# US 9,436,224 B2 · Display device and method for sensing a bending of the device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,436,224 B2 - Document ID: US9436224B2 - Status: Granted - Kind: B2 - Application number: 14/482,851 - Filed: 2014-09-10 - Published: 2015-04-30 - Granted: 2016-09-06 - Earliest claimed: 2013-10-28 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: IlDoo Jeong - Web page: https://patentgrep.com/patent/US9436224B2 ## CPC - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - 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 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract The present invention relates to a display device including a panel which includes a plurality of electrodes which are arranged in parallel to each other, and a bending sensing unit that senses a bending of the panel by using a change in a capacitance between at least two electrodes among the plurality of electrodes. ## Claims ### Claim 1 A display device comprising: a panel comprising a plurality of electrodes which are located in parallel to each other; a plurality of intersection electrodes which intersect with the plurality of electrodes; a bending sensing unit that senses a bending of the panel by using a change in a capacitance between at least two electrodes among the plurality of electrodes; and a touch sensing unit confiruged to sense a touch of the panel by using a change in a capacitance between one electrode of the plurality of electrodes and one electrode of the plurality of intersection electrodes, wherein the bending sensing unit senses a bending in a first direction with respect to the panel by using the change in the capacitance between the at least two electrodes among the plurality of electrodes, and senses a bending in a second direction with respect to the panel by using a change in a capacitance between at least two electrodes among the plurality of intersection electrodes. ### Claim 2 (depends on 1) The display device of claim 1, wherein the bending sensing unit senses a bending of the panel at a time point which is different from a time point of when the touch sensing unit senses a touch. ### Claim 3 (depends on 1) The display device of claim 1, wherein the bending sensing unit applies a driving signal to one electrode among the at least two electrodes, receives a response signal with respect to the driving signal from the other electrode among the at least two electrodes, and senses the capacitance between the one electrode and the other electrode according to the response signal. ### Claim 4 (depends on 1) The display device of claim 1, wherein at least one different electrode is disposed between the at least two electrodes. ### Claim 5 (depends on 1) The display device of claim 1, further comprising a transmission unit that transmits, to another device, information on the sensed bending of the panel. ### Claim 6 A display device comprising: a panel comprising Tx electrodes and Rx electrodes which intersect with the Tx electrodes; a touch sensing unit that senses a touch with respect to the panel by using a change in a capacitance between the Tx electrodes and a change in a capacitance between the Rx electrodes; and a bending sensing unit that senses a bending of the panel by using the change in the capacitance between the Tx electrodes and the change in the capacitance between the Rx electrodes, wherein the bending sensing unit senses a bending in a first direction with respect to the panel by using a change in a capacitance between the Tx electrodes, and senses a bending in a second direction with respect to the panel by using a change in a capacitance between the Rx elecrodes. ### Claim 7 (depends on 6) The display device of claim 6, wherein the bending sensing unit senses the bending of the panel at a time point which is different from a time point of when the touch sensing unit senses a touch. ### Claim 8 (depends on 1) The display device of claim 1, wherein the bending sensing unit applies a driving signal to one intersection electrode among at least two intersection electrodes, receives a response signal with respect to the driving signal from the other intersection electrode among the at least two intersection electrodes, and senses the capacitance between the one intersection electrode and the other intersection electrode according to the response signal. ### Claim 9 (depends on 1) The display device of claim 1, wherein at least one different intersection electrode is disposed between at least two intersection electrodes. ### Claim 10 (depends on 1) The display device of claim 1, wherein the bending sensing unit senses a bending of the panel by using a change in a capacitance between at least two intersection electrodes among the plurality of the intersection electrodes. ### Claim 11 (depends on 6) The display device of claim 6, wherein the bending sensing unit applies a driving signal to one Tx electrode among at least two Tx electrodes, receives a response signal with respect to the driving signal from the other Tx electrode among the at least two Tx electrodes, and senses the capacitance between the one Tx electrode and the other Tx electrode according to the response signal. ### Claim 12 (depends on 6) The display device of claim 6, wherein the bending sensing unit applies a driving signal to one Rx electrode among at least two Rx electrodes, receives a response signal with respect to the driving signal from the other Rx electrode among the at least two Rx electrodes, and senses the capacitance between the one Rx electrode and the other Rx electrode according to the response signal. ### Claim 13 (depends on 6) The display device of claim 6, wherein at least one different Tx electrode is disposed between at least two Tx electrodes. ### Claim 14 (depends on 6) The display device of claim 6, wherein at least one different Rx electrode is disposed between at least two Rx electrodes. ### Claim 15 (depends on 6) The display device of claim 6, further comprising a transmission unit that transmits, to another device, information on the sensed bending of the panel.