tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 7
recommended operating conditions ?tft-lcd panel section (gnd = 0 v, t a = 25 c) symbol parameter min. typ. max. unit note v sh positive power supply voltage +4.8 +5.0 +5.2 v v sl negative power supply voltage ?.6 ?.0 8.4 v vbs video input signal amplitude (peak level) 0.7 1.0 1.3 v p-p 1 v rgb (1) ?.7v p-p 2 v rgb (2) 2.0 4.0 v p-p 3 vi oc video input signal dc component 1.0 0 +1.0 v 4 v in digital input voltage ?high level +3.5 v sh v5 v il digital input voltage low level 0+1.5v v oh digital output voltage high level +3.5 v sh v6 v ol digital output voltage low level 0+1.5v v cdc dc bias voltage of common electrode driving signal ?.5 ?.5 2.5 v 7 notes: 1. vbs (composite video signal): input impedance: 75 . amplitude of s ync signal: >0.2 v p-p . 2. vri, vgi, vbi terminals (rgb signals for analog display). input impedance: >10 k . 3. vri, vgi, vbi terminals (rgb signals for s uperim posing). input impedance: >10 k . 4. vbs, vri, vgi, vbi terminals. 5. vsw terminal. input impedance: >50 k . 6. hsy, vsy terminals (internal sync s ignals). load r esista nce: >20 k . 7. adjusted for each module so as to attain maximum contrast ratio. refer to adjusting method of optimum common electrode dc bias voltage for adjusting. recommended operating conditions ?backlight driving section (t a = 25 c) symbol parameter condi tion min. typ. max. unit v l lamp voltage just for reference 290 330 370 v rms i l lamp current 6.0 7.0 8.0 ma rms f l frequency ?050khz v s kick-off voltage 800 v rms note: dc/ac inverter for dr iving c old cathode fluorescent tube ( ccft) is not built in the mod ule. dc/ac inverter for external connection (model number lq0j04) is optionally available. lq6nc 01/lq6nc02 tft-lcd module page 8 lcd data sheet
power consumption (t a = 25 c) symbol parameter c ondition min. typ. max. unit note i sh power consumption by the panel section positive supply current v sh = +5.0 v v sl = ?.0 v +120 +155 ma i sl power consumption by the panel section negative supply current 90 120 ma w s power consumption by the panel section total ?.321.73w 1 w l power consumption by the fluorescent tube section on rated lighting ?.66.0w2 notes: 1. excludes power co nsumption by the backlight. 2. calculated reference value (i l v l ). tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 9
video interface ic a -8 v (120 ma) b gnd bin gin rin vsl tin col cnt brt vbs vsh v cdc gnd vsw gnd tst tst tst vsy hsy c e d 5703-10 15 v -8 v 15 v 15 v 15 v 15 v cmos lsi 560 560 560 560 560 560 analog input superimpose superimpose 20 k 24 k 8.2 k 100 k 82 k 22 k 100 k 58 k 39 k 100 k 33 k 33 k 100 k 22 k 47 k sw sw sw sw sw 2 v - 5 v 15 v -8 v 15 v 15 v 15 v 15 v 33 k 33 k 33 k 33 k 18 k 39 k 33 k 22 k 27 k 20 k 20 k a b b c d e i/o signals 5 v 5 v 5 v 0 0 vertical 0.7 v pp 75 driver ics buffer tft - lcd panel cmos lsi tft-lcd module 560 560 15 v (155 ma) i/o connector 1v pp dc: < 1 v > -1 v optional inverter 50 k 0.1 f 0.1 f 0.1 f +12 v (500 ma) 0 0 notes: input impedance of a: 75 input impedance of b: >10 k input impedance of c: >100 k fluorescent tubes l1 l2 l3 l4 l5 l6 47 k 58 k 33 k v bl gnd 1 . 1 1 . 2 1 . 3 1 . 4 1 . 5 1 . 6 figure 5. tft-lcd module recommended circuit lq6nc 01/lq6nc02 tft-lcd module page 10 lcd data sheet
5703-11 vertical display period: 240 h 18 h 0.7 v p-p video signal (rgb) composite video signal vbs vsy hsy 4 h 3 h 16.7 ms 1.0 v p-p t pv t pv figure 6. input/output signal waveforms tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 11
5703-12 rgb video signal vri - vbi composite video signal vbs hsy 10.9 s horizontal display period: 50.0 s 50% 50% t pd t hs2 1 h = 63.5 s t hs1 figure 7. input/output signal timing chart timing characteristics ?input/output signals (v sh = +5 v, v sl = 8 v) (f h = 15.7 khz, f v = 60 hz) symbol parameter con dition min. typ. max. unit note t hsi horizontal sync input pulse width ?.2 4.7 5.7 ms t hs2 horizontal sync output pulse width f = f h 2.3 3.0 4.6 1 tpd horizontal sync phase difference 1.51.3 2 tvs vertical sync output pulse width 4/f h 243 256 269 tpv vertical sync phase difference ?7/3373/3979/45 3 notes: 1. adjusted by variable resistor ( h-pos). 2. variable range by v ariable resistor (h-pos). (positive when hsy proceeds vbs.) adjusted value: tpd = 0.1 s 0.7 s. 3. odd field/even f ield (1/f h /0.5/f h ). display time range horizontally: 10.9 s to 61.0 s from the falling edge of hsy. vertically: 19h to 258h from the falling edge of vsy. lq6nc 01/lq6nc02 tft-lcd module page 12 lcd data sheet
