I. Kev Ntsuam Xyuas
Muaj ob hom kev ntsuas feem ntau siv hauv kev ntsuas. Ib qho yog ib lub teeb emitting diode (LED) thiab ib qho yog kua siv ua kua (LCD). Ob hom kev qhia no yog qes-nqi, hloov tau yooj yim hauv configuration, thiab yooj yim rau kev sib txuas nrog ib leeg-chip microcomputer, thaum yav tom ntej muaj me me tsav tam sim no, tsawg zog noj, ntev lub neej, zoo-nrhiav fonts, ntshiab zaub, loj saib lub kaum ntse ntse, hloov tau yooj yim, thiab daim ntawv thov dav [1]. Txawm li cas los xij, lub LCD ntawm kev tswj hwm yog qhov teeb meem ntau dua vim tias DC voltage ntawm LCD electrodes yuav tsum yog 0 [2]. Txwv tsis pub, tus LCD yuav tsum tau yooj yim. Yog li, tus LCD tsis tuaj yeem raug tswj los ntawm cov teeb liab tsuas yog, tab sis cov ntawv yuav tsum tau siv. Wave sib lawv liag los tswj. LCD zaub muaj ob qho zoo li qub thiab sij hawm faib
Cov qub yog qhov yooj yim, tab sis yuav tsum muaj ntau cov kab; qhov tom kawg yog teeb meem, tab sis xav kom tsawg, uas yog txiav txim siab los ntawm kev xaiv cov hlau lead hlau. Cov nram qab no yog ib qho piv txwv ntawm cov khoom siv ua kua dej ntawm lub tshuab hluav taws xob. Lub voj voog qhia tau pom hauv (1). Lub siab ntawm lub teev tseem tawm los yog nyob rau. Thaum lub siab ntawm lub feeb nyob rau hauv cov duab ntawm tus xov tooj 1 mus rau 5, lub saum toj thiab hauv qab kuj tawm los yog nyob. Ob qho ntsiab lus tseem ceeb los yog tawm tib lub sijhawm. Txoj kev tsav tsheb yog faib kev tsav tsheb nrog kev sib haum ntawm 1/2. Muaj 11 ntu electrodes thiab ob qho tib si electrodes.
daim duab 1)
Thib ob, LCD ua qauv qhia
Tej tshuaj siv tau faib ua cov roj, kua thiab ua tau. Txawm li cas los xij, cov khoom ntawm qee cov tshuaj tsis yog nyob rau hauv peb hom. Cov dej siv lead ua kua yog ib qho ntawm lawv. Nws tsis yog ib qho kua txhij, los sis tsis muaj txhij txhua. Nws tuaj yeem ntws zoo li kua thiab muaj cov khoom muaj zog. Nyob hauv lub xeev ntuj, cov kua siv lead ua kua molecules raug muab tso rau hauv cov yeeb yam zoo heev, thiab kua siv lead ua kua molecules yog npaj rau hauv cov kev coj ntawm cov grooves [3]. LCD ntsuas ua hauj lwm los ntawm kev siv cov khoom ntawm kua muaju. Cov khoom siv lead ua kua yog ntxiv ntawm cov tshuab sab sauv thiab sab hauv qab ntawm cov duab LCD. Cov kua siv lead ua kua molecules muaj nyob rau hauv txoj kev ua haujlwm thiab muaj kev ua qhov muag. Cov kua siv lead ua kua molecules feem ntau yog pob tshab. Thaum twg ib qho voltage yog hos nruab nrab ntawm lub sab saud thiab sab nrauv, cov kua siv lead ua kua molecules tig vertically thiab poob lawv qhov kev kho qhov muag. Dub [4]. Yuav kom tiv thaiv cov kua siv lead ua los ntawm oxidizing, nws yuav tsum muaj qhov nruab nrab voltage DC nruab nrab ntawm cov LCD electrodes yuav tsum xoom [1], yog li lub LCD tsis tuaj yeem tsav los ntawm cov teeb liab tsuas yog, tab sis yuav tsum tau tsav los ntawm ib qho square yoj sib tw. Kev tsav tsheb nrawm nrawm yog qhov tshwj xeeb heev, thiab lub sij hawm faib txoj kev nrog ib qho piv txwv ntawm 1/2 yog muab ua piv txwv. Daim duab (2) qhia txog cov qauv ntaub ntawv uas yuav tsum tau tsim los ntawm ntu thiab cov electrodes kom qoj ib ce stroke los yog tawm. Los ntawm daim duab (2) peb tuaj yeem pom tias B1 thiab COM2 yog nyob rau hauv txoj kev taw qhia, ces B1 tseem ci ntsa iab; B3 thiab COM1 yog tib qho kev coj, yog li B3 tawm [5]. (qhov chaw B1 thiab B3 sib koom ib qho SEG chaw nres nkoj nkaus xwb)
