G121C00P000

G121C00P000 SII | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 27

Technical content

Datasheet sections

• 1.5 Electrical Characteristics (excluding LED backlight)

AN.No.G121C-0-562E LIQUID CRYSTAL DISPLAY MODULE G121CO0P000 G121CB1P000 USER’S MANUAL Seiko Instruments Inc.

This manual describes the technical information, as well as the functions and operation of the G121C 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 Sept. 1994 “2 Oct. 1994

3 June 1995

©Seiko Instruments Inc. 1994 Printed in Japan -i-

1. SPECIFICATIONS 1.1. General The G121Cis a very thin LCD module on which a full-dot matrix LCD panel and a CMOS IC driver are integrated. The LCD panel used here features wide viewing angle and high contrast. This full dot configuration allows a wide variety of patterns to be displayed depending upon the input data. The display position is the intersection point of the matrix transparent electrodes. This prevents display distortion and displacement. 1.2. Features G121COOP000/G121CB1P000 + 128x128 full dot matrix configuration + 1/128 duty, 1/10 bias - Four-bit parallel data input + Awide temperature range, gray mode STN LCD panel + Positive display Display data “H”: Display ON: blue display color Display data “L": Display OFF: gray background G121C00P000 + Dual power supplies: Vpp = +5V,Vic = —24V (for driving liquid crystal) + Reflective type + Weight : Approx. 59 g G121CB1P000 + Triple power supplies: Vpp = +5V, Vic = -24V,LEDA (for driving LED) + Transflective type + Abuilt-in LED backlight (color: yellow-green) + Weight: Approx. 75g -1-

1.3 Absolute Maximum Ratings (excluding LED backlight)

Vss = OV [| vp [| fo to Powersupplyvoltage | vic | | Vp -30.0 | Voo | ov | Voo = 30.0 Operating temperature seswrn | -20 [| +7 |< | Storagetemperature | Tay | | 30 =| +80 |e idity [| S4ehrs | +20 [ves |r| Storage humidity 48 hrs +20 +85 De

1.4 Mechanical Characteristics

128% 128 dots Module dimensions (Hx Vx T) [mm] G121COOP000 : 86.0 x 95.0 x 7.0 G121CB1P000 : 86.0 x 95.0 x 9.0 Viewing area (H x V) [mm] Active display area (H x V) [mm] 62.69 x 62.69 Dot dimensions (H x V) [mm] 0.46 x 0.46 Dot pitch (H x V) [mm] 0.49 x 0.49 Weight [9] G121C00P000 : 75 max. G121CB1P000 : 100 max. H: Horizontal V: Vertical T : Thickness (max.)

1.5 Electrical Characteristics (excluding LED backlight)

Vop = 5V#5%, Vss = OV, Ta = —20°C to +70°C VomMc [230] - | -so| v | Input voltage Fo [= foave.| v_| Current consumption*1 Vo = -15.0V faue7ore | - | 41 | 32 | ma | Framefrequency | fam | | os | 70 | 7s | te | *1 Display patterns: checkered patterns. Display data shift clock frequency: fc_2 = 3.0 MHz -2-

1.6 Optical Characteristics

1.6.1G121C00P000 1/128 duty, 1/10 bias, frum = 70 Hz, Vopr = Vpp —Vo Viewingangle |_@2 | @=0 | ase [ so [ - | - | Notes 1&2 oe | ss [| - [ - | @ = 0° Contrast te pre: fase | as | as | Vopr = 20.0 V a= 0, = Response time = 0. ~ soe |_=—|_1060 | 1700 rn en eo Measuring instrument : Canon illuminometer LC-3S 1.6.2G121CB1P000 1/128 duty, 1/10 bias, fem = 70 Hz, Vopr = Vpp — Vo, LED backlight: ON Viewing angle Bao oy |e Lse_f = | = J ocatee | notes 1 2 oprs7o | so [| - | - | @=0° Contrast ¢c @ = 0° jase | 20 | 24 | Note 3 Vopr = 20.0 V =0° Response time Ge roe | =} 100 4700 Note 4 [ ton | &=0° 2860 | 4600 ton_| B=, oe L_ Vopr = 22.0 | - | 780 | 1300 | Measuring instrument : Canon illuminometer LC-3S -3-

