Polarizing member and display device including the same

Abstract

Provided are a polarizing member and a display device including the same, the polarizing member according to one embodiment including a polarizer including an absorption axis and a transmission axis intersecting each other, a first phase difference layer disposed at a lower portion of the polarizer, a second phase difference layer disposed at a lower portion of the polarizer, and a third phase difference layer disposed at a lower portion of the polarizer. A second retardation layer is disposed under the first retardation layer, a third retardation layer is disposed over the polarizer, an in-plane retardation value of the third retardation layer is 37.5 nm to 237.5 nm, and an angle between a retardation axis of the third retardation layer and the transmission axis of the polarizer is 15 DEG to 75 DEG.

Description

Technical Field

[0001] The present invention relates to a polarization member and a display device including the polarization member. Background Art

[0002] With the development of information society, the demand for display devices for displaying images has increased in various forms. The display device may include a flat display panel such as a liquid crystal display panel, an organic light emitting display panel, and an inorganic light emitting display panel.

[0003] In order to prevent the reduction of recognition due to external light, the display device may include an optical film such as a polarization member disposed on the display panel. The optical film may prevent external light incident to the display device from being reflected on the display panel. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a polarization component and a display device including the polarization component, which can reduce the reflection of external light, improve the recognition of polarized sunglasses and improve the reliability.

[0005] The technical problems of the present invention are not limited to the above-mentioned technical problems, and those skilled in the art can clearly understand other technical problems not mentioned from the following description.

[0006] According to an embodiment for solving the technical problem, a polarization component may include a polarizer, a first phase difference layer, a second phase difference layer and a third phase difference layer, the polarizer including an absorption axis and a transmission axis crossing each other, the first phase difference layer being arranged at the lower portion of the polarizer, the second phase difference layer being arranged at the lower portion of the first phase difference layer; the third phase difference layer being arranged at the upper portion of the polarizer, the in-plane phase difference value of the third phase difference layer being 37.5 nm to 237.5 nm, and the angle between the delay axis of the third phase difference layer and the transmission axis of the polarizer being 15° to 75°.

[0007] The third phase difference layer may include rod type nematic liquid crystal.

[0008] The third phase difference layer may include a λ / 4 phase difference layer.

[0009] The first phase difference layer may include a λ / 2 phase difference layer, and the second phase difference layer may include a λ / 4 phase difference layer.

[0010] The first phase difference layer may include a λ / 2 phase difference layer, and the second phase difference layer may include a positive C plate.

[0011] The polarization member may further include a first protective film disposed between the polarizer and the first phase difference layer, and the first protective film may include an acrylic resin film, a polyester resin film, a cellulose resin film, or a polyolefin resin film.

[0012] The polarization member may further include a second protective film disposed between the polarizer and the third phase difference layer.

[0013] The polarization member may further include a third protective film disposed on the third phase difference layer.

[0014] The polarization member may further include a hard coating layer disposed on the third protective film, and the hard coating layer may include (meth)acrylate.

[0015] The polarization member may further include a second protective film disposed between the polarizer and the third phase difference layer, and the second protective film may include an acrylic resin film, a polyester resin film, a cellulose resin film, or a polyolefin resin film.

[0016] The polarization member may further include a hard coating layer disposed on the third phase difference layer, and the hard coating layer may include (meth)acrylate.

[0017] The polarization member may further include a first protective film disposed between the polarizer and the first phase difference layer, and the first protective film may include an acrylic resin film, a polyester resin film, a cellulose resin film, or a polyolefin resin film.

[0018] The polarization member may further include a second protective film disposed between the polarizer and the third phase difference layer.

[0019] Furthermore, a display device according to an embodiment may include a display panel and a polarization component arranged on the display panel, the polarization component may include a polarizer, a first phase difference layer, a second phase difference layer and a third phase difference layer, the polarizer includes an absorption axis and a transmission axis that cross each other, the first phase difference layer is arranged at the bottom of the polarizer, the second phase difference layer is arranged at the bottom of the first phase difference layer, the third phase difference layer is arranged at the top of the polarizer, the in-plane phase difference value of the third phase difference layer may be 37.5nm to 237.5nm, and the angle between the delay axis of the third phase difference layer and the transmission axis of the polarizer may be 15° to 75°.

[0020] The display panel may include a pixel electrode disposed on a substrate, a light emitting layer disposed on the pixel electrode, and a common electrode disposed on the light emitting layer.

[0021] The display panel may further include an encapsulation layer disposed on the common electrode, and a touch sensing part disposed on the encapsulation layer.

[0022] The display device may further include a cover window disposed on the polarization member.

[0023] The third phase difference layer may include rod-shaped nematic liquid crystal.

[0024] The third phase difference layer may include a λ / 4 phase difference layer.

[0025] The first phase difference layer may include a λ / 2 phase difference layer, and the second phase difference layer may include a λ / 4 phase difference layer.

[0026] Details of other embodiments are included in the detailed description and accompanying drawings.

[0027] In the polarization member and the display device including the polarization member according to an embodiment, light linearly polarized in the polarizer is converted into elliptically polarized light in the third phase difference layer, thereby enabling a user wearing polarized sunglasses to recognize an image of the display panel.

[0028] The effects according to the embodiments are not limited to the above-exemplified contents, and more various effects are included in this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is an exploded perspective view showing a display device according to an embodiment.

[0030] Figure 2 is a side view showing a display device according to an embodiment.

[0031] Figure 3 is a layout diagram showing a display area of ​​a display panel according to an embodiment.

[0032] Figure 4 is shown along Figure 3 A cross-sectional view of an example of a display panel taken along line BB'.

[0033] Figure 5 It is shown Figure 4 An exploded perspective view of an example of a polarization member.

[0034] Figure 6 It is a diagram showing the slow axis of the third phase difference layer and the transmission axis and absorption axis of the polarizer.

[0035] Figure 7 It is a cross-sectional view showing an example of a polarization member and polarization of light.

[0036] Figure 8is an exploded perspective view showing a polarization member according to another embodiment.

[0037] Fig. 9 is an exploded perspective view showing a polarization member according to still another embodiment.

[0038] Fig.10 is an exploded perspective view showing a polarization member according to still another embodiment.

[0039] Fig.11 is an exploded perspective view showing a polarization member according to still another embodiment.

[0040] Fig.12 is an exploded perspective view showing a polarization member according to still another embodiment.

[0041] Fig.13 is an exploded perspective view showing a polarization member according to still another embodiment.

[0042] Fig.14 is an exploded perspective view showing a polarization member according to still another embodiment.

[0043] Fig.15 is an exploded perspective view showing a polarization member according to still another embodiment.

[0044] Fig.16 It is a graph showing reliability evaluation conditions indicating temperature changes corresponding to time.

[0045] Fig.17 This is a graph showing the reliability evaluation results of the polarization component.

[0046] Fig.18 This is a diagram showing a portion where cracks in the third phase difference layer of the polarizing member are observed.

[0047] Fig.19 1 is an optical image of a camera hole portion after 150 cycles of reliability evaluation were performed in the polarization member manufactured according to Example 1.

[0048] Fig. 20 1 is an optical image of a camera hole portion after 150 cycles of reliability evaluation were performed in the polarization member manufactured according to Example 2.

[0049] Fig.21 1 is an optical image of a camera hole portion after 150 cycles of reliability evaluation were performed in the polarization member manufactured according to the comparative example.

[0050] Fig. 22 1 is an optical image of a camera hole portion after 500 cycles of reliability evaluation were performed in the polarization member manufactured according to Example 1.

[0051] Fig.231 is an optical image of a camera hole portion after 500 cycles of reliability evaluation were performed in the polarization member manufactured according to Example 2.

[0052] Fig.24 This is an optical image of the camera hole portion of the polarization member manufactured according to the comparative example after 500 cycles of reliability evaluation.

[0053] Fig.25 4 is a SEM image of the camera hole portion of the polarization member manufactured according to Example 1 after 500 cycles of reliability evaluation.

