Mukugadzirisa kweakaomesesa flex circuit mabhodhi, chinonetsa ndechekuti ungaita sei kudzvanya kunoshanda pamajoini emabhodhi. Parizvino, ichi chichiri chinhu icho PCB vagadziri vanofanirwa kubhadhara zvakanyanya. Pazasi, Capel inokupa sumo yakadzama kune akati wandei pfungwa dzinoda kutariswa.
Rigid Flexible PCB Substrate uye Prepreg Lamination: Mafungiro Akakosha eWarpage Reduction uye Thermal Stress Relief.
Kunyangwe iwe uri kuita substrate lamination kana nyore prepreg lamination, kutarisa kune warp uye weft yejira regirazi kwakakosha. Kuregeredza zvinhu izvi kunogona kukonzera kuwedzera kwekushisa kunetseka uye warpage. Kuve nechokwadi chemhando yepamusoro mhedzisiro kubva kune lamination process, kutarisisa kunofanirwa kubhadharwa kune aya maficha. Ngationgororei zvinorehwa newarp uye weft nzira, uye tiongorore nzira dzinoshanda dzekubvisa kushushikana kwekupisa uye kuderedza warpage.
Substrate lamination uye prepreg lamination ndiwo maitiro akajairika mukugadzira, kunyanya mukugadzirwa kweakadhindwa edunhu mabhodhi (PCBs), zvemagetsi zvikamu uye zvinhu zvinoumbwa. Idzi nzira dzinosanganisira kubatanidza zvidimbu zvezvinhu pamwechete kuti zvigadzire yakasimba uye inoshanda yekupedzisira chigadzirwa. Pakati pezvakawanda zvinotariswa zvekubudirira lamination, kutaridzika kwejira regirazi muwarp uye weft kunoita basa rakakosha.
Warp uye weft zvinoreva nzira mbiri huru dzefiber muzvinhu zvakarukwa zvakaita sejira regirazi. Nzira yewap inowanzoenderana nehurefu hwemupumburu, ukuwo weft direction ichienda perpendicular kune warp. Aya maonesheni akakosha nekuti anoona zvinhu zvemichina, senge simba rekusimba uye kugadzikana kwedimensional.
Kana zvasvika kune substrate lamination kana prepreg lamination, kwakaringana warp uye weft kurongeka kwejira regirazi kwakakosha kuchengetedza yaidiwa ma mechanika echigadzirwa chekupedzisira. Kutadza kurongeka zvakanaka maitiro aya kunogona kukonzera kukanganisa kutendeseka kwechimiro uye njodzi yakawedzera yehondo.
Thermal stress ndechimwe chinhu chakakosha kufunga panguva yelamination. Thermal stress ndiko kunetsa kana deformation inoitika kana chinhu chikachinja tembiricha. Inogona kutungamirira kumatambudziko akasiyana-siyana anosanganisira warping, delamination, uye kunyange kutadza kwemuchina kwezvimiro zvelaminated.
Kuti uderedze kushushikana kwekupisa uye kuve nechokwadi chekubudirira kwekuita lamination, zvakakosha kutevedzera mamwe nhungamiro. Chekutanga uye chakakosha, ita shuwa kuti jira regirazi rinochengetwa uye rinobatwa munzvimbo inodzorwa tembiricha kuti uderedze kusiyana kwetembiricha pakati pezvinhu uye nzira yekuisa. Iyi nhanho inobatsira kuderedza njodzi yehondo nekuda kwekukurumidza kuwedzera kwekupisa kana kuderera.
Uye zvakare, inodzorwa yekudziya uye kutonhora mitengo panguva yelamination inogona kuwedzera kudzikisira kushushikana kwekupisa. Iyo tekinoroji inogonesa izvo zvinhu zvishoma nezvishoma kuchinjika kune tembiricha shanduko, kuderedza njodzi yehondo kana shanduko yedimensional.
Mune zvimwe zviitiko, zvingave zvinobatsira kushandisa nzira yekudziya yekushushikana senge post-lamination kurapa. Iyo nzira inosanganisira kuisa iyo laminated chimiro kune inodzorwa uye zvishoma nezvishoma tembiricha shanduko kuti ibvise chero yasara yekupisa kushushikana. Inobatsira kuderedza warpage, inowedzera kugadzikana kwedimensional uye inowedzera hupenyu hwezvigadzirwa zvelaminated.
Pamusoro pekufunga uku, zvakakoshawo kushandisa zvemhando yepamusoro uye kutevedzera nzira dzekugadzira dzakafanira panguva yekugadzira lamination. Kusarudzwa kwejira regirazi remhando yepamusoro uye zvinhu zvinosungirirana zvinogonesa kuita kwakaringana uye kunoderedza njodzi yehondo uye kushushikana kwekupisa.
Pamusoro pezvo, kushandisa nzira dzekuyera dzakaringana uye dzakavimbika, dzakadai selaser profilometry kana strain gauges, dzinogona kupa ruzivo rwakakosha mupeji yehondo uye kushushikana kwemazinga emalaminated zvimiro. Kugara kutariswa kweaya ma parameter kunobvumira kugadziridzwa nenguva uye kugadzirisa pazvinenge zvichidikanwa kuchengetedza zvinodiwa zvemhando yepamusoro.
Chinhu chakakosha chekufunga nezvazvo pakusarudza iyo yakakodzera zvinhu zvekushandisa kwakasiyana ndiko ukobvu uye kuoma kwezvinhu.
Izvi ndezvechokwadi kunyanya kune akaomeswa mabhodhi anoda kuve ehumwe ukobvu uye kuomarara kuti ave nechokwadi chekushanda kwakanaka uye kusimba.
