# US 10,871,840 B2 · Touch sensor and touch display device 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 10,871,840 B2 - Document ID: US10871840B2 - Status: Granted - Kind: B2 - Application number: 16/018,596 - Filed: 2018-06-26 - Published: 2019-06-06 - Granted: 2020-12-22 - Earliest claimed: 2017-12-06 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Seung Ho Baek - Web page: https://patentgrep.com/patent/US10871840B2 ## 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 3/044: by capacitive means - G06F 3/0443: {using a single layer of sensing 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 3/0416: {Control or interface arrangements specially adapted for digitisers} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A touch sensor includes first touch electrodes respectively coupled to first touch lines, the first touch electrodes being arranged on a first column, second touch electrodes respectively coupled to second touch lines, the second touch electrodes being arranged on a second column that is adjacent to the first column in a row direction, a first multiplexer to which the first touch lines are coupled, and a second multiplexer to which the second touch lines are coupled, wherein the first touch electrodes have respective areas that become smaller as they become closer to the first multiplexer along a first direction, wherein the second touch electrodes have respective areas that become smaller as they become closer to the second multiplexer along a second direction, and wherein the first direction and the second direction are opposite to each other. ## Claims ### Claim 1 A touch sensor comprising: first touch electrodes respectively coupled to first touch lines, the first touch electrodes being arranged on a first column; second touch electrodes respectively coupled to second touch lines, the second touch electrodes being arranged on a second column that is adjacent to the first column in a row direction; a first multiplexer to which the first touch lines are coupled; and a second multiplexer to which the second touch lines are coupled, wherein the first touch electrodes have respective areas that become smaller as they become closer to the first multiplexer along a first direction, wherein the second touch electrodes have respective areas that become smaller as they become closer to the second multiplexer along a second direction, wherein the first direction and the second direction are opposite to each other, wherein each of the first touch electrodes and the second touch electrodes has either a rectangular shape having a first side and a second side parallel to the first side, or a rhombus shape having a first vertex and a second vertex, wherein the first touch electrodes are aligned such that either their first sides or their first vertices are located on a first straight line extending in a column direction, and such that either their second sides or their second vertices are differently offset from the first straight line, wherein the second touch electrodes are aligned such that either their first sides or their first vertices are located on a second straight line extending in the column direction, and such that either their second sides or their second vertices are differently offset from the second straight line, wherein the first and second touch lines are between the first straight line and the second straight line, and wherein the second sides or the second vertices of the first touch electrodes and the second sides or the second vertices of the second touch electrodes are in between the first straight line and the second straight line. ### Claim 2 (depends on 1) The touch sensor of claim 1, wherein a first touch electrode having a smallest area among the first touch electrodes is located on a same row as a second touch electrode having a largest area among the second touch electrodes, and wherein a second touch electrode having a smallest area among the second touch electrodes is located on a same row as a first touch electrode having a largest area among the first touch electrodes. ### Claim 3 (depends on 2) The touch sensor of claim 2, wherein a number of touch lines between the first and second touch electrodes on each of respective rows is the same for all of the rows, and wherein the touch lines comprise at least some of the first touch lines and the second touch lines. ### Claim 4 (depends on 3) The touch sensor of claim 3, wherein the sum of areas of first and second touch electrodes on each of respective rows are the same for all of the rows. ### Claim 5 (depends on 1) The touch sensor of claim 1, wherein a number of touch lines between the first and second touch electrodes on each of respective rows are the same for all of the rows, and wherein the touch lines comprise at least some of the first touch lines and the second touch lines. ### Claim 6 (depends on 1) The touch sensor of claim 1, wherein each of the first touch lines has a shape that extends obliquely from one vertex of a corresponding first touch electrode to be bent in the first direction, and wherein each of the second touch lines has a shape that extends obliquely from one vertex of a corresponding second touch electrode to be bent in the second direction. ### Claim 7 A touch display device comprising: a touch sensor; and a display panel combined with the touch sensor, wherein the touch sensor comprises: first touch electrodes respectively coupled to first touch lines, the first touch electrodes being arranged on a first column; second touch electrodes respectively coupled to second touch lines, the second touch electrodes being arranged on a second column that is adjacent to the first column in a row direction; a first multiplexer to which the first touch lines are coupled; and a second multiplexer to which the second touch lines are coupled, wherein the first touch electrodes have respective areas that become increasingly smaller as they approach the first multiplexer along a first direction, and the second touch electrodes have respective areas that become increasingly smaller as they approach the second multiplexer along a second direction, wherein the first direction and the second direction are opposite to each other, wherein each of the first