LIQUID CRYSTAL DISPLAY MODULE G 3 2 1 EV USER`S MANUAL
Contents
1. 22 0 866 8 f E 5 2 5 5 zb 20 515 26 515 S amp 6081 95 97 3 778 Display area 1 044 zo E 150 0 1 0 5 906 g zj 5 03 0118 S 5 3 0 27 0106 0 03 0012 E BP a 5 5 A ees y vase care n ERU F C pale is ae Soo omponents height se z DODI Eg es f VO Terminal Functions Figure 1 Dimensions CN1 PI 5 pr 5 Diy detainee 0 NC or liquid crystal AC drive control signal 10 Vo Power supply voltage 1 5 V P Ves ooo v LEG pou supply voltage 2 13 Liquid crystal drive voltage 6 Display data input adjustment terminal E 7 o Dseiaydatainput The Fenp terminal is connected to the module metal frame Use this terminal to ground the frame The display is on when DISPOFF is H and off when L CN2 CFL connector socket IL G 3S S3C2 JAE socket contact IL G C2 SC 10000 JAE Mating connector board mount type IP G 3P S3T2 E straight type JAE IL G 3P S3L2 E right angle type JAE Symb ps One common line timing signal 4 Display data shift clock Display ON OFF control DISPOFF terminal z Nw 3 Ya Fe oFtbaWghdiesuni Not connected to Vss GND of CN1 AN No G321EV 560E 2 CIRCUIT STRUCTURE 2 42. Display patterns Checkered patterns Display data shift clock frequency 3 0 MHz AN No G321EV 560E 1 6 2 STN type Blue transmissive type Vss 0V Ta 0 C to 50 C Power T i eee EE mt amc E Vop sve5 o o2voo v EUEETUE Vpp 5 0 Y Vic 24 0 V Current consumption Vo 16 2 V E mA f a 70HzTa 25 0 57 15 m ETT Display patterns Checkered patterns Display data shift clock frequency 3 0 MHz 1 7 Optical Characteristics 1 7 1 FSTN type Black and white transmissive type 1 240 duty 1 13 1 bias frm 70 Hz Vopr Vpp Vo CFL seal ON w pel mI 6 C220 Viewing angle UN w Contrast Note 3 20 6 V Response time rise oe S Response time fall Vopr 20 6 V EEE Note 4 Response time rise 9 DA m 1100 1700 Response time fall 22 4 500 750 Measuring instrument Canon illuminometer LC 3S 1 7 2 STN type Blue transmissive type 1 240 duty 1 13 1 bias fem 70 Hz Vopr Vpp Vo CFL pao ON Le ees onis ree e ts ue um tren A C gt 2 0 Viewing angle vanes m E Contrast 25 C Note 3 K NH AM EIFIEIEIBES Response time rise time m 9 TA ante 170 EX e Measuring instrument Canon illuminometer LC 3S AN No G321EV 560E Note 1 Definition of angles 0 and o Z 0 0 Sensor X 90 CFL backlight Y 0 0 0 90 Note 3 Defi
3. 3 6 Recommended CFL Inverter 3 6 1 Model name INVC303 HITACHI 3 6 2 Absolute maximum ratings 2 Standard Item Symbol Conditions min max Unit Power supply voltage SEE x aa Y Operating temperature No freezing or condensation Operating humidity No freezing or condensation 0 Storage humidity No freezing or condensation 0 Storage temperature No freezing or condensation i i i 19 AN No G321EV 560E 3 6 3 Electrical characteristics Ta 25 C lconr_ CFL ON 8 31 Eis fe Min 24 0 V Vin 24 0 V Ta 0 C 2 sec Load CFL backlight unit BL 5 ASD HITACHI 1 Measurement circuit 1 2 Measurement circuit 2 1 Measurement circuit 1 fg oscillation frequency In power Supply current le output current Measuring conditions Load CFL03 88EX57G L tube for G321EV Output lead wires Type UL1015 Length 1 2200 mm lo ls 200 mm Connection Lead wires should be connected to the CFL without being bound as shown above CN11 2 terminal GND CFL is on OPEN CFL is off Measuring instruments Power supply current Digital voltmeter TR 6853 TAKEDA RIKEN or equivalent Q Output current High frequency AC ammeter 2016 class 1 0 YEW or equivalent Oscillation frequency Multicounter 255 KIKUSUI or equivalent Figure 15 Measurement Circuit 1 20 AN No G321EV 560E 2 Measurement circuit 2 High pressure probe Synchroscope Mea
