KR102489830B1 - Display device - Google Patents

Abstract

Embodiments of the present invention relate to a display device, and more particularly, include a rigid member disposed below a display panel and a support member disposed below the rigid member, wherein the display panel and the rigid member are regions corresponding to a bending region. When the display panel and the rigid member are bent, the support member is separated based on a bending reference line in the bending region, and an adhesion reducing member is positioned between the rigid member and the support member in the bending region and is adjacent to the bending region. A display device having an adhesive member positioned between a rigid member and a support member in a non-bending region. According to the embodiments of the present invention, image quality of a display device can be improved.

Description

Display device {DISPLAY DEVICE}

The present invention relates to a display device.

As the information society develops, the demand for display devices for displaying images is increasing in various forms, and in recent years, liquid crystal displays (LCDs), plasma displays (PDPs), organic light emitting devices Various display devices such as organic light emitting diode display devices (OLEDs) are being utilized.

Such a display device is applied to various fields such as a TV (Television), an automobile display, and a wearable device as well as mobile devices such as smart phones and tablet PCs. In order to be applied to various fields, structural transformation is required.

Recently, a display device capable of being bent has been in the limelight. In the bendable display device, elements constituting the display device must be able to be bent or folded.

The aforementioned bendable or foldable display device requires a display panel and an adhesive layer to couple mechanisms supporting or protecting the display panel below the display panel. In addition, the adhesive layer should also be able to be bent or folded.

However, when the display device is bent, stress is applied to the adhesive layer by an external force, causing the surface of the adhesive layer to become uneven. In this case, the display panel disposed on the adhesive layer is also affected. Specifically, the surface of the display panel is also finely uneven along the uneven adhesive layer surface, causing a problem in that the color of the screen looks different depending on the viewing angle.

In addition, a plurality of adhesive layers are used to couple devices disposed under the display panel, so that the thickness of the display device becomes thick. When the thickness of the display device becomes thick, the force required to bend the display device increases, and excessive force is applied to the components to be bent, resulting in cracks.

In addition, among the devices included in the display device, a device having a property that is difficult to bend or fold may prevent the display device from being bent.

Against this background, an object of embodiments of the present invention is to provide a display device having a structure capable of preventing different screen colors depending on a viewing angle in a bendable display device.

Another object of the embodiments of the present invention is to provide a display device having a structure capable of reducing the thickness of a bendable display device.

Another object of the embodiments of the present invention is to provide a display device having a structure in which a support member, which is a mechanism disposed under a display panel in a bendable display device, does not interfere with bending of the display device.

In one aspect, in a display device according to embodiments of the present invention, a display panel having a bending area having a bending reference line and a non-bending area adjacent to the bending area, a rigid member disposed under the display panel, and a rigid member. It includes a support member disposed below, the display panel and the rigid member are bendable at a portion corresponding to the bending area, and the support member is separated based on a bending reference line within the bending area when bending the display panel and the rigid member. , In the bending area, an adhesion reducing member is positioned between the rigid member and the supporting member, and in a non-bending area adjacent to the bending area, an adhesive member is positioned between the rigid member and the supporting member.

In such a display device, the adhesive member may be disposed to correspond to at least one edge of the non-bending area or may be disposed within the non-bending area.

Also, the adhesive member and the adhesive reducing member may be positioned on the same layer, and the adhesive member and the adhesive reducing member may have corresponding heights.

In another aspect, in a display device according to embodiments of the present invention, a display panel having a bending area with a bending reference line and a non-bending area adjacent to the bending area, a rigid member disposed under the display panel, and the rigid member It includes a support member disposed below, the display panel and the rigid member are bendable at a portion corresponding to the bending area, and the support member is separated based on a bending reference line within the bending area when bending the display panel and the rigid member. , An adhesive member is disposed between the rigid member and the support member, and the adhesive strength of a portion corresponding to the bending area and the adhesive strength of a portion corresponding to the non-bending area of the adhesive member may be different from each other.

In another aspect, in a display device according to embodiments of the present invention, a display panel having a bending area with a bending reference line and a non-bending area adjacent to the bending area, a rigid member disposed under the display panel, and a rigid member. It includes a support member disposed below the member, the display panel and the rigid member are bendable at a portion corresponding to the bending area, and the support member is separated based on a bending reference line within the bending area when bending the display panel and the rigid member. An adhesive member is disposed between the rigid member and the support member, and the adhesive force of the portion corresponding to the bending region and the hardness of the portion corresponding to the non-bending region of the adhesive member may be different from each other.

According to the embodiments of the present invention described above, it is possible to provide a display device having a structure capable of preventing different screen colors depending on a viewing angle in a bendable display device.

According to embodiments of the present invention, a display device having a structure capable of reducing a thickness of a bendable display device may be provided.

According to embodiments of the present invention, a display device having a structure in which a supporting member, which is a mechanism disposed under a display panel in a bendable display device, does not interfere with bending of the display device can be provided.

1 is a perspective view schematically illustrating a display device according to embodiments of the present invention.
2 is a schematic cross-sectional view of a display device according to example embodiments.
3 is a diagram illustrating a state in which a display device according to embodiments of the present invention is bent in one direction.
4 is a cross-sectional view showing the structure of a display device according to embodiments of the present invention in detail.
5 is a view showing an embodiment for making an adhesion reducing member located in a bending area.
6 is a cross-sectional view showing a structure of a display device according to other exemplary embodiments of the present invention in detail.
7 is a perspective view illustrating an adhesive member and an adhesive reducing member according to embodiments of the present invention.
FIG. 8 is a diagram illustrating the tendency of adhesive force for each region when an adhesive member and an adhesive reducing member according to embodiments of the present invention are used.
9 is a view illustrating an adhesive member and an adhesive reducing member according to other embodiments of the present invention.
10 is a cross-sectional view of FIG. 9 taken along AB.
11 is a view illustrating an adhesive member and an adhesive reducing member according to still other embodiments of the present invention.
12 is a cross-sectional view taken along CD of FIG. 11;
13 to 15 are views illustrating various positions of a first adhesive member according to embodiments of the present invention.
FIG. 16 is a cross-sectional view taken along line EF of FIG. 15 .
17 is a view showing an embodiment in which adhesive members of the present invention are asymmetrically disposed with respect to a bending area.
18 is a diagram schematically illustrating a display device according to another exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention are described in detail below with reference to exemplary drawings. In adding reference numerals to components of each drawing, the same components may have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description may be omitted.

