综合介绍wym12832k4一致性0000

CONTENTS

Scope

Warranty

Typenumberanddescription

LCDmodulenumberingsystem

Mechanicalspecifications

Interfacepinsassignment

Electricalblockdiagram

Powersupplyapplication

Maximumabsolutelimit

Electricalcharacteristics

Displaycontrolinstruction

Electro-opticalCharacteristics

Reliability

Inspectioncriteria

PrecautionsforusingLCM

Scope

ThisspecificationdefinesgeneralprovisionaswellasinspectionstandardsforLCDmodulesuppliedbyWAYING(HongKong)SharesLimited.

Iftheeventofunforeseenproblemorunspecifieditemsmayoccur,pleasecontactthenearestsupplierorourcompany.

Warranty

Moduleproductsmanufacturedtothisspecificationwillbecapableofmeetingallthecharacteristicsforaminimumperiodof12months,whichcalculatesfromthedateofshippingfromWAYING(HongKong)SharesLimited.During.which,lessthan2%ofthemodulesmayfail(parametersoutofspecifications)underthespecifiedconditions.Alltheproductsshouldbestoredorusedasspecifiedconditionsdescribedinthesesheets.

Ifmoduleproductsarenotstoredorusedasspecifiedconditions,herein,itwillbevoidthe12monthswarranty.UsefullifeofLCDwillbemorethan100,000hoursunderanycombinationofoperatingandstorageduration.

Typenumberanddescription

Typenumber: WYM12832K4-GYFSESYN-0000

Dotsformat: 128X32dots

Drivermethod: 1/65duty, 1/9bias

Displaytype: STN,Yellow-Green,positive

Viewingangle: 6:00

Operatingtemperature: -200C~700C

Storagetemperature: -300C~800C

Controller/Driver: SPLC502B

Backlighttype: Yellow-Green,side

VDD: 3.0~3.3V

Backlightvoltage: 3.3V

Defaultsettings: 6800 (可以通过R1-R4修改串口，8080并口)

LCDmodulenumberingsystem

Mechanicalspecifications

Item

Standardvalue

UNIT

Outlinedimensions

75.0X41.5X10.3

MM

Viewingarea

58.5X18.0

MM

Ativearea

56.3X16.6

MM

Dotsize

0.4X0.48

MM

Dotspitch

0.44X0.52

MM

Charactersize

\

MM

Characterspitch

\

MM

Interfacepinsassignment

PIN

Symbol

Description

1

VSS

Powerground.

2

VDD

Powersupply+(3.3V)

3

NC

Noconnection

4

DB7(SI)

5

DB6(SCL)

6

DB5

7

DB4

8

DB3

9

DB2

10

DB1

11

DB0

12

E(/RD)

13

R/W(/WR)

14

A0

15

/RES

16

/CS

17

NC

Noconnection

18

NC

Noconnection

19

A

Backlightpowersupply+(3.3V).

20

K

Backlightpower-.

Electricalblockdiagram

Powersupplyapplication

Maximumabsolutelimit

Electricalcharacteristics

DCCharacteristics

Backlightpowersupply

Item

mark

min

Typ.

max

unit

BLvoltage

Vbl

3.0

3.2

3.4

V

BLelectricity

Ibl

30

45

60

ma

Displaycontrolinstruction

推荐初始化参数：MOVCOM,#0A2H

LCALLWRCOM ; 匹配硬件的设置，硬件就是1/33DUTY,1/6BIAS.

MOVCOM,#0A0H

LCALLWRCOM ;扫描列的顺序，屏是从S0-S127依次排列，所以按照正常顺序扫描。

MOVCOM,#0C8H

LCALLWRCOM ;行扫描顺序设置，屏幕首行是COM63，所以设置扫描顺序反过来。

MOVCOM,#0A6H

LCALLWRCOM ; 正常显示，改变这个参数可以反显显示内容.