touch electrodes and the second touch electrodes has a rectangular shape having a first side and a second side parallel to the first side, or a rhombus shape having a first vertex and a second vertex, wherein the first touch electrodes are aligned such that their first sides or their first vertices are located on a first straight line extending in a column direction, and such that their second sides or their second vertices are differently offset from the first straight line, wherein the second touch electrodes are aligned such that their first sides or their first vertices are located on a second straight line extending in the column direction, and such that their either their second sides or second vertices are differently offset from the second straight line, wherein the first and second touch lines are between the first straight line and the second straight line, wherein the second sides or the second vertices of the first touch electrodes and the second sides or the second vertices of the second touch electrodes are in between the first straight line and the second straight line, and wherein the display panel comprises: a pixel area comprising pixels on a bottom of the first touch electrodes and the second touch electrodes; a pad area comprising pad electrodes; a first path selection area in which the first multiplexer is located; and a second path selection area in which the second multiplexer is located. ### Claim 8 (depends on 7) The touch display device of claim 7, wherein the touch sensor further comprises: third touch electrodes respectively coupled to third touch lines, the third touch electrodes being arranged on a third column that is adjacent to the second column in the row direction; fourth touch electrodes respectively coupled to fourth touch lines, the fourth touch electrodes being arranged on a fourth column that is adjacent to the third column in the row direction; a third multiplexer coupled to the third touch lines, the third multiplexer being located in the first path selection area; and a fourth multiplexer coupled to the fourth touch lines, the fourth multiplexer being located in the second path selection area. ### Claim 9 (depends on 8) The touch display device of claim 8, further comprising: a first multiplexer line coupling the first multiplexer to some of the pad electrodes; a second multiplexer line coupling the second multiplexer to some of the pad electrodes; a third multiplexer line coupling the third multiplexer to some of the pad electrodes; and a fourth multiplexer line coupling the fourth multiplexer to some of the pad electrodes. ### Claim 10 (depends on 9) The touch display device of claim 9, wherein the first multiplexer line and the second multiplexer line extend adjacent to one side of the pixel area, and wherein the third multiplexer line and the fourth multiplexer line extend adjacent to another side of the pixel area. ### Claim 11 (depends on 9) The touch display device of claim 9, wherein the first multiplexer line, the second multiplexer line, the third multiplexer line, and the fourth multiplexer line extend adjacent to one side of the pixel area. ### Claim 12 A touch sensor comprising: first touch electrodes respectively coupled to first touch lines, the first touch electrodes being respectively arranged on a first column and a second column that is adjacent to the first column in a row direction; second touch electrodes respectively coupled to second touch lines, the second touch electrodes being respectively arranged on the first column and the second column; a first multiplexer coupled to the first touch lines coupled to the first touch electrodes arranged on the first column; a second multiplexer coupled to the first touch lines coupled to the first touch electrodes arranged on the second column; a third multiplexer coupled to the second touch lines coupled to the second touch electrodes arranged on the first column; and a fourth multiplexer coupled to the second touch lines coupled to the second touch electrodes arranged on the second column, wherein the first touch electrodes have respective areas that become increasingly smaller as they approach the first multiplexer or the second multiplexer along a first direction, wherein the second touch electrodes have respective areas that become increasingly smaller as they approach the third multiplexer or the fourth multiplexer along a second direction, wherein the first direction and the second direction are opposite to each other, wherein each of the first touch electrodes and the second touch electrodes has a rectangular shape having a first side and a second side parallel to the first side, wherein the first touch electrodes on the first column and the second touch electrodes on the first column are aligned such that their first sides are located on a first straight line extending in a column direction, and such that their second sides are differently offset from the first straight line, wherein the first touch electrodes on the second column and the second touch electrodes on the second column are aligned such that their first sides are located on a second straight line extending in the column direction, and such that their second sides are differently offset from the second straight line, wherein the first and second touch lines are between the first straight line and the second straight line, and wherein the second sides of the first touch electrodes and the second sides of the second touch electrodes are in between the first straight line and the second straight line. ### Claim 13 (depends on 12) The touch sensor of claim 12, wherein a number of first touch lines coupled to the first multiplexer, a number of first touch lines coupled to the second multiplexer, a number of second touch lines coupled to the third multiplexer, and a number of second touch line coupled to the fourth multiplexer are the same. ### Claim 14 (depends on 12) The touch sensor of claim 12, wherein a number of first touch electrodes arranged on the second column is greater than that of first touch electrodes arranged on the first column, and wherein a number of second touch electrodes arranged on the first column is greater than that of second touch electrodes arranged on the second column.