[0054] Fig.26 This is a SEM image of the camera hole portion of the polarization member manufactured according to the comparative example after 500 cycles of reliability evaluation.

[0055] Fig. 27 Yes Fig.26 The image is enlarged.

[0056] Description of Reference Numerals

[0057] 10: display device; 1100: polarizer; 1200: first phase difference layer; 1300: second phase difference layer; 1400: third phase difference layer; 1500: first protective film; 1600: second protective film; 1700: third protective film; 1800: hard coating layer; POL: polarizing member DETAILED DESCRIPTION

[0058] By means of the attached Figure 1 The advantages, features and methods of implementing the present invention can be clearly understood by referring to the embodiments described in detail below. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms different from each other. However, the embodiments are intended to fully disclose the present invention and fully inform the ordinary technicians in the technical field to which the present invention belongs. The scope of the present invention is provided, and the present invention is only defined by the scope of the attached claims.

[0059] When an element or layer is referred to as being "on" another element or layer, it includes the case where it is directly on another element or where other layers or other elements are disposed between them. Similarly, when referred to as "below," "left," and "right," it includes the case where it is disposed directly adjacent to another element or where other layers or other elements are disposed between them. Throughout the specification, the same reference numerals denote the same constituent elements.

[0060] Although the terms first, second, etc. are used to describe various constituent elements, these constituent elements are not limited by these terms. These terms are used only to distinguish one constituent element from other constituent elements. Therefore, the first constituent element mentioned below can also be the second constituent element within the technical concept of the present invention.

[0061] Hereinafter, embodiments will be described with reference to the accompanying drawings.

[0062] Figure 1 is an exploded perspective view showing a display device according to an embodiment. Figure 2 is a side view showing a display device according to an embodiment.

[0063] Reference Figure 1 and Figure 2 According to one embodiment, the display device 10 is a device for displaying videos or still images, which is not only used as a display screen of portable electronic devices such as mobile phones, smart phones, tablet personal computers, smart watches, watch phones, mobile communication terminals, electronic manuals, electronic books, portable multimedia players (PMP), navigation, ultra mobile PCs (UMPC), etc., but can also be used as a display screen of various products such as televisions, notebook computers, monitors, billboards, and the Internet of Things (IOT).

[0064] The display device 10 according to an embodiment may be a light-emitting display device such as an organic light-emitting display device using an organic light-emitting diode, a quantum dot light-emitting display device including a quantum dot light-emitting layer, an inorganic light-emitting display device including an inorganic semiconductor, and an ultra-small light-emitting display device using an ultra-small light-emitting diode (micro or nano light emitting diode, micro LED or nano LED). The following description will focus on the case where the display device 10 according to an embodiment is an organic light-emitting display device, but the embodiments of the present specification are not limited thereto.

[0065] The display device 10 includes a display panel 100 , a display driving circuit 200 , and a circuit board 300 .

[0066] The display panel 100 may be formed as a plane having a rectangular shape with a short side in a first direction DR1 and a long side in a second direction DR2 intersecting the first direction DR1. Also, the display panel 100 may have a thickness in a third direction DR3 intersecting the first direction DR1 and the second direction DR2. The corners where the short side in the first direction DR1 and the long side in the second direction DR2 intersect may be formed to be rounded to have a predetermined curvature, or may be formed to be a right angle. The plane shape of the display panel 100 is not limited to a quadrilateral, but may be formed to be other polygons, a circle or an ellipse. The display panel 100 may be formed to be flat, but is not limited thereto. For example, the display panel 100 may include a curved portion formed at the ends of the left and right sides and having a constant curvature or a variable curvature. In addition, the display panel 100 may be formed to be flexible so that it may be bent, twisted, curved, folded or curled.

[0067] The substrate SUB of the display panel 100 may include a main area MA and a sub area SBA.

[0068] The main area MA may include a display area DA that displays an image and a non-display area NDA that is a peripheral area of ​​the display area DA. The display area DA may occupy most of the area of ​​the main area MA. The display area DA may be arranged in the center of the main area MA. The non-display area NDA may be arranged adjacent to the display area DA. The non-display area NDA may be an outer area of ​​the display area DA. The non-display area NDA may be arranged to surround the display area DA. The non-display area NDA may be an edge area of ​​the display panel 100.

[0069] The sub-region SBA may extend in the second direction DR2 from one side of the main region MA. The length of the sub-region SBA in the second direction DR2 may be less than the length of the main region MA in the second direction DR2. The length of the sub-region SBA in the first direction DR1 may be less than the length of the main region MA in the first direction DR1, or may be substantially the same as the length of the main region MA in the first direction DR1. The sub-region SBA may be bent and may be arranged at the lower portion of the display panel 100. In this case, the sub-region SBA may overlap the main region MA in the third direction DR3.

[0070] The display driving circuit 200 may generate signals and voltages for driving the display panel 100. The display driving circuit 200 may be formed as an integrated circuit (IC) and attached to the sub-area SBA of the display panel 100 in a chip on glass (COG) manner, a chip on plastic (COP) manner, or an ultrasonic bonding manner. Alternatively, the display driving circuit 200 may be attached to the circuit board 300 in a chip on film (COF) manner.

[0071] The circuit board 300 may be attached at one end of the sub-area SBA of the display panel 100. Thus, the circuit board 300 may be electrically connected to the display panel 100 and the display driving circuit 200. The display panel 100 and the display driving circuit 200 may receive digital video data, timing signals, and driving voltages through the circuit board 300. The circuit board 300 may be a flexible film such as a flexible printed circuit board, a printed circuit board, or a chip on film.

[0072] The touch driving circuit 400 may be disposed on the circuit board 300. The touch driving circuit 400 may be formed as an integrated circuit (IC) and attached on the circuit board 300.

[0073] The touch drive circuit 400 can be electrically connected to multiple drive electrodes and multiple sensing electrodes of the touch sensing unit TDU. The touch drive circuit 400 applies a touch drive signal to the multiple drive electrodes, and senses the touch sensing signal of each of the multiple touch nodes, such as the charge change of the mutual capacitance, through the multiple sensing electrodes. The touch drive circuit 400 can determine whether the user touches or approaches the touch node based on the touch sensing signal of each of the multiple touch nodes. The user's touch refers to the direct contact between an object such as a user's finger or pen and the front surface of the display device 10 arranged on the touch sensing unit TDU. The user's approach refers to the positioning of an object such as a user's finger or pen on the front surface of the display device 10, such as hovering.

[0074] like Figure 2 As shown, the display panel 100 may include a substrate SUB, a thin film transistor layer TFTL, a light emitting element layer EML, an encapsulation layer TFEL, and a touch sensing part TDU.

[0075] The substrate SUB may be made of an insulating material such as a polymer resin. For example, the substrate SUB may be made of polyimide. The substrate SUB may be a flexible substrate that can be bent, folded, rolled, etc.

[0076] A thin film transistor layer TFTL may be disposed on the substrate SUB. The thin film transistor layer TFTL may be disposed in the main area MA and the sub-area SBA. The thin film transistor layer TFTL includes a thin film transistor.

[0077] The light emitting element layer EML may be disposed on the thin film transistor layer TFTL. The light emitting element layer EML may be disposed in the display area DA of the main area MA. The light emitting element layer EML includes a light emitting element disposed in the light emitting part.

[0078] The encapsulation layer TFEL may be disposed on the light emitting element layer EML. The encapsulation layer TFEL may be disposed in the display area DA and the non-display area NDA of the main area MA. The encapsulation layer TFEL includes at least one inorganic film and at least one organic film for encapsulating the light emitting element layer.

[0079] The touch sensing part TDU may be disposed on the encapsulation layer TFEL. The touch sensing part TDU may be disposed in the display area DA and the non-display area NDA of the main area MA. The touch sensing part TDU may sense a touch of a person or an object using a touch electrode.

