G191C SII | Alldatasheet
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- 1.1 General oc cc cece eee e cece eee e cece e ence ceeeeces
- 1.4 Electrical Characteristics (Excluding EL Backlight)
S I I @ AN.No.G191C-090E LIQUID CRYSTAL DISPLAY MODULE WITH BUILT-IN EL BACKLIGHT G191C USER’S MANUAL Seiko Instruments Inc. .
AN.No.G191C-090E NOTICE This manual describes the technical information, the function, and the operation of the G191C Liquid Crystal Display Module of Seiko Instruments Inc. Please read this manual carefully to familiarize yourself with the functions and to make best use of them. The descriptions here are subject to change without notice. Revision Record Edition Revision Date -1 Original September 1990 ©Seiko Instruments Inc. 1990 Printed in Japan -i-
AN.No.G191C-090E 1, SPECIFICATIONS
1.1 General
The G191C is a thin liquid crystal display (LCD) module that consists of a full dot- matrix LCD panel, CMOS LSIs and EL backlight. The 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
- Full dot-matrix structure with 192 dotsx 128 dots + 1/128 duty - FSTN LCD: black and white display using RCF (Retardation Control Film) + Transflective LCD, anti-glare, 6 o'clock viewing angle - Built-in EL backlight + Positive type display data "H" (display ON) :black, display data "L" (display OFF) : white - Four-bit parallel data input - Two power supplies : Vpp= 5 V, Vuc=~-5 V to -20 V ( for driving liquid crystal ) - Weight : Approx. 100 g
1.3 Absolute Maximum Ratings
| _ tem | symbot | conainions | min [max [unit | voo | | oe [Operating temperature | Tow | sosvua | 0 | sso [| [ storagetemperaure | tmp [| 20 feo Te
1.4 Electrical Characteristics (Excluding EL Backlight)
Vss = OV, Ta = 0°C to 50°C - vvoltege Moo | as | soo [sas |v | ower su} voltage input vorage Sh Voo= 5v#5% | 08Voo | = | Yoo | v | Input voltage
5 Ta = 25°C
vont | 02 | Vopzzov [| = | 31 | so | ma _| Current consumption Vics -12.4V [|_ Frame frequency | tram | voo=sve5% | 65 [7 [75 [mz _| * Display pattern : checker pattern -1-
AN.No.G191C-090E
1.5 Optical Characteristics
1/128 duty, 1/12 bias, Vopr=17.4V, Ta = 25°C symbol | Conaitions | min. | tye._| Max | Reference_| Viewing angle ce2z0a=0 | a | - | - | notesta2 Response time (fall) a=0,G=0 | - | i5oms | 230ms | Notes | Note 1: Definition of angles @ and @ Note 2 : Definition of viewing angles 61 and 62 Z (6=0°) Light (when reflected) Sensor a UG hiw Y ¥4@ = 180°) pry, Contrast i ' 20 prom afenn nnn nnn nnn NG” 41 Nl x’ X(B=9 Ne ANN a ' ! | \\O a1 a z @ a Viewing angle 6 (@ fixed) Light (when transmitted) ¥(@=0") Note: Optimum viewing angle with the (9 =90°) naked eye and viewing angle 6 at Cmax. above are not always the Note 3: Definition of contrast C Note 4: Definition of response time eam Vope _ : Brightness (reflection) of unselected dot (B,) Voltage _ Brightness (reflection) of selected dot (B,) w) ” ~ ~ Ir Brightness (reflection) of --- selected dot Unselected | Selected state | Unselected state i state (display ON! (display OFF) (%) L* brigh right 10% f Brightness Brightness . L (ellection) of (transmission) |100% 90% Brightness unselected dot (reflection) Dark D K> ko ton tott
1 Note: Measured with a transmissive LCD
0 panel which is displayed 1 cm? Operating voltage (v) Vopr: Operating voltage fram ; Frame frequency ton: Response time (rise) to: Response time (fall) -2-
AN.No.G191C-090E
1.6 EL Backlight Characteristics
(1) Absolute Maximum Ratings symbol_| conditions | min. | max. | unit_| Driving voltage tktztmin | | 200 | ves | Operating temperature | Top | | -20 =| +50 |e | storagetemperature [tay | | =20 | soo] Operatinghumidity | | are |= Ts |e (2) Operating Range Driving voltage | vat | tts ft vers Drivingtrequency | fa | so | aon] to00 te (3) Brightness and current consumption characteristics | tem | conditions | in. | tye, | Man. Va=usvems [60 | 70 | s00 came _ fexaone | [a 0s en] sosiomrh | = ToT mem _ (4) Service life . 40°C, 95%RH, 100 V rms, 400 Hz [soo | tr | Service life* 20°C + 5°C, 60%RH, 100 Vrms, 400 Hz 1800 * Time until the brightness decreases to the half of the initial value -3-