MOVCOM,#21H ; 20H~27H，对比度粗调，调节范围大。

LCALLWRCOMMOVCOM,#81H

LCALLWRCOM

MOVCOM,#028H ; 00H~3FH，对比度细调，从而达到最佳对比度。

LCALLWRCOMLCALLDELAY0

MOVCOM,#2CHLCALLWRCOM

MOVCOM,#2EHLCALLWRCOM

MOVCOM,#2FH

LCALLWRCOM ;2C,2E,2F,依次打开芯片内部DC-DC电路，使用内部升压。

MOVCOM,#0A4HLCALLWRCOM

MOVCOM,#0AFH

LCALLWRCOM ; 打开显示

Electro-opticalCharacteristics

Item

Symbol

Condition

StandardValue

Unit

Min.

Typ.

Max.

ViewingAngle

θx

Cr≥2

θy=0°

-30

-

30

Deg

θy

θx=0°

-15

-

30

ContrastRatio

Cr

θx=0°

-

4

-

θy=0°

Brightness

B

θx=θy=0°

cd/m2

Respons

eTime

Turnon

Ton(Tu)

θx=0°

θy=0°

-

150

300

ms

Turnoff

Toff(Td)

-

180

330

DefinitionofElectro-opticalCharacteristicsDefinitionofViewingAngle

TOP TOP

Z θy

Y

-22-

Z

Y θx

X X

DefinitionofContrastRatio

PositiveDisplay NegativeDisplay

Brightness

ContrastRatio = Unselectedstatebrightness

Curveofselected

Curveofunselected

V

Definitionofre

V0

timewaveform

MeasuringConditions

s

BB2

B1

AmbientTemperature:25℃Framefrequency:60Hzθx=θy=0°

PositiveDisplay NegativeDisplay

Reliability

No

TestItem

ContentofTest

TestCondition

EnvironmentTest

1

High

TemperatureStorage

Endurance test of hightemperatureforalongtime.

80±2℃

72H

2

Low

TemperatureStorage

Endurance test of lowtemperatureforalongtime.

-30±2℃72H

3

HighTemperatureOperation

Endurancetestofelectricalstress(Voltage&Current)andthethermalstresstotheelement.

70±2℃

48H

4

HighTemperature

/Humidity

Storage

EnduranceTestofhightemperatureandhighhumidityforalongtime.

40±2℃

90±2%RH

96H

5

Thermalshock

Endurancetestoflowandhightemperaturecycles.(airtoair)

-30±2℃/80±2℃

10cycle

-30±2℃80±2℃

(60min)(60min)

1cycle

Note:1)Whenmakingthelowtemperaturetest,nottodewy.

2)Drivingconditionforoperationtest.

PowerSupplyVoltageforLogicSystem(VDD)=3.3VFailureJudgmentCriterion

Aftertheabovementionedtest.

(ForEnvironmentalTest,after2hoursinroomtemperature.)

Thereshouldnotbeconspicuousfailureofdisplayqualityandappearance.

Contrastratioshouldbe50%oftheinitialcontrastratio.

Thereshouldnothaveanyabnormalityoffunctions.

Inspectioncriteria

ModuleCosmeticCriteria

No.

Item

JudgementCriterion

Partition

1

DifferenceinSpec.

Noneallowed

Major

2

Patternpeeling

Nosubstratepatternpeelingandfloating

Major

3

Solderingdefects

NosolderingmissingNosolderingbridge

Nocoldsoldering

Major

MajorMinor

4

Resistflawonsubstrate

Invisiblecopperfoil(˘0.5mmormore)onsubstratepattern

Minor

5

AccretionofmetallicForeignmatter

Nosolderingdust

Noaccretionofmetallicforeignmatters(Notexceed

˘0.2mm)

MinorMinor

Stain

Platediscoloring

Solderamount

2.Flatpackages

Nostaintospoilcosmeticbadly

Noplatefading,rustinganddiscoloring

SolderingsideofPCBSoldertoforma‘Filet’allaroundthelead.

