Flat Panel Display (FPD) tau dhau los ua qhov tseem ceeb ntawm TV yav tom ntej.Nws yog tus qauv dav dav, tab sis tsis muaj lub ntsiab lus nruj hauv ntiaj teb.Feem ntau, hom zaub no nyias thiab zoo li lub vaj huam sib luag tiaj tus.Muaj ntau hom vaj huam sib luag tiaj tiaj.Raws li cov zaub nruab nrab thiab kev ua haujlwm, muaj cov kua siv lead ua kua (LCD), plasma zaub (PDP), electroluminescence zaub (ELD), organic electroluminescence zaub (OLED), teb emission zaub (FED), projection zaub, thiab lwm yam. Ntau yam khoom siv FPD yog tsim los ntawm granite.Vim granite tshuab puag tau zoo dua precision thiab lub cev muaj zog.
txoj kev loj hlob
Piv nrog rau cov tsoos CRT (cathode ray tube), lub vaj huam sib luag tiaj tiaj muaj qhov zoo ntawm nyias, lub teeb, tsis siv hluav taws xob, hluav taws xob tsawg, tsis muaj flicker, thiab muaj txiaj ntsig zoo rau tib neeg kev noj qab haus huv.Nws tau dhau CRT hauv kev muag khoom thoob ntiaj teb.Los ntawm 2010, nws tau kwv yees tias qhov piv ntawm tus nqi muag ntawm ob yuav ncav cuag 5: 1.Nyob rau hauv lub xyoo pua 21st, lub vaj huam sib luag tiaj tiaj yuav dhau los ua cov khoom tseem ceeb hauv cov zaub.Raws li kev kwv yees ntawm lub npe nrov Stanford Resources, lub ntiaj teb cov vaj huam sib luag vaj huam sib luag ua lag luam yuav nce los ntawm 23 billion US las hauv 2001 txog 58.7 billion US las hauv 2006, thiab qhov nruab nrab txhua xyoo kev loj hlob yuav ncav cuag 20% hauv 4 xyoo tom ntej.
Zaub technology
Cov vaj huam sib luag tiaj tiaj tau muab faib ua cov teeb pom kev zoo emitting thiab passive teeb pom kev zoo.Cov yav tas yog hais txog cov khoom siv uas cov zaub nruab nrab nws tus kheej emits lub teeb thiab muab cov hluav taws xob pom, uas suav nrog cov plasma zaub (PDP), lub tshuab nqus tsev fluorescent (VFD), cov zaub emission (FED), electroluminescence zaub (LED) thiab organic teeb emitting. Diode zaub (OLED)) Tos.Qhov kawg txhais tau hais tias nws tsis tawm lub teeb los ntawm nws tus kheej, tab sis siv cov khoom nruab nrab los hloov kho los ntawm cov teeb liab hluav taws xob, thiab nws cov yam ntxwv kho qhov muag hloov, hloov lub teeb pom kev zoo thiab lub teeb tawm los ntawm cov khoom siv hluav taws xob sab nraud (backlight, projection light source. ), thiab ua nws ntawm lub vijtsam zaub lossis npo.Cov khoom siv tso saib, suav nrog cov kua siv lead ua kua (LCD), micro-electromechanical system zaub (DMD) thiab hluav taws xob ink (EL) zaub, thiab lwm yam.
