KR20200079856A - Touch panel and stretchable display device comprising the same - Google Patents

Abstract

The present invention relates to a stretchable display device. According to one embodiment of the present invention, the stretchable display device comprises: a display panel including a first substrate made of a stretchable material and a plurality of second substrates made of a more rigid material than the first substrate and spaced apart from the first substrate by a predetermined distance; and a touch panel disposed on the display panel and including a touch base substrate made of a stretchable material and a plurality of touch sensing films disposed on the touch base substrate corresponding to an area in which the plurality of second substrates are disposed. Accordingly, the stretchable display device according to one embodiment of the present invention can sense a touch by including a touch panel configured to be stretchable.

Description

Touch panel and stretchable display device including the same {TOUCH PANEL AND STRETCHABLE DISPLAY DEVICE COMPRISING THE SAME}

The present invention relates to a stretchable display device, and more particularly, to a stretchable display device including a touch panel.

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

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

Recently, a stretchable display device that is formed to be stretchable in a specific direction and changeable in various shapes by forming a display unit, a wiring, or the like on a flexible substrate such as plastic, which is a flexible material, attracts attention as a next-generation display device. I am receiving.

On the other hand, the touch panel is an input device capable of recognizing a location when a plurality of touch electrodes are disposed to touch a human hand or an object. With the development of smart devices, the use range and requirements of the touch panel are expanding.

In general, touch panels are manufactured based on glass or plastics of rigid materials. Accordingly, it is difficult to apply the touch panel to the stretchable display device, which is drawing attention as a next-generation display device.

The problem to be solved by the present invention is to provide a stretchable display device including a stretchable touch panel corresponding to stretching of the display panel.

Another problem to be solved by the present invention is to provide a stretchable display device for minimizing the deformation of the shape of the outer portion according to the stretching characteristics of the display panel.

Another problem to be solved by the present invention is to provide a stretchable display device capable of reducing damage to the stretchable display device by overstretching.

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

The touch panel according to an embodiment of the present invention is made of a stretchable material, a touch base substrate on which a touch sensing area is defined, a first touch wiring disposed in a first direction on the touch base substrate, and the touch panel on the touch base substrate. It includes a second touch wiring disposed in a second direction different from the first direction, and a plurality of touch sensing films interposed between the first touch wiring and the second touch wiring and disposed corresponding to the touch sensing area. Accordingly, the touch panel according to an embodiment of the present invention is made of a stretchable material, and thus is applicable to a stretchable display device.

The stretchable display device according to an exemplary embodiment of the present invention includes a first substrate made of a stretchable material and a plurality of second substrates made of a rigid material than the first substrate and spaced a predetermined distance on the first substrate. A touch panel including a touch panel including a plurality of touch sensing films disposed on a display panel and a touch base substrate disposed on the display panel and corresponding to a region in which a plurality of second substrates and a touch base substrate made of a stretchable material are disposed do. Accordingly, the stretchable display device according to an exemplary embodiment of the present invention may provide a stretchable display device capable of touch sensing by including a touch panel configured to be stretchable.

A stretchable display device according to another exemplary embodiment of the present invention includes a stretchable panel in which an active region displaying an image and an inactive region disposed in an outer region of the active region are defined, and a first disposed in a first direction of the panel A plurality of guide frames and a second guide frame disposed in a second direction different from the first direction of the panel, and a plurality of guide frames arranged in correspondence to the maximum elongation of the panel in one of the first guide frame and the second guide frame The fastening shape of the first guide frame and the second guide frame of the plurality of fastening shapes of the guide frame other than the guide frame is formed to be fastened with any one of the fastening shapes of the plurality of fastening shapes according to the stretching of the panel A fastening portion is formed. Accordingly, the stretchable display device according to another exemplary embodiment of the present invention reduces the damage of the panel by overstretching by arranging the first guide frame and the second guide frame to control the stretching to correspond to the maximum elongation of the panel. I can do it.

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

The present invention provides a stretchable touch panel capable of sensing a touch of a piezoelectric type by interposing a touch sensing film in an area where a first touch wire and a second touch wire intersect in different directions on a touch base substrate made of a stretchable material. Can be implemented.

The present invention may provide touch sensing in a stretchable display device by providing a display panel made of a stretchable material and a touch panel made of a stretchable material to correspond to the stretching of the display panel.

The present invention allows the first touch wiring and the second touch wiring disposed in different directions in the touch sensing area of the touch panel to have a straight shape, and the first touch wiring and the second touch wiring in the stretching area where no touch is detected. By arranging it to have a wave shape, it is possible to minimize a touch sensing error while minimizing damage to the touch wiring due to stretching of the touch panel.

The present invention can reduce the vertical ratio difference between the outer portion and the center portion by stretching of the stretchable display device by forming the edges of the display panel and the touch panel made of a stretchable material to have a cut chamfer shape.

The present invention is disposed in a first direction on the outside of a panel including at least one of a stretchable display panel and a touch panel, and is arranged in a direction different from the first guide frame and the first direction in which the locking groove is formed, but is fastened to the locking groove. By disposing the formed second guide frame, damage to the stretchable display device due to overstretching can be minimized.

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

1 is an exploded perspective view of a stretchable display device according to an exemplary embodiment of the present invention.
FIG. 2 is an enlarged plan view of area A of FIG. 1.
3 is a perspective view of a touch panel of a stretchable display device according to an exemplary embodiment of the present invention.
4 is an enlarged plan view of an area B of FIG. 3 enlarged.
5 is a cross-sectional view illustrating a detailed configuration of a film layer disposed on a touch panel according to an embodiment of the present invention.
6 is a schematic cross-sectional view of one sub-pixel of a stretchable display device according to an exemplary embodiment of the present invention.
7 is a schematic cross-sectional view of one sub-pixel of a stretchable display device according to another exemplary embodiment.
8 is an enlarged plan view of an area A of another embodiment of FIG. 1 in an enlarged view.
9 is an enlarged plan view of an enlarged partial area of a touch panel in the stretchable display device of FIG. 1.
10 is a perspective view of a touch panel of a stretchable display device according to another embodiment of the present invention.
11 is an enlarged plan view of an area C of FIG. 10 enlarged.
12 is a plan view illustrating a stretchable display device according to another exemplary embodiment of the present invention.
13 is an enlarged plan view of an area D of FIG. 12 enlarged.
14 is a plan view illustrating the display panel of FIG. 12.
15 is a cross-sectional view taken along line a-a' in FIG. 12.
FIG. 16 is a plan view showing a state when the stretchable display device of FIG. 12 is stretched.

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

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

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

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

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

Although the 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 component. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

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

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

Each of the features of the various embodiments of the present invention may be partially or entirely combined or combined with each other, and technically various interlocking and driving may be possible as those skilled in the art can fully understand, and each of the embodiments may be implemented independently of each other. It can also be implemented together in an associative relationship.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The stretchable display device may be referred to as a display device capable of displaying an image even when it is bent or stretched. The stretchable display device may have high flexibility compared to a general display device. Accordingly, the shape of the stretchable display device can be freely changed according to a user's manipulation, such as a user bending or stretching the stretchable display device. For example, when the user grasps and pulls the end of the stretchable display device, the stretchable display device may be stretched by the user's force. Alternatively, when the user places the stretchable display device on a non-flat wall surface, the stretchable display device may be arranged to be curved along the shape of the surface of the wall surface. Also, when the force exerted by the user is removed, the stretchable display device may return to its original form.

1 is an exploded perspective view of a stretchable display device according to an exemplary embodiment of the present invention. FIG. 2 is an enlarged plan view of area A of FIG. 1.

First, referring to FIG. 1, the stretchable display device 1000 according to an exemplary embodiment of the present invention includes a display panel 100, a touch panel 200, a flexible connection film 300, and a printed circuit board 400 ).

The display panel 100 can be stretched along one of the first direction (X) or the second direction (Y), or stretched in two dimensions along the first direction (X) and the second direction (Y). It is possible. Here, the first direction X and the second direction Y form a plane of the stretchable display device 1000, and the second direction Y may be a direction perpendicular to the first direction X. .

The display panel 100 may have a chamfered shape 101 in which each edge is cut. In general, when the display panel of the stretchable display device is stretched, the upper and lower sides of the outermost or the left and right sides of the outermost are grasped and stretched. In this case, the degree of deformation of the outermost portion of the display panel 100 and the degree of deformation of the central portion are Differences can occur. For example, deformation that may occur at the top, bottom, left, and right sides of the outermost portion of the display panel 100 may occur larger or less than deformation that may occur at the top, bottom, left, or right sides of the center. That is, the vertical ratio of the outermost portion of the display panel and the vertical ratio of the center of the display panel may be different from each other. Accordingly, when the edge portion of the stretchable display device 1000 according to an embodiment of the present invention has a chamfered shape with a cut edge, the upper and lower sides of the outermost portion when the display panel 100 is stretched, or There is little difference in the length of the left and right sides and the length of the upper and lower sides or the left and right sides of the center. Accordingly, the stretchable display device 1000 according to an exemplary embodiment of the present invention can provide uniform image quality in any area.

In the stretchable display device 1000 according to an exemplary embodiment of the present invention, the touch panel 200 may serve as an upper substrate of the display panel 100. Accordingly, the display panel 100 and the touch panel 200 are not illustrated in FIG. 1, but may be adhered by an adhesive layer.

The lower substrate 110 of the display panel 100 is a substrate for supporting and protecting various components of the stretchable display device 1000. The lower substrate 110 may have a chamfered shape 101 with cut edges. The lower substrate 110 is made of a flexible material and is disposed on the first substrate 111 of the stretchable lower substrate 110 and the first substrate 111 of the lower substrate 110 and is more rigid than the first substrate 111 It may be made of a second substrate 112 of the lower substrate 110 made of.

The first substrate 111 may be formed of an insulating material that can be bent or stretched. For example, the first substrate 111 may be made of an elastomer such as silicone rubber such as polydimethylsiloxane (PDMS) and polyurethane (PU). It can have properties. However, the material of the first substrate 111 is not limited thereto. The first substrate 111 is a flexible substrate, and expansion and contraction may be reversibly performed. In addition, the elastic modulus (elastic modulus) may be several MPa to several hundred MPa, the elongation failure rate may be 100% or more. The thickness of the first substrate 111 may be 10 μm to 1 mm, but is not limited thereto.

