KR20200079855A - Display device - Google Patents

Abstract

According to one embodiment of the present invention, provided is a display device which can prevent a display panel from being damaged. The display device comprises: a display panel in which a plurality of pixels are defined and which includes a display region and a non-display region; a back cover disposed on a rear surface of the display panel; a roller fixed to the back cover; and a fixing member fixed to the back cover and covering an upper surface of the display panel in the non-display region.

Description

Display device {DISPLAY DEVICE}

The present invention relates to a display device, and more particularly, to a rollable display device capable of improving peeling of a display panel from a back cover.

Display devices used in computer monitors, TVs, and cell phones include organic light emitting displays (OLEDs) that emit light by themselves, and liquid crystal displays (LCDs) that require a separate light source. have.

2. Description of the Related Art A display device has a wide range of applications, not only a computer monitor and a TV, but also a personal portable device, and research has been conducted on a display device having a large display area and a reduced volume and weight.

In addition, recently, a rollable display device in which a display unit, a wiring, or the like is formed on a flexible substrate, such as plastic, which is a flexible material, so that an image can be displayed even when it is rolled is attracting attention as a next-generation display device.

The problem to be solved by the present invention is to provide a display device capable of improving the peeling of the display panel and the flexible film during winding of the display device.

Another problem to be solved by the present invention is to provide a display device capable of reducing damage to a display panel when winding the display device.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the problems as described above, a display device according to an exemplary embodiment of the present invention includes a plurality of pixels defined, a display panel including a display area and a non-display area, and a back cover disposed on a rear surface of the display panel. It may include a roller fixed to the cover, and a fixing member fixed to the back cover and covering the top surface of the display panel in the non-display area.

In order to solve the problems as described above, the display device according to another exemplary embodiment of the present invention includes a display panel for displaying an image, a back cover attached to a rear surface of the display panel, and a plurality of flexible films electrically connected to the display panel , A fixing member for fixing the display panel to the back cover on the display panel, and a roller configured to wind or unwind the display panel and the back cover.

Specific details of other embodiments are included in the detailed description and drawings.

According to the present invention, a fixing member for fixing the display panel to the back cover is disposed to minimize peeling of the display panel from the back cover when winding the display device.

In the present invention, when the display device is wound, the display panel may be peeled from the back cover to minimize driving failure of the display panel.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present invention.

1A and 1B are perspective views of a display device according to an exemplary embodiment of the present invention.
2 is an exploded perspective view of a display device according to an exemplary embodiment of the present invention.
3 is a schematic cross-sectional view illustrating a headbar and a display unit of a display device according to an exemplary embodiment of the present invention.
4 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention.
5 is a plan view of a display device according to an exemplary embodiment of the present invention.
6 is a cross-sectional view taken along line VI-VI' of FIG. 5.
7 is a plan view of a back cover of a display device according to an exemplary embodiment of the present invention.
8 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention.
9 is a plan view of a display device according to an exemplary embodiment of the present invention.
10A is a cross-sectional view taken along line Xa-Xa' of FIG. 9.
10B is a cross-sectional view taken along line Xb-Xb' of FIG. 9.
11 is a plan view of a display device according to an exemplary embodiment of the present invention.
12 is a cross-sectional view taken along line XII-XII' of FIG. 11 according to another embodiment of the present invention.
13 is a plan view of a display device according to an exemplary embodiment of the present invention.
14 is a cross-sectional view taken along line XIV-XIV' of FIG. 13.
15 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various shapes different from each other, and only the present embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform the person having the scope of the invention, and the present invention is only defined by the scope of the claims.

The shapes, areas, ratios, angles, numbers, etc. disclosed in the drawings for describing the embodiments of the present invention are exemplary, and the present invention is not limited to the illustrated matters. The same reference numerals refer to the same components throughout the specification. In addition, in the description of the present invention, when it is determined that detailed descriptions of related known technologies may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted. When'include','have','consist of', etc. mentioned in the present invention are used, other parts may be added unless'~man' is used. When a component is expressed as a singular number, the plural number is included unless otherwise specified.

In interpreting the components, it is interpreted as including the error range even if there is no explicit description.

In the case of the description of the positional relationship, for example, when the positional relationship of two parts is described as'~top','~upper','~bottom','~side', etc.,'right' Alternatively, one or more other parts may be located between the two parts unless'direct' is used.

An element or layer being referred to as being "on" another element or layer includes all instances of other layers or other elements immediately above or in between.

Also, the first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are only used to distinguish one component from another component. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

The same reference numerals refer to the same components throughout the specification.

The area and thickness of each configuration shown in the drawings are shown for convenience of description, and the present invention is not necessarily limited to the area and thickness of the configuration.

Each of the features of the various embodiments of the present invention may be partially or wholly combined or combined with each other, technically various interlocking and driving may be possible, and each of the embodiments may be independently implemented with respect to each other or may be implemented together in an associative relationship. It might be.

Hereinafter, the present invention will be described with reference to the drawings.

<Display device-Rollable display device>

First, the rollable display device may be referred to as a display device capable of displaying an image even if it is rolled. The rollable display device may have high flexibility compared to a conventional general display device. Depending on the use of the rollable display device, the shape of the rollable display device can be freely changed. Specifically, when the rollable display device is not used, the rollable display device can be rolled to reduce the volume and stored. Conversely, when the rollable display device is used, the rollable display device that is rolled and rolled can be used again.

1A and 1B are perspective views of a display device according to an exemplary embodiment of the present invention. 1A and 1B, the display device 100 according to an exemplary embodiment of the present invention includes a display unit DP and a housing unit HP.

The display unit DP is a configuration for displaying an image to a user, and for example, a display element and a circuit, a wiring, and a component for driving the display element may be arranged. In this case, since the display device 100 according to an embodiment of the present invention is a rollable display device 100, the display unit DP may be configured to allow winding and unwinding. For example, the display unit DP may be formed of a display panel and a back cover having flexibility to enable winding or unwinding. A more detailed description of the display unit DP will be described later with reference to FIGS. 5 to 7.

The housing part HP is a case in which the display part DP can be stored. The display unit DP may be wound and accommodated inside the housing unit HP, and the display unit DP may be unwinded and disposed outside the housing unit HP.

The housing part HP is provided with an opening HPO so that the display part DP can move inside and outside the housing part HP. The display part DP may move in the vertical direction through the opening HPO of the housing part HP.

Meanwhile, the display unit DP of the display device 100 may be switched from a full unwinding state to a full winding state, or a full winding state from a full winding state.

In FIG. 1A, the display unit DP of the display device 100 is fully unwinded, and the full unwinded state is a state in which the display unit DP of the display device 100 is disposed outside the housing HP to be. That is, in order for a user to view an image through the display device 100, the display unit DP is unwinded and disposed as much as possible outside the housing unit HP, and a full unwinded state in which it is no longer possible to unwind Can be defined as

1B illustrates a state in which the display unit DP of the display device 100 is fully wound, and in the full-winded state, the display unit DP of the display device 100 is stored inside the housing part HP, and is no longer It cannot be wound. That is, when the user does not watch the image through the display device 100, since it is advantageous in terms of appearance that the display unit DP is not disposed outside the housing unit HP, the display unit DP is wound and the housing unit ( HP) The state stored therein can be defined as a full-wound state. In addition, when the display unit DP is in a fully wound state accommodated inside the housing unit HP, the volume of the display device 100 may be reduced and transport may be facilitated.

Meanwhile, a driving unit for winding or unwinding the display unit DP is disposed to switch the display unit DP to a full unwinding state or a full-winding state.

<Driver>

2 is an exploded perspective view of a display device according to an exemplary embodiment of the present invention. 3 is a schematic cross-sectional view illustrating a headbar and a display unit of a display device according to an exemplary embodiment of the present invention. 4 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention. 4 is a schematic cross-sectional view illustrating a roller 151 and a display unit DP of the display device 100 according to an exemplary embodiment of the present invention. For convenience of description, only the head bar 164 and the display portion DP are illustrated in FIG. 3, and only the housing portion HP, the roller 151 and the display portion DP are illustrated in FIG. 4.

