Abstract: Disclosed is a flexible display device. The flexible display device includes a housing, a winding shaft, a flexible display panel, a supporting member, a separating member and a pressing member. The housing has an opening provided thereon. The winding shaft is rotatably provided in the housing. The flexible display panel has one end connected to the winding shaft and another opposite end extending out of the housing through the opening. The supporting member has one end connected to the winding shaft and another opposite end extending out of the housing through the opening. The separating member is provided on the housing to separate the flexible display panel and the supporting member partially. The pressing member is provided on the housing to connect the flexible display panel and the supporting member.

Abstract: An electrical connection box includes a busbar, a box main body in which the busbar is provided, and a cover that covers the box main body. The cover has an engaging part. The box main body has an engaged part that is engaged with the engaging part to combine the box main body and the cover. A recessed part is formed in an outer peripheral wall of a unit that is formed by combining the box main body and the cover. The recessed part houses a lock part that is formed by engagement between the engaging part and the engaged part. The recessed part has a depth dimension with which the lock part is positioned closer to a central side of the unit than an end surface of the outer peripheral wall.

Abstract: A method for monitoring the status of an apparatus, wherein an analog signal is converted into a digital signal with an analog-digital converter operating within a measuring range, signal portions of the analog signal extending beyond the measuring range are cut in the digital signal, a spectral analysis is applied to the digital signal to determine which frequency potions the analog signal possesses in a frequency spectrum and conclude a malfunction of the apparatus when the analog signal exceeds the measuring range, where when the analog signal extending beyond the measuring range is in the digital signal, this event is detected and determined as a number, where a signal quality is provided which is used to assess whether known damage frequencies can still be identified from determined frequency portions of the frequency spectrum, although additional overcontrol portions in the frequency spectrum occur as a result of possibly cut signal portions.

Abstract: A display device includes a display panel; a first upper support member on the display panel; and a second upper support member on the display panel and spaced from the first upper support member; and a blocking member including a blocking part crossing the first upper support member and the second upper support member, a first stretchable part connected to a side of the blocking part and including a plurality of openings, a second stretchable part connected to another side of the blocking part and including a plurality of openings, a first fixing part connected to the first stretchable part, and a second fixing part connected to the second stretchable part.

Abstract: The present disclosure relates to a display panel including: a first panel area having a first front face and a first rear face; a second panel area having a second front face and a second rear face, the second panel area being configured to overlap the first panel area with the second rear face facing the first rear face with the display panel in a folded state; a third panel area having a third front face and a third rear face, the third panel area being configured to overlap the second panel area with the third front face facing the second front face with the display panel in the folded state; a first hinge coupling for coupling the first panel area and the second panel area to each other; and a second hinge coupling for coupling the second panel area and the third panel area to each other.

Abstract: An electronic device may include: a housing including a first housing and a second housing, a hinge connecting the first housing and the second housing to be rotatable, a display module including a display panel including a first area disposed in the first housing, a second area disposed in the second housing, and a folding area disposed in the hinge part, a first plate supporting the first area of the display panel, and a second plate supporting the second area of the display panel, a third plate disposed under the first plate, and a fourth plate disposed under the second plate. At least a part of at least one of the third plate and the fourth plate may be disposed between the first plate and the second plate to support at least some of the folding area of the display panel.

Abstract: A display device includes a cover module having a storage space therein, a display panel configured to be at least partially disposed inside the storage space or withdrawn outside the storage space, and a first driving system configured to embed and withdraw the display panel into and from the cover module in a first direction, wherein the first driving system includes a first wire drum and a first driving wire.

Abstract: Disclosed are gaming systems, methods and machines that may include one or more notched display screens. The notched display screens are defined by a non-rectangular shape. One or more portions of the display screen is removed, such that a variety of shapes can result from one or more cuts in the screen. In some examples, two or more notched display screens are arranged to provide a common and/or coordinated display. In some examples, a void from the removed portions can be used to present a feature, such as a mechanical reel.

Abstract: An electronic device, including a display panel, a backboard, and an elastic member, is provided. The backboard includes a bottom portion, a side portion, and a carrier portion. The display panel is disposed on the carrier portion, and an accommodating space is provided between the carrier portion and the bottom portion. The elastic member includes a main body portion and a protruding portion disposed on the main body portion. The main body portion is located in the accommodating space between the bottom portion and the carrier portion, and the protruding portion is located between the side portion and the display panel. By disposing the main body portion in the accommodating space, light leakage from the assembly gap is reduced. By providing the protruding portion between the side portion and the display panel, breakage of the display panel by directly hitting the side portion is avoided.

