KR20230011646A - Display apparatus - Google Patents

Abstract

The present specification relates to a display device and specifically, relates to the display device that reinforces a rigidity of a bending part by extending an adhesive layer and a cushion layer of a plate to a bending part area and a pad area, and enables the display device to be simplified by deleting a connecting member. The display device comprises: a display panel; a first plate; and a second plate.

Description

Display {DISPLAY APPARATUS}

The present specification relates to a display device, and more particularly, to a display device capable of reinforcing rigidity of the display device and removing a connection member without adding additional components.

Display devices for displaying images on TVs, monitors, smart phones, tablet PCs, laptops, and the like are being used in various ways and forms.

Following the Liquid Crystal Display Device (LCD), which has been used so far, among various types of display devices, the use and application range of Organic Light Emitting Display Device (OLED) is gradually expanding.

Display devices include a display panel having a plurality of light emitting elements or liquid crystals for realizing an image, and a driving transistor for individually controlling the operation of each light emitting element or liquid crystal, to display a plurality of light emitting elements or liquid crystals. information should be displayed.

Among them, since the liquid crystal display device is not a self-luminous type, a light source such as a backlight supplying light from the rear side of the liquid crystal display panel is required. The backlight increases the thickness of the liquid crystal display device, and there are limitations in implementing a display device that is bent or has various designs.

An organic light emitting display device having a self-light emitting element may be implemented thinner than a display device having a built-in light source, and since a separate light source is not required, display devices may be bent or have various designs.

Such an organic light emitting display device includes a flexible display panel. The flexible display panel may include a display area displaying an image and a non-display area surrounding the display area, and may include a bendable portion extending from the non-display area. A driver for driving a pixel or a pad for electrically connecting additional parts such as a flexible circuit board may be disposed on one side of the bending part.

The bending part that extends from one side of the front part, which is an area where an image of the display panel is displayed, and bends downward is located at the outermost part of the display device, so that the bending part can be easily deformed or damaged by external impact. When a component for absorbing the impact applied to the bending portion is added, the product structure becomes complicated and the product price increases.

In addition, when a plate for absorbing shock applied to the front portion of the display panel and removing heat generated from the display device is disposed below the display panel, the pad portion located below the front portion must be fixed to the plate. Even in the case of fixing the pad part to the plate, the addition of components is required, resulting in a complicated product structure and an increase in price.

Accordingly, the inventors of the present specification conducted several experiments capable of reinforcing the rigidity of the display device due to external impact without changing the structure of the display device. Through various experiments, a new display device capable of reinforcing the rigidity of the display device was invented.

An object to be solved according to the present specification is to provide a display device capable of improving the rigidity of a bending part and fixing a pad part to a plate without adding components.

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

A display device according to an embodiment of the present specification includes a display panel having a front portion that is an area where an image is displayed, a bending portion extending from the front portion, and a pad portion extending from the bending portion and disposed below the front portion; A first plate disposed between the front part and the pad part; and a second plate disposed between the front portion and the pad portion and including a heat dissipation layer, a cushion layer, and an adhesive layer, and the cushion layer may extend toward the bending portion.

A display device according to another embodiment of the present specification includes a display panel having a front portion that is an area where an image is displayed, a bending portion extending from the front portion, and a pad portion extending from the bending portion and disposed below the front portion; A first plate disposed between the front part and the pad part; and a second plate disposed between the front portion and the pad portion and including a heat dissipation layer, a cushion layer, and an adhesive layer, wherein the cushion layer and the adhesive layer may extend toward the bending portion.

Other embodiment specifics are included in the detailed description and drawings.

According to the embodiments of the present specification, since at least one of the cushion layer and the adhesive layer of the plate disposed under the front portion of the display panel extends to the pad portion, shock can be absorbed, thereby providing a display device with improved rigidity.

According to the embodiments of the present specification, the structure can be simplified by extending the adhesive layer of the plate to the pad portion of the display panel and removing the connecting member.

Effects of the present specification are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1A is a plan view illustrating a front side of a display device.
1B is a plan view illustrating a rear surface of the display device.
2 is a cross-sectional view taken along the line II' of FIG. 1A.
3 is a cross-sectional view illustrating another embodiment of a display device according to the present specification.
4 is a cross-sectional view showing a detailed structure of an adhesive layer according to the present specification.
5 is a cross-sectional view illustrating another embodiment of a display device according to the present specification.
6 is a cross-sectional view illustrating another embodiment of a display device according to the present specification.
7 is a cross-sectional view illustrating another embodiment of a display device according to the present specification.

