Musiyano mukuru pakati pekristaro yemvura uye plasma ndewekuti kristaro yemvura inofanirwa kuvimba neyakajeka sosi, nepo plasma TV iri yeanoshanda luminescence kuratidza michina.Parizvino, iyo huru yemvura yekristaro backlighting tekinoroji pamusika inosanganisira LED (light-emitting diode) uye CCFL(inotonhora cathode fluorescent lamp).LCD LCD is..Liquid Crystal Display ipfupi inoreva Liquid Crystal Display.Chimiro cheLCD iLiquid Crystal yakaiswa pakati pezvimedu zviviri zvakafanana zvegirazi.Pane waya zhinji dzakati kwakamira uye dzakachinjika pakati pezvidimbu zviviri zvegirazi.
Liquid crystal pachayo haibudisi chiedza, inogona kungobudisa kuchinja kwemavara, inoda backlight kuti ione zviri mukati mekuratidzira.Musiyano pakati pechinyakare laptop skrini, iyo inoshandisa inotonhora cathode fluorescent tubes (CCFL) se backlight, uye LED backlit skrini, iyo inoshandisa light-emitting diodes (leds), ndiyo.White LED inzvimbo yechiedza, CCFL tube is strip light source.Madiki machena machena anofambiswa nemagetsi akananga (dc), anogona kushandiswa tandem, asi kana iwe Iva neanopfuura mawatts mashoma, iwe unofanirwa kufunga nezve yakakodzera dhiraivha dunhu kuti uvandudze kunyatsoshanda.CCFL chubhu inofanirwa kunge iine "high pressure plate" inoenderana kushandiswa.Kungove nemhando dzakasiyana dzeLCD backlight way, kusanganisira iyo LED (Chiedza Emitting Diode) ine CCFL (Cold Cathode Fluorescent Lamp) kana kuti inonzi CCFT (Cold Cathode Fluorescent Tube).
CCFL (inotonhora cathode fluorescent rambi) backlight ndicho chikuru backlight chigadzirwa cheLCD TV.Inoshanda kana yakakwira voltage pamativi ese echubhu, chubhu mukati meashoma emagetsi akakwira-kumhanya mushure mekunge electrode yaburitsa yechipiri maelectron emission, yatanga kubuda, chubhu yemercury kana inert gasi remagetsi mushure mekuita, iyo excitation mwaranzi 253.7 nm ultraviolet mwenje, ultraviolet excitation ye tu the phosphors pamadziro echubhu uye inoburitsa chiedza chinooneka.CCFL rambi hupenyu hunowanzotsanangurwa se: pa 25 ℃ ambient tembiricha, yakayerwa ikozvino motokari mwenje, kupenya kunoderedzwa kusvika ku50% yekutanga kupenya kwehurefu hwenguva yehupenyu hwemwenje.Parizvino, hupenyu hwezita reLCD TV backlight hunogona kusvika maawa 60,000.CCFL backlight inoratidzwa nemutengo wakaderera, asi kushanda kwemavara. haina kunaka senge LED backlight.
LED backlight INOSHANDISA LED sebacklight sosi, inova tekinoroji inovimbisa kutsiva yechinyakare inotonhora cathode fluorescent chubhu mune ramangwana.Ma LED anogadzirwa nematehwe matete e doped semiconductor zvinhu, imwe ine yakawandisa maerekitironi, uye imwe isina iwo, kugadzira maburi anochajiswa zvakanaka ayo maerekitironi nemakomba anobatanidza sezvo magetsi achipfuura, achiburitsa simba rakawandisa nenzira yemwaranzi yechiedza.Leds ine siyana luminescence maitiro inogona kuwanikwa kuburikidza nekushandisa zvakasiyana semiconductor zvinhu.Leds yatove mukushandiswa kwekutengeserana inogona kupa tsvuku, girini, bhuruu , girini, orenji, amber uye machena.Nharembozha inonyanya KUSHANDISA chena LED backlight, nepo LED backlight inoshandiswa muLCD TV inogona kuva yakachena, tsvuku, girini uye bhuruu.Muzvigadzirwa zvepamusoro-soro, multi-color LED backlight inogona kuiswawo kuti iwedzere kuvandudza kutaura kwemavara, senge matanhatu ekutanga mavara e LED backlight.Kubatsira kwe LED backlighting ndeyekuti ukobvu hwakatetepa, hunosvika 5 cm, uye ruvara rwe gamut. yakakura kwazvo, inogona kusvika 105% yeNTSC color gamut.Iyo inopenya inopenya yemutema inogona kuderedzwa kusvika ku0.05 lumens, iyo inoita kuti mutsara wekusiyana weLCD TV usvike 10,000: 1. Panguva imwecheteyo, LED backlight source ine mamwe maawa 100,000 ehupenyu.Parizvino, dambudziko guru rinodzivisa. kuvandudzwa kwe LED backlight ndiyo mari, nokuti mutengo wakakwirira zvikuru kupfuura chiedza chechiedza chemwenje wefluorescent, LED backlight source inogona kungoonekwa mu-high-end LCD TVS kunze kwenyika.
Zvakanakira zve LED backlight sosi
1. Chidzitiro chinogona kuitwa chitete.Kana tikatarisa mamwe maLCDS, tinogona kuona kuti kune akati wandei filament CCFL machubhu akarongwa.Backlighting, kune rumwe rutivi, i flatlight-emitting material, haidi mamwe madivayiri.
2. Zvirinani mufananidzo mhedzisiro CCFL backlit skrini kazhinji ine kupenya kwakasiyana pakati nepakati, uye imwe chena kana sikirini yakasviba zvachose.