4. Layered mode AND OR XOR preferred OR e CMOS process Scrolling vertical and horizontal 5 V single power supply 16 AN No G321EV 560E 3 HITACHI HD64646FS MPU HD64646FS gt Selector R1 18 ko R2 3 9 VR 10 ko MAo MA s Figure 13 Interface Circuit With HD64646FS Features of the HD64646FS e Interface with 80 series MPU possible e Character font e Layered mode OR character and Vertical 1 to 32 dots graphics Horizontal 8 dots Character reverse blinking all black all white Scrolling e Cursor Vertical smooth or character unit ON OFF Horizontal character unit Blinking speed form and position are e CMOS process programmable e 5 V single power supply zem 7 AN No G321EV 560E 3 CFL BACKLIGHTING The G321E has a built in CFL cold cathode fluorescent lamp backlight A CFL inverter is not built in so use the recommended CFL inverter 3 1 Absolute Maximum Ratings Ta 25 C Item Circuit voltage Vs 2000 max Vs 3 2 Electrical Characteristics tem B Staringvoltage Vs Ta 9C 650 V rms CFLinverter INVC 303 HITACHI Inverter input voltage Vin 24 0 V With the rise in voltage between the CFL terminals the glow discharge is generated at the CFL electrodes and CFL lights as this discharge grows The starting voltage is the voltage at which the light has become stable and maintainable 3 3 Bri
5. un To co a Ra Coena T DAE 5 9 11 Op rating h midity depre iu e ot ERE E ERR aed t e 19 Operating temperature sssssssssssseseeseseeene ener entere nnen enses ss nnns entes nensi nnns innen 2 19 Operational amplifier esses a e ennt da aaia aer iae intrent nnns 10 11 ett or eni a dr cea yc Eb rep ete tA du 20 PPOSItIVe iode 5 d 1 6 Power supply Current id detect ainda 20 Power supply voltage cece eeceecee cece eeeeeeeeaeeeeeeeeeceeaaaaeceeeeeeeseceanaeeeeeeeeeseesinaeeeeess 2 3 5 19 20 22 RESISTANCE CIVISIOM ud das ett ie 11 Response 3 4 RESPONSE TIME MSC 3 4 T AN No G321EV 560E Segment drive wavetOrms 6 dia 9 Segment dIVel 5 eee UTER 8 9 13 SEIKO EPSON SEDTOSSQE 5 Ernie ta otc ir e ob retietate tu a Permis 14 16 Selection WAV ETON ai his a a Pte cvi cy ee Ha co cepa ce D De rov deba dee Hoa COS Pa co PD e eoa dud 6 7 SERVICE ct C 19 Side lighting 2 aes unte eg Pa et ite ative PEEL ced b 1 SIN Ice x T M Des LE c T 1 3 10 hcc EMT 26 Storage humidity ete tete te ecd Dto cue rae 2 19 Storage temperalute oe e ede dd fo 2 19 Temperature of transforme
6. AN No G321EV 560E LIQUID CRYSTAL DISPLAY MODULE G321EV USER S MANUAL Seiko Instruments Inc AN No G321EV 560E NOTICE This manual describes the technical information as well as the functions and operation of the G321EV Liquid Crystal Display Module made by Seiko Instruments Inc Please read this manual carefully to familiarize yourself with the functions so you can make the best use of them The descriptions here are subject to change without notice Revision Record Edition Revision Date 1 Original June 1995 Seiko Instruments Inc 1995 Printed in Japan AN No G321EV 560E CONTENTS 1 SPECIFICATIONS 1 1 Gen ral 2i ie a enh Ae es eed its 1 172 Features i Ped EE de 1 1 3 Option Specifications ne suiriri ia enne entente 1 1 4 Absolute Maximum Ratings excluding CFL backlight 2 1 5 Mechanical Characteristics esses 2 1 6 Electrical Characteristics excluding CFL backlight 2 1 7 Optical Characteristics esssssssssssessseseeeenennnenene nennen 3 1 8 LCD Panel Lifetime cede edite depend 4 1 9 Dimensions eet Ur tet tet aee Ls RT nd 5 2 CIRCUIT STRUCTURE 2 1 Liquid Crystal Driving Circuit essen 6 MEE e SUCU 8 2 9 Timing Characteristics 2 12 2 4 Interface GIIGUIT us a e recie rt esteem 14 3 CFL BAC
7. CD controller has basic functions such as receiving information related to the display from the MPU circuit sending display timing signals and display data to the LCD module as well as other functions such as cursor display The G321E must use an LCD controller conforming to the following e For a full dot matrix LCD module e Where data is transferred to the LCD module in four bit parallel e Where G321E display screen has 1 240 duty The following section gives examples of interfaces using the Oki MSM6255GSK Seiko Epson SED1330F and Hitachi HD64646FS controllers 14 AN No G321EV 560E 1 OKI MSM6255GSK MPU Display RAM DC power supply Figure 11 Interface Circuit With