Iyo inochinjika chikamu chebhodhi rakasimba kazhinji yakatetepa uye haina chero girazi jira. Izvi zvinoita kuti ive nyore kune zvakatipoteredza uye kupisa kwemhepo. Kune rumwe rutivi, chikamu chakaoma chebhodhi chinotarisirwa kuramba chakagadzikana kubva kune zvakadaro kunze kwezvinhu.
Kana iyo yakaomarara chikamu chebhodhi chisina imwe ukobvu kana kuomarara, mutsauko wekuti unoshanduka sei uchienzaniswa neinochinjika chikamu unogona kuoneka. Izvi zvinogona kukonzera kurwa kwakanyanya panguva yekushandiswa, izvo zvinogona kukanganisa maitiro ekutengesa uye kushanda kwese kwebhodhi.
Nekudaro, musiyano uyu ungaratidzika seusingakoshi kana chikamu chakaomarara chebhodhi chine mwero wekukora kana kuoma. Kunyangwe iyo inoshanduka chikamu ichichinja, iyo yakazara flatness yebhodhi haikanganiswe. Izvi zvinovimbisa kuti bhodhi rinoramba rakagadzikana uye rakavimbika panguva yekutengesa uye kushandiswa.
Zvakakosha kucherechedza kuti nepo ukobvu nekuoma kwakakosha, kune miganhu yekukobvu kwakakodzera. Kana zvikamu zvikave zvakanyanya, kwete chete bhodhi richava rinorema, asi richavawo risina hupfumi. Kuwana chiyero chakakodzera pakati peukobvu, kuomarara uye huremu kwakakosha kuti uve nechokwadi chekushanda kwakanyanya uye mutengo-unoshanda.
Kuedza kwakadzama kwaitwa kuona ukobvu hwakakodzera hwemapuranga akaomarara. Zviyedzo izvi zvinoratidza kuti ukobvu hwe 0.8 mm kusvika 1.0 mm hunonyatsokodzera. Mukati merudzi urwu, bhodhi rinosvika padanho rinodiwa rehukobvu nekuomarara richiri kuchengetedza huremu hunogamuchirika.
Nekusarudza bhodhi rakasimba rine ukobvu hwakakodzera uye kuoma, vagadziri uye vashandisi vanogona kuve nechokwadi chekuti bhodhi rinoramba rakati sandara uye rakagadzikana kunyangwe pasi pemamiriro akasiyana. Izvi zvinovandudza zvakanyanya hutano hwese uye kuvimbika kweiyo soldering process uye kuwanikwa kwebhodhi.
Zvinhu zvinofanirwa kutariswa kana uchigadzira uye yakakodzera:
rigid flex circuit boards musanganiswa wema substrates uye mabhodhi akaomarara. Uku kusanganiswa kunobatanidza zvakanakira zviviri izvi, izvo zvine zvese kuchinjika kwezvinhu zvakaomarara uye kusimba. Ichi chakasarudzika chinongedzo chinoda chaiyo yekugadzirisa tekinoroji kuti ive nechokwadi chekushanda kwakanyanya.
Paunenge uchitaura nezvekurapa kwemahwindo anoshanduka pamapuranga aya, kugaya ndeimwe yenzira dzakajairika. Kazhinji, kune nzira mbiri dzekugaya: kutanga kugaya, uyezve kugaya zvine mwero, kana mushure mekupedza zvese zvakapfuura maitiro uye kuumbwa kwekupedzisira, shandisa laser yekucheka kubvisa tsvina. Sarudzo yenzira mbiri idzi zvinoenderana nechimiro uye ukobvu hwebhodhi rakapfava uye rakaomarara rekubatanidza pacharo.
Kana hwindo rinochinjika rakatanga kugayiwa kuti ive nechokwadi chekuti chigayo chakanyanya kukosha. Kugaya kunofanirwa kuve kwakaringana, asi kusiri kudiki nekuti hakufanire kukanganisa maitiro ekushongedza. Kuti izvi zviitike, mainjiniya anogona kugadzirira milling data uye anogona kufanogaya pahwindo rinoshanduka zvinoenderana. Kuburikidza neizvi, deformation inogona kudzorwa, uye iyo welding process haina kukanganiswa.
Kune rimwe divi, kana ukasarudza kusagaya hwindo rinoshanduka, laser yekucheka ichaita basa. Laser kucheka inzira inoshanda yekubvisa inoshanduka tsvina yehwindo. Nekudaro, teerera kudzika kwelaser yekucheka FR4. Inoda kukwenenzvera kudzvinyirira paramita nenzira kwayo kuti ive nechokwadi chekubudirira kucheka kwemahwindo anochinjika.
Kuti uwedzere kudzvinyirira paramita, iwo ma paramita anoshandiswa nekutaura kune anochinjika substrates uye akaomeswa mabhodhi anobatsira. Iyi yakazara optimization inogona kuve nechokwadi chekuti kudzvanywa kwakakodzera kunoshandiswa panguva yekumanikidza kwedhiza, nekudaro kugadzira yakanaka yakaoma uye yakaoma musanganiswa bhodhi.
Izvo zviri pamusoro ndizvo zvinhu zvitatu zvinoda kutariswa zvakanyanya paunenge uchigadzira uye nekudzvanya rigid flex circuit board. Kana uine mimwe mibvunzo pamusoro pemabhodhi edunhu, ndapota inzwa wakasununguka kutibvunza. Capel yakaunganidza makore gumi nemashanu eruzivo rwakapfuma muindasitiri yebhodhi redunhu, uye tekinoroji yedu mumunda weakaomesesa-flex mabhodhi akakura.
Nguva yekutumira: Aug-21-2023
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