KR101474685B1 - Packaging film for display apparatus and display apparatus comprising the same - Google Patents

Abstract

The present application relates to a packaging film for a display device and a display device including the same. The present invention relates to a display device including a first area corresponding to a front surface of a display panel; And a second region extending from the first region and corresponding to a side surface of the display panel and a side surface of a rear surface element provided on a rear surface of the display panel, . According to the present application, an improved display device can be realized.

Description

TECHNICAL FIELD [0001] The present invention relates to a packaging film for a display device, and a display device including the packaging film. [0002]

The present application relates to a packaging film for a display device capable of implementing an improved display device and a display device including the same.

The display device is useful for various electronic products and the like. For example, devices such as liquid crystal displays (LCDs) are used in various products such as mobile phones, personal digital assistants (PDAs), electronic game machines, monitors, and TVs.

The display device has a display panel for displaying an image. Further, most of the display devices include backside elements provided on the back surface of the display panel. For example, a liquid crystal display (LCD) device includes a backlight unit (BLU) as a backside device.

1 is a cross-sectional view showing an example of a display device according to the related art, which specifically shows a liquid crystal display (LCD) device.

Referring to Fig. 1, a liquid crystal display (LCD) device has a liquid crystal display panel 10 for displaying an image. Generally, the liquid crystal display panel 10 can not emit light itself, and receives light from the outside to realize an image. Accordingly, a backlight unit 20 is provided on the back surface of the liquid crystal display panel 10 as a back surface element.

The backlight unit 20 includes a light source 22 such as a light emitting diode (LED) and a light source 22 for guiding the light of the light source 22 to the liquid crystal display panel 10. [ And a diffusion sheet 26 for diffusing the light emitted from the light guide plate 24. The light guide plate 24 is provided with a light guide plate 24,

In addition, the liquid crystal display panel 10 has a liquid crystal cell layer 12 made of liquid crystal in which light transmittance is changed as an electrical signal is applied. The liquid crystal display panel 10 changes or keeps the polarization direction of the linearly polarized light passing through the liquid crystal according to the arrangement state of the liquid crystal, thereby transmitting or blocking the light. To this end, the liquid crystal display panel 10 has a front polarizer 14 formed on the upper part of the liquid crystal cell layer 12 and a back polarizer 16 formed on the lower part of the liquid crystal cell layer 12.

In addition, a conventional display device including a liquid crystal display (LCD) device and the like includes a molding frame 30 for assembling the respective components. 1, the backlight unit 20 is stacked on the back surface of the liquid crystal display panel 10 and then assembled and fixed through a molding frame 30 made of a resin material.

For example, Korean Patent No. 10-0824866, Korean Patent No. 10-0876236, Korean Patent No. 10-0876248, and Korean Patent No. 10-1178577 disclose techniques related to the above.

However, due to the use of the molding frame 30 as described above, the display device according to the related art has a bezel B and a large area of the bezel B as shown in Fig. There is a problem that a screen on which an actual image is displayed compared to the surface area of the liquid crystal display panel 10 due to the bezel B is reduced.

In addition, the display device according to the related art may have problems such as handling and assembling of the back surface element, that is, the backlight unit 20, and the like. Optical members such as the light guide plate 24 and the diffusion sheet 26 are inserted and fixed in the molding frame 30 and are stacked on the back surface of the liquid crystal display panel 10 and assembled through the molding frame 30 An excessive time is required in the process, and the optical members 24 and 26 may be damaged. In addition, the assembly through the molding frame 30 may have a poor sealability, and a shape of a light beam may be generated. Such a problem causes an increase in cost and yield of the display device, and may adversely affect performance.

Korean Patent No. 10-0824866 Korean Patent No. 10-0876236 Korean Patent No. 10-0876248 Korean Patent No. 10-1178577

Accordingly, the present application provides a packaging film for a display device capable of implementing an improved display device, and a display device including the same.

The present application provides, for example, a packaging film for a display device capable of minimizing a bezel area, and a display device including the same.

In order to achieve the above object,

A first region corresponding to a front surface of the display panel; And

And a second region extending from the first region and corresponding to a side surface of the display panel and a side surface of a backside element provided on a back surface of the display panel.

According to an exemplary embodiment, the packaging film further comprises a third region extending from the second region and corresponding to a backside of the backside element. At this time, the first region is, for example, light transmissive and the second region is, for example, photoperiod. The third area has, for example, an overlap prevention processing section.

In addition,

A display panel;

A rear surface element provided on a rear surface of the display panel; And

And a packaging film for packaging the display panel and the backside element. The packaging film may include a first region corresponding to a front surface of the display panel; And a second area corresponding to a side surface of the display panel and a side surface of the back surface element.

The back surface element includes, for example, an optical element. The optical element includes, for example, a light source; A light guide plate for converting the point light source emitted from the light source into a surface light source; And a diffusion sheet for diffusing light emitted from the light guide plate.

According to the present application, an improved display device can be realized. For example, the bezel area can be minimized. Further, in the manufacturing (assembling) process of the display device, the damage of the components can be prevented, and the process can be simplified.

1 is a cross-sectional view showing an example of a conventional display device.
2 is a cross-sectional view of a display device according to the first embodiment.
3 is a cross-sectional view of the display device according to the second embodiment.
4 is a cross-sectional view of the display device according to the third embodiment.
5 is a plan view (developed view) showing a first embodiment of a packaging film for a display device.
6 is a cross-sectional view taken along line A-A 'in FIG.
7 is a plan view (developed view) showing a second embodiment of a packaging film for a display device.
8 is a plan view (developed view) showing a packaging film for a display device according to a third embodiment.
9 is a plan view (developed view) showing a fourth embodiment of a packaging film for a display device.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

2 to 4 show exemplary embodiments of a display device according to the present application. 5 to 9 show exemplary embodiments of a packaging film for a display device according to the present application.

In the drawings, the same reference numerals as used in the appended drawings denote the same elements in the drawings.

The terms "first "," second ", and "third ", and the like are used herein to distinguish one component from another, and each component is not limited by the terms .

In this specification, the terms indicating directionality, "front side", "side", "rear side" and the like are based on the direction viewed from the observer (viewer) side of the display device unless otherwise specified.

In the present specification, the meaning of "correspondence" includes those corresponding to some or all of the surfaces facing each other.

In this specification, the terms " forming on ", "forming on top "," forming on bottom ", and "forming on side" do not mean only that the constituent elements are laminated directly on each other, And other components are formed between the adjacent layers. For example, "formed on the surface" means that, in addition to the meaning that the second component is formed directly on the first component, a third component is added between the first component and the second component And includes meaning that can be formed.

In the present specification, the term " extending "does not mean that only one component (the first component) extends integrally with the other component (the second component), and two components 1 component and second component) are separate members that are detachable, and may include a case in which the shape itself is extended by the coupling even if it is not integral.

As used herein, "light transmission" may mean that the irradiated visible light has a transmittance above a straight line, for example greater than or equal to 60%, for example greater than or equal to 80%, for example greater than or equal to 90%. As used herein, "light pulsed transmission" may mean that the visible light being irradiated has a transmittance on a straight line of, for example, not more than 40%, for example not more than 30%, for example not more than 20%, for example not more than 10% have.

The present application provides a packaging film for a display device, and a display device including the same. A packaging film for a display device according to the present application (hereafter abbreviated as a 'packaging film') includes a display panel 100 and a backside device 200 mounted on the backside of the display panel 100, do.

The packaging film 300 covers the front surface 101 and the side surface 102 of the display panel 100 and packages the same. At the same time, the packaging film 300 encapsulates at least the sides 202 of the backside element 200 to be packaged. To this end, the packaging film 300 includes a first region 310 corresponding to the front surface 101 of the display panel 100; And a second region 320 that corresponds to a side 102 of the display panel 100 and a side 202 of the backside element 200. The second region 320 extends from the first region 310.

