KR102190249B1 - Lamination apparatus and lamination method - Google Patents

Abstract

The present invention discloses a lamination apparatus and a lamination method using the same. The present invention includes a body, a support connected to the body, a first roller rotatably coupled to the support according to the movement of the body, and a second coupled to the support so that at least a portion thereof contacts the first roller. Includes rollers.

Description

Lamination apparatus and lamination method TECHNICAL FIELD

Embodiments of the present invention relate to an apparatus and a method, and more particularly, to a lamination apparatus and a lamination method.

Electronic devices based on mobility are widely used. As mobile electronic devices, in addition to small electronic devices such as mobile phones, tablet PCs are widely used in recent years.

Such a mobile electronic device includes a display device to provide visual information such as an image or an image to a user in order to support various functions. Recently, as other components for driving the display device are downsized, the proportion of the display device in the electronic device is gradually increasing, and a structure capable of being bent to have a predetermined angle in a flat state is also being developed.

The display device as described above may be formed in various structures. The display device may include a window that protects the interior from an external impact, and various film members attached to the window. In this case, since the display device is often formed in various shapes as described above, it is a very important problem to accurately attach the film member to the window. In particular, various types of devices have been devised or invented in order to accurately attach the film member to the window, and various studies are also conducted.

The above-described background technology is technical information possessed by the inventors for derivation of the present invention or acquired during the derivation process of the present invention, and is not necessarily known to be publicly known prior to filing the present invention.

Embodiments of the present invention provide a lamination apparatus and a lamination method.

One aspect of the present invention is a body, a support part connected to the body, a first roller rotatably coupled to the support part according to the movement of the body, and at least a part is coupled to the support part so as to contact the first roller It provides a lamination device comprising a second roller that is used.

In addition, the first roller may attach the film member on the window by seating a window on a jig having at least a part of the curvature radius and pressing the film member.

In addition, the first roller may attach the film member to the window while maintaining contact with the second roller.

In addition, the film member may be attached to one of the convex surface of the window or the concave surface of the window.

In addition, the film member may include at least one of a touch screen panel, a display panel, an optical transparent adhesive film, a black matrix film, and a release paper.

In addition, the support portion may include a guide hole for guiding the first roller to move in the longitudinal direction of the support portion.

In addition, the guide hole may be formed in a long hole shape.

In addition, the radius of the second roller may be formed larger than the radius of the first roller.

In addition, the first roller may include a core portion and a cushion portion formed to surround the outer surface of the core portion.

In addition, the thickness of the cushion portion may be formed to decrease from the center of the first roller in the longitudinal direction toward both ends of the first roller.

In addition, the support portion may be coupled to be rotatable in the body.

In addition, the body may include a stopper formed to be stepped, and the support portion may have a stopping protrusion that interferes with the stopper to adjust the rotation angle of the support portion.

In addition, it is installed so as to be inserted into the body, it may further include a rotation angle adjustment unit for rotating the support.

In addition, the rotation angle adjustment unit may further include a buffer member for absorbing the impact of the first roller.

Another embodiment of the present invention includes the steps of seating a window formed of a plurality of radiuses of curvature or a curved surface having a constant radius of curvature on a jig, and arranging and arranging a film member on the window, and the first roller is a second It provides a lamination method comprising attaching the film member to the window by pressing the film member while maintaining contact with the roller, and separating the window to which the film member is attached from the jig.

In addition, in the step of attaching the film member to the window, the rotation angle adjustment unit may adjust the position of the support unit supporting the first roller to adjust the tension acting on the first roller.

In addition, in the step of attaching the film member to the window, the first roller may move along a guide hole formed in the longitudinal direction of the support part.

In addition, in the step of attaching the film member to the window, a buffer member may buffer an impact between the first roller and the film member.

In addition, in the step of attaching the film member to the window, a radius of the second roller is formed larger than a radius of the first roller, so that the second roller may prevent deformation of the first roller.

In addition, the first roller may include a core portion and a cushion portion that surrounds the outer surface of the core portion and decreases in thickness from the center in the longitudinal direction of the first roller toward both ends of the first roller.

Other aspects, features, and advantages other than those described above will become apparent from the following drawings, claims, and detailed description of the invention.

According to embodiments of the present invention, a lamination device and a lamination method may improve productivity by minimizing defects in a manufactured display device.