MSM6255GSK Features of the MSM6255GSK e Interface with 80 series MPU possible Cursor ON OFF Blinking speed form and position are programmable Scrolling and paging CMOS process e 5 V single power supply 15 AN No G321EV 560E 2 SEIKO EPSON SED1330F MPU G321E E C N e Poy o Vop SS n 5 O x 2 O 8 8 2 o a of o D 1 18 R2 3 9 VR 10 ko DC power supply 5 V Figure 12 Interface Circuit With SED1330F Features of the SED1330F e Interface with 80 series or 68 series MPU possible e Built in character generator ROM 160 kinds e External character generator CG RAM 8x16 dot matrix x64 kinds ROM 8x16 dot matrix x256 kinds e
8. KLIGHTING 3 1 Absolute Maximum Rangs errre aa E S 18 3 2 Electrical Characteristics ssssssssssseeeee enne 18 353 Brighth SS ER 18 34 Seice 19 3 5 Connector for CFL Backlight cccccccsceseceeseeeeeeeeeeeeeeseeeeeseaeeeseaeeseneeeeaees 19 3 6 Recommended CFL Inverter sssssssssseseeeee enne 19 3 7 CFL Backlight Replacement Procedures ssssssseeeeeee 23 4 NOTES niteat ient itt d rea pitt eter reru t ea 25 INDEX AN No G321EV 560E 1 SPECIFICATIONS 1 1 General The G321E is a thin liquid crystal display LCD module that consists of a full dot matrix LCD panel CMOS LSIs and a CFL backlight The LCD panel features a wide viewing angle and high contrast The full dot matrix structure allows both graphics and character display In addition the display is clear and stable with no image warping or position skew because the display position is specified by the intersection of transparent electrodes in a matrix 1 2 Features e Full dot matrix structure with 320 x 240 dots e duty e Four bit parallel data input e Two power supplies Vpp 5 V Vic 24 V for driving liquid crystal e Built in CFL backlighting high brightness side lighting type using one CFL Easy replacement of the CFL e Weight Approx 19549 1 3 Option Specifications Background T Model name Dot color n Viewing color angle FSTN type Transmissive wit
9. Liquid Crystal Driving Circuit The G321E LCD panel drive waveform is shown in Figure 2 Since DC voltage will damage the liquid crystal AC voltage is applied between the two frames The signal controlling this is the liquid crystal AC drive control signal M Depending on the LCD panels increasing the liquid crystal AC drive waveform frequency may improve the display quality The G321E contains a circuit that generates AC drive control signal M which has a higher frequency than that of M The frequency of the M signal is adjusted according to the LCD panel to provide the best display quality The use of an external M signal is also possible if necessary The liquid crystal driving circuit using an M signal does not require an M signal to be input However the interface circuit should be provided with M signal input for compatibility with the liquid crystal driving circuit using a M signal The frame frequency is normally set to 70Hz 5 to prevent screen flicker The G321E has a 1 240 duty cycle and the common electrodes are selected within a frame by time division from electrode 1 to electrode 240 This is called line sequential scanning The voltage level of the segment electrodes determines whether or not the dots at the intersection of the segment electrodes are selected when the common electrode is selected As shown in Table 1 there are six drive waveform voltage levels Va to Vf The voltage level is determined by the bias value
