Lub silkscreen, tseem hu ua lub ntsej muag daim npog ntsej muag, yog cov ntawv nyeem lossis cov cim luam tawm ntawm PCB siv tus cwj mem tshwj xeeb los txheeb xyuas cov khoom, kev sib cuag, cov cim npe thiab ua kom yooj yim rau kev sib dhos. Ua raws li daim ntawv qhia qhia cov pej xeem PCB thiab debugging, txheej saum toj kawg nkaus no ua lub luag haujlwm tseem ceeb ntawm kev ua haujlwm, kev tsim khoom lag luam, kev tswj hwm thiab kev zoo nkauj.
Ntsiab Function.
Ntawm cov rooj zaum ntom ntom pob zeb nyob ntau pua pua feeb pab ua kom muaj kev sib txuas ntawm cov khoom sib txuas hauv qab.
1. Kev txheeb xyuas cov khoom
Cov lej, qhov tseem ceeb (10K, 0.1uF) thiab cov cim polarity (-,+) yog sau rau ntawm ib sab ntawm cov khoom siv los pab kom pom kev pom sai sai thaum kev sib dhos, tshuaj xyuas thiab kev debugging.
2. Cov ntaub ntawv Board
Cov ntsiab lus zoo li PCB tus lej, version, chaw tsim khoom, pawg thawj coj saib ua haujlwm (suab amplifier, fais fab mov) feem ntau txhob lo lo ntxhuav tshuaj ntsuam xyuas rau kev taug qab thiab kev pabcuam muab tso rau boards.
3. Connector Pinouts
Pin numbering mediated los ntawm cov lus dab neeg pab muab tso rau ntawm cable connectors rau interface nrog onboard interfaces (USB, HDMI).
4. Cov ntsiab lus ntawm Pawg Thawj Coj
Ntug txiav kab prominently etched qhia qhov ntev, orientation thiab boarders pab panelization thiab de-paneling.
5. Sib dhos Aids Fiducials cov cim ntawm ib sab ntawm cov cuab yeej ua haujlwm yog xoom cov ntsiab lus rau kev siv lub tshuab optical xaiv thiab qhov chaw kom raug cov khoom siv.
6. Thermal Indicators Xim hloov qhov kub thiab txias rhiab cov lus dab neeg tuaj yeem pom cov teeb meem kub dhau ntawm cov laug cam.
7. Hom Lub Npe Lub Npe Logos, taglines thiab cov cim nraaj pab txheeb xyuas cov cuab yeej OEMs ua haujlwm txhawm rau txhim kho kev lees paub. Kev cai artistic legends kuj ntxiv aesthetic nplua nuj.
Nrog miniaturization ua kom muaj kev ua haujlwm ntau dua ib square inch, silkscreen qhia qhia cov neeg siv thiab cov kws ua haujlwm thoob plaws PCB lifecycle.
Kev tsim kho thiab khoom siv
Lub silkscreen muaj xws li epoxy-raws li number case luam tawm ntawm lub npog ntsej muag uas tso cai rau lub hauv paus ntsuab PCB los muab qhov sib piv hauv qab. Txhawm rau xa cov kev daws teeb meem ntse los ntawm CAD-hloov cov ntaub ntawv gerber, tshwj xeeb tshuaj ntsuam luam ntawv, inkjet lossis photolithography cov txheej txheem luam tawm cov lus dab neeg.
Cov khoom xws li tshuaj lom neeg / abrasion tsis kam, xim stability, adhesion thiab saj zawg zog txiav txim siab cov khoom haum:
Epoxy - Feem ntau rau cov nqi, txheej txheem compatibility
Silicone - Ua rau kub kub
Polyurethane - Yooj yim, UV resistant
Epoxy-Polyester - Ua ke lub zog ntawm epoxy & polyester
Dawb yog cov qauv lus dab neeg xim nrog dub, xiav, liab thiab daj kuj tau nrov. Xaiv-thiab-chaw machines nrog downward saib lub koob yees duab txawm li cas los xij nyiam lub ntsej muag dawb lossis daj daj nyob rau hauv qab kom txaus qhov sib txawv los txheeb xyuas qhov chaw.
