Foldable electronic device

Abstract

According to an embodiment of the present disclosure, a foldable electronic device includes: a foldable housing including a first housing, a second housing, and a hinge portion connecting the first housing and the second housing; and a flexible printed circuit board extending across the hinge portion, where the hinge portion includes a first plate including a first end portion including a first curved surface formed to support the flexible printed circuit board when the foldable case is folded, and a second plate including a second end portion including a second curved surface formed to support the flexible printed circuit board when the foldable case is folded. The second curve shape is to support the flexible printed circuit board when the foldable case is folded.

Description

Technical Field

[0001] The present disclosure relates to a foldable electronic device. Background Art

[0002] A foldable electronic device may include a flexible printed circuit board extending across a hinge.

[0003] For the purpose of helping to understand the present disclosure, the above information may be provided as related art. It is not required to claim or determine whether any of the foregoing can be applied as prior art related to the present disclosure. Summary of the Invention

[0004] Technical Problem

[0005] When a foldable electronic device is switched from an unfolded state to a folded state, the hinge may cause damage or cracks in the flexible printed circuit board disposed across the hinge.

[0006] Various embodiments of the present disclosure may provide a foldable electronic device in which damage to the flexible printed circuit board by the hinge is reduced or prevented.

[0007] The technical problems to be solved by the present disclosure are not limited to those described above, and those of ordinary skill in the relevant art to which the present disclosure pertains will understand other technical problems not described above.

[0008] Solution to the Problem

[0009] According to an aspect of the present disclosure, a foldable electronic device includes a foldable housing and a flexible printed circuit board. The foldable housing includes a first housing, a second housing, and a hinge configured to interconnect the first housing and the second housing. The flexible printed circuit board extends across the hinge. The hinge includes a first plate and a second plate. The first plate includes a first end portion, and the first end portion includes a first curved surface configured to support the flexible printed circuit board when the foldable housing is in a folded state. The second plate includes a second end portion, and the second end portion includes a second curved surface configured to support the flexible printed circuit board when the foldable housing is in a folded state.

[0010] In one embodiment, the foldable electronic device further includes a flexible display module disposed in the foldable housing. The flexible display module includes a first display area disposed on the first housing, a second display area disposed on the second housing, and a third display area extending the first display area and the second display area. In the folded state, the first display area and the second display area face each other, and the third display area is bent. The hinge is configured such that in the unfolded state, the first plate and the second plate support the third display area to be flat. In addition, the hinge is configured such that in the folded state, the first plate and the second plate face each other and the third display area is interposed therebetween.

[0011] In one embodiment, the hinge is configured such that in the folded state, the first plate and the second plate are arranged parallel to each other.

[0012] In one embodiment, in the unfolded state of the foldable housing, when viewed in the direction of the folding axis of the foldable housing, the flexible display module is arranged to be flat in a first direction. The hinge is configured such that when the foldable housing is in the unfolded state and viewed in the direction of the folding axis, the first plate and the second plate form an acute angle with respect to a second direction that is perpendicular to the first direction and points from the first display area and the second display area to the third display area. The space between the first plate and the second plate widens in the second direction.

[0013] In one embodiment, the first end portion and the second end portion face each other and are closer to each other in the unfolded state than in the folded state.

[0014] In one embodiment, the flexible printed circuit board includes: a first rigid portion located between the first plate and the first housing; a second rigid portion located between the second plate and the second housing; a first connector electrically connected to a first component located in the first housing; a second connector electrically connected to a second component located in the second housing; a first region extending the first rigid portion and the first connector; a second region extending the second rigid portion and the second connector; and a third region extending the first rigid portion and the second rigid portion and extending across the hinge.

[0015] In one embodiment, the first rigid portion is coupled to the first housing, and the second rigid portion is coupled to the second housing.

[0016] In one embodiment, the first rigid portion is coupled to the first plate, and the second rigid portion is coupled to the second plate.

[0017] In one embodiment, the foldable electronic device further includes: a third plate at least partially located between the first plate and the first housing and coupled to the first plate; and a fourth plate at least partially located between the second plate and the second housing (12) and coupled to the second plate, wherein the first rigid portion is inserted into an opening in the third plate and coupled to the first plate, and wherein the second rigid portion is inserted into an opening in the fourth plate and coupled to the second plate.

[0018] In one embodiment, the first plate and the third plate are coupled by welding, wherein the second plate and the fourth plate are coupled by welding, wherein the first plate is coupled to the first housing by screw fastening, and wherein the second plate is coupled to the second housing by screw fastening.

[0019] In one embodiment, the first end portion is arranged to surround the third end portion of the third plate in the folded state, so as to have a first curved surface configured to support a flexible printed circuit board, wherein the second end portion is arranged to surround the fourth end portion of the fourth plate in the folded state, so as to have a second curved surface configured to support the flexible printed circuit board.

[0020] In one embodiment, the first end portion includes a first bending portion and a second bending portion, and the first bending portion and the second bending portion are bent in opposite directions to have a first curved surface configured to support the flexible printed circuit board in the folded state, wherein the second end portion includes a third bending portion and a fourth bending portion, and the third bending portion and the fourth bending portion are bent in opposite directions to have a second curved surface configured to support the flexible printed circuit board in the folded state.

[0021] In one embodiment, the width of the first end portion or the second end portion extending in the direction of the folding axis is configured to be greater than the width of the third region extending in the direction of the folding axis.

[0022] In one embodiment, the first curved surface and the second curved surface are symmetrically formed with respect to the folding axis of the foldable housing.

[0023] In one embodiment, the hinge includes a first hinge module, a second hinge module, and a third hinge module between the first hinge module and the second hinge module, and wherein the first plate and the second plate are at least located between the first hinge module and the third hinge module.

[0024] Advantages of the Invention

[0025] In the foldable electronic device according to various embodiments of the present disclosure, when the foldable electronic device is switched from the unfolded state to the folded state, damage to the flexible printed circuit board disposed across the hinge can be suppressed or prevented.

[0026] In addition, effects that can be obtained or predicted through various embodiments of the present disclosure can be directly or implicitly disclosed in the detailed description of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] According to the following detailed description in conjunction with the drawings, the above and other aspects, features and advantages of specific embodiments of the present disclosure will become more apparent.

[0028] Figure 1 is a view showing the appearance of a foldable electronic device in an unfolded state according to an embodiment of the present disclosure.

[0029] Figure 2 is a view showing the appearance of a foldable electronic device in a folded state according to an embodiment of the present disclosure.

[0030] Figure 3 is a cross-sectional view taken along line D-D' in Figure 1 a foldable electronic device according to an embodiment of the present disclosure.

[0031] Figure 4 is an exploded perspective view showing a foldable electronic device according to an embodiment of the present disclosure.

[0032] Figure 5 and Figure 6 are views showing a foldable housing in an unfolded state according to an embodiment of the present disclosure.

[0033] Figure 7 is a view showing a part of a foldable electronic device in an unfolded state according to an embodiment of the present disclosure.

[0034] Figure 8 is a cross-sectional view taken along line E-E' in Figure 7 a foldable electronic device in an unfolded state according to an embodiment of the present disclosure.

[0035] Figure 9 is a cross-sectional view of an electronic device according to an embodiment of the present disclosure.

[0036] Figure 10 and Figure 11 are views showing a second plate assembly according to an embodiment of the present disclosure.

[0037] Figure 12 is a cross-sectional view taken along line G-G' in Figure 10 a second plate assembly according to an embodiment of the present disclosure.

[0038] Figure 13 is a view showing a manufacturing process of a second plate assembly according to an embodiment of the present disclosure.

[0039] Figure 14 is a view showing a second plate assembly according to an embodiment of the present disclosure.

[0040] Figure 15 is an exploded perspective view showing a second plate assembly according to an embodiment of the present disclosure.

[0041] Figure 16 is a cross-sectional view taken along line H-H' in Figure 14 a second plate assembly according to an embodiment of the present disclosure.

[0042] Figure 17 is a cross-sectional view taken along line I-I' in Figure 14 a second plate assembly according to an embodiment of the present disclosure.

[0043] Figure 18is a cross-sectional view taken along line D-D' of a part of a foldable electronic device in an unfolded state according to an embodiment of the present disclosure. Figure 1 in the figure.

[0044] Figure 19 is a cross-sectional view taken along line E-E' of a part of a foldable electronic device in an unfolded state according to an embodiment of the present disclosure. Figure 2 in the figure. DETAILED DESCRIPTION

[0045] Hereinafter, various embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0046] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to a particular embodiment, and include various changes, equivalents, or alternatives of the corresponding embodiments. Regarding the description of the drawings, like reference numerals may be used to designate like or related elements. The singular form of a noun corresponding to an item may include one or more of the item, unless the relevant context clearly indicates otherwise. As used herein, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include all possible combinations of the items listed together in the corresponding phrase. As used herein, terms such as "first", "second", "the first", and "the second" may be used simply to distinguish corresponding elements from another element, and do not limit the elements in other respects (e.g., importance or order). It should be understood that if an element (e.g., a first element) is referred to as being "coupled / connected" or "coupled to / connected to" another element (e.g., a second element) with or without the terms "operatively" or "communicatively", it means that the element can be directly or indirectly (e.g., via a third element) coupled / connected to the other element, or directly or indirectly (e.g., via a third element) coupled / connected.

[0047] The term "module" may be the smallest unit of a single integrated component suitable for performing one or more functions or a part thereof.

[0048] Each of the above elements (e.g., a module or a program) may include a single entity or multiple entities. One or more of the above elements may be omitted, or one or more other elements may be added. Alternatively or additionally, multiple elements (e.g., modules or programs) may be integrated into a single element. In this case, according to various embodiments, the integrated element may still perform one or more functions of each of the multiple elements in the same or similar manner as performed by the corresponding elements of the multiple elements before integration.

[0049] Figure 1 is a view showing the appearance of the foldable electronic device 1 in an unfolded state (also referred to as a flat state) according to an embodiment of the present disclosure. Figure 2 is a view showing the appearance of the foldable electronic device 1 in a folded state (also referred to as a folded state) according to an embodiment of the present disclosure. Figure 3 is a cross-sectional view of the foldable electronic device 1 taken along the Figure 1 line D-D' in

[0050] Referring to Figure 1 、 Figure 2 and Figure 3 the foldable electronic device 1 may include a foldable housing 10, a first display module 15, a second display module 16, a first camera module 201, a second camera module 202, a third camera module 203, a fourth camera module 204, a fifth camera module 205, a light emitting module 206, a sensor module 207, a first audio input module (not shown separately), a second audio input module (not shown separately), a third audio input module (not shown separately), a fourth audio input module (not shown separately), a first audio output module (not shown separately), a second audio output module (not shown separately), a third audio output module (not shown separately), a key input module, a first connection terminal 211, and / or a second connection terminal 212.

[0051] The unfolded state and the folded state of the foldable electronic device 1 may be provided substantially by the foldable housing 10. The "unfolded state of the foldable electronic device 1" and the "unfolded state of the foldable housing 10" described herein may be interpreted as being substantially the same. The "folded state of the foldable electronic device 1" and the "folded state of the foldable housing 10" described herein may be interpreted as being substantially the same.

[0052] The foldable housing 10 may include a first housing (also referred to as a first housing portion or a first housing structure) 11, a second housing (also referred to as a second housing portion or a second housing structure) 12, a hinge housing 13, and / or a hinge 14. The first housing 11 and the second housing 12 may be connected to each other via the hinge 14. The first housing 11 and the second housing 12 may rotate relative to the hinge 14. The hinge 14 may include, for example, one or more hinge modules (also referred to as hinge assemblies) (e.g., a first hinge module 141, a second hinge module 142, and / or a third hinge module 143).

[0053] The first display module 15 may be disposed in the foldable housing 10. The first display module 15 may include, for example, a flexible display module (also referred to as a flexible display) or a foldable display module (also referred to as a foldable display) that is deformable in response to a switch between the unfolded state and the folded state of the foldable electronic device 1.

[0054] The first display module 15 may include a display area 150. The display area 150 may include an active area or a screen area capable of displaying an image based on an electrical signal. The display area 150 may include a first display area 151 corresponding to the first housing 11, a second display area 152 corresponding to the second housing 12, and a third display area 153 corresponding to the hinge 14. The third display area 153 may extend the first display area 151 and the second display area 152.

[0055] The first display area 151 may be disposed in the first housing 11. The shape of the first display area 151 may be maintained by the support of the first housing 11. For example, the first display area 151 may be provided (or formed) as substantially flat by being supported by the first housing 11.

[0056] The second display area 152 may be disposed in the second housing 12. The shape of the second display area 152 may be maintained by the support of the second housing 12. For example, the second display area 152 may be provided (or formed) as substantially flat by being supported by the second housing 11.

[0057] The third display area 153 may be located at a position corresponding to the hinge 14. When the foldable electronic device 1 switches between the unfolded state and the folded state, the third display area 153 may be deformed corresponding to the relative position between the first display area 151 and the second display area 152. In the unfolded state of the foldable electronic device 1, the third display area 153 may be arranged to be substantially flat. In the folded state of the foldable electronic device 1, the third display area 153 may be arranged in a curved shape. The unfolded state of the foldable electronic device 1 may be defined or interpreted as a state in which the third display area 153 is arranged to be flat. The folded state of the foldable electronic device 1 may be defined or interpreted as a state in which the third display area 153 is arranged in a curved shape.

[0058] In the unfolded state of the foldable electronic device 1, the first display area 151 and the second display area 152 can form an angle of approximately 180 degrees therebetween, and the display area 150 can be provided (or arranged) in a substantially flat form. Due to the relative positions between the first display area 151 disposed in the first housing 11 and the second display area 152 disposed in the second housing 12 in the unfolded state of the foldable electronic device 1, the third display area 153 can be arranged to be flat. In the unfolded state of the foldable electronic device 1, the third display area 153 can be pulled by the first display area 151 and the second display area 152 from opposite sides, and the pulling force can be provided to reduce damage to the third display area 153 while arranging the display area 153 to be flat. In the unfolded state of the foldable electronic device 1, the third display area 153 can be provided (formed) with an extended width, which can be pulled by the first display area 151 and the second display area 152 and arranged to be flat while reducing stress.

[0059] In the unfolded state of the foldable electronic device 1, the hinge 14 can support the third display area 153 of the first display module 15 to be substantially flat. For example, in the unfolded state of the foldable electronic device 1, the hinge 14 can support the third display area 153 such that the third display area 153 can be arranged to be flat without sagging or with reduced sagging, thereby reducing the crease phenomenon.

[0060] When an external force (e.g., an external pressure such as a touch input using a user's finger or a touch input using a stylus) is applied to the third display area 153 in the unfolded state of the foldable electronic device 1, the hinge 14 can support the third display area 153 by reducing the sagging of the third display area 153 to keep it flat.

[0061] The hinge 14 can be configured to reduce or absorb an external shock to prevent the external shock from affecting the third display area 153 when an external shock is applied due to, for example, a fall when the foldable electronic device 1 is in the unfolded state.

[0062] The foldable electronic device 1 can be implemented as an inward-fold type, in which the display area 150 of the first display module 15 (or the front side of the foldable electronic device 1 where the display area 150 is visually visible) can be folded inward. Figure 2Shows the fully folded state of the foldable electronic device 1, in which the first housing 11 and the second housing 12 are arranged such that the first housing and the second housing are not close to each other. In the fully folded state of the foldable electronic device 1, the first display area 151 and the second display area 152 (or the first front surface area and the second front surface area) can face each other. For example, in the fully folded state of the foldable electronic device 1, the angle between the first housing 11 and the second housing 12 (or the angle between the first display area 151 and the second display area 152 or the angle between the first front surface area and the second front surface area) can be in the range from about 0 degrees to about 10 degrees. In the fully folded state of the foldable electronic device 1, the display area 150 can be substantially invisible.

[0063] Although not shown separately, the foldable electronic device 1 can be placed in an intermediate state between the unfolded state and the fully folded state. For example, in an intermediate state of the foldable electronic device 1 in which the angle between the first housing 11 and the second housing 12 is greater than or equal to a certain angle, the foldable electronic device 1 can be configured to provide a usage environment in which the user can use the display area 150.

[0064] Hereinafter, the "folded state of the foldable electronic device 1" of the present disclosure may refer to the fully folded state opposite to the intermediate state.

[0065] The display area 150 of the first display module 15 can provide (or form) most of the front surface in the exterior of the foldable electronic device 1. The front surface of the foldable electronic device 1 includes a first front surface area provided (or formed) by the first display area 151, a second front surface area provided (or formed) by the second display area 152, and a third front surface area provided (or formed) by the third display area 153. The shown coordinate axes of the foldable electronic device 1 are indicated based on the first housing 11, for example, and the +z-axis direction can be defined or interpreted as the direction toward the substantially flat first front surface area. In the unfolded state of the foldable electronic device 1, the front surface of the foldable electronic device 1 can be provided (or formed) as a substantially flat surface.

[0066] When viewing the foldable electronic device 1 in the unfolded state, the display area 150 of the first display module 15 may be provided (or formed) in a symmetric shape with respect to the center line A of the foldable electronic device 1. The center line A of the foldable electronic device 1 may correspond to the center of the width of the third display area 153 extending from the first boundary between the first display area 151 and the third display area 153 to the second boundary between the second display area 151 and the third display area 153 when viewing the foldable electronic device 1 in the unfolded state. The shown +x coordinate axis may be substantially perpendicular to the center line A, for example, and the shown +y coordinate axis may be substantially parallel to the center line A. For example, in the front surface of the foldable electronic device 1 provided (or formed) by the first display area 151, the first front surface area provided (or formed) by the first display area 151 may be substantially parallel to the x-y plane.

[0067] According to various embodiments, the center line A of the foldable electronic device 1 may be defined or interpreted as the "folding axis" of the foldable housing 10 or the foldable electronic device 1. The folding axis may be substantially provided (or formed) by the hinge 14.

[0068] The third display area 153 arranged in a curved shape in the folded state of the foldable electronic device 1 may be provided in a substantially symmetric shape with respect to the center line A of the foldable electronic device 1.

[0069] When viewing the foldable electronic device 1 in the unfolded state, the display area 150 of the first display module 15 may have a substantially rectangular shape.

[0070] The first housing 11 may include a first frame (also referred to as a first frame structure or a first framework) 111, and a first cover 112 provided on (or coupled to) the first frame 111. The combination of the first frame 111 and the first cover 112 may provide (or form) a first rear surface area and a first side surface area on the outside of the foldable electronic device 1. The first frame 111 may provide (or form) at least a part of the first side surface area of the foldable electronic device 1. The first cover 112 may provide (or form) at least a part of the first rear surface area of the foldable electronic device 1. The first rear surface area may be oriented in a direction opposite to the first front surface area of the foldable electronic device 1 provided (or formed) by the first display area 151 of the first display module 15.

[0071] The first frame 111 may include a first side (also referred to as a first side surface member, a first side surface structure, or a first side surface border structure) 1112. The first side 1112 may surround at least a part of the space between the first display area 151 and the first cover 112, and may provide (or form) at least a part of the first side surface area on the outside of the foldable electronic device 1.

[0072] The first frame 111 may include a first support plate (also referred to as a first support portion or a first support member) 1111 extending from or connected to the first side 1112. The first support plate 1111 may be a structural element located inside the foldable electronic device 1 corresponding to the first housing 11.

[0073] The first frame 111 may be provided (formed) as an integrated or single structure (e.g., a single continuous structure or a complete structure) including the first support plate 1111 and the first side 1112.

[0074] The first frame 111 may be provided as a combination of a conductor (or a metal body) including one or more conductive portions (not shown separately) and a non - conductor (or a non - metal body) including one or more non - conductive portions (not shown separately).

[0075] The first support plate 1111 may be at least partially located between the first display area 151 and the first cover 112. The first display area 151 may be provided on the first support plate 1111, and the first support plate 1111 may support the first display area 151.

