Patent Description:
The present invention relates to a flexible display device for a vehicle, to be applicable to vehicles in all fields, and a method of controlling the same, and more particularly to a device for retracting or extending (hereinafter referred to as 'retracting or extending') a flexible display to be bent or folded.

A center fascia display of a vehicle may display various visual information about the vehicle. Such a display device may also be installed on a dashboard of a vehicle disposed in front of a driver's seat and a front passenger seat, and provides various convenience information such as navigation, vehicle management and operation, Internet, and entertainment.

In this regard, there is a movable display device, and the movable display device is capable of moving up and down or left and right relative to a dashboard. As the display moves along a guide, a driver and a passenger may selectively use the display. In the case of a display in the form of a pop-up, the display may be stored and then extended and used when necessary.

Since an installation position of a fixed display is fixed, the use of space in a vehicle is limited, and as a display size increases, the forward visibility decreases. A pop-up style movable display requires a separate accommodation space for the display, and as the size of the display increases, the size of the accommodation space also increases, limiting the utilization of space in the vehicle. In addition, since an entire screen is operated in an LCD screen display, inefficiency in that all power is used regardless of a degree of exposure of the display remains.

Therefore, it is required to develop a display device having a form and structure for multiplying advantages while minimizing these disadvantages. Background art related to this may be referred to Patent No. <CIT> ('display driving device").

<CIT> discloses a display device which is enabled to wind and unwind a module cover and a display panel without any support structure.

<CIT> discloses a display device. The display panel of the display device is configured to be wound on a roller or unwound from the roller.

<CIT> discloses a display apparatus which allows display surface sizes of different sizes to be adjusted.

<CIT> discloses a flexible display device including a casing, a circuit board, a first reel, a flexible display, and a connecting line.

An object of the embodiments of the present invention is to provide a display device for reducing the size of an accommodation space of a display used in a vehicle.

An object of the present invention is to provide a display device for efficiently retracting or extending a display used in a vehicle from an accommodation space.

An object of embodiments of the present invention is to provide a display device for controlling a degree of exposure of a display according to a purpose of using a display.

In addition, an object of embodiments of the present invention is to provide a display device for saving power for outputting a display image.

It will be appreciated by one of ordinary skill in the art that the objects that could be achieved with the present invention are not limited to what has been particularly described hereinabove and the above and other objects that the present invention could achieve will be more clearly understood from the following detailed description.

According to the present invention, a flexible display device for a vehicle is set forth in claim <NUM>. The flexible display device includes a casing having an opening, a display part to be retracted or extended into or out of the casing through the opening, a display driver configured to move the display part, and a display winder configured to wind the display part based on movement of the display part, wherein the display part is extended base on a plurality of modes having different extension ranges.

The flexible display device for a vehicle further includes a sensor recognizer configured to detect an extension state of the display part, wherein the display driver includes a motor connected to the casing, and a driving arm connecting the motor and the display part, and the display driver is configured to move the display part based on the extension state of the display part, detected by the sensor recognizer.

The display winder includes a rotary drum having an outer circumferential surface on which the display part is to be wound, and the sensor recognizer is configured to detect a rotation state of the rotary drum.

The sensor recognizer may include a plurality of sensors located inside the casing, and a detection part connected to the rotary drum and detected by the plurality of sensors, and the detection part may have a shape for any one of the plurality of sensors to detect a different state from remaining sensors according to the rotation state of the rotary drum.

The sensor may include a photo sensor, the detection part may include one hole, and the hole may be located in a recognition region of any one of the plurality of sensors according to the rotation state of the rotary drum.

The sensor recognizer may include a sensor located inside the casing, and a detection part connected to the rotary drum and passing through a recognition region of the sensor according to rotation of the sensor, the detection part may include a plurality of holes arranged at a predetermined interval, and the sensor may detect the number of the plurality of holes passing through the recognition region.

The device may further include a display control module configured to receive a signal according to input of a user and to control the display driver.

The rotary drum may include a rotary spring, and the rotary spring may apply an elastic force in a direction in which the display part is wound.

According to an embodiment of the present invention, a method of controlling a display device includes selecting a display mode, transmitting information on the selected display mode to the display control module, and controlling a display by the display control module.

The controlling the display may include transmitting a signal according to information on the selected display mode to a motor, rotating the motor to move the display part, and checking movement of the display part.

The transmitting the signal may include transmitting different signals in response to a comparison result of a current display mode and the selected display mode, and the checking may include checking whether the display part is in a state of the selected display mode by the sensor recognizer.

The display part may include a flexible display, and a display cover adhered to a rear surface of the display.

The display part may further include a flexible connecting sheet having one side connected to the display and a remaining side connected to the display winder, and the connecting sheet may be wound by the display winder.

The flexible display device may further include a guide part connected to an inside of the casing and configured to guide movement of the display part, the guide part may perform guidance to have a curvature radius of a path along which the display part moves, in a range of <NUM> to <NUM>.

The display may be a plastic organic light-emitting diode (POLED).

The guide part may include a curvature guide configured to guide a movement path in which the curvature radius is formed, and the curvature guide may include a front curvature guide in contact with a front surface of the display part, and a rear curvature guide in contact with a rear surface of the display part.

The front curvature guide and the rear curvature guide may include a plurality of rollers.

The display driver may include a worm gear part connected to the motor and having a rotation shaft parallel to the motor, and a worm wheel part connected to the worm gear part and having a rotation shaft perpendicular to the motor.

The driving arm may include a first driving arm having one end connected to the worm wheel part and a remaining end connected to the display part, and pivoted by the worm wheel part.

The driving arm may include further includes a second driving arm having one end connected to the remaining end of the first driving arm and a remaining end connected to the display part, pivoting on the same plane as a pivoting plane of the first driving arm, and pivoting in an opposite direction to a pivoting direction of the first driving arm.

The display part may further include an upper fixing plate in surface contact with a partial region of a rear surface of an upper end of the display, and the upper fixing plate may include a guide configured to guide the first driving arm or the second driving arm.

The flexible display device may further include a rear protection cover attachable to and detachable from a rear surface of the display part and configured to cover an exposed rear surface of the display part. The display part and the rear protection cover may include a plurality of magnets provided at related positions in a vertical direction, and the rear protection cover may be attached to and detached from the display part by a magnet.

The rear protection cover may be separated from the display part while being retracted into the casing.

