Capacitive screens .Ɛsɛ sɛ wuhu multi-touch denam electrode ahorow a ɛma mutual capacitance no kɔ soro no so. Sɛ yɛbɛka no tiawa a, wɔakyekyɛ screen no mu ayɛ no blocks na wɔde capacitive modules ahorow bi asi hɔ wɔ beae biara. wɔn nyinaa yɛ adwuma wɔ ahofadi mu, enti .Capacitive screen .betumi ayɛ touch tebea a ɛwɔ beae biara no yɛ detected independectly, na akyi processing, multi-touch no yɛ ara kwa.
Nocapacitive mfiridwuma ho nsɛm a wɔde ka ho .(CTP) de mprempren induction a ɛwɔ onipa nipadua mu no yɛ adwuma. NoCapacitive screen .yɛ anan-layer composite glass screen. Wɔde ITO (Nano indium tin dade oxide) a ɛwɔ mu no mu biara akata so ne ahwehwɛ a ɛwɔ ahwehwɛ no mu no mu biara. Outermost layer yɛ silica glass a ɛbɔ ho ban a ne kɛseɛ yɛ 0.0015mm pɛ, na ɛyɛ interlayer ITO coating. Bere a adwumayɛ ani no, wɔtwe electrode anan fi ntwea anan no so, na ITO a ɛwɔ mu no yɛ screen layer a ɛhwɛ ma wɔyɛ adwuma no.
Bere a ɔdefo no de ne nsa ka no .Capacitive screen ., esiane anyinam ahoɔden a ɛwɔ onipa nipadua mu nti, nea ɔde di dwuma no nsateaa ne nea ɛyɛ adwuma no yɛ coupling capacitor. Esiane sɛ wɔde adwumayɛ ani no bata-frequency signal a ɛkorɔn ho nti, nsateaa no twetwe current ketewaa bi, a ɛsen fi screen no ntwea anan so. Nsu a ɛsen fa electrode anan no mu no ne kwan a efi nsateaa ano kɔ ntwea anan no so no hyia wɔ nsusuwii mu. Controller no bu current ratios anan no gyinabea pɛpɛɛpɛ. Ɛtumi du 99% pɛpɛɛpɛ na ɛwɔ mmuaeɛ ahoɔhare a ɛnnu 3ms.
Touch technology a ɛwɔ projected capacitive panel no mu ne sɛ ɛbɛ etch ITO conductive circuit modules ahorow wɔ ITO conductive glass coating no ntoatoaso abien so. Nsusuiɛ a wɔakyerɛw wɔ module mmienu no so no gyina hɔ ma wɔn ho wɔn ho, na wɔbɛtumi abu no sɛ nnua a ɛtwetwe kɔ so sesa wɔ x ne y akwan so. Esiane sɛ X ne Y nhyehyɛe no wɔ soro ahorow nti, capacitor node bi yɛ wɔ nhyiam no ase. Wobetumi de slider biako adi dwuma sɛ drive line, na biako nso ayɛ detection line. Sɛ current no fa waya bi mu wɔ drive line no mu a, sɛ signal of capacitance nsakrae fi abɔnten a, ɛbɛma nsakrae aba capacitance node no mu wɔ waya foforo so. Wobetumi de electronic circuit a ɛka ho no asusuw nsakrae a ɛba wɔ capacitance bo a wɔahu no mu, na afei wɔadan no ayɛ no dijitaal sɛnkyerɛnne denam A/D controller no so ama kɔmputa no ayɛ akontaabu ho nhyehyɛe de anya (X, Y) axis gyinabea, na afei wɔadu atirimpɔw a ɛne sɛ wɔde besi gyinabea no ho.
Wɔ dwumadie mu no, controller no de current no kɔ drive line no so nnidisoɔ nnidisoɔ, sɛdeɛ ɛbɛyɛ a anyinam ahoɔden pɔtee bi bɛba node biara ne waya no ntam. Afei scan sensing line column by column no na fa susuw capacitance nsakrae a ɛwɔ ne electrodes ntam no, na ɛnam so nya multi-point positioning. Sɛ nsateaa anaa touch medium bɛn a, controller no hu nsakrae a ɛba wɔ capacitance mu no ntɛm ara wɔ touch node no ne waya no ntam, na afei ɛsi touch position no so dua. AC nsɛnkyerɛnne ahorow bi na ɛma axis a ɛte saa no kɔ so, na mmuae a ɛwɔ .Touch Screen .no yɛ nea electrode ahorow a ɛwɔ agyan afoforo so no te nka. Wɔn a wɔde di dwuma no frɛ eyi 'cross-Over' induction, anaasɛ projection induction. Sensor no yɛ x, y axis ito patterns a wɔde adura ho. Sɛ nsateaa bi ka touch screen no ani a, capacitance bo a ɛwɔ touch point no ase no kɔ soro sɛnea touch point no kwan te. Scanning a ɛkɔ so wɔ sensor no so no hu nsakrae a ɛba wɔ capacitance bo mu. Control chip no bu touch point no ho akontaa na ɛbɔ ho amanneɛ kyerɛ processor no.