Soldershouldnothidetheleadformperfectly.(toomuch)

Componentsside

(Incaseof‘ThroughHolePCB’)

SoldertoreachtheComponentssideofPCB.

Either‘Toe’(A)or‘Seal’(B)oftheleadtobecoveredby‘Filet’.

Minor

MinorMinor

1.Leadparts

Minor

3.Chips

Leadformtobeassumeoversolder.

(3/2)H‡h‡(1/2)H

Minor

ScreenCosmeticCriteria(Non-Operating)

No.

Defect

JudgementCriterion

Partition

1

Spots

InaccordancewithScreenCosmeticCriteria(Operating)No.1.

Minor

2

Lines

InaccordancewithScreenCosmeticCriteria(Operating)No.2.

Minor

3

Bubbles

Inpolarizer

Minor

Size:d mm

AcceptableQtyinactivearea

d £0.3

0.3<d £1.0

1.0<d £1.5

1.5<d

Disregard3

1

0

4

Scratch

Inaccordancewithspotsandlinesoperatingcosmeticcriteria.Whenthelightreflectsonthepanelsurface,thescratchesare

nottoberemarkable.

Minor

5

Allowable

density

Abovedefectsshouldbeseparatedmorethan30mmeach

other.

Minor

6

Coloration

NottobenoticeablecolorationintheviewingareaoftheLCDpanels.

Back-littypeshouldbejudgedwithback-litonstateonly.

Minor

7

Contamination

Nottobenoticeable.

Minor

ScreenCosmeticCriteria(Operating)

No.

Defect

JudgementCriterion

Partition

1

Spots

Clear

Note:Includingpinholesanddefectivedotswhichmustbewithinonepixelsize.

Unclear

Minor

2

Lines

Clear

L5.0 (0)

¥

2.0 (6) SeeNo.1

W

Note: () 0.-0A2ccep0t.a0b5leQtyinactiv0e.1area

L-Length(mm)W-Width(mm)

¥-Disregard

B)Unclear

L10.0 (0)

¥

(6)

2.0 SeeNo.1

W

0.05 0.3 0.5

Minor

Size:d

mm

AcceptableQtyinactivearea

d

£

0.1

Disregard

0.1<d

£

0.2

6

0.2<d

£

0.3

2

0.3<d

0

Size:d

mm

AcceptableQtyinactivearea

d

£

0.2

Disregard

0.2<d

£

0.5

6

0.5<d

£

0.7

2

0.7<d

0

No.

Defect

JudgementCriterion

Partition

3

Rubbingline

Nottobenoticeable.

Minor

4

Allowable

density

Abovedefectsshouldbeseparatedmorethan10mmeachother.

Minor

5

Rainbow

Nottobenoticeable.

Minor

6

Dotsize

Tobe95%~105%ofthedotsize(Typ.)indrawing.

Partialdefectsofeachdot(ex.pin-hole)shouldbetreatedas‘spot’.

(seeScreenCosmeticCriteria(Operating)No.1)

Minor

‘Clear’ =TheshadeandsizearenotchangedbyVO.‘Unclear’=TheshadeandsizearechangedbyVO.

7

Unevenbrightness(onlyback-littypemodule)

UnevenbrightnessmustbeBMAX/BMIN£2

BMAX:Max.valuebymeasurein5points

BMIN:Min.valuebymeasurein5pointsDivideactiveareainto4verticallyandhorizontally.

:Measure5pointsshowninthefollowingfigure.

Minor

Note:

Size:d=(longlength+shortlength)/2

Thelimitsamplesforeachitemhavepriority.

Complexeddefectsaredefineditembyitem,butifthenumberofdefectsaredefinedinabovetable,thetotalnumbershouldnotexceed10.