Specific details for carrying out the present invention will become clear with reference to the embodiments described below together with the drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only the embodiments will make the disclosure of this specification complete, and the common knowledge in the art to which the present invention pertains. It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative, so the present invention is not limited to the details shown. Like reference numbers designate like elements throughout the specification. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present specification, the detailed description will be omitted. When 'includes', 'has', 'consists of', etc. mentioned in this specification is used, other parts may be added unless 'only' is used. In the case where a component is expressed in the singular, the case including the plural is included unless otherwise explicitly stated.

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

In the case of a description of a positional relationship, for example, 'on top of', 'on top of', 'at the bottom of', 'next to', etc. Or, unless 'directly' is used, one or more other parts may be located between the two parts.

When an element or layer is referred to as “on” another element or layer, it includes all cases where another element or layer is directly on top of another element or another layer or other element intervenes therebetween.

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

Like reference numbers designate like elements throughout the specification.

The size and thickness of each component shown in the drawings are shown for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated components.

Each feature of the various embodiments of the present specification can be partially or entirely combined or combined with each other, and as those skilled in the art can fully understand, various interlocking and driving operations are possible, and each embodiment can be implemented independently of each other. It may be possible to implement together in an association relationship.

The display device of the present specification may be applied to an organic light emitting display device, but is not limited thereto, and may be applied to various display devices such as an LED display device or a quantum dot display device.

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

FIG. 1A is a plan view showing the front of the display device, and FIG. 1B is a plan view showing the rear side of the display device.

FIG. 1A shows the front side of the display device 10 where the display area AA is located, and FIG. 1B shows the rear side of the display device 10 on which the driver 160 and the flexible circuit board 500 are mounted.

Referring to FIGS. 1A and 1B , the display device 10 may include a cover member 20 and a display panel 100 attached to a lower portion of the cover member 20 in a downward direction (-Z axis). . The display device 10 may include a first plate, a second plate, a connection member, and a third plate disposed below the display panel 100 .

The cover member 20 is disposed to cover the front surface of the display panel 100 to protect the display panel 100 from external impact.

An edge portion of the cover member 20 may have a curvature portion or a curved portion bent toward the rear surface of the display device 10 .

Since the cover member 20 may be arranged to cover even the lateral area of the display device 10 disposed on the rear surface, the display panel 100 can be protected from external impact not only on the front surface of the display device 10 but also on the side surface. .

The cover member 20 may overlap an area displaying an image. For example, the cover member 20 may be made of a cover glass made of a transparent plastic material or a transparent glass material capable of transmitting an image, but is not limited thereto.

The front part FP of the display panel 100 may be disposed under the cover member 20 . A pixel array unit including a plurality of light emitting elements, a pixel having a driving transistor, and a signal wire for transmitting a driving signal to the pixel is disposed on the front part FP, so that an image can be displayed. The front part FP may include an active area (AA) in which an image is displayed and a non-active area (NA) that is an area other than the display area (AA). The non-display area NA may be formed in an edge area surrounding the display area AA.

The display area AA and the non-display area NA may be equally applied to the cover member 20 . An area through which an image is transmitted in the cover member 20 may be a display area. An area surrounding the display area and not transmitting an image may be a non-display area.

The display panel 100 disposed under the cover member 20 may include a bending portion that extends from one side of the front portion FP and is bent.

The bending portion is located at the outermost part of the display panel 100 and can be easily exposed to an external impact, and can be easily deformed or damaged when an impact is applied. Accordingly, an impact may be absorbed by adding a support member or a reinforcing member for protecting the bending portion.

Hereinafter, a structure of the display device 10 for protecting a bending portion according to an embodiment of the present specification will be described.

2 is a cross-sectional view taken along the line II' of FIG. 1A.

Referring to Figure 2, The display device 10 may include a cover member 20 positioned at the top and a display panel 100 positioned below the cover member 20 .

A first connection member 150 may be disposed between the cover member 20 and the display panel 100 . The first connection member 150 may connect or combine the cover member 20 and the display panel 100 . For example, the first connection member 150 may be a fixing member, but is not limited to the term.

Since the first connection member 150 may overlap the display area AA, a material capable of transmitting an image of the display panel 100 may be used. For example, the first connection member 150 is formed of a material such as OCA (Optical Clear Adhesive), OCR (Optical Clear Resin), or PSA (Pressure Sensitive Adhesive), or is a material that may include the same, and is limited thereto. It is not.