[0080] The polarization member POL may be disposed on the touch sensing portion TDU of the display panel 100. The polarization member POL may be a structure for preventing the recognition of an image displayed by the display panel 100 from being reduced due to reflection of external light from the display panel 100. The polarization member POL may be attached to the display panel 100 by a transparent adhesive member such as a pressure sensitive adhesive (PSA), an optically clear adhesive (OCA), or an optically clear resin (OCR).

[0081] A cover window CW may be arranged on the polarization member POL to protect the upper portion of the display panel 100. The cover window CW may be attached to the polarization member POL by a transparent adhesive member such as OCA or OCR. The cover window CW may also be an inorganic substance such as glass, and may also be an organic substance such as plastic or a polymer material. In another exemplary embodiment, the cover window CW may be omitted. In this case, the polarization member POL may include a hard coating layer or a surface treatment layer arranged on the uppermost layer.

[0082] Figure 3 is a layout diagram showing a display area of ​​a display panel according to an embodiment. Figure 3 4 and 5. The light emitting parts EA1, EA2, EA3, EA4 of the light emitting element layer EML and the touch electrodes TE, RE of the touch sensing part TDU are shown in FIG. Figure 3 2 shows an example of a touch node which is an intersection of the driving electrode TE and the sensing electrode RE among the touch electrodes TE and RE.

[0083] The display area DA of the display panel 100 may include a plurality of pixels PX. Each of the plurality of pixels PX may include a first light emitting portion EA1 of a first sub-pixel emitting light of a first color, a second light emitting portion EA2 of a second sub-pixel emitting light of a second color, a third light emitting portion EA3 of a third sub-pixel emitting light of a third color, and a fourth light emitting portion EA4 of a fourth sub-pixel emitting light of the second color. For example, the light of the first color may be red wavelength light, the light of the second color may be green wavelength light, and the light of the third color may be blue wavelength light. Red wavelength light may be defined as light of a wavelength of about 650 nm, green wavelength light may be defined as light of a wavelength of about 550 nm, and blue wavelength light may be defined as light of a wavelength of about 450 nm, but the embodiments of the present specification are not limited thereto.

[0084] The first light emitting part EA1 and the second light emitting part EA2 of each pixel PX may be adjacent to each other in the fourth direction DR4, and the third light emitting part EA3 and the fourth light emitting part EA4 may be adjacent to each other in the fourth direction DR4. The first light emitting part EA1 and the fourth light emitting part EA4 of each pixel PX may be adjacent to each other in the fifth direction DR5, and the second light emitting part EA2 and the third light emitting part EA3 may be adjacent to each other in the fifth direction DR5.

[0085] Each of the first light emitting unit EA1, the second light emitting unit EA2, the third light emitting unit EA3 and the fourth light emitting unit EA4 may have a rhombus-shaped plane shape or a rectangular plane shape, but is not limited thereto. Each of the first light emitting unit EA1, the second light emitting unit EA2, the third light emitting unit EA3 and the fourth light emitting unit EA4 may have a polygonal, circular or elliptical plane shape other than a quadrilateral. And, Figure 3 The example shows a case where the area of ​​the third light emitting portion EA3 is the largest and the areas of the second light emitting portion EA2 and the fourth light emitting portion EA4 are the smallest, but the present invention is not limited to this.

[0086] The second light emitting portion EA2 and the fourth light emitting portion EA4 may be arranged in odd rows. The second light emitting portion EA2 and the fourth light emitting portion EA4 may be arranged side by side in the first direction DR1 in each of the odd rows. The second light emitting portion EA2 and the fourth light emitting portion EA4 may be arranged alternately in each of the odd rows. Each of the second light emitting portions EA2 may have a long side in the fourth direction DR4 and a short side in the fifth direction DR5, and each of the fourth light emitting portions EA4 may have a short side in the fourth direction DR4 and a long side in the fifth direction DR5. The fourth direction DR4 is a direction between the first direction DR1 and the second direction DR2, and may be a direction inclined 45 degrees compared to the first direction DR1. The fifth direction DR5 may be a direction orthogonal to the fourth direction DR4.

[0087] The first light emitting portion EA1 and the third light emitting portion EA3 may be arranged in even rows. The first light emitting portion EA1 and the third light emitting portion EA3 may be arranged side by side in the first direction DR1 in each of the even rows. The first light emitting portion EA1 and the third light emitting portion EA3 may be arranged alternately in each of the even rows.

[0088] The second light emitting portion EA2 and the fourth light emitting portion EA4 may be arranged in odd columns. The second light emitting portion EA2 and the fourth light emitting portion EA4 may be arranged side by side in the second direction DR2 in each of the odd columns. The second light emitting portion EA2 and the fourth light emitting portion EA4 may be arranged alternately in each of the odd columns.

[0089] The first light emitting portion EA1 and the third light emitting portion EA3 may be arranged in even columns. The first light emitting portion EA1 and the third light emitting portion EA3 may be arranged side by side in the second direction DR2 in each of the even columns. The first light emitting portion EA1 and the third light emitting portion EA3 may be arranged alternately in each of the even columns.

[0090] The touch sensing unit TDU may include touch electrodes TE and RE including a driving electrode TE and a sensing electrode RE. Since the driving electrode TE and the sensing electrode RE are arranged in the same layer, they may be arranged to be spaced apart from each other. That is, a gap may be formed between the driving electrode TE and the sensing electrode RE adjacent to each other.

[0091] The connection electrode BE1 may be arranged in a layer different from the drive electrode TE and the sensing electrode RE. The connection electrode BE1 may be formed to be bent at least once. The connection electrode BE1 may overlap the drive electrode TE adjacent in the second direction DR2 in the third direction DR3 which is the thickness direction of the substrate SUB. The connection electrode BE1 may overlap the sensing electrode RE in the third direction DR3. One side of the connection electrode BE1 may be connected to one of the drive electrodes TE adjacent in the second direction DR2 through the touch contact hole TCNT1. The other side of the connection electrode BE1 may be connected to another of the drive electrodes TE adjacent in the second direction DR2 through the touch contact hole TCNT1.

[0092] Under the action of the connection electrode BE1, the driving electrode TE and the sensing electrode RE may be electrically separated at their intersections, thereby forming a mutual capacitance between the driving electrode TE and the sensing electrode RE.

[0093] Each of the driving electrode TE, the sensing electrode RE, and the connecting electrode BE1 may have a planar form of a mesh structure or a reticular structure. Thus, each of the driving electrode TE, the sensing electrode RE, and the connecting electrode BE1 may not overlap with the light emitting portion EA1, EA2, EA3, EA4 of each pixel PX. Therefore, it is possible to prevent the brightness of the light from being reduced due to the light emitted from the light emitting portion EA1, EA2, EA3, EA4 being blocked by the driving electrode TE, the sensing electrode RE, and the connecting electrode BE1.

[0094] Figure 4 is shown along Figure 3 A cross-sectional view of an example of a display panel taken along line BB'.

[0095] Reference Figure 4 The substrate SUB may be made of an insulating material such as a polymer resin. For example, the substrate SUB may be made of polyimide. The substrate SUB may be a flexible substrate that can be bent, folded, rolled, etc.

[0096] A display unit DU may be arranged on the substrate SUB. The display unit DU may include a thin film transistor layer TFTL, a light emitting element layer EML, and an encapsulation layer TFEL. Specifically, a barrier film BR may be arranged on the substrate SUB. The barrier film BR is a film for protecting the transistors of the thin film transistor layer TFTL and the light emitting layer 172 of the light emitting element layer EML from the influence of moisture penetrating through the substrate SUB that is not resistant to moisture permeation. The barrier film BR may be composed of a plurality of inorganic films stacked alternately. For example, the barrier film BR may be formed of a multi-film in which one or more inorganic films of a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer are alternately stacked.

