Xov xwm nyob rau lub Peb Hlis 24th, lub sijhawm Beijing, graphene hloov pauv hloov pauv lub vijtsam qhib lub sijhawm tshiab hauv cov neeg siv khoom siv hluav taws xob
Txij li thaum xyoo pua 21st, nrog rau kev loj hlob ntawm kev tshawb fawb thiab thev naus laus zis, peb lub neej tau hloov pauv txhua lub sijhawm. Los ntawm qhov nrov ntawm cov khoos phis tawj thiab xov tooj ntawm tes mus rau qhov hloov tshiab ntawm ntau yam khoom siv hluav taws xob, tib neeg cov kev xav tau kuj hloov pauv. Qhov tshwm sim ntawm lub vijtsam kov tshuab ua rau lub neej, kev kawm, thiab kev lom zem sai dua thiab yooj yim dua.
Muaj ntau ntau hom niaj hnub kov cov ntxaij vab tshaus: resistive kov cov ntxaij vab tshaus, capacitive kov cov ntxaij vab tshaus, infrared technology kov cov ntxaij vab tshaus, nto acoustic yoj technology kov cov ntxaij vab tshaus, thiab lwm yam. Txawm li cas los xij, txawm hais tias nws yog ib qho screen capacitive touch screen lossis ib qho screen kov, ib qho tseem ceeb ntawm cov khoom tseem ceeb yog ITO conductive txheej hauv nruab nrab.
Graphene tau dhau los ua cov khoom tsim tawm hauv kev lag luam tawm tshiab vim nws cov khoom siv hluav taws xob siab, siab toughness, siab zog, siab transparency thiab lwm yam zoo. Nws muaj cov ntsiab lus technical siab thiab dav daim ntawv thov kev cia siab. Lub vijtsam kov tau yooj yim ua los ntawm graphene es tsis txhob ntawm ITO tuaj yeem paub lub xov tooj ntawm tes thiab Kev sib koom ua ke zoo tshaj plaws ntawm cov khoos phis tawj yuav ua rau lub sijhawm tshiab ntawm kev hloov pauv hauv kev lag luam ntawm cov neeg siv khoom siv hluav taws xob.
ITO conductive txheej
Daim ntawv thov zoo ntawm graphene cov ntaub ntawv nyob rau hauv kov cov ntxaij vab tshaus
Flexible screen dab teg tshuab
Graphene yog cov khoom siv ob sab tshiab nrog tsuas yog ib txheej ntawm atomic thickness, thiab muaj cov khoom zoo heev hauv kev siv tshuab, cua sov, optics, thiab hluav taws xob. Graphene muaj qhov zoo ntawm daim ntawv thov hauv cov vijtsam kov, thiab nws cov txiaj ntsig tseem ceeb suav nrog:
(1) Graphene yuav luag tag nrho pob tshab, thiab lub teeb transmittance ntawm ib txheej graphene zaj duab xis los ntawm ultraviolet, pom rau infrared bands siab li 97.7 feem pua, yog li tsis muaj xim cam;
(2) Qhov tsis sib xws ntawm hluav taws xob conductivity thiab lub teeb xa hluav taws xob tuaj yeem daws tau zoo hauv graphene pob tshab electrode. Cov khoom siv graphene tsuas yog ib txheej ntawm cov pa roj carbon atom tuab, thiab nws cov khoom thauj mus los yog qhov siab heev, uas yog cov conductivity pom tam sim no. Cov khoom siv siab tshaj plaws
(3) Graphene muaj lub zog ua haujlwm siab heev thiab yog mos heev (nws tuaj yeem muab tais rau qee yam);
(4) Graphene muaj cov tshuaj ruaj khov, thiab nws qhov kev ua tau zoo tsis tshua muaj cuam tshuam los ntawm ib puag ncig;
(5) Graphene yog ib txheej monoatomic ntawm cov khoom siv carbon, uas tsis muaj tshuaj lom, tsis muaj kuab paug rau ib puag ncig, thiab ua tau raws li cov kev cai ntawm kev tiv thaiv ntsuab thiab ib puag ncig;
(6) Cov ntsiab lus ntawm cov ntsiab lus carbon nyob rau hauv cov xwm txheej yog nplua nuj heev, yog li kev siv graphene ua ib qho electrode muaj kev txwv tsawg dua ntawm cov khoom siv raw.