Abstract: A window includes a substrate including a folding area folded about an imaginary folding axis and a non-folding area and including an upper surface and a lower surface and a plurality of groove patterns arranged in the folding area along a first direction crossing the folding axis. Each of the groove patterns includes a bottom surface recessed from the upper surface and substantially parallel to the upper surface and a side surface connecting the bottom surface and the upper surface. The side surface includes at least one curved surface.

Abstract: A display device includes a flexible display panel having two surfaces opposite to each other, and a heat dissipation sheet disposed on one of the two surfaces of the flexible display panel and being foldable together with the flexible display panel. In a side view, the heat dissipation sheet includes at least one opening.

Abstract: The present disclosure provides a display device. The display device includes a transparent cover plate, a display panel, a frame assembly and an infrared touch assembly. The frame assembly includes an outer frame and a light filtering strip. The light filtering strip is provided with a light filtering part that presses at a front side edge of the transparent cover plate. The outer frame includes an outer frame body, a front frame wall and a rear frame wall. An outer side end of the front frame wall is connected to the outer frame body. An inner side end of the front frame wall presses on a front side surface of the light filtering part. An outer side end of the rear frame wall is connected to the outer frame body. The infrared touch assembly is fixed between the front frame wall and the rear frame wall.

Abstract: A rack assembly unit for mounting a control unit to a vehicle rack system is provided; a rack chassis and a tray are configured to receive the control unit for coupling to a vehicle system. The tray is movably coupled to the rack chassis at a coupling mechanism, which provides for movement of the tray relative to the rack chassis between open and closed positions. At the open position, the tray is spaced apart from rack chassis to facilitate user access to the tray and receiving the control unit therein. At the closed position, the tray is located fully inserted relative to the rack chassis and such that the control unit located in the tray is provided at a control unit operating position thermally coupled to a cold plate of a cooling system to provide for cooling of components of the control unit.

Abstract: A display apparatus includes: a display panel; a first pattern layer on one surface of the display panel; and a second pattern layer facing the one surface with the first pattern layer interposed therebetween, wherein: the first pattern layer comprises a plurality of first patterns each having a closed line shape comprising a first opening; the second pattern layer comprises a plurality of second patterns each having a closed line shape comprising a second opening; on the one surface, each of the first pattern layer and the second pattern layer has a deformation rate which is smaller in a direction perpendicular to a tensile direction than in the tensile direction; and on the one surface, the first openings overlap portions of the second patterns.

Abstract: A display device includes: a display module having a flat area and a bendable area; and a sliding module configured to slide the display module in a first direction, wherein the sliding module includes: a central part including an upper central portion and a lower central portion, wherein the upper central portion is disposed under the flat area, and the lower central portion is disposed under the upper central portion; an upper expandable part configured to expand and contract and connected to the upper central portion; a roller connected to the upper expandable part; a first lower expandable part configured to expand and contract and connected to the lower central portion; and a second lower expandable part configured to expand and contract and connected to the first lower expandable part, wherein the second lower expandable part is connected to the bendable area.

Abstract: A connection structure, a method of manufacturing the connection structure, a connection material, and a coated conductive particle capable of reducing and stabilizing a conduction resistance value. The connection structure includes: a first electronic component having a first terminal; a second electronic component having a second terminal, and a cured film provided between the first electronic component and the second electronic component and formed by curing the connection material, wherein, with regard to the coated conductive particles between the first terminal and the second terminal, metal atoms of the conductive layer diffuse into the metal of the metal fine particles, and metal atoms of the first terminal and the metal atoms of the second terminal diffuse into the metal of the metal fine particles.

Abstract: Embodiments of a curved display assembly are disclosed. The assembly includes a glass sheet having first and second major surfaces. The second major surface defines a first curvature of the glass sheet, and the first curvature has a bend axis. The assembly also includes a curved display having a second thickness between first and second display surfaces. The display has a display region and two overhanging edges adjacent to the display region and parallel to the bend axis. A first adhesive bonds the second display surface to the second major surface in the display region. A second adhesive is disposed between each of the two overhanging edges and the second major surface. The second adhesive has a higher elastic modulus than the first adhesive. The overhanging edges each extend a distance outside of the display area that is at least three times the second thickness of the curved display.

