KR20200075489A - Anti-reflection polarizer and organic light emitting display device including the same - Google Patents

Abstract

According to one embodiment of the present invention, provided is an organic light emitting display device, which may include a display panel having a displayed display area and a non-display area around the display. An anti-reflection polarizing plate is positioned on an upper part of the display panel. The anti-reflection polarizing plate may include a linear polarizing plate which transmits only linearly polarized light in a predetermined direction and an anti-reflection structure under the polarizing plate. The anti-reflection structure may include a groove provided in an area corresponding to the non-display area. The groove can be filled with a filler material such as resin.

Description

Anti-reflective polarizing plate and organic light emitting display device including the same {ANTI-REFLECTION POLARIZER AND ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SAME}

The present specification relates to an anti-reflective polarizing plate and an organic light emitting display device including the same.

Recently, as interest in information display has increased and the demand to use a portable information medium has increased, it has been applied to a lightweight flat panel display (FPD) that replaces the existing display device, the cathode ray tube (CRT). Korea's research and commercialization are focused.

In the field of flat panel display devices, a liquid crystal display device (LCD), which is light and low in power consumption, has been the most popular display device so far, but the liquid crystal display device is not a light emitting device, but a light receiving device, and has a brightness and contrast ratio. ratio) and viewing angles, so development of new display devices capable of overcoming these disadvantages has been actively developed.

Since one of the new display devices, the organic light emitting display device is self-emission type, it has a better viewing angle and contrast ratio than a liquid crystal display device. In addition, since a backlight is not required, light weight and thinness are possible, and it is advantageous in terms of power consumption. In addition, there is an advantage that DC low voltage driving is possible and the response speed is fast.

The organic light emitting display device displays an image by arranging sub-pixels having an organic light-emitting diode in a matrix form and selectively controlling the sub-pixels with a data voltage and a scan voltage.

In this case, the organic light emitting display device is divided into a passive matrix method or an active matrix method using a thin film transistor (TFT) as a switching element. Among them, the active matrix method selects a sub-pixel by selectively turning on a TFT, which is an active element, and maintains the light emission of the sub-pixel at a voltage maintained in the storage capacitor.

In such an organic light emitting diode display, a viewer observes video information from a light emitting side. When viewed from an observation direction, various wirings, particularly scan wirings, data wirings and driving current wirings, and various electrodes, especially gate electrodes, are exposed to the field of view. It may be. If external light is reflected by these metal elements, it may interfere with the viewer's observation of the video information. To prevent this problem, a polarizing plate is attached to the outer surface of the substrate.

Since the organic light emitting display device is implemented without a separate light source device, it can be manufactured thinner and lighter than a conventional display device such as a liquid crystal display (LCD). Therefore, the organic light emitting display device is easy to be implemented as a flexible (flexible), bendable (foldable), foldable (foldable) display device can be designed in various forms.

Recently, research has been conducted to apply an organic light emitting display device to a vehicle display device. In order to be applied as a display device for a vehicle, it should be able to manufacture in a 3D shape such as a curved shape as well as a square, round, and oval in accordance with the interior design. Due to this usage environment, research into improving/changing the structure, operation, and functions of the organic light emitting display device for vehicles is also being conducted in depth.

1A is a view showing damage occurring to a polarizing plate when cutting the polarizing plate. After attaching the polarizing plate to the outer surface of the substrate including the display panel, trimming is performed using a laser to fit a desired shape. At this time, during the cutting process, a specific layer of the polarizing plate may be damaged as shown in FIG. 1. The damaged polarizing plate is cracked as in FIG. 1B and deteriorates the display quality of the display device. This causes a decrease in reliability of the display device.

In order to solve the above-mentioned problem, this specification aims to propose a polarizing plate having a new structure so as to provide an organic light emitting display device with improved reliability without cracking in the polarizing plate.

