Patent Description:
Generally, a display device using a flat display panel, such as a liquid crystal display device, an organic light emitting display device, an LED display device, an electrophoretic display device, or the like is mainly applied to a laptop, a portable electronic device, a television, a monitor, and the like.

A conventional flat display panel uses a glass substrate having no inflexibility, which limits application and use thereof. Thus, in recent years, a rollable display device that may be bent using a flexible substrate such as plastic and the like instead of the glass substrate having no flexibility is attracting attention as a new display.

Recently, a rollable display device in which a soft display panel is retracted and extended through an opening defined in a top of a housing has been released.

In a case of such rollable display device, the opening is generally defined wider than a passage area of the soft display panel to protect the soft display panel.

However, in the conventional rollable display device, when the soft display panel is retracted and extended, a gap is defined between the soft display panel and the housing, so that an internal structure of the device is exposed and foreign substances are easily flowed into the device. <CIT> relates to a rollable display device, and provides two brush members positioned adjacent to an opening area of the housing, wherein the two brush members are rotatable and have different tilting angles. <CIT> relates to a display device with a flexible display extendable and retractable from a housing, wherein guide bars are arranged on opposite sides of an entrance of the housing for the flexible display.

In addition, grease applied to a joint gear and the like of an actuator for ascending and descending of the soft display panel is easily transferred to other portions of the device, which makes maintenance cumbersome.

An object of the present disclosure aims to provide a rollable display device that may block external foreign substances by minimizing exposure of an interior of a housing when a soft display panel is retracted and extended.

This object is solved by the present invention as defined by the independent claim.

One aspect of the present disclosure proposes a rollable display device including a soft display panel, a main roller for winding or unwinding the soft display panel, an actuator coupled to the soft display panel to ascend and descend the soft display panel, a housing having the main roller mounted therein, wherein an opening extending in a first direction is defined in a top of the housing to retract and extend the soft display panel therethrough, and an elastic portion having one end coupled to a perimeter of the opening and protruding to cover at least a portion of the opening, wherein the elastic portion includes a rubber portion having a predetermined length along the first direction.

The elastic portion protrudes in a second direction perpendicular to the first direction.

The rubber portion includes a connecting portion coupled to the housing, and a wing portion flatly extending from the connecting portion to cover at least a portion of the opening.

A thickness of the wing portion increases as the wing portion becomes closer to the connecting portion.

In one implementation, the wing portion may include at least one cut defined therein extending from an end of the wing portion toward the connecting portion.

In one implementation, the connecting portion may include a hollow defined therein to pivotably connect the other end of the wing portion to the housing.

In one implementation, the actuator may include a link assembly retracted and extended through the opening in conjunction with the soft display panel, and a link actuator for actuating the link assembly to ascend and descend the soft display panel, wherein the link assembly may include an upper link frame having an upper end connected to an upper portion of the soft display panel, a lower link frame having a lower end connected to the link actuator, and a link joint for connecting a lower end of the upper link frame and an upper end of the lower link frame with each other, wherein the link joint forms a predetermined angle between the upper link frame and the lower link frame as the soft display panel ascends or descends.

In one implementation, the link joint may move along a pivot path having a predetermined pivot radius with respect to the lower end of the lower link frame, and wherein the rubber portion may be located on the pivot path of the link joint.

In one implementation, the elastic portion may further include a brush having one end coupled to the perimeter of the opening and having a plurality of bristles for covering at least a portion of the opening.

In one implementation, the link joint may include a first gear positioned on the lower end of the upper link frame, and a second gear positioned on the upper end of the lower link frame and rotating in engagement with the first gear, and wherein the length of the rubber portion in the first direction may be larger than a length of the link joint in the first direction.

The rollable display device of the present disclosure blocks the external foreign substances by minimizing the exposure of the interior of the housing when the soft display panel is retracted and extended.

The rollable display device of the present disclosure may prevent the brush from entering the actuating member ascending and descending the soft display panel.

A further scope of applicability of the present disclosure will become apparent from a detailed description below. It is to be understood that the specific embodiments, such as the detailed description and the preferred embodiments of the present disclosure, are given by way of example only.

Hereinafter, embodiments disclosed herein will be described in detail with reference to the accompanying drawings, and the same or similar components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or mixed in consideration of only ease of specification, and do not have distinct meanings or roles from each other. In addition, in describing the embodiments disclosed herein, when it is determined that a detailed description of a related known technology may obscure the subject matter of the embodiments disclosed herein, the detailed description thereof will be omitted. Further, the accompanying drawings are used to help easily understand the embodiments disclosed herein and it should be understood that technical ideas disclosed herein are not limited by the accompanying drawings, and all alterations, equivalents, and substitutes included in the technical scope of the present disclosure are included.