Also, terms such as first, second, A, B, (a), and (b) may be used in describing the components of the present invention. These terms are only used to distinguish the component from other components, and the nature, sequence, order, or number of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, that element is or may be directly connected to that other element, but intervenes between each element. It will be understood that may be "interposed", or each component may be "connected", "coupled" or "connected" through other components.

When an element or layer is referred to as “on” or “on” another element or layer, it includes both cases where another element or layer is intervening as well as directly on another element or layer. do. On the other hand, when an element is referred to as “directly on” or “directly on”, it indicates that no other element or layer is intervening.

The spatially relative terms "below, beneath", "lower", "above", "upper", etc., refer to one element or component as shown in the drawing. It can be used to easily describe the correlation between and other elements or components. Spatially relative terms should be understood as terms that include different orientations of elements in use or operation in addition to the directions shown in the figures. For example, when flipping elements shown in the figures, elements described as “below” or “beneath” other elements may be placed “above” the other elements. Thus, the exemplary term “below” may include directions both below and above.

Also, terms such as first, second, A, B, (a), and (b) may be used in describing the components of the present invention. These terms are only used to distinguish the component from other components, and the nature, sequence, order, or number of the corresponding component is not limited by the term.

1 is a perspective view schematically illustrating a display device according to embodiments of the present invention.

Referring to FIG. 1 , a display device 100 according to example embodiments includes at least one bending area BA and at least two non-bending areas NBA1 and NBA2 .

The display device 100 according to embodiments of the present invention may be a display device 100 that can be stably driven even when bent by an external force.

Meanwhile, in FIG. 1, the display device 100 according to the embodiments of the present invention shows a bendable display device 100 configuration, but this is only an example, and the display device according to the embodiments of the present invention ( 100) may be various display devices 100 such as a foldable display device, a curved display device, a rollable display device, and a flexible display device.

Also, bending the display device 100 according to embodiments of the present invention may include all meanings of bending or folding the display device 100 .

Although not separately illustrated, the display device 100 according to the present invention can be used in a large electronic device such as a television or an external billboard, as well as a mobile phone, a personal computer, a notebook computer, a personal digital terminal, a car navigation unit, a game machine, a portable electronic device, It can be used for small and medium-sized electronic devices such as wristwatch type electronic devices and cameras.

As shown in FIG. 1 , the display surface IM on which an image is displayed is parallel to the first and second directions DR1 and DR2 . The normal direction of the display surface is parallel to the third direction DR3. That is, the third direction DR3 is perpendicular to the first and second directions DR1 and DR2. The third direction DR3 may indicate the thickness direction of the display device 100 . Front and rear surfaces of each member may be divided by a third direction DR3.

Also, the display device 100 according to embodiments of the present invention includes a plurality of divided areas on the display surface. The display device 100 may be divided into a display area (AA, or may be referred to as an active area) and a non-display area (NA, or may be referred to as a non-active area) depending on whether the corresponding area displays an image. there is.

The display device 100 displays an image through the display area AA. The non-display area NA does not display an image. A driver and/or wires for driving the display area AA may be disposed in the non-display area NA. The non-display area NA may surround the display area AA.

The display device 100 may be divided into a bending area BA that bends according to an applied external force, a first non-bending area NBA1 and a second non-bending area NBA2 that does not bend according to the applied external force. The bending area BA may be positioned between the first and second non-bending areas NBA1 and NBA2 .

For example, the bending area BA may be bent based on the bending reference line BL parallel to the second direction DR2 .

2 is a schematic cross-sectional view of a display device according to example embodiments.

Referring to FIG. 2 , a display device 100 according to embodiments of the present invention includes a display panel 210, a rigid member 220 disposed below the display panel 210, and a rigid member 220 disposed below. A support member 240 is included.

The display panel 210 and the rigid member 220 can be bent in the bending area BA, and the support member 240 has a bending reference in the bending area BA when the display panel and the rigid member 220 are bent. It can be separated by line. The support member 240 includes a first support member 241 and a second support member 242 that can be separated from each other.

In addition, the adhesion reducing member 233 and the adhesive member 230 are positioned between the rigid member 220 and the support member 240 in the bending area BA and the non-bending areas NBA1 and NBA2 . Specifically, in the bending area BA, the adhesion reducing member 233 is positioned between the rigid member 220 and the support member 240, and in the non-bending areas NBA1 and NBA2, the rigid member 220 and the support member ( 240, the adhesive member 230 is positioned between them.

At this time, the adhesion reducing member 233 may extend in a direction away from the bending reference line and may be positioned between the rigid member 220 and the support member in correspondence to the non-bending areas NBA1 and NBA2 .

The display panel 210 is configured to display an image, and may be a liquid crystal display panel, an organic light emitting display panel, an electrophoretic display panel, or the like, and the type is not limited.

The rigid member 220 may serve to support the display panel 210 . Also, the support member 240 may serve to support the display panel 210 and the rigid member 220 when the display device 100 is in a bent state.

All of the display panel 210, the rigid member 220, and the adhesion reducing member 233 may be bent based on the bending reference line BL.

