# US 2025/0093995 A1 · Touch Display Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0093995 A1 - Document ID: US20250093995A1 - Status: Published application - Kind: A1 - Application number: 18/952,957 - Filed: 2024-11-19 - Published: 2025-03-20 - Earliest claimed: 2021-10-18 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: JaeGyun Lee; JiHyun Jung; DeukSu Lee; SuChang An; Ruda Rhe; Hyangmyoung Gwon - Web page: https://patentgrep.com/patent/US20250093995A1 ## 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 3/04166: {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 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - G06F 3/0448: {Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality} - G06F 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds - 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 - H10K 59/40: OLEDs integrated with touch screens - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract The disclosure is related to a touch display device including a display panel. By dividing an active area of the display panel into a plurality of sub-areas, and driving a touch electrode disposed on each of the plurality of sub-areas separately, a load of the touch electrodes is reduced depending on a size of the display panel and a performance of a touch sensing can be improved. ## Claims ### Claim 1 A touch display device comprising: an active area including a plurality of sub-areas divided by a first boundary along a first direction of the active area and a second boundary along a second direction of the active area that crosses the first direction, the plurality of sub-areas including a first sub-area and a second sub-area that are separated from each other by the first boundary; a first plurality of touch electrodes in the first sub-area; a second plurality of touch electrodes in the second sub-area, the second plurality of touch electrodes separated from the first plurality of touch electrodes; a first plurality of touch routing lines connected to the first plurality of touch electrodes, the first plurality of touch routing lines extending from the first sub-area to the second sub-area such that the first plurality of touch routing lines cross the first boundary; and a second plurality of routing lines connected to the second plurality of touch electrodes, wherein at least one of the first plurality of touch electrodes or the second plurality of touch electrodes overlaps at least a portion of a contact hole for an electrical connection between a corresponding one of a plurality of light-emitting elements and a corresponding thin film transistor. ### Claim 2 (depends on 1) The touch display device of claim 1, further comprising: an encapsulation layer on the plurality of light-emitting elements. ### Claim 3 (depends on 2) The touch display device of claim 2, wherein the encapsulation layer includes a plurality of layers including at least one inorganic layer and at least one organic layer. ### Claim 4 (depends on 2) The touch display device of claim 2, wherein the plurality of touch electrodes are on the encapsulation layer. ### Claim 5 (depends on 4) The touch display device of claim 4, further comprising: a touch buffer layer on the encapsulation layer; and a touch insulating layer on the touch buffer layer, wherein the touch buffer layer and the touch insulating layer are between the encapsulation layer and at least one of the plurality of touch electrodes. ### Claim 6 (depends on 5) The touch display device of claim 5, further comprising: a touch insulating buffer layer between the touch insulating layer and the touch buffer layer. ### Claim 7 (depends on 1) The touch display device of claim 1, wherein the first plurality of touch electrodes includes: a plurality of X-touch electrodes extending in the first direction; a plurality of Y-touch electrodes extending in the second direction; and a touch electrode connecting pattern connecting adjacent X-touch electrodes or connecting adjacent Y-touch electrodes, and wherein the touch electrode connecting pattern is on a different layer from the first plurality of touch electrodes. ### Claim 8 (depends on 7) The touch display device of claim 7, wherein the plurality of sub-areas further include: a third sub-area separated from the first sub-area by the second boundary, the third sub-area including a third plurality of touch electrodes; and a fourth sub-area separated from the second sub-area by the second boundary, the fourth sub-area including a fourth plurality of touch electrodes. ### Claim 9 (depends on 1) The touch display device of claim 1, wherein at least one routing line from the first plurality of routing lines is between a pair of touch electrodes from the second plurality of touch electrodes in the second sub-area. ### Claim 10 (depends on 1) The touch display device of claim 1, further comprising: at least one dummy electrode between a pair of touch electrodes from the first plurality of touch electrodes in the first sub-area, the at least one dummy electrode aligned with the at least one routing line in the second sub-area. ### Claim 11 (depends on 1) The touch display device of claim 1, further comprising: at least one shield line that surrounds at least a portion of an outermost touch routing line from the plurality of touch routing lines. ### Claim 12 (depends on 11) The touch display device of claim 11, wherein the at least one shield line is grounded or is supplied a signal different from a signal supplied through the plurality of touch routing lines. ### Claim 13 (depends on 11) The touch display device of claim 11, further comprising: at least one guard line between the plurality of touch routing lines and the at least one shield line, the at least one guard line supplied a signal corresponding to a signal applied to a touch routing line from the plurality of touch routing lines that is closest to the at least one guard line.