Mwenje weCCFL fluorescent, semwenje wefluorescent, zera nekufamba kwenguva, saka zvechinyakare zviratidziro zvemalaptop zvinoshanduka kutsvuka uye kusviba mushure memakore maviri kana matatu, nepo LED backlit skrini inogara kwenguva refu, kanenge kaviri kana katatu kureba.
Isu tose tinoziva kuti marambi efluorescent anoda high voltage kuti bombade mercury vapor, saka kushandiswa kwesimba kweCCFL screen yakakura, kazhinji masendimita gumi nemana ekushandiswa kwesimba mune anopfuura watts 20. Leds ma semiconductors anoshanda pa low voltage, ari nyore mukugadzirisa, uye kushandisa simba shoma, zvichiita kuti zvive zvakanyanya kunaka kune hupenyu hwebhatiri relaptop.
5. Kunyanya kushamwaridzana nemhoteredzo yemekiyuri muCCFL magetsi ichakonzera kusvibiswa kukuru kune zvakatipoteredza, uye zvichange zvakaoma zvikuru kudzokorodza zvisina ngozi.
Kushanda musimboti weCCFL inotonhora cathode fluorescent rambi
Chimiro chemuviri cheCCFL inotonhora cathode fluorescent rambi ndeyekuti inert gasi Ne+Ar musanganiswa une trace mercury vapor (mg) yakavharirwa muchubhu yegirazi uye chinhu chefluorescent chakaputirwa mukati memadziro egirazi.CCFL inotonhora cathode fluorescent chubhu budisa chiedza nekurova fluorescent powder pamadziro ne ultraviolet chiedza chinofadza ne gaseous mercury kuburikidza ne electrode kumativi ose echubhu.Kureba kwewavelength kunotarirwa nehupfumi hwezvinhu zvefluorescent.
Kukanganisa kweCCFL inotonhora cathode fluorescent rambi
Iyo CCFL light source iyo liquid crystal TV INOSHANDISA kazhinji panguva ino, zvisinei kuti inotarisa kubva pakupa mwenje musimboti kana kubva kune chimiro chemuviri, tarisa nechiedza chemasikati chubhu yatinoshandisa mazuva ese padhuze. tembiricha yakaderera inokwira pamusoro pechubhu, kupenya kwakanyanya pamusoro pechubhu uye nyore kugadzirisa mune akasiyana maumbirwo.Asi hupenyu hwesevhisi hupfupi, hune mercury, iyo gambit yeruvara yakamanikana, chete inogona kuwana iyo NTSC 70% ~ 80%.Nekuda kukuru - saizi yeTV skrini, CCFL voltage uye yakawedzera pombi kugadzirisa kwakaoma.
Chekutanga, musoro mukuru ndewenguva pfupi yehupenyu.CCFL backlight service life inowanzo 15,000 maawa kusvika 25,000 maawa, iyo yakareba kushandiswa kweLCD (kunyanya laptop LCD), kunowedzera kujeka kuderera, mukushandiswa kwemakore 2-3. , LCD skrini ichave yakasviba, yero, iyi ndiyo hupenyu hupfupi hweCCFL kukanganisa kunokonzerwa.
Chechipiri, inogumira LCD color play.Pixel imwe neimwe muLCD inoumbwa neR, G uye B rectangular color blocks, uye kushanda kwemavara eLCD zvachose kunoenderana nekushanda kwe backlight module uye color filter film.The three primary mavara efirimu remafirimu akafanana nechiedza chichena chakaburitswa neCCFL (kuumbwa kwemavara matatu ekutanga), asi CCFL backlight module haigone kuzadzisa zvinodiwa nedhizaini, ingangoita 70% yeiyo NTSC standard.
Chechitatu, chimiro chacho chakaoma uye kupenya kunobuda kufanana kwakashata.Nekuti mwenje unotonhora we cathode fluorescent hausi mwenje wendege, saka kuti uwane yunifomu inopenya kubuda kwebacklight, iyo backlight module yeLCD inoda kuve yakashongedzerwa nemidziyo yakawanda yekubatsira. senge diffuser plate, light guide plate uye reflector plate.
Chechina, vhoriyamu yakakura, simba rekushandisa harina kunaka.Kuwanda kweLCD hakugoni kuwedzera kuderedzwa nokuti CCFL backlight inofanira kunge ine diffuser plate, reflector plate uye zvimwe zvakaoma optical devices.Panyaya yekushandiswa kwesimba, maLCDs anoshandisa CCFL se backlight anewo zvakare. isingagutsi, sezvo 14-inch maLCDs anoda 20W kana kupfuura simba.
Ehe, makore maviri apfuura vagadziri vepamba uye vekunze vachiona zvikanganiso zvechinyakare CCFL vakaita zvimwe zvigadziriso, zvinoita kunge zvasvika padanho repamusoro, vagadziri vekushambadzira vanonzi mashiripiti, asi kuvandudzwa uku kudiki, uye hakugone kubvisa zvachose. iyo CCFL backlight congenital technical defects.
Parizvino, backlight inonyanya CCFL chubhu, mutengo unogona kunge wakadzikira zvishoma, iyo tekinoroji yakawedzera kukura.LED backlighting inongogumira kune zvidiki zvigadzirwa sefoni, MP3, MP4, nezvimwe. Kune yakakura skrini zvigadzirwa, ndizvo. ichiri gwara rekuedza.Zvisinei, inonyanya kuchengetedza simba, iyo ndiyo inobatsira
Nguva yekutumira: Jun-29-2019