10. ND 5 V DISPOFF GND t 20 ms t 50 ms t gt 20 ms Figure 8 Power ON OFF and Signal Input Timing 2 3 2 Timing Characteristics 0 C to 50 C Vpp 5 0 V 5 Vss 0 V Ta rosene tas o e Jounin eel wh wan 8 cit evel wan wom xm mew dm w w Proa me tm m oram e 9 L enoarme e OL2 cycle time ta m CL2 high level width ae s r CL2 low level with was 45 be CL2 setup time tps CL2 hold time tou CL2 rise to CL1 rise lip CL2 fall to CL1 fall tsi CL1 rise to CL2 rise CL1 fall to CL2 fall liu 12 AN No G321EV 560E Timing Chart 1 Timing of Signal Input Into Common Driver F 1 frame torem FLM Re _ i ee 240 pulses FLM tri s tr uH CL1 twcL1H Figure 9 Timing Chart 2 Timing of Signal Input Into Segment Driver gt CL1 1 1 ee ee Re Ld DoD _ _XNXtX2X3X_ _XNXEX2X_ NX NX OC D we Segment driver cascade number a N tweuiL CL1 ix lip i tly CL2 A IN 4 t E te tweL2L 2 tps tou Do to Ds Figure 10 13 AN No G321EV 560E 2 4 Interface Circuit 2 4 1 Interface with MPU signal The G321E is controlled by the MPU circuit whose interface is easily set up when the LCD controller is used The L
11. The voltage between the segment and common electrodes is then applied to the liquid crystal The selection waveform for SEGO COMO and the non selection waveform for SEG1 COM1 are shown in Figure 2 The size of the effective voltage of the waveform determines whether the liquid crystal under the selected dots is in the selection or non selection state Table 1 Common and segment selection level Common non selection level Segment non selection level Segment non selection level Common non selection level Common and segment selection level In black and white negative mode the dot is white when the display data is 1 and black when 0 In blue negative mode the dot is white when the display data is 1 and blue when 0 AN No G321EV 560E ee 2 3 bs9 o 1 2 3 230 SEG 1 frame SEG SEG V d Selection waveform Vopr E c 1 13Vopr SEG o aps p Vopr 11 13Vopr Q 1 13Vopr SEG COM PIU Non selection waveform 11 13V opr Figure 2 Drive Waveform AN No G321EV 560E 2 2 Circuit Structure The G321E consists of common drivers segment drivers a bias voltage generation circuit an M generation circuit and a control circuit Figure 3 shows the block diagram for the G321E When an M signal is used instead of an M signal the M signal is directly input to the segment drivers and the common drivers driver 1 drive
12. der bush then pin If any of the holes on either of the parts are unaligned then move the lamp holder to align the holes Take up the slack on the lamp cable that goes through the notches on the circuit board and back through the hook of the lamp holder and return it to its original position 24 AN No G321EV 560E 4 NOTES Safety If the LCD panel is damaged be careful not to get the liquid crystal in your mouth and not to be injured by crushed glasses If you should swallow the liquid crystal first wash your mouth thoroughly with water then drink a lot of water and induce vomiting and then consult a physician If the liquid crystal should get in your eye flush your eye with running water for at least fifteen minutes If the liquid crystal touches your skin or clothes remove it and wash the affected part of your skin or clothes with soap and running water High voltage is present between CFL electrodes To prevent electric shock do not touch the wiring while the power is on Be sure to turn the power off when connecting or disconnecting the connector Use the LCD module within the rated voltage to prevent overheating and or damage Also take steps to ensure that the connector dose not come off Handling Avoid static electricity as this can damage the CMOS LSI The LCD panel is made of plate glass do not hit or press against it Do not remove the panel or frame from the module The polarizer on the display is
13. e display data shift clock CL2 The SDs have a chip enable function After 80 bits of data are taken into SD1 the next bit of data is automatically taken into SD2 Since G321E has four SDs 320 bits of data can be taken The display data taken into the internal register are latched by the falling edge trigger of CL1 The segment output is selected according to this display data and M in the drive circuit and the segment drive waveform is formed as shown in the Table 3 x Invalid AN No G321EV 560E The segment output is controlled by the DISPOFF signal When the DISPOFF signal is low Va is output to the segment irrespective of the