AN.No.G191C-090E
1.7 Dimensions
Unit : mm/inch General tolerance: + 0.5mm sasiew| | 7780.9/9.05uVomng eee) | (6.25/20) tr9n.220.2/-9 126 2 2.snay Lose, a NU anne TTS g 1S € ag pst _/ _ iia | 13) b TEs =| = 4 é ' 1 | 2/8 3] 8 3/212 | q| 2 is el als S 8) 8 bet are 5 ' Re | a zis cS Height of IC Sg To * < = Ih <ie~ th $ it i ee 1.2£0.2/.007 S pel a \\4-91.020.2/ st id 3.5max./ ——— st Bs 30. 0/1181 35.0/1.378 = HH ° 0.37/.018 Figure 1 Dimensions [V/O Terminal Functions ] [No [symbat [ No. | symbor [1 [os | Display data input ls | po | Display data input [2] v_ | Display data input | 9 | voo_| Power supply voltage (1): +5 V [3 | am | One-frame timing signal GND:0V Liquid crystal AC drive control 1 Vic Power supply voltage (2) : signal - 12.4 V (typ.) le [ az | Display data shift clock EL driving voltage * Since Fgnp terminal is connected to the metal frame of the module, use the terminal to ground the frame. -4-
AN.No.G191C-090E 2. CIRCUIT STRUCTURE
2.1 Liquid Crystal Driving Circuit
The drive waveform of the LCD panel is shown in Figure 2 on the next page. Since DC voltage will damage the liquid crystal, an AC voltage is applied between the two frames. The signal controlling this is the liquid crystal AC drive control signal (M). The frame frequency is normally set to 70+5 Hz to prevent screen flicker. The G191C has a 1/128 duty cycle, and the common electrodes are selected within a frame by time division from electrode 1 to electrode 128. This is called line sequential scanning. The voltage level of the segment electrodes determines whether the dots at the intersection of the segment electrodes are selected or not, 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. The voltage between the segment and common electrodes is thus applied to the liquid crystal. The selection waveform for SEGg-COMg and the non-selection waveform for SEG1]-COM] 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 Segment non-selection level Segment non-selection !evel Common and segment selection level -5-
AN.No.G191C-090E SEG 0 1 2 M j | J om (MIDI —Vs 7 | -—S—,, 3 0 OOO ' ae Ve 1 yy Va ase —- Vv, COM ; __ Ve | —+— ° aes —— | ~" | Ya SEG eee —_ —_— — Va | a Vopr wee JL_ W1WVopr SEG 9-COM 9 J see —. (Selection waveform) | W12Vopr — Vopr 10/12Vopr wee W12Vopr SEG ;-COM , +e -1 Vp (Non-selection waveform) tonev. - opr Figure 2 Drive waveform -6-
AN.No.G191C-O90E
2.2 Circuit Structure
The G191C consists of common drivers, segment drivers, a bias voltage generation circuit and EL backlight. Figure 3 shows the block diagram. Do~D. ae M, CL1 C2 a 0 0 ty rj uy FLM. |_| Vop Segment Segment Segment driver 1 driver 2 driver 3 Vss Common Sem 192x128 full dot-matrix LCD Common driver 2 Va Ve Va Vy Vay Vb, Vev Vi Common driver : HITACHI HD61105 Segment driver : HITACHI HD61104 Bias voltage generation ec circuit Vew Veg EL backlight Figure 3 Block diagram -7-
AN.No.G191C-090E (1) Common driver (HITACHI HD61105) A common driver (CD) is a CMOS IC with 80 drive outputs. The G191C has two CDs, whose internal registers are connected 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 128-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 liquid erystal AC drive control signal (M) in the drive circuit, and the common drive waveform is formed. Table 2 Shiftregistercontent_| m___ | comoutput | a H re L (2) Segment driver (HITACHI HD61104) A segment driver (SD) is a CMOS IC with 80 drive outputs. It operates as follows. Input four-bit data is sequentially taken into the internal register by the falling edge trigger of the display data shift clock (CL2). SD has a chip enable function. After 80 bits of data are taken into SD1, the next data is automatically taken into SD2. G191C has three SDs and 192 bits of data can be taken. The display data taken into internal register are latched by the falling edge trigger of CL1. As shown in the Table 3, the segment output is selected according to the display data and M in the drive circuit, and the segment drive waveform is formed. Table 3 Displaydata | sm __| stGoutput_| L The relationship between the display data and display screen is shown below.. » [2 To [or | oo Tos [oe | i 192 x 128 dots (1/128 duty) Figure 4 -8-
