# US 12,761,752 B2 · Display device with different signal phase to different transmission electrodes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,761,752 B2 - Document ID: US12761752B2 - Status: Granted - Kind: B2 - Application number: 18/825,670 - Filed: 2024-09-05 - Published: 2025-03-27 - Granted: 2026-10-13 - Earliest claimed: 2023-09-21 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Bo-Hwan Lee; Sanghun Park; Byeongkyu Jeon - Web page: https://patentgrep.com/patent/US12761752B2 ## CPC - 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 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0416: {Control or interface arrangements specially adapted for digitisers} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - 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 A display device includes a display layer, and a sensor layer having a sensing region and a second sensing region. The sensor layer includes a plurality of first transmission electrodes and a plurality of second transmission electrodes, a first transmission signal having a first waveform and a second transmission signal having a second waveform are provided to the plurality of first transmission electrodes, a third transmission signal having the second waveform and a fourth transmission signal having the first waveform are provided to the plurality of second transmission electrodes, and the first to fourth transmission signals are provided concurrently. ## Claims ### Claim 1 A display device comprising: a display layer; and a sensor layer on the display layer and having a sensing region including a first sensing region and a second sensing region adjacent to the first sensing region, wherein the sensor layer comprises: a plurality of first transmission electrodes, each extending in a first direction, spaced apart in a second direction crossing the first direction, and located in the first sensing region; and a plurality of second transmission electrodes, each extending in the first direction, spaced apart in the second direction, and located in the second sensing region, a first one of the plurality of first transmission electrodes is configured to receive a first transmission signal having a first waveform in a first sensing frame and having a second waveform that is inverse in phase to the first waveform in a second sensing frame continuous with the first sensing frame, a second one of the first transmission electrodes adjacent to the first one of the plurality of first transmission electrodes is configured to receive a second transmission signal having the second waveform that is inverse in phase to the first waveform in the first sensing frame and having the first waveform in the second sensing frame, a third one of the first transmission electrodes adjacent to the second one of the plurality of first transmission electrodes is configured to receive a third transmission signal having the second waveform in the first sensing frame and having the second waveform in the second sensing frame, a fourth one of the first transmission electrodes adjacent to the third one of the plurality of first transmission electrodes is configured to receive a fourth transmission signal having the second waveform in the first sensing frame and having the second waveform in the second sensing frame, one of the plurality of second transmission electrodes is configured to receive a fifth transmission signal having the second waveform in the first sensing frame and having the first waveform in the second sensing frame, another one adjacent to the one of the plurality of second transmission electrodes is configured to receive a sixth transmission signal having the first waveform in the first sensing frame and having the second waveform in the second sensing frame, and the first to sixth transmission signals are provided concurrently. ### Claim 2 (depends on 1) The display device of claim 1, wherein the second sensing region is spaced apart from the first sensing region in the second direction. ### Claim 3 (depends on 1) The display device of claim 1, wherein the sensor layer comprises: a plurality of first receiving electrodes, each extending in the second direction, spaced apart in the first direction, and located in the first sensing region; and a plurality of second receiving electrodes, each extending in the second direction, spaced apart in the first direction, and located in the second sensing region. ### Claim 4 (depends on 3) The display device of claim 3, wherein the plurality of first receiving electrodes are electrically insulated from the plurality of second receiving electrodes. ### Claim 5 (depends on 3) The display device of claim 3, wherein the plurality of first receiving electrodes are configured to output a first receiving signal in response to the first transmission signal, the second transmission signal, the third transmission signal, and the fourth transmission signal, and the plurality of second receiving electrodes are configured to output a second receiving signal in response to the fifth transmission signal and the sixth transmission signal. ### Claim 6 (depends on 5) The display device of claim 5, further comprising a readout circuit driving the sensor layer, wherein the readout circuit comprises a first readout circuit electrically connected to the plurality of first transmission electrodes and a second readout circuit electrically connected to the plurality of second transmission electrodes. ### Claim 7 (depends on 6) The display device of claim 6, wherein the first