display data and of the M signal Therefore by bringing the DISPOFF signal to low V4 is output both to the common and to the segment electrodes making the voltage applied to the liquid crystal zero and the display goes off The relationship between the display data and display screen is shown below 320x240 dots 1 240 duty Figure 4 3 Vopr control circuit Display screen contrast and viewing angle are affected by changes in the liquid crystal operating voltage Vopr As shown in Figure 5 external Vic is supplied to the operational amplifier and Vopr Va to Vi is generated and applied to the LCD panel R12 18 kQ VR 10 ko R2 3 9 Figure 5 Also display screen contrast and viewing angle are influenced by the ambient temperature The recommended Vop level at diff
14. erent temperatures is as follows Temperature FSTN Black and white Vopr Vpp Vo 10 AN No G321EV 560E 4 Bias voltage generation circuit Six voltage levels V4 to are applied to the common and segment drivers The voltage is generated through operational amplifiers by resistance division from the liquid crystal operating voltage Vopr Here an operational amplifier is used as a voltage follower Vbo O Va Vopr Operational amplifiers O Vi 1 13 1 bias 13 1 4 R 9 1 Ry Figure 6 Bias Voltage Generation Circuit b M generation circuit As Figure 7 shows the M generation circuit performs an XOR on the one common line timing signal CL1 on which A time division is performed and the one frame timing signal FLM on which B time division is performed and outputs liquid crystal AC drive control signal M Values A and B are set according to the LCD panel so that the best display quality can be obtained and the drive voltage can be changed A frequency L1 B divider Bf i P requency FLM divider XOR gate Figure 7 M Generation Circuit 11 AN No G321EV 560E 2 3 Timing Characteristics 2 3 4 Power ON OFF and Signal Input Timing Power ON OFF and signal input should be performed according to the timing shown in the figure below in order not to damage the LCD driving circuit and the LCD panel Vp 5 V GND GND Vic Vic 5 V Input signals G
15. ghtness Brightness and the starting voltage of CFL change according to the ambient temperature This is because the radiation efficiency of the mercury in the CFL lamp varies depending on the vapor pressure Particularly the brightness decreases at low temperatures Brightness is also low immediately after CFL power on since the vapor pressure of the mercury is low Brightness increases gradually with increasing mercury vapor pressure as the CFL lamp generates heat and thus the lamp wall temperature rises ax ve pun em ymbo onaition ni S Brightness Ta 25 C 3 C FSTN type 50 cd m At the center of 30 to 85 RH black and white the LCD surface 30 min after STN type CFL power ON blue 100 130 CFLinverter INVC303 HITACHI Inverter input voltage Viy224 0 V LCD driving conditions optimum Vopr fg y 70 HZ LCD display pattern All ON display All data H 18 AN No G321EV 560E 3 4 Service Life Ta 25 0 3 C 10 000 min Time until the brightness decreases to half of the initial brightness or time until the CFL is not lit because of the increase in CFL starting voltage CFL driving conditions 23 1 mA rms 3 5 Connector for CFL Backlight Connector for CFL backlight Socket IL G 3S S3C2 JAE Contacts IL G C2 SC 10000 JAE Se CFL backlight drive signal lp 3 1 mA rms fpe 247 kHz Not connected to the LCD driver ground 1 3 Figure 14