On the first substrate 111, a plurality of second substrates 112 spaced apart from each other by a predetermined distance are disposed. The plurality of second substrates 112 may be substrates having stiffness compared to the flexible substrate 111, but may be flexible and less stretchable. The plurality of second substrates 112 may be made of, for example, polyimide (PI), polyacrylate, polyacetate, or the like.

The modulus of the plurality of second substrates 112 may be higher than that of the first substrate 111. Modulus is a modulus of elasticity that represents the ratio of stress to strain against a stress applied to a substrate. When the modulus is relatively high, the hardness may be relatively high. Therefore, the plurality of second substrates 112 may be a plurality of rigid substrates having stiffness compared to the first substrate 111. The modulus of the plurality of second substrates 112 may be 1000 times greater than that of the first substrate 111, but is not limited thereto.

Each of the plurality of second substrates 112 is provided with a display element and various driving elements for driving the display element, for example, a switching thin film transistor, a driving thin film transistor, and a capacitor. Here, the display device may be any one of an organic light emitting device and a micro LED.

In general, stretchable display devices must have a property of being easily bent or stretched, and thus there have been attempts to use a substrate having a small modulus and a soft property. However, when a soft material such as polydimethylsiloxane (PDMS) having a small modulus is used as a material of a lower substrate on which a display element is disposed, since the material having a small modulus is weak to heat, transistors and display elements are formed by these characteristics. There was a problem that the substrate was damaged by a high temperature generated during the process, for example, a temperature of 100°C or higher.

Accordingly, the display element must be formed on a substrate made of a material capable of withstanding high temperature to prevent damage to the substrate in the process of forming the display element. Accordingly, attempts have been made to form a substrate with a material that can withstand high temperatures that occur during the manufacturing process, such as polyimide (PI), but materials that can withstand high temperatures have large modulus and do not have ductility properties, resulting in stretchable display. In the process of stretching the device, a problem occurs that the substrate is difficult to bend or stretch.

Accordingly, in the stretchable display device 1000 according to an exemplary embodiment of the present invention, a plurality of second substrates 112, which are rigid substrates, are disposed in a region in which the transistors or display elements are disposed on the lower substrate 110 to form a transistor. B. Damage to the stretchable display device 1000 due to high temperature in the manufacturing process of the display element can be minimized.

1 and 2, each of the plurality of second substrates 112 may be electrically connected by a connection wire 180. The connection wiring 180 may be electrically connected by connecting pads disposed on each of the plurality of second substrates 112 to each other. Here, the pads disposed on each of the plurality of second substrates 112 may be, for example, gate pads, data pads, and power pads. Since the connection wiring 180 is disposed on the first substrate 111, it may have a wavy shape to respond to stretching. In one embodiment of the present invention, the connection wiring 180 is shown as having a meandering wave shape, but is not limited thereto, and may have a straight shape depending on the material forming the connection wiring 180, and may be used for stretching. By reducing the damage to the connection wiring 180, for example, it may have a shape such as a rhombus shape.

In a general display device, various wirings such as a plurality of gate wirings and a plurality of data wirings are extended and arranged between a plurality of sub-pixels, and a plurality of sub-pixels are connected to one signal wiring. Accordingly, in the case of a general display device, various wires such as gate wiring, data wiring, high-potential power wiring, and reference voltage wiring are seamlessly extended from one side of the display device to the other on the substrate.

In contrast, in the stretchable display device 1000 according to an exemplary embodiment of the present invention, various wirings such as a gate wiring, a data wiring, a high-potential power wiring, and a reference voltage wiring made of a metal material may include a plurality of second substrates 112. ). That is, in the stretchable display device 1000 according to an embodiment of the present invention, various wires made of a metal material are disposed on a plurality of second substrates 112 and are not formed to contact the first substrate 111. It may not. Accordingly, various wires disposed on the stretchable display device 1000 may be patterned to correspond to the plurality of second substrates 112 and may be discontinuously disposed.

Meanwhile, in the stretchable display device 1000 according to an exemplary embodiment of the present invention, pads on two second substrates 112 adjacent to each other may be connected by the connection wiring 180 to connect these discontinuous wiring. have. That is, the connection wiring 180 electrically connects pads on two adjacent second substrates 112. Therefore, the stretchable display device 1000 according to an exemplary embodiment of the present invention electrically connects various wirings such as a gate wiring, a data wiring, a high potential power wiring, and a reference voltage wiring between the plurality of second substrates 112. A plurality of connection wires 180 may be included to connect.

The connection wire 180 electrically connects the plurality of second substrates 112 to each other. That is, the connection wiring 180 is disposed in the separation area of the plurality of second substrates 112. The connection wire 180 is disposed between pads disposed on the plurality of second substrates 112 to electrically connect each pad. Accordingly, the stretchable display device 1000 according to an exemplary embodiment of the present invention includes a plurality of second substrates 112 for various wirings such as gate wiring, data wiring, high potential power wiring, low potential power wiring, and reference voltage wiring. ) May include a plurality of connection wires 180 to electrically connect. For example, although not illustrated on the plurality of second substrates 112 adjacent to each other in the first direction X, gate wirings made of a metal material may be disposed, and gate pads are disposed at both ends of the gate wirings. Can be. At this time, each of the plurality of gate pads on the plurality of second substrates 112 disposed adjacent to each other in the first direction X may be connected to each other by a connection wire 180 serving as a gate wire. Accordingly, the gate wiring disposed on the plurality of second substrates 112 and the connection wiring 180 disposed on the first substrate 111 may function as one gate wiring. In addition, all the various wires that may be included in the stretchable display device 1000 such as data wiring, high-potential power wiring, and reference voltage wiring may also function as one wiring by the connection wiring 180 as described above. have.

Referring to FIG. 2, the connection wiring 180 may include a first connection wiring 181 and a second connection wiring 182.

The first connection wiring 181 means a wiring disposed in the first direction X in the lower substrate 110. The first connection wiring 181 may connect pads on two second substrates 112 arranged side by side among the pads on the plurality of second substrates 112 disposed adjacent to each other in the first direction X. The first connection wiring 181 may function as a gate wiring or a high potential power wiring, but is not limited thereto.

The second connection wiring 182 refers to a wiring disposed in the second direction Y from the lower substrate 110. The second connection wiring 182 may connect pads on two second substrates 112 arranged side by side among the pads on the plurality of second substrates 112 disposed adjacent to each other in the second direction Y. The second connection wiring 182 may function as a data wiring, a reference voltage wiring, or a low potential power wiring, but is not limited thereto.

Referring to FIG. 2, the connection wiring 180 electrically connects the pads disposed on the second substrate 112 adjacent to each other among the plurality of second substrates 112 and extends in a curved shape between each pad. . That is, the first connection wiring 181 and the second connection wiring 182 may each be extended while having a wavy shape. For example, as illustrated in FIG. 2, the first connection wire 181 and the second connection wire 182 may have a sine wave shape. However, the shapes of the first connection wiring 181 and the second connection wiring 182 are not limited thereto, and, for example, the first connection wiring 181 and the second connection wiring 182 may be extended in a zigzag shape. In addition, a plurality of rhombus-shaped wires may have various shapes such as being connected and extended at a vertex.

The first connection wiring 181 and the second connection wiring 182 may be made of metal materials, such as copper (Cu), silver (Ag), and gold (Au), for example. Accordingly, in the stretchable display device 1000 of the present invention, the connection wiring 180 has a curved shape, so that even when the connection wiring 180 is made of a metal material, the connection wiring 180 is damaged when the display panel is stretched. Can be minimized.

Referring to FIG. 1, the lower substrate 110 may include an active area AA in which an image is displayed and an inactive area NA surrounding the active area AA.

The active area AA is an area in which an image is displayed on the stretchable display device 1000. In the active area AA, a plurality of second substrates 112 in the form of a piece of any part of the first substrate 111 is disposed on the first substrate 111 made of a flexible material, and the second substrate 112 is They are placed at regular intervals.

The inactive area NA is an area adjacent to the active area AA. The inactive area NA may be disposed to surround the active area AA adjacent to the active area AA. The inactive area NA is an area in which an image is not displayed, and wiring, circuitry, and the like may be formed. For example, a gate driving circuit part, a data driving circuit part, and a plurality of signal pads and power pads may be disposed in the inactive area NA, and each pad may be connected to each of the plurality of sub-pixels of the active area AA. have. The inactive area NA may be provided with only the second substrate 112, and a plurality of second substrates 112 may be spaced apart from each other on the first substrate 111 in the same manner as the active area AA. It might be. Each of the plurality of second substrates 112 of the inactive area NA includes driving elements capable of driving a plurality of sub-pixels, for example, transistors or IC chips constituting a gate driving circuit and a data driving circuit. Can be deployed. The plurality of second substrates 112 disposed in the inactive area NA also extends the connection wiring 180 of the active area AA to extend the second substrate 112 and the active area AA of the inactive area NA. ), the second substrates 112 may be electrically connected to each other.

The touch panel 200 is disposed on the display panel 100 and may function as an upper substrate of the display panel 100. Specifically, the touch panel 200 may be disposed to face the lower substrate 110 of the display panel 100. Accordingly, although not shown in FIG. 1, the touch panel 200 may be adhered to the lower substrate 110 of the display panel 100 by an adhesive layer.

The touch panel 200 can be stretched along one of the first direction (X) or the second direction (Y), or two-dimensionally stretched along the first direction (X) and the second direction (Y). It may be possible. Here, the first direction X and the second direction Y form a plane of the stretchable display device 1000, and the second direction Y may be a direction perpendicular to the first direction X. .