To this end, the display panel 210 may include at least one organic substrate, and the thickness of the display panel 210 may be thin.

Also, the rigid member 220 may be made of plastic or metal, but the present invention is not limited thereto.

The display panel 210 and the rigid member 220 may be thin to be easily bent or folded.

The support member 240 may be made of plastic or metal, but the present invention is not limited thereto. That is, the support member 240 of the present invention is sufficient to be made of a material capable of stably supporting the display panel 210 and the rigid member 220 .

The adhesive member 230 may have a different adhesive strength from a portion corresponding to the bending area BA and a different adhesive strength from portions corresponding to the first and second non-bending areas NBA1 and NBA2 . For example, the adhesive strength of the adhesive member 230 corresponding to the first and second non-bending areas NBA1 and NBA2 may be smaller than the adhesive strength of the adhesive member 230 corresponding to the bending area BA.

In the first and second non-bending areas NBA1 and NBA2 , the support member 240 may be firmly coupled to other components through the adhesive member 230 . Also, in the bending area BA, the support member 230 may not be attached to the adhesive member 230 or may be attached with very weak adhesive force.

Meanwhile, as shown in FIG. 2 , when the display device 100 has one bending reference line BL, when the display device 100 is bent, the support member 240 moves along the bending reference line BL as a reference. It can be separated into two support members (241, 242).

A bent shape of a display device according to embodiments of the present invention will be reviewed in detail with reference to FIG. 3 as follows.

3 is a diagram illustrating a state in which a display device according to embodiments of the present invention is bent in one direction.

Referring to FIG. 3 , the display device 100 according to example embodiments may be bent or folded around a bending reference line BL in a bending area BA.

In the display device 100, the first non-bending area NBA1 is positioned on one side of the bending area BA, and the second non-bending area NBA2 is positioned on the other side of the bending area BA, respectively. . Also, the bending area BA may be divided into a first area BA1 and a second area BA2 based on the bending reference line BL.

Meanwhile, although FIG. 3 shows a configuration in which the display surfaces IM of the display panel 210 are bent to be located inside the display device 100 in a bent state, this is only an example, and the display surfaces IM are not included in the display device. It may also be bent to be exposed in the outer direction of (100).

In addition, as shown in FIG. 3 , when the display device 100 is in a bent state, the first support member 241 of the support member 240 is the same as the first area BA1 of the bending area BA. It is positioned to correspond to 1 non-bending area NBA1, and the second support member 242 may be positioned to correspond to the second area BA2 of the bending area BA and the second non-bending area NBA2.

In this way, the first and second support members 241 and 242 may be separated from each other, and the first and second support members 241 and 242 may not be disposed in all or part of the area where the display device 100 is bent. It can be.

Also, when the display panel 210 and the rigid member 220 are bent, the first support member 241 is spaced apart from all or part of the first area BA1 of the bending area BA, and the second support member ( 242) may be spaced apart from all or part of the second area BA2 of the bending area BA.

In this case, the first and second support members 241 and 242 prevent the display panel 210 and the rigid member 220 from being twisted due to stress when the display device 100 is in a bent state. can

In addition, since the support member 240 is not attached to the adhesive member 230 in the bending area BA or is attached to the adhesive member 230 with very weak adhesive force, when the display device 100 is bent, the support member 240 does not adhere to the bending area BA. It may be separated into first and second support members 241 and 242 based on the bending reference line BL.

In addition, the first and second support members 241 and 242 are relatively thicker than the display panel 210 and the rigid member 220 in order to stably support components such as the display panel 210 and the rigid member 220 . may be made thick.

Meanwhile, in order to bend the display device 100, an external force must be applied to the display device 100, and the thicker the display device 100, the greater the force required to bend or fold it. Therefore, when bending the display device 100 to the support member 240, a force greater than that required to bend only the display panel 210 and the rigid member 220 must be applied.

However, a plurality of elements exist in the display panel, and when excessive force is applied, breakage of elements included in the display panel may occur.

Since the support member 240 of the display device 100 according to the exemplary embodiments is not adhered to the adhesive member 230 in the bending area BA or is adhered with a very weak adhesive force, when the display device 100 is bent, may be spaced apart from all or part of the adhesive member 230 located in the bending area BA. Through this structure, the support member 240 may not be included in the bent configuration.

The support member 240 is fixed to the rigid member 220 through the adhesive member 230 provided in the first and second non-bending areas NBA1 and NBA2, and when the display device 100 is bent, the rigid member ( 220) and the display panel 210 are supported.

Therefore, the display device 100 can be bent without worrying about damage to the elements provided in the display panel 210, and the bent components (display panel and rigid member) are stably supported when the display device 100 is bent. can do.

Subsequently, the structure of the display device according to the exemplary embodiments of the present invention will be reviewed in detail with reference to FIG. 4 .

4 is a cross-sectional view showing the structure of a display device according to embodiments of the present invention in detail.

Referring to FIG. 4 , the display device 100 includes a cover window 450 disposed on the display panel 210 . A rigid member 210 is disposed under the display panel 210 , and an adhesive 460 and a film layer 270 are disposed under the rigid member 210 . A support member 240 including first and second support members 241 and 242 is disposed below the film layer 270 .

In addition, the adhesive member 230 is positioned between the rigid member 220 and the support member 240 in the bending area BA and the non-bending areas NBA1 and NBA2 adjacent to the bending area BA.

The cover window 450 may serve to protect the display panel 210 from being broken by an external impact.

The rigid member 220 may serve to support the display panel 210 and dissipate heat transferred from the display panel 210, and may have a portion corresponding to the bending area BA and first and second non-bending areas. Parts corresponding to (NBA1, NBA2) may have different surfaces.

