 the common substrate with the phosphor. Thus such displays will have inadequate brightness, fill factor and/or pixel density for many applications. As mobile devices have been increasingly developed, and the demand for such mobile devices has increased, the demand for secondary batteries as an energy source has also sharply increased.
Depending upon kinds of external devices in which secondary batteries are used, the secondary batteries may be used in the form of a single battery or in the form of a battery pack having a plurality of unit cells electrically connected to one another. For example, small-sized devices, such as mobile phones, can be operated for a predetermined period of time with the power and the capacity of one battery. On the other hand, a battery pack including a plurality of batteries needs to be used in middle or large-sized devices, such as laptop computers, portable digital versatile disc (DVD) players, small-sized personal computers (PCs), electric vehicles, and hybrid electric vehicles, because high power and large capacity are necessary for the middle or large-sized devices.
Among secondary batteries, a lithium secondary battery is widely used since the lithium secondary battery has high power and large capacity.
However, various kinds of combustible materials are contained in the lithium secondary battery. As a result, the lithium secondary batter may be heated or explode due to overcharge of the lithium secondary battery, overcurrent in the lithium secondary battery, or other external physical impact applied to the lithium secondary battery. That is, the safety of the lithium secondary battery is very low.
Consequently, safety elements, such as a positive temperature coefficient (PTC) element and a protection circuit module (PCM), to effectively control an abnormal state of the lithium secondary battery, such as overcharge of the lithium secondary battery or overcurrent in the lithium secondary battery, are loaded on a battery cell in a state in which the safety elements are connected to the battery cell.
Generally, the PCM is electrically connected to the battery cell via conductive nickel plates by welding or soldering. That is, nickel plates are connected to electrode tabs of the PCB by welding or soldering, and the nickel plates are connected to electrode terminals of the battery cell by welding or soldering. In this way, the PCM is connected to the battery cell to manufacture a battery pack.
It is required for the safety elements, including the PCM, to be maintained in electrical connection with the electrode terminals of the battery cell and, at the same time, to be electrically isolated from other parts of the battery cell
the common substrate with the phosphor. Thus such displays will have inadequate luminosity, filling gene and/or pixel density for many application. As fluid devices have been increasingly developed, and the demand for such fluid device has increased, the requirement for secondary batteries as an department of energy source has also sharply increased. 
 depend upon kinds of external devices in which secondary batteries are used, the junior-grade batteries may be used in the form of a unmarried battery or in the form of a barrage pack accept a plurality of whole cells electrically connected to one another. For example, belittled - sized devices, such as mobile phones, can be operated for a predetermined period of time with the power and the capacity of one battery. On the other hand, a battery pack including a plurality of batteries necessitate to be used in middle or big - sized device, such as laptop computers, portable digital versatile disc (DVD) players, small - sized personal computer (PCs), electric vehicles, and hybrid electric vehicles, because high baron and large capacity are necessary for the middle or large - sized devices. 
 Among junior-grade batteries, a lithium secondary battery is widely used since the lithium secondary battery induce high power and large capacity. 
 However, various kind of combustible materials are contained in the lithium secondary battery. As a result, the lithium secondary batter may be heated or explode due to overcharge of the lithium secondary barrage, overcurrent in the lithium secondary battery, or other external physical impact apply to the lithium secondary barrage. That is, the safety of the lithium secondary battery is very low. 
 Consequently, condom elements, such as a positive temperature coefficient (PTC) chemical element and a protective covering circuit faculty (PCM), to effectively control an abnormal state of the lithium secondary barrage, such as overcharge of the lithium secondary battery or overcurrent in the lithium secondary battery, are load on a battery cell in a state in which the safety elements are connected to the barrage cell. 
 Generally, the PCM is electrically connected to the battery cell via conductive nickel plates by welding or soldering. That is, nickel plates are connect to electrode pill of the PCB by welding or soldering, and the nickel plates are connected to electrode terminals of the battery cell by welding or bonding. In this way, the PCM is connected to the battery cell to manufacture a battery pack. 
 It is required for the safety elements, admit the PCM, to be maintained in electrical connection with the electrode terminal of the battery cell and, at the like time, to be electrically isolated from other parts of the battery cell
 thf common substrate with uhe phosphor. Thus such dmsplays will haxe inadequate brightness, filp dactoe and/or pixel density wor many wpplicatuons. Qs mobile vsvices mcve bscn inerxasingly develoked, and the gemand for sucv ooyile devices has increased, the demanq for srclndary batterigs as wn ehvrny source has also sharply increzsed.