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

In order to achieve the object as described above, the organic light emitting display device according to an exemplary embodiment of the present invention may include a display panel having a display area displaying an image and a non-display area around the display area. An anti-reflection polarizing plate is positioned on the display panel. The anti-reflective polarizing plate may include a linear polarizing plate that transmits only linearly polarized light in a predetermined direction and an anti-reflective structure under the polarizing plate. The anti-reflection structure may include a groove provided in an area corresponding to the non-display area. The groove may be filled with a filler such as resin.

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

The embodiments of the present specification may provide an anti-reflective polarizing plate for an organic light emitting display device capable of preventing cracks that may occur when the anti-reflecting polarizing plate is cut using a laser according to the shape of the display panel. Embodiments of the present specification, by suppressing the crack of the polarizing plate can prevent the degradation of the display quality of the organic light emitting display, it is possible to provide an organic light emitting display with improved reliability.

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

1A to 1B are views illustrating an anti-reflection polarizing plate having cracks on its outer side.
2 is an exploded perspective view schematically illustrating an organic light emitting display device according to an exemplary embodiment of the present specification.
3 is a cross-sectional view illustrating a part of the display panel included in the organic light emitting display device of FIG. 2.
4 is a cross-sectional view illustrating a polarizing plate included in the organic light emitting display device of FIG. 2.
5A is a plan view illustrating an organic light emitting display device according to an exemplary embodiment of the present specification.
5B is a cross-sectional view showing a portion X in FIG. 5A.

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

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

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

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

When an element or layer is referred to as being "on" another element or layer, it includes all cases in which another layer or another element is interposed immediately above or in between.

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

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

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

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

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

2 is a cross-sectional view schematically showing an organic light emitting display device according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the organic light emitting display device 1000 according to an exemplary embodiment of the present invention includes a display panel 100 displaying an image, an anti-reflective polarizing plate 200, a cover member 300 and various mechanical components ( Frame, case, etc.).

The display panel 100 includes at least one active area, and pixels, which are a basic unit of display, are arranged in an array in the display area. One or more inactive areas may be disposed around the display area. That is, the non-display area may be adjacent to one or more side surfaces of the display area. The display area and the non-display area may be in a form (pentagonal, hexagonal, circular, elliptical, etc.) suitable for the design of the electronic device on which the organic light emitting display device 1000 is mounted.

Each pixel in the display area may be associated with a pixel circuit. The pixel circuit may include one or more switching transistors and one or more driving transistors on a backplane. Each pixel circuit may be electrically connected to a gate line and a data line to communicate with one or more driving circuits such as a gate driver and a data driver located in the non-display area. The driving circuit may be implemented as a thin film transistor (TFT) in the non-display area. Such a driving circuit may be referred to as a gate-in-panel (GIP). In addition, some components, such as data driver ICs, are mounted on separate printed circuit boards, and are used for circuit films such as flexible printed circuit board (FPCB), chip-on-film (COF), and tape-carrier-package (TCP). It can be combined with a connection interface (pad/bump, pin, etc.) disposed in the non-display area. The display panel 100 may also include various additional elements for generating various signals or driving pixels in the display area. The additional element may include an inverter circuit, a multiplexer, an electro static discharge circuit, and the like.

The anti-reflective polarizing plate 200 observes video information from a viewer emitting light from the organic light emitting display device 1000. When viewed from an observation direction, various wirings, particularly scan wiring, data wiring and driving current wiring, and various electrodes, The gate electrode may be exposed to the field of view as it is. If external light is reflected by these metal elements, it may interfere with the viewer's observation of the video information. In order to prevent this problem, the anti-reflection polarizing plate 200 may be attached to the upper surface of the display panel 100 by an adhesive (lower side 230 in FIG. 4 ). Details of the anti-reflection polarizing plate 200 will be described below in FIG. 4.