For example, the rigid member 220 may have at least one groove 421 in the bending area BA. At least one groove 421 may serve to facilitate bending of the rigid member 220 when the display device 100 is bent.

The film layer 270 may keep the adhesive member 260 flat. When the flatness of the adhesive member 260 is poor, the thickness of the adhesive member 260 may vary for each region. In this case, since the flatness of the display panel 210 disposed on the adhesive member 260 also deteriorates, a defect in that the screen looks different depending on the viewing angle may occur.

The adhesive member 230 allows the first and second support members 241 and 242 to be separated when the display device 100 is bent in the bending area BA.

The adhesive member 230 may be made by a process of irradiating light to the adhesive member 230 in an area corresponding to the bending area BA.

A method of making the adhesive member 230 will be reviewed in detail with reference to FIG. 5 as follows.

5 is a view showing an embodiment for making an adhesive member according to embodiments of the present invention.

Referring to FIG. 5 , a photo-curable adhesive material 530 is formed under the film layer 260 . A light blocking tape 580 is attached to the back surface of the photocurable adhesive material 530 .

The light blocking tape 580 may be attached only to the first and second non-bending areas NBA1 and NBA2 excluding the bending area BA. That is, the light blocking tape 280 may be disposed to expose a portion of the rear surface of the photocurable adhesive material 530 in the bending area BA.

Light (eg, ultraviolet rays) is irradiated to all or part of the rear surface of the photocurable adhesive material 530 exposed by the light blocking tape 580 . When the light irradiation is completed, the light blocking tape 580 attached to the back surface of the light curable adhesive material 530 is removed.

At this time, the adhesive force of the photo-curable adhesive material 530 located in the region where light is irradiated to the photo-curable adhesive material 530, ie, the photo-curable adhesive material 530 located in the bending area BA, is reduced or eliminated. In addition, the light-curable adhesive material 530 located in areas where light is not irradiated to the photo-curable adhesive material 530, that is, in the first and second non-bending areas NBA1 and NBA2, has high adhesive strength.

Through this process, the photocurable adhesive material 530 located in the bending area BA reduces or disappears the adhesive force due to light irradiation, and the photocurable adhesive material 530 located in the first and second non-bending areas NBA1 and NBA2 The adhesive material 530 becomes the adhesive member 230 of FIG. 4 with adhesive force remaining as it is.

In the aforementioned adhesive member 230 , the hardness of the portion corresponding to the bending area BA may be different from the hardness of the portion corresponding to the first and second non-bending areas NBA1 and NBA2 . For example, the adhesive member 230 may have a hardness corresponding to the first and second non-bending areas NBA1 and NBA2 smaller than a hardness corresponding to the bending area BA.

Meanwhile, when the display device 100 is bent, a portion corresponding to the bending area BA of the adhesive member 230 may be exposed to the outside. However, since the hardness of the portion corresponding to the bending area BA of the adhesive member 230 and the first and second non-bending areas NBA1 and NBA2 are made different, the bending area BA of the adhesive member 230 Even if a direct impact is applied to the corresponding part, it may not be damaged.

A display device according to embodiments of the present invention may have a structure shown in FIG. 6 as well as the structure shown in FIG. 4 .

6 is a cross-sectional view showing a structure of a display device according to other exemplary embodiments of the present invention in detail. In the description to be described later, overlapping content with the above-described embodiments may be omitted.

Referring to FIG. 6 , the display device 100 includes a cover window 450, a display panel 210, a rigid member 220, an adhesive member 230, an adhesive reducing member 233, and a support member 240. do.

The adhesive member 230 is positioned between the rigid member 220 and the support member 240 in the first and second non-bending areas NBA1 and NBA2 adjacent to the bending area BA. The adhesion reducing member 233 is positioned between the rigid member 220 and the support member 240 in the bending area BA.

Here, the adhesion-reducing member 233 may be made of a soft organic material, but is not limited thereto, and a structure made of a non-adhesive, weak, bendable, or foldable material is sufficient.

As described above, since the adhesion reducing member 233 is located in the bending area BA, the first and second support members 240 are not attached to the adhesion reducing member 233 in the bending area BA, or It can stick with very weak adhesive force.

Therefore, when the display device 100 is bent, the support member 240 is separated from the adhesion reducing member 233 in the bending area BA, so that the display device 100 is not hindered by the support member 240 when bending. may not be

As shown in FIG. 6 , the adhesive member 230 and the adhesive reducing member 233 are located on the same layer. Accordingly, since only one layer is disposed between the rigid member 220 and the support member 240 , the thickness of the display device 100 may be reduced.

As a result, since the force applied to the display device 100 to bend the display device 100 can be reduced, components participating in bending, for example, the display panel 210, the rigid member 220, and the adhesive The force applied to the reducing member 233 is also reduced, so that the probability of occurrence of cracks can be reduced.

Also, the adhesive member 230 and the adhesive reducing member 233 may have corresponding heights. That is, the height T1 of the adhesive member 230 and the height T2 of the adhesion reducing member 233 may be the same.

When the thickness T1 of the adhesive member 230 and the thickness T2 of the adhesion reducing member 233 are different from each other, the adhesive member 230 and the adhesion reducing member 233 are disposed on the display panel 210. curvature may occur. As a result, the screen may look different depending on the viewing angle. That is, image quality of the display device 100 may deteriorate.

However, in the display device 100 according to the present embodiments, the thickness T1 of the adhesive member 230 and the thickness T2 of the adhesive reducing member 233 correspond to each other, so that the viewer can view the screen at any angle within the viewing angle range. , you can see the screen of the same color.

The adhesive member 230 may be a soft organic material having adhesiveness, and the adhesion reducing member 233 may be a soft organic material having no adhesiveness.