A light blocking unit 21 may be disposed in an edge area including the non-display area NA on the lower surface of the cover member 20 .

In the light blocking unit 21 , various circuits and wires disposed in the non-display area NA of the display panel 100 and various structures that may be disposed in the non-display area NA of the display panel 100 are recognized by the user. can block it from happening.

The light blocking portion 21 may be disposed to correspond to at least the non-display area NA of the display panel 120 . The light blocking portion 21 may be made of a material capable of absorbing light. For example, the light blocking portion 21 may be formed of a black matrix and may be formed by printing black ink, but is not limited thereto.

The display panel 100 disposed under the cover member 20 may include a front portion FP, a bending portion BND, and a pad portion PAD with respect to the display substrate 110 .

The front portion FP of the display panel 100 may be disposed under the first connection member 150 . For example, the front part FP may be a part where an image is displayed, and may include a display substrate 110 , a pixel array part 120 , an encapsulation part 130 , and a polarizing plate 140 .

The bending portion BND of the display panel 100 may be a portion that extends from one side of the front portion FP and is bent from a lower (−Z axis) direction to a plane (Y axis) direction. The bending part BND may include the display substrate 110 and signal wires.

The pad part PAD of the display panel 100 may extend from the bending part BND and may be disposed below the front part FP. The pad unit PAD may include the display substrate 110 , signal lines, and pad electrodes connected to the signal lines. A driver 160 for driving pixels or a flexible circuit board 500 may be mounted on the pad electrode.

A polarizer 140 may be disposed on the front portion FP. In addition, a functional layer for improving display performance of the display device may be further disposed between the first connection member 150 and the polarizer 140 .

The polarizer 140 may improve outdoor visibility and contrast ratio of an image displayed on the display panel 100 by preventing reflection of external light.

The display substrate 110 may be disposed at the bottom of the display panel 100 . The display substrate 110 may be formed on all of the front portion FP, the bending portion BND, and the pad portion PAD. The display substrate 110 may be formed of a flexible plastic material and may have a flexible characteristic. The display substrate 110 may include polyimide, or may be made of a thin glass material having flexibility.

A pixel array unit 120 may be disposed on the display substrate 110 . The pixel array unit 120 may display an image. A portion where the pixel array unit 120 is disposed may be a display area AA. Accordingly, an area corresponding to the pixel array unit 120 based on the cover member 20 may be the display area AA, and an area other than the display area AA may be the non-display area NA.

The pixel array unit 120 may include a light emitting element, a thin film transistor for driving the light emitting element, and signal wires such as a gate line, a data line, and a pixel driving power supply line on the display substrate 110 .

The pixel array unit 120 may include pixels that display images according to signals supplied to signal lines, and the pixels may include light emitting devices and thin film transistors. The light emitting device may include an anode electrode electrically connected to the thin film transistor, a light emitting layer formed on the anode electrode, and a cathode electrode supplying a common voltage.

A thin film transistor may include a gate electrode, a semiconductor layer, a source electrode, and a drain electrode. The semiconductor layer of the thin film transistor may include silicon such as a-Si, poly-Si, or low-temperature poly-Si, or may include an oxide such as IGZO (Indium-Gallium-Zinc-Oxide), but is not limited thereto.

The anode electrode may be disposed in each pixel area to correspond to an opening area prepared according to a pixel pattern shape and electrically connected to the thin film transistor.

The light emitting device may include a light emitting layer formed between an anode electrode and a cathode electrode. The light emitting layer may be implemented to emit light of the same color for each pixel, such as white light, or may be implemented to emit light of different colors for each pixel, such as red, green, or blue light.

The encapsulation unit 130 may be disposed on the display substrate 110 to cover the pixel array unit 120 . The encapsulation unit 130 may prevent oxygen, moisture, or foreign substances from penetrating into the light emitting device layer of the pixel array unit 120 . The encapsulation unit 130 may have a multi-layer structure in which organic material layers and inorganic material layers are alternately stacked, but is not limited thereto.

The front part FP of the display panel 100 includes the display substrate 110 , the pixel array part 120 , and the encapsulation part 130 , and may be formed in a flat state except for an edge portion. A first plate 210 to be described later may be connected or coupled to a lower portion of the front portion FP so that the front portion FP can be maintained in a flat state.

In the bending portion BND of the display panel 100, the display substrate 110 may be disposed without the pixel array portion 120, the encapsulation portion 130, and the first plate 210 described later. It may be a part that can be easily bent in a direction desired by the user.