1 is a plan view showing a lamination device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view illustrating a part of a display device manufactured using the lamination device illustrated in FIG. 1.
3 is a cross-sectional view illustrating the display panel illustrated in FIG. 1.
4 is a cross-sectional view of the lamination device of FIG. 1.
5 is an enlarged view showing an enlarged view of A of FIG. 1.
6A to 6D are cross-sectional views illustrating a lamination method using the lamination apparatus of FIG. 1.
7 is a cross-sectional view showing a modified example of the first roller of FIG. 1.

Since the present invention can apply various transformations and have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. Effects and features of the present invention, and a method of achieving them will be apparent with reference to the embodiments described later in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

In the following embodiments, terms such as first and second are not used in a limiting meaning, but are used for the purpose of distinguishing one component from another component. In addition, expressions in the singular include plural expressions unless the context clearly indicates otherwise. In addition, terms such as include or have means that the features or elements described in the specification are present, and do not preclude the possibility of adding one or more other features or elements in advance.

In addition, in the drawings, the size of components may be exaggerated or reduced for convenience of description. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, and the present invention is not necessarily limited to what is shown.

In the following embodiments, the x-axis, y-axis, and z-axis are not limited to three axes on a Cartesian coordinate system, and may be interpreted in a broad sense including them. For example, the x-axis, y-axis, and z-axis may be orthogonal to each other, but may refer to different directions that are not orthogonal to each other.

When a certain embodiment can be implemented differently, a specific process order may be performed differently from the described order. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order opposite to the described order.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when describing with reference to the drawings, the same or corresponding constituent elements are assigned the same reference numerals, and redundant descriptions thereof will be omitted. .

1 is a plan view showing a lamination device 100 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating a part of a display device 200 manufactured with the lamination device 100 illustrated in FIG. 1. 3 is a cross-sectional view showing the display panel 230 shown in FIG. 2.

1 to 3, the lamination device 100 may be used when the display device 200 is manufactured. In this case, the display device 200 may include a window 210 and a film member (not shown).

The window 210 may be formed as a curved surface having a plurality of radius of curvature. For example, the window 210 is formed as a first curved surface having a first radius of curvature R1 in a longitudinal direction or a width direction, a second curved surface having a second radius of curvature R2, and a third curved surface having a third radius of curvature R3. Can be. In this case, the window 210 may further include a plurality of curved surfaces having curvature radii R4, R5...Rn (where n is a natural number) in addition to curved surfaces having curvature radii R1 to R3.

In addition, the window 210 may be formed as a curved surface having a constant radius of curvature. For example, the window 210 may be formed as a curved surface having a constant radius of curvature R. In addition, the window 210 may have a curved area having a radius of curvature and a flat area formed to be flat. Hereinafter, for convenience of explanation, a case where the window 210 is formed as a curved surface having a constant radius of curvature R at both ends will be described. (See Fig. 2)

Meanwhile, the film member may be formed in various ways. For example, the film member includes a touch screen panel (not shown), a display panel 230, an optically clear adhesive flim (OCA, 220), a black matrix film (not shown), and a release paper (not shown). ) May include at least one of.

In this case, since the touch screen panel is the same as or similar to a general touch screen panel, a detailed description will be omitted. The display panel 230 may include a flexible organic light emitting display panel, a liquid crystal display panel, or the like. In addition, the optically transparent adhesive film 220 is disposed between the display panel 230 and the window 210, and may be attached by the lamination device 100 before attaching the display panel 230. In addition, the optically transparent adhesive film 220 may be manufactured by being attached to the window 210 or the display panel 230. In addition, the black matrix film may be in a state in which black matrix is printed on an adhesive film. The release paper may be a film attached to the window 210 to protect the window 210. In this case, the film member as described above may be formed to be flexible. Hereinafter, for convenience of explanation, when the film member is the display panel 230 and the lamination device 100 applies the display panel 230 to attach the display panel 230 to the optically transparent adhesive film 220 Let's focus on the explanation. In particular, a detailed description will be made focusing on the case where the display panel 230 is an organic light emitting display panel.

The film member as described above may be attached to the convex surface or the concave surface of the window 210. Hereinafter, for convenience of description, the case where the film member is attached to the concave surface of the window 210 will be described in detail.

