Foldable electronic device including waterproof structure

Abstract

The present document discloses a foldable electronic device including: a first housing (210) including a through-hole (810, 1010) at least partially inclined; a second housing (220) rotatably connected to the first housing (210); a first display (240) disposed on a first surface (211) of the first housing (210); a second display (340) disposed on a second surface (212) of the first housing (210); a first waterproof member (410) disposed between the second surface (212) of the first housing (210) and the second display (340) and overlapping at least a portion of the through-hole (810, 1010); a second waterproof member (420) disposed to be spaced apart from the first waterproof member (410) between the second surface (212) of the first housing (210) and the second display (340) and overlapping at least a portion of the through-hole (810, 1010); and a third waterproof member (430) filled in the through-hole (810, 1010) to connect the first waterproof member (410) to the second waterproof member (420).

Description

Foldable electronic device including waterproof structure

[0001] One embodiment of the present document relates to a foldable electronic device including a waterproof structure.

[0002] Portable electronic devices, such as smartphones, can provide various functions, including calling functions, based on various applications. During the process of providing these functions, the portable electronic device can display a screen corresponding to each function. Users may desire a wider screen to utilize the various functions described above. However, in typical portable electronic devices, enlarging the display for screen display increases the overall size, which can reduce portability. Accordingly, foldable portable electronic devices are being developed to increase the screen size while maintaining portability. Foldable electronic devices may require a sealed, waterproof, and / or dustproof structure to prevent damage to the electronic components located within the device due to moisture and / or foreign substances entering from the outside.

[0003] A foldable electronic device (or portable electronic device, portable communication device, foldable electronic device, or foldable electronic device having communication function) according to at least one embodiment of the present document comprises: a first housing (210) including a through hole (810, 1010) formed at least in part slanted; a second housing (220) rotatably connected to the first housing (210); a first display (240) disposed on a first surface (211) of the first housing (210); a second display (340) disposed on a second surface (212) of the first housing (210); a first waterproof member (410) disposed between the second surface (212) of the first housing (210) and the second display (340) and overlapping at least a part of the through hole (810, 1010) when viewing the first display (240) from above (or when viewing in the z-axis or -z-axis direction); A second waterproof member (420) is disposed between the second surface (212) of the first housing (210) and the second display (340) to be spaced apart from the first waterproof member (410) and overlaps at least a portion of the through hole (810, 1010) when the first display (240) is viewed from above (or when viewed in the z-axis or -z-axis direction); and a third waterproof member (430) is filled in the through hole (810, 1010) to connect the first waterproof member (410) and the second waterproof member (420).

[0004] An electronic device according to an embodiment disclosed in the present document may include a housing (210) including a through hole (810, 1010) formed at least in part to be inclined; a display (340) disposed in the housing (210); and a waterproof structure (400) disposed between the housing (210) and the display (340), wherein the waterproof structure (400) may include a first waterproof member (410) in an open loop shape; a second waterproof member (420) in an open loop shape disposed in an open portion of the first waterproof member (410); and a third waterproof member (430) filled in the through hole (810, 1010) and connecting between the first waterproof member (410) and the second waterproof member (420).

[0005] FIG. 1 is a diagram illustrating an unfolded state of an electronic device according to one embodiment of the present disclosure.

[0006] FIG. 2 is a diagram illustrating a folded state of an electronic device according to one embodiment of the present disclosure.

[0007] FIG. 3 is an exploded perspective view of an electronic device according to one embodiment.

[0008] FIG. 4 is an exploded perspective view showing an electronic device including a waterproof structure according to one embodiment.

[0009] FIG. 5A is a plan view showing a first waterproof structure of an electronic device according to one embodiment, and FIG. 5B is a cross-sectional view showing an electronic device including the first waterproof structure taken along line A-A'.

[0010] FIG. 6 is a plan view showing the back surface of a sub-display according to one embodiment.

[0011] Fig. 7 is a cross-sectional view showing a sub-display taken along line B-B' in Fig. 6.

[0012] FIG. 8A is a plan view showing a portion of an electronic device including a first waterproof member, a second waterproof member, and a third waterproof member according to one embodiment, FIG. 8B is a cross-sectional view showing the electronic device taken along line C-C' in FIG. 8A, and FIG. 8C is a cross-sectional view showing the electronic device taken along line D-D' in FIG. 8A.

[0013] FIG. 9 is a drawing showing a method of assembling an electronic device including a third waterproof member of an electronic device according to one embodiment.

[0014] FIG. 10 is a drawing showing an electronic device according to one embodiment having a speaker hole and a through hole.

[0015] FIG. 11 is a drawing showing a method of assembling an electronic device including a third waterproof member of an electronic device according to one embodiment.

[0016] FIG. 12 is a drawing showing an electronic device including a bonding member according to one embodiment.

[0017] FIG. 13 is a drawing showing an electronic device including a bonding member according to one embodiment.

[0018] FIG. 14 is a drawing showing an electronic device according to one embodiment including a second through hole.

[0019] FIG. 15 is a drawing showing an electronic device according to one embodiment including a second through hole.

[0020] FIG. 16a is an exploded perspective view of a main display according to one embodiment, and FIG. 16b is a drawing specifically illustrating some of the layers illustrated in FIG. 16a.

[0021] FIGS. 17A to 17E are drawings for explaining a method of assembling an electronic device according to one embodiment.

[0022] Hereinafter, an embodiment of this document is described with reference to the attached drawings.

[0023] One embodiment of the present invention described below provides an electronic device capable of supporting a waterproof and / or dustproof structure of a sub-display as a foldable electronic device.

[0024] In addition, one embodiment of the present invention provides an electronic device capable of reducing a black area of ​​a sub-window by arranging a waterproof structure overlapping the main display between the sub-display and the first housing when the main display is viewed from above (or when viewed in the z-axis or -z-axis direction).

[0025] In addition, one embodiment of the present invention provides an electronic device capable of enlarging a transparent area of ​​a sub-window corresponding to an active area of ​​a sub-display by reducing a black area of ​​the sub-window.

[0026] In addition, one embodiment of the present invention provides an electronic device capable of reducing the size and weight of a sub-window by reducing the black area of ​​the sub-window.

[0027] In addition, various purposes and effects provided by the foldable electronic device according to one embodiment may be mentioned according to the embodiment of the detailed description.

[0028] FIG. 1 is a diagram illustrating an unfolded state of an electronic device according to one embodiment of the present disclosure. FIG. 2 is a diagram illustrating a folded state of an electronic device according to one embodiment of the present disclosure.

[0029] Referring to FIGS. 1 and 2, in one embodiment, an electronic device (200) may include a housing (201), a hinge cover (230) covering a foldable portion of the housing (201), and a flexible or foldable display (240) (hereinafter, simply “display” 240) disposed within a space formed by the housing (201). According to one embodiment, a surface on which the display (240) is disposed is defined as a front surface of the electronic device (200) (e.g., a first front surface (210a) and a second front surface (220a)). And, a surface opposite to the front surface is defined as a back surface of the electronic device (200) (e.g., a first back surface (210b) and a second back surface (220b)). Additionally, the surface surrounding the space between the front and the back is defined as a side surface of the electronic device (200) (e.g., a first side surface (211a) and a second side surface (221a)).

[0030] According to one embodiment, the housing (201) may include a first housing (210), a second housing (220) rotatably or pivotally coupled to the first housing (210), a rear cover (290), and a hinge module (e.g., the hinge module (202) of FIG. 3) (or a hinge structure). The hinge module (202) may provide at least one folding axis (A) that serves as a center of rotation of the first housing (210) and / or the second housing (220). The housing (201) of the electronic device (200) is not limited to the shape and combination illustrated in FIGS. 2 and 3, and may be implemented by a combination and / or combination of other shapes or parts. For example, in one embodiment, a portion of the first housing (210) and the rear cover (290) may be formed integrally, and the remaining portion of the second housing (220) and the rear cover (290) may be formed integrally. According to one embodiment, the first housing (210) is connected to a hinge module (e.g., the hinge module (202) of FIG. 3) and may include a first front side (210a) facing a first direction and a first rear side (210b) facing a second direction opposite to the first direction. The second housing (220) is connected to the hinge module (202) and includes a second front side (220a) facing a third direction and a second rear side (220b) facing a fourth direction opposite to the third direction, and may rotate about the hinge module (202) with respect to the first housing (210). Accordingly, the electronic device (200) may be variable between a folded state and an unfolded state. The electronic device (200) may have the first front side (210a) facing the second front side (220a) in a folded state, and the third direction may be substantially parallel to the first direction in an unfolded state. In the following, unless otherwise stated, the directions are described based on the unfolded state of the electronic device (200).

[0031] According to one embodiment, the first housing (210) and the second housing (220) are arranged on both sides with respect to the folding axis (A) as the center, and may have an overall symmetrical shape with respect to the folding axis (A). As described below, the angle or distance between the first housing (210) and the second housing (220) may vary depending on whether the state of the electronic device (200) is in an unfolded state, a folded state, or an intermediate state. According to one embodiment, the second housing (220), unlike the first housing (210), additionally includes a sensor area (224) in which various sensors (e.g., a front camera) are arranged, but may have a shape symmetrical with respect to the first housing (210) in other areas. According to one embodiment, the folding axis (A) may be a plurality of parallel folding axes (e.g., two). In the present disclosure, the folding axis (A) is provided along the longitudinal direction (Y-axis direction) of the electronic device (200), but the direction of the folding axis (A) is not limited thereto. For example, depending on the external design or the user's usage habits, the electronic device (200) may be understood to include a folding axis (A) extending along the width direction (e.g., X-axis direction).