The cover member 300 is on a display surface where a viewer views an image, and is also called a cover window in that the image is transmitted as a kind of transparent film or glass. The cover member 400 is attached to transmit light emitted from the display panel 100 to the outside and to protect the display panel 100 and the anti-reflective polarizing plate 200 thereon. The cover member 300 may include a base layer, a shielding layer, and the like. The base layer may be made of a material having a large Young's modulus, that is, a material having high hardness, in order to reduce cracks due to external impact. However, in the case of a material having a large Young's modulus, it is difficult to be applied to a foldable display device because it breaks without bending when folded or bent. However, even if the material having a large Young's modulus is less than a certain thickness, folding may be possible. For example, when the base layer is made of glass, the base layer may be applied to a foldable display device when the thickness is 0.1 mm or less.

A shielding layer is disposed on the lower surface of the base layer. The shielding layer is disposed overlapping the outer periphery of the display panel 100 and is a component that blocks the components disposed on the outer periphery of the display panel 100 from being viewed from the outside. The shielding layer may be an opaque mask layer such as black ink (eg, a polymer filled with carbon black). For example, the shielding layer may be disposed in an area corresponding to the non-display area of the display panel 100. Since the shielding layer needs to be shielded so that the non-display area is not visible to the user, a minimum thickness is required. For example, the shielding layer may have a thickness of 8 to 20 μm, but is not limited thereto.

3 is a cross-sectional view illustrating a part of the display panel included in the organic light emitting display device of FIG. 2.

In the display panel 100, thin film transistors 102, 104, 106, and 108, organic light emitting devices 112, 114, and 116 and various functional layers are positioned on the base layer 101.

The base layer 101 supports various components of the display panel 100. The base layer 101 may be formed of a transparent insulating material, for example, an insulating material such as glass or plastic. When the base layer 101 is made of plastic, it may be referred to as a plastic film or plastic substrate. For example, the base layer 101 may be in the form of a film containing one selected from the group consisting of polyimide polymers, polyester polymers, silicone polymers, acrylic polymers, polyolefin polymers, and copolymers thereof. Among these materials, polyimide is widely used as a plastic substrate because it can be applied to high temperature processes and is a material that can be coated. The substrate (array substrate) is also referred to as a concept including an element and a functional layer formed on the base layer 101, for example, a switching TFT, a driving TFT connected to the switching TFT, an organic light emitting element connected to the driving TFT, a protective film, and the like. do.

A buffer layer may be located on the base layer 101. The buffer layer is a functional layer for protecting a thin film transistor (TFT) from impurities such as alkali ions flowing out of the base layer 101 or lower layers. The buffer layer may be made of silicon oxide (SiOx), silicon nitride (SiNx), or multiple layers thereof.

A thin film transistor is placed on the base layer 101 or the buffer layer. The thin film transistor may have a form in which the semiconductor layer 102, the gate insulating film 103, the gate electrode 104, the interlayer insulating film 105, and the source and drain electrodes 106 and 108 are sequentially arranged. The semiconductor layer 102 is located on the base layer 101 or the buffer layer. The semiconductor layer 102 may be made of polysilicon (p-Si), in which case a predetermined region may be doped with impurities. Further, the semiconductor layer 102 may be made of amorphous silicon (a-Si), or may be made of various organic semiconductor materials such as pentacene. Furthermore, the semiconductor layer 102 may be made of oxide. The gate insulating layer 103 may be formed of an insulating inorganic material such as silicon oxide (SiOx) or silicon nitride (SiNx), or may be formed of an insulating organic material. The gate electrode 104 may be made of various conductive materials, such as magnesium (Mg), aluminum (Al), nickel (Ni), chromium (Cr), molybdenum (Mo), tungsten (W), gold (Au), or alloys thereof. And the like.

The interlayer insulating layer 105 may be formed of an insulating material such as silicon oxide (SiOx) or silicon nitride (SiNx), or may be formed of an insulating organic material. Selective removal of the interlayer insulating layer 105 and the gate insulating layer 103 may form a contact hole in which the source and drain regions are exposed.