optical characteristics symbol parameter condition min. typ. max. unit note ? ? 11 viewing angle range cr 10 30 (10) degrees LQ6NC01 (lq6nc02) 1, 2 ? 12 10 (30) ? ? 2 45 cr max contrast ratio = 0 30 2, 3 t r response time rise = 15 ?0 ms 2 t d response time decay ?0 ms 4 y l brightness ?00120 nt 5 k l color temperature = 0 ?900 k 5 x white chromaticity 0.247 0.297 0.347 y 0.262 0.312 0.362 notes: 1. viewing a ngle range is def ined in figure 8. 2. applied voltage for measuring optical characte ristics: a. v cdc must be adjusted by the flicker measuring method or the contrast measuring method described in ?djusting met hod of optimum common electrode dc bias voltage. b. brightness adjusting terminal (brt) should be opened. c. video signal of reference b lack level and 100% white level must be input. 3. contrast ratio is calculated with the following formula in the optical characteristics measuring method shown in figure 10: contrast ratio ( cr ) = photodetector output with lcd being white ph o to dete cto r output with lcd being ?lack 4. input signals are applied to the area measured to make the area white and b lack?respectively, and change with time in the photodetector output is measured in the optical characteristics measuring method shown in figure 10. 5. measured on the center area of the panel at the viewing cone 1 by topcon luminance meter bm-7. 5703-2 12 o?lock direction normal line 2 ? 12 ? 2 ? 11 ? figure 8. definit ion of viewing angle range tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 13
mechanical characteristics external appearance there shall not be any conspicuous defects. (see outline dimensions diagram.) panel durability the panel shall not break when the panel center is pressed with 2 kg force by 15 mm diame ter smooth flat surface. caution: the least force can cause functional trou- bles if it is applied on the active area for a long time. i/o connector performance i/o connector of lcd panel driving circuit (fpc connector 20 pins): applicable fpc: shown in figure 11. te r m i na l hol d i n g fo r c e : 10 0 g o r l a r g e r / p in . ( e a c h terminal is pulled out at a rate of 25 3 mm/minute) insertion/pulling durability: contact resistance not larger than double the initial value after applicable fpc is inserted and pulled out 20 times. white t r t d time black white 100% 90% 10% 0% photodetector output (relative value) 5703-3 figure 9. definition of response time 5703-13 normal line photodetector (including luminosity factor) tft-lcd module figure 10. optical characteristics measur ing method lq6nc 01/lq6nc02 tft-lcd module page 14 lcd data sheet
i/o connector of backlight driving circuit (xh connector 3 pins x 2 pcs.) applicable connector housing: xhp-3 (produced by japan solderless terminal) te r m i n al hol d i n g f o r c e : 1 00 g o r m o r e / p i n . ( p ul l ed out at a rate of 1 through 5 mm/second) insertion/pulling durabili ty: contact resi stance not larger than double the initial value after connectors are inserted and pulled out 20 times. display quality the display quality of the color tft-lcd module shall be in compliance with the delivery inspection standard (separate sheet ldi-90522). handling instructions mounting of module the tft-lcd module is designed to be mounted on equipment using the mounting tabs in the four corners of the module rear face. when mounting the module, use the m3 tapping screw (fastening torque is 5 through 6 kg cm). be sure to fix the module on the same plane, taking care not to warp or twist the module. be sure that the power source is off when inserting/pulling out i/o conn ector of the module. precautions in mounting the polarizer, which is made of soft ma terial and susceptible to flaws, must be handled carefully. a protective film (laminator) is applied to the surface to protect it against scratches and di rt. peel off the laminator just before using to avoid static electric- ity. use caution when peeling off the lamin ator. working environment when the laminator is peeled off, static electricity may cause dust to stick to the polarizer surface. to avoid this, the following working environment is desir- able: floor: conductive (anti-electrostatic) treatment of 1 m or more on the tile or a conductive mat or conductive paint on the tile clean, dust-free room with an adhesive mat placed in the doorway humidity: 50% to 70% rh workers shall wear conductive (anti-electrostatic) shoes, conductive work clothes, conductive gloves and a ground strap. 5703-4 0.3 0.05 6 min 5 min 21.0 0.1 1.0 0.15 (r 0.5) 4 1 2 3 0.7 +0.07 -0.05 1.0 +0.02 -0.07 reference number name material 1 2 3 4 base material copper foil coverlay reinforcing plate polyimide or equivalent material (25 m thick) copper foil (35 m thick) solder plated in 2 to 12 m thickness polyimide or equivalent material polyester polyimide or equivalent material (188 m thick) figure 11. applicable fpc for i/o connector (1.0 mm pitch) tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 15