[0032] According to one embodiment, the electronic device (200) may include a structure into which a digital pen can be inserted. For example, a hole (223) into which the digital pen can be inserted may be formed on a side of the first housing (210) or a side of the second housing (220) of the electronic device (200).

[0033] According to one embodiment, at least a portion of the first housing (210) and the second housing (220) may be formed of a metallic or non-metallic material having a rigidity of a size selected to support the display (240). At least a portion formed of the metallic material may provide a ground plane of the electronic device (200) and may be electrically connected to a ground conductor provided on a printed circuit board (e.g., the board portion (260) of FIG. 3).

[0034] According to one embodiment, the sensor area (224) may be formed to have a predetermined area adjacent to one corner of the second housing (220). However, the arrangement, shape, and size of the sensor area (224) are not limited to the illustrated example. For example, in one embodiment, the sensor area (224) may be provided in another corner of the second housing (220), an arbitrary area between the upper corner and the lower corner, or in the first housing (210). According to one embodiment, components for performing various functions built into the electronic device (200) may be visually exposed to the front of the electronic device (200) through the sensor area (224) or through one or more openings provided in the sensor area (224). In one embodiment, the components may include various types of sensors. The sensors may include, for example, at least one of a front camera, a receiver, or a proximity sensor.

[0035] According to one embodiment, a portion of the rear cover (290) may be disposed on one side of the folding axis (A) on the rear of the electronic device (200) and may have, for example, a substantially rectangular periphery, and the periphery may be wrapped by the first housing (210). Similarly, a remaining portion of the rear cover (290) may be disposed on the other side of the folding axis (A) on the rear of the electronic device (200) and the periphery may be wrapped by the second housing (220).

[0036] According to one embodiment, the rear cover (290) may have a shape that is substantially symmetrical about the folding axis (A). However, the rear covers (290) do not necessarily have mutually symmetrical shapes, and in one embodiment, the electronic device (200) may include rear covers (290) of various shapes.

[0037] According to one embodiment, the rear cover (290), the first housing (210), and the second housing (220) may form a space in which various components of the electronic device (200) (e.g., a printed circuit board or a battery) may be placed. According to one embodiment, one or more components may be placed or visually exposed on the rear surface of the electronic device (200). For example, at least a portion of a sub-display (e.g., the sub-display (244) of FIG. 3) may be visually exposed through the first rear surface area (283) of the rear cover (290). In one embodiment, one or more components or sensors may be visually exposed through the second rear surface area (292) of the rear cover (290). In one embodiment, the sensors may include a proximity sensor and / or a camera module (206) (e.g., a rear camera).

[0038] According to one embodiment, a front camera visually exposed to the front of the electronic device (200) through one or more openings provided in the sensor area (224) or a camera module (206) visually exposed through a second rear area (292) of the rear cover (290) may include one or more lenses, image sensors, and / or image signal processors. In one embodiment, two or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be arranged on one side of the electronic device (200).

[0039] Referring to FIG. 2, the hinge cover (230) may be configured to be disposed between the first housing (210) and the second housing (220) and to cover internal components (e.g., the hinge module (202) of FIG. 3). According to one embodiment, the hinge cover (230) may be covered by a portion of the first housing (210) and the second housing (220) or exposed to the outside, depending on the state of the electronic device (200) (flat state or folded state). For example, in the unfolded state, the hinge cover (230) may be substantially covered by the first housing (210) and the second housing (220), and in the folded state, most of the outer surface of the hinge cover (230) may be exposed to the outside.

[0040] According to one embodiment, as illustrated in FIG. 1, when the electronic device (200) is in an unfolded state, the hinge cover (230) may be covered by the first housing (210) and the second housing (220) and may not be exposed. For example, as illustrated in FIG. 2, when the electronic device (200) is in a folded state (e.g., a fully folded state), the hinge cover (230) may be exposed to the outside between the first housing (210) and the second housing (220). For example, when the first housing (210) and the second housing (220) are in an intermediate state where they are folded at a certain angle, the hinge cover (230) may be partially exposed to the outside between the first housing (210) and the second housing (220). However, in this case, the exposed area may be less than that in the fully folded state. In one embodiment, the hinge cover (230) may include a curved surface.

[0041] According to one embodiment, the display (240) may be placed on a space formed by the housing (201). For example, the display (240) may be mounted on a recess formed by the housing (201) and may constitute most of the front surface of the electronic device (200). Accordingly, the front surface of the electronic device (200) may include the display (240), a portion of the first housing (210) adjacent to the display (240) and a portion of the second housing (220). In addition, the rear surface of the electronic device (200) may include a rear cover (290), a portion of the first housing (210) adjacent to the rear cover (290), and a portion of the second housing (220) adjacent to the rear cover (290).

[0042] According to one embodiment, the display (240) may refer to a display in which at least a portion of the display can be transformed into a flat or curved surface. According to one embodiment, the display (240) may include a folding area (243), a first display area (241) arranged on one side (e.g., the left side of the folding area (243) illustrated in FIG. 1) with respect to the folding area (243), and a second display area (242) arranged on the other side (e.g., the right side of the folding area (243) illustrated in FIG. 1).

[0043] However, the division of the regions of the display (240) is exemplary, and the display (240) may be divided into a plurality of regions (for example, four or more or two) depending on the structure or function. For example, in the embodiment illustrated in FIG. 1, the regions of the display (240) may be divided by a folding region (243) extending parallel to the Y-axis or a folding axis (A-axis), but the display (240) may also be divided into regions based on another folding region (for example, a folding region parallel to the X-axis) or another folding axis (for example, a folding axis parallel to the X-axis). According to one embodiment, the display (240) may be combined with or disposed adjacent to a touch detection circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and / or a digitizer (not shown) configured to detect a magnetic field-type stylus pen.

[0044] According to one embodiment, the first display area (241) and the second display area (242) may have an overall symmetrical shape centered on the folding area (243). According to one embodiment (not shown), the second display area (242), unlike the first display area (241), may include a cut notch depending on the presence of the sensor area (224), but may have a shape symmetrical with respect to the first display area (241) in other areas. In other words, the first display area (241) and the second display area (242) may include a portion having a symmetrical shape and a portion having an asymmetrical shape.

[0045] Hereinafter, the operation of the first housing (210) and the second housing (220) and each area of ​​the display (240) according to the state of the electronic device (200) (e.g., flat state or unfolded state and folded state) will be described.

[0046] According to one embodiment, when the electronic device (200) is in a flat state (e.g., FIG. 2), the first housing (210) and the second housing (220) may be arranged to form a substantially 180-degree angle and the first display area (241) and the second display area (242) may face substantially the same direction. For example, in the flat state, the surface of the first display area (241) and the surface of the second display area (242) may form a 180-degree angle with each other and face the same direction (e.g., toward the front of the electronic device). The folding area (243) may form the same plane as the first display area (241) and the second display area (242).

[0047] According to one embodiment, when the electronic device (200) is in a folded state (e.g., FIG. 3), the first housing (210) and the second housing (220) may be arranged to face each other. The surface of the first display area (241) of the display (240) and the surface of the second display area (242) may form a narrow angle (e.g., between 0 and 10 degrees) with each other and may substantially face each other. The folding area (243) may be formed as a curved surface having at least a portion of a predetermined curvature.

[0048] According to one embodiment, when the electronic device (200) is in an intermediate state (folded state) (e.g., FIG. 3), the first housing (210) and the second housing (220) may be arranged at a certain angle with respect to each other. The surface of the first display area (241) of the display (240) and the surface of the second display area (242) may form an angle that is larger than the angle in the folded state and smaller than the angle in the unfolded state. The folding area (243) may be formed as a curved surface having at least a certain curvature, and the curvature at this time may be smaller than that in the folded state.

[0049] FIG. 3 is an exploded perspective view of an electronic device according to one embodiment.

[0050] Referring to FIG. 3, an electronic device (e.g., the electronic device (200) of FIGS. 1 and 2) may include a housing (201), a display (240), a hinge module (202), a battery (250), and a substrate (260). The housing (201) may include a first housing (210), a second housing (220), and a rear cover (290).

[0051] In one embodiment, the housing (201) may include a first housing (210), a second housing (220), a hinge cover (230), and a rear cover (290). The configuration of the first housing (210), the second housing (220), the hinge cover (230), and the rear cover (290) of FIG. 3 may be all or part of the same as the configuration of the first housing (210), the second housing (220), the hinge cover (230), and the rear cover (290) of FIG. 1 and / or FIG. 2. In one embodiment, a hinge module (202) may be arranged inside the housing (201) to rotatably connect the first housing (210) and the second housing (220).

[0052] According to one embodiment, the first housing (210) and the second housing (220) can be assembled to each other so as to be coupled to both sides of the hinge module (202). According to one embodiment, the first housing (210) can accommodate components of the electronic device (200) (e.g., the first circuit board (262) and / or the first battery (252)). The second housing (220) can accommodate components of the electronic device (200) (e.g., the second circuit board (264) and / or the second battery (254)).

[0053] According to one embodiment, the main display (240) (or first display) may include a first display area (241), a second display area (242), and a folding area (243). The configuration of the first display area (241), the second display area (242), and the folding area (243) of FIG. 3 may be all or part of the same as the configuration of the first display area (241), the second display area (242), and the folding area (243) of FIG. 1 and / or FIG. 2.

