I-Medical Device Ceramic PCB: I-Precision Substrates ye-Advanced Medical Electronics

Isingeniso

Ama-elekthronikhi ezokwelapha anamuhla adinga ukufakelwa kukagesi okumangalisayo, ukuphathwa kokushisa okunembile, kanye nokuphepha kwezinto ezibonakalayo ukuqinisekisa impilo yesiguli kanye nobude besikhathi sedivayisi. Ama-PCB e-ceramic edivayisi yezokwelapha avele njengesisekelo esikhethwayo sezinhlelo zokusebenza lapho amabhodi wesekethe avamile engaphumeleli khona. Ngokungafani nezinto eziphilayo, ama-substrate e-ceramic anikeza ukuhanjiswa kokushisa okuphezulu, akukho ukukhishwa kwegesi, kanye nokuhambisana kwezinto eziphilayo okuhlangabezana nezidingo zomthetho eziqinile.

Lesi sihloko sihlola izici zokusebenza ezibalulekile, izinhlelo zokusebenza ezijwayelekile, nokucatshangelwa kwedizayini okwenza ama-substrates e-ceramic abe yisixazululo esithandwayo sokunemba kobuchwepheshe bezokwelapha.

Kungani ama-PCB e-Ceramic Edivayisi Yezokwelapha Elungele I-Medical Electronics

Imikhawulo Yezinto Ezivamile ze-PCB

I-FR-4 kanye ne-metal-core PCBs ayashoda ezindaweni zezokwelapha ezidinga ukwethembeka nokuhlanzeka okwedlulele. I-FR-4 iqukethe ama-organic resin awonakalayo ngaphansi kokushisa noma adedele inhlanganisela eguquguqukayo, kuyilapho ama-metal-core substrates, nakuba esebenza kahle ngokushisa, sintula ukufakwa kukagesi okudingekayo kumasekhethi ezokwelapha anamandla amakhulu.

Izinzuzo ze-Inorganic Ceramic Substrates

Ama-PCB e-Ceramic asusa lezi zingqinamba ngokwakhiwa kwawo okungaphelele. Angenazo izinhlayiya noma ama-binder, avimbela ukungcola futhi agcina ubumsulwa obumangalisayo. Njengoba enezinhlayiya zokulahlekelwa yi-dielectric ezingaphansi kuka-0.001 kuzo zonke izigaba zemvamisa ebanzi, i-alumina kanye ne-aluminium nitride ceramics ziqinisekisa ubuqotho besignali ezinhlelweni zokuxilonga nokuzwa ezibucayi.

Ukuzinza kwe-Thermal, Chemical, kanye ne-Dimensional

Ama-substrates e-Ceramic ahlala ezinzile ukusuka emazingeni okushisa e-cryogenic ukuya ngaphezu kuka-300 °C ngaphandle kokungqubuzana noma ukukhukhuleka kokusebenza. Ukumuncwa kwawo umswakama oseduze noziro kuvimbela ukuvuvukala nokuhlukahluka kukagesi ngesikhathi sokwenziwa inzalo kwe-autoclave. Le nhlanganisela yokubekezelela okushisayo, ukungabi namandla kwamakhemikhali, nokuzinza kobukhulu kwenza ama-PCB e-ceramic afaneleke kumadivayisi wezokwelapha afakelwayo futhi abulale inzalo yempilo ende.

Izinzuzo Ezibalulekile Zokusebenza Kwedivayisi Yezokwelapha Ye-Ceramic PCBs

Ukusebenza Kwesekethe Okunembayo Okuphezulu

Imishini yezokwelapha ye-ceramic ye-PCB substrates isekela ukulandelelwa kobubanzi nesikhala esingaphansi kwama-micrometer angu-50, inika amandla izakhiwo zesekethe eliminyene elidingekayo kumamojula enzwa emincane kanye nemidwebo yezithombe zamashaneli amaningi. I-coefficient eseduze noziro yokungafani kokunwetshwa kwe-thermal nama-silicon semiconductors ivimbela ukukhathala okuhlangene kwe-solder kuma-flip-chip assemblies. Amanani obunzima bobuso obungaphansi kwama-micrometer angu-0.2 anciphisa ukulahleka kwesignali kumasekhethi e-RF anemvamisa ephezulu asetshenziselwa i-telemetry engenantambo nokuhlonza izithombe.