According to an embodiment of the present invention, a flexible display device for a vehicle includes a casing having an opening, a display part to be retracted or extended into or out of the casing through the opening, a display driver configured to move the display part, and a display winder configured to wind the display part based on movement of the display part, wherein the display part includes a flexible plastic organic light-emitting diode (POLED) display, the display winder includes a rotary drum having an outer circumferential surface on which the display part is to be wound and a sensor recognizer configured to detect a rotation state of the rotary drum, and the display part is extended based on a plurality of display modes having different extension ranges.

A flexible plastic organic light-emitting diode (POLED) display may be retracted into a casing or extended out of the casing by winding or unwinding the display on an outer circumferential surface of a rotary drum, and the display may be extended based on a plurality of display modes having different display extension ranges.

According to an embodiment of the present invention, a vehicle including the display device includes a controller configured to receive a display mode selection signal of a user, and a display control module configured to receive the signal from the controller and control a display mode of the device.

Advantages and features of the present invention, and methods of achieving them may be clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. It is provided to fully inform one of ordinary skill in the art of the scope of the present invention, and the present invention is only defined by the scope of the claims.

Terminology used herein is for describing the embodiments and is not intended to be limiting. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. As used herein, "comprises" and/or "comprising" does not exclude the presence or addition of one or more other elements other than the recited elements. Like reference numerals throughout the specification refer to like elements, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first element mentioned below may also be the second element.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings commonly understood by one of ordinary skill in the art to which the present invention pertains. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly specifically defined.

The spatially relative terms "below", "beneath", "lower", "above", "upper", etc. may be used to easily describe a component's correlation with other components. Spatially relative terms should be understood as including different orientations of elements in use or operation in addition to the orientations shown in the drawings. For example, if a component that is shown in a drawing is inverted, a component described as "below" or "beneath" another component may be placed "above" the other component. Thus, the exemplary term "below" may include directions of both below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

<FIG> is a perspective view of a flexible display device for a vehicle (hereinafter referred to as a 'display device') <NUM> according to the present embodiment. <FIG> is a front perspective view showing the inside of the display device <NUM>. <FIG> shows the display device <NUM> in a state in which a side casing <NUM> and an upper casing <NUM> are excluded from <FIG>.

<FIG> and <FIG> are a front perspective view and a rear perspective view showing the inside of the display device <NUM>. <FIG> and <FIG> show the display device <NUM> except for a side fixing frame <NUM> in <FIG>.

<FIG> are a front perspective view and a rear perspective view showing the inside of the display device <NUM>. <FIG> show a state of the display device <NUM> except for a bracket (or frame), a screw, a clip, a rod (or bar), etc. for fixing a bottom fixing frame <NUM> and other parts in <FIG> and <FIG>.

In the drawings, some components may be omitted to describe components located inside the casing of the display device <NUM>, and each diagram may represent a flexible display device for a vehicle according to embodiments of the present invention.

Referring to <FIG> (4A to 4D), the display device <NUM> may include a casing having an opening, a display part <NUM> to be retracted or extended into or out of the casing through the opening, a display driver <NUM> for moving the display part <NUM>, a guide part <NUM> for guiding the display part <NUM>, and a display winder <NUM> for winding the display part <NUM>.

The casing may include the side casing <NUM> and the upper casing <NUM>, and the side casing <NUM> and the upper casing <NUM> may be assembled together. In addition, the casing may include an inner space, and thus other components may be placed in the inner space of the casing. The casing may include an opening, and the opening may be formed in a size for the display part <NUM> to be retracted or extended (hereinafter referred to as 'retracted or extended') into or out of the casing. The casing may protect the components located in the inner space and improve the appearance of the device. The shape of the casing is not limited to that shown in the drawings, and one of ordinary skill in the art to which the present invention pertains (hereinafter referred to as 'one of ordinary skill in the art') may appropriately change within the scope of the present claims.

The display part <NUM> may include components related to a display screen displaying various vehicle-related information. For example, the display part <NUM> may include a display <NUM>, a connecting sheet <NUM>, and a display cover <NUM>.

<FIG> is an exploded view of the display part <NUM> of the display device <NUM>, and shows components of the display part <NUM>.

The display <NUM> may be a flexible or rollable display <NUM>. The display <NUM> may be a plastic organic light-emitting diode (POLED). The POLED is an OLED applied with a polyimide (PI) substrate, a type of plastic, and may be implemented with a curved surface.

The display <NUM> may be bent, and a curvature radius at which the display <NUM> is bent may be at least <NUM> or more. In detail, the radius of curvature of the display <NUM> may be at least <NUM> or more. The display <NUM> may include a light emitting diode (LED), an OLED, an AMOLED, and a PMOLED. The width and height of the display <NUM> may be appropriately designed by one of ordinary skill in the art.

The connecting sheet <NUM> may have one side connected to a lower end of the display <NUM> and the other side connected to the display winder <NUM>. In addition, the connecting sheet <NUM> may be flexible and may be wound or unwound through the display winder <NUM>. One side of the connecting sheet <NUM> may be attached to the display <NUM> using a double-sided tape. The connecting sheet <NUM> may include a sheet formed of a PET material. The material of the connecting sheet <NUM> may be appropriately selected by one of ordinary skill in the art in consideration of flexibility.

The display <NUM> and the connecting sheet <NUM> may be connected, and the connecting sheet <NUM> may be wound or unwound by the display winder <NUM>. Therefore, when the display <NUM> is retracted into a casing, the display winder <NUM> may wind the connecting sheet <NUM>, and when the display <NUM> is extended out of the casing, the display winder <NUM> may unwind the connecting sheet <NUM>.

The display cover <NUM> may be a cover protecting rear surfaces of the display <NUM> and the connecting sheet <NUM>. The display cover <NUM> may supplement the display <NUM> and the connecting sheet <NUM>, which do not have rigidity. The display cover <NUM> may include a plurality of covers that are long in a horizontal direction and short in a vertical direction. The plurality of covers may be adhered to the rear surface of the display <NUM> or the rear surface of the connecting sheet <NUM> through a double-sided adhesive <NUM>. The double-sided adhesive <NUM> may include a double-sided tape such as a FOAM tape. The double-sided adhesive <NUM> may be separately applied to the plurality of covers of the display cover <NUM>. The widths of the plurality of covers of the display cover <NUM> may be greater than or equal to the width of the display <NUM>. The heights of the plurality of covers may be appropriately designed by one of ordinary skill in the art in consideration of whether to flexibly respond to bending of the display <NUM>.

