# US 10,310,679 B2 · Flexible display device with touch panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,310,679 B2 - Document ID: US10310679B2 - Status: Granted - Kind: B2 - Application number: 14/693,496 - Filed: 2015-04-22 - Published: 2016-01-14 - Granted: 2019-06-04 - Earliest claimed: 2014-07-14 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Young Sik Kim; Jung Mok Park; Chang Bum Kim; Hyung Chul Kim - Web page: https://patentgrep.com/patent/US10310679B2 ## CPC - G06F 3/044: by capacitive means - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G06F 3/045: using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - 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 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - 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 flexible display device includes a display panel including a first surface including a display area configured to display an image, and a second surface disposed on the opposite side of the display panel from the first surface, and a touch panel disposed on the first surface, the touch panel including a base film and a transparent conductive layer disposed on a surface of the base film facing the display panel, in which at least a portion of each of the display panel and the touch panel is bendable such that centers of curvature of the display panel and the touch panel are positioned outside the second surface. ## Claims ### Claim 1 A flexible display device, comprising: a display panel comprising: a first surface comprising a display area configured to display an image; and a second surface disposed on the opposite side of the display panel from the first surface; and a touch panel disposed on the first surface, the touch panel comprising: a base film; and a transparent conductive layer disposed on a surface of the base film facing the display panel, wherein at least a portion of each of the display panel and the touch panel is bendable, such that centers of curvature of the display panel and the touch panel are positioned outside the second surface, and wherein the transparent conductive layer is configured to be applied with compressive force when the flexible display device is bent. ### Claim 2 (depends on 1) The flexible display device of claim 1, further comprising: a sensing electrode unit disposed on the base film; and a functional coating layer covering the transparent conductive layer and the sensing electrode unit, wherein the functional coating layer is configured to create an anchor effect with the sensing electrode unit. ### Claim 3 (depends on 2) The flexible display device of claim 2, wherein: the functional coating layer comprises an acryl-based resin or a polyurethane-based resin; and the thickness of the functional coating layer is in a range from 0.1 μm to 30 μm. ### Claim 4 (depends on 3) The flexible display device of claim 3, wherein the functional coating layer has a refractive index in a range from 1.3 to 2.0. ### Claim 5 (depends on 2) The flexible display device of claim 2, further comprising a protective film covering the functional coating layer. ### Claim 6 (depends on 5) The flexible display device of claim 5, wherein the protective film comprises at least one of polyethylene terephthalate (PET), cyclo-olefin polymer (COP), triacetyl cellulose (TAC), and polycarbonate (PC). ### Claim 7 A flexible display device, comprising: a display panel comprising: a first surface comprising a display area configured to display an image; and a second surface disposed on the opposite side of the display panel from the first surface; and a touch panel disposed on the first surface, the touch panel comprising: a base film; and a sensing electrode unit comprising a transparent conductive layer disposed on the base film, wherein: the sensing electrode unit comprises first sensing electrodes extending in a first direction and second sensing electrodes disposed in a second direction perpendicular to the first direction; at least one of the first sensing electrodes and the second sensing electrodes is disposed on a surface of the base film facing the display panel; at least a portion of each of the display panel and the touch panel is bendable, such that centers of curvature of the display panel and the touch panel are positioned outside the second surface; and the sensing electrode unit is configured to be applied with compressive force when the flexible display device is bent. ### Claim 8 (depends on 7) The flexible display device of claim 7, wherein: the first sensing electrodes and the second sensing electrodes are disposed on the surface of the base film facing the display panel; and the first sensing electrodes are insulated from the second sensing electrodes by an insulating layer. ### Claim 9 (depends on 8) The flexible display device of claim 8, further comprising: a functional coating layer covering the first sensing electrodes and the second sensing electrodes; and a protective film covering the functional coating layer. ### Claim 10 (depends on 7) The flexible display device of claim 7, wherein: the touch panel further comprises a first base film and a second base film overlapping each other; the first sensing electrodes are disposed on a surface of the first base film facing the display panel; and the second sensing electrodes are disposed on a surface of the second base film facing the display panel. ### Claim 11 (depends on 10) The flexible display device of claim 10, further comprising: a first functional coating layer covering the first sensing electrodes; and a second functional coating layer covering the second sensing electrodes. ### Claim 12 (depends on 11) The flexible display device of claim 11, wherein: the second functional coating layer is disposed closer to the display panel than the first functional coating layer; and the second functional coating layer is covered with a protective film. ### Claim 13 (depends on 7) The flexible display device of claim 7, wherein: the touch panel further comprises a first base film and a second base film overlapping each other; and the first sensing electrodes are disposed on a surface of the first base film facing the display panel. ### Claim 14 (depends on 13) The flexible display device of claim 13, wherein: the second base film is disposed closer to the display panel than the first base film; and the second sensing electrodes are disposed on a surface of the second base film facing the first base film. ### Claim 15 (depends on 14) The flexible display device of claim 14, further comprising: a first functional coating layer covering the first sensing electrodes; and a second functional coating layer covering the second sensing electrodes. ### Claim 16 A flexible display device, comprising: a display panel, comprising: a first surface comprising a display area configured to display an image; and a second surface disposed on the opposite side of the display panel from the first surface; a touch panel disposed on the first surface, the touch panel comprising: a base film; and a sensing electrode unit comprising a transparent conductive layer disposed on a surface of the base film facing the display panel; and a cover window disposed on the touch panel, wherein: the sensing electrode unit comprises: first sensing electrodes disposed on a surface of the cover window facing the base film; and second sensing electrodes disposed on a surface of the base film facing the display panel; at least a portion of each of the display panel, the touch panel, and the cover window is bendable, such that centers of curvature thereof are positioned outside the second surface; and the sensing electrode unit is configured to be applied with compressive force when the flexible display device is bent. ### Claim 17 (depends on 16) The flexible display device of claim 16, further comprising: a first functional coating layer covering the first sensing electrodes; and a second functional coating layer covering the second sensing electrodes. ### Claim 18 (depends on 17) The flexible display device of claim 17, further comprising a protective film covering the second functional coating layer.