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specification for lcd module model no. tm 1281 28 ckfwg1 prepared by: date: checked by : date: verified by : date: approved by: date: tianma microelectronics co., ltd ver . 1.0
1 /22 revisio n record date ver. ref. page revision no. revision items
2 /22 1 . general specifications: 1.1 display type: c olor stn 1.2 display color* 1 : display color: 65k color background* 2 : black (re d, green, blue dots are off state) 1.3 polarizer mode: trans missive / nega tive 1.4 viewing angle: 6 :00 1.5 driving method : 1/ 1 28 duty 1/ 5 bias 1.6 backlight type: led (3 lamps) backlight color: white 1.7 controller : s6b33b0a03-bocy 1.8 data transfer: spi, 8 bit parallel or 16 bit parallel 1.9 operating temperature: - 20 ----+ 70 ?? storage temperature: - 30 ----+ 80 ?? 1.10 power supply voltage : vdd= 3 .0v 1.11 lcd operating voltage: vlcd= 10 .6 v 1 .12 outline dimensions: refer to outline drawing on next page 1.13 dot matrix: 128 x 3 (rgb) x 128 dots 1.14 dot size: 0. 189(r+g+ b)?0. 205(mm 2 ) 1.1 5 dot pitch: 0. 2 04?0. 2 20 (mm 2 ) 1.1 6 weight: tbd* 3 * 1 color tone is slightly changed by temperature and driving voltage. * 2 color tone will be changed by backlight. * 3 tbd: to be determined.
3 /22 2 . outline drawing
4 /22 3 . lcd module part numbering system tm 1281 28 c k f w g 1 modification code designator ic package g : cog temprature range w: wide temperature range backlight type f : transmiss ive, led backlight lcd type k: c olor stn mode nega tive module series module type digits indicating : 128 (rgb) columns x 1 28 rows t: tianma m: module
5 /22 4 . ci rcuit block diagram
6/22 5 . absolute maximum ratings ta= 25 ?? item symbol min. max. unit remark power supply voltage v dd - v ss - 0.3 + 4.0 lcd driving voltage vlcd tbd 22 v operating temperature range t op -2 0 + 7 0 storage temperature range t st - 3 0 + 8 0 ?? no condensation
7/22 6 . electric al specifications and instruction code 6.1 electrical characteristics vss= 0v , ta= 25 ?? item symbol min. typ. max. unit supply voltage (logic) v dd - vss +1.8 +3.0 +3.3 v supply voltage (lcd drive) v lcd - 1 0.6 - v high v ih ? v dd = 3 .0 ? 0.8v dd - v dd v input signal voltage low v il ? v dd = 3 .0 ? 0 - 0.2 v dd v supply current (logic) i dd (v dd - v ss = 3.0 v) - - 2.5 m a operating current i op - - 20 ma oscillator frequency range f osc 84.48 - 288 khz supply voltage ( led ) v led - 9.9 - v supply current ( led ) i led 15.0 18.0 ma
8 /22 6.2 interface signals 6.2.1 c n1 pin no. symbol leve l description 1 nc 2 nc 3 ps h/l mpu interface select pin 4 mpu1 h/l mpu interface select pin 5 mpu2 h/l mpu interface select pin 6 cs1b h/l chip select input pins ( l : active ) 7 resetb h/l reset pin: low active 8 rs h/l data / instruction select input pin 9 wrb h/l read / write execution control pin 10 rdb h/l read / write execution control pin 11 d0 h/l data bus bit 0 12 d 0 1 h/l data bu s bit 1 13 d 0 2 h/l data bus bit 2 1 4 d03 h/l data bus bit 3 1 5 d04 h/l data bus bit 4 1 6 d05 h/l data bus bit 5 1 7 d06 h/l data bus bit 6 1 8 d07 h/l data bus bit 7 19 d08 h/l data bus bit 8 20 d09 h/l data bus bit 9 21 d10 h/l data bus bit 10 22 d11 h/l data bus bit 11 23 d12 h/l data bus bit 1 2 24 d1 3 h/l data bus bit 1 3 25 d1 4 h/l data bus bit 1 4 26 d1 5 h/l data bus bit 1 5 27 vss 0v ground