[0076] At least some of various electrical components (not shown separately), such as a first printed circuit board or a first battery, may be provided between the first support frame 1111 of the first frame 111 and the first cover 112 on the first frame 111.

[0077] Electrical components (or electronic components) or various members associated with electrical components may be provided on the first frame 111 or the first support plate 1111, or may be supported by the first frame 111 or the first support plate 1111. The first support plate 111 may include, for example, a first support area (also referred to as a first support surface) 1111A and a third support area (also referred to as a third support surface) 1111B. The first support area 1111A may be substantially facing the first display area 151 of the first display module 15. The third support area 1111B may be located on the side opposite to the first support area 1111A. The third support area 1111B may be substantially facing the first cover 112. Electrical components (or electronic components) or various members associated with electrical components may be provided in and / or supported by the first support area 1111A and / or the third support area 1111B.

[0078] The second housing 12 may include a second frame (also referred to as a second frame structure or second framework) 121, and / or a second cover 122 disposed on the second frame 121. The combination of the second frame 121 and the second cover 122 may provide (or form) a second rear surface area and a second side surface area on the exterior of the foldable electronic device 1. The second frame 121 may provide (or form) at least a portion of the second side surface area of the foldable electronic device 1. The second cover 122 may provide (or form) at least a portion of the second rear surface area of the foldable electronic device 1. The second rear surface area may be oriented in a direction opposite to that of the second front surface area of the foldable electronic device 1 provided (or formed) by the second display area 152.

[0079] The second frame 121 may include a second side (also referred to as a second side surface member, second side surface structure, or second side surface border structure) 1212. The second side 1212 may surround at least a portion of the space between the second display area 152 and the second cover 122, and may provide (or form) at least a portion of the second side surface area on the exterior of the foldable electronic device 1.

[0080] The second frame 121 may include a second support plate (also referred to as a second support portion or second support member) 1211 extending from or connected to the second side 1212. The second support plate 1211 may be a structural element located inside the foldable electronic device 1 corresponding to the first housing 12.

[0081] The second frame 121 may be provided (formed) as an integrated or single structure (e.g., a single continuous structure or a complete structure) including the second support plate 1211 and the second side 1212.

[0082] The second frame 121 may be provided as a combination of a conductor (or metal body) including one or more conductive portions (not shown separately) and a non - conductor (or non - metal body) including one or more non - conductive portions (not shown separately).

[0083] The second support plate 1211 may be at least partially located between the second display area 152 and the second cover 122. The second display area 152 may be disposed on the second support plate 1211, and the second support plate 1211 may support the second display area 152.

[0084] At least some of various electrical components (not shown separately), such as a second printed circuit board or a second battery, may be disposed on the second support frame 1211 of the second frame 121 between the second frame 121 and the second cover 122.

[0085] Electrical components (or electronic components) or various components associated with the electrical components can be disposed on the second frame 121 or the second support plate 1211, or can be supported by the second frame 121 or the second support plate 1211. The second support plate 121 may include, for example, a second support area (also referred to as a second support surface) 1211A and a fourth support area (also referred to as a fourth support surface) 1211B. The second support area 1211A may be substantially facing the second display area 152 of the first display module 15. The fourth support area 1211B may be located on the side opposite to the second support area 1211A. The fourth support area 1211B may be substantially facing the second cover 122. Electrical components (or electronic components) or various components associated with the electrical components can be disposed in the second support area 1211A and / or the fourth support area 1211B, or can be supported by the second support area 1211A and / or the fourth support area 1211B.

[0086] The first side 1112 of the first frame 111 may include a first side surface portion B1, a second side surface portion B2, a third side surface portion B3, and / or a fourth side surface portion B4. The first side surface portion B1 may extend in a direction perpendicular to the center line A of the foldable electronic device 1. The third side surface portion B3 may be spaced apart from the first side surface portion B1 in the direction of the center line A of the foldable electronic device 1 and may be substantially parallel to the first side surface portion B1. The second side surface portion B2 may extend or interconnect an end portion of the first side surface portion B1 and an end portion of the third side surface portion B3. The fourth side surface portion B4 may extend or interconnect the other end portion of the first side surface portion B1 and the other end portion of the third side surface portion B3. The second side surface portion B2 and the fourth side surface portion B4 may be substantially parallel to each other. The fourth side surface portion B4 may be positioned closer to the center line A of the foldable electronic device 1 than the second side surface portion B2.

[0087] The first corner C1 where the first side surface area B1 and the second side surface area B2 extend or connect, and / or the second corner C2 where the second side surface portion B2 and the third side surface portion B3 extend or connect may be provided (or formed) in a smooth curved shape.

[0088] When viewed from above the first cover 112, the first side surface portion B1, the second side surface portion B2, the third side surface portion B3, and the fourth side surface portion B4 may surround the first cover 112.

[0089] The second side 1212 of the second frame 121 may include a fifth side surface portion B5, a sixth side surface portion B6, a seventh side surface portion B7, and / or an eighth side surface portion B8. The fifth side surface portion B5 may extend in a direction perpendicular to the center line A of the foldable electronic device 1. The seventh side surface portion B7 may be spaced apart from the fifth side surface portion B5 in the direction of the center line A of the foldable electronic device 1 and may be substantially parallel to the fifth side surface portion B5. The sixth side surface portion B6 may extend or interconnect one end portion of the fifth side surface portion B5 and one end portion of the seventh side surface portion B7. The eighth side surface portion B8 may extend or interconnect the other end portion of the fifth side surface portion B5 and the other end portion of the seventh side surface portion B7. The sixth side surface portion B6 and the eighth side surface portion B8 may be substantially parallel to each other. The eighth side surface portion B8 may be positioned closer to the center line A of the foldable electronic device 1 than the sixth side surface portion B6.

[0090] The third corner C3 where the fifth side surface area B5 and the sixth side surface area B6 extend or connect and / or the fourth corner C4 where the sixth side surface portion B6 and the seventh side surface portion B7 extend or connect may be provided (or formed) in a smooth curved shape.

[0091] When viewed from above the second cover 122, the fifth side surface portion B5, the sixth side surface portion B6, the seventh side surface portion B7, and the eighth side surface portion B8 may surround the second cover 122.

[0092] In the folded state of the foldable electronic device 1, the first side 1112 of the first frame 111 and the second side 1212 of the second frame 121 may be aligned and overlapped with each other. In the folded state of the foldable electronic device 1, the first side surface portion B1 and the fifth side surface portion B5 may be aligned and overlapped with each other. In the folded state of the foldable electronic device 1, the second side surface portion B2 and the sixth side surface portion B6 may be aligned and overlapped with each other. In the folded state of the foldable electronic device 1, the third side surface portion B3 and the seventh side surface portion B7 may be aligned and overlapped with each other.

[0093] The first side surface portion B1, the third side surface portion B3, and the fourth side surface portion B4 may be a side border (or screen border) of a side region of the first display module 15 around the center line A of the foldable electronic device 1. The fifth side surface portion B5, the seventh side surface portion B7, and the eighth side surface portion B8 may be a side border (or screen border) of the other side region of the first display module 15 around the center line A of the foldable electronic device 1.

[0094] The fourth side surface portion B4 and the eighth side surface portion B8 may be located on opposite sides of the third display area 153. When viewed from above the front surface of the foldable electronic device 1 in the unfolded state, the fourth side surface portion B4 and the eighth side surface portion B8 may be invisible.

[0095] The hinge housing (also referred to as a hinge cover) 13 may include one or more hinge modules (e.g., a first hinge module 141, a second hinge module 142, and a third hinge module 143) included in the hinge 14.

[0096] When the foldable electronic device 1 is switched from the unfolded state to the folded state, due to the change in the relative position between the first frame 111 and the second frame 121 connected via the hinge 14 and the change in the state of the hinge 14 coupled to the hinge housing 13, a gap between the first frame 111 and the second frame 121 may open on opposite sides of the third display area 153. The hinge housing 13 may be exposed to the outside through the opening gap. For example, in the folded state of the foldable electronic device 1, the hinge housing 13 may be exposed to the outside through the opening gap between the fourth side surface portion B4 of the first frame 111 and the eighth side surface portion B8 of the second frame 121. The width of the gap between the fourth side surface portion B4 of the first frame 111 and the eighth side surface portion B8 of the second frame 121 may vary according to the angle between the first frame 111 and the second frame 121. The hinge housing 13 may be more exposed to the outside in the folded state of the foldable electronic device 1 than in the intermediate state of the foldable electronic device 1. In the folded state of the foldable electronic device 1, the hinge housing 13 may be a part of the appearance covering the interior of the foldable electronic device 1. In the folded state of the foldable electronic device 1, the side surface of the foldable electronic device 1 may include a first side surface area provided by the first side 1112 of the first frame 111, a second side surface area provided by the second side 1212 of the second frame 121, and a third side surface area provided by the hinge housing 13.

[0097] When the foldable electronic device 1 is switched from the folded state to the unfolded state, due to the change in the relative position between the first frame 111 and the second frame 121 connected via the hinge 14 and the change in the state of the hinge 14 coupled to the hinge housing 13, on the other side of the third display area 153, the gap between the first frame 111 and the second frame 121 may close. For example, in the unfolded state of the foldable electronic device 1, the gap between the fourth side surface portion B4 of the first frame 111 and the eighth side surface portion B8 of the second frame 121 may close, and the hinge housing 13 may not be exposed to the outside.

[0098] The second display module 16 (also referred to as the second display) may be located between the second cover 122 and the second support plate 1211 of the second frame 121. The second display module 16 may be disposed on the second cover 122 and / or the second support plate 1211 or coupled to the second cover 122 and / or the second support plate 1211. The display area of the second display module 16 may be visually visible through the second cover 122.

[0099] In the folded state, the foldable electronic device 1 may be configured to display an image through the second display module 16 instead of the first display module 15.

[0100] The first camera module 201, the second camera module 202, the third camera module 203, the fourth camera module 204, and / or the fifth camera module 205 may include one or more lenses, one or more image sensors, and / or an image signal processor (ISP).

[0101] The first camera module 201, the second camera module 202, and the third camera module 203 may be accommodated in the first housing 11 to correspond to the first cover 112 (or the first rear surface area of the foldable electronic device 1). For example, the first cover 112 may include a first camera hole (or a first light transmission area) corresponding to the first camera module 201, a second camera hole (or a second light transmission area) corresponding to the second camera module 202, and / or a third camera hole (or a third light transmission area) corresponding to the third camera module 203. The position or number of the camera modules accommodated in the first housing 11 to correspond to the first cover 112 may vary and is not limited to the illustrated example.

[0102] The first camera module 201 (also referred to as the first camera, the first rear camera module, or the first rear camera), the second camera module 202 (also referred to as the second camera, the second rear camera module, or the second rear camera), or the third camera module 203 (also referred to as the third camera, the third rear camera module, or the third rear camera) may include a wide-angle camera module, a telephoto camera module, a color camera module, a black and white camera module, or an IR camera (e.g., a time-of-flight (TOF) camera or a structured light camera) module.

[0103] The first camera module 201, the second camera module 202, and the third camera module 203 may have different attributes (e.g., viewing angles) or functions.

[0104] According to various embodiments, the first camera module 201, the second camera module 202, or the third camera module 203 may provide different viewing angles (or lenses with different viewing angles). The foldable electronic device 1 may selectively use the viewing angles of the first camera module 201, the second camera module 202, or the third camera module 203 based on the user's selection regarding the viewing angle.

[0105] The fourth camera module 204 may be accommodated in the first housing 11 to correspond to the first front surface area of the foldable electronic device 1.

[0106] When viewed from above the first front surface area of the foldable electronic device 1, the fourth camera module 204 (also referred to as the fourth camera, the first front camera module, or the first front camera) may overlap with the first display area 151 of the display module 15. The fourth camera module 204 may be located on the rear surface or below the first display area 151. When viewed from the outside of the foldable electronic device 1, the fourth camera module 204 or the position of the fourth camera module 204 may not be visually distinguishable (or exposed) substantially. The fourth camera module 204 may include, for example, a hidden behind-display camera (e.g., an under-display camera (UDC)). External light may pass through the first display module 15 and reach the fourth camera module 204.

[0107] Although not shown separately, the fourth camera module 204 may be accommodated in the second housing 12 to correspond to the second front surface area of the foldable electronic device 1.

[0108] Although not shown separately, an additional camera module (not shown separately) may be accommodated in the second housing 12 to correspond to the second front surface area of the foldable electronic device 1.

[0109] The fifth camera module 205 may be accommodated in the second housing 12 to correspond to the second cover 122 (or the second rear surface area of the foldable electronic device 1).

[0110] The fifth camera module 205 may be positioned to align with an opening provided in the second display module 16 or may be at least partially inserted into the opening. External light may pass through the second cover 122 and the opening provided in the second display module 16 and reach the fifth camera module 205. The opening in the second display module 16 that aligns or overlaps with the fifth camera module 205 may be a through-hole. In various embodiments, the opening in the second display module 16 that aligns or overlaps with the fifth camera module 205 may be a notch (not shown separately).

[0111] When viewed from above the second rear surface area of the foldable electronic device 1, the fifth camera module 205 (also referred to as the fifth camera, the second front camera module, or the second front camera) may overlap with the second display area 16. The fifth camera module 205 may be located on the rear surface of the second display area 16 or below the second display area 16. When viewed from the outside of the foldable electronic device 1, the fifth camera module 205 or the position of the fifth camera module 205 may not be visually distinguishable (or exposed) substantially. The fifth camera module 205 may include, for example, a rear camera behind a hidden display (e.g., UDC). External light may pass through the second display module 16 and reach the fifth camera module 205 through the second cover 122.

[0112] The first camera module 201, the second camera module 202, the third camera module 203, the fourth camera module 204, or the fifth camera module 205 may operate as at least a part of the sensor module. For example, an IR camera module may operate as at least a part of the sensor module.

[0113] The light-emitting module 206 may be accommodated in the first housing 11 to correspond to the first cover 112 (or the first rear surface area of the foldable electronic device 1). The first cover 112 may include a flash hole (or a fourth light-transmissive area) corresponding to the light-emitting module 206. The light-emitting module 206 may include, for example, an LED or a xenon lamp. The light-emitting module 206 may include a light source for the first camera module 201, the second camera module 202, and / or the third camera module 203.

[0114] The foldable electronic device 1 may further include another light-emitting module (not shown separately) accommodated in the foldable housing 10 to correspond to the front surface of the foldable electronic device 1. The light-emitting module may provide, for example, state information of the electronic device 1 in an optical form. In various embodiments, the light-emitting module may provide a light source that operates in combination with the operation of the first camera module 204.

[0115] The sensor module 207 may be accommodated in the foldable housing 10 to correspond to the front of the foldable electronic device 1.

[0116] The sensor module 207 may include an optical sensor module. The optical sensor module may include, for example, a proximity sensor module or an illuminance sensor module.

[0117] When viewed from above the first front surface area of the foldable electronic device 1, the sensor module 207 may overlap with the first display area 151 of the first display module 15. The sensor module 207 may be located on the rear surface of the first display area 151 or below the first display area 151. When viewed from the outside of the foldable electronic device 1, the sensor module 207 or the position of the sensor module 207 may not be visually distinguishable (or exposed) substantially. External light may pass through the first display module 15 and reach the sensor module 207.

[0118] The foldable electronic device 1 may further include various other sensor modules (e.g., a biosensor module) (not shown separately).

[0119] The first audio input module may include a first microphone (also referred to as the first mic) (not shown separately). The second audio input module may include a second microphone (also referred to as the second mic) (not shown separately). The third audio input module may include a third microphone (also referred to as the third mic) (not shown separately). The fourth audio input module may include a fourth microphone (also referred to as the fourth mic) (not shown separately). The first microphone may be accommodated in the first housing 11 to correspond to, for example, the first microphone hole H11 included in the first side surface portion B1 of the first side 1112. The second microphone may be accommodated in the first housing 11 to correspond to, for example, the second microphone hole H12 included in the third side surface portion B3 of the first side 1112. The third microphone may be accommodated in the first housing 11 to correspond to, for example, the third microphone hole H13 included in the third side surface portion B3 of the first side 1112. The fourth microphone may be accommodated in the second housing 12 to correspond to, for example, the fourth microphone hole H14 included in the seventh side surface portion B7 of the second side 1212. The positions or numbers of the microphones and the microphone holes corresponding to the microphones may vary and are not limited to the illustrated examples.

[0120] The first audio output module may include a first speaker (not shown separately). The second audio output module may include a second speaker (not shown separately). The first speaker or the second speaker may be a speaker for multimedia playback or recording playback. The first speaker may be accommodated in the second housing 12 to correspond to, for example, the first speaker hole H21 included in the second side 1212. The second speaker may be accommodated in the second housing 12 to correspond to, for example, the second speaker hole H21 provided in the second side 1212. The positions or numbers of the speakers for multimedia playback or recording playback and the speaker holes corresponding to the speakers may vary and are not limited to the illustrated examples.

[0121] The third audio output module may include a third speaker (not shown separately). The third speaker may include a call receiver. The third speaker is accommodated in the first housing 11 to correspond to, for example, a third speaker hole H23 provided between a seventh side surface portion B7 of the second cover 122 and the second side 1212. The position or number of the speaker for calls and the speaker hole corresponding to the speaker may vary and is not limited to the illustrated example.

[0122] The key input module may include a first key (also referred to as a first side key) 209, a second key (also referred to as a second side key) 210, and / or a key signal generator (not shown separately). For example, the first key 209 may be located in a first key hole included in a second side surface portion B2 of the first side 1112, and the second key 210 may be located in a second key hole included in the second side surface portion B2 of the first side 1112. The key signal generator may be configured to generate a first key signal in response to a press or touch on the first key 209 and generate a second key signal in response to a press or touch on the second key 210. The position or number of the key input module may vary and is not limited to the illustrated example.

[0123] The first connection terminal 211 (also referred to as a first connector or a first interface terminal) may be accommodated in the first housing 11 to correspond to a first connection terminal hole (e.g., a first connector hole) included in a first side surface portion B1 of the first side 1112. The foldable electronic device 1 may send power and / or data to an external electronic device electrically connected to the first connection terminal 211 and / or receive power and / or data from the external electronic device electrically connected to the first connection terminal 211. The first connection terminal 211 may include, for example, a USB connector or an HDMI connector. The position of the first connection terminal 211 and the first connection terminal hole corresponding to the first connection terminal 211 may vary and is not limited to the illustrated example.

[0124] The second connection terminal 212 (also referred to as a second connector or a second interface terminal) may be accommodated in the second housing 12 to correspond to a second connection terminal hole (e.g., a second connector hole) included in a sixth side surface portion B6 of the second side 1112. An external storage medium such as a Secure Digital memory (SD) card, a SIM card, or a Universal SIM (USIM) may be connected to the second connection terminal 212. The position of the second connection terminal 212 and the second connection terminal hole corresponding to the second connection terminal 212 may vary and is not limited to the illustrated example.

[0125] The first display module 15 may include a flexible display 31 and a support sheet 32.

[0126] The flexible display 31 may include a transparent cover 310, a transparent adhesive material (or a transparent bonding material for optical purposes) 320, an optical layer 330, a display panel 340, a base film 350, and / or a lower panel 360.

[0127] The transparent cover 310 may protect the flexible display 31 from external influences. The transparent cover 310 may provide (or form) the front surface of the foldable electronic device 1. The transparent cover 310 may be provided in the form of a thin flexible film (e.g., a thin film layer). The transparent cover 310 may include, for example, a plastic film (e.g., a PI film) or thin film glass (e.g., ultra-thin glass (UTG)). In various embodiments, the transparent cover 310 may include multiple layers. For example, the transparent cover 310 may be in the form of various coatings provided on a plastic film or thin glass. The transparent cover 310 may be, for example, in the form of at least one protective layer or coating including a polymer material (e.g., PET, PI, or TPU) provided on a plastic film or thin film glass.

