# US 2024/0201811 A1 · Touch detection device and 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 2024/0201811 A1 - Document ID: US20240201811A1 - Status: Published application - Kind: A1 - Application number: 18/364,834 - Filed: 2023-08-03 - Published: 2024-06-20 - Earliest claimed: 2022-12-14 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jung Hak KIM - Web page: https://patentgrep.com/patent/US20240201811A1 ## CPC - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F 3/0412: {Digitisers structurally integrated in a display} - 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 3/0443: {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 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: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A touch detection device may include a touch area including a plurality of driving electrodes and a plurality of detecting electrodes, a plurality of touch driving integrated circuits (ICs) electrically connected to and supplying driving signals to the driving electrodes, a plurality of touch detecting ICs electrically connected to the detecting electrodes and receiving touch detection signals from the detecting electrodes, and a touch control IC controlling the touch driving ICs and the touch detecting ICs. The touch area may be divided into a plurality of sub-touch areas, the touch driving ICs may be provided to correspond to the plurality of sub-touch areas, respectively, in a one-to-one manner, and the plurality of touch detecting ICs may be provided to correspond to the sub-touch areas, respectively. ## Claims ### Claim 1 A touch detection device comprising: a touch area including a plurality of driving electrodes and a plurality of detecting electrodes crossing the plurality of driving electrodes; a plurality of touch driving integrated circuits (ICs) electrically connected to the plurality of driving electrodes and configured to supply driving signals to the plurality of driving electrodes; a plurality of touch detecting ICs electrically connected to the plurality of detecting electrodes and configured to receive touch detection signals from the plurality of detecting electrodes; and a touch control IC configured to control the plurality of touch driving ICs and the plurality of touch detecting ICs, wherein: the touch area is divided into a plurality of sub-touch areas, the plurality of touch driving ICs are provided to correspond to the plurality of sub-touch areas, respectively, and the plurality of touch detecting ICs are provided to correspond to the plurality of sub-touch areas, respectively. ### Claim 2 (depends on 1) The touch detection device of claim 1, wherein the touch control IC is provided as a single driving chip. ### Claim 3 (depends on 1) The touch detection device of claim 1, wherein the plurality of touch driving ICs and the plurality of touch detecting ICs are mounted on a substrate on which the plurality of driving electrodes and the plurality of detecting electrodes are formed. ### Claim 4 (depends on 3) The touch detection device of claim 3, wherein the touch control IC is mounted on a circuit board electrically connected to the substrate. ### Claim 5 (depends on 3) The touch detection device of claim 3, wherein each of the touch driving ICs and each of the touch detecting ICs are mounted in a touch peripheral area disposed adjacent to each of the sub-touch areas. ### Claim 6 (depends on 1) The touch detection device of claim 1, wherein the plurality of touch driving ICs and the plurality of touch detecting ICs are mounted on sub-circuit boards electrically connected to a substrate on which the plurality of driving electrodes and the plurality of detecting electrodes are formed. ### Claim 7 (depends on 6) The touch detection device of claim 6, wherein the touch control IC is mounted on a main circuit board electrically connected to the sub-circuit boards. ### Claim 8 (depends on 1) The touch detection device of claim 1, wherein the touch area includes a first sub-touch area, a second sub-touch area disposed in a first direction from the first sub-touch area, and a third sub-touch area disposed in the first direction from the second sub-touch area, the second sub-touch area is disposed between the first sub-touch area and the third sub-touch area, areas of the first to third sub-touch areas are equal to each other, and the plurality of touch driving ICs and the plurality of touch detecting ICs are mounted on touch peripheral areas positioned in a second direction perpendicular to the first direction from the first to third sub-touch areas. ### Claim 9 (depends on 8) The touch detection device of claim 8, further comprising switching units disposed between the first to third sub-touch areas, and the plurality of touch driving ICs and the plurality of touch detecting ICs, wherein the switching units include: a plurality of first switches configured to switch electrical connections between a plurality of channels connected to the driving electrodes or the detecting electrodes of the first to third sub-touch areas and the plurality of touch driving ICs based on first control signals, and a plurality of second switches configured to switch electrical connections between the plurality of channels and the plurality of touch detecting ICs based on second control signals. ### Claim 10 (depends on 9) The touch detection device of claim 