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Gamut Kho Ntawm LED Zaub Screen

Gamut Kho Ntawm LED Zaub Screen

Nov 16, 2017

Tam sim no, LED screen brightness kho lus thiab xim kho lus tshuab zoo tuaj yeem daws qhov teeb meem uniformity ntawm LED qhov teeb meem, thiab cov kev kho cov xim gamut yuav tsum tsis tsuas yog lub vijtsam LED zaub duab xim uniformity, xim hauj lwm ntawm txhua xim ntau tshaj yuav tsum yog tsau rau lub hom phiaj xim sib koom ua ke rau txoj hauj lwm, muaj peev xwm thiab meej tiag tiag los mus tso duab. XYZ peb qhov txiaj ntsim tseem ceeb hauv daim ntawv no yog muab los ntawm cov khoom siv ntsuas CIE1931XYZ xim system, thiab kev ntsuas qhov ci yog 2% CIE1931XYZ + 0.0015.

 

Target gamut ntawm LED zaub

  LED saib xim gamut ntawm pixels, yuav ua tau raws li liab, ntsuab, xiav LED xim coordinates ntawm daim duab peb sab. Vim txhua tus thawj xim LED.Qhov kev tswj xim yog discrete, thiab txhua pixel zaub muaj xim txawv gamut ntau. Los txiav txim siab lub xim gamut ntawm ib cov yeeb yam pixel pixel, koj tsuas yog yuav tsum tau xa cov hauj lwm xim ntawm 3 lub ntsiab xim thaum LED cov duab pixel qhia txog xim.

Txoj hauj lwm ntawm 3 lub ntsiab xim xim ntawm lub phiaj gamut ntawm tag nrho cov yeeb yam hauv LED yuav tsum yog nyob rau hauv cov xim zoo tib yam ntawm txhua cov duab pixel ntawm LED qhov screen. Raws li pom hauv daim duab 1, ob thiab P2 (P1 LED tso xim pixel xim tswj xim xim tsis muaj tseeb, ntawm no tsuas yog rau kev qhia) vim muaj xim txawv xim ntsuab xim, ob qho yeeb yam xim gamut pixels sib txawv, qhov siab tshaj 3 xim xim qhov sib tw ua ke ncig ua ke los ntawm xim P1 thiab P2 tuaj yeem tso saib. Thaum twg tag nrho cov vijtsam LED tau tso tawm kom pom ntawm daim duab, lub gamut ntawm P1 thiab P2 yog zoo ib yam, qhov tseeb qhia tau tias cov nyom zoo dua.

Nyob hauv daim duab 1, qhov seem hauv kab ntawm ob qho xim gamut vajvoos peb ceg yog ib qho kev sib txawv ntawm cov kab sib txawv, uas yog qhov zoo nkauj heev. Cov xim gamut ntawm LED yuav tsum yog ib daim duab peb sab xim gamut thaum cov xim kho ntawm gamut kho, uas yog txiav txim siab los ntawm kev sib xyaw nrog txoj kev sib xyaw uas siv los ntawm cov khoom siv sib xyaw coj los siv. Xaiv ntawm 3 lub ntsiab ntawm cov phiaj xim gamut yuav ncaj qha mus txiav txim siab cov yeeb yuj tso saib ntawm lub vijtsam zaub. Nws muaj ob qho tswv yim los xaiv qhov 3 qhov kev sib tw hauv gamut: (1) tus qauv ntawm qhov kev ua kom lub gamut, txawm tias thaj chaw ntawm daim phiaj xim peb tog yog qhov loj tshaj; (2) lub hauv paus ntsiab lus ntawm standardization, txawm tias qhov xim gamut ntawm cov zaub yog nyob ze rau ntawm tus txheej txheem xim gamut, xws li xvYCC xim gamut. Tus thawj lub tswv yim zoo ntawm cov lus qhia ntawm cov lus qhia txog lub ntsiab ntawm LED, raws li lub tswv yim thib ob tsom rua kev ua kom muaj xim thiab kev sib tw ntawm cov khoom tsim.

Nyob rau hauv daim ntawv no, ib lub tswv yim yog siv los piav qhia tias kev xaiv ntawm cov xim gamut ib qhov ua rau cov xim gamut ntawm qhov chaw loj tshaj. Hauv daim duab peb sab hauv cov kab uas muaj ntau hom xim gamut hauv Daim Duab 1 yog lub hom phiaj ntawm P1 thiab P2 rau daim ntawv thov lub tswv yim 1. Lub phiaj gamut yog sawv cev los ntawm cov ntaub ntawv qhia hauv lub rooj 1.

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Cov kob tswj xim thiab xim gamut ntawm 9 LED tso tawm pixels nyob rau hauv Table 1 yog muaj nyob rau hauv daim duab 2. Muab xam los ntawm cov xim ntau ntawm cov duab pixels, xws li formula (4):

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Raws li qhia hauv daim duab 2 qhov xim gamut nyob rau hauv pej xeem kom ntau li ntau tau hauv cov phiaj xim gamut, loj qhov chaw, xaiv xaiv rau RGB xim cov hauj lwm: (0.687, 0.3105), (0.16, 0.69), (0.138, 0.08). Lub 3 tus saib xyuas muaj kev sib txuas ua ke los tsim ib lub phiaj xwm kho lub phiaj.

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