Yuav Ua Li Cas Kub Platens Siv Hauv Kub Stretching ntawm Polymer Films rau Optical Retarders?

Lub quarter-yoj phaj nyob rau hauv lub voj voog polarizer, uas tso cai rau lub vaj huam sib luag LCD nyeem hauv tshav ntuj, yog ib daim ntawv nyias nyias nyias. Peb muab nws ib qho kev ua haujlwm kho qhov muag ntawm kev thim ib feem ntawm lub teeb polarized txheeb ze rau lwm tus ntawm cov txheej txheem kev tswj xyuas cov txheej txheem ncab uas tau ua tiav ntawm qhov ntsuas kub nruj heev. Cov cua sov platens uas npaj cov yeeb yaj kiab ua ntej ncab yog cov thermal sculptors ntawm lub teeb nws tus kheej.

Cov rhuab platen polymer zaj duab xis stretching optical retarder txheej txheem yog cov kauj ruam tseem ceeb hauv qhov kev tsim ua ntu zus thiab cov thermal precision yog ncaj qha cuam tshuam rau hauv kev ua haujlwm kho qhov muag.

Lub luag haujlwm ntawm Kub Platens hauv Optical Film Tsim
Polymer optical retarders ua hauj lwm los ntawm kev tswj cov molecule orientation kom ua tiav cov txheej txheem ncua sij hawm. Nws tsis yog cov khoom siv raw uas muaj qhov tsim nyog birefringence tab sis qhov no yog ntxias los ntawm stretching nyob rau hauv zoo tswj kub tej yam kev mob.

Lub rhuab platen system muaj:

Uniform zaj duab xis kub txias txias

Kev ruaj ntseg txhua yam kev txhawb nqa thaum cua sov

Tswj kev hloov pauv mus rau qhov mob hnyav

Kev tiv thaiv hauv zos thermal gradients

Lub platen yog ib qho mos, kub, zoo kawg nkaus hlau tiaj tus uas ua ntej- softens cov yas txaus los kos rau hauv lub teeb manipulating kev txiav txim.

Cua sov cov yeeb yaj kiab polymer mus rau qhov ntsuas kub ntau
Cov yeeb yaj kiab polymer, feem ntau yog polycarbonate lossis cyclo-olefin polymer, yog rhuab mus rau qhov kub ntawm nws cov iav hloov kub (Tg) los ntawm ob peb degrees.

Lub sijhawm no:

Polymer chains ua mobile

Kev txo qis hauv kev ntxhov siab

Cov khoom tau mos tsis muaj melting

Optical uniformity yog qhov kub thiab txias heev

Lub rhuab platen yuav tsum muab qhov ntsuas kub zoo ib puag ncig tshaj qhov dav ntawm zaj duab xis.

Cov txheej txheem ib txwm xav tau:

Kub stability ± 1 degree

Me me kub gradients thoob plaws qhov dav

Uniform cua sov ntawm qhov chaw sib cuag

Txhua qhov kev hloov pauv kub tuaj yeem ua rau tsis yog -kev coj tus qauv molecule orientation thiab tsis yog - qhov tseem ceeb ntawm kev kho qhov muag.

Mechanical Integrity, Surface Requirements
Vim tias cov yeeb yaj kiab polymer yog qhov muag heev thiab thermally rhiab heev thaum ua, qhov zoo ntawm platen yog qhov tseem ceeb heev.

Feem ntau rhuab platens yog tsim nrog:

Daim iav polished nto

PTFE los yog txo kev sib txhuam coatings

High tolerances rau flatness

Anti- zoo li qub nto tiav

Cov qauv tsim no lav tias:

Tshem tawm khawb ntawm zaj duab xis

Particle embedded yog txo

Kev hloov pauv zaj duab xis yog ruaj khov

kev ua txhaum saum npoo yog tiv thaiv

Ib qho kev ua qias tuaj me me ntawm qhov chaw platen yuav raug xa mus tas li mus rau cov yeeb yaj kiab kho qhov muag thiab ua rau kev ua haujlwm tsis zoo.

Kub tswj thiab rhiab heev rau optical retardation
Qhov optical retardation nyob rau hauv stretched polymer films yog ncaj qha nyob rau ntawm lub molecule orientation uas yog kub heev - nyob ntawm lub sij hawm deformation.

Yog kub =

Tsawg dhau lawm: zaj duab xis tsis ncab zoo thiab ua rau tsis muaj -txoj kev nyuaj siab.

Siab dhau: molecular alignment uncontrolled, optical precision txo

Yog li ntawd, kev tswj xyuas kom sov nruj yog yuav tsum tau ua kom muaj kev sib txuam birefringence raws tag nrho qhov dav ntawm zaj duab xis.

Lub rhuab platen muab qhov yooj yim thermal stability ua ntej zaj duab xis nkag mus rau hauv lub stretching cheeb tsam qhov twg uniaxial deformation ua rau cov polymer chains yuav tsum oriented nyob rau hauv ib txoj kev tswj.