9, wherein the touch control IC is set to activate the first control signals and the second control signals alternately. ### Claim 11 A display device comprising: a display panel; and a touch detection device including a touch area overlapping at least a portion of the display panel, wherein the touch detection device includes: the touch area including a plurality of driving electrodes and a plurality of detecting electrodes crossing the plurality of driving electrodes; a plurality of touch driving ICs electrically connected to the plurality of driving electrodes and supplying driving signals to the plurality of driving electrodes; a plurality of touch detecting ICs electrically connected to the plurality of detecting electrodes and receiving touch detection signals from the plurality of detecting electrodes; and a touch control IC controlling the plurality of touch driving ICs and the plurality of touch detecting ICs, and wherein: the touch area is divided into a plurality of sub-touch areas, the plurality of touch driving ICs are provided to correspond to the plurality of sub-touch areas, respectively, and the plurality of touch detecting ICs are provided to correspond to the plurality of sub-touch areas, respectively. ### Claim 12 (depends on 11) The display device of claim 11, wherein the touch control IC is provided as a single driving chip. ### Claim 13 (depends on 11) The display device of claim 11, wherein the plurality of touch driving ICs and the plurality of touch detecting ICs are mounted on a substrate on which the display panel is formed. ### Claim 14 (depends on 13) The display device of claim 13, wherein the touch control IC is mounted on a circuit board electrically connected to the substrate. ### Claim 15 (depends on 13) The display device of claim 13, wherein each of the touch driving ICs and each of the touch detecting ICs are mounted in a touch peripheral area disposed adjacent to each of the sub-touch areas. ### Claim 16 (depends on 11) The display device of claim 11, wherein the plurality of touch driving ICs and the plurality of touch detecting ICs are mounted on sub-circuit boards electrically connected to a substrate on which the display panel is formed. ### Claim 17 (depends on 16) The display device of claim 16, wherein the touch control IC is mounted on a main circuit board electrically connected to the sub-circuit boards. ### Claim 18 (depends on 11) The display device of claim 11, wherein the touch area includes a first sub-touch area, a second sub-touch area disposed in a first direction from the first sub-touch area, and a third sub-touch area disposed in the first direction from the second sub-touch area, the second sub-touch area is disposed between the first sub-touch area and the third sub-touch area, areas of the first to third sub-touch areas are equal to each other, and the plurality of touch driving ICs and the plurality of touch detecting ICs are mounted on touch peripheral areas positioned in a second direction perpendicular to the first direction from the first to third sub-touch areas. ### Claim 19 (depends on 18) The display device of claim 18, wherein the touch detection device further includes switching units disposed between the first to third sub-touch areas, and the plurality of touch driving ICs and the plurality of touch detecting ICs, and the switching units include: a plurality of first switches configured to switch electrical connections between a plurality of channels connected to the driving electrodes or the detecting electrodes of the first to third sub-touch areas and the plurality of touch driving ICs based on first control signals, and a plurality of second switches configured to switch electrical connections between the plurality of channels and the plurality of touch detecting ICs based on second control signals. ### Claim 20 (depends on 19) The display device of claim 19, wherein the touch control IC is set to activate the first control signals and the second control signals alternately. ### Claim 21 A display device, comprising: a plurality of detecting integrated circuits (ICs) coupled to a respective plurality of sub-touch areas; and a processor configured to determine that a touch input has occurred on one of the sub-touch areas, wherein: each of the plurality of detecting ICs is configured to output an analog touch signal generated by a first electrode of a corresponding one of the sub-touch areas, and the processor is configured to: convert the analog touch signal generated from each of the sub-touch areas to digital touch sensing data, and determine that touch input has occurred based on the digital touch sensing data. ### Claim 22 (depends on 21) The display device of claim 21, wherein the processor is configured to: generate touch identification data from the digital touch sensing data generated for each of the sub-touch areas, calculate touch data based on a combination of the touch identification data generated for the plurality of sub-touch areas, and determine that touch input has occurred based on the touch data. ### Claim 23 (depends on 21) The display device of claim 21, further comprising: a plurality of driving ICs, each of the plurality of driving ICs configured to drive a second electrode in a respective one of the sub-touch areas, wherein the processor is configured to control driving timings of the plurality of driving ICs.