C hi chi hnih a awm a .Apaciitive touch screens 1000 a awm bawk.:Surface capacitive touch screen te pawh a awm bawk.lehA projected capacitive touch screens ..
Surface capacitive touch screen a awm bawk.
A chung lam chi .Capacitive touch screen a awm bawk.tih hi hman tlanglawn tak a ni. A hnathawh dan chu a awlsam a, a man pawh a tlawm a, a design circuit pawh a awlsam a, mahse multi-touch hriat a harsa hle.
A projected capacitive touch screen a ni.
ChumiA projected capacitive touch screen a ni.Multi-finger touch function a nei. PahnihinCapacitive touch screen a awm bawk.Light transmittance sang tak, response speed chak tak, leh dam rei theihna thatna te nei rawh. A chhiatna chu: temperature leh humidity inthlak danglam zel chuan capacitance value a danglam ang a, chu chuan hnathawh a nghet lo ang a, drift pawh a ti fo ang. Screen i check fo a ngai a, touch positioning atan gloves pangngai i ha lo bawk.
projected capacitive screens te pawh a awm bawk.A chi hnih ah then theih a ni a, chungte chu self{{0}capacitance screen leh mutual-capacitance screen te an ni. Mutual-capacitance screen hman tlanglawn zawk hi entirnan kan hmang thei ang. A chhung lam chu driving electrode leh receiving electrode hmanga siam a ni. Driving electrode te hian low-voltage leh high-frequency signal an pe chhuak a, receiving electrode-ah an project a, electric current nghet tak an siam a, mihring taksain a khawih chuanCapacitive screen a ni a ., a chhan chu mihring taksa chu grounded a nih avangin, kut zungtang leh a .Capacitive screen a ni a .Equivalent capacitance siam la, leh high-frequency signals chu he equivalent capacitance hmang hian leiah a luang lut thei a, chutiang chuan receiving end-a charge dawn zat chu kut zungtang chu transmitting terminal hnaih zawka a awm chuan electric charge a tlahniam tih a chiang zawk a ni. A tawpah chuan touch point chu receiving terminal-in current intensity a dawn dan a zirin a ruat a ni.
Horizontal leh vertical electrode array te hi glass chung lama ITO a siam a ni. Heng horizontal leh vertical electrode te hian lei nen capacitance an siam a. He capacitance hi self-capacitance tia sawi a ni tlangpui a, chu chu electrode chu leia capacitance a ni. Finger hian capacitive screen a khawih chuan kut zungtang capacitance chu screen capacitance-ah superimposed a ni ang a, chu chuan screen capacitance a tipung ang.
Touch detection-ah chuan self-capacitance screen hian horizontal leh vertical electrode array te chu a hmu ve ve a, touch hma leh a hnua capacitance inthlak dan azirin horizontal leh vertical coordinate te chu a tichiang a, chutah chuan planar touch coordinate-ah a dah khawm a ni. Self-capacitance scanning method hi x-axis leh y-axis directions-a touch screen-a touch points project-na nen a inang a, chutah chuan x-axis leh y-axis direction-a coordinate te chu a hnuaia mi ang hian chhut a ni a, a tawpah chuan touch point-a coordinate-ah a dah khawm a ni.
Single-point touch a nih chuan x-axis leh y-axis directions-a projection te chu a danglam bik a, combined coordinate te pawh a danglam bik bawk. Touch screen-ah touch pahnih a awm a, point pahnih chu X direction inang emaw Y direction-ah emaw a awm loh chuan X leh Y direction-ah projection pahnih a awm a, coordinate 4 chu a inzawm khawm a ni. A chiang e, coordinate pahnih chauh hi a tak tak a ni a, a dang pahnih chu "ghost points" tia hriat lar an ni. Chuvangin, self-capacitive screen hian multi-touch dik tak a thleng thei lo.
Mutual capacitance screen hian ITO hmangin glass chung lamah horizontal leh vertical electrode a siam bawk. Amah leh self-capacitance screen danglamna chu electrode set hnih inzawmna hmunah capacitance a lo piang ang a, chu chu heng electrode set pahnih hian capacitance pole pahnih an siam ang. Kut zungtang a khawih chuan .Capacitive screen a ni a ., chu chuan touch point bula electrode pahnih inzawmna a nghawng a, chu chuan electrode pahnih inkara capacitance a thlak danglam a ni. Mutual capacitance kan hriat chuan horizontal electrode te chuan excitation signal chu a inthlak a, vertical electrode zawng zawng chuan a rualin signal an dawng vek a ni. Chutiang chuan, horizontal leh vertical electrode zawng zawng inzawmna (intersection) capacitance value chu a hmu thei a, chu chu touch screen pum puia -dimensional plane pahnih capacitance a ni. Touch screen-a -dimensional capacitance change data pahnih sawi dan chuan touch point tinte coordinate chu chhut theih a ni. Chuvangin, screen-ah hian touch point tam tak awm mah se, touch point tinte coordinate dik tak chu chhut theih a ni.
Mutual capacitance screen thatna chu wiring a tlem zawk a, chu chuan contact tam tak inkar danglamna chu a rualin a hriat theih a, a thliar hrang thei bawk. Self-capacitance screen hian contact tam tak a hre thei bawk a, mahse signal ngei pawh a blur avangin a danglam thei lo. Chu bakah, mutual capacitance screen-a sensing scheme hian speed chak leh power consumption hniam zawkna a nei a, a chhan chu drive line-a node zawng zawng chu a rualin a teh vek thei a, chuvangin acquisition cycle awm zat chu 50%-in a tihtlem thei bawk. He pahnih-electrode structure hian self-external noise shielding function a nei a, power level engemaw chen a signal stability a ti tha thei bawk.
Eng pawh ni se, touch position chu X electrode leh Y electrode inkara signal inthlak danglamna distribution tehna hmangin an chhut a, chutah chuan mathematical algorithms hmangin heng signal level danglam te hi an process a, touch point-a XY coordinate te chu an teh a ni.