Advanced PCB technologies ntxiv txhawb cov lus dab neeg muaj peev xwm:
Embedded Inks- Inks infused rau hauv substrate xa cov cim resistant rau nto hnav / tsim kua muag
Raised Ink- Ua kom ruaj khov tactile lus dab neeg zoo tagnrho rau cov ntawv sau ntawm cov khoom sib txuas, cov keyboards thiab lwm yam.
Glow Legends - Muaj luminescent hmoov them los ntawm lub teeb kom ci rau hauv qhov tsaus ntuj pab pom kev
Hidden Legends- Ink pom tsuas yog nyob rau hauv UV backlighting khaws cia tsis pub lwm tus paub
Peel-off - Ntau txheej thim rov qab cov lus dab neeg nthuav tawm cov ntaub ntawv raws li xav tau los ntawm txhua txheej nplaum
Ua hauj lwm zoo tshaj cov cim cim, ntau yam lus dab neeg inks txhawb kev ua haujlwm ntxiv.
Qhov tseem ceeb hauv Kev Tsim Khoom
Lub PCB silkscreen eases automation tsav ceev ceev sib dhos ntawm cov laug cam. Xaiv thiab tso cov tshuab cia siab rau cov txheej txheem thiab cov khoom siv hauv cov lus dab neeg rau:
Centering boards
Kev txheeb xyuas tus lej/tus nqi los ntawm kev paub txog tus cwj pwm optical
Paub meej tias muaj / tsis muaj qhov chaw
Tshawb xyuas polarity alignment
Qhia qhov tseeb ntawm qhov chaw
Qhov no ua kom muaj qhov yuam kev-dawb thauj khoom ntawm cov khoom me me me me li 0201 (0.6mm x 0.3mm) loj!
Tom qab cov pej xeem, automated optical inspection (AOI) koob yees duab dua siv cov lus dab neeg kom validate:
Kho cov khoom tivthaiv hom / nqi
Kev taw qhia kom raug
Specifications txuam (5% resistor kam rau ua thiab lwm yam)
Board tiav zoo tiv thaiv fiducials
Lub tshuab nyeem tau matrix barcodes thiab QR cov lej etched hauv cov lus dab neeg ntxiv rau pab serialize boards txuas lawv mus rau cov ntaub ntawv xeem.
Nyob deb ntawm qhov muag tsis pom, cov lus qhia silk screen tsav automation, traceability thiab zoo thoob plaws ntau lawm.
PCB Standards
Kev lag luam cov cai tswj hwm qee qhov yuav tsum tau ua ntawm silkscreen kom yooj yim sib cuam tshuam thiab kev saib xyuas thaj chaw rau hluav taws xob.
IPC-7351 - Cov Lus Qhia Tseem Ceeb rau Nto Mount Tsim thiab Av Qauv Qauv
Compulsory Cheebtsam ID nrog tus tsim siv (R8, C3), hom (RES, CAP) thiab tus nqi (10K, 2u2).
Lub npe ntawm pawg thawj coj saib, cov ntaub ntawv thaiv lub npe
Cov cim tshwj xeeb zoo li hauv av
IPC-6012 - Kev Tsim Nyog thiab Kev Ua Haujlwm ntawm Rigid Printed Boards
Khoom siv (FR4)
Hnub tim code (YYYY-MM-DD)
Panelization cov ntsiab lus
Lub teb chaws / tuam txhab keeb kwm
Barcode / 2D code
ANSI Y32.16 - Graphical Symbols for Electrical and Electronics Diagrams
Cov cim hluav taws xob
Cov cim tiv thaiv ntiaj teb
Electrostatic ceeb toom logos
Standardized visual identifiers ceev kev daws teeb meem thiab hloov kho dua tshiab hauv daim teb.
Common Footprint Symbols
Reusing pov thawj hneev taw silkscreen cov cim rau cov khoom nquag nquag tswj xyuas qhov sib xws ntawm PCB tsim pab sib dhos.
| Cheebtsam | Cim | Description | | ———–| —————| | Resistor |
| Rectangular outline qhia cov khoom siv, tus nqi, kam rau ua thiab wattage | | Capacitor |
| Semicircular radial/stacked layout nrog tus nqi capacitance | | Diode |
| Xub kab qhia cov kev taw qhia ntawm cov pa tam sim no ntws | | LED |
| Matches LED pob zoo li; qhia cathode/anode | | Crystal |
| Stylized hexagonal / parallelogram quartz siv lead ua nrog av pins | | Txuas |
| Tsev neeg silhouette (USB, HDMI) nrog tus lej pins | | Testpoint |
| Circular probing pads rau validation thiab diagnostics | | Pad |
| Ntug marker rau nto mount ntaus nruab nrab hneev taw | | Kev Ntseeg |
| Kev sau npe crosshair txhawb kev kho qhov muag kho qhov muag |
Raws li cov ntsiab lus, cov cim tsim nyog pab kev lees paub.