Note 1: Definition of angle @ and @ Note 2: Definition of viewing angles 61 and 62 Z (@=07 Light (G121c00P000) Sensor Contrast ¢ iy WA Cmax. a. Y (= 180%) wae, iy 7 | N WZ LCD panel (a) A ! PANGAN a H ' 4p YO 6 @2 @ Viewing angle 1 ¥ (B=0%) Remark : The optimum viewing angle by visual inspection Ligh (0=90°) and angle @ at Cmax do not always match. (G121CB1P000 : LED ON) Note 3: Definition of contrast (C) Note 4: Definition of response time Voltage| Voor = c Brightness of non-selecteddot —_B, ) ~ oe . Brightness of selecteddot By Sale is in Ak be eee noone nee bs Pee Brightness curve for 4 selected dot (%) 1 By wit - Te -sell stati LY aha rorseteced [aes | uanisisaya x curve for non- selected dot Light Yt 10 7 Brightness H 90% i Brightness |100% 1 By Dark t

0 Operating voltage(v) ake bem To

Vopr : Operating voltage ton: Response time (rise) frum : Frame frequency tott: Response time (fall) Note: Measurement must be made using a G121C transmissive LCD Panel. Figure 1 Definition

1.7 LCD Panel Lifetime

• begees 25°C + 10°C Lifetime <65%RH 100,000 or more | ts | * 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. -4-

1.8 Dimensions

Unit : mm General tolerance : + 0.5 86.0 gas. [ sto a) 1.0 som] nom a]. oy 202 [2.0mex 1220.2 [Tz 0 max ot = off = YY ln 2 i & T lz z H : 3 2 | | ig ig | ;| ls 3 | ' H Pa j g| ! | 3 | | | = . KF Wooccccccdd 0000s OH i | oH sa P Tessas dL ey Giz1c00P000 —G121cB1P000 us|] ; 82.2 [Tusy 0.46. 0.03 ee “| eee ~ ia) Ss ba en | ° Fi 2 Di i [VO terminal functions ] igure imensions [No ]symboi] Functions | [wo] symbor_ [Functions Power supply for logic: +5V [10] o1 | Display data input [2 [Fewo [Frame ground"? | [11 02 [Display data input [3 [| a2 | Display data shift clock [12] p3_ | Display data input | 4 | INH | Display ON/OFF control terminal*2 [13] vic_| Power supply for LC drive : - 24V [5 | Fim | One-frame timing signal vy, Liquid crystal drive voltage [6 | cu | One-common-line timing signal ° adjustment terminal [1s { vss [eno:ov fepw [nc ———SS—~di ns [ene = SSCSC~=*Y L9 | 00 | display data input nenedc[=*3 *1 The Fenp terminal is connected to the module metal frame.Use this terminal to ground the frame. *2 The display is ON when INH is H, and OFF when L. *3 G121CO0P000 : NC G121CB1P000 : Power supply for LED drive(No.16 : LEDA, No.17 : LEDC) -5-

2.1 Liquid Crystal Driving Circuit

the LCD panel to provide the best display quality. The frame frequency is normally set to 70 + 5 Hz to prevent screen flicker. Figure 3. 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.

AN.NO.G1Z10-U-302E SEG 1 frame 0 1 2 M 1 __ Va COM 1 | | I, SOOO] i eee Ve ' v, Va cee —— Vp COM ; —__Ve a see — Ve SEG 0 a ——— Va Ly. | Va SEG ; yy pL Vopr wee 1/10Vopr SEG 9-COM j L..._ (Selection waveform) | -1/10Vopr — Vopr 8/10Vop; —Tb- 1N10V.5 SEG ;-COM 4 vo NOV oor (Non-selection waveform) a Figure 3 Drive Waveform -7-

2.2. Circuit Configulation The G121C consists of common drivers, segment drivers, a bias voltage generation circuit, an M’ generation circuit and a Vopr control circuit. Figure 4 shows the block diagram for the G121C. Doto Dg srrssseesesssessessseeseeeeeeesstsnsnssnnseneenenmnnesneecsesnnnnnneeeneeeimmnnnnseeersneeeeesessnnannnaneag a2: c—ad4 i | NOT l : AWA DA i M i Migen- A i —+| ion : Nc Greutt Segment Segment i : driver 1 driver 2 : FLM : i Common : Vop i CY driver 1 Ep : Vss : | 128 x 128 full dot-matrix LCD : : Common] H : Va driver 2 i Ve i : Va : Vi Vas Vb Ver VE gy eg } | Bias voltage : : q : i i+] generation i : LED backlight : : Vo i [Vopr(Va to V1) ii i 3 control bot i Vic i circuit ii i LEDS ecuneunennennennanneunnned —_f LED module with LED backlight . G121CB1P000 Common drivers : HD66205TF Segment drivers : HD66204TF Figure 4 Block Diagram for G121C -8-