Although the terms including ordinal numbers, such as first, second, etc. may be used to describe various components, these components should not be limited by these terms. These terms are only used to distinguish one component from another.

It will be understood that when a component is referred to as being "connected with" another component, the component can be directly connected with the other component or intervening components may also be present. In contrast, it will be understood that when a component is referred to as being "directly connected with" another component, there are no intervening components present.

In the present application, terms such as "include", "has", and the like should be understood that they are intended to indicate an existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but do not preclude the presence or possibility of addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof in advance.

<FIG> illustrates a rollable display device associated with the present disclosure.

Referring to <FIG>, a rollable display device may include a main body <NUM>, a soft display panel <NUM>, and a link assembly <NUM>.

The main body <NUM> may provide a space defined therein in which the soft display panel <NUM> and the link assembly <NUM> may be accommodated. For example, the main body <NUM> may include a main roller <NUM> on which the soft display panel <NUM> is wound and a link actuator <NUM> for actuating the link assembly <NUM>. The main body <NUM> may further include a set power board box <NUM> for supplying a signal for realizing an image on the soft display panel <NUM>. The set power board box <NUM> may be located on a rear face of the main body <NUM>.

The main roller <NUM> may be cylindrical. The soft display panel <NUM> may be wound along an outer face of the main roller <NUM>. For example, a lower end of the soft display panel <NUM> may be coupled to the main roller <NUM>. The main roller <NUM> may prevent the soft display panel <NUM> from being damaged during an unwinding operation and/or a winding operation of the soft display panel <NUM>. For example, the main body <NUM> may further include an elastic member for rotating the main roller <NUM> in a state in which the soft display panel <NUM> is completely wound on the main roller <NUM>. The elastic member may include a spring.

The main body <NUM> may further include auxiliary rollers <NUM> and <NUM> to assist a movement of the soft display panel <NUM>. For example, a front face of the soft display panel <NUM> wound on the main roller <NUM> may be in contact with a front face auxiliary roller <NUM>, and a rear face of the soft display panel <NUM> may be in contact with a rear face auxiliary roller <NUM>. Vertical levels of the front face auxiliary roller <NUM> and the rear face auxiliary roller <NUM> may be different.

The link actuator <NUM> may pivot/move the link assembly <NUM> to ascend or descend an upper end of the soft display panel <NUM>. The soft display panel <NUM> wound on the main roller <NUM> may be fully unwound by the link actuator <NUM>. The soft display panel <NUM> which has been completely unwound may move toward the main roller <NUM> by the link actuator <NUM>. The soft display panel <NUM> moved toward the main roller <NUM> by the link actuator <NUM> may be wound along the outer face of the main roller <NUM> by a rotation of the main roller <NUM>.

The main body <NUM> may further include a control panel <NUM> for controlling the link actuator <NUM>. The control panel <NUM> may be located on a rear face of the main body <NUM>.

The soft display panel <NUM> may be a display panel that realizes the image and has flexibility. For example, the soft display panel <NUM> may include a first flexible substrate and a second flexible substrate bonded to the first flexible substrate. A light emitting element or light transmittance adjusting means may be positioned between the first flexible substrate and the second flexible substrate. For example, the soft display panel <NUM> may be an OLED panel including an organic light emitting layer.

The link assembly <NUM> may be connected to the link actuator <NUM>. The link assembly <NUM> may be pivoted/moved by the link actuator <NUM> to ascend or descend the upper end of the soft display panel <NUM>. For example, the link assembly <NUM> may connect the link actuator <NUM> and the upper end of the soft display panel <NUM> with each other.

The link assembly <NUM> may be located on the rear face of the soft display panel <NUM>. The rollable display device may further include a back cover <NUM> for hiding an operation of the link assembly <NUM>. The link assembly <NUM> may operate between the soft display panel <NUM> and the back cover <NUM>.

<FIG> illustrates a rear face and a first link assembly of a rollable display device associated with the present disclosure.

(a) in <FIG> illustrates a rear face of the rollable display device. Further, (b) in <FIG> illustrates a first link assembly 300R of the rollable display device when the soft display panel is fully unwound.

Referring to <FIG> and <FIG> in <FIG>, the link assembly <NUM> of the rollable display device may include the first link assembly 300R and a second link assembly <NUM>.

