Yintoni iRigid Flex PCB Stackup

Kwihlabathi lanamhlanje elikhawulezayo letekhnoloji, izixhobo zombane ziya zihambela phambili ngakumbi kwaye zixinene. Ukuhlangabezana neemfuno zezi zixhobo zale mihla, iibhodi zesekethe eziprintiweyo (PCBs) ziyaqhubeka nokuvela kunye nokubandakanya iindlela ezintsha zokuyila. Enye itekhnoloji enjalo ilukhuni flex pcb stackup, enika iingenelo ezininzi ngokwemiqathango bhetyebhetye kunye nokuthembeka.Esi sikhokelo esibanzi siya kuphonononga ukuba yintoni istaki sebhodi yesekethe engqongqo, izibonelelo zayo, kunye nokwakhiwa kwayo.

Phambi kokuntywila kwiinkcukacha, masiqale sidlule kwiziseko ezisisiseko zePCB:

Ugcino lwePCB lubhekisa kulungiselelo lweeleya zebhodi yesekethe eyahlukileyo ngaphakathi kwePCB enye. Kubandakanya ukudibanisa izinto ezahlukeneyo ukwenza iibhodi ezininzi ezibonelela ngokuqhagamshelwa kombane. Ngokwemveli, kunye ne-PCB eqinile egciniweyo, kuphela izinto eziqinileyo zisetyenziselwa ibhodi yonke. Nangona kunjalo, ngokungeniswa kwezinto eziguquguqukayo, kwavela ingcamango entsha-i-stackup ye-PCB eqinile.

Ke, yintoni kanye kanye i-rigid-flex laminate?

I-stackup ye-PCB eqinile-eguquguqukayo yibhodi yesekethe ye-hybrid edibanisa izinto eziqinileyo kunye neziguquguqukayo ze-PCB. Iqukethe ukutshintshwa kweeleyile eziqinileyo kunye neziguquguqukayo, ezivumela ibhodi ukuba igobe okanye igobe njengoko kuyimfuneko ngelixa igcina ingqibelelo yesakhiwo kunye nokusebenza kombane. Olu hlanganiso lukhethekileyo lwenza ukuba i-PCB eqinile-eguquguqukayo i-stackups ilungele usetyenziso apho indawo ibalulekile kwaye kufuneka ukugoba okuguquguqukayo, okufana nezinto ezinxitywayo, izixhobo ze-aerospace, kunye nezixhobo zonyango.

Ngoku, makhe siphonononge izibonelelo zokukhetha isitaki sePCB esiqinileyo kwizinto zombane zakho.

Okokuqala, ukuguquguquka kwayo kuvumela ibhodi ukuba ingene kwiindawo eziqinileyo kwaye ihambelane neemilo ezingaqhelekanga, ukwandisa indawo ekhoyo. Oku kuguquguquka kwakhona kunciphisa ubungakanani obupheleleyo kunye nobunzima besixhobo ngokususa imfuno yezihlanganisi kunye neengcingo ezongezelelweyo. Ukongeza, ukungabikho kweziqhagamshelo kunciphisa iindawo ezinokuthi zingaphumeleli, kwandisa ukuthembeka. Ukongeza, ukuncitshiswa kwe-wiring kuphucula imfezeko yomqondiso kunye nokunciphisa ukuphazamiseka kwe-electromagnetic interference (EMI).

Ulwakhiwo lwesitaki sePCB esiqinileyo sibandakanya izinto ezininzi eziphambili:

Idla ngokuba neeleya ezininzi eziqinileyo ezidityaniswe ngamaleya aguqukayo. Inani leengqimba lixhomekeke kubunzima boyilo lwesekethe kunye nokusebenza okufunayo. Iileya eziqinileyo ngokuqhelekileyo ziquka i-FR-4 eqhelekileyo okanye i-laminates yobushushu obuphezulu, ngelixa iileya eziguquguqukayo ziyi-polyimide okanye izinto ezifanayo eziguquguqukayo. Ukuqinisekisa uxhulumaniso olufanelekileyo lombane phakathi kweengqimba eziqinileyo kunye neziguquguqukayo, uhlobo olulodwa lwe-adhesive ebizwa ngokuba yi-anisotropic conductive adhesive (ACA) isetyenziswa. Olu luhlu lubonelela ngokudibanisa kombane kunye noomatshini, ukuqinisekisa ukusebenza okuthembekileyo.