Further, the display device according to the present application includes the packaging film 300 of the present application as described above. Specifically, the display device according to the present application includes a display panel 100; A backside element 200 installed on a rear surface of the display panel 100; And a packaging film 300 for packaging the display panel 100 and the backside device 200.

According to the present application, an improved display device can be realized. The packaging film 300 minimizes the bezel area, for example, by packaging and attaching the display panel 100 and the back surface element 200 to each other. That is, according to the present application, the use of the molding frame 30 (see Fig. 1) is excluded, and a display device having almost no bezel can be realized. Further, according to the present application, problems occurring in the installation of the back surface element 200 and the like are improved. For example, the problems that may occur in handling and assembling of the optical element 200A and the like on the film (or sheet) are improved.

Hereinafter, exemplary embodiments of the present application will be described with reference to the accompanying drawings. In explaining the present application, the packaging film 300 of the present application will be described together with the description of the display device according to the present application.

2 to 4, the display device according to the present application includes a display panel 100, a backside element 200 provided on the back surface of the display panel 100, And a packaging film 300 for packaging the backside device 100 and the backside device 200.

In the present application, the display panel 100 is not particularly limited. In the present application, the display panel 100 may be any as long as it can display an image.

The display panel 100 may include an element that displays an image by changing the light transmittance, for example, or an element that emits light to display an image. The display panel 100 may include a liquid crystal display panel (LCD Panel) for displaying an image through a liquid crystal whose light transmittance is changed, for example; A plasma display panel (PDP) in which a gas discharge occurs between two electrodes, and a phosphor emits light by ultraviolet rays generated by the gas discharge to display an image; And an organic electroluminescent display panel in which an organic light emitting diode (OLED) emits light to display an image by electrical excitation applied from an electrode.

2 to 4 illustrate an exemplary form of the display panel 100. In FIG. Figures 2-4 specifically illustrate a liquid crystal display (LCD) panel.

2 to 4, the display panel 100 includes at least one liquid crystal cell layer 120 and a polarizer formed on both sides of the liquid crystal cell layer 120, A front polarizer 140 formed on the upper portion of the liquid crystal cell layer 120 and a back polarizer 160 formed on the lower portion of the liquid crystal cell layer 120.

The liquid crystal cell layer 120 may include a thin film transistor (TFT) substrate, a color filter substrate facing the TFT substrate, And a liquid crystal cell in which the light transmittance is changed as an electrical signal is applied.

The front (upper) polarizing plate 140 and the rear (lower) polarizing plate 160 may have polarizing properties, and their optical axes may be orthogonal to each other. For example, the optical axis of the front polarizer 140 may be the longitudinal direction of the display panel 100, and the optical axis of the back polarizer 160 may be the lateral direction of the display panel 100. In one example, the front polarizer 140 and the rear polarizer 160 may each include a polarizer and a protective film formed on one or both sides of the polarizer. The polarizer can be selected, for example, from a polarizing polyvinyl alcohol (PVA) film. The protective film may be a film containing at least one selected from, for example, triacetyl cellulose (TAC) and acrylic resin. In addition, a pixel electrode or the like for driving a pixel may be formed in the display panel 100, and is not shown in the drawings.

The display panel 100 may further include a functional film or layer other than the liquid crystal cell layer 120, the front polarizer 140, and the back polarizer 160. The display panel 100 may further include, for example, a light diffusion layer, a viewing angle compensation film, a retardation film, an antireflection layer, an antiglare layer and / or a protective film layer for protecting them. These films or layers may be formed on the front polarizer 140 or the back polarizer 160, for example.

For example, at least one functional layer selected from a light diffusion layer, an antireflection layer, an antiglare layer, and a protective film layer for protecting the light diffusion layer, the antiglare layer, and the like may be further formed on the front polarizer 140. The functional layer may be laminated on the front polarizing plate 140 as a separate member, or may be formed directly on the upper surface of the front polarizing plate 140. For example, the anti-glare layer may be formed directly on the upper surface of the front polarizer 140 through a surface treatment such as a haze treatment.

In the present application, the back surface element 200 is not particularly limited as long as it is provided on the back surface of the display panel 100. The backside element 200 may be composed of one member or may have a multi-layer structure including two or more members. The shapes and functions of the members constituting the back surface element 200 are not limited. The backside element 200 may have, for example, a film, sheet, plate, and / or shape of a three-dimensional device. For example, the backside element 200 may include an electric / electronic element having an electric / electronic function; An optical element having an optical function; And / or a heat dissipation element having a heat dissipation function.

2 illustrates an example of a backside element 200 constituted by one member. At this time, the back surface element 200 shown in FIG. 2 can be selected from, for example, the optical element 200A, the electronic circuit board, the heat sink, and the like. As a specific example, the backside element 200 can be selected from the optical element 200A.

In the present application, the optical element 200A is not limited as long as it has an optical function. In the present application, the optical element 200A can be exemplified by, for example, an element having functions such as light diffusion, light collection, polarization, and / or reflection, but is not limited thereto. Further, the optical element 200A may include a light source that generates light. In the present application, the optical element 200A includes a light source for generating light, and / or any kind of apparatus, film, and / or sheet used for processing light.

The optical element 200A may be at least one selected from a light guide plate, a diffusion sheet, a brightness enhancement film, a prism film, a lens film, a polarizing film, a reflection film, a viewing angle compensation film, a retardation film, And may include an optical member 200a.

In addition, the optical element 200A may be selected from a light source assembly that further includes a light source 240 in the optical member 200a as illustrated above. In the present application, the specific form of the light source assembly is not particularly limited, and may be selected, for example, from a conventional direct-type or edge-type light source assembly or the like. As a specific example, the light source assembly as optical element 200A can be selected from a backlight unit (BLU) commonly used in liquid crystal display (LCD) devices.

In Figs. 3 and 4, a multilayered optical element 200A is illustrated as the backside element 200. Fig. 3 shows an optical element 200A including a plurality of optical members 200a and FIG. 4 includes a plurality of optical members 200a and a light source 240 The optical element 200A shown in Fig.

Referring to FIG. 3, the optical element 200A includes an optical member 200a, which includes a light guide plate 210 for converting a point light source emitted from a light source into a surface light source; And a diffusing sheet 220 formed on the light guide plate 210 and diffusing light emitted from the light guide plate 210. In addition, the optical element 200A may further include a brightness enhancement film 230 formed on the diffusion sheet 220. Each of the optical members 200a may be formed of one layer or two or more layers. 3 illustrates a case where the brightness enhancement film 230 is formed in two layers. Such an optical element 200A is packaged by the packaging film 300 as shown in FIG. 3, and is installed on the rear surface of the display panel 100. 3, the light source for supplying the light to the light guide plate 210 is not shown, but the light source may be separately provided outside the light guide plate 210 to supply light to the light guide plate 210, for example.

4, the optical element 200A includes a plurality of optical members 200a and a light source 240 which form an assembly to be packaged together with the display panel 100 by the packaging film 300 have. Specifically, the optical element 200A is a light source assembly including a light source 240, which includes at least one light source 240; A light guide plate 210 formed on the light source 240 and converting the point light source emitted from the light source 240 into a surface light source; And a diffusion sheet 220 formed on the light guide plate 210 and diffusing light emitted from the light guide plate 210. As shown in FIG. 4, the optical element 200A may further include a brightness enhancement film 230 formed on the diffusion sheet 220. FIG.

In the present application, the light source 240 is not limited as long as it can emit light, and may be selected from, for example, a light emitting diode (LED) or the like.