ANNU. 12 1-0-2026 (1) Common driver (HITACHI HD66205TF) Acommon driver (CD) is a CMOS IC with 80 drive outputs. The G121C has two 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 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 internally-generated liquid crystal AC drive control signal (M’) in the drive circuit, and the common drive waveform are formed. Table 2 Common Output [inn | Shift register content | ow | COM output Display ee eee L x: Invalid The common output is controlled by the INH signal; when the INH signal is low, the common output is Va, irrespective of the shift register contents or the M’ signal. (2) Segment driver (HITACHI HD66204TF) A segment driver (SD) is a CMOS IC with 80 drive outputs. The G121C has two SDs, which operate 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). The SDs have a chip enable function. After 80 bits of data are taken into $D1, the next bit of data is automatically taken into $D2. Since G121C has two SDs, 128 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. Table 3 Segment Output a H . L Poe fx er x: Invalid The segment output is controlled by the INH signal. When the INH signal is low, Va is output to the segment, irrespective of the display data and of the M’ signal. -9-

2.3 Timing Characteristics

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. Vpp oS ili GND ed palette teeter atataetat tetera tated tatataatatatatataretatarenateds (ated ty ty GND - nomen nn nnn nena nnn nnn nanan newer nnn naan Vic re it te Inputsignals *9¥ GND t3 te iwH FEV Tomo r rnc nnn nn gay GND Seiaieieiataiataieitateneneieniateleteteieneianaien t,=0ms, tz=0ms, t3 = 20ms Figure 9 Power ON/OFF and Signal Input Timing

2.3.2 Timing Characteristics

Ta = -20°C to 70°C Vpp = 5.0Vt5%_ Vss = OV [nem symbot | min. ym. | ox | une] [FuMcycletime tem [133 P43 [isa | ms | [eLtcycietime +t tear | 0] m6 | - | «| [cLthigh level width [twas | 50 Ps [cow level width f twan [oot f= = Ts [clirisetime id er | - | - | > | | [eltfaltime +i ten | — | - | 30 | ms _| [FuMsetup time [tees [too fs [AllowableMdelaytime | tom | | — | 300 | rs _| [clacycletime tee | Tos [clzhigh level width | twa | 45 | Tons [ClLztow level width | twa | 4s T= Ps [cl2rise time tee P| 5s [cata time tre PO ns |Datasetup time | tos, [20 | T= os [Datahold time | tow | 0 Ps [cz rise to cutie | tue Ps [eztento citar | ta | #0 | - | - | =| [cli rise toci2rise | tts | os [cli fall to cz fall | ts To Ts * trci2, tecL2 < cous twei2i —tweat -12-

2.4 Interface Circuit

2.4.1 Interface with MPU signal

The G121C00P000 and the G121CBIP000 are 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, sending display timing signals and display data to the LCD module, as well as other functions such as cursor display. The G121C must use an LCD controller conforming to the following: © Fora full dot-matrix LCD module @ Where data is transferred to the LCD module in four-bit parallel @ Where G121C display screen has 1/128 duty The following section gives examples of interfaces using the Oki MSM6255GSK, Seiko Epson $ED1330F/1335F, and Hitachi HD64646FS controllers. -14-

(1) OKIMSM6255GSK MPU cs DIEN G121C00P000 WR G121CB1P000 Data Deo~ve, HS 3 | cuz _| bus fe ina] mm re 2 inne RDo~RD, FP te [cur _| ii i z L | fet | DIR > >| CG ROM KH] RAg~RA3 | YP 9 To | S °F | vos io [ or pve of | oz | UPa-fi2[ oa | Display RAM ii i 4h ii i MAg~MAg ii i ii i Ader e§§ Ao~Ats ii i 11] Voo | ii i Ra= 12k0 17] vss _| rt i pe I 4 rot i dike ad 2 VR= 100k 1 ot : GND SSS ee bene----- NC/LEDA. LED it @121¢B1P000_-—" | drivingcircuit tae NC/LEDC Figure 12 Interface Circuit With MSM6255GSK Features of the MSM6255GSK: @ Interface with 80-series MPU possible @ Cursor + ON/OFF + Blinking speed, form, and position are programmable ®@ Scrolling and paging @ CMOS process @ Powersupply voltage 5V +10% -15-