working procedures direct the wind of the heated ionized air disc harg- ing blower somewhat downward to ensure that the module is blown sufficiently. keep the distance between module and the blower within 20 cm (see figure 12a). attach adhesive tape to the laminator part near the discharging blower to p rotect polarizer against flaws (see figure 12b). peel off laminator, pulling adhesive tape slowly to your side taking five or more seconds. it is impor- tant it take more than five seconds. after peeling off the lami nator, pass the module to the next work process immediately without getting the module dusty. method of removing dust from polarizer: ?low off dust with n 2 blower for which static electricity preventive measures have been taken. an ionized air gun (hugle electronics co.) is recommended. since the polarizer is vulnerable, wiping should be avoided. if wiping is unavoidable, wipe it carefully with lens cleaning cloth, breathing on it. belleseime (kanebo, ltd.) is desirable. when metal parts of the tft-lcd module (shield- ing lid and rear case) are soiled, wipe them with a soft, dry cloth. for stubborn dirt, wipe the part, breathing gently on it. wipe off liquid immediately since it can cause color changes and staining. the lcd is made of glass pla tes. use care when handling it to avoid breakage. this unit contains cmos lsis which are sensitive to electrostatic charges. take care to protect the unit from electrostatic discharge. precautions in adjusting module adjusting volu mes on the rear face of the module have been set optimally before shipme nt. t here- fore, do not change any adjusted values. if ad- justed values are changed, the specifications described in this technical literature may not be satisfied. other precautions do not expose the module to direct sunlight, strong ultraviolet lig ht, etc., for prolonged periods. store the unit at normal room temperature to pre- vent the lc from converting to liquid (due to exces- sive temperature changes). if the lcd panel breaks, the liquid crystal may escape from the panel. the liquid cry stal is harmful, so do not put it into the eyes or mouth. when liquid crystal sticks to hands, feet or clothes, wash it out immediately with soap. observe all other precautionary requirements in handling general electronic components. direction of wind from blower adhesive tape discharging blower 20 cm or less module 5703-5 a b figure 12. proper use of discharging blower lq6nc 01/lq6nc02 tft-lcd module page 16 lcd data sheet
shipping requirements packing form is shown in figure 13. carton storage conditions number of layers of cartons in pile: 10 layers maxi- mum. environmental conditions: ?emperature: 0 c to 40 c. ?umidity: 60% rh or less (at 40 c). no dew condensation even at a low temperature and high humidity. ?tmosphere: harmful gases such as acid and alkali which corrode electronic components and wires must not be detected. ?torage period: approximately three mon ths. ?pening of package: to prevent the tft-lcd module from being damaged by s tatic electricity, adjust the room humidity to 50% rh or higher and provide an appropriate measure for electo- static grounding before opening the package. result evaluation criteria under the display quality test conditions with nor- mal operation sta te, there shall be no change which may affect practical display function. other information if any problem should arise from this specification, the supplier and user should work out a mutually acceptable solution. reliability test items number test item conditions 1high temperature storage test t a = 60 c, 240 h 2 low temperature storage test t a = 25 c, 240 h 3 high temperature and high humidity operation test t a = 40 c, 95% rh, 240 h 4 high temperature operation test t a = 40 c, 240 h 5 low temperature operation test t a = 0 c, 240 h 6 electrostatic discharge