The display cover <NUM> may further include a magnetism part <NUM> at both ends in a horizontal direction. The magnetism part <NUM> may utilize a magnetic force for attachment to and detachment from a rear protection cover <NUM> (refer to <FIG>) to be described later. For example, an externally exposed portion of the display part <NUM> may be protected by attaching the rear protection cover <NUM> (refer to <FIG>), and an inner portion of the casing of the display part <NUM> may be separated from the rear protection cover <NUM> (refer to <FIG>).

The display part <NUM> may further include an upper fixing plate <NUM>, a top fixing clip <NUM>, and a connection reinforcing part <NUM>.

The upper fixing plate <NUM> may be a flat plate in surface contact with a part of an upper end of the rear surface of the display <NUM>. A width of the upper fixing plate <NUM> may be at least equal to or greater than a width of the display <NUM>. The top fixing clip <NUM> may be connected to the upper fixing plate <NUM> at an upper end of a front surface of the display <NUM>. An upper end of the display <NUM> may be fixed by connecting the top fixing clip <NUM> and the upper fixing plate <NUM>. The upper fixing plate <NUM> and the top fixing clip <NUM> may protect the upper end of the flexible display <NUM>, and the upper fixing plate <NUM> may be connected to the display driver <NUM> to be described later to receive power of a motor. In addition, the upper fixing plate <NUM> and the top fixing clip <NUM> may improve the appearance of the display device.

The material of the upper fixing plate <NUM> and the top fixing clip <NUM> includes aluminum (AL), and other materials having appropriate rigidity may be applied thereto by one of ordinary skill in the art.

The connection reinforcing part <NUM> is a component for overcoming the vulnerability of a connection part between the display <NUM> and an sPCB.

<FIG> is an enlarged view of a lower connection portion of the display <NUM> to explain the connection reinforcing part <NUM>.

The display <NUM> may be connected to a sPCB through a flexible flat cable (FFC), and the FFC may be damaged by an external force when the display <NUM> is moved. Therefore, the connection reinforcing part <NUM> may protect the FFC by fixing the FFC on front and rear surfaces of the display <NUM> or the connecting sheet <NUM>. In the connection reinforcing part <NUM>, two members having a length in a horizontal direction may be coupled to each other at the front and rear surfaces of the display <NUM> with the display <NUM> therebetween. By coupling the two members, the FFC may be fixed, and may be maintained in a shape that is not subjected to an external force. Coupling of the two members may be performed through a double-sided tape or screw fastening.

The display <NUM> may be connected to an sPCB and a cPCB, and final control may be performed by a main PCB.

The display driver <NUM> is a component moving the display part <NUM>.

<FIG> is an exploded view of the display driver <NUM>. The configuration of the display driver <NUM> may be referred to <FIG> and <FIG>.

The display driver <NUM> may include a motor <NUM> connected to the inside of a casing, a worm gear part <NUM> connected to the motor <NUM>, a worm wheel part <NUM> connected to the worm gear part <NUM>, a first driving arm <NUM> connected to the worm wheel part <NUM>, and a second driving arm <NUM> connected to the first driving arm <NUM>.

Rotation of the motor <NUM> may be controlled by a controller (not shown). For example, an operation of the motor <NUM> may be controlled to appropriately retract or extend the display part <NUM>. The display part <NUM> may have different levels of exposure extended to the outside of the casing depending on an exposure mode, and the motor <NUM> may adjust an exposure range of the display part <NUM> by controlling an operation according to an exposure mode selected by a user. The motor <NUM> may be a stepping or hybrid motor.

The worm gear part <NUM> may include a rod rotating on a rotation shaft parallel to the motor <NUM> and a worm gear connected to the rod. The worm gear part <NUM> may rotate by rotation of the motor <NUM>, and may be connected to the motor <NUM> through a timing belt <NUM> and may operate.

<FIG> illustrates a connection portion of the motor <NUM> of the display driver <NUM>. The motor <NUM> may rotate the rod of the worm gear part <NUM> using the timing belt <NUM>.

The worm wheel part <NUM> may be connected to the worm gear part <NUM> and include a worm wheel gear having a rotation shaft perpendicular to the rotation shaft of the motor <NUM> or the worm gear part <NUM>. As shown in <FIG>, since a rotation shaft of the motor <NUM> is horizontal to the left and right of the display device <NUM>, a rotation shaft of the worm wheel part <NUM> may be perpendicular to an exposed surface of the display <NUM>. The worm wheel part <NUM> may rotate on a virtual plane parallel to the plane of the display <NUM> by rotation of the motor <NUM>.

The first driving arm <NUM> may have one end connected to the worm wheel part <NUM> and pivot according to rotation of the worm wheel part <NUM>. The first driving arm <NUM> may be an arm member having a predetermined length and may pivot on a virtual plane parallel to an exposed surface of the display part <NUM>. The first driving arm <NUM> may be located adjacent to a rear surface of the display part <NUM>.

One end of the second driving arm <NUM> may be pivotably connected to the other end of the first driving arm <NUM>, and the other end of the second driving arm <NUM> may be pivotably connected to an upper end of the display part <NUM>. The first driving arm <NUM> and the second driving arm <NUM> may be connected in the form of meshing teeth as shown in the drawing. A connecting portion of the first driving arm <NUM> and the second driving arm <NUM> may be connected to a gear (e.g., a spur gear), and thus when the first driving arm <NUM> pivots, the second driving arm <NUM> may also pivot. Accordingly, the second driving arm <NUM> may pivot according to rotation of the worm wheel part <NUM>.

The second driving arm <NUM> may be an arm member having a predetermined length and may pivot on a virtual plane parallel to an exposed surface of the display part <NUM>. That is, the second driving arm <NUM> may pivot on the same plane as a pivoting plane of the first driving arm <NUM>. However, the second driving arm <NUM> may pivot in a direction opposite to that of the first driving arm <NUM>. For example, when the first driving arm <NUM> pivots clockwise, the second driving arm <NUM> may pivot counterclockwise. The second driving arm <NUM> may be positioned adjacent to the rear surface of the display part <NUM>, and movement of the second driving arm <NUM> may be guided by a guide provided in the upper fixing plate <NUM>.

As shown in <FIG>, the upper fixing plate <NUM> may have a groove for guiding the second driving arm <NUM>. Although not shown, the upper fixing plate <NUM> may include a groove for guiding the first driving arm <NUM>.