(2) SEIKO EPSON SED1330F/1335F MPU G121C00P000 G121CB1P000 Ss [2] reno _| R/W eg © ee a en ae feo E ter _ fe{ cr | Data be] 5, i ‘ bus oo), Gb voy-vo7 | xb; >} 2+ 00 oe | *2 [03 | Display RAM VR/W i i i it ii i ! ! ! VAg~VAis tot ! 11 | Vop | i i i Rex 12k0 pve] tot i DC power suppl: ii i poms supply ZVR= 100k ii i “Y 3 [ vic | ee s cn =U Lia vo | -24av penne eee ' ; | 16 | NC/LEDA | i LED driving circuit Poocooer n> 16 | NCILEDA Figure 13 Interface Circuit With SED1330F/SED1335F Features of the SED1330F/1335F: @ Interface with 80-series or 68-series MPU possible © Built-in character generator ROM: 160 kinds @ External character generator - + CG RAM: (8x 16 dot matrix) x 64 kinds + CG ROM : (8 x 16 dot matrix) x 256 kinds @ Layered mode : AND, OR, XOR, “preferred” OR @ CMOS process @ Scrolling (vertical and horizontal) @ Power supply voltage 5V 410% (SED1330F) 2.7 to 5.5 V (SED1335F) -16-

AAN.ING.G 12100-2025 (3) HITACHI HD64646FS _ HDstessrs G121C00P000 oe [2 | FGND | PBo~ PB Ps [a bus r CcL2 [ cose | L—fa [inn] va] hv Tar} ie. ote ar | 4p peecoh> MDg~MDyg rel i fof | | | Pte He pane MDo~MD7 ee ii i cs | A Pi s | || lcs nom KJ RAgr~RAg 7 ii i MAg~MA, ii i ii i RS poi i ! ! ! aoe i i i Raz 12ka pot i ! ! ! avin nea bus Sree isk | fev Ag Mss | DC power supply H to[ 16 | NCLEDA 75V 1 LED driving circuit NO/LEDC 1 1 GND teoooeganecccnns pay \\__G121¢81P000 Figure 14 Interface Circuit With HD64646FS Features of the HD64646FS: © Interface with 80-series MPU possible © Character font @ Layered mode : OR (character and + Vertical : 1 to 32 dots graphics) + Horizontal : 8 dots @ Character reverse, blinking, all black, all ®@ Scrolling white + Vertical : smooth or character unit © Cursor + Horizontal : character unit + ON/OFF @ CMOS process + Blinking speed, form and position are @ Powersupply voltage 5V+10% programmable -W7-

1. LED BACKLIGHT (G121CB1P000)

3.1 Absolute Maximum Ratings

De forwardcurrent [ie [00 | ma Dereversevoltage | va | BT Allowabledissipation [Pp | 950 | mw Operating temp. range Storage temp. range - 30 to +80 * Forward current reduction characteristics: The absolute maximum rating of the forward current varies depending on ambient temperature. 200 ’ Ip(mA) fi t -20 25 70 Ta(c)

3.2 Electrical and Optical Characteristics

= 25° [wm [av [eos conon [win [ tye [ wx [unt | | Forwardvoitage | ve | te=t0oma_ | 37 | 41 | as | v_ | [_Reversecurrent_ | Ie [ vazsv_ [ - | - | 300 | AA |

3.3 LED Backlight Connection Diagram

chips = 20 LEDC

3.4 Brightness (panel upper side)

[tem oem | win | om | Moe [ot Surface brightness | (Center of LCD panel) 1.0 17 nit Measurement conditions and a measuring instrument are: * Tas 25°C 43°C * 30% to 85%RH + Ip= 100 mA * ferm= 70 Hz * Vic = Optimum LC drive voltage * Display OFF (Entire display data = “L”) * Measured 30 minutes after LED lights + Measuring instrument: BM - 7 (TOPCON) - 18-

3.5 Lifetime

ifetime* Ta=25°C + 10°C $0,000 ormore | me | * Definition of lifetime: The time until the brightness decreases to half of the initial brightness.

