Indlela ubuchwepheshe obukhanyiswe ngomphetho obusebenza ngayo kumathelevishini e-LED
Ubuchwepheshe bethelevishini buyaqhubeka nokuguquka ngokuhamba kwesikhathi. Nakuba amathelevishini e-tube ayeyindinganiso, izibonisi zephaneli ezisicaba njenge-LED TV manje sezibusa imakethe ngenxa yemiklamo yazo emincane, ekhanyayo, neyonga amandla. Kodwa-ke, akuwona wonke ama-TV e-LED adalwe ngokulinganayo. Enye yezindlela zokukhanyisa ezivame kakhulu ezisetshenziswa kuma-TV e-LED ukukhanya okusemaphethelweni. Abantu abaningi babona leli gama ezincwajana noma ezincazelweni zomkhiqizo, kodwa abaqondi njalo ukuthi lisebenza kanjani nokuthi lithinta kanjani ikhwalithi yesithombe. Lesi sihloko sizohlola ngokujulile ukuthi ubuchwepheshe obukhanya emaphethelweni busebenza kanjani kumathelevishini e-LED, kufaka phakathi izinzuzo zabo, ukubi, nokuthi kufanele nini.
Ukuqonda imiqondo eyisisekelo ye-LED TV
Okokuqala, kubalulekile ukucacisa amagama. Abantu abaningi babhekisela ku-"LED TV" njengokungathi i-LED iwuhlobo lwephaneli yokubonisa. Kodwa-ke, ama-LED TV ngokuvamile angama-LCD TV asebenzisa ama-LED njengomthombo wokukhanya kwangemuva. Amaphaneli e-LCD ngokwawo awakhiphi ukukhanya; alawula nje ukuthi kungakanani ukukhanya okudlulayo ukuze kwakheke isithombe. Ngakho-ke, ikhwalithi yokukhanya kwangemuva ithinta kakhulu ukukhanya, ukugqama, kanye nokufana kwesibonisi.
Kunezindlela eziningana zokubeka izibani zangemuva ze-LED. Ezimbili ezaziwa kakhulu yilezi:
1. Kukhanyiswe ngomphetho (izibani zisemaphethelweni esikrini)
2. Ikhanyiswe ngqo / I-Full-array (izibani zisatshalaliswa ngemuva kwephaneli)
Lesi sihloko sigxile kweyokuqala: ukukhanya okusemaphethelweni.
Buyini ubuchwepheshe obukhanyiswe ngomphetho?
I-Edge-lit iyindlela yokukhanyisa lapho ama-LED ebekwa khona emaphethelweni ephaneli kamabonakude—kungaba ngakwesokunxele nangakwesokudla, phezulu nangaphansi, noma asakazeke ezinhlangothini eziningi. Ukukhanya okuvela kula ma-LED kube sekudluliselwa kuyo yonke indawo yesikrini ngamadivayisi akhethekile optical, ikakhulukazi ipuleti lokuqondisa ukukhanya (LGP).
Umgomo wokukhanya okusemaphethelweni ukudala isikrini esincane ngoba izibani azidingi ukumboza lonke iphaneli yangemuva. Ngamanye amazwi, ukukhanya okusemaphethelweni kuthuthukisa ukubekwa kwe-LED ukuze kudalwe umklamo kamabonakude omncane nolula.
Izingxenye eziyinhloko zesistimu ekhanyiswe ngomphetho
Ukuze sikusize uqonde ukuthi isebenza kanjani, nazi izingxenye ezibalulekile zethelevishini ye-LED ekhanyiswe ngomphetho:
1. I-LED emaphethelweni ephaneli
Ama-LED asebenza njengomthombo wokukhanya oyinhloko. Lawa ma-LED ngokuvamile amhlophe (ama-LED amhlophe) noma inhlanganisela yama-LED aluhlaza okwesibhakabhaka nama-phosphor akhiqiza ukukhanya okumhlophe.
2. Ipuleti Lokuqondisa Ukukhanya (LGP)
I-LGP iyishidi elibonakalayo elisebenza "ukusabalalisa" ukukhanya okuvela emaphethelweni esikrini ngokulinganayo kuso sonke isikrini. Ngaphakathi kwe-LGP kukhona ama-microdot (noma ama-microprism) aqondisa ukukhanya phambili.
3. Ishidi lokuhlukanisa
Ngemva kokuba ukukhanya kuhlakazekile kusuka ku-LGP, i-diffuser isiza ukushelela ukusabalala kwayo ukuze kungabikho amabala noma imigqa ekhanyayo ebonakalayo.
4. Ifilimu yokuthuthukisa ukukhanya kwe-Prism / ukukhanya
Lolu ngqimba lusiza ukuqondisa ukukhanya kumbukeli, okwandisa ukusebenza kahle nokukhanya ngaphandle kokwandisa amandla e-LED.