Meanwhile, the display panel 230 may include a first substrate S and a light emitting unit (not shown). In particular, the display panel 230 may include a thin film encapsulation layer B formed on the light emitting part. In this case, the thin film encapsulation layer B may be formed in a thin film encapsulation form. In addition, the thin film encapsulation layer B may include a second substrate (not shown) in addition to being formed in a thin film encapsulation form. However, in the following, for convenience of description, the case where the thin film encapsulation layer B is formed in a thin film will be described in detail.

The light emitting part may be formed on the first substrate S. In this case, the light-emitting unit includes a thin film transistor (TFT), a passivation layer 231 is formed to cover them, and an organic light-emitting device 238 may be formed on the passivation layer 231.

In this case, the first substrate S may be made of a glass material, but is not limited thereto, and a plastic material may be used, or a metal material such as SUS or Ti may be used. In addition, polyimide (PI) may be used as the first substrate S. Hereinafter, for convenience of description, the case where the first substrate S is formed of polyimide will be described in detail.

A buffer layer 232 made of an organic compound and/or an inorganic compound is further formed on the upper surface of the first substrate S, and may be formed of SiOx(x≥1) or SiNx(x≥1).

After the active layers 233 arranged in a predetermined pattern are formed on the buffer layer 232, the active layer 233 is buried by the gate insulating layer 234. The active layer 233 has a source region 233a and a drain region 233c, and further includes a channel region 233b therebetween.

The active layer 233 may be formed to contain various materials. For example, the active layer 233 may contain an inorganic semiconductor material such as amorphous silicon or crystalline silicon. As another example, the active layer 233 may contain an oxide semiconductor. As another example, the active layer 233 may contain an organic semiconductor material. However, in the following, for convenience of description, the case where the active layer 233 is formed of amorphous silicon will be described in detail.

The active layer 233 may be formed by forming an amorphous silicon film on the buffer layer 232 and then crystallizing it to form a polycrystalline silicon film, and patterning the polycrystalline silicon film. In the active layer 233, the source region 233a and the drain region 233c are doped with impurities according to the type of TFT such as a driving TFT (not shown) and a switching TFT (not shown).

A gate electrode 235 corresponding to the active layer 233 and an interlayer insulating layer 236 filling the same are formed on the upper surface of the gate insulating layer 234.

In addition, after forming a contact hole in the interlayer insulating layer 236 and the gate insulating layer 234, the source electrode 237a and the drain electrode 237b on the interlayer insulating layer 236, respectively, the source region 233a and It is formed to contact the drain region 233c.

A passivation layer 231 is formed on the thin film transistor formed as described above, and a pixel electrode 238a of the organic light emitting diode OLED is formed on the passivation layer 231. This pixel electrode 238a is in contact with the drain electrode 237b of the TFT by the via hole H2 formed in the passivation film 231. The passivation layer 231 may be formed of an inorganic material and/or an organic material, a single layer, or two or more layers, and may be formed as a planarization layer such that the upper surface is flat regardless of the curvature of the lower layer, whereas the curvature of the lower layer It may be formed to be curved along the line. In addition, the passivation film 231 is preferably formed of a transparent insulator so as to achieve a resonance effect.

After the pixel electrode 238a is formed on the passivation layer 231, the pixel defining layer 239 is formed of an organic material and/or an inorganic material to cover the pixel electrode 238a and the passivation layer 231, and It is opened so that the electrode 238a is exposed.

In addition, an intermediate layer 238b and a counter electrode 238c are formed on at least the pixel electrode 238a.

The pixel electrode 238a functions as an anode, and the counter electrode 238c functions as a cathode. Of course, the polarities of the pixel electrode 238a and the counter electrode 238c may be reversed.

The pixel electrode 238a and the counter electrode 238c are insulated from each other by the intermediate layer 238b, and voltages of different polarities are applied to the intermediate layer 238b to emit light from the organic emission layer.

The intermediate layer 238b may include an organic emission layer. As another optional example, the intermediate layer 238b includes an organic emission layer, and in addition, a hole injection layer (HIL), a hole transport layer, and an electron transport layer. And at least one of an electron injection layer. The present exemplary embodiment is not limited thereto, and the intermediate layer 238b may include an organic emission layer and may further include various other functional layers.

Meanwhile, one unit pixel includes a plurality of subpixels, and the plurality of subpixels may emit light of various colors. For example, the plurality of subpixels may include subpixels that emit red, green, and blue light, respectively, and may include subpixels that emit red, green, blue, and white light.