Ukuzinza Kokushisa kanye Nokushabalalisa Ukushisa

Ama-Aluminium nitride ceramic substrates afinyelela amanani e-thermal conductivity angaphezu kuka-170 W/mK, asondele kuleya yethusi elimsulwa kuyilapho egcina ukufakwa kukagesi. Lokhu kusebenza okushisayo kufakazela ukuthi kubalulekile kumasekhethi omshayeli we-laser kanye nokukhanyisa kokuhlinzwa kwe-LED lapho ukukhiqiza ukushisa okugxilile kungabangela ukukhukhuleka kokulinganisa noma ukwehluleka kwengxenye kuma-substrate avamile. Amandla afanayo okusabalalisa ukushisa kwemishini yezokwelapha ye-ceramic PCB aqeda izindawo ezishisayo ezisheshisa ukuguga kumasekhethi e-analog anembayo.

I-Biocompatibility kanye Nokuphepha

I-Alumina ne-aluminium nitride ceramics ziyahlangabezana nezidingo zokuhlolwa kwe-ISO 10993 kokuxhumana kwezicubu zesikhashana kanye nokufakelwa isikhathi eside. Ukuqina kwamakhemikhali kwalezi zinto kuvimbela ukugeleza kwe-ion okungabangela izimpendulo zokuvuvukala noma kuphazamise ukusebenza kwamaseli. Izingxenye ze-PCB ze-ceramic zedivayisi yezokwelapha zigcina izakhiwo zazo ezingasebenzi kahle phakathi namashumi eminyaka okuchayeka oketshezini lomzimba, okwenza zifanelekele ama-pacemaker kanye nama-neurostimulators lapho ukuhlinzwa kokushintsha idivayisi kumele kuncishiswe khona.

Ukumelana namakhemikhali kanye nemisebe

Ama-substrates e-Ceramic amelana nokuchayeka kaningi ku-plasma ye-hydrogen peroxide, i-ethylene oxide, nokuvalwa kwe-gamma radiation ngaphandle kokuwohloka kwendawo noma ukuguqulwa kwempahla kagesi. Lokhu kuqina kudlulela ezindaweni zamakhemikhali ezinokhahlo kubahlaziyi bokuxilonga lapho ama-reagents angase ahlasele izinto zebhodi lesifunda. Ubulukhuni bemisebe yemishini yezokwelapha ye-ceramic PCB ehlanganisayo ifakazela ukuthi ibalulekile ezinhlelweni zokuthola i-X-ray kanye ne-CT scanner electronics ebekwe ezinkambini zemisebe eguquguqukayo ephezulu.

Ukuphila Isikhathi Eside Nokwethenjelwa

Imishini yezokwelapha ivamise ukudinga isikhathi sokuphila sokusebenza esidlula iminyaka eyishumi nanhlanu ngezinga lokwehluleka elingaphansi kwehora elilodwa esigidini samahora wedivayisi. Ama-Ceramic substrates awanazo izindlela zokuwohloka kwezinto eziphilayo ezikhawulela ukuphila kwebhodi le-FR-4, okuhlanganisa i-delamination, ukukhula kwe-conductive anodic filament, kanye nokwakheka kwenhlanganisela ye-intermetallic emazingeni okushisa aphakeme. Ukuhlolwa kwempilo okusheshisiwe kubonisa ukuthi izingxenye ze-PCB ze-ceramic zedivayisi yezokwelapha eziklanywe kahle zigcina amapharamitha kagesi azinzile ngokusebenzisa amabhayisikili ashisayo kanye nokuchayeka komswakamo okulingana namashumi eminyaka esevisi etshaliwe.

Izicelo Okujwayelekile Yedivayisi Yezokwelapha Ceramic PCBs

Ubuchwepheshe be-Ceramic PCB yedivayisi yezokwelapha busebenza imisebenzi ebalulekile ezigabeni eziningi zemishini yezokwelapha, ngasinye sinezidingo ezihlukile zokusebenza nokulindelwe ukwethembeka. Lezi zinhlelo zokusebenza ezilandelayo zibonisa ukuthi ama-substrates e-ceramic anika amandla kanjani ugesi wezokwelapha oseqophelweni eliphezulu.