The first link assembly 300R and the second link assembly <NUM> may be respectively located close to side faces of the soft display panel <NUM> that face each other. For example, the first link assembly 300R may be located close to a left side face of the rear face of the soft display panel <NUM>, and the second link assembly <NUM> may be located closer to a right side face of the rear face of the soft display panel <NUM> based on the drawing shown in (a) in <FIG>.

When the soft display panel <NUM> is fully unwound, the link assembly <NUM> may have an I shape. For example, when the soft display panel <NUM> is fully unwound, the link assembly <NUM> may completely fill a space between the soft display panel <NUM> and the back cover <NUM>. When the soft display panel <NUM> is fully unwound, an empty space may be defined between the soft display panel <NUM>, the link assembly <NUM>, and the back cover <NUM>.

The rollable display device includes the link assembly <NUM> having the I shape when the soft display panel <NUM> is fully unwound. Accordingly, the rollable display device according to an embodiment of the present disclosure may not require a separate finishing action on the side face. Thus, in the rollable display device according to an embodiment of the present disclosure, the side face may be slimmed.

The first link assembly 300R may include an upper link frame <NUM>, a lower link frame <NUM>, a center link joint <NUM>, and an elastic plate <NUM>. The second link assembly <NUM> may have the same configuration as the first link assembly 300R. For example, the second link assembly <NUM> may be symmetrical with the first link assembly 300R.

The rollable display device will be described as the first link assembly 300R and the second link assembly <NUM> being symmetrical. However, in the rollable display device, the second link assembly <NUM> may have the same shape as the first link assembly 300R. For example, in the rollable display device, the first link assembly 300R and the second link assembly <NUM> may pivot in the same direction by a link actuator <NUM>.

The lower link frame <NUM> may connect the link actuator <NUM> and the center link joint <NUM> with each other. For example, the lower link frame <NUM> may include a lower end link bracket <NUM> for connecting with the link actuator <NUM>.

The lower link frame <NUM> may be pivoted by the link actuator <NUM>. The link actuator <NUM> may pivot the lower link frame <NUM> on the rear face of the soft display panel <NUM> via the lower end link bracket <NUM>. For example, when the fully unwound soft display panel <NUM> is wound, an upper end of the lower link frame <NUM> may move toward a center of the soft display panel <NUM> by the link actuator <NUM>.

The upper link frame <NUM> may connect the upper end of the soft display panel <NUM> and the center link joint <NUM> with each other. For example, the upper link frame <NUM> may include an upper end link bracket <NUM> for connecting with the upper end of the soft display panel <NUM>.

<FIG> is a diagram illustrating a connection relationship between the upper end of the soft display panel <NUM> and the upper link frame <NUM> of the rollable display device.

(a) in <FIG> is a cross-sectional view of the upper end of the soft display panel. Further, (b) in <FIG> illustrates a rear face of the upper end of the soft display panel.

Referring to (a) and (b) in <FIG>, and <FIG> in <FIG>, the rollable display device according to an embodiment of the present disclosure may include a top support <NUM> located at an upper end of the rear face of the soft display panel <NUM> and a support bracket <NUM> positioned between the top support <NUM> and the upper link frame <NUM>.

The support bracket <NUM> may be fixed to the top support <NUM> by a support fixing pin 410c. The back cover <NUM> may cover the support bracket <NUM>. For example, an upper end of the back cover <NUM> may be coupled to the top support <NUM> by a cover fixing pin 600c.

The back cover <NUM> may ascend or descend together with the soft display panel <NUM>. The back cover <NUM> may be accommodated in the main body <NUM>. For example, the main body <NUM> may further include a cover roller <NUM> on which the back cover <NUM> is wound and the elastic member for rotating the cover roller <NUM>.

The upper end of the soft display panel <NUM> may ascend or descend together with the top support <NUM>. For example, the soft display panel <NUM> may be mounted to the top support <NUM> using a connection member <NUM>, such as a flexible printed circuit board (FPCE), a tape carrier package (TCP), or the like connected to a circuit board <NUM> for transmitting a driving signal and a power signal to a display region. The rollable display device according to an embodiment of the present disclosure may further include a top cap <NUM> for covering the connection member <NUM> and the top support <NUM>.

The rollable display device is described as the back cover <NUM> is fixed to the support bracket <NUM>. However, in the rollable display device according to another embodiment of the present disclosure, the back cover <NUM> may be fixed to the top support <NUM> or the top cap <NUM>.