[0097] A first thin film transistor TFT1 may be disposed on the barrier film BR. The first thin film transistor TFT1 may include a first active layer ACT1 and a first gate electrode G1.

[0098] A first active layer ACT1 of the first thin film transistor TFT1 may be disposed on the barrier film BR. The first active layer ACT1 of the first thin film transistor TFT1 may include polycrystalline silicon, single crystal silicon, low temperature polycrystalline silicon, amorphous silicon, or oxide semiconductor. The first active layer ACT1 may include a channel.

[0099] The first active layer ACT1 may include a first source region S1 and a first drain region D1 arranged across a channel. The channel may be a region overlapping with the first gate electrode G1 in a third direction DR3 which is a thickness direction of the substrate SUB. The first source region S1 may be arranged at one side of the first active layer ACT1, and the first drain region D1 may be arranged at the other side of the first active layer ACT1. The first source region S1 and the first drain region D1 may be regions that do not overlap with the first gate electrode G1 in the third direction DR3. The first source region S1 and the first drain region D1 may be regions that are doped with ions or impurities in a silicon semiconductor or an oxide semiconductor and have conductivity.

[0100] A first gate insulating film 130 may be disposed on the first active layer ACT1 of the first thin film transistor TFT1. The first gate insulating film 130 may be formed of an inorganic film, such as a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0101] A first gate electrode G1 of the first thin film transistor TFT1 and a first capacitor electrode CAE1 may be disposed on the first gate insulating film 130. The first gate electrode G1 may overlap the first active layer ACT1 in the third direction DR3. Figure 4, the first gate electrode G1 and the first capacitor electrode CAE1 are shown to be arranged apart from each other, but the first gate electrode G1 and the first capacitor electrode CAE1 may be connected to each other. The first gate electrode G1 and the first capacitor electrode CAE1 may be formed as a single layer or a multilayer composed of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0102] A first interlayer insulating film 141 may be disposed on the first gate electrode G1 of the first thin film transistor TFT1 and the first capacitor electrode CAE1. The first interlayer insulating film 141 may be formed of an inorganic film, such as a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. The first interlayer insulating film 141 may be formed of a plurality of inorganic films.

[0103] A second capacitor electrode CAE2 may be arranged on the first interlayer insulating film 141. The second capacitor electrode CAE2 may overlap with the first capacitor electrode CAE1 in the third direction DR3. When the first capacitor electrode CAE1 is connected to the first gate electrode G1, the second capacitor electrode CAE2 may overlap with the first gate electrode G1 in the third direction DR3. Since the first interlayer insulating film 141 has a predetermined dielectric constant, a capacitor may be formed by the first capacitor electrode CAE1, the second capacitor electrode CAE2, and the first interlayer insulating film 141 arranged therebetween. The second capacitor electrode CAE2 may be formed as a single layer or a multilayer composed of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0104] A second interlayer insulating film 142 may be disposed on the second capacitor electrode CAE2. The second interlayer insulating film 142 may be formed of an inorganic film, such as a silicon nitride layer, a silicon nitride oxide layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. The second interlayer insulating film 142 may be formed of a plurality of inorganic films.

[0105] A first anode connection electrode ANDE1 may be disposed on the second interlayer insulating film 142. The first anode connection electrode ANDE1 may be connected to the first drain region D1 of the first thin film transistor TFT1 through a first connection contact hole ANCT1 penetrating the first gate insulating film 130, the first interlayer insulating film 141, and the second interlayer insulating film 142. The first anode connection electrode ANDE1 may be formed as a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0106] A first planarization film 160 for planarizing a step caused by the first thin film transistor TFT1 may be disposed on the first anode connection electrode ANDE1. The first planarization film 160 may be formed of an organic film of acryl resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or the like.

[0107] A second anode connection electrode ANDE2 may be disposed on the first planarization film 160. The second anode connection electrode ANDE2 may be connected to the first anode connection electrode ANDE1 through a second connection contact hole ANCT2 penetrating the first planarization film 160. The second anode connection electrode ANDE2 may be formed as a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0108] A second planarization film 180 may be disposed on the second anode connection electrode ANDE2. The second planarization film 180 may be formed of an organic film of acryl resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or the like.

[0109] The light emitting element LEL and the dam 190 may be disposed on the second planarization film 180. Each of the light emitting elements LEL includes a pixel electrode 171, a light emitting layer 172, and a common electrode 173.

[0110] The pixel electrode 171 may be disposed on the second planarization film 180 . The pixel electrode 171 may be connected to the second anode connection electrode ANDE2 through a third connection contact hole ANCT3 penetrating the second planarization film 180 .

[0111] In a top emission structure that emits light toward the common electrode 173 based on the light-emitting layer 172, the pixel electrode 171 can be formed of a metal substance with high reflectivity, such as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and indium tin oxide (ITO / Al / ITO), an APC alloy, and a stacked structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd) and copper (Cu).

[0112] The dam 190 may be formed to divide the pixel electrode 171 on the second planarization film 180 to define the first light emitting portion EA1, the second light emitting portion EA2, the third light emitting portion EA3, and the fourth light emitting portion EA4. The dam 190 may be arranged to cover the edge of the pixel electrode 171. The dam 190 may be formed of an organic film of acryl resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or the like.

[0113] Each of the first light-emitting portion EA1, the second light-emitting portion EA2, the third light-emitting portion EA3 and the fourth light-emitting portion EA4 represents a region in which a pixel electrode 171, a light-emitting layer 172 and a common electrode 173 are sequentially stacked so that holes from the pixel electrode 171 and electrons from the common electrode 173 recombine in the light-emitting layer 172 to emit light.

[0114] A light emitting layer 172 may be disposed on the pixel electrode 171 and the dam 190. The light emitting layer 172 may contain an organic substance to emit a predetermined color. For example, the light emitting layer 172 includes a hole transporting layer, an organic substance layer, and an electron transporting layer.

[0115] The common electrode 173 may be disposed on the light emitting layer 172. The common electrode 173 may be disposed to cover the light emitting layer 172. The common electrode 173 may be a common layer commonly formed in the first light emitting portion EA1, the second light emitting portion EA2, the third light emitting portion EA3, and the fourth light emitting portion EA4. A capping layer may be formed on the common electrode 173.

[0116] In the upper light emitting structure, the common electrode 173 may be formed of a transparent metal material (TCO) such as ITO and IZO that can transmit light, or a semi-transmissive metal material (Semi-transmissive Conductive Material) such as magnesium (Mg), silver (Ag), or an alloy of magnesium (Mg) and silver (Ag). In the case where the common electrode 173 is formed of a semi-transmissive metal material, light extraction efficiency can be improved through a micro cavity.

[0117] A spacer 191 may be disposed on the dam 190. The spacer 191 may function as a support mask in the manufacturing process of the light emitting layer 172. The spacer 191 may be formed of an organic film of acryl resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or the like.

[0118] An encapsulation layer TFEL may be disposed on the common electrode 173. The encapsulation layer TFEL may include at least one inorganic film to prevent oxygen or moisture from penetrating into the light emitting layer 172 of the light emitting element layer EML. Also, the encapsulation layer TFEL may include at least one organic film to protect the light emitting element layer EML from foreign matter such as dust.

[0119] The encapsulation layer TFEL may include a first encapsulation inorganic film TFE1 , an encapsulation organic film TFE2 , and a second encapsulation inorganic film TFE3 .

[0120] The first encapsulation inorganic film TFE1 and the second encapsulation inorganic film TFE3 may include at least one inorganic insulator of aluminum oxide, titanium oxide, tantalum oxide, hafnium oxide, zinc oxide, silicon oxide, silicon nitride, and silicon oxynitride. The encapsulation organic film TFE2 may include a monomer. The encapsulation organic film TFE2 may be formed by hardening the monomer using heat or ultraviolet rays after coating the monomer.

[0121] A touch sensing part TDU may be disposed on the encapsulation layer TFEL and may include a first touch insulating film TINS1, a connection electrode BE1, a second touch insulating film TINS2, a driving electrode TE, a sensing electrode RE, and a third touch insulating film TINS3.