The pad part PAD of the display panel 100 may be a part where the pixel array part 120 and the encapsulation part 130 are not disposed. A second plate 220 to be described later may be connected or coupled to a lower portion of the pad portion PAD so that the pad portion PAD may maintain a flat state.

The first plate 210 disposed below the front portion FP of the display panel 100 and the second plate 220 disposed below the pad portion PAD are disposed below the display substrate 110 to While supplementing the rigidity of 110, it is possible to maintain the front part FP in a flat state.

The first plate 210 and the second plate 220 may be formed to have constant strength and thickness in order to supplement the rigidity of the display substrate 110, and the bending portion BND region where the bending portion BND is located. may not be formed.

Based on the shape of the display panel 100 before bending, the first plate 210 and the second plate 220 may be disposed under the display substrate 110 and spaced apart from each other.

Based on the shape of the display panel 100 after being bent, the first plate 210 is disposed below the front portion FP, and the second plate 220 is disposed above the pad portion PAD.

The first plate 210 and the second plate 220 may be back plates disposed on the rear surface of the display substrate 110 . The first plate 210 and the second plate 220 may be made of a plastic thin film having rigidity. For example, the first plate 210 and the second plate 220 may be made of polyethylene terephthalate (PET), polyimide (PI), or polyethylene naphthalate (PEN), but are not limited thereto. The first plate 210 and the second plate 220 may be formed of the same material and thickness, but are not limited thereto.

Based on the shape of the display panel 100 after being bent, the third plate 300 may be disposed between the first plate 210 and the second plate 220 . The third plate 300 may be a cushion plate, and the term is not limited thereto. In the following description, the cushion plate is described as the third plate 300, but it may be the second plate 300. For example, when the third plate 300 is a second plate, the second plate 220 may be a third plate, and may be used interchangeably.

The third plate 300 may include one or more of a heat dissipation layer 310 , an anti-lifting layer 320 , a cushion layer 330 , and an adhesive layer 340 . For example, the third plate 300 may have a form in which an adhesive layer 340, a cushion layer 330, an anti-lifting layer 320, and a heat dissipation layer 310 are sequentially stacked on top.

The heat dissipation layer 310 may be disposed to correspond to a component generating a high temperature, and may include a material having high thermal conductivity. Thereby, the heat dissipation effect can be improved.

For example, the heat dissipation layer 310 may include a metal having high thermal conductivity such as copper (Cu) or aluminum (Al) or graphite, but is not limited thereto. In addition, since the heat dissipation layer 310 has conductivity, it may have a heat dissipation function, a grounding function, and a function of protecting the rear surface of the display substrate 110 .

An anti-lifting layer 320 may be disposed on the heat dissipation layer 310 .

The anti-lifting layer 320 may be formed of a flexible material such as a polyimide film, but is not limited thereto.

When the side surface of the cover member 20 is bent, the anti-lifting layer 320 may cause a lifting phenomenon of the cushion plate 300 and may be disposed to prevent the lifting phenomenon.

Since the anti-lifting layer 320 has flexibility, a lifting phenomenon that may occur when a curved portion is formed in the cover member 20 can be minimized.

The cushion layer 330 is disposed on the anti-lifting layer 320 and may include a foam tape or a foam pad. The cushion layer 330 can alleviate the impact of various parts that can come into contact with the cushion plate 300 .

The cushion layer 330 having an impact mitigation function may reinforce the stiffness of the cushion plate 300 .

The adhesive layer 340 is disposed on the cushion layer 330 and may include a concave-convex structure formed on the surface of the adhesive layer 340 . The concavo-convex structure of the adhesive layer 340 can prevent air bubbles from being generated between the first plate 210 and the third plate 300 when the third plate 300 is attached to the first plate 210. , a degassing process for removing air bubbles between the first plate 210 and the third plate 300 may be omitted.

The adhesive layer 340 includes an adhesive component and directly contacts the first plate 210 to fix the third plate 300 to the first plate 210 .

A second connection member 400 and a second plate 220 may be disposed under the cushion plate 300 .

The second connection member 400 may be disposed between the third plate 300 and the pad part PAD. The second connecting member 400 may serve to fix the bent display panel 100 so that it can maintain its bent shape. The second connection member 400 may be formed to have a constant thickness in the thickness direction so as to keep the curvature of the bending portion BND constant. The second connection member 400 may be a double-sided tape having an adhesive force capable of fixing the second plate 220 and the heat radiation layer 310, but is not limited thereto. Alternatively, the second connection member 400 may be formed of a foam tape or foam pad having adhesive strength to further have an effect of mitigating impact.

