# US 2020/0401187 A1 · Foldable display device and sound providing method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0401187 A1 - Document ID: US20200401187A1 - Status: Published application - Kind: A1 - Application number: 16/824,438 - Filed: 2020-03-19 - Published: 2020-12-24 - Earliest claimed: 2019-06-21 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jung Hun NOH; Eun Kyung YEON; Yi Joon AHN - Web page: https://patentgrep.com/patent/US20200401187A1 ## 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 1/1694: {the I/O peripheral being a single or a set of motion sensors for pointer control or gesture input obtained by sensing movements of the portable computer} - G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing} - G06F 1/1641: {the display being formed by a plurality of foldable display components (G06F1/1647 takes precedence)} - 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 1/1677: {for detecting open or closed state or particular intermediate positions assumed by movable parts of the enclosure, e.g. detection of display lid position with respect to main body in a laptop, detection of opening of the cover of battery compartment} - G06F 1/1684: {Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675} - G06F 1/1688: {the I/O peripheral being integrated loudspeakers} - G06F 3/016: {Input arrangements with force or tactile feedback as computer generated output to the user} - G06F 3/0416: {Control or interface arrangements specially adapted for digitisers} - G06F 3/165: {Management of the audio stream, e.g. setting of volume, audio stream path} - G06F 2200/1614: Image rotation following screen orientation, e.g. switching from landscape to portrait mode - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A foldable display device includes: a display panel including a first area and a second area that are symmetrical with respect to a folding axis; a lower member below the display panel; a first sound output unit on a lower surface of the first area; a first fixing part above the lower surface of the first area and overlapping the first sound output unit in a thickness direction; and a first vibration output unit on a lower surface of the second area, wherein the first fixing part and the first vibration output unit are symmetrical with respect to the folding axis. ## Claims ### Claim 1 A foldable display device comprising: a display panel including a first area disposed on one side of a folding axis, and a second area disposed on the other side of the folding axis; a lower member below the display panel; a first sound output unit on a lower surface of the first area; a first fixing part above the lower surface of the first area and overlapping the first sound output unit in a thickness direction; and a first vibration output unit on a lower surface of the second area. ### Claim 2 (depends on 1) The foldable display device of claim 1, wherein the first fixing part comprises a magnetic material having a magnetic force. ### Claim 3 (depends on 1) The foldable display device of claim 1, wherein the first sound output unit and the first fixing part are spaced apart from each other in the thickness direction. ### Claim 4 (depends on 1) The foldable display device of claim 1, wherein the lower member comprises: a cover panel below the display panel; a middle frame below the cover panel; a circuit board below the middle frame; and a bottom cover below the circuit board. ### Claim 5 (depends on 4) The foldable display device of claim 4, wherein the first sound output unit and the first vibration output unit do not overlap the cover panel in the thickness direction and are coupled to the display panel by a first adhesive member. ### Claim 6 (depends on 4) The foldable display device of claim 4, wherein the first fixing part does not overlap the middle frame and the circuit board. ### Claim 7 (depends on 6) The foldable display device of claim 6, wherein the first fixing part overlaps the bottom cover, and a first surface of the first fixing part is coupled to the bottom cover by a second adhesive member. ### Claim 8 (depends on 7) The foldable display device of claim 7, wherein a second surface of the first fixing part, which is a surface opposite to the first surface of the first fixing part, is coupled to the cover panel by a third adhesive member. ### Claim 9 (depends on 4) The foldable display device of claim 4, wherein the first vibration output unit does not overlap the cover panel, the middle frame, and the circuit board in the thickness direction. ### Claim 10 (depends on 9) The foldable display device of claim 9, wherein a first surface of the first vibration output unit is coupled to the display panel by a fourth adhesive member, and a second surface of the first vibration output unit, which is a surface opposite to the first surface of the first vibration output unit, is coupled to the bottom cover by a fifth adhesive member. ### Claim 11 (depends on 1) The foldable display device of claim 1, wherein the first vibration output unit comprises a lower chassis, a flexible circuit board, a voice coil, a magnet, a spring, and an upper chassis. ### Claim 12 (depends on 1) The foldable display device of claim 1, wherein the first sound output unit is configured to generate sound in a mid-to-high frequency band, and the first vibration output unit is configured to generate sound in a low-frequency band. ### Claim 13 (depends on 1) The foldable display device of claim 1, further comprising a second vibration output unit on the lower surface of the first area, a second sound output unit on the lower surface of the second area, and a second fixing part above the lower surface of the second area to overlap the second sound output unit in the thickness direction. ### Claim 14 (depends on 13) The foldable display device of claim 13, wherein the second fixing part and the second vibration output unit are symmetrical with respect to the folding axis. ### Claim 15 (depends on 13) The foldable display device of claim 13, wherein the second fixing part comprises a magnetic material having a magnetic force, and the second vibration output unit comprises a lower chassis, a flexible circuit board, a voice coil, a magnet, a spring, and an upper chassis. ### Claim 16 A foldable display device comprising: a display panel including a first area disposed on one side of a folding axis, and a second area disposed on the other side of the folding axis; a lower member below the display panel; a first sound output unit on a lower surface of the first area; a first fixing part above the lower surface of the first area to overlap the first sound output unit in a thickness direction; a second fixing part above the lower surface of the first area; a first vibration output unit on the lower surface of the first area at a position between the first sound output unit and the second fixing part; a third fixing part above the lower surface of the first area at a position between the first sound output unit and the second fixing part; a second sound output unit on a lower surface of the second area; a fourth fixing part above the lower surface of the second area to overlap the second sound output unit in the thickness direction; a fifth fixing part above the lower surface of the second area; a second vibration output unit on the lower surface of the second area at a position between the second sound output unit and the fourth fixing part; and a sixth fixing part above the lower surface of the second area at a position between the second sound output unit and the fourth fixing part. ### Claim 17 (depends on 16) The foldable display device of claim 16, wherein each of the first to sixth fixing parts comprises a magnetic material having a magnetic force. ### Claim 18 (depends on 16) The foldable display device of claim 16, wherein each of the first and second vibration output units comprises a lower chassis, a flexible circuit board, a voice coil, a magnet, a spring, and an upper chassis. ### Claim 19 (depends on 16) The foldable display device of claim 16, wherein the lower member comprises: a cover panel below the display panel; a middle frame below the cover panel; a circuit board below the middle frame; and a bottom cover below the circuit board. ### Claim 20 (depends on 19) The foldable display device of claim 19, wherein the first fixing part and the fourth fixing part do not overlap the middle frame and the circuit board.