16. h CFL G321EV5R000 black and White Black 6 o clock backlighting white white negative mode Transmissive with CFL STN type l pne G321EV5B000 bide White Blue 6 o clock backlighting white ue negative mode The LCD colors are affected by temperature so the colors at low or high temperature differ slightly from those in the above table On a negative mode LCD the dots are white when the display data is high and black G321EV5R000 or blue G321EV5B000 when the display data is low To get a positive display on a negative mode LCD invert the display data before inputting it to the module AN No G321EV 560E 1 4 Absolute Maximum Ratings excluding CFL backlight Vss 0 V Power supply voltage DX Vov 30 0 prem Vov 30 0 Storage humidity __ _ 48hrs_ _ 20 85 1 5 Mechanical Characteristics Module dimensions HxVxT mm Viewing area HxV mm Active display area HxV mm Dot dimensions HxV mm H Horizontal V Vertical T Thickness max 1 6 Electrical Characteristics Excluding CFL Backlight 16 1 FSTN type Black and white transmissive type Vss 0V Ta 0 C to 50 C tem Symbo Conditions min Typ max unit ieget ee Vop 5 V Vo2 Vic 23 0 5 0 Power supply voltage ese e eee COE a d 64 Vpp 5 0 V Vic 24 0 V 15 m Current consumption Vo 15 6 V faw 70HzTa 25 c 57 15 mA Vos 5
17. nition of contrast C Brightness of selected dot Bz C Brightness of unselected dot B4 Brightness of selected dot l B Brightness Brightness of unselected dot Operating voltage v 1 8 LCD Panel Lifetime Brightness transmission Note 2 Definition of viewing angles 61 and 62 Cmax Contrast C Viewing angle 6 fixed Note Optimum viewing angle with the naked eye and viewing angle at Cmax above are not always the same Note 4 Definition of response time 1 Voltage V Unselected Selected state Unselected state state display O display OFF Bright Operating voltage fet Response time rise tort Frame frequency Response time fall 25 C 10 C lt 65 RH 100 000 or more Definition of lifetime the time up to occurrence of any of the following Contrast reduces to 30 of the initial value Current consumption becomes three times the initial value Orientation deteriorates significantly The display malfunctions AN No G321EV 560E 1 9 Dimensions Unit mm inch General tolerance 0 5 mm 0 02inch 143 0 0 3 5 630 3 5 138 128 3 5 051 103 0 4 055 Viewing area 4 3 5 4 6 138 IL G 3S S3C2 JAE 3 5 138 PCB N R 0 4 R 039 29 0 1 142 32 5 1 280 8 0 315 D 89 0 0 3 3 504 2 5 3 96 0 2 0 3 78 320240 dot
18. o plastic rivets that secure the lamp holder to the circuit board Push on the tip of the rivets to loosen them and then pull them out Because the rivets are made up of two pieces that come apart when you remove them from the circuit board take precautions not to lose any part of the rivets 5 The lamp holder is clamped on to the light guide in two places While holding the board with your fingers so it does not move first wedge a flat head screwdriver into the space between the board and one end of the lamp holder next very gently pry it loose do not force it from the fittings Fig 19 then repeat the procedure on the other end and remove the lamp holder Fig 20 Lamp holder a Figure 19 Lamp holder _ Figure 20 23 AN No G321EV 560E co lt 10 Loosen the cable of the replacement lamp so that it is easy to slip around the board Because the cable is held tightly by the hook pull it through the loop and loosen it Loop both wires around the board and through the notches so that the plug is under the board Doing one side at a time align the clamps of the lamp holder with the notches on the light guide and snap on the lamp holder Fig 21 If the light guide moved when you removed the lamp holder and you are unable to locate the notches it slightly slide the light guide up to reveal the notches Figure 21 Reinsert both plastic rivets in their original positions in the following or