Amadivayisi Afakelwayo

Ama-pacemakers enhliziyo asebenzisa ama-alumina ceramic substrates ukuze afake amasekhethi okuphatha amabhethri namamojula we-RF telemetry kumakesi e-titanium avalwe kahle. Izimila ze-Cochlear zikhweza izishayeli zokuvuselela ama-electrode ezithwali ze-ceramic ezihlinzeka kokubili ukuhlukaniswa kukagesi nokuhlakazeka okushisayo kwesifunda sokucubungula isignali. Ama-Neurostimulators okulawula izinhlungu kanye nokwelashwa kwesifo sika-Parkinson ancike kubuchwepheshe be-ceramic PCB bedivayisi ukuze balethe ama-pulses kagesi alinganiselwe ngaphandle kokukhukhuleka phakathi nokuphila kwedivayisi.

Amasistimu wokuxilonga

Isitholi se-X-ray sihlanganisa amakristalu e-bond scintillator kanye namalungu afanayo e-photodiode kuma-aluminum nitride substrates ahambisa kahle ukushisa kude nendawo etholakalayo ngenkathi ehlinzeka ngokuhlukaniswa kukagesi phakathi kwezinkulungwane zamashaneli ephikseli ngamanye. Imihlangano ye-Ultrasound transducer isebenzisa ama-substrates e-ceramic ukuze isekele ama-arrays wesici se-piezoelectric kanye nama-preamplifiers ahlanganisiwe ekucushweni okungashisa ngokweqile kumabhodi esekethe avamile. Izishayeli zekhoyili ye-MRI gradient zikhiqiza ama-kilowatts wamandla ashaywayo ezindaweni ezivalekile lapho ukuphathwa kwe-thermal PCB yesisetshenziswa sezokwelapha kuvimbela ukulimala kwengxenye futhi kugcine ukunemba kwesithombe.

Izinsiza Zokwelapha

Amasistimu e-laser okuhlinza akhweza amabha e-diode enamandla amakhulu namasekhethi omshayeli kuma-substrates e-ceramic asabalalisa imithwalo eshisayo ezindaweni ezinkulu kunamabhodi ensimbi-core angafinyelelwa ngenkathi egcina ukuhlukaniswa kukagesi. Amajeneretha e-Electrosurgical asebenzisa ama-ceramic substrates ezigabeni zawo zamandla e-RF lapho izidingo zokuhlukanisa i-voltage zidlula amandla ezinto ezisetshenziswayo ze-laminate.

Ukuqapha Amadivayisi

Izinzwa zokuqapha isiguli zezinga lokushisa, ukucindezela, nokugcwala komoyampilo egazini kuhlanganisa amasekhethi esignali okulungisa isimo kuma-substrates amancane e-ceramic angena ngaphakathi kwamaassemblies afakwe kwi-catheter. Izakhiwo ezizinzile ze-dielectric zemishini yezokwelapha ze-ceramic PCB ziqinisekisa ukuthi ukulinganisa kwenzwa kuhlala kunembile ngemijikelezo yokuvala inzalo ephindaphindiwe kanye neminyaka yokusetshenziswa emtholampilo.

Ukukhetha Okubalulekile Kwedivayisi Yezokwelapha Ye-Ceramic PCBs

Ukukhethwa kwezinto zobumba kuthinta ngqo ukusebenza kukagesi, amandla okuphatha ukushisa, kanye nesakhiwo sezindleko zezingxenye ze-PCB zobumba zedivayisi yezokwelapha . Izinto ngazinye zinikeza izinzuzo ezihlukile zezidingo ezithile zohlelo lokusebenza.

I-Alumina (Al₂O₃)

Ama-substrates e-alumina ceramic anikeza amandla e-dielectric angaphezu kuka-15 kV/mm kanye nokumelana nevolumu ngaphezu kuka-10¹⁴ ohm-cm ekamelweni lokushisa, okuwenza afanelekele ukuhlukaniswa kwe-voltage ephezulu kumshini wokuxilonga wokuxilonga kanye namadivayisi okwelapha. Ngesakhiwo sezindleko esiphansi kakhulu kune-aluminiyamu nitride, i-alumina isebenza njengento esebenzayo yama-elekthronikhi wezokwelapha ojwayelekile. Imishini yezokwelapha ye-ceramic PCB yemishini esebenzisa amaphesenti angama-96 noma i-alumina yokuhlanzeka yamaphesenti angama-99.6 inikeza ukusebenza kukagesi namandla okusebenza adingekayo ezinhlelweni eziningi kuyilapho kugcinwa izindleko zokukhiqiza ezongayo.