The touch panel 200 may have a chamfered shape 201 in which each corner is cut. In general, when the touch panel of the stretchable display device is stretched, the upper and lower sides of the outermost or the left and right sides of the outermost are grasped and stretched. In this case, the degree of deformation of the outermost portion and the degree of deformation of the center portion of the touch panel 200 are determined. Differences can occur. For example, deformation that may occur at the top, bottom, left, and right sides of the outermost portion of the touch panel 200 may occur larger or less than deformation that may occur at the top, bottom, left, or right sides of the center. That is, when the touch panel 200 is stretched, the vertical ratio of the outermost portion and the center portion of the touch panel 200 may be different. Accordingly, when the edge portion has a chamfered shape 201, such as the touch panel 200 of the stretchable display device 1000 according to an embodiment of the present invention, when the touch panel 200 is stretched, the outermost portion There is almost no difference in length between the upper and lower sides or the left and right sides and the length of the upper and lower sides or the left and right sides of the center. Therefore, the stretchable display device 1000 according to an exemplary embodiment of the present invention can detect a more clear touch signal that is not distorted. The touch panel 200 of the stretchable display device 1000 according to an exemplary embodiment of the present invention will be described in more detail with reference to FIGS. 3 to 5 and 9 to 11 below.

The flexible connection film 300 is a film in which various parts are disposed on the base film 310 made of a flexibility material, and is a component for supplying signals to a plurality of sub-pixels of the active area AA. The flexible connection film 300 is disposed between the display panel 100 and the printed circuit board 400 to transmit a signal input from the printed circuit board 400 to pixels disposed on the lower substrate 110. That is, the flexible connection film 300 is disposed between the lower substrate 110 and the printed circuit board 400 of the display panel 100 to electrically connect the lower substrate 110 and the printed circuit board 400. . The flexible connection film 300 may be bonded to a plurality of bonding pads disposed in the inactive area NA, and a plurality of subs of the active area AA may be supplied with power voltage, data voltage, and gate voltage through the bonding pad. Each pixel is supplied. The flexible connection film 300 includes a base film 310 and a driving IC 320, and various other components may be disposed.

The base film 310 is a layer supporting the driving IC 320 of the flexible connection film 300. The base film 310 may be made of an insulating material, for example, made of an insulating material having flexibility.

The driving IC 320 is a component that processes data for displaying an image and a driving signal for processing the data. In FIG. 1, the driving IC 320 is mounted as a COF method, but is not limited thereto, and the driving IC 320 may also be mounted in a method such as COG (Chip On Glass) or TCP (Tape Carrier Package). have.

A control unit such as an IC chip or a circuit unit may be mounted on the printed circuit board 400. In addition, a memory, a processor, or the like may be mounted on the printed circuit board 400. The printed circuit board 400 is configured to transmit a signal for driving the display element from the control unit to the display element.

The printed circuit board 400 may be connected to the flexible connection film 300 and electrically connected to each of the plurality of sub-pixels disposed on the plurality of second substrates 112.

As described above, the stretchable display device 1000 according to an exemplary embodiment of the present invention includes a touch panel 200 that can be stretched corresponding to the stretching of the display panel 100. Accordingly, the stretchable touch panel 200 according to an embodiment of the present invention will be described in more detail with reference to FIGS. 3 to 5 below.

3 is a perspective view of a touch panel of a stretchable display device according to an exemplary embodiment of the present invention. 4 is an enlarged plan view of an area B of FIG. 3 enlarged. 5 is a cross-sectional view illustrating a detailed configuration of a film layer disposed on a touch panel according to an embodiment of the present invention.

First, referring to FIGS. 3 and 4, the touch panel 200 according to an exemplary embodiment of the present invention may serve as an upper substrate of the display panel 100. The touch panel 200 is made of a material that can correspond to the stretching of the display panel 100, and may have a shape corresponding to the lower substrate 110 of the display panel 100, and the touch panel 200 is an edge portion It may have a cut chamfered shape 201.

The touch panel 200 includes a base substrate, a touch base substrate 210, a plurality of touch sensing films 220 disposed on the touch base substrate 210, a touch base substrate 210 and a plurality of touch sensing films 220. A plurality of touch wires 230 arranged in the first direction X and the second direction Y and a touch detection wire 280 transmitting touch signals detected by the plurality of touch wires 230 may be disposed on the screen. Can.

The touch base substrate 210 is a substrate supporting a plurality of touch sensing films 220, a plurality of touch wires 230, and a touch detection wire 280. The touch base substrate 210 may be made of a stretchable flexible material. That is, the touch base substrate 210 may be made of the same material as the first substrate 111 of the display panel 100. That is, the touch base substrate 210 may be formed of an insulating material that can be bent or stretched. For example, the touch base substrate 210 may be made of an elastomer such as silicone rubber such as polydimethylsiloxane (PDMS) and polyurethane (PU). It can have properties. However, the material of the touch base substrate 210 is not limited thereto. The touch base substrate 210 is a flexible substrate, and expansion and contraction may be reversibly performed. In addition, the elastic modulus (elastic modulus) may be several MPa to several hundred MPa, the elongation failure rate may be 100% or more.

The plurality of touch sensing films 220 are spaced apart from each other by a predetermined distance on the touch base substrate 210. The size of each of the plurality of touch sensing films 220 may correspond to the size of each of the plurality of second substrates 112 disposed on the display panel 100.

Referring to FIG. 5, the plurality of touch sensing films 220 may include a touch sensing material 222. More specifically, the plurality of touch sensing films 220 may be formed by dispersing the touch sensing material 222 in a particle form on the touch base film 221 made of an insulating material that can be bent or stretched.

The touch base film 221 of the touch sensing film 220 may be made of the same material as the touch base substrate 210 or the first substrate 111 of the display panel 100. Specifically, the touch base film 221 of the plurality of touch sensing substrates 220 is an elastomer such as silicone rubber such as polydimethylsiloxane (PDMS) and polyurethane (PU). It can be made of.

The touch-sensitive material 222 of the touch-sensitive film 220 may be composed of at least one of a piezo metal and a piezo polymer. On the other hand, in one embodiment of the present invention is described that the touch base film 221 is made of an insulating material that can be bent or stretched, but is not limited to this, a flexible plastic material, that is, the second of the display panel 100 It may be made of the same material as the substrate 112. In addition, in the exemplary embodiment of the present invention, the touch sensing film 220 is described as including the particle type touch sensing material 222 in the touch base film 221, but is not limited thereto, and is a stretchable piezo film. It can only be done. A plurality of touch wires 230 for sensing a touch may be disposed under and above the touch sensing film 220.

The plurality of touch wires 230 may be disposed to extend in the first direction X and the second direction Y of the touch panel 200. Specifically, the plurality of touch wires 230 includes a plurality of first touch wires 231 and a touch sensing film arranged in a first direction (X) or a second direction (Y) on the touch base substrate 210 ( 220, a plurality of second touch wires 232 arranged in different directions in a direction in which the plurality of first touch wires 231 are arranged may be included. For example, referring to FIGS. 3 and 4, if the plurality of first touch wires 231 are arranged in the first direction X, the plurality of second touch wires 232 are arranged in the second direction Y Can be. That is, the plurality of first touch wires 231 and the plurality of second touch wires 232 may be arranged to intersect.

A touch sensing film 220 of the touch panel 200 is interposed between the plurality of first touch wires 231 and the plurality of second touch wires 232. More specifically, a plurality of touch detection is performed in an area where a plurality of first touch wires 231 disposed in the first direction X and a plurality of second touch wires 232 disposed in the second direction Y intersect. The film 220 may be disposed. In this case, an area where the plurality of first touch wires 231 and the plurality of second touch wires 232 intersect may correspond to an area where the second substrate 112 of the display panel 100 is disposed. Also, a region in which the plurality of first touch wires 231 and the plurality of second touch wires 232 intersect may be a touch sensing region TSA. Accordingly, the touch panel 200 may sense touch coordinates and touch pressure using a change in resistance of the touch sensing substrate 220 with respect to the touch input.

The plurality of touch wires 230 may be formed of a transparent conductive material. For example, it may be made of a transparent conductive material such as indium-tin-oxide (ITO), conductive polymer, or carbon nanotube.

The plurality of touch wires 230 may have a wave shape in the first region of the touch base substrate 210 and a straight shape in the second region of the touch base substrate 210. At this time, the first region is an area where the touch base substrate 210 is disposed because the plurality of touch sensing films 220 are not disposed, and the second area is the touch sensing film 220 disposed on the touch base substrate 210. Area. That is, the second area may be a touch sensing area (TSA).

Meanwhile, bending of the plurality of touch wires 230 disposed in the first region may have a fine spacing, that is, a fine pitch. Accordingly, the degree of bending of the plurality of touch wires 230 disposed in the first region of the touch panel 200 is greater than the degree of bending of the connection wires 180 disposed on the first substrate 111 of the display panel 100. It can bend a lot. For example, if the connection wire 180 shown in FIG. 2 is formed by bending twice, the touch wire 230 shown in FIG. 4 may be bent four times. This is to secure more of the touch sensing area of the touch panel 200. More specifically, if the number of curved lines of the touch wiring 230 disposed in the first region is greater than the number of curved lines of the connection wiring 180 disposed in the display panel 100, the touch panel 200 disposed in a straight line is formed. It is possible to further increase the number of arrangements of the two areas, that is, the touch sensing area. Alternatively, if the number of curved lines of the touch wiring 230 disposed on the first area of the touch panel 200 is greater than the number of curved lines of the connection wiring 180 disposed on the display panel 100, the touch panel 200 disposed in a straight line shape ), the second sensing area, that is, the touch sensing area may be larger, and thus the touch sensing area may be significantly increased. Accordingly, when the degree of bending of the plurality of touch wires 230 disposed in the first region is large, a more clear touch detection may be achieved because a large number of touch sensing regions may be formed or larger. Also, alignment between the second substrate 112 of the display panel 100 and the second area of the touch panel 200 may be easier. The reason for arranging the touch wiring 230 to have a wave shape in the first area of the touch base substrate 210 is to correspond to the elongation of the touch panel 200, and touch to have a linear shape in the second area. The reason for arranging the wiring 230 is that in the case of having a wave shape in the second region, an error in the touch sensing signal due to interference between the first touch wiring 231 and the second touch wiring 232 may occur. More specifically, in the second region, that is, the touch sensing region, the first touch wire 231 and the second touch wire 232 are crossed, and a touch is sensed at the crossing portion. 2 When the touch wire 232 is bent, a signal caused by this may occur because the intersection of the first touch wire 231 and the second touch wire 232 may be disposed more than in the case of a straight shape, and the intersection may be disposed adjacently. Interference may occur. However, in FIGS. 3 and 4, the touch wiring 230 of the stretchable display device 1000 according to an embodiment of the present invention is illustrated as including both a wave shape and a straight shape, but is not limited thereto. Rather, it may be arranged to have a wave shape in all areas to have a degree of curvature such that signal interference does not occur in the touch sensing area, or if the touch wiring can be formed of a material capable of corresponding to stretching in the first area It may be arranged to have a linear shape.