The packaging film 300 packages the display panel 100 and the backside element 200 as described above. At this time, when the optical element 200A is packaged as the backside element 200, the light source 240 is not packaged by the packaging film 300 as shown in FIG. 3, 200a. ≪ / RTI >

The packaging film 300 includes a first region 310 and a second region 320 extending from the first region 310. The first area 310 corresponds to the front surface 101 of the display panel 100. And the second region 320 corresponds to the side 102 of the display panel 100 and the side 202 of the backside element 200. [ 4, the second region 320 includes a first flap 321 extending from the first region 310, a second flap 321 extending from the first flap 321, 322, second flap). The first flap 321 corresponds to the side 102 of the display panel 100 and the second flap 322 corresponds to the side 202 of the backside element 200.

The packaging film 300 further includes a third region 330 preferably for a rigid fixation of the display panel 100 and the backside element 200. The third region 330 extends from the second region 320 and corresponds to the backside 203 of the backside element 200. 5 to 9 illustrate exemplary embodiments of a packaging film 300. FIG.

At least the first region 310 and the second region 320 of the packaging film 300 may have the same or similar areas as the corresponding portions of the regions 310, 320 and 330 of the packaging film 300. For example, the area of the first area 310 may be the same as or similar to the area of the front surface 101 of the display panel 100. The area of the second region 220 may be the same as or similar to the sum of the area of the side surface 102 of the display panel 100 and the area of the side surface 202 of the back surface element 200. The area of the first flap 321 is equal to or similar to the area of the side 102 of the display panel 100 and the area of the second flap 322 is equal to the area of the side 202 of the backside device 200 Or similar.

In addition, the second region 320 may be two or more. The second region 320 may be, for example, two to four. That is, the second region 320 may extend from the first region 310, and may extend from at least two of four sides of the first region 310. Also, the third area 330 may be, for example, two to four, which may be the same as the number of the second areas 320. For example, three second regions 320 are formed in FIG. 5, and a third region 330 is also shown in a similar manner.

In the present application, the packaging film 300 is not limited as long as it further includes the first region 310 and the second region 320, and preferably the third region 330 as described above. In addition, each of the regions 310, 320, and 330 may be integrally formed. The packaging film 300 is cut so that a single film has the regions 310, 320 and 330 as described above so that a separate joint between the regions 310, 320, Can be integrally formed without addition.

The packaging film 300 may be selected from a resin film, and the kind of the resin film is not limited. The packaging film 300 may be formed of a material such as polycarbonate, polyester, polyolefin, cyclo-olefin polymer, acrylic, urethane, epoxy, polyamide, And derivatives thereof, and the like can be used. For example, the packaging film 300 may be a polycarbonate (PC) film, a polyethylene terephthalate (PET) film, a polyethylene naphthalate (PEN) film, a polybutylene terephthalate (PBT) film, a polybutylene naphthalate ) Film, a polyethylene (PE) film, a polypropylene (PP) film, a cyclic polyethylene (PE) film, a cyclic polypropylene (PP) film, an acrylic film, a triacetylcellulose (TAC) film and / But are not limited thereto. For example, the packaging film 300 may be a non-oriented polycarbonate (PC) film or a non-oriented polyethylene terephthalate (PET) film or the like. .

The packaging film 300 may be selected from a light-transmitting film. The packaging film 300 may have optical properties such as polarization, light collection and / or diffusion depending on the case. At least the first region 310 may have such optical properties. In this case, it may be useful for packaging of the optical element 200A.

Also, the packaging film 300 may be selected from an isotropic film. In the present application, the isotropy means that there is only a phase difference that does not have a phase difference or is very small even in the presence of a phase difference and does not substantially affect the phase of light passing through the film.

The packaging film 300 may have a planar phase difference (Rin) of, for example, 30 nm or less. If the retardation phase difference Rin exceeds 30 nm, it may affect the phase of light passing through the film 300. For example, the packaging film 300 may have a retardation (Rin) in the plane direction calculated by the following equation (1) to be 30 nm or less, 25 nm or less, or 10 nm or less, and specifically 0 to 25 nm, 0 to 10 nm, 0.1 to 5 nm, 0.2 to 3 nm, or 0.5 to 2 nm.

In addition, the packaging film 300 may have a thickness direction retardation (Rth) of, for example, 35 nm or less. If the thickness direction retardation (Rth) exceeds 35 nm, it may affect the phase of light passing through the film (300). The packaging film 300 may have a thickness direction retardation (Rth) calculated by, for example, the following formula (2): 35 nm or less, 30 nm or less, 20 nm or less, 10 nm or less, To 30 nm, 0 to 20 nm, 0 to 10 nm, 0.1 to 5 nm, or 0.2 to 3 nm. In this application, the phase difference (Rin) (Rth) is an absolute value.

[Equation 1]

Rin = dx (nx - ny)

In the above Equation 1, Rin is the retardation in the plane direction, d is the thickness of the packaging film 300, nx is the refraction index in the slow axis direction of the packaging film 300 with respect to light having a wavelength of 400 to 600 nm, Axis refractive index of the packaging film 300 with respect to a wavelength of 400 to 600 nm.

&Quot; (2) "

Rth = dx (ny - nz)

Dy is the thickness of the packaging film 300, ny is the refractive index in the fast axis direction of the packaging film 300 with respect to light having a wavelength of 400 to 600 nm, nz is the refractive index in the fast axis direction of the packaging film 300, Is the refractive index in the thickness direction of the packaging film 300 with respect to the wavelength of 400 to 600 nm.

The packaging film 300 may be made of, for example, a non-oriented polycarbonate film, a non-oriented polyester film, a non-oriented acrylic film, a non-oriented triacetylcellulose film, and / Polyolefin-based films, and the like.

When the display panel 100 and the backside element 200 are packaged, the regions 310, 320, and 330 are bent at the boundaries C1 and C2. In the drawing, the boundary lines C1 and C2 between the regions 310, 320 and 330 are indicated by dotted lines. At this time, each of the boundary lines C1 and C2 is shown for convenience of explanation, and it may be displayed substantially on the packaging film 300 or not.

When the display panel 100 and the backside device 200 are packaged using the packaging film 300, the first area 310 is first positioned at a position corresponding to the front face 101 of the display panel 100 The second region 320 is bent at the first boundary line C1 so that the second region 320 is exposed to the side surface 102 of the display panel 100 and the side surface 202 of the rear surface element 200, Respectively. When the third region 330 is further included, the third region 330 may be bent at the second boundary line C2 so that the third region 330 may contact the rear surface 203 of the rear surface element 200, And then packaged.

According to an exemplary embodiment, the packaging film 300 may have adhesion to the display panel 100 and the backside element 200. The adhesive force may be, for example, at a contact interface with each other. The attachment method is not particularly limited, and may be performed, for example, by applying a thermal and / or optical laminating method. For example, the packaging film 300 may be heat-sealed and fused, or may be fused to each other by light irradiation to be mutually attached. In the attachment through the laminating method, the irradiation condition of heat and light may be appropriately selected depending on the type of the packaging film 300, and is not particularly limited.

The packaging film 300 may be adhered to the display panel 100 and the backside element 200 at one or more selected from the second region 320 and the third region 330, for example.

According to another exemplary embodiment, the packaging film 300 may be adhered to the display panel 100 and the backside element 200 through separate attachment means. The attaching means may include a pressure sensitive adhesive layer (not shown) formed between the packaging film 300 and the display panel 100, for example, and / or between the packaging film 100 and the backside device 200 have.

The pressure-sensitive adhesive layer may be formed on the contact interface between the packaging film 300 and the display panel 100 and / or the contact interface between the packaging film 300 and the back-surface element 200 so as to achieve a bonding force therebetween . The pressure sensitive adhesive layer may be coated on the packaging film 300 or may be coated on the display panel 100 and the backside device 200. For example, the pressure-sensitive adhesive layer may be formed on at least one selected from at least the second region 320 and the third region 330. More specifically, the pressure-sensitive adhesive layer is formed on the inner side of at least the second region 320 and / or the third region 330, that is, the inner side of the display region 320, (100) and the back surface element (200).