[0122] The first touch insulating film TINS1 may be formed of an inorganic film, for example, a silicon nitride layer, a silicon nitride oxide layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0123] A connection electrode BE1 may be disposed on the first touch insulating film TINS1 and may be formed as a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0124] A second touch insulating film TINS2 is arranged on the connection electrode BE1. The second touch insulating film TINS2 may be formed of an inorganic film, such as a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. Alternatively, the second touch insulating film TINS2 may be formed of an organic film of acryl resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or the like.

[0125] A driving electrode TE and a sensing electrode RE may be disposed on the second touch insulating film TINS2. The driving electrode TE and the sensing electrode RE may be formed as a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0126] The driving electrode TE and the sensing electrode RE may overlap with the connection electrode BE1 in the third direction DR3 . The driving electrode TE may be connected with the connection electrode BE1 through a touch contact hole TCNT1 penetrating the second touch insulating film TINS2 .

[0127] A third touch insulating film TINS3 is formed on the driving electrode TE and the sensing electrode RE. The third touch insulating film TINS3 can flatten the steps formed by the driving electrode TE, the sensing electrode RE, and the connecting electrode BE1. The third touch insulating film TINS3 can be formed of an organic film of acryl resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, etc.

[0128] Figure 5 It is shown Figure 4 An exploded perspective view of an example of a polarization member. Figure 6 It is a diagram showing the slow axis of the third phase difference layer and the transmission axis and absorption axis of the polarizer. Figure 7 It is a cross-sectional view showing an example of a polarization member and polarization of light.

[0129] Reference Figures 5 to 7, the polarization member POL may include a first portion PR1 and a second portion PR2. The first portion PR1 functions as an anti-reflection portion for preventing the image recognition of the display panel 100 from being reduced due to external light. The second portion PR2 may include a sunglass free retarder for improving the image recognition of the display panel 100 by a viewer wearing polarized sunglasses.

[0130] In order to make the first portion PR1 function as an anti-reflection portion, the in-plane phase difference value R of the first portion PR1 at a wavelength of 550 nm is o The thickness of the first portion PR1 may be 100 nm to 180 nm. o (450) / R o The value of (550) may be 1.00 or less. o (450) may be the in-plane phase difference value of the first portion PR1 at a wavelength of 450 nm, and R o (550) may be the in-plane phase difference value R of the first portion PR1 at a wavelength of 550 nm. o .

[0131] The first portion PR1 may include a polarizer 1100 , a first phase difference layer 1200 , and a second phase difference layer 1300 . The second portion PR2 may include a third phase difference layer 1400 .

[0132] The polarizer 1100 plays a role in polarizing incident light into light in the same direction as the transmission axis TAXIS. The transmission axis TAXIS and the absorption axis AAXIS of the polarizer 1100 may cross each other. The angle between the transmission axis TAXIS and the absorption axis AAXIS of the polarizer 1100 may be 90°.

[0133] The polarizer 1100 may be configured by including a polarizer or a dichroic dye in a polyvinyl alcohol (PVA) resin film.

[0134] The polyvinyl alcohol resin can be obtained by saponifying a polyvinyl acetate resin. Examples of the polyvinyl acetate resin include polyvinyl acetate as a single polymer of vinyl acetate, or copolymers of vinyl acetate and other monomers copolymerizable therewith. Examples of other monomers copolymerizable with the vinyl acetate include unsaturated carboxylic acids, unsaturated sulfonic acids, olefins, vinyl ethers, and amino-containing acrylamide monomers.

[0135] The polyvinyl alcohol resin may also be modified, for example, polyvinyl formal or polyvinyl acetal modified into aldehydes may also be used. The saponification degree of the polyvinyl alcohol resin may be 85 to 100 mol %, and preferably may be 98 mol % or more. The degree of polymerization of the polyvinyl alcohol resin may be about 1000 to 10000, and preferably may be 1500 to 5000.

[0136] Polyvinyl alcohol-based resin may be used as a disc film of the polarizer 1100. The disc film may have a thickness of about 10 to 150 μm.

[0137] The dichroic pigment may be an iodine molecule or a dye molecule.

[0138] Polarizer 1100 can be manufactured by the process of continuously uniaxially stretching polyvinyl alcohol film on aqueous solution, the process of dyeing and adsorbing with dichroic pigment, the process of treating with boric acid aqueous solution, and washing and drying processes. The polyvinyl alcohol resin film can be stretched in one direction and impregnated with a solution of dichroic dye. In this case, iodine molecules or dichroic dye molecules are arranged side by side in the stretching direction. Because iodine molecules and dye molecules show dichroism, light vibrating in the stretching direction can be absorbed, and light vibrating in the direction at right angles thereto is transmitted.

[0139] The first phase difference layer 1200 may be disposed at the lower portion of the polarizer 1100. For example, the first phase difference layer 1200 may be disposed on the lower surface of the polarizer 1100. As long as the anti-reflection performance of light incident from the outside can be exhibited, the first phase difference layer 1200 may be used without limitation. The first phase difference layer 1200 may include a single phase difference layer or include a plurality of phase difference layers.

[0140] When the first phase difference layer 1200 includes a single phase difference layer, the single phase difference layer may be a half wavelength (λ / 2) phase difference layer, which delays the component vibrating in the slow axis direction of the incident light by 1 / 2 and then emits the light.

[0141] The angle between the delay axis of the first phase difference layer 1200 and the absorption axis AAXIS of the polarizer 1100 may be about 45°±α. For example, α may be 0.5°, but the embodiments of the present specification are not limited thereto.

[0142] The second phase difference layer 1300 may be disposed at the lower portion of the polarizer 1100. For example, the second phase difference layer 1300 may be disposed on the lower surface of the first phase difference layer 1200. As long as the anti-reflection performance of the light incident from the outside can be exhibited, the second phase difference layer 1300 may be used without limitation. The second phase difference layer 1300 may include a single phase difference layer or include a plurality of phase difference layers.

[0143] When the second phase difference layer 1300 includes a single phase difference layer, the single phase difference layer may be a quarter wavelength (λ / 4) phase difference layer that delays the component vibrating in the slow axis direction of the incident light by 1 / 4 in phase and then emits the light.

[0144] An angle between the delay axis of the second phase difference layer 1300 and the absorption axis AAXIS of the polarizer 1100 may be approximately 10° to 75°, but the embodiments of the present specification are not limited thereto.

[0145] In other exemplary embodiments, the second phase difference layer 1300 may be a positive C phase difference layer. The positive C phase difference layer may improve the image quality by improving the reflective color sense in the oblique direction of the identification side. The positive C phase difference layer refers to a phase difference plate whose optical axis exists in the vertical direction of the surface (e.g., the third direction DR3), for example, may include an infinitely large film with a negative refractive index ratio (Nz), and may include a case where it is substantially less than -6. The refractive index ratio (Nz) may be calculated according to Mathematical Formula 1.

[0146] Mathematical formula 1

[0147]

[0148] In Mathematical Formula 1, nx and ny represent the film's on-surface refractive index. When the vibration direction in which the on-surface refractive index reaches a maximum is set to x, nx represents the refractive index based on light vibrating in the vibration direction, and ny is the refractive index in a direction perpendicular to nx. nz represents the refractive index in the thickness direction.

[0149] The positive C phase difference layer can be manufactured by orienting a polymer film in an appropriate manner, or by coating a polymerizable cholesteric liquid crystal compound on one side of a substrate, orienting it in a constant direction, and then hardening it. In the case of using a polymerizable cholesteric liquid crystal compound, a zero phase difference film can be used as a substrate. A zero phase difference film refers to a film that does not produce a substantial phase difference even if light is transmitted.

[0150] In addition, the third phase difference layer 1400 may be disposed on the polarizer 1100. For example, the third phase difference layer 1400 may be disposed on the upper surface of the polarizer 1100.