[0054] According to one embodiment, the sub-display (340) can display a screen in a different direction from the display areas (241, 242). For example, the sub-display (340) can output a screen in a direction opposite to the first display area (241). According to one embodiment, the sub-display (340) can be placed on the rear cover (290).

[0055] In one embodiment, the battery (250) may include a first battery (252) disposed within the first housing (210) and a second battery (254) disposed within the second housing (220). In one embodiment, the first battery (252) may be disposed on a first circuit board (262) (or a first printed circuit board), and the second battery (254) may be disposed on a second circuit board (264).

[0056] In one embodiment, the substrate portion (260) may include a first circuit board (262) disposed within the first housing (210) and a second circuit board (264) (or a second printed circuit board) disposed within the second housing (220). In one embodiment, the substrate portion (260) may include at least one flexible printed circuit board (not shown) for electrically connecting the first circuit board (262) and the second circuit board (264). In one embodiment, at least a portion of the flexible printed circuit board (not shown) may be disposed across the hinge module (202). In one embodiment, the first circuit board (262) and the second circuit board (264) may be disposed within a space formed by the first housing (210), the second housing (220), and the rear cover (290). Components for implementing various functions of the electronic device (200) can be placed on the first circuit board (262) and the second circuit board (264).

[0057] According to one embodiment, the electronic device may include a first decorative member (141) coupled along an edge of a first housing (210) and a second decorative member (142) coupled along an edge of a second housing (220). The first decorative member (141) and / or the second decorative member (142) may be formed of a metal or polymer material.

[0058] In one embodiment, the flexible display (240) can be positioned such that an edge of the first display area (241) is interposed between the first housing (210) and the first decoration member (141). The edge of the first display area (241) can be protected by the first decoration member (141). The flexible display (240) can be positioned such that an edge of the second display area (242) is interposed between the second housing (220) and the second decoration member (142). The edge of the second display area (242) can be protected by the second decoration member (142).

[0059] In the detailed description below, a configuration in which a first housing (210) and a second housing (220) are rotatably connected or coupled by a hinge module (or, referred to as a 'hinge structure') may be exemplified. However, it should be noted that this embodiment does not limit the electronic device according to one embodiment of the present disclosure. For example, the electronic device according to one embodiment of the present disclosure may include three or more housings, and "a pair of housings" in the embodiments disclosed below may mean "two housings that are rotatably coupled to each other among the three or more housings."

[0060] Hereinafter, a waterproof structure of an electronic device according to an embodiment will be described with reference to FIGS. 4 to 17E. In describing the embodiment of FIGS. 4 to 17E, reference may be made to the electronic device (200) of an embodiment illustrated in FIGS. 1 to 3, and components similar or identical to those of the embodiment illustrated in FIGS. 1 to 3 may be assigned the same reference numerals or omitted, and detailed descriptions thereof may also be omitted.

[0061] FIG. 4 is an exploded perspective view showing an electronic device including a waterproof structure according to one embodiment.

[0062] Referring to FIG. 4, an electronic device according to an embodiment may include a first housing (210), a second housing (220), a sub-display (340), a rear cover (290), a first waterproof structure (400), and a second waterproof structure (500). The first waterproof structure (400) and the second waterproof structure (500) may be formed to protect the interior of the electronic device from external moisture, humidity, and / or foreign substances.

[0063] The first waterproof structure (400) may be arranged in a closed loop form between the first housing (210) and the sub-display (340). The first waterproof structure (500) may form at least one first waterproof space (401) in a sealed form between the first housing (210) and the sub-display (340). At least one of the electronic components (e.g., a camera module) arranged on the first printed circuit board (262) and the first battery (252) may be arranged in the first waterproof space (401). At least one of the electronic components arranged on the first printed circuit board (262) and the first battery (252) may be arranged in the first waterproof space (401) formed to be sealed by the first waterproof structure (400), thereby being protected from external moisture, humidity, and / or foreign substances.

[0064] The second waterproof structure (500) may be arranged in a closed loop shape between the second housing (220) and the rear cover (290). The second waterproof structure (500) may form at least one second waterproof space (402) in a sealed shape between the second housing (220) and the rear cover (290). At least one of the electronic components (e.g., a camera module) arranged on the second printed circuit board (264) and the second battery (254) may be arranged in the second waterproof space (402). At least one of the electronic components arranged on the second printed circuit board (264) and the second battery (254) may be arranged in the second waterproof space (402) formed to be sealed by the second waterproof structure (500), thereby being protected from external moisture, humidity and / or foreign substances.

[0065] According to one embodiment, at least one of the first waterproofing structure (400) and the second waterproofing structure (500) may be formed to pass through a stepped area (or an area with a height difference). At least one of the first waterproofing structure (400) and the second waterproofing structure (500) may include a plurality of waterproofing members, thereby being formed in a closed loop shape even in the stepped area. Hereinafter, the first waterproofing structure (400) including a plurality of waterproofing members will be described.

[0066] FIG. 5A is a plan view showing a first waterproof structure of an electronic device according to one embodiment, and FIG. 5B is a cross-sectional view showing an electronic device including the first waterproof structure taken along line A-A'.

[0067] Referring to FIGS. 5A and 5B, a first waterproof structure (400) according to one embodiment may include a plurality of waterproof members (410, 420, 430). For example, the first waterproof structure (400) may include a first waterproof member (410), a second waterproof member (420), and a third waterproof member (430).

[0068] At least one of the first waterproofing member (410) and the second waterproofing member (420) may be formed in an open loop shape. Each of the first waterproofing member (410) and the second waterproofing member (420) may be formed in an open loop shape. The second waterproofing member (420) may be formed in an open loop shape that is placed in an open portion of the first waterproofing member (410).

[0069] According to one embodiment, the first waterproofing member (410) and the second waterproofing member (420) may be disposed on different planes. For example, the first waterproofing member (410) and the second waterproofing member (420) may be disposed on planes having different heights. The first waterproofing member (410) disposed on a first plane having a first height may be disposed to be spaced apart from the second waterproofing member (420) disposed on a second plane having a second height different from the first height by a specified interval. The third waterproofing member (430) may be formed between the first waterproofing member (410) and the second waterproofing member (420) to fill the space (or, step space, first receiving space) between the waterproofing member (410) and the second waterproofing member (420). The first waterproofing member (410) and the second waterproofing member (420) are physically connected through the third waterproofing member (430), so that the first waterproofing structure (400) can be formed in a closed loop shape.

[0070] According to one embodiment, at least one of the first waterproof member (410) and the second waterproof member (420) may be disposed between the sub-display (340) and the first housing (210). A sub-display panel (330) may be disposed between at least one of the first waterproof member (410) and the second waterproof member (420) and the sub-window (280) of the sub-display (340).

[0071] According to one embodiment, the first housing (210) may include a first mounting surface (110) on which the sub-window (280) is mounted, and a second mounting surface (311) on which at least one of the first waterproof member (410) and the second waterproof member (420) is mounted. The first mounting surface (110) and the second mounting surface (311) may be arranged to face the -z-axis direction. The first mounting surface (110) may be formed to have a step with respect to the second mounting surface (311). The second mounting surface (311) may be arranged closer to the sub-window (280) than the first mounting surface (110) and the third mounting surface (310) on which the sub-display panel (330) is mounted.

[0072] According to one embodiment, a portion of the second waterproofing member (420) may overlap with a black area (282) (or, an opaque area) of the sub-window (280) when viewed in the +z-axis direction. A remaining portion of at least one of the first waterproofing member (410) and the second waterproofing member (420) may overlap with a transparent area (281) of the sub-window (280) when viewed in the +z-axis direction.

[0073] According to one embodiment, when viewed in the +z-axis direction, the first waterproof member (410) and the second waterproof member (420) overlap with the sub-display panel (330), thereby reducing the size of the black area (282) of the sub-window (280). According to one embodiment, by reducing the black area (282) of the sub-window (280), the overall size and overall weight of the sub-window (280) can be reduced. According to one embodiment, the transparent area (281) of the sub-window (280), which corresponds to the active area of ​​the sub-display panel (330), can be enlarged by the amount by which the black area (282) of the sub-window (280) is reduced.

[0074] FIG. 6 is a plan view showing the back surface of a sub-display with the third waterproof member omitted according to one embodiment, and FIG. 7 is a cross-sectional view showing the sub-display taken along line B-B' in FIG. 6.

[0075] Referring to FIGS. 6 and 7, an electronic device according to one embodiment may include a sub-display (340), a first waterproof member (410), and a second waterproof member (420).

[0076] The sub-display (340) may include a sub-display panel (710) (e.g., the sub-display panel (330) of FIG. 5b), a display driver integrated circuit (DDI) (720), and a flexible substrate (730).

[0077] The display drive integrated circuit (720) can generate driving signals for driving each pixel arranged on the sub-display panel (710) in response to data and control signals supplied from the outside. The driving signals generated by the display drive integrated circuit (720) can be supplied to each pixel arranged on the sub-display panel (710).

[0078] A plurality of electrical components required for driving the display drive integrated circuit (720) may be mounted on the flexible substrate (730). The plurality of electrical components arranged on the flexible substrate (730) may include, for example, passive components such as a touch IC, a flash memory for a display, an ESD prevention diode, a pressure sensor, a fingerprint sensor, or a decap.

[0079] The sub-display panel (710) may include a bending portion (713) that is arranged in a manner of being folded from the active area (711) of the sub-display panel (710) toward at least a portion of the back surface (e.g., the surface facing the z-axis) of the sub-display (340). A bending portion protection layer (750) (e.g., a BPL (bending protection layer)) may be arranged on an outer surface of the bending portion (713) to protect at least a portion of the bending portion (713).

