FR4 vs. Polyimide: Ndechipi chinyorwa chakakodzera maseketi anochinjika?

Mune ino blog, isu tichaongorora mutsauko uripo pakati peFR4 uye polyimide zvinhu uye maitiro azvo pane flex wedunhu dhizaini nekuita.

Flexible maseketi, anozivikanwawo seanochinjika akadhindwa maseketi (FPC), ave chikamu chakakosha chemagetsi emazuva ano nekuda kwekugona kwavo kukotama nekumonyoroka.Aya maseketi anoshandiswa zvakanyanya mumashandisirwo akadai sema smartphones, zvinopfekwa, magetsi emotokari, uye midziyo yekurapa.Zvishandiso zvinoshandiswa mukuchinjika wedunhu kugadzira zvinoita basa rakakosha mukuita kwavo uye kushanda kwavo.Zvinhu zviviri zvinowanzoshandiswa mumaseketi anochinjika FR4 uye polyimide.

FR4 inomirira Flame Retardant 4 uye iri fiberglass yakasimbiswa epoxy laminate.Inoshandiswa zvakanyanya sechinhu chakadzika cheakaomesesa akadhindwa edunhu mabhodhi (PCBs).Nekudaro, FR4 inogona zvakare kushandiswa mumaseketi anochinjika, kunyangwe paine zvisingakwanisi.Mabhenefiti makuru eFR4 isimba rayo repamusoro uye kugadzikana, zvichiita kuti ive yakakodzera kune maapplication uko kuoma kwakakosha.Iyo zvakare isingadhuri kana ichienzaniswa nezvimwe zvinhu zvinoshandiswa mumasekete anochinjika.FR4 ine yakanakisa magetsi ekudzivirira zvivakwa uye yakanaka yakakwirira tembiricha kuramba.Nekudaro, nekuda kwekuoma kwayo, haina kuchinjika sezvimwe zvinhu zvakaita se polyimide.

Polyimide, kune rumwe rutivi, ndeyepamusoro-inoita polymer inopa kusarudzika kuchinjika.Icho chinhu chinonzi thermoset chinokwanisa kumira kutonhora kwakanyanya uye chakakodzera kushandiswa kunoda kupisa kupisa.Polyimide inowanzo sarudzwa kuti ishandiswe mumaseketi anochinjika nekuda kwekuchinjika kwayo uye kusimba.Inogona kupetwa, kupetwa uye kupetwa pasina kukanganisa kushanda kwedunhu.Polyimide zvakare ine yakanaka magetsi ekudzivirira zvivakwa uye yakaderera dielectric isingachinji, iyo inobatsira kune yakakwira-frequency application.Nekudaro, polyimide inowanzo kudhura kupfuura FR4 uye simba rayo remuchina rinogona kunge rakaderera pakuenzanisa.

Ose ari maviri FR4 uye polyimide ane zvawo zvakanakira uye zvinogumira kana zvasvika pakugadzira maitiro.FR4 inowanzo gadzirwa uchishandisa nzira yekubvisa apo yakawandisa mhangura inodzikwa kure kuti igadzire inodiwa yedunhu pateni.Iyi nzira yakakura uye inoshandiswa zvakanyanya muPCB indasitiri.Polyimide, kune rumwe rutivi, inonyanya kugadzirwa uchishandisa nzira yekuwedzera, iyo inosanganisira kuisa zvidimbu zvitete zvemhangura pane substrate kuvaka mapatani edunhu.Iyo nzira inogonesa akakwenenzverwa conductor kuteedzera uye kusimba kwepakati, zvichiita kuti ive yakakodzera kune yakakwirira-density inochinjika maseketi.

Panyaya yekuita, sarudzo pakati peFR4 ne polyimide zvinoenderana nezvinodiwa zvekushandisa.FR4 yakanakira zvikumbiro uko kuomarara uye kusimba kwemagetsi kwakakosha, senge mota dzemagetsi.Iine kugadzikana kwakanaka kwekushisa uye inogona kumira kutonhora kwakanyanya.Nekudaro, kuchinjika kwayo kushoma kunogona kunge kusingakodzere maapplication anoda kupeta kana kupeta, senge midziyo inopfekwa.Polyimide, kune rumwe rutivi, inokunda mumashandisirwo anoda kuchinjika uye kusimba.Kugona kumirisana nekukotama kwakadzokororwa kunoita kuti ive yakanaka kune zvikumbiro zvinosanganisira kuenderera mberi kwekufamba kana kudedera, senge michina yekurapa uye zvemagetsi zvemuchadenga.

Muchidimbu, kusarudzwa kweFR4 uye polyimide zvinhu mumaseketi anochinjika zvinoenderana nezvinodiwa chaizvo zvekushandisa.FR4 ine yakakwira mechaniki simba uye kugadzikana, asi kushoma kuchinjika.Polyimide, kune rumwe rutivi, inopa kuchinjika kwepamusoro uye kusimba asi inogona kudhura.Kunzwisisa mutsauko uripo pakati pezvishandiso izvi kwakakosha pakugadzira uye kugadzira maseketi anochinjika anosangana nekuita kunodiwa uye kushanda.Ingave iri smartphone, inopfekeka kana yekurapa mudziyo, kusarudza zvinhu zvakanaka kwakakosha pakubudirira kwemaseketi anochinjika.