Abstract: Systems and methods for printing a printed circuit board (PCB) from substrate to full integration utilize a laser-assisted deposition (LAD) system to print a flowable material on top of a substrate by laser jetting to create a PCB structure to be used as an electronic device. One such system for PCB printing includes a jet printing unit, an imaging unit, curing units, and a drilling unit to print metals and other materials (epoxies, solder masks, etc.) directly on a PCB substrate such as a glass-reinforced epoxy laminate material (e.g., FR4) or others. The jet printing unit can also be used for sintering and/or ablation of materials. Printed materials are cured by heating or by infrared (IR) or ultraviolet (UV) radiation. PCBs produced according to the present systems and methods may be single-sided or double-sided.

Abstract: A waterproof button structure includes a button main body, a shell and a shaft sleeve, wherein a button mounting slot is reserved on the shell; a vertical column is arranged in the button mounting slot; the vertical column is provided with a through hole longitudinally penetrating through the vertical column; the button main body includes a pressing portion and a shaft portion; a bottom surface of the pressing portion is provided with a first annular groove; a second annular groove is formed between the vertical column and an inner wall of the button mounting slot.

Abstract: An electronic device may have a hinge that allows the device to be flexed about a bend axis. A display may span the bend axis. To facilitate bending about the bend axis, the display may have layers such as a display cover layer with grooves or other recesses. The recesses form a flexible portion in the display layer. The display layer may be formed from glass or other materials that are transparent. Elastomeric material, fluids, and other materials may be placed in the recesses in the display layer. The material in the display layer may have an index of refraction that is matched to the index of refraction of the display layer. A hinge may be formed between rigid planar layers that are separated by a gap. Flexible layers that lie flush with opposing surfaces of the rigid planar layers may be used to span the gap.

Abstract: A display device of the present disclosure may include: a flexible display panel; a flexible inner plate disposed at a rear of the display panel and coupled to the display panel; a frame covering an edge of the inner plate; and a drive module disposed at a rear of the inner plate and configured to provide power to allow the inner plate and the display panel to be bent or flatten, wherein the frame includes: a top cover extending along a first side of the inner plate, and fixed to the inner plate to be bent or flatten along the inner plate; and a side cover extending along a second side of the inner plate that intersects the first side, and fixed to the display panel, and wherein a gap between the top cover and the side cover increases as the display panel is bent.

Abstract: A foldable device includes a foldable layer and a hinge mechanism including at least one hinge module. The at least one hinge module includes a first hinge section and a second hinge section that are each rotatable relative to a central hinge axis to move the device between an unfolded and a folded configuration. The first and second hinge sections may each include a first rod that is threadably engaged in a first passage in a corresponding housing of the device, and a second rod that is movably received in a second passage in a corresponding housing of the device. Movement of the first rod within the first passage adjusts a length of the hinge module during folding/unfolding of the device to maintain bending within a neutral layer of the foldable layer, while being guided by movement of the second rod in the second passage.

Abstract: An information handling system stylus self-cleans a magnet garage arrangement with a garage variable magnet having a first magnetic attraction when the stylus is proximate and information handling system garage and a second magnetic attraction when the stylus is distal the information handling system garage. The second magnetic attraction has a reduced attractive force at the stylus housing outer surface to discourage attraction of contaminants that might scratch or otherwise damage the housing.

Abstract: An antenna structure according to an embodiment includes an antenna device, a circuit board connected to the antenna device and including an inner insulation layer, and an outer insulation layer formed on the antenna device to cover the antenna unit and a portion of the circuit board. A portion of the inner insulation layer covered by the outer insulation layer may have a smaller thickness than a thickness of a portion of the inner insulation layer not covered by the outer insulation layer.

Abstract: A portable electronic device is provided having a foldable housing, a flexible display, and a hinge structure. The hinge structure includes a hinge cover, a rotary shaft assembly substantially accommodated in the hinge cover under the flexible display, and including a first rotary shaft and a second rotary shaft substantially parallel to each other. The hinge structure also includes a first arm structure and a second arm structure rotatably coupled with the first rotary shaft and the second rotary shaft, respectively. The hinge structure further includes a guide member connected with the rotary shaft assembly and including a recessed area located substantially between the first rotary shaft and the second rotary shaft when viewed from above the flexible display. The recessed area is configured to accommodate at least part of a third display portion when the foldable housing is at least partially folded.