A second plate 220 may be disposed under the second connection member 400 . In order to arrange the second plate 220, the second plate 220 is first attached to the lower surface of the pad part PAD, the bending part BND is bent, and the second plate 220 is attached to the second connecting member 400. ) can be attached and fixed to the lower surface of the

In a state where the second plate 220 is fixed to the second connecting member 400 , the second plate 220 may have a structure disposed on the pad part PAD. For example, the second connection member 400 and the second plate 220 may be disposed between the heat dissipation layer 310 of the third plate 300 and the pad portion PAD.

In a state in which the second plate 220 is fixed to the second connecting member 400, the outer portion, which is the upper surface of the bending portion BND, is exposed to the outside, and the lower portion, which is the inner portion, of the bending portion BND is exposed to the third plate. 300 and the second connection member 400 may be disposed toward the side.

A reinforcing member 600 may be disposed on an upper surface of the display panel 100 , which is an outer portion of the bending portion BND. The reinforcing member 600 covers the bending portion BND and may extend to cover at least some areas of the front portion FP and the pad portion PAD.

The reinforcing member 600 may include resin. For example, the reinforcing member 600 may include ultraviolet (UV) curable acrylic resin, but is not limited thereto.

The reinforcing member 600 may be formed of a cured resin material that has undergone a curing process after coating the resin. When an ultraviolet curable resin is used as the resin, it can be cured by UV curing. The reinforcing member 600 may be made of various materials, and is not limited to the materials described herein.

Since the reinforcing member 600 may cover various signal wires disposed between the encapsulation part 130 of the display panel 100 and the pad part PAD, moisture penetrates into the signal wires while protecting the signal wires from external impact. that can be prevented

Since components other than the display substrate 110 and signal wires may be deleted from the bending portion BND to increase flexibility of the display panel 100, the reinforcing member 600 may include the bending portion from which other components are deleted ( BND) can supplement the rigidity.

A cushion layer 330 may be extended and disposed in an outer region below the front portion FP, which is an inner portion of the bending portion BND.

Since the cushion layer 330 may be formed of a flexible material such as foam tape or foam pad, it may be disposed over the entire area of the bending part BND along the bent shape of the bending part BND. there is. The cushion layer 330 may extend along the lower surface of the bending portion BND. For example, the adhesive layer 340 and the cushion layer 330 are formed flat in the Y-axis direction in the area of the front part FP where the front part FP is located, and the cushion layer 330 in the area of the bending part BND. ) may be bent in an upward direction (Z-axis) so as to extend and pass the side surface of the adhesive layer 340. The cushion layer 340 may extend upward to a portion contacting the bending portion BND, and may extend along a lower surface of the bending portion BND from the contact portion. For example, the cushion layer 340 may extend downward (-Z axis) along the curvature of the lower surface of the bending portion BND.

The side end of the cushion layer 330 extending in the bending portion BND region may contact and be fixed to the side surface of the second plate 220 or the side surface of the second connection member 400 . For example, in the bending part (BND) region, one end of the cushion layer 330 is fixed to the adhesive layer 340, and the other end of the cushion layer 330 is the side surface of the second plate 220 or the second connecting member 400. ), the cushion layer 330 may be fixed to have elasticity while maintaining a curvature in the bending portion BND region.

Since the cushion layer 330 is formed of a material that has elasticity and can absorb shock, it can protect the bending portion BND from being deformed or damaged by an external or internal shock. For example, even if an external shock is applied to the bending portion BND, the cushion layer 330 supports the bending portion BND at an inner portion of the bending portion BND, so the cushion layer 330 absorbs the shock and reduces the bending portion BND. The shape can be restored to its original state.

Although the bending part (BND) may be deformed or damaged even by an internal impact caused by a foreign object or part falling off from the inner part of the bending part (BND), the cushion layer 330 extending to the bending part (BND) provides cushioning. Since the layer 230 can directly absorb an impact, deformation or breakage of the bending portion BND can be prevented.

The cushion layer 330 may be spaced apart from the lower surface of the bending part BND by a predetermined interval or may be disposed in contact with each other. When the cushion layer 330 is disposed in contact with the lower surface of the bending portion BND, the shock absorbing function may be further improved.

3 is a cross-sectional view illustrating another embodiment of a display device according to the present specification.

4 is a cross-sectional view showing a detailed structure of an adhesive layer according to the present specification.