19. o the inverter output connector Do not use an extension cable Be aware of the proximity of other parts and the casing to the secondary wiring of the inverter the potential of these parts may significantly affect the electrical characteristics and startability of the inverter N 22 AN No G321EV 560E 3 The transformer mounted on the inverter gets very hot therefore do not use the inverter in a closed small space 4 Always use AWG No 26 or thicker wire on the input side of the inverter 5 Make sure that the fluctuating load caused by use of the inverter does not turn into a fluctuation of voltage and affect the other circuits 3 7 CFL Backlight Replacement Procedures The G321EV backlight is structured so that the lamp holder and the light guide can be divided making it possible for the lamp holder with a built in lamp to be replaced without disassembling the module The CFL backlight replacement procedures are as follows CAUTION Always turn off the power before replacing any parts because the inverter operates at high voltage Also do not force any of the parts around the base of the lamp cable when moving it While holding the mold of the lamp cable at the base with your finger loosen and adjust the other the parts 1 Turn off the power 2 Remove the lamp cable from the backlight power supply of the inverter 3 Loosen the cable that is secured by the hook on the lamp holder 4 Remove the tw
20. play data shift ClOCK nennen anaa eene e nnne nnne 5 9 Display ON OFF control terminal oro iine kon Po aaas 5 BITS WAV ET ONIN E ITI EE E E N 6 7 E Effective Voltage nesana e sieh ib e A O 6 F PICK E E A E 6 Frame eguen yonne tetto et eda ten 2 3 4 6 Frame grounq died d i a 5 S02 1524 dtt etse nimbus c beef 1 2 8 10 H AN No G321EV 560E L N O P R Input CUETent counted eben dette edite tete en det ee b tung 20 D e t E OB die 2 3 lesser 12 VO terminal f nctions hace hel teat iode Dag e nee aiden eee Mae 5 Lamp a ee 18 0s 6 Perr Hei ere nui 18 IlGD cohtroller 14 4 Liquid crystal drive voltage adjustment terminal seen 5 Liquid crystal AC drive control signal sss 5 6 9 11 Liquid crystal operating volage srera kannn s En EE AAE AEN eene ener nnne 10 irinin PE 8 11 Negative MOde esit 1 6 NOn S l6Ctlon 6 7 OKLMSMO6255GSK od DEEE Raiana 14 15 One common line timing signal sess nnns 5 9 11 One frame timing signal essei o coi Raten i cure nbn ndn
21. r 26 AN No G321EV 560E Index B Backlight ON OFF control aa a e EA EAA 21 22 Bias value Ine neun oan 6 Bias voltage generation circuit ses rassin e NE ener entren 8 11 Block diagram niea Ln a ain ip Ad 8 BriQWthi SS 18 C CFL backlight drive signal sese en nennen nnns nnne nens 5 19 GEL backlightilig eter ite 1 18 CELnVverterain duet avecei baec a vex i ee DA Toe o bra ecu Hove D E Pie DD e TX dw a 18 19 Chip enable f lictiOnos iore ite tertii cc re e tpi ths ri ri ERE 9 Gl anitig s tie a aah ode fait a etn 26 Common drive 9 Common dive taoa henn na n eter o a eal ah eta p ime Bhat Pre anh we ew ex P Pao 8 9 13 Connector tor CFE backlight th e et ettet otras 19 Glo T I OTI TREES RES 3 4 Current consutmpliOLi s ths e tert e ii e ftare Pung DEE 3 D Definition Of contrasta ui oe eo e ee ee 4 Definition of response time cone iae e e ee et ned die p re eds 4 Definition of viewing ANQIOS ecceececeesseeeeeeseeeeeeeeeeeeeeesaeeeeeeaeeeeeesaneeseeneseseeseeeeseeseeaeeesneseeeeneaes 4 Display data Input inr been d ken eb e m e ie adeb 5 Dis
22. r 2 driver 3 driver 4 320x240 full dot matrix LCD lt lt lt lt a Va Vb Ve Vi Bias voltage generation circuit Common driver HD66205 or MSM6598 Segment driver HD66204 or MSM6599B Vopi Va Vt V control d circuit Figure 3 Block Diagram for G321E 1 AN No G321EV 560E Common driver HITACHI HD66205 or OKI MSM6598 A common driver CD is a CMOS IC with 80 drive outputs The G321E has three CDs whose internal registers are connected to each other They operate as follows Input one frame timing signal FLM is taken into the internal shift register by the falling edge trigger of the one common line timing signal CL1 and sequentially shifted After 240 CL1 input the next FLM is input and the same operation is repeated As shown in Table 2 the common output is selected according to the shift register contents and the internally generated liquid crystal AC drive control signal 3 in the drive circuit and the common drive waveform are formed Table 2 x Invalid The common output is controlled by the DISPOFF signal when the DISPOFF signal is low the common output is V irrespective of the shift register contents or the M signal Segment driver HITACHI HD66204 or OKI MSM6599B A segment driver SD is a CMOS IC with 80 drive outputs The G321E has four SDs which operate as follows Input four bit data is sequentially taken into the internal register by the falling edge trigger of th