In the present application, the pressure-sensitive adhesive layer is not particularly limited as long as it has an adhesive force (adhesive force), and it can be formed, for example, by coating a pressure-sensitive adhesive composition. Further, in the present application, the pressure-sensitive adhesive composition may be selected from, for example, a photocurable and / or thermosetting pressure-sensitive adhesive composition. The pressure-sensitive adhesive composition may include, for example, a monomer or a polymer component. The monomer or polymer component may undergo a curing process to form the base of the pressure-sensitive adhesive layer. The term " polymer " in the present application collectively refers to a compound in which two or more monomers are polymerized, and is used in the meaning including, for example, a component commonly referred to as an oligomer. In the field of the production of a pressure-sensitive adhesive, various monomers or polymer components used for constituting the pressure-sensitive adhesive composition are known, and these components can be used without limitation. The monomer or polymer may be selected from, for example, an acrylic type, a urethane type, and / or an epoxy type.

As described above, the packaging film 300 is bonded at least between the second region 320 and the side surfaces 102 and 202, and / or between the second region 320 and the side surfaces 102 and 202 by a fusion method using heat and / or light, Or between the third region 330 and the back 203.

Further, the attachment means may be, for example, a double-sided or one-sided adhesive tape. At this time, the double-sided adhesive tape may be interposed between the packaging film 300 and the panel 100 / device 200. More specifically, the double-sided adhesive tape may be interposed between the second region 320 and the side surfaces 102 and 202, and / or between the third region 330 and the backside 203. In the case of the one-sided pressure-sensitive adhesive tape, for example, it may be taped at the outer surface of the third region 330 to provide a bonding force with the backside element 200.

A pressure sensitive adhesive layer (hereinafter, referred to as a "second pressure sensitive adhesive layer") may be formed between the display panel 100 and the backside element 200 in order to firmly fix the display panel 100 and the backside element 200 according to an exemplary embodiment.

The second pressure sensitive adhesive layer is, for example, transparent. The second pressure sensitive adhesive layer may be formed by coating a transparent pressure sensitive adhesive composition on the back surface (lower surface in the figure) of the display panel 100 or on the front surface (upper surface in the figure) of the back surface element 200. Further, the second pressure sensitive adhesive layer may be formed between the display panel 100 and the back surface element 200 by a transfer method. The pressure-sensitive adhesive composition constituting the second pressure-sensitive adhesive layer may also be selected from, for example, a photocurable and / or thermosetting pressure-sensitive adhesive composition, and concrete examples thereof may be selected from acrylic, urethane and / or epoxy.

Referring to FIGS. 5 and 6, a notch 350 may be formed on a boundary line C1 between the first and second regions 310 and 320. 6, when the packaging film 300 further includes the third region 330, the notch portion 350 may be formed as a boundary line between the second region 320 and the third region 330 C2. 6 is a sectional view taken on line A-A 'in Fig.

In the present application, the notch portion 350 may be such that the second region 320 and the third region 330 can be easily bended at each of the boundary lines C1 and C2. The notch portion 350 may be formed through a notch process that can generate a thickness step at, for example, the boundary lines C1 and C2. For example, the notch portion 350 may be selected from an osmosis treatment portion formed by pressing the boundary lines C1 and C2 and a half cutting portion formed by half-cutting the boundary lines C1 and C2 . In the present application, the half does not only mean half the thickness of the packaging film 300.

The notch 350 may be formed to a depth of, for example, 1/3 to 2/3 of the thickness of the packaging film 300 by osmosis treatment or half cutting. At this time, if the depth of the notch 350 is less than 1/3, for example, breakage may occur as occasion demands. And if the depth exceeds 2/3, for example bending may be somewhat difficult.

In addition, the notch 350 may be formed continuously along the boundary lines C1 and C2 or discontinuously formed at predetermined intervals. That is, the notch 350 may be formed discontinuously in the form of a dotted line as shown by the boundary lines C1 and C2. For example, the notch 350 may be selected from a plurality of fine holes drilled at predetermined intervals along the boundary lines C1 and C2. In the present application, Is not particularly limited as long as the regions 310, 320, and 330 are easily bended at each of the boundary lines C1 and C2.

In addition, each of the regions 310, 320, and 330 may have a bending strength of, for example, 1.0 gf to 10.0 gf at each of the boundary lines C1 and C2. This bending strength can be set by the notch 350. At this time, if the bending strength is less than 1.0 gf, it may be too easy to bend at the boundary lines C1 and C2 or overlap the regions 310, 320 and 330, which may be inconvenient to handle. If the bending strength exceeds 10.0 gf, the bending process may not be easy. In view of this, each of the regions 310, 320 and 330 may have a bending strength at each of the boundaries C1 and C2 of, for example, 2 to 8 gf, or 3 to 6 gf . The bending strength may mean, for example, a value measured according to ASTM D790 or the like.

In addition, the notch 350 may have an elongation of 50 to 80% of the elongation before forming the notch 350. Specifically, when notch processing (for example, osse processing) is performed on each of the boundary lines C1 and C2, the elongation of the notch 350 may be 50 to 80% of the elongation before the notch processing. For example, assuming that the elongation of the packaging film 300 is two times (= 100%), the elongation of the notch 350 is 50 to 80% Fold (i. E., A stretch of 50 to 80%). If the elongation percentage of the notch portion 350 is out of the above range, for example, the notch portion 350 may not be bendable or may be broken.

The thickness of the packaging film 300 is not particularly limited. The thickness of the packaging film 300 can be variously set in consideration of the supporting force, the bending workability of each of the regions 310, 320, and 330, the handling properties during packaging, and / or the thinning of the film 300 .

According to an exemplary embodiment of the present application, the thickness of the packaging film 300 may satisfy the following equation (3) with the area of the first region 310. [

&Quot; (3) "

T [占 퐉] = 100 x S [m2] + a

In the above Equation 3, T is the thickness (unit: 占 퐉) of the packaging film 300, S is the area (width x length, unit: m2) of the first region 310, and a is the number of 15 to 130 to be. Here, a includes not only integers but also prime numbers.

When the thickness of the packaging film 300 satisfies the formula (3), the supporting force, the bending workability of each of the regions 310, 320 and 330, the handling properties during packaging, and / .

In Equation (3), S is the area of the first region 310, which may also be the front surface area of the backside element 200 corresponding to the first region 310. In another example, S in Equation (3) may be the front surface area of the display panel 100. [ Generally, when a display device such as a TV or a monitor is installed on a wall, the display device may be installed at an angle of about 10 degrees with respect to the wall. At this time, if the thickness of the packaging film 300 is too thin without satisfying the above-mentioned formula (3), the support strength is low and it can be sagged downward or protruded forward. If the thickness of the packaging film 300 is too thick without satisfying the above Equation (3), the bending workability of each of the regions 310, 320, and 330 is lowered due to excessive strength, And it may be disadvantageous for thinning or the like. In consideration of this point, it is preferable that the thickness of the packaging film 300 satisfies the above-described formula (3).

The thickness of the packaging film 300 may vary depending on the area of the first region 310 and the like, but it may be in the range of, for example, 20 μm to 500 μm, 30 μm to 400 μm, or 35 μm to 200 μm .

Also, the packaging film 300 may have at least one mechanical property selected from, for example, (a) a tensile modulus of at least 1,200 MPa, (b) a tensile strength of at least 40 MPa, and (c) Lt; / RTI > In the case of having such physical properties, the display panel 100 and the back surface element 200 can be packaged and favorably supported.

