Phapang e kholo ka ho fetisisa lipakeng tsa kristale ea metsi le plasma ke hore kristale ea metsi e tlameha ho itšetleha ka mohloli o khanyang, ha TV ea plasma e le ea lisebelisoa tse bonts'ang tsa luminescence. Hajoale, theknoloji ea mantlha ea kristale ea mokelikeli 'marakeng e kenyelletsa LED(light-emitting diode) le CCFL(cold cathode fluorescent lamp).LCD LCD ke..Liquid Crystal Display e khuts'oane bakeng sa Liquid Crystal Display.Sebopeho sa LCD ke Liquid Crystal e behiloeng lipakeng tsa likhalase tse peli tse bapileng.Ho na le lithapo tse ngata tse nyane tse emeng le tse tšekaletseng lipakeng tsa likarolo tse peli tsa khalase.
Mokelikeli oa kristale ka boeona ha o hlahise leseli, o ka hlahisa liphetoho tsa mebala feela, o hloka leseli la morao-rao ho bona likahare tsa pontšo.Phapang pakeng tsa li-skrini tsa setso tsa laptop, tse sebelisang li-cold cathode fluorescent tubes (CCFL) e le backlight, le LED backlit screens, tse sebelisang light-emitting diode (leds), ke hore.White LED is point light source, CCFL tube is strip light source.Makhotla a makhooa a masoeu a tsamaisoa ke matla a tobileng (dc), a ka sebelisoang ka mokhoa o ts'oanang, empa haeba u ho na le li-watts tse fetang tse seng kae, u lokela ho nahana ka potoloho e loketseng ea koloi ho ntlafatsa katleho.Tube ea CCFL e tlameha ho ba le tšebeliso e ts'oanang ea "khatello e phahameng ea khatello". Feela ho na le mefuta e mengata ea LCD backlight way, ho akarelletsa le LED (Light Emitting Diode) le CCFL (Cold Cathode Fluorescent Lamp) kapa e bitsoa CCFT (Cold Cathode Fluorescent Tube).
CCFL (cold cathode fluorescent lamp) backlight ke sehlahisoa se ka sehloohong sa backlight sa LCD TV. E sebetsa ha motlakase o phahameng lipheletsong tse peli tsa tube, tube ka har'a tšusumetso e matla ea elektroniki ka mor'a hore elektrode e hlahise tlhahiso ea elektronike ea bobeli, e qala ho tsoa. The tube ea mercury kapa inert gas elektronike ka mor'a tšusumetso, excitation radiation 253.7 nm ultraviolet excitation, ultraviolet excitation of tu the phosphors leboteng la tube le ho hlahisa leseli le bonahalang.CCFL bophelo ba lebone ka kakaretso e hlalosoa e le: ho 25 ℃ ambient mocheso, rated lebone la koloi la hona joale, khanya e fokotsehile ho 50% ea khanya ea pele ea bolelele ba nako bakeng sa bophelo ba lebone.Hona joale, bophelo bo ikemetseng ba LCD TV backlight bo ka fihla lihora tsa 60,000. Leseli la morao la CCFL le khetholloa ka theko e tlaase, empa ts'ebetso ea mebala. ha e ntle joalo ka khanya ea LED.