The upper end link bracket <NUM> of the upper link frame <NUM> may be coupled to the support bracket <NUM> by an upper end fixing pin 310c. A lower end of the upper link frame <NUM> may pivot in a direction of the center of the soft display panel <NUM> with respect to the upper end fixing pin 310c.

A connection or coupling relationship between the upper end of the soft display panel <NUM> of the rollable display device and the upper link frame <NUM> is not limited to the above embodiment. For example, the upper end of the soft display panel may be coupled with a cover member formed integrally to be connected to a member for ascending and descending the soft display panel, such as the upper link frame.

Hereinafter, embodiments of the present disclosure will be described using a rollable display device illustrated in <FIG> as an example. However, in one example, the rollable display device according to an embodiment of the present disclosure may be implemented as the rollable display device illustrated in <FIG>. Hereinafter, various embodiments of the present disclosure will be described in detail with reference to <FIG>, and may be supplementally interpreted with reference to <FIG> above.

<FIG> is a view illustrating a rollable display device according to an embodiment of the present disclosure viewed from above.

(a) in <FIG> illustrates a rollable display device having a brush <NUM> according to an embodiment of the present disclosure. (b) in <FIG> illustrates a rollable display device having the brush <NUM> and a rubber portion <NUM> according to an embodiment of the present disclosure. In (a) and (b) in <FIG>, the soft display panel <NUM>, the main roller <NUM>, and the actuator <NUM> are accommodated in the housing <NUM> and not visible.

Referring to <FIG>, the rollable display device according to the present disclosure includes the soft display panel <NUM>, the main roller <NUM>, the actuator <NUM>, the housing <NUM>, and an elastic portion <NUM>.

The soft display panel <NUM> may be the display panel that realizes the image and has the flexibility. For example, the soft display panel <NUM> may be a flexible organic light emitting display panel, a flexible light emitting diode display panel, a flexible electrophoretic display panel, or the like. The soft display panel <NUM> may ascend and descend in a vertical direction by being wound onto or unwound from the main roller <NUM>.

The main roller <NUM> winds or unwinds the soft display panel <NUM>.

The actuator <NUM> is coupled with the soft display panel <NUM> to ascend and descend the soft display panel <NUM>. For example, one end of the actuator <NUM> is connected to the upper end of the soft display panel <NUM> and the other end of the actuator <NUM> is fixed to the housing <NUM>, so that the soft display panel <NUM> may be ascended and descended through an opening 100a of the housing <NUM> to be described later. The actuator <NUM> may be retracted and extended through the opening 100a in conjunction with the soft display panel <NUM>. The actuator <NUM> may include the link actuator <NUM> and the link assembly <NUM> of <FIG>. A structure for ascending and descending the soft display panel <NUM> may be variously implemented, and is not limited to the embodiment of <FIG>.

The housing <NUM> mounts the main roller <NUM> therein. The housing <NUM> may provide the space in which the soft display panel <NUM> and the link assembly <NUM> may be accommodated. A top of the housing <NUM> may have the opening 100a defined therein for retracting and extending the soft display panel <NUM>. The housing <NUM> may be implemented as the main body of <FIG>, but is not limited to the embodiment of <FIG>.

Referring to <FIG>, and <FIG> in <FIG>, the opening 100a may be elongated in a first direction corresponding to a width of the soft display panel <NUM> in the top of the housing <NUM>. The soft display panel <NUM> or the actuator <NUM> may be retracted or extended through the opening 100a as the soft display panel <NUM> ascends and descends. The elastic portion <NUM> that covers at least a portion of the opening 100a is disposed along a perimeter of the opening 100a.

Referring to FIGS. (a) and (b) in <FIG>, the elastic portion <NUM> is protruded such that one end of the elastic portion <NUM> is coupled to the perimeter of the opening 100a and covers at least the portion of the opening 100a. In this connection, the elastic portion <NUM> protrudes in a second direction perpendicular to the first direction. The elastic portion <NUM> covers the gap between the soft display panel <NUM> and the housing <NUM> when the soft display panel <NUM> is retracted and extended. The elastic portion <NUM> may be made of an elastically deformable material to allow the soft display panel <NUM> or the actuator <NUM> to pass through the opening 100a. The elastic portion <NUM> may be disposed on both sides of the opening 100a along the first direction to have a predetermined length, and may define a gap through which the soft display panel <NUM> passes in a center of the opening 100a. The elastic portion <NUM> may include the brush <NUM> and the rubber portion <NUM>.