Ukuqonda ubume be-PCB eqinile-eguquguqukayo yokupakisha, nantsi ulwahlulo lwebhodi yebhodi ye-PCB ene-4:

Umaleko ophezulu:
Imaski yesolder eluhlaza ngumaleko okhuselayo osetyenziswa kwi-PCB (iBhodi yeSekethe eprintiweyo)
Uluhlu loku-1 (Uluhlu loMqondiso):
Isiseko somaleko weCopper kunye nemigca yeCopper ePlated.
Umaleko 2 (Umaleko wangaphakathi/ umaleko wedielectric):
I-FR4: Le yinto eqhelekileyo yokugquma i-insulating esetyenziswa kwii-PCB, ibonelela ngenkxaso yomatshini kunye nokuhlukaniswa kombane.
Umaleko 3 (Flex Layer):
I-PP: I-Polypropylene (PP) i-adhesive layer inokubonelela ngokhuseleko kwibhodi yesiphaluka
Uluhlu lwesi-4 (uMaleko oFleksi):
I-Cover layer PI: I-Polyimide (PI) yinto eguquguqukayo kunye ne-heat-resistant-resistant esetyenziswa njengoluhlu olukhuselayo oluphezulu kwinxalenye ye-flex ye-PCB.
Ikhava umaleko we-AD: nikezela ngokhuseleko kwizinto ezisisiseko ekonakalisweni yindalo yangaphandle, iikhemikhali okanye imikrwelo yomzimba.
Umaleko 5 (Flex Layer):
Umaleko we-Base Copper: Olunye umaleko wobhedu, oqhele ukusetyenziselwa ukulandelela umqondiso okanye ukuhanjiswa kwamandla.
Umaleko 6 (Flex Layer):
I-PI: I-Polyimide (i-PI) yinto eguquguqukayo kunye ne-heat-resistant-resistant esetyenziswa njengoluhlu lwesiseko kwinxalenye ye-flex ye-PCB.
Umaleko 7 (Flex Layer):
Umaleko weBase Copper: Ukanti omnye umaleko wobhedu, oqhele ukusetyenziselwa umkhondo wophawu okanye ukuhanjiswa kwamandla.
Uluhlu lwesi-8 (uMaleko oFlex):
I-PP: I-Polypropylene (PP) yinto eguquguqukayo esetyenziswa kwi-flex section ye-PCB.
I-Cowerlayer AD: ibonelela ngokhuseleko kwizinto ezisisiseko emonakalweni yindalo yangaphandle, iikhemikhali okanye imikrwelo yomzimba.
I-Cover layer PI: I-Polyimide (PI) yinto eguquguqukayo kunye ne-heat-resistant-resistant esetyenziswa njengoluhlu olukhuselayo oluphezulu kwinxalenye ye-flex ye-PCB.
Uluhlu lwesi-9 (Uluhlu lwangaphakathi):
I-FR4: Olunye uluhlu lwe-FR4 lubandakanyiwe kwinkxaso eyongezelelweyo yomatshini kunye nokuhlukaniswa kombane.
Uluhlu lwe-10 (Uluhlu olusezantsi):
Isiseko somaleko weCopper kunye nemigca yeCopper ePlated.
Umaleko ongezantsi:
I-soldermask eluhlaza.

Nceda uqaphele ukuba uvavanyo oluchanekileyo ngakumbi kunye neengqwalasela ezithile zoyilo, kuyacetyiswa ukuba udibane nomyili we-PCB okanye umenzi onokunika uhlalutyo oluneenkcukacha kunye neengcebiso ezisekelwe kwiimfuno zakho ezithile kunye nemiqobo.

Isishwankathelo:

I-Rigid flex PCB stackup sisisombululo esitsha esidibanisa iingenelo zezinto eziqinileyo kunye neziguquguqukayo zePCB. Ukuguquguquka kwayo, ukudibanisa kunye nokuthembeka kwenza ukuba ifaneleke kwizicelo ezahlukeneyo ezifuna ukulungiswa kwendawo kunye nokugoba okuguquguqukayo. Ukuqonda iziseko ze-rigid-flex stackups kunye nokwakhiwa kwazo kunokukunceda wenze izigqibo ezinolwazi xa uyila kunye nokuvelisa izixhobo zombane. Njengoko itekhnoloji iqhubeka nokuhambela phambili, imfuno yokugcinwa kwe-PCB eguquguqukayo ngokungathandabuzekiyo iya kunyuka, iqhube uphuhliso olungakumbi kweli candelo.