For example, the adhesive member 230 may be any one of pressure sensitive adhesive (PSA), optically clear resin (OCR), and optically clear adhesive (OCA), but is limited thereto. not to be,

In addition, the adhesion reducing member 233 may be any one of ABS resin (acrylonitrile butadiene styrene copolymer) including polyethylene terephthalate (PET), but is not limited thereto. The adhesion reducing member 233 of the present invention is a soft organic material without adhesiveness, and the stress generated in the adhesion reducing member 233 by an external force (eg, an external force applied to the adhesion reducing member when bending a display device) A material that does not cause agglomeration or flow even when generated is sufficient.

As such, since the adhesive member 230 positioned in the first and second non-bending areas NBA1 and NBA2 has adhesiveness, the rigid member 220 and the support member 240 can be firmly fixed.

In addition, since the adhesion reducing member 233 positioned in the bending area BA is a soft organic material, when bending the display device 100, it can be bent without cracking. In addition, since there is no adhesiveness, a phenomenon in which the support member 240 sticks to the adhesive reducing member 233 and prevents the display device 100 from being bent does not occur.

The arrangement of the adhesive member 230 and the adhesive reducing member 233 according to embodiments of the present invention and the adhesive force according to the region will be reviewed in detail with reference to FIGS. 7 and 8 .

7 is a perspective view illustrating an adhesive member and an adhesive reducing member according to embodiments of the present invention. FIG. 8 is a diagram illustrating the tendency of adhesive force for each region when an adhesive member and an adhesive reducing member according to embodiments of the present invention are used. In the description to be described later, overlapping content with the above-described embodiments may be omitted.

Referring to FIG. 7 , an adhesion reducing member 233 is positioned in the bending area BA, and an adhesive member 230 is positioned in first and second non-bending areas NBA1 and NBA2 adjacent to the bending area BA. do.

That is, the adhesive member 230 may be located in all areas of the first and second non-bending areas NBA1 and NBA2 . Also, the adhesion reducing member 233 may be located throughout the bending area BA.

Meanwhile, it has been described that the adhesion reducing member 233 is a material that does not cause aggregation or flow even when stress is applied. Since the adhesion reducing member 233 is located throughout the bending area BA, stress on the adhesion reducing member 233 when the display device 100 is bent (for example, when bending the display device, an external force is applied to the adhesion reducing member to cause adhesion Even if stress acting in the reducing member) occurs, the thickness change does not occur.

When stress is generated in the adhesion-reducing member 233 and aggregation or flow occurs, the material of the adhesion-reducing member 233 is pushed to another area in the area where the stress is high, and the thickness is reduced, and in the area where the stress is low, the adhesion-reducing member The material of (233) may be agglomerated and the thickness may be increased. That is, the adhesion reducing member 233 may have a different thickness for each region.

As a result, the surface of the display panel 210 positioned on the adhesion reducing member 233 may become wavy, and thus image quality may deteriorate.

However, even when stress is generated in the adhesion reducing member 233 according to the present invention, it is made of a material that does not cause clumping or flow, and the adhesion reducing member 233 exerts the greatest external force when bending the display device 100. By being located in the entire bending area BA, there is an effect of improving image quality of the display device 100 .

In addition, as shown in FIG. 8 , in the first and second non-bending areas NBA1 and NBA2 where the adhesive member 230 according to embodiments of the present invention is located, the adhesive member 230 is positioned so that the adhesive strength is high. appear.

However, there may be no adhesive force in the bending area BA where the adhesion reducing member 233 is located.

The adhesive member and the adhesive reducing member of the present invention include, but are not limited to, the form shown in FIG. 7 . 9 to 17 illustrate an adhesive member and an adhesive reducing member according to various embodiments of the present invention. In the description to be described later, overlapping content with the above-described embodiments may be omitted.

9 is a view illustrating an adhesive member and an adhesive reducing member according to other embodiments of the present invention.

Referring to FIG. 9 , a plurality of adhesive members 230 are disposed in portions of the first and second non-bending areas NBA1 and NBA2 . Also, the adhesion reducing member 233 is disposed in the bending area BA and parts of the first and second non-bending areas NBA1 and NBA2. That is, the adhesion reducing member 233 of FIG. 9 may also be positioned between the rigid member 220 and the support member 240 .

Although FIG. 9 shows a configuration in which the plurality of adhesive members 230 are arranged in a line in the first and second non-bending areas NBA1 and NBA2, the present invention is not limited thereto, and the plurality of adhesive members 230 It can be arranged in various ways, such as being arranged in a zigzag pattern.

The plurality of adhesive members 230 may be spaced apart from each other. The plurality of adhesive members 230 may be spaced apart from each other and arranged to have uniform intervals, but the present invention is not limited thereto.

In this case, the adhesion reducing member 233 may surround the adhesion member 230 .

As such, since the plurality of adhesive members 230 are spaced apart from each other, it is possible to prevent a difference in thickness between regions of the plurality of adhesive members 230 from occurring.

The above effect will be described with reference to FIG. 10 .

10 is a cross-sectional view of FIG. 9 taken along line A-B.

Referring to FIG. 10 , the adhesion reducing member 233 is disposed in the bending area BA and parts of the first and second non-bending areas NBA1 and NBA2, and the first and second non-bending areas NBA1 and NBA2. ) The adhesive member 230 is disposed on a part of.

The adhesive member 230 may be inserted into a plurality of grooves provided in the adhesive reducing member 233 . Specifically, the adhesion reducing member 233 may have a plurality of grooves in the first and second non-bending areas NBA1 and NBA2 , and the adhesive member 230 may be inserted into the plurality of grooves.

Here, a plurality of grooves may be formed through a process such as punching the adhesion reducing member 233, and the structure of FIG. 10 may be obtained by filling the plurality of grooves with the adhesive member 230.