The display driver <NUM> may further include an arm joint <NUM> for fixing a connection state between the first driving arm <NUM> and the second driving arm <NUM>. The arm joint <NUM> may ensure that cogwheels of the first drive arm <NUM> and cogwheels of the second drive arm <NUM> are well engaged but connection therebetween is not released.

A joint spacer <NUM> may be added to a connection portion between the first driving arm <NUM>, the second driving arm <NUM>, and the arm joint <NUM> to remove a gap formed by an assembly step. The joint spacer <NUM> may be positioned in an interval between the first driving arm <NUM> and the arm joint <NUM> and between the second driving arm <NUM> and the arm joint <NUM>, and thus the aforementioned gap may be removed. The joint spacer <NUM> may minimize a front-back tilt of the display part <NUM> that may occur in a situation in which the display part <NUM> is extended to the maximum.

The worm wheel part <NUM>, the first driver <NUM>, and the second driver <NUM> may be provided symmetrically left and right with respect to the center of the display part <NUM>. That is, the display driver <NUM> may include a pair of first driving parts <NUM> that are left and right symmetric, a pair of second driving parts <NUM> that are left and right symmetric, and a pair of the worm wheel parts <NUM> that are left and right symmetric.

At this time, rotation directions of the pair of first drivers <NUM> are opposite to each other, and rotation directions of the pair of second drivers <NUM> are opposite to each other.

The other ends of the pair of second drivers <NUM> may be rotatably connected to the upper end of the display part <NUM>, and the upper arm joint <NUM> for connecting the second driver <NUM> to the upper end of the display part <NUM> may be provided. The upper arm joint <NUM> may have a predetermined length in a horizontal direction, and both ends thereof may be rotatably connected to the other ends of the pair of second drivers <NUM>, respectively. The upper arm joint <NUM> may be connected to an upper end of the upper fixing plate <NUM> of the display part <NUM>.

The first driver <NUM> and the second driver <NUM> may include a metal material and may be formed of aluminum (AL). Materials of the arm joint <NUM> and the upper arm joint <NUM> may include steel electrolytic cold commercial (SECC) or SUM specified in the Korean Industrial Standards (KS). A material of the joint spacer <NUM> may include PET. A material of the worm wheel gear may include Polyoxymethylene (POM), and a material of the worm gear may include brass.

Hereinafter, movement of the display driver <NUM> will be described.

<FIG> is a diagram to explain an operation process of the display driver <NUM> of the display device <NUM>. <FIG> shows the display driver <NUM> in a state in which the display part <NUM> is not exposed, and <FIG> shows the display driver <NUM> in a state in which the display part <NUM> is exposed to the maximum.

Referring to a process of extending the display part <NUM> from <FIG>, rotation of the motor <NUM> may cause the worm gear part <NUM> to rotate. When the worm gear part <NUM> rotates, the pair of the worm wheel part <NUM> may rotate clockwise and counterclockwise, respectively. The pair of first driving parts <NUM> each rotate in the same direction as the pair of the worm wheel parts <NUM>. Therefore, the other end (connection portion with the second driver) of the first driver <NUM> gradually rises upward, and the second driver <NUM> connected to the first driver <NUM> rotates in an opposite direction to a direction of rotation of the first driver <NUM>. The other end (a connection portion of the upper arm joint <NUM>) of the second driver <NUM> is rotatably connected to a point at an upper end of a rear surface of the display part <NUM>. Accordingly, the second driver <NUM> may raise the display part <NUM>.

A process of retracting the display part <NUM> from <FIG> may be performed by rotating the motor <NUM> in an opposite direction to the above description.

<FIG> is an exploded view of the guide part <NUM> of the display device <NUM>, and <FIG> shows arrangement of the guide part <NUM>.

The guide part <NUM> is connected to the inside of a casing and is a component that guides movement of the display part <NUM>. The guide part <NUM> may guide the display part <NUM> to have a path along which the display part <NUM> moves and which has a curvature radius in a range of <NUM> to <NUM>. In detail, the guide part <NUM> may guide the display part <NUM> to have a path along which the display part <NUM> moves and which has a curvature radius R in a range of <NUM> to <NUM>. The display part <NUM> may be bent according to the curvature radius guided by the guide part <NUM> as being retracted or extended into or out of the casing.

The guide part <NUM> may include a curvature guide for guiding a movement path in which a curvature radius is formed, and the curvature guide may include a front curvature guide <NUM> in contact with a front surface of the display part <NUM>, and a rear curvature guide <NUM> in contact with a rear surface of the display part <NUM>. The front curvature guide <NUM> and the rear curvature guide <NUM> may include a plurality of rollers. The size and shape of the roller may be appropriately selected by one of ordinary skill in the art.

The curvature guide of the guide part <NUM> may include a plurality of rollers connected to a guide fixing bar <NUM> disposed in left and right directions in an inner space of the casing, or may include a plurality of rollers fixed to various frames or brackets of the part fixing part <NUM> (refer to <FIG>) inside the casing.

In addition, the guide part <NUM> may further include a first straight guide <NUM> and a second straight guide <NUM> that guide the display part <NUM> in a vertical or horizontal direction. Referring to <FIG>, the first straight guide <NUM> guides the display part <NUM> in a vertical direction, and the second straight guide <NUM> guides the display part <NUM> in a horizontal direction.

A material of the plurality of rollers may include rubber or polyoxymethylene (POM). In addition, a material of the frame or bracket for fixing the rollers may include steel electrolytic cold commercial (SECC) or SUM specified in the Korean Industrial Standards (KS).

The guide part <NUM> may also function as a guide in a manner different from that shown in the drawings. One of ordinary skill in the art may apply a known guide method, and the guide part <NUM> of the present specification may include a known guide method.

<FIG> is an exploded view of the display winder <NUM> of the display device <NUM>.

The display winder <NUM> is a component for winding the display part <NUM> according to retraction and extension of the display part <NUM>. The display winder <NUM> includes a rotary drum <NUM> and a sensor recognizer <NUM> for detecting a rotation state of the rotary drum <NUM>.

The rotary drum <NUM> rotates around a drum shaft <NUM> installed in left and right horizontal directions inside a casing as a center shaft. In addition, the rotary drum <NUM> may have a cylindrical shape, and the display part <NUM> may be wound or unwound again on an outer circumferential surface of the cylindrical shape. The rotary drum <NUM> may include a rotary spring <NUM>. The rotary spring <NUM> applies an elastic force for the rotary drum <NUM> to rotate in a direction in which the display part <NUM> is wound. Therefore, the display part <NUM> may be pulled downward by the rotary spring <NUM>, and a display screen may be maintained flatter than before by the force.