Qhov tseem ceeb ntawm Silkscreen Quality
Nrog Densifying PCBs, reprepucing zoo cov lus nyuaj. Kev ua haujlwm siab tshaj tawm lus dab neeg yuav tsum xa:
1. Cov cim qhia meej meej ua raws li cov ntaub ntawv tsaws, cov npoo thiab lwm yam tuav 1: 1 phim rau hauv qab nta.
2. Legibility crisp, siab sib piv cov cim tau yooj yim nyeem tau; Cov ntawv me me ≥1.0mm qhov siab, Cov kab zoo ≥0.15mm dav.
3. Durability Adhere flawlessly rau ntau yam ntaub ntawv puag; tiv thaiv kev ua haujlwm / kev ua haujlwm nyuaj.
4. Kev Sau Npe Qhov Loj yog qhov qub CAD uas tso cai rau cov pob tshab sib tshooj rau kev tshuaj xyuas automated.
Cov lus dab neeg tsis zoo nrog cov cim fuzzy, skewed kev sib raug zoo los yog kev sib raug zoo tsis txaus ua rau muaj kev tsis sib haum xeeb lossis kev ua tsis tiav. Li no zoo ib yam silkscreen zoo underscores PCB dependability.
Txawm tias me me cov cim tseem ceeb tseem ceeb los coj lub hom phiaj ua haujlwm.
Kev Tawm Tsam Tawm Tsam
Kev txhim kho tseem ceeb hauv precision luam ntawv nthuav dav silkscreen muaj peev xwm:
Embedded Ink: faus kom zoo nyob nruab nrab ntawm cov khaubncaws sab nraud povtseg, embedded legends tsis txhob hnav tawm kev txhim kho ruggedness xav tau nyob rau hauv aerospace, tiv thaiv thiab tsheb electronics.
Hidden Legends: Pom tsis pom ultraviolet florescent cov cim tsuas pom nyob rau hauv UV backlighting pab nkaum cov ntaub ntawv muaj txiaj ntsig zoo xws li cov passwords ntawm cov kab ke ruaj ntseg.
Peel Layers: Txhawb cov ntawv nplaum uas tso cai rau cov neeg siv xaiv nthuav tawm cov ntsiab lus ntxiv ntawm kev thov.
Raised Ink: Tsim cov cim tactile ruaj khov zoo tagnrho rau kev sau cov nyees khawm, toggles thiab interface ports nyob rau hauv tib neeg cov ntaub ntawv.
Artistic kov: Vibrant xim thiab cov duab kev cai qiv kom zoo nkauj nplua nuj thaum khaws cia ua haujlwm.
Kev siv cov kev nce qib no, niaj hnub no lub silkscreen txhawb nqa PCBs los qhia, ruaj ntseg, pab, thiab txawm lom zem rau cov neeg siv thaum tuav tus cwj pwm tseem ceeb.
Piv txwv
Cov lus dab neeg kev tsim kho tshiab tshwm sim thoob plaws thaj chaw:
SpaceTech - NASA's Mars Perseverance rover nyob rau hauv 2021 nqa PCBs nrog cov lus dab neeg uas muaj zog ruaj khov rau kev ua haujlwm hnyav.
AutoTech - German tus neeg muag khoom pib Bosch hauv 2019 tau nthuav tawm cov PCBs ntse nrog cov ntawv nplaum tshem tawm qhia cov ntaub ntawv kuaj mob nkaus xwb rau cov tswv lag luam tso cai.
MedTech - Abbott's FreeStyle Libre txuas ntxiv cov piam thaj los saib xyuas kev ua si nawv tsa cov khawm tactile tso cai yooj yim dua los ntawm cov neeg mob ntshav qab zib tsis pom kev.
5G Telecom - Huawei tus flagship Kirin 9000 mobile chipset muaj ntau xim lus dab neeg hais txog cov npe xws li daim ntawv thov processor, 5G modem thiab AI logic.