First, referring to FIG. 2, the driving unit MP includes a roller unit 150 and a lifting unit 160.

The roller unit 150 rotates in the first direction DR1 or the second direction DR2 and winds or unwinds the display unit DP fixed to the roller unit 150. The roller part 150 includes a roller 151, a roller support part 152, and a roller rotating part 153.

The roller 151 is a member to which the display unit DP is wound. The roller 151 may be formed in a cylindrical shape, for example. The lower edge of the display unit DP may be fixed to the roller 151. When the roller 151 rotates, a display unit DP having a lower edge fixed to the roller 151 may be wound on the roller 151. On the other hand, when the roller 151 rotates in the opposite direction, the display unit DP wound on the roller 151 may be unwinded from the roller 151. The roller 151 may be made of a metal material or a plastic material having rigidity.

The roller support part 152 supports the rollers 151 on both sides of the rollers 151. Specifically, the roller support portion 152 is disposed on the bottom surface HPF of the housing portion HP. And the upper side of the roller support 152 is coupled to both ends of the roller 151. Accordingly, the roller support part 152 may support the roller 151 to be spaced from the bottom surface HPF of the housing part HP. At this time, the roller 151 may be coupled to the roller support 152 so as to be rotatable.

The roller rotating part 153 may rotate the roller 151 in the first direction DR1 or the second direction DR2. A roller rotation part 153 may be disposed on each pair of roller supports 152. For example, the roller rotating unit 153 may be a rotating motor that transmits rotational force to the roller 151, but is not limited thereto.

The lifting unit 160 moves the display unit DP in the vertical direction in accordance with the driving of the roller unit 150. The lifting unit 160 includes a link support unit 161, a link unit 162, a link lifting unit 163, and a head bar 164.

The link support unit 161 supports the link unit 162 and the link lifting unit 163. Specifically, the link support unit 161 may support the link unit 162 moving in the vertical direction and the display unit DP so as not to collide with the boundary of the opening HPO of the housing unit HP. The link support unit 161 may support the link unit 162 and the display unit DP so that they can only move in the vertical direction without moving in the front-rear direction.

The link portion 162 includes a plurality of links 162L hinged to each other. Each of the plurality of links 162L is hinged to be rotatable with each other and can be moved in the vertical direction by the link elevation 163. When the link portion 162 moves in the up-down direction, each of the plurality of links 162L may rotate in a direction away from or close to each other. A detailed description thereof will be described later with reference to FIG. 4.

The link lifter 163 may move the linker 162 in the vertical direction. The link lifting unit 163 may rotate each of the plurality of links 162L of the link unit 162 to be close to each other, or may rotate each of the plurality of links 162L to be distant from each other. The link lifting unit 163 may raise or lower the link unit 162 so that the display unit DP connected to the link unit 162 is raised or lowered.

At this time, the link lifting unit 163 is synchronized with the roller rotating unit 153 and the driving unit, so that the roller unit 150 and the lifting unit 160 may operate simultaneously. For example, when the display unit DP is switched from a full unwinding state to a full-winding state, the roller unit 150 operates such that the display unit DP is wound on the roller 151, and at the same time, the lifting unit 160 ) May rotate the plurality of links 162L of the link unit 162 to cause the display unit DP to descend. In addition, when the display unit DP is switched from the fully wound state to the fully unwinded state, the roller unit 150 operates to unwind the display unit DP from the roller 151, and at the same time lift unit 160 The rotation of the plurality of links 162L of the link unit 162 may cause the display unit DP to rise.

The head bar 164 of the lifting unit 160 is fixed to the top end of the display unit DP. The head bar 164 is connected to the link unit 162 and may move the display unit DP in the vertical direction according to the rotation of the plurality of links 162L of the link unit 162. That is, the display unit DP may be moved in the vertical direction by the link unit 162 and the link elevation unit 163 by the head bar 164.

Referring to FIG. 3 together, the head bar 164 is disposed at the top end of the display unit DP to surround the front and rear surfaces of the display unit DP.

The head bar 164 includes a first head bar 164a and a second head bar 164b. The first head bar 164a covers the front surface of the display unit DP. The first head bar 164a covers only a portion of the front side adjacent to the uppermost edge of the display portion DP so as not to cover the image displayed on the front side of the display portion DP.

The second head bar 164b covers the rear surface of the display unit DP. The second head bar 164b covers a portion of the rear surface adjacent to the uppermost edge of the display unit DP. However, since an image is not displayed on the rear surface of the display unit DP, the second head bar 164b may overlap the display unit DP more than the first head bar 164a.

In order to fasten the display unit DP to the first head bar 164a and the second head bar 164b, a first fastening hole AH1 may be formed in the display unit DP. Further, the screw SC may penetrate the first fastening hole AH1 to fasten the first head bar 164a, the display unit DP, and the second head bar 164b.

The second head bar 164b is provided with a femme nut PN to which the link portion 162 of the elevation 160 is fastened. The second head bar 164b and the link portion 162 of the elevating portion 160 may be fastened by the femme nut PN. Therefore, when the link portion 162 of the lifting unit 160 moves in the vertical direction, the second head bar 164b fastened to the link portion 162 and the first head fastened to the second head bar 164b. The bar 164a and the display unit DP may move together in the vertical direction.

Meanwhile, in FIG. 3, the first headbar 164a and the second headbar 164b are shown as having a straight shape, but the shapes of the first headbar 164a and the second headbar 164b may be variously changed. And may not be limited thereto.

Hereinafter, a driving operation of the driving unit MP will be described in detail with reference to FIG. 4 together.

4 together, the lower edge of the display unit DP is connected to the roller 151. And when the roller 151 is rotated in the first direction DR1 by the roller rotating unit 153, that is, clockwise, the display unit DP is a roller such that the rear surface of the display unit DP is in close contact with the surface of the roller 151. It can be wound at 151.

Conversely, when the roller 151 rotates in the second direction DR2 by the roller rotating unit 153, that is, counterclockwise, the display unit DP wound on the roller 151 is unwinded from the roller 151. It may be disposed outside the housing portion HP.

In some embodiments, a driving unit MP having a structure other than the driving unit MP described above may be applied to the display device 100. That is, if it is possible to wind and unwind the display unit DP, the above-described configuration of the roller unit 150 and the lifting unit 160 may be changed, some components may be omitted, or other components may be added. have.

<display part>

5 is a plan view of a display device according to an exemplary embodiment of the present invention. 6 is a cross-sectional view taken along line VI-VI' in FIG. 5. In FIG. 5, illustration of the roller unit 150 and the elevator unit 160 is omitted for convenience of description. In addition, in FIGS. 5 and 6, for convenience of description, the display unit DP may be defined to include a back cover 110, a display panel 120, a flexible film 130, and a printed circuit board 140. .

Referring to FIG. 5, the display device 100 includes a back cover 110, a display panel 120, a flexible film 130 printed circuit board 140, and a fixing member 170.

The display panel 120 is a panel for displaying an image to a user. The display panel 120 may include a display element for displaying an image, a driving element for driving the display element, and wires for transmitting various signals to the display element and the driving element. The display device may be defined differently according to the type of the display panel 120. For example, when the display panel 120 is an organic light emitting display panel, the display device may include an organic light emitting device including an anode, an organic light emitting layer, and a cathode. It can be a device. For example, when the display panel 120 is a liquid crystal display panel, the display element may be a liquid crystal display element. Hereinafter, it is assumed that the display panel 120 is an organic light emitting display panel, but the display panel 120 is not limited to the organic light emitting display panel. In addition, since the display device 100 according to an embodiment of the present invention is a rollable display device, the display panel 120 may be implemented as a flexible display panel to be wound or unwinded on the roller 171.

The display panel 120 includes a display area AA and a non-display area NA.