test 200 v, 200 pf (0 ), once for each terminal 7 shock test 100 g, 6 ms , x/ y/ z, three times for each direction (jis c7021, a-7 condition c) 8 vibration test frequency range: 10 to 55hz stroke: 1.5 mm sweep: 10 hz to 55 hz to 10 hz two hou rs for e ach di rec tio n o f x/y /z (si x h ou rs tota l) (jis c7021, a-10 condition a) 9 heat shock test ?5 c to +60 c/5 cycles, (two hours/cycle) (1h) (1h) cocom this product falls under strategic product according to the export trade control ordinance in force. export of the item requires an export license issued by the related authorities. please confirm with sharp whether the license is necessary since the ordinance may be revised by the authorities. tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 17
bottom pad 5703-14 top pad partition a partition b module static electricity protective sack carton 20 modules in each carton figure 13. packing form lq6nc 01/lq6nc02 tft-lcd module page 18 lcd data sheet
construction of tft-lcd module tft-lcd module is composed of an lcd panel, driver ics for the lcd panel, a control circuit for the driver ics, a video signal processing circuit (video interface circuit) peculiar to lcd, and a backlight. the driver ics are divided into two types: a source driver (data driver) which receives rgb signals and sends them sequentially by one horizontal line of the lcd panel, and a gate driver (scan driver) which scans 240 gate lines of the lcd panel. the circuit diagram is shown in figure 3. the module displays an image on the lcd panel as it receives power supplies (v sh , v sl ), composite video signal, rgb video signals, dc bias voltage of common electrode driving signal (v cdc ), selection signal of composite and rgb video signals (vsw), brightness adjusting dc voltage (brt), color gain adjusting dc voltage (col), tint adjusting dc vol tage (tin), and contrast adjusting dc voltage (cnt), from the exterior. the composite video signal is subject to synchro- nous separation in the module and used to write a video signal accurately on each pixel on the module. the control circuit receives composite synchroniz- ing signal separated in the video interface ci rcuit, generates clock pulses synchronized with the com- posite synchronizing signal and gate and source driv- ers-driving signals, and outputs internal horizontal synchronizing signal ( hsy), internal vertical synchro- nizing signal ( vsy) and polarity inversion signal (frp). the voltage level of rgb video signals applied to the liquid crystal layer of each pixel through the source driver and tft is about 3.7 v p-p from black to white level. in order to prevent the electro-chemical decomposition of the liquid crystal, it is necess ary to apply ac voltage to the liquid crystal. for this pur- pose, the polarity of the video signals must be alter- nated. since the amplification and polarity inversion of the video signals are performed in the video inter- face circuit in the module using the polarity inversion signal (frp), composite video signal of 1.0 v p-p or standard analog rgb signals of 0.7 v p-p , may be used for both of the inputs to the module. power supplies to this module are 5 v (v sh ), 0 v (gnd), and 8 v (v sl ). control ic operates on 0 v to 5 v line so that it outputs hsy and vsy at 0 v to 5 v level. power supplies to the video interface circuit are v sh and v sl . vsw is used to select c omposite or rgb video signals. vsw selects composite video signal when it is high or open, and selects rgb signals when it is low. brt, col, tin, cnt and v cdc are adjusted to the optimum value on shipping. the module contains backlight (cold cathode fluo- rescent tubes) but not a driving ci rcuit for the back- light. therefo re, it is necessary to install a dc/ac inverter for driving the fluorescent tubes. standard dc/ac inverter (model na me: l q0j04 is available as an option. in addition, the backlight of the module is designed to be replaceable, and backlight unit (model name: lq0b04) is available as a service part for the replace- ment. example of tft-lcd tv figure 14 shows a block diagram example of the tft-lcd module applied to a tv set. the block enclosed by the dotted line is the tft- lcd module. other signal processing systems are the same as those in ordinary crt-tvs. the following seven signals must be supplied to this module from the exterior: composite video signal: vbs standard analog rgb video signals signal for selecting input video signals: vsw dc bias voltage of common electrode driving sig- nal: v cdc brightness adjusting dc voltage: brt color gain adjusting dc voltage: col tint adjusting dc voltage: tin the following two signals are output from this mod- ule to the exterior: internal horizo ntal synchronizing signal: hsy internal vertical sync hronizing signal: vsy when this module is applied to a tv set, for exam- ple, hsy and vsy are used to display selected chan- nel number and characters on the screen. tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 19