[0080] The sub-display panel (710) may include an extension portion (712) extending from the bending portion (713) and facing the back surface of the sub-display panel (710). The extension portion (712) may be electrically connected to a flexible substrate (730). A display driver integrated circuit (720) may be disposed on the extension portion (712). The display driver integrated circuit (720) disposed on the extension portion (712) may be protected by a circuit protection member (740). The circuit protection member (740) may be attached to cover at least a portion of the flexible substrate (730) to at least a portion of the extension portion (712). Since the circuit protection member (740) may be in direct contact with external moisture and / or foreign substances, it may be formed of a waterproof material itself.

[0081] A sheet member (600) including at least one of at least one metal sheet layer, at least one polymer layer, and at least one functional layer may be disposed on the back surface of the sub-display panel (710). The at least one functional layer may include a graphite sheet for heat dissipation, an added display, a force touch FPCB, a fingerprint sensor FPCB, a communication antenna radiator, or a conductive / non-conductive tape.

[0082] For example, a polymer layer (610) and a metal sheet layer (620) (or a reinforcing member) may be sequentially arranged on the back surface of the sub-display panel (710). The polymer layer (610) may be arranged on the back surface of the sub-display panel (710) to provide a dark background for ensuring visibility of the sub-display panel (710) and may be formed as a buffering material for buffering. The metal sheet layer (620) may help reinforce the rigidity of the electronic device, shield ambient noise, and may be used to disperse heat emitted from surrounding heat-emitting components.

[0083] According to one embodiment, the flexible substrate (730) may be attached to a metal sheet layer (620) located on the back surface of the sub-display panel (710) via a first adhesive (601). The extension portion (712) may be attached to the metal sheet layer (620) located on the back surface of the sub-display panel (710) via a second adhesive (602). The circuit protection member (740) may be attached to the extension portion (712) via a third adhesive (603). At least one of the first adhesive (601), the second adhesive (602), and the third adhesive member (603) may be omitted.

[0084] The first waterproofing member (410) may be formed along the remaining edge of the first waterproofing space (401) except for the lower edge (e.g., the edge facing the -Y axis) on the metal sheet layer (620). The first waterproofing member (410) may be formed along the remaining edge of the first waterproofing space (401) except for the lower edge disposed at a position corresponding to the circuit protection member (740). The first waterproofing member (410) may be formed along the upper edge (e.g., the edge facing the +Y axis), the left edge (e.g., the edge facing the -X axis), and the right edge (e.g., the edge facing the +X axis) of the first waterproofing space (401) on the metal sheet layer (620). A first component area (501) and a second component area (502) may be disposed around the upper edge of the first waterproofing space (401). For example, a camera device may be arranged in the first component area (501), and a sensor module may be arranged in the second component area (502). At least one electronic component arranged in the first component area (501) and the second component area (502) may be protected from external moisture and / or foreign substances by being arranged in the first waterproof space (401) sealed by the first waterproof member (410), the second waterproof member (420), and the third waterproof member (e.g., the third waterproof member (430) of FIG. 5A). The second waterproof member (420) may be formed along the lower edge of the first waterproof space (401) on the circuit protection member (740). The second waterproof member (420) may be arranged to be spaced apart from the first waterproof member (410). The first waterproof member (410) and the second waterproof member (420) may include at least one of tape, adhesive, waterproof dispensing, silicone, waterproof rubber, and urethane.

[0085] According to one embodiment, the first waterproof member (410) may include a first waterproof area (511) having an inverted U shape and a first protruding area (512) protruding from both ends of the first waterproof area (511) toward the second waterproof member (420). The first protruding area (512) may protrude in a direction perpendicular to the folding axis (e.g., the x-axis direction) from a portion of the first waterproof area (511) of the first waterproof member (410) extending along the folding axis (e.g., the folding axis (A) of FIG. 1 or the y-axis direction). The first protruding area (512) may be formed to face a corner point where a bending portion (713) of the sub-display panel and an extension portion (712) wider than the bending portion (713) meet.

[0086] The second waterproof member (420) may include a second waterproof area (521) in a stripe shape and a second protruding area (522) that protrudes from both ends of the second waterproof area (521) toward the first waterproof member (410). The second protruding area (522) may be formed to protrude toward the first waterproof area (511) extending along the y-axis direction of the first waterproof member (410) on the circuit protection member (740). The second protruding area (522) may be formed along the edge of the bending portion (713) and the edge of the extension portion (712) of the sub-display panel facing the first protruding area (512).

[0087] FIG. 8A is a plan view showing a portion of an electronic device including a first waterproof member, a second waterproof member, and a third waterproof member according to one embodiment, FIG. 8B is a cross-sectional view showing the electronic device taken along line C-C' in FIG. 8A, and FIG. 8C is a cross-sectional view showing the electronic device taken along line D-D' in FIG. 8A.

[0088] Referring to FIGS. 8A to 8C, an electronic device according to one embodiment may include a main display (240), a sub-display (340), a first housing (210), a first decorative member (141) (or a protective frame, a protective member, a decorative member) (e.g., the first decorative member (141) of FIG. 3), and a plurality of waterproof members (410, 420, 430).

[0089] The plurality of waterproof members (410, 420, 430) may include a first waterproof member (410), a second waterproof member (420), and a third waterproof member (430).

[0090] At least one of one end and the other end of the first waterproof member (410) (or, the first protruding region (512)) may include a first waterproof side (411) and a second waterproof side (412) facing in different directions. The first waterproof side (411) may be arranged to face the y-axis direction, and the second waterproof side (412) may be arranged to face the -x-axis direction. The first waterproof side (411) may be arranged to face the side of the extension portion (712) of the sub-display, and the second waterproof side (412) may be arranged to face the side of the bending portion (713) of the sub-display.

[0091] At least one of one end and the other end of the second waterproof member (420) (or, the second protruding region (522)) may include a third waterproof side (421) facing the first waterproof side (411) and a fourth waterproof side (422) facing the second waterproof side (412). The third waterproof side (421) may be arranged to face in an opposite direction to the first waterproof side (411), and the fourth waterproof side (422) may be arranged to face in an opposite direction to the second waterproof side (412). The third waterproof side (421) may be spaced apart from the first waterproof side by a specified distance, and the fourth waterproof side (422) may be spaced apart from the second waterproof side by a specified distance.

[0092] The third waterproofing member (430) can connect one end of the first waterproofing member (410) and the other end of the second waterproofing member (420) extending in the -x-axis direction toward the one end of the first waterproofing member, and can connect the other end of the first waterproofing member (410) and one end of the second waterproofing member (420) extending in the x-axis direction toward the other end of the first waterproofing member (410).

[0093] The third waterproofing member (430) may be disposed between the first waterproofing member (410) and the second waterproofing member (420). The third waterproofing member (430) may be formed in a step area between the first waterproofing member (410) and the second waterproofing member (420). The first waterproofing member (410) may be formed on a sheet member (600) (e.g., the metal sheet layer (620) of FIG. 7) disposed between the sub-display panel (710) and the first housing (210), and the second waterproofing member (420) may be formed on a circuit protection member (740) disposed at a position higher or lower than the sheet member (600). The third waterproofing member (430) may be formed between the first waterproofing member (410) and the second waterproofing member (420) to fill a gap formed by a height difference (step) between the sheet member (600) and the circuit protection member (740). The first waterproofing member (410) can be formed in a separated state so as to be spaced apart from the second waterproofing member (420) at a step portion by a specified distance. The third waterproofing member (430) fills the step portion including the specified distance between the first waterproofing member (410) and the second waterproofing member (420) without a gap, so that the first waterproofing member (410) and the second waterproofing member (420) can be formed in a closed loop shape without a discontinuous section through the third waterproofing member (430). The first waterproofing space (e.g., the first waterproofing space (401) of FIGS. 4 and 6) sealed by the first waterproofing member (410), the second waterproofing member (420), and the third waterproofing member (430) forming a closed loop shape can secure stable waterproofing and dustproofing performance.

[0094] The third waterproofing member (430) may include a cured in place gasket (CIPG) (e.g., a waterproofing filling member) that has a property of being solidified by natural or external conditions (e.g., heat, ultraviolet rays, moisture, or pressure), including a semi-solid or liquid substance.

[0095] According to one embodiment, the first decorative member (141) may be formed to surround a portion of the main display (240). The decorative member (141) may be inserted into at least a portion of the receiving space (820) (or, the second separation space) between the main display (240) and the first housing (210).

[0096] According to one embodiment, the first housing (210) may include a side surface (213) (or outer surface) facing the outside of the electronic device, a first inner surface (e.g., a surface facing the z-axis) (or first surface) (211) on which the main display panel and the first decorative member (141) are mounted, and a second inner surface (e.g., a surface facing the -z-axis) (or second surface) (212) on which the first waterproof member (410) and the second waterproof member (420) are mounted. The first inner surface (211) may be arranged to face the first decorative member (141). The second inner surface (212) may be arranged to contact the first waterproof member (410) and the second waterproof member (420). The side surface (213) may be arranged perpendicular to the first inner surface (211) and the second inner surface (212).