The display area AA is an area in which an image is displayed on the display panel 120. A plurality of sub-pixels constituting a plurality of pixels and circuits for driving the plurality of sub-pixels may be disposed in the display area AA. The plurality of sub-pixels are the smallest units constituting the display area AA, and a display element may be disposed in each of the plurality of sub-pixels, and the plurality of sub-pixels may form a pixel. For example, an organic light emitting device including an anode, an organic emission layer, and a cathode may be disposed in each of the plurality of sub-pixels, but is not limited thereto. Also, a circuit for driving a plurality of sub-pixels may include a driving element and wiring. For example, the circuit may be formed of a thin film transistor, a storage capacitor, a gate wiring, or a data wiring, but is not limited thereto.

The non-display area NA is an area in which an image is not displayed. Various wirings, circuits, and the like for driving the organic light emitting element of the display area AA are disposed in the non-display area NA. For example, a link wiring or a driver IC such as a gate driver IC or a data driver IC for transmitting signals to a plurality of sub-pixels and circuits of the display area AA may be disposed in the non-display area NA. It is not limited to this.

Meanwhile, referring to FIG. 5, the display panel 120 may include a bonding area BA extending from one side of the display area AA. The bonding area BA is an area disposed on one side of the display area AA of the non-display area NA disposed outside the display area AA of the display panel 120, and the flexible film 130 is bonded It can be defined as an area. The bonding area BA may include various pads for bonding the flexible film 130 and wiring for connecting various pads and various components disposed in the display area AA, but is not limited thereto.

The flexible film 130 is a film in which various parts are disposed on a ductile base film. Specifically, the flexible film 130 is a film for supplying signals to a plurality of sub-pixels and circuits in the display area AA, and may be electrically connected to the display panel 120. The flexible film 130 is disposed at one end of the non-display area NA of the display panel 120 to supply power voltage, data voltage, and the like to a plurality of sub-pixels and circuits of the display area AA. For example, the flexible film 130 may be disposed in the bonding area BA among the non-display areas NA to be bonded to the bonding area BA. Although the flexible film 130 is illustrated in FIG. 5 as four pieces, the number of the flexible films 130 may be variously changed according to design, but is not limited thereto.

Meanwhile, a driving IC such as a gate driver IC and a data driver IC may be disposed on the flexible film 130. The driving IC is a component that processes data for displaying an image and a driving signal for processing the data. The driving IC may be disposed in a chip on glass (COG), chip on film (COF), tape carrier package (TCP) method, or the like, according to the mounting method. However, for convenience of description, the driving IC is described as a chip-on-film method mounted on the flexible film 130, but is not limited thereto.

The printed circuit board 140 is disposed on one end of the flexible film 130 and is connected to the flexible film 130. The printed circuit board 140 is a component that supplies a signal to the driving IC. The printed circuit board 140 supplies various signals, such as driving signals and data signals, to the driving IC. For example, a data driver for generating data signals may be mounted on the printed circuit board 140, and the generated data signal is supplied to a plurality of sub-pixels and circuits of the display panel 120 through the flexible film 130. Can be. Meanwhile, in FIG. 5, although the printed circuit board 140 is shown as one, the number of the printed circuit boards 140 may be variously changed according to design, and is not limited thereto.

The back cover 110 is disposed on the rear surface of the display panel 120, the flexible film 130, and the printed circuit board 140 to support the display panel 120, the flexible film 130, and the printed circuit board 140 do. Accordingly, the back cover 110 may be larger than the size of the display panel 120. Accordingly, the back cover 110 may protect other components of the display unit DP from the outside. The back cover 110 is formed of a material having rigidity, but at least a portion of the back cover 110 may have flexibility to wind or unwind together with the display panel 120. For example, the back cover 110 may be made of a metal material such as steel use stainless (SUS) or invar, or a material such as plastic. However, if the material of the back cover 110 satisfies the physical property conditions such as the amount of heat deformation, the radius of curvature, and stiffness according to the design, it can be variously changed, and is not limited thereto.

The fixing member 170 is disposed to cover the upper surface of the display panel 120 at one end of the non-display area NA of the display panel 120, and the other end may be fixed to the back cover 110. At this time, the fixing member 170 may be fixed to the back cover 110 through a separate mechanism, but is not limited thereto. A more detailed description of the fixing relationship between the fixing member 170 and the back cover 110 will be described later with reference to FIG. 8.

The fixing member 170 may prevent the display panel 120 from being peeled off the back cover 110 by pressing one end of the display panel 120 when the display device 100 is wound. Accordingly, the fixing member 170 may be made of a material having rigidity to press the display panel 120. For example, the fixing member 170 may be formed of a leaf spring, a metal layer, or a plastic layer, but is not limited thereto, and the fixing member 170 may be variously changed according to design.

Referring to FIG. 6, the display panel 120 includes a substrate 121, a buffer layer 122, a pixel portion 123, an encapsulation layer 124, and an encapsulation substrate 125.

The substrate 121 is a base member for supporting various components of the display panel 120 and may be made of an insulating material. The substrate 121 may be made of a material having flexibility, for example, to make the display panel 120 wind or unwind, and may be made of a plastic material such as polyimide (PI).

The buffer layer 122 may prevent diffusion of moisture and/or oxygen that has penetrated from the outside of the substrate 121. The buffer layer 122 may be formed of a single layer or multiple layers of silicon oxide (SiOx) and silicon nitride (SiNx), but is not limited thereto.

The pixel unit 123 includes a plurality of organic light emitting elements and circuits for driving the organic light emitting elements. The pixel unit 123 may be an area corresponding to the display area AA. The organic light emitting device may include an anode, an organic light emitting layer and a cathode.

The anode may supply holes to the organic emission layer, and may be made of a conductive material having a high work function. For example, anodes include tin oxide (TO), indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc oxide (ITZO), and the like. It can be made, but is not limited to this.

The organic light emitting layer may receive holes from the anode and receive electrons from the cathode to emit light. The organic emission layer may include a red organic emission layer, a green organic emission layer, a blue organic emission layer, and a white organic emission layer according to the color of light emitted from the organic emission layer. In this case, when the organic emission layer is a white organic emission layer, color filters of various colors may be additionally disposed.

The cathode may supply electrons to the organic emission layer, and may be made of a conductive material having a low work function. For example, the cathode may be made of any one or more selected from the group consisting of metals such as magnesium (Mg), silver (Ag), aluminum (Al), and alloys thereof, but is not limited thereto.

Meanwhile, the display panel 120 may be configured in a top emission or bottom emission method according to a direction in which light emitted from the organic light emitting device is emitted.

The top emission method is a method in which light emitted from an organic light emitting device is emitted to an upper portion of the substrate 121 on which the organic light emitting device is formed. In the case of the top emission method, a reflective layer may be formed under the anode to advance the light emitted from the organic light emitting device to the upper portion of the substrate 121, that is, to the cathode side.

The bottom emission method is a method in which light emitted from an organic light emitting device is emitted to a lower portion of the substrate 121 on which the organic light emitting device is formed. In the case of the bottom emission method, in order to advance the light emitted from the organic light emitting device to the lower portion of the substrate 121, the anode may be made of only a transparent conductive material, and the cathode may be made of a metal material having high reflectivity.

Hereinafter, for convenience of description, it will be described on the assumption that the display device 100 according to an exemplary embodiment is a bottom emission type display device, but is not limited thereto.

A circuit for driving the organic light emitting element is disposed in the pixel unit 123. The circuit may be formed of a thin film transistor, a storage capacitor, a gate wiring, a data wiring, a power wiring, etc., but may be variously changed according to the design of the display device 100.

