# US 12,216,855 B2 · 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 12,216,855 B2 - Document ID: US12216855B2 - Status: Granted - Kind: B2 - Application number: 18/083,605 - Filed: 2022-12-19 - Published: 2023-07-06 - Granted: 2025-02-04 - Earliest claimed: 2021-12-30 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: SeungRok Shin; Sangkyu Kim; Yoonnara Jang; Jeonghoon Lee; DeukSu Lee - Web page: https://patentgrep.com/patent/US12216855B2 ## CPC - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - 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 3/0448: {Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality} - G06F 3/0412: {Digitisers structurally integrated in a display} - 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 - 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 The present disclosure is directed to a touch display device that is capable of reducing a load of a touch sensor structure disposed in a display panel and improving the accuracy of touch sensing capabilities of the touch display device. In one aspect, touch electrode lines disposed on an active area are disposed to be separated into a plurality of sub-areas. A number of touch routing lines connected to the touch electrode lines are disposed on the active area, thus a touch sensor structure with a reduced load can be provided while minimizing an increase of a non-active area due to an arrangement of the touch routing lines. ## Claims ### Claim 1 A touch display device, comprising: a plurality of light-emitting elements disposed on an active area of a display panel; an encapsulation layer disposed on the plurality of light-emitting elements; a plurality of X-touch electrode lines on the encapsulation layer, comprising two or more X-touch electrodes electrically connected to each other along a first direction, and disposed on each of a plurality of sub-areas included in the active area separately; a plurality of Y-touch electrode lines on the encapsulation layer, comprising two or more Y-touch electrodes electrically connected to each other along a second direction crossing the first direction, and disposed on each of the plurality of sub-areas separately; and a plurality of touch routing lines electrically connected to one of the plurality of X-touch electrode lines and the plurality of Y-touch electrode lines, wherein the plurality of sub-areas include: a plurality of boundary sub-areas having a boundary positioned on a first boundary of a first side of the active area or a second boundary of a second side opposing the first side, and at least one central sub-area positioned between two of the plurality of boundary sub-areas, at least one of the plurality of boundary sub-area including a plurality of X-touch routing lines, wherein a part of at least one of the plurality of X-touch routing lines is electrically connected to one of the plurality of X-touch electrode lines, wherein the plurality of X-touch electrode lines in the at least one central sub-area are connected to two or more of the plurality of X-touch routing lines on both sides of the at least one central sub-area. ### Claim 2 (depends on 1) The touch display device of claim 1, wherein each of the plurality of X-touch electrode lines in the at least one central sub-area comprises a first portion and a second portion separated from each other, and wherein each of the first portion and the second portion is connected to a different one of the plurality of X-touch routing lines. ### Claim 3 (depends on 1) The touch display device of claim 1, wherein a number of the plurality of X-touch electrode lines in the at least one central sub-area is identical to a number of the plurality of X-touch electrode lines in each of the plurality of boundary sub-areas, and wherein a number of the plurality of Y-touch electrode lines in the at least one central sub-area is smaller than a number of the plurality of Y-touch electrode lines in each of the plurality of boundary sub-areas. ### Claim 4 (depends on 1) The touch display device of claim 1, wherein a size of the at least one central sub-area is smaller than a size of each of the plurality of boundary sub-areas. ### Claim 5 (depends on 1) The touch display device of claim 1, further comprising: at least one first dummy electrode disposed between the X-touch routing line electrically connected to the plurality of X-touch electrode lines in the at least one central sub-area; and at least one second dummy electrode disposed between the plurality of X-touch electrode lines in one of the plurality of boundary sub-areas. ### Claim 6 (depends on 5) The touch display device of claim 5, wherein the at least one first dummy electrode and the at least one second dummy electrode are floating. ### Claim 7 (depends on 1) The touch display device of claim 1, further comprising: at least one first dummy electrode is disposed on a portion of the at least one central sub-area corresponding to one of the plurality of X-touch routing lines in the at least one central sub-area, the one of the plurality of X-touch routing lines being electrically connected to one of the plurality of X-touch electrode lines in one of the plurality of boundary sub-areas. ### Claim 8 (depends on 1) The touch display device of claim 1, wherein the at least one central sub-area comprises a first central sub-area and a second central sub-area, and wherein a part of a Y-touch routing line to which each of a plurality of Y-touch electrode lines in the first central sub-area is connected, is disposed in the second central sub-area. ### Claim 9 (depends on 8) The touch display device of claim 8, further comprising: at least one dummy electrode disposed on an area of the first central sub-area corresponding to an area where the Y-touch routing line is disposed. ### Claim 10 (depends on 8) The touch display device of claim 8, wherein the Y-touch routing line in the second boundary sub-area crosses one of the plurality of X-touch