[0097] The first housing (210) may include a through hole (810) (or, first through hole, filling hole) inclined at a specified angle. The through hole (810) may be formed to be inclined toward the inside of the electronic device from the first inner surface (211) to the second inner surface (212). The central axis (or, depth direction axis) of the through hole (810) may be formed to form an acute angle with the side surface (213). The through hole (810) may be formed to penetrate the first inner surface (211) and the second inner surface (212). The through hole (810) may be connected to a receiving space (820) into which at least a portion of the first decorative member (141) is inserted. The third waterproof member (430) can be filled into the through hole (810) of the first housing (210) while the main display (240) and the sub display (340) are accommodated in the first housing (210). After the third waterproof member (430) is filled into the through hole (810), the decorative member (141) can be assembled into the accommodation space.

[0098] When a straight through hole is formed in the first housing (210) so as to be arranged in a line along the z-axis and a separation space (830) between the first waterproof member (410) and the second waterproof member (420), the entrance of the through hole (810) is blocked by the main display (240), so that the third waterproof member (430) cannot be injected into the through hole (810). According to one embodiment, the separation space (830) between the first waterproof member (410) and the second waterproof member (420) overlaps the main display (240) when viewed in the z-axis and / or -z-axis direction (or when viewed from above the main display (240), and the entrance of the through hole (810) (or the portion connected to the receiving space (820)) can be formed so as not to overlap with at least a portion of the main display (240) when viewed in the z-axis and / or -z-axis direction. The through hole (810) may be formed to be inclined toward the first decorative member (141) in the space (830) between the first waterproof member (410) and the second waterproof member (420). When the main display (240) and the sub display (340) are assembled to the first housing, the third waterproof member (430) may be filled in the through hole (810) by injecting the third waterproof member through the receiving space (820) connected to the through hole (810).

[0099] FIG. 9 is a drawing showing a method of assembling an electronic device including a third waterproof member of an electronic device according to one embodiment.

[0100] Referring to FIG. 9, a first housing (210) including an inclined through hole (810) may be provided. A main display (240) may be assembled to the first housing (210). A first waterproof member (410) and a second waterproof member (420) may be formed on a second inner surface (212) of the first housing (210). A sub-display (340) may be assembled to the first housing (210) via the first waterproof member (410) and the second waterproof member (420).

[0101] A dispenser (910) can be aligned in the receiving space (820) between the main display (240) and the first housing (210). After the dispenser (910) enters the receiving space (820), the third waterproofing member (430) discharged through the dispenser (910) can be injected into the through hole (810) connected to the receiving space (820). After the third waterproofing member (430) filled in the through hole (810) is naturally cured at room temperature, the first decorative member (141) can be assembled in the receiving space (820).

[0102] Fig. 10 is a drawing showing an electronic device according to an embodiment having a speaker hole and a through hole. In Fig. 10, the drawing <1001> is an enlarged perspective view of the area where the speaker holes and through holes of the electronic device are arranged, and the drawing <1002> is a drawing <1001> This is a drawing cut along the line "D1-D1'" in the drawing. <1003> Silver drawing <1001> This is a drawing cut along the line "D1-D1'".

[0103] Referring to FIG. 10, an electronic device according to one embodiment may include a plurality of speaker holes (1020) and at least one through hole (1010) arranged adjacent to at least one of the plurality of speaker holes (1020).

[0104] A through hole (1010) may be formed in a part of the main display (240) and the first housing (210) in which the sub display (340) is accommodated. The through hole (810) may be formed to penetrate the second inner surface (212) of the first housing (210) and the side surface (213) of the first housing (210).

[0105] The through hole (1010) may include a first hole (1011) and a second hole (1012) that are connected to each other. The first hole (1011) may be formed to penetrate the second inner surface (212) of the first housing (210) and may be connected to a space between the first waterproof member (410) and the second waterproof member (420). The second hole (1012) may be formed to penetrate the side surface (213) of the first housing (210) and may be connected to the exterior of the electronic device. The first hole (1011) may be formed to be inclined at a specified angle or may be formed perpendicular to the second hole (1012). The second hole (1012) may have a depth in a direction parallel to at least a portion of the speaker hole (1020). For example, the first hole (1011) may be formed to be inclined at a specified angle, and the second hole (1012) may be formed parallel to the sub-display (340) between the main display (240) and the sub-display (340). For example, the first hole (1011) may be formed in a straight shape to be arranged in line with the separation space (830) between the first waterproof member (410) and the second waterproof member (420), and the second hole (1012) may be formed perpendicular to the first hole (1011). For example, the first hole (1011) may be formed in a straight shape to be arranged in line with the separation space (830) between the first waterproof member (410) and the second waterproof member (420), and the second hole (1012) may be formed to be inclined to form an obtuse angle with the first hole (1011). For example, the first hole (1011) may be formed to be inclined at a specified first angle, and the second hole (1012) may be formed to be inclined at a specified second angle. The first hole (1011) may be formed to be inclined to form an acute angle, which is a first angle, with the sub-display (340), and the second hole (1012) may be formed to be inclined with respect to the sub-display (340) at a second angle that is smaller than the first angle.

[0106] According to one embodiment, the first hole (1011) formed to be inclined at a specified angle may be formed to be inclined so as to get closer to the side surface (213) of the first housing (210) as it goes from the second inner surface (212) toward the second hole (1012). The first hole (1011) formed to be inclined at a specified angle may be formed to be inclined toward the inside of the electronic device as it goes from the second hole (1012) toward the second inner surface (212). The through hole (1010) may be separated from and not connected to the receiving space (820) into which at least a portion of the first decorative member (141) is inserted. The third waterproof member (430) may be filled into the through hole (1010) of the first housing (210) in a state in which the main display (240) and the sub-display (340) are accommodated in the first housing (210). After the third waterproofing member (430) is filled in the through hole (1010), the decorative member (141) can be assembled in the receiving space (820).

[0107] According to one embodiment, the separation space (830) between the first waterproof member (410) and the second waterproof member (420) and the first hole (1011) may be formed to overlap the main display (240) when viewed from above, and the second hole (1012) may be formed to not overlap at least a portion of the main display (240) when viewed from above. The through hole (1010) may be formed to be inclined toward the side surface (213) of the first housing (210) in the separation space (830) between the first waterproof member (410) and the second waterproof member (420). With the main display (240) and sub-display (340) assembled in the first housing (210), the third waterproofing member (430) can be filled in the first hole (1011) and the second hole (1012) by injecting the third waterproofing member through the second hole (1012).

[0108] FIG. 11 is a drawing showing a method of assembling an electronic device including a third waterproof member of an electronic device according to one embodiment.

[0109] Referring to FIG. 11, a first housing (210) having a through hole formed therein, including a first hole (1011) and a second hole (1012), may be provided. A main display (240) may be assembled to the first housing (210). A first waterproof member (410) and a second waterproof member (420) may be formed on a second inner surface (212) of the first housing (210). A sub-display (340) may be assembled to the first housing (210) through the first waterproof member (410) and the second waterproof member (420).

[0110] A dispenser (910) can be aligned in the second hole (1012). After the dispenser (910) enters the second hole (1012), the third waterproofing member (430) discharged through the dispenser (910) can be injected into the first hole (1011) connected to the second hole (1012). After the third waterproofing member (430) filled in the first hole (1011) is naturally cured at room temperature, the first decorative member (141) can be assembled in the receiving space (820).

[0111] Fig. 12 is a drawing showing an electronic device including a bonding member according to one embodiment. In Fig. 12, the drawing <1201> is a drawing showing a state before the first deco member is mounted on the electronic device shown in FIGS. 8A to 8C, and the drawing <1202> is a drawing showing a state after the first deco member is mounted on the electronic device illustrated in FIGS. 8a to 8c.

[0112] Referring to FIG. 12, an electronic device according to an embodiment may include a main display (240), a sub-display (340), a first housing (210), a plurality of waterproof members (410, 420, 430), a bonding member (1210), and a first decorative member (141). At least some configurations of the electronic device of FIG. 12 may be applied to at least some configurations of the electronic devices of FIGS. 1 to 9. For example, the main display (240), the sub-display (340), the first housing (210), the plurality of waterproof members (410, 420, 430), and the first decorative member (141) of FIG. 12 may be applied to at least some configurations of the electronic devices of FIGS. 1 to 9.

[0113] The bonding member (1210) may be accommodated within the through-hole (810) of the first housing (210). The bonding member (1210) may provide a bonding force (or, binding force) of a specified level so as to prevent the third waterproofing member (430) from being detached or leaked from the through-hole (810) before the third waterproofing member (430) is cured at room temperature. The bonding member (1210) may be filled within the through-hole (810) so as to contact one surface (e.g., a surface facing the z-axis) of the third waterproofing member (430). Since the bonding member (1210) may bind the uncured third waterproofing member (430) within the through-hole (810), the next assembly process (e.g., the assembly process of the first decorative member (141)) may be performed before the third waterproofing member (430) is cured at room temperature.

[0114] The bonding member (1210) may be formed of a material having a predetermined viscoelasticity and / or fluidity. For example, the bonding member (1210) may include a resin material (e.g., silicone or resin) in the form of a gel or sol. For example, the bonding member (1210) may be formed by filling a liquid material having a predetermined viscosity into the through hole (810) and then curing it (e.g., UV curing or thermal curing). The bonding member (1210) may be formed of a material having a faster curing speed than the third waterproofing member (430).

[0115] FIG. 13 is a drawing illustrating an electronic device including a bonding member according to one embodiment. FIG. 13 is a drawing illustrating the electronic device of FIG. 10 including a bonding member.

