Electronic device with display panel speaker

An electronic device including a housing including a first plate facing a first direction, a second plate facing opposite to the first direction, and a side surface member surrounding a portion of a space between the first and second plates; a display panel disposed in a second direction of the first plate, and visually disposed through at least a portion of the first plate; a speaker disposed on one surface of the display panel facing in the second direction; a bracket including a first surface facing in the first direction and a second surface facing in the second direction, and disposed to support the display panel on the first surface; and a bonding configured to attach the display panel and the bracket. The bonding layer includes a gap formed by deleting a portion of the bonding layer to receive the speaker, and formed between the display panel and the bracket.

CROSS-REFERENCE TO RELATED APPLICATION

This application is based on and claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2019-0002702, filed on Jan. 9, 2019, in the Korean Intellectual Property Office, the disclosure of which is herein incorporated by reference in its entirety.

BACKGROUND

Various embodiments of the disclosure relate to a coupling structure between a display panel having a speaker attached thereto and a bracket.

2. Description of Related Art

An electronic device may have one or more speakers disposed in a main body thereof, and for example, speakers which are disposed on an upper end and a lower end of the main body, respectively, and reproduce sounds in the form of stereo may be excellent in performance. Such an electronic device may remove the speaker disposed on the upper end of the main body in order to realize a fill screen of a display panel.

To achieve this, a display panel speaker which directly radiates a sound by vibrating the display panel may be used. The display panel speaker may be substituted for the speaker disposed on the upper end of the main body.

Since the display panel speaker directly radiates a sound to the outside by vibrating the display panel, the display panel speaker does not require a speaker hole structure or a sound tunnel structure to provide a separate sound path for radiating a sound like a coil-type speaker. Therefore, the display panel speaker is increasingly used in an electronic device having a display panel mounted thereon.

The display panel of this structure has the speaker directly attached to a rear surface thereof, and therefore, may be applied to an organic light emitting diode (OLED), but is not applicable to a liquid crystal display device requiring a separate light source.

SUMMARY

However, the electronic device including display panel speaker may have a problem that performance of the speaker in a specific acoustic band deteriorates due to a bonding structure between the display panel speaker and a bracket.

Various embodiments of the disclosure provide an electronic device which can enhance acoustic performance of a speaker in a low frequency band by implementing an assembly structure of a display panel which reduces vibration stiffness of the display panel.

An electronic device according to various embodiments of the disclosure includes: a housing including a first plate facing in a first direction, a second plate facing in a direction opposite to the first direction, and a side surface member surrounding at least a portion of a space between the first and second plates; a display panel disposed in a second direction of the first plate, and visually disposed through at least a portion of the first plate; a speaker disposed on one surface of the display panel facing in the second direction; a bracket including a first surface facing in the first direction and a second surface facing in the second direction, and disposed between the first and second plates to support the display panel disposed on the first surface; and a bonding layer having a first thickness and configured to attach the display panel and the bracket, and the bonding layer may include a gap which is formed by deleting a portion of the bonding layer to receive the speaker, and is formed between the display panel and the bracket.

An electronic device according to various embodiments includes: a housing including a first plate facing in a first direction, a second plate facing in a direction opposite to the first direction, and a side surface member surrounding at least a portion of a space between the first and second plates; a display panel disposed in a second direction of the first plate, and visually disposed through at least a portion of the first plate; a speaker disposed on one surface of the display panel facing in the second direction; a bracket including a first surface facing in the first direction and a second surface facing in the second direction, and disposed between the first and second plates to support the display panel disposed on the first surface; and a bonding layer having a first thickness and configured to attach the display panel and the bracket, and the bracket may include a gap which is formed by deleting a portion of the bracket to receive the speaker, and is formed between the bonding layer and the bracket.

An electronic device according to various embodiments of the disclosure includes: a housing including a first plate facing in a first direction, a second plate facing in a direction opposite to the first direction, and a side surface member surrounding at least a portion of a space between the first and second plates; a display panel disposed in a second direction of the first plate, and visually disposed through at least a portion of the first plate; a speaker disposed on one surface of the display panel facing in the second direction; a bracket including a first surface facing in the first direction and a second surface facing in the second direction, and disposed between the first and second plates to support the display panel disposed on the first surface; a bonding layer having a first thickness and configured to attach the display panel and the bracket; a first gap formed by deleting a portion of the bonding layer and formed between the display panel and the bracket; and a second gap formed by deleting the first surface of the bracket, and formed between the bonding layer and the bracket.