The rotary drum <NUM> may further include a spring case <NUM>, a cap <NUM>, and a holder <NUM>. The spring case <NUM> may be a case having an inner space for accommodating the rotary spring <NUM>, and the cap <NUM> may be a component for closing the opening of the spring case <NUM> in which the rotary spring <NUM> is accommodated. The holder <NUM> may be a component that fixes the positions of the components (spring case and cap) related to the rotary spring <NUM>.

The sensor recognizer <NUM> detects a rotation state of the rotary drum <NUM>. the sensor recognizer <NUM> may include a plurality of sensors <NUM> and a detection part <NUM> sensed by the plurality of sensors. The detection part <NUM> may rotate with the rotary drum <NUM> and may be detected by at least one sensor among the plurality of sensors <NUM>.

Sensing states of the plurality of sensors <NUM> may be different according to a rotation state of the rotary drum <NUM>, and an operation of the motor <NUM> may be controlled based on the sensing state of the plurality of sensors <NUM>. In other words, based on the rotation state of the rotary drum <NUM>, one of the plurality of sensors <NUM> may recognize a state different from the other sensors, and the operation of the motor <NUM> may be controlled accordingly.

A material of the rotary drum <NUM> may include acrylonitrile butadiene styrene (ABS), a material of the spring case <NUM>, the cap <NUM>, and the holder <NUM> may include polyoxymethylene (POM), and a material of the rotary spring <NUM> may include SUS. A material of a bracket related to the display winder <NUM> may include steel electrolytic cold commercial (SECC).

<FIG> shows the inside of a display device from the side.

Referring to <FIG>, R2 denotes a radius of a cross section of the rotary drum <NUM> having a circular cross section, and R1 denotes a radius of curvature at which the display part <NUM> is bent. The radius R2 of the cross section of the rotary drum <NUM> may be at least equal to or larger than R1.

<FIG> shows components related to the rotary spring <NUM> of the display device.

(a) of <FIG> shows the case in which the rotary drum <NUM>, the spring case <NUM>, the rotary spring <NUM>, and the holder <NUM> are coupled, and (b) of <FIG> is an enlarged view of the rotary spring <NUM>.

Referring to (a) of <FIG>, the spring case <NUM> is fixed to a left or right end of the rotary drum <NUM>, and the rotary spring <NUM> is accommodated in an accommodation space inside the spring case <NUM>. The holder <NUM> is located in a central portion of the accommodation space of the spring case <NUM> to maintain a constant state irrespective of rotation of the rotary drum <NUM>.

Referring to (b) of <FIG>, the rotary spring <NUM> is formed of of an elastic object having a spiral shape, and the rotary spring <NUM> may include a first fixing hook <NUM> on the outside of the spiral shape and a second fixing hook <NUM> on a central portion of the spiral shape.

Referring to (a) of <FIG>, the first fixing hook <NUM> of the rotary spring <NUM> is connected to a groove formed inside the spring case <NUM>, and the second fixing hook <NUM> of the rotary spring <NUM> is connected to a groove formed in the holder <NUM>. When the rotary drum <NUM> rotates, the spring case <NUM> also rotates, and as the spring case <NUM> rotates, the position of the first fixing hook <NUM> changes. In contrast, since the second fixing hook <NUM> is connected to the holder <NUM> in a constant state, the position of the fixing hook <NUM> does not change. In the end, since relative positions of the first fixing hook <NUM> and the second fixing hook <NUM> of the rotary spring <NUM> change, an elastic force to return the relative positions of the first fixing hook <NUM> and the second fixing hook <NUM> to an original state is generated. Since the elastic force eventually acts on the rotary drum <NUM>, the rotary drum <NUM> receives a force to return to an initial state by the rotary spring <NUM>.

The elastic force of the rotary spring <NUM> acts in a direction in which the rotary drum <NUM> winds the display part <NUM>.

<FIG> shows a direction of the elastic force acting on the rotary drum <NUM> of the display device. A rotation direction of the rotary drum <NUM> is indicated by a solid arrow, and a direction in which an elastic force of the rotary spring <NUM> acts is indicated by a dotted arrow. As shown in the drawing, when the rotary drum <NUM> rotates in a direction in which the display part <NUM> is unwound, the elastic force of the rotary spring <NUM> acts in a direction in which the display part <NUM> is pulled.

<FIG> is a diagram for explaining control of exposure of a display according to rotation of the display winder <NUM>.

<FIG> illustrates a principle by which the sensors <NUM> recognize the detection part <NUM>.

Referring to (a) of <FIG>, the plurality of sensors <NUM> is fixed at a position in which rotation of the rotary drum <NUM> is to be sensed. According to the present embodiment, the plurality of sensors <NUM> may be connected to an inner surface of a casing positioned adjacent to the rotary drum <NUM> or other places such as a bracket having a fixed position. That is, the sensors <NUM> may not rotate with the rotary drum <NUM>, but may detect a rotation state of the rotary drum <NUM> at a certain position.

The detection part <NUM> is connected to the rotary drum <NUM> and rotates therewith when the rotary drum <NUM> rotates.

The detection part <NUM> may have an appropriate shape for any one of the plurality of sensors <NUM> and the remaining sensors to detect different states. Accordingly, the detection part <NUM> may have various shapes depending on installation positions of the plurality of sensors <NUM>.

According to an embodiment, when the plurality of sensors <NUM> includes a first sensor, a second sensor, a third sensor, and a fourth sensor, the shape of the detection part <NUM> may be provided such that when the first sensor recognizes the detection part <NUM> (on), the second sensor to the fourth sensor do not recognize the detection part <NUM> (off). In contrast, the shape of the detection part <NUM> may be provided such that if the first sensor does not recognize the detection part <NUM> (off), the remaining sensors (the second to fourth sensors) recognize the detection part <NUM> (on).

Referring to (a) of <FIG> and <FIG>, the detection part <NUM> has a shape protruding from an end of the rotary drum <NUM> to pass through an area in which each of the sensors <NUM> recognizes (on or off) according to rotation of the rotary drum <NUM>. Here, the area recognized by the sensors <NUM> may indicate an area in which the sensors <NUM> are capable of recognizing the detection part <NUM>. The sensors <NUM> may include a photosensor, and the detection part <NUM> may include a hole <NUM>.