[0128] The optically transparent adhesive material 320 may be disposed between the transparent cover 310 and the optical layer 330. The optically transparent adhesive material 320 may include, for example, an optically clear adhesive (OCA), an optically clear resin (OCR), or an optically elastic resin (superview resin, SVR).

[0129] The optical layer 330 may be disposed between the optically transparent adhesive material 320 and the display panel 340. The optical layer 330 may include a polarization layer (or polarizer) or a phase retardation layer (or phase retarder). The polarization layer and the phase retardation layer may improve the outdoor visibility of the screen. For example, the optical layer 330 may selectively allow light generated from the light source of the display panel 340 and oscillating in a predetermined direction to pass through. In various embodiments, a single layer in which the polarization layer and the retardation layer are combined may be provided, and such a layer may be interpreted as a "circular polarization layer".

[0130] The polarization layer (or circular polarization layer) may be omitted. For example, a black pixel definition layer (PDL) and / or a color filter may be provided instead of the polarization layer.

[0131] The display panel 340 may be disposed between the optical layer 330 and the lower panel 350. The display panel 340 may include a light-emitting layer 341, a thin film transistor (TFT) film (also referred to as a TFT substrate) 342, and / or a package (e.g., thin film encapsulation (TFE)) 343.

[0132] The light-emitting layer 341 may be disposed between the TFT film 342 and the package 343. The light-emitting layer 341 may include a plurality of pixels implemented by light-emitting elements such as organic light-emitting diodes (OLEDs) or micro LEDs. The light-emitting layer 341 may be provided on the TFT film 342 by organic vapor deposition.

[0133] The TFT film 342 can be located between the light-emitting layer 341 and the base film 350. The TFT film 342 can include a film structure in which at least one TFT is disposed on a flexible substrate (e.g., a PI film) through a series of processes such as deposition, patterning, and / or etching. At least one TFT can control the current to the light-emitting elements of the light-emitting layer 341 to turn on or off the pixels or adjust the brightness of the pixels. At least one TFT can be implemented as, for example, an amorphous silicon (a-Si) TFT, a liquid crystal polymer (LCP) TFT, a low-temperature polycrystalline oxide (LTPO) TFT, or a low-temperature polysilicon (LTPS) TFT.

[0134] The display panel 340 can include a storage capacitor, and the storage capacitor can hold the voltage signal to the pixels, can hold the voltage applied to the pixels within one frame, or can suppress the change in the gate voltage of the TFT due to leakage during the light-emitting time. Through routines (e.g., initialization or data writing) for controlling at least one TFT, the storage capacitor can maintain the voltage applied to the pixels at regular time intervals.

[0135] The encapsulation 343 can be disposed between the optical layer 330 and the light-emitting layer 341. The encapsulation 343 can seal the light-emitting layer 341 to prevent oxygen and / or moisture from penetrating into the OLED, thereby reducing or preventing the OLED from losing its light-emitting characteristics due to oxygen and / or moisture. The encapsulation 343 can also be referred to as a pixel protection layer for protecting the plurality of pixels of the light-emitting layer 341.

[0136] The base film 350 can be disposed between the display panel 340 and the lower panel 460. The base film 350 can include a flexible film made of a polymer or plastic, such as PI or polyethylene terephthalate (PET). The base film 350 can support and / or protect the display panel 340. The base film 350 can be referred to as a protective film, a back film, or a backplane.

[0137] Although not shown separately, in addition to the base film 350, at least one additional polymer layer (e.g., a layer containing PI, PET, or thermoplastic polyurethane (TPU)) can be provided on the rear surface of the display panel 340.

[0138] The lower panel 360 can include a plurality of layers for various functions. The lower panel 360 can include, for example, a light-blocking layer 361, a buffer layer 362, and / or a lower layer 363. The light-blocking layer 361 can be disposed between the base film 350 and the buffer layer 362. The buffer layer 362 can be disposed between the light-blocking layer 361 and the lower layer 363.

[0139] The light-blocking layer 361 can block at least some of the light incident from the outside. The light-blocking layer 361 can include, for example, an embossed layer. The embossed layer can be a black layer including an uneven pattern.

[0140] The buffer layer 362 can mitigate external impacts applied to the flexible display 31. The buffer layer 362 can include, for example, a sponge layer or a cushion layer.

[0141] The lower layer 363 can diffuse, disperse, and / or dissipate heat generated from the foldable electronic device 1 or the flexible display 31.

[0142] The lower layer 363 can absorb and / or block electromagnetic waves.

[0143] The lower layer 363 can mitigate external impacts applied to the foldable electronic device 1 or the flexible display 31.

[0144] The lower layer 363 can include a composite sheet 364 or a metal sheet 365. The composite sheet 364 can be disposed between the buffer layer 362 and the metal sheet 365. The composite sheet 364 can be a sheet obtained by combining layers or sheets having different properties. The composite sheet 364 can include, for example, at least one of polyimide or graphite. The composite sheet 364 can also be replaced with a single sheet including a single material (e.g., polyimide or graphite). The composite sheet 364 can diffuse, disperse, and / or dissipate heat generated from, for example, the foldable electronic device 1 or the flexible display 31. The metal sheet 365 can be disposed on the rear surface of the flexible display 31. The metal sheet 365 can include, for example, a copper sheet, but can be made of various other metal materials without being limited thereto. The metal sheet 365 can reduce electromagnetic interference (EMI) associated with, for example, the flexible display 31.

[0145] Although not shown separately, at least a part of the lower layer 363 can include various conductive members. The various conductive members can include plates of various metal materials such as copper, aluminum, or stainless steel. The various conductive members can enhance the rigidity of the foldable electronic device 1 or the first display module 15. The various conductive members can block environmental noise. The various conductive members can be used to dissipate heat emitted from a heat-generating component (e.g., a display driver integrated circuit (DDI)).

[0146] The lower layer 363 can include a clad metal. The clad metal can be an integrated or single composite material in which multiple metal layers are laminated (or joined). The clad metal can be manufactured by various methods such as welding, pressing, casting, extrusion, or laser cladding of multiple metals. The clad metal can provide (or have) a combination of the properties of multiple metals (e.g., a composite of properties). The multiple metals can have various individual properties such as electromagnetic properties, chemical properties, thermal properties, or mechanical properties.

[0147] The lower layer 363 may include a composite metal in which a first metal layer including stainless steel and a second metal layer including aluminum are laminated. Not limited thereto, the composite metal may be implemented as a combination of various metal layers.

[0148] The lower layer 363 may include various layers for various other functions.

[0149] At least one of the multiple layers included in the lower panel 360 (e.g., the light blocking layer 361, the buffer layer 362, the composite sheet 364, and the metal sheet 365) may be omitted.

[0150] The setting order of the multiple layers included in the lower panel 360 is not limited to the illustrated embodiment, but various changes can be made.

[0151] Although not shown separately, the multiple layers included in the display panel 340 or the lower panel 360, or their lamination structure or lamination order, may vary and are not limited to the illustrated examples.

[0152] The foldable electronic device 1 may include a touch detection circuit (e.g., a touch sensor (not shown separately)). The touch detection circuit may include a transparent conductive layer (or film) based on various conductive materials such as indium tin oxide (ITO).

[0153] The touch detection circuit (not shown separately) may be an additional type and may be disposed between the transparent cover 310 and the optical layer 330.

[0154] The touch detection circuit (not shown separately) may be an on-cell type and may be disposed between the optical layer 330 and the display panel 340.

[0155] The display panel 340 may be an in-cell type and may include a touch detection circuit or a touch detection function.

[0156] The flexible display 31 may include a touch detection circuit (not shown separately) disposed between the package 343 and the optical layer 330 on the package 343. The touch detection circuit may include, for example, a conductive pattern such as a metal mesh (e.g., an aluminum metal mesh). To cope with the bending of the flexible display 31, the metal mesh may have greater durability than the transparent conductive layer made of ITO.

[0157] The flexible display 31 may further include a pressure detection circuit (also referred to as a pressure sensor) (not shown separately) capable of measuring the intensity (pressure) of a touch.

[0158] The first display module 15 may include an electromagnetic induction panel (e.g., a digital converter) (not shown separately) for detecting a magnetic field type pen input device (e.g., an electronic pen or a stylus).

[0159] The flexible display 31 can be implemented by omitting some of its components or adding other components according to the form provided thereby or the trend of convergence.

[0160] The support sheet 32 (also referred to as a support layer) can be disposed on the rear surface of the flexible display 31. The rear surface of the flexible display 31 can be the surface located on the side opposite to the surface from which light from the display panel 340 including a plurality of pixels emits. The support sheet 32 can be disposed (e.g., attached) on the rear surface of, for example, the lower panel 360 to cover at least a portion of the lower panel 360 of the flexible display 31. The support sheet 32 can be coupled to the lower panel 360 via an adhesive material (or a bonding material) (not shown separately).

[0161] The flexible display 31 and the support sheet 32 can be bonded to each other via a thermally reactive adhesive material (or a thermally reactive bonding material), a photo-reactive adhesive material (or a photo-reactive bonding material), a general adhesive (or a general binder), or a material such as a double-sided tape (not shown separately).

[0162] The flexible display 31 and the support sheet 32 can be bonded to each other via various polymers such as triazine thiol, dithiopyrimidine, or a silane-based compound, or an organic adhesive material (or an organic bonding material) such as a sealant.

[0163] The support sheet 32 can improve the durability of the first display module 15. For example, the support sheet 32 can enhance the rigidity of the first display module 15. When the foldable electronic device 1 is in a folded state, the support sheet 32 can reduce the load or stress effect on the first display module 15. The support sheet 32 can reduce or prevent damage to the flexible display 31 caused by the force transmitted when the foldable electronic device 1 is switched from an unfolded state to a folded state.

[0164] The support sheet 32 can include a metallic material. The support sheet 32 can include, for example, stainless steel. The support sheet 32 can include various other metallic materials.

[0165] The support sheet 32 can include an engineering plastic.

[0166] The support sheet 32 may include a grid structure (not shown separately) that at least partially overlaps with the third display area 153 of the first display module 15. The grid structure may include, for example, a plurality of openings (or slits) provided in the support sheet 32. The grid structure may refer to, for example, a pattern structure in which a plurality of openings are regularly arranged. For example, the plurality of openings may be periodically provided, may have substantially the same shape, and may be repeatedly arranged at regular intervals. The grid structure may reduce the deterioration of the flexibility of the third display area 153 of the first display module 15. The grid structure including a plurality of openings may be referred to as an opening pattern, a hole pattern, or a grid pattern.

[0167] The support sheet 32 may include a recess pattern (not shown separately), which includes a plurality of recesses instead of the grid structure. For example, the recess pattern may refer to such a pattern structure in which a plurality of recesses provided (or formed) in a groove shape in one surface of the support sheet 32 facing the lower panel 360 of the flexible display 31 or in a surface opposite to the one surface are regularly provided.

[0168] The grid structure or the recess pattern may extend to the first display area 131 and / or the second display area 132 of the first display module 15.

[0169] The support sheet 32 including the grid structure or the recess pattern, or a corresponding conductive member may be configured as a multi-layer.

[0170] The support sheet 32 may suppress electromagnetic interference (EMI) with respect to the flexible display 31.

[0171] The support sheet 32 may diffuse or dissipate heat emitted from a heat-generating component (e.g., a display driving circuit, such as a DDI or a DDI chip).

[0172] The support sheet 32 may be provided between the base film 350 and the lower panel 360.

[0173] The support sheet 32 may be interpreted as an element separated from the first display module 15.

[0174] The support sheet 32 may be omitted.

[0175] The second display module 16 may include an optical layer (e.g., the optical layer 330 in Figure 3 ), a display panel (e.g., the display panel 340 in Figure 3 ), a base film (e.g., the base film 350 in Figure 3 ), and / or a lower panel (e.g., the lower panel 360 in Figure 3 ). An optically transparent adhesive material (or an optically transparent bonding material) (e.g., the optically transparent adhesive material 320 in Figure 3 ) may be provided between the optical layer and the second cover 122.

[0176] The second display module 16 may be implemented as substantially rigid. For example, a base film included in the second display module 16 (e.g., Figure 3 the base film 350 in

[0177]

[0178] The second display module 16 may be implemented as substantially flexible. The second display module 16 may be provided in a form including a second cover 122. The second cover 122 may be excluded from the foldable housing 10.

[0179] The foldable electronic device 1 may further include various components, depending on the form in which it is provided. Although all of these components cannot be listed because their variations change according to the convergence trend of the foldable electronic device 1, components equivalent to the above-described components may be further included in the foldable electronic device 1. In various embodiments, depending on the form in which the foldable electronic device is provided, specific components may be excluded from the above-described components or replaced with other components.

[0180] Figure 4 is an exploded perspective view of a foldable electronic device 1 according to an embodiment of the present disclosure. Figure 5 and Figure 6 are views showing the foldable housing 10 in an unfolded state according to an embodiment of the present disclosure.

[0181] Referring to Figure 4 、 Figure 5 and Figure 6 , the foldable electronic device 1 may include a foldable housing 10, a first display module 15, a first flexible printed circuit board (FPCB) 7, and / or a second flexible printed circuit board 8. Descriptions of some components having the same reference numerals as those shown in Figure 1 、 Figure 2 and Figure 3 will be omitted.

[0182] The foldable housing 10 may include a first housing 11, a second housing 12, a hinge housing 13, and / or a hinge 14.

[0183] The first housing 11 may include a first frame 111 and a first cover 112 (see Figure 1 ). The first frame 111 may include a first support plate 1111 and a first side 1112.

[0184] The first support area 1111A of the first support plate 1111 may include a first front surface placement portion, on which one or more components such as the first display area 151 of the first display module 15 are stably placed or supported. The first front surface placement portion may be configured with, for example, a combination of surface areas having different heights.

[0185] The third support area 1111B of the first support plate 1111 may include a first rear surface placement portion, on which one or more components such as the first printed circuit board (not shown separately) and / or the first battery (not shown separately) are stably placed or supported. The first rear surface placement portion may be configured with, for example, a combination of surface areas having different heights.

[0186] The second housing 12 may include a second frame 121 and a second cover 122 (see Figure 1 ). The second frame 121 may include a second support plate 1211 and a second side 1212.

[0187] The second support area 1211A of the second support plate 1211 may include a second front surface placement portion, on which one or more components such as the second display area 152 of the first display module 15 are stably placed or supported. The second front surface placement portion may be configured with, for example, a combination of surface areas having different heights.

[0188] The fourth support area 1211B of the second support plate 1211 may include a second rear surface placement portion, on which one or more components such as the second printed circuit board (not shown separately) and / or the second battery (not shown separately) are stably placed or supported. The second rear surface placement portion may be configured with, for example, a combination of surface areas having different heights.

[0189] Via an adhesive material (or bonding material), the first display area 151 of the first display module 15 may be disposed on the first support area 1111A of the first support plate 1111, and the second display area 152 of the first display module 15 may be disposed on the second support area 1211A of the second support plate 1211. The adhesive material (or bonding material) may include, for example, a thermally reactive adhesive material (or thermally reactive bonding material), a photo-reactive adhesive material (or photo-reactive bonding material), a general adhesive (or general binder), and / or a double-sided tape.

[0190] The hinge housing 13 may include a first side wall 131 and a second side wall 132. The hinge housing 13 may extend from the first side wall 131 to the second side wall 132 in the direction of the center line A of the foldable electronic device 1.

[0191] The first side wall 131 and the second side wall 132 of the hinge housing 13 can be substantially perpendicular to the direction of the center line A of the foldable electronic device 1, and can be spaced apart from each other in the direction of the center line A of the foldable electronic device 1.

[0192] The first side wall 131 and the second side wall 132 of the hinge housing 13 can be provided (or formed) to protrude in opposite directions.

[0193] The first side wall 131 and the second side wall 132 of the hinge housing 13 can be provided (or formed) to be substantially symmetric with each other on opposite sides.

[0194] The first side wall 131 of the hinge housing 13 can be positioned to correspond to the first side surface portion B1 of the first frame 111 and the fifth side surface portion B5 of the second frame 121. In the unfolded state of the foldable electronic device 1, the first side wall 131 can be covered by the first side surface portion B1 of the first frame 111 and the fifth side surface portion B5 of the second frame 121. In the folded state of the foldable electronic device 1, the first side wall 131 can be exposed to the outside through the opening gap between the first side surface portion B1 of the first frame 111 and the fifth side surface portion B5 of the second frame 121.

[0195] The second side wall 132 of the hinge housing 13 can be positioned to correspond to the third side surface portion B3 of the first frame 111 and the seventh side surface portion B7 of the second frame 121. In the unfolded state of the foldable electronic device 1, the second side wall 132 can be covered by the third side surface portion B3 of the first frame 111 and the seventh side surface portion B7 of the second frame 121. In the folded state of the foldable electronic device 1, the second side wall 132 can be exposed to the outside through the opening gap between the third side surface portion B3 of the first frame 111 and the seventh side surface portion B7 of the second frame 121.

[0196] The portion between the first side wall 131 and the second side wall 132 of the hinge housing 13 (hereinafter referred to as "side wall extension portion 133") can extend or interconnect the first side wall 131 and the second side wall 132. In the folded state of the foldable electronic device 1, the side wall extension portion 133 can be exposed to the outside through the opening gap between the fourth side surface portion B4 of the first frame 111 and the eighth side surface portion B8 of the second frame 121. In the unfolded state of the foldable electronic device 1, the gap between the fourth side surface portion B4 of the first frame 111 and the eighth side surface portion B8 of the second frame 121 can be closed, and the side wall extension portion 133 can not be exposed to the outside.

[0197] The hinge housing 13 may include a first surface area (not shown separately) and a second surface area 13A provided by a combination of a first side wall 131, a second side wall 132, and a side wall extension 1333. The first surface area may include an area that is exposed to the outside when the foldable electronic device 1 is in a folded state. The second surface area 13A may be disposed on the side opposite to the first surface area. The second surface area 13A may include a seating portion configured to stably place and support the first hinge module 141, the second hinge module 142, and the third hinge module 143 thereon. The seating portion may be provided by a combination of surface areas having different heights. For example, the seating portion may include a first recess R1 corresponding to the first hinge module 141, a second recess R3 corresponding to the second hinge module 142, and a third recess R3 corresponding to the third hinge module 143.

[0198] The hinge housing 13 may be coupled to the hinge 14. The hinge housing 13 may be connected to the first frame 111 of the first housing 11 and the second frame 121 of the second housing 12 via the hinge 14, for example. When the foldable electronic device 1 switches between an unfolded state and a folded state, the first housing 11 and the second housing 12 connected to each other via the hinge 14 may rotate in different directions about the hinge 14 when viewed in the direction of the center line A of the foldable electronic device 1. In the unfolded state of the foldable electronic device 1, the hinge housing 13 may be covered by the first frame 111 of the first housing 11 and the second frame 121 of the second housing 12. In the folded state of the foldable electronic device 1, the hinge housing 13 may be exposed to the outside through a gap between the first frame 111 of the first housing 11 and the second frame 121 of the second housing 12.

[0199] The hinge housing 13 may be defined or interpreted as a component included in the hinge 14.

[0200] The hinge 14 may include a first hinge module (also referred to as a first hinge assembly) 141, a second hinge module (also referred to as a second hinge assembly) 142, a third hinge module (also referred to as a third hinge assembly) 143, a first plate 61, a second plate 62, a third plate 63, a fourth plate 64, a fifth plate 65, a sixth plate 66, a seventh plate 67, and / or an eighth plate 68.