I-Aluminium Nitride (AlN)

Izinhlelo zokusebenza ezidinga i-thermal conductivity engaphezu kuka-150 W/mK zicacisa ama-aluminium nitride substrates naphezu kwezindleko zawo ezibonakalayo eziphezulu. Inhlanganisela yokusabalalisa ukushisa okuhle kakhulu kanye ne-dielectric engaguquki ephansi yenza i-aluminium nitride ibe yinketho ekhethwayo yezikhulisamandla zamandla e-RF ezinhlelweni ze-MRI kanye nokukhanya okuphezulu kwe-LED ekukhanyeni kokuhlinzwa. Imiklamo ye-PCB ye-ceramic yedivayisi yezokwelapha isebenzisa i-aluminium nitride ingasebenza ngokuminyana kwamandla aphezulu kune-alumina-based assemblies, ivumela izakhiwo zedivayisi ezihlangene lapho izithiyo zesikhala zibaluleke kakhulu.

I-Silicon Nitride (Si₃N₄)

Ama-Silicon nitride substrates ahamba phambili ezinhlelweni ezidinga amandla aphezulu emishini kanye nokumelana nokushaqeka okushisayo. Ukuqina kokuphuka kwempahla kudlula okwe-alumina ngesici sokuthathu, kunciphisa ubungozi bokuqhekeka kwe-substrate ngesikhathi sokusebenza kokuhlanganisa noma ukuthunyelwa kwedivayisi. Nakuba ingavamile kune-alumina noma i-aluminium nitride kuzinhlelo zokusebenza ze-ceramic PCB yedivayisi yezokwelapha, i-silicon nitride inikeza izinzuzo eziyingqayizivele zezidingo ezikhethekile zokuthembeka okuphezulu kumamojula wamandla aphezulu kanye neqoqo lomtshina wezithombe.

Ukucatshangelwa Kwedizayini Yedivayisi Yezokwelapha Ye-Ceramic PCBs

Ukuhlelwa Kwesekethe kanye Nokuphathwa Okushisayo

Isakhiwo sesifunda semishini ye-ceramic ye-PCB yedivayisi yezokwelapha kufanele ibhekane nokushwabana kwempahla eyisisekelo ngokubekwa ngokucophelela kwezimbobo ezifakwayo kanye nokuvuleka konqenqema. Idizayini yokuphatha okushisayo idinga ukumodeliswa okucacile kwemizila yokugeleza kokushisa njengoba ukuqhutshwa kokushisa okuphezulu kwe-substrate kudala ukusatshalaliswa kwezinga lokushisa okuhlukile kunalokho abaklami abajwayele amabhodi e-FR-4 abangase bakulindele.

Izici eziyinhloko zedizayini zifaka:

• Ngokwenza ngcono isakhiwo - Ukuxhuma izingqimba eziningi ze-metalization kudinga ama-diameter amakhulu kanye nokulawulwa kwe-aspect ratio ngokucophelela uma kuqhathaniswa ne-copper plating emabhodini ezinto eziphilayo.
• Ukuhlelwa kwendlela eshisayo - Ukugeleza kokushisa okuqondile kusuka ezingxenyeni zamandla aphezulu kuya kumasinki okushisa ngokusebenzisa i-ceramic substrate kunciphisa amazinga okushisa okuhlangana futhi kunwebe impilo yedivayisi.
• Ukukhethwa kwe-Metallization - Izinqubo zefilimu eziwugqinsi zisebenzisa amakhondaktha egolide aphrintwe isikrini noma i-platinum-silver ahlinzeka ngokunamathela okuqinile nokuhambisana kwentambo yokubopha intambo, kuyilapho izindlela zefilimu elincanyana zinika amandla osayizi besici abacinene ukuze kuxhumeke ukuminyana okuphezulu.
• Ukucaciswa kokuqedwa kobuso - Ukukhetha kokunamathisela kufanele kucabangele izindlela zokunamathisela ezihleliwe, noma ngabe i-solder reflow, i-conductive adhesive bonding, noma i-wire bonding ku-semiconductor iyafa.

