Amabala amnyama avele kwiscreen seTV – izizathu zokususa umbane

Kukho izizathu ezininzi zokuba amabala amnyama avela kwiTV. Kodwa kwiimeko ezininzi, ubukho babo bubonisa umonakalo kwi-matrix. Kwaye akunyanzelekanga ukuba ibe ngoomatshini. Kungenzeka ukuba i-diffuser ixotyulwe ngenxa yesiphene sokwenza. Kwaye ngamanye amaxesha indawo emnyama kwiTV inokupheliswa nguwe! Kodwa kwiimeko ezininzi, kufuneka ufune uncedo kwiziko lenkonzo eligunyazisiweyo lomenzi.

Izizathu zamabala amnyama kunye ne-gray shading kwi-matrix yeTV

Isiseko sayo nayiphi na iTV yanamhlanje (kwaye iliso ngokunjalo) yimatrix. Kwaye iqulathe iileya ezininzi, ngakumbi:

1. Isihluzi sokucoca . Lungisa ukuhanjiswa kokukhanya okukhutshwe sisibane esingasemva.
2. Iikristale zolwelo . Benza “umfanekiso” wokugqibela kwisikrini. Umbala wepixel nganye ulawulwa yintsimi ye-electromagnetic evelisayo.
3. Isihluzi sokucoca sangaphandle . Ukuba ilahlekile, ngoko endaweni yomfanekiso kwisikrini kuya kubakho imvelaphi emnyama engwevu kuphela. Nokuba umaleko weekristale zolwelo, kunye ne-backlight, zisebenza ngokufanelekileyo.

Kwakhona emva kwe-matrix kukho ukukhanya kwe-LED. Ibekwe ngokulinganayo phezu kwayo yonke i-diagonal plane ye-TV. Njengomthetho, lo ngumgca we-LED, apho into nganye idibaniswe ngokufanayo (kwezinye iiTV zenzeke ngochungechunge, kodwa olu yilo alusoloko lusetyenziswa ngoku).

Kwaye ii-LED nazo zinezibonelelo zazo zokusebenza (ngokomndilili – ukusuka kwii-30 ukuya kwii-50 iiyure eziliwaka).

Ngako oko, ezi zizathu zilandelayo zokuba kutheni amabala amnyama avele kwi-LCD TV inokwahlulwa:

• “ezaphukileyo” pixels ;
• umonakalo womatshini kwi-matrix;
• Ukungaphumeleli kwendlela yokukhanya kwe-backlight (iquka ngokuthe ngqo izibane ze-LED, kunye ne-inverter eguqula okwangoku okanye ilawula i-voltage yayo);
• isiphene sokuchithachitha umaleko;
• i-stratification yomnye wemigangatho ye-matrix (i-polarization);
• ukusilela kwetshiphu yevidiyo (iprosesa yegraphic, enoxanduva lokusetyenzwa komqondiso wedijithali, ukuyiguqula kunye nokuyikhupha kwikristale yolwelo matrix).

“Iiphikseli ezingalunganga

Umfanekiso okwimatriki yekristale elulwelo uneepikseli ezincinci. Kwaye malunga neepesenti ezingama-95 zeemeko, indawo emnyama esikrinini sisiphumo nje somonakalo wabo. Ijongeka njengamachaphaza amancinci anemibala emininzi ngaphandle kwehalo ngeenxa zonke. Umbala wabo unokuba phantse nayiphi na: eluhlaza okwesibhakabhaka, eluhlaza, emnyama, emhlophe, ebomvu. Ngelishwa, ukuwohloka okunjalo akukwazi ukulungiswa, ngakumbi ngokwalo. Kodwa ngelo xesha, abavelisi abaninzi kwimiyalelo yokusetyenziswa babonisa ngokuthe ngqo ukuba ubukho beepikseli ezininzi “eziphukileyo” ziqhelekileyo. Ngokomzekelo, kwi-Samsung, ukuba kukho ezi-3 kuphela kwisikrini, oku akuthathwa njengetyala lewaranti. Ukuba ngaphezulu, ke i-matrix iya kutshintshwa ngaphandle kwentlawulo. Ngolwazi oluthe vetshe, nceda uqhagamshelane nomenzi ngokuthe ngqo.