daim duab 2)
Feem ntau, cov qauv ntawm cov chaw nres nkoj COM portform yog ib txwm tas. Rau qhov sib txawv ntawm txoj kev sib faib khoom 1/2-teev, cov waveforms ntawm COM1 thiab COM2 cov sab nraud yog nyob sab nraud. Yuav kom tswj cov zaub thiab tua hluav taws xob ntawm txhua cov hlab ntsha tawg, tsim nyog rau cov qauv ntaub ntawv yuav tsum raug tsim tawm ntawm cov electrodes. Qhov kev paub txog cov lus qhia hauv qab no muaj cov yam ntxwv nram qab no: 1) Nws pom tau los ntawm ob lub tshuab hluav taws xob uas muaj ob qho tib si electrodes muaj peb theem, uas yog 3 volt ntawm 0V, 1.5V thiab 3V feem ntau; 2) Ob hom electrodes COM1 thiab lub COM2 waveform yog directional; 3) Lub sij hawm ntawm cov khoom siv hluav taws xob thiab cov nplais txoj hauv kev tsav tsheb yog tib yam, uas cov electrode hloov txhua lub voj voog plaub zaug, thiab txoj cai hloov ob zaug txhua lub voj voog, uas yog lub teeb duab square. Vim tias muaj cov yam ntxwv ntawm cov electrode tsav nruj, cov kev lag luam, feem ntau ntawm cov microcontrollers thiab coj software siv los tsim cov hom electrode tsav waveforms. Rau ASIC tsim, yog tias siv txoj hau kev saum toj no, ib thaj chaw loj muaj nyob thiab muaj pes tsawg daim tawv tuaj. Tus nqi. Yog li no, qhov tsab xov xwm no yuav qhia ib lub tswv yim digital thiab analog ua tus segmented LCD tsav tsheb.
Thib peb, LCD cov duab teeb tsa tsav tsheb
1. COM1 thiab COM2 waveform cim circuit
Cov ntsiab lus tsim: Raws li tau piav qhia hauv lub Hauv Paus Qhia Txog Tus Txheej Txheem, lub waveforms ntawm ob qho cov electrodes tsau. Nws muaj 3 theem, uas yog 0V, 1.5V, 3V, thiab txhua lub voj voog hloov 4 zaug. Tus waveforms ntawm COM1 thiab COM2 yog Directional. Daim duab (3) qhia txog kev daws teeb meem. Lub vojvoog yog tsim los ntawm NMOS transistor thiab lub qhov rooj tiv thaiv 3-xeev. Qhov zaus ntawm DA yog 2 zaug ntawm d3. Lub NMOS raj txuas nrog 1.5V thiab lub rooj vag 3-lub xeev tau teem rau 3V. Qhov no yuav ua rau txhua lub voj voog hloov 4 lub sij hawm, muaj 3 theem ntawm tsau ntau ntawm cov electrode waveforms. Hauv thiaj li yuav pom los ntawm tib neeg qhov muag, tus zaus ntawm d3 yog 10 Hz. Tus HSPICE waveform tau tsim los ntawm Daim Ntawv Cuam Tshuam no yog pom nyob hauv (3-1) (siv 1.5V fais fab tuag thiab 3V voltage generated los ntawm Circuit Court Circuit Circuit peripheral voltage). Yuav tsum ua kom tiav qhov kev tsim qauv no, hauv daim duab (3), W / L ntawm N-tube yog 28uM / 4uM, W / L ntawm ob lub P-lub qhov rooj ntawm 3-xeev qhov rooj yog 8uM / 3uM, thiab W / L ntawm ob lub N-leeg yog 4uM / 3uM.