DETAILED DESCRIPTION

Hereinafter, various embodiments of the disclosure will be described with reference to the accompanying drawings. It should be appreciated that various embodiments are not intended to limit the disclosure to particular embodiments, and include various modifications, equivalents, and/or alternatives of embodiments of the disclosure. With regard to the description of the drawings, similar reference numerals may be used to refer to similar elements.

An electronic device according to various embodiments of the disclosure may include at least one of, for example, smartphones, tablet personal computers (PCs), mobile phones, video telephones, electronic book readers, desktop PCs, laptop PCs, netbook computers, workstations, servers, personal digital assistant (PDAs), portable multimedia players (PMPs), Motion Picture Experts Group (MPEG-1 or MPEG-2) Audio Layer 3 (MP3) players, mobile medical devices, cameras, or wearable devices (for example, smart glasses, head-mounted-devices (HMDs), electronic apparels, electronic bracelets, electronic necklaces, electronic appcessory, electronic tattoos, smart mirrors, or smart watches).

FIG. 1is a perspective view illustrating a front surface of a mobile electronic device according to an embodiment.FIG. 2is a perspective view illustrating a rear surface of the electronic device ofFIG. 1.

Referring toFIGS. 1 and 2, the electronic device100according to an embodiment may include a housing110including a first surface (or a front surface)110A, a second surface (or a rear surface)110B, and a side surface100C surrounding a space between the first surface110A and the second surface110B. In another embodiment, the housing may refer structure which forms a part of the first surface110A, the second surface110B, and the side surface110C. According to an embodiment, the first surface110A may be formed by a front surface plate102having at least a portion substantially transparent (for example, a glass plate including various coating layers, or a polymer plate). The second surface110B may be formed by a substantially opaque rear surface plate111. The rear surface plate111may be formed by coated or colored glass, ceramic, polymer, metal (for example, aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the above-mentioned materials. The side surface110C may be formed by a side surface bezel structure (or a side surface member)118which is coupled with the front surface plate102and the rear surface plate111, and includes metal and/or polymer. In a certain embodiment, the rear surface plate111and the side surface bezel structure118may be integrally formed with each other, and may include the same material (for example, a metallic material such as aluminum).

In the illustrated embodiment, the front surface plate102may include two first regions110D which are bent from the first surface110A toward the rear surface plate111and are extended seamlessly on both ends of long edges of the front surface plate102. In the illustrated embodiment (seeFIG. 2), the rear surface plate111may include two second regions110E which are bent from the second surface110B toward the front surface plate102and are extended seamlessly on both ends of long edges. In a certain embodiment, the front surface plate102(or the rear surface plate111) may include only one of the first regions110D (or the second regions110E). In another embodiment, a portion of the first regions110D or the second regions110E may not be included. In the embodiments, when viewed from the side of the electronic device100, the side surface bezel structure118may have a first thickness (width) on a side surface that does not include the first regions110D or the second regions110E, and may have a second thickness which is thinner than the first thickness on a side surface that includes the first regions110D or the second regions110E.

According to an embodiment, the electronic device100may include at least one of a display101, an audio module103,107,114, a sensor module104,116,119, a camera module105,112,113, a key input device117, a light emitting element106, and a connector hole108,109. In a certain embodiment, the electronic device100may omit at least one of the elements (for example, the key input device117, or the light emitting element106), or may further include other elements.

The display101may be exposed through a corresponding portion of the front surface plate102, for example. In a certain embodiment, at least a portion of the display101may be exposed through the front surface plate102which forms the first surface110A and the first regions110D of the side surface110C. In a certain embodiment, a corner of the display101may be formed substantially the same as shapes of adjacent outer portions of the front surface plate102. In another embodiment a distance between an outer portion of the display101and the outer portion of the front surface plate102may be formed to be substantially the same as in order to expand an exposed area of the display101.