An encapsulation layer 124 covering the pixel portion 123 is disposed on the pixel portion 123. The encapsulation layer 124 seals the organic light emitting element of the pixel portion 123. The encapsulation layer 124 may protect the organic light emitting device of the pixel unit 123 from external moisture, oxygen, and shock. The encapsulation layer 124 may be formed by alternately stacking a plurality of inorganic layers and a plurality of organic layers. For example, the inorganic layer may be made of an inorganic material such as silicon nitride (SiNx), silicon oxide (SiOx), aluminum oxide (AlOx), and the organic layer may be an epoxy-based or acrylic-based polymer. However, it is not limited thereto.

The encapsulation substrate 125 is disposed on the encapsulation layer 124. The encapsulation substrate 125 protects the organic light emitting device of the pixel unit 123 together with the encapsulation layer 124. The encapsulation substrate 125 may protect the organic light emitting device of the pixel unit 123 from external moisture, oxygen, and shock. The encapsulation substrate 125 has strong corrosion resistance and is easy to process in the form of foil or thin film, such as aluminum (Al), nickel (Ni), chromium (Cr), iron (Fe), and alloy materials of nickel, metal, etc. It can be made of material. Accordingly, as the sealing substrate 125 is formed of a metal material, the sealing substrate 125 may be implemented in an ultra-thin form, and strong protection against external shocks and scratches may be provided.

A first adhesive layer AD1 may be disposed between the encapsulation layer 124 and the encapsulation substrate 125. The first adhesive layer AD1 may bond the encapsulation layer 124 and the encapsulation substrate 125. The first adhesive layer AD1 is made of a material having adhesive properties, and may be a heat-curable or self-curing adhesive. For example, the first adhesive layer AD1 may be made of optical clear adhesive (OCA), pressure sensitive adhesive (PSA), or the like, but is not limited thereto.

Meanwhile, the first adhesive layer AD1 may be disposed to surround the encapsulation layer 124 and the pixel unit 123. That is, the pixel portion 123 may be sealed by the buffer layer 122 and the sealing layer 124, and the sealing layer 124 and the pixel portion 123 may be sealed by the buffer layer 122 and the first adhesive layer AD1. Can be sealed. The first adhesive layer AD1 may protect the organic light emitting device of the pixel unit 123 from moisture, oxygen, and shock from the outside, along with the encapsulation layer 124 and the encapsulation substrate 125. At this time, the first adhesive layer AD1 may further include a hygroscopic agent. The hygroscopic agent may be a particle having hygroscopicity and absorb moisture and oxygen from the outside, thereby minimizing the penetration of moisture and oxygen into the pixel portion 123.

The back cover 110 is disposed on the encapsulation substrate 125. The back cover 110 is disposed to contact the encapsulation substrate 125 of the display panel 120 to protect the display panel 120. The back cover 110 may be formed of a material having rigidity to protect the display panel 120.

Meanwhile, the back cover 110 includes a plurality of openings 111. The plurality of openings 111 may allow the back cover 110 to have flexibility. The plurality of openings 111 may be flexibly deformed, and the back cover 110 may be wound on the roller 171 together with the display panel 120 or unwinded from the roller 171. A detailed description thereof will be described later with reference to FIG. 7.

The second adhesive layer AD2 is disposed between the encapsulation substrate 125 and the back cover 110. The second adhesive layer AD2 may bond the sealing substrate 125 and the back cover 110. The second adhesive layer AD2 is made of an adhesive material, and may be a heat-curable or self-curing adhesive. For example, the second adhesive layer AD2 may be made of optical clear adhesive (OCA), pressure sensitive adhesive (PSA), or the like, but is not limited thereto.

In FIG. 6, the second adhesive layer AD2 is not filled in the plurality of openings 111 of the back cover 110, but the second adhesive layer AD2 is formed of the plurality of openings 111 of the back cover 110. It can be partially or entirely filled. If, when the second adhesive layer (AD2) is filled inside the plurality of openings 111 of the back cover 110, the contact area between the second adhesive layer (AD2) and the back cover 110 increases to prevent peeling phenomenon Can be.

Meanwhile, although not illustrated in FIG. 6, a light-transmitting film may be further disposed on the back surface of the substrate 121. The transmissive film may perform functions such as protecting the front surface of the display panel 120 or minimizing reflection of external light incident on the display panel 120. For example, the light-transmitting film may be at least one film of a polyethylene terephthalate (PET) film, a cyclo olefin polyer (COP) film, an anti-reflection film, a polarizing film, and a transmittance controllable film.

Hereinafter, the back cover 110 will be described in more detail with reference to FIG. 7.

<Specific configuration of back cover>

7 is a plan view of a back cover of a display device according to an exemplary embodiment of the present invention.

Referring to FIG. 7, the back cover 110 includes a plurality of support areas PA and a plurality of flexible areas MA. The plurality of supporting areas PA is an area in which the plurality of openings 111 are not arranged, and the plurality of flexible areas MA is an area in which the plurality of openings 111 are arranged. Specifically, the first support region PA1, the first soft region MA1, the third support region PA3, the second soft region MA2, and the second support region PA2 from the top end of the back cover 110 These are arranged sequentially.

The first support area PA1 of the back cover 110 is an uppermost area of the back cover 110 and is an area engaged with the head bar 164. A first fastening hole AH1 is formed in the first support area PA1 for fastening with the head bar 164. And, as described above in Figure 3, the head (164) and the screw (SC) penetrating the first fastening hole (AH1) is disposed, the first support area of the head bar (164) and the back cover (110) ( PA1) can be fastened. And, as the first support area PA1 is fastened with the head bar 164, when the link portion 162 fastened to the head bar 164 is raised or lowered, the back cover 110 is also elevated or lowered together. The display panel 120 attached to the back cover 110 may also be elevated or lowered together. In FIG. 7, the first fastening hole AH1 is shown as five, but the number of first fastening holes AH1 is not limited thereto. In addition, in FIG. 7, the back cover 110 is described as being fastened to the head bar 164 using the first fastening hole AH1, but is not limited thereto, and the back cover 110 and the head are provided without a separate fastening hole. The bar 164 may be fastened.

The first flexible area MA1 is an area extending from the third support area PA3 to the lower side of the back cover 110. The first flexible area MA1 is an area in which a plurality of openings 111 are disposed and the display panel 120 is attached.

When the display portion DP is wound on the roller 151 so that the display portion DP is accommodated inside the housing portion HP, the first flexible region MA1 and the first flexible region MA1 of the back cover 110 are wound. ), the lower portion and the central portion of the display panel 120 may be wound on the roller 151. At this time, the first flexible area MA1 of the back cover 110 may have a plurality of openings 111 to have high flexibility, and may be easily wound on the roller 151 together with the display panel 120. Can.

The third support area PA3 is an area extending from the first soft area MA1 to the lower side of the back cover 110. The flexible film 130 and the printed circuit board 140 connected to one end of the display panel 120 are attached to the third support area PA3.

The third support area PA3 is such that the flexible film 130 and the printed circuit board 140 are wound on the roller 151 in a flat shape rather than a curved surface to protect the flexible film 130 and the printed circuit board 140. can do. In addition, a portion of the roller 151 may also be formed in a flat shape corresponding to the third support area PA3.

The second flexible area MA2 is an area extending from the third support area PA3 to the lower side of the back cover 110. In addition, a plurality of openings 111 are disposed in the second flexible region MA2.

The second flexible area MA2 is an extended area so that the display area AA of the display panel 120 can be disposed outside the housing part HP. For example, when the back cover 110 and the display panel 120 are in a fully unwinded state, the flexible film 130 from the second support area PA2 of the back cover 110 fixed to the roller 151 And the third support area PA3 to which the printed circuit board 140 is attached, may be disposed inside the housing part HP, and the first flexible area MA1 and the third support to which the display panel 120 is attached. The area PA3 may be disposed outside the housing part HP. At this time, the length of the second flexible region MA2 and the third supporting region PA3 from the second supporting region PA2 fixed to the roller 151 is from the second supporting region PA2 to the housing part HP. If it is smaller than the length to the opening HPO, a part of the first flexible area MA1 to which the display panel 120 is attached may be disposed inside the housing part HP. Therefore, since a part of the lower portion of the display area AA of the display panel 120 is disposed inside the housing part HP, it may be difficult to watch an image. Therefore, the length of the second flexible area MA2 and the third support area PA3 from the second support area PA2 fixed to the roller 151 is the second support area PA2 fixed to the roller 151. It can be designed to be the same as the length from to the opening (HPO) of the housing portion (HP).