Yintoni ebangela ukuba iipixels “zaphukileyo” zivele kwizikrini zeLCD?

Iingcali zithi zinokuthi zicatshukiswe mhlawumbi ngomonakalo womatshini kwi-TV (impembelelo kwi-matrix), okanye i-voltage yehla ngokukhawuleza (ingakumbi, idlula ixabiso layo elivumelekileyo, ngaphezu kwe-230 – 250 Volts). Ngoko ke, ukuba i-current kwinethiwekhi yombane yasekhaya ayizinzile, ngoko kuyacetyiswa ukuba udibanise iTV nge-regulator yangaphandle ye-voltage – oku kunceda ngokwenene ukwandisa ubomi bokusebenza kwezixhobo.

Umonakalo womatshini weMatrix

Ikakhulu ikhangeleka njengendawo engqukuva emnyama kwiscreen seTV esinemiphetho engalinganiyo.

Kwenzeka nasemva kokubetha kancinci kwimatrix okanye kwityala leTV!

Ibonisa isekethe evulekileyo enikezela enye yemimandla yekristale engamanzi. Akunakwenzeka ukulungisa ukuphuka okunjalo. Kukho kwakhona umngcipheko wokuba amabala anjalo aya kwanda ngobungakanani ngexesha. Oko kukuthi, ngokunokwenzeka kwe-95%, i-matrix kungekudala iya kuba yinto engasebenzisekiyo. Kufuneka kuqatshelwe ukuba ukusebenzisa iTV enematrix eyonakeleyo ngoomatshini ayingombono olungileyo. Kukho ithuba lokuba kukho isiphaluka esifutshane phakathi kweesekethe zokubonelela nge-matrix, eya kukhokelela ekungaphumeleli kwe-inverter, okanye i-GPU. Ukulungisa oko kuqhekeka akunakwenzeka. Oko kukuthi, kwixesha elizayo kuya kufuneka uthenge iTV entsha ukuze utshintshe indala.

Ukungaphumeleli kwendlela yesibane esingasemva

Kukho iinguqu ezi-2 zokophuka okunjalo:

1. Ukungaphumeleli kwe-LED ngokwayo . Oko kukuthi, i-semiconductor equlethwe kuyo, i-corny yatshiswa. Akunakwenzeka ukutshintshwa, kumaziko enkonzo anikezela kuphela ukutshintshwa okupheleleyo kwazo zonke iintambo ze-LED-backlight. Kodwa le yinkqubo engabizi kakhulu.
2. Ukungaphumeleli kwe-inverter, ejongene nokubonelela ngoku kwi-backlight . Kule meko, i-LED inokuqala ingasebenzi kuphela kwindawo ethile (umzekelo, kwikona ephezulu ngasekhohlo). Kodwa kwixesha elizayo, ezinye iindawo zokukhanyisa ngokuqinisekileyo ziya kucinywa amandla.

Ijongeka ngakumbi njengendawo emnyama ene-halo ehambelanayo kunendawo emnyama eyahlukileyo. Kodwa kwangaxeshanye, ukuba ukhanyisa isibane esinamandla kwindawo emnyama, uya kuqaphela ukuba umfanekiso uboniswa ngokwesiqhelo kwi-liquid crystal matrix. Ayikhanyi nje. Akufunekanga wenze into ngokwakho, kungcono ukuba uqhagamshelane neziko lenkonzo eligunyazisiweyo ukuze ufumane uncedo ngokukhawuleza. Kufuneka kwakhona kuqatshelwe ukuba ukuba i-backlight yonakalisiwe, inokuphinda ibuyele ngokwayo. Kodwa le yimpembelelo yexesha elifutshane. Kuphela ukuqinisekiswa okongeziweyo ukuba kukho ukuphulwa kwiisekethe zokubonelela ngeentambo ze-LED.