Kev Ua Si - Nvidia's GeForce RTX daim npav daim npav series muaj cov txiaj ntsig zoo ntawm kev tshuaj ntsuam xyuas nyiaj thiab cov cim xim hlau xa cov neeg nyiam thov rov hais dua.
IoT Wearables - Fitbit Charge smart band packs multi-sensor PCBs nrog cov cim ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom.
Tseeb, lub vibrant silkscreen sib npaug hauv tsev hauv cov neeg siv khoom siv lossis cov tshuab tshwj xeeb tseem txhawb nqa cov neeg siv kev paub thoob plaws ib puag ncig.
Evolution of Capabilities
Pushed los ntawm inexorable kev lag luam xav tau, lus dab neeg innovation tseem unfolding tshiab lub sij hawm.
Cov lus nug nquag
Q1. Koj puas tuaj yeem silkscreen ob sab ntawm PCB?
Yog lawm, feem ntau yog sab saum toj ntawm lub ntsej muag silkscreen nqa cov cim tseem ceeb (rau cov neeg nyob hauv cheeb tsam) thaum sab hauv qab suav nrog cov ntawv sau uas cuam tshuam rau kev tsim khoom xws li vaj huam sib luag ciam teb lossis cov lus qhia routing. Qhov no tsis txhob cluttering lub sab saum toj los ua ke saib.
Q2. Puas yog daim npog ntsej muag tiv thaiv cov lus dab neeg silkscreen?
Lub npog ntsej muag muab tso rau ntawm cov tooj liab liab qab ua ntej silkscreen muab tshuaj lom neeg thiab cov khoom siv tiv thaiv kev tiv thaiv cov lus dab neeg tsis yooj yim hauv qab los ntawm kev ua cov kuab tshuaj thiab kev sib koom ua ke. Li no ob qho tib si ua haujlwm sib koom ua ke nrog lub npog ntsej muag insulating lem thiab cov lus dab neeg qhia cov pej xeem.
Q3. Lub thickness ntawm silkscreen yog dab tsi?
Cov kab mob silkscreen number case feem ntau ntsuas ntawm 3-8 mils (75 - 200 microns). Thicker coatings saum toj no 10 mils tuaj yeem cuam tshuam rau qhov chaw zaum thaum lub thinner tsis txaus tsis tiv thaiv cov lus dab neeg. Optimizing thickness kom txaus resilience.
Q4. Koj puas tuaj yeem ua vaj huam sib luag hauv txheej silkscreen?
Qhov tseeb panelization nta xws li pawg thawj coj saib, cov tabs tawg lossis qhov cuab yeej pab hauv kev teeb tsa PCBs rau batch ua / tuav. Cov ntsiab lus ntawm pab pawg yog qhov zoo tshaj plaws cim nyob rau hauv lub silkscreen uas zaum saum uas tso cai rau pom zoo dua cov txheej sab hauv.
Q5. Puas yog ntsuab silkscreens nyiam?
Thaum cov xim pom tau yooj yim ua haujlwm, cov kab sib sau ua ke nyiam cov lus dab neeg dawb lossis ntsuab dhau ntawm cov neeg tsis khoom lossis cov xim tsaus nti uas pab kev lees paub los ntawm cov koob yees duab hauv qab. Txawm li cas los xij, kev txhim kho lub koob yees duab tshiab tau kov yeej cov kev txwv, qhib cov kev xaiv xim xim.
Kev hloov kho kom nce kev tsim khoom thiab kev ua haujlwm nyuaj, qhov tsis zoo ntawm PCB silkscreen nce mus rau lub sijhawm xa khoom zoo nkauj los ntawm kev yooj yim! Nws txhawb nqa cov neeg siv khoom thiab cov kws tsim khoom sib xws thoob plaws kev tsim khoom thiab cov khoom lag luam lifecycles txhawm rau txhim kho cov khoom siv hluav taws xob ntxiv. Tseeb tiag, ua rau cov neeg tsis ntseeg siab hais lus, cov ntawv luam me me uas tau tawg thoob plaws hauv cov laug cam hais lus ntim ua rau lub cacophony ntawm cov txuj ci niaj hnub no zoo kawg nkaus!
Post lub sij hawm: Dec-06-2023
Rov qab
