Tuam Tshoj Wafer Manufacturers, lwm tus neeg, Hoobkas
Dab tsi yog semiconductor wafer?
Lub semiconductor wafer yog ib daim nyias nyias ntawm cov khoom siv semiconductor uas yog lub hauv paus rau kev tsim cov khoom siv hluav taws xob sib xyaw (ICs) thiab lwm yam khoom siv hluav taws xob. Lub wafer muab ib qho chaw tiaj tus thiab zoo ib yam ntawm ntau yam khoom siv hluav taws xob tsim.
Cov txheej txheem tsim khoom wafer suav nrog ntau cov kauj ruam, suav nrog kev loj hlob ib qho loj loj ntawm cov khoom siv semiconductor, hlais cov siv lead ua rau hauv nyias wafers siv lub pob zeb diamond pom, thiab tom qab ntawd polishing thiab ntxuav cov wafers kom tshem tawm tej yam tsis xws luag lossis impurities. Cov txiaj ntsig wafers muaj qhov tiaj tiaj thiab du, uas yog qhov tseem ceeb rau cov txheej txheem tom ntej fabrication.
Thaum cov wafers tau npaj lawm, lawv tau dhau los ua cov txheej txheem ntawm cov khoom siv semiconductor, xws li photolithography, etching, deposition, thiab doping, los tsim cov qauv sib txawv thiab cov txheej txheem tsim cov khoom siv hluav taws xob. Cov txheej txheem no rov ua dua ntau zaus ntawm ib qho wafer los tsim ntau yam sib xyaw ua ke lossis lwm yam khoom siv.
Tom qab cov txheej txheem fabrication tiav, tus neeg daim nyias nyias raug cais los ntawm dicing lub wafer raws li predefined kab. Cov chips sib cais yog tom qab ntawd ntim los tiv thaiv lawv thiab muab kev sib txuas hluav taws xob rau kev koom ua ke rau hauv cov khoom siv hluav taws xob.
Cov khoom sib txawv ntawm wafer
Semiconductor wafers feem ntau yog tsim los ntawm ib leeg-crystal silicon vim nws cov nplua nuj, cov khoom siv hluav taws xob zoo, thiab kev sib raug zoo nrog cov txheej txheem tsim khoom semiconductor. Txawm li cas los xij, nyob ntawm cov ntawv thov tshwj xeeb thiab cov kev xav tau, lwm cov ntaub ntawv kuj tuaj yeem siv los ua wafers. Nov yog qee qhov piv txwv:
Silicon carbide (SiC) yog qhov dav bandgap semiconductor khoom uas muaj lub cev zoo dua piv rau cov khoom siv ib txwm muaj. Nws pab txo qhov loj thiab qhov hnyav ntawm cov khoom siv sib cais, cov qauv, thiab txawm tias tag nrho cov tshuab, thaum txhim kho kev ua haujlwm.
Cov yam ntxwv tseem ceeb ntawm SiC:
- -Wide Bandgap:SiC's bandgap yog li peb npaug ntawm silicon, tso cai rau nws ua haujlwm ntawm qhov kub siab dua, txog li 400 ° C.
- -High Critical Breakdown Field:SiC tuaj yeem tiv taus txog li kaum npaug ntawm qhov hluav taws xob ntawm silicon, ua rau nws zoo tagnrho rau cov khoom siv hluav taws xob siab.
- -High Thermal conductivity:SiC ua tau zoo dissipates cua sov, pab cov cuab yeej tswj kom pom kev ua haujlwm kub thiab ua kom lawv lub neej ntev.
- -High Saturation Electron Drift Velocity:Nrog ob npaug ntawm qhov nrawm nrawm ntawm silicon, SiC ua kom muaj kev hloov pauv ntau dua, pab hauv cov khoom siv me me.
Daim ntawv thov:
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-Power Electronics:SiC cov khoom siv hluav taws xob ua tau zoo nyob rau hauv high-voltage, high-tam sim no, high-temperature, thiab high-frequency ib puag ncig, ho txhim khu lub zog conversion efficiency. Lawv tau siv dav hauv tsheb fais fab, chaw nres tsheb them nyiaj, cov tshuab photovoltaic, tsheb thauj mus los, thiab cov phiajcim ntse.
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- Kev sib txuas lus Microwave:SiC-based GaN RF cov cuab yeej tseem ceeb heev rau kev sib txuas lus wireless, tshwj xeeb tshaj yog rau 5G hauv paus chaw nres tsheb. Cov khoom siv no ua ke nrog SiC qhov zoo tshaj plaws thermal conductivity nrog GaN's high-frequency, high-power RF tso zis, ua rau lawv nyiam xaiv rau tiam tom ntej high-frequency telecom networks.
Gallium nitride (GaN)yog ib tug thib peb tiam dav bandgap semiconductor khoom nrog ib tug loj bandgap, siab thermal conductivity, siab electron saturation drift tshaj tawm, thiab zoo heev tawg teb yam ntxwv. GaN pab kiag li lawm muaj kev vam meej daim ntawv thov nyob rau hauv high-frequency, high-ceev, thiab high-power cheeb tsam xws li LED zog-txuag teeb pom kev zoo, laser projection zaub, hluav taws xob tsheb, ntse daim phiaj, thiab 5G kev sib txuas lus.
Gallium arsenide (GaAs)yog cov khoom siv hluav taws xob semiconductor paub txog nws qhov siab zaus, siab electron txav mus los, siab zog tso zis, tsis tshua muaj suab nrov, thiab zoo linearity. Nws yog dav siv hauv optoelectronics thiab microelectronics industries. Hauv optoelectronics, GaAs substrates yog siv los tsim LED (lub teeb-emitting diodes), LD (laser diodes), thiab cov khoom siv photovoltaic. Hauv microelectronics, lawv tau ua haujlwm hauv kev tsim cov MESFETs (hlau-semiconductor field-effect transistors), HEMTs (high electron mobility transistors), HBTs (heterojunction bipolar transistors), ICs (integrated circuits), microwave diodes, thiab Hall effect devices.
Indium phosphide (InP) hmoovyog ib qho tseem ceeb ntawm III-V compound semiconductors, paub txog nws cov khoom siv hluav taws xob siab, kev tiv thaiv hluav taws xob zoo, thiab dav bandgap. Nws yog dav siv hauv optoelectronics thiab microelectronics industries.