LCD
Cov kua siv lead ua kua muaj xws li passive matrix kua siv lead ua zaub (PM-LCD) thiab cov kua siv lead ua kua matrix (AM-LCD).Ob leeg STN thiab TN kua siv lead ua zaub muaj rau passive matrix kua siv lead ua zaub.Nyob rau xyoo 1990, active-matrix kua siv lead ua zaub tshuab tau tsim sai heev, tshwj xeeb tshaj yog nyias zaj duab xis transistor kua siv lead ua zaub (TFT-LCD).Raws li cov khoom hloov pauv ntawm STN, nws muaj qhov zoo ntawm cov lus teb ceev ceev thiab tsis muaj flickering, thiab yog dav siv nyob rau hauv portable computers thiab workstations, TVs, camcorders thiab handheld video game consoles.Qhov sib txawv ntawm AM-LCD thiab PM-LCD yog tias yav dhau los tau hloov cov khoom siv ntxiv rau txhua pixel, uas tuaj yeem kov yeej kev cuam tshuam thiab tau txais qhov sib txawv siab thiab siab daws teeb meem.Tam sim no AM-LCD tau txais amorphous silicon (a-Si) TFT hloov khoom siv thiab cov txheej txheem khaws cia, uas tuaj yeem tau txais qib siab grey thiab paub cov xim tiag tiag.Txawm li cas los xij, qhov xav tau kev daws teeb meem siab thiab cov pixels me me rau lub koob yees duab siab ceev thiab cov ntawv siv qhov projection tau tsav txoj kev loj hlob ntawm P-Si (polysilicon) TFT (thin film transistor) cov lus qhia.Kev txav mus los ntawm P-Si yog 8 txog 9 npaug siab dua li ntawm a-Si.Qhov me me ntawm P-Si TFT tsis yog tsuas yog haum rau cov khoom siv high-density thiab high-resolution, tab sis kuj peripheral circuits tuaj yeem ua ke ntawm substrate.
Tag nrho cov nyob rau hauv tag nrho cov, LCD yog haum rau nyias, lub teeb, me me thiab nruab nrab-loj zaub nrog tsawg zog noj, thiab yog dav siv nyob rau hauv cov khoom siv hluav taws xob xws li phau ntawv computers thiab xov tooj ntawm tes.30-nti thiab 40-nti LCDs tau tsim tiav, thiab qee qhov tau muab tso rau hauv kev siv.Tom qab loj-scale ntau lawm ntawm LCD, tus nqi yog tsis tu ncua txo.Lub 15-nti LCD saib yog muaj rau $ 500.Nws txoj kev loj hlob yav tom ntej yog los hloov cov cathode zaub ntawm PC thiab siv rau hauv LCD TV.
Plasma zaub
Plasma zaub yog lub teeb pom kev zoo uas pom tau los ntawm lub hauv paus ntsiab lus ntawm cov pa roj (xws li cua) tawm.Plasma cov lus qhia muaj qhov zoo ntawm cov kab hluav taws xob cathode, tab sis yog tsim los ntawm cov qauv nyias heev.Cov khoom loj loj yog 40-42 ntiv tes.50 60 nti khoom yog nyob rau hauv txoj kev loj hlob.
nqus fluorescence
Lub tshuab nqus tsev fluorescent yog cov khoom siv dav siv hauv cov khoom siv suab / video thiab cov khoom siv hauv tsev.Nws yog ib tug triode electron raj hom lub tshuab nqus tsev tso saib ntaus ntawv uas encapsulates lub cathode, kab sib chaws thiab anode nyob rau hauv lub tshuab nqus tsev raj.Nws yog hais tias cov electrons emitted los ntawm lub cathode yog accelerated los ntawm qhov zoo voltage thov rau daim phiaj thiab cov anode, thiab txhawb cov phosphor coated ntawm lub anode kom emit lub teeb.Daim phiaj txais ib lub qauv honeycomb.
electroluminescence)
Electroluminescent zaub yog tsim los ntawm cov khoom siv-state nyias-film technology.Ib txheej insulating yog muab tso rau ntawm 2 daim hlau conductive thiab ib txheej nyias electroluminescent tso rau.Cov cuab yeej siv zinc-coated los yog strontium-coated daim hlau nrog dav emission spectrum li electroluminescent Cheebtsam.Nws cov txheej txheej electroluminescent yog 100 microns tuab thiab tuaj yeem ua tiav cov duab pom tseeb tib yam li cov organic teeb emitting diode (OLED) zaub.Nws raug tsav voltage yog 10KHz, 200V AC voltage, uas yuav tsum tau kim tsav tsheb IC.Qhov kev daws teeb meem siab microdisplay siv lub tswv yim tsav tsheb array tau ua tiav tiav.
coj
Lub teeb-emitting diode qhia muaj ntau lub teeb-emitting diodes, uas tuaj yeem ua monochromatic lossis ntau xim.High-efficiency xiav lub teeb-emitting diodes tau dhau los ua, ua rau nws muaj peev xwm tsim cov xim loj-screen LED zaub.LED zaub muaj cov yam ntxwv ntawm lub teeb ci siab, kev ua haujlwm siab thiab lub neej ntev, thiab tsim nyog rau cov duab loj loj rau kev siv sab nraum zoov.Txawm li cas los xij, tsis muaj qhov qhia nruab nrab rau cov saib lossis PDAs (lub khoos phis tawj tuav) tuaj yeem ua nrog cov thev naus laus zis no.Txawm li cas los xij, LED monolithic integrated circuit tuaj yeem siv los ua monochromatic virtual zaub.