The hole <NUM> may be a hole formed in the detection part <NUM>, and the sensors <NUM> may differently sense the hole <NUM> and the remaining part of the detection part <NUM>. The remaining part of the detection part <NUM> blocks a space between a light emitting part and a light receiving part of the sensors <NUM> (refer to (b) of <FIG>), whereas the hole <NUM> of the detection part <NUM> opens the space between the light emitting part and the light receiving part of the sensors <NUM> (refer to (c) of <FIG>), and thus the sensors <NUM> may detect the hole <NUM> differently from the remaining part. A display device according to embodiments may have a configuration other than a hole such as the hole <NUM> depending on a type of sensor.

When the rotary drum <NUM> rotates, the detection part <NUM> rotates, and the position of the hole <NUM> formed in the detection part <NUM> may be changed. When the rotary drum <NUM> rotates by a predetermined angle and the position of the hole <NUM> is in a recognition area of any one of the sensors <NUM>, the corresponding sensor may recognize the hole <NUM>. Thus, based on which sensor detects the hole <NUM>, a degree by which the rotary drum <NUM> rotates may be recognized. When a rotation state of the rotary drum <NUM> is classified for each mode, an exposure range of the display part <NUM> may be controlled.

Referring to (b) of <FIG>, a first mode is a state in which the display part <NUM> is retracted and the rotary drum <NUM> winds the display part <NUM> to the maximum.

It may be seen that when the hole <NUM> of the detection part <NUM> is located in a recognition region of a first sensor 472a, an exposure mode of the display part <NUM> is the first mode. It may be seen that when the rotary drum <NUM> rotates and the hole <NUM> is located in a recognition region of a second sensor 472b, the exposure mode of the display part <NUM> is a second mode. Similarly, a third mode and a fourth mode may also be distinguished depending on which sensor with a recognition region in which the hole <NUM> is located.

For example, when the second mode is executed according to user selection, the display driver <NUM> may drive the motor <NUM> to extend the display part <NUM> and the rotary drum <NUM> rotates accordingly. At a moment at which the display part <NUM> is exposed in the second mode, the plurality of sensors <NUM> may recognize that the second mode is entered. In this case, sensing states (on or off) of the second sensor 472b corresponding to the second mode and the remaining sensors among the plurality of sensors <NUM> may become different. For example, the second sensor 472b may be in an on state, and the remaining sensors may be in an off state. The display device <NUM> may be recognized to become in the second mode state and an operation of the motor <NUM> may be stopped.

In the case of the third mode, the display part <NUM> is exposed more than the second mode. When the third mode is executed by user selection, the display driver <NUM> may drive the motor <NUM> to further extend the display part <NUM>, and when the sensor recognizer <NUM> recognizes that the third mode is entered, driving of the motor <NUM> may be stopped.

In the same way, the display device <NUM> may differently control a degree of exposure of the display part <NUM> according to various modes. An exposure mode of the display part <NUM> may be divided into four modes including the first mode in which the display part <NUM> is completely retracted into the casing and the fourth mode in which the display part <NUM> is completely extended out of the casing. Each mode may be classified according to a type and function of information displayed on the display <NUM>. For example, the third mode may be used on a navigation screen, and the fourth mode may be used when a video or game is played.

An exposure mode of the display device <NUM> may be classified into more types of modes according to an exposure range, and the number of the sensors <NUM> may be one or more.

<FIG> shows the detection part <NUM> and the hole <NUM> according to another embodiment.

Referring to <FIG>, the detection part <NUM> may include a plurality of holes <NUM> arranged at a predetermined interval. The plurality of holes <NUM> may pass through the recognition region of the sensor <NUM> while the rotary drum <NUM> rotates, and the sensor <NUM> may detect the number of holes <NUM> passing through the recognition region. That is, the sensor <NUM> may detect the number of the holes <NUM> passing through the recognition region. Accordingly, a rotation angle of the rotary drum <NUM> may be calculated based on the number of holes <NUM> detected by the sensor <NUM>.

According to the embodiment shown in <FIG>, the sensor recognizer <NUM> may include one sensor <NUM>, and the detection part <NUM> may include the plurality of holes <NUM> arranged at a predetermined interval. The number and interval of the plurality of holes <NUM> may be appropriately determined by one of ordinary skill in the art.

<FIG> shows a degree by which the display part <NUM> is extended according to a first mode to a fourth mode. The first mode may represent a state in which the display part <NUM> is completely accommodated inside a casing, and the fourth mode may represent a state in which the display part <NUM> is extended out of the casing to the maximum. The second mode and the third mode may be distinguished according to an extension degree of the display part <NUM>. The number of modes of the display part <NUM> may be variously set as needed.

<FIG> shows a method of controlling the display device <NUM> (hereinafter referred to as a "control method") according to an embodiment of the present invention. <FIG> shows components of a vehicle for performing the control method. The components of the vehicle shown in <FIG> may be configured by hardware, software, or a combination thereof, and the components may not be clearly physically separated, but conceptually separated according to a function to be performed.

Referring to <FIG>, the control method includes selecting a display mode (S1410), transmitting display mode information in a head unit (or controller) (S1420), and/or controlling a display in a display module (S1430).

In the selecting the display mode (S1410), a specific exposure mode of a display is selected as a user manipulates an interface of a vehicle. The user may select a navigation mode, a movie mode, a general mode, or the like through the interface of the vehicle as needed. A display mode corresponding to each mode may be selected according to user selection. For example, when the user selects and activates a navigation function, the third mode may be selected as a display mode related to a navigation device.

In the transmitting the display mode information in the controller (or head unit) (S1420), the display mode information selected by the user is transmitted to a display control module <NUM>. In this case, a controller <NUM> may be a component for processing/calculating data to control the vehicle and may be referred to as a head unit generally.

In the controlling the display in the display control module <NUM> (S1430), the display control module <NUM> controls movement of the display part <NUM> based on information on an input display mode.

The controlling the display (S1430) may include transmitting a signal to the motor <NUM> (S1432), moving the display part <NUM> by pivoting the first driving arm <NUM> or the second driving arm <NUM> by the motor <NUM> (S1434), and/or checking movement of the display part <NUM> by the sensors <NUM> (S1435).

The transmitting the signal to the motor <NUM> (S1432) and the moving the display part <NUM> by pivoting the first driving arm <NUM> or the second driving arm <NUM> by the motor <NUM> (S1434) indicates that the display driver <NUM> operates and moves the display part <NUM>.

