# US 12,007,814 B2 · Flexible display assembly and electronic 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 12,007,814 B2 - Document ID: US12007814B2 - Status: Granted - Kind: B2 - Application number: 16/971,173 - Filed: 2020-08-06 - Published: 2023-03-30 - Granted: 2024-06-11 - Earliest claimed: 2019-08-06 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Seonghoon Kim - Web page: https://patentgrep.com/patent/US12007814B2 ## CPC - G06F 1/1616: {with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position} - G06F 1/1681: {Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683)} - F16C 11/04: Pivotal connections (hinges for doors, windows or wings E05D) - 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 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G09F 9/30: in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) - G09G 3/035: {for flexible display surfaces} - H04M 1/02: Constructional features of telephone sets - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract A flexible display assembly and an electronic device are provided. The electronic device includes the flexible display assembly. The flexible display assembly includes a display panel layer, an un-even structure layer, at least a part of which includes protrusions and recesses, a buffer layer arranged between the display panel layer and the un-even structure layer and including at least one projection, at least a part of which is inserted into a valley of the protrusions and recesses, and a support layer arranged on one surface of the buffer layer and formed to support at least a part of the buffer layer. ## Claims ### Claim 1 A flexible display assembly comprising: a display panel layer; an un-even structure layer, at least a part of which comprises protrusions and recesses; a buffer layer arranged between the display panel layer and the un-even structure layer and comprising at least one projection, at least a part of which is inserted into a valley of the protrusions and recesses; and a support layer arranged on one surface of the buffer layer and formed to support at least a part of the buffer layer, wherein the un-even structure layer comprises a digitizer for detecting an input by a digital pen, and wherein the digitizer comprises a dielectric layer and a plurality of electrodes, which are arranged with a specified separation distance therebetween on the dielectric layer to form a height difference with the dielectric layer. ### Claim 2 (depends on 1) The flexible display assembly of claim 1, wherein the protrusions and recesses comprise a plurality of electrode patterns based on the height difference between the plurality of electrodes and the dielectric layer, and wherein the valley of the protrusions and recesses comprises the separation distance between the plurality of electrodes. ### Claim 3 (depends on 1) The flexible display assembly of claim 1, wherein the un-even structure layer further comprises a metal plate for reinforcing rigidity of the flexible display assembly, and wherein the metal plate comprises, in one region thereof, a plurality of openings arranged with a separation distance therebetween. ### Claim 4 (depends on 3) The flexible display assembly of claim 3, wherein the protrusions and recesses comprise a grating structure of the metal plate based on the plurality of openings, and wherein the valley of the protrusions and recesses comprises the plurality of openings. ### Claim 5 (depends on 1) The flexible display assembly of claim 1, wherein at least a part of the buffer layer comprises a characteristic of density having a specified value or less. ### Claim 6 (depends on 1) The flexible display assembly of claim 1, wherein the buffer layer is formed to have a first strength, and wherein the support layer is formed to have a second strength higher than the first strength. ### Claim 7 (depends on 1) The flexible display assembly of claim 1, wherein the buffer layer comprises, in at least a part thereof, an ultra-thin glass (UTG). ### Claim 8 (depends on 1) The flexible display assembly of claim 1, wherein at least a part of the support layer comprises a characteristic of elastic modulus within a range of from about 50 GPa to about 103 GPa. ### Claim 9 (depends on 1) The flexible display assembly of claim 1, further comprising a metal layer arranged under the un-even structure layer, wherein at least a part of the metal layer comprises magnetic metal powder (MMP). ### Claim 10 (depends on 1) The flexible display assembly of claim 1, further comprising at least one polarization layer arranged at least partially on the display panel layer and between the display panel layer and the support layer. ### Claim 11 An electronic device comprising: at least one hinge structure; a first housing structure arranged on one side of the at least one hinge structure and connected to one region of the at least one hinge structure; a second housing structure arranged on another side of the at least one hinge structure, connected to another region of the at least one hinge structure, and performing folding and unfolding motions with respect to the first housing structure based on a hinge motion of the at least one hinge structure; and a flexible display assembly arranged so as to be supported by at least a part of the first housing structure and at least a part of the second housing structure, wherein the flexible display assembly comprises: a display panel layer; an un-even structure layer, at least a part of which includes protrusions and recesses; a buffer layer arranged between the display panel layer and the un-even structure layer and comprising at least one projection, at least a part of which is inserted into a valley of the protrusions and recesses; and a support layer arranged on one surface of the buffer layer and formed to support at least a part of the buffer layer. ### Claim 12 (depends on 11) The electronic device of claim 11, wherein the un-even structure layer comprises a digitizer for detecting an input by a digital pen, and wherein the digitizer comprises a dielectric layer and a plurality of electrodes, which are arranged with a specified separation distance therebetween on the dielectric layer to form a height difference with the dielectric layer. ### Claim 13 (depends on 12) The electronic device of claim 12, wherein the protrusions and recesses comprise a plurality of electrode patterns based on the height difference between the plurality of electrodes and the dielectric layer, and wherein the valley of the protrusions and recesses comprises the separation distance between the plurality of electrodes. ### Claim 14 (depends on 11) The electronic device of claim 11, further comprising: a metal plate arranged between the flexible display assembly and the first housing structure and second housing structure, wherein the metal plate comprises, in one region thereof corresponding to the at least one hinge structure, a plurality of openings arranged with a separation distance therebetween. ### Claim 15 (depends on 14) The electronic device of claim 14, wherein the un-even structure layer comprises the metal plate, wherein the protrusions and recesses comprise a grating structure of the metal plate based on the plurality of openings, and wherein the valley of the protrusions and recesses comprises the plurality of openings. ### Claim 16 (depends on 11) The electronic device of claim 11, wherein the buffer layer is formed to have a first strength, and wherein the support layer is formed to have a second strength higher than the first strength. ### Claim 17 (depends on 11) The electronic device of claim 11, wherein the flexible display assembly further comprises at least one polarization layer arranged at least partially on the display panel layer and between the display panel layer and the support layer. ### Claim 18 An electronic device comprising: a support member; a side surface member connected to at least a part of an edge of the support member; and a display assembly arranged in a space formed by connecting the support member and the side surface member, wherein the display assembly comprises: a window layer having a partial region that is adjacent to the side surface member and is bent in a first manner towards the side surface member with a specified curvature; a display panel layer arranged on one surface of the window layer and bent in a second manner with a curvature corresponding to the specified curvature; a wiring layer formed in a terminal end of a region, which is bent in the second manner, of the display panel layer and comprising at least one protrusion and recess; and a buffer layer arranged on one surface of the display panel layer so that at least a part of the buffer layer is adjacent to the wiring layer, wherein the at least a part adjacent to the wiring layer is inserted into a valley of the at least one protrusion and recess. ### Claim 19 (depends on 18) The electronic device of claim 18, wherein the flexible display assembly further comprises a support layer arranged on one surface of the buffer layer and formed to support at least a part of the buffer layer. ### Claim 20 (depends on 18) The electronic device of claim 18, wherein at least a part of the buffer layer comprises a characteristic of density having a specified value or less. ### Claim 21 (depends on 18) The electronic device of claim 18, wherein the buffer layer comprises, in at least a part thereof, an ultra-thin glass (UTG).