Cov lus ceeb toom ntawm Kev Tswj Xyuas Txheej Txheem
Kev saib xyuas thiab kev tawm tswv yim zoo tshaj plaws muab kev tswj hwm ntawm cov yeeb yaj kiab kub tawm ntawm lub platen.

Multi-Zone PID Control –
Niaj hnub nimno platen systems feem ntau siv:

Ntau cheeb tsam cua sov arrays

Zone ywj siab PID kub loops

Algorithms rau tiag - lub sij hawm thermal tswj

Qhov no guarantees homogeneous tshav kub dispersion kuj nyob rau hauv manufacturing ntawm loj cheeb tsam optical zaj duab xis.

Infrared ntsuas yam tsis muaj kev sib cuag
Ib qho uas tsis yog -hu rau tus pas ntsuas kub infrared lossis thermal imaging system feem ntau yog siv rau:

Daim ntawv qhia zaj duab xis saum npoo kub ntawm qhov tawm ntawm platen

Tshawb xyuas qhov ntsuas kub ntawm qhov nruab nrab ntawm qhov nruab nrab

Validate homogeneity, ces ncab

Cov lus qhia txog kev tswj xyuas

Txoj kev kaw - voj tswj txoj kev muaj txiaj ntsig zoo hauv kev tau txais cov khoom siv hluav taws xob zoo sib xws uas xav tau rau kev tsim cov yeeb yaj kiab kho qhov muag - qib.

Static Control thiab Cleanliness Standards
Cov yeeb yaj kiab kho qhov muag yog qhov nkag siab zoo rau qhov chaw paug yog li ua kom lub platen huv si yog qhov tseem ceeb.

Kev khiav hauj lwm ib puag ncig feem ntau yog khaws cia kom lav:

Tsawg particle ntom

Kev tiv thaiv tus nqi static

Cleanroom- huab cua zoo

Yam tsawg kawg nkaus hauv huab cua

Cov paug tawm zoo li qub lossis cov khoom siv plua plav tuaj yeem nkag mus rau hauv cov khoom siv softened polymer kom tsim kho qhov muag tsis pom kev, uas tsis tuaj yeem tshem tawm tom qab ncab.

Kev koom ua ke ntawm cov txheej txheem Stretching
Tom qab ntawd nws dhau los ntawm qhov kub platen seem mus rau qhov chaw tswj kev ncab.

Ntawm no hauv seem no:

Uniaxial nro yog yuam

Polymer chains orient nyob rau hauv cov kev taw qhia ntawm stretch

Taw qhia rau birefringence

Lub optical retardation yog muab los ntawm

Qhov tseeb ntawm theem no yog ze ze rau lub homogeneity ntawm thermal conditioning muab los ntawm platen system.

Ib qho kev sib txawv ntawm qhov sib txawv ntawm cov dej ntws mus tas li yog khaws cia rau hauv cov qauv kho qhov muag ntawm cov yeeb yaj kiab.

Cov Khoom Siv Hluav Taws Xob Siv rau Optical Retarders
Feem ntau cov polymers siv nyob rau hauv rhuab platen stretching cov txheej txheem yog:

Polycarbonate (PC)

Cyclo{0}}olefin polymers (COP)

Polyimide hom (rau kub retarders)

Cov ntaub ntawv sib txawv muaj qhov sib txawv ntawm cov iav hloov pauv kub thiab xav tau ntau yam platen kub profiles rau qhov zoo tshaj plaws molecular alignment.

Cov ntsiab lus
Cov phaj kub yog qhov pom tsis pom, zoo kawg nkaus tswj thermal theem ntawm qhov yooj yim polymer zaj duab xis tau hloov mus rau hauv cov khoom siv kho qhov muag. Cov txheej txheem kho qhov muag ntawm cov rhuab platen polymer zaj duab xis ncab yog cuam tshuam los ntawm qhov kub thiab txias, qhov zoo ntawm qhov chaw thiab kev ruaj ntseg, uas yog cov ntsiab lus tseem ceeb rau qhov kawg ntawm kev kho qhov muag ntawm cov khoom.

Cov cua sov tswj tau hloov cov yeeb yaj kiab zoo li qub rau hauv cov txheej txheem kho qhov muag uas muaj peev xwm los tswj cov theem ntawm lub teeb nrog kev ua haujlwm siab.

Thaum kawg, cov khoom siv kho qhov muag pom tau zoo tshaj plaws yog qhov tshwm sim ntawm kev ua tib zoo sib npaug ntawm kev tswj xyuas qhov kub thiab txias, txawm tias cov neeg kho tshuab ncab, thiab huv heev, tiaj tus thermal nto, qhov chaw thermal engineering ncaj qha tswj tus cwj pwm ntawm lub teeb nws tus kheej.