Each of the plurality of subpixels as described above may include an intermediate layer 238b including an organic emission layer emitting light of various colors. For example, the plurality of subpixels includes an intermediate layer 238b including an organic emission layer emitting red, green, and blue light, respectively.

As another example, a plurality of subpixels emitting various colors includes an intermediate layer 238b having an organic light emitting layer emitting light of the same color, for example, white, and converts white light into light of a predetermined color. It may include a color converting layer or a color filter to convert.

The intermediate layer 238b emitting white light may have various structures, for example, the intermediate layer 238b is a light emitting material emitting at least red light, a light emitting material emitting green light, and a light emitting material emitting blue light. It may include a layered structure of materials.

As another example for emitting white light, the intermediate layer 238b may include a mixed structure of a light emitting material emitting at least red light, a light emitting material emitting green light, and a light emitting material emitting blue light. have.

Red, green, and blue are examples, and the present embodiment is not limited thereto. That is, if it can emit white light, it goes without saying that in addition to the combination of red, green, and blue, other combinations of various colors can be used.

Meanwhile, the thin film encapsulation layer (B) as described above may include a plurality of inorganic layers, or may include an inorganic layer and an organic layer.

The organic layer of the thin film encapsulation layer (B) is formed of a polymer, and preferably may be a single film or a laminate film formed of any one of polyethylene terephthalate, polyimide, polycarbonate, epoxy, polyethylene, and polyacrylate. More preferably, the organic layer may be formed of polyacrylate, and specifically may include a polymerized monomer composition including a diacrylate-based monomer and a triacrylate-based monomer. A monoacrylate-based monomer may be further included in the monomer composition. In addition, a known photoinitiator such as TPO may be further included in the monomer composition, but is not limited thereto.

The inorganic layer of the thin film encapsulation layer (B) may be a single layer or a stacked layer including a metal oxide or a metal nitride. Specifically, the inorganic layer may include any one of SiNx, Al2O3, SiO2, and TiO2.

The uppermost layer of the thin film encapsulation layer (B) exposed to the outside may be formed of an inorganic layer to prevent moisture permeation to the organic light emitting device.

The thin film encapsulation layer (B) may include at least one sandwich structure in which at least one organic layer is inserted between at least two inorganic layers. As another example, the thin film encapsulation layer B may include at least one sandwich structure in which at least one inorganic layer is inserted between at least two organic layers. As another example, the thin film encapsulation layer (B) may include a sandwich structure in which at least one organic layer is inserted between at least two inorganic layers and a sandwich structure in which at least one inorganic layer is inserted between at least two organic layers. .

The thin film encapsulation layer B may include a first inorganic layer, a first organic layer, and a second inorganic layer sequentially from the top of the organic light-emitting device OLED.

As another example, the thin film encapsulation layer B may include a first inorganic layer, a first organic layer, a second inorganic layer, a second organic layer, and a third inorganic layer sequentially from the top of the organic light emitting diode OLED.

As another example, the thin film encapsulation layer (B) is a first inorganic layer, a first organic layer, a second inorganic layer, the second organic layer, the third inorganic layer, and the third inorganic layer sequentially from the top of the organic light emitting diode (OLED). It may include an organic layer and a fourth inorganic layer.

A metal halide layer including LiF may be additionally included between the organic light-emitting device OLED and the first inorganic layer. The metal halide layer may prevent damage to the organic light emitting device OLED when the first inorganic layer is formed by a sputtering method.

The first organic layer may have an area smaller than that of the second inorganic layer, and the second organic layer may also have a smaller area than the third inorganic layer.

As another example, the first organic layer may be formed to be completely covered by the second inorganic layer, and the second organic layer may be formed to be completely covered by the third inorganic layer.

4 is a cross-sectional view of the lamination device of FIG. 1, and FIG. 5 is an enlarged view showing an enlarged view of A of FIG. 1.

1, 4, and 5, the lamination apparatus 100 may attach the display panel 230 to the window 210. The lamination device 100 may include a body 10, a support part 20, a first roller 30, a second roller 40, and a rotation angle adjustment part 50.

The body 10 may move by receiving a force from the outside, and the first roller 30 may move according to the movement of the body 10. The body 10 may be fixed to a robot arm (not shown) or a clamp (not shown) unit to receive a driving force. The body 10 may move in the X direction or the Z direction, and the first roller 30 may apply the display panel 230 to attach the display panel 230 to the optically transparent adhesive film 220.