Meanwhile, when the display device 100 is bent, an external force may also be applied to the first and second non-bending areas NBA1 and NBA2 (excluding areas adjacent to both boundary areas of the bending area). Here, the vicinity of both edges of the bending area BA means the boundary between the bending area BA and the first and second non-bending areas NBA1 and NBA2 and the first and second non-bending areas NBA1 adjacent to the boundary. , indicates some areas of NBA2).

In the embodiment of the present invention, since the adhesive member 230 is inserted into the groove provided in the adhesion reducing member 233 and trapped, even if stress due to an external force occurs in the adhesive member 230, the material of the adhesive member 230 is different from the area. can't move to

Accordingly, even when the display device 100 is bent, a difference in thickness of the adhesive member 230 for each region may be prevented from occurring.

11 is a view illustrating an adhesive member and an adhesive reducing member according to still other embodiments of the present invention.

Referring to FIG. 11 , the adhesive member 230 includes a first adhesive member 1131 positioned to correspond to at least one edge of the first and second non-bending areas NBA1 and NBA2 , and includes first and second adhesive members 1131 . 2 includes a plurality of second adhesive members 1132 disposed in the non-bending areas NBA1 and NBA2 .

For example, as shown in FIG. 11 , the first adhesive member 1131 may be applied to the edges of the first and second non-bending areas NBA1 and NBA2 except for areas adjacent to both border areas of the bending area BA. It can be arranged to correspond to. That is, the first adhesive member 1131 may be disposed to correspond to the three edges of the first non-bending area NBA1 and the three edges of the second non-bending area NBA2 .

The first adhesive member 1131 is disposed to correspond to at least one edge of the first and second non-bending areas NBA1 and NBA2, and is a rigid member outside the first and second non-bending areas NBA1 and NBA2. 220 and the support member 240 can be firmly fixed. Further, the second adhesive member 1132 is disposed inside the edges of the first and second non-bending areas NBA1 and NBA2, and the rigid member ( 220) and the support member 240 may be firmly fixed.

The adhesion reducing member 233 according to other embodiments of the present invention may be one of a circular shape, an elliptical shape, and a polygonal shape on a plane.

Before coupling the adhesive member 230 and the adhesion reducing member 233 to the lower portion of the rigid member 220, a protective film may be attached to the upper surface of the adhesive member 230 and the adhesion reducing member 233 to protect them. .

In the step of coupling the adhesive member 230 and the adhesive reducing member 233 to the lower portion of the rigid member 220, the protective film needs to be removed. By doing so, the protective film can be easily separated.

Also, the plurality of second adhesive members 1132 may be spaced apart from each other, and the plurality of second adhesive members 1132 may be spaced apart from the first adhesive member 1131 . The plurality of second adhesive members 1132 may be spaced apart from each other and arranged to have uniform intervals, but the present invention is not limited thereto.

The first adhesive member 1131 is located outside the plurality of second adhesive members 1132 . The adhesion reducing member 233 is positioned in the bending area BA. Also, the adhesion reducing member 233 may be located in the first and second non-bending areas NBA1 and NBA2 . That is, the adhesion reducing member 233 of FIG. 11 may also be positioned between the rigid member 220 and the support member 240 .

Specifically, the adhesion reducing member 233 positioned in the first and second non-bending areas NBA1 and NBA2 may be positioned between the second adhesive member 1132 and another adjacent second adhesive member 1132 . Also, it may be positioned between the second adhesive member 1132 and the first adhesive member 1131 .

That is, the adhesive member 230 including the first and second adhesive members 1131 and 1132 may be disposed only in partial areas of the first and second non-bending areas NBA1 and NBA2 .

Through this, even if an external force is applied to the display device, it is possible to prevent a thickness change of the adhesive member 230 from occurring. These effects are examined in detail with reference to FIG. 12 as follows.

12 is a cross-sectional view taken along line C-D of FIG. 11;

Referring to FIG. 12 , an adhesion reducing member 233 is disposed in the bending area BA and parts of the first and second non-bending areas NBA1 and NBA2, and the first and second non-bending areas NBA1 and NBA2. ), the first and second adhesive members 1131 and 1132 are disposed on a portion of.

The first adhesive member 1131 is positioned to correspond to a portion of the edge of the first and second non-bending areas NBA1 and NBA2, and the second adhesive member 1132 in the first and second non-bending areas NBA1 and NBA2. ) is located inside the first adhesive member 1131.

Also, in the first and second non-bending areas NBA1 and NBA2, the adhesion reducing member 233 may be disposed between the first adhesive member 1131 and the second adhesive member 1132 and adjacent to the second adhesive member 1132. It is disposed between the second adhesive members 1132 .

Meanwhile, the first and second adhesive members 1131 and 1132 may be inserted into a plurality of grooves provided in the adhesive reducing member 233 . Specifically, the adhesion reducing member 233 includes a plurality of grooves in the first and second non-bending areas NBA1 and NBA2, and the first adhesive member 1131 or the second adhesive member 1132 is provided in the plurality of grooves. can be inserted.

That is, since the first and second adhesive members 1131 and 1132 are inserted into and confined to the groove provided in the adhesion reducing member 233, even if stress due to an external force is generated in the adhesive member 230, the material of the adhesive member 230 You cannot move to this other area.

Accordingly, even when the display device 100 is bent, a difference in thickness of the adhesive member 230 for each region may be prevented from occurring.

In this case, the width W1 of the first adhesive member 1131 may be greater than the width W2 of the second adhesive member 1132, but is not limited thereto. Also, the widths W2 of the plurality of second adhesive members 1132 may be all the same, but the present invention is not limited thereto and may be made different from each other.

