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az displays specifications for liquid crystal display customer approval part no. : ATM0280B23B (az displays) specv1.3 approval company chop customer comments az displays engineering approval designed by checked by approved by herbert
ATM0280B23B(az displays) tft module v1.3 az displays 1 revision record revision revision date page contents ver1.0 ver1.1 ver1.2 ver1.3 2015-01-13 2015-01-15 2015-01-23 2015-04-01 first issue modify dobule-side tape width modify bezel size modify double side tape dimensions
ATM0280B23B(az displays) tft module v1.3 az displays 2 contents 1. general specifications 2. pin assignment 3. operating specifications 4. optical specifications 5. reliability test 6. precaution for using lcm 7. mechanical drawing 8. package drawing 9. inspection specification
ATM0280B23B(az displays) tft module v1.3 az displays 3 1. general specifications item specification remark 1. lcd size 2.8 inch(diagonal) 2. driver element a-si tft active matrix 3. resolution 240x(rgb)x320 4. display mode normally white,transmissive 5. dot pitch (w*h) 0.18mm(w) x 0.18mm(h) 6. active area(w*h) 43.2mm(w) x 57.6mm(h) 7. module size (w*h) 50.0mm(w) x 69.2mm(h) x 2.5mm(d) note 1 8. surface treatment anit-glare 9. color arrangement rgb-stripe 10. driver ic ili9341 11. mpu interface 16-bit parallel 8080 interface 12. backlight power consumption 0.256w(typ.) 13. panel power consumption tbd 14. weight tbd 15. rohs rohs compliant note 1: please refer to mechanical drawing.
ATM0280B23B(az displays) tft module v1.3 az displays 4 2. pin assignment pin no. symbol function level note 1~4 db0~db3 data bus i/o 5 gnd ground p 6 4 iovcc power supply for i/o logic circuit p 7 cs chip select i 8 rs register select signal i 9 wr writer operation signal i 10 rd read operation signal i 11 nc no connection -- 12 x+ no connection -- 13 y+ -- 14 x- -- 15 y- -- 16 led_a power supply for backlight p 17 led_k1 the backlight ground p 18 led_k2 p 19 led_k3 p 20 led_k4 p 21 nc no connection -- 22 db4 data bus i/o 23~30 db8~db15 data bus i/o 31 reset reset signal i 32 vdd power supply for analog circuit p 33 iovcc power supply for i/o logic circui p 34 gnd ground p 35~37 db5~db7 data bus i/o i: input, o: output, p: power default: 16bit mode
ATM0280B23B(az displays) tft module v1.3 az displays 5 3. operating specification 3.1 absolute maximum ratings item symbol values unit remark min. max. power voltage vci/vddio -0.3 4.6 v operation temperature t op -20 70 oc storage temperature t st -30 80 oc led reverse voltage v r -1.2v each led note 2 led forward current i f 25 ma each led note 1 : the absolute maximum rating values of this product are not allowed to be exceeded at any times. should a module be used with any of the absolute maximum ratings exceeded, the characteristics of the module may not be recovered, or in an extreme case, the module may be permanently destroyed. note 2 : v r conditions: zener diode 20ma 3.2 typical operation conditions item symbol values unit remark min. typ. max. operating voltage vci 2.8 3.0 3.3 v io voltage iovcc 1.8 3.0 3.3 v note 1 input logic high voltage v ih 0.8iovcc -- iovcc v input logic low voltage v il vss -- 0.2iovcc v note 1 : iovcc setting should match the signals o utput voltage of customer?s system board.
ATM0280B23B(az displays) tft module v1.3 az displays 6 3.3 backlight driving conditions item symbol values unit remark min. typ. max. voltage for led backlight v l 3.0 3.2 3.4 v note 1 current for led backlight i l -- 60 -- ma led life time -- 30000 -- -- hr note 2 note 1 : the led supply voltage is defined by the number of led at ta=25 and i l =60ma. note 2 : the ?led life time? is defined as the module brightness decrease to 50% original brightness at ta=25 and i l =60ma.
ATM0280B23B(az displays) tft module v1.3 az displays 7 3.4 timing characteristics please refer to ic specification for detailed information.
ATM0280B23B(az displays) tft module v1.3 az displays 8 4.0 optical specifications item symbol condition values unit remark min. typ. max. viewing angle (cr 10) response time t on + t off normal contrast ratio cr 240 300 -- -- note 4 color chromaticity w x 0.302 0.322 0.342 -- note 2 note 5 note 6 w y 0.323 0.343 0.362 -- luminance l 120 150 -- cd/m 2 note 6 luminance uniformity yu 75 80 -- % note 7 test conditions: 1. vci=3.0v, il=60ma (backlight current), the ambient temperature is 25 . 2. the test systems refer to note 2. note 1 : definition of viewing angle range figure 4.1 definition of viewing angle.