MEMS
Qhov no yog microdisplay tsim siv MEMS thev naus laus zis.Nyob rau hauv cov ntaub ntawv no, microscopic mechanical structures yog tsim los ntawm kev ua cov khoom siv hluav taws xob thiab lwm yam ntaub ntawv siv cov txheej txheem semiconductor.Hauv cov khoom siv digital micromirror, cov qauv yog micromirror txhawb nqa los ntawm pob khawm.Nws cov hinges yog actuated los ntawm tsub nqi ntawm daim hlau txuas nrog ib qho ntawm lub cim xeeb hauv qab no.Qhov loj ntawm txhua micromirror yog kwv yees li txoj kab uas hla ntawm tib neeg cov plaub hau.Cov cuab yeej no tsuas yog siv nyob rau hauv portable coj mus muag projectors thiab tsev ua yeeb yam projectors.
teb emission
Lub hauv paus ntsiab lus ntawm lub emission tso saib yog tib yam li ntawm ib tug cathode ray raj, uas yog, electrons yog attracted los ntawm lub phaj thiab ua rau sib tsoo nrog ib tug phosphor coated ntawm lub anode kom emit lub teeb.Nws cathode yog tsim los ntawm ib tug loj tus naj npawb ntawm me me electron qhov chaw teem nyob rau hauv ib tug array, uas yog, nyob rau hauv daim ntawv ntawm ib tug array ntawm ib pixel thiab ib cathode.Ib yam li cov plasma cov lus qhia, cov khoom siv hluav taws xob tso tawm yuav tsum muaj hluav taws xob siab ua haujlwm, xws li 200V txog 6000V.Tab sis txog tam sim no, nws tsis tau dhau los ua lub ntsiab vaj huam sib luag vaj huam sib luag vim yog tus nqi tsim khoom siab ntawm nws cov khoom tsim khoom.
organic teeb
Nyob rau hauv ib qho organic teeb-emitting diode zaub (OLED), hluav taws xob tam sim no tau dhau los ntawm ib los yog ntau txheej ntawm cov yas los tsim lub teeb uas zoo li inorganic teeb-emitting diodes.Qhov no txhais tau hais tias dab tsi yuav tsum tau rau ib qho khoom siv OLED yog ib qho khoom siv-state zaj duab xis pawg ntawm lub substrate.Txawm li cas los xij, cov ntaub ntawv organic yog qhov nkag siab zoo rau dej vapor thiab oxygen, yog li kev sib khi yog qhov tseem ceeb.OLEDs yog cov khoom siv teeb pom kev zoo thiab nthuav tawm lub teeb pom kev zoo thiab cov yam ntxwv siv hluav taws xob tsawg.Lawv muaj peev xwm ua tau zoo rau kev tsim khoom loj hauv cov txheej txheem yob-los-yob ntawm cov substrates hloov tau thiab yog li pheej yig heev rau kev tsim khoom.Cov thev naus laus zis muaj ntau yam kev siv, los ntawm qhov yooj yim monochromatic loj-chaw teeb pom kev zoo rau tag nrho cov xim video duab qhia.