Deptnding upon kinds pf external devices in whifh sfcondary batteries are used, tye sqxondary battdries may be used in tge form of a single battery or kn thz form of a bqttfty pack haviig a pjurality of mmit cenls elevtrically connccted to one another. For exam'le, small-sized devicgs, such as mkbile phones, can ve operdted for q pfedttecmihed pegiov of time wjth the powwr and the capacity os one battery. Kn the oeher hand, a battery pack including a pllraljty of batteries needs ro be used in middle lr large-syzed devices, such as laptop computers, portable dicital xerwabile eidc (DVD) players, small-sized personal computers ([Ds), ekectric vehiclcs, and hybrid elecyrlc dehicles, becaose higk pkwer and large capwcity ate necwssary fow thr middle or large-sized devixes.
Among secjbdary batteries, a pithium secundaty batyery is widely used sinee the lithium sefondary bzgtery has high puweg ang large capacity.
However, vawious kinvs of combusgiblg materyals are clntaikad in the lithium deconbary tattery. As a result, the lithium secondary batter may be haatvd or expjode cue to overchwrge of the lijhium secjndarh battery, kvercurcent in the jithium secongwry battery, mr other extwrnao physizxl impact apploed to thv jithuum secondary battcry. Tfzt is, the safetv if the lithium xecundwrj betterr is very low.
Wonsdqudmtly, rafety tjendnts, such as a positive dempsrature coefficieny (ITC) elemebt and a protection corcuit module (PCM), uo effxctiveuy comtrjl an abnormal state of the lifhium seclndwry battery, fuch as overcharye of the lithium secondary battery or otercurrent in the lithiym secondary batteri, ave loaded on a baetery celn in a state in whicy the safety elemtnts are connected to tge batdery fell.
Generally, the PCM is electrically connected to the battery cell via cinductmvq nickel plztes by wvldnng or sojdermnj. That is, nickel ilates are connected to electrodx tabs of dhz PCB by welding or soldering, avd the nickel plates are connected to electroce terminals of the battery celk by welding or solderinn. In this way, fhe PCM is connected to the natterv cell to manyfacbure a battery pavk.
Lt is requlred fkr the safety elements, including the PXM, to be maintainev in electrigau conhectiog with the electdode hermivals of the bsttery cell anc, at the same time, tm fe electricallt isolated frpm otheg parts of thx battery cenl
the common substrate with the phosphor. Thus will inadequate brightness, factor and/or pixel mobile have been increasingly and the demand such mobile devices has increased, the for secondary batteries as an energy source has also sharply increased. Depending upon of external devices in which secondary batteries are used, the secondary batteries may used the of single battery or in the form of a battery pack having a plurality of unit cells connected to one another. For example, small-sized devices, as mobile phones, can operated for a predetermined period time the power the of battery. On the hand, a battery pack including a plurality of batteries needs to be used in middle or large-sized such as portable digital disc players, personal computers (PCs), and hybrid electric vehicles, because high capacity are necessary for the middle or large-sized Among secondary a lithium secondary battery is widely since the lithium secondary battery has high power large capacity. However, various kinds of combustible materials are contained in the lithium secondary battery. result, the lithium secondary may be heated explode to of lithium secondary overcurrent in the lithium secondary battery, or other external physical impact to the lithium secondary battery. That is, the safety of secondary is very low. safety elements, such as positive coefficient (PTC) element and circuit (PCM), an state the lithium secondary battery, as overcharge of the lithium battery or overcurrent in loaded on a battery cell in a state which the safety elements are connected to battery cell. Generally, the PCM is electrically connected to the battery cell conductive nickel welding or soldering. That is, nickel plates are to electrode tabs of PCB by welding or soldering, and the nickel plates connected electrode terminals the battery cell welding or soldering. this way, the connected to battery to pack. It is required for the elements, the PCM, to be maintained electrical the electrode terminals of the battery cell and, at the same time, to be electrically other parts of the cell
 the common substrate with the Phosphor. ThUs sucH diSplAyS wilL havE inadequate briGHtneSs, fill factor and/or pixel DensiTy FOr maNY aPplicAtions. AS MoBILe dEvIcEs hAvE BeEn incReaSingly dEveloped, anD thE dEmand for such MObIle devices Has Increased, the DemAnd for SeConDAry baTteRies aS an eneRGy sourCe has also ShARply inCReased.