syn fluorescent tube tuning input tuning voltage tuning indicator video buffer amplifier video amplifier source driver source driver tft-lcd panel tuner pif amplifier video detector sif amplifier sound detector audio amplifier synchronous separation polarity inversion chroma amplifier y - dl hsy, vsy gnd v sl v sh gate driver controller rgb vsw brt col tin cnt v cdc apc dc/dc converter color demodulator aft agc vbs tft-lcd module video interface 5703-15 dc/ac inverter rgb figure 14. block diagram of tft- lcd tv set lq6nc 01/lq6nc02 tft-lcd module page 20 lcd data sheet
adjusting method of optimum common electrode dc bias voltage to ob ta i n o p t i m u m d c bi a s vol t a g e o f c ommon electrode driving signal (v cdc ), photoelectric devices are very effective, and the accuracy is within 0.1 v. (in visual examination method, the accuracy is about 0.5 v because of the difference among individuals.) to gain optimum common electrode dc bias volt- age, there are two methods which use photoelectric devices. the value of optimum dc bias voltage is the same in both methods: measurement of flicker: dc bias voltage is adjusted so as to minimize 60 hz (30 hz) flicker. measurement of contrast: dc bias voltage is adjusted so as to minimize the photoelectric output voltage. measurement of flicker photoelectric output voltage is measured by an oscilloscope at a system shown in figure 15. dc bias voltage must be adjusted to minimize the 60 hz (30 hz) flicker with dc bias voltage changing slowly (figure 16). measurement of contrast photo-electric output voltage is measured by oscil- loscope or x-y recorder by using the sy stem in fig- ure 15. common electrode dc bias voltage must be adjusted so as to minimize the photoelectric output voltage with dc bias voltage changing slowly (fig- ure 17). output voltage photoelectric device lcd oscilloscope (x-y recorder) 5703-16 v cdc figure 15. measurement system 5703-17 dc bias voltage = optimum +1 v dc bias voltage = optimum ch1 = 20mv 5ms/d ch1 = 22mv 5ms/d figure 16. waveform of flicker 5703-18 photoelectric output v cdc (v) notes: 1. measurement is more accurate at half tone as compared with other gradation level. change of photoelectric output is small at black level. 2. dc bias voltage must be adjusted slowly. the value of opti- mum common electrode dc bias changing fast is different from that when changing slowly because dc response is slow. 3. the final adjustment of dc bias voltage must be made by changing from positive to negative. x-y recorder output -4 -3 -2 -1 optimum dc bias voltage figure 17. optimum common electrode dc bias voltage by measurement of contrast tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 21
-4 -3 -2 vs = 3.5 v vs = 2.5 v half tone x-y recorder output photoelectric output vs = 1 v black level dc bias voltage 5703-19 note: optimum common electrode dc bias voltage is almost equal between halftone and black level. it is difficult to decide the optimum point at black level. figure 18. relation between gradation level and dc bias voltage x - y recorder output photoelectric output dc bias voltage (0.5 v/cm) 5703-20 note: the value of the minimum point is not definite because dc response is slow and the optimum point can not be attained. figure 19. output voltage with dc bias voltage changing fast lq6nc 01/lq6nc02 tft-lcd module page 22 lcd data sheet
outline dimensions made in japan 5 66 44 16.6 6.3 2-c3.9 input for backlight pwb ac x 2 gnd x 2 9.8 20.1 14.7 23 max view from terminal side 19 21 0.1 0.3 0.03 20 1 clamp hole 4 - 2.6 depth fitting screw: h3 lapping screw 2 - 6.1 socket a 1.3 2.8 114.6 63.1 62.5 71.8 97.4 screen size 113.8 x 87.6 arrow direction indicates upside of lcd screen 72.7 76.7 socket c 6.5 socket d 40.5 31.6 1.8 5703-8 11 117 max backlight unit can be free by taking off these screws. m2.6 1 2 5 6 7 3 tft-lcd module LQ6NC01/lq6nc02 lcd data sheet page 23

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