The second support area PA2 of the back cover 110 is the area at the bottom of the back cover 110 and is engaged with the roller 151. A second fastening hole AH2 may be formed in the second support area PA2 for fastening with the roller 151. For example, the screw SC passing through the roller 151 and the second fastening hole AH2 is disposed, so that the second support area PA2 of the roller 151 and the back cover 110 can be fastened. . In addition, as the second support area PA2 is engaged with the roller 151, the back cover 110 may be wound or unwinded to the roller 151 by rotation of the roller 151. In FIG. 7, the second fastening hole AH2 is shown as two, but the number of second fastening holes AH2 is not limited thereto. In addition, in FIG. 7, the back cover 110 is described as being fastened with the roller 151 using the second fastening hole AH2, but is not limited thereto, and the back cover 110 and the roller (without a separate fastening hole) 151) may be fixed.

The flexible area MA of the back cover 110 is an area wound or unwinded on the roller 151 together with the display panel 120. The flexible area MA may overlap at least the display panel 120 among other configurations of the display unit DP.

A plurality of openings 111 are disposed in the flexible area MA of the back cover 110. When the display unit DP is wound or unwinded, the plurality of openings 111 may be deformed by stress applied to the display unit DP. Specifically, when the display unit DP is wound or unwinded, the flexible area MA of the back cover 110 may be deformed as the plurality of openings 111 contract or expand. Then, as the plurality of openings 111 contract or expand, the slip phenomenon of the display panel 120 disposed on the flexible area MA of the back cover 110 is minimized and applied to the display panel 120. Losing stress, ie stress can be minimized.

When winding the display panel 120 and the back cover 110, due to the difference in the radius of curvature between the display panel 120 and the back cover 110, the length and back of the display panel 120 wound on the roller 151 The length of the cover 110 is different. For example, when winding the back cover 110 and the display panel 120 to the roller 151, the length required for the back cover 110 and the display panel 120 to be wound once on the roller 151 Can be different. That is, since the display panel 120 is disposed outside the back cover 110 based on the roller 151, the length required for the display panel 120 to be wound once on the roller 151 is the back cover 110 ) May be longer than the length required to wind the roller 151 once. As such, when winding the display unit DP, the lengths of the windings in the back cover 110 and the display panel 120 are different due to a difference in the radius of curvature, and the display panel 120 attached to the back cover 110 slides You can move away from your original location. In this case, a phenomenon in which the display panel 120 slips from the back cover 110 due to a difference in a radius of curvature and a stress caused by winding may be defined as a slip phenomenon. When the slip is excessively large, the display panel 120 may be detached from the back cover 110 or a defect such as crack may occur.

At this time, in the display device 100 according to an embodiment of the present invention, even if the display unit DP is wound or unwinded and stress is applied to the display unit DP, the plurality of openings 111 of the back cover 110 are flexible. It can be deformed to relieve stress applied to the back cover 110 and the display panel 120. For example, when the back cover 110 and the display panel 120 are wound on the roller 151, stress that deforms the back cover 110 and the display panel 120 in the vertical direction may be applied. At this time, the plurality of openings 111 of the back cover 110 may extend in the vertical direction of the back cover 110, and the length of the back cover 110 may be flexibly deformed. Accordingly, the length difference between the back cover 110 and the display panel 120 due to the difference in the radius of curvature during the process of winding the back cover 110 and the display panel 120 is a plurality of openings 111 of the back cover 110 Can compensate. In addition, in the process of winding the back cover 110 and the display panel 120, a plurality of openings 111 are deformed, and stress applied to the display panel 120 from the back cover 110 can also be relieved.

Referring to FIG. 7, the plurality of openings 111 are alternately arranged with respect to the plurality of openings 111 of neighboring rows. For example, the plurality of openings 111 arranged in one row are alternately arranged with the plurality of openings 111 arranged in a row adjacent to the corresponding row. Specifically, the center of the plurality of openings 111 arranged in the odd rows and the center of the plurality of openings 111 arranged in the even rows may be arranged to be staggered, for example, the row direction of the opening 111 It may be arranged to stagger by 1/2 of the width (111WR) for. However, the arrangement of the plurality of openings 111 illustrated in FIG. 7 is exemplary and is not limited thereto.

At this time, the plurality of openings 111 as formed in the flexible area MA are not formed in the first support area PA1 and the second support area PA2. That is, only the first fastening hole AH1 and the second fastening hole AH2 are formed in each of the first support area PA1 and the second support area PA2, and a plurality of the same as those formed in the flexible area MA. The opening 111 is not formed. In addition, the first fastening hole (AH1) and the second fastening hole (AH2) has a plurality of openings 111 and the shape is different from each other. The first support area PA1 and the second support area PA2 are areas that are fixed to the head bar 164 and the roller 151, respectively, and should have stiffness than the soft area MA. Specifically, as the first support area PA1 and the second support area PA2 have rigidity, the first support area PA1 and the second support area PA2 have a head bar 164 and a roller 151 ). Therefore, the display unit DP is fixed to the roller 151 and the head bar 164 of the driving unit MP, and may be moved to the inside or outside of the housing unit HP according to the operation of the driving unit MP.

In the display device 100 according to an exemplary embodiment of the present invention, a back cover 110 in which a plurality of openings 111 are formed is disposed on the rear surface of the display panel 120 to support and protect the display panel 120. The back cover 110 is formed of a metal material or the like, and at the same time, a plurality of openings 111 are formed in the flexible area MA in which the display panel 120 is disposed among the back cover 110, and the back cover 110 is formed. ) Can be improved. Accordingly, in a state where the display unit DP of the display device 100 is fully unwinded disposed outside the housing unit HP, the back cover 110 made of a material having high rigidity has a display panel 120 ) To spread out flat. On the other hand, in the fully wound state in which the display unit DP of the display device 100 is accommodated inside the housing unit HP, the back cover 110 having high flexibility by the plurality of openings 111 is displayed. Along with the panel 120, the roller 151 may be wound and stored.

Also, in the display device 100 according to an exemplary embodiment of the present invention, the width of the plurality of openings 111 in the row direction may be adjusted so that the back cover 110 has flexibility, and the back cover The stress applied when winding 110 may be relieved. Specifically, when the back cover 110 and the display panel 120 are wound on a roller, the back cover 110 may be bent in a column direction, and a stress may be applied so that the plurality of openings 111 extend in the column direction. Can. The plurality of openings 111 form a large width for the row direction, so that when the back cover 110 and the display panel 120 are wound on the roller 151, the plurality of openings 111 can be easily moved in the column direction. It can be stretched, and stress applied to the back cover 110 can be relieved. Accordingly, in the display device 100 according to an exemplary embodiment of the present invention, the flexibility of the back cover 110 can be increased by adjusting the width of the plurality of openings 111 in the row direction, and the back cover 110 And the display panel 120 can be easily wound on the roller 151. In addition, since the plurality of openings 111 expand in the column direction, stress applied to the back cover 110 and the display panel 120 can be relieved, and damage to the display panel 120 can be reduced.

<No fixed member>

8 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention.

5 and 8, the fixing member 170 is disposed to cover the upper surface of the display panel 120 in the bonding area BA of the display panel 120. Specifically, the fixing member 170 is one end fixed to the fixture for fixing the fixing member 170 and the back cover 110, and the other end is disposed to cover the bonding area BA of the display panel 120 do. Accordingly, the fixing member 170 may be disposed to cover the flexible film 130 connected to the display panel 120. The fixing member 170 may cover the entire upper surface of the display panel 120 in the bonding area BA, or may cover only a part of the upper surface of the display panel 120 in the bonding area BA. In addition, a separate adhesive layer may be disposed between the fixing member 170 and the display panel 120 to bond the fixing member 170 and the display panel 120.