Meanwhile, in FIGS. 11 and 12 , the first adhesive member 1131 is disposed to correspond to the edges of the first and second non-bending areas NBA1 and NBA2 except for the areas adjacent to both border areas of the bending area BA. Although the configuration is shown, the present invention is not limited thereto. When the adhesive member 230 of the present invention includes the first adhesive member 1131, the first adhesive member 1131 is disposed to correspond to at least one edge of the first and second non-bending areas NBA1 and NBA2. configuration is sufficient.

The first adhesive member 1131 according to embodiments of the present invention may be positioned as shown in FIGS. 13 to 15 .

13 to 15 are views illustrating various positions of a first adhesive member according to embodiments of the present invention.

As shown in FIG. 13 , the first adhesive member 1131 according to embodiments of the present invention corresponds to the two edges of the first non-bending area NBA1 and the two edges of the second non-bending area NBA2. can be arranged so that

In addition, as shown in FIG. 14 , the first adhesive member 1131 according to embodiments of the present invention has one edge of the first non-bending area NBA1 and one edge of the second non-bending area NBA2. It can be arranged to correspond to.

Also, as shown in FIG. 15 , the first adhesive member 1131 according to embodiments of the present invention corresponds to the entire edge of the first non-bending area NBA1 and the entire edge of the second non-bending area NBA2. can be arranged so that That is, the first adhesive member 1131 may surround the plurality of second adhesive members 1132 corresponding to all edges of the first and second non-bending areas NBA1 and NBA2 .

Meanwhile, when the display device 100 is bent, components to be bent (except for the support member 240 ) are most stretched near the bending area BA and both boundary areas of the bending area BA. At this time, the first adhesive member 1131 located in an area adjacent to both boundary areas of the adhesion reducing member 233 and the bending area BA has an external force (eg, tension) compared to components located in other areas. ) will receive a lot.

That is, the adhesion reducing member 233 and the first adhesive member 1131 receive the largest external force near the bending area BA and both boundary areas of the bending area BA.

In the present invention, since the first adhesive member 1131 is trapped in the groove provided in the adhesion reducing member 233, even if stress due to an external force occurs in the first adhesive member 1131, the material of the first adhesive member 1131 is different. Can't move to area. Therefore, the thickness of the first adhesive member 1131 located in the area adjacent to both boundary areas of the bending area BA is equal to the thickness of the first and second adhesive members 1131 and 1132 disposed in different areas even when the display device 100 is bent. ) can be kept the same as the thickness.

In addition, since the first adhesive member 1131 is also located in an area adjacent to both boundary areas of the bending area BA, it is attached to the first adhesive member 1131 even in an area that receives the greatest tension when the display device 100 is bent. The support member 240 may be fixed without being separated.

16 is a cross-sectional view taken along line E-F of FIG. 15;

Referring to FIG. 16 , the adhesion reducing member 233 is disposed in the bending area BA and parts of the first and second non-bending areas NBA1 and NBA2, and the first and second non-bending areas NBA1 and NBA2. ), the first and second adhesive members 1131 and 1132 are disposed on a portion of.

In this case, the widths W1 and W3 of the first adhesive member 1131 may be greater than the width W2 of the second adhesive member 1132 .

Also, the width W1 of the first adhesive member 1131 positioned outside the first and second non-bending areas NBA1 and NBA2 is the first adhesive member positioned in an area adjacent to both boundary areas of the bending area BA. It may be different from the width W3 of 1131, but the present invention is not limited thereto. That is, the width of the first adhesive member 1131 according to the present invention may vary depending on the area where it is located.

As described above, in the display device 100 according to embodiments of the present invention, the first adhesive member 1131 is disposed to correspond to at least one edge in the first and second non-bending areas NBA1 and NBA2. Any configuration is sufficient, and the position of the frame is not limited.

Until now, a configuration in which the first and second adhesive members 1131 and 1132 positioned in the first non-bending area NBA1 and the second non-bending area NBA2 are symmetrically disposed with respect to the bending area BA has been described. Although described in the center, the present invention is not limited thereto, and may be arranged asymmetrically as shown in FIGS. 15 and 16 .

17 is a view showing an embodiment in which adhesive members of the present invention are asymmetrically disposed with respect to a bending area.

Referring to FIG. 17 , the first adhesive member 1131 is disposed to correspond to the entire edge of the first non-bending area NBA1, but to correspond to only three of the four edges of the second non-bending area NBA2. A first adhesive member 1131 is disposed.

In addition, the second adhesive member 1132 disposed in the first non-bending area NBA1 may be disposed with a first gap D1 from all other second adhesive members 1132 adjacent to each other in the horizontal and vertical directions. . However, the second adhesive member 1131 disposed in the second non-bending area NBA1 is disposed at a first interval D1 from all other second adhesive members 1132 adjacent to each other in the horizontal direction, but adjacent to each other in the vertical direction. It may be disposed at a first distance D1 from other second adhesive members 1132 or at a second distance D2 different from the first distance D1.

That is, the first and second adhesive members 1131 and 1132 may be asymmetrically disposed in the first and second non-bending areas NBA1 and NBA2 based on the bending area BA.

Meanwhile, the positions of the first and second adhesive members 1131 and 1132 are not limited to those of FIG. 16 , and are disposed in the first and second non-bending areas NBA1 and BNA2 based on the bending area BA in the present embodiment. It is sufficient if at least one of the first adhesive member 1131 and the second adhesive member 1132 is positioned asymmetrically.

In FIGS. 1 to 17 , the configuration of the display device 100 having one bending area BA and two non-bending areas NBA has been described, but the display device according to the exemplary embodiments of the present invention is limited to this. However, it may be a display device having a structure shown in FIG. 18 .

18 is a diagram schematically illustrating a display device according to another exemplary embodiment of the present invention. In the description to be described later, overlapping content with the above-described embodiments may be omitted.