In the transmitting the signal to the motor <NUM> (S1432), the motor <NUM> rotates by receiving a signal corresponding to display mode information. According to rotational driving of the motor <NUM>, the worm gear part <NUM> and the worm wheel part <NUM> connected to the motor <NUM> operate, and accordingly, the first driving arm <NUM> and/or the second driving arm <NUM> may operate to retract or extend the display part <NUM>.

In the checking movement of the display part <NUM> by the sensors <NUM> (S1435), the sensors <NUM> may detect a rotation state of the rotary drum <NUM> to check whether the display part <NUM> moves according to input mode information. When the display part <NUM> is in a state of moving according to the input mode information, the motor <NUM> stops an operation thereof.

<FIG> is a flowchart of an example of control of an exposure mode of a display. The control method shown in <FIG> may be performed by the display control module <NUM> of <FIG>.

The control method may include comparing an input mode and a current mode (S1442), rotating a motor in a first direction or a second direction in response to the comparison result (S1444), checking whether the display part <NUM> moves according to the input mode by the sensor part <NUM> (S1446), and stopping driving of the motor in response to the checking result (S1448).

In the comparing the input mode and the current mode (S1442), the current mode and the input mode of the display part <NUM> may be compared with each other. For example, when the current mode is a first mode and the input mode is a second mode, the first mode and the second mode may be compared with each other. Accordingly, the display control module <NUM> may determine a direction in which the motor <NUM> is to be driven in order to move the display part <NUM> in the input mode.

Mode information corresponding to specific values in respective modes may be compared with each other. For example, when the first mode as the current mode corresponds to <NUM> and the second mode as the input mode corresponds to <NUM>, the value corresponding to the input mode may be determined to be greater than the value corresponding to the current mode.

In the rotating the motor in the first direction or the second direction in response to the comparison result (S1444), when a value corresponding to the input mode is greater than a value of the current mode, the motor may rotate in the first direction. When a value corresponding to the input mode is smaller than a value corresponding to the current mode, the motor may rotate in the second direction.

When the current mode is the first mode and the input mode is the third mode, a value of the input mode is greater than a value of the current mode, and thus the motor <NUM> may rotate in the first direction to extend the display part <NUM>. In contrast, when the current mode is a third mode and the input mode is the first mode, a value of the input mode is smaller than a value of the current mode, and thus the motor <NUM> may rotate in the second direction to retract the display part <NUM>.

In the checking whether the display part <NUM> moves according to the input mode by the sensor part <NUM> (S1446), the sensor part <NUM> checks a rotation state based on the contents described in <FIG>. The sensor part <NUM> may check whether the rotary drum <NUM> rotates according to the input mode based on information detected by the sensors <NUM>.

In the stopping driving of the motor in response to the checking result of operation S01446 (S1448), when the sensor part <NUM> checks the rotary drum <NUM> rotates according to the input mode, driving of the motor <NUM> may be stopped.

When the rotary drum <NUM> does not rotate as much as the input mode, the motor <NUM> continues to drive. For example, when the display part <NUM> is in the third mode while moving from the first mode to the fourth mode, the display control module <NUM> may continue to rotate the motor because the input mode, the fourth mode, is not reached.

When the rotary drum <NUM> rotates excessively beyond the input mode, the current mode and the input mode may be compared with each other and the motor <NUM> may be rotated in an opposite direction to a previous one. For example, when the display part <NUM> moves from the first mode to the third mode and is extended more than the third mode state, the current state recognized by the sensor part <NUM> and the input mode may be compared with each other and the motor <NUM> may be rotated in a display retraction direction.

<FIG> and <FIG> show movement states of the first driving arm <NUM> and the second driving arm <NUM> for each exposure mode. A portion marked with a dotted line in the second mode to the fourth mode represents an initial state (first mode).

<FIG> is an exploded view of a component fixing part <NUM> of the display device <NUM>.

The component fixing part <NUM> is located inside a casing and includes a frame, a rod, etc. for fixing the aforementioned components to a specific location or maintaining a shape of a case. The component fixing part <NUM> may include an interval adjustment rod <NUM>, the side fixing frame <NUM>, the bottom fixing frame <NUM>, a first driver support frame <NUM>, a second driver support frame <NUM>, and a PCB support frame <NUM>. The component fixing part <NUM> may fix a cPCB and a main PCB to the frame.

The interval adjustment rod <NUM> is a rod arranged horizontally to the left and right inside the casing. The interval adjustment rod <NUM> may be plural, and may be provided at an appropriate position to fix shapes of the frames.

The side fixing frame <NUM> is a flat frame positioned adjacent to a left or right surface inside the casing, and the bottom fixing frame <NUM> is a flat frame positioned adjacent to a lower surface inside the casing.

The first driver support frame <NUM> and the second driver support frame <NUM> are frame components for supporting or fixing components corresponding to the display driver <NUM>.

The PCB support frame <NUM> is a frame component for fixing a PCB.

A material of the component fixing part <NUM> may include steel electrolytic cold commercial (SECC) or SUS.

<FIG> are diagrams for explaining a display device <NUM> according to another embodiment of the present invention.

<FIG> is a front perspective view of the display device <NUM>, and <FIG> is a rear perspective view of the display device <NUM> in a state in which an upper cover is removed. <FIG> is a rear perspective view of the inside of a casing of the display device <NUM>.

The display device <NUM> according to another embodiment of the present invention is different from the display device <NUM> in that the display device <NUM> further includes a rear cover part <NUM>. In describing the display device <NUM>, the same components as those of the aforementioned display device <NUM> will be described using the same reference numerals.

The rear cover part <NUM> may cover a rear surface of the display part <NUM> and the display driver <NUM> (a first driving arm or a second driving arm) exposed to the outside to protect the components and improve the appearance of the device.

<FIG> is an exploded view of the rear cover part <NUM> of the display device <NUM>.

The rear cover part <NUM> may include the rear protection cover <NUM>, an upper cover guide part <NUM>, and a lower cover guide part <NUM>.

The rear protection cover <NUM> is attachable to or detachable from a rear surface of the display part <NUM> and covers an exposed rear surface of the display part <NUM>.

The rear protection cover <NUM> may include a rear detachable cover <NUM>, a magnetism part <NUM>, a double-sided adhesive <NUM>, and a cover reinforcement sheet <NUM>.