In another embodiment, a recess or an opening may be formed on a portion of a screen display region of the display101, and the electronic device100may include at least one of the audio module114, the sensor module104, the camera module105, and the light emitting element106which are aligned with the recess or opening. In another embodiment, the electronic device100may include, on a rear surface of the screen display region of the display101, at least one of the audio module114, the sensor module104, the camera module105, the fingerprint sensor116, and the light emitting element106. In another embodiment, the display101may be coupled with or disposed adjacent to a touch sensing circuit, a pressure sensor for measuring an intensity of a touch (pressure), and/or a digitizer for detecting a stylus pen in a magnetic field method. In a certain embodiment, at least a part of the sensor module104,119, and/or at least a part of the key input device117may be disposed on the first regions110D and/or the second regions110E.

The audio module103,107,114may include a microphone hole103and a speaker hole107,114. The microphone hole103may have a microphone disposed therein to obtain an external sound, and in a certain embodiment, a plurality of microphones may be disposed to detect a direction of a sound. The speaker hole107,114may include an external speaker hole107and a call receiver hole114. In a certain embodiment, the speaker hole107,114and the microphone hole103may be implemented as one hole or the electronic device100may include a speaker without the speaker hole107,114.

The sensor module104,116,119may generate an electric signal or a data value corresponding to an operation state of the inside of the electronic device100, or an external environment state. The sensor module104,116,119may include, for example, a first sensor module104(for example, a proximity sensor) and/or a second sensor module (for example, a fingerprint sensor) which is disposed on the first surface110A of the housing110, and/or a third sensor module119(for example, an HRM sensor) and/or a fourth sensor module116(for example, a fingerprint sensor) which is disposed on the second surface110B of the housing110. The fingerprint sensor may be displayed not only on the first surface110A (for example, the display101) of the housing110but also on the second surface110B. The electronic device100may further include a sensor module which is not shown, for example, at least one of a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor104.

The camera module105,112,113may include a first camera device105which is disposed on the first surface110A of the electronic device100, and a second camera device112and/or a flash113which is disposed on the second surface HOB. The camera devices105,112may include one or more lenses, an image sensor, and/or an image signal processor. The flash113may include, for example, a light emitting diode or a xenon lamp. In a certain embodiment, two or more lenses (an IR camera, a wide angle and telephoto lens), and image sensors may be disposed on one surface of the electronic device100.

The key input device117may be disposed on the side surface100C of the housing110. In another embodiment, the electronic device100may not include a portion or an entirety of the above-mentioned key input device117, and the key input device117that is not included may be implemented on the display101in other forms s as a soft key or the like. In a certain embodiment, the key input device may include the sensor module116disposed on the second surface110B.

The light emitting element106may be disposed on, for example, the first surface110A of the housing110. The light emitting element106may provide state information of the electronic device100in the form of light, for example. In another embodiment, the light emitting element106may provide a light source which is associated with an operation of the camera module105. The light emitting element106may include, for example, a light emitting diode (LED), an IR LED, and a xenon lamp.

The connector hole108,109may include a first connector hole108to receive a connector (for example, a USB connector) for transmitting and receiving power and/or data to and from an external electronic device, and/or a second connector hole (for example, an earphone jack)109to receive a connector for transmitting and receiving an audio signal to and from an external electronic device.

FIG. 3is an exploded perspective view illustrating an inner configuration of the electronic device ofFIG. 1.

Referring toFIG. 3, the electronic device300may include a side surface bezel structure310, a first support member311(for example, a bracket), a front surface plate320, a display330, a printed circuit board340, a battery350, a second support member360(for example, a rear case), an antenna370, and a rear surface plate380. In a certain embodiment, the electronic device300may omit at least one of the elements (for example, the first support member311, or the second support member360), or may further include other elements. At least one of the elements of the electronic device300may be the same as or similar to at least one of the elements of the electronic device100ofFIG. 1 or 2, and a redundant explanation is omitted.

The first support member311may be disposed inside the electronic device300, and may be connected with the side surface bezel structure310or may be integrally formed with the side surface bezel structure310. The first support member311may be formed with, for example, a metallic material and/or a non-metallic material (for example, polymer). The first support member311may have one surface to which the display330is coupled, and the other surface to which the printed circuit board340is coupled. The printed circuit board340may have a processor, a memory, and/or an interface mounted therein. The processor may include, for example, one or more of a central processing unit, an application processor, a graphic processing unit, an image signal processor, a sensor hub processor, or a communication processor.

The memory may include, for example, a volatile memory or a non-volatile memory.