[0201] The first hinge module 141, the second hinge module 142, and the third hinge module 143 may interconnect the first frame 111 and the second frame 121. The first frame 111 and the second frame 121 may be rotatably connected to each other via the first hinge module 141, the second hinge module 142, and the third hinge module 143.

[0202] The first hinge module 141, the second hinge module 142, and the third hinge module 143 may be arranged along the center line A of the foldable electronic device 1, and the third hinge module 143 may be located between the first hinge module 141 and the second hinge module 142.

[0203] The third hinge module 143 may be positioned to correspond to the center between the first hinge module 141 and the second hinge module 141 (e.g., a point on the center line (A) that is substantially equidistant from the first hinge module 141 and the second hinge module 142).

[0204] The first hinge module 141 may include a first bracket 1411, a second bracket 1412, and / or a bracket connector 1413. The first bracket 1411 may be disposed on or coupled to the first support region 1111A of the first frame 111 by, for example, screw fastening. The second bracket 1412 may be disposed on or coupled to the second support region 1211A of the second frame 121 by, for example, screw fastening. The first bracket connector 1413 may interconnect the first bracket 1411 and the second bracket 1412. The first bracket 1411 and the second bracket 1412 may be rotatable relative to the first bracket connector 1413.

[0205] The first bracket connector 1413 of the first hinge module 141 may be configured to allow the first bracket 1411 of the first hinge module 141 to be fixed to the first frame 111 to which it is attached and the second bracket 1412 of the first hinge module 141 to be fixed to the second frame 121 to which it is attached to rotate the same angle in opposite directions.

[0206] The first bracket connector 1413 of the first hinge module 141 may be configured to allow the first bracket 1411 of the first hinge module 141 to be fixed to the first frame 111 to which it is attached and the second bracket 1412 of the first hinge module 141 to be fixed to the second frame 121 to which it is attached to rotate at least one angle and maintain the at least one angle. The first bracket connector 1413 may have, for example, a free stop function.

[0207] The first bracket connector 1413 of the first hinge module 141 may be configured to provide a force by which the first frame 111 (to which the first bracket 1411 of the first hinge module 141 is fixed) and the second frame 121 (to which the second bracket 1412 of the first hinge module 141 is fixed) may rotate relative to each other. Although not shown separately, the first bracket connector 1413 may be configured with, for example, a combination of at least one shaft, at least one cam gear, and / or at least one compression spring that provides elasticity.

[0208] The first bracket connector 1413 of the first hinge module 141 can be coupled to the hinge housing 13. The first bracket connector 1413 can be coupled to the hinge housing 13 by, for example, screw fastening.

[0209] The first bracket connector 1413 of the first hinge module 141 can be coupled to the hinge housing 13. The first bracket connector 1413 can be disposed in or coupled to a first recess R1 of the hinge housing 13 by, for example, screw fastening.

[0210] The second hinge module 142 can be provided to be at least partially the same as, substantially the same as, or at least partially similar to the first hinge module 141. The second hinge module 142 can include a third bracket 1421 (e.g., the first bracket 1411), a fourth bracket 1422 (e.g., the second bracket 1412), and / or a second bracket connector 1423 (e.g., the first bracket connector 1413). In an embodiment, the second hinge module 142 can be disposed in the foldable electronic device 1 in an arrangement direction opposite to that of the first hinge module 141. The third bracket 1421 of the second hinge module 142 can be disposed on or coupled to a second support region 1211A of the second frame 121, and the fourth bracket 1422 of the second hinge module 142 can be disposed on or coupled to a first support region 1111A of the first frame 111.

[0211] The second bracket connector 1423 of the second hinge module 142 can be coupled to the hinge housing 13. The second bracket connector 1423 can be disposed in or coupled to a second recess R2 of the hinge housing 13 by, for example, screw fastening.

[0212] The third hinge module 143 can include a rail assembly. The third hinge module 143 can include, for example, a first slider 1431, a second slider 1432, and a rail 1433. The first slider 1431 can be disposed on or coupled to a first support region 1111A of the first frame 111 by, for example, screw fastening. The second slider 1432 can be disposed on or coupled to a second support region 1211A of the second frame 121 by, for example, screw fastening. The first slider 1431 can be connected to the rail 1433 to be slidable relative to the rail 1433. The second slider 1432 can be connected to the rail 1433 to be slidable relative to the rail 1433. The rail 1433 can include a first rail (e.g., a first rotational movement rail) having a sliding pair relationship with the first slider 1431 and a second rail (e.g., a second rotational movement rail) having a sliding pair relationship with the second slider 1432.

[0213] The guide rail 1433 of the third hinge module 143 can be coupled to the hinge housing 13. The guide rail 1433 can be disposed in or coupled to the third recess R3 of the hinge housing 13 by, for example, screw fastening.

[0214] The third hinge module 143 between the first hinge module 141 and the second hinge module 142 can reduce the phenomenon of the gap opening between the first frame 111 and the second frame 121.

[0215] Although not shown separately, the first hinge module 141, the second hinge module 142, and / or the third hinge module 143 can be provided in various other forms, and are not limited to the illustrated examples.

[0216] The hinge 14 can include a first plate assembly PA1, and the first plate assembly PA1 includes a combination of a first plate 61 and a third plate 63. The first plate assembly PA1 can be defined or interpreted as a plate-like support, where the first plate 61 and the third plate 63 overlap and are coupled to each other.

[0217] The first plate assembly PA1 can be disposed on or coupled to the first support plate 1111 of the first frame 111. The first plate assembly PA1 can be disposed in or coupled to the first support region 1111A of the first support plate 1111 by, for example, screw fastening.

[0218] The first plate 61 and / or the third plate 63 can include a metallic material.

[0219] The first plate 61 and / or the third plate 63 can include stainless steel, titanium, amorphous alloy, or a metal-ceramic composite material (such as cermet).

[0220] The first plate 61 and / or the third plate 63 can include magnesium, magnesium alloy, aluminum, aluminum alloy, zinc alloy, or copper alloy. The first plate 61 and / or the third plate 63 can include various other metallic materials.

[0221] The first plate 61 and the third plate 63 can include the same metallic material.

[0222] The first plate 61 and the third plate 63 can include different metallic materials.

[0223] The first plate 61 and the third plate 63 can have substantially different thicknesses. For example, the third plate 63 can have a larger thickness than the first plate 61.

[0224] The first plate 61 and the third plate 63 can have substantially the same thickness.

[0225] Compared with the first plate 61, the third plate 63 can be configured to have a greater impact on ensuring the rigidity of the first plate assembly PA1.

[0226] The first plate 61 and the third plate 63 can be joined by welding.

[0227] The first plate 61 and the third plate 63 can be joined via an adhesive material (or bonding material) (not shown separately).

[0228] The first plate 61 and the third plate 63 can be joined by various other methods (not shown separately).

[0229] The first plate 61 and / or the third plate 63 can include a polymer such as an engineering plastic.

[0230] The third plate 63 can be at least partially located between the first plate 61 and the first support plate 1111 of the first frame 111.

[0231] The third plate 63 can include a plurality of screw holes SH11 and SH12 corresponding to being screwed to the first support plate 1111 of the first frame 111.

[0232] The portion of the third plate 63 including the screw holes SH11 or SH12 (also referred to as the screw hole area) may not overlap with the first plate 61. For example, the first plate 61 can include an opening (e.g., a cutout-shaped opening in the illustrated example), which is aligned to correspond to the portion of the third plate 63 including the screw holes. The plurality of screw holes SH11 and SH12 in the third plate 63 can be provided at positions where the first plate assembly PA1 and the first support plate 1111 of the first frame 111 can be stably and firmly joined by screw fastening.

[0233] Although not shown separately, the first plate 61 can include a first screw hole, and the third plate 63 can include a second screw hole aligned with the first screw hole. The first plate 61 and the third plate 63 can be joined to the first support plate 1111 of the first frame 111 by screw fastening, where the first screw hole and the second screw hole correspond to each other.

[0234] The first plate assembly PA1 can be at least partially disposed between the first hinge module 141 and the third hinge module 143.

[0235] One side region of the first plate assembly PA1 corresponding to the first hinge module 141 can be supported by the first hinge module 141. A part of the first hinge module 141 (e.g., a part of the first bracket 1411) can be located between the one side region of the first plate assembly PA1 and the first support plate 1111 of the first frame 111, and can support the one side region of the first plate assembly PA1.

[0236] The other region of the first plate assembly PA1 corresponding to the third hinge module 143 can be supported by the third hinge module 143. A part of the third hinge module 143 (for example, a part of the first slider 1431) can be located between the other region of the first plate assembly PA1 and the first support plate 1111 of the first frame 111, and can support the other region of the first plate assembly PA1.

[0237] Although not shown separately, the first plate assembly PA1 can be screwed and fastened to the first hinge module 141 or the third hinge module 143. For example, a side region of the first plate assembly PA1 that overlaps and is supported by the first hinge module 141 can be screwed and fastened to the first hinge module 141. For example, the other side region of the first plate assembly PA1 that overlaps and is supported by the third hinge module 143 can be screwed and fastened to the third hinge module 143.

[0238] Instead of being screwed and fastened between the first plate assembly PA1 and the first support plate 1111 of the first frame 111, the first plate assembly PA1 can be operably connected to the first hinge module 141 and the third hinge module 143. When the foldable electronic device 1 switches between the unfolded state and the folded state, the first plate assembly PA1 can move in response to the movement of the first hinge module 141 and the third hinge module 143.

[0239] The hinge 14 can include a third plate assembly PA3, and the third plate assembly PA3 includes a combination of a fifth plate 65 and a seventh plate 67. The third plate assembly PA3 can be defined or interpreted as a plate-shaped support member, where the fifth plate 65 and the seventh plate 67 overlap and are coupled to each other.

[0240] The third plate assembly PA3 can be disposed on the first support plate 1111 of the first frame 111 or coupled to the first support plate 1111 of the first frame 111. The third plate assembly PA3 can be disposed on or coupled to the first support region 1111A of the first support plate 1111 by, for example, screw fastening. The third plate assembly PA3 can be implemented to be at least partially the same as, substantially the same as, or at least partially similar to the first plate assembly PA1.

[0241] The third plate assembly PA3 can be spaced apart from the first plate assembly PA1 in the direction of the center line A of the foldable electronic device 1.

[0242] The third plate assembly PA3 can be at least partially disposed between the second hinge module 142 and the third hinge module 143.

[0243] A side region of the third board assembly PA3 corresponding to the second hinge module 142 can be supported by the second hinge module 142. A part of the second hinge module 142 (e.g., a part of the fourth bracket 1422) can be located between the side region of the third board assembly PA3 and the first support plate 1111 of the first frame 111, and can support the side region of the third board assembly PA3.

[0244] Another side region of the third board assembly PA3 corresponding to the third hinge module 143 can be supported by the third hinge module 143. A part of the third hinge module 143 (e.g., a part of the first slider 1431) can be located between the another side region of the third board assembly PA3 and the first support plate 1111 of the first frame 111, and can support the another side region of the third board assembly PA3.

[0245] The third board assembly PA3 can be connected to the second hinge module 142 or the third hinge module 143 by screw fastening. For example, a side region of the third board assembly PA3 that overlaps and is supported by the second hinge module 142 can be connected to the second hinge module 142 by screw fastening. For example, another side region of the third board assembly PA3 that overlaps and is supported by the third hinge module 143 can be connected to the third hinge module 143 by screw fastening.

[0246] Instead of screw fastening between the third board assembly PA3 and the first support plate 1111 of the first frame 111, the third board assembly PA3 can be operably connected to the second hinge module 142 and the third hinge module 143. When the foldable electronic device 1 switches between the unfolded state and the folded state, the third board assembly PA3 can move in response to the movement of the second hinge module 142 and the third hinge module 143.

[0247] The hinge 14 can include a second board assembly PA2, and the second board assembly PA2 includes a combination of a second board 62 and a fourth board 64. The second board assembly PA2 can be defined or interpreted as a plate-shaped support member, where the second board 62 and the fourth board 64 overlap and are connected to each other.

[0248] The second board assembly PA2 can be disposed on or connected to the second support plate 1211 of the second frame 121. The second board assembly PA2 can be disposed on or connected to the second support region 1211A of the second support plate 1211 by, for example, screw fastening.

[0249] The second board 62 and / or the fourth board 64 can include a metallic material.

[0250] The second plate 62 and / or the fourth plate 64 may include stainless steel, titanium, amorphous alloy, or a metal-ceramic composite material (such as cermet).

[0251] The second plate 62 and / or the fourth plate 64 may include magnesium, magnesium alloy, aluminum, aluminum alloy, zinc alloy, or copper alloy. The second plate 62 and / or the fourth plate 64 may include various other metallic materials.

[0252] The second plate 62 and the fourth plate 64 may include the same metallic material.

[0253] The second plate 62 and the fourth plate 64 may include different metallic materials.

[0254] The second plate 62 may include the same metallic material as the first plate 61.

[0255] The fourth plate 64 may include the same metallic material as the third plate 63.

[0256] The second plate 62 and the fourth plate 64 may have substantially different thicknesses. For example, the fourth plate 64 may have a greater thickness than the second plate 62.

[0257] The second plate 62 and the fourth plate 64 may have substantially the same thickness.

[0258] Compared with the second plate 62, the fourth plate 64 may be configured to have a greater impact on ensuring the rigidity of the second plate assembly PA2.

[0259] The second plate 62 may be provided with substantially the same thickness as the first plate 61.

[0260] The fourth plate 64 may be provided with substantially the same thickness as the third plate 63.

[0261] The second plate 62 and the fourth plate 64 may be joined by welding.

[0262] The second plate 62 and the fourth plate 64 may be joined via an adhesive material (or bonding material) (not shown separately).

[0263] The second plate 62 and the fourth plate 64 may be joined by various other methods (not shown separately).

[0264] The second plate 62 and / or the fourth plate 64 may include a polymer such as an engineering plastic.

[0265] The fourth plate 64 may be at least partially located between the second plate 62 and the second support plate 1211 of the second frame 121.

[0266] The fourth plate 64 may include a plurality of screw holes SH21 and SH22 corresponding to being screwed to the second support plate 1211 of the second frame 121.

[0267] The portion of the fourth plate 64 including the screw holes SH21 or SH22 (also referred to as the screw hole region) may not overlap with the second plate 62. For example, the second plate 62 may include an opening (e.g., a cut-shaped opening in the illustrated example), which is aligned to correspond to the portion of the fourth plate 64 including the screw holes. The plurality of screw holes SH21 and SH22 in the fourth plate 64 may be provided at positions where the second plate assembly PA2 and the second support plate 1211 of the second frame 121 can be stably and firmly connected by screw fastening.

[0268] Although not shown separately, the second plate 62 may include a third screw hole, and the fourth plate 64 may include a fourth screw hole aligned with the third screw hole. The second plate 62 and the fourth plate 64 may be coupled to the second support plate 1211 of the second frame 121 by screw fastening in which the third screw hole and the fourth screw hole correspond to each other.

[0269] The second plate assembly PA2 may be at least partially disposed between the first hinge module 141 and the third hinge module 143.

[0270] One side region of the second plate assembly PA2 corresponding to the first hinge module 141 may be supported by the first hinge module 141. A part of the first hinge module 141 (e.g., a part of the second bracket 1412) may be located between the one side region of the second plate assembly PA2 and the second support plate 1211 of the second frame 121, and may support the one side region of the second plate assembly PA2.

[0271] The other side region of the second plate assembly PA2 corresponding to the third hinge module 143 may be supported by the third hinge module 143. A part of the third hinge module 143 (e.g., a part of the second slider 1432) may be located between the other side region of the second plate assembly PA2 and the second support plate 1211 of the second frame 121, and may support the other side region of the second plate assembly PA2.

[0272] Although not shown separately, the second plate assembly PA2 may be connected to the first hinge module 141 or the third hinge module 143 by screw fastening. For example, one side region of the second plate assembly PA2 that overlaps and is supported by the first hinge module 141 may be coupled to the first hinge module 141 by screw fastening. For example, one side region of the second plate assembly PA2 that overlaps and is supported by the third hinge module 143 may be coupled to the third hinge module 143 by screw fastening.

[0273] Instead of screw fastening between the second board assembly PA2 and the second support plate 1211 of the second frame 121, the second board assembly PA2 can be operably connected to the first hinge module 141 and the third hinge module 143. When the foldable electronic device 1 switches between the unfolded state and the folded state, the second board assembly PA2 can move in response to the movement of the first hinge module 141 and the third hinge module 143.

[0274] The hinge 14 can include a fourth board assembly PA4, and the fourth board assembly PA4 includes a combination of a sixth board 66 and an eighth board 68. The fourth board assembly PA4 can be defined or interpreted as a plate-shaped support member, where the sixth board 66 and the eighth board 68 overlap and are coupled to each other.

[0275] The fourth board assembly PA4 can be disposed on the second support plate 1211 of the second frame 121 or coupled to the second support plate 1211 of the second frame 121. The fourth board assembly PA4 can be disposed on or coupled to the second support area 1211A of the second support plate 1211 by, for example, screw fastening.

[0276] The fourth board assembly PA4 can be implemented to be at least partially the same as, substantially the same as, or at least partially similar to the second board assembly PA2.

[0277] The fourth board assembly PA4 can be spaced apart from the second board assembly PA2 in the direction of the center line A of the foldable electronic device 1.

[0278] The fourth board assembly PA4 can be at least partially disposed between the second hinge module 142 and the third hinge module 143.

[0279] One side area of the fourth board assembly PA4 corresponding to the second hinge module 142 can be supported by the second hinge module 142. A part of the second hinge module 142 (for example, a part of the third bracket 1421) can be located between the one side area of the fourth board assembly PA4 and the second support plate 1211 of the second frame 121, and can support the one side area of the fourth board assembly PA4.

[0280] The other side area of the fourth board assembly PA4 corresponding to the third hinge module 143 can be supported by the third hinge module 143. A part of the third hinge module 143 (for example, a part of the second slider 1432) can be located between the other side area of the fourth board assembly PA4 and the second support plate 1211 of the second frame 121, and can support the other side area of the fourth board assembly PA4.

[0281] Although not shown separately, the fourth plate assembly PA4 can be fastened and connected to the second hinge module 142 or the third hinge module 143 by screws. For example, one side region of the fourth plate assembly PA4 that overlaps with and is supported by the second hinge module 142 can be fastened and coupled to the second hinge module 142 by screws. For example, the other side region of the fourth plate assembly PA4 that overlaps with and is supported by the third hinge module 143 can be fastened and coupled to the third hinge module 143 by screws.

[0282] Instead of being fastened by screws between the fourth plate assembly PA4 and the second support plate 1211 of the second frame 121, the fourth plate assembly PA4 can be operably connected to the second hinge module 142 and the third hinge module 143. When the foldable electronic device 1 switches between the unfolded state and the folded state, the fourth plate assembly PA4 can move in response to the movement of the second hinge module 142 and the third hinge module 143.

[0283] In the unfolded state of the foldable electronic device 1, the first hinge module 141, the second hinge module 142, the third hinge module 143, the first plate assembly PA1, and the third plate assembly PA3 can support one side region of the third display area 153 of the first display module 15 with respect to the center line A of the foldable electronic device 1. The first plate assembly PA1 can support the portion of the third display area 153 of the first display module 15 corresponding to the space between the first hinge module 141 and the third hinge module 143. The third plate assembly PA3 can support the portion of the third display area 153 of the first display module 15 corresponding to the space between the second hinge module 142 and the third hinge module 143.

[0284] In the unfolded state of the foldable electronic device 1, the first hinge module 141, the second hinge module 142, the third hinge module 143, the second plate assembly PA2, and the fourth plate assembly PA4 can support the other side region of the third display area 153 of the first display module 15 with respect to the center line A of the foldable electronic device 1. The second plate assembly PA2 can support the portion of the third display area 153 of the first display module 15 corresponding to the space between the first hinge module 141 and the third hinge module 154. The fourth plate assembly PA4 can support the portion of the third display area 153 of the first display module 15 corresponding to the space between the second hinge module 142 and the third hinge module 143.