Ukuhambisana Nokuhlanganisa Nokupakishwa

Imiklamo ye-PCB ye-ceramic yedivayisi yezokwelapha kufanele ihambisane namafomethi wokupakisha ajwayelekile we-semiconductor afaka phakathi i-BGA, LGA, nokulungiselelwa kwe-flip-chip kuyilapho kugcinwa ukusebenza okushisayo nokogesi. I-coefficient of thermal expansion match phakathi kwama-substrates e-ceramic namadivayisi e-silicon inika amandla okunamathiselwe okuthembekile ngaphandle kwezinto ezingagcwali phansi ezinhlelweni eziningi. Izidingo zokuvala uphawu ze-Hermetic zamadivayisi afakelwayo zidinga ukunemba kwe-substrate kanye nokulawula ukuqeda phezulu ukuze kuzuzwe izimpawu ezithembekile ezicijile noma ezishiselwe nge-titanium noma insimbi engagqwali.

Amazinga Okukhiqiza Edivayisi Yezokwelapha Ye-Ceramic PCBs

Ukuphathwa Kwekhwalithi Nokulandelela

Isitifiketi se-ISO 13485 sihlinzeka ngohlaka lokuphathwa kwekhwalithi oludingekayo ekukhiqizeni ingxenye yensiza yezokwelapha. Izakhiwo zokwenziwa kwe-Ceramic substrate kufanele zisebenzise ukulandeleka okuphelele kwezinto ezibonakalayo ezivela ezintweni zokusetshenziswa ezingenayo ngezimpahla eziqediwe, ezinemibhalo ebonisa ukulawulwa kwenqubo esinyathelweni ngasinye sokukhiqiza. Izindawo zokuhlangana zamagumbi ahlanzekile zivimbela ukungcoliswa kwezinhlayiyana ezingase zidale izindlela zokuvuza zikagesi noma zibe sengozini yokuvalwa kwe-hermetic kumadivayisi afakelwayo.

Ukulawulwa Kwenqubo Nokuqinisekisa

Ubuchwepheshe bokusika nokubhala nge-laser budala ubukhulu obuqondile be-substrate kanye nama-geometri ayinkimbinkimbi ngaphandle kokufaka imifantu emincane engadalwa ukusaha ngomshini. Izinhlelo zokuhlola ze-optical ezizenzakalelayo ziqinisekisa ubuqotho be-metallization, ukunemba kobukhulu, kanye nokuhlanzeka kwendawo ngaphambi kokuba ama-substrate angene enkambisweni yokuhlanganisa. Abakhiqizi be-PCB be-ceramic yedivayisi yezokwelapha basebenzisa ukulawulwa kwenqubo yezibalo ukuze balondoloze ukubekezelelana okuqinile kumapharamitha abalulekile kufaka phakathi amandla e-dielectric, ukumelana nokushisa, kanye nokunamathela kwe-metallization okuthinta ngqo ukuphepha nokuthembeka kwedivayisi.

Izilawuli ezibalulekile zokukhiqiza zihlanganisa:

• Isitifiketi sempahla engenayo - Izinto zobumba ezingavuthiwe zidinga isitifiketi somthengisi sokuhlanzeka, usayizi wokusanhlamvu, kanye nezakhiwo ezibonakalayo ukuze kuqinisekiswe ukusebenza okungaguquki kwe-substrate.
• Ukuqinisekiswa kwenqubo ye-Metallization - Amaphrofayili okudubula amafilimu aminyene kanye nemingcele yokubeka ifilimu emincane iqinisekiswa ngezikhathi ezithile ukuze kugcinwe amandla okunamathela kanye nokusebenza kukagesi ngaphakathi kwemikhawulo ebekiwe.
• Amaphrothokholi okuhlola ama-Dimensional - Hlanganisa imishini yokulinganisa kanye nezinhlelo ze-optical metrology zibhala phansi ukucaba kwe-substrate, ukuhlukahluka kogqinsi, kanye nokunemba kwesici sokubekwa ukuze kulandeleke ngokugcwele.
• Ukuhlola impilo okusheshisiwe - Izidingo zokuqinisekisa zezinhlelo zokusebenza zezokwelapha zidlulela ngale kokuhlolwa okujwayelekile kokwamukelwa kwe-PCB ukuze kubandakanye ukuqinisekiswa kokuvumelana kwe-biocompatibility, izifundo zokuguga, nokuhlaziywa kwemodi yokwehluleka.