The battery350may be a device which supplies power to at least one element of the electronic device300, and may include, for example, a primary battery which is not rechargeable, or a rechargeable secondary battery, or a fuel battery. At least a portion of the battery350may be disposed substantially on the same plane as the printed circuit board340. The battery350may be integrally disposed inside the electronic device300, or may be disposed to be attachable to and detachable from the electronic device300.

The antenna370may be disposed between the rear surface plate380and the battery350. The antenna370may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and/or a magnetic secure transmission (MST) antenna. The antenna370may perform short range communication with an external device, or may wirelessly transmit and receive power for charging. In another embodiment, an antenna structure may be formed by a part or a combination of the side surface bezel structure310and/or the first support member311.

FIG. 4Ais a top view illustrating a state in which a speaker is disposed on a display panel according to various embodiments of the disclosure.FIG. 4Bis a side view illustrating a state in which the speaker is disposed on the display panel and operates according to various embodiments of the disclosure.

Referring toFIGS. 4A and 4B, an electronic device400according to various embodiments may include a housing410. According to an embodiment, the housing may include a display panel420and a speaker430. According to an embodiment, the display panel420may include a first surface420afacing in a first direction ({circle around (1)}), and a second surface420bfacing in a second direction ({circle around (2)}) opposite to the first direction ({circle around (1)}).

According to an embodiment, the display panel420is a panel of a thin film type such as a film, and may be formed with a rigid material or a flexible material. According to an embodiment, the display panel420may be formed in a flat or curved shape or a combination thereof. For example, the display panel420may include an OLED.

According to an embodiment, the display panel420may include an upper region421and a lower region422. According to an embodiment, the speaker430may be disposed in the upper region421, but is not limited thereto and may be disposed in the lower region, a middle region, or an edge region of the electronic device. When the speaker430is mounted on the display panel420, the speaker may be referred to as a display panel speaker.

According to an embodiment, the display panel420may have the speaker430disposed on the second surface420b. The speaker430may be attached to the second surface420bby a bonding material B such as a tape. When the speaker430operates, generated vibration may be transmitted to the display panel420, and the transmitted vibration may be directed in the first direction ({circle around (1)}) by the display panel420. For example, the speaker430may include one or more thin film speakers430formed with a piezoelectric material, as a piezoelectric material. According to an embodiment, when the speaker430operates, the speaker430may generate vibration having directivity in the first direction ({circle around (1)}).

FIG. 5is a graph illustrating a result of measuring absolute displacement of a speaker attached to a display panel according to various embodiments of the disclosure.

Referring toFIG. 5, when the speaker (for example, the speaker430shown inFIG. 4A) attached to the display panel (for example, the display panel420shown inFIG. 4A) according to an embodiment operates, displacement between a maximum wavelength and a minimum wavelength of the speaker430may be approximately 80 μm.

To reproduce music of the electronic device according to an embodiment, displacement was measured with reference to a time at which the greatest displacement occurs by reproducing a signal of a frequency band (20 Hz to 20 kHz) of the speaker430. Displacement of a peripheral portion of the display panel to which the speaker is attached was measured, and it can be seen that the displacement is about 80 μm with reference to a point having the greatest displacement.

FIG. 6Ais a top view illustrating an electronic device to which a bonding layer is attached according to various embodiments of the disclosure.FIG. 6Bis a cross-sectional view illustrating a coupling structure between a display panel and a bracket according to various embodiments of the disclosure.

Referring toFIGS. 6A and 6B, the electronic device400according to various embodiments may include a display panel (for example, the display panel420shown inFIG. 4A), a speaker430attached to a second surface of the display panel420, a bracket440, and a bonding layer450. According to an embodiment, the electronic device400may have the display panel420, the bonding layer450, and the bracket440which are stacked one on another. According to an embodiment, the bonding layer450may be disposed in a second direction (for example, the second direction ({circle around (2)}) shown inFIG. 4B) of the display panel420, and the bracket440may be disposed in the second direction ({circle around (2)}) of the bonding layer450. According to an embodiment, the electronic device400may have the display panel420and the bracket440bonded to each other by the bonding layer450. For example, the bonding layer450may include a double-sided tape. One surface of the bonding layer450may be attached to the display panel420and the other surface may be attached to the bracket440.