As described above, a plurality of touch sensing films 220 of the touch panel 200 of the stretchable display device 1000 according to an embodiment of the present invention are arranged to be spaced apart from each other on the flexible base touch base substrate 210. When the display panel 100 is stretched in both directions by arranging it in an area overlapping the second substrate 112 of the display panel 100, the touch panel 200 may also be stretched in both directions.

In addition, the touch sensing film 220 of the touch panel 220 may be located in an area between the second substrates 112 of the display panel 100, and thus, the sensitivity of sensing the touch position may be higher.

The touch base substrate 210 of the touch panel 200 may include an active area AA capable of touch sensing and an inactive area NA surrounding the active area AA.

The active area AA is an area in which a touch sensing substrate 212 and a plurality of touch wires 230 for detecting a touch described above are disposed to detect a touch signal input from the outside.

The inactive area NA of the touch panel 200 is an area disposed adjacent to the active area AA of the touch panel 200, and the non-active area NA has a touch detection signal detected in the active area AA. A plurality of touch detection wires 280 for transferring the data to an external driving unit (not shown) is disposed.

Also, the inactive area NA of the touch panel 200 may correspond to an area in which the flexible connection film 300 of the display panel 100 is located.

The plurality of touch detection wires 280 may be made of the same transparent conductive material as the material constituting the plurality of touch wires 230 disposed in the active area AA, but in addition, molybdenum (Mo), silver (Ag), and titanium (Ti), copper (Cu), aluminum (Al), etc., may also be made of an opaque material with low resistance.

Although not illustrated, a plastic substrate made of a material having flexibility may be further disposed on or below the touch base substrate 210 in the non-active area NA of the touch panel 200. This may include a flexible connection film, for example, COF, for electrical connection with the outside in the inactive area NA, and the process for electrical connection with the flexible connection film is generally made of a high temperature process. It is to endure it because it loses.

Hereinafter, a structure of the stretchable display device 1000 according to an exemplary embodiment of the present invention will be described in more detail.

6 is a schematic cross-sectional view of one sub-pixel of a stretchable display device according to an exemplary embodiment of the present invention.

Referring to FIG. 6, the second substrate 112 is disposed on a predetermined area of the first substrate 111 of the lower substrate 110 of the display panel 100. The area where the second substrate 112 is disposed on the lower substrate 110 may be referred to as a rigid area (RA), and the area where the second substrate 112 is not disposed is a soft area (SA). ).

Referring to FIG. 6, a buffer layer 113 is disposed on the second substrate 112. The buffer layer 113 may be made of an insulating material, for example, an inorganic layer made of silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiON), or the like, may be composed of a single layer or a multi-layer.

The buffer layer 113 may be disposed in an area overlapping with the second substrate 112, that is, a rigid area, to protect various components of the stretchable display device 1000 from penetration of moisture and oxygen from the outside. This is because the buffer layer 113 may be made of an inorganic material, and thus may be easily damaged, such as cracks, in the process of stretching the stretchable display device 1000. Accordingly, the buffer layer 113 is not formed in a spaced apart region between the plurality of second substrates 112, and is patterned similarly to the shape of the plurality of second substrates 112 to be formed on the plurality of second substrates 112. Can be. Accordingly, in the stretchable display device 1000 according to an embodiment of the present invention, the stretchable display device 1000 is bent by forming the buffer layer 113 in an area overlapping the second substrate 112 which is a rigid substrate. Even if it is deformed, such as stretching, damage to the buffer layer 113 can be prevented.

However, the buffer layer 113 may be omitted depending on the structure or characteristics of the stretchable display device 1000.

Referring to FIG. 6, a transistor 150 including a gate electrode 151, an active layer 152, a source electrode 153, and a drain electrode 154 is formed on the buffer layer 113. For example, looking at the process of forming the transistor 150, the active layer 152 is formed on the buffer layer 113, and the active layer 152 and the gate electrode 151 are insulated on the active layer 152. A gate insulating layer 114 is formed for the purpose. An interlayer insulating layer 115 for insulating the gate electrode 151, the source electrode 153, and the drain electrode 154 is formed, and the source electrode (contacting the active layer 152 on the interlayer insulating layer 115, respectively) 153) and a drain electrode 154 are formed.

In addition, the gate insulating layer 114 and the interlayer insulating layer 115 may be patterned and formed in an area overlapping the second substrate 112. Since the gate insulating layer 114 and the interlayer insulating layer 115 may also be made of the same inorganic material as the buffer layer 113, cracks may be easily damaged during stretching of the stretchable display device 1000. . Accordingly, the gate insulating layer 114 and the interlayer insulating layer 115 are not formed in a region between the second substrates 112, that is, a flexible region, and are patterned similarly to the shape of the second substrate 112 so that the second It may be formed on the substrate 112.

In FIG. 6, for convenience of description, only a driving transistor among various transistors that may be included in the stretchable display device 1000 is illustrated, but a switching transistor, a capacitor, and the like may also be included in the display device. In addition, in this specification, the transistor 150 is described as having a coplanar structure, but is not limited thereto, and various transistors such as a staggered structure may be used.

Referring to FIG. 6, a gate pad 171 is disposed on the gate insulating layer 114. The gate pad 171 is a pad for transmitting a gate signal to a plurality of sub-pixels SPX. The gate pad 171 may be made of the same material as the gate electrode 151, but is not limited thereto.

Referring to FIG. 6, a planarization layer 116 is formed on the transistor 150 and the interlayer insulating layer 115. The planarization layer 116 planarizes the top of the transistor 150. The planarization layer 116 may be composed of a single layer or a plurality of layers, and may be made of an organic material. For example, the planarization layer 116 may be made of an acrylic organic material, but is not limited thereto. The planarization layer 116 includes a contact hole for electrically connecting the transistor 150 and the anode 161, a contact hole for electrically connecting the data pad 173 and the source electrode 153, and a connection pad 172 And a contact hole for electrically connecting the gate pad 171.

In some embodiments, a passivation layer may be formed between the transistor 150 and the planarization layer 116. That is, in order to protect the transistor 150 from penetration of moisture and oxygen, a passivation layer covering the transistor 150 may be formed. The passivation layer may be made of an inorganic material, it may be made of a single layer or a multi-layer, but is not limited thereto.

Referring to FIG. 6, a data pad 173, a connection pad 172, and an organic light emitting device 160 are disposed on the planarization layer 116.

The data pad 163 may transmit a data signal to the plurality of sub-pixels SPX from the connection wiring 130 functioning as a data wiring. The data pad 163 is connected to the source electrode 153 of the transistor 150 through a contact hole formed in the planarization layer 116. The data pad 153 may be made of the same material as the anode 161 of the organic light emitting device 160, but is not limited thereto. In addition, the data pad 173 is formed on the interlayer insulating layer 115 rather than on the planarization layer 116, and may be formed of the same material as the source electrode 153 and the drain electrode 154 of the transistor 150. .

The connection pad 172 may transfer a gate signal from the connection wire 180 functioning as a gate wire to a plurality of sub-pixels SPX. The connection pad 172 is connected to the gate pad 171 through a contact hole formed in the planarization layer 116 and the interlayer insulating layer 115, and transmits a gate signal to the gate pad 161. The connection pad 172 may be made of the same material as the data pad 173, but is not limited thereto.

The organic light emitting device 160 is disposed to correspond to each of the plurality of sub-pixels SPX, and is a component that emits light having a specific wavelength band. That is, the organic light emitting device 160 may be a blue organic light emitting device emitting blue light, a red organic light emitting device emitting red light, a green organic light emitting device emitting green light, or a white organic light emitting device emitting white light, but is not limited thereto. It does not work. When the organic light emitting device 160 is a white organic light emitting device, the stretchable display device 1000 may further include a color filter.

The organic light emitting device 160 includes a first electrode 161, an organic light emitting layer 162, and a second electrode 163.

Specifically, the first electrode 161 is disposed on the planarization layer 116. The first electrode 161 is an electrode configured to supply holes to the organic light emitting layer 162. The first electrode 161 may be made of a transparent conductive material having a high work function. Here, the transparent conductive material may include Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), Indium Tin Zinc Oxide (ITZO). The first electrode 161 may be made of the same material as the data pad 173 and the gate pad 171 disposed on the planarization layer 116, but is not limited thereto. In addition, when the stretchable display device 1000 is implemented in a top emission method, the first electrode 161 may further include a reflector. The first electrode 161 may be made of magnesium (Mg), calcium (Ca), aluminum (Al), silver (Ag), or an alloy thereof having a low work function capable of reflecting light emitted from the organic light emitting layer.

The first electrode 161 is spaced apart for each sub-pixel SPX, and is electrically connected to the transistor 150 through the contact hole of the planarization layer 116. For example, in FIG. 6, the first electrode 161 is illustrated as being electrically connected to the drain electrode 154 of the transistor 150, but may also be electrically connected to the source electrode 153.

The bank 117 is formed on the first electrode 161, the data pad 173, the connection pad 172, and the planarization layer 116. The bank 117 is a component that distinguishes adjacent sub-pixels SPX. The bank 117 is disposed to cover at least a portion of both sides of the adjacent anode 161 to expose a portion of the upper surface of the first electrode 161. The bank 117 emits light in the lateral direction of the first electrode 161 due to the concentration of current at the edge of the first electrode 161, thereby causing the unintended sub-pixel SPX to emit or mix. It can also serve to prevent. The bank 117 may be made of acryl-based resin, benzocyclobutene (BCB)-based resin, or polyimide, but is not limited thereto.