Cov thev naus laus zis tseem ceeb hauv graphene kov cov ntxaij vab tshaus
Cov yeeb yaj kiab loj hauv graphene feem ntau yog cog rau saum npoo ntawm cov hlau substrates xws li tooj liab ntawv ci ntawm qhov kub thiab txias. Rau kev siv graphene, nws yog ib qho tsim nyog los hloov graphene los ntawm kev loj hlob substrate mus rau qhov xav tau substrate nto. Cov txheej txheem ntawm graphene kov cov ntxaij vab tshaus tau muab faib ua plaub txheej txheem: graphene hloov pauv, hloov kho, qauv thiab kev npaj ntawm capacitive screen modules, thiab kev tshawb fawb thiab kev loj hlob tam sim no tseem tsom rau kev txhim kho plaub txheej txheem no.
01Key Technology ntawm Graphene Film Transfer
Muaj ntau txoj hauv kev hloov mus rau graphene zaj duab xis, thiab tam sim no muaj ob hom kev siv ntau tshaj plaws: PMMA kev txi txheej txheej hloov txoj kev thiab pyro-tso daim kab xev hloov. Cov txheej txheem qub: spin-coated polymethyl methacrylate (PMMA) nyob rau saum npoo ntawm graphene, etch tooj liab nrog acid, ces hloov cov graphene mus rau lub hom phiaj substrate, thiab thaum kawg tshem PMMA nrog acetone. Txoj kev no yooj yim rau kev khiav lag luam. Siv dav hauv chav kuaj; Txoj kev tom kawg: Laminate lub pyro-tso daim kab xev nrog graphene / tooj liab ntawv ci, etch tooj liab nrog acid tov, ces muab cov graphene / pyro-tso daim kab xev rau lub hom phiaj substrate, thiab thaum kawg dhau lub pyro-tso daim kab xev los ntawm tshav kub hloov mus rau tso tawm. graphene. Lub tshav kub-tso daim kab xev hloov tsheb yog yooj yim rau kev siv loj hauv cheeb tsam, thiab tib lub sijhawm, nws yooj yim los tswj cov duab ntawm cov graphene hloov pauv los ntawm kev txiav cov kab xev. Yog li ntawd, rau lub graphene kov npo, lub tshav kub-tso daim kab xev hloov graphene txoj kev yog ntau lub tswv yim.
02Key Technologies of Graphene Film Modification
Raws li kev thov sib txawv, cov graphene zaj duab xis kuj yuav tsum tau hloov kho thiab txhim kho. Rau graphene kov cov ntxaij vab tshaus, graphene zaj duab xis yuav tsum tau ntxiv dag zog rau cov yeeb yaj kiab ntawm cov yeeb yaj kiab thaum tswj lub teeb pom kev zoo. Nyob rau hauv cov ntaub ntawv ntawm ib tug tej yam carrier mus, ua kom lub carrier concentration ntawm graphene los ntawm doping hloov kho yog ib qho tseem ceeb txoj kev los txhim kho cov conductivity ntawm graphene. Lub valence band thiab conduction band ntawm intrinsic graphene yog nyob rau hauv conical kev sib cuag nyob rau hauv nruab nrab ntawm lub Brillouin cheeb tsam, yog li nws yog ib tug xoom-band gap semiconductor los yog semi-hlau; nws tuaj yeem hloov tau los ntawm qhov chaw adsorption, lattice vacancy, lattice hloov doping, thiab lwm yam. Band zog theem qauv, tsim cov nyhuv doping zoo ib yam li semiconductor. Tam sim no, muaj ntau hom graphene doping modifiers, feem ntau yog nitric acid, chloroauric acid, conductive polymer, thiab lwm yam. Cov kev hloov kho siv xws li soaking, fumigation, in-site compounding, thiab spin txheej.