Incaseof‘concentration’,eventhespotsorthelinesof‘disregarded’sizeshouldnotallowed.Followingthreesituationsshouldbetreatedas‘concentration’.

-7oroverdefectsincircleof˘5mm.

10oroverdefectsincircleof˘10mm.

20oroverdefectsincircleof˘20mm.

RECAUTIONFORUSINGLCM

LiquidCrystaldisplay(LCD)

LCDismadeupofglass,organicsealant,organicfluid,andpolymerbasedpolarizers.Thefollowingprecautionsshouldbetakenwhenhanding:

Keepthetemperaturewithinrangeofuseandstorage.Excessivetemperatureandhumiditycouldcausepolarizationdegredation,polarizerpeelofforbubble.

DonotcontacttheexposedpolarizerswithanythingharderthananHBpencillead.

Tocleandustoffthedisplaysurface.Wipegentlywithcotton.,Chamoisorothersoftmaterialsoakedinpetroleumbenzin.Ifthedisplaysurfacebecomescontaminated,breatheonthesurfaceandgentlywipeitwithasoftdrycloth.Ifitisheavilycontaminated,moistenclothwithoneofthefollowingsolvents:

Isopropylalcohol

Ethylalcohol

Solventsotherthanthoseabove-mentionedmaydamagethepolarizer.Especially,donotusethefollowing.

Water

Ketone

Aromaticsolvents

Wipeoffsalivaorwaterdropsimmediately.Contactwithwateroveralongperiodoftimemaycausepolarizerdeformationorcolorfading,whileanactiveLCDwithwatercondensationonitssurfacewillcausecorrosionofITOelectrodes.

Glasscanbeeasilychippedorcrackedfromroughhanding.especiallyatcornersandedges.

DonotdriveLCDwithDCvoltage.

Mechnicalconsiderations

LCMareassembledandadjustedwithahighdegreeofprecision.Avoidexcessiveshocksanddonotmakeanyalterationsormodifications.Thefollowingshouldbenoted.

Donottamperinanywaywiththetabsonthetabsonthemetalframe.

DonotmodifythePCBbydrillingextraholes,changingitsoutline,movingitscomponentsormodifyingitspattem.

Donottouchtheelastomerconnector,especiallyinsertanbacklightpanel(forexample,EL).

WhenmountingaLCMmakesurethatthePCBisnotunderanytresssuchasbendingortwisting.Elastomercontactsareverydelicateandmissingpixelscouldresultfromslightdislocationofanyoftheelements.

Avoidpressingonthemetalbezel,otherwisetheelastomerconnectorcouldbedeformedandlosecontact,resultinginmissingpiels.

StaticElectricity

LCMcontainsCMOSLSI’sandthesameprecautionforsuchdevicesshouldapply,namely

Theoperatorshouldbegroundedwheneverhe/shecomesintocontactwiththemodule.NevertouchanyoftheconductivepartssuchastheLSIpads,thecopperleadsonthePCBandtheinterfaceterminalswithanypartsofthehumanbody.

Themodulesshouldbekeptinantistaticbagsorothercontainersresistanttostaticforstorage.

Onlyproperlygroundedsolderingironsshouldbeused.

WhenusinganelectricscrewdrivertoattachLCM,thescrewdrivershouldbeofgroundpotentialitytominimizeasmuchaspossibleanytransmissionofelectromagneticwavesproducedsparkscomingfromthecommutatorofthemotor.

Thenormalstaticpreventionmeasuresshouldbeobservedforworkclothesandworkingbenches;forthelatterconductive(rubber)matisrecommended.

Toreducethegenerationofstaticelectricitybecarefulthattheairintheworkisnottoodried.Arelativehumidityof50%-60%isrecommended.

.(7)TheLCDmoduleiscoatedwithafilmtoprotectthedisplaysurface.Exercisecarewhenpeelingoffthisprotectivefilmsincestaticelectricitymaybegenerated.