AN.No.G191C-090E
2.3 Timing Characteristies
2.3.1 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. |_ttem [min [Max [unit] Jo fo | 2 | ms | [oe [| 2 [ = [om | [os [oo TP = Tom] iy, Cronn +5V sick ised Ox ann eteteeeeneeteeneteitone area te GND iii ees 1) Input signals +2 Data valid t exe Sietetateietatatatatetetetatetetteteaiiateeeeeet ees GND Vic ee weeee ene eee “BV to -20V Figure 7 Power ON/OFF and signal input timing
2.3.2 Timing Characteristics
Ta = 0°C to 50°C, Vpop = 5.0V 45%, Vss= OV Pine [ | om | [atone fete | = [| fertsh eetwiam [we | vs | > | = | fatiow ewe | wer | som | = | m _| [pas wupinet [| wi | | = | =| paw roines [wm | | = | = | [i phaesiteence [wm | = | 30] = _| jaxeztarine | w | = |] = | [enone if we | ef feanoniewi wan | wae [vo | - |» _| faziowiee! wan | wea | no [=| m [earovine | me | | = -10-
AN.No.G191C-090E
2.4 Interface Circuit
2.4.1 Interface with MPU signal
The G191C is controlled by the MPU circuit, whose interface is easily set up when the LCD controller is used. The LCD controller has basic functions such as receiving information related to the display from the MPU circuit, and sending display timing signals and display data'to the LCD module, and other functions such as cursor display. The G191C must use LCD controllers conforming to the following conditions. © controller for a full dot-matrix LCD module © capable of transferring data to the LCD module in four-bit parallel © capable of driving the LCD module at 1/128 duty The following section gives examples of interfaces using the OK] MSM6255GSK, SEIKO EPSON SED1330FBA and HITACHI HD64646FS controllers. -12-
AN.No.G191C-090E (1) OKI MSM6255GSK MPU MSM6255GSK cs DIEN G191C WR UPa_+[i Tp | Data DBo~DB, bus [Y_| FRMB_ TT ow | mm wes Tear (li RDo~RD7 = fe} az | S — mes ya G a OE _— 19 | Voo | | 10 | Vss | [12 [Fao | = [13 | Ves | WE Display Tac! MAg~MA, Address DC power supply +5V GND -5Vto -20V Figure 10 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 -13-
AN.No.G191C-090E (2) SEIKO EPSON SED1330FBA MPU SED1330FBA ra G191C - R/W " [1 | 3 | Ao [2] o | : = bate Le be sets Tar | VDo~VD7 |-x5, [7 | 4 | 19 | Von | 110 | Vss | bispl 111] vc | ispla rvs splay veiw [12 [oxo | ft L14 | vers | VAg~VAI5 DC power supply +5V GND -5Vto -20V Figure 11 Interface circuit with SED1330FBA [ Features of the SED1330FBA ] © Interface with 80-series or 68-series MPU possible © Built-in character generator ROM : 160 kinds e@ External character generator -CG RAM : (8x16 dot-matrix) x 64 kinds -CG ROM : (8x16 dot-matrix) x 256 kinds e Layered mode: AND, OR, XOR, "preferred" OR @ CMOS process © Scrolling (vertical and horizontal) e 5-V single power supply -14-
AN.No.G191C-090E (3) HITACHI HD64646FS MPU HD64646FS J“ SR RES bus [LA cuoisp wa va | G191C beelies picof|ooe-won [3 Ta] M |_| ca us Tar] Selector}, >] MDo~MD7|_CL2 [6 [cuz | We a (Uo 4 cs | ed ee lcs | 19 | Voo | 111 | vic | [12 [ Feo | Hf ve | ‘ ' [14 [Vers | RS bus Ao MAo~MAis| DC power supply +5V GND -5Vto =20V Figure 12 Interface circuit with HD64646FS [ Features of the HD64646FS] Interface with 80-series MPU possible ¢ Character font @ Layered mode : OR (character and - Vertical : 1 dot to 32 dots graphics) - Horizontal : 8 dots : e Character reverse, blinking, all black, © Scrolling all white - Vertical : smooth or character unit © Cursor - Horizontal : character unit - ON/OFF; blinking speed, form and @ CMOS process position are programmable @ 5-V single power supply -15-
AN.No.G191C-O90E
2.6 Suitable Inverter SKI-050-05H