According to an embodiment, the display panel420is configured as a thin film type OLED. Therefore, at least some regions of the display panel420, that is, some regions to which the speaker430is attached, may serve as a vibration plate to which vibration is transmitted as the speaker430vibrates. According to an embodiment, the bonding layer450may include a portion which is removed and a portion which is not removed. According to an embodiment, the bonding layer450that is not removed may be related to a function of attaching the display panel420and the bracket440to each other, and may be related to performance of an antenna as a spacer for maintaining a gap between the display panel420and the bracket440, that is, propagation performance. According to an embodiment, the bonding layer450may perform a bumper function to prevent a damage to the display panel420caused by impact occurring when the electronic device400drops down.

According to an embodiment, the bonding layer450may have a first thickness, and may be disposed between the display panel420and the bracket440and may have some regions removed. According to an embodiment, a bonding structure between the display panel420and the bracket440, that is, a portion of the bonding layer450, may be removed to reduce vibration stiffness of the display panel420.

According to an embodiment, a gap g1may be formed due to the removed portion of the bonding layer450. The gap g1according to an embodiment may be positioned between the second surface420bof the display panel420and a first surface440aof the bracket440as an opening in a layer form.

According to an embodiment, the gap g1which is the removed portion of the bonding layer450may receive a speaker (for example, the speaker430shown inFIG. 6A). Vibration stiffness of the display panel420may be reduced by removing a portion of the bonding layer450. Accordingly, the display panel420can achieve better acoustic performance in a low frequency band with a smaller force than before a portion of the bonding layer450is removed. According to an embodiment, the gap g1can enhance acoustic performance of the low frequency band of the speaker430. For example, the low frequency band may be between 200 Hz and 1 KHz.

According to an embodiment, when viewed above a first plate (for example, the front surface plate102shown inFIG. 1), the gap g1may cover the speaker430and a surrounding region of the speaker430, and may be substantially rectangular. However, the shape of the gap g1is not limited to the rectangle and may be formed in various shapes. According to an embodiment, the gap g1may have the same thickness as that of the bonding layer450. The thickness of the gap g1may be approximately 100 μm.

According to an embodiment, the bracket440may be a support member supporting the display panel420, and may be coupled with a side surface member (for example, the side surface member118shown inFIG. 1), and may be formed with a metallic material, for example, an aluminum material. According to an embodiment, the bracket440may be disposed between the display panel420and a second plate (for example, the rear surface plate111shown inFIG. 2). According to an embodiment, the bracket440may include a first surface440afacing in the first direction ({circle around (1)}), and the second surface440bfacing in the second direction ({circle around (2)}) opposite to the first direction ({circle around (1)}). The first surface440amay support the display panel420disposed thereabove. The reference sign BP may indicate a region in which a battery pack is disposed.

FIG. 7Ais a top view illustrating an electronic device to which a bonding layer is attached according to various other embodiments of the disclosure.FIG. 7Bis a cross-sectional view illustrating a coupling structure between a display panel and a bracket according to various other embodiments of the disclosure.

Referring toFIGS. 7A and 7B, the same elements of the electronic device500according to various embodiments as those of the electronic device400shown inFIGS. 6A and 6Bwill not be described and only different elements will be described.

Compared to the electronic device400shown inFIGS. 6A and 6B, the electronic device500according to various embodiments may differ therefrom in a forming position of a gap g2. According to an embodiment, the electronic device500may include the display panel420, the bonding layer450, the bracket440, and the gap g2.

According to an embodiment, the bonding layer450may have a first thickness, and may be disposed between the display panel420and the bracket440. According to an embodiment, a contact structure between the display panel420and the bracket440, that is, a portion of the bracket440, may be removed to reduce vibration stiffness of the display panel420.

According to an embodiment, the gap g2may be formed by removing a portion of the first surface440aof the bracket440. The gap g2according to an embodiment may be a recess in a layer shape, and may be positioned between the display panel420and the first surface440aof the bracket440.

According to an embodiment e vibration stiffness of the display panel420may further be reduced through the gap g2which is the removed portion of the bracket440. Accordingly, better acoustic performance can be achieved in a low-frequency band of the speaker according to an operation of the speaker (for example, the speaker430shown inFIG. 4A).