Referring to FIGS. 3 and 4 , the adhesive layer 340 and the cushion layer 330 of the cushion plate 300 may extend in an area of the bend portion BND of the display panel 100 .

When only the cushion layer 330 extends to the bending portion BND, the shape of the cushion layer 330 extending to the bending portion BND may change over time, and to prevent this, the adhesive layer 340 may be extended to the bending portion BND.

The adhesive layer 340 may include a base substrate 341 and a first layer 342a and a second layer 342b disposed on both sides or both sides of the base substrate 341 .

The first layer 342a of the adhesive layer 340 may have a plurality of embossed layers 342e having a concavo-convex structure. For example, the embossed layer 342e may be an embossed pattern or an embossed pattern layer, but is not limited thereto.

At least one of the first layer 342a, the second layer 342b, and the embossed layer 342e may be made of a material having an adhesive component. For example, all of the first layer 342a, the second layer 342b, and the embossing layer 342e may be made of a material having an adhesive component.

The first layer 342a of the adhesive layer 340 may be a surface in contact with the first plate 210 and the bending portion BND, and when the first layer 342a has the embossed layer 342e, Since bubbles are prevented from being generated between the first plate 210 and the third plate 200, a defoaming process for removing bubbles may be omitted.

The base substrate 341 may serve to hold the shape of the adhesive layer 340 and may be made of a material having constant strength and hardness so as to maintain the shape of the base substrate 341 . For example, the base substrate 341 may be made of a material such as polyethylene terephthalate (PET), but is not limited thereto.

The second layer 342b may contact the cushion layer 330 . For example, the second layer 342b may be fixed by bonding the cushion layer 330 to the adhesive layer 340 .

The first layer 342a and the embossing layer 342e of the adhesive layer 340 extending toward the bending portion BND are attached to the lower surface of the bending portion BND, and the second layer 342b is attached to the bending portion (BND). BND), the cushion layer 330 may be adhered to and fixed to the lower surface of the bending portion BND. For example, the cushion layer 340 and the adhesive layer 340 may extend along the lower surface of the bending portion BND.

The base substrate 341 of the adhesive layer 340 may serve to hold the shape of the cushion layer 330 as well as the adhesive layer 340, and the cushion layer 330 extended to the bending portion BND over time. The shape of can be maintained without changing. In addition, since the cushion layer 330 is not disposed apart from the bending part BND and is directly in contact with the lower surface of the bending part BND, the shock absorbing function can be further improved.

Since the adhesive materials of the first layer 342a and the second layer 342b of the adhesive layer 340 also have a certain level of shock absorbing function, the cushion layer 330 and the adhesive layer 340 have a double bending portion (BND) In the case of supporting the cushion layer 330 alone, the impact absorbing effect may be further improved than that of a structure supported only.

The ends of the cushion layer 330 and the adhesive layer 340 are bent toward the upper direction (Z-axis) at the bending part BND, or the second connection member 400 or the second connecting member 400 disposed at the pad part PAD. It may be disposed on the side of the plate 220 .

When the ends of the cushion layer 330 and the adhesive layer 340 are disposed on the side of the second connecting member 400 or the second plate 220, the ends of the cushion layer 330 and the adhesive layer 340 are connected to the second connection. Since it can be additionally supported by the member 400 or the second plate 220, the fixing force of the cushion layer 330 and the adhesive layer 340 can be further improved.

5 is a cross-sectional view illustrating another embodiment of a display device according to the present specification.

Referring to FIG. 5 , the cushion layer 330 and the adhesive layer 340 of the third plate 300 extend to the bending portion BND of the display panel 100, and the adhesive layer 340 extends to the pad portion PAD. It may be further extended and disposed. For example, the cushion layer 340 and the adhesive layer 340 may extend along the lower surface of the bending portion BND, and the cushion layer 340 may additionally extend along the lower surface of the heat dissipation layer 310 .

When the adhesive layer 340 and the cushion layer 330 extend to the bending portion BND, the adhesive layer 340 plays a role of holding the shape of the cushion layer 330, and even over time, the bending portion BND The shape of the extended cushion layer 330 may be maintained without being changed. In addition, since the cushion layer 330 may be placed in contact with the lower surface of the bending portion BND, the shock absorbing function may be further improved.

Additionally, the adhesive layer 340 may extend to the pad portion PAD. For example, since the heat dissipation layer 310 is disposed above the adhesive layer 340 extending to the pad portion PAD and the second plate 220 is disposed below, the adhesive layer ( 340) may be disposed at the same location as the location of the second connecting member.

