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Kev qhia ntawm LCD tshuab nraaj thiab cov ntawv nyeem

Jul 03, 2018

Kev qhia ntawm LCD tshuab nraaj thiab cov ntawv nyeem

Nyob rau xyoo 1970, Fergisas ua thawj tus qauv LCD. Ua ntej ntawd, LCD muaj ntau yam tsis zoo: nws lub hwj huam siv tau loj heev, nws txoj hauj lwm lub neej luv luv, thiab nws cov duab zoo ib yam. Nws tsis yog kom txog thaum 1971 tias LCD tau txais los ntawm cov pej xeem thiab tau nrov. LCD siv LCD npo los tso saib cov duab, thiab LCD npo hloov lub teeb ci kom tsim xim hloov los ntawm kev hloov cov khoom hluav taws xob. Lub vijtsam sablaj (LCD screen) yog ua los ntawm ob lub khaubncaws sab nraud povtseg ntawm cov iav lossis cov yas ci yas uas siv cov kua siv ua kua, thiab lub teeb yuav dhau los ntawm lub vaj huam sib luag. Tom qab switching on tus tam sim no, cov kua siv lead ua yuav hloov tau cov kev taw qhia kom dhau txoj kev dhau ntawm lub teeb, kom cov kua siv lead ua tau kho nws cov xim. Cov lus LCD siv feem ntau siv hauv cov tshuab computer los sis multimedia projectors. Lub rooj LCD lub qauv ntawm cov computers feem ntau yog LCD technology.
Cov ntxaij thaum ntxov LCD tsis ruaj tsis khov thiab tsis tsim rau huab hwm coj ntau lawm. Nws tsis yog kom txog rau thaum ib tug neeg tshawb fawb British tau pom tias cov khoom siv ua kua dej ruaj khov ruaj khov rau cov khoom siv tshuab LCD ua rau muaj kev sib tw. LCD yog dav siv hauv computer, kev ua si thiab cov watches.
Tam sim no LCD zaub yog nrov vim tias nws cov kev npaj tiav, cov khoom lag luam thiab cov ultra-nyias nta. LCD tau nyob rau hauv keeb kwm txog 30 xyoo. Vim txoj kev loj hlob ntawm txoj kev tshawb nrhiav thiab kev loj hlob yav dhau los, LCD cov duab tsis pom kev vim nws tsis tuaj yeem muab duab zoo. Tab sis hnub no, qhov kev thov rau LCD nce thiab nrov. Nws yog qhov zoo nkauj uas zoo nkauj, ua qauv zoo, tsis muaj chaw thiab tsawg zog. Tam sim no, feem ntau ntawm cov neeg nplua nuj siv nws.
Lub sijhawm tam sim no, ntau tus neeg tau txais kev pom thiab pom tus cwj pwm, tos txog tus nqi ntawm cov lus qhia LCD thiab vam hais tias LCD tau muab kev ua haujlwm zoo dua ntawd qhov ci ntsa iab, kev sib tw thiab qhov sib txawv, uas tsuas yog raug xa tawm ntawm cov txwm CRT rau cov duab LCD thaum ntawd. Lub tshuab qub thaum ntxov yog qeeb, tsis muaj kev sib txig thiab tsis zoo. Tshaj tej ntawm, cov txheej txheem thaum ntxov tuaj yog lub caij ua ke, uas tuaj yeem muab cov ntawv teev lus ntse, tab sis nws yuav tawm ntawm cov khoom seem tom qab tso qhov khoom tawm. Niaj hnub no, feem ntau cov dub-thiab-dawb phau ntawv sau, pagers thiab cov xov tooj txawb tau siv cov khoom ua si qeeb zog. Vim hais tias LCD yuav muab ntau cov ntawv nyeem thiab cov duab clearer tshaj li CRT.
Muaj ob hom LCD: DSTN (ob chav super loisted nematic) thiab TFT (thin film transistor), uas yog hu ua passive thiab active zaub. LCD muaj cov khaubncaws sab nraud povtseg ntawm cov lej thiab cov txheej txheem raws li nram qab no: Pejxeem lim, nyias iav phaj, electrode, sab txheej, kua siv ua kua, sab txheej, electrode, nyias iav phom, xim av dawb.

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Cov lus qhia ntxov hauv cov computers siv 8 nti cov xim dub thiab dawb. Tab sis tus mainstream ntawm LCD zaub yog tsim los mus dhia array thiab loj zaub loj. Hnub no lub LCD yuav luag tag nrho siv TFT vaj huam sib luag, TFT yuav txhim khu tau qhov ci thiab tuav cov zaub nyhuv loj loj.
Tus ua haujlwm ntawm LCD
Luam kab ntawm TFT LCD zoo li ntau cov khaubncaws sab nraud povtseg ntawm cov qhaub cij. Cov txheej txheej sab nraud ntawm ib sab yog txheej iav substrate, thiab nruab nrab ntawm iav substrate yog ib zaj duab xis nyias nyias. Xim lim thiab LCD txheej yuav muab cov xim liab, xim ntsuab xiav thiab xim ntsuab peb. Feem ntau, muaj cov teeb nyob rau sab nraum qab ntawm LCD los tso saib duab.
Feem ntau, yog ntev li tam sim no tsis hloov, cov kua siv lead ua kua yog nyob hauv lub xeev tsis yog crystalline. Lub sij hawm no lub kua siv lead ua pub rau txhua lub teeb kom dhau. Tom qab cov kua siv lead ua kua raug cuam tshuam los ntawm cov kev hloov pauv hloov, cov kua siv lead ua tsuas tso cai rau ib qho ntawm lub teeb kom dhau. Lub tshav pauv ntawm lub teeb yog tswj los ntawm cov kua crysta

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Thaum cov pa hluav taws xob hloov ntawm cov kua hloov ua kua, cov kua siv lead ua yuav hloov, ces qhov ci ntawm lub teeb yuav txawv dua, ua rau muaj kev hloov xim. Ib daim ntawv tiav TFT muaj ntau pixels, txhua pixel zoo li ib tug transistor uas yuav tau hloov. Qhov no tuaj yeem tswj kev daws teeb meem ntawm TFT zaub. Yog hais tias qhov daws teeb meem ntawm LCD yuav ncav cuag 1024 x 768 pixels (SVGA), nws muaj ntau yam pixels los tso saib.