[0285] In the unfolded state of the foldable electronic device 1, even when an external force (e.g., an external pressure such as a touch input using a user's finger or a touch input using a stylus) is applied to the third display area 153 of the first display module 15, the third display area 153 can remain substantially flat by being supported by the first hinge module 141, the second hinge module 142, the third hinge module 143, the first plate assembly PA1, the second plate assembly PA2, the third plate assembly PA3, and the fourth plate assembly PA4. In the unfolded state of the foldable electronic device 1, the first hinge module 141, the second hinge module 142, the third hinge module 143, the first plate assembly PA1, the second plate assembly PA2, the third plate assembly PA3, and the fourth plate assembly PA4 can reduce or prevent sagging or creasing of the third display area 153.

[0286] The first plate assembly PA1 may include a first surface 601 that supports the third display area 153 of the first display module 15 in the unfolded state of the foldable electronic device 1. The first surface 601 may be provided by, for example, the first plate 61. The first surface 601 may include a flat surface that can support the third display area 153 in the unfolded state of the foldable electronic device 1.

[0287] The second plate assembly PA2 may include a second surface 602 that supports the third display area 153 of the first display module 15 in the unfolded state of the foldable electronic device 1. The second surface 602 may be provided by, for example, the second plate 62. The second surface 602 may include a flat surface that can support the third display area 153 in the unfolded state of the foldable electronic device 1.

[0288] The first surface 601 of the first plate assembly PA1 and the second surface 602 of the second plate assembly PA2 may face each other in the folded state of the foldable electronic device 1.

[0289] The first surface 601 of the first plate assembly PA1 and the second surface 602 of the second plate assembly PA2 may form an angle of approximately 180 degrees therebetween in the unfolded state of the foldable electronic device 1.

[0290] The third plate assembly PA3 may include a third surface 603 that supports the third display area 153 of the first display module 15 in the unfolded state of the foldable electronic device 1. The third surface 603 may be provided by, for example, the fifth plate 65. The third surface 603 may include a flat surface that can support the third display area 153 in the unfolded state of the foldable electronic device 1.

[0291] The first surface 601 of the first plate assembly PA1 and the third surface 603 of the third plate assembly PA3 may be provided such that there is no substantial height difference.

[0292] The fourth board assembly PA4 may include a fourth surface 604 that supports the third display area 153 of the first display module 15 in the unfolded state of the foldable electronic device 1. The fourth surface 604 may be provided by, for example, the sixth board 66. The fourth surface 604 may include a flat surface that can support the third display area 153 in the unfolded state of the foldable electronic device 1.

[0293] The second surface 602 of the second board assembly PA2 and the fourth surface 604 of the fourth board assembly PA4 may be provided such that there is no substantial height difference.

[0294] The third surface 603 of the third board assembly PA3 and the fourth surface 604 of the fourth board assembly PA4 may face each other in the folded state of the foldable electronic device 1.

[0295] In the unfolded or folded state of the foldable electronic device 1, the angle formed by the first surface 601 of the first board assembly PA1 and the second surface 602 of the second board assembly PA2 may be substantially the same as the angle formed by the third surface 603 of the third board assembly PA3 and the fourth surface 604 of the fourth board assembly PA4.

[0296] In the unfolded state of the foldable electronic device 1, the first surface 601 of the first board assembly PA1, the second surface 602 of the second board assembly PA2, the third surface 603 of the third board assembly PA3, and the fourth surface 604 of the fourth board assembly PA4 may be provided such that there is no substantial height difference with respect to the surface of the first hinge module 141 that supports the third display area 153 of the first display module 15, the surface of the second hinge module 142 that supports the third display area 153, and the surface of the third hinge module 143 that supports the third display area 153.

[0297] The hinge 14 may be configured to provide a space in which the third display area 153 of the first display module 15 may be disposed in a curved shape that can reduce bending stress when the foldable electronic device 1 is switched from the unfolded state to the folded state. The hinge 14 may be configured to provide a space in which the third display area 153 may be disposed in a curved shape that can suppress buckling when the foldable electronic device 1 is switched from the unfolded state to the folded state. For example, when the foldable electronic device 1 is switched from the unfolded state to the folded state, the third display area 153 may be disposed in a droplet shape or a dumbbell shape that can reduce breakage or permanent deformation.

[0298] The first flexible printed circuit board 7 can extend from the first connector 7A to the second connector 7B. The first connector 7A can be electrically connected to a first electrical component (e.g., a first printed circuit board) (not shown separately) provided on the first frame 111. The second connector 7B can be electrically connected to a second electrical component (e.g., a second printed circuit board) (not shown separately) provided on the second frame 121.

[0299] The second flexible printed circuit board 8 can extend from the third connector 8A to the fourth connector 8B. The third connector 8A can be electrically connected to a first electrical component (e.g., a first printed circuit board) (not shown separately) provided on the first frame 111. The fourth connector 8B can be electrically connected to a second electrical component (e.g., a second printed circuit board) (not shown separately) provided on the second frame 121.

[0300] The first flexible printed circuit board 7 and the second flexible printed circuit board 8 can be disposed across the hinge 14.

[0301] The first support plate 1111 of the first frame 111 can include a first opening (or a first through hole) 311. The first opening 311 can penetrate between a first support region 1111A and a third support region 1111B of the first support plate 1111. The second support plate 1211 of the second frame 121 can include a second opening (or a second through hole) 312. The second opening 312 can penetrate between a second support region 1211A and a fourth support region 1211B of the second support plate 1211. The first flexible printed circuit board 7 can pass through the first opening 311 and the second opening 312.

[0302] The first opening 311 and the second opening 312 can overlap and align with each other in the folded state of the foldable electronic device 1.

[0303] The first support plate 1111 of the first frame 111 can include a third opening (or a third through hole) 313. The third opening 313 can penetrate between the first support region 1111A and the third support region 1111B of the first support plate 1111. The second support plate 1211 of the second frame 121 can include a fourth opening (or a fourth through hole) 314. The fourth opening 314 can penetrate between the second support region 1211A and the fourth support region 1211B of the second support plate 1211. The second flexible printed circuit board 8 can pass through the third opening 313 and the fourth opening 314.

[0304] The third opening 313 and the fourth opening 314 can overlap and align with each other in the folded state of the foldable electronic device 1.

[0305] The first opening 311 and the third opening 313 can be spaced apart from each other in the direction of the center line A (e.g., the y-axis direction) of the foldable electronic device 1 and be substantially aligned with each other.

[0306] The second opening 312 and the fourth opening 314 can be spaced apart from each other in the direction of the center line A of the foldable electronic device 1 and be substantially aligned with each other.

[0307] The first flexible printed circuit board 7 can include a first region 71, a second region 72, and / or a third region 73 disposed between the first region 71 and the second region 72. The third region 73 can extend the first region 71 and the second region 72. The first region 71 can extend from the third region 73 to the first connector 7A. The second region 72 can extend from the third region 73 to the second connector 7B. The first region 71, the second region 72, and the third region 73 can be substantially flexible.

[0308] The first region 71 of the first flexible printed circuit board 7 can pass through the first opening 311 in the first frame 111. The second region 72 of the first flexible printed circuit board 7 can pass through the second opening 312 in the second frame 121.

[0309] The first flexible printed circuit board 7 can include a first fixed portion F1 and a second fixed portion F2. The first fixed portion F1 can be provided (or formed) between the first region 71 and the third region 73 or at the boundary between the first region 71 and the third region 73. The second fixed portion F2 can be provided (or formed) between the second region 72 and the third region 73 or at the boundary between the second region 72 and the third region 73. The third region F3 can actually refer to the portion that extends the first fixed portion F1 and the second fixed portion F2 of the first flexible printed circuit board 7 between the first fixed portion F1 and the second fixed portion F2.

[0310] The first fixed portion F1 and / or the second fixed portion F2 of the first flexible printed circuit board 7 can be configured to be less flexible than other portions of the first flexible printed circuit board 7. The first fixed portion F1 and / or the second fixed portion F2 can be substantially rigid. The first fixed portion F1 can be rigid by including a first reinforcing portion (or a first reinforcing member or a first reinforcing structure) such as a reinforcing member. The second fixed portion F2 can be rigid by including a second reinforcing portion (or a second reinforcing member or a second reinforcing structure) such as a reinforcing member. The first fixed portion F1 can be referred to as the first rigid portion, and the second fixed portion F2 can be referred to as the second rigid portion.

[0311] The first fixing portion F1 and / or the second fixing portion F2 of the first flexible printed circuit board 7 can be implemented to be substantially rigid and flat. The first fixing portion F1 and / or the second fixing portion F2 can be substantially rigid and flat by including, for example, a reinforcing plate (or reinforcing film or reinforcing layer) (e.g., a reinforcing member). The reinforcing plate can include, for example, FR4 (e.g., a glass-reinforced epoxy laminate) or polyimide (PI).

[0312] The first fixing portion F1 and / or the second fixing portion F2 of the first flexible printed circuit board 7 can be configured to have a thickness greater than that of other portions of the first flexible printed circuit board 7. In an embodiment, the first fixing portion F1 and / or the second fixing portion F2 can have more laminated layers than the laminated layers in other portions of the first flexible printed circuit board 7. This can allow the first fixing portion F1 and / or the second fixing portion F2 to be configured to be less flexible than other portions of the first flexible printed circuit board 7.

[0313] The first flexible printed circuit board 7 can be implemented as a rigid-FPCB (RFPCB), and the first fixing portion F1 and / or the second fixing portion F2 can be substantially rigid without a separate reinforcing portion.

[0314] The first fixing portion F1 of the first flexible printed circuit board 7 can be disposed on or coupled to the first board assembly PA1 by mechanical fastening such as bonding or screw fastening including an adhesive material or a binding material. The first fixing portion F1 can include, for example, at least one screw hole for screw fastening to the first board assembly PA1.

[0315] The second fixing portion F2 of the first flexible printed circuit board 7 can be disposed on or coupled to the second board assembly PA2 by mechanical fastening such as bonding or screw fastening including an adhesive material or a binding material. The second fixing portion F2 can include, for example, at least one screw hole for screw fastening to the second board assembly PA2.

[0316] When the foldable electronic device 1 switches between the unfolded state and the folded state, the relative position between the first fixing portion F1 and the second fixing portion F2 can change, and the third region 73 of the first flexible printed circuit board 7 can be set to a shape corresponding to the relative position between the first fixing portion F1 and the second fixing portion F2.

[0317] The second flexible printed circuit board 8 may include a fourth region 81, a fifth region 82, and / or a sixth region 83 disposed between the fourth region 81 and the fifth region 82. The sixth region 83 may extend the fourth region 81 and the fifth region 82. The fourth region 81 may extend from the sixth region 83 to the third connector 8A. The fifth region 82 may extend from the sixth region 83 to the fourth connector 8B. The fourth region 72, the fifth region 75, and the sixth region 76 may be substantially flexible.

[0318] The fourth region 81 of the second flexible printed circuit board 8 may pass through the first opening 313 in the first frame 111. The fifth region 82 of the second flexible printed circuit board 8 may pass through the fourth opening 314 in the second frame 121.

[0319] The second flexible printed circuit board 8 may include a third fixing portion F3 and a fourth fixing portion F4. The third fixing portion F3 may be provided (or formed) at or between the boundary between the fourth region 81 and the sixth region 83. The fourth fixing portion F4 may be provided (or formed) at or between the boundary between the fifth region 82 and the sixth region 83. The sixth region F6 may actually refer to the portion that extends the third fixing portion F3 and the fourth fixing portion F4 of the second flexible printed circuit board 8 between the third fixing portion F3 and the fourth fixing portion F4.

[0320] The third fixing portion F3 and / or the fourth fixing portion F4 of the second flexible printed circuit board 8 may be configured to be less flexible than other portions of the second flexible printed circuit board 8. The third fixing portion F3 and / or the fourth fixing portion F4 may be substantially rigid. The third fixing portion F3 may be rigid by including a third reinforcing portion (or third reinforcing member or third reinforcing structure) such as a reinforcing member. The fourth fixing portion F4 may be rigid by including a fourth reinforcing portion (or fourth reinforcing member or fourth reinforcing structure) such as a reinforcing member. The third fixing portion F3 may be referred to as the third rigid portion, and the fourth fixing portion F4 may be referred to as the fourth rigid portion.

[0321] The third fixing portion F3 and / or the fourth fixing portion F4 of the second flexible printed circuit board 8 may be implemented as substantially rigid and flat. The third fixing portion F3 and / or the fourth fixing portion F4 may be substantially rigid and flat by including, for example, a reinforcing plate (or reinforcing film or reinforcing layer) (e.g., a reinforcing member). The reinforcing plate may include, for example, FR4 or PI.

[0322] The third fixing portion F3 and / or the fourth fixing portion F4 of the second flexible printed circuit board 8 may be configured to have a greater thickness than other portions of the second flexible printed circuit board 8. In an embodiment, the third fixing portion F3 and / or the fourth fixing portion F4 may have more laminated layers than the laminated layers in other portions of the second flexible printed circuit board 8. This may allow the third fixing portion F3 and / or the fourth fixing portion F4 to be configured to be less flexible than other portions of the second flexible printed circuit board 8.

[0323] The second flexible printed circuit board 8 may be implemented as an RFPCB, and the third fixing portion F3 and / or the fourth fixing portion F4 may be substantially rigid without a separate reinforcing portion.

[0324] The third fixing portion F3 of the second flexible printed circuit board 8 may be disposed on or coupled to the third board assembly PA3 by mechanical fastening such as bonding or screw fastening including an adhesive material or a binding material. The third fixing portion F3 may include, for example, at least one screw hole for screw fastening to the third board assembly PA3.

[0325] The fourth fixing portion F4 of the second flexible printed circuit board 8 may be disposed on or coupled to the fourth board assembly PA4 by mechanical fastening such as bonding or screw fastening including an adhesive material or a binding material. The fourth fixing portion F4 may include, for example, at least one screw hole for threaded fastening to the fourth board assembly PA4.

[0326] When the foldable electronic device 1 switches between the unfolded state and the folded state, the relative position between the third fixing portion F3 and the fourth fixing portion F4 may change, and the sixth region 83 of the second flexible printed circuit board 8 may be set to a shape corresponding to the relative position between the third fixing portion F3 and the fourth fixing portion F4.

[0327] The second surface area 13A of the hinge housing 13 may include a fourth recess R4 corresponding to the third region 73 of the first flexible printed circuit board 7. The second surface area 13A of the hinge housing 13 may include a fifth recess R5 corresponding to the sixth region 83 of the second flexible printed circuit board 8. The fourth recess R4 may be located between the first recess R1 and the third recess R3. The fifth recess R5 may be located between the second recess R2 and the third recess R3.

[0328] When the foldable electronic device 1 is switched from the folded state to the unfolded state, the third region 73 of the first flexible printed circuit board 7 may be inserted from the outside of the fourth recess R4 of the hinge housing 13 into the fourth recess R4 or may be inserted into the fourth recess R4 to a greater extent than in the folded state of the foldable electronic device 1. For example, when the foldable electronic device 1 is switched from the unfolded state to the folded state, the third region 73 of the first flexible printed circuit board 7 may be located outside the fourth recess R4 of the hinge housing 13.

[0329] In the unfolded state of the foldable electronic device 1, the surface of the fourth recess R4 of the hinge housing 13 may support the third region 73 of the first flexible printed circuit board 7. When the foldable electronic device 1 is switched from the folded state to the unfolded state, the third region 73 of the first flexible printed circuit board 7 may be deformed while being supported by the surface of the fourth recess R4 of the hinge housing 13. The fourth recess R4 may be configured to reduce the bending stress in the third region 73 of the first flexible printed circuit board 7 in the unfolded state of the foldable electronic device 1.

[0330] When the foldable electronic device 1 is switched from the folded state to the unfolded state, the sixth region 83 of the second flexible printed circuit board 8 may be inserted from the outside of the fifth recess R5 of the hinge housing 13 into the fifth recess R5 or may be inserted into the fifth recess R5 to a greater extent than in the folded state of the foldable electronic device 1. For example, when the foldable electronic device 1 is switched from the unfolded state to the folded state, the sixth region 83 of the second flexible printed circuit board 8 may be located outside the fifth recess R5 of the hinge housing 13.

[0331] In the unfolded state of the foldable electronic device 1, the surface of the fifth recess R5 of the hinge housing 13 may support the sixth region 83 of the second flexible printed circuit board 8. When the foldable electronic device 1 is switched from the folded state to the unfolded state, the sixth region 83 of the second flexible printed circuit board 8 may be deformed while being supported by the surface of the fifth recess R5 of the hinge housing 13. The fifth recess R5 may be configured to reduce the bending stress in the sixth region 83 of the second flexible printed circuit board 8 in the unfolded state of the foldable electronic device 1.

[0332] The third plate 63 of the first plate assembly PA1 may include an opening 63H corresponding to the first fixed portion F1 of the first flexible printed circuit board 7. The first fixed portion F1 may be inserted into the opening 63H in the third plate 63 and coupled to the first plate 61 of the first plate assembly PA1.

[0333] The first plate 61 of the first plate assembly PA1 may include an opening 61H and screw holes SH31 and SH32 corresponding to the first fixing portion F1 of the first flexible printed circuit board 7. A part of the first fixing portion F1 may be inserted into the opening 61H in the first plate 61. The first fixing portion F1 inserted into the opening 63H in the third plate 63 may be coupled to the first plate 61 by screwing corresponding to the screw holes SH31 and SH32.

[0334] The portion of the first plate 61 including the opening 61H and the screw holes SH31 and SH32 may be coupled to the first fixing portion F1 of the first flexible printed circuit board 7 and may cover the opening 63H in the third plate 63 to provide a partial surface area of the first surface 601 supporting the third display area 153 of the first display module 15.

[0335] The fourth plate 64 of the second plate assembly PA2 may include an opening 64H corresponding to the second fixing portion F2 of the first flexible printed circuit board 7. The second fixing portion F2 may be inserted into the opening 64H in the fourth plate 64 and coupled to the second plate 62 of the second plate assembly PA2.

[0336] The second plate 62 of the second plate assembly PA2 may include an opening 62H and screw holes SH41 and SH42 corresponding to the second fixing portion F2 of the first flexible printed circuit board 7. A part of the second fixing portion F2 may be inserted into the opening 62H in the second plate 62. The second fixing portion F2 inserted into the opening 64H in the fourth plate 64 may be coupled to the second plate 62 by screwing corresponding to the screw holes SH41 and SH42.

[0337] The portion of the second plate 62 including the opening 62H and the screw holes SH41 and SH42 may be coupled to the second fixing portion F2 of the first flexible printed circuit board 7 and may cover the opening 64H in the fourth plate 64 to provide a partial surface area of the first surface 602 supporting the third display area 153 of the first display module 15.

[0338] The seventh plate 67 of the third plate assembly PA3 may include an opening 67H corresponding to the third fixing portion F3 of the second flexible printed circuit board 8. The third fixing portion F3 may be inserted into the opening 67H in the seventh plate 67 and coupled to the fifth plate 65 of the third plate assembly PA3.

[0339] The fifth plate 65 of the third board assembly PA3 may include an opening 65H corresponding to the third fixed portion F3 of the second flexible printed circuit board 8, as well as screw holes SH51 and SH52. A part of the third fixed portion F3 may be inserted into the opening 65H in the fifth plate 65. The third fixed portion F3 inserted into the opening 67H in the seventh plate 67 may be coupled to the fifth plate 65 by screwing corresponding to the screw holes SH51 and SH52.