The body 10 may have a first hole 13 at its end to be connected to the support 20. The connection pin 15 is inserted into the first hole 13 and the second hole 25 of the support part 20 so that the support part 20 can rotate in the body 10.

The body 10 may be provided with a stopper 11 capable of limiting the rotation range of the support part 20. The stopper 11 is formed to be stepped, and the stopping protrusion 22 of the support part 20 contacts the stopper 11 to set the rotation range of the support part 20. That is, the stopper 11 may interfere with the movement of the stopping protrusion 22 to adjust the rotation angle of the support part 20.

The body 10 may have an insertion groove 12 formed so that a part of the rotation angle adjustment portion 50 is inserted. The insertion groove 12 may guide the movement of the rotation angle adjustment unit 50. The insertion groove 12 may convert the reciprocating motion of the rotation angle adjustment part 50 into a rotational motion of the support part 20.

The support part 20 may include a base part 21, a stopping protrusion 22, a guide hole 23, a support bar 24, a second hole 25 and a third hole 26.

The base portion 21 may be installed in a pair on both sides of the body 10 to support the first roller 30 and the second roller 40. The stopping protrusion 22 is formed adjacent to the second hole 25 and may contact the stopper 11 to form a rotational range of the support part 20.

The guide hole 23 may be inserted so that the first roller 30 is rotatable. The guide hole 23 may guide the first roller 30 to move in the longitudinal direction of the support part 20. The first roller 30 is movable along the guide hole 23, and the first roller 30 can maintain contact with the second roller 40 and receive force from the second roller 40. have.

When the first roller 30 performs the laminating operation, deformation may easily occur at the center of the first roller 30 in the longitudinal direction. Both ends of the first roller 30 are supported by the support part 20, but the center in the longitudinal direction is not supported, so deformation may occur in the first roller 30. As a result, the first roller 30 cannot uniformly press the display panel 230, and thus a defect may occur in the display device 200.

The guide hole 23 may move the first roller 30 in the longitudinal direction of the support part 20, so that the first roller 30 may be supported by the second roller 40. Since the first roller 30 is supported by the second roller 40 even at the center portion in the longitudinal direction of the first roller 30, the deformation of the first roller 30 can be minimized.

The support bar 24 may be formed to protrude from the support part 20. The support bar 24 is connected to the rotation angle adjustment unit 50, so that the support unit 20 rotates by the movement of the rotation angle adjustment unit 50. A part of the rotation angle adjustment part 50 is inserted into the support bar 24, and the rotation angle adjustment part 50 may be connected to the support bar 24 by a fixing protrusion 24a.

The second hole 25 may be connected so that the connection pin 15 is inserted so that the support part 20 is rotatable in the body 10. In the third hole 26, the second roller 40 is inserted, and the second roller 40 may support the first roller 30.

The first roller 30 is inserted into the guide hole 23 of the support part 20 and may be rotatably coupled to the support part 20 according to the movement of the body. The first roller 30 may contact the display panel 230 and may press the display panel 230 to attach the display panel 230 to the optically transparent adhesive film 220.

When the first roller 30 presses the display panel 230, the first roller 30 may rotate while maintaining contact with the second roller 40. The first roller 30 is supported by the second roller 40 to uniformly transmit a force to a region where the first roller 30 and the display panel 230 contact each other. In addition, the first roller 30 is supported by the second roller 40 to prevent the first roller 30 from being distorted in the rotation axis.

The first roller 30 may include a core portion 31 and a cushion portion 32 formed to surround the outer surface of the core portion 31. The core part 31 may be formed of a metal material, and the cushion part 32 may be formed of an elastic material such as rubber, silicone, urethane, or the like.

The core part 31 and the cushion part 32 may be formed in a cylindrical shape. In this case, the core portion 31 and the cushion portion 32 may be formed to have a size equal to or greater than the width or length of the window 210. In particular, the core part 31 and the cushion part 32 may be disposed in the width direction or the length direction of the window 210 to press the display panel 230.

7 is a cross-sectional view showing a modified example of the first roller 30a of FIG. 1.

Referring to FIG. 7, the first roller 30a may include a core portion 31a and a cushion portion 32a. However, since the core portion 31a is the same as the core portion 31 described above, a description thereof will be omitted or briefly described.