The rear detachable cover <NUM> is a cover that protects a rear surface of the display part <NUM> or an exposed portion of the display driver <NUM>. The rear detachable cover <NUM> may include a plurality of covers that are long in a horizontal direction and short in a vertical direction. The plurality of covers may be attached to one surface of the cover reinforcement sheet <NUM> through the double-sided adhesive <NUM>. The double-sided adhesive <NUM> may include a double-sided tape such as a FOAM tape. Widths of the plurality of covers included in the rear detachable cover <NUM> may be less than or equal to the width of the display part <NUM>. The heights of the plurality of covers may be appropriately designed by one of ordinary skill in the art to a height for flexibly responding to bending.

The rear detachable cover <NUM> may further include the magnetism part <NUM> at both ends in a horizontal direction. The magnetism part <NUM> includes a magnet to attach to and detach from the display part <NUM>. The display cover <NUM> of the display part <NUM> may be provided with the magnetism part <NUM> at both left and right ends, and the magnetism part <NUM> of the display cover <NUM> and the magnetism part <NUM> of the rear detachable cover <NUM> may be attached to or detached from each other by magnets.

The display cover <NUM> of the display part <NUM> and the rear protection cover <NUM> may have a plurality of magnets arranged in a vertical direction (or a retraction or extension direction of the display part) at positions corresponding to each other. The rear protection cover <NUM> is separated from the display part <NUM> when the display part <NUM> is retracted into the casing, and magnetically attached to the exposed portion of the display part <NUM> when the display part <NUM> is extended out of the casing.

<FIG> shows a cross section of a connection portion of the rear protection cover <NUM> and the display part <NUM> in detail. As shown in <FIG>, the magnetism part <NUM> is provided at both left and right ends of the rear detachable cover <NUM>, and a position of the magnetism part <NUM> corresponds to the position of the magnetism part <NUM> provided in the display cover <NUM>.

The upper cover guide part <NUM> and the lower cover guide part <NUM> may guide the rear protection cover <NUM> separated from the display part <NUM>. The upper cover guide part <NUM> comes into contact with an outer surface of the rear protection cover <NUM> to guide the rear protection cover <NUM>, and the lower cover guide part <NUM> comes into contact with an inner surface of the rear protection cover <NUM> to guide the rear protection cover <NUM>. That is, movement of the separated rear protection cover <NUM> is guided along a space between the upper cover guide part <NUM> and the lower cover guide part <NUM>. The display device <NUM> may have an inner space for built therein the rear protection cover <NUM> at the top, and the rear protection cover <NUM> may be extended out of a casing or may be retracted into the casing. and the rear protection cover <NUM> may be extended out of the casing or retracted into the casing.

The upper cover guide part <NUM> and the lower cover guide part <NUM> may have a flat plate shape including a curved surface. The rear protection cover <NUM> may be guided along a curved surface between a lower surface of the upper cover guide part <NUM> and an upper surface of the lower cover guide part <NUM>.

In addition, the rear cover part <NUM> may further include a cover guide roller <NUM> fixed to the inside of the casing to guide the rear protection cover <NUM> and a bracket <NUM> supporting the cover guide roller <NUM>.

The casing of the rear cover part <NUM> may further include an upper cover <NUM> and a cover fixture <NUM> for fixing the upper cover <NUM>.

A material of the rear detachable cover <NUM> may include polycarbonate (PC) or aluminum. A material of the cover reinforcement sheet <NUM> may include polyethylene terephthalate (PET). Materials of the upper cover guide part <NUM>, the lower cover guide part <NUM>, and the upper cover <NUM> may include acrylonitrile butadiene styrene (ABS). A material of the cover guide roller <NUM> may include rubber, and a material of the bracket <NUM> may include steel electrolytic cold commercial (SECC).

The rear cover part <NUM> may have a structure to be disassembled or assembled in the display device <NUM>, and whether or not to apply the rear cover part <NUM> may be selected according to user preference or a vehicle environment.

According to the embodiments of the present invention, as a flexible display is retracted or extended into or out of the casing by winding the display, a volume of the device required for storing the display may be reduced. In addition, an exposure range of the display may be controlled by a sensor recognition method appropriately applied to the method of winding the display, and the effectiveness of the display device may be improved. By controlling the exposure range of the display, only an exposed area may be displayed, and power consumption due to use of the display may be reduced.

The display device according to the embodiments may be applied to various positions such as a center, a passenger display, a center console display, a rear seat entertainment display, a rear center display, or a rear control display of a vehicle.

It may be understood that the description of the various embodiments is not limited to the corresponding embodiment.

The detailed description of the exemplary embodiments is given to enable one of ordinary skill in the art to realize and implement the present invention. While the present invention has been described referring to the exemplary embodiments of the present invention, one of ordinary skill in the art will appreciate that many modifications and changes may be made within the scope of the present invention as defined by the appended claims. For example, the structures of the above-described embodiments may be used in combination.

Therefore, the present description intends not to limit the embodiments disclosed herein but to give a broadest range matching the principles and new features disclosed herein.

According to any one of the embodiments of the present invention, the usability of an inner space of a vehicle may be increased by reducing the size of an accommodation space for a display.

According to any one of the embodiments of the present invention, the usability of the display may be increased by adjusting a degree of exposure of the display, and power may be saved by using only the exposed portion of a display area.

In addition, according to any one of the embodiments of the present invention, a flexible display may be retracted or extended into or out of an accommodation space while being safely protected.

Claim 1:
A flexible display device (<NUM>) for a vehicle, comprising:
a casing having an opening;
a display part (<NUM>) configured to be retracted or extended into or out of the casing through the opening;
a display driver (<NUM>) configured to move the display part (<NUM>); and
a display winder (<NUM>) configured to wind the display part (<NUM>) based on movement of the display part (<NUM>),
wherein the display part (<NUM>) is configured to be extended based on a plurality of modes having different extension ranges,
wherein
the display winder (<NUM>) includes a rotary drum (<NUM>) having an outer circumferential surface on which the display part (<NUM>) is configured to be wound and a sensor recognizer (<NUM>) configured to detect a rotation state of the rotary drum (<NUM>),
wherein:
the display driver (<NUM>) includes a motor (<NUM>) connected to the casing; and
the display driver (<NUM>) is configured to move the display part (<NUM>) based on the rotation state of the rotary drum (<NUM>), detected by the sensor recognizer (<NUM>);
characterized in that
the display driver (<NUM>) further includes a driving arm (<NUM>, <NUM>) connecting the motor (<NUM>) and the display part (<NUM>).