Referring to FIG. 8, the display device 100 includes a fixture for fixing the fixing member 170 and the back cover 110. Specifically, the appliance may include a base plate (BP), a bottom cover (BC) and a top cover (TC).

The base plate BP is disposed on the back surface of the back cover 110. In addition, the base plate BP includes a fixing protrusion BP1 protruding from one surface toward the top cover TC, whereby the fixing protrusion BP1 has a back cover 110, a bottom cover BC, and a top cover Through the (TC) it can be fastened to the fixing mechanism (FM1). A structure in which the fixing mechanism FM1 can be fastened may be disposed inside the fixing protrusion BP1. For example, the fixing protrusion BP1 may be formed in a structure such as a femme nut, and a thread is formed inside the fixing protrusion BP1 so that the fixing mechanism FM1 is fixed by a screw inside the fixing protrusion BP1. (BP1).

The bottom cover BC is disposed on the back cover 110. The bottom cover BC may be fixed to the base plate BP as the fixing protrusion BP1 of the base plate BP penetrates. That is, a hole through which the fixing protrusion BP1 of the base plate BP can pass may be disposed in the bottom cover BC. In addition, the flexible film 130 and the printed circuit board 140 are disposed on the bottom cover BC to fix the flexible film 130 and the printed circuit board 140.

The top cover TC is disposed above the bottom cover BC. The top cover TC is disposed to cover the flexible film 130 and the printed circuit board 140 disposed on the bottom cover BC and the bottom cover BC, and thus the flexible film 130 and the printed circuit board 140 Can protect. A hole through which the fixing protrusion BP1 of the base plate BP penetrates and the fixing mechanism FM1 may be inserted may be disposed in the top cover TC. In addition, the top cover TC is disposed on the flat surface of the roller 151 when the display device 100 is wound, so that the shape formed by the roller 151 and the top cover TC is substantially circular, so that the outer circumferential surface has a curved shape. Can have

Referring to FIG. 8, one surface of the fixing member 170 is disposed to cover the top cover TC of the fixture, and the fixing member 170 may be fixed to the fixture through a separate coupling member FM2. At this time, the coupling member FM2 may be a screw, a screw, or a femme nut, but is not limited thereto. In addition, in FIG. 8, although the fixing member 170 is shown to be fixed to the top cover TC, the fixing member 170 may be fixed to the bottom cover BC, and the fixing member 170 may be back cover 110 Any fixture that can be fixed to) can be used.

In general, in a rollable display device, a metal back cover for supporting the display panel is disposed on the rear surface of the display panel. During winding of the rollable display device, a force to maintain a flat state of the display panel occurs in the process of the back cover fixed to the roller being rolled on the roller, and tensile stress may occur in the display panel during the winding process. Therefore, the display panel may be peeled from the back cover during the winding process. In addition, even if the display panel is not peeled off from the back cover, the pad of the display panel disposed in the bonding area where the flexible film is bonded, or by the tensile force applied to the display panel and the force to maintain the flat state during the winding process, The pad of the flexible film may be damaged. In addition, various inorganic layers and wiring disposed in the bonding area may also be damaged. As described above, when a pad, a wiring, or the like disposed in the bonding area is damaged, a signal is not normally supplied to the display device, and thus a driving failure of the display device may occur.

However, in the display device 100 according to an exemplary embodiment of the present invention, the fixing member 170 is disposed to cover the upper surface of the display panel 120 in the bonding area BA of the display panel 120, so that the display device ( When the winding of 100), it is possible to reduce the peeling of the display panel 120 from the back cover 110. Specifically, in the display device 100 according to an embodiment of the present invention, during the winding process of the display device 100, a force to maintain the flat state of the display panel 120 occurs, and the force is excessively generated. In this case, an end of the display panel 120 corresponding to the bonding area BA may be peeled from the back cover 110. At this time, the fixing member 170 disposed to cover the bonding area BA presses the bonding area BA of the display panel 120 to maintain a flat state, so that the display panel 120 is removed from the back cover 110. Peeling can be minimized. Accordingly, the display panel 120 may be wound on the roller 151 without being peeled off from the back cover 110, and the pad of the display panel 120 or the pad of the flexible film 130 disposed on the bonding area BA , Various wiring and inorganic layers may also not be damaged. Accordingly, in the display device 100 according to an exemplary embodiment of the present invention, it is possible to prevent a pad, a wiring, and an inorganic layer, etc., disposed in the bonding area BA from being damaged, thereby causing a problem of driving failure in the display device 100. Can be solved.

<Fixing member disposed between a plurality of flexible films>

9 is a plan view of a display device according to an exemplary embodiment of the present invention. 10A is a cross-sectional view taken along line Xa-Xa' of FIG. 9. 10B is a cross-sectional view taken along line Xb-Xb' in FIG. 9. The display device 900 of FIGS. 9 to 10B is different from the display device 100 of FIGS. 1 to 8, only the fixing member 970 is different, and other configurations are substantially the same, and thus duplicate description is omitted.

Referring to FIG. 9, the display device 900 includes a plurality of flexible films 130, and the fixing member 970 is disposed to correspond between the plurality of flexible films 130 in the bonding area BA.

Specifically, the fixing member 970 includes a base portion 971 and a plurality of extension portions 972. The base portion 971 of the fixing member 970 is a portion fixed to the back cover 110, and the plurality of extension portions 972 protrude from the base portion 971 and display panels between the plurality of flexible films 130 It is a part arranged to cover the upper surface of (120). Thus, the fixing member 970 may be disposed so as not to cover the flexible film 130.

Referring to FIG. 10A, in a region where the flexible film 130 is not disposed, the base portion 971 of the fixing member 970 is disposed on the back cover 110, and a plurality of extension portions of the fixing member 970 972 is disposed to cover the top surface of the display panel 120. The base portion 971 of the fixing member 970 may be fixed to the back cover 110 by a fixing mechanism FM3, but is not limited thereto and may be fixed to the back cover 110 by a separate adhesive layer.

Referring to FIG. 10B, in an area where the flexible film 130 is disposed, the base portion 971 of the fixing member 970 is disposed between the flexible film 130 and the back cover 110. That is, the flexible film 130 is disposed to cover the base portion 971 of the fixing member 970 and is connected to the display panel 120 and the printed circuit board 140. In FIG. 10B, the flexible film 130 is disposed to be spaced apart from the base portion 971 of the fixing member 970, but is not limited thereto, and the flexible film 130 may be disposed to contact the base portion 971 or separately. It may be attached to the base portion 971 by the adhesive layer of the.

In the display device 900 according to another embodiment of the present invention, a plurality of extensions 972 of the fixing member 970 are disposed to correspond between the plurality of flexible films 130, and the fixing member 970 Damage to the display panel 120 and the plurality of flexible films 130 can be reduced. Specifically, the fixing member 970 is a rigid material capable of pressing the display panel 120 to reduce the peeling of the display panel 120 from the back cover 110 when the display device 900 is wound. Is done. At this time, the fixing member 970 may press the display panel 120 and the flexible film 130 when the display device 900 is wound, and the fixing member 970 may display the display panel 120 and the flexible film 130 ), the flexible film 130 disposed under the fixing member 970 may be damaged. Accordingly, the fixing member 970 is disposed only in the area where the flexible film 130 is not disposed, that is, between the flexible film 130, and when the display device 900 is wound, the fixing member 970 is pressed by bonding. The flexible film 130 disposed in the area BA, the pads of the display panel 120, and various wiring and inorganic layers can be reduced, while the display panel 120 is peeled from the back cover 110. Can be reduced.