ATM0280B23B(az displays) tft module v1.3 az displays 9 note 2 : definition of optical measurement system. the optical characteristics should be measured in dark room. after 30 minutes operation, the optical properties are measured at the center point of the lcd screen. (response time is measured by photo detector topcon figure 4.2 optical measurement system setup note 3 : definition of response time the response time is defined as the lcd optical switching time interval between ?white? state and ?black? state. rise time (ton) is the time between photo detector output intensity changed from 90% to 10%. and fall time (toff) is the time between photo detector output intensity changed from 10% to 90%. figure 4.3 definition of response.
ATM0280B23B(az displays) tft module v1.3 az displays 10 note 4 : definition of contrast ratio note 5 : definition of color chromaticity (cie1931) color coordinates measured at center point of lcd. note 6 : all input terminals lcd panel must be ground while measuring the center area of the panel. the led driving condition is i l =80ma . note 7 : definition of luminance uniformity active area is divided into 9 measuring areas (refer to fig. 4-4 ).every measuring point is placed at the center of each measuring area. figure 4.3 definition of measuring points. bmax: the measured maximum luminance of all measurement position. bmin: the measured minimum luminance of all measurement position.
ATM0280B23B(az displays) tft module v1.3 az displays 11 5. reliability test no.. test item description test condition r emark 1 high temperature storage endurance test applying the high storage temperature for a lon g time 80 ,240 h note 1 note 4 2 low temperature storage endurance test applying the low storage temperature for a lon g time -30 ,240h note 1 note 4 3 high temperature operation endurance test applying the electric stress under high temperature for a long time 60 ,96h note 2 note 4 4 low temperature operation endurance test applying the electric stress under low temperature fo r a long time -10 ,96h note 1 note 4 5 high temperature /humidity storage endurance test applying the high temperature and high humidity storage for a long time 50 90% r.h 240h note 4 6 high temperature /humidity operation endurance test applying electric stress under high temperature and high humidity fo r a long time 40 90% r.h 96h note 4 7 temperature cycle endurance test applying the low and high temperature cycle -20 25 70 25 30min 5min 30min 5min one cycle -20 /70 10 cycles 8 vibration test endurance test applying the vibration during transportation and using 10hz~50hz swing:0.75mm time:30min 9falltest endurance test dropping the lcm fro m a high place 600mm height 10 static electricity test endurance test applying static electric stress to terminal contact discharge: 2kv~4kv air discharge: 2kv~10kv note 1 : ta is the ambient temperature of samples. note 2 : ts is the temperature of panel?s surface. note 3 : in the standard condition, there shall be no practical problem that may affect the display function. after the reliability test, the product only guarantees operation, but don?t guarantee all of the cosmetic specification. note 4 : before cosmetic and function test, the product must have enough recovery time, at least 2 hours at room temperature.
ATM0280B23B(az displays) tft module v1.3 az displays 12 6. precaution for using lcm 1. when desi g nthe p roduct with this lcd module, make sure the viewin g an g le matches to its p ur p ose o f usa g e. 2. as lcd panel is made of glass substrate, dropping the lcd module or banging it against hard objects may cause cracking or fragmentation. especially at corners and edges. 3. a lthou g h the polarize r o f this lcd module has the anti- g lare coatin g ,alwa y s be careful not to scratch its surface. use of a plastic cover is recommended to protect the surface of polarizer. 4. i f the lcd module is stored at below specified temperature, the lc material ma y freeze and be deteriorated. i f it is stored at above specified temperature, the molecular orientation of the lc material may change to liquid state and it may not revert to its original state. excessive temperature and humidity could cause polarizer peel off or bubble. therefore, the lcd module should always be stored within specified temperature range. 5. saliva or water droplets must be wiped of f immediatel y as those ma y leave stains o r cause colo r chan g es if remained for a long time. water vapor will cause corrosion of ito electrodes. 6. if the surface of lcd panel needs to be cleaned, wipe it swiftly with cotton or other soft cloth. if it is not still clean enough, blow a breath on the surface and wipe again. 7. the module should be driven according to the specified ratings to avoid malfunction and permanent damage. applying dc voltage cause a rapid deterioration of lc material. make sure to apply alternating waveform by continuous application of the m signal. especially the power on/off sequence should be kept to avoid latch-up of driver lsis and dc charge up to lcd panel. 