# US 12,001,626 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 12,001,626 B2 - Document ID: US12001626B2 - Status: Granted - Kind: B2 - Application number: 18/111,957 - Filed: 2023-02-21 - Published: 2023-06-29 - Granted: 2024-06-04 - Earliest claimed: 2019-07-30 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Sul-Ki Kim; Gue-Tai Lee; Jin-Yeol Kim - Web page: https://patentgrep.com/patent/US12001626B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - H10K 59/40: OLEDs integrated with touch screens - H10K 59/88: Dummy elements, i.e. elements having non-functional features - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - 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 - H10K 71/861: {Repairing} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A touch display device has an inspection process and a repair process that may be easily performed. The touch display device includes first and second touch electrodes spaced apart from each other and a dummy conductive layer spaced apart from at least one of the first touch electrodes and the second touch electrodes, and is characterized in that the shape of at least one of the first touch electrodes and the second touch electrodes arranged in first boundary areas is different from the shape of at least one of the first touch electrodes, the second touch electrodes and the dummy conductive layer arranged in second boundary areas, thereby rapidly detecting the position of a defect and improving efficiency of inspection and repair processes. ## Claims ### Claim 1 A touch display device, comprising: a plurality of light emitting elements arranged on a substrate; an encapsulation layer arranged on the light emitting elements; a plurality of first touch electrodes arranged on the encapsulation layer; and a plurality of second touch electrodes arranged on the encapsulation layer and spaced apart from and adjacent to the first touch electrodes in a first boundary area, wherein the first touch electrodes include a plurality of first protrusions arranged in the first boundary area, and a first protrusion and another first protrusion nearest the first protrusion among the first protrusions extend parallel with each other in a first direction in the first boundary area, wherein the second touch electrodes include a plurality of second protrusions arranged in the first boundary area, and a second protrusion among the second protrusions extends in the first direction, and wherein an internal angle of each of the first protrusion, the other first protrusion, and the second protrusion arranged in the first boundary area is an acute angle. ### Claim 2 (depends on 1) The touch display device of claim 1, wherein: the first protrusion and the second protrusion are aligned with each other in the first boundary area and have a same length. ### Claim 3 (depends on 1) The touch display device of claim 1, wherein: each of the first protrusion, the other first protrusion, and the second protrusion in the first boundary area has an oblique tip. ### Claim 4 (depends on 1) The touch display device of claim 1, further comprising: a first bridge configured to connect the first touch electrodes; and a second bridge configured to connect the second touch electrodes and arranged on a different plane from the first bridges. ### Claim 5 (depends on 1) The touch display device of claim 1, further comprising: a touch buffer film disposed between the encapsulation layer and the first touch electrodes. ### Claim 6 (depends on 1) The touch display device of claim 1, wherein: the first touch electrodes and the second touch electrodes are formed as a mesh having openings, and at least a portion of the light emitting elements is disposed in the openings. ### Claim 7 (depends on 1) The touch display device of claim 1, wherein: the first touch electrodes or the second touch electrodes are formed as a mesh having openings and include a part in which a portion of the mesh is cut. ### Claim 8 (depends on 1) The touch display device of claim 1, wherein: the first protrusion and the other first protrusion have a same length in the first direction, and respective tips of the first protrusion and the other first protrusion are aligned with each other in a second direction perpendicular to the first direction. ### Claim 9 (depends on 1) The touch display device of claim 1, wherein: the first boundary area is between one of the first touch electrodes and one of the second touch electrodes adjacent to the one of the first touch electrodes, the second touch electrodes are spaced apart from and adjacent to the first touch electrodes in a second boundary area separate from the first boundary area, and the first touch electrodes include a third protrusion in the second boundary area, the third protrusion having a differently shaped tip from the first protrusion in the first boundary area. ### Claim 10 (depends on 9) The touch display device of claim 9, wherein an internal angle of the tip of the third protrusion is a right angle. ### Claim 11 (depends on 1) The touch display device of claim 1, wherein the first protrusion and the second protrusion have different lengths. ### Claim 12 A touch display device, comprising: a plurality of light emitting elements arranged on a substrate; an encapsulation layer arranged on the light emitting elements; a plurality of first touch electrodes arranged on the encapsulation layer; and a plurality of second touch electrodes arranged on the encapsulation layer and spaced apart from and adjacent to the first touch electrodes in a first boundary area, the first boundary area being between one of the first touch electrodes and one of the second touch electrodes adjacent to the one of the first touch electrodes, wherein the first touch electrodes include a plurality of first protrusions arranged in the the boundary area, wherein the second touch electrodes include a plurality of second protrusions arranged in the first boundary area, and wherein a first protrusion among the first protrusions and a second protrusion nearest the first protrusion among the second protrusions in the first boundary area are aligned with each other and have different lengths from each other in the first boundary area. ### Claim 13 (depends on 12) The touch display device of claim 12, wherein: the first protrusion and the second protrusion face each other in the first boundary area, and a length of the first protrusion is longer than a length of the second protrusion. ### Claim 14 (depends on 13) The touch display device of claim 13, wherein: another first protrusion among the first protrusions and another second protrusion among the second protrusions face each other and are aligned with each other in the first boundary area, and a length of the other first protrusion is shorter than a length of the other second protrusion. ### Claim 15 (depends on 12) The touch display device according to claim 12, wherein: the first protrusion and the second protrusion face each other in the first boundary area, another first protrusion among the first protrusions and another second protrusion among the second protrusions face each other and are aligned with each other in the first boundary area, and a first distance between the first protrusion and the second protrusion is different from a second distance between the other first protrusion and the other second protrusion. ### Claim 16 (depends on 12) The touch display device of claim 12, wherein: the first protrusion and another first protrusion nearest the first protrusion among the first protrusions extend parallel with each other in the first direction. ### Claim 17 (depends on 16) The touch display device of claim 16, wherein: the first protrusion and the other first protrusion have a same length in the first direction, and respective tips of the first protrusion and the other first protrusion are aligned with each other in a second direction perpendicular to the first direction. ### Claim 18 (depends on 16) The touch display device of claim 16, wherein the first protrusion and the other first protrusion have different lengths in the first direction. ### Claim 19 (depends on 12) The touch display device of claim 12, wherein: the second touch electrodes are spaced apart from and adjacent to the first touch electrodes in a second boundary area separate from the first boundary area, and the first touch electrodes include a third protrusion extending in the first direction in the second boundary area, the third protrusion having a different length from the first protrusion in the first boundary area in the first direction. ### Claim 20 (depends on 19) The touch display device of claim 19, wherein: the second touch electrodes include a fourth protrusion extending in the first direction and aligned with the third protrusion in the second boundary area, and the third protrusion and the fourth protrusion have a same length in the first direction.