# US 2026/0064221 A1 · Display device and a sensing system including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0064221 A1 - Document ID: US20260064221A1 - Status: Published application - Kind: A1 - Application number: 19/386,414 - Filed: 2025-11-12 - Published: 2026-03-05 - Earliest claimed: 2021-08-10 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Sang Hyun LIM - Web page: https://patentgrep.com/patent/US20260064221A1 ## CPC - 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 3/0443: {using a single layer of sensing electrodes} - G06F 3/03547: {Touch pads, in which fingers can move on a surface} - 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 3/041662: {using alternate mutual and self-capacitive scanning} - G06F 3/0441: {using active external devices, e.g. active pens, for receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G06F 3/046: by electromagnetic means - H10K 59/40: OLEDs integrated with touch screens - G06F 3/03545: {Pens or stylus} - G06F 2203/04104: Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger - G06F 2203/04106: Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection - 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 A display device including: a display unit having a plurality of pixels; a plurality of touch electrodes disposed on the display unit; a touch line connected to a first end of each of the plurality of touch electrodes; a common voltage line spaced apart from the plurality of touch electrodes; and a plurality of switching elements connected between the common voltage line and a second end of each of the plurality of touch electrodes. ## Claims ### Claim 1 A display device, comprising: a first touch electrode extending in a first direction in an active area; a first touch pad, a common voltage pad and a first transistor in a non-active area around the active area; a first touch line directly connecting the first touch pad to the first touch electrode; and a common voltage line directly connecting the first touch pad to a first electrode of the first transistor, wherein a second electrode of the first transistor is directly connected to the first touch electrode. ### Claim 2 (depends on 1) The display device of claim 1, further comprising: a second touch electrode extending in a second direction crossing the first direction in the active area; a second touch pad and a second transistor in the non-active area; and a second touch line directly connecting the second touch pad to the second touch electrode. ### Claim 3 (depends on 2) The display device of claim 2, wherein the common voltage line directly connects the second touch pad to a first electrode of the second transistor. ### Claim 4 (depends on 3) The display device of claim 3, wherein a second electrode of the second transistor is directly connected to the second touch electrode. ### Claim 5 (depends on 2) The display device of claim 2, wherein the first touch electrode is a sensing touch electrode and the second touch electrode is a driving touch electrode. ### Claim 6 (depends on 2) The display device of claim 2, wherein the second touch electrode has a first end and a second end opposing the first end in the second direction, wherein the first end of the second touch electrode is connected to the common voltage line with the second switching element therebetween, and wherein the second end of the second touch electrode is connected to the second touch line with no switching element therebetween. ### Claim 7 (depends on 1) The display device of claim 1, wherein the first transistor is disposed on a first side of the active area and the second transistor is disposed on a second side of the active area, adjacent to the first side of the active area. ### Claim 8 (depends on 1) The display device of claim 1, further comprising a gate line disposed in non-active area, wherein a gate of the first transiter and a gate of the second transistor are connected the gate line. ### Claim 9 (depends on 2) The display device of claim 2, further comprising a touch driver configured to sense an input of a user's body by driving the first touch electrode and the second touch electrode during a first period, and to sense an input of an input device by driving the first touch electrode and the second touch electrode during a second period different from the first period. ### Claim 10 (depends on 9) The display device of claim 9, further comprising a display driver configured to display an image by driving a plurality of pixels during a display period, wherein the display period overlaps the first and second periods. ### Claim 11 (depends on 1) The display device of claim 1, wherein the display device further comprises: a substrate; a thin film transistor layer disposed on the substrate and comprising a plurality of thin film transistors, the first transistor and the second transistor; and a light emitting element layer disposed on the thin film transistor layer and comprising a plurality of light emitting elements. ### Claim 12 (depends on 11) The display device of claim 11, wherein the display device further comprises: a substrate; a thin film transistor layer disposed on the substrate and comprising a plurality of thin film transistors, the first transistor and the second transistor; and a light emitting element layer disposed on the thin film transistor layer and comprising a plurality of light emitting elements. ### Claim 13 An electronic device comprising a display device, the display device comprising: a first touch electrode extending in a first direction in an active area; a first touch pad, a common voltage pad and a first transistor in a non-active area around the active area; and a first touch line directly connecting the first touch pad to the first touch electrode, a common voltage line directly connecting the first touch pad to a first electrode of the first transistor, wherein a second electrode of the first transistor is directly connected to the first touch electrode. ### Claim 14 (depends on 13) The electronic device of claim 13, further comprising: a second touch electrode extending in a second direction crossing the first direction in the active area; a second touch pad and a second transistor in the non-active area; and a second touch line directly connecting the second touch pad to the second touch electrode. ### Claim 15 (depends on 14) The electronic device of claim 14, wherein the common voltage line directly connects the second touch pad to a first electrode of the second transistor. ### Claim 16 (depends on 15) The electronic device of claim 15, wherein a second electrode of the second transistor is directly connected to the second touch electrode. ### Claim 17 (depends on 15) The electronic device of claim 15, wherein the first touch electrode is a sensing touch electrode and the second touch electrode is a driving touch electrode. ### Claim 18 (depends on 15) The electronic device of claim 15, wherein the second touch electrode has a first end and a second end opposing the first end in the second direction, wherein the first end of the second touch electrode is connected to the common voltage line with the second switching element therebetween, and wherein the second end of the second touch electrode is connected to the second touch line with no switching element therebetween. ### Claim 19 (depends on 13) The electronic device of claim 13, wherein the first transistor is disposed on a first side of the active area and the second transistor is disposed on a second side of the active area, adjacent to the first side of the active area. ### Claim 20 (depends on 13) The electronic device of claim 13, wherein electronic device is at least one of a mobile phone, a smartphone, a tablet computer, a mobile communication terminal, an electronic organizer, an electronic book, a portable multimedia player (PMP), a navigation system, an ultra-mobile PC (UMPC), a television, a laptop/notebook computer, a computer monitor, a digital billboard, an Internet-of-Things (IoT) device, a smart watch, a watch phone, a glasses type display, a head mounted display (HMD), a dashboard of a vehicle, a center fascia of a vehicle, a center information display (CID) disposed on a dashboard of a vehicle, a room mirror display in place of side mirrors of a vehicle, a display disposed on a rear surface of a front seat for rear seat entertainment of a vehicle.