# US 10,503,298 B2 · Touch sensor integrated type display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,503,298 B2 - Document ID: US10503298B2 - Status: Granted - Kind: B2 - Application number: 15/793,620 - Filed: 2017-10-25 - Published: 2018-05-03 - Granted: 2019-12-10 - Earliest claimed: 2016-10-28 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Jaegyun Lee - Web page: https://patentgrep.com/patent/US10503298B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F 3/04184: {Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally} - 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} - G06F 3/047: using sets of wires, e.g. crossed wires - G06F 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds - 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) ## Abstract Disclosed herein is a touch sensor integrated type display device including gate lines; data lines; and pixel electrodes to which data signals are supplied through the data lines; touch/common electrodes; touch/common routing wirings connected to the touch/common electrodes to supply a common voltage and a touch driving signal; and dummy routing wires not connected to the touch/common electrodes. The common voltage is supplied to the touch/common routing wires and the dummy routing wires during a display operation period, and the touch driving signal is supplied to the touch/common routing wires and a load free driving signal is supplied to the dummy routing wires during a touch operation period. ## Claims ### Claim 1 A touch sensor integrated type display device comprising: a plurality of gate lines; a plurality of data lines crossing over the plurality of gate lines; a plurality of pixel electrodes to which data signals are supplied through the plurality of data lines; a plurality of touch/common electrodes; a plurality of touch/common routing wires connected to the plurality of touch/common electrodes to supply a common voltage and a touch driving signal based on a time division method of time-dividing one frame period into a display operation period and a touch operation period; and a plurality of dummy routing wires transversing the plurality of touch/common electrodes in an active area of the display device and arranged in the same direction with the plurality of touch/common routing wires, the plurality of dummy routing wires not connected to the plurality of touch/common electrodes in the active area, wherein the common voltage is supplied to the plurality of touch/common routing wires during the display operation period, wherein the touch driving signal is supplied to the plurality of touch/common routing wires during the touch operation period and a load free driving signal is supplied to the plurality of dummy routing wires during the touch operation period, and wherein the load free driving signal either is the same as the touch driving signal, or has the same phase and amplitude as the touch driving signal. ### Claim 2 (depends on 1) The touch sensor integrated type display device of claim 1, wherein the common voltage is supplied to the plurality of dummy routing wires during the display operation period. ### Claim 3 (depends on 1) The touch sensor integrated type display device of claim 1, further comprising: a modulation signal wire connected to the plurality of dummy routing wires; a source and touch driving integrated circuit configured to supply the common voltage to the plurality of touch/common electrodes; and a modulation signal supplier configured to supply the common voltage and the load free driving signal to the modulation signal wire, and to supply the common voltage to the source and touch driving integrated circuit. ### Claim 4 (depends on 1) The touch sensor integrated type display device of claim 1, further comprising: a source and touch driving integrated circuit configured to supply the common voltage and the touch driving signal to the plurality of touch/common routing wires, and to supply the common voltage and the load free driving signal to the plurality of dummy routing wires; and a modulation signal supplier configured to supply the common voltage, the touch driving signal and the load free driving signal to the source and touch driving integrated circuit. ### Claim 5 (depends on 4) The touch sensor integrated type display device of claim 4, further comprising: a dummy connection wire connecting the plurality of dummy routing wires, wherein the source and touch driving integrated circuit is further configured to supply the common voltage and the load free driving signal to the dummy connection wire. ### Claim 6 (depends on 1) The touch sensor integrated type display device of claim 1, wherein the plurality of dummy routing wires include a first group of dummy routing wires and a second group of dummy routing wires which are respectively disposed at one side or both sides of the plurality of touch/common routing wires. ### Claim 7 (depends on 1) The touch sensor integrated type display device of claim 1, wherein the plurality of dummy routing wires overlap with the plurality of data lines. ### Claim 8 (depends on 1) The touch sensor integrated type display device of claim 1, wherein the plurality of touch/common electrodes are arranged serially in the active area of the display device, and the plurality of dummy routing wires transverse the serially arranged plurality of touch/common