Ib, Qhov kev sib tw ntawm qhov kub thiab txias ntawm lub hwj chim noj ntawm segmented LCD: lub cev mechanism thiab contradictions
Nyob rau hauv qhov kub tsis txias, segmented LCD ntsib peb qhov tsis sib haum xeeb:
Kev khov ntawm cov kua siv lead ua kua molecules: Cov khoom siv ua kua ua kua muaj viscosity ntau tshaj 1000cP ntawm -40 degree, thiab lub sij hawm molecular flipping yog ncua los ntawm 20ms ntawm chav tsev kub mus rau ntau tshaj 500ms, uas ua rau 2-3 fold nce nyob rau hauv kev tsav tsheb voltage los tswj cov lus teb ceev thiab ncaj qha nce zog noj.
Tsav hluav taws xob teb qeeb: qhov pib hluav taws xob ntawm cov khoom siv semiconductor nce ntawm qhov kub thiab txias, thiab lub sij hawm them nqi thiab tawm ntawm cov capacitors ntev. Yog tias lub sij hawm tsav tsis zoo, nws yuav ua rau muaj kev siv hluav taws xob ntau ntxiv.
Kev sib npaug ntawm kev siv hluav taws xob thiab kev ua haujlwm: Txawm hais tias ua kom lub zog tsav tsheb lossis tus ncej tus nqi tuaj yeem txhim kho cov lus teb, nws yuav ncaj qha nce lub zog siv zog; Yog hais tias tus nqi refresh yog txo kom txuag tau lub zog, nws kuj tseem yuav ua rau cov duab ghosting lossis cov ntaub ntawv hloov tshiab qeeb.
Cov kev txwv ntawm cov kev daws teeb meem ib txwm muaj: Txawm hais tias qhov teeb meem ntawm molecular freezing tuaj yeem daws tau los ntawm cov cua kub tsis tu ncua hauv cov yeeb yaj kiab thaum ntxov, qhov kev siv hluav taws xob txuas ntxiv yog siab li 500mW, deb tshaj qhov kev siv hluav taws xob zoo li qub ntawm segmented LCD los ntawm ob peb microwatts, uas ua rau txo qis ntawm tag nrho cov zog ntawm lub cev.
2, Technological breakthrough: Plaub seem optimization ua tiav qhov kub thiab tsawg zog noj
Niaj hnub no low -kub ntu code LCD tau ua tiav qhov teeb meem ntawm qis-kub siv hluav taws xob los ntawm kev sib koom ua ke tshiab hauv cov ntaub ntawv, tsav tsheb, qauv, thiab cov txheej txheem algorithms
1. Material Innovation: Antifreeze Liquid Crystal thiab Extreme Cold Resistant Substrate
Ultra low temperature kua siv lead ua mis: siv perfluorinated kua siv lead ua tebchaw (sau rau 70% -80%) xws li fluorinated cyclohexyl biphenyl, nrog iav hloov kub Tg<-60 ℃ and a viscosity of only 250cP at -40 ℃ (1/4 of conventional liquid crystals). Combined with 5% -10% siloxane side chain liquid crystal as a flowability additive, the viscosity can be further reduced by 15% -20%.
Dielectric enhancement technology: Adding 10% -15% cyano substituted benzene derivatives to increase the dielectric anisotropy Δ ε>20 (kwv yees li 15 ntawm chav tsev kub) thiab txhim kho qhov rhiab heev ntawm qis- qhov kub thiab txias teb hluav taws xob teb.
Optimization ntawm substrate thiab polarizer: siv ultra- iav hloov tau yooj yim (thickness 50-100 μ m) los yog PI polyimide zaj duab xis (Tg<-70 ℃) to replace traditional soda lime glass; The polarizing film uses a fluorine based PVA film (temperature range -60 ℃~120 ℃) and a perfluoroether adhesive layer, with a polarization efficiency of over 85% maintained at -40 ℃.
Cov nyhuv: Ntawm -40 degree, lub sij hawm flipping ntawm cov kua siv lead ua kua molecules yog txo kom tsawg tshaj li 80ms, thiab cov tsav tsheb voltage yuav tsum tau txo los ntawm 30%.
2. Innovation nyob rau hauv Tsav Circuit Court: dav kub, siab voltage, thiab ceev teb
Adaptive ultra-high voltage drive: Design a 20V programmable power module (based on MAX1771 boost chip, efficiency>90%), uas cia li tso tawm qhov tsav tsheb ntawm 10-12V ntawm -40℃(tsuas yog 5V ntawm chav tsev kub), ua kom muaj zog txaus hluav taws xob kom nkag mus rau cov kua dej muaj kuab zoo.
Bipolar tsav waveform: Muab piv rau unipolar waveform, nws txo cov lus teb qeeb los ntawm ion residue thiab ua kom cov lus teb ceev los ntawm 30% ntawm -40 degree.
Ncej tus nqi thiab lub luag hauj lwm lub voj voog optimization: Tus ncej tus nqi tau nce los ntawm cov pa 32Hz mus rau 128Hz, lub luag hauj lwm voj voog ntawm ntau-channel tsav tau nce los ntawm 1/8 mus rau 1/2, thiab qhov tseeb tsav tsheb zaus ntawm ib ntu tau mus txog 64Hz, zam molecular "freezing".
Overdrive thev naus laus zis: Siv 1.5 npaug ntawm qhov ruaj khov- lub xeev voltage pulse (ntev rau 3-5ms) thaum lub sijhawm hloov ntawm ntu ntu kom nrawm molecular flipping thiab rov ua dua qhov qub, ntsuas qhov nrawm thiab siv zog.