Electronic ink
E-ink displays yog cov lus qhia uas tswj tau los ntawm kev siv hluav taws xob rau cov khoom siv bistable.Nws muaj ntau tus micro-sealed pob tshab spheres, txhua txog 100 microns nyob rau hauv txoj kab uas hla, muaj ib tug dub kua dyed cov ntaub ntawv thiab ntau txhiab particles ntawm dawb titanium dioxide.Thaum lub tshuab hluav taws xob siv rau cov khoom siv bistable, cov khoom titanium dioxide yuav tsiv mus rau ib qho ntawm cov electrodes nyob ntawm lawv lub xeev.Qhov no ua rau lub pixel emit lub teeb los yog tsis.Vim tias cov khoom yog bistable, nws khaws cov ntaub ntawv rau lub hlis.Txij li thaum nws lub xeev ua hauj lwm yog tswj los ntawm ib tug hluav taws xob teb, nws cov ntsiab lus tso saib yuav hloov nrog tsawg zog.
nplaim taws teeb detector
Flame Photometric Detector FPD (Nplaim Photometric Detector, FPD luv luv)
1. Lub hauv paus ntsiab lus ntawm FPD
Lub hauv paus ntsiab lus ntawm FPD yog ua raws li kev sib xyaw ntawm cov qauv hauv cov nplaim hluav taws xob hydrogen, yog li cov tebchaw uas muaj cov sulfur thiab phosphorus raug txo los ntawm hydrogen tom qab combustion, thiab cov xeev zoo siab ntawm S2 * (lub xeev zoo siab ntawm S2) thiab HPO * (lub xeev zoo siab ntawm HPO) raug tsim tawm.Ob qhov zoo siab tshaj plaws radiate spectra nyob ib ncig ntawm 400nm thiab 550nm thaum lawv rov qab mus rau hauv av.Qhov kev siv ntawm no spectrum yog ntsuas nrog ib tug photomultiplier raj, thiab lub teeb siv yog proportional rau lub loj txaus tus nqi ntawm cov qauv.FPD yog ib qho khoom siv rhiab heev thiab xaiv, uas yog siv dav hauv kev tshuaj xyuas cov sulfur thiab phosphorus compounds.
2. Tus qauv ntawm FPD
FPD yog ib qho qauv uas ua ke nrog FID thiab photometer.Nws pib ua ib lub nplaim hluav taws FPD.Tom qab xyoo 1978, txhawm rau tsim kom muaj qhov tsis txaus ntawm ib lub nplaim hluav taws FPD, dual-flame FPD tau tsim.Nws muaj ob qhov hluav taws xob-hydrogen sib cais, cov nplaim qis hloov cov qauv molecules rau hauv cov khoom siv hluav taws xob uas muaj cov molecules yooj yim xws li S2 thiab HPO;Cov nplaim hluav taws xob sab saud ua rau lub teeb pom kev zoo siab lub xeev tawg xws li S2 * thiab HPO *, muaj lub qhov rais tsom rau ntawm cov nplaim taws sab saud, thiab qhov kev siv ntawm chemiluminescence raug kuaj pom los ntawm lub raj photomultiplier.Lub qhov rais yog ua los ntawm cov iav tawv, thiab cov nplaim nozzle yog ua los ntawm stainless hlau.
3. Kev ua haujlwm ntawm FPD
FPD yog ib qho kev xaiv rau kev txiav txim siab ntawm sulfur thiab phosphorus compounds.Nws cov nplaim hluav taws yog cov nplaim hluav taws uas muaj hydrogen, thiab cov khoom siv huab cua tsuas yog txaus los cuam tshuam nrog 70% ntawm hydrogen, yog li cov nplaim hluav taws kub tsis tshua muaj los ua kom muaj zog sulfur thiab phosphorus.Compound fragments.Tus nqi ntws ntawm cov cab kuj roj, hydrogen thiab huab cua muaj kev cuam tshuam zoo rau FPD, yog li kev tswj cov pa roj yuav tsum ruaj khov heev.Cov nplaim hluav taws kub rau kev txiav txim siab ntawm cov sulfur-muaj cov tebchaw yuav tsum nyob ib ncig ntawm 390 ° C, uas tuaj yeem ua rau muaj kev zoo siab S2 *;Rau kev txiav txim siab ntawm phosphorus-muaj cov tebchaw, qhov piv ntawm hydrogen thiab oxygen yuav tsum nyob nruab nrab ntawm 2 thiab 5, thiab qhov piv ntawm hydrogen-rau-oxygen yuav tsum tau hloov raws li cov qauv sib txawv.Cov pa roj carbon monoxide thiab cov roj pleev yuav tsum tau kho kom zoo kom tau txais cov teeb liab zoo-rau-suab nrov piv.
Post lub sij hawm: Jan-18-2022