The SKI-050-05H is the inverter for EL backlight of G191C. The inverter requires 5V power supply to drive EL lamp. EL lamp service life is much longer when used with an inverter rather than with a fixed power supply, because the inverter adjusts EL brightness by changing output voltage and oscillation frequency as EL lamp life decreases. (1) Electrical Characteristies (when combined with EL lamp) Symbol Oscillating frequency Ta= 25°C, Vin=5V DC 600 typ. | ow | Output voltage Ta= 25°C, Vin=5V DC 100 typ. |_ovrpurcurrent__| tour [ta=25°vin=svoc | 11 |__impurcurrent_ | w_|t9=25'vin=svDC | 120%yp inputvottage | vw | | 5.0yp, (2) Tolerance (inverter only) Input voltage 4.0 to 5.0 25 10 75 (3) Maximum ratings (inverter only) | imputwottage | cov Storage temperature range -20 to +70 (4) Dimensions (Unit: mm) @ & ESS} nko oj — +l] +i 3 | i] Pe ——— 5. - 20207 3.60.8 “0s 26+1.0 £| ae eens ial ee = wy [Pave [_fonaiow —_| ° Input: 5 V DC re ee s | 3 | Common:GND Figure 13 - 16 -
AN.No.G191C-090E 3. NOTES Safety + If the LCD panel breaks, be careful not to get the liquid crystal in your mouth. If the liquid crystal touches your skin or clothes, wash it off immediately using soap and plenty of water. 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 very fragile; handle it very carefully. Mounting and Design + Mount the module in 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. w Example Small gap Transparent plate i cS | oe \\OX ‘Screw - Keep the module dry. Condensation can damage the transparent electrodes . + Since high voltage is applied to the EL terminals, do not touch the EL terminals and the EL lead terminals. poccicicicisss if ot fa i i EL lead terminals i i @ i i ; Leet @ es fs)
19 OGG OGOOOHGOOOON O
-17-
AN.No.G191C-090E Storage + Store the module in a dark place where the temperature is 25°C +10°C and the humidity below 65% RH. + Do not store the module near organic solvents or corrosive gases. + Do not crush, shake, or jolt the module or its components. 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 ketonie solvents (ketone and acetone) or aromatic solvents (toluene and xylene), as they may damage the polarizer. - 18 -
AN.No.G191C-O90E Index -B- Bias value... eee ee eee eee cece e cece eee cence eee eeeeesesees 5 BrightnesS 1... cece eee e cece cece cece rece eres cee veesssesces 8 -C- Cleaning 2.2... ee eee eee eee eee cee cence eee eees 18 Common drive waveform ....ee cece eee e cece eect cere cere eecces 8B Common driver 1... cece cece cece cece eee cere reece ceeees 7,8, 11 Contrast ce eee eee cece cece cece eer eee e rece eee essences 1,2 -D- Data valid... cece cece cece eee c eee cee e reese recess eeeee 10 Definition of contrast .... eee cece eee eee ee eee cence ences ecene 2 Definition of response time 6... eee eee cece ee eee ee cee eee eeees 2 Display data input 1... ee eee eee eee eee ce eee cece eee eerseeeee 4 Display data shift clock 2... . ee eee eee cece reece cece eee eeceeee 48 Drive waveform 2... eee e cece eee e eee cece ree reeeseesecees 556 -E- Effective voltage 12... cece eee e eee ewe eee cece cen e ees ceseee 5 EL backlight 11... eee e cece cece cece e eee e ee cecececees 1,3, 7,9, 16 -F- Flicker 2.2.22 ee eee eee eee eee ee eee rece eee 5 -H- - HITACHI HD64646FS 16... cece cece eee cece eee eee eee ee eeee «= 12,15 Input Current cee cece cece eee eee eee eee ee eee eee teense eens 16 Inverter . eect cc ee eee ee eee eee eee e eet eeeeee 9, 16
AN.No.G191C-090E -l- LCD controller sce cece eee c cece cece cece cence ccc eceeecececs 12 -N- -O- One-frame timing Signal 2.0... cece eee e cece e cece cece ee ecees 48 -P- Power supply voltage .. ee cee eee cece eee cece cee eee eeeeeeces 1,4 -R- Resistance division 1.6... eee e eee cece cece eee cece ee eeeeeee 9 Response time (rise) 2... ee ccc cee eee eee eee e wee cece nce eeseeee 2 Ss Segment driver 2... eee eee eee ee ee ee eee eee eee eee eenee 7, 8,11 SEIKO EPSON SED1330FBA «2... ee eee eee eee cece eee eeceves 12,14 Selection waveform ....ecececc er ec ere eececeeeececeescerees 56 Service life... cece cece cece eee cece cece eee e ee reecccccees 8 Storage wee cece cece eee eee cece eee e reer e eee e eee eee eeenes 18 -v- “Viewing angle ee}
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