According to an embodiment, when viewed above the first plate (for example, the front surface plate102shown inFIG. 1), the gap g2may cover the speaker430and a surrounding region of the speaker430, and may be substantially rectangular. However, the shape of the gap g2is not limited to the rectangle and may be formed in various shapes. According to an embodiment, the thickness of the gap g2may be approximately 100 μm.

FIG. 8is a graph illustrating comparison of acoustic performance of the speaker when a portion of the bonding layer is removed, and acoustic performance when a portion of the bracket is removed according to various embodiments of the disclosure.

Referring toFIG. 8, acoustic performance of a low frequency band in an embodiment in which the gap g1is formed by removing a portion of the bonding layer (for example, the bonding layer450shown inFIG. 6B), and acoustic performance of a low frequency in an embodiment in which the gap g2is formed by removing a portion of the first surface440aof the bracket of an aluminum material (for example, the bracket440shown inFIG. 7B) may be similar to each other.

FIG. 9is a cross-sectional view illustrating a coupling structure between a display panel and a bracket according to various other embodiments of the disclosure.

Referring toFIG. 9, an electronic device600according to various embodiments may be formed in a structure combining the gap g1formed in the electronic device400shown inFIGS. 6A and 6B, and the gap g2formed in the electronic device500shown inFIGS. 7A and 7B. The same elements of the electronic device600according to an embodiment as those of the electronic device400shown inFIGS. 6A and 6Band the electronic device500shown inFIGS. 7A and 7Bwill not be described, and only different elements will be described.

The electronic device600according to an embodiment may include the display panel420, the bonding layer450, the bracket440, a first gap g3and a second gap g4.

The first gap g3according to an embodiment may be formed by deleting a portion of the bonding layer450, and may be formed between the display panel420and the bracket440. According to an embodiment, the second gap g4may be formed by deleting the first surface440aof the bracket440, and may be formed between the bonding layer450and the bracket440. The first gap g3may include an opening in a layer shape, and the second gap g4may include a recess which is recessed on the first surface440aof the bracket440in the form of a layer. According to an embodiment, the first and second gaps g3, g4may be stacked vertically and may be spatially connected with each other. A sum of thicknesses of the first and second gaps g3, g4may be approximately 100 μm. For example, the first gap g3may be approximately 50 μm, and the second gap g4may be approximately 50 μm.

FIG. 10is a top view illustrating an electronic device to which another bonding layer is attached according to various embodiments of the disclosure.

Referring toFIG. 10, the electronic device700according to various embodiments may differ from the electronic device400shown inFIG. 6Ain a shape of a removed portion of the bonding layer450.

According to an embodiment, the removed region of the bonding layer450may be extended to a lower region of the bracket440. According to an embodiment, the removed region of the bonding layer450may have a certain region shape, and as more regions are removed, vibration stiffness of the panel may be more reduced.

According to an embodiment, the removed region of the bonding layer450should avoid a symmetrical shape in the horizontal direction and the vertical direction. This is because performance of the speaker abruptly deteriorates in a specific frequency band due to characteristics of the display panel speaker which generates a sound through vibration of the display panel.

This is because, when sizes of regions having opposite phases in a specific vibration mode of the display panel are similar to each other, they may be offset and energy generating a sound is abruptly reduced. This is equally applied to a case in which the bracket is removed (for example, the second gap g2shown inFIG. 7B), and a case in which a gap is formed by using the bonding layer and the bracket simultaneously (for example, the first and second gaps g3, g4shown inFIG. 9).

FIG. 11is a cross-sectional view illustrating a coupling structure between a display panel and a bracket according to various other embodiments of the disclosure.

Referring toFIG. 11, the same elements of an electronic device800according to various embodiments as those of the electronic device400shown inFIGS. 6A and 6Bwill not be described and only different elements will be described.

The electronic device800according to an embodiment may include a curved display panel820, a curved bracket840, a bonding layer850, and a gap g5. The bonding layer850may attach the curved display panel820and the curved bracket840to each other.

The bonding layer850according to an embodiment may have the gap g5formed by removing some region thereof. The removed region of the bonding layer850may be formed as an opening in a layer form. According to an embodiment, the gap g5may be formed in a curved shape. According to an embodiment, a curved gap structure having the curved gap g5for bonding to a region of the curved display panel820formed on an edge region may be formed on the display panel820of the electronic device800.