Leseli la LED le SEBELISA LED e le mohloli oa khanya ea morao, e leng theknoloji e tšepisang ka ho fetisisa ea ho nkela sebaka sa setso se batang sa cathode fluorescent tube nakong e tlang. ho theha masoba a qosoang hantle ao lielektrone le masoba li kopanang ka ona ha motlakase o feta, o lokolla matla a feteletseng ka mokhoa oa mahlaseli a khanyang.Li-leds tse nang le litšobotsi tse fapaneng tsa luminescence li ka fumanoa ka ho sebelisa lisebelisoa tse fapaneng tsa semiconductor.Li-leds tse seng li ntse li sebelisoa khoebong li ka fana ka tse khubelu, tse tala, tse putsoa. , botala, lamunu, 'mala o mosoeu le o mosoeu.Mohala oa selefouno haholo-holo o SEBELISA lebone la LED le lesoeu, ha lebone la LED le sebelisoang ho LCD TV le ka ba tšoeu, le khubelu, le letala le leputsoa.Ka lihlahisoa tse phahameng, mebala e mengata ea li-backlight tsa LED e ka boela ea sebelisoa ho tsoela pele ho ntlafatsa ponahalo ea 'mala, joalo ka mebala e tšeletseng ea mantlha ea LED backlight.Molemo oa khanya ea LED ke hore botenya bo bobebe, hoo e ka bang 5 cm, le gamut ea mebala. e pharaletse haholo, e ka fihlelang 105% ea NTSC color gamut.Phallo e khanyang ea batsho e ka fokotsoa ho 0.05 lumens, e leng se etsang hore phapang e fapaneng ea LCD TV e be holimo ho 10,000: 1. Ka nako e ts'oanang, mohloli oa leseli la LED o na le lihora tse ling tsa 100,000 tsa bophelo. Hona joale, bothata bo boholo bo thibelang nts'etsopele ea khanya ea LED ke litšenyehelo, hobane theko e phahame haholo ho feta mohloli o khanyang oa lebone le batang la fluorescent, mohloli oa backlight oa LED o ka hlaha feela ho LCD TVS e phahameng ka ntle ho naha.
Melemo ea mohloli oa khanya ea LED
1. Skrine e ka etsoa hore e be tšesaane.Haeba re sheba li-LCDS tse ling, re ka bona hore ho na le li-tubes tse 'maloa tsa CCFL tse hlophisitsoeng.Ka lehlakoreng le leng, ho khantša ka morao ke thepa e khanyang e khanyang, e sa hlokeng lisebelisoa tse eketsehileng.
2. Phello e ntle ea setšoantšo sa CCFL skrineng sa backlit hangata se na le khanya e fapaneng bohareng le ho potoloha, 'me bosoeu bo bong ha skrini se le letšo ka ho felletseng.
Mabone a fluorescent a CCFL, joalo ka mabone a fluorescent, a tsofala ha nako e ntse e ea, kahoo li-skrini tsa setso tsa laptop li tla fetoha mosehla 'me li be lefifi ka mor'a lilemo tse peli kapa tse tharo, ha li-backlight tsa LED li tla tšoarella nako e telele, bonyane makhetlo a mabeli kapa a mararo.
Kaofela ha rōna rea tseba hore mabone a fluorescent a hloka matla a phahameng a motlakase ho bombade mercury vapor, kahoo tšebeliso ea matla ea skrine ea CCFL e kholo, ka kakaretso matla a lisenthimithara tse 14 ka li-watts tse fetang 20. Li-leds ke li-semiconductors tse sebetsang ka matla a tlaase, li bonolo ka sebopeho, 'me e sebelisa matla a fokolang, e leng se etsang hore e be molemo haholo bakeng sa bophelo ba betri ea laptop.
5. Ho baballa tikoloho haholoanyane mercury maboneng a CCFL e tla baka tšilafalo e kholo tikolohong, 'me ho tla ba thata haholo ho e sebelisa hape ntle le kotsi.
Molao-motheo o sebetsang oa lebone la CCFL le batang la cathode fluorescent
Sebopeho sa 'mele oa lebone la fluorescent la CCFL ke hore khase ea inert Ne+Ar e nang le trace mercury vapor (mg) e tiisitsoe ka har'a tube ea khalase 'me ntho ea fluorescent e koahetsoe leboteng le ka hare la khalase.CCFL cold cathode fluorescent tubes hlahisa leseli ka ho otla phofo ea fluorescent leboteng ka khanya ea ultraviolet e hlasimolohileng ke mercury ea gaseous ka li-electrode lipheletsong tse peli tsa tube.The wavelength e khethoa ke thepa ea thepa ea fluorescent.