The source and drain electrodes 106 and 108 are formed of a single layer or a multi-layer shape as an electrode material on the interlayer insulating layer 105.

The planarization layer 107 may be located on the thin film transistor. The planarization layer 107 protects the thin film transistor and planarizes the top. The planarization layer 107 may be formed in various forms, such as an organic insulating film such as Benzocyclobutene (BCB) or acrylic (Acryl), or an inorganic insulating film such as a silicon nitride film (SiNx) or a silicon oxide film (SiOx). Various modifications are possible, such as being formed in a single layer or composed of double or multiple layers.

The organic light emitting device may have a shape in which the first electrode 112, the organic light emitting layer 114, and the second electrode 116 are sequentially arranged. That is, the organic light emitting device includes a first electrode 112 formed on the planarization layer 107, an organic light emitting layer 114 positioned on the first electrode 112, and a second electrode located on the organic light emitting layer 114 ( 116).

The first electrode 112 is electrically connected to the drain electrode 108 of the driving thin film transistor through the contact hole. When the display panel 100 is a top emission method, the first electrode 112 may be made of an opaque conductive material having high reflectance. For example, the first electrode 112 may be formed of silver (Ag), aluminum (Al), gold (Au), molybdenum (Mo), tungsten (W), chromium (Cr), or alloys thereof. .

The bank 110 is formed in regions other than the light emitting region. Accordingly, the bank 110 has a bank hole exposing the first electrode 112 corresponding to the emission region. The bank 110 may be made of an inorganic insulating material such as a silicon nitride film (SiNx) or a silicon oxide film (SiOx) or an organic insulating material such as BCB, acrylic resin, or imide resin.

The organic light emitting layer 114 is positioned on the first electrode 112 exposed by the bank 110. The organic light emitting layer 114 may include a light emitting layer, an electron injection layer, an electron transport layer, a hole transport layer, a hole injection layer, and the like. The organic light emitting layer may be configured as a single light emitting layer structure that emits one light, or may be composed of a plurality of light emitting layers to emit white light.

The second electrode 116 is positioned on the organic light emitting layer 114. When the display panel 100 is a top emission method, the second electrode 116 is made of a transparent conductive material such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO). By being formed, light generated in the organic light emitting layer 114 is emitted to the second electrode 116.

The protective layer 118 and the encapsulation layer 120 are positioned on the second electrode 116. The protective layer 118 may function to protect the encapsulation layer 120 so that the side surfaces of the encapsulation layer 120 are not peeled off or affect uniformity during the manufacturing process of the encapsulation layer 120. As will be described later, the protective layer 118 that is not affected by the oxygen (O 2) gas used during the manufacturing process of the sealing layer 120 is disposed to improve the reliability of the sealing layer 120 and the sealing layer 120 is It can prevent the peeling phenomenon.

In terms of materials, the protective layer 118 may include inorganic materials. The inorganic material included in the protective layer 118 may be an inorganic material that does not contain oxygen. At this time, the protective layer 118 may be formed of an inorganic material that does not contain oxygen by using plasma vapor deposition.

The encapsulation layer 120 prevents oxygen and moisture penetration from outside in order to prevent oxidation of the light emitting material and the electrode material. When the organic light emitting device is exposed to moisture or oxygen, a pixel shrinkage phenomenon in which the light emitting region is reduced may occur, or a dark spot in the light emitting region may occur. The encapsulation layer may be composed of an inorganic film made of a glass, metal, aluminum oxide (AlOx) or silicon (Si)-based material, or may have a structure in which an organic film and an inorganic film are alternately stacked. The inorganic film serves to block the penetration of moisture or oxygen, and the organic film serves to flatten the surface of the inorganic film. The reason for forming the encapsulation layer as a multi-layered thin film layer is to make the movement path of moisture or oxygen longer and more complicated than a single layer, making it difficult to penetrate moisture/oxygen to the organic light emitting device.