Abstract: Two shot knuckles include a first shot component and a second shot component. Both shot components are composed of different dielectric materials, where the first shot is composed of a relatively high strength structural material and the second is composed of a cosmetic material. The first shot component can physically couple two conductive sections together by interfacing with a coupling structure of that section. The first shot component includes second shot retaining regions and a cosmetic region. The second shot component occupies the cosmetic region and anchors itself to the first shot component using the second shot retaining regions. The second shot may be the only part of the two-shot knuckle visible to a user of an electronic device and can exhibit any desired color.

Abstract: A hinge is connectable with two housing shells for permitting relative opening and closing of the housing shells, and includes a fixed seat, at least two rotating units, two lateral support plates and a center support plate. The rotating units are disposed at two sides of a centerline of the fixed seat and are connectable with the housing shells. The rotating units are shiftable between an open state and a closed state. Each rotating unit includes a linking member arcuately slidable on the fixed seat. The lateral support plates are mounted on the linking members, and have central notches. The center support plate is movably disposed on the fixed seat and is moved with the rotating units. In the open state, the center support plate is disposed in the central notches. In the closed state, the center support plate abuts against the fixed seat.

Abstract: A hinged support apparatus that can include a mounting plate, an elongated base, and two living hinges on the elongated base. The mounting plate can have a proximal and a distal end. The elongated base can have a proximal end, a midway point, and a distal end, wherein the proximal end of the elongated base can be attached to at least a portion of the proximal end of the mounting plate and the midway point can create a proximal half and a distal half of the elongated base. A first of the two living hinges can be located between the proximal end and the midway point of the elongated base. A second of the two living hinges can be located between the first living hinge and the midway point of the elongated base. The two living hinges can be parallel to each other and can pivot in the same direction.

Abstract: A portable electronic device including a first body, a second body, and a hinge mechanism is provided. The second body is connected to the first body through the hinge mechanism, and the hinge mechanism has a basis axis located at the first body and a rotation axis located at a lower end of the second body. When the second body rotates with respect to the first body, the rotation axis slides along an arc shaped path with respect to the basis axis to increase or decrease a distance between the rotation axis and the basis axis and increase or decrease a distance between the lower end of the second body and a back end of the first body.

Abstract: A surface cleaning apparatus adapted for movement across a surface to be cleaned. The surface cleaning apparatus can dock within a storage tray and charge a power supply. Electrical contacts on the surface cleaning apparatus and the storage tray can be shielded when the surface cleaning apparatus is not docked within the storage tray. Furthermore, the storage tray can include a reservoir for a self-cleaning mode.

Abstract: Electronic devices can include a textured exterior surface that is used for controlling functions associated with the electronic device or another electronic device when an object moves along the textured exterior surface. In some examples, the textured exterior surface can be a multi-directional textured surface to enable multi-directional touch functionality. In some examples, sensors of the electronic device can detect signal inputs generated by vibrations caused by the object moving along the textured exterior surface. The signal inputs can be processed to determine the directionality and/or speed of the movement input.

Abstract: A resilient substrate structure, which can be rolled up around an axis, includes a substrate, a working patterned layer and a resilient structure. The substrate has a first surface and a second surface. The substrate is defined with a first edge and a second edge in a direction parallel to the axis. The working patterned layer is arranged on the substrate. The resilient structure is arranged on the second surface. The resilient structure includes a composite layer and a supporting layer, which keep attaching to each other. The composite layer has curve-able segments, each of which is parallel to the axis and connects to the first and second edges. The resilient structure is transformed to contain multiple wavy segments when the resilient substrate structure is at the retraction state. An electronic device including the resilient substrate structure and electronic elements is also disclosed.

Abstract: A display device includes a display panel; a first digitizer layer disposed on the display panel; a second digitizer layer disposed on the display panel and separated from the first digitizer layer; a first plate member disposed on the first digitizer layer; and a second plate member disposed on the second digitizer layer, wherein each of the first plate member and the second plate member includes a plurality of plate portions and one or more hinge portions configured to rotatably connect the plurality of plate portions to each other.