The bank 117 includes a contact hole connecting the connection wiring 180 and the data pad 173 functioning as data wiring, and a contact hole connecting the connection wiring 180 and the connection pad 172 functioning as a gate wiring. do.

The organic emission layer 162 is disposed on the first electrode 161. The organic light emitting layer 162 is configured to emit light. The organic emission layer 162 may include a light emitting material, and the light emitting material may include a phosphorescent material or a fluorescent material, but is not limited thereto.

The organic light emitting layer 162 may be composed of one light emitting layer. Alternatively, the organic light emitting layer 162 may have a stack structure in which a plurality of light emitting layers stacked with a charge generating layer interposed therebetween. In addition, the organic light emitting layer 162 may further include at least one organic layer of a hole transport layer, an electron transport layer, a hole blocking layer, an electron blocking layer, a hole injection layer, and an electron injection layer.

Referring to FIG. 6, the second electrode 163 is disposed on the organic emission layer 162. The second electrode 163 supplies electrons to the organic emission layer 162. The second electrode 163 may be made of a material having a different work function from the first electrode 161. For example, the second electrode 163 is indium tin oxide (ITO), indium zinc oxide (Indium Zin Oxide, IZO), indium tin zinc oxide (Indium Tin Zinc Oxide, ITZO), zinc oxide (Zinc Oxide, ZnO) and tin oxide (Tin Oxide, TO)-based transparent conductive oxide or ytterbium (Yb) alloy.

The second electrode 163 may be formed by being patterned to overlap each of the second substrates 112. That is, the second electrode 163 is formed in an area overlapping the second substrate 112, and may be disposed so as not to be formed in an area between the second substrates 112. Since the second electrode 163 is made of a material such as a transparent conductive oxide or a transparent metal material, when the second electrode 163 is also formed in an area between the second substrates 112, the stretchable display device 1000 In the process of stretching, the second electrode 163 may be damaged. Accordingly, the second electrode 163 may be formed to correspond to each of the second substrates 112 on a plane. The second electrode 163 may be formed to have an area that does not overlap with an area where the connection wiring 180 is disposed in an area overlapping the second substrate 112. Referring to FIG. 6, an encapsulation layer 118 is disposed on the organic light emitting device 160. The encapsulation layer 118 covers the organic light emitting device 160 and may contact the upper portion of the bank 117 to seal the organic light emitting device 160. Accordingly, the encapsulation layer 118 protects the organic light emitting device 160 from moisture, air, or physical impact that may penetrate from the outside.

The encapsulation layer 118 covers each of the second electrodes 163 patterned to overlap each of the second substrates 112, and may be formed for each of the second substrates 112. That is, the encapsulation layer 118 is disposed to cover one second electrode 163 disposed on one second substrate 112 and the encapsulation layer 118 disposed on each of the plurality of second substrates 112. Can be spaced apart from each other.

The encapsulation layer 118 may be formed in an area overlapping the second substrate 112. As described above, since the encapsulation layer 118 may be configured to include an inorganic layer, cracks may be easily damaged in the process of stretching the stretchable display device 1000 and the like. In particular, since the organic light emitting device 160 is vulnerable to moisture or oxygen, when the encapsulation layer 118 is damaged, the reliability of the organic light emitting device 160 may be reduced. Accordingly, in the stretchable display device 1000 according to an exemplary embodiment of the present invention, since the encapsulation layer 118 is not formed in an area between the second substrates 112, the stretchable display device 1000 is bent. Even if it is deformed, such as stretching, damage to the encapsulation layer 118 can be minimized.

However, if necessary, the encapsulation layer 118 may be formed on the entire surface of the substrate 110.

When the stretchable display device 1000 according to an embodiment of the present invention is compared to a conventional flexible organic light emitting display device, the stretchable display device 1000 has a plurality of second substrates 112 having relatively rigidity. ) Are spaced apart from each other and disposed on the first substrate 111 having relatively ductility. In addition, the second electrode 163 and the encapsulation layer 118 of the stretchable display device 1000 are patterned and arranged to correspond to each of the plurality of second substrates 112. That is, in the stretchable display device 1000 according to an embodiment of the present invention, when the user stretches or warps the stretchable display device 1000, the stretchable display device 1000 may be more easily deformed. It has a structure, and may have a structure capable of minimizing damage to the components of the stretchable display device 1000 in a process in which the stretchable display device 1000 is deformed.

Referring to FIG. 6, an adhesive layer 119 and a touch panel 200 as an upper substrate are disposed on the lower substrate 110 of the display panel 100 on which the encapsulation layer 118 is disposed.

A plurality of first touch wires 231 disposed in one of the first direction X or the second direction Y is disposed on the touch base substrate 210 that is the base substrate of the touch panel 200. The plurality of first touch wires 231 may be made of a transparent conductive material.

A plurality of touch sensing films 220 are disposed on the plurality of first touch wires 231. Referring to FIG. 6, the plurality of touch sensing films 220 may be disposed corresponding to regions in which the second substrate 112 of the display panel 100 is disposed. That is, the touch sensing area TSA of the touch panel 200 and the rigid areas on which the second substrate 112 of the display panel 100 are disposed may be disposed to overlap each other. The number of touch sensing regions TSA disposed on the touch panel 200 may be greater than the number of rigid regions disposed on the display panel 100. Accordingly, alignment of the display panel 100 and the touch panel 200 may be easier. The touch sensing film 220 may have a shape in which piezo particles are dispersed and disposed on a stretchable base film.

A plurality of second touch wires 232 are disposed on the touch sensing film 220. The plurality of second touch wires 232 may be arranged in a direction perpendicular to the direction in which the plurality of first touch wires 231 are arranged. Accordingly, the plurality of first touch wires 231 and the plurality of second touch wires 232 may include a plurality of first touch wires 231 in a touch sensing area TSA, that is, an area where the touch sensing film 220 is disposed. And it is possible to determine whether the touch is detected by measuring the resistance between the plurality of second touch wires 232.

The touch panel 200 having such a structure is disposed to face the display panel 100, and the display panel 100 and the touch panel 200 may be bonded by the adhesive layer 119.

Meanwhile, in FIG. 6, the case where the light emitting device is an organic light emitting device is described as an example, but the light emitting device of the stretchable display device 1000 may be formed of a micro LED. The following describes the structure of one sub-pixel when the light emitting element of the stretchable display device 1000 according to an embodiment of the present invention is a micro LED.

7 is a schematic cross-sectional view of one sub-pixel of a stretchable display device according to another exemplary embodiment.

Referring to FIG. 7, the common wiring CL is disposed on the gate insulating layer 114. The common wiring CL is a wiring that applies a common voltage to the plurality of sub-pixels SPX. The common wiring CL may be made of the same material as the source electrode 153 and the drain electrode 154 of the transistor 150, but is not limited thereto.

Then, the reflective layer 723 is disposed on the interlayer insulating layer 115. The reflective layer 723 is a layer for reflecting light emitted toward the first substrate 111 from among the light emitted from the micro LED 710 to the upper portion of the stretchable display device 1000 to emit light to the outside. The reflective layer 723 may be made of a metal material having high reflectance.

The first adhesive layer 717 covering the reflective layer 723 is disposed on the reflective layer 723. The first adhesive layer 717 is a layer for adhering the micro LED 710 on the reflective layer 723, and may also insulate the micro LED 710 from the reflective layer 723 made of a metal material. The first adhesive layer 717 may be formed of a thermal curing material or a photo curing material, but is not limited thereto. In FIG. 7, the first adhesive layer 717 is shown to be disposed to cover only the reflective layer 723, but the arrangement position of the first adhesive layer 717 is not limited thereto.

The micro LED 710 is disposed on the first adhesive layer 717. The micro LED 710 is disposed to overlap the reflective layer 723. The micro LED 710 includes an n-type layer 711, an active layer 712, a p-type layer 713, a p electrode 714, and an n electrode 715. Hereinafter, a micro LED 710 having a lateral structure is used as the micro LED 710, but the structure of the micro LED 710 is not limited thereto, and is flip-chip. A structured micro LED can be used.

Specifically, the n-type layer 711 of the micro LED 710 is disposed to overlap the reflective layer 723 on the first adhesive layer 717. The n-type layer 711 may be formed by injecting n-type impurities into gallium nitride having excellent crystallinity. The active layer 712 is disposed on the n-type layer 711. The active layer 712 is a light emitting layer that emits light from the micro LED 710, and may be formed of a nitride semiconductor, for example, indium gallium nitride. The p-type layer 713 is disposed on the active layer 712. The p-type layer 713 may be formed by injecting p-type impurities into gallium nitride. However, the constituent materials of the n-type layer 711, the active layer 712, and the p-type layer 713 are not limited thereto.

The p-electrode 714 is disposed on the p-type layer 713 of the micro LED 710. In addition, an n-electrode 715 is disposed on the n-type layer 711 of the micro LED 710. The n-electrode 715 is spaced apart from the p-electrode 714. Specifically, in the micro LED 710, the n-type layer 711, the active layer 712, and the p-type layer 713 are sequentially stacked, and a predetermined portion of the active layer 712 and the p-type layer 713 is etched, n It may be manufactured by forming the electrode 715 and the p-electrode 714. At this time, a predetermined portion is a space for separating the n-electrode 715 and the p-electrode 714, and a predetermined portion can be etched so that a portion of the n-type layer 711 is exposed. In other words, the surface of the micro LED 710 where the n-electrode 715 and the p-electrode 714 are to be disposed may have different height levels than the planarized surface. Accordingly, the p-electrode 714 is disposed on the p-type layer 713, the n-electrode 715 is disposed on the n-type layer 711, and the p-electrode 714 and the n-electrode 715 have different height levels. In spaced apart from each other. Accordingly, the n-electrode 715 may be disposed adjacent to the reflective layer 723 compared to the p-electrode 714. In addition, the n-electrode 715 and the p-electrode 714 may be made of a conductive material, for example, a transparent conductive oxide. In addition, the n-electrode 715 and the p-electrode 714 may be made of the same material, but are not limited thereto.