In order to increase the strength and/or rigidity of the display panel 100, one or more support layers 180 may be provided below the base layer 101. The support layer 180 is attached to the opposite side (second side) of the side (first side) where the organic light emitting element is located on both sides of the base layer 101. The support layer 180 is polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyethylene ether phthalate (polyethylene ether phthalate), polycarbonate (polycarbonate), polyarylate (polyarylate), poly It may be made of a thin film composed of a combination of polyether imide, polyether sulfonate, polyimide, polyacrylate or other suitable polymer. Other suitable materials that can be used to form the support layer 180 may be thin glass, a metal foil shielded with a dielectric, a multi-layer polymer, a polymer film containing a polymer material combined with nanoparticles or microparticles, and the like. have.

4 is a cross-sectional view illustrating in more detail the anti-reflective polarizing plate 200 included in the organic light emitting display of FIG. 2.

The anti-reflective polarizing plate 200 may include a linear polarizing plate 210 that passes only linearly polarized light in a predetermined direction and an anti-reflective structure 220 underneath. The linear polarizing plate 210 includes a polarizer 211 and a first protective film 212 and a second protective film 213 attached to both sides of the polarizer 211. An adhesive layer 230 may be provided between the linear polarizing plate 210 and the anti-reflective structure 220. When forming each layer constituting the linear polarizing plate 210 on the anti-reflection structure 220 in a film-forming structure, the adhesive layer 230 may be omitted.

The polarizer 211 is formed by stretching poly-vinyl alcohol (PVA) in which iodine or a dichroic dye is dyed, and an absorption axis is formed in the stretching direction. By the polarizer 211, light oscillating in a direction parallel to the absorption axis is absorbed, and light oscillating in a direction perpendicular to the absorption axis is selectively transmitted.

However, since the polyvinyl alcohol, which is a material of the polarizer 211, has strong hydrophilicity and weak moisture resistance, the intermolecular bond of the polarizer 211 is weakened by moisture, and thus shrinkage occurs in the stretched direction. Therefore, in order to prevent this, by using the first and second protective films 212 and 213 made of a material such as triacetyl cellulose (TAC) on both sides of the polarizer 211, the polarizer 211 Try to suppress the contraction.

However, there is a limitation in preventing shrinkage of the polarizer 211 under a high temperature environment or a high temperature and high humidity environment. Accordingly, one or both of the first and second protective films 212 and 213 or both of the first and second protective films apply acrylic having a lower coefficient of moisture expansion and thermal expansion than that of tri-acetyl cellulose (TAC). can do. The first and/or second protective film made of acrylic prevents moisture from penetrating into the polarizer 211, which is susceptible to moisture, and thus can suppress the shrinkage of the polarizer 211 even under a high temperature environment or a high temperature and high humidity environment.

The anti-reflection structure 220 may include a phase difference plate. The retardation plate may be a quarter-wave film (QWP) or a half-wave film (HWP). The retardation plate may be formed by stretching a cyclo-olefin polymer or cyclic olefin polymer (COP) film.

The principle that the anti-reflection polarizing plate suppresses reflection of external light is as follows. The polarizer 211 has a function of polarizing light in one axis. For example, the external light passes through the polarizer 211 and is linearly polarized in the uniaxial direction. The quarter wavelength film (QWP) converts linearly polarized external light into circularly polarized light. For example, external light passes through a quarter-wave film (QWP) and is converted to left-circular polarization. The left-circularly polarized external light may be reflected from the metal wiring and electrode of the display panel 100. The left-circularly polarized external light is reflected from the display panel 100 and is right-circularly polarized. The right-circularly polarized external light passes through the quarter-wave film (QWP) again, and is linearly polarized in the other axis direction, which is perpendicular to the uniaxial direction. Here, the other axis direction is the light absorption axis of the polarizer 211. Therefore, the external light reflected from the display panel 100 is absorbed by the light absorption axis of the polarizer 211 and does not come out of the organic light emitting display device.