Further, in some embodiments, the display panel 120 may include a plurality of conductive elements disposed in the bonding area BA. For example, various conductive elements such as various wirings, pads, and circuits may be disposed in the bonding area BA of the display panel 120. Further, the plurality of conductive elements may be disposed in a space between the plurality of flexible films 130. At this time, the fixing member 970 may press various conductive elements of the display panel 120 when the display device 900 is wound, and when the fixing member 970 has a large force to press the conductive element, the fixing member The conductive element disposed under (970) may be damaged. Accordingly, the fixing member 970 is disposed on the upper surface of the display panel 120 so as not to overlap with the plurality of conductive elements, and when the display device 900 is wound, the conductive element is damaged by the pressing of the fixing member 970 It is possible to reduce the peeling of the display panel 120 from the back cover 110 while being able to reduce it.

<Fixing member including passage hole>

11 is a plan view of a display device according to an exemplary embodiment of the present invention. 12 is a cross-sectional view taken along XII-XII' of FIG. 11 according to another embodiment of the present invention. The display device 1100 of FIG. 11 is different from only the display device 900 of FIGS. 9 to 10B, and only the fixing member 1170 and the protective resin P are different. do.

11 and 12, the fixing member 1170 includes a through hole 1173 through which a plurality of flexible films 130 can pass. The through hole 1173 of the fixing member 1170 is disposed to correspond to the region where the flexible film 130 is disposed, so that the flexible film 130 disposed on the fixing member 1170 in the third support region PA3 is In the first flexible area MA1, the display panel 120 and the back cover 110 may be disposed.

Referring to FIG. 11, the fixing member 1170 may be disposed to cover the entire upper surface of the display panel 120 except for a region in which the through hole 1173 is disposed in the bonding area BA. Accordingly, the fixing member 1170 may cover the upper surface of the display panel 120 in the bonding area BA so as not to overlap the flexible film 130.

Referring to FIG. 12, the display device 1100 may further include a protective resin P. The protective resin P may be disposed between the fixing member 1170 and the display panel 120. Specifically, the fixing member 1170 is disposed to cover the top surface of the display panel 120. At this time, the protective resin (P) is disposed between the fixing member 1170 and the display panel 120, it is possible to reduce the occurrence of scratches on the upper surface of the display panel 120 by the fixing member 1170. The protective resin (P) may be made of various resin materials, but is not limited thereto.

In the display device 1100 according to another exemplary embodiment of the present invention, the fixing member 1170 is disposed to cover the entire upper surface of the display panel 120 in the bonding area BA, and the flexible film 130 is disposed. Including the through hole 1173 to correspond to the region, damage to the display panel 120 and the flexible film 130 can be minimized while minimizing the peeling of the display panel 120 from the back cover 110. Specifically, since the fixing member 1170 is made of a material having rigidity capable of pressing the display panel 120, during the winding process of the display device 1100, the fixing member 1170 displays the display panel 120 and the flexible The flexible film 130 may be damaged by pressing the film 130. Accordingly, in the display device 1100 according to another embodiment of the present invention, the fixing member 1170 includes a through hole 1173 through which the flexible film 130 can pass, and at the same time in the bonding area BA. The flexible film 130 is disposed only in an area where the flexible film 130 is not disposed, so that the area where the fixing member 1170 overlaps the flexible film 130 may be removed. Accordingly, when the display device 1100 is wound, the fixing member 1170 may pressurize the flexible film 130 while pressing the bonding area BA of the display panel 120 as a whole. Accordingly, while the display panel 120 is peeled from the back cover 110 when the display device 1100 is wound, the flexible film 130 disposed in the bonding area BA by the fixing member 1170 may be reduced. In addition, damage to the pads of the display panel 120, various wirings, and inorganic layers may also be minimized.

In the display device 1100 according to another exemplary embodiment of the present invention, the protective resin P is disposed between the fixing member 1170 and the display panel 120 to display the panel 120 by the fixing member 1170. It is possible to reduce the occurrence of scratches on the upper surface of the. Specifically, since the fixing member 1170 is made of a material having rigidity, when winding the display device 1100, the fixing member 1170 presses the display panel 120 in the process of pressing the display panel 120 on the upper surface of the display panel 120. Scratches may occur. Thus, by placing the protective resin (P) between the fixing member 1170 and the display panel 120, a scratch on the upper surface of the display panel 120 by the fixing member 1170 in the winding process of the display device 1100 What is occurring can be reduced.

<Fixing member including a plurality of fixing clips>

13 is a plan view of a display device according to an exemplary embodiment of the present invention. 14 is a cross-sectional view taken along line XIV-XIV' of FIG. 13. Since the display device 1300 of FIGS. 13 to 14 is different from the display device 900 of FIGS. 9 to 10b only the back cover 1310 and the fixing member 1370 are different, other configurations are substantially the same. Redundant explanation is omitted.

13, the fixing member 1370 includes a plurality of fixing clips spaced apart from each other. The plurality of fixing clips are respectively disposed between the plurality of flexible films 130, and each of the plurality of fixing clips are disposed spaced apart from each other.

13 and 14, the back cover 1310 includes one or more through holes 1312. Specifically, the through-hole 1312 of the back cover 1310 is disposed to correspond to each of the plurality of flexible films 130, the plurality of fixing clips of the fixing member 1370 may penetrate. At this time, the through-hole 1312 is disposed to correspond to each of the plurality of flexible film 130, one fixing clip of the fixing member 1370 may penetrate through one through-hole 1312, but is not limited to this However, one through hole 1312 is disposed in the back cover 131, and a plurality of fixing clips of the fixing member 1370 may be disposed in one through hole 1312.

13 and 14, a plurality of fixing clips of the fixing member 1370 may penetrate the through hole 1312 of the back cover 1310. That is, one end of each of the plurality of fixing clips of the fixing member 1370 is disposed on the upper surface of the display panel 120, and the other end is disposed so as not to overlap the display panel 120 on the rear surface of the back cover 1310. The display panel 120 can be fixed to the back cover 1310. In FIG. 14, the plurality of fixing clips of the fixing member 1370 are shown to directly contact the display panel 120 and the back cover 1310, but the plurality of fixing clips and display panel 120 and the bag of the fixing member 1370 A separate adhesive layer may be disposed between the covers 1310.

15 is a cross-sectional view of a display device according to still another embodiment of the present invention. The display device 1500 of FIGS. 13 to 15 is different from the display device 1300 of FIGS. 13 to 14 only in that the fixing member 1570 is different, and other configurations are substantially the same, and thus duplicate description is omitted.

Referring to FIG. 15, a plurality of fixing clips of the fixing member 1570 may penetrate the through hole 1312 of the back cover 1310. That is, one end of each of the plurality of fixing clips of the fixing member 1570 is disposed on the upper surface of the display panel 120, and the other end is disposed to overlap the display panel 120 on the rear surface of the back cover 1510. , The display panel 120 can be fixed to the back cover 1310. In FIG. 15, the plurality of fixing clips of the fixing member 1370 are shown to directly contact the display panel 120 and the back cover 1310, but the plurality of fixing clips and display panel 120 and the bag of the fixing member 1370 A separate adhesive layer may be disposed between the covers 1310.

In the display devices 1300 and 1500 according to various embodiments of the present disclosure, the fixing members 1370 and 1570 are formed of a plurality of fixing clips, and when the display devices 1300 and 1500 are wound, the display panel 120 Peeling from this back cover 1310 can be easily reduced. Particularly, when a plurality of fixing clips of the fixing members 1370 and 1570 are made of an elastic material such as a leaf spring, a shape to be fitted in the through hole 1312 of the back cover 1310 between the plurality of flexible films 130 The display panels 120 may be fixed to the back cover 1310 by arranging a plurality of fixing clips of the furnace fixing members 1370 and 1570. That is, when a plurality of fixing clips of the fixing members 1370 and 1570 are used, a separate fixing process using screws, screws, and the like may not be required. Accordingly, the fixing members 1370 and 1570 are configured with a plurality of fixing clips, so that when the display devices 1300 and 1500 are wound without additional fixing processes, the display panel 120 is easily peeled from the back cover 1310 Can be reduced.