[0340] The portion of the fifth plate 65 including the opening 65H and the screw holes SH51 and SH52 may be coupled to the third fixed portion F3 of the second flexible printed circuit board 8, and may cover the opening 67H in the seventh plate 67 to provide a partial surface area of the third surface 603 supporting the third display area 153 of the first display module 15.

[0341] The eighth plate 68 of the fourth board assembly PA4 may include an opening 68H corresponding to the fourth fixed portion F4 of the second flexible printed circuit board 8. The fourth fixed portion F4 may be inserted into the opening 68H in the eighth plate 68 and coupled to the sixth plate 66 of the fourth board assembly PA4.

[0342] The sixth plate 66 of the fourth board assembly PA4 may include an opening 66H corresponding to the fourth fixed portion F4 of the second flexible printed circuit board 8, as well as screw holes SH61 and SH62. A part of the fourth fixed portion F4 may be inserted into the opening 66H in the sixth plate 66. The fourth fixed portion F4 inserted into the opening 68H in the eighth plate 68 may be coupled to the sixth plate 66 by screwing corresponding to the screw holes SH61 and SH62.

[0343] The portion of the sixth plate 66 including the opening 66H and the screw holes SH61 and SH62 may be coupled to the fourth fixed portion F4 of the second flexible printed circuit board 8, and may cover the opening 68H in the eighth plate 68 to provide a partial surface area of the fourth surface 604 supporting the third display area 153 of the first display module 15.

[0344] Figure 7 is a view showing a part of the foldable electronic device 1 in an unfolded state according to an embodiment of the present disclosure. Figure 8 is along the foldable electronic device 1 in an unfolded state according to an embodiment of the present disclosure Figure 7 cross-sectional view taken along line E-E' in. Figure 9 is a cross-sectional view of the foldable electronic device 1 according to an embodiment of the present disclosure. Figure 10 and Figure 11 is a view showing the second board assembly PA2 according to an embodiment of the present disclosure. Figure 12 is along the second board assembly PA2 according to an embodiment of the present disclosure Figure 10The cross-sectional view taken along the line G-G' in

[0345] Referring to Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 , the foldable electronic device 1 may include a first support plate 1111, a second support plate 1211, a first display module 15, a first hinge module 141, a third hinge module 143, a first plate 61, a second plate 62, a third plate 63, a fourth plate 64, a hinge housing 13, a first flexible printed circuit board 7, a first sealing member 91 and / or a second sealing member 92. The description of some components having the same reference numerals as those shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 will be omitted.

[0346] The first support plate 1111 may include a first cover region 1001 of a fourth side surface portion B4 that extends a first side 1112 (see Figure 3 ). In the unfolded state of the foldable electronic device 1, the first cover region 1001 may be positioned relative to the hinge housing 13 to cover a part of the hinge housing 13 with respect to the center line A (see Figure 1 ) of the foldable electronic device 1. In the folded state of the foldable electronic device 1, the first cover region 1001 may be positioned relative to the hinge housing 13 so as not to cover a part of the hinge housing 13 with respect to the center line A of the foldable electronic device 1.

[0347] The hinge housing 13 may include a third curved surface that is exposed to the outside with respect to the center line A (see Figure 1 ) of the foldable electronic device 1 in the folded state, and the first cover region 1001 of the first support plate 1111 may include a first curved surface 10011 corresponding to the third curved surface of the hinge housing 13.

[0348] The fourth side surface portion B4 may be defined or interpreted as including elements that are in the first cover region 1001 of the first support plate 1111 rather than the first side 1112 (see Figure 3 ).

[0349] The second support plate 1211 may include a second cover region 1002 of an eighth side surface portion B8 that extends a second side 1212 (see Figure 3 ). In the unfolded state of the foldable electronic device 1, the second cover region 1002 may be positioned relative to the hinge housing 13 to cover a part of the hinge housing 13 with respect to the center line A (seeFigure 1 ) part. In the folded state of the foldable electronic device 1, the second cover area 1002 can be positioned relative to the hinge housing 13 so as not to cover a part of the hinge housing 13 with respect to the center line A of the foldable electronic device 1.

[0350] The hinge housing 13 can include a fourth curved surface that is exposed to the outside with respect to the center line A of the foldable electronic device 1 in the folded state of the foldable electronic device 1 (see Figure 1 ), and the second cover area 1002 of the second support plate 1211 can include a second curved surface 10021 corresponding to the fourth curved surface of the hinge housing 13.

[0351] The eighth side surface portion B8 can be defined or interpreted as an element included in the second cover area 1002 of the second support plate 1211 rather than the second side 1212 (see Figure 3 ).

[0352] The combination of the first curved surface 10011 of the first support plate 1111 and the second curved surface 10021 of the second support plate 1211 can provide a recess in which the hinge housing 13 is located in the unfolded state of the foldable electronic device 1.

[0353] The first cover area 1001 can be provided as a separate member configured to be coupled to the first frame 111 (see Figure 4 ) or the first support plate 1111. The second cover area 1002 can be provided as a separate member configured to be coupled to the second frame 121 (see Figure 4 ).

[0354] The first fixing portion F1 of the first flexible printed circuit board 7 can be inserted into the opening 63H in the third plate 63. A part of the first fixing portion F1 can be inserted into the opening 61H in the first plate 61. A part of the first fixing portion F1 can be assembled into the opening 61H in the first plate 61, for example.

[0355] The first fixing portion F1 of the first flexible printed circuit board 7 can be at least partially located between the first plate 61 and the first support plate 1111 (or the first cover area 1001). The first fixing portion F1 can be inserted into the opening 61H in the first plate 61 and coupled to the first plate 61. The first support plate 1111 (or the first cover area 1001) can support the first fixing portion F1 toward the first plate 61.

[0356] The second fixing portion F2 of the first flexible printed circuit board 7 can be inserted into the opening 64H in the fourth plate 64. A part of the second fixing portion F2 can be inserted into the opening 62H in the second plate 62. A part of the second fixing portion F2 can be assembled into the opening 62H in the second plate 62, for example.

[0357] The second fixing portion F2 of the first flexible printed circuit board 7 may be at least partially located between the second board 62 and the second support plate 1211 (or the second cover area 1002). The second fixing portion F2 may be inserted into the opening 62H in the second board 62 and coupled to the second board 62. The second support plate 1211 (or the second cover area 1002) may support the second fixing portion F2 toward the second board 62.

[0358] When the foldable electronic device 1 is switched from the folded state to the unfolded state, the third region 73 of the first flexible printed circuit board 7 may be inserted into the fourth recess R4 of the hinge housing 13. When the foldable electronic device 1 is switched from the folded state to the unfolded state, the third region 73 of the first flexible printed circuit board 7 may be deformed while being supported by the surface of the fourth recess R4 of the hinge housing 13. The fourth recess R4 may be configured to reduce the bending stress in the third region 73 of the first flexible printed circuit board 7 in the unfolded state of the foldable electronic device 1.

[0359] Although not shown separately, the second flexible printed circuit board 8 (see Figure 4 ) may be arranged relative to the third board assembly PA3 and the fourth board assembly PA4 in a manner that is substantially the same as or similar to the way the first flexible printed circuit board 7 is arranged relative to the first board assembly PA1 and the second board assembly PA2. The third fixing portion F3 of the second flexible printed circuit board 8 (see Figure 4 ) may be at least partially located between the fifth board 65 (see Figure 4 ) and the first support plate 1111 (or the first cover area 1001). The third fixing portion F3 may be inserted into the opening 65H in the fifth board 65 (see Figure 4 ) and coupled to the fifth board 65. The first support plate 1111 (or the first cover area 1001) may support the third fixing portion F3 toward the fifth board 65.

[0360] The second fixing portion F4 of the second flexible printed circuit board 8 (see Figure 4 ) may be at least partially located between the sixth board 66 (see Figure 4 ) and the second support plate 1211 (or the second cover area 1002). The fourth fixing portion F4 may be inserted into the opening 66H in the sixth board 66 (see Figure 4 ) and coupled to the sixth board 66. The second support plate 1211 (or the second cover area 1002) may support the fourth fixing portion F4 toward the fourth board 66.

[0361] The first region 71 of the first flexible printed circuit board 7 may pass through the first opening 311 in the first support plate 1111.

[0362] The first sealing member 91 can be placed in the first opening 311. For example, the first sealing member 91 can be provided by placing (filling) an adhesive material (such as a liquid gasket (cured-in-place gasket (CIPG))) in the first opening 311 and then curing the filled adhesive material (for example, by an optical reaction or a thermal reaction).

[0363] The first region 71 of the first flexible printed circuit board 7 can be fixed to the first support plate 1111 via the first sealing member 91.

[0364] The second region 72 of the first flexible printed circuit board 7 can pass through the second opening 312 in the second support plate 1211.

[0365] The second sealing member 92 can be placed in the second opening 312 in the second support plate 1211. For example, the second sealing member 92 can be provided by placing (filling) an adhesive material (such as a liquid gasket) in the second opening 312 and then curing the filled adhesive material (for example, by an optical reaction or a thermal reaction).

[0366] The second region 72 of the first flexible printed circuit board 7 can be fixed to the second support plate 1211 via the second sealing member 92.

[0367] The foldable electronic device 1 can include a third sealing member (not shown separately) placed in the third opening 313 (see Figure 4 ) in the first support plate 1111. The fourth region 81 (see Figure 4 ) can be fixed to the first support plate 1111 via the third sealing member. For example, the third sealing member can be provided by filling the third opening 313 (see Figure 4 ) with an adhesive material (such as a liquid gasket) and then curing the filled adhesive material (for example, by an optical reaction or a thermal reaction).

[0368] The foldable electronic device 1 can include a fourth sealing member (not shown separately) placed in the fourth opening 314 (see Figure 4 ) in the second support plate 1211. The fifth region 82 (see Figure 5 ) can be fixed to the second support plate 1211 via the fourth sealing member. For example, the fourth sealing member can be provided by filling the fourth opening 314 with an adhesive material (such as a liquid gasket) and then curing the filled adhesive material (for example, by an optical reaction or a thermal reaction).

[0369] The first sealing member 91 can include a first elastic member or a first flexible member, and the first elastic member or the first flexible member can be elastically placed in the first opening 311 in the first support plate 1111 that is penetrated by the first flexible printed circuit board 7.

[0370] The second sealing member 92 may include a second elastic member or a second flexible member, and the second elastic member or the second flexible member may be elastically placed in a second opening 312 in the first support plate 1211 through which the first flexible printed circuit board 7 passes.

[0371] A third sealing member (not shown separately) may include a third elastic member or a third flexible member, and the third elastic member or the third flexible member may be elastically placed in a third opening 313 in the first support plate 1111 (see Figure 4 ) through which the second flexible printed circuit board 8 passes.

[0372] A fourth sealing member (not shown separately) may include a fourth elastic member or a fourth flexible member, and the fourth elastic member or the fourth flexible member may be elastically placed in a fourth opening 314 in the second support plate 1211 (see Figure 4 ) through which the second flexible printed circuit board 8 passes.

[0373] The foldable electronic device 1 may include a first waterproof area (or a first waterproof space) and a third waterproof area (or a second waterproof space). The first waterproof area may be a space between a first display area 151 of the first display module 15 (see Figure 4 ) and the first frame 111 (see Figure 4 ). The third waterproof area may be a space between the first cover 112 (see Figure 1 ) and the first frame 111 (see Figure 4 ). A plurality of electrical components may be located in the first waterproof area and the third waterproof area. The first sealing member 91 placed in the first opening 311 in the first support plate 1111 and the third sealing member (not shown separately) placed in the third opening 313 in the first support plate 1111 (see Figure 4 ) may separate the first waterproof area and the third waterproof area. For example, the first sealing member 91 and the third sealing member may reduce the moisture flowing into the foldable electronic device 1, or prevent moisture from flowing (moving) from the first waterproof area to the third waterproof area or from the third waterproof area to the first waterproof area through the first opening 311 and / or the third opening 313 in the first support plate (see Figure 4 ).

[0374] The foldable electronic device 1 may include a second waterproof area (or a second waterproof space) and a fourth waterproof area (or a fourth waterproof space). The second waterproof area may be a space between a second display area 152 of the first display module 15 (see Figure 4 ) and the second frame 121 (see Figure 4 ). The fourth waterproof area may be a space between the second cover 122 (see Figure 1) and the space between the second frame 121 (see Figure 4 ). A plurality of electrical components may be located in the second waterproof area and the fourth waterproof area. The second sealing member 92 placed in the second opening 312 of the second support plate 1211 and the fourth sealing member (not shown separately) placed in the fourth opening 314 of the second support plate 1211 (see Figure 4 ) may separate the second waterproof area and the fourth waterproof area. For example, the second sealing member 92 and the fourth sealing member may reduce the moisture flowing into the foldable electronic device 1, or prevent moisture from flowing (moving) from the second waterproof area to the fourth waterproof area or from the fourth waterproof area to the second waterproof area through the second opening 312 and / or the fourth opening 314 in the second support plate 1211 (see Figure 4 ).

[0375] The first plate 61 may include a first end 61A which, when the foldable electronic device 1 is switched from the unfolded state to the folded state, is positioned to support the third region 73 of the first flexible printed circuit board 7.

[0376] The first end 61A of the first plate 61 may be in contact with the third region 73 of the first flexible printed circuit board 7 in the folded state of the foldable electronic device 1. For example, in the folded state of the foldable electronic device 1, the first end 61A of the first plate 61 may support the third region 73 of the first flexible printed circuit board 7. When the foldable electronic device 1 is switched from the unfolded state to the folded state, the third region 73 of the first flexible printed circuit board 7 may be deformed while being supported by the first end 61A of the first plate 61.

[0377] The surface of the first end 61A of the first plate 61 may include a first curved surface to inhibit or prevent damage (e.g., cracking) of the third region 73 of the first flexible printed circuit board 7. The first curved surface included in the first end 61A may help to arrange the third region 73 of the first flexible printed circuit board 7 while reducing the bending stress in the folded state of the foldable electronic device 1.

[0378] When the third region 73 of the first flexible printed circuit board 7 is supported and disposed on the first end portion 61A of the first plate 61, the first curved surface of the first end portion 61A of the first plate 61 can prevent the third region 73 of the first flexible printed circuit board 7 from bending with a radius of curvature equal to or less than the critical radius of curvature, thereby reducing or preventing damage to the third region 73. For example, in a comparative example in which the first end portion includes a curved surface and a curved surface having a radius of curvature equal to or less than the critical radius of curvature, the third region 73 of the first flexible printed circuit board 7 may include a portion supported by the first end portion and bent with a radius of curvature equal to or less than the critical radius of curvature. As a result, bending stress (e.g., yield stress) that causes damage or permanent deformation may occur in the third region 73. For example, in a comparative example in which the first end portion includes a curved surface and a curved surface having a radius of curvature equal to or less than the critical radius of curvature, the third region 73 of the first flexible printed circuit board 7 may include a portion supported by the first end portion and bent with a radius of curvature equal to or less than the critical radius of curvature. And when the foldable electronic device repeatedly switches between the unfolded state and the folded state, the bending stress occurring in the third region 73 may cause deterioration or loss of elasticity due to fatigue accumulation, thereby causing damage or permanent deformation in the third region 73.

[0379] When observed in a cross-section perpendicular to the center line A of the foldable electronic device 1, the first plate 61 may include a first flat surface section 611 and a first curved surface section 612. The first flat surface section 611 may support the third display region 153 ( Figure 4 ) of the first display module 15 to be flat in the unfolded state of the foldable electronic device 1. The first curved surface section 612 of the first plate 61 may bend and extend from the first flat surface section 611 to include a first curved surface. The first end portion 61A of the first plate 61 may include the first curved surface section 612.

[0380] The first end portion 61A of the first plate 61 may be formed to have a first curved surface by bending or hemming. The end portion 61A may also be referred to as a first bent end portion or a first hemmed end portion.

[0381] The illustrated example discloses forming the first end portion 61A having a first curved surface by bending or hemming the first plate 61 which is a metal plate, but the first end portion 61A having a first curved surface may be provided by various methods (such as attaching a separate bent member having a first curved surface to the first plate 61).

[0382] To reduce the influence of the first end portion 61A of the first plate 61 on the first flexible printed circuit board 7 (see Figure 7) The stress influence on the entire width W2 of the third region 73 extending in the direction of the center line A of the foldable electronic device 1, the first end portion 61A of the first plate 61 may have a width larger than the width W2 of the third region 73 of the first flexible printed circuit board 7.

[0383] When observed in a cross-section perpendicular to the center line A of the foldable electronic device 1, the third plate 63 may include a third end portion 63A surrounded by the first end portion 61A of the first plate 61. The first end portion 61A of the first plate 61 may be arranged to surround the third end portion 63A of the third plate 63 to have a first curved surface. The first end portion 61A of the first plate 61 may be defined or interpreted as a combination of a first curved surface section 612 including the first curved surface and a part of the first flat surface section 611 surrounding the third end portion 63A of the third plate 63. By arranging the first end portion 61A of the first plate 61 to surround the third end portion 63A of the third plate 63, the coupling force between the first plate 61 and the third plate 63 can be increased.

[0384] The third end portion 63A of the third plate 63 may be included in a portion of the third plate 63 surrounding the opening 63H.

[0385] In order to reduce the thickness or volume of the combination of the first end portion 61A of the first plate 61 and the third end portion 63A of the third plate 63, the first end portion 61A may be provided (or formed) to be relatively thin compared to other parts of the first plate 61.

[0386] In order to reduce the thickness or volume of the combination of the first end portion 61A of the first plate 61 and the third end portion 63A of the third plate 63, the third end portion 63A may be provided (or formed) to be relatively thin compared to other parts of the third plate 63.

[0387] The second plate 62 may include a second end portion 62A, which is positioned to support the third region 73 of the first flexible printed circuit board 7 when the foldable electronic device 1 is switched from the unfolded state to the folded state.

[0388] The second end portion 62A of the second plate 62 may contact the third region 73 of the first flexible printed circuit board 7 in the folded state of the foldable electronic device 1. For example, in the folded state of the foldable electronic device 1, the second end portion 62A of the second plate 62 may support the third region 73 of the first flexible printed circuit board 7. When the foldable electronic device 1 is switched from the unfolded state to the folded state, the third region 73 of the first flexible printed circuit board 7 may be deformed while being supported by the second end portion 62A of the second plate 62.

[0389] The surface 6201 of the second end portion 62A of the second plate 62 may include a second curved surface to suppress or prevent damage (e.g., breakage) to the third region 73 of the first flexible printed circuit board 7. The second curved surface included in the second end portion 62A may help to position the third region 73 of the first flexible printed circuit board 7 while reducing the bending stress in the folded state of the foldable electronic device 1.

[0390] When the third region 73 of the first flexible printed circuit board 7 is supported and positioned on the second end portion 62A of the second plate 62, the second curved surface of the second end portion 62A of the second plate 62 can prevent the third region 73 of the first flexible printed circuit board 7 from bending with a radius of curvature equal to or less than the critical radius of curvature, thereby reducing or preventing damage to the third region 73. For example, in a comparative example where the second end portion includes a curved surface and a surface having a radius of curvature equal to or less than the critical radius of curvature, the third region 73 of the first flexible printed circuit board 7 may include a portion supported by the second end portion and bent with a radius of curvature equal to or less than the critical radius of curvature. As a result, bending stress (e.g., yield stress) that causes damage or permanent deformation may occur in the third region 73. For example, in a comparative example where the second end portion includes a curved surface and a surface having a radius of curvature equal to or less than the critical radius of curvature, the third region 73 of the first flexible printed circuit board 7 may include a portion supported by the second end portion and bent with a radius of curvature equal to or less than the critical radius of curvature. And when the foldable electronic device repeatedly switches between the unfolded state and the folded state, the bending stress occurring in the third region 73 may cause deterioration or loss of elasticity due to fatigue accumulation, thereby causing damage or permanent deformation in the third region 73.

