# US 2019/0174658 A1 · Shielding portions of an electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174658 A1 - Document ID: US20190174658A1 - Status: Published application - Kind: A1 - Application number: 16/201,029 - Filed: 2018-11-27 - Published: 2019-06-06 - Earliest claimed: 2017-12-05 - Assignees: Google Inc. - Applicants: Google LLC - Inventors: Qi Qi; Wonjae Choi; Yi Tao - Web page: https://patentgrep.com/patent/US20190174658A1 ## CPC - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)} - H04M 1/0268: {including a flexible display panel} - H05K 1/0219: {Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors} - H05K 1/028: {Bending or folding regions of flexible printed circuits (H05K1/0283 takes precedence)} - H05K 9/0054: {specially adapted for display applications} - 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 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds - H05K 2201/10128: Display - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract Methods, systems, and apparatus, for shielding a bending portion of a flexible display that can be incorporated in electronic devices. One of the apparatus includes a cover glass element; a driver integrated circuit (D-IC); a mandrel portion; a shaft portion; a panel, positioned between the cover glass element and the D-IC, and comprising an inner panel layer that wraps around at least a portion of the mandrel portion to form a bending portion of the panel, the panel attached on either side on the shaft portion; and a shielding layer positioned around the inner panel layer and configured to inhibit electromagnetic signals through the bending portion. ## Claims ### Claim 1 A flexible display apparatus, comprising: a cover glass element; a driver integrated circuit (D-IC); a mandrel portion; a shaft portion; a panel, positioned between the cover glass element and the D-IC, and comprising an inner panel layer that wraps around at least a portion of the mandrel portion to form a bending portion of the panel, the panel attached on either side on the shaft portion; and a shielding layer positioned around the inner panel layer and configured to inhibit electromagnetic signals through the bending portion. ### Claim 2 (depends on 1) The flexible display apparatus of claim 1, further comprising a coating layer over the shielding layer. ### Claim 3 (depends on 2) The flexible display apparatus of claim 2, further comprising at least two grounding pads positioned between the inner panel layer and the shielding layer and on opposite sides of the mandrel portion. ### Claim 4 (depends on 2) The flexible display apparatus of claim 2, wherein the coating layer has an opening exposing a portion of the shielding layer. ### Claim 5 (depends on 2) The flexible display apparatus of claim 2, wherein the coating layer comprises a polyimide (PI) substrate. ### Claim 6 (depends on 2) The flexible display apparatus of claim 2, further comprising a second coating layer, wherein the second coating layer is positioned between the shielding layer and the inner panel layer. ### Claim 7 (depends on 6) The flexible display apparatus of claim 6, wherein the coating layer and the shielding layer are layers of a conductive tape positioned around the second coating layer. ### Claim 8 (depends on 7) The flexible display apparatus of claim 7, wherein the conductive tape has a thickness between 10 micrometers (μm) and 100 μm, and wherein the second coating layer has a thickness of between 100 μm to 50 μm. ### Claim 9 (depends on 1) The flexible display apparatus of claim 1, wherein the inner panel layer comprises a conductive material, and wherein the shielding layer comprises a second conductive material. ### Claim 10 (depends on 1) The flexible display apparatus of claim 1, wherein the panel is attached to either side of the shaft portion with pressure sensitive adhesive. ### Claim 11 (depends on 1) The flexible display apparatus of claim 1, wherein the shielding layer comprises a thin conductive layer deposited by sputtering or printing over the bending portion of the panel, and wherein the shielding layer has a thickness of between 5 μm and 20 μm. ### Claim 12 (depends on 1) The flexible display apparatus of claim 1, wherein the shaft portion comprises a foam material, and wherein the mandrel portion comprises an empty space. ### Claim 13 (depends on 1) The flexible display apparatus of claim 1, wherein the shaft portion and the mandrel portion are portions of a same component, and wherein the same component comprises a plastic material. ### Claim 14 (depends on 13) The flexible display apparatus of claim 13, wherein the plastic material comprises a thermosoftening plastic. ### Claim 15 A method of forming a mobile communication device flexible display apparatus comprising: wrapping a panel around a mandrel portion to form a bending portion of the panel; attaching the wrapped panel on either side of a shaft portion; positioning the panel and wrapped mandrel portion between a cover glass element and a driver integrated circuit (D-IC); and forming a shielding layer positioned around the bending portion of the panel, the shielding layer configured to inhibit electromagnetic signals through the bending portion. ### Claim 16 (depends on 15) The method of claim 15, further comprising forming a coating layer over the shielding layer. ### Claim 17 (depends on 16) The method of either of claim 16, further comprising before forming the shielding layer, positioning at least two grounding pads on the bending portion and on opposite sides of the mandrel portion. ### Claim 18 (depends on 16) The method of claim 16, further comprising forming an opening in the coating layer to expose a portion of the shielding layer. ### Claim 19 (depends on 16) The method of claim 16, further comprising before forming the shielding layer, forming a second coating layer positioned around the bending portion of the panel, wherein the shielding layer is formed around the second coating layer. ### Claim 20 A mobile communication device, comprising: a cover glass element; a driver integrated circuit (D-IC); a mandrel portion; a shaft portion; a panel, positioned between the cover glass element and the D-IC, and comprising an inner panel layer that wraps around at least a portion of the mandrel portion to form a bending portion of the panel, the panel attached on either side on the shaft portion; and a shielding layer positioned around the inner panel layer and configured to inhibit electromagnetic signals through the bending portion.