The planarization layer 116 is disposed on the interlayer insulating layer 114 and the first adhesive layer 717. The planarization layer 116 is a layer for planarizing the upper surface of the transistor 150. The planarization layer 116 may be disposed while planarizing the upper surface of the planarization layer 116 in an area other than the area where the micro LED 710 is disposed. At this time, the planarization layer 116 may be composed of two or more layers.

The first electrode 721 and the second electrode 722 are disposed on the planarization layer 116. The first electrode 721 is an electrode that electrically connects the transistor 150 and the micro LED 710. The first electrode 721 is connected to the p-electrode 714 of the micro LED 710 through a contact hole formed in the planarization layer 116. In addition, the first electrode 721 is connected to the drain electrode 154 of the transistor 150 through contact holes formed in the planarization layer 116 and the interlayer insulating layer 115. However, the present invention is not limited thereto, and the first electrode 721 may be connected to the source electrode 153 of the transistor 150 according to the type of the transistor 150. The p electrode 714 of the micro LED 710 and the drain electrode 154 of the transistor 150 are electrically connected by the first electrode 721.

The second electrode 722 is an electrode that electrically connects the micro LED 710 and the common wiring CL. Specifically, the second electrode 722 is connected to the common wiring CL through a contact hole formed in the planarization layer 116 and the interlayer insulating layer 115, and the micro LED is through a contact hole formed in the planarization layer 116 It is connected to the n-electrode 715 of (710). Therefore, the common wiring CL and the n-electrode 715 of the micro LED 710 are electrically connected.

When the stretchable display device 1000 is turned on, voltages of different levels may be applied to the drain electrode 154 of the transistor 150 and the common wiring CL, respectively. A voltage applied to the drain electrode 154 of the transistor 150 may be applied to the first electrode 721, and a common voltage may be applied to the second electrode 722. Voltages of different levels may be applied to the p-electrode 714 and the n-electrode 715 through the first electrode 721 and the second electrode 722, whereby the micro LED 710 may emit light. .

In FIG. 7, the transistor 150 is electrically connected to the p-electrode 714 and the common wiring CL is electrically connected to the n-electrode 715, but is not limited thereto, and the transistor 150 is the n-electrode. 715 and the common wiring CL may be electrically connected to the p-electrode 714.

The bank 117 is disposed on the planarization layer 116, the first electrode 721, the second electrode 722, the data pad 173, and the connection pad 172. The bank 117 is disposed to overlap the end of the reflective layer 723, and a portion of the reflective layer 723 not overlapping the bank 117 may be defined as a light emitting region. The bank 117 may be made of an organic insulating material, and may be made of the same material as the planarization layer 116. In addition, the bank 117 may be configured to include a black material in order to prevent the light emitted from the micro LED 710 from being transmitted to the adjacent sub-pixel SPX to cause color mixing.

The touch panel 200 is disposed on the display panel where the light emitting device configured as described above is the micro LED 710. Even when the light emitting device is made of the micro LED 710, the touch sensing film 220 of the touch panel 200 is disposed to overlap the second substrate 112 of the lower substrate 110, and the touch sensing area TSA is also It may be disposed to overlap the second substrate 112.

As described above, in the stretchable display device 1000 according to an exemplary embodiment of the present invention, the light emitting element may be made of an organic light emitting element, or may be made of a micro LED 710. Since the micro LED 710 is made of an inorganic material rather than an organic material, it has excellent reliability and has a longer lifespan compared to a liquid crystal display device or an organic light emitting device. In addition, the micro LED 710 is a device suitable for being applied to an extra large screen because the lighting speed is fast, the power consumption is low, the impact resistance is strong, the stability is excellent, and the luminous efficiency is excellent to display a high-brightness image. to be. In particular, since the micro LED 710 is made of an inorganic material rather than an organic material, a required encapsulation layer may not be used when using an organic light emitting device. Accordingly, an encapsulation layer that may be damaged, such as easily cracking in the process of stretching the stretchable display device 1000, may be omitted. Accordingly, in the stretchable display device 1000 according to another embodiment of the present invention, the micro LED 710 is used as a display element, and thus the stretchable display device 1000 may be damaged when it is deformed, such as bending or stretching. It is possible to omit the use of an encapsulating layer. In addition, since the micro LED 710 is made of an inorganic material rather than an organic material, the display element of the stretchable display device 1000 according to another embodiment of the present invention can be protected from moisture or oxygen, and has high reliability. Can be excellent

Meanwhile, in the stretchable display device 1000 described above, the connection wiring 180 disposed on the lower substrate 110 of the display panel 100 has been described as having a wave shape, but the connection wiring 180 has a straight shape. You may have In this case, the bending degree of the touch wiring 230 disposed on the touch panel 200 may also have a bending degree different from that of FIG. 4 described above, which will be described in more detail.

8 is an enlarged plan view of an area A according to another embodiment of FIG. 1; 9 is an enlarged plan view of an enlarged partial area of a touch panel in the stretchable display device of FIG. 1.

The structure of one sub-pixel shown in FIGS. 8 and 9 is the same as that of the sub-pixel structure of FIG. 2 except that the shape or curvature of the connection wiring and the curvature of the touch wiring are different. Redundant description of the same reference numerals will be omitted.

First, referring to FIG. 8, the connection wiring 880 disposed on the first substrate 111 of the lower substrate 110 of the display panel 100 may be disposed to have a straight shape. In this case, the connection wiring 880 may be composed of a more flexible material, a base polymer and conductive particles. Specifically, the base polymer of the first connecting wire 881 and the second connecting wire 882 may be formed of an insulating material that can bend or stretch similarly to the first substrate 111. The base polymer may include, for example, silicone rubber such as polydimethylsiloxane (PDMS), elastomer such as polyurethane (PU), and SBS (Styrene Butadiene Styrene). However, it is not limited thereto. Accordingly, when the stretchable display device is bent or stretched, the base polymer may not be damaged. The base polymer may be formed in a manner that a material constituting the base polymer is coated on the first substrate 111 and the second substrate 112 and coated using a slit.

Conductive particles of the first connecting wire 881 and the second connecting wire 882 may be dispersed in the base polymer. Specifically, the first connecting wire 881 and the second connecting wire 882 may include conductive particles dispersed at a constant concentration in the base polymer. The first connection wiring 881 and the second connection wiring 882, for example, after uniformly stirring the conductive particles in the base polymer, the base polymer in which the conductive particles are dispersed is the upper portion of the first substrate 111, It may be formed in a manner of coating and curing under the second substrate 112 and under the adhesive layer, but is not limited thereto. The conductive particles may include at least one of silver (Ag), gold (Au), and carbon (Carbon), but are not limited thereto.

The conductive particles dispersed and disposed in the base polymer of the first connecting wire 881 and the second connecting wire 882 form a conductive path that electrically connects the gate pads disposed on the second substrate 112 adjacent to each other. Can. In addition, conductive particles dispersed and disposed in the base polymer of the first connection wiring 881 and the second connection wiring 882 are formed on the second substrate 112 disposed on the outermost side of the plurality of second substrates 112. A conductive path electrically connecting the gate pad or the data pad and the pad disposed in the inactive area NA may be achieved.

Meanwhile, when the stretchable display device is bent or stretched, the first substrate 111 made of a flexible substrate may be deformed, and the second substrate 112 made of a rigid substrate on which an organic light emitting device is disposed may not be deformed. In this case, when the wiring connecting each pad disposed on the plurality of second substrates 112 is not easily made of a material that is bent or stretched, the wiring may be damaged, such as cracks caused by deformation of the lower substrate. .

In contrast, in the stretchable display device according to another exemplary embodiment of the present invention, the connection wires 880 including the base polymer and the conductive particles may be electrically connected to pads disposed on each of the plurality of second substrates 112. have. The base polymer has a ductility that can be easily deformed. Accordingly, in the stretchable display device according to another exemplary embodiment of the present invention, even if the stretchable display device 1000 is deformed, such as bent or stretched, the connection wiring 880 including the base polymer has a plurality of second substrates ( 112) There is an effect that the region between can be easily deformed.

In addition, in the stretchable display device according to another exemplary embodiment of the present invention, since the connecting wire 880 includes conductive particles, damage such as cracks is not generated even by deformation of the base polymer in the conductive path made of the conductive particles. It may not. For example, when the stretchable display device is deformed, such as bending or stretching, the first substrate 111, which is a flexible substrate, is deformed in regions other than the region where the plurality of second substrates 112, which are rigid substrates, are disposed. Can. At this time, the distance between the plurality of conductive particles disposed on the deformed first substrate 111 may be changed. At this time, the concentration of the plurality of conductive particles disposed on the base polymer to form the conductive path may be maintained high so that an electrical signal can be transmitted even when the distance between the plurality of conductive particles increases. Therefore, even if the base polymer is bent or stretched, the conductive path by the plurality of conductive particles can smoothly transmit an electrical signal, and even if the stretchable display device is deformed, such as bent or stretched, it can transmit an electrical signal between each pad. .

In addition, in the stretchable display device according to another exemplary embodiment of the present invention, since the connection wiring 880 includes the base polymer and the conductive particles, the connection wiring 880 may be arranged in a straight line shape that can achieve the shortest distance. have. That is, the stretchable display device may be implemented even if the connection wiring 880 is not formed in a curved shape.

Meanwhile, when the connection wiring 880 disposed on the first substrate 111 of the display panel 100 has a straight shape, as shown in FIG. 9, the touch base substrate 210 of the touch panel 200 It can be seen that the degree of bending of the touch wiring 930 disposed on the upper surface is relaxed compared to the case illustrated in FIG. That is, when the connection wiring 880 disposed on the display panel 100 has a straight shape, the touch wiring 930 disposed on the touch panel 200 and the connection wiring 180 disposed on the display panel also have a wave shape. It can be seen that the degree of bending of the touch wiring 230 disposed on the touch panel 200 in the case of having it is lower.

As described above, when the connection wiring 880 of the display panel 100 disposed on the stretchable display device according to another embodiment of the present invention has a straight shape, the space occupied by the connection wiring 880 can be minimized. In addition, the bending of the touch wiring 930 may also be alleviated as compared to the case of FIG. 4, so that the formation of the touch wiring 930 may be easier.