3.6 Examples of LED Backlight Drivers

(1) Example 1 Abasic LED backlight driver example is shown in Figure 15. R= 330, (2 1/4W) LEDA = (2 VV Vin= +5V VV LEDC G121C Figure 15 LED Backlight Driver Example 1 Where resistance “R” is the limit resistance of the LED forward current. The forward current depends upon the temperature. Especially, it must be decreased at high temperature. For temperature dependence, refer to forward current reduction characteristics described in 3.1. The operating temperature for the G121C ranges from — 20°C to + 70°C. It is necessary to determine limit resistance “R” so that the forward current becomes 50 mA or lower at + 70°C. Forward voltage V- at each temperature of the LED backlight is shown in Table 5. Table5 Forward Voltage At Temperatures Temperature (Ta) Vetye. [asc | e=tooma [ary | atv | as Limit resistance “R” is calculated using the following equation. The resistance becomes the value shown in Figure 15. - Vin = Input voltage (power voltage)(V) R= —Vin=Ve (a) Vp =LED forward voltage (V) Ie lp =Allowable LED forward current (A) For this resistance value, the forward current becomes lower than 50 mA at 25°C. The surface brightness of the LED backlight varies with the forward current. See Figure 16. Compared with 3.4 brightness (Ip = 100 mA), the brightness is about 30%. -19- :

brightness °* 08 : 0.6 :

1 DAB ccceccreeseey i

0.4 : : 30 40 50 60 70 80 90 100 110 Forward current: I-(mA) Figure 16 Forward Current-Brightness Characteristics (Ta = 25°C) (2) Example 2 When you want to keep the brightness (2 nit) at 25°C, use a thermosensitive element, like a thermistor, and a transistor as shown in Figure 17. Set the thermosensitive element to about Ip = 100 mA at 25°C and configure it so that “Ir” will be reduced as the temperature rises. AY, VV Re LEDC vin (oO G121C Kc) Tr R3 : Thermistor Figure 17 LED Backlight Driver Example 2 -20-

4, PRECAUTIONS Safety + Ifthe 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. + Ifthe liquid crystal should get in your eye, flush your eye with running water for at least fifteen minutes. . + Ifthe liquid crystal touches your skin or clothes, remove it and wash the affected part of your skin or clothes with soap and running water. + 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 it will damage the CMOS LSI. + The LCD panel is made of plate glass. Do not hit , crush, or bend it. + Do not remove the panel or frame from the module. + The polarizer of the display is very fragile. Handle it with care. Mounting and design + Mount the module using the specified mounting parts and holes. + To protect the module against external pressure, place a transparent plate (e.g., acrylic or glass) on the module, leaving a small gap between the display surface and transparent plate. trExample Small gap Exterior face Transparent plate 4 Pp a — OS CI A | a a | Se | _ Oo _scew + Keep the module dry. Avoid condensation to prevent the transparent electrodes from being damaged. Storage + Store the module ina dark place, where the temperature is 25°C + 10°C and the relative humidity is below 65%. + Donot store the module near organic solvents or corrosive gases. + Keep the module (including accessories) safe from vibration, mechanical shock and external pressure. + 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. + Donotuse ketonic (ketone) solvents (ketone and acetone) or aromatic solvents (toluene and xylene), as they may damage the polarizer. -21-

“Ae -B- -<c Contrast 2.00... cece cc cece cece cece cece ene t teen eet e teen eneeteeteeteeeeeee BA -D- -E- “Fe -H- ° le Interface 22... cece eect t eee e teeter nner teereeeeeeeteeneeenes TA

Lifetime 2.0... cece cece eee cette teen este eetteeteeeeeeeeeees 4,19 -M- ; -N- -O- Pp. -R- -S- StOrage 2... ce ete eee eect teen e eet e tet eeteteeteeteceseees 29 -T- . -V- Vopr CONtrol CircUit . 2... cee eee eee e eee ee ete eee eteteeeeeees 8, 10

Seiko Instruments Inc. . Head Office Components Sales Department 1-8, Nakase, Mihama-ku, Chiba-shi, Chiba 261, Japan Phone: 043-211-1216 FAX: 043-211-8035 Seiko Instruments U.S.A. Inc. Electronic Components Division 2990 W. Lomita Blvd., Torrance Calif. 90505, USA Phone: 310-517-7770 FAX: 310-517-7792 Seiko Instruments GmbH Siemensstrasse 9b, 63263 Neu-lsenburg, Germany Phone: 49-6102-297-0 FAX: 49-6102-297-222 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: 852-24218611 FAX: 852-24805479 Seiko Instruments Taiwan Inc. Phone: 886-2-563-5001 FAX: 886-2-521-9519 Seiko Instruments Singapore Pte. Ltd 2, Marsiling Lane Woodland New Town Singapore 2573 Phone: 65-2691370 FAX: 65-2699729