Cov nyhuv: Ib ntu kev hloov pauv lub sijhawm Tsawg dua lossis sib npaug li 60ms ntawm -40 degree, puv npo refresh lub sijhawm Tsawg dua lossis sib npaug li 150ms, dynamic zog noj ncov Tsawg dua lossis sib npaug li 200mW (suav nrog cov cua sov pulse).
3. Kev tsim kho tshiab: Micro nano electrodes thiab hluav taws xob ua kom zoo dua qub
High density electrode array: txo qhov kev ncua deb ntawm ntu electrodes thiab cov electrodes ntawm 50 μm mus rau 20 μ m, nce lub zog hluav taws xob los ntawm 150%, thiab txo qhov pib voltage pib.
Sawtooth shaped electrode edge: Using the "edge field effect" to generate a gradient electric field, the molecular flipping time difference is reduced to within 10ms (traditional flat edge electrode difference>50 ms).
Muab ob npaug rau txheej cross electrode: Ntxiv cov khoom siv hluav taws xob hauv qab ntu electrodes los tsim peb lub- qhov hluav taws xob qhov chaw, daws qhov teeb meem ntawm cov lus teb tsis txaus nyob rau hauv cheeb tsam hauv nruab nrab, thiab nce qhov nrawm hauv cheeb tsam hauv nruab nrab los ntawm 40% ntawm -40℃.
High conductivity ITO zaj duab xis: siv indium tin oxide + nyiaj nanowire composite zaj duab xis (thaiv tsis kam<5 Ω/□), resistance change rate<3% at -40 ℃ (traditional ITO>10%).
Cov nyhuv: Hluav taws xob ua haujlwm tau nce los ntawm 40%, kev tsav tsheb tam sim no nce ntxiv 3 zaug.
4. Algorithm innovation: qis- tswj qhov kub thiab txias thiab ntse refresh
Millisecond theem pulse cua sov: Integrated micron qib graphene cua sov zaj duab xis (nyob 1/4 ntawm qhov screen cheeb tsam), siv 10ms mem tes cua sov (nrog rau lub luag hauj lwm voj voog ntawm 10%), nrog rau ib lub cua sov zog noj tsawg tshaj li 50mW (1/10 ntawm tas mus li cua sov).
Temperature triggering mechanism: Qhov ntsuas kub tau kuaj pom los ntawm cov yeeb yaj kiab nyias thermocouple (lub sijhawm teb<10ms), and heating is only started when it is<-35 ℃, and then turned off when the temperature rises to -25 ℃.
Kev tshwm sim tsav tsheb tshiab: Rov ua dua tshiab txhua 10 vib nas this thaum lub sijhawm ua haujlwm zoo li qub (lub zog siv tsawg dua lossis sib npaug li 5 μ W), thiab qhib "ceev refresh hom" (128Hz tus ncej tus nqi + siab-voltage drive) thaum hloov tshiab tam sim, faib lub zog noj raws li xav tau.
Segment code compression kis tau tus mob: Encode 8 ntu ntawm cov cim tsav digital rau hauv 3-ntsis binary cov lus qhia, txo cov ntaub ntawv ntim los ntawm 70% thiab compressing cov lus qhia ua tiav lub sijhawm ntawm 200 μs rau 50 μs.
Cov nyhuv: Kev siv hluav taws xob zoo li qub tau txo qis rau hauv 5 μ W, thiab kev siv hluav taws xob zoo sib piv tau zoo dua los ntawm 80%.
3, Kev lag luam daim ntawv thov: Tswv yim tus nqi qis - kub ntu code LCD
1. Polar scientific tshawb nrhiav thiab aerospace
Hauv cov khoom siv saib xyuas ib puag ncig ntawm Antarctic qhov chaw tshawb fawb, qhov qis - qhov kub thiab txias ntu code LCD yuav tsum ua haujlwm tsis tu ncua hauv qab -40℃. Los ntawm cov kev ua kom zoo tshaj plaws saum toj no, qee tus qauv ntawm cov sensor ua tiav lub sijhawm ua kom tiav puv npo ntawm tsawg dua lossis sib npaug li 150ms, kev siv hluav taws xob zoo li qub tsuas yog 5 μ W, thiab tuaj yeem txhawb nqa kev ua haujlwm tsis tu ncua rau ntau dua 1 xyoos nrog AA roj teeb, deb tshaj li cov tshuaj ib txwm siv lub roj teeb 3 hli.
2. Industrial txias saw thiab khoom siv sab nraum zoov
Nyob rau hauv qhov ntsuas kub tswj lub davhlau ya nyob twg ntawm txias saw logistics, qhov qis - qhov kub thiab txias ntu code LCD yuav tsum tso saib kub, av noo thiab lwm yam ntaub ntawv nyob rau hauv ib puag ncig ntawm -30℃. Tom qab siv cov micro nano electrodes thiab tshaj tsav tsheb, cov lus teb ceev ntawm lub cuab yeej ntawm -30℃yog zoo ib yam nrog rau hauv chav tsev kub, thiab lub zog noj yog 80% qis dua OLED tswvyim.
3. Cov tub rog thiab cov cuab yeej tshwj xeeb
Cov tub rog tactical terminals xav tau kev txhim khu kev qha ntawm daim duab qhia chaw, kev tswj xyuas, thiab lwm yam ntaub ntawv nyob rau hauv ib puag ncig ntawm -50℃. Los ntawm kev siv ob npaug - txheej cross electrodes thiab adaptive high-voltage tsav, ib qho qauv ntawm cov cuab yeej siv tau tuaj yeem ua tiav puv npo hloov tshiab hauv 1 thib ob ntawm -50 degree, nrog lub zog siv tsuas yog 150mW, ua tau raws li cov qauv tub rog nruj.