The supporting force of the display panel 100 and the backside element 200 may vary depending on the display panel 100 and the backside element 200. For example, when the tensile elastic modulus is less than 1,200 MPa or the tensile strength is less than 40 MPa, . With this in mind, the packaging film 300 may have a tensile modulus of at least 1,400 MPa, and / or a tensile strength of at least 50 MPa. The upper limit of the tensile modulus and the tensile strength is not particularly limited. The packaging film 300 may have a specific tensile modulus of, for example, 1,200 to 5,000 MPa, 1,400 to 4,000 MPa, 1,600 to 3,000 MPa, 1,800 to 2,500 MPa, or 2,000 to 2,400 MPa. Further, the packaging film 300 may have a tensile strength of, for example, 40 to 200 MPa, 45 to 180 MPa, 50 to 150 MPa, or 60 to 120 MPa.

In addition, if the elongation is less than 20%, for example, handling during packaging may be deteriorated. The upper limit of the elongation is not limited, but may be 200% or less, for example, in consideration of the supporting force depending on the load of the display panel 100 and the rear element 200. In view of this, the packaging film 300 may have an elongation of, for example, 30% to 180%, 40% to 160%, or 60% to 150%.

In the present application, the method of measuring the tensile modulus, tensile strength and elongation is not limited. For example, the tensile modulus and tensile strength can be measured according to a tensile tester commonly used in the field of film production. In the case of the elongation, for example, A is the initial gauge distance of the film 300 in the tensile tester, B is the gauge distance at the time of breaking after stretching, %) = (AB) / A x 100].

In addition, the packaging film 300 may have a small strain for a strong supporting force, a fixing force, and / or a durability. According to another embodiment of the present application, the packaging film 300 may have a strain E according to the following formula (4): 5% or less.

&Quot; (4) "

E (%) = [(L2 - L1) / L1] x 100

L 1 is the initial length (width or length) of the packaging film 300 and L 2 is the length of the packaging film 300 after being left for 24 hours with a load of 3 kg at a temperature of 80 캜. .

As mentioned above, when the display device is installed on a wall surface, the display device may be installed in a form inclined by about 10 degrees from the wall surface. If the strain E of the packaging film 300 according to Equation (4) exceeds 5%, it can be sagged downward or projected forward due to the load of the display device. In consideration of this point, the strain E of the packaging film 300 is preferably 5% or less. More specifically, the packaging film 300 may have a strain E of not more than 4%, not more than 3.5%, not more than 3.2%, not more than 3%, not more than 2.5%, not more than 2%, not more than 1.5%, or not more than 1% Lt; / RTI > The strain E of the packaging film 300 is preferably as close to zero as possible.

The packaging film 300 may have a thickness of 60 mm x 25 mm (width x length) in one example, and when the film is left for 24 hours with a load of 3 kg at a temperature of 80 캜, Length direction) or a degree of stretching in the longitudinal (width) direction is 2 mm or less.

In addition, the packaging film 300 may have an endurance strength of, for example, at least 200 times, at least 300 times, or at least 400 times of an endurance index (MIT) measured by a test prescribed in JIS P8115 Lt; / RTI >

Referring to FIG. 5, the third area 330 may be formed with an overlap prevention processing unit 360. That is, when the third area 330 is bent and attached to the back surface 203 of the rear surface element 200, the third area 330 is provided with the overlap prevention processing section 330 so that the adjacent third areas 330 do not overlap with each other, (360) may be formed.

The overlap prevention processing unit 360 can be selected from the cut-out portion 361 cut at a predetermined angle?, For example. At this time, the angle [theta] of the chamfered portion 361 may be, for example, from 15 degrees to 85 degrees, or from 30 degrees to 60 degrees. More specifically, for example, the angle? Of the incised portion 361 may be 30 degrees or more, or 45 degrees or more. The overlapping portion 361 can be prevented from overlapping with the adjacent third region 330. The angle? Of the cut-out portion 361 in the present application is set such that the extension line a extending in the linear direction in the second region 320 is used as the reference, 3 region 360. The angle?

7 shows another embodiment of the overlap prevention processing unit 360. The overlap prevention processing unit 360 shown in Fig. Referring to FIG. 7, the overlap prevention processing unit 360 can be selected from the cut portion 362 cut and removed to a predetermined length L. FIG. At this time, the length L of the cutting portion 362 may be equal to or greater than the width W ₃₃₀ of the adjacent third region 330, for example. This overlapping with the third area 330 adjacent to the cutting area 362 can also be prevented.

Meanwhile, among the regions 310, 320, and 330, at least the first region 310 has light transmittance (transparency). The first region 310 may have a light transmittance of 80% or more, specifically a light transmittance of 90% or more, 95% or more, or 98% or more, for example.

In addition, according to an exemplary embodiment, an optical layer or another functional layer may be formed on at least one selected from a front surface (upper portion in the drawing) and a rear surface (lower portion in the drawing) of the first region 310. Specifically, one or more functional layers selected from, for example, a light diffusion layer, a viewing angle compensation layer, a retardation layer, an antireflection layer, an antiglare layer and a protective film layer for protecting them are formed on the front surface and / . Such a functional layer may be laminated on the first region 310 as a separate member or formed directly on the upper surface of the first region 310. [ For example, in the case of the light-diffusing layer, a light-diffusing film may be formed on the first region 310. In the case of the antireflection layer, an antireflective material may be coated on the first region 310 . Alternatively, the anti-glare layer may be formed directly on the upper surface of the first region 310 through a surface treatment such as a haze treatment.

In addition, at least the second region 320 among the second region 320 and the third region 330 may have light-transparency. That is, it is preferable that the second region 320 has a light-transmitting property and can prevent light leakage to the side surface. The second region 320 may have a light transmittance of, for example, 10% or less, 5% or less, 1% or less, 0.1% or less, or 0%. According to a more specific form, at least the second flap 322 among the first flap 321 and the second flap 322 of the second region 320 has a light-transmitting property. In this case, it is useful when the back surface element 200 is the optical element 200A.

In the present application, the light-transmittance includes the meaning of light shielding for blocking light, and reflection for reflecting light. The second region 320 may include at least one light-scattering layer selected from, for example, a light-shielding layer and a reflective layer, and the light-scattering layer may be formed on at least the second flap 322 have. Also in the case of the third region 330, it may have the above-mentioned light-transparency.

The light shielding layer may be formed by coating a light shielding material on the second region 320, for example. In addition, the reflective layer may be formed by coating a reflective material on the second region 320, for example. In this application, the term "coating" includes general coatings such as bar coating or spray coating as well as coating methods such as printing or deposition, as well as general coatings .

The materials constituting the light-shielding layer and the reflective layer are not particularly limited. As the light-shielding material, for example, a material having a color such as black can be used. Specific examples of the light-blocking material include inorganic materials selected from carbon black, graphite, iron oxide, azo-based pigment and / or phthalocyanine- And the like. Examples of the reflective material include reflective materials such as metals and metal oxides selected from aluminum, titanium, silica, alumina and / or titania, and the like. These light-shielding and reflective materials may be coated by a printing process in combination with, for example, a binder and / or a solvent. And in the case of metal and metal oxides for reflectivity, can be deposited through deposition.

According to an exemplary embodiment, at least a second region 320 among the regions 310, 320, and 330 includes a moisture barrier barrier layer for blocking external moisture permeation . Specifically, although the packaging film 300 itself has moisture barrier properties, a barrier layer may be further formed in at least the second region 320 for effective blocking of moisture.

It is sufficient that the barrier layer can prevent at least external moisture from penetrating into the display panel 100. To this end, the barrier layer may be formed at a position corresponding to at least the first flap 321 in the second region 320, and it is also possible to prevent water such as moisture from penetrating into the air such as outside air Impermeability (moisture barrier property) and gas impermeability such as air, so as to be able to prevent water vapor permeability.

In the present application, the barrier layer is not particularly limited as long as it has at least moisture barrier property. The barrier layer may be formed on at least one of the inner surface of the second region 320 and the outer surface of the second region 320. Such a barrier layer may include at least one selected from, for example, a moisture-barrier resin layer, a metal thin film layer, and a vapor deposition layer.