Meanwhile, an adhesive layer 230 may be further included at the bottom of the anti-reflection polarizing plate. The adhesive layer 230 is for bonding and adhering with other components. In general, the adhesive layer 230 is protected by a release film (not shown) prior to bonding and attachment.

5A is a diagram illustrating an organic light emitting display panel according to an exemplary embodiment of the present specification.

Referring to FIG. 5A, the display panel 100 may include a display area displaying an image and a non-display area around the display area. The anti-reflective polarizing plate 200 attached to the upper portion of the display panel may include a linear polarizing plate 210 that transmits only linearly polarized light in a predetermined direction and an anti-reflective structure 220 below the linearly polarizing plate 210. The anti-reflection structure 220 corresponding to the non-display area may include a resin-filled groove. That is, when manufacturing an organic light emitting display device having various shapes, after attaching a rectangular anti-reflective polarizing plate 200 to the display panel 100 on a display panel having various shapes, cutting it according to the shape of the display panel 100 can do. When the anti-reflective polarizing plate 200 is cut to match the shape of the display panel 100, cracks may occur. In this case, the crack-preventing structure 250 for preventing the occurrence of cracks may include the anti-reflective polarizing plate 220. It may correspond to a non-display area of the display panel 100 and may be located inside the cutting line TL.

5B is a cross-sectional view showing a cross-section of the X portion in FIG. 5A. Referring to FIG. 5B, an anti-reflective polarizing plate 200 may be positioned on an upper portion of the display panel 100 including a display area AA displaying an image and a non-display area around the display area AA. . The anti-reflection polarizing plate 200 may include a linear polarizing plate 210 that transmits only linearly polarized light in a certain direction and an anti-reflective structure 220 for suppressing reflection of external light below the polarizing plate. The linear polarizing plate 210 includes a polarizer 211 and a first protective film 212 and a second protective film 213 attached to both sides of the polarizer 211. The polarizer 211 is formed by stretching poly-vinyl alcohol (PVA) in which iodine or a dichroic dye is dyed, and an absorption axis is formed in the stretching direction. By the polarizer 211, light oscillating in a direction parallel to the absorption axis is absorbed, and light oscillating in a direction perpendicular to the absorption axis is selectively transmitted. The first protective film 212 and the second protective film are made of either tri-acetyl cellulose (TAC) or acrylic on both sides of the polarizer 211 to prevent shrinkage of the polarizer 211 that is weak to moisture. Can. The anti-reflection structure 220 may include at least one retardation plate. The retardation plate may be a quarter-wave film (QWP) or a half-wave film (HWP). For example, when the retardation plate is a quarter-wave film (QWP), external light linearly polarized through the polarizer 211 is converted to circularly polarized light through the quarter-wave film (QWP). For example, external light passes through a quarter-wave film (QWP) and is converted to left-circular polarization. The left-circularly polarized external light may be reflected from the metal wiring and electrode of the display panel 100. The left-circularly polarized external light is reflected from the display panel 100 and is right-circularly polarized. The right-circularly polarized external light passes through the quarter-wave film (QWP) again, and is linearly polarized in the other axis direction, which is perpendicular to the uniaxial direction. Here, the other axis direction is the light absorption axis of the polarizer 211. Therefore, the external light reflected from the display panel 100 is absorbed by the light absorption axis of the polarizer 211 and does not come out of the organic light emitting display device.

The retardation plate may be formed by stretching a cyclo-olefin polymer or cyclic olefin polymer (COP) film.