db0 to db7 (write) db0 to db7 (read) t dh80 t od80 t ds80 t acc80 0.9v dd 0.1v dd t pwl80(r) , t pwl80(w) t cy80 t ah80 t as80 /rd, /wr /cs1 (cs2) d/i t pwh80(r) , t pwh80(w) ** t pwl80(w) and t pwl80(r) is specified in the overlapped period when cs1b is low (cs2 is high) and /wr(/rd) is low. parallel interface (8080-series mpu) timing diagram 9/22 pin no. symbol level description 28 vdd 3.0v logic circuit power supply 29 vrn lcd common low selected driving voltage output pin 30 vrp lcd common high selected driving voltage output pin 31 nc 32 nc 33 nc 6.2.2 cn2 pin no. symbol level description c cathode 0v led cathode a anode 9.9v led anode 6 .3 interface timing ch art
instruction table instruction name d/i wrb rdb db15 ~ db8 db7 db6 db5 db4 db3 db2 db1 db0 hex. parameter non operation 0 0 1 * 0 0 0 0 0 0 0 0 00 oscillation mode set 0 0 1 * 0 0 0 0 0 0 1 0 02 1byte driver output mode set 0 0 1 * 0 0 0 1 0 0 0 0 10 1byte dc-dc select 0 0 1 * 0 0 1 0 0 0 0 0 20 1byte bias set 0 0 1 * 0 0 1 0 0 0 1 0 22 1byte dcdc clock division set 0 0 1 * 0 0 1 0 0 1 0 0 24 1byte dcdc and amp on/off set 0 0 1 * 0 0 1 0 0 1 1 0 26 1byte temperature compensation set 0 0 1 * 0 0 1 0 1 0 0 0 28 1byte contrast control(1) 0 0 1 * 0 0 1 0 1 0 1 0 2a 1byte contrast control(2) 0 0 1 * 0 0 1 0 1 0 1 1 2b 1byte standby mode off 0 0 1 * 0 0 1 0 1 1 0 0 2c - standby mode on 0 0 1 * 0 0 1 0 1 1 0 1 2d - ddram burst mode off 0 0 1 * 0 0 1 0 1 1 1 0 2e - ddram burst mode on 0 0 1 * 0 0 1 0 1 1 1 1 2f - addressing mode set 0 0 1 * 0 0 1 1 0 0 0 0 30 1byte row vector mode set 0 0 1 * 0 0 1 1 0 0 1 0 32 1byte n-line inversion set 0 0 1 * 0 0 1 1 0 1 0 0 34 1byte entry mode set 0 0 1 * 0 1 0 0 0 0 0 0 40 1byte x-address area set 0 0 1 * 0 1 0 0 0 0 1 0 42 2byte y-address area set 0 0 1 * 0 1 0 0 0 0 1 1 43 2byte ram skip area set 0 0 1 * 0 1 0 0 0 1 0 1 45 1byte display off 0 0 1 * 0 1 0 1 0 0 0 0 50 - display on 0 0 1 * 0 1 0 1 0 0 0 1 51 - specified display pattern set 0 0 1 * 0 1 0 1 0 0 1 1 53 1byte partial display mode set 0 0 1 * 0 1 0 1 0 1 0 1 55 1byte partial display start line set 0 0 1 * 0 1 0 1 0 1 1 0 56 1byte partial display end line set 0 0 1 * 0 1 0 1 0 1 1 1 57 1byte area scroll mode set 0 0 1 * 0 1 0 1 1 0 0 1 59 4byte scroll start line set 0 0 1 * 0 1 0 1 1 0 1 0 5a 1byte set display data length x x x * 1 1 1 1 1 1 0 0 fc 1byte display data write 1 0 1 display data write - - display data read 1 1 0 display data read - - status read 0 1 0 0 status data read - - test mode1 0 0 1 * 1 1 1 1 1 1 1 1 ff - test mode2 0 0 1 * 1 1 1 1 1 1 1 0 fe - test mode3 0 0 1 * 1 1 1 1 1 1 0 1 fd - test mode4 0 0 1 * 1 1 1 1 1 0 1 1 fb - test mode5 0 0 1 * 1 1 1 1 1 0 1 0 fa - test mode6 0 0 1 * 1 1 1 1 1 0 0 1 f9 - *: don?t care 10/22 6 . 4 i n s t r u c t i on code
11/22 7 . optical characteristics 7 .1 optical characteristics v lcd = 10.6v ta=25?? item symbol condition min. typ. max. unit | x | y = 0 ?? - 4 0 -- + 35 viewing angle | y c r =2 | x = 0 ?? - 30 -- + 30 deg contrast ratio c r | x = 0 ?? | y = 0 ?? 30 - - turn on t on - - 200 r es ponse time turn off t off | x = 0 ?? | y = 0 ?? - - 100 ms x - 0.43 - cd/m 2 red y | x = 0 ?? | y = 0 ?? - 0.35 - x - 0.32 - cd/m 2 green y | x = 0 ?? | y = 0 ?? - 0.46 - x - 0.22 - cd/m 2 color o f cie c oord - i nate blue y | x = 0 ?? | y = 0 ?? - 0.26 -
12/22 7 .2 definition of optical characteristics 7 .2.1 definition of viewing angle top top bottom bottom 7 .2.2 definition of co ntrast ratio brightness state selected brightness state unselected = b2/b1 = ratio contrast measuring conditions: 1) ambient temperature: 25 ?? ; 2) frame frequency: 70 .0 hz 7 .2.3 definition of response time turn on time: t on = t d + t r turn off time: t off = t d + t f measuring condition: 1) operating voltage:10.6v 2) frame frequenc y: 70.0hz