The radius of the first roller 30a may be formed differently according to the longitudinal direction. This is because the thickness of the cushion part 32a is formed differently according to the longitudinal direction of the first roller 30a. The radius of the first roller 30a may be formed to decrease in size from the center in the longitudinal direction toward both ends of the first roller 30a. (d3>d4) That is, the thickness of the cushion part 32a is the first roller It may be formed to become smaller toward both ends of the first roller 30 from the center of the longitudinal direction of (30a).

The cushion part 32a is formed thick in the center of the first roller 30a in the longitudinal direction, so that deformation of the first roller 30a can be minimized. Since the center of the first roller 30a in the longitudinal direction is not supported by the support part 20, it may be relatively easily deformed than both ends of the first roller 30a. The cushion part 32a is formed thick in the center of the first roller 30a in the longitudinal direction to distribute the deformation force formed in the center of the first roller 30a to minimize the deformation of the first roller 30a. In addition, even if the first roller 30a is deformed, the cushion portion 32a formed in the center maintains flatness with both ends, so that a uniform force may be applied to the display panel 230 during the laminating process.

Referring back to FIGS. 1, 4 and 5, the second roller 40 may be connected to the support part 20 so as to be adjacent to the first roller 30. The second roller 40 is installed to be inserted into the third hole 26 and connected to the support part 20. When the first roller 30 presses the display panel 230, the first roller 30 moves along the guide hole 23 and contacts the second roller 40. The second roller 40 may minimize deformation of the first roller 30 by maintaining contact with the first roller 30. In addition, the second roller 40 may rotate in a direction opposite to the rotation direction of the first roller 30 to minimize frictional force generated by the first roller 30 and the second roller 40.

The radius d2 of the second roller 40 may be larger than the radius d1 of the first roller 30. The first roller 30 may be strongly supported by forming a large radius d2 of the second roller 40. In addition, by forming a larger radius d2 of the second roller 40, it is possible to minimize the deformation of the second roller 40 from the applied force by the first roller 30.

The rotation angle adjustment unit 50 may adjust a tension formed in the film member or window 210 pressed by the first roller 30. The rotation angle adjustment unit 50 may be formed in a gas cylinder, a multi-joint column model, or a shape inserted into or withdrawn into a specific hole. However, hereinafter, for convenience of description, the rotation angle adjustment unit 50 will be described centering on a structure in which a part of the rotation angle adjustment unit 50 is inserted into the insertion groove 12 of the body 10.

One side of the rotation angle adjustment part 50 is installed to be inserted into the body 10 so that the other side of the rotation angle adjustment part 50 may be fixed to the support bar 24 of the support part 20. The rotation angle adjustment unit 50 may be inserted into the insertion groove 12 to perform linear motion along the insertion groove 12. The other side of the rotation angle adjustment unit 50 may be inserted into the support bar 24 and coupled by a fixing protrusion 24a.

The rotation angle adjustment unit 50 may change the direction of a force acting between the first roller 30 and the display panel 230. In detail, when the rotation angle adjustment unit 50 is pulled out from the insertion groove 12 when performing the laminating process while pressing the body 10 downward, the support unit 20 rotates counterclockwise to the body 10 And the angle formed by the support part 20 increases. As the angle formed by the body 10 and the support 20 increases, the force applied to the first roller 30 in the X-axis direction increases, and the force applied to the first roller 30 in the Z-axis direction Decreases. That is, it is possible to reduce the force acting between the display panel 230 and the first roller 30 by changing the direction of the force applied to the first roller 30, thereby reducing the deformation of the first roller 30. Can be minimized.

The rotation angle adjustment unit 50 may include a buffer member 52. The buffer member 52 serves to buffer an impact transmitted from the first roller 30 to the rotation angle adjustment unit 50. The buffer member 52 may be formed of a linear spring, a torsion spring, or a rubber column formed to surround the outer surface of the rotation angle adjustment unit 50. However, in the following description, for convenience of explanation, the buffer member 52 is a torsion spring that surrounds the outer surface of the rotation angle adjustment unit 50.

6A to 6D are cross-sectional views illustrating a lamination method using the lamination apparatus 100 of FIG. 1. 6A to 6D illustrate a process in which the lamination device presses the display panel 230 and attaches it to the optically transparent adhesive film 220. However, the present invention is not limited thereto, and a process in which the optically transparent adhesive film 220 is attached to the window 210 may also be applied.

