# US 11,907,459 B2 · Touch detection device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,907,459 B2 - Document ID: US11907459B2 - Status: Granted - Kind: B2 - Application number: 18/104,384 - Filed: 2023-02-01 - Published: 2023-06-08 - Granted: 2024-02-20 - Earliest claimed: 2015-10-28 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Koji Noguchi - Web page: https://patentgrep.com/patent/US11907459B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/041661: {using detection at multiple resolutions, e.g. coarse and fine scanning; using detection within a limited area, e.g. object tracking window} - G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G02F 1/13338: {Input devices, e.g. touch panels} - G02F 1/134372: {for fringe field switching [FFS] where the common electrode is not patterned} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS ## Abstract According to an aspect, a touch detection device includes: drive electrodes, a drive signal being input to each of the drive electrodes; and a first drive electrode included in the drive electrodes and divided into subdivided electrodes. An arrangement pitch of the subdivided electrodes is finer than an arrangement pitch of the drive electrodes, the drive electrodes are configured to perform a touch detection in a first sensing period and in a second sensing period, and the subdivided electrodes are driven collectively in the first sensing period and driven individually in the second sensing period. ## Claims ### Claim 1 A touch detection device comprising: drive electrodes, a drive signal being input to each of the drive electrodes; and a first drive electrode included in the drive electrodes and divided into subdivided electrodes, wherein an arrangement pitch of the subdivided electrodes is finer than an arrangement pitch of the drive electrodes, the drive electrodes are configured to perform a touch detection in a first sensing period and in a second sensing period, and the subdivided electrodes are driven collectively in the first sensing period and driven individually in the second sensing period. ### Claim 2 (depends on 1) The touch detection device according to claim 1, wherein the subdivided electrodes are driven sequentially in the second sensing period. ### Claim 3 (depends on 1) The touch detection device according to claim 1, wherein a first frame period includes a display output period in which an image is displayed and the first sensing period, a second frame period includes the display output period and the second sensing period, the second frame period immediately following the first frame period, and the first frame period and the second frame period are alternately provided on a frame-period-by-frame-period basis. ### Claim 4 (depends on 1) The touch detection device according to claim 1, wherein all of the drive electrodes are driven in the first sensing period. ### Claim 5 (depends on 1) The touch detection device according to claim 1, wherein the drive electrodes include second drive electrodes other than the first drive electrode, each of the second drive electrodes does not have subdivided electrodes, and the second drive electrodes are not driven in the second sensing period. ### Claim 6 (depends on 1) The touch detection device according to claim 1, wherein a resolution of the touch detection in the second sensing period is higher than a resolution of the touch detection in the first sensing period. ### Claim 7 (depends on 1) The touch detection device according to claim 1, wherein the touch detection is performed in a first area in the first sensing period and in a second area in the second sensing period, and the first area is larger than the second area. ### Claim 8 (depends on 7) The touch detection device according to claim 7, wherein the second area is located in the first area. ### Claim 9 (depends on 7) The touch detection device according to claim 7, wherein the subdivided electrodes are located in the second area, and the other drive electrodes are located in the first area. ### Claim 10 (depends on 7) The touch detection device according to claim 7, wherein a resolution of the touch detection in the second sensing period is higher than a resolution of the touch detection in the first sensing period. ### Claim 11 (depends on 1) The touch detection device according to claim 1, wherein a length of the first sensing period is different from a length of the second sensing period. ### Claim 12 (depends on 11) The touch detection device according to claim 11, wherein the second sensing period is longer than the first sensing period. ### Claim 13 (depends on 1) The touch detection device according to claim 1, further comprising touch detection electrodes overlapping the drive electrodes, wherein the touch detection electrodes include first touch detection electrodes and second touch detection electrodes, and a width of each of the first touch detection electrodes is narrower than a width of each of the second touch detection electrodes. ### Claim 14 (depends on 13) The touch detection device according to claim 13, wherein the first touch detection electrodes overlap the subdivided electrodes, and are driven individually in the second sensing period. ### Claim 15 (depends on 13) The touch detection device according to claim 13, wherein the first touch detection electrodes perform touch detection in the second sensing period and do not perform touch detection in the first sensing period. ### Claim 16 (depends on 13) The touch detection device according to claim 13, wherein an arrangement pitch of the first touch detection electrodes is finer than an arrangement pitch of the second touch detection electrodes. ### Claim 17 A touch detection device comprising: drive electrodes, a drive signal being input to each of the drive electrodes; and a first drive electrode included in the drive electrodes and divided into subdivided electrodes, wherein the subdivided electrodes are configured to perform a touch detection in a first sensing period and in a second sensing period, and to be driven collectively in the first sensing period and driven individually in the second sensing period. ### Claim 18 (depends on 17) The touch detection device according to claim 17, wherein a first frame period includes a display output period in which an image is displayed and the first sensing period, a second frame period includes the display output period and the second sensing period, the second frame period immediately following the first frame period, and the first frame period and the second frame period are alternately provided on a frame-period-by-frame-period basis. ### Claim 19 (depends on 17) The touch detection device according to claim 17, wherein the drive electrodes include second drive electrodes other than the first drive electrode, each of the second drive electrodes does not have subdivided electrodes, all of the drive electrodes are driven in the first sensing period, and the second drive electrodes are not driven in the second sensing period. ### Claim 20 (depends on 17) The touch detection device according to claim 17, further comprising touch detection electrodes overlapping the drive electrodes, wherein the touch detection electrodes include first touch detection electrodes and second touch detection electrodes, and a width of each of the first touch detection electrodes is narrower than a width of each of the second touch detection electrodes.