13/22 7.3 brightness characteristic item symbol condition m in. typ. max. unit brightness bp 80 - - cd/m 2 uniformity ? bp ta=25 ?? 3 ?? 30 - 80%rh 70 - - % no te : 1. the data is measured after leds are turned on for 5 minutes. 2. testing conditions led: vled = 9.9 v (dc) lcd: all dots are on (white color) 3. brightness in the center of the lcd panel. 4. definition of uniformity ( ? bp ) ? bp = bp (min.) / bp (max.) x 100 (%) bp (max.) = maximum brightness in 9 measurement spots bp (min.) = minimum brightness in 9 measurement spots
18 /2 5 8 . reliability 8 .1 content of reliability test ta=25 ?? no. test item content of test test condition 1 high temperature storage endurance test applying the high storage temperature for a long time 80 ?? 240 h 2 low temperature storage endurance test applying the low storage temperature for a long time -30?? 2 40 h 3 high temperature operation endurance test applying the electric stress (voltage | current) and the thermal stress to the element for a long time 70?? 240h 4 low temperature operation endurance test applying the electric stress under low temperature for a long time -20?? 240h 5 high temperature /humidity storage endurance test applying the high temperature and high humidity storage for a long time 65 ?? 90%rh 240h 6 temperature cycle endurance test applying the low and high temperature cycle - 4 0 ????? 25 ????? 8 5 ????? 25 ?? 30min 5min 30min 5min ??????????????? 1 cycle - 4 0 ?? / 85 ?? 10 cycles 7 vibration test (package state) endurance test applying the vibration during transportation 10hz~ 150 hz, 100 m/s 2 , 120 min 8 shock test (package state) endurance test applyin g the shock during transportation half - sine wave, 300 m/s 2 , 1 8 ms 9 atmospheric pressure test endurance test applying the atmospheric pressure during transportation by air 25 kpa 16h
15/22 8 .2 failure judgment criterion test item no. criterion item 1 2 3 4 5 6 7 8 9 failure judgement criterion basic specification v v v v v v v v v out of the basic specification electrical specification v v v v v out of the electrical specification mechanical specification v v out of the mechanical specification optical characteristic v v v v v v v out of the opt ical specification note for test item refer to 8 .1 remark basic specification = optical specification + mechanical specification
16/22 9. quality level inspection examination or test at t a =25 ?? (unless otherwise stated) min. max. unit il aql external visual inspection under normal illumination and eyesight condition, the distance between eyes and lcd is 25cm. see appendix a ii major 1.0 minor 2.5 display defects under normal illumination and eyesight condition, display on inspec tion. see appendix b ii major 1.0 minor 2.5 note: major defects: open segment or common, short, serious damages, leakage miner defects: others sampling standard conforms to gb2828
17/22 10 . precautions for use of lcd modules 1 0 .1 handling precautions 10 .1.1 the display panel is made of glass. do not subject it to a mechanical shock by dropping it from a high place, etc. 10 .1.2 if the display panel is damaged and the liquid crystal substance inside it leaks out, be sure not to get any in your mouth, if the substance comes into contact with your skin or clothes, promptly wash it off using soap and water. 10 .1.3 do not apply excessive force to the display surface or the adjoining areas since this may cause the color tone to vary . 10 .1.4 the polarizer covering the display surface of the lcd module is soft and easily scratched. handle this polarizer carefully. 