# US 2014/0192008 A1 · Touch acquisition in a projected capacitive touch screen system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192008 A1 - Document ID: US20140192008A1 - Status: Published application - Kind: A1 - Application number: 13/736,164 - Filed: 2013-01-08 - Published: 2014-07-10 - Earliest claimed: 2013-01-08 - Assignees: STMicroelectronics (Rousset) SAS; STMicroelectronics S.r.l. - Applicants: Stmicroelectronics K.K.; Stmicroelectronics (Rousset) SAS - Inventors: Maxime Teissier; Cyril Troise - Web page: https://patentgrep.com/patent/US20140192008A1 ## CPC - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G06F 3/04166: {Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184)} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A capacitive touch panel includes first electrodes extending in first direction and second electrodes extending in a second (intersecting) direction. The first electrodes include parallel extending transmit first electrodes and receive first electrodes that are interleaved with each other. The second electrodes include parallel extending transmit second electrodes and receive second electrodes that are interleaved with each other. Transmit circuitry is coupled to the transmit first electrodes and transmit second electrodes. Receive circuitry coupled to the receive first electrodes and receive second electrodes. Processing circuitry controls activation of the transmit and receive circuitry in a manner which supports the making of adjacent line capacitance measurements and intersecting line capacitance measurements. The capacitance measurements are processed to identify and determine location of touches made on or near the capacitive touch panel. ## Claims ### Claim 1 Apparatus, comprising: a capacitive touch panel including a plurality of first electrodes extending in first direction and a plurality of second electrodes extending in a second direction, the first and second electrodes intersecting each other; wherein the plurality of first electrodes includes transmit first electrodes and receive first electrodes, the transmit first electrodes and receive first electrodes being interleaved; wherein the plurality of second electrodes includes transmit second electrodes and receive second electrodes, the transmit second electrodes and receive second electrodes being interleaved; transmit circuitry coupled to the transmit first electrodes and transmit second electrodes; and receive circuitry coupled to the receive first electrodes and receive second electrodes. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the transmit first electrodes are divided into a first sub-group of transmit first electrodes and a second sub-group of transmit first electrodes. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein the transmit circuitry comprises a first transmitter having an output coupled to each of the first electrodes in the first sub-group of transmit first electrodes. ### Claim 4 (depends on 3) The apparatus of claim 3, wherein the receive circuitry comprises a plurality of receivers each having an input coupled to a corresponding one of the receive first electrodes. ### Claim 5 (depends on 4) The apparatus of claim 4, further comprising a processing circuit configured to: activate the first transmitter, activate the plurality of receivers, and sense adjacent line capacitance between first electrodes of the first sub-group of transmit first electrodes and adjacent ones of the receive first electrodes. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein the processing circuit is further configured to process the sensed adjacent line capacitance to determine a coordinate of a touch made to or near the capacitive touch panel. ### Claim 7 (depends on 4) The apparatus of claim 4, wherein the transmit circuitry comprises a second transmitter having an output coupled to each of the first electrodes in the second sub-group of transmit first electrodes. ### Claim 8 (depends on 7) The apparatus of claim 7, further comprising a processing circuit configured to: activate the first transmitter, activate the plurality of receivers, sense adjacent line capacitance between first electrodes of the first sub-group of transmit first electrodes and adjacent ones of the receive first electrodes, activate the second transmitter, activate the plurality of receivers, and sense adjacent line capacitance between first electrodes of the second sub-group of transmit first electrodes and adjacent ones of the receive first electrodes. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the processing circuit is further configured to process the sensed adjacent line capacitance to determine a coordinate of a touch made to or near the capacitive touch panel. ### Claim 10 (depends on 4) The apparatus of claim 4, wherein the transmit circuitry comprises a plurality of second transmitters each having an output coupled to a corresponding one of first electrodes in the second sub-group of transmit first electrodes. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the receive circuitry comprises an additional plurality of receivers each having an input coupled to a corresponding one of the receive second electrodes; further comprising a processing circuit configured to: activate the second transmitters, activate the plurality of additional receivers, and sense intersecting line capacitance between first electrodes of the second sub-group of transmit first electrodes and intersecting ones of the receive second electrodes. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the processing circuit is further configured to process the sensed intersecting line capacitance to determine a coordinate of a touch made to or near the capacitive touch panel. ### Claim 13 A method, comprising: controlling operation of a capacitive touch panel including a plurality of first electrodes extending in first direction and a plurality of second electrodes extending in a second direction, the first and second electrodes intersecting each other; wherein the plurality of first electrodes includes transmit first electrodes and receive first electrodes, the transmit first electrodes and receive first electrodes being interleaved; wherein the plurality of second electrodes includes transmit second electrodes and receive second electrodes, the transmit second electrodes and receive second electrodes being interleaved; wherein controlling comprises: activating transmit circuitry coupled to the transmit first electrodes and transmit second electrodes; and activating receive circuitry coupled to the receive first electrodes and receive second electrodes. ### Claim 14 (depends on 13) The method of claim 13, wherein the transmit first electrodes are divided into a first sub-group of transmit first electrodes and a second sub-group of transmit first electrodes, and wherein activating transmit circuitry comprises activating a first transmitter having an output coupled to each of the first electrodes in the first sub-group of transmit first electrodes. ### Claim 15 (depends on 14) The method of claim 14, wherein the receive circuitry comprises a plurality of receivers each having an input coupled to a corresponding one of the receive first electrodes; and wherein activating receive circuitry comprises activating the plurality of receivers, the method further comprising: sensing adjacent line capacitance between first electrodes of the first sub-group of transmit first electrodes and adjacent ones of the receive first electrodes. ### Claim 16 (depends on 15) The method of claim 15, further comprising processing the sensed adjacent line capacitance to determine a coordinate of a touch made to or near the capacitive touch panel. ### Claim 17 (depends on 14) The method of claim 14, wherein activating transmit circuitry comprises activating a second transmitter having an output coupled to each of the first electrodes in the second sub-group of transmit first electrodes. ### Claim 18 (depends on 17) The method of claim 17, wherein the receive circuitry comprises a plurality of receivers each having an input coupled to a corresponding one of the receive first electrodes; and wherein activating receive circuitry comprises activating the plurality of receivers, the method further comprising: sensing adjacent line capacitance between first electrodes of the second sub-group of transmit first electrodes and adjacent ones of the receive first electrodes. ### Claim 19 (depends on 18) The method of claim 18, further comprising processing the sensed adjacent line capacitance to determine a coordinate of a touch made to or near the capacitive touch panel. ### Claim 20 (depends on 14) The method of claim 14, wherein activating transmit circuitry comprises activating a plurality of second transmitters each having an output coupled to a corresponding one of first electrodes in the second sub-group of transmit first electrodes. ### Claim 21 (depends on 20) The method of claim 20, wherein the receive circuitry comprises a plurality of receivers each having an input coupled to a corresponding one of the receive second electrodes; and wherein activating receive circuitry comprises activating the plurality of receivers, the method further comprising: sensing intersecting line capacitance between first electrodes of the second sub-group of transmit first electrodes and intersecting ones of the receive second electrodes. ### Claim 22 (depends on 21) The method of claim 21, further comprising processing the sensed intersecting line capacitance to determine a coordinate of a touch made to or near the capacitive touch panel.