8. mechanical considerations a) lcm are assembled and adjusted with a high degree of precision. avoid excessive shocks and do not make any alterations or modifications. the following should be noted. b) do not tamper in any way with the tabs on the metal frame. c ) do not modif y the pcb b y drillin g extra holes, chan g in g its outline, movin g its components o r modif y in g its pattern. d ) do not touch the elastome r connector; especiall y insert a backli g ht panel ( fo r example, el ) . e ) when mountin g a lcm makes sure that the pcb is not under an y stress such as bendin g o r twistin g . elastomer contacts are very delicate and missing pixels could result from slight dislocation of any of the elements. f ) a void pressin g on the metal bezel, otherwise the elastomer connecto r could be deformed and lose contact, resulting in missing pixels. 9. static electricit y a) operator wear the electrostatics shielded clothes because human body may be statically charged if not ware shielded clothes. never touch any of the conductive parts such as the lsi pads; the copper leads on the pcb and the interface terminals with any parts of the human body. b ) equipment there is a possibility that the static electricity is charged to the equipment, which has a function of peeling or friction action (ex: conveyer, soldering iron, working table). earth the equipment through proper resistance (electrostatic earth: 1x10 8 ohm). only properly grounded soldering irons should be used. if an electric screwdriver is used, it should be well grounded and shielded from commutator sparks. the normal static prevention measures should be observed for work clothes and working benches; for the latter conductive (rubber) mat is recommended. c) floor floor is the important part to drain static electricity, which is generated by operators or equipment. there is a possibility that charged static electricity is not properly drained in case of insulating floor. set the electrostatic earth (electrostatic earth: 1x10 8 ohm). d ) humidit y proper humidity helps in reducing the chance of generating electrostatic charges. humidity should be kept over 50%rh. e ) transportation/stora g e the storage materials also need to be anti-static treated because there is a possibility that the human body or storage materials such as containers may be statically charged by friction or peeling. the modules should be kept in antistatic bags or other containers resistant to static for storage. f ) solderin g solder only to the i/o terminals. use only soldering irons with proper grounding and no leakage. soldering temperature : 280 e c f 10 e c soldering time: 3 to 4 sec. use eutectic solder with resin flux fill. if flux is used, the lcd surface should be covered to avoid flux spatters. flux residue should be removed afterwards. g) others
ATM0280B23B(az displays) tft module v1.3 az displays 13 the laminator (protective film) is attached on the surface of lcd panel to prevent it from scratches or stains. it should be peeled off slowly using static eliminator. static eliminator should also be installed to the workbench to prevent lcd module from static charge. 10. operation a ) drivin g volta g e should be kept within specified ran g e; excess volta g e shortens displa y life. b ) response time increases with decrease in temperature. c) display may turn black or dark blue at temperatures above its operational range; this is (however not pressing on the viewing area) may cause the segments to appear ?fractured?. d ) mechanical disturbance durin g operation ( such as pressin g on the viewin g area ) ma y cause the se g ments to appear ?fractured?. 11. i f an y fluid leaks out o f a dama g ed g lass cell, wash off an y human part that comes into contact with soap and water. the toxicity is extremely low but caution should be exercised at all the time. 12. disassemblin g the lcd module can cause permanent dama g e and it should be strictl y avoided. 13. lcd retains the display pattern when it is applied for long time (image retention). to prevent image retention, do not apply the fixed pattern for a long time. image retention is not a deterioration of lcd. it will be removed after display pattern is changed. 14. do not use an y materials, which emit g as from epox y resin ( hardener for amine ) and silicone adhesive a g ent (dealcohol or deoxym) to prevent discoloration of polarizer due to gas. 15. avoid the exposure of the module to the direct sunlight or strong ultraviolet light for a long time. the brightness of lcd module may be affected by the routing of ccfl cables due to leakage to the chassis through coupling effect. the inverter circuit needs to be designed taking the level of leakage current into consideration. thorough evaluation is needed for lcd module and inverter built into its host equipment to ensure specified brig htness.
ATM0280B23B(az displays) tft module v1.3 az displays 14 7. mechanical drawing 0$; xr yd xl yu " f f f " f : f f 3 f xr yd xl yu /&'$$ /&' /&'$$ /&' /&' f%/ f%/ no including dst f f " f f /('&,5&8,7',$*5$0 . . . . $ f f
ATM0280B23B(az displays) tft module v1.3 az displays 15 8. package drawing t.b.d. 9. inspection specification t.b.d.

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