# US 11,029,788 B2 · Display device including a force sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,788 B2 - Document ID: US11029788B2 - Status: Granted - Kind: B2 - Application number: 16/523,455 - Filed: 2019-07-26 - Published: 2020-01-30 - Granted: 2021-06-08 - Earliest claimed: 2018-07-27 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Sungun Park; Youngjoo Lee; Heekwon Lee; Jeongil Yoo - Web page: https://patentgrep.com/patent/US11029788B2 ## CPC - G06F 1/1626: {with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]} - G06F 3/044: by capacitive means - G06F 1/1643: {the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615)} - G06F 1/1658: {related to the mounting of internal components, e.g. disc drive or any other functional module} - G06F 3/0416: {Control or interface arrangements specially adapted for digitisers} - 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 2203/04105: Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A display device including: a display panel; a printed circuit board connected to the display panel; an elastic element disposed between the display panel and the printed circuit board; a first conductor disposed between the elastic element and the printed circuit board; and a second conductor disposed between the elastic element and the display panel, and forming a capacitance with the first conductor, wherein the printed circuit board includes a first pad connected to the first conductor. ## Claims ### Claim 1 A display device, comprising: a display panel; a printed circuit board connected to the display panel; an elastic element disposed between the display panel and the printed circuit board; a first conductor disposed between the elastic element and the printed circuit board; and a second conductor disposed between the elastic element and the display panel, and forming a capacitance with the first conductor, wherein the printed circuit board comprises a first pad connected to the first conductor, wherein the printed circuit board comprises a cover layer having an opening corresponding to the first pad, and the first conductor is directly connected to the first pad through the opening, and wherein the display panel comprises a first portion comprising a display area, a second portion overlapping the first portion and a bending portion between the first portion and the second portion, and the printed circuit board is directly connected to the second portion. ### Claim 2 (depends on 1) The display device of claim 1, wherein the first conductor comprises a plurality of conductors separated from each other. ### Claim 3 (depends on 1) The display device of claim 1, wherein the first conductor is a conductive tape. ### Claim 4 (depends on 3) The display device of claim 3, wherein the conductive tape comprises an adhesive layer, a conductive layer, and an insulating layer. ### Claim 5 (depends on 1) The display device of claim 1, wherein the first conductor comprises a conductive paste. ### Claim 6 (depends on 1) The display device of claim 1, wherein the first pad contacts the first conductor. ### Claim 7 (depends on 1) The display device of claim 1, wherein the first pad overlaps the first conductor in a plan view. ### Claim 8 (depends on 1) The display device of claim 1, wherein the first pad is connected to a sensor controller configured to measure a change in the capacitance. ### Claim 9 (depends on 1) The display device of claim 1, wherein the printed circuit board comprises a second pad that is connected to the second conductor and to which a ground voltage is applied. ### Claim 10 (depends on 9) The display device of claim 9, wherein the printed circuit board comprises a cover layer having an opening corresponding to the second pad. ### Claim 11 (depends on 10) The display device of claim 10, further comprising a conductive tape or a conductive sponge that contacts the second pad and the second conductor. ### Claim 12 (depends on 1) The display device of claim 1, wherein the second conductor comprises a sheet that overlaps an entire surface of a display area of the display panel. ### Claim 13 (depends on 12) The display device of claim 12, wherein the second conductor comprises a heat radiation sheet. ### Claim 14 (depends on 1) The display device of claim 1, wherein the printed circuit board comprises a shielding layer that overlaps the first conductor in a plan view. ### Claim 15 (depends on 1) The display device of claim 1, further comprising a bracket configured to support the display panel and the printed circuit board. ### Claim 16 A display device, comprising: a display panel; a printed circuit board connected to the display panel; an elastic element disposed between the display panel and the printed circuit board; an adhesive disposed between the elastic element and the printed circuit board; and a first conductor disposed between the elastic element and the display panel, wherein the printed circuit board comprises a second conductor that forms a capacitance with the first conductor, wherein a cover layer is disposed between the adhesive and the second conductor and completely covers the second conductor, wherein the printed circuit board comprises a first pad that is connected to the first conductor and to which a ground voltage is applied, wherein the cover layer has an opening corresponding to the first pad, the first pad located at the same level as the second conductor in the printed circuit board, and wherein the second conductor is adjacent to the first pad. ### Claim 17 (depends on 16) The display device of claim 16, wherein the second conductor is connected to a sensor controller configured to measure a change in the capacitance. ### Claim 18 (depends on 16) The display device of claim 16, wherein the printed circuit board comprises a plurality of wiring layers separated from each other by an insulating layer, and the second conductor is disposed at a first wiring layer that is closest to the display panel among the plurality of wiring layers. ### Claim 19 (depends on 18) The display device of claim 18, wherein the printed circuit board comprises a shielding layer that is disposed at a second wiring layer adjacent to the first wiring layer, and overlaps the second conductor in a plan view. ### Claim 20 (depends on 16) The display device of claim 16, further comprising a conductive tape or a conductive sponge that contacts the first pad and the first conductor. ### Claim 21 (depends on 16) The display device of claim 16, wherein the first conductor comprises a sheet that overlaps an entire surface of a display area of the display panel. ### Claim 22 (depends on 21) The display device of claim 21, wherein the first conductor comprises a heat radiation sheet. ### Claim 23 (depends on 16) The display device of claim 16, further comprising a bracket configured to support the display panel and the printed circuit board. ### Claim 24 A display device, comprising: a display panel; a printed circuit board connected to the display panel; a sensing electrode disposed adjacent to the printed circuit board; a conductive sheet disposed adjacent to the display panel; and an elastic element disposed between the sensing electrode and the conductive sheet, wherein the printed circuit board comprises a pad connected to the sensing electrode, and wherein the display panel, a first portion of the conductive sheet, the elastic element, the sensing electrode and the printed circuit board are arranged in sequence, a second portion of the conductive sheet is disposed on the printed circuit board and faces the first portion of the conductive sheet and the display panel is disposed between the second portion of the conductive sheet and the printed circuit board.