Meanwhile, the touch panel 200 included in the above-described stretchable display device has been described as an example in which the touch sensing film 220 is disposed to correspond to the shape of the second substrate 112 of the display panel 100. , The arrangement shape of the touch sensing film 220 is not limited thereto. Accordingly, the arrangement shape of the touch sensing film 220 as described above will be described in more detail with reference to FIGS. 10 and 11 below.

10 is a perspective view of a touch panel of a stretchable display device according to another embodiment of the present invention. 11 is an enlarged plan view of an area C of FIG. 10 enlarged.

The structure of the touch panel shown in FIGS. 10 and 11 is the same as that of the same reference numerals, except that the configuration of the touch sensing film is different from that of the touch panel structures of FIGS. The description is omitted.

10 and 11, the touch sensing film 1020 of the touch panel 200 ′ according to another embodiment of the present invention has a second direction (Y) on a touch base substrate 210 made of a stretchable material. ), that is, the second touch wiring 232 may be arranged in a stripe shape spaced apart at regular intervals in the extended direction. That is, on the touch base substrate 210 of the touch panel 200 ′, an area in which the touch sensing film 1020 is disposed and an area in which the touch sensing film 1020 is not disposed in the second direction Y are alternately arranged. Can. Meanwhile, in FIGS. 10 and 11, the touch sensing film 1020 having a stripe shape is illustrated as being spaced apart at a predetermined distance in the second direction (Y), but is not limited thereto, and has a stripe shape touch. The sensing film 1020 may be disposed at a predetermined interval in the first direction (X).

When the touch sensing film 1020 is disposed in a stripe shape as described above, the area where the first touch wiring 231 and the second touch wiring 232 intersect on the area where the touch sensing film 1020 is disposed is the touch sensing area ( TSA). In this case, the first touch wiring 231 and the second touch wiring 232 may have a straight shape in the touch sensing area TSA and a wave shape in an area other than the touch sensing area TSA. That is, the second touch wiring 232 disposed on the stripe-shaped touch sensing film 1020 may have a shape in which a wave shape and a straight shape are mixed. However, as described above, the shape of the touch wiring 230 is not limited thereto.

As described above, when the touch sensing substrate 1020 disposed on the touch panel 200 of the stretchable display device according to another embodiment of the present invention is arranged in a stripe shape, the touch panel 200 may display the first direction ( Stretching may be possible only with X). However, since the touch sensing substrate 1020 of the touch panel 200 may be disposed in a different shape, various designs of the touch panel 200 may be possible according to a user or designer's use.

Generally, a stretchable display device has a property of being bent or stretched, but cannot be stretched indefinitely. This is because the driving element and the light emitting element such as the thin film transistor disposed on the second substrate 112 of the display panel 100 may be damaged when the number is increased indefinitely. Accordingly, a general stretchable display device has a maximum elongation. Here, the maximum elongation may be defined as a limit that the stretchable display device can be stretched without affecting the driving element or the light emitting element. However, in the case of a user using the stretchable display device, the stretchable display device may not be used in consideration of the maximum elongation. Accordingly, the display element or the like may be damaged by exceeding the maximum elongation of the stretchable display device due to excessive force of the user, and this may cause a problem that the reliability of the stretchable display device is deteriorated. Accordingly, the stretchable display device according to an exemplary embodiment of the present invention may further include a stretching guide frame.

12 is a plan view illustrating a stretchable display device according to another exemplary embodiment of the present invention. 13 is an enlarged plan view of an area D of FIG. 12 enlarged. 14 is a plan view illustrating the display panel of FIG. 12. 15 is a cross-sectional view taken along line a-a' in FIG. 12. FIG. 16 is a plan view showing a state when the stretchable display device of FIG. 12 is stretched.

The stretchable display device illustrated in FIGS. 12 to 16 includes a display panel and a touch panel of the stretchable display device illustrated in FIGS. 1 to 11, and the stretched guide frame is compared with FIGS. 1 to 11. It is more of an added structure. Therefore, since the practical configuration is the same except for the stretching guide frame, the same reference numerals or detailed description of the same configuration will be omitted.

First, referring to FIG. 12, a stretchable display device according to an exemplary embodiment of the present invention is disposed to surround an active panel 500 including a display panel and a touch panel formed to be stretchable, and side surfaces of the active panel 500. Stretched guide frame 600 may be included. In FIG. 12, although the active panel 500 is described as including both the display panel and the touch panel, the present invention is not limited thereto, and is stretchable according to the embodiment of FIG. 12 even when only the display panel is disposed among the display panel and the touch panel. A display device can be applied.

The active panel 500 is a panel capable of sensing an external touch while displaying an image, and may be a panel in which the above-described display panel and the touch panel are combined. Since the active panel 500 includes a stretchable material, it may be stretchable in at least one of the first direction (X) and the second direction (Y) according to the user's purpose.

The active panel 500 includes an active area AA in which an image is displayed and an inactive area NA in which an image is not displayed and is disposed outside the active area AA. That is, the inactive area NA may be disposed in a form surrounding the outer area of the active area AA. The active panel 500 may have a chamfered shape with cut corners. That is, the active panel 500 may have a round shape without sharp edges. Accordingly, when the active panel 500 is stretched by a user, a difference in the Poisson ratio between the outer portion and the center portion due to stress is different.

Referring to FIG. 12, the stretching guide frame 600 is disposed in the first guide frame 610 disposed in the second direction Y of the active panel 500 and in the first direction X of the active panel 500. The second guide frame 620 may be included.

The first guide frame 610 may be arranged to cover a partial area of the active panel 500, that is, the outermost area of the second direction Y. The first guide frame 610 may be disposed so that both ends of the first guide frame 610 have a curved surface so that the corners of the active panel 500 correspond to a round shape.

Referring to FIG. 13, a plurality of locking grooves 611 may be disposed at both ends of the first guide frame 610. The plurality of locking grooves 611 may be disposed with each locking groove 611 spaced apart in consideration of the maximum elongation of the active panel 500. The engaging groove 611 is disposed in the first guide frame 610, the second guide frame 620 disposed in the first direction (X) of the active panel 500 when stretching in the first direction (X) The stretched stretchable display device can be fixed.

12 and 13, the second guide frame 620 may be disposed to cover a portion of the active panel 500, that is, the outermost region of the first direction X. Unlike the first guide frame 610, the second guide frame 620 may be disposed such that both ends have an angular shape. Accordingly, when the stretchable display device is stretched, both ends of the second guide frame 620 are caught in the locking grooves 611 disposed in the first guide frame 610 according to the stretching degree. The stretchable display device can be prevented from being damaged due to overstretching.

Meanwhile, in the exemplary embodiment of the present invention, it is described that the locking groove 611 is formed in the first guide frame 610 so that the end of the second guide frame 620 is caught to prevent overstretching of the stretchable display device. , But is not limited thereto. For example, the first guide frame 610 may be arranged with a fastening shape such as a locking protrusion formed protrudingly rather than with a shape of the locking groove, and a locking groove or a fastening groove corresponding thereto is disposed in the second guide frame 620. This can prevent overstretching of the stretchable display device. In addition, although it has been described that the engaging groove 611 or the engaging projection may be formed in the first guide frame 610, the present invention is not limited thereto, and the engaging groove or the engaging projection may be formed in the second guide frame. The first guide frame may be formed with a fastening shape that can be fastened with a locking groove or a locking protrusion formed in the second guide frame.

The stretching guide frame 600 configured as described above may be connected using a connecting film 1410 as illustrated in FIG. 14.

The connecting film 1410 is a film made of a flexibility material, and the connecting film 1410 is disposed between the active panel 500 and the stretching guide frame 600, so that the active panel 500 and the stretching guide frame ( 600). The connecting film 1410 may be made of an insulating material having flexibility, for example, polyimide (PI), polyacrylate, polyacetate, or the like. In this embodiment, the connection film 1410 is said to be made of an insulating material having flexibility, but is not limited thereto, and is made of a rigid material for improving connection reliability between the active panel 500 and the elongated guide frame 600. It can be made of an insulating material.

Referring to FIG. 15, one end of the connection film 1410 may be connected to the active panel 500 and the other end of the connection film 1410 may be connected to the stretching guide frame 600. One end of the connection film 1410 connected to the active panel 500 may be bonded using a bonding pad (not shown) disposed in the inactive area NA of the active panel 500. At this time, the bonding process is not shown because it can be made at a high temperature, but on the upper surface of the active panel 500, a sub-substrate (not shown) made of a rigid material that is less damaged even at a high temperature process is further positioned at a position corresponding to the placement position of the bonding pad. Can be deployed. On the other hand, when the sub-substrate is not disposed in the inactive region NA of the active panel 500, the bonding process may be performed within a range in which there is no damage to the active panel 500 using a material that can be made even at low temperatures. Can.

15, the stretching guide frame 600 connected to the other end of the connecting film 1410 is a base frame 613, a fixing groove 614 formed inside the base frame 613 is disclosed, the fixing groove 614 It may include a guide hole 616 in which the connecting portion 1410 connected to the fixing portion 615 and the fixing portion 615 disposed therein is guided. On the other hand, in FIG. 15, the first guide frame 610 may be understood to include the above-described configuration, because the cross-sectional view along the line a-a' of FIG. 12 is mainly included, but the second guide frame 620 is also the same. It would be better to understand it as having a structure.

The base frame 613 may be made of a plastic material or a metal material, and the base frame 613 includes a fixing groove 614 and a guide hole 616 to stably receive the fixing part 615 and the connecting film 1410. It can be formed.

The fixing groove 614 is disposed on the outer side of the inner side of the base frame 613, and can receive the fixing portion 615. At this time, the fixing groove 614 may be formed to a size sufficient to accommodate the fixing portion 615 so that the fixing portion 615 cannot be moved.

The fixing part 615 is disposed in the fixing groove 614 and may be connected to a connection film 1410 for connection with the active panel 500. The connection between the active panel 500 and the stretching guide frame 600 may be sturdy without movement by the fixing part 615. The fixing portion 615 may be made of a plastic material or a metallic material, and the fixing portion 615 may be formed with a fastening groove or a connecting portion for connection with the connection film 1410.