Bothata ba lebone la CCFL le batang la cathode fluorescent
The CCFL light source that liquid crystal TV E SEBELISA ka tloaelo hona joale, ho sa tsotellehe hore na ho shebahala joang ho tloha ho fana ka leseli kapa ho tloha sebopeho sa 'mele, sheba ka tube ea motšehare eo re e sebelisang letsatsi le leng le le leng haufi haholo.Mofuta ona oa mohloli oa leseli o na le melemo ea sebopeho se bonolo, mocheso o tlase o phahama holim'a tube, khanya e phahameng holim'a tube le ho sebetsa habonolo ka libopeho tse sa tšoaneng. Empa bophelo ba tšebeletso bo khutšoanyane, bo na le mercury, gambit ea mebala e moqotetsane, feela e ka finyella NTSC 70% ~ 80%. Bakeng sa li-skrini tse kholo tsa TV, motlakase oa CCFL le ts'ebetso ea liphaephe tse atolositsoeng ho thata.
Ntlha ea pele, hlooho e bohloko ka ho fetisisa ke nako e khutšoanyane ea bophelo.CCFL bophelo ba tšebeletso ea backlight ka kakaretso ke lihora tsa 15,000 ho lihora tsa 25,000, nako e telele ea tšebeliso ea LCD (haholo-holo LCD ea laptop), ho hlakile haholoanyane ho fokotseha ha khanya, ha ho sebelisoa lilemo tse 2-3. , skrine ea LCD e tla ba lefifi, e mosehla, ena ke bophelo bo bokhutšoane ba bofokoli ba CCFL bo bakoang ke.
Ea bobeli, e fokotsa papali ea mebala ea LCD. Pixel e 'ngoe le e' ngoe ho LCD e entsoe ka li-block tsa R, G le B tse nang le mahlakore a mabeli, 'me ts'ebetso ea mebala ea LCD e itšetlehile ka ho feletseng ka ts'ebetso ea mochine oa backlight le filimi ea filimi ea mebala. mebala ea filimi ea filthara e tšoana le leseli le lesoeu le hlahisoang ke CCFL (sebopeho sa mebala e meraro ea mantlha), empa CCFL backlight module e ke ke ea khona ho fihlela litlhoko tsa moralo, ke 70% feela ea maemo a NTSC.
Ntlha ea boraro, mohaho ona o rarahane 'me khanya e hlahisoang ke khanya e fokola.Hobane lebone le batang la cathode fluorescent ha se mohloli oa leseli la sefofane, kahoo e le ho finyella khanya e ts'oanang ea khanya ea backlight, LCD ea backlight module e hloka ho ba le lisebelisoa tse ngata tse thusang. joalo ka poleiti ea diffuser, poleiti ea tataiso e bobebe le poleiti e bonts'ang.
Ea bone, molumo o moholo, matla a sebelisoang ke matla ha a tšoanelehe.Bophahamo ba LCD bo ke ke ba fokotseha ho feta hobane CCFL backlight e tlameha ho ba le li-diffuser plate, reflector plate le lisebelisoa tse ling tse rarahaneng tsa optical. ha e khotsofatse, kaha li-LCD tsa 14-inch li hloka matla a 20W kapa ho feta.
Ha e le hantle, lilemong tse peli tse fetileng bahlahisi ba malapeng le ba tsoang linaheng tse ling ka lebaka la mefokolo ea CCFL ea setso ba entse lintlafatso tse itseng, ho bonahala eka ba fihlile boemong bo phahameng haholo, ho boleloa hore bahlahisi ba phatlalatsa boselamose, empa lintlafatso tsena li fokotsehile, 'me li ke ke tsa felisa ka ho feletseng. CCFL backlight congenital tekheniki liphoso.
Hona joale, backlight ke haholo-holo CCFL tube, litšenyehelo li ka 'na tsa e-ba tlase hanyenyane, theknoloji e ntse e hōla haholoanyane.Ho khanya ha LED ho boetse ho lekanyelitsoe ho lihlahisoa tse nyenyane tsa skrine tse kang selefouno, MP3, MP4, joalo-joalo Bakeng sa lihlahisoa tse kholo tsa skrine, ho joalo. e ntse e le tataiso ea boiteko.Leha ho le joalo, e boloka matla haholoanyane, e leng molemo oa eona
Nako ea poso: Jun-29-2019