routing lines that is electrically connected to one of the plurality of X-touch electrode lines in the at least one central sub-area. ### Claim 11 (depends on 8) The touch display device of claim 8, further comprising: at least one dummy electrode disposed in an area of the first boundary area corresponding to an area where the Y-touch routing line is disposed. ### Claim 12 (depends on 1) The touch display device of claim 1, wherein, on outside of the active area, a width of a first one of the plurality of X-touch routing lines that is electrically connected to at least one of the plurality of X-touch electrode lines in the at least one central sub-area, is greater than a width of a second one of the plurality of X-touch routing lines that is electrically connected to at least one of the plurality of X-touch electrode lines in the plurality of boundary sub-areas. ### Claim 13 (depends on 1) The touch display device of claim 1, wherein a touch driving signal is supplied to the plurality of X-touch electrode lines, and a touch sensing signal is detected from the plurality of Y-touch electrode lines. ### Claim 14 A touch display device, comprising: a plurality of X-touch electrode lines comprising two or more X-touch electrodes electrically connected to each other along a first direction, and disposed on each of a plurality of sub-areas included in an active area separately; a plurality of Y-touch electrode lines comprising two or more Y-touch electrodes electrically connected to each other along a second direction crossing the first direction, and disposed on each of the plurality of sub-areas separately; and a plurality of touch routing lines electrically connected to one of the plurality of X-touch electrode lines and the plurality of Y-touch electrode lines, wherein the plurality of sub-areas comprise: a plurality of boundary sub-areas positioned on a first boundary of a first side of the active area or a second boundary of a second side opposing the first side, and at least one central sub-area positioned between two of the plurality of boundary sub-areas, at least one of the plurality of boundary sub-area including a plurality of X-touch routing lines, wherein a part of at least one of the plurality of X-touch routing lines is in the active area, wherein each of the plurality of X-touch electrode lines in the at least one central sub-area comprises a first portion and a second portion separated from each other, and wherein each of the first portion and the second portion is connected to a different one of the plurality of X-touch routing lines. ### Claim 15 A touch display device, comprising: a plurality of X-touch electrode lines comprising two or more X-touch electrodes electrically connected to each other along a first direction, and disposed on each of a plurality of sub-areas included in an active area separately, the plurality of sub-areas comprising a plurality of boundary sub-areas positioned on a first side of the active area or a second side opposing the first side and at least one central sub-area positioned between two of the plurality of boundary sub-areas; a plurality of Y-touch electrode lines comprising two or more Y-touch electrodes electrically connected to each other along a second direction crossing the first direction, and disposed on each of the plurality of sub-areas separately; a plurality of X-touch routing lines electrically connected to one of the plurality of X-touch electrode lines; and a plurality of Y-touch routing lines electrically connected to one of the plurality of Y-touch electrode lines, wherein at least one or more of the plurality of X-touch routing lines is disposed on a first boundary sub-area of the plurality of boundary sub-areas and is electrically connected to at least one of the plurality of X-touch electrode lines disposed on a first central sub-area of the at least one central sub-area, at least one or more of the plurality of Y-touch routing lines is disposed on the first boundary sub-area of the plurality of boundary sub-areas and is electrically connected to at least one of the plurality of the Y-touch electrode line disposed on a second boundary sub-area of the plurality of boundary sub-areas, and the one or more of the plurality of X-touch routing lines in the first boundary sub-area crosses the one or more of the plurality of Y-touch routing lines in the first boundary sub-area, wherein a part of a Y-touch routing line to which each of a plurality of Y-touch electrode lines in the first central sub-area is connected is disposed in a second central sub-area adjacent to the first central sub-area. ### Claim 16 (depends on 15) The touch display device of claim 15, further comprising: at least one dummy electrode disposed on at least one of: (1) a portion of the first central sub-area that corresponds to a portion where the one or more of the plurality of X-touch routing lines are disposed in the first boundary sub-area, and (2) a portion of the second boundary sub-area that corresponds to a portion where the one or more of the plurality of Y-touch routing lines are disposed in the first boundary sub-area. ### Claim 17 (depends on 16) The touch display device of claim 16, wherein at least one of the plurality of X-touch routing lines or the plurality of Y-touch routing lines in the first central sub-area or the second boundary sub-area crosses the portion in which the at least one dummy electrode is disposed, and is electrically connected to a touch electrode line in a sub-area other than a sub-area on which the at least one dummy electrode is disposed. ### Claim 18 (depends on 15) The touch display device of claim 15, wherein the plurality of X-touch electrode lines and the plurality of Y-touch electrode lines are disposed on a same layer. ### Claim 19 (depends on 15) The touch display device of claim 15, wherein the plurality of X-touch electrode lines and the plurality of X-touch routing lines are disposed on a same layer.