The guide hole 616 is a hole through which the connecting film 1410 connected to the fixing portion 615 disposed in the fixing groove 614 is guided. The size or width of the guide hole 616 may have a size in which the connecting film 1410 can be guided.

The stretching operation of the stretchable display device having the stretching guide frame 600 having such a configuration will be described below.

Referring to FIG. 16, when the active panel 500 is stretched in the first direction (X), the second guide frame 620 moves in the first direction, and the second guide frame 620 is stretched by the stretching width desired by the user and then stretched. By fixing the end of the guide frame 620 to be caught in the locking groove 611 of the first guide frame 610, the stretchable display device can be over-stretched to minimize damage to the active panel 500.

The touch panel and the stretchable display device according to various embodiments of the present invention may be described as follows.

The touch panel according to an embodiment of the present invention is made of a stretchable material, a touch base substrate on which a touch sensing area is defined, a first touch wiring disposed in a first direction on the touch base substrate, and the touch panel on the touch base substrate. It may include a second touch wiring disposed in a second direction different from the first direction and a plurality of touch sensing films interposed between the first touch wiring and the second touch wiring and disposed corresponding to the touch sensing area. .

According to another feature of the present invention, each of the plurality of touch sensing films may be disposed corresponding to an area where the first touch wiring and the second touch wiring intersect.

According to another feature of the present invention, each touch-sensitive film may include a touch-based film made of a stretchable material and a touch-sensitive material dispersed and disposed on the touch-base film.

According to another feature of the invention, the touch-sensitive material may be made of at least one of a piezo metal and a piezo polymer.

According to another feature of the present invention, the first touch wiring and the second touch wiring may have a straight shape in an area where the touch sensing film is disposed, and a wave shape in an area where the touch sensing film is not disposed.

The stretchable display device according to an exemplary embodiment of the present invention includes a first substrate made of a stretchable material and a plurality of second substrates made of a rigid material than the first substrate and spaced a predetermined distance on the first substrate. A touch panel including a display panel including a plurality of touch sensing films disposed on the display panel and a touch base substrate corresponding to an area in which a plurality of second substrates and a touch base substrate made of a stretchable material are disposed. It may include.

According to another aspect of the invention, the touch panel is disposed in a first direction on the touch base substrate in a first direction and a plurality of touch sensing films and in a second direction different from the first direction on the touch base substrate. It may further include a second touch wiring.

According to another feature of the present invention, each of the plurality of touch sensing films may be disposed in an area where the first touch wire and the second touch wire cross.

According to another feature of the present invention, each of the plurality of touch sensing films may be formed by dispersing a particle type touch sensing material in a base film made of the same material as the touch base substrate.

According to another feature of the present invention, the first touch wiring and the second touch wiring may have a shape in which a wave shape and a linear shape are mixed.

According to another feature of the present invention, the first touch wiring and the second touch wiring may have a straight shape in an area where the plurality of touch sensing films are disposed.

According to another feature of the present invention, the display panel may further include a connecting wire electrically connecting each of the plurality of second substrates.

According to another feature of the present invention, the connecting wire may have fewer bends than the first touch wire and the second touch wire having a wave shape.

According to another feature of the present invention, a light emitting element for displaying an image and a transistor for driving the light emitting element may be disposed on each of the plurality of second substrates.

According to another feature of the invention, the light emitting device may be any one of an organic light emitting device and a micro LED.

According to another feature of the present invention, the display panel and the touch panel may have a chamfer shape in which corner portions are cut.

The stretchable display device according to another embodiment of the present invention includes a stretchable panel in which an active area displaying an image and an inactive area disposed in an outer area of the active area are defined, and a first guide arranged in a first direction of the panel A plurality of frames and a second guide frame disposed in a second direction different from the first direction of the panel, and a plurality of guide frames arranged in correspondence to the maximum elongation of the panel in one of the first guide frame and the second guide frame The fastening shape of the first guide frame and the second guide frame, the guide frame other than the guide frame on which a plurality of fastening shapes are formed may be formed with a fastening part to be fastened with the plurality of fastening shapes according to the stretching of the panel. have.

According to another feature of the present invention, the panel may include at least one of a touch panel disposed on the display panel and formed to be stretchable and stretchable.

According to another feature of the present invention, the panel may have a chamfered shape in which a corner portion is cut.

According to another feature of the invention, both ends of the first guide frame may be formed to have a curved surface to correspond to the chamfered shape of the panel.

According to another feature of the present invention, the plurality of fastening shapes are disposed on the curved surface, and the plurality of fastening shapes may have any one of a locking groove and a locking projection.

According to another feature of the invention, the panel further comprises a first guide frame and a connecting film disposed between the panel and the second guide frame, the connecting film comprising a panel and a first guide frame and a panel and the second guide frame Can connect each.

According to another feature of the present invention, each of the first guide frame and the second guide frame includes a base frame made of a rigid material, a fixing groove formed by opening an inner part of the base frame, and a fixing portion formed in the fixing groove, The fixing part may be configured to be connected to the connecting film.

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

1000: stretchable display
100: display panel
110: lower substrate
111: first substrate
112: island board
113: buffer layer
114: gate insulating layer
115: interlayer insulating layer
116: planarization layer
117: bank
118: sealing layer
119: adhesive layer
150: transistor
151: gate electrode
152: active layer
153: source electrode
154: drain electrode
160: organic light emitting device
161: anode
162: organic light emitting layer
163: cathode
180, 880: connection wiring
181, 881: first connection wiring
182, 882: second connection wiring
200: touch panel
210: touch base substrate
220: touch sensing film
221: touch base film
222: touch sensing material
230: touch wiring
231: first touch wiring
232: second touch wiring
300: flexible connecting film
310: base film
320: driving IC
400: printed circuit board
500: active panel
600: stretching guide frame
610: first guide frame
611: Jam groove
613: base frame
614: fixed groove
615: fixing part
616: guide hole
620: second guide frame
1410: connecting film

Claims (24)

A touch base substrate made of a stretchable material and having a touch sensing area defined therein;
A first touch wiring disposed in a first direction on the touch base substrate;
A second touch wiring disposed on the touch base substrate in a second direction different from the first direction; And
And a plurality of touch sensing films interposed between the first touch wiring and the second touch wiring and disposed corresponding to the touch sensing area. According to claim 1,
Each of the plurality of touch sensing films is disposed corresponding to an area where the first touch wiring and the second touch wiring intersect, a touch panel. According to claim 2, Each of the touch-sensitive film,
A touch base film made of a stretchable material; And
A touch panel comprising a touch-sensitive material dispersed and disposed on the touch base film. According to claim 3,
The touch sensing material is made of at least one of a piezo (piezo) metal and a piezo polymer, the touch panel. According to claim 1,
The first touch wiring and the second touch wiring have a linear shape in an area where the touch sensing film is disposed, and a wave panel in an area where the touch sensing film is not disposed. A display panel including a first substrate made of a stretchable material and a plurality of second substrates made of a more rigid material than the first substrate and spaced a predetermined distance on the first substrate; And
A touch panel is disposed on the display panel and includes a touch base substrate made of a stretchable material and a plurality of touch sensing films disposed on the touch base substrate corresponding to an area where the plurality of second substrates are disposed. Stretchable display device. The method of claim 6,
The touch panel may include first touch wires disposed in a first direction on the touch base substrate, the plurality of touch sensing films, and second touch wires disposed in a second direction different from the first direction on the touch base substrate. Further comprising, a stretchable display device. The method of claim 7,
Each of the plurality of touch sensing films is disposed in an area where the first touch wiring intersects the second touch wiring, and a stretchable display device. The method of claim 8,
Each of the plurality of touch sensing films is a stretchable display device in which a particle type touch sensing material is dispersed in a base film made of the same material as the touch base substrate. The method of claim 8,
The first touch wiring and the second touch wiring have a shape in which a wave shape and a linear shape are mixed, and a stretchable display device. The method of claim 10,
The first touch wiring and the second touch wiring have a straight shape in an area where the plurality of touch sensing films are disposed. The method of claim 8,
The display panel further includes a connecting wire electrically connecting each of the plurality of second substrates. The method of claim 12,
The connecting wiring has a smaller number of bends than the wave-shaped first touch wiring and the second touch wiring, and is a stretchable display device. The method of claim 6,
A stretchable display device comprising a light emitting element for displaying an image and a transistor for driving the light emitting element are disposed on each of the plurality of second substrates. The method of claim 14,
The light emitting device is any one of an organic light emitting device and a micro LED, a stretchable display device. The method of claim 6,
The display panel and the touch panel have a chamfered shape in which a corner portion is cut, a stretchable display device. A stretchable panel in which an active area displaying an image and an inactive area disposed in an outer area of the active area are defined;
A first guide frame disposed in a first direction of the panel; And
And a second guide frame disposed in a second direction different from the first direction of the panel,
A plurality of fastening shapes disposed in correspondence to the maximum elongation of the panel is formed on one of the first guide frame and the second guide frame,
In the first guide frame and the second guide frame, other guide frames other than the guide frame in which the plurality of fastening shapes are formed are formed with fastening parts for fastening with any one of the fastening shapes according to the stretching of the panel. , Stretchable display. The method of claim 17,
The panel includes a stretchable display panel and at least one of a touch panel formed to be stretchable and disposed on the display panel. The method of claim 17,
The panel has a chamfered shape in which a corner portion is cut, a stretchable display device. The method of claim 19,
Stretchable display device, both ends of the first guide frame is formed to have a curved surface to correspond to the chamfered shape of the panel. The method of claim 20,
A stretchable display device in which the plurality of fastening shapes are disposed on the curved surface. The method of claim 17,
The plurality of fastening shapes have a shape of any one of a locking groove and a locking projection, the stretchable display device. The method of claim 17,
Further comprising a connecting film disposed between the panel and the first guide frame and the panel and the second guide frame,
The connecting film connects the panel and the first guide frame and the panel and the second guide frame, respectively. The method of claim 23,
Each of the first guide frame and the second guide frame,
A base frame made of a rigid material;
A fixing groove formed by opening an inner part of the base frame; And
And a fixing part disposed in the fixing groove,
The fixing portion is connected to the connecting film, stretchable display device.

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