10 .1.5 if the display surface is contaminated, breathe on the surface and gently wipe it with a soft dry cloth. if still not completely clear, moisten cloth with one of the following solvents: ?a isopropyl alcohol ?a ethyl alcohol solvents other than those mentioned above may damage the polarizer. especially, do not use the following: ?a water ?a ketone ?a aromatic solvents 10 .1.6 do not attempt to disassemble the lcd module. 10 .1.7 if the logic circuit power is off, do not apply the input signals. 10 .1.8 to prevent destruction of the elements by static electricity, be careful to maintain an opt imum work environment. a. be sure to ground the body when handling the lcd modules. b. tools required for assembly, such as soldering irons, must be properly ground. c. to reduce the amount of static electr icity generated, do not conduct assembly and other work under dry conditions. d. the lcd module is coated with a film to protect the display surface. be care when peeling off this protective film since static electricity may be generated.
18/22 10.2 storage precautions 10.2.1 when storing the lcd modules, avoid exposure to direct sunlight or to the light of fluorescent lamps. 10.2.2 the lcd modules should be stored under the storage temperature range. if the lcd modules will be stored for a long time, the recommend condition is: temperature : 0 ?? ?? 40 ?? relatively humidity: ? 80% 10 .2.3 the lcd modules should be stored in the room without acid, alkali and harmful gas. 10 .3 the lcd modules should be no falling and violent shocking during tra nsportation, and also should avoid excessive press, water, damp and sunshine.
19/22 appendix a inspection items and criteria for appearance defects items contents criteria leakage not permitted rainbow according to the limi t specimen wrong polarizer attachment not permitted not counted max. 3 defects allowed polarizer bubble between polarizer and glass f <0.3mm 0.3mm ? f ? 0.5mm scratches of polarizer according to the limit specimen not counted max. 3 spots allowed x<0.2mm 0.2mm ? x ? 0.5mm black spot (in viewing area) x=(a+b)/2 not counted max. 3 lines allowed black line (in viewing ar ea) a<0.02mm 0.02mm ? a ? 0.05mm b ? 2.0mm max. 3 spots (lines) allowed progressive cracks not permitted
20/22 appendix a inspection item and criteria for appearance defects (continued) items contents criteria a b c ? 3mm ? w/5 ? t / 2 cracks on pads ? 2mm ? w/5 t/2 21/22 appendix b inspection items and criteria for display defects items contents criter ia open segment or open common not permitted short not permitted wrong viewing angle not permitted contrast radio uneven according to the limit specimen crosstalk according to the limit specimen not cou nted max.3 dots allowed x<0.1mm 0.1mm ? x ? 0.2mm x=(a+b)/2 not counted max.2 dots allowed pin holes and cracks in segment (dot) a<0.1mm 0.1mm ? a ? 0.2mm d<0.25mm max.3 dots allowed not counted max.3 spots allowed x<0.1mm 0.1mm ? x ? 0.2mm black spot (in viewing area) x =(a+b)/2 not counted max.3 lines allowed black line (in viewing area) a<0.02mm 0.02mm ? a ? 0.05mm b ? 0.5mm max.3 spots (lines) allowed
22/22 appendix b inspection items and criteria for display defects (continued) items content criteria not counted max. 2 defects allowed x ? 0.1mm 0.1mm ? x ? 0.2mm x=(a+b)/2 not counted max. 1 defects allowed a ? 0.1mm 0.1mm ? a ? 0.2mm d>0 max.3 defects allowed transfor - mation of s egment max.2 defects allowed 0.8w ? a ? 1.2w a=measured value of w idth w=nominal value of width

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