23. r e sorain rr air EA EE EERTE nennen ARA nennen nnns 21 MI Inte 1 3 4 M reciba bipes 8 10 Seiko Instruments Inc Head Office Components Overseas Sales amp Marketing Department 31 1 6 chome Kameido Koto ku Tokyo 136 Japan Phone 03 3682 5201 FAX 03 3637 0117 Seiko Instruments U S A Inc Electronic Components Division 2990 W Lomita Blvd Torrance Calif 90505 Phone 310 517 7770 FAX 310 517 7792 Seiko Instruments GmbH Siemensstra e 9 6078 Neu Isenburg Germany Phone 49 6102 297 0 FAX 49 6102 297222 Seiko Instruments H K Ltd Sales Division 4 5 F Wyler Centre 2 200 Tai Lin Pai Road Kwai Chung N T Kowloon Hong Kong Phone 852 4218611 FAX 852 4805479 Seiko Instruments Taiwan Inc 5F 1 No 99 SEC 2 Chung Shan Rd Taipei 104 Taiwan R O C Phone 886 2 563 5001 FAX 886 2 521 9519
24. suring instruments No load output voltage Synchroscope IWATSU DS 6121A or equivalent High pressure probe IWATSU HV P30 or equivalent Figure 16 Measurement Circuit 2 9 6 4 Temperature of transformer Standard Conditions Unit Temperature of transformer Ta 50 C Vin 24 V a ux 3 6 5 Inverter connection diagram INVC303 24 V Vin Q CONT INVC303 GND Connect a current limiting resistor Icont 1 3 mA to 1 7 mA 1 5 mA typ Figure 17 Inverter Connection Diagram 3 6 6 Backlight ON OFF control The ON and OFF of the backlight is controlled using CONT pin the backlight is on when CONT pin is connected to GND and off when CONT pin is open 24 AN No G321EV 560E 3 6 7 Dimensions Unit mm 2 64 040 1 4 510 5 70 5 0 2 79 5 0 5 CN 11 175487 3 AMP Mating connector 173977 3 AMP Power supply voltage 24 V Backlight on off control PONT ON GND OFF OPEN Ground OV CN 12 IL G 3P S3L2 E JAE L3 pepe SS Figure 18 3 6 8 Precautions in using the inverter As the output of the inverter is high voltage never touch it When connecting the inverter to the CFL the following must be considered to avoid stray capacity effects Do not twist together or tie the CFL connector cables Metal plates and metal foils if located close to the CFL and its wiring affect the brightness and the starting voltage of the CFL Connect the CFL connector directly t
25. very fragile handle it very carefully Mounting and Design Mount the module using the specified installation sections and holes To protect the module from external pressure put a plate of transparent material such as acrylic or glass over the display surface frame and polarizer Leave a small gap between the transparent plate and the module Example Small gap Transparent plate yo Exterior surface Keep the module dry Condensation can damage the transparent electrodes If the CFL lamp and its wiring are located close to a metal plate or metal foil the stray capacity will cause the voltage to fall which will decrease the brightness and increase the starting voltage Be careful in designing the casing and the CFL wiring 25 AN No G321EV 560E Storage Store the module in a dark place where the temperature is 25 C 10 C and the humidity is below 65 RH Do not store the module near organic solvents or corrosive gases Do not crush shake or jar the module or its components Black or white air bubbles may be produced if the module is stored for a long time in the lower temperature or mechanical shocks are applied onto the module Cleaning Do not wipe the polarizer with a dry cloth as it may scratch the surface Wipe the module gently with a soft cloth soaked with a petroleum benzine Do not use ketonic solvents ketone and acetone or aromatic solvents toluene and xylene as they may damage the polarize
Download Pdf Manuals
Related Search