# US 2021/0243529 A1 · Display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243529 A1 - Document ID: US20210243529A1 - Status: Published application - Kind: A1 - Application number: 17/235,611 - Filed: 2021-04-20 - Published: 2021-08-05 - Earliest claimed: 2018-09-18 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Sungsu HAM; YeongRak CHOI; Sungtae LEE; Joongsup HAN - Web page: https://patentgrep.com/patent/US20210243529A1 ## CPC - H04R 5/02: Spatial or constructional arrangements of loudspeakers - H04R 9/063: {using a plurality of acoustic drivers (H04R1/24 and H04R1/403 take precedence)} - H04R 5/04: Circuit arrangements, {e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments (combinations of amplifiers H03F3/68; stereophonic systems H04S)} - H04S 3/008: {in which the audio signals are in digital form, i.e. employing more than two discrete digital channels (data reduction aspects thereof based on psychoacoustics G10L19/02)} - H04R 2440/05: Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels - H04R 2499/15: Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops - H04S 2400/01: Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) - H04S: STEREOPHONIC SYSTEMS ## Abstract A display apparatus is capable of outputting a stereo sound. The display apparatus includes a display panel configured to display an image; a sound generating device on a rear surface of the display panel; a rear cover on the rear surface of the display panel and configured to support the sound generating device; a partition member between the rear surface of the display panel and the rear cover and configured to divide the display panel into first, second, third, fourth and fifth areas; and first, second, third, fourth, and fifth sound generating devices attached to the rear surface of the display panel and configured to vibrate the display panel. The first, second, third, fourth and fifth sound generating devices are in the first, second, third, fourth and fifth areas, respectively. ## Claims ### Claim 1 A display apparatus, comprising: a display panel configured to display an image; and a plurality of sound generating devices on a rear surface of the display panel, wherein the display panel comprises a plurality of area and each of the plurality of sound generating devices is in the plurality of area, and wherein at least two the plurality of sound generating devices are configured to output sound to a rear direction of the display panel, and the other sound generating devices of the plurality of sound generating devices is configured to output sound to a front direction of the display panel. ### Claim 2 (depends on 1) The display apparatus of claim 1, wherein the sound output to the front direction is a high-pitched sound band, and the sound output to the rear direction is a low-pitched sound band. ### Claim 3 (depends on 1) The display apparatus of claim 1, further comprising: a partition member surrounding each of the plurality of sound generating devices. ### Claim 4 (depends on 1) The display apparatus of claim 1, wherein the at least two of the plurality of sound generating devices is further configured to output sound to the front direction of the display panel. ### Claim 5 (depends on 4) The display apparatus of claim 4, wherein: the plurality of area comprises a first area, a second area, a third area, a fourth area and a fifth area; the plurality of sound generating devices comprises a first sound generating device, a second sound generating device, a third sound generating device, a fourth sound generating device, and a fifth sound generating device; and the first sound generating device, the second sound generating device, the third sound generating device, the fourth sound generating device, and the fifth sound generating device are in the first area, the second area, the third area, the fourth area and the fifth area, respectively. ### Claim 6 (depends on 5) The display apparatus of claim 5, wherein the plurality of sound generating devices is configured to output sound in the high-pitched sound band independently controlled in each of the first to fifth areas to the front direction of the display panel, and to output sound in the low-pitched sound band independently controlled in the first area and the second area to a rear direction of the display panel. ### Claim 7 (depends on 1) The display apparatus of claim 1, wherein: the plurality of area comprises a first area, a second area, a third area, a fourth area and a fifth area; the plurality of sound generating devices comprises a first sound generating device, a second sound generating device, a third sound generating device, a fourth sound generating device, and a fifth sound generating device; and the first sound generating device, the second sound generating device, the third sound generating device, the fourth sound generating device, and the fifth sound generating device are in the first area, the second area, the third area, the fourth area and the fifth area, respectively. ### Claim 8 (depends on 7) The display apparatus of claim 7, wherein the first area and the second area are in a lower area of the display panel, and wherein the third area, the fourth area, and the fifth area are in an upper area of the display panel above the first area and the second area. ### Claim 9 (depends on 8) The display apparatus of claim 8, wherein the first sound generating device and the second sound generating device is configured to output sound to the rear direction of the display panel, and the third sound generating device, the fourth sound generating device, and the fifth sound generating device is configured to output sound to the front direction of the display panel. ### Claim 10 (depends on 1) The display apparatus of claim 1, wherein: the plurality of area includes a first area, a second area, a third area, a fourth area, a fifth area and a sixth area; the plurality of sound generating devices comprises a first sound generating device, a second sound generating device, a third sound generating device, a fourth sound generating device, and a fifth sound generating device; and the first sound generating device, the second sound generating device, the third sound generating device, the fourth sound generating device, and the fifth sound generating device are in the first area, the second area, the third area, the fourth area and the fifth area, respectively. ### Claim 11 (depends on 1) The display apparatus of claim 1, wherein each of the at least two of the plurality of sound generating devices includes: a first sound generating module at the rear surface of the display panel; a second sound generating module spaced apart from the rear surface of the display panel; and a frame configured to accommodate the first sound generating module and the second sound generating module. ### Claim 12 (depends on 11) The display apparatus of claim 11, wherein the first sound generating module comprises: a first magnet disposed on the frame; a first plate disposed at an upper end of the first magnet; a first exciter surrounding the first magnet and the first plate; and a bobbin ring between the first exciter and the display panel. ### Claim 13 (depends on 12) The display apparatus of claim 12, wherein the second sound generating module comprises: a second magnet disposed on the frame; a second plate disposed at an upper end of the second magnet; a second exciter having a hollow and surrounding the second magnet and the second plate; and a vibration plate attached to the second exciter, wherein in the hollow of the second exciter, the first exciter is disposed away from the second exciter. ### Claim 14 (depends on 13) The display apparatus of claim 13, further comprising: a first damper between the first exciter and the second plate; and a second damper between the second exciter and the frame. ### Claim 15 (depends on 13) The display apparatus of claim 13, further comprising: a first air gap in a periphery of the display panel; and a second air gap in a periphery of the vibration plate. ### Claim 16 (depends on 15) The display apparatus of claim 15, wherein the first sound generating module is configured to output sound having a high-pitched sound band, and the second sound generating module is configured to output sound having a low-pitched sound band by vibration at least one of the first air gap and the second air gap. ### Claim 17 (depends on 15) The display apparatus of claim 15, wherein the frame includes at least one hole. ### Claim 18 (depends on 17) The display apparatus of claim 17, wherein the first sound generating module is configured to output sound having a high-pitched sound band, and the second sound generating module is configured to output sound having a low-pitched sound band by vibration at least one of the first air gap and the second air gap by the at least one hole. ### Claim 19 (depends on 12) The display apparatus of claim 12, further comprising a speaker box configured to accommodate the frame. ### Claim 20 (depends on 11) The display apparatus of claim 11, wherein the frame includes at least one hole. ### Claim 21 (depends on 1) The display apparatus of claim 1, further comprising a rear cover on a rear surface of the display panel and including at least one hole.