electrodes. ### Claim 9 (depends on 3) The touch sensor integrated type display device of claim 3, further comprising: a ground wire disposed adjacent to the plurality of touch/common routing wires and connected to the modulation signal supplier; and electrostatic discharge circuits disposed between the ground wire and the plurality of data lines, each of the electrostatic discharge circuits having one end connected to the ground wire and another end connected to each of the plurality of data lines. ### Claim 10 (depends on 4) The touch sensor integrated type display device of claim 4, further comprising: a ground wire disposed adjacent to the plurality of touch/common routing wires and connected to the modulation signal supplier; and electrostatic discharge circuits disposed between the ground wire and the plurality of data lines, each of the electrostatic discharge circuits having one end connected to the ground wire and another end connected to each of the plurality of data lines. ### Claim 11 (depends on 5) The touch sensor integrated type display device of claim 5, further comprising: a ground wire disposed adjacent to the plurality of touch/common routing wires and connected to the modulation signal supplier; and electrostatic discharge circuits disposed between the ground wire and the plurality of data lines, each of the electrostatic discharge circuits having one end connected to the ground wire and another end connected to each of the plurality of data lines. ### Claim 12 A touch sensor integrated type display panel comprising: a plurality of gate lines and a plurality of data lines defining a plurality of pixel regions; a plurality of touch/common electrodes overlapping the plurality of pixel regions; a plurality of touch/common routing wires connected to the plurality of touch/common electrodes; and a plurality of dummy routing wires transversing the plurality of touch/common electrodes in an active area of the display panel and arranged in the same direction with the plurality of touch/common routing wires, wherein a common voltage is supplied to the plurality of touch/common routing wires during a display operation period of one frame period, wherein a touch driving signal is supplied to the plurality of touch/common routing wires and a load free driving signal is supplied to the plurality of dummy routing wires during a touch operation period of the one frame period, and wherein the load free driving signal either is the same as the touch driving signal, or has the same phase and amplitude as the touch driving signal. ### Claim 13 (depends on 12) The touch sensor integrated type display panel of claim 12, wherein the plurality of dummy routing wires are not connected to the plurality of touch/common electrodes in the active area of the display panel. ### Claim 14 (depends on 12) A touch sensor integrated type display device comprising the touch sensor integrated type display panel of claim 12. ### Claim 15 (depends on 14) The touch sensor integrated type display device of claim 14, further comprising: a modulation signal wire connected to the plurality of dummy routing wires; a source and touch driving integrated circuit configured to supply the common voltage to the plurality of touch/common electrodes; and a modulation signal supplier configured to supply the common voltage and the load free driving signal to the modulation signal wire, and to supply the common voltage to the source and touch driving integrated circuit. ### Claim 16 (depends on 14) The touch sensor integrated type display device of claim 14, further comprising: a source and touch driving integrated circuit configured to supply the common voltage and the touch driving signal to the plurality of touch/common routing wires, and to supply the common voltage and the load free driving signal to the dummy routing wires; and a modulation signal supplier configured to supply the common voltage, the touch driving signal and the load free driving signal to the source and touch driving integrated circuit. ### Claim 17 (depends on 15) The touch sensor integrated type display device of claim 15, further comprising: a dummy connection wire connecting the plurality of dummy routing wires, wherein the source and touch driving integrated circuit is further configured to supply the common voltage and the load free driving signal to the dummy connection wire. ### Claim 18 (depends on 14) The touch sensor integrated type display device of claim 14, wherein the plurality of dummy routing wires include a first group of dummy routing wires and a second group of dummy routing wires which are respectively disposed at one side or both sides of the plurality of touch/common routing wires. ### Claim 19 (depends on 15) The touch sensor integrated type display device of claim 15, further comprising: a ground wire disposed adjacent to the plurality of touch/common routing wires and connected to the modulation signal supplier; and electrostatic discharge circuits disposed between the ground wire and the plurality of data lines, each of the electrostatic discharge circuits having one end connected to the ground wire and another end connected to each of the plurality of data lines. ### Claim 20 (depends on 14) The touch sensor integrated type display device of claim 14, wherein the touch operation period occurs after the display operation period in the one frame period.