The moisture barrier resin layer may be a film layer formed by attaching a moisture barrier resin film to the second area 320 or the side surface 102 of the display panel 100, Or may be a resin coating layer coated on the side surface 102 of the display panel 100 or the display panel 320. The resin composition constituting the moisture barrier resin layer is not limited, and includes a thermosetting type and a light-curing type. In addition, the moisture barrier resin layer may have, for example, one layer or two or more layers.

The moisture barrier resin layer may be formed of a resin such as a styrene resin, a polyolefin resin, a thermoplastic elastomer, a polyoxyalkylene resin, a polyester resin, a polyvinyl chloride resin, a polycarbonate resin, a polyphenylene sulfide resin, A mixture of hydrocarbons, a polyamide resin, an acrylate resin, an epoxy resin, a silicone resin, a fluorine resin, and / or a mixture thereof.

Examples of the styrene resin include styrene-ethylene-butadiene-styrene block copolymer (SEBS), styrene-isoprene-styrene block copolymer (SIS), acrylonitrile-butadiene-styrene block copolymer (ABS) , Acrylonitrile-styrene-acrylate block copolymer (ASA), styrene-butadiene-styrene block copolymer (SBS), styrene homopolymer and / or mixtures thereof. As the olefin-based resin, for example, a high-density polyethylene-based resin, a low-density polyethylene-based resin, a polypropylene-based resin, and / or a mixture thereof may be exemplified. As the thermoplastic elastomer, for example, an ester thermoplastic elastomer, an olefin thermoplastic elastomer and / or a mixture thereof may be used. Among them, a polybutadiene resin and / or a polyisobutene resin may be used as the olefinic thermoplastic elastomer. As the polyoxyalkylene resin, for example, a polyoxymethylene resin, a polyoxyethylene resin and / or a mixture thereof can be exemplified. As the polyester resin, for example, a polyethylene terephthalate resin, a polybutylene terephthalate resin and / or a mixture thereof can be exemplified. As the polyvinyl chloride resin, for example, polyvinylidene chloride and the like can be mentioned. As the mixture of hydrocarbons, for example, hexatriacotane and / or paraffin can be exemplified. As the polyamide-based resin, for example, nylon and the like can be mentioned. As the acrylate resin, for example, polybutyl (meth) acrylate and the like can be mentioned. Examples of the epoxy resin include bisphenol type epoxy resins such as bisphenol A type, bisphenol F type, bisphenol S type and water additives thereof; Novolak types such as phenol novolac type and cresol novolak type; Nitrogen-containing cyclic rings such as triglycidyl isocyanurate type and hydantoin type; Alicyclic type; Fat type; Aromatic types such as naphthalene type and biphenyl type; Glycidyl types such as glycidyl ether type, glycidyl amine type and glycidyl ester type; Dicyclopentane type such as dicyclopentadiene type; Ester type; Ether ester type and / or mixtures thereof. As the silicone resin, for example, polydimethylsiloxane and the like can be mentioned. Examples of the fluororesin include polytrifluoroethylene resin, polytetrafluoroethylene resin, polychlorotrifluoroethylene resin, polyhexafluoropropylene resin, polyfluorinated vinylidene, polyfluorinated vinyl, polyfluoro / RTI > ethylene propylene and / or mixtures thereof.

The resin listed as the component of the moisture barrier resin layer may be grafted with, for example, maleic anhydride, or may be copolymerized with a monomer for producing the resin to be arrayed, or may be modified by other compounds It is possible. Examples of the other compounds include carboxyl-terminated butadiene-acrylonitrile copolymers and the like.

The resin listed as a component of the moisture barrier resin layer may be a resin having a functional group capable of being cured by heat such as a glycidyl group, an isocyanate group, a hydroxyl group, a carboxyl group and / or an amide group, Or an active energy ray such as an epoxide group, a cyclic ether group, a sulfide group, an acetal group and / or a lactone group, Lt; RTI ID = 0.0 > and / or < / RTI > curable functional groups or moieties.

According to an exemplary embodiment, the moisture barrier resin layer may include a polyisobutene resin. The polyisobutene resin is hydrophobic and can exhibit low moisture permeability and low surface energy. Specific examples of the polyisobutene resin include homopolymers of isobutylene monomers; And / or a copolymer obtained by copolymerizing an isobutylene monomer and other monomer capable of polymerization can be used. Here, other monomers capable of polymerization with the isobutylene monomer may include, for example, 1-butene, 2-butene, isoprene, and / or butadiene.

As a component of the moisture barrier resin layer, a base resin having a weight average molecular weight (Mw) of about a degree that can be formed into a film can be used. According to an exemplary embodiment, the weight average molecular weight (Mw) may be in the range of about 100,000 to 2,000,000, 100,000 to 1,500,000 or 100,000 to 100, In the present specification, the term weight average molecular weight (Mw) means a value converted to standard polystyrene measured by GPC (Gel Permeation Chromatograph).

According to another exemplary embodiment, the moisture barrier resin layer may further include a moisture removing agent in addition to the resin component as described above. Thus, the moisture barrier property of the moisture barrier resin layer can be further improved. For example, the moisture removing agent may be dispersed evenly in the moisture barrier resin layer. Here, the evenly dispersed state may mean a state in which the moisture-scavenging agent is present at the same or substantially the same density in any portion of the water-barrier resin layer.

Examples of the moisture removing agent include metal oxides, sulfates, and organic metal oxides. Examples of the metal oxide include magnesium oxide, calcium oxide, strontium oxide, barium oxide, and aluminum oxide. Examples of the sulfate include magnesium sulfate, sodium sulfate, nickel sulfate, and the like. And examples of the organic metal oxides include aluminum oxide octylate and the like.

As the water-scavenging agent, one kind of the above-mentioned components may be used, or two or more kinds may be used. In the case of using two or more kinds of water-removing agents, for example, calcined dolomite and the like may be used.

The moisture scavenger may have an appropriate size. In one example, the average particle diameter of the moisture scavenger may have a size on the order of 10 to 15,000 nm. The moisture removing agent having the above-described range can effectively block moisture. The content of the moisture removing agent may be, for example, in the range of 5 to 250 parts by weight based on 100 parts by weight of the resin that can be used as the water barrier resin layer as described above.

In addition, the moisture barrier resin layer may further include a dispersing agent so that the moisture removing agent can be uniformly dispersed in the resin layer. As the dispersing agent that can be used here, for example, a nonionic surfactant having affinity with a surface of a hydrophilic water-removing agent and having good compatibility with a resin can be used.

The metal thin film layer may be a metal foil having a thickness of, for example, 1 탆 to 300 탆, which may be applied to the second region 320 or the side surface of the display panel 100 (102) to form a barrier layer.

The deposition layer is formed by depositing at least one selected from a metal and a metal oxide, and it is formed on a base film such as a base film such as polyethylene terephthalate (PET), polyethylene (PE) or polypropylene (PP) And then attached to the second region 320 or the side surface 102 of the display panel 100 together with the base film to form a barrier layer.

In the present application, the metal used as the barrier layer, specifically, the metal layer constituting the metal thin film layer or the deposition layer may be aluminum (Al), copper (Cu), nickel (Ni), tin (A single metal or a mixture of single metals) selected from the group consisting of indium (In), silver (Ag), tungsten (W) and iron ), And the like, but are not limited thereto. In the case of the metal oxide which can be used as the deposition layer, for example, aluminum oxide (Al ₂ O ₃ ), silicon oxide (SiO ₂ ), tin oxide (SnO ₂ ), indium oxide (In ₂ O ₃ ) Zinc (ZnO) and the like.