[0116] Referring to FIG. 13, an electronic device according to an embodiment may include a main display (240), a sub-display (340), a first housing (210), a plurality of waterproof members (410, 420, 430), a bonding member (1210), and a first decorative member (141). At least some configurations of the electronic device of FIG. 13 may apply to at least some configurations of the electronic devices of FIGS. 1 to 8B, 10, and 11. For example, the main display (240), the sub-display (340), the first housing (210), the plurality of waterproof members (410, 420, 430), and the first decorative member (141) of FIG. 13 may apply to at least some configurations of the electronic devices of FIGS. 1 to 8B, 10, and 11. The description of the bonding member of FIG. 13 may apply to the description of the bonding member of FIG. 12.

[0117] The bonding member (1210) can be accommodated within the through hole (1010) of the first housing (210). For example, at least a portion of the bonding member (1210) can be accommodated within the second hole (1012) included in the through hole (1010), and at least a portion of the third waterproofing member (430) can be accommodated within the first hole (1011).

[0118] The bonding member (1210) can provide a bonding force (or, restraining force) of a specified level to prevent the third waterproofing member (430) from being detached or leaked from the through-hole (1010) before the third waterproofing member (430) is cured at room temperature. The bonding member (1210) can be filled in the through-hole (1010) so as to be in contact with one surface (e.g., the surface facing the -y axis) of the third waterproofing member (430). Since the bonding member (1210) can restrain the uncured third waterproofing member (430) within the through-hole (1010), the next assembly process (e.g., the assembly process of the first decorative member (141)) can be performed before the third waterproofing member (430) is cured at room temperature.

[0119] FIG. 14 is a drawing showing an electronic device according to one embodiment including a second through hole.

[0120] Referring to FIG. 14, an electronic device according to an embodiment may include a main display (240), a sub-display (340), a first housing (210), a plurality of waterproof members (410, 420, 430), a first decorative member (141), a first through hole (810), and a second through hole (1410) (or a hardening hole). At least some configurations of the electronic device of FIG. 14 may apply at least some configurations of the electronic devices of FIGS. 1 to 9 and FIG. 12. For example, the main display (240), the sub-display (340), the first housing (210), the plurality of waterproof members (410, 420, 430), the first decorative member (141), and the first through hole (810) of FIG. 14 may apply at least some configurations of the electronic devices of FIGS. 1 to 9 and FIG. 12.

[0121] The second through hole (1410) may be formed to penetrate the inclined surface (215) formed by the first through hole (810) and the third inner surface (214) on which the main display (240) is mounted. The second through hole (1410) may be formed to have a depth in a direction parallel to the side surface (213) of the first housing (210). The central axis of the second through hole (1410) may be formed to be parallel to the side surface (213) of the first housing (210). The second through hole (1410) may be formed to be connected to at least a portion of the first through hole (810).

[0122] The second through hole (1410) may be arranged to overlap the main display (240) when viewed from the z-axis and / or -z-axis direction (or when viewed from above the main display (240)). At least some of the components included in the main display (240) formed of an opaque material (e.g., metal) may have a penetration hole (1420) formed in an area overlapping the second through hole (1410).

[0123] Light (e.g., ultraviolet (UV)) can be irradiated to the third waterproof member (430) accommodated inside the first housing (210) through the penetration hole (1420) and the second through hole (1410). The third waterproof member (430) can be cured at a faster rate during photocuring than during room temperature curing.

[0124] FIG. 15 is a drawing showing an electronic device according to one embodiment including a second through hole.

[0125] Referring to FIG. 15, an electronic device according to an embodiment may include a main display (240), a sub-display (340), a first housing (210), a plurality of waterproof members (410, 420, 430), a first decorative member (141), a first through hole (810), and a second through hole (1410) (or a hardening hole). At least some configurations of the electronic device of FIG. 15 may apply at least some configurations of the electronic devices of FIGS. 8b, 10, 11, and 13. For example, the main display (240), the sub-display (340), the first housing (210), the plurality of waterproof members (410, 420, 430), and the first decorative member (141) of FIG. 15 may apply at least some configurations of the electronic devices of FIGS. 8b, 10, 11, and 13.

[0126] The second through hole (1410) may be formed to penetrate the inclined surface (215) formed by the first through hole (810) and the third inner surface (214) on which the main display (240) is mounted. The second through hole (1410) may be formed to have a depth parallel to the side surface (213) of the first housing (210) and perpendicular to the second hole (1012). The central axis of the second through hole (1410) may be formed parallel to the side surface (213) of the first housing (210). The second through hole (1410) may be formed to be connected to at least a portion of the first through hole (810).

[0127] The second through hole (1410) may be arranged to overlap the main display (240) when viewed from the z-axis and / or -z-axis direction (or when viewed from above the main display (240)). At least some of the components included in the main display (240) formed of an opaque material (e.g., metal) may have a penetration hole (1420) formed in an area overlapping the second through hole (1410).

[0128] Light (e.g., ultraviolet (UV)) can be irradiated to the third waterproof member (430) accommodated inside the first housing (210) through the penetration hole (1420) and the second through hole (1410). The third waterproof member (430) can be cured at a faster rate during photocuring than during room temperature curing.

[0129] FIG. 16a is an exploded perspective view of a main display according to one embodiment, and FIG. 16b is a drawing specifically illustrating some of the layers illustrated in FIG. 16a.

[0130] Referring to FIG. 16a and FIG. 16b, the main display (240) (e.g., the main display (240) of FIG. 8b, FIG. 8c, FIG. 9, FIG. 10, FIG. 11, FIG. 12, FIG. 13, FIG. 14, and FIG. 15) may include a main window (1630), a main display panel (1624) (or a first display panel) sequentially arranged on the back surface (e.g., the surface facing the -z axis) of the main window (1630), a polarizing plate (or polarizing film, polarizing layer) (polarizer) (1623), a barrier layer (1622), a first metal sheet (1610), at least one functional member (1621), and a second metal sheet (1600). The main display (240) illustrated in FIG. 16A is merely an example for explaining one embodiment, and not all components included in the main display (240) illustrated in FIG. 16A may be essential components. Accordingly, the main display (240) may be configured by omitting some of the components illustrated in FIG. 16A or adding some of them.

[0131] The main window (1630) may be exposed to the outside at least in part through the front surface (e.g., the surface facing the z-axis) of the electronic device. The main window (1630) may be formed of at least one layer including a glass layer (1631), or may be arranged as multiple layers including a glass layer (1631) and a polymer layer (1632). For example, the main window (1630) may include a polymer layer (1632) and a glass layer (1631) arranged on a back surface of the polymer layer (1632). For example, the glass layer (1631) may include ultra-thin glass (UTG). The polymer layer (1632) may include polyethylene terephthalate (PET) and / or polyimide (PI).

[0132] The main display panel (1624) may include a plurality of pixels for displaying an image. The main display panel (1624) may include an organic light emitting diodes (OLED) panel, a liquid crystal display (LCD), or a quantum dot light-emitting diodes (QLED) panel. The main display panel (1624) may include a touch sensor on which electrodes are arranged for receiving touch input, fingerprint recognition, or pen input. According to one embodiment, the display panel (1624) and the polarizing plate (1623) may be formed integrally.

[0133] The barrier layer (1622) may be disposed under the display panel (1624). The barrier layer (1622) may provide a dark background to ensure visibility of the display panel (1624) and may be formed of a buffering material for buffering. In one embodiment, the barrier layer (1622) may be disposed under the display panel (1624), the polarizing plate (1623), or / and the first metal sheet (1610).

[0134] The first metal sheet (1610) may be disposed on the back surface of the main display panel (1624). The first metal sheet (1610) may be formed of a metal material having rigid properties. For example, the first metal sheet (1610) may be formed of at least one layer structure including SUS (steel use stainless) (e.g., STS (stainless steel)), Cu, Al, or / and metal CLAD (e.g., a laminated member in which SUS and Al are alternately disposed).

[0135] The first metal sheet (1610) may include a first planar region (1611), a second planar region (1612), and a bending region (1613) (or, a flexible region, a deformable region). The first planar region (1611) may correspond to a first housing (e.g., the first housing (210) of FIGS. 1 to 15) and / or a sub-display (e.g., the sub-display (340) of FIGS. 1 to 15). The second planar region (1612) may correspond to a second housing (e.g., the second housing (220) of FIGS. 1 to 4).

[0136] The bending region (1613) may be arranged between the first flat region (1611) and the second flat region (1612). The bending region (1613) may be an region that is relatively easy to deform compared to the first flat region (1611) and the second flat region (1612). The bending region (1613) may be an region corresponding to a portion where the main display panel (1624) is deformed (e.g., a portion between the first housing and the second housing). A plurality of openings (1614) arranged at a specified interval may be formed in the bending region (1613). The deformation characteristics of the first metal sheet (1610) may be determined by adjusting at least one of the size, shape, arrangement, or density of the plurality of openings (1614). The bending region (1613) may have, for example, a lattice shape due to the plurality of openings (1614). The banding region (1613) may have relatively flexible characteristics compared to the first planar region (1611) and the second planar region (1612) due to the multiple openings (1614).

[0137] At least one functional member (1621) may be disposed between the first metal sheet (1610) and the second metal sheet (1600), or / and between the barrier layer (1622) and the first metal sheet (1610). The at least one functional member (1621) may include a graphite sheet for heat dissipation, a sheet for bubble prevention, an added display, a force touch FPCB, a fingerprint sensor FPCB, a communication antenna radiator, or a conductive / non-conductive tape. The functional member (1621) including the sheet for bubble prevention may be formed of, for example, thermoplastic polyurethane (TPU). For example, if the functional member (1621) is not deformable (e.g., bending), the functional member (1621) may be disposed individually in each of the first housing and the second housing. For example, if the functional member (1621) is deformable, the functional member (1621) can be positioned from the first housing to at least a portion of the second housing via a hinge structure (e.g., the hinge structure (202) of FIG. 3).