Exemplary embodiments of the present invention can be described as follows.

In a display device according to an exemplary embodiment of the present invention, a plurality of pixels are defined, a display panel including a display area and a non-display area, a back cover disposed on the rear surface of the display panel, a roller fixed to the back cover, and a back cover It may be fixed to, and may include a fixing member covering the upper surface of the display panel in the non-display area.

According to another aspect of the invention, the display device further includes one or more flexible films bonded to the bonding area of the non-display area of the display panel, and the fixing member may cover the top surface of the display panel in the bonding area.

According to another feature of the present invention, the fixing member may cover the entire upper surface of the display panel in the bonding region.

According to another feature of the invention, the fixing member may include a through hole through which the flexible film passes.

According to another feature of the present invention, the fixing member may be fixed directly to the upper surface of the back cover on which the display panel is disposed, or indirectly fixed through a mechanism.

According to another feature of the present invention, the fixture includes a base plate and a top cover, and the fixing member can be fixed to the top cover.

According to another feature of the present invention, the appliance includes a bottom cover and a top cover, and the fixing member can be fixed to any one of the bottom cover and the top cover.

According to another feature of the present invention, the flexible film is plural, and the fixing member may be disposed to correspond between the plural flexible films in the bonding region.

According to another feature of the present invention, the fixing member may include a base portion fixed to the back cover and a plurality of extension portions extending from the base portion to cover the upper surface of the display panel between the plurality of flexible films.

According to another feature of the present invention, the fixing member is disposed between the plurality of flexible films, and includes a plurality of fixing clips spaced apart from each other, and the back cover includes one or more through holes through which the plurality of fixing clips pass. Can.

According to another feature of the present invention, one end of each of the plurality of fixing clips may be disposed on the upper surface of the display panel, and the other end may be disposed on the rear surface of the back cover.

According to another feature of the present invention, the display panel includes a plurality of conductive elements disposed in the bonding region, and the fixing member may be disposed on the upper surface of the display panel so as not to overlap the plurality of conductive elements.

According to another feature of the invention, the display device may further include a protective resin disposed between the display panel and the fixing member.

According to another feature of the invention, the fixing member may be made of a leaf spring, a metal layer or a plastic layer.

A display device according to another exemplary embodiment of the present invention includes a display panel for displaying an image, a back cover attached to a rear surface of the display panel, a plurality of flexible films electrically connected to the display panel, and a display panel on the back cover on the display panel It may include a fixing member for fixing, and a roller portion configured to wind or unwind the display panel and the back cover.

According to another aspect of the invention, the display panel includes a display area and a non-display area outside the display area, the non-display area includes a bonding area to which the display panel and the plurality of flexible films are bonded, and the fixing member is a bonding area In at least a portion of the upper surface of the display panel may be covered.

According to another feature of the present invention, the fixing member may cover the entire upper surface of the display panel in the plurality of flexible films and bonding regions.

According to another feature of the present invention, the fixing member may include a plurality of extension portions extending from the base portion and the base portion and covering the upper surface of the display panel in the bonding region between the plurality of flexible films.

According to another feature of the invention, the plurality of extensions of the fixing member may be connected to each other on the upper surface of the display panel in the bonding region.

According to another feature of the present invention, the fixing member includes a plurality of fixing clips, and the plurality of fixing clips can penetrate the back cover between each of the plurality of flexible films to fix the display panel to the back cover.

The embodiments of the present invention have been described in more detail with reference to the accompanying drawings, but the present invention is not necessarily limited to these embodiments, and may be variously modified without departing from the technical spirit of the present invention. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of protection of the present invention should be interpreted by the following claims, and all technical spirits within the equivalent range should be interpreted as being included in the scope of the present invention.

100, 1200, 1300, 1500: display device
110, 1310: back cover
111: opening
1312: through hole
120: display panel
121: substrate
122: buffer layer
123: pixel portion
124: sealing layer
125: sealing substrate
130: flexible film
140: printed circuit board
150: roller part
151: roller
152: roller support
153: roller rotating part
160: lift
161: link support
162: link section
163: Link elevator
164: head bar
162L: Link
164a: first head bar
164b: second head bar
170, 970, 1170, 1370, 1570: fixing member
971: base
972: extension
1173: passage hall
AA: display area
AD1: First adhesive layer
AD2: Second adhesive layer
AH1: 1st fastening hole
AH2: Second fastening hole
BA: Bonding area
BC: Bottom cover
BP: Base plate
BP1: Fixing projection of base plate
FM1, FM3: Fixture
FM2: Coupling member
TC: Top cover
DP: display
DR1: first direction
DR2: second direction
ED: stretching direction
HP: housing
HPF: bottom
MA: ductile domain
MA1: first soft region
MA2: 2nd soft area
MP: Drive
NA: Non-display area
P: protective resin
PA: support area
PA1: first support area
PA2: second support area
PA3: Third support area
PN: Pam Nut
SC: Screw
CP: cover

Claims (20)

A display panel in which a plurality of pixels are defined and including a display area and a non-display area;
A back cover disposed on the rear surface of the display panel;
A roller fixed to the back cover; And
And a fixing member fixed to the back cover and covering an upper surface of the display panel in the non-display area. According to claim 1,
Further comprising at least one flexible film bonded to the bonding area of the non-display area of the display panel,
The fixing member covers the upper surface of the display panel in the bonding area. According to claim 2,
The fixing member covers the entire upper surface of the display panel in the bonding area. According to claim 3,
The fixing member includes a through hole through which the flexible film passes. According to claim 2,
The fixing member is fixed directly to the upper surface of the back cover on which the display panel is disposed, or indirectly fixed through a mechanism. The method of claim 5,
The fixture includes a base plate and a top cover,
The fixing member is fixed to the top cover, a display device. The method of claim 5,
The appliance includes a bottom cover and a top cover,
The fixing member is fixed to any one of the bottom cover and the top cover, a display device. According to claim 2,
The flexible film is plural,
The fixing member is disposed to correspond between the plurality of flexible films in the bonding region. The method of claim 8,
The fixing member includes a base portion fixed to the back cover and a plurality of extension portions extending from the base portion to cover the upper surface of the display panel between the plurality of flexible films. The method of claim 8,
The fixing member is disposed between each of the plurality of flexible films, and includes a plurality of fixing clips spaced apart from each other,
The back cover includes at least one through hole through which the plurality of fixing clips pass. The method of claim 10,
One end of each of the plurality of fixing clips is disposed on an upper surface of the display panel, and the other end is disposed on a rear surface of the back cover. The method of claim 8,
The display panel includes a plurality of conductive elements disposed in the bonding region,
The fixing member is disposed on the upper surface of the display panel so as not to overlap the plurality of conductive elements. According to claim 1,
And a protective resin disposed between the display panel and the fixing member. According to claim 1,
The fixing member is made of a leaf spring, a metal layer or a plastic layer, a display device. A display panel for displaying an image;
A back cover attached to a rear surface of the display panel;
A plurality of flexible films electrically connected to the display panel;
A fixing member fixing the display panel to the back cover on the display panel; And
And a roller configured to wind or unwind the display panel and the back cover. The method of claim 15,
The display panel includes a display area and a non-display area outside the display area,
The non-display area includes a bonding area to which the display panel and the plurality of flexible films are bonded,
The fixing member covers at least a portion of an upper surface of the display panel in the bonding region. The method of claim 16,
The fixing member covers the entire upper surface of the display panel in the plurality of flexible films and the bonding region. The method of claim 16,
The fixing member includes a base portion and a plurality of extension portions extending from the base portion and covering an upper surface of the display panel in the bonding region between the plurality of flexible films. The method of claim 18,
The plurality of extensions of the fixing member are connected to each other on an upper surface of the display panel in the bonding area. The method of claim 16,
The fixing member includes a plurality of fixing clips,
The plurality of fixing clips penetrate the back cover between each of the plurality of flexible films to fix the display panel to the back cover.

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