For convenience of description, a downward direction in (a) and (b) in <FIG> is referred to as a direction of a front face of the soft display panel <NUM> and an upward direction is referred to as a direction of a rear face of the soft display panel <NUM>.

Referring to (a) in <FIG>, the brush <NUM> may be formed such that a plurality of bristles are directed inward of the opening 100a. When the soft display panel <NUM> is retracted and extended through the opening 100a, the brush <NUM> may include a first brush <NUM> covering a gap between the front face of the soft display panel <NUM> and the housing <NUM>, and a second brush <NUM> covering a gap between the rear face of the soft display panel <NUM> and the housing <NUM>. In this connection, when the actuator <NUM> is disposed in the direction of the rear face of the soft display panel <NUM>, as the gap between the rear face of the soft display panel <NUM> and the housing <NUM> increases, the second brush <NUM> may be formed longer than the first brush <NUM>.

Referring to (b) in <FIG>, the rubber portion <NUM> is made of a flat, thin, and plate-shaped member, and one end of the rubber portion <NUM> is coupled to the perimeter of the opening 100a. The rubber portion <NUM> may have a predetermined length along the first direction to cover at least a portion of the opening 100a.

Referring to (a) and (b) in <FIG>, the rollable display device may include only the rubber portion <NUM> along the perimeter of the opening 100a. Alternatively, the rollable display device may include the brush <NUM> along a portion of the perimeter of the opening 100a and the rubber portion <NUM> along a remaining portion of the perimeter of the opening 100a. As will be described later, the rubber portion <NUM> may be disposed at a position corresponding to the actuator <NUM>. For example, the actuator <NUM> may be disposed in the direction of the rear face of the soft display panel <NUM>, and the rubber portion <NUM> may be disposed between bristles of the second brush <NUM>. The rubber portion <NUM> may be made of an elastically deformable silicone material or a silicone coated material.

<FIG> illustrates the rubber portion <NUM> of the rollable display device according to an embodiment of the present disclosure.

Referring to <FIG>, the rubber portion <NUM> includes a connecting portion <NUM> and a wing portion <NUM>.

The connecting portion <NUM> couples the wing portion <NUM> to the housing <NUM>. The connecting portion <NUM> includes a hollow 521a defined therein and pivotably connects the wing portion <NUM> to the housing <NUM> to minimize a passage resistance of the soft display panel <NUM> or the actuator <NUM>.

The wing portion <NUM> extends flatly from the connecting portion <NUM> to cover at least a portion of the opening 100a. For example, the wing portion <NUM> may be composed of a thin, flat, and plate-shaped member. A thickness of the wing portion <NUM> increases as the wing portion <NUM> becomes closer to the connecting portion <NUM>. The wing portion <NUM> may include a cut 522a and a hole 522b defined therein.

The cut 522a cuts the wing portion <NUM> at predetermined spacings in an end direction from an arbitrary point inward side the wing portion <NUM> spaced a predetermined distance from an end of the wing portion <NUM>, thereby minimizing the passage resistance of the soft display panel <NUM> or the actuator <NUM>.

The hole 522b is defined at one end of the cut 522a located at the inward side of the wing portion <NUM> to prevent further tearing of the cut 522a because of continuous deformation.

<FIG> is an enlarged view of one side of a top of the housing <NUM> of the rollable display device according to an embodiment of the present disclosure.

Referring to <FIG> and <FIG>, the actuator <NUM> may further include the link assembly <NUM> and the link actuator <NUM>.

The link assembly <NUM> pivots and moves by the link actuator <NUM> to ascend or descend the soft display panel <NUM>. For example, one end of the link assembly <NUM> may be connected to the upper end of the soft display panel <NUM> and the other end of the link assembly <NUM> may be connected to the link actuator <NUM>. The link assembly <NUM> may be disposed on the rear face of the soft display panel <NUM>. The link assembly <NUM> may be mounted in the housing <NUM> to be retracted and extended through the opening 100a in conjunction with the soft display panel <NUM>.

The link actuator <NUM> may pivot/move the link assembly <NUM> to ascend or descend the upper end of the soft display panel <NUM>.

Referring to <FIG> and <FIG>, the link assembly <NUM> may be folded or unfolded based on the ascending and descending of the soft display panel <NUM>. For example, when the link soft display panel <NUM> is completely unfolded, the link assembly <NUM> is in the I shape. In addition, when the soft display panel <NUM> is folded or being retracted or extended, the link assembly <NUM> is in an L shape. The link assembly <NUM> has a predetermined actuating path based on the ascending and descending of the soft display panel <NUM>.