03 Cov thev naus laus zis tseem ceeb rau graphene zaj duab xis qauv
Graphene yog cov khoom siv ob sab uas muaj cov pa roj carbon atoms thiab muaj tshuaj lom neeg ruaj khov. Feem ntau, nws yog ib qho nyuaj rau corrode graphene nrog acid thiab alkali. Yog li ntawd, nyob rau hauv tus txheej txheem ntawm kev siv capacitive kov screen nrog graphene, ib tug loj teeb meem yuav tsum tau ntsib: lub etching ntawm graphene yuav ua tau tiav raws li cov txheej txheem kov cov kab mob uas twb muaj lawm. . Txhawm rau ua kom tiav qhov etching ntawm graphene, txoj kev dav dav suav nrog ob yam: (1) Vim tias graphene yog cov khoom nyias nyias nrog tsuas yog ib qho atomic txheej tuab, lub zog loj tuaj yeem siv los tshem tawm cov graphite uas tsis xav tau (2) Graphene yog tsim los ntawm carbon. atoms, yog li nws tuaj yeem suav tias yog tshuaj lom neeg nrog oxygen thiab lwm yam khoom nyob rau hauv cov xwm txheej tshwj xeeb kom tshem tawm graphene. Raws li qhov no, muaj peb txoj kev etching rau graphene: laser etching, oxygen plasma etching, thiab oxygen ultraviolet etching. Ntawm lawv, graphene laser etching txoj kev muaj ib tug kuj yooj yim ua txoj kev. Nyob rau tib lub sijhawm, cov khoom lag luam uas twb muaj lawm tuaj yeem paub txog cov qauv graphene ntawm qhov kev txiav txim ntawm 10 microns, uas ua tau raws li qhov kev thov rau cov khoom loj hauv cov chaw tsim khoom.
04Key Technologies ntawm Graphene Kov Module
Lub graphene kov module tsim cov txheej txheem tuaj yeem muab faib ua cov txheej txheem pem hauv ntej-kawg sensor thiab txheej txheem rov qab-kawg. Lub hom phiaj ntawm cov txheej txheem pem hauv ntej-kawg yog kom paub txog lub sensor ntawm lub capacitive touch screen, thiab cov txheej txheem rov qab kawg yog los khi lub sensor rau lub nti kov los tsim ib lub graphene capacitor. Tiav lawm kov screen. Cov txheej txheem tseem ceeb muaj xws li: silk screen thiab etching ntawm nyiaj muab tshuaj txhuam, kev sib txuas ntawm graphene sensor thiab kov nti, npog kev sib txuas thiab defoaming. Ntawm lawv, cov graphene sensor thiab cov nti kov tau txuas nrog hluav taws xob los ntawm lub rooj tsav xwm hloov pauv hloov pauv (FPC), uas yuav tsum tau khi thiab khi nrog ACF kua nplaum los ntawm qee qhov kev kub siab thiab kub kub.
Summary thiab outlook
Graphene cov ntaub ntawv muaj dav daim ntawv thov kev cia siab nyob rau hauv lub teb ntawm kov cov ntxaij vab tshaus vim lawv tus yam ntxwv. Cov tuam txhab ua lag luam hauv tsev thiab txawv teb chaws twb tau pib ua patent layouts nyob rau hauv lwm yam kev lag luam, tab sis tseem muaj ntau yam teeb meem yuav tsum tau daws nyob rau hauv loj zus tau tej cov graphene kov cov ntxaij vab tshaus. . Yog li ntawd, cov tuam txhab cuam tshuam hauv tsev tseem yuav tsum tau nce R & D peev kom muaj lub sijhawm los cuam tshuam los ntawm patent blockade ntawm cov neeg loj, thiab tib lub sijhawm ntxiv dag zog rau kev koom tes nrog cov tsev kawm ntawv qib siab lossis cov tsev tshawb fawb tshawb fawb, thiab nquag txhawb kev koom ua ke ntawm kev lag luam, kev kawm thiab kev tshawb fawb, tsom rau kev hloov pauv, hloov kho, thiab cov duab ntawm graphene. Txhawm rau txhawm rau ua kom cov txheej txheem kev lag luam ntawm graphene nyob rau hauv qhov screen kov hauv kuv lub teb chaws, nws yog ib qho tsim nyog yuav tsum nrhiav kev txhim kho tseem ceeb hauv cov txheej txheem kev npaj tshuaj thiab capacitive screen module npaj.