Isiphene sokuchithachitha umaleko

Ukusuka ngaphakathi, iplastiki yeplastiki yeTV ngasemva igxininiswe ngoluhlu olukhethekileyo lokusabalalisa, ngokubonakalayo okufana nentsimbi yentsimbi eqhelekileyo. Inoxanduva lokubonakalisa ukukhanya okukubetha kwi-backlight ye-LED, kunye nakwi-polarization layer (ibonisa ukukhanya okuwela kuyo). Kwaye ukuba naziphi na iindawo ezinobumnandi, ezonakalisiweyo, ezixobukayo zenza kuluhlu olusasazwayo, ke oku kukhangeleka njengendawo emnyama kwisikrini. Ngendlela, ngokuqhelekileyo isiphene esinjalo sivela emva kokuba i-matrix ilungiswe kumaziko enkonzo angagunyaziswanga. Ngenxa yokuba kukho i-scattering layer ifakwe ngesandla, oko kukuthi, phantse akunakwenzeka ukufezekisa ukugudiswa ngokupheleleyo kunye nokungabikho kokugoba kunye nokugoba. Kumaziko enkonzo agunyazisiweyo, njengomthetho, yonke ikhava yangasemva iyatshintshwa, apho i-scattering layer isetyenziswa nakwi-factory. Ngokufanelekileyo, ukuba nokwenzeka kokulungiswa okukumgangatho ophantsi kunyuswe ngokupheleleyo.

Ukuchithwa kwefilimu ye-polarizing

La mabala amnyama kwiscreen seTV angathatha phantse naluphi na uhlobo. Amaxesha amaninzi – ajikelezwe, kunye nemiphetho elinganayo, kunye nemivimbo. Kodwa ngoxinzelelo oluncinci, umfanekiso unokuba yinto eqhelekileyo ngokufutshane, njengakwi-matrix esebenza ngokupheleleyo. Ibonisa ukuba ifilimu ye-polarizing ihlutshiwe. Kwaye oku kwenzeka ngenxa yomonakalo owenziwe ngoomatshini, okanye ngenxa yokusetyenziswa kweemveliso zokucoca ezinobundlobongela ukusula isikrini seTV. Ngaphantsi rhoqo – ngenxa yomtshato wefektri. Koomabonakude bakudala, bekusekho ingxaki xa ifilim yepolarizing delamination isenzeka ngenxa yobushushu obugqithisileyo bematrix. Ngenxa yobushushu obuphezulu, iglu yanyibilika nje! Oku kudla ngenxa yokuba iTV ibekwe kufuphi nodonga okanye izifudumezi (kwaye ayipholi kakuhle). Ukuzilungisa ngokwakho akunakwenzeka.

Ukusilela kwetshiphu yevidiyo

Enye yezona zinto zinqabileyo kwaye ngexesha elifanayo ukuphazamiseka okuyinkimbinkimbi. Itshiphu yevidiyo isilela kakhulu ngenxa yobushushu obugqithisileyo okanye iziphene zasefektri. Kule meko, izinto zakudala ezahlukeneyo, amabala phantse nawuphi na umbala unokuvela kwiscreen. Kodwa akukho mfanekiso uqhelekileyo okanye imenyu yomzobo inokufunyanwa nangayiphi na indlela. I-TV iphendula kuphela ukuyivula kunye nokucima “ukusuka kwindawo yokuphuma”, kuba kwiiTV zanamhlanje kunye neempawu ezivela kwi-infrared transmitter nazo zicutshungulwa yiGPU. Oku kuqhekeka kwakhona kupheliswa kuphela kwiimeko zeziko lenkonzo. Kwaye kukho umngcipheko wokuba akunakwenzeka ukulungisa i-TV, ekubeni ii-chips ze-GPU azifumaneki kuzo zonke iimodeli (kuxhomekeke kumgaqo-nkqubo wangaphakathi womenzi, kunye nokufumaneka kwezixhobo zokuncedisa).