[0151] In this specification, the “viewer side” refers to a side close to a user or viewer when the polarization member POL is attached to one side of the display panel 100. The “panel side” is the opposite side of the recognition side, which refers to a side close to the display panel 100. Therefore, the upper surface of the polarizer 1100 and the third phase difference layer 1400 may be arranged at the recognition side of the polarization member POL, and the lower surface of the polarizer 1100 and the first phase difference layer 1200 and the second phase difference layer 1300 are arranged at the panel side of the polarization member POL.

[0152] The third phase difference layer 1400 may be a quarter wavelength (λ / 4) phase difference layer. The quarter wavelength phase difference layer delays the component vibrating in the direction of the slow axis in the incident light by 1 / 4 of the phase and then emits it. The third phase difference layer 1400 converts the linear polarization passing through the polarizer 1100 into circular polarization or elliptical polarization, so that the viewer can view the image of the display panel 100 regardless of the polarization direction of the sunglasses he wears.

[0153] The angle θ between the delay axis SAXIS of the third phase difference layer 1400 and the transmission axis TAXIS of the polarizer 1100 may be approximately 15° to 75°. The angle θ between the delay axis SAXIS of the third phase difference layer 1400 and the transmission axis TAXIS of the polarizer 1100 refers to the angle formed by the transmission axis TAXIS of the polarizer 1100 and the delay axis SAXIS of the third phase difference layer 1400. Since the delay axis SAXIS of the third phase difference layer 1400 and the transmission axis TAXIS of the polarizer 1100 are defined on a plane defined by the first direction DR1 and the second direction DR2, the angle θ between the delay axis SAXIS of the third phase difference layer 1400 and the transmission axis TAXIS of the polarizer 1100 may be defined on a plane defined by the first direction DR1 and the second direction DR2.

[0154] In this specification, the delay axis refers to the axis where the refractive index of the polarized light in the plane reaches the maximum. The delay axis can also be called the lag axis or slow axis. Also, in this specification, the "absorption axis" refers to the axis that absorbs linearly polarized light. The "absorption axis" can be an axis oriented perpendicular to the "transmission axis".

[0155] Therefore, the in-plane phase difference value R of the third phase difference layer 1400 at a wavelength of 550 nm is o It may be greater than or equal to 37.5 nm and less than or equal to 237.5 nm.

[0156] The in-plane phase difference value R of the third phase difference layer 1400 o It can be calculated as follows:

[0157] Mathematical formula 2

[0158] R o =(nx-ny)×d, nx≥ny

[0159] In Mathematical Formula 2, nx and ny represent the film's on-surface refractive index. When the vibration direction in which the on-surface refractive index reaches a maximum is set to x, nx represents the refractive index based on light vibrating in the vibration direction, and ny represents the refractive index in a direction perpendicular to nx. d represents the film's thickness.

[0160] Each of the first phase difference layer 1200 and the second phase difference layer 1300 can be formed as a film type or a liquid crystal coating, for example. The film type phase difference layer can be obtained by orienting the polymer film in a uniaxial direction, a biaxial direction or other appropriate methods. For example, the polymer film may include cyclic polymer olefins (COP), polycarbonates, polyesters, polysulfones, polyethersulfones, polystyrenes, polyolefins, polyvinyl alcohols, cellulose acetates, polymethyl methacrylates, polyvinyl chlorides, polyacrylates, polyamide polymers, etc.

[0161] The liquid crystal coating type phase difference layer can be manufactured by using polyimide or reactive liquid crystal composition. For example, the reactive liquid crystal composition can be coated on the substrate and oriented by light orientation, and then a nematic liquid crystal material is coated and the liquid crystal material is oriented to manufacture. As another example, polyimide can be coated on the substrate and imidized, and then physically oriented by rubbing, and then a nematic liquid crystal material is coated and the liquid crystal material is oriented to manufacture.

[0162] In one embodiment, each of the first phase difference layer 1200, the second phase difference layer 1300 and the third phase difference layer 1400 may be formed as a liquid crystal coating. In another exemplary embodiment, the second phase difference layer 1300 and the third phase difference layer 1400 may also be formed as a liquid crystal coating, and the first phase difference layer 1200 may also be formed as a film type.

[0163] In one embodiment, by forming the third phase difference layer 1400 as a liquid crystal coating, a thick polymer film such as circular olefin polymer (COP) can be substituted on the polarizer 1100 to realize a thin polarization member POL.

[0164] In the case where the liquid crystal coating type phase difference layer includes a nematic liquid crystal substance, the nematic liquid crystal may have a rod type structure of the following structural formula 1.

[0165] [Structural Formula 1]

[0166]

[0167] At this time, the terminal / linkage group can affect the length and viscosity of the liquid crystal molecules. The terminal group can be an alkyl, alkoxy, alkenyl or alkenyloxy group with a carbon number of 1 to 20. The linkage group can be toluene, vinyl ester, CC bond, OCH 2 or (CH 2 ) n , and n may be 1 to 20. However, Structural Formula 1 is only an example of the present specification, and the examples of the present specification are not limited thereto.

[0168] In addition, in Structural Formula 1, the central group may affect the refractive index value and the refractive index anisotropy property. The central group may include one or more selected from the following Chemical Formulas 1 to 8, but the embodiments of the present specification are not limited thereto.

[0169] Chemical formula 1

[0170]

[0171] Chemical formula 2

[0172]

[0173] Chemical formula 3

[0174]

[0175] Chemical formula 4

[0176]

[0177] Chemical formula 5

[0178]

[0179] Chemical formula 6

[0180]

[0181] Chemical formula 7

[0182]

[0183] Chemical formula 8

[0184]

[0185] In Chemical Formula 1 and Chemical Formula 2, n may be 1 to 10.

[0186] In Structural Formula 1, the terminal group may affect polarity. The terminal group may be selected from an alkyl group having 1 to 20 carbon atoms, an alkoxy group, CN, and a halogen atom.

[0187] In Structural Formula 1, the short-wavelength refractive index tends to increase with the aromatic ring content of the central group. Therefore, the wavelength dispersion can be adjusted by appropriately adjusting the ratio of the aromatic ring of the central group and the terminal group, but this is only one example.

[0188] The first phase difference layer 1200 and the second phase difference layer 1300 may be bonded or adhered to the polarizer 1100 or the third phase difference layer 1400 by a bonding agent or adhesive. The bonding agent or adhesive may be an ultraviolet curing type, but is not limited thereto.

[0189] The polarization member POL described above can be manufactured by bonding the first part PR1 and the second part PR2 to each other after manufacturing them separately. For example, after bonding the first phase difference layer 1200 and the second phase difference layer 1300 of the polarizer 1100, an orientation film is coated on the substrate and physically oriented or optically oriented, a liquid crystal material is coated on the orientation film to form the third phase difference layer 1400, and then the third phase difference layer 1400 is stacked on the upper surface of the polarizer 1100, and then the substrate and the orientation film are removed to manufacture the polarization member POL.

[0190] In another exemplary embodiment, after an alignment film is coated on the upper surface of the polarizer 1100 and physically or optically aligned, a liquid crystal material is coated on the alignment film to form the third phase difference layer 1400. Subsequently, the first phase difference layer 1200 and the second phase difference layer 1300 may also be sequentially bonded on the lower surface of the polarizer 1100 to manufacture the polarization member POL.

[0191] like Figure 7 As shown, light incident to the polarization member POL from the panel side is in a non-polarized state, but it can be linearly polarized by the polarizer 1100 and elliptically polarized in the third phase difference layer 1400. Thus, a viewer wearing polarized sunglasses can view the image of the display device 10 through the polarization member POL.

[0192] Figure 8 is an exploded perspective view showing a polarization member according to another embodiment.