[0138] A second metal sheet (1600) may be disposed below a first metal sheet (1610). The second metal sheet (1600) may include a first sub-sheet layer (1601) disposed in the first housing, and a second sub-sheet layer (1602) disposed in the second housing. The first sub-sheet layer (1601) may overlap a first planar area (1611) of the first metal sheet (1610) when viewed in the z-axis and / or -z-axis direction (or when the main display (240) is viewed from above). The second sub-sheet layer (1602) may overlap a second planar area (1612) of the first metal sheet (1610) when viewed in the z-axis and / or -z-axis direction (or when the main display (240) is viewed from above).

[0139] The second metal sheet (1600) provides rigidity for the main display (240) and can be used as a ground to prevent malfunction of the main display (240). The second metal sheet (1600) can be formed of a metal material with high rigidity. For example, the second metal sheet (1600) can be formed of SUS or AL.

[0140] According to one embodiment, at least one layer included in the main display (240) may include a penetration hole (1640) (e.g., penetration hole (1420) of FIG. 15) as illustrated in FIG. 16b. Among the multiple layers included in the main display (240), a layer formed of a metal material may include a penetration hole (1640). For example, at least one of the first metal sheet (1610) and the second metal sheet (1600) formed of a metal material may include a penetration hole (1640).

[0141] According to one embodiment, the penetration hole (1640) may include a plurality of first penetration holes (1641) and a plurality of second penetration holes (1642). The plurality of first penetration holes (1641) may be formed to penetrate a portion of a first metal sheet (1610). The plurality of first penetration holes (1641) may be formed to penetrate a portion of a first flat area (1611) of the first metal sheet (1610). The plurality of first penetration holes (1641) may be formed in an area overlapping at least a portion of a third waterproofing member (e.g., the third waterproofing member (430) of FIGS. 5A to 15). The plurality of second penetration holes (1642) may be formed to penetrate a portion of a second metal sheet (1600). A plurality of second penetration holes (1642) may be formed to penetrate a portion of the first sub-sheet layer (1601) of the second metal sheet (1600). Each of the plurality of second penetration holes (1642) may overlap with each of the plurality of first penetration holes (1641) when viewed in the z-axis and / or -z-axis direction. Each of the plurality of second penetration holes (1642) may be formed in an area that overlaps with at least a portion of the third waterproof member when viewed in the z-axis and / or -z-axis direction.

[0142] According to one embodiment, ultraviolet rays transmitted through the main display (240) through the plurality of first transmission holes (1641) and the plurality of second transmission holes (1642) can be irradiated to the third waterproof member. The third waterproof member cured by ultraviolet rays can be cured faster than room temperature curing.

[0143] FIGS. 17A to 17E are drawings for explaining a method of assembling an electronic device according to one embodiment.

[0144] As illustrated in FIG. 17a, the first housing (210) and the second housing (220) including a plurality of through holes can be combined with a hinge structure (202).

[0145] A main display (240) may be mounted on the first housing (210) and the second housing (220), as illustrated in FIG. 17B. The main display (240) may be positioned on one surface (e.g., a surface facing the z-axis) of each of the first housing (210) and the second housing (220). A tail portion (1702) of a main circuit board included in the main display (240) may be inserted into a hole (1710) formed in each of the first housing (210) and the second housing (220).

[0146] A first battery (254) and a first printed circuit board (264) may be mounted on the other side (e.g., the side facing the -z axis) of the first housing (210), as shown in FIG. 17c. A second battery (252) and a second printed circuit board (262) may be mounted on the other side (e.g., the side facing the -z axis) of the second housing (220).

[0147] A first waterproof structure (400) may be formed on the other surface of the first housing (210), as illustrated in FIG. 17d, and a second waterproof structure (500) may be formed on the other surface of the second housing (220). The first waterproof structure (400) may be formed in an area overlapping the sub-display (340) when viewed in the z-axis or -z-axis direction. A sub-display (240) may be assembled on the other surface of the first housing (210), and a rear cover (290) may be assembled on the other surface of the second housing (220).

[0148] As illustrated in FIG. 17e, the third waterproof member (430) is injected through the accommodation space between the main display (240) and the first housing (210), and then the first decoration member (141) and the second decoration member (142) can be assembled in the accommodation space.

[0149] The electronic device described above is merely an example used to illustrate this document, and it does not necessarily include all the components described above. Therefore, it may be possible to configure an electronic device by omitting or adding some of the components described above.

[0150] One embodiment of the present document is a foldable electronic device, which can support a waterproof and / or dustproof structure of a sub-display.

[0151] Additionally, one embodiment of the present document can reduce the black area of ​​the sub-window by arranging a waterproof structure overlapping the main display between the sub-display and the first housing when viewed in the z-axis or -z-axis direction.

[0152] Additionally, one embodiment of the present document can enlarge a transparent area of ​​a sub-window corresponding to an active area of ​​a sub-display by reducing a black area of ​​the sub-window.

[0153] Additionally, one embodiment of the present document can reduce the size and weight of a sub-window by reducing the black area of ​​the sub-window.

[0154] A foldable electronic device according to an embodiment disclosed in the present document comprises: a first housing (210) including a through hole (810, 1010) formed at least in part to be inclined; a second housing (220) rotatably connected to the first housing (210); a first display (240) disposed on a first surface (211) of the first housing (210); a second display (340) disposed on a second surface (212) of the first housing (210); a first waterproof member (410) disposed between the second surface (212) of the first housing (210) and the second display (340) and overlapping at least a portion of the through hole (810, 1010) when the first display (240) is viewed from above (or when viewed in the z-axis or -z-axis direction); A second waterproof member (420) is disposed between the second surface (212) of the first housing (210) and the second display (340) to be spaced apart from the first waterproof member (410) and overlaps at least a portion of the through hole (810, 1010) when the first display (240) is viewed from above (or when viewed in the z-axis or -z-axis direction); and a third waterproof member (430) is filled in the through hole (810, 1010) to connect the first waterproof member (410) and the second waterproof member (420).

[0155] According to one embodiment, at least a portion of at least one of the first waterproof member (410) and the second waterproof member (420) may overlap the first display (240) with the first housing (210) interposed therebetween when the first display (240) is viewed from above (or when viewed in the z-axis or -z-axis direction).

[0156] According to one embodiment, the first housing (210) may include a side surface (213) formed between the first surface (211) facing a first direction and the second surface (212) facing a second direction opposite to the first direction.

[0157] According to one embodiment, at least a portion of the through hole (810, 1010) may be formed to be inclined toward the side surface (213) as it goes from the second surface (212) to the first surface (211).

[0158] According to one embodiment, the central axis of the through hole (810, 1010) may form an acute angle with the side surface (213) of the first housing (210).

[0159] According to one embodiment, the through hole (810, 1010) may be formed to penetrate the first surface (211) and the second surface (212) of the first housing (210).

[0160] According to one embodiment, the through hole (810, 1010) may include a first hole (1011) that is formed to be inclined so as to penetrate the second surface (212) of the first housing (210); and a second hole (1012) that is connected to the first hole (1011) and penetrates the side surface (213) of the first housing.

[0161] According to one embodiment, the electronic device further includes a plurality of speaker holes (1020) penetrating a side surface of the first housing (210), wherein the penetrating hole (1010) may be positioned adjacent to at least one of the plurality of speaker holes (1020).

[0162] According to one embodiment, the electronic device may further include a bonding member (1210) disposed within the through hole (810, 1010) and having a faster curing speed than the third waterproofing member.

[0163] According to one embodiment, the third waterproofing member (430) may include one surface that contacts the bonding member (1210) and the other surface that contacts the first waterproofing member (410) and the second waterproofing member (420).

[0164] According to one embodiment, the electronic device may further include a decorative member (141) arranged between the first display (240) and the first housing (210) to surround an edge of the first display (240) and cover at least a portion of the through hole (810).

[0165] According to one embodiment, the through hole (810) may be connected to a receiving space (820) in which the decorative member (141) is received.

[0166] According to one embodiment, the electronic device may further include a second through hole (1410) that penetrates a portion of the first housing (210) disposed between the third waterproof member (430) and the first display (240) and is connected to the through hole (810, 1010).

[0167] According to one embodiment, the central axis of the second through hole (1410) may be arranged parallel to the side surface (213) of the first housing (210).

[0168] According to one embodiment, the first display (240) may include a first display panel (1623) and at least one plate member (1610, 1601) formed of an opaque material and disposed between the first display panel and the first housing.

[0169] According to one embodiment, the at least one first plate member (1610, 1601) may further include a penetration hole (1640) that overlaps the second penetration hole (1410) when the first display (240) is viewed from above (or when viewed in the z-axis or -z-axis direction).

[0170] According to one embodiment, the electronic device further includes a hinge structure (202) connecting the first housing (210) and the second housing (220), and the at least one plate member (1610, 1601) may further include a first metal sheet (1610) including a plurality of openings (1614) in an area corresponding to the hinge structure (202); and a second metal sheet (1601) disposed between the first metal sheet (1610) and the first housing (210).