According to an embodiment, the curved display panel820, the curved bracket840, the bonding layer850, and the gap g5may have respective radii of curvature.

FIG. 12is a cross-sectional view illustrating a coupling structure between a display panel and a bracket according to various other embodiments of the disclosure.

Referring toFIG. 12, the same elements of an electronic device900according to various embodiments as those of the electronic device500shown inFIGS. 7A and 7Bwill not be described and only different elements will be described.

The electronic device900according to an embodiment may include a curved display panel920, a curved bracket940, a bonding layer950, and a gap g6. The bonding layer950may attach the curved display panel920and the curved bracket940to each other.

The bracket940according to an embodiment may have the gap g6formed by removing some region thereof. The removed region of the bracket940may be formed as an opening in a layer form. According to an embodiment, the gap g6may be formed in a curved shape. According to an embodiment, a curved gap structure having the curved gap g6formed on the bracket940may be formed on a region of the curved display panel920formed on an edge region of the electronic device900.

According to an embodiment, the curved display panel920, the curved bracket940, the bonding layer950, and the gap g6may have respective radii of curvature.

According to an embodiment, an electronic device (for example, the electronic device400shown inFIG. 6A) may include: a housing (for example, the housing110shown inFIG. 1) including a first plate (for example, the first plate102shown inFIG. 1) facing in a first direction (for example, the first direction ({circle around (1)}) shown inFIG. 4B), a second plate (for example, the second plate111shown inFIG. 2) facing in a second direction (for example, the second direction ({circle around (2)}) shown inFIG. 4B) opposite to the first direction, and a side surface member (for example, the side surface member118shown inFIG. 1) surrounding at least a portion of a space between the first and second plates; a display panel (for example, the display panel420shown inFIG. 6B) disposed in the second direction of the first plate (for example, the first plate102shown inFIG. 1), and visually disposed through at least a portion of the first plate (for example, the first plate102shown inFIG. 1); a speaker (for example, the speaker430shown inFIG. 6A) disposed on one surface of the display panel facing in the second direction; a bracket (for example, the bracket440shown inFIG. 6B) including a first surface facing in the first direction and a second surface facing in the second direction, and disposed between the first and second plates to support the display panel disposed on the first surface; and a bonding layer (for example, the bonding layer450shown inFIG. 6B) having a first thickness and configured to attach the display panel and the bracket, and the bonding layer may include a gap (for example, the gap g1shown inFIG. 6B) which is formed by deleting a portion of the bonding layer to receive the speaker, and is formed between the display panel and the bracket.

According to an embodiment, the gap (for example, the gap g1shown inFIG. 6B) may include an opening in a layer shape.

According to an embodiment, the gap (for example, the gap g1shown inFIG. 6B) may cover a surrounding region of the speaker (for example, the speaker430shown inFIG. 6A) when viewed above the first plate (for example, the first plate102shown inFIG. 1).

According to an embodiment, the gap (for example, the gap g1shown inFIG. 6B) may be substantially rectangular when viewed above the first plate (for example, the first plate102shown inFIG. 1).

According to an embodiment, the gap (for example, the gap g1shown inFIG. 6B) may enhance performance of the speaker in a low frequency band by reducing a stiffness of the display panel.

According to an embodiment, the low frequency band may be between 200 Hz and 1 KHz.

According to an embodiment, the gap (for example, the gap g1shown inFIG. 6B) may be approximately 100 μm.

According to an embodiment, the bonding layer (for example, the bonding layer450shown inFIG. 6B) may maintain propagation performance by maintaining a gap between the display panel (for example, the display panel420shown inFIG. 6B) and the bracket (for example, the bracket440shown inFIG. 6B).

According to an embodiment, the speaker (for example, the speaker430shown inFIG. 6B) may include a piezoelectric speaker.

According to an embodiment, the display panel (for example, the display panel420shown inFIG. 6B) may include an OLED panel.

