Kev sib nrig sib capacitance hom kuj tseem hu ua transcapacitance hom, uas tsim cov capacitance los ntawm kev sib txuas ntawm cov electrodes uas nyob ib sab. Thaum tus ntiv tes hnov mob mus txog ntawm txoj kab hluav taws xob los ntawm ib qho hluav taws xob mus rau lwm qhov, qhov kev hloov ntawm kev sib nrig sib capacitance tau hnov, yog li kuaj pom txoj hauj lwm. Kev sib nrig sib capacitance hom txhawb ntau cov ntsiab lus tseeb, muaj lub teeb xa hluav taws xob ntau dua, thiab tuaj yeem txhim kho kev daws teeb meem thiab muaj peev xwm tiv thaiv hluav taws xob cuam tshuam. Lub hauv paus ntsiab lus ntawm kev sib nrig sib capacitance hom yog tias feem ntau cov khoom siv hluav taws xob yuav tsim nqi thaum lawv nyob ze heev. Lub sijhawm no, yog tias lwm yam khoom siv hluav taws xob, xws li tus ntiv tes, nyob ze rau thawj ob yam khoom siv hluav taws xob, vim tias tib neeg lub cev nqus tau qee qhov nqi, qhov chaw them nqi (capacitance) ntawm ob yam khoom siv hluav taws xob yuav hloov. Lub npe hu ua kev sib nrig sib capacitance yog hais txog lub capacitance tsim ntawm kev sib tshuam ntawm kab rov tav thiab ntsug ITO electrodes ntawm iav nto. Txoj kev scanning ntawm kev sib nrig sib capacitance yog luam theej duab lub capacitance hloov ntawm txhua qhov kev sib tshuam los txiav txim qhov chaw ntawm qhov kov. Thaum kov, nws yuav cuam tshuam rau kev sib txuas ntawm cov electrodes uas nyob ib sab, yog li hloov lub capacitance ntawm kev sib tshuam.
Kev sib nrig sib capacitance scanning txoj kev tuaj yeem txheeb xyuas tus nqi capacitance ntawm txhua qhov kev sib tshuam thiab kev hloov pauv tom qab kov, yog li lub sijhawm luam theej nws xav tau ntev dua piv nrog tus kheej-capacitance scanning txoj kev. Yuav tsum tau luam theej duab thiab ntes F cov ntaub ntawv. Nws tuaj yeem ntes tau ntau kov.
Muaj feem xyuam rau tus kheej lub peev xwm yog qhov kev lees paub, kev taug qab thiab kev sib cuam tshuam ntawm kev taw qhia (Gestureinteraction), uas yog, kuaj pom thiab paub qhov txawv ntawm kev coj tus cwj pwm, xws li zooming, dragging, rotating, thiab lwm yam. Txoj kev realization yog Axisintersect technology. Nws yog los npaj lub pob zeb diamond puab nrhiav tsev nyob rau hauv cov txheej txheem conductive, thiab ib txheej conductive yog xav tau rau txhua axis. Siv daim ntawv ob-axis ua piv txwv. Thaum kuaj pom tus cwj pwm kov, tus tswj xyuas kev kuaj xyuas cov kab rov tav axis thiab ntsug axis feem. Cov ntsiab lus kab rov tav thiab ntsug uas tsim cov capacitive coupling yuav muaj crests nce, thiab qhov kev sib tshuam ntawm ob axes yog qhov kov.
Qhov tseeb, axis-interleaved capacitive touch screen technology yog cov thev naus laus zis siv rau ntawm lub vaj huam sib luag ntawm lub khoos phis tawj. Lub koos pij tawj kov vaj huam sib luag siv X thiab Y axis sensing electrode arrays los tsim ib daim phiaj. Thaum tus ntiv tes nyob ze ntawm lub touchpad, ib qho me me ntawm cov nqi yuav raug tsim tawm ntawm tus ntiv tes thiab qhov ntsuas hluav taws xob. Lub sijhawm no, txoj haujlwm ntawm cov khoom tuaj yeem txiav txim siab los ntawm kev suav. Tau kawg, qhov sib txawv loj tshaj ntawm lub touchpad thiab lub vijtsam kov yog qhov qub yog opaque thiab tom kawg yog pob tshab.
Txawm li cas los xij, nws yuav tsum tau taw qhia tias txawm hais tias lub axis interleaving tuaj yeem paub txog kev ua haujlwm ntawm ntau qhov taw qhia kev paub, nws tseem nyuaj rau nrhiav txoj haujlwm kom raug ntawm ntau qhov kov. Vim tias thaum luam theej duab hauv ob lub axes, ob lub ntsiab lus kov yuav tsim ob lub nthwv dej ntawm X axis thiab F axis feem. Thaum lawv ntsib, 4 kov cov ntsiab lus yuav raug tsim. Ob ntawm lawv yog cov ntsiab lus tsis tseeb kov. Ua kom lub kaw lus tsis tuaj yeem txhais lus raug. Kev daws teeb meem yog kom nce cov axis kom nce txoj haujlwm thiab naj npawb ntawm cov neeg hu tau pom. Rau txhua qhov ntxiv axis, ib qho ntxiv tuaj yeem txheeb xyuas tau (piv txwv li, 2 cov ntsiab lus tuaj yeem txheeb xyuas tau 3 axes, thiab 3 cov ntsiab lus tuaj yeem txheeb xyuas rau 4 axes). Txawm li cas los xij, txhua qhov axis ntxiv yuav tsum muaj cov txheej txheem txuas ntxiv, uas yuav ua rau kom cov tuab, qhov hnyav thiab tus nqi ntawm lub vijtsam kov tsim, uas tsis tas yuav tsum tau kov cov ntxaij vab tshaus uas nws daim ntawv thov tseem ceeb yog cov khoom lag luam xws li xov tooj ntawm tes.