6A to 6D, a method of attaching the display panel 230 to the window 210 by the lamination apparatus 100 may be described.

The lamination device 100 attaches the window 210 mounted on the jig 1 to the optically transparent adhesive film 220 and the display panel 230. The description will focus on the case where both ends of the jig 1 are formed to be curved and some are formed to be flat. The display device 200 may also be formed to be curved at both ends according to the shape of the jig 1 and may be formed to be flat at the center portion.

The display panel 230 is disposed on the optically transparent adhesive film 220, and the lamination device 100 is disposed to contact the display panel 230. For example, if laminating is started at the curved portion of the jig 1, the first roller 30 may be disposed to contact the curved portion of the window 210. The first roller 30 rotates and moves according to the movement of the body 10 to the front of the body 10, and at the same time, the first roller 30 can be applied in the radial direction of the curved portion (FIG. 6A).

The first roller 30 may be applied downward while passing through the flat surface of the window 210 to attach the display panel 230 to the optically transparent adhesive film 220. In detail, the body 10 may be applied downward and forward to apply the first roller 30.

When passing from the curved portion of the window 210 to the flat portion, the force applied to the first roller 30 may be changed by changing the radius of curvature of the window 210. Such a change in force may cause a defect by applying an impact to the display panel 230 or the window 210, and the first roller 30 cannot perform the laminating operation with a uniform force, so the productivity of the display device 200 Can decrease.

The cushion part 32 of the first roller 30 may form a cushioning force to absorb an impact generated by deformation of the force. Since the cushion part 32 has elasticity, it may absorb an impact applied to the first roller 30.

In addition, the first roller 30 may be moved in the longitudinal direction of the support part 20 to minimize impact. When a force is applied to the first roller 30, the cushion unit 32 and the second roller 40 may form an elastic force to reduce the impact. That is, the cushion unit 32 may move the first roller 30 along the guide hole 23 so that the first roller 30 transmits force to the second roller 40. The cushion unit 32 may absorb an impact generated by a force applied to the first roller 30 due to a cushioning action generated between the second rollers 40.

In addition, the rotation angle adjustment unit 50 may move to rotate the support unit 20 to absorb the shock generated by the deformation of the force. The rotation angle adjustment part 50 may move along the insertion groove 12 to rotate the support part 20 within a certain range. When the rotation angle adjustment part 50 is withdrawn from the insertion groove 12, the support part 20 may move in a counterclockwise direction. When the support part 20 moves, the force that the first roller 30 acts on the display panel 230 moves toward the X direction. That is, the magnitude of the force that the first roller 30 exerts on the display panel 230 in the Z direction decreases, and the magnitude of the force that the first roller 30 moves in the X direction increases, so that the display panel 230 You can reduce the impact applied to it.

In addition, the shock absorbing member 52 of the rotation angle adjustment unit 50 may absorb the impact of the first roller 30 to reduce the impact applied to the display panel 230 (FIG. 6B).

When the first roller 30 passes from the flat portion of the window 210 to the curved portion, the force applied to the first roller 30 may be changed by changing the curvature of the window 210. As described above, the lamination device 100 absorbs the impact applied to the display panel 230 to minimize defects in the display panel 230, thereby improving productivity and preventing deformation of the first roller 30. There is (Fig. 6c)

The first roller 30 is separated from the display panel 230. When the display panel 230 is attached to the optically transparent adhesive film 220, the body 10 may be moved upward to separate the lamination device 100 from the display panel 230. The rotation angle adjustment part 50 is inserted into the insertion groove 12 so that the support part 20 can rotate clockwise. The stopping protrusion 22 of the support part 20 may be limited in rotation by the stopper 11 of the body 10. (Fig. 6d)

A method of manufacturing the display device 200 using the lamination device 100 may include the following steps.

The window 210 may be seated on the jig 1. The window 210 may be manufactured to be flat before being mounted on the jig 1, and after removing the protective film of the window 210, the window 210 may be aligned with the jig 1. Thereafter, the window 210 may be laminated with the lamination device 100 described above to be seated on the jig 1.

The optically transparent adhesive film 220 may be attached to the window 210. The protective film of the optically transparent adhesive film 220 may be removed and aligned with the window 210. Thereafter, the optically transparent adhesive film 220 may be laminated with the lamination device 100 and attached to the window 210. However, in the case where the optically transparent adhesive film 220 is attached to the window 210 or manufactured by attaching the optically transparent adhesive film 220 to the display panel 230, this may be omitted.