According to an embodiment, an electronic device (for example, the electronic device500shown inFIG. 7A) may include: a housing (for example, the housing410shown inFIG. 6A) including a first plate (for example, the first plate102shown inFIG. 1) facing in a first direction (for example, the first direction ({circumflex over (1)}) shown inFIG. 4B), a second plate (for example, the second plate111shown inFIG. 2) facing in a second direction (for example, the second direction ({circumflex over (2)}) shown inFIG. 4B) opposite to the first direction, and a side surface member (for example, the side surface member118shown inFIG. 1) surrounding at least a portion of a space between the first and second plates; a display panel (for example, the display panel420shown inFIG. 6B) disposed in the second direction of the first plate (for example, the first plate102shown inFIG. 1), and visually disposed through at least a portion of the first plate (for example, the first plate102shown inFIG. 1); a speaker (for example, the speaker430shown inFIG. 6A) disposed on one surface of the display panel facing in the second direction; a bracket (for example, the bracket440shown inFIG. 7B) including a first surface facing in the first direction and a second surface facing in the second direction, and disposed between the first and second plates to support the display panel disposed on the first surface; and a bonding layer (for example, the bonding layer450shown inFIG. 6B) having a first thickness and configured to attach the display panel and the bracket, and the bracket may include a gap (for example, the gap g2shown inFIG. 7B) which is formed by deleting a portion of the bracket to receive the speaker, and is formed between the bonding layer and the bracket.

According to an embodiment, the gap (for example, the gap g2shown inFIG. 7B) may include a recess which is recessed on the first surface of the bracket (for example, the bracket440shown inFIG. 7B) in a layer shape.

According to an embodiment, the gap (for example, the gap g2shown inFIG. 7B) may cover a surrounding region of the speaker (for example, the speaker430shown inFIG. 6A) when viewed above the first plate (for example, the first plate102shown inFIG. 1).

According to an embodiment, the gap (for example, the gap g2shown inFIG. 7B) may be positioned on an upper portion of the electronic device (for example, the electronic device400shown inFIG. 6A) and may be substantially rectangular when viewed above the first plate (for example, the first plate102shown inFIG. 1).

According to an embodiment, the gap (for example, the gap g2shown inFIG. 7B) may provide a space to enhance acoustic performance of the speaker in a low frequency band by reducing a stiffness of the display panel.

According to an embodiment, the bracket (for example, the bracket440shown inFIG. 7B) may be formed with an aluminum material.

According to an embodiment, the bonding layer (for example, the bonding layer450shown inFIG. 7B) may maintain propagation performance by maintaining a gap between the display panel (for example, the display panel420shown inFIG. 7B) and the bracket (for example, the bracket440shown inFIG. 7B).

According to an embodiment, an electronic device (for example, the electronic device600shown inFIG. 9) may include: a housing including a first plate (for example, the first plate102shown inFIG. 1) facing in a first direction, a second plate (for example, the second plate111shown inFIG. 2) facing in a second direction opposite to the first direction, and a side surface member surrounding at least a portion of a space between the first and second plates; a display panel (for example, the display panel420shown inFIG. 6B) disposed in the second direction of the first plate (for example, the first plate102shown inFIG. 1), and visually disposed through at least a portion of the first plate (for example, the first plate102shown inFIG. 1); a speaker (for example, the speaker430shown inFIG. 6A) disposed on one surface of the display panel facing in the second direction; a bracket (for example, the bracket440shown inFIG. 9including a first surface facing in the first direction and a second surface facing in the second direction, and disposed between the first and second plates to support the display panel disposed on the first surface; a bonding layer (for example, the bonding layer450shown inFIG. 9) having a first thickness and configured to attach the display panel and the bracket; a first gap (for example, the gap g3shown in FIG.) formed by deleting a portion of the bonding layer and formed between the display panel and the bracket; and a second gap (for example, the gap g4shown inFIG. 9) formed by deleting the first surface of the bracket, and formed between the bonding layer and the bracket.

According to an embodiment, the first gap (for example, the gap g3shown inFIG. 9) may include an opening in a layer shape, and the second gap (for example, the gap g4shown inFIG. 9) may include a recess which is recessed on the first surface of the bracket (for example, the bracket440shown in FIG.) in a layer shape.

According to an embodiment, the first and second gaps (for example, the gaps g3, g4shown inFIG. 9) may be stacked vertically, and may be spatially connected with each other.

In the bonding structure between the display panel and the bracket, an assembly structure of the display panel which can reduce vibration stiffness of the display panel is implemented by removing a portion of the bonding layer or a portion of the bracket, such that acoustic performance of the speaker in a low frequency band can be enhanced.