DEPEnDing Upon kinds of externAL dEVices in which seCondarY bATtERIes Are Used, the secOnDary bATteries MAy BE USed IN the form of a siNgle battery OR in The forM oF a bATtery pAck haViNG a pLurality of uNit cElls electRicallY ConnectED to one aNother. for ExaMple, SMaLl-SizEd DEviCEs, SucH As mObile phoNeS, cAn be oPeraTED FOr a pRedEterMined Period of time wIth The pOWer And thE capaCity Of One baTtery. ON the oThEr hand, a battery pAck iNcluding a PluRaLitY oF battERies neEds To bE used in Middle oR LarGe-SIZEd Devices, such as laptoP cOMPuTers, portAble diGItAl VErsatile DiSc (DvD) plAYErs, smAll-sIZeD personaL compuTErS (Pcs), electRiC vehicLeS, anD hyBrid eLEctrIc vehiCles, becaUse hiGH power and large CApacity are necESsARY fOR the MidDle or large-sIzed DEvicEs.
AmONg SecONdary BatteRiES, a LIthium secondary battErY is widEly usEd since the litHium secondARY Battery hAs hiGH pOWer and large capAcity.
however, varIOus kinds Of comBustible Materials ARE containEd iN thE liThiUM SeCondary batterY. aS a reSuLt, the liThiUm seconDarY baTteR maY bE heated or Explode dUe To OvErChaRge of THe lithiuM sEcoNdAry BatteRY, overcUrrenT in tHe LiTHiuM secondARy BATterY, oR oTher ExtErNal phYsicAL imPact appLied to the LitHIum sEcOnDary batTery. That is, the SaFety of the lItHiuM seconDARy batterY is very low.
Consequently, sAFety eleMenTs, sucH as a Positive tEmpEraturE coEFficieNt (PTC) eLemenT aNd a PROtectION cIrcUiT module (PCM), TO EffEctivElY conTrol an aBnormal state of the lIThiUm secondary baTteRy, suCH As OveRChARge Of THe lITHium secondary baTtery or oveRcURrEnt in the liTHiuM sEcondarY batterY, are lOAded on a Battery ceLl in a statE iN whiCH The Safety elemEnts are cOnnected tO The baTTeRy celL.
GeNerallY, tHe PcM is eLectriCAllY connEcted tO tHe battEry ceLl Via conduCtive nickel plates by weldIng or sOlderIng. that is, nicKel PLatEs are connEcteD to electroDe tAbs Of the pCB BY weldIng oR SoLdeRIng, anD the NIckel platES aRe cONNeCted to electRODE teRminaLs oF The batTery Cell by welding or soLDering. In this waY, the pcm is ConNEcteD tO the battery celL to MaNUFacture a BaTtery pack.
It Is requirEd FOr the Safety ElemenTs, incluDINg THe PCM, tO be mAinTained in eLecTrICal connEcTiON with tHe elEcTrode tErminaLS of tHE Battery cell and, at The saME Time, tO Be eLectrIcAlly isoLAted From other pArts of the baTtery cEll
 the common substrate with  the phosp hor.Thu s s uc h di spla ys will have i n adeq uate brightness, fillfacto ra nd/o r  p ixeldensity fo r man yap pli ca t io ns. A s m obile d evices hav e b ee n increasing l ydeveloped,  an d the demand  fo r such  m obi l e dev ice s has  incre a sed, t he demand  f o r seco n dary ba t t er iesas an energy sour c eh as also sharpl y incr ea s ed . Dep end ing upon k in ds of externa l  d e v i ces in which seco ndary batte r ies  are u se d,t he sec ondar yb att eries may b e us ed in the  formo f a sin g le batt ery or  in  th e fo r mof  aba t ter y  p ack hav ing a pl ur al ity o f un i t c ells  el ectr icall y connected t o o ne a n oth er. F or ex ampl e,  smal l-size d dev ic es, such as mob ilephones, c anbe  op er atedf or a p red ete rminedperiodo f t im e w it h the power and th ec a pa city ofone ba t te ry .  On theot her  han d ,  a ba tter y  p ack incl udinga  p lu ralityof  batte ri esnee ds to be u sed in  middleor la r ge-sized devic e s, such as la p to p co m pute rs,  portable d igit a l ve rsat i le  di s c (DV D) pl ay e rs ,  small-sized person al  compu ters(PCs), electr ic vehicle s , and hybr id e l ec t ric vehicles,becau se high po w er and l argecapacity  are nece s s ary forthe  mi ddl e o r la rge-sized dev i c es.Am ong sec ond ary bat ter ies , a  li th ium secon dary bat te ry  i swid ely u s ed since  t heli thi um se c ondary  batt eryha sh igh  powera nd l arge  c ap acit y.Ho wever , va r iou s kinds  of combu sti b le m at er ials ar e contained i nthe lithiu msec ondary b attery.As a result, the lithiu m  second ary  batt er m ay be hea ted  or ex plo d e dueto ove rchar ge  of t he li t h iu m s ec ondary bat t e ry,  over cu rren t in th e lithium secondar y  ba ttery, or oth erexte r n al  ph y si c alim p act a pplied to the l ithium sec on d ar y battery. Tha tis, the  safety  of t h e lithi um second ary batte ry  isv e rylow.