readout circuit is configured to provide the first transmission signal, the second transmission signal, the third transmission signal, and the fourth transmission signal to the plurality of first transmission electrodes, and the second readout circuit is configured to provide the fifth transmission signal and the sixth transmission signal to the plurality of second transmission electrodes. ### Claim 8 (depends on 6) The display device of claim 6, wherein the first readout circuit is configured to receive the first receiving signal from the plurality of first receiving electrodes, and the second readout circuit is configured to receive the second receiving signal from the plurality of second receiving electrodes. ### Claim 9 (depends on 1) The display device of claim 1, wherein an active region is defined in the display layer, the first sensing region overlaps a portion of the active region, and the second sensing region overlaps a remaining portion of the active region. ### Claim 10 (depends on 1) The display device of claim 1, wherein the fifth transmission signal, the sixth transmission signal, a seventh transmission signal, and an eighth transmission signal are each concurrently provided to four adjacent second transmission electrodes among the plurality of second transmission electrodes, the fifth to eighth transmission signals are provided concurrently with the first to fourth transmission signals. ### Claim 11 A display device comprising: a display layer; and a sensor layer on the display layer, having a sensing region including a first sensing region and a second sensing region adjacent to the first sensing region, and configured to work on a first sensing frame and a second sensing frame continuous with the first sensing frame, wherein the sensor layer comprises: a plurality of first transmission electrodes, each extending in a first direction, spaced apart in a second direction crossing the first direction, and located in the first sensing region; and a plurality of second transmission electrodes, each extending in the first direction, spaced apart in the second direction, and located in the second sensing region, each of first transmission electrodes adjacent to each other among the plurality of first transmission electrodes is configured to receive a corresponding one of a plurality of first transmission signals, each of second transmission electrodes adjacent to each other among the plurality of second transmission electrodes is configured to receive a corresponding one of a plurality of second transmission signals, one of the plurality of first transmission signals has a first waveform during the first sensing frame and at least three of remaining ones of the plurality of first transmission signals have a second waveform different from the first waveform during the first sensing frame, one of the plurality of second transmission signals has the second waveform during the first sensing frame and at least three of remaining ones of the plurality of second transmission signals have the first waveform during the first sensing frame, another one adjacent to the one of the plurality of first transmission signals has the first waveform during the second sensing frame and has the second waveform during the first sensing frame and at least three of remaining ones including the one of the plurality of first transmission signals have the second waveform during the second sensing frame, another one adjacent to the one of the plurality of second transmission signals has the second waveform during the second sensing frame and has the first waveform during the first sensing frame and at least three of remaining ones including the one of the plurality of second transmission signals have the first waveform during the second sensing frame. ### Claim 12 (depends on 11) The display device of claim 11, wherein the second sensing region is spaced apart from the first sensing region in the second direction. ### Claim 13 (depends on 11) The display device of claim 11, wherein the sensor layer comprises: a plurality of first receiving electrodes, each extending in the second direction, spaced apart in the first direction, and located in the first sensing region; and a plurality of second receiving electrodes, each extending in the second direction, spaced apart in the first direction, and located in the second sensing region. ### Claim 14 (depends on 13) The display device of claim 13, wherein the plurality of first receiving electrodes are electrically insulated from the plurality of second receiving electrodes. ### Claim 15 (depends on 11) The display device of claim 11, further comprising a readout circuit driving the sensor layer, wherein the readout circuit comprises a first readout circuit electrically connected to the plurality of first transmission electrodes and a second readout circuit electrically connected to the plurality of second transmission electrodes. ### Claim 16 (depends on 15) The display device of claim 15, wherein the first readout circuit is configured to provide the first transmission signal to the plurality of first transmission electrodes, and the second readout circuit is configured to provide the second transmission signal to the plurality of second transmission electrodes. ### Claim 17 (depends on 11) The display device of claim 11, wherein a display region is defined in the display layer, the first sensing region overlaps a portion of the display region, and the second sensing region overlaps a remaining portion of the display region.