[0171] According to one embodiment, when the first display (240) is viewed from above (or when viewed in the z-axis or -z-axis direction), the transmission hole (1641) formed in the first metal sheet (1610) may overlap with the transmission hole (1642) formed in the second metal sheet (1601).

[0172] According to one embodiment, the second display (340) includes a second display panel (330) and a transparent area (281) and an opaque area (282), and may further include a window (280) disposed on the front of the second display panel (330).

[0173] According to an example, when the first display (240) is viewed from above (or when viewed in the z-axis or -z-axis direction), at least a portion of the second waterproof member (420) may overlap the transparent area (281) with the second display panel (330) therebetween.

[0174] A foldable electronic device according to an embodiment disclosed in the present document may include a first housing (210) including a through hole (810, 1010) at least partially formed to be inclined; a second housing (220) rotatably connected to the first housing (210); a display (340) disposed in the first housing (210); and a waterproof structure (400) disposed between the first housing (210) and the display (340), wherein the waterproof structure (400) may include a first waterproof member (410) in an open loop shape; a second waterproof member (420) in an open loop shape disposed in an open portion of the first waterproof member (410); and a third waterproof member (430) filled in the through hole (810, 1010) and connecting the first waterproof member (410) and the second waterproof member (420).

[0175] According to one embodiment, the first housing (210) includes a side surface (213) formed between a first surface (211) facing a first direction and a second surface (212) facing a second direction opposite to the first direction, and at least a portion of the through hole (810, 1010) may be formed to be inclined toward the side surface (213) from the second surface (212) to the first surface (211).

[0176] According to one embodiment, the through hole (810) may be formed to penetrate the first surface (211) and the second surface (212) of the first housing.

[0177] According to one embodiment, the through hole (1010) may include a first hole (1011) that is formed to be inclined so as to penetrate the second surface (212) of the first housing (210); and a second hole (1012) that is connected to the first hole (1011) and penetrates the side surface (213) of the first housing.

[0178] According to one embodiment, a bonding member (1210) disposed within the through hole (810, 1010) and having a faster curing speed than the third waterproofing member (430) may be further included.

[0179] An electronic device according to an embodiment disclosed in the present document may include a housing (210) including a through hole (810, 1010) formed at least in part to be inclined; a display (340) disposed in the housing (210); and a waterproof structure (400) disposed between the housing (210) and the display (340), wherein the waterproof structure (400) may include a first waterproof member (410) in an open loop shape; a second waterproof member (420) in an open loop shape disposed in an open portion of the first waterproof member (410); and a third waterproof member (430) filled in the through hole (810, 1010) and connecting between the first waterproof member (410) and the second waterproof member (420).

[0180] The embodiments of this document and the terminology used herein are not intended to limit the technology described in this document to a specific embodiment, but should be understood to include various modifications, equivalents, and / or substitutes of the embodiment. In connection with the description of the drawings, similar reference numerals may be used for similar components. The singular expressions may include plural expressions unless the context clearly indicates otherwise. In this document, expressions such as "A or B," "at least one of A and / or B," "A, B, or C," or "at least one of A, B, and / or C" can include all possible combinations of the items listed together. Expressions such as "first," "second," "first," or "second," may modify the corresponding components regardless of order or importance, and are only used to distinguish one component from another, but do not limit the corresponding components. When it is said that a component (e.g., a first component) is “(functionally or communicatively) connected” or “connected” to another component (e.g., a second component), the component may be directly connected to the other component, or may be connected via another component (e.g., a third component).

[0181] In this document, "adapted to or configured to" may be used interchangeably with, for example, "suitable for," "capable of," "modified to," "made to," "capable of," or "designed to," for example, hardware-wise or software-wise. In some contexts, the phrase "a device configured to" may mean that the device is "capable of" doing something together with other devices or components. For example, the phrase "a processor configured (or adapted) to perform A, B, and C" may mean a dedicated processor (e.g., an embedded processor) for performing those operations, or a general-purpose processor (e.g., a CPU or AP) that can perform those operations by executing one or more programs stored in a memory device (e.g., a memory).

[0182] The term "module" as used in this document includes a unit composed of hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A "module" may be an integral component or a minimum unit or part thereof that performs one or more functions. A "module" may be implemented mechanically or electronically, and may include, for example, an application-specific integrated circuit (ASIC) chip, field-programmable gate array (FPGA), or programmable logic device, known or to be developed in the future, that performs certain operations.

[0183] At least a part of a device (e.g., modules or functions thereof) or a method (e.g., operations) according to an embodiment may be implemented as instructions stored in a computer-readable storage medium (e.g., memory) in the form of a program module. When the instructions are executed by a processor (e.g., a processor), the processor may perform a function corresponding to the instructions. The computer-readable recording medium may include a hard disk, a floppy disk, a magnetic medium (e.g., a magnetic tape), an optical recording medium (e.g., a CD-ROM, a DVD, a magneto-optical medium (e.g., a floptical disk), an internal memory, etc. The instructions may include code generated by a compiler or code executable by an interpreter.

[0184] Each component (e.g., a module or a program module) according to an embodiment may be composed of one or more entities, and some of the aforementioned sub-components may be omitted, or other sub-components may be further included. Alternatively or additionally, some components (e.g., a module or a program module) may be integrated into a single entity, which may perform the same or similar functions as those performed by each of the respective components prior to integration. Operations performed by a module, program module, or other component according to an embodiment may be executed sequentially, in parallel, iteratively, or heuristically, or at least some operations may be executed in a different order, omitted, or other operations may be added.

Claims

1. In a foldable electronic device, A first housing (210) including at least a portion of a through hole (810, 1010) formed at an angle; A second housing (220) rotatably connected to the first housing (210); A first display (240) arranged on the first surface (211) of the first housing (210); A second display (340) arranged on the second surface (212) of the first housing (210); A first waterproof member (410) disposed between the second surface (212) of the first housing (210) and the second display (340) and overlapping at least a portion of the through hole (810, 1010); A second waterproof member (420) positioned so as to be spaced apart from the first waterproof member (410) between the second surface (212) of the first housing (210) and the second display (340) and overlapping at least a portion of the through hole (810, 1010); A foldable electronic device including a third waterproof member (430) filled in the through hole (810, 1010) to connect the first waterproof member (410) and the second waterproof member (420).

2. In paragraph 1, An electronic device in which at least a portion of at least one of the first waterproof member (410) and the second waterproof member (420) overlaps the first display (240) with the first housing (210) therebetween.

3. In paragraph 1 or 2, The first housing (210) includes a side surface (213) formed between the first surface (211) facing in the first direction and the second surface (212) facing in the second direction opposite to the first direction. An electronic device in which at least a portion of the above through-hole (810, 1010) is formed to slope toward the side surface (213) as it goes from the second surface (212) to the first surface (211).

4. In paragraph 3, An electronic device in which the central axis of the above through hole (810, 1010) forms an acute angle with the side surface (213) of the first housing (210).

5. In paragraph 3, An electronic device in which the above through-hole (810, 1010) is formed to penetrate the first surface (211) and the second surface (212) of the first housing (210).

6. In paragraph 3, The above through hole (810, 1010) A first hole (1011) formed obliquely so as to penetrate the second surface (212) of the first housing (210); An electronic device including a second hole (1012) connected to the first hole (1011) and penetrating the side surface (213) of the first housing.

7. In paragraph 6, It further includes a plurality of speaker holes (1020) penetrating the side of the first housing (210), An electronic device in which the above through-hole (1010) is positioned adjacent to at least one of the plurality of speaker holes (1020).

8. In paragraph 1, It further includes a bonding member (1210) positioned within the above through hole (810, 1010) and having a faster curing speed than the third waterproofing member. The above third waterproofing member (430) is One side in contact with the above bonding member (1210); An electronic device including a surface in contact with the first waterproof member (410) and the second waterproof member (420).

9. In paragraph 1, An electronic device further comprising a decorative member (141) arranged between the first display (240) and the first housing (210) to surround an edge of the first display (240) and cover at least a portion of the through hole (810).

10. In paragraph 9, The above through hole (810) is an electronic device connected to a receiving space (820) in which the above decorative member (141) is received.

11. In paragraph 1, An electronic device further comprising a second through-hole (1410) penetrating a portion of the first housing (210) and positioned between the third waterproof member (430) and the first display (240) and connected to the through-hole (810, 1010).

12. In paragraph 11, An electronic device in which the central axis of the second through hole (1410) is arranged parallel to the side surface (213) of the first housing (210).

13. In clause 11 or 12, The above first display (240) is, A first display panel (1623); It comprises at least one plate member (1610, 1601) formed of an opaque material and disposed between the first display panel and the first housing, An electronic device wherein at least one of the first plate members (1610, 1601) further includes a penetration hole (1640) overlapping the second through hole (1410).

14. In paragraph 13, It further includes a hinge structure (202) connecting the first housing (210) and the second housing (220), At least one plate member1610,1601) A first metal sheet (1610) including a plurality of openings (1614) in an area corresponding to the hinge structure (202); It further includes a second metal sheet (1601) arranged between the first metal sheet (1610) and the first housing (210), An electronic device in which the penetration hole (1641) formed in the first metal sheet (1610) overlaps the penetration hole (1642) formed in the second metal sheet (1601).

15. In paragraph 1 The above second display (340) The second display panel (330) and It further includes a window (280) that includes a transparent area (281) and an opaque area (282) and is arranged on the front side of the second display panel (330). An electronic device in which at least a portion of the second waterproof member (420) overlaps the transparent area (281) with the second display panel (330) interposed therebetween.

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