[0391] When viewed in a cross-section perpendicular to the center line A of the foldable electronic device 1, the second plate 62 may include a second flat surface section 621 and a second curved surface section 622. The second flat surface portion 621 may support the third display region 153 ( Figure 4 ) of the first display module 15 to be flat in the unfolded state of the foldable electronic device 1. The second curved surface section 622 of the second plate 62 may bend and extend from the second flat surface section 621 to include a second curved surface. The second end portion 62A of the second plate 62 may include the second curved surface section 622.

[0392] The second end portion 62A of the second plate 62 may be formed to have a second curved surface by bending or hemming. The second end portion 62A may also be referred to as a second bent end portion or a second hemmed end portion.

[0393] The illustrated example discloses forming the second end portion 62A having the second curved surface by bending or curling the second plate 62 which is a metal plate, but the second end portion 62A having the second curved surface can be provided by various methods (such as attaching a separate bent member having the second curved surface to the second plate 62).

[0394] To reduce the stress influence of the second end portion 62A of the second plate 62 on the entire width W2 of the third region 73 extending in the direction of the center line A of the foldable electronic device 1 of the first flexible printed circuit board 7 (see Figure 7 ), the second end portion 62A of the second plate 62 can have a width W1 greater than the width W2 of the third region 73 of the first flexible printed circuit board 7 (see Figure 10 ).

[0395] When observed in a cross-section perpendicular to the center line A of the foldable electronic device 1, the fourth plate 64 can include a fourth end portion 64A surrounded by the second end portion 62A of the second plate 62. The second end portion 62A of the second plate 62 can be arranged to surround the fourth end portion 64A of the fourth plate 64 to have a second curved surface. The second end portion 62A of the second plate 62 can be defined or interpreted as a combination of a portion surrounding the fourth end portion 64A of the fourth plate 64 including a second curved surface section 622 having the second curved surface and a second flat surface section 621. By arranging the second end portion 62A of the second plate 62 to surround the fourth end portion 64A of the fourth plate 64, the coupling force between the second plate 62 and the fourth plate 64 can be improved.

[0396] The fourth end portion 64A can be included in a portion of the fourth plate 64 surrounding the opening 64H.

[0397] To reduce the thickness or volume of the combination of the second end portion 62A of the second plate 62 and the fourth end portion 64A of the fourth plate 64, the second end portion 62A can be provided (or formed) to be relatively thin compared to other parts of the second plate 62.

[0398] To reduce the thickness or volume of the combination of the second end portion 62A of the second plate 62 and the fourth end portion 64A of the fourth plate 64, the fourth end portion 64A can be provided (or formed) to be relatively thin compared to other parts of the fourth plate 64.

[0399] In the folded state of the foldable electronic device 1, the first surface 601 included in the first plate 61 and the second surface 602 included in the second plate 62 may face each other, and the curved third display area 153 of the first display module 15 is inserted therebetween. In the folded state of the foldable electronic device 1, the first flat surface section 611 of the first plate 61 and the second flat surface section 621 of the second plate 62 may face each other. The first surface 601 may be substantially provided (or formed) by the first flat surface section 611 of the first plate 61. The second surface 602 may be substantially provided (or formed) by the second flat surface section 621 of the second plate 62.

[0400] In the unfolded state of the foldable electronic device 1, the first surface 601 included in the first plate 61 and the second surface 602 included in the second plate 62 may support the third display area 153 of the first display module 15 to be flat.

[0401] When observed in a cross-section in a direction perpendicular to the center line A of the foldable electronic device 1, the first end 61A of the first plate 61 and the second end 62A of the second plate 62 may face each other by being closer to each other in the unfolded state of the foldable electronic device 1 than in the folded state. When observed in a cross-section in a direction perpendicular to the center line A of the foldable electronic device 1, the first end 61A of the first plate 61 and the second end 62A of the second plate 62 may be farther from each other in the unfolded state of the foldable electronic device 1 than in the folded state.

[0402] The first curved surface of the first end 61A of the first plate 61 and the second curved surface of the second end 62A of the second plate 62 may guide the deformation of the third area 73 of the first flexible printed circuit board 7 such that when the foldable electronic device 1 is switched from the unfolded state to the folded state, the third area 73 is arranged in a predetermined shape.

[0403] The first curved surface of the first end 61A of the first plate 61 and the second curved surface of the second end 62A of the second plate 62 may be provided (or formed) to be symmetric with each other with respect to the center line A of the foldable electronic device 1.

[0404] The third area 73 of the first flexible printed circuit board 7 may be arranged in a symmetric shape with respect to the center line A of the foldable electronic device 1 by being supported by the first end 61A of the first plate 61 and the second end 62A of the second plate 62.

[0405] The fifth plate 65 (see Figure 4 ) of the third plate assembly PA3 (see Figure 4 ) may include a fifth end (not shown separately), which is provided to be substantially the same as or similar to the first end 61A of the first plate 61 included in the first plate assembly PA1.

[0406] The third board assembly PA3 (see Figure 4 ) of the seventh plate 67 (see Figure 4 ) may include a seventh end portion (not separately shown) provided to be substantially the same as or similar to the third end portion 63A of the third plate 63 included in the first plate assembly PA1.

[0407] Fourth board component PA4 (see Figure 4 ) of the sixth plate 66 (see Figure 4 ) may include a sixth end portion (not shown separately) that is provided to be substantially the same as or similar to the second end portion 62A of the second plate 62 included in the second plate assembly PA2.

[0408] Fourth board component PA4 (see Figure 4 ) of the eighth plate 68 (see Figure 4 ) may include an eighth end portion (not separately shown) provided to be substantially the same as or similar to the fourth end portion 64A of the fourth plate 64 included in the second plate assembly PA2.

[0409] Figure 13 2 is a view showing a manufacturing process of the second board assembly PA2 according to an embodiment of the present disclosure.

[0410] Reference Figure 13 In a first operation 1301, a second plate 62 may be manufactured. In a second operation 1302, a fourth plate 64 may be manufactured. In a third operation 1303, the second plate 62 and the fourth plate 64 may be coupled.

[0411] The first operation 1301 or the second operation 1302 may include computer numerical control (CNC), die casting, or pressing.

[0412] The second operation 1302 may further include cutting (eg, CNC) the fourth end portion 64A of the fourth plate 64 such that the fourth end portion 64A has a relatively smaller thickness than other portions of the fourth plate 64 .

[0413] The third operation 1303 may include welding between the second plate 62 and the fourth plate 64 .

[0414] The third operation 1303 may further include deforming a bending angle of the second end portion 62A to inhibit or prevent the fourth end portion 64A of the fourth plate 64 inserted into the second end portion 62A of the second plate 62 from being separated from the second end portion 62A (see a cross-sectional view taken along line DD′).

[0415] The third operation 1303 may further include surface finishing of the second panel assembly PA2.

[0416] To facilitate insertion of the fourth end portion 64A of the fourth plate 64 into the second end portion 62A of the second plate 62, the fourth end portion 64A may have a shape with an inclined surface or a rounded shape (not shown separately).

[0417] The first plate assembly PA1 (see Figure 4 ), the third plate assembly PA3 (see Figure 4 ), or the fourth plate assembly PA4 (see Figure 4 ) may be manufactured in substantially the same or similar manner as the second plate assembly PA2.

[0418] Figure 14 is a view showing the second plate assembly 1400 according to an embodiment of the present disclosure. Figure 15 is an exploded perspective view of the second plate assembly 1400 according to an embodiment of the present disclosure. Figure 16 is a cross-sectional view of the second plate assembly 1400 according to an embodiment of the present disclosure taken along the line H-H' in Figure 14 . Figure 17 is a cross-sectional view of the second plate assembly 1400 according to an embodiment of the present disclosure taken along the line I-I' in Figure 14 .

[0419] Since some components represented by reference numerals have been described above with reference to the drawings, their description may be omitted.

[0420] Referring to Figure 14 , Figure 15 , Figure 16 and Figure 17 , the second plate assembly 1400 may include a second plate 1420, a fourth plate 1440, and / or a support 1500.

[0421] Compared with the curved second end portion 62A included in the second plate 62 of Figure 11 , the second end portion 1420A of the second plate 1420 may be provided to be substantially flat.

[0422] The fourth plate 1440 may be provided in a form in which the fourth end portion 64A is omitted compared with the fourth plate 64 of Figure 11 .

[0423] The support 1500 may replace the second end portion 62A included in the second plate 62 of Figure 4 .

[0424] The support 1500 may be supported on the second plate 1420 and the fourth plate 1440 to be disposed on or coupled to the combination of the second plate 1420 and the fourth plate 1440.

[0425] The fourth plate 1440 may include a first hole portion 1441 and a second hole portion 1442. The first hole portion 1441 includes a first hole 1441H, and the second hole portion 1442 includes a second hole 1442H. The first hole portion 1441 and the second hole portion 1442 may be spaced apart from each other in the direction of the central axis A of the foldable electronic device 1.

[0426] The support member 1500 may include a first portion 1510, a second portion 1520, a third portion 1530, a first protrusion 1541, and / or a fourth protrusion 1542.

[0427] The first portion 1510 of the support member 1500 may be located between the first hole portion 1441 and the second hole portion 1442 of the fourth plate 1440. The first portion 1510 may have a strip shape that extends substantially straight in the direction of the central axis A of the foldable electronic device 1.

[0428] The first portion 1510 of the support member 1500 may be supported by the second end portion 1420A of the second plate 1420. Due to the support of the second end portion 1420A, the straight form of the first portion 1510 can be maintained.

[0429] The first portion 1510 of the support member 1500 may include a curved surface that can inhibit or prevent damage to the third region 73 of the first flexible printed circuit board 7 in the folded state of the foldable electronic device 1. The curved surface provided by the first portion 1510 helps to enable the setting of the third region 73 of the first flexible printed circuit board 7 while reducing the bending stress in the folded state of the foldable electronic device 1.

[0430] The second end portion 1420A of the second plate 1420 may support the first portion 1510 of the support member 1500 and may extend so as not to contact the third region 73 of the first flexible printed circuit board 7 in the folded state of the foldable electronic device 1.

[0431] The second portion 1520 and the third portion 1530 of the support member 1500 may extend from the first portion 1510. The second plate 1420 may include a first notch N1 aligned with the first hole 1441H in the fourth plate 1440. The second plate 1420 may include a second notch N2 aligned with the second hole 1442H in the fourth plate 1440. The first notch N1 and the second notch N2 may be spaced apart from each other in the direction of the center line A of the foldable electronic device 1, and the second end portion 1420A is inserted between the first notch N1 and the second notch N2. The second portion 1520 of the support member 1500 may be located in the first notch N1. The third portion 1530 of the support member 1500 may be located in the second notch N2.

[0432] The first protrusion 1541 of the support member 1500 may extend from the second part 1520 and may be inserted into the first hole 1441H in the fourth plate 1440. The second protrusion 1542 of the support member 1500 may extend from the third part 1530 and may be inserted into the second hole 1442H in the fourth plate 1440.

[0433] The second part 1520 of the support member 1500 extending from one side of the first part 1510 and the first protrusion 1441, and the third part 1530 of the support member 1500 extending from the other side of the first part 1510 and the first protrusion 1441 may provide hook fastening of the support member 1500 for the combination of the second plate 1420 and the fourth plate 1440. Due to the first hook fastening via the second part 1520 and the first protrusion 1441, the second hook fastening via the third part 1530 and the second protrusion 1442, and the support of the second end portion 1420A of the second plate 1420 relative to the first part 1510, the support member 1500 may be stably disposed on or coupled to the combination of the second plate 1420 and the fourth plate 1440.

[0434] An adhesive material (or bonding material) (not shown separately) may be provided between the first part 1510 of the support member 1500 and the second end portion 1420A of the second plate 1420. The first part 1510 may be coupled to the second plate 1420 via the adhesive material (or bonding material).

[0435] The support member 1500 may include silicon, but may include various other materials without being limited thereto.

[0436] Although not shown separately, when the first part 1510 of the support member 1500 is coupled to the second end portion 1420A of the second plate 1420 via an adhesive material (or bonding material), the support member 1500 may be provided in a form in which the second part 1520, the third part 1530, the first protrusion 1541, and the second protrusion 1542 are omitted, and the fourth plate 1440 may be provided in a form in which the first hole portion 1441 and the second hole portion 1442 are omitted.

[0437] Although not shown separately, the second end portion 1420A of the second plate 1420 may be inserted into a recess provided in the first part 1510 of the support member 1500.

[0438] Although not shown separately, Figure 4 the first plate assembly PA1, the third plate assembly PA3, or the fourth plate assembly PA4 of Figure 14 may be modified in a substantially same or similar manner as the second plate assembly 1400 of

[0439] Figure 18is a cross-sectional view taken along line D-D' of a part of the foldable electronic device 1 in the unfolded state according to an embodiment of the present disclosure. Figure 1 in the line D-D'. Figure 19 is a cross-sectional view taken along line E-E' of a part of the foldable electronic device 1 in the folded state according to an embodiment of the present disclosure. Figure 2 in the line E-E'.

[0440] Figure 18 and Figure 19 are examples obtained by changing or modifying the examples of Figure 4 and can be interpreted as being included within the scope of various embodiments of the present disclosure. The same terms and / or the same reference numerals may be used for components that are at least partially the same, similar, or related to those described above with reference to the accompanying drawings.

[0441] Referring to Figure 18 and Figure 19 , the foldable electronic device 1 may include a first plate assembly PA1, a second plate assembly PA2, a first display module 15, and / or a first flexible printed circuit board 7.

[0442] Instead of the screw fastening between the first plate assembly PA1 and the first support plate 1111 of the first frame 111 according to the example of Figure 4 , the first plate assembly PA1 may be operably connected to the first hinge module 141 and the third hinge module 143. When the foldable electronic device 1 switches between the unfolded state and the folded state, the first plate assembly PA1 may move in response to the movement of the first hinge module 141 and the third hinge module 143.

[0443] Instead of the screw fastening between the second plate assembly PA2 and the second support plate 1211 of the second frame 121 according to the example of Figure 4 , the second plate assembly PA2 may be operably connected to the first hinge module 141 and the third hinge module 143. When the foldable electronic device 1 switches between the unfolded state and the folded state, the second plate assembly PA2 may move in response to the movement of the first hinge module 141 and the third hinge module 143.

[0444] Instead of the screw fastening between the third plate assembly PA3 and the first support plate 1111 of the first frame 111 according to the example of Figure 4 , the third plate assembly PA3 may be operably connected to the second hinge module 142 and the third hinge module 143. When the foldable electronic device 1 switches between the unfolded state and the folded state, the third plate assembly PA3 may move in response to the movement of the second hinge module 142 and the third hinge module 143.

[0445] Instead of the screw fastening between the third plate assembly PA3 and the first support plate 1111 of the first frame 111 according to the example of Figure 4The screw fastening between the fourth plate assembly PA4 of the example and the second support plate 1211 of the second frame 121 enables the fourth plate assembly PA4 to be operably connected to the second hinge module 142 and the third hinge module 143. When the foldable electronic device 1 switches between the unfolded state and the folded state, the fourth plate assembly PA4 can move in response to the movement of the second hinge module 142 and the third hinge module 143.

[0446] When viewed in the direction of the center line A (see Figure 1 ) of the foldable electronic device 1 in the unfolded state, the first display module 15 can be arranged to be flat in the first direction 1801. When viewed in the direction of the center line A (see Figure 1 ) of the foldable electronic device 1 in the unfolded state, the third display area 153 can extend the first display area 151 (see Figure 1 ) and the second display area 152 (see Figure 1 ) to be substantially smooth and flat. Figure 4 The first hinge module 141, the second hinge module 142, and the third hinge module 143 in Figure 4 can be configured such that when the foldable electronic device 1 switches from the folded state to the unfolded state, the first plate assembly PA1 and the second plate assembly PA2 support the third display area 153 of the first display module 15 to be flat.

[0447] Figure 4 The first hinge module 141, the second hinge module 142, and the third hinge module 143 of Figure 4 can be configured such that in the unfolded state of the foldable electronic device 1, the first plate assembly PA1 and the second plate assembly PA2 form an angle of approximately 180 degrees substantially between them. Figure 4 ) and the fourth plate assembly PA4 (see Figure 4 ) form an angle of approximately 180 degrees substantially between them.

[0448] Figure 4The first hinge module 141, the second hinge module 142, and the third hinge module 143 can be configured such that when the foldable electronic device 1 is switched from the unfolded state to the folded state, the first plate assembly PA1 and the second plate assembly PA2 face each other and form an acute angle therebetween. When the foldable electronic device 1 is switched from the unfolded state to the folded state, the space between the first plate assembly PA1 and the second plate assembly PA2 can be provided in a shape that widens toward the hinge housing 13 (see Figure 4 ), such that the third display area 153 of the first display module 15 can be disposed therein in a curved shape (e.g., a droplet shape or a dumbbell shape) that can reduce bending stress and / or buckling phenomena.

[0449] When viewed in the direction of the center line A (see Figure 1 ) of the foldable electronic device 1 in the folded state of the foldable electronic device 1, Figure 4 The first hinge module 141, the second hinge module 142, and the third hinge module 143 can be configured such that, in order to widen the space between the first plate assembly PA1 and the second plate assembly PA2 in a second direction 1802 perpendicular to the first direction 1801, the first plate assembly PA1 forms a first acute angle with respect to the second direction 1802, and the second plate assembly PA2 forms a second acute angle with respect to the second direction 1802. The second direction 1802 can be the direction from the first display area 151 and the second display area 152 (see Figure 4 ) facing each other to the third display area 153 in the folded state of the foldable electronic device 1. The first acute angle and the second acute angle can be substantially the same. Figure 4 The first hinge module 141, the second hinge module 142, and the third hinge module 143 can be configured such that the third plate assembly PA3 (see Figure 4 ) moves in substantially the same manner as the first plate assembly PA1. Figure 4 The first hinge module 141, the second hinge module 142, and the third hinge module 143 can be configured such that the fourth plate assembly PA4 (see Figure 4 ) moves in substantially the same manner as the second plate assembly PA2.

[0450] In the folded state of the foldable electronic device 1, the first display area 151 (see Figure 4 ) and the second display area 152 (see Figure 4 ) of the first display module 15 can face each other. In the folded state of the foldable electronic device 1, the third display area 153 of the first display module 15 can be located in a curved shape between the first plate assembly PA1 and the second plate assembly PA2. In the folded state of the foldable electronic device 1, the third display area 153 of the first display module 15 can be located in a curved shape between the third plate assembly PA3 (see Figure 4) and the fourth board assembly PA4 (see Figure 4 ). In the folded state of the foldable electronic device 1, the third display area 153 may be disposed between the first board assembly PA1 and the third board assembly PA3 and between the second board assembly PA2 and the fourth board assembly PA4 in a bent shape (e.g., a droplet shape or a dumbbell shape) that can reduce bending stress and / or buckling phenomenon while being supported by the first board assembly PA1 and the third board assembly PA3 and the second board assembly PA2 and the fourth board assembly PA4. In the folded state of the foldable electronic device 1, the third display area 153 may be set in a bent shape (e.g., a droplet shape or a dumbbell shape), and this bent shape can reduce the collision (e.g., bending stress) between the tensile stress generated in one side area of the third display area 153 and the compressive stress generated in the other side area of the third display area 153 with respect to the neutral plane inside the third display area 153. The third display area 153 set in a bent shape in the folded state of the foldable electronic device 1 may be provided (or formed) in a shape that is substantially symmetric about the center line A of the foldable electronic device 1 (see Figure 1 ).

[0451] An integral or single board may be provided to replace the first board 61 of the first board assembly PA1 and the fifth board 65 of the third board assembly PA3 (see Figure 4 ) (see Figure 4 ).