The display panel 230 may be attached to the optically transparent adhesive film 220. The protective film of the display panel 230 may be removed and aligned with the window 210. Thereafter, the display panel 230 may be laminated with the lamination device 100 described above and attached to the window 210.

After performing the laminating process, the display device 200 is maintained in an environment of high temperature and low pressure, and then reduced to atmospheric pressure at room temperature, so that the display panel 230 may be firmly attached to the window 210.

The lamination device 100 and the lamination method may prevent deformation of the first roller 30. The first roller 30 may uniformly transmit force to the film member so that bubbles do not occur between the window 210 and the film member.

In the lamination device 100 and the lamination method, the first roller 30 may transmit a uniform force to the film member, thereby minimizing defects in the display device 200 to improve productivity.

As described above, the present invention has been described with reference to an embodiment shown in the drawings, but this is only exemplary, and those of ordinary skill in the art will understand that various modifications and variations of the embodiment are possible therefrom. Therefore, the true technical scope of the present invention should be determined by the technical spirit of the appended claims.

10: body 11: stopper
12: insertion groove 20: support
21: base part 22: stop protrusion
23: guide hole 24: support bar
30: first roller 31: core portion
32: cushion portion 40: second roller
50: rotation angle adjustment unit 52: buffer member
100: lamination device 200: display device
210: window 220: optical transparent adhesive film
230: display panel

Claims (20)

Body;
A support part connected to the body;
A first roller rotatably coupled to the support portion according to the movement of the body; And
And a second roller coupled to the support so that at least a portion thereof contacts the first roller. The method of claim 1,
The first roller,
A lamination apparatus for attaching the film member on the window by seating a window on a jig having at least a portion of which has a radius of curvature and pressing the film member. The method of claim 2,
The first roller,
A lamination device for attaching the film member to the window while maintaining contact with the second roller. The method of claim 2,
The film member,
A lamination device attached to one of the convex side of the window or the concave side of the window. The method of claim 2,
The film member,
A lamination device comprising at least one of a touch screen panel, a display panel, an optical transparent adhesive film, a black matrix film, and a release paper. The method of claim 1,
The support part,
And a guide hole for guiding the first roller to be movable in the longitudinal direction of the support. The method of claim 6,
The guide hole is formed in a long hole shape, lamination device. The method of claim 1,
The second roller has a radius greater than that of the first roller. The method of claim 1,
The first roller,
Core part; And
Comprising, a lamination device comprising a; a cushion portion formed to surround the outer surface of the core portion. The method of claim 9,
The thickness of the cushion part,
A lamination device that decreases from the center of the first roller in the longitudinal direction toward both ends of the first roller. The method of claim 1,
The support part,
A lamination device that is coupled to be rotatable in the body. The method of claim 11,
The body has a stopper formed to be stepped,
The support portion is interfered with the stopper to adjust the rotation angle of the support portion, having a stopping protrusion, lamination device. The method of claim 1,
It is installed to be inserted into the body, rotating the support, a rotation angle adjustment unit; further comprising, lamination device. The method of claim 13,
The rotation angle adjustment unit,
The lamination device further comprising; a buffer member for absorbing the impact of the first roller. Mounting a window formed of a plurality of radiuses of curvature or a curved surface having a predetermined radius of curvature on the jig;
Arranging and arranging the film member on the window;
Attaching the film member to the window by pressing the film member while maintaining the first roller in contact with the second roller; And
Including, lamination method; separating the window to which the film member is attached from the jig. The method of claim 15,
Attaching the film member to the window,
A lamination method for controlling a tension acting on the first roller by adjusting a position of a support portion supporting the first roller by a rotation angle adjustment unit. The method of claim 16,
Attaching the film member to the window,
The first roller moves along a guide hole formed in the longitudinal direction of the support part. The method of claim 16,
Attaching the film member to the window,
The lamination method, wherein a buffer member buffers an impact between the first roller and the film member. The method of claim 15,
Attaching the film member to the window,
The lamination method, wherein a radius of the second roller is formed larger than a radius of the first roller so that the second roller prevents deformation of the first roller. The method of claim 15,
The first roller,
Core part; And
A lamination method comprising: a cushioning portion surrounding the outer surface of the core portion and having a thickness smaller toward both ends of the first roller from the center in the longitudinal direction of the first roller.

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