[0193] Reference Figure 8 , this embodiment is different from the above Figure 5The difference between the embodiment of the present invention and the embodiment of the present invention is that a first protective film 1500 is added between the polarizer 1100 and the first phase difference layer 1200. Hereinafter, descriptions repeated with the above-mentioned embodiment will be omitted, and the differences will be described.

[0194] The polarization member POL may include a first portion PR1 and a second portion PR2. The first portion PR1 may include a polarizer 1100, a first protective film 1500, a first phase difference layer 1200, and a second phase difference layer 1300. The second portion PR2 may include a third phase difference layer 1400.

[0195] The first protective film 1500 may be disposed between the polarizer 1100 and the first phase difference layer 1200. The first protective film 1500 may be directly disposed on the lower surface of the polarizer 1100 to protect the polarizer 1100. An adhesive or a bonding agent may be disposed between the first protective film 1500 and the first phase difference layer 1200, and the adhesive or the bonding agent may be an ultraviolet curing type, but is not limited thereto.

[0196] The first protective film 1500 may include a resin film having excellent transparency, mechanical strength, thermal stability, moisture barrier, and isotropic properties. For example, the first protective film 1500 may include an acrylic resin film of polymethyl (meth) acrylate, polyethyl (meth) acrylate, etc., a polyester resin film of polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, polybutylene terephthalate, etc., a cellulose resin film of diacetyl cellulose, triacetyl cellulose, etc., polyethylene, polypropylene, a polyolefin having a ring or norbornene structure, a polyolefin resin film of ethylene-propylene copolymer, etc., etc.

[0197] The first protective film 1500 may further include additives. Examples of the additives described above include ultraviolet absorbers, whitening agents, silicon oxide dispersants, antioxidants, pH adjusters, and leveling agents. The first protective film 1500 may be a stacked structure consisting of a single layer or multiple layers.

[0198] According to the present embodiment, the first protection film 1500 is further included in the polarization member POL to protect the polarizer 1100 , so that the reliability of the polarization member POL can be improved.

[0199] Fig. 9 is an exploded perspective view showing a polarization member according to still another embodiment.

[0200] Reference Fig. 9 , this embodiment is different from the above Figure 5The difference between the embodiment of the present invention and the embodiment of the present invention is that a second protective film 1600 is additionally provided between the polarizer 1100 and the third phase difference layer 1400. Hereinafter, descriptions repeated with the above-mentioned embodiment will be omitted, and differences will be described.

[0201] The polarization member POL may include a first portion PR1 and a second portion PR2. The first portion PR1 may include a polarizer 1100, a first phase difference layer 1200, a second phase difference layer 1300, and a second protective film 1600. The second portion PR2 may include a third phase difference layer 1400.

[0202] The second protective film 1600 may be disposed between the polarizer 1100 and the third phase difference layer 1400. The second protective film 1600 may be directly disposed on the upper surface of the polarizer 1100 to protect the polarizer 1100. A bonding agent or adhesive may be disposed between the second protective film 1600 and the third phase difference layer 1400, and the bonding agent or adhesive may be an ultraviolet curing type, but is not limited thereto.

[0203] The second protective film 1600 may include the same material as the first protective film 1500 described above. The second protective film 1600 may include a resin film having excellent transparency, mechanical strength, thermal stability, moisture barrier, and isotropic properties. For example, the second protective film 1600 may include an acrylic resin film of polymethyl (meth) acrylate, polyethyl (meth) acrylate, etc., a polyester resin film of polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, polybutylene terephthalate, etc., a cellulose resin film of diacetyl cellulose, triacetyl cellulose, etc., polyethylene, polypropylene, a polyolefin having a ring or norbornene structure, a polyolefin resin film of ethylene-propylene copolymer, etc., etc.

[0204] The second protective film 1600 may further include additives. Examples of the additives described above include ultraviolet absorbers, whitening agents, silicon oxide dispersants, antioxidants, pH adjusters, and leveling agents. The second protective film 1600 may be a stacked structure consisting of a single layer or multiple layers.

[0205] According to the present embodiment, the second protection film 1600 is further included in the polarization member POL to protect the upper surface of the polarizer 1100 , so that the reliability of the polarization member POL can be improved.

[0206] Fig.10 is an exploded perspective view showing a polarization member according to still another embodiment.

[0207] Reference Fig.10 , this embodiment is different from the above Figure 5The difference between the embodiment of the present invention is that a first protective film 1500 is added between the polarizer 1100 and the first phase difference layer 1200, and a second protective film 1600 is added between the polarizer 1100 and the third phase difference layer 1400. Hereinafter, descriptions repeated with the above-mentioned embodiment will be omitted, and differences will be described.

[0208] The polarization member POL may include a first portion PR1 and a second portion PR2. The first portion PR1 may include a polarizer 1100, a first protective film 1500, a second protective film 1600, a first phase difference layer 1200 and a second phase difference layer 1300. The second portion PR2 may include a third phase difference layer 1400.

[0209] The first protective film 1500 may be directly disposed on the lower surface of the polarizer 1100 to protect the lower surface of the polarizer 1100 , and the second protective film 1600 may be directly disposed on the upper surface of the polarizer 1100 to protect the upper surface of the polarizer 1100 .

[0210] According to the present embodiment, the first protective film 1500 and the second protective film 1600 are further included in the polarization member POL to protect the upper and lower surfaces of the polarizer 1100 , so that the reliability of the polarization member POL can be improved.

[0211] Fig.11 is an exploded perspective view showing a polarization member according to still another embodiment.

[0212] Reference Fig.11 , this embodiment is different from the above Figure 8 The difference between the embodiment of the present invention and the embodiment of the present invention is that a third protective film 1700 is additionally provided on the third phase difference layer 1400. Hereinafter, descriptions repeated with the above-mentioned embodiment will be omitted, and differences will be described.

[0213] The polarization member POL may include a first portion PR1 and a second portion PR2. The first portion PR1 may include a polarizer 1100, a first protective film 1500, a first phase difference layer 1200 and a second phase difference layer 1300. The second portion PR2 may include a third protective film 1700 and a third phase difference layer 1400.

[0214] The third protective film 1700 may be disposed on the third phase difference layer 1400. The third protective film 1700 may be disposed on the third phase difference layer 1400 to protect the polarizer 1100 from ultraviolet rays included in light incident from the outside.

[0215] The third protective film 1700 may include a resin film having excellent transparency, mechanical strength, thermal stability, moisture barrier, and isotropic properties. For example, the third protective film 1700 may include an acrylic resin film of polymethyl (meth) acrylate, polyethyl (meth) acrylate, etc., a polyester resin film of polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, polybutylene terephthalate, etc., a cellulose resin film of diacetyl cellulose, triacetyl cellulose, etc., polyethylene, polypropylene, a polyolefin having a ring or norbornene structure, a polyolefin resin film of ethylene-propylene copolymer, etc., etc.

[0216] The third protective film 1700 may include an ultraviolet absorber to prevent ultraviolet rays from irradiating the polarizer 1100. The ultraviolet absorber may include, for example, triazine ultraviolet absorbers, benzophenone ultraviolet absorbers, benzotriazole ultraviolet absorbers, benzoate ultraviolet absorbers, and cyanoacrylate ultraviolet absorbers. These may be used alone or in combination of two or more. As preferred commercially available ultraviolet absorbers, for example, Sumisorb (registered trademark) 340 manufactured by SUMIKACHEMTEX (Strain), Adekastab (registered trademark) LA-31 manufactured by ADEKA (Strain), and Tinuvin (registered trademark) 1577 manufactured by BASF Japan (Strain) may be cited.

[0217] Furthermore, the third protective film 1700 may further include additives. Examples of additives include whitening agents, silicon oxide dispersants, antioxidants, pH adjusters, and leveling agents. The third protective film 1700 may be a stacked structure consisting of a single layer or multiple layers.

[0218] A bonding agent or adhesive may be disposed between the third protection film 1700 and the third phase difference layer 1400 , and the bonding agent or adhesive may be an ultraviolet curing type, but is not limited thereto.