Abstract: The disclosure provides a Light Emitting Diode (LED) display screen, which includes a box body, a power box, a display module and a sealing assembly. The sealing assembly includes: a sealing frame, which is disposed at the first wiring hole and provided with a second wiring hole for avoiding the connecting wire, and a floating gap is formed between the sealing frame and the power box; a first elastic seal ring, which is disposed on the sealing frame and surrounds the second wiring hole, and the display module is connected with the sealing frame and is in butt fit with the first elastic seal ring; and a second elastic seal ring, an outer side of the second elastic seal ring is connected with the power box, an inner side of the second elastic seal ring is connected with the sealing frame and surrounds the second wiring hole.

Abstract: A display apparatus includes an at least partially deformable display, an at least partially deformable apron, the apron is coupled to the display and moves in a vertical direction to change an externally exposed area thereof, a housing for accommodating at least a portion of each of the display and the apron, a base coupled to the housing, a guide having a first end mounted on the apron and a second end mounted on the base, the guide moves the display and the apron in the vertical direction to change an externally exposed area of each of the display and the apron, and a moving supporter having a first end mounted on the apron to move in the vertical direction and a second end mounted on the base to move in a lateral direction with respect to the base.

Abstract: Disclosed is a method for manufacturing a display panel. The method includes: providing a display back plate, wherein the display back plate is provided with a light emitting side; attaching a protective film on the light emitting side of the display back plate, wherein the protective film comprises a transparent adhesive layer disposed on the display back plate and a heavy release film disposed on a side, distal from the display back plate, of the transparent adhesive layer; treating the transparent adhesive layer; and removing the heavy release film, and attaching a functional layer on a side, distal from the display back plate, of the transparent adhesive layer.

Abstract: An electronic device includes a first and second body, a hinge unit configured to connect to the first and second body, and a flexible display disposed on the hinge unit, the first, and second body, wherein the hinge unit includes a bendable support member supported by the first and second body, and a plurality of slit members, wherein each slit member includes a fixed end that is supported by the support member and a free end that extends toward the flexible display, and wherein the plurality of slit members are arranged in a longitudinal direction relative to the flexible display and are spaced apart by an interval, wherein the free ends limit a curvature of the flexible display in a folded state by moving closer to each other and touching.

Abstract: A display includes a polygonal display region and a plurality of non-display portions. The non-display portions are coupled to side edges of the display region in a one-to-one correspondence. At least two of the non-display portions are bent to a back side of the display region. When the non-display portions bent to the back side include adjacent non-display portions, there is an opening between two adjacent non-display portions.

Abstract: This application provides a display assembly and an electronic device. The display assembly includes a display screen and a support member. The support member is fastened to a non-display side of the display screen. A first metal plate is disposed facing a first non-bending region. A second metal plate is disposed facing a bending region. A third metal plate is disposed facing a second non-bending region. The second metal plate is capable of being bent. At least two first elongated through hole groups of the second metal plate are arranged in a first direction. Each first elongated through hole of each first elongated through hole group extends in the first direction. A plurality of first elongated through holes in a same first elongated through hole group are arranged at intervals in a second direction. In the first direction, a sum of lengths of a first end part and a second end part of the first elongated through hole is less than a length of the middle part of the first elongated through hole.

Abstract: Disclosed is a method for constructing a digital hologram to be displayed by of a display system. The display system includes a light modulator producing a light beam and a convergent optical device designed to make the light beam converge towards a focal point. The scene is defined by a set of luminous elements. The construction method includes a step of determining values respectively associated with the pixels of the digital hologram by summing the light contributions respectively produced by the luminous elements with weighting, for each of the light contributions, by a correction coefficient depending on the area of the intersection of a surface between the convergent optical device and the focal point, and a pencil of light having a predetermined angular opening and transmitted through the convergent optical device from the luminous element producing the light contribution concerned. An associated holographic system is also described.

Abstract: An apparatus of a junction box component housed in a junction box and designed to be coupled to a power generator. The junction box component may include one or more bypass mechanisms configured to bypass one or more substrings of the power generator in a case of malfunction or mismatch between the substring and the remainder of the power generators. The one or more bypass mechanisms may generate heat which may be transferred out of the junction box. The junction box component may be designed to conduct the heat towards the base of the junction box and/or the cover of the junction box. A heat dissipation mechanism may be mounted on the base and/or the cover. A bypass mechanism may bypass the entire power generator.