In addition, the adhesive layer 340 may be a double-sided tape having adhesive strength similar to that of the second connecting member, and since the second plate 220 and the heat dissipation layer 310 may be attached and fixed, it may serve as the second connecting member. can

Since one end of the adhesive layer 340 is fixed by the first plate 210 and the cushion layer 330, and the other end of the adhesive layer 340 is fixed by the second plate 220 and the heat radiation layer 310, the adhesive layer The fixing force of the adhesive layer 340 of the bending portion BND, which is the middle portion of 340, can be further improved.

The cushion layer 330 may or may not be partially disposed in the pad portion (PAD) region, and an end of the cushion layer 330 may contact the side surface of the heat dissipation layer 310 or the anti-lifting layer 320, or be spaced a certain distance apart. can be fixed in a fixed state.

When the end of the cushion layer 330 contacts the side surface of the heat dissipation layer 310 or the anti-lifting layer 320, the end of the cushion layer 330 is additionally supported by the heat dissipation layer 310 or the anti-lifting layer 320. As a result, the fixing force can be further improved.

6 is a cross-sectional view illustrating another embodiment of a display device according to the present specification.

Referring to FIG. 6 , the cushion layer 330 and the adhesive layer 340 of the third plate 300 may be disposed to extend from the bending portion BND and pad portion PAD of the display panel 100 . For example, the cushion layer 340 and the adhesive layer 340 may extend along the lower surface of the bending portion BND and may extend along the lower surface of the heat radiation layer 310 .

When the adhesive layer 340 and the cushion layer 330 extend to the bending portion BND, the adhesive layer 340 plays a role of holding the shape of the cushion layer 330, and even over time, the bending portion BND The shape of the extended cushion layer 330 may be maintained without being changed. In addition, when the adhesive layer 340 and the cushion layer 330 are placed in contact with the lower surface of the bending portion BND, the shock absorption function of the display device 10 can be further improved.

When the adhesive layer 340 and the cushion layer 330 extend from the pad portion PAD and are disposed between the heat dissipation layer 310 and the second plate 220, the overall thickness of the display device 10 may increase. However, since the second connection member can be removed, the overall thickness of the display device may not increase. In addition, the cushion layer 330 is disposed in two layers to more effectively absorb shock applied to the display device 10 .

One end of the adhesive layer 340 and the cushion layer 330 is fixed by the first plate 210 and the lifting prevention layer 320, and the other end of the adhesive layer 340 and the cushion layer 330 is connected to the second plate 220. Since they are fixed by the heat dissipation layer 310, the fixing force of the adhesive layer 340 and the cushion layer 330 in the bending portion (BND) region, which is an intermediate portion between the adhesive layer 340 and the cushion layer 330, can be further improved. there is.

7 is a cross-sectional view illustrating another embodiment of a display device according to the present specification.

Referring to FIG. 7 , the reinforcing member disposed on the outer portion of the upper surface of the bending portion BND may extend to the bending portion BND of the adhesive layer 340 and the cushion layer 330 . The upper surface of the bent portion of the display panel 100 is exposed to the outside, and the structure of the display device 10 can be further simplified.

The reinforcing member bends the bending part (BND) of the display panel 100 and then coats the upper surface of the bending part (BND) with resin in order to prevent moisture from penetrating into the signal line while protecting the signal line from external impact. can be configured. In the case of a structure in which the cushion layer 330 and the adhesive layer 340 are extended to the bending portion BND, a sufficient shock absorbing function can be obtained even without a reinforcing member, so that the reinforcing member can be deleted.

A protective layer may be further formed on the bent portion BND of the display panel 100 to prevent moisture from penetrating into the bending portion BND and to protect signal lines. The protective layer is formed by extending some or all of the organic material layer and the inorganic material layer constituting the encapsulation unit 130 to the bending part BND, or by extending the first connection member 150 to the bending part BND. can form In another embodiment, it may be formed by coating a separate organic material layer, but is not limited thereto.

Although the configuration of the adhesive layer 340 is shown as one in the drawings according to each embodiment of the present specification, in order to adhere each component in an area where the adhesive layer 340 is not displayed, a material having an adhesive component may be further disposed. there is.

A display device according to the present specification can be described as follows.

A display device according to the present specification includes a display panel including a front portion, which is an area where an image is displayed, a bending portion extending from the front portion, and a pad portion extending from the bending portion and disposed below the front portion, and between the front portion and the pad portion. It may include a first plate disposed on the first plate, and a cushion plate disposed between the front portion and the pad portion and including a heat dissipation layer, a cushion layer, and an adhesive layer. The cushion layer may extend in the region of the bending portion.