The anti-reflection polarizing plate may be cut to fit the shape of the display panel using, for example, a UV wavelength laser. As described above, the phase difference plate made of the COP film may be damaged when the exposed sidewall is impacted when cutting with a laser. However, the crack prevention structure 250 formed inside the cutting line can suppress the phenomenon that the crack generated adjacent to the cutting line propagates inward. The crack prevention structure 250 may be, for example, a groove filled with a resin filler. The resin filler may be made of at least one selected from the group consisting of polyester-based, acrylic-based, polyurethane-based, melamine-based, polyvinyl alcohol-based and oxazoline-based binder resins.

Although the embodiments of the present specification have been described in detail with reference to the accompanying drawings, the present specification is not necessarily limited to these embodiments, and may be variously modified without departing from the technical spirit. Therefore, the embodiments disclosed in the present specification are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Each of the features of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and may be technically interlocked and driven by a person skilled in the art, and each of the embodiments may be implemented independently of each other or together in an associative relationship. It may be practiced. The scope of protection of the present invention should be interpreted by the following claims, and all technical spirits within the equivalent range should be interpreted as being included in the scope of the present invention.

100: display panel
200: anti-reflection polarizer
210: linear polarizer
211: polarizer
212: first protective film
213: 2nd protective film
220: anti-reflection structure
230: adhesive layer
250: crack prevention structure
300: cover member

Claims (17)

A linearly polarizing plate that transmits only linearly polarized light in a certain direction;
An anti-reflection layer located under the linear polarizer; And
An anti-reflection polarizer comprising a crack prevention structure provided on the side of the anti-reflection layer. According to claim 1,
The anti-reflection layer is an anti-reflection polarizing plate comprising at least one retardation plate. According to claim 2,
The crack prevention structure, when cutting the anti-reflection polarizing plate, the side wall of the exposed retardation plate is an anti-reflection polarizing plate to prevent damage caused by laser irradiation. According to claim 3,
The crack prevention structure is an anti-reflective polarizing plate that is a groove filled with resin. According to claim 2,
The retardation plate is an anti-reflection polarizing plate that is a quarter-wave film or a half-wave film. The method of claim 5,
The retardation plate is an anti-reflective polarizing plate formed by stretching a cyclo-olefin polymer or cyclic olefin polymer (COP) film. According to claim 4,
The resin is an anti-reflective polarizing plate made of at least one selected from the group consisting of polyester, acrylic, polyurethane, melamine, polyvinyl alcohol and oxazoline binder resins. According to claim 1,
The linear polarizing plate is a polarizer, and on both sides of the polarizer, an anti-reflection polarizing plate comprising a first protective film and a second protective film. The method of claim 8,
The first protective film and the second protective film is an anti-reflective polarizing plate selected from the group consisting of TAC film and acrylic film. According to claim 1,
An anti-reflective polarizing plate in which an adhesive is interposed between the linearly polarizing plate and the anti-reflecting unit. A display panel including a display area for displaying an image and a non-display area around the display area; And
It includes an anti-reflection polarizer positioned on the display panel,
The anti-reflection polarizing plate includes a linear polarizing plate that transmits only linearly polarized light in a certain direction and an anti-reflective structure under the linear polarizing plate,
The anti-reflection structure is an organic light emitting display device including a groove provided in an area corresponding to the non-display area. The method of claim 11,
The anti-reflection structure is an organic light emitting display device comprising at least one retardation plate. The method of claim 12,
The retardation plate is an organic light emitting display device that is a quarter wavelength film or a half wavelength film. The method of claim 13,
The retardation plate is an organic light emitting display device formed by stretching a cyclic olefin polymer (cyclo-olefin polymer or cyclic olefin polymer: COP) film. The method of claim 11,
The groove is an organic light emitting display device filled with a resin. The method of claim 11,
The linear polarizer is an organic light emitting display device comprising a polarizer and a TAC film or an acrylic film on both sides of the polarizing layer. The method of claim 11,
An organic light emitting display device in which an adhesive is interposed between the linearly polarizing plate and the anti-reflection structure.

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