duab 3)
Daim duab (3 -1)
2. SEG lub qhov ncauj qhov ntxaij thiab lub zog
Cov ntse ntse: 11 ntu thiab 2 qho electrodes tsav cov yeeb yaj duab saib, thiab lub voj voog thiab cov electrode cycles yuav tsum nyob li qub. Cov tshuaj no muaj nyob hauv daim duab (4). Daim duab (4) yog ib lub voj voog khiav ntawm lub rooj vag XOR thiab lub rooj VAJ TSIS. Txhawm rau kom lub hom phiaj electrode thiab ntu voj voog tas, cov teeb meem tawm tswv yim d3 Thiab d3 nyob rau hauv COM circuit yog tib lub teeb liab, nws yog ib lub caij ncig square square nrog zaus ntawm 10Hz; Lub teeb liab ntawm D1 yog tsim los ntawm qhov kev teeb tsa ntawm lub rooj sab laj, nws txiav txim siab hauv cov lus qhia hauv cov lus qhia tawm ntawm cov cim suab, qhov tshwm sim los ntawm peb hom, qhov kawg yog theem 1, qhov theem 0, periodic square nthwv dej (2 zaug zaus ntawm d3, lub sij hawm yog 1/2), Daim duab 4-1, daim duab 4-2, daim duab 4-2) Cov no yog cov qauv ntawm cov ntaub ntawv sau los ntawm verify verbog_xl rau saum toj no peb. Qhov chaw nres nkoj SEG yog siv cov digital circuits thiab tsis muaj qhov yuav tsum ua rau qhov loj me me.
Daim Duab 4)
Ntawm qhov simulation waveforms ntawm cov khoom siv hluav taws xob thiab cov cim electrode, nws yuav pom tau tias cov qauv tsim muaj raws li cov cai ntawm cov kua siv lead ua kua, qhov pom kev hloov hluav taws xob hloov 4 zaug ib zaug thiab 3 txawv theem, thiab lub sij hawm ntawm cov electrode thiab cov electrode ntu yuav tsum zoo ib yam Ua kom stroke muaj teeb meem los yog tawm, cov SEG thiab (COM) cov chaw nres nkoj yuav tsum txaus siab rau txoj kev sib raug zoo. Cov kev sib raug zoo yog raws li qhia hauv qab rooj nram qab no: Thaum SEG lub rooj sab laj thiab lub npov ntawm COM1 yog thawb, qhov kev tshaw coj mus sab nrauv qis. Thaum nyob rau hauv theem, lub tsho tiv thaiv yog tu noob.
Plaub, xaus lus
Lub laub tsav tsheb hauv kev ua lag ua luam hauv lub tswv yim no tau ua tiav los ntawm kev kho vaj tse, thiab nws yog tsim los ntawm ob peb lub transistors. Tus tsim yog exquisite. Nws tuaj yeem ua tau zoo nyob rau hauv daim ntawv thov kev txhim kho. Raws li tus tsav tsheb Circuit Court LCD ntawm LCD, qhov no txo tus nqi thiab muaj kev sib tw muaj txiaj ntsig nyob hauv kev ua lag luam. . Qhov no sib txawv ntawm lwm qhov kho vajtse thiab cov kev siv software ntawm tus tsav tus tsav hauv lub khw. Peb tau muab cov neeg tsav tsheb hauv LCD rau hauv tus ASIC kas fes txiag. Lub nti tau ua tiav cov ntaub ntawv FPAG thiab kev tso kawm thiab kev caij tsheb, thiab ua haujlwm MPW hauv Shanghai.