5. Iphaneli ye-LCD (ungqimba lwephikseli)
Amaphaneli e-LCD alawula ukukhanya okudlula kuwo esebenzisa amakristalu e-liquid. Iphikseli ngayinye inama-subpixel abomvu, aluhlaza okotshani, naluhlaza okwesibhakabhaka alawulwa ukukhiqiza umbala nezithombe.
6. I-Polarizer kanye nezihlungi zombala
I-polarizer ihlunga indlela yokukhanya ukuze i-LCD ikwazi ukuyilawula ngokunembile. Isihlungi sombala sinquma umbala wokugcina oboniswayo.
Indlela ubuchwepheshe obukhanyiswe ngomphetho obusebenza ngayo isinyathelo ngesinyathelo
Nansi inqubo elula kodwa enembile yokuthi ukukhanya okusemaphethelweni kukhiqiza kanjani izithombe:
1. Ama-LED akhipha ukukhanya okuvela emaphethelweni esikrini.
Uma i-TV ivuliwe, uchungechunge lwama-LED onqenqemeni lwephaneli luyakhanya futhi lukhiqize ukukhanya okunamandla.
2. Ukukhanya kungena ku-LGP futhi kuqondiswa kuyo yonke indawo yesikrini
Ngenxa yokuthi ama-LED asezinqeni, ukukhanya kudingeka "kusatshalaliswe" maphakathi nesikrini. Yilapho i-LGP ingena khona. Amaphethini amancane ku-LGP abonakalisa futhi agobe ukukhanya ukuze kusabalale ngokulinganayo kusuka kolunye uhlangothi kuya kolunye.
3. I-Diffuser ilinganisa ukukhanya
Ngemva kokudlula ku-LGP, ukukhanya kungaba namabala akhanyayo. I-diffuser ilinganisa ubukhulu ukuze ibonakale ifana kakhulu.
4. Ifilimu ye-Prism ikhulisa isiqondiso somsebe
Ifilimu ye-prism iqondisa ukukhanya phambili, okuholela ekukhanyeni okubonakalayo okuphezulu kusuka ekhoneni elijwayelekile lokubuka. Lokhu kwandisa ukusebenza kahle futhi kunciphisa isidingo sama-LED engeziwe.
5. Iphaneli ye-LCD “ibumba” isithombe
Ukukhanya okumhlophe okuyisicaba bese kudlula kuphaneli ye-LCD. Amakristalu oketshezi ku-pixel ngayinye asebenza "njengama-taps," avula noma avale ukugeleza kokukhanya ngokwesignali yesithombe. Uma kuhlanganiswa nezihlungi zombala (RGB), lokhu kukhanya kuguqulwa kube isithombe sombala.
6. Isithombe sifinyelela emehlweni ombukeli
Umphumela wokugcina uba isithombe esibukeka sikhanya futhi sibukhali, i-TV incane kakhulu ngoba ama-LED awabonakali ngemuva.
Ukufiphaza kwendawo ekukhanyeni okusemaphethelweni: kwenziwa kanjani?
Amanye ama-TV anamuhla akhanya ngomphetho anikeza ukukhanya kwendawo, kodwa ukusetshenziswa kuhlukile kuma-TV agcwele. Ngama-TV akhanya ngomphetho, ukukhanya kwendawo kuvame ukubizwa ngokuthi ukukhanya kwendawo okumphetho noma ukukhanya kwendawo okungama-pseudo. Isimiso siwukuthi: ama-LED asemaphethelweni ahlukaniswe ngama-zones. I-TV ingafiphaza noma ikhanyise izindawo ezithile kuye ngokuqukethwe.
Kodwa-ke, ngenxa yokuthi umthombo wokukhanya usavela emaphethelweni, ukulawula akunembile njengase-full-array. Uma ingxenye encane yesikrini idinga ukuba mnyama ngokuphelele kuyilapho indawo eseduze ikhanya, ukukhanya okuvela emaphethelweni kuvame "ukuvuza" nokusabalala. Yingakho izibonisi ezikhanyiswe emaphethelweni zivame ukuzwa:
– Ukuqhakaza (i-halo yokukhanya ezungeze izinto ezikhanyayo ngemuva okumnyama)
– Ukukhanya okukhanyayo (ukukhanya kuyavuza emakhoneni noma ezinhlangothini zesikrini)
Izinzuzo zethelevishini ekhanyiswe kahle
Lobu buchwepheshe buthandwa ngesizathu esithile. Nazi ezinye zezinzuzo zabo:
1. Umklamo omncane futhi wesimanje
Ngenxa yokuthi ama-LED awabekwa ngemuva kwesikrini, i-TV ingenziwa ibe mncane kakhulu.