Izizathu ezongezelelweyo zamabala amnyama kwiimpawu zeTV ezahlukeneyo

Ngokomgaqo, izizathu zamabala phantse zonke iiTV ziyafana, ekubeni isakhiwo sematrix kunye nomgaqo wokubonisa umfanekiso ufana. Kodwa kukho iinketho ezimbalwa:

1. KwiiTV ze- Samsung ezinematriki ze-AMOLED, amabala amnyama angabonisa “ukutshisa ngaphakathi”. Akukho kukhanyisa ngasemva, njengoko ipixel nganye ngokobuchwephesha yi-LED ephilayo. Ngelo xesha, amabala abukeka njenge-afterimage (idla ngokuba yi “ghosts”).
2. Amabala amnyama kwi- LG TV screen  ngamanye amaxesha sisiphumo glitch software! Ngokuchanekileyo, ngenxa yokwaphulwa kwe-AVI kunye ne-MPEG4 iteknoloji yekhowudi yekhowudi. Kwiimeko ezinjalo, uhlaziyo lwe-banal firmware usebenzisa izixhobo ezakhelwe ngaphakathi zeTV ngokwayo inceda. Ngale ngxaki, amabala amnyama avela kwiindawo ezahlukeneyo ngalo lonke ixesha uyilayita, ngaphandle kolandelelwano lomjikelo.

Yintoni onokuyenza ekhaya ukulungisa i-smudges kunye nokucima umbane kwi-smart TV yakho

Kwiimeko ezinqabileyo kakhulu, amabala amnyama ayanyamalala ngokwawo ekuhambeni kwexesha. Oku kwenzeka ukuba zivela ngenxa ye-delamination ye-polarization layer kunye nokushisa okuncinci kwe-matrix. Kodwa oku malunga ne-0.5% yazo zonke iimeko. Kwezinye iimeko, utyelelo kwiziko lenkonzo luyafuneka. Kwaye ngokukhawuleza, ngcono. Ungancitshiswa njani umngcipheko wamabala? Ezi ngcebiso zilandelayo mazilandelwe:

• ngayo nayiphi na indlela ekhoyo ukulinganisa umonakalo owenziwe ngoomatshini kwiTV (umzekelo, ukuba kukho abantwana abancinci endlwini, kungcono ukubeka iTV eludongeni kumphakamo ubuncinane we-1.5 – 1.7 yeemitha);
• musa ukubeka i-TV kufuphi nodonga (i-indent encinci efunekayo, abavelisi babonisa kwimiyalelo yabo, i-15 centimeters);
• musa ukuseta ukukhanya okukhulu kwe-backlight (kwiimeko ezininzi oku akufuneki, kwaye i-50 – 70% yezinga eliqaqambileyo likhululekile kubabukeli abaninzi);
• qhagamshela iTV ngolawulo lwamandla ombane lwangaphandle (iya kunciphisa amathuba okuba ukusilela kwe-inverter kunye neprosesa yemizobo).

Ngoko, ukuba kukho indawo emnyama kwisikrini se-LCD TV, ke isisombululo esona sisombululo kukuthumela izixhobo iziko lenkonzo. Ngelo xesha, inkosi kufuneka ichaze phantsi kweemeko apho isiphene sivele, zeziphi iziganeko ezandulelayo. Ukuba ukutshintshwa ngokupheleleyo kwe-matrix kuyimfuneko, oku kuya kubiza malunga ne-30 – 70% yeendleko zeTV entsha (kuxhomekeke kwimodeli ethile). Ukuba ingxaki ikwiprosesa yegraphics, ukutshintshwa kwayo kubiza malunga ne-30 – 50% yeendleko zeTV, kodwa inkosi ayisoloko ilawula ukufumana inxalenye esecaleni.