[0219] In the present embodiment, the third protective film 1700 including an ultraviolet absorber is disposed on the polarizer 1100 and the third phase difference layer 1400 , so that the polarizer 1100 can be protected from ultraviolet rays incident from the outside.

[0220] Fig.12 is an exploded perspective view showing a polarization member according to still another embodiment.

[0221] Reference Fig.12 , this embodiment is different from the above Figure 5 The difference between the embodiment of the present invention and the embodiment of the present invention is that a hard coating layer 1800 is added to the third phase difference layer 1400. Hereinafter, descriptions repeated with the above-mentioned embodiment will be omitted, and differences will be described.

[0222] The polarization member POL may include a first portion PR1 and a second portion PR2. The first portion PR1 may include a polarizer 1100, a first phase difference layer 1200, and a second phase difference layer 1300. The second portion PR2 may include a third phase difference layer 1400 and a hard coating layer 1800.

[0223] The hard coating layer 1800 may be disposed on the third phase difference layer 1400. The hard coating layer 1800 may protect the polarization member POL from external impact and may directly protect the third phase difference layer 1400. The hard coating layer 1800 may be directly disposed on the third phase difference layer 1400.

[0224] The hard coating layer 1800 may be formed using a hard coating composition including a light-transmitting resin, a photoinitiator, and a solvent. The hard coating composition may further include an ultraviolet absorber, inorganic oxide fine particles, a fluorine-containing additive, and the like.

[0225] The light-transmitting resin is a light-curing resin, and the light-curing resin may include a light-curing (meth)acrylate oligomer and / or monomer.

[0226] As the light-curing (meth)acrylate oligomer, epoxy (meth)acrylate, urethane (meth)acrylate, etc. are generally used, and urethane (meth)acrylate is preferred. Urethane (meth)acrylate can be prepared by reacting a (meth)acrylate having a hydroxyl group in the molecule and a compound having an isocyanate group in the presence of a catalyst. Specific examples of (meth)acrylates having a hydroxyl group in the molecule include 2-hydroxyethyl (meth)acrylate, 2-hydroxyisopropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, caprolactone ring-opening hydroxy acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, pentaerythritol hexa(meth)acrylate, etc. Specific examples of the compound having the isocyanate group include 1,4-diisocyanate butane, 1,6-diisocyanate hexane, 1,8-diisocyanate octane, 1,12-diisocyanate dodecane, 1,5-diisocyanate-2-methylpentane, trimethyl-1,6-diisocyanate hexane, 1,3-bis(isocyanate methyl)cyclohexane, trans-1,4-cyclohexene diisocyanate, 4,4'-methylenebis(cyclohexyl isocyanate ), isophorone diisocyanate, toluene-2,4-diisocyanate, toluene-2,6-diisocyanate, xylene 1,4-diisocyanate, tetramethylxylene-1,3-diisocyanate, 1-chloromethyl-2,4-diisocyanate, 4,4'-methylenebis(2,6-xylyl isocyanate), 4,4'-oxybis(phenyl isocyanate), trifunctional isocyanates derived from hexamethylene diisocyanate, trimethylol propanol adduct toluene diisocyanate, etc.

[0227] The monomers may be used without limitation as long as they are commonly used, and preferably monomers having an unsaturated group such as a (meth)acryloyl group, a vinyl group, a styryl group, an allyl group, etc. in the molecule as the photocurable functional group, and more preferably monomers having a (meth)acryloyl group.

[0228] As a specific example of the monomer having the (meth)acryloyl group, it can be selected from neopentyl glycol acrylate, 1,6-hexanediol di(meth)acrylate, propylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, polypropylene glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, trimethylolethane tri(meth)acrylate, 1,2,4-cyclohexane tetra(meth)acrylate, pentapropylene tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol tri(meth)acrylate, At least one selected from the group consisting of acrylate, dipentaerythritol penta(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol hexa(meth)acrylate, tripentaerythritol tri(meth)acrylate, tripentaerythritol hexa(meth)acrylate, bis(2-hydroxyethyl)isocyanurate di(meth)acrylate, hydroxyethyl(meth)acrylate, hydroxypropyl(meth)acrylate, hydroxybutyl(meth)acrylate, isooctyl(meth)acrylate, isodecyl(meth)acrylate, stearyl(meth)acrylate, trihydroxyfurfuryl(meth)acrylate, phenoxyethyl(meth)acrylate and isoborneol(meth)acrylate.

[0229] The photocurable (meth)acrylate oligomers and monomers exemplified as the light-transmitting resins described above may be used alone or in combination of two or more.

[0230] As the photoinitiator, any photoinitiator that is used in the art and can form free radicals by light irradiation can be used without limitation, for example, hydroxyketones, aminoketones, dehydrogenation cyclic photoinitiators, etc. can be used.

[0231] Specifically, the photoinitiator includes 2-methyl-1-[4-(methylthio)phenyl]2-morpholinoacetone-1, benzophenone, benzyl dimethyl ketal, 2-hydroxy-2-methyl-1-phenyl-1-one, 2,2-dimethoxy-2-phenyl-acetophenone, anthraquinone, fluorene, triphenylamine, carbazole, 3-methylacetophenone, 4-chloroacetophenone, 4,4-dimethoxyacetophenone, 4,4-diaminobenzophenone, 1-hydroxychlorohexylbenzophenone, benzophenone, diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide, etc. The exemplified photoinitiators can be used alone or in combination of two or more.

[0232] As long as it is used in the technical field, the solvent can be used without restriction. Specifically, alcohols (methanol, ethanol, isopropanol, butanol, methyl cellosolve, ethyl cellosolve, etc.), ketones (methyl ethyl ketone, methyl butyl ketone, methyl isobutyl ketone, dimethyl ketone, dipropyl ketone, cyclohexanone, etc.), acetates (ethyl acetate, propyl acetate, n-butyl acetate, tert-butyl acetate, methoxyethyl acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate, methoxypentyl acetate, etc.), hexanes (hexane, heptane, octane, etc.), benzenes (benzene, toluene, xylene, etc.), ethers (diglyme, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether, propylene glycol monomethyl ether, etc.), etc. can be used. The exemplified solvents can be used individually or in combination of two or more.

[0233] The thickness of the hard coating layer 1800 may be 3 to 20 μm, and specifically may be 3 to 15 μm. By including the hard coating layer 1800 having a thickness in the above range, excellent surface hardness, ease of handling, and softness may be achieved.

[0234] The method for coating the hard coating composition is not particularly limited as long as it is a method applicable in the technical field to which the present technology belongs, and for example, a scraper coating method, a doctor blade coating method, a roller coating method, a blade coating method, an extrusion coating method, a micro gravure coating method, a notch wheel coating method, a slit extrusion coating method, a lip coating method, a solution casting method, etc. can be used.

[0235] In the present embodiment, the hard coating layer 1800 is disposed on the third phase difference layer 1400 , so that the polarization member POL can be protected from external impact.

[0236] Fig.13 is an exploded perspective view showing a polarization member according to still another embodiment.

[0237] Reference Fig.13 , this embodiment is different from the above Fig.12 The difference between the embodiment of the present invention and the embodiment of the present invention is that a first protective film 1500 is added between the polarizer 1100 and the first phase difference layer 1200. Hereinafter, descriptions repeated with the above-mentioned embodiment will be omitted, and differences will be described.

[0238] The polarization member POL may include a first portion PR1 and a second portion PR2. The first portion PR1 may include a polarizer 1100, a first protective film 1500, a first phase difference layer 1200, and a second phase difference layer 1300. The second portion PR2 may include a third phase difference layer 1400 and a hard coating layer 1800. Figure 8Detailed description is given in , so it is briefly described here.

[0239] The first protective film 1500 may be disposed between the polarizer 1100 and the first phase difference layer 1200. The first protective film 1500 may be directly disposed on the lