Ib, Txuj Ci Txuj Ci: Quantification thiab txhais ntawm brightness indicators
1. Brightness chav tsev thiab siv tus nqi
Qhov ci ntsa iab ntawm segmented LCD feem ntau yog ntsuas hauv cd / m ² (candela ib square meter), sawv cev rau qhov luminous siv rau ib cheeb tsam. Raws li kev lag luam kev lag luam:
Qeb ntu code LCD: nrog qhov ci ci ntawm 150-200 cd / m ², haum rau qhov chaw ruaj khov hauv tsev xws li cov ntsuas ntsuas ntsuas, ntsuas kub, thiab lwm yam.
High kawg ntu code LCD: nrog lub ci ci ntawm ntau dua 250 cd / m ², ua tiav los ntawm kev ua kom zoo dua polarizer, cov ntaub ntawv siv lead ua kua, thiab cov teeb pom kev zoo, tsim rau ib puag ncig sab nraum zoov lossis lub teeb muaj zog, xws li kev lag luam tswj vaj huam sib luag thiab cov cuab yeej tsheb.
2. Cov nyhuv synergistic ntawm qhov sib txawv thiab ci ntsa iab
Brightness yuav tsum tau sib piv nrog qhov sib piv (feem ntau 10: 1-600: 1) kom ua tiav cov duab meej. Piv txwv li, qee lub zog saib xyuas cov cuab yeej siv lub segmented LCD nrog lub teeb ci ntawm 200 cd / m ² thiab qhov sib piv ntawm 300: 1, uas tuaj yeem tswj xyuas qhov tseeb ntawm cov lej thiab cov cim nyob rau hauv lub teeb muaj zog, thaum qhov sib piv tsis zoo (xws li 100: 1) lub vijtsam tuaj yeem ntsib tus cwj pwm tsis meej pem hauv ib puag ncig.
3. Cov qauv ntsuas thiab cov txheej txheem
Qhov kev ntsuam xyuas qhov ci yuav tsum ua raws li tag nrho rau / tag nrho tawm (FOFO) qhov sib piv txoj kev, uas ntsuas qhov ci piv ntawm cov duab dawb kiag li rau cov duab dub tag. Tsis tas li ntawd, ANSI txoj kev sib piv (kuaj los ntawm 16 tus qauv checkerboard) tuaj yeem soj ntsuam cov txiaj ntsig tiag tiag, tshwj xeeb tshaj yog tsim nyog rau kev hloov pauv ntawm cov teeb pom kev zoo hauv cov chaw ua haujlwm.
2, Scene adaptation: brightness yuav tsum nyob rau hauv txawv ib puag ncig
1. Sab hauv qhov chaw ruaj khov: Sib npaug xaiv ntawm 150-200 cd / m ²
Nyob rau hauv ib puag ncig sab hauv xws li chaw ua haujlwm thiab chaw soj nstuam, cov twj paj nruag feem ntau yog nyob rau hauv cov teeb pom kev ruaj khov (illumination ntawm kwv yees li 300-500 lux). Lub sijhawm no, qhov ci ci ntawm 150-200 cd / m ² tuaj yeem ua kom pom tseeb cov cim thiab tswj kev siv hluav taws xob. Piv txwv li, ib lub ntsuas ntse ntse siv 180 cd / m ² ntu code LCD, ua ke nrog cov keeb kwm yav dhau los tsaus thiab cov lej dawb, thiab tsis tau ntsib teeb meem tshwm sim los ntawm qhov ci ntsa iab thaum lub sijhawm siv 5 xyoos.
2. Ib puag ncig sab nraum zoov / muaj zog lub teeb: Kev ua tau zoo tshaj 250 cd / m ²
Hauv chav tswj kev lag luam, cov khoom siv sab nraum zoov, thiab lwm yam xwm txheej, cov cuab yeej yuav ntsib lub hnub ci ncaj qha lossis qhov chaw teeb pom kev siab (qhov teeb pom kev txog li 1000-5000 lux). Lub sijhawm no, qhov ci ci ntawm 250 cd / m ² lossis siab dua yog qhov tseem ceeb. Piv txwv li, cov tswj vaj huam sib luag ntawm qee yam khoom siv cua tshuab txais 280 cd / m ² segmented LCD, uas tuaj yeem tswj tau qhov sib piv ntawm 10: 1 txawm nyob rau yav tav su hnub ci los ntawm kev tiv thaiv zaj duab xis thiab cov teeb pom kev zoo, kom ntseeg tau tias cov neeg ua haujlwm tuaj yeem nyeem cov ntaub ntawv sai.
3. Ib puag ncig tsis zoo: ob qhov kev sib tw ntawm qhov ci thiab kev ntseeg tau
Nyob rau hauv qhov txias heev (-40 degree) los yog kub siab (85 degree) ib puag ncig, viscosity hloov ntawm cov ntaub ntawv siv lead ua kua tuaj yeem ua rau ci ntsa iab. Ib qho kev sim ua los ntawm ib lub tuam txhab tshuaj lom neeg tau pom tias qhov ci ntsa iab ntawm ib ntu LCD poob li 30% ntawm -20 degree, thaum cov khoom siv kho mob siv cov khoom siv kub resistant kua siv lead ua tsuas yog lwj los ntawm 5% ntawm qhov kub thiab txias, thiab lub sijhawm ci rov qab tau luv ntawm 10 vib nas this mus rau 2 vib nas this.
3, Sib piv kev tsom xam: Brightness sib txawv ntawm segmented LCD thiab TFT xim cov ntxaij vab tshaus
1. Qhov sib npaug ntawm qhov ci ntsa iab sab saud thiab kev siv hluav taws xob
Segment code LCD: Thaum tsis muaj backlight, nws tso siab rau lub teeb pom kev zoo, thiab qhov ci ntsa iab feem ntau qis dua 100 cd / m²; Tom qab kev teeb tsa lub teeb rov qab, nws tuaj yeem ncav cuag 250 cd / m ², tab sis lub zog siv tsuas yog 0.01-0.1W.
TFT xim tshuaj ntsuam: Qhov ci ci yog feem ntau ntawm 300-500 cd / m ², thiab cov qauv ci ntsa iab tuaj yeem ncav cuag ntau dua 800 cd / m ², tab sis lub zog noj yog 5-10 npaug ntawm segmented LCD. Piv txwv li, tom qab qee lub tsheb ntsuas vaj huam sib luag txais TFT xim npo, lub zog siv hluav taws xob nce 40%, xav tau kev tsim hluav taws xob ntxiv.
2. Sib piv cov ntsiab lus pom nrog qhov yuav tsum tau ua kom ci
Qhov tseem ceeb ntawm cov cuab yeej siv hauv kev lag luam yog qhov tseeb ntawm cov lej, cov cim, thiab cov cim yooj yim, tsis yog cov duab nyuaj. Segmented LCD ua tiav "point-rau-point" tso saib los ntawm cov cwj mem raws li kev cai, tsis tas yuav tsum tau ua cov cav, ua rau muaj kev ci ntsa iab ntau dua. Hauv qhov sib piv, RGB pixel qauv ntawm TFT xim cov ntxaij vab tshaus ua rau lub teeb pom kev zoo pov tseg thaum pom cov lej monochrome, thiab qhov kev nyeem tau tiag tiag yuav tsis zoo dua li ntawm ntu LCD.
3. Kev txiav txim siab ntawm tus nqi thiab kev ntseeg siab
Ib qho kev sib piv ntawm cov chaw tsim khoom lag luam qhia tau hais tias cov cuab yeej siv 250 cd / m ² ntu LCD muaj ib tus nqi 60% qis dua TFT xim tshuaj ntsuam kev daws teeb meem, thiab qhov tsis ua tiav ntawm tsuas yog 0.5% hauv 5 xyoos, thaum TFT xim tshuaj ntsuam kev daws teeb meem muaj qhov ua tsis tiav ntawm 8%. Hauv cov chaw tsim khoom, qhov "tsim txaus yog qhov zoo" ntawm segmented LCD ua rau nws nyiam tus nqi - kev xaiv zoo.