Abstract: One aspect of the instant application provides an apparatus for locking a circuit board in position. The apparatus can include a cam latch, a plunger, and a hinge pin coupling the cam latch and the plunger. The cam latch is positioned to rotate around the hinge pin, and the rotation of the cam latch causes a linear motion of the plunger in a plane parallel to a component-mounting surface of the circuit board, thereby facilitating locking and unlocking of the circuit board.

Abstract: A display device includes a liquid crystal module (10, 20, 30) including a display panel (10) and a light emitting unit (20) that illuminates the display panel (10). The light emitting unit (20) includes a support substrate (24) that is disposed to face the display panel (10), a light guide member (21) that is provided between the display panel (10) and the support substrate (24), and has a first end surface (213) and a second end surface (214), a light source (22) that is disposed to face the first end surface (213), and a holding member (25) that is provided between the display panel (10) and the support substrate (24) along an outer edge of the support substrate (24), and has a facing surface joined to the second end surface (214). This display device has a structure suitable for a thin profile.

Abstract: A lighting system includes control adapters and a lighting controller that sends commands and data over an AC power line to power and control the lamps associated with the control adapters. Lighting themes are uniquely programmable color and intensity that are applied to a collection of control adapters to achieve different lighting modes instantly, without the delay that programming each control adapter individually incurs. The plurality of control adapters receive theme lighting information over the power line and store the theme information in memory. The lighting controller sends a single command to the collections of the control adapter groups to apply the theme or a multiple of themes to run in sequence as a pattern. Each control adapter retrieves and applies the theme information associated with the pattern.

Abstract: The present disclosure provides a flexible display panel, a method for forming the flexible display panel and an adhesive application device for the method. The flexible display panel includes a cover plate layer and a screen film layer. The screen film layer includes a plurality of film layers laminated one on another at one side of the cover plate layer, and an adhesive is filled into a gap between an edge of an outermost film layer of the screen film layer relative to the cover plate layer and the cover plate layer.

Abstract: In some embodiments, an electronic device dynamically assigns functionalities to one or more buttons depending on an orientation associated with the device.

Abstract: A touch sensing device includes a base layer, a touch electrode layer, a first reinforcing member, and a touch circuit board. The base layer includes a main area and a protruding area protruding from the main area in a first direction. The touch electrode layer is disposed on a surface of the base layer. The first reinforcing member is disposed on a surface of the protruding area. The touch circuit board is electrically connected to the touch electrode layer. The protruding area includes a bending area and a pad area. The bending area is bent downward. The pad area extends from the bending area in the first direction and overlaps the base layer in a second direction intersecting the first direction in a bent state of the bending area. The touch circuit board is attached to the pad area.

Abstract: A folding displayer support and a display apparatus are provided. The folding displayer support includes a support body, the support body is provided with at least one first bending region extending in a first direction, at least one second bending region extending in a second direction, and at least one bidirectional bending region located at a position where the first bending region intersects with the second bending region, and an included angle is formed between the first direction and the second direction. The first bending region is provided with a first mesh pattern, the second bending region is provided with a second mesh pattern, the bidirectional bending region is provided with a third mesh pattern, a proportion of holes of the first mesh pattern and a proportion of holes of the second mesh pattern are less than a proportion of holes of the third mesh pattern.

Abstract: An electronic device is provided. The electronic device includes a first housing including a first space, a second housing including a second space, the second housing coupled to the first housing such that the second housing is slidable in a first direction, and a bendable member connected to the first housing. The bendable member is partially accommodated in the second space in a slid-in state and is at least partially coplanar to the first housing in a slid-out state. The electronic device includes a flexible display including a first portion disposed to be visible in the slid-in state and a second area extending from the first portion and accommodated in the second space through at least a portion of the bendable member, and a support assembly disposed to be oriented from the first housing toward the second space and configured to press the second housing in a slid-out direction.

Abstract: An operation apparatus for a vehicle is proposed. The operation apparatus includes an operation module capable of moving between a first position and a second position through an opening of a panel provided in the vehicle, and a drive unit that moves the operation module. The drive unit may move the operation module from the first position to the second position to make a button of the operation module conspicuously protrude from a surface of the panel, and may rotate the operation module so that an angle of the button of the operation module can be adjusted to allow a user to conveniently operate the button.