# US 11,307,709 B2 · Touch driving circuit and touch display device for reducing noise of touch sensing signal according to display driving > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,307,709 B2 - Document ID: US11307709B2 - Status: Granted - Kind: B2 - Application number: 16/944,708 - Filed: 2020-07-31 - Published: 2021-04-29 - Granted: 2022-04-19 - Earliest claimed: 2019-10-28 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: DaeUk Jeong - Web page: https://patentgrep.com/patent/US11307709B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - 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 3/041662: {using alternate mutual and self-capacitive scanning} - G06F 3/0418: {for error correction or compensation, e.g. based on parallax, calibration or alignment} - G06F 3/0443: {using a single layer of sensing electrodes} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/40: OLEDs integrated with touch screens - G06F 2203/04111: Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate - G06F 2203/04112: Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract The present disclosure of the disclosure are related to a touch driving circuit and a touch display device, in a touch sensor structure performing a touch sensing based on a mutual-capacitance, as performing a touch sensing based on a self-capacitance and a touch sensing based on the mutual-capacitance, a performance of a touch sensing may be improved. Furthermore, as driving channels of X-touch electrode line of Y-touch electrode line partially in a period performing a touch sensing based on the self-capacitance, the number of channels driven in each period is reduced and a noise according to a display driving may be reduced when performing a touch sensing based on the self-capacitance. ## Claims ### Claim 1 A touch display device comprising: a panel on which a plurality of gate lines, a plurality of data lines and a plurality of subpixels are disposed; a plurality of emitting devices disposed at the plurality of subpixels; an encapsulation disposed on each emitting device; a plurality of touch electrode lines disposed on the encapsulation and including at least one touch electrode; and a touch driving circuit configured to drive the touch electrode lines, wherein the plurality of touch electrode lines comprises: a plurality of X-touch electrode lines disposed in a first direction; and a plurality of Y-touch electrode lines disposed in a second direction which is different from the first direction, wherein the touch driving circuit is configured to: output a touch driving signal to X-touch electrode lines of a first group of the plurality of X-touch electrode lines during a first period of a first touch sensing mode, output the touch driving signal to X-touch electrode lines of a second group of the plurality of X-touch electrode lines during a second period of the first touch sensing mode, and output the touch driving signal to at least one Y-touch electrode line of the plurality of Y-touch electrode lines during a third period of the first touch sensing mode. ### Claim 2 (depends on 1) The touch display device of claim 1, wherein the number of X-touch electrode lines is greater than the number of Y-touch electrode lines. ### Claim 3 (depends on 1) The touch display device of claim 1, wherein the X-touch electrode lines of the first group is a portion of X-touch electrode lines of the plurality of X-touch electrode lines, and the X-touch electrode lines of the second group is a remaining portion of X-touch electrode lines except for the X-touch electrode lines of the first group of the plurality of X-touch electrode lines. ### Claim 4 (depends on 3) The touch display device of claim 3, wherein the number of the X-touch electrode lines of the first group is equal to the number of the X-touch electrode lines of the second group. ### Claim 5 (depends on 1) The touch display device of claim 1, wherein the touch driving signal is supplied to all of the Y-touch electrode lines of the plurality of Y-touch electrode lines in the third period of the first touch sensing mode. ### Claim 6 (depends on 1) The touch display device of claim 1, wherein the touch driving signal is supplied to a portion of Y-touch electrode lines of the plurality of Y-touch electrode lines in the third period of the first touch sensing mode, and the touch driving signal is supplied to a remaining portion of Y-touch electrode lines of the plurality of Y-touch electrode lines in a fourth period of the first touch sensing mode. ### Claim 7 (depends on 1) The touch display device of claim 1, wherein the third period is between the first period and the second period. ### Claim 8 (depends on 1) The touch display device of claim 1, wherein the third period is before the first period and the second period, or is after the first period and the second period. ### Claim 9 (depends on 1) The touch display device of claim 1, wherein, in a second touch sensing mode after the first touch sensing mode, the touch driving signal is supplied to the X-touch electrode lines and a constant voltage is supplied to the Y-touch electrode lines, or the touch driving signal is supplied to the Y-touch electrode lines and a constant voltage is supplied to the X-touch electrode lines. ### Claim 10 (depends on 9) The touch display device of claim 9, wherein the first touch sensing mode is a self-capacitance sensing mode, and the second touch sensing mode is a mutual-capacitance sensing mode. ### Claim 11 (depends on 1) The touch display device of claim 1, wherein at least one data line of the plurality of data lines receives a data voltage during at least a partial period of the first touch sensing mode. ### Claim 12 (depends on 1) The touch display device of claim 1, wherein the touch electrode included in the touch electrode line is a mesh type having at least one opening, and at least a part of the touch electrode overlaps with the plurality of data lines.