2. Isisindo esilula
Isakhiwo sesibani sangemuva silula futhi ngokuvamile senza i-TV ibe lula.
3. Ukusetshenziswa kwamandla okusebenza kahle
Inani lama-LED asetshenziswayo livame ukuba ngaphansi kwe-full-array, ngakho-ke amandla angasebenza kahle kakhulu.
4. Amanani angabizi kakhulu
Abakhiqizi abaningi bakhetha ukukhanya okuseceleni ngoba izindleko zokukhiqiza ziphansi, okuholela entengo yokuthengisa encintisanayo kakhudlwana.
Izinkinga zamathelevishini akhanyiswe ngomphetho
Ngakolunye uhlangothi, kunezindlela eziningana zokuvumelana:
1. Ukufana okulula kungase kungabi okuphelele.
Esikrinini esimnyama, ungase uqaphele izindawo ezithile zikhanya kakhulu, ikakhulukazi emakhoneni (ukukhanya kwekhoneni) noma emaceleni.
2. Ukungafani kwe-HDR kanye nokusebenza ngokuvamile kunqunyelwe kakhulu
I-HDR idinga ukulawulwa kokukhanya okunembile kakhulu. Ukukhanya okukhanyayo okungenamphetho kuyahluleka ukukhiqiza ubumnyama obumnyama kanye nokugqama okukhanyayo kakhulu ngaphandle kokuqhakaza.
3. Ukufiphaza kwendawo akunembile kangako
Ngenxa yokuthi indawo yokufiphaza ilinganiselwe futhi itholakala onqenqemeni, ukulawula akukuhle njenge-full-array.
4. Amathuba okuthi kuvele izikhalazo noma “ukufiphala”
Amanye amayunithi angase abonise amaphethini amafu akhanyayo ngemuva okumnyama ngenxa yokusabalala kokukhanya okungalingani.
I-edge-lit vs full-array: yikuphi okungcono?
Ayikho impendulo eyodwa ngoba konke kuncike ezidingweni:
– Uma ubeka phambili umklamo omncane, ukungabizi, kanye nokusetshenziswa okuvamile njenge-cable TV, i-YouTube, ukusakazwa kwedijithali, noma imidlalo evamile, isibonisi esikhanyiswe emaphethelweni ngokuvamile sanele.
– Uma ufuna ikhwalithi yesithombe engcono kakhulu yama-movie amnyama, i-HDR engathi sína, futhi ufuna ama-black ajulile anezimbali ezincane, i-full-array (ikakhulukazi enezindawo eziningi ezifiphele zendawo) ivame ukuba ngcono.
– Ezingeni eliphezulu kakhulu, ubuchwepheshe be-OLED abudingi ngisho nokukhanya kwangemuva ngoba iphikseli ngayinye ikhanya ngokuzimela, kodwa intengo ivame ukuba phezulu.
Kunini lapho kufanele ukhethe khona ukukhanya okukhanyayo?
Ukukhanya okuseceleni kuyisinqumo esihle uma:
1. Ubukela ekamelweni elikhanyiswe kahle (emini, ekamelweni lokuphumula elikhanyayo).
2. Ukhathalela kakhulu ukuma kwe-TV okubushelelezi nokubukeka kahle.
3. Unesabelomali esincane kodwa usafuna i-TV yesimanje enokukhanya okuhle.
4. Awuzweli kakhulu ezindabeni zokuqhakaza noma zokufana uma ubuka izigcawu ezimnyama.
Isiphetho
Ubuchwepheshe obukhanyiswe ngomphetho kumathelevishini e-LED busebenza ngokubeka ama-LED onqenqemeni lwesikrini, bese kusetshenziswa ipuleti lokuqondisa ukukhanya nezinye izendlalelo ze-optical ukusabalalisa ukukhanya ngokulinganayo kulo lonke iphaneli. Lolu hlelo luvumela amathelevishini ukuba abe mancane, alula, asebenzise kahle amandla, futhi angabizi kakhulu, kodwa njengokushintshana, izibonisi ezikhanyiswe ngomphetho zivame ukubhekana nezinselele ngokufana kokukhanya, ukuqhathanisa, kanye nokusebenza kwe-HDR, ikakhulukazi kokuqukethwe okumnyama.
Ngokuqonda ukuthi i-edge-lit isebenza kanjani, ungahlola ngokuhlakanipha imininingwane ye-TV bese ukhetha umkhiqizo ofanela izidingo zakho, kunokuba nje uthonywe yi-jargon yokumaketha. Uma ungathanda, ngingakusiza futhi ukuthi uqhathanise i-edge-lit vs i-direct-lit/full-array ngokusekelwe kumkhiqizo noma imodeli ye-TV oyibukayo, noma udale umhlahlandlela wokukhetha i-TV ngokusekelwe ezidingweni zakho zokubuka.