Lezi zilawuli zokukhiqiza ziqinisekisa ukuthi yonke i-PCB ye-ceramic esetshenziswa kumishini yezokwelapha ihlangabezana nokuthembeka okuqinile kanye namazinga okuphepha. Ngokugcina ukuqinisekiswa okuqinile kwenqubo, ukunemba kobukhulu, nokuzinza kwempahla yesikhathi eside, abakhiqizi bangaqinisekisa ukusebenza okungaguquki kukagesi kanye nokuhambisana kwezinto eziphilayo kuwo wonke amaqoqo okukhiqiza - isidingo esibalulekile semishini yezokwelapha esekela ukuphila neyokuxilongwa.

Isiphetho

Ubuchwepheshe be-Ceramic PCB yedivayisi yezokwelapha buletha inhlanganisela eyingqayizivele ye-biocompatibility, ukusebenza okushisayo, nokuthembeka kwesikhathi eside okudingwa ugesi wesimanje wezokwelapha. Imvelo ye-ceramic substrates iqeda ukukhathazeka kokuphuma kogesi kanye nokukhishwa kwamakhemikhali ngenkathi ihlinzeka ngokufaka ugesi kanye namandla okukhipha ukushisa angenakuqhathaniswa nezinto ezivamile zebhodi lesifunda.

Kusukela kumishini yenhliziyo efakelwayo edinga amashumi eminyaka okusebenza okuzinzile kuya ezinhlelweni zokuxilonga ezilawula ukuminyana kwamandla aphezulu, ama-substrates e-ceramic anika amandla ukusungulwa kwezokwelapha okuthuthukisa imiphumela yesiguli nokuphila isikhathi eside kwedivayisi.

I-Highleap Electronics iletha amakhono aphelele ekukhiqizweni nasekuhlanganisweni kwe-PCB yensimbi yezokwelapha:

• Izikhungo zokukhiqiza eziqinisekisiwe ze-ISO 13485 - Izinhlelo zokuphatha zekhwalithi egcwele eziqinisekisa ukuthotshelwa kwemithetho kanye nokulandeleka okuphelele kwezinto zezingxenye zedivayisi yezokwelapha.
• Ukwakhiwa kwe-substrate ye-ceramic ethuthukisiwe - Ukusika i-laser enembile, ifilimu eliwugqinsi kanye nezinqubo ze-metalization yefilimu emincane, nezinhlelo zokuhlola ezizenzakalelayo ezigcina ukubekezelelana okuqinile kumapharamitha abalulekile kagesi nemishini.
• Izinsizakalo zokuhlanganisa amakamelo ahlanzekile - Izindawo ezilawulwa ukungcola zokubekwa kwengxenye, intambo yokubopha izintambo, kanye nemisebenzi yokuvala i-hermetic ehlangabezana nezidingo eziqinile zenhlanzeko yemishini yezokwelapha efakelwayo neyokuxilongwa.
• Ukwesekwa kobunjiniyela kanye nokusebenzisana kwedizayini – Ubungcweti bobuchwepheshe ekukhetheni izinto ze-ceramic, ukuthuthukiswa kokuphathwa kwe-thermal, kanye nedizayini yokwenziwa kusiza abathuthukisi bemishini yezokwelapha ukuthi bazulazule oguqukweni ukusuka ku-prototype ukuya ekukhiqizeni umthamo.

Xhumana ne-Highleap Electronics ukuze uxoxe ngokuthi amakhono ethu okukhiqiza i-PCB yedivayisi yezokwelapha angasekela kanjani iphrojekthi yakho ye-electronics yezokwelapha yesizukulwane esilandelayo ngokunemba, ukuthembeka, kanye nokuhambisana nemithetho okufunwa yiziguli nabahlinzeki bezempilo.