[0452] An integral or single board may be provided to replace the third board 63 of the first board assembly PA1 and the seventh board 67 of the third board assembly PA3 (see Figure 4 ).

[0453] An integral or single board may be provided to replace the second board 62 of the second board assembly PA2 and the sixth board 66 of the fourth board assembly PA4 (see Figure 4 ) (see Figure 4 ).

[0454] An integral or single board may be provided to replace the fourth board 64 of the second board assembly PA2 and the eighth board 68 of the fourth board assembly PA4 (see Figure 4 ).

[0455] The first fixing portion F1 of the first flexible printed circuit board 7 may be located between the first board assembly PA1 and the first support plate 1111 (see Figure 4 ). The first fixing portion F1 may be disposed on the first support plate 1111 or coupled to the first support plate 1111 (see Figure 4 ).

[0456] The second fixing portion F2 of the first flexible printed circuit board 7 may be located between the second board assembly PA2 and the second support plate 1211 (see Figure 4)。The second fixing part F2 can be disposed on the second support plate 1211 or coupled to the second support plate 1211 (see Figure 4 )。

[0457] The third fixing part F3 of the second flexible printed circuit board 8 (see Figure 8 ) can be located between the third board assembly PA3 (see Figure 4 ) and the first support plate 1111 (see Figure 4 ). The third fixing part F3 can be disposed on the first support plate 1111 or coupled to the first support plate 1111 (see Figure 4 )。

[0458] The fourth fixing part F4 of the second flexible printed circuit board 8 can be located between the fourth board assembly PA4 and the second support plate 1211 (see Figure 4 )。The fourth fixing part F4 can be disposed on the second support plate 1211 or coupled to the second support plate 1211 (see Figure 4 )。

[0459] The third region 73 of the first flexible printed circuit board 7 can have a length within a predetermined range. When the third region 73 has a length within a predetermined range, it can help the third region 73 to be disposed in a limited space in a predetermined shape that can reduce the bending stress in the unfolded state of the foldable electronic device 1. When the third region 73 has a length within a predetermined range, the third region 73 can avoid interfering with the first board assembly PA1 and the second board assembly PA2 in the folded state of the foldable electronic device 1. For example, compared with a comparative example in which the first board assembly PA1 and the second board assembly PA2 are substantially parallel to each other in the folded state of the foldable electronic device 1 (e.g., see Figure 9 ), the third region 73 of the first flexible printed circuit board 7 can be provided (formed) with a greater length so as to avoid interfering with the first board assembly PA1 and the second board assembly PA2.

[0460] The third board 63 of the first board assembly PA1 can include a third end portion 63A, and when the foldable electronic device 1 is switched from the unfolded state to the folded state, the third end portion 63A is positioned to support the third region 73 of the first flexible printed circuit board 7.

[0461] The third end portion 63A of the third board 63 included in the first board assembly PA1 can be in contact with the third region 73 of the first flexible printed circuit board 7 in the folded state of the foldable electronic device 1. For example, in the folded state of the foldable electronic device 1, the third end portion 63A of the third board 63 can support the third region 73 of the first flexible printed circuit board 7. When the foldable electronic device 1 is switched from the unfolded state to the folded state, the third region 73 of the first flexible printed circuit board 7 can be deformed while being supported by the third end portion 63A of the third board 63.

[0462] The third end portion 63A of the third plate 63 included in the first plate assembly PA1 may include a first bent portion 1901 and a second bent portion 1902 to have a curved surface that can reduce the bending stress of the third region 73 while suppressing the third region 73 of the first flexible printed circuit board 7 from approaching the first plate 61 more closely in the folded state of the foldable electronic device 1. The first bent portion 1901 and the second bent portion 1902 may be bent in substantially opposite directions. The third end portion 63A including the first bent portion 1901 and the second bent portion 1902 bent in opposite directions may be referred to as a "first S-bent portion" or a "first Z-bent portion".

[0463] When observed in a cross-section perpendicular to the center line A of the foldable electronic device 1, the third plate 63 may include a third flat surface section 631 and a third curved surface section 632. The third curved surface section 632 of the third plate 63 may be bent and extended from the third flat surface section 631 to include the first bent portion 1901 and the second bent portion 1902. The third end portion 63A of the third plate 63 may include the third curved surface section 632.

[0464] The fourth plate 64 of the second plate assembly PA2 may include a fourth end portion 64A that is positioned to support the third region 73 of the first flexible printed circuit board 7 when the foldable electronic device 1 is switched from the unfolded state to the folded state.

[0465] The fourth end portion 64A of the fourth plate 64 included in the second plate assembly PA2 may contact the third region 73 of the first flexible printed circuit board 7 in the folded state of the foldable electronic device 1. For example, in the folded state of the foldable electronic device 1, the fourth end portion 64A of the fourth plate 64 may support the third region 73 of the first flexible printed circuit board 7. When the foldable electronic device 1 is switched from the unfolded state to the folded state, the third region 73 of the first flexible printed circuit board 7 may be deformed while being supported by the fourth end portion 64A of the fourth plate 64.

[0466] The fourth end portion 64A of the fourth plate 64 included in the second plate assembly PA2 may include a third bent portion 1903 and a fourth bent portion 1904 to have a curved surface that can reduce the bending stress of the third region 73 while suppressing the third region 73 of the first flexible printed circuit board 7 from approaching the second plate 62 more closely in the folded state of the foldable electronic device 1. The third bent portion 1903 and the fourth bent portion 1904 may be bent in substantially opposite directions. The fourth end portion 64A including the third bent portion 1903 and the fourth bent portion 1904 bent in opposite directions may be referred to as a "second S-bent portion" or a "second Z-bent portion".

[0467] When observed in a cross-section perpendicular to the center line A of the foldable electronic device 1, the fourth plate 64 may include a fourth flat surface section 641 and a fourth curved surface section 642. The fourth curved surface section 642 of the fourth plate 64 may bend and extend from the third flat surface section 641 to include a third bending part 1903 and a fourth bending part 1904. The fourth end 64A of the fourth plate 64 may include the fourth curved surface section 642.

[0468] In the unfolded state of the foldable electronic device 1, the first plate 61 and the second plate 62 may support the third display area 153 of the first display module 15 to be flat. In the folded state of the foldable electronic device 1, the first plate 61 and the second plate 62 may face each other. In the folded state of the foldable electronic device 1, the third display area 153 may be supported between the first plate 61 and the second plate 62 by the first plate 61 and the second plate 62 to be set in a bent shape (e.g., a droplet shape or a dumbbell shape) capable of reducing bending stress and / or buckling phenomenon.

[0469] The third end 63A of the third plate 63 and the fourth end 64A of the fourth plate 64 may be provided (formed) to be substantially symmetric with respect to the center line A of the foldable electronic device 1.

[0470] In the folded state of the foldable electronic device 1, the third area 73 of the first flexible printed circuit board 7 may be supported and stably set on the third end 63A of the third plate 63 and the fourth end 64A of the fourth plate 64.

[0471] The seventh end (not shown separately) of the seventh plate 67 (see Figure 4 ) included in the third plate assembly PA3 with respect to the sixth area 83 of the second flexible printed circuit board 8 (see Figure 4 ) may be implemented in substantially the same manner as the third end 63A included in the third plate 63 of the first plate assembly PA1 with respect to the third area 73 of the first flexible printed circuit board 7. The eighth end (not shown separately) of the eighth plate 68 (see Figure 4 ) included in the fourth plate assembly PA4 with respect to the sixth area 83 of the second flexible printed circuit board 8 (see Figure 4 ) may be implemented in substantially the same manner as the fourth end 64A included in the fourth plate 64 of the second plate assembly PA2 with respect to the third area 73 of the first flexible printed circuit board 7. In the folded state of the foldable electronic device 1, the sixth area 83 of the second flexible printed circuit board 8 may be supported and stably set on the seventh end of the seventh plate 67 and the eighth end 64A of the eighth plate 68.

[0472] According to an exemplary embodiment of the present disclosure, the foldable electronic device 1 may include a foldable housing 10, the foldable housing 10 including a first housing 11, a second housing 12, and a hinge 14 configured to interconnect the first housing 11 and the second housing 12. The foldable electronic device 1 may include a flexible printed circuit board (e.g., a first flexible printed circuit board 7) extending across the hinge 14. The hinge 14 may include a first plate 61 and a second plate 62. The first plate 61 may include a first end 61A, the first end 61A including a first curved surface configured to support the flexible printed circuit board when the foldable housing is in a folded state. The second plate 62 may include a second end 62A, the second end 62A including a second curved surface configured to support the flexible printed circuit board when the foldable housing is in a folded state.

[0473] The foldable electronic device 1 may further include a flexible display module (e.g., a first display module 15) disposed in the foldable housing 10. The flexible display module may include a first display area 151 disposed on the first housing 11, a second display area 152 disposed on the second housing 12, and a third display area 153 extending the first display area 151 and the second display 152. When the foldable housing 10 is in a folded state, the first display area 151 and the second display area 152 may face each other, and the third display area 153 may be bent. The hinge 14 may be configured such that when the foldable housing 10 is in an unfolded state, the first plate 61 and the second plate 62 support the third display area 153 to be flat. The hinge 14 may be configured such that when the foldable housing 10 is in a folded state, the first plate 61 and the second plate 62 face each other, with the third display area 153 interposed therebetween.

[0474] The hinge 14 may be configured such that when the foldable housing 10 is in a folded state, the first plate 61 and the second plate 62 are arranged parallel to each other.

[0475] When the foldable housing 10 is in an unfolded state, when viewed in the direction of the folding axis (e.g., the center line A) of the foldable housing 10, the flexible display module (e.g., the first display module 15) may be flatly arranged in a first direction. The hinge 14 may be configured such that when viewed in the direction of the folding axis when the foldable housing 10 is in an unfolded state, the first plate 61 and the second plate 62 form an acute angle with respect to a second direction perpendicular to the first direction and from the first display area 151 and the second display area 152 toward the third display area 153. The space between the first plate 61 and the second plate 62 may widen in the second direction.

[0476] The first end portion 61A and the second end portion 62A may face each other and be closer to each other when the foldable housing 10 is in the unfolded state than when the foldable housing 10 is in the folded state.

[0477] The flexible printed circuit board (e.g., the first flexible printed circuit board 7) may include a first rigid portion (e.g., the first fixed portion F1), a second rigid portion (e.g., the second fixed portion F2), a first connector 7A, a second connector 7B, a first region 71, a second region 72, and / or a third region 73. The first rigid portion may be located between the first plate 61 and the first housing 11. The second rigid portion may be located between the second plate and the second housing 12. The first connector 7A may be electrically connected to a first element located in the first housing 11. The second connector 7B may be electrically connected to a second element located in the second housing 12. The first region 71 may extend the first rigid portion and the first connector 7A. The second region 72 may extend the second rigid portion and the second connector 7B. The third region 73 may extend the first rigid portion and the second rigid portion and may cross the hinge 14.

[0478] The first rigid portion (e.g., the first fixed portion F1) may be coupled to the first housing 11, and the second rigid portion (e.g., the second fixed portion F2) may be coupled to the second housing 12.

[0479] The first rigid portion (e.g., the first fixed portion F1) may be coupled to the first plate 61, and the second rigid portion (e.g., the second fixed portion F2) may be coupled to the second plate 62.

[0480] The foldable electronic device 1 may further include a third plate 63 and a fourth plate 64. The third plate 63 may be at least partially located between the first plate 61 and the first housing 11 and may be coupled to the first plate 61. The fourth plate 64 may be at least partially located between the second plate 62 and the second housing 12 and may be coupled to the second plate 62. The first rigid portion (e.g., the first fixed portion F1) may be inserted into an opening 63H in the third plate 63 and coupled to the first plate 61. The second rigid portion (e.g., the second fixed portion F2) may be inserted into an opening 64H in the fourth plate 64 and coupled to the second plate 62.

[0481] The first plate 61 and the third plate 63 may be coupled by soldering. The second plate 62 and the fourth plate 64 may be coupled by soldering. The first plate 61 may be coupled to the first housing 11 by screw fastening. The second plate 62 may be coupled to the second housing 11 by screw fastening.

[0482] The first end portion 61A can be arranged to surround the third end portion 63A of the third plate 63 to have a first curved surface, which is configured to support a flexible printed circuit board (e.g., the first flexible printed circuit board 7) when the foldable housing 10 is in a folded state. The second end portion 62A can be arranged to surround the fourth end portion 64A of the fourth plate 64 to have a second curved surface, which is configured to support a flexible printed circuit board when the foldable housing 10 is in a folded state.

[0483] The first end portion 61A can include a first bent portion 1901 and a second bent portion 1902, and the first bent portion 1901 and the second bent portion 1902 are bent in opposite directions to have a first curved surface configured to support a flexible printed circuit board (e.g., the first flexible printed circuit board 7) when the foldable housing 10 is in a folded state. The second end portion 62A can include a third bent portion 1903 and a fourth bent portion 1904, and the third bent portion 1903 and the fourth bent portion 1904 are bent in opposite directions to have a second curved surface configured to support a flexible printed circuit board when the foldable housing 10 is in a folded state.

[0484] The width W1 by which the first end portion 61A or the second end portion 62A extends in the direction of the folding axis (e.g., the center line A) can be configured to be greater than the width W2 by which the third region 73 extends in the direction of the folding axis.

[0485] The first curved surface and the second curved surface can be symmetrically formed with respect to the folding axis (e.g., the first center line A) of the foldable housing 10.

[0486] The hinge 14 can include a first hinge module 141, a second hinge module 142, and a third hinge module 143 between the first hinge module 141 and the second hinge module 142. The first plate 61 and the second plate 62 can be at least located between the first hinge module 141 and the third hinge module 143.

[0487] The embodiments of the present disclosure described and illustrated in the specification and drawings are merely specific examples presented for the purpose of easily explaining the technical content of the present disclosure and helping to understand the present disclosure, and are not intended to limit the scope of the present disclosure. Therefore, the scope of the present disclosure should be construed to include all changes and modifications derived from the technical idea of the present disclosure in addition to the embodiments disclosed herein. Additionally, it will be understood that any embodiment set forth herein can be used in conjunction with any other embodiment set forth herein.

Claims

1. A foldable electronic device (1), comprising: A foldable housing (10), including a first housing (11), a second housing (12), and a hinge (14), the hinge (14) being configured to interconnect the first housing (11) and the second housing (12); and A flexible printed circuit board (7), extending across the hinge (14), Wherein, the hinge (14) includes a first plate (61) and a second plate (62), Wherein, the first plate (61) includes a first end (61A), the first end (61A) including a first curved surface configured to support the flexible printed circuit board (7) in a folded state of the foldable housing (10), and Wherein, the second plate (62) includes a second end (62A), the second end (62A) including a second curved surface configured to support the flexible printed circuit board (7) when the foldable housing is in the folded state.

2. The foldable electronic device according to claim 1, further comprising a flexible display module (15) disposed in the foldable housing (10), Among them, The flexible display module (15) includes a first display area (151) disposed on the first housing (11), a second display area (152) disposed on the second housing (12), and a third display area (153) extending the first display area (151) and the second display area (152), Wherein, in the folded state, the first display area (151) and the second display area (152) face each other, and the third display area (153) is bent, Wherein, the hinge (14) is configured such that in the unfolded state, the first plate (61) and the second plate (62) support the third display area (153) to be flat, and Wherein, the hinge (14) is configured such that in the folded state, the first plate (61) and the second plate (62) face each other and the third display area (153) is interposed therebetween.

3. The foldable electronic device according to claim 1 or 2, wherein, The hinge (14) is configured such that in the folded state, the first plate (61) and the second plate (62) are arranged parallel to each other.

4. The foldable electronic device according to any one of claims 1 to 3, wherein, In the unfolded state of the foldable housing (10), when viewed in the direction of the folding axis (A) of the foldable housing (10), the flexible display module (15) is arranged to be flat in a first direction, Wherein, the hinge (14) is configured such that when the foldable housing (10) is in the unfolded state and viewed in the direction of the folding axis (A), the first plate (61) and the second plate (62) form an acute angle with respect to a second direction, the second direction being perpendicular to the first direction and pointing from the first display area (151) and the second display area (151) to the third display area (153), and Wherein, the space between the first plate (61) and the second plate (62) widens in the second direction.

5. The foldable electronic device according to any one of claims 1 to 4, wherein, The first end portion (61A) and the second end portion (62A) face each other and are closer to each other in the unfolded state than in the folded state.

6. The foldable electronic device according to any one of claims 1 to 5, wherein, The flexible printed circuit board (7) includes: a first rigid portion (F1) located between the first plate (61) and the first housing (11); a second rigid portion (F2) located between the second plate (62) and the second housing (12); a first connector (7A) electrically connected to a first component located in the first housing (11); a second connector (7B) electrically connected to a second component located in the second housing (12); a first region (71) extending the first rigid portion (F1) and the first connector (7A); a second region (72) extending the second rigid portion (F2) and the second connector (7B); and a third region (73) extending the first rigid portion (F1) and the second rigid portion (F2) and extending across the hinge (14).

7. The foldable electronic device according to claim 6, wherein, The first rigid portion (F1) is coupled to the first housing (11), and the second rigid portion (F2) is coupled to the second housing (12).

8. The foldable electronic device according to claim 6, wherein, The first rigid portion (F1) is coupled to the first plate (61), and the second rigid portion (F2) is coupled to the second plate (62).

9. The foldable electronic device according to claim 8, further comprising: a third plate (63) at least partially located between the first plate (61) and the first housing (11) and coupled to the first plate (61); and a fourth plate (64) at least partially located between the second plate (62) and the second housing (12) and coupled to the second plate (62), wherein the first rigid portion (F1) is inserted into an opening (63H) in the third plate (63) and coupled to the first plate (61), and wherein the second rigid portion (F2) is inserted into an opening (64H) in the fourth plate (64) and coupled to the second plate (62).

10. The foldable electronic device according to claim 9, wherein, The first plate (61) and the third plate (63) are coupled by welding, wherein the second plate (62) and the fourth plate (64) are coupled by welding, wherein the first plate (61) is coupled to the first housing (11) by screw fastening, wherein the second plate (62) is coupled to the second housing (11) by screw fastening.

11. The foldable electronic device according to claim 9 or 10, wherein, The first end portion (61A) is arranged to surround a third end portion (63A) of the third plate (63) in the folded state to have the first curved surface configured to support the flexible printed circuit board (7), and wherein the second end portion (62A) is arranged to surround a fourth end portion (64A) of the fourth plate (64) in the folded state to have the second curved surface configured to support the flexible printed circuit board (7).

12. The foldable electronic device according to any one of claims 1 to 10, wherein, The first end portion (61A) includes a first bending portion (1901) and a second bending portion (1902), and the first bending portion (1901) and the second bending portion (1902) are bent in opposite directions to have a first curved surface configured to support the flexible printed circuit board (7) in the folded state, and wherein the second end portion (62A) includes a third bending portion (1903) and a fourth bending portion (1904), and the third bending portion (1903) and the fourth bending portion (1904) are bent in opposite directions to have a second curved surface configured to support the flexible printed circuit board (7) in the folded state.

13. The foldable electronic device according to any one of claims 6 to 12, wherein, The width (W1) by which the first end portion (61A) or the second end portion (62A) extends in the direction of the folding axis (A) is configured to be greater than the width (W2) by which the third region (73) extends in the direction of the folding axis (A).

14. The foldable electronic device according to any one of claims 1 to 13, wherein, The first curved surface and the second curved surface are symmetrically formed with respect to the folding axis (A) of the foldable housing (10).

15. The foldable electronic device according to any one of claims 1 to 14, wherein, The hinge (14) includes a first hinge module (141), a second hinge module (142), and a third hinge module (143) located between the first hinge module (141) and the second hinge module (142), and wherein the first plate (61) and the second plate (62) are at least located between the first hinge module (141) and the third hinge module (143).

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