Soldering

Observethefollowingwhensolderingleadwire,connectorcableandetc.totheLCM.

Solderingirontemperature:260C–10C.

Solderingtime:3-4sec.

Solder:eutecticsolder.

Ifsolderingfluxisused,besuretoremoveanyremainingfluxafterfinishingtosolderingoperation.(Thisdoesnotapplyinthecaseofanon-halogentypeofflux.)ItisrecommendedthatyouprotecttheLCDsurfacewithacoverduringsolderingtopreventanydamagedurtofluxspatters.

WhensolderingtheelectroluminescentpanelandPCboard,thepanelandboardshouldnotbedetachedmorethanthreetimes.Thismaximumnumberisdeterminedbythetemperatureandtimeconditionsmentionedabove,thoughtheremaybesomevariancedependingonthetemperatureofthesolderingiron.

WhenremovetheelectoluminescentpanelfromthePCboard,besurethesolderhascompletelymelted,thesolderedpadonthePCboardcouldbedamaged.

SolderingironisnotallowedtotouchthesurfaceofFPC’scoverfilmdirectly.

Operation

Viewinganglevarieswiththechangeofliquidcrystaldrivingvoltage(V0).AdjustV0toshowthebestcontrast.

Drivingvoltageshouldbekeptwithinspecifiedrange;excessvoltageshortensdisplaylife.

Responsetimeisgreatlydelayedattemperaturebelowtheoperatingtemperaturerange.However,thisdoesnotmeantheLCDwillbeoutoftheorder.Itwillrecoverwhenitreturnstothespecifiedtemperaturerange.

Displaymayturnblackordarkblueattemperaturesaboveitsoperationalrange;thisis(howevernotpressingontheviewingarea)maycausethesegmentstoappear“fractured”.

Ifthedisplayareaispushedhardduringoperation,thedisplaywillbecomeabnormal.However,itwillreturntonormalifitisturnedoffandthenbackon.

Whenturningthepoweron,inputeachsignalafterthepositive/negativevoltagebecomesstable.

InstallingLCDModules

TheholeintheprintedcircuitboardisusedtofixLCMasshowninthepicturebelow.AttendtothefollowingitemswheninstallingtheLCM.

CoverthesurfacewithatransparentprotectiveplatetoprotectthepolarizerandLCcell.

WhenassemblingtheLCMintootherequipment,thespacertothebitbetweentheLCMandthefittingplateshouldhaveenoughheighttoavoidcausingstresstothemodulesurface,refertotheindividualspecificationsformeasurements.Themeasurementtoleranceshouldbe–0.1mm.

SinceLCMhasbeenassembledandadjustedwithahighdegreeofprecision,avoidapplying

excessiveshockstothemoduleormakinganyalterationsormodificationstoit.

Donotalter,modifyorchangetheshapeofthetabonthemetalframe.

Donotmakeextraholesontheprintedcircuitboard,modifyitsshapeorchangethepositionsofcomponentstobeattached.

Donotdamageormodifythepatternwritingontheprintedcircuitboard.

Absolutelydonotmodifythezebrarubberstrip(conductiverubber)orheatsealconnector.

Exceptforsolderingtheinterface,donotmakeanyalterationsormodificationswithasolderingiron.

Donotdrop,bendortwistLCM.

InordertoavoidthecrackingoftheFPC,youshouldtopayattentiontotheareaofFPC(R50mm)wheretheFPCwasbent.theedgeofcoverlay;theareaofsurfaceofNi-Auplating,theareaofsolderingland,theareaofthroughhole.

StoragePrecautions

WhenstoringtheLCDmodules,avoidexposuretodirectsunlightortothelightoffluorescentlamps.

Thepolarizersurfaceshouldnotcomeincontactwithanyotherobjects.Keepthemodulesinbags.Wheneverpossible,theLCDmodulesshouldbestoredinthesameconditionsinwhichthe