Referring to FIG. 18 , the display device 100 according to still other embodiments of the present invention includes a first bending area BA1 and a second bending area BA2 . Further, the first non-bending area NBA1 and the second non-bending area NBA2 are disposed with the first bending area BA1 interposed therebetween, and the second non-bending area is interposed with the second bending area BA2. (NBA2) and the third non-bending area (NBA3) are disposed.

The first bending area BA1 and the second bending area BA2 may be bent in the same direction or in different directions.

Adhesion reducing members 233 are disposed in the first and second bending areas BA1 and BA2 . In addition, the adhesive member 230 is disposed in the first to third non-bending areas NBA1 , NBA2 , and NBA3 .

Specifically, the adhesion reducing member 233 is positioned between the rigid member 220 and the support member 240 in the first and second bending areas BA1 and BA2, and the first to third non-bending areas NBA1 and NBA2 , NBA3), the adhesive member 230 is positioned between the rigid member 220 and the support member 240 .

Also, the support member 240 according to the embodiment of the present invention may include a first support member 241 , a second support member 242 , and a third support member 1843 .

When the display device 100 is bent in the first and second bending areas BA1 and BA2, the first support member 241 and the second support member 242 are bent in the first bending area BA1. They are separated based on the bending reference line BL1, and the second support member 242 and the third support member 1843 are separated based on the second bending reference line BL2 in the second bending area BA2. can

Meanwhile, in FIG. 18, the display device 100 includes two bending areas BA1 and BA2, but the present invention is not limited thereto, and the display device 100 includes two or more bending areas. Configurations may also be included.

Through this, the display device 100 according to embodiments of the present invention can be bent in one or more bending areas to provide the display device 100 that can be bent at will by the user.

According to the embodiments of the present invention described above, it is possible to provide a display device having a structure capable of improving image quality by preventing different screen colors depending on viewing angles in a bendable display device.

According to embodiments of the present invention, a display device having a structure capable of reducing a thickness of a bendable display device may be provided.

According to embodiments of the present invention, a display device having a structure in which a supporting member, which is a mechanism disposed under a display panel in a bendable display device, does not interfere with bending of the display device may be provided.

The above description and accompanying drawings are merely illustrative of the technical idea of the present invention, and those skilled in the art can combine the configuration within the scope not departing from the essential characteristics of the present invention. , various modifications and variations such as separation, substitution and alteration will be possible.

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. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: display device
210: display panel
220: rigid member
230: adhesive member
233: adhesion reducing member
240: support member

Claims (16)

a display panel including a bending area with a bending reference line and a non-bending area adjacent to the bending area;
a rigid member disposed under the display panel; and
Including a support member disposed under the rigid member,
The rigid member is bendable at a portion corresponding to the bending region,
The support member is separated based on the bending reference line when the rigid member is bent,
Corresponding to the bending region, an adhesion reducing member is positioned between the rigid member and the support member,
In response to the non-bending area, an adhesive member is positioned between the rigid member and the support member.
According to claim 1,
The adhesive member and the adhesive reducing member are positioned on the same layer.
According to claim 1,
The adhesion reducing member extends in a direction away from the bending reference line and is positioned between the rigid member and the support member to correspond to the non-bending area.
According to claim 3,
The adhesion reducing member surrounds the adhesive member.
According to claim 1,
The adhesive member includes a first adhesive member positioned to correspond to at least one edge of the non-bending area.
According to claim 5,
The adhesive member includes a plurality of second adhesive members positioned between the first adhesive member and the adhesion reducing member, corresponding to the non-bending area.
According to claim 6,
The first adhesive member surrounds the plurality of second adhesive members corresponding to all edges of the non-bending area.
According to claim 6,
Each of the plurality of second adhesive members is one of a circular shape, an elliptical shape, and a polygonal shape on a plane.
According to claim 1,
The adhesive member and the adhesive reducing member have corresponding heights.
According to claim 1,
The thickness of the rigid member is smaller than the thickness of the support member.
According to claim 1,
In the rigid member, a portion corresponding to the bending area and a portion corresponding to the non-bending area have different surface shapes.
According to claim 11,
The display device of claim 1 , wherein a plurality of grooves are present on a surface of a portion of the rigid member corresponding to the bending area.
According to claim 1,
The display device of claim 1 , wherein the display panel and the rigid member are bendable in at least two bending areas.
According to claim 1,
The non-bending area includes a first non-bending area and a second non-bending area respectively located on one side and the other side of the bending area,
The support member is
a first support member corresponding to the first region of the bending region and the first non-bending region;
A second support member corresponding to the second region of the bending region and the second non-bending region;
When bending the display panel and the rigid member,
The first support member is spaced apart from all or part of the first region of the bending region,
The second support member is spaced apart from all or part of the second region of the bending region.
a display panel including a bending area with a bending reference line and a non-bending area adjacent to the bending area;
a rigid member disposed below the display panel; and
Including a support member disposed under the rigid member,
The display panel and the rigid member are bendable at a portion corresponding to the bending area;
The support member is separated based on the bending reference line when the display panel and the rigid member are bent;
An adhesive member is disposed between the rigid member and the support member,
In the adhesive member, the adhesive strength of the portion corresponding to the bending area and the adhesive strength of the portion corresponding to the non-bending area are different from each other.
a display panel including a bending area with a bending reference line and a non-bending area adjacent to the bending area;
a rigid member disposed below the display panel; and
Including a support member disposed under the rigid member,
The display panel and the rigid member are bendable at a portion corresponding to the bending area;
When the display panel and the rigid member are bent, the support member is separated based on a bending reference line within the bending area,
An adhesive member is disposed between the rigid member and the support member,
In the adhesive member, a hardness of a portion corresponding to the bending area and a hardness of a portion corresponding to the non-bending area are different from each other.

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