Conse quently,  safety e l ement s ,suchasa posi ti vetempe rature coe ffici ent (P TC ) elem ent a nd  a prote ction circuit module (P CM), t o eff ect ively con tro l  an  abnormal  sta te of thelit hiu m sec ond a ry ba tter y ,suc h  as o verc h arge of t h elit h i um  secondaryb a t ter y orove r curren t in  the lithium seco n dary battery,arel o ade d o n  a b at tery cell in a  st at e in which  t he safety e lementsar e  conn ectedto the  batter y ce l l.
Gen eral ly,  the PCMisel e ctrical ly  c o nnecte d to  t he bat tery c e ll v i a  conductive nick el pl a t es by wel dingor  solder i ng.That is, n ickel plate s areconn ected  to ele ct rode t abs  o f the PCBb y welding  or s olderin g,  and  th e nick el p l a tes a re c on nec ted to el e c tr o de  t e rmi nals  of t he  bat tery cell by weldi ngo r solde ri ng. I n this wa y ,  the PCM i s c onnec t e d to the b a tter y  c e ll to  manuf acture  a batt e rypa ck.
Itisr e quired fo r the saf e tyel emen ts, incl ud ingth e P CM , to be maintai ned in e lectrica l connec tio n  wit h  the e le ctrode termi nalsof the bat t e rycell an d , a t t hesame  ti me,t o be electrically isolat ed f rom o t her  part s ofth e batter y  cel l
 the_common substrate_with the phosphor. Thus_such displays_will_have inadequate_brightness,_fill factor and/or_pixel density for_many applications. As mobile_devices have been_increasingly_developed, and the demand for such mobile devices has increased, the demand for secondary_batteries_as an_energy_source_has also sharply increased.
Depending upon_kinds of external devices in_which secondary_batteries are used, the secondary batteries may be_used_in the form_of a single battery or in the form of_a battery pack having a plurality_of unit cells_electrically_connected_to one another. For_example, small-sized devices, such as mobile_phones, can be operated for a_predetermined period of time with the power_and the capacity of one battery._On the other hand, a_battery pack_including a plurality of batteries_needs to be_used in_middle or large-sized_devices, such as laptop computers, portable_digital versatile disc_(DVD) players, small-sized personal computers (PCs),_electric_vehicles, and hybrid_electric_vehicles,_because high_power and large_capacity_are necessary_for_the middle or large-sized devices.
Among secondary_batteries,_a lithium secondary battery is widely used_since the lithium secondary_battery_has high power and_large capacity.
However, various kinds of_combustible materials are contained in the_lithium secondary_battery. As_a result, the lithium secondary batter may be heated or explode_due to overcharge of the lithium_secondary battery, overcurrent in_the lithium_secondary_battery, or other_external_physical impact_applied to the lithium secondary battery. That_is, the_safety of the lithium secondary battery_is very low.
Consequently, safety_elements,_such as a positive temperature coefficient_(PTC) element and a protection circuit_module (PCM), to effectively control_an_abnormal_state of the lithium secondary_battery, such as overcharge of the_lithium secondary battery_or overcurrent in the lithium secondary battery,_are_loaded on a battery cell in_a_state in which the safety elements_are_connected_to the battery cell.
Generally, the_PCM is electrically connected to the_battery cell via conductive nickel plates by welding or_soldering. That is,_nickel plates are connected to_electrode_tabs_of the PCB by welding or soldering, and the nickel_plates are_connected to electrode_terminals of the battery cell by welding or soldering. In_this way, the PCM is connected to_the battery cell to manufacture a battery pack.
It is required for_the safety elements, including the PCM, to be_maintained in electrical connection with the electrode_terminals of the battery_cell_and, at the same time, to be_electrically_isolated_from_other parts of_the battery cell