According to some embodiments of the present specification, the cushion layer may extend along the lower surface of the bending portion.

According to some embodiments of the present specification, a connection member and a second plate disposed between the heat dissipation layer and the pad portion may be further included.

According to some embodiments of the present specification, the adhesive layer may extend to the bent portion.

According to some embodiments of the present specification, the adhesive layer may include a base substrate, a first layer disposed on top of the base substrate, a second layer disposed below the base substrate, and an embossed pattern disposed on the first layer. there is.

A display device according to the present specification includes a display panel having a front portion, which is an area where an image is displayed, a bending portion extending from the front portion, and a pad portion extending from the bending portion and disposed below the front portion, and between the front portion and the pad portion. A first plate is disposed, and a cushion plate is disposed between the front portion and the pad portion, and includes a heat dissipation layer, a cushion layer, and an adhesive layer, wherein the cushion layer and the adhesive layer extend in an area of the bending portion, and the adhesive layer extends in an area of the pad portion. can be extended to

According to some embodiments of the present specification, a second plate disposed between the adhesive layer and the pad part may be further included.

According to some embodiments of the present specification, an upper surface of the bending portion may be exposed to the outside.

According to some embodiments of the present specification, the cushion layer and the adhesive layer may extend along the lower surface of the bending portion.

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and may be variously modified and implemented 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 idea of the present invention, but to explain, and the scope of the technical idea 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 protection scope of the present invention should be construed according to the claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: display device 20: cover member
21: light blocking unit 100: display panel
110: display substrate 120: pixel array unit
130: encapsulation 140: polarizer
150: first connecting member 160: driving unit
210: first plate 220: second plate
300: third plate 310: heat dissipation layer
320: lifting prevention layer 330: cushion layer
340: adhesive layer 340: adhesive layer
341: base substrate 342a: first layer
342b: second layer 342e: embossed layer
400: second connecting member 500: flexible circuit board
600: reinforcing member AA: display area
NA: non-display area FP: front
BND: bending part PAD: pad part

Claims (15)

a display panel including a front portion that is an area where an image is displayed, a bending portion extending from the front portion, and a pad portion extending from the bending portion and disposed below the front portion;
a first plate disposed between the front part and the pad part; and
A second plate disposed between the front portion and the pad portion and including a heat dissipation layer, a cushion layer, and an adhesive layer,
The cushion layer extends to the bending portion, the display device. According to claim 1,
The cushion layer extends along the lower surface of the bending portion, the display device. According to claim 1,
The display device further comprises a connection member and a third plate disposed between the heat dissipation layer and the pad part. According to claim 3,
Ends of the cushion layer and the adhesive layer are disposed on side surfaces of the connection member or the third plate. According to claim 1,
The display device of claim 1 , wherein the adhesive layer extends into the bending portion and is disposed. According to claim 1,
The adhesive layer,
base substrate;
a first layer disposed on top of the base substrate;
a second layer disposed under the base substrate; and
A display device comprising an embossing layer disposed on the first layer. According to claim 1,
A display substrate is further disposed on the first plate,
The cushion layer and the adhesive layer are disposed along the display substrate. a display panel including a front portion on which an image is displayed, a bending portion extending from the front portion, and a pad portion extending from the bending portion and disposed below the front portion;
a first plate disposed between the front part and the pad part; and
A second plate disposed between the front portion and the pad portion and including a heat dissipation layer, a cushion layer, and an adhesive layer,
The cushion layer extends to the bending portion, and the adhesive layer extends to the bending portion and the pad portion. According to claim 8,
The display device further comprises a third plate disposed between the adhesive layer and the pad part. According to claim 8,
The cushion layer is between the adhesive layer and the third plate, the display device, According to claim 8,
Ends of the cushion layer and the adhesive layer are disposed on a side surface of the third plate. According to claim 8,
The adhesive layer is
base substrate;
a first layer disposed on top of the base substrate;
a second layer disposed under the base substrate; and
A display device comprising an embossing layer disposed on the first layer. According to claim 8,
An upper surface of the bending portion is exposed to the outside. According to claim 8,
A display substrate is further disposed on the first plate,
The cushion layer and the adhesive layer are disposed along the display substrate. According to claim 5 or 8,
The cushion layer and the adhesive layer extend along the lower surface of the bending portion.

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