Referring to FIG. 8, a photodeflective processing unit 314 may be formed at the edge of the first region 310. 8, the first region 310 has a main region 312 of light transmittance (transparency), and a light-permeable treatment portion 314 is formed along the periphery of the main region 312 . The light-permeable treatment portion 314 may have a light-permeable property (light-shielding ability), which may be selected, for example, from a print layer formed by printing a light-permeable paint. In addition, the light-transmittance treatment section 314 may be selected from the light-shielding layer and the reflective layer as described above. For example, the light-transparency treatment unit 314 may be formed by coating a light-shielding material (colored material) such as an inorganic material and an organic material selected from carbon black, graphite, iron oxide, azo-based pigment and phthalocyanine-based pigment.

In the case where the light-emitting unit 314 is formed at the magnetic field of the first region 310 as described above, it is possible to completely block the light leakage to the side. The second region 320 may be light-permeable so that the light leakage to the side is prevented. However, when bending the packaging film 300, for example, the second region 320 may not be accurately bent at the boundary lines C1 and C2, A light ray may be generated on the side surface. In addition, in the process of packaging the packaging film 300, the first region 310 may be offset to one side so that the edge of the first region is located on the side surface 202 of the optical element 200A, . In such a case, the light-permeable treatment unit 314 can cut off the light to the side by blocking the light.

The width (W ₃₁₄ ) and thickness of the light-permeable treatment portion 314 are not particularly limited. The width W ₃₁₄ may be, for example, 0.01 mm or more. At this time, when the width W ₃₁₄ is less than 0.01 mm, the tolerance preventing function may be insignificant. The upper limit is not particularly limited, but if the width W ₃₁₄ is excessively large, the screen may be excessively clogged. For example, the upper limit is preferably 10 mm or less. Considering this point, the light-transmitting portion 314 may have a width (W ₃₁₄ ) of, for example, 0.02 mm to 5 mm, and more specifically a width W ₃₁₄ of 0.03 mm to 3 mm have. The area of the photodiode 314 may be, for example, 0.01 to 5% of the total area of the first area 310, more specifically 0.5 to 2%. The thickness of the light-permeable treatment portion 314 may be, for example, 200 占 퐉 or less, specifically 0.01 占 퐉 to 200 占 퐉, or 0.02 占 퐉 to 100 占 퐉, for example.

Referring to FIG. 9, according to an exemplary embodiment, the first region 310 may be provided with a protrusion 315 in which the second region 320 is not extended. 9, the second region 320 may be formed to extend from the first region 310 and have a step 316 without extending from the vertex 310a of the first region 310. In other words, So that the first region 310 may be provided with the protrusion 315. That is, the vertex 310a of the first region 310 may protrude.

In the case where the protrusion 315 is provided as described above, that is, when the first region 310 is provided with the protrusion 315 that does not extend the second region 320, Can be prevented. The thickness of the first region 310 may be different from that of the first region 310 when the second region 320 is bent when the protrusion 315 protruding from the vertex 310a is not present as shown in FIG. Stress may be exerted on the vertex 310a of the vertex 310a. However, when the protrusion 315 is provided as described above, the lifting phenomenon as described above can be prevented.

In addition, the back surface of the first area 310, that is, the surface (lower surface in the drawing) in contact with the display panel 100 may have an uneven surface as the case may be. This uneven surface can prevent fusion of the first area 310 and the display panel 100 after packaging. More specifically, referring to FIG. 3, it is possible to prevent adhesion between the back surface (the lower surface in the drawing) of the first region 310 and the front surface (the upper surface in the drawing) of the front polarizing plate 140 by the uneven surface have.

The uneven surface may be formed in various ways, and may be formed, for example, by a mat process and a haze process. Through such processing, the roughness of the uneven surface, for example, RMS roughness may be 0.1 탆 or more, 0.5 탆 or more, or 1.0 탆 or more. For example, the uneven surface may be a surface having an RMS roughness of 0.1 탆 to 10 탆, 0.5 탆 to 8 탆, or 1.0 탆 to 5 탆. The uneven surface may have a haze of 80% or less, or 70% or less. For example, the uneven surface may be a surface having a haze of 40% to 80% or 50% to 70% or so. In some cases, the uneven surface may be a high hardness surface having a high hardness, for example, a pencil hardness of 1B or more, or 2B or more. For example, the uneven surface may be a surface having a pencil hardness of about 1B to 4B, or about 2B to 4B.

Further, the uneven surface may be formed, for example, through a concavo-convex resin layer. For example, in the process of forming the resin layer, an irregular surface may be formed in the resin layer by an imprinting process or a method of transferring the irregular shape by using a mold, or unevenness may be formed in the resin layer of an appropriate thickness The uneven surface can be formed in the resin layer by including the beads and the like.

The uneven resin layer may include, for example, a room temperature curable type, a moisture curing type, a thermosetting type or a photocurable resin composition in a cured state. In one example, the uneven resin layer may include a thermosetting or photocurable resin composition or a photocurable resin composition in a cured state. The room temperature curable, moisture curable, thermosetting or photocurable resin composition as used herein means a composition which can be induced in the cured state at room temperature or in the presence of appropriate moisture by application of heat or irradiation of an active energy ray .

For example, the resin composition for the uneven resin layer may include an acrylic compound, an epoxy compound, a urethane compound, a phenol compound and / or a polyester compound as a main component. In the above, the "compound" may be a monomeric, oligomeric or polymeric compound.

As another example, an acrylic resin composition excellent in optical properties such as transparency and excellent in resistance to yellowing, for example, a photo-curable acrylic resin composition can be used as the resin composition for the uneven resin layer. Such a photocurable acrylic resin composition may include, for example, an active energy ray polymerizable polymer component and a reactive diluting monomer.

Examples of the polymer component include a component known as an active energy pre-polymerizable oligomer such as urethane acrylate, epoxy acrylate, ether acrylate or ester acrylate, or a monomer such as a (meth) acrylic acid ester monomer or the like Can be exemplified. Examples of the (meth) acrylic acid ester monomer include alkyl (meth) acrylate, (meth) acrylate having an aromatic group, heterocyclic (meth) acrylate or alkoxy (meth) acrylate.

Examples of the reactive diluting monomer which can be contained in the photocurable acrylic composition include monomers having one or more photocurable functional groups such as an acryloyl group or a methacryloyl group. As the reactive diluting monomer, for example, the above (meth) acrylic acid ester monomers, multifunctional acrylates, and the like can be used.

The selection of the above-mentioned components for producing the photocurable acrylic composition, the blending ratio of the selected components and the like are not particularly limited and can be adjusted in consideration of the hardness and other physical properties of the desired uneven resin layer.

In the process of forming the uneven resin layer using the resin composition, unevenness can be formed in the resin layer in an appropriate manner, or the uneven surface can be realized by including beads in the resin layer. In this case, when the beads are included, the beads may have a refractive index that is different from or substantially equivalent to that of the resin layer. When the beads have different refractive indices from the resin layer, a side effect of inducing the diffusion of light through the uneven resin layer can be obtained.

The shape of the beads contained in the irregular resin layer is not particularly limited and may be, for example, spherical, elliptical, polyhedral, amorphous, and / or other shapes. Examples of the specific types of beads include various inorganic or organic beads. Examples of the inorganic beads include silica, amorphous titania, amorphous zirconia, indium oxide, alumina, amorphous zinc oxide, amorphous cerium oxide, barium oxide, calcium carbonate, amorphous barium titanate and / or barium sulfate Examples of the organic beads include particles containing a crosslinked product or a non-crosslinked product of an organic material such as an acrylic resin, a styrene resin, a urethane resin, a melamine resin, a benzoguanamine resin, an epoxy resin and / But is not limited to.

The method of forming the uneven surface on the uneven resin layer without using the bead is not particularly limited. For example, the resin composition may be cured in a state in which the coating layer of the resin composition is brought into contact with a mold having a desired concavo-convex structure, or an uneven surface may be realized through an imprinting method or the like.

In some cases, the resin composition may be formed so that the uneven resin layer has a high hardness, so that the uneven resin layer serves as a hardened layer. In this case, the hardness of the uneven resin layer can be adjusted to have, for example, a pencil hardness in the range described above.

