Ukuze kuzuzwe umphumela wokubonisa ongcono kakhulu, izikrini zokubonisa zekhwalithi ephezulu ze-LED ngokuvamile zidinga ukulinganiswa ukuze kukhanye nombala, ukuze ukukhanya nokuvumelana kombala kwesikrini sesibonisi se-LED ngemva kokukhanyisa kungafinyelela kokungcono kakhulu.Pho kungani isikrini sokubonisa se-LED sekhwalithi ephezulu sidinga ukulinganiswa, futhi sidinga ukulinganiswa kanjani?
Ingxenye.1
Okokuqala, kuyadingeka ukuqonda izici eziyisisekelo zombono womuntu wokukhanya.Ukukhanya kwangempela okubonwa iso lomuntu akuhlobene ngokuqondile nokukhanya okukhishwa yi-Isikrini sokubonisa se-LED, kodwa kunalokho ubuhlobo obungaqondile.
Isibonelo, uma iso lomuntu libheka isikrini se-LED esinokukhanya kwangempela okungu-1000nit, sehlisa ukukhanya kube ku-500nit, okuholela ekwehleni kokukhanya kwangempela ngo-50%.Kodwa-ke, ukukhanya okubonakalayo kweso lomuntu akunciphi ngokulandelana ku-50%, kodwa kuphela ku-73%.
Ijika elingelona umugqa phakathi kokukhanya okubonwayo kweso lomuntu nokukhanya kwangempela kwesikrini esibonisiwe se-LED kubizwa ngokuthi ijika le-gamma (njengoba kuboniswe kuMfanekiso 1).Kusuka ejikeni le-gamma, kungabonakala ukuthi umbono wokushintsha kokukhanya ngeso lomuntu uncike kakhulu, futhi ubukhulu bangempela bokushintsha kokukhanya kuzibonisi ze-LED azihambisani.
Ingxenye.2
Okulandelayo, ake sifunde ngezici zokushintsha kombono wombala esweni lomuntu.Umdwebo 2 uyishadi le-CIE chromaticity, lapho imibala ingamelwa khona izixhumanisi zemibala noma ubude begagasi obukhanyayo.Isibonelo, ubude begagasi besikrini esivamile sesibonisi se-LED singama-nanometer angu-620 e-LED ebomvu, ama-nanometer angu-525 e-LED eluhlaza, kanye nama-nanometer angu-470 e-LED eluhlaza okwesibhakabhaka.
Ngokuvamile, endaweni yombala ofanayo, ukubekezelela iso lomuntu umehluko wemibala kungu-Δ Euv=3, okwaziwa nangokuthi umehluko wombala obonakalayo.Uma umehluko wombala phakathi kwama-LED ungaphansi kwaleli nani, kubhekwa ukuthi umehluko awubalulekile.Uma Δ Euv>6, kubonisa ukuthi iso lomuntu libona umehluko omkhulu wombala phakathi kwemibala emibili.
Noma ngokuvamile kunenkolelo yokuthi lapho umehluko we-wavelength ungaphezu kwama-nanometer angu-2-3, iso lomuntu liyakwazi ukuzwa umehluko wombala, kodwa ukuzwela kweso lomuntu emibaleni ehlukene kusahluka, nomehluko wamaza ongawubona iso lomuntu. ngoba imibala ehlukene ayilungisiwe.
Ngokombono wephethini yokuhluka kokukhanya nombala ngeso lomuntu, izikrini zokubonisa ze-LED zidinga ukulawula umehluko ekukhanyeni nombala ngaphakathi kwebanga iso lomuntu elingakwazi ukulibona, ukuze iso lomuntu likwazi ukuzwa ukungaguquguquki okuhle ekukhanyeni futhi umbala uma ubuka izikrini zokubonisa ze-LED.Ukukhanya nobubanzi bemibala yamadivayisi okuphakheja e-LED noma ama-chip e-LED asetshenziswa kuzikrini zokubonisa ze-LED anomthelela obalulekile ekuvumelaneni kwesibonisi.
Ingxenye.3
Lapho wenza izikrini zokubonisa ze-LED, amadivayisi okupakisha e-LED anokukhanya nobude beza phakathi kwebanga elithile angakhethwa.Isibonelo, amadivayisi e-LED anokukhanya okuphakathi kuka-10% -20% nobubanzi be-wavelength ngaphakathi kwama-nanometer angu-3 angakhethelwa ukukhiqizwa.
Ukukhetha amadivayisi e-LED anobubanzi obuncane bokukhanya nobude begagasi kungaqinisekisa ngokuyisisekelo ukuvumelana kwesikrini sokubonisa futhi kuzuze imiphumela emihle.
Nokho, ububanzi bokukhanya nobubanzi be-wavelength bamadivayisi okupakisha e-LED avame ukusetshenziswa ezikrinini zokubonisa ze-LED kungase kube kukhulu kunobubanzi obufanele okukhulunywe ngenhla, okungase kubangele umehluko ekugqameni nombala wama-chips akhipha ukukhanya e-LED ubonakale emehlweni omuntu. .
Esinye isimo ukupakishwa kwe-COB, nakuba ukukhanya okungenayo nobude begagasi bama-chips akhipha ukukhanya kwe-LED kungalawulwa ngaphakathi kwebanga elifanele, kungaholela ekukhanyeni okungahambisani nombala.
Ukuze uxazulule lokhu kungqubuzana kuzikrini zokubonisa ze-LED nokuthuthukisa ikhwalithi yokubonisa, ubuchwepheshe bokulungisa iphuzu nephuzu bungasetshenziswa.
Ukulungiswa kwephuzu nephuzu
Ukulungiswa kwephuzu nephuzu kuyinqubo yokuqoqa idatha yokukhanya ne-chromaticity yephikseli ngayinye encane ku-anIsikrini sokubonisa se-LED, ihlinzeka ngama-coefficients okulungisa we-pixel encane yombala wesisekelo ngamunye, futhi iwaphakela abuyele kusistimu yokulawula yesikrini sokubonisa.Isistimu yokulawula isebenzisa ama-coefficients okulungisa ukushayela umehluko we-pixel encane yombala wesisekelo ngamunye, ngaleyo ndlela ithuthukisa ukufana kokukhanya kanye ne-chromaticity nokuthembeka kombala kwesikrini sokubonisa.
Isifinyezo
Umbono wezinguquko zokukhanya kwama-chips e-LED ngeso lomuntu ubonisa ubudlelwano obungewona umugqa nezinguquko zangempela zokukhanya zama-chips e-LED.Leli jika libizwa ngokuthi ijika le-gamma.Ukuzwela kweso lomuntu kumaza ahlukene ombala kuhlukile, futhi izikrini zokubonisa ze-LED zinemiphumela engcono yokubonisa.Ukukhanya nokuhluka kombala kwesikrini esibonisiwe kufanele kulawulwe ngaphakathi kwebanga iso lomuntu elingakwazi ukulibona, ukuze izikrini zokubonisa ze-LED zibonise ukuvumelana okuhle.
Ukukhanya nobude begagasi bamadivayisi apakishwe e-LED noma ama-COB apakishwe ama-chip akhipha ukukhanya e-LED anobubanzi obuthile.Ukuze kuqinisekiswe ukufana okuhle kwezikrini zokubonisa ze-LED, ubuchwepheshe bokulungisa iphuzu nephoyinti bungasetshenziswa ukuze kuzuzwe ukukhanya okungaguquki kanye ne-chromaticity yezikrini zokubonisa zekhwalithi ephezulu ze-LED nokuthuthukisa ikhwalithi yokubonisa.
Isikhathi sokuthumela: Mar-11-2024