The link assembly <NUM> may include the upper link frame <NUM>, the lower link frame <NUM>, and the center link joint <NUM>.

The upper link frame <NUM> has an upper end pivotably connected to an upper portion of the soft display panel <NUM>.

The lower link frame <NUM> has a lower end pivotably connected to the link actuator <NUM>. Specifically, the lower link frame <NUM> may be pivoted in the first direction by the link actuator <NUM> with respect to the lower end.

The link joint <NUM> connects a lower end of the upper link frame <NUM> and an upper end of the lower link frame <NUM> with each other. The link joint <NUM> forms a predetermined angle between the upper link frame <NUM> and the lower link frame <NUM> based on the ascending and descending of the soft display panel <NUM>. The link joint <NUM> may include a first gear 330a positioned on the lower end of the upper link frame <NUM>, and a second gear 330b positioned on the upper end of the lower link frame <NUM> and rotating in engagement with the first gear 330a.

The link joint <NUM> moves along a pivot path P having a predetermined pivot radius R with respect to the lower end of the lower link frame <NUM>. Specifically, the upper link frame <NUM> and the lower link frame <NUM> pivot as the soft display panel <NUM> ascends or descends. For example, when the soft display panel <NUM> ascends, the lower link frame <NUM> may pivot in the first direction and the upper link frame <NUM> may pivot in the opposite direction of the first direction. In this connection, the link joint <NUM> pivots in the first direction with respect to the lower end of the lower link frame <NUM> and moves in a direction of an edge of the soft display panel <NUM>. In another example, when the soft display panel <NUM> descends, the lower link frame <NUM> may pivot in the direction opposite to the first direction, and the upper link frame <NUM> may pivot in the first direction. In this connection, the link joint <NUM> pivots in the opposite direction of the first direction with respect to the lower end of the lower link frame <NUM> and moves to a direction of the center of the soft display panel <NUM>.

Referring to <FIG>, as described above, the rollable display device may include the brush <NUM> along the portion of the perimeter of the opening 100a and the rubber portion <NUM> along the remaining portion of the perimeter of the opening 100a. In this connection, the rubber portion <NUM> may be disposed at a position corresponding to the pivot path of the link joint <NUM>. Alternatively, the rubber portion <NUM> may be disposed to cover a specific region of the opening 100a through which the link joint <NUM> passes. In this connection, the rubber portion <NUM> may have the predetermined length such that an end of the bristle of the adjacent brush <NUM> does not in contact with the link joint <NUM>. For example, the length of the rubber portion <NUM> in the first direction may be larger than a length of the link joint <NUM> in the first direction. This is to prevent malfunction of the actuator <NUM> and transfer of lubricant such as the grease by preventing the end of the bristle of the brush <NUM> disposed adjacent to the specific region from entering between the first gear 330a and the second gear 330b of the link joint <NUM>.

According to an embodiment of the present disclosure, the rollable display device of the present disclosure may block external foreign substances by minimizing exposure of the interior of the housing when the soft display panel is retracted and extended.

According to another embodiment of the present disclosure, the rollable display device of the present disclosure may prevent the brush from entering the actuating member ascending and descending the soft display panel.

It is apparent to those skilled in the art that the present disclosure may be embodied in other specific forms.

Claim 1:
A rollable display device comprising:
a soft display panel (<NUM>);
a main roller (<NUM>) for winding or unwinding the soft display panel (<NUM>);
an actuator (<NUM>) coupled to the soft display panel (<NUM>) to raise or lower the soft display panel (<NUM>);
a housing (<NUM>) in which the main roller (<NUM>) is mounted, wherein an opening (100a) extending in a first direction is defined at a top of the housing (<NUM>) to allow the soft display panel (<NUM>) to retract or extend therethrough; and
an elastic portion (<NUM>) having one end coupled to a perimeter of the opening (100a) and protruding in a second direction perpendicular to the first direction to cover at least a portion of the opening,
wherein the elastic portion (<NUM>) includes a rubber portion (<NUM>) having a predetermined length along the first direction,
wherein the rubber portion (<NUM>) includes:
a connecting portion (<NUM>) coupled to the housing (<NUM>); and
a wing portion (<NUM>) flatly extending from the connecting portion to cover the at least a portion of the opening, characterised in that:
a thickness of the wing portion (<NUM>) increases along a direction leading towards the connecting portion.