According to another embodiment of the present application, the packaging film 300 may further include a pressure-sensitive adhesive layer as a component part. According to one embodiment, the packaging film 300 according to the present application may have a structure in which a pressure-sensitive adhesive layer is further formed in at least the first region 310. [ A releasing paper may be laminated on the pressure-sensitive adhesive layer. According to another embodiment, the packaging film 300 according to the present application may have a pressure-sensitive adhesive layer for adhesion to the backside element 200, that is, a pressure-sensitive adhesive layer for adhesion to the backside element 200, at least one selected from the second region 320 and the third region 330 And a second pressure-sensitive adhesive layer as shown in Fig. In addition, a releasing paper may be laminated on the second pressure sensitive adhesive layer.

According to another embodiment of the present application, the packaging film 300 may have a single structure in which a protective film is formed on the first region 310 and a pressure-sensitive adhesive layer is formed on the protective film. A release paper may be formed on the pressure-sensitive adhesive layer. At this time, the protective film may be selected from a resin film, which may be selected from a film including, for example, triacetyl cellulose (TAC) and / or acrylic resin. The protective film may have an adhesive force through the first region 310 and the adhesive. The release paper is not particularly limited as long as it can protect the pressure sensitive adhesive layer. For example, a resin film or a paper material having a releasability can be used.

According to the present invention described above, an improved display device is realized. The display panel 100 and the backside element 200 are fixed by packaging through the packaging film 300 to minimize, for example, a bezel area. That is, the use of a molding frame for fixing the display panel 100 and the back-surface element 200 is eliminated, and a free-bezel display device having almost no bezel can be realized.

Also, excessive time consuming and damage to the optical element 200A, which may occur in the handling and assembly of the back-surface element 200, for example, the optical element 200A on the film (or sheet) . In addition, not only the display panel 100, but also the backside element 200 are packaged by the packaging film 300 to block the penetration of moisture, air, and the like from the outside. The optical element 200A is packaged by the packaging film 300 so as to have a sealing property, thereby preventing light scattering.

Examples and Comparative Examples are illustrated below. At this time, the following comparative examples are presented for comparison with the embodiments only, and are not excluded from the scope of the present application.

[Examples 1 to 2 and Comparative Examples 1 to 2]

A screen panel and a backside module (BLU mounting) for implementing a 24-inch monitor were prepared and packaged in a polycarbonate (PC) film. At this time, the thicknesses of the films were made different according to each example and comparative example. Specifically, in the case of Examples 1 and 2, the following formula was satisfied, and the film thickness was 38 占 퐉 (Example 1) and 75 占 퐉 (Example 2). In the case of Comparative Examples 1 and 2, the following formula (3) was not satisfied and the film thickness was 25 占 퐉 (Comparative Example 1) and 250 占 퐉 (Comparative Example 2).

[Mathematical Expression]

T [占 퐉] = 100 x S [m2] + a

(Where T is the thickness (占 퐉) of the PC film, S is the panel area of the monitor (0.165 m2), and a is 15 to 130.)

The packaged monitor was installed on the wall at an angle of about 10 degrees, left at 60 DEG C for 24 hours, and then evaluated for the extent to which the screen panel of the monitor drooped downward. In addition, the evaluation was made as to whether there was a hang-up between the monitor and the film during packaging. The above results are shown in Table 1 below.

         <Degree of Death and Extension> Remarks
Example 1 Example 2 Comparative Example 1 Comparative Example 2 Of PC film
thickness 38 탆 75 m 25 m 250 탆 24-inch monitor
area 0.165㎡ 0.165㎡ 0.165㎡ 0.165㎡ After installing the monitor,
Degree of deflection none none sag
(More than 2 mm) none Lifting phenomenon none none none Excited part
Occur

As shown in Table 1, in the case of Embodiments 1 and 2 in which the relationship between the thickness and the area satisfies the above formula, there is no sagging phenomenon after installation of the monitor, and no lifting phenomenon is found. However, in the case of Comparative Example 1 in which the above formula is not satisfied and the thickness of the monitor is too small, a sagging phenomenon occurs. In Comparative Example 2 in which the thickness is too large, there is no sagging phenomenon, there was.

[Examples 3 to 4 and Comparative Example 3]

Films of different kinds were prepared according to each of the Examples and Comparative Examples, and the strain (E) was measured according to the following equation. At this time, the films according to each of the examples and the comparative examples were all 60 mm x 25 mm (width x length) and 125 m in thickness and were the same in size and thickness and each had a polycarbonate (PC) film (Example 3) (Polyethylene terephthalate (PET) film (Example 4), and polyethylene (PE) film (Comparative Example 3).

[Mathematical Expression]

E (%) = [(L2 - L1) / L1] x 100

(L1 is the initial length of the film (60 mm) and L2 is the extended length after standing for 24 hours with a load of 3 kg at a temperature of 80 占 폚.)

Next, an LCD panel and a back surface module (BLU mounting) for implementing a 55-inch LCD TV were prepared, and they were packaged into films according to each of the Examples and Comparative Examples. Then, the packaged LCD TV was installed on the wall at an angle of about 10 degrees, left at 60 DEG C for 24 hours, and the extent to which the LCD panel protruded forward was evaluated. At this time, 10 persons were allowed to visually observe the degree of protrusion, and a case where less than 1 out of 10 persons were detected as "good" and a case where two or more persons perceived it as "defective" were evaluated. The above results are shown in Table 2 below.

                 <Results of strain evaluation> Remarks
Example 3 Example 4 Comparative Example 3 Types of film PC film
(125 m) PET film
(125 m) PE film
(125 m) Increased length [L2]
(80 캜, 3 kg load) 0.83 mm 0.32 mm 5 mm Strain [E]
1.4% 0.5% 8.3% Degree of protrusion after installation
(After standing at 60 DEG C for 24 hours) Good
(Not all 10) Good
(Not all 10) Bad
(3 out of 10 detected)

As shown in Table 2, in the case of Examples 3 and 4 using a film having a low strain (E), it was found that a phenomenon of spilling out after installation on the wall surface did not occur.

100: display panel 120: liquid crystal cell layer
140: front polarizer 160: back polarizer
200: Rear element 200A: Optical element
200a: optical member 210: light guide plate
220: diffusion sheet 230: luminance enhancement film
240: light source 300: packaging film
310: first area 314: light-permeable treatment part
320: second region 321: first flap
322: second flap 330: third region
350: Notch 360: Overlap prevention processor
361: a corner portion 362: a cutting portion

Claims (25)

delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete A display panel;
A rear surface element provided on a rear surface of the display panel; And
And a packaging film for packaging the display panel and the backside element,
Wherein the packaging film comprises:
A first region corresponding to a front surface of the display panel; And
And a second area extending from the first area and corresponding to a side surface of the display panel and a side surface of a rear surface element provided on a rear surface of the display panel,
Wherein the first region is provided with a protrusion for which the second region is not extended,
Wherein the thickness of the packaging film satisfies the following equation with the area of the first region:
[Mathematical Expression]
T [占 퐉] = 100 x S [m2] + a
In the above Equation 3, T is the thickness (占 퐉) of the packaging film, S is the area of the first region (m2), and a is the number of 15 to 130.
22. The method of claim 21,
Wherein the back surface element includes an optical element.
23. The method of claim 22,
Wherein the optical element comprises:
Light source;
A light guide plate for converting the point light source emitted from the light source into a surface light source; And
And a diffusion sheet for diffusing light emitted from the light guide plate.
24. The method of claim 23,
Wherein the optical element further comprises a brightness enhancement film formed on the diffusion sheet.
22. The method of claim 21,
Wherein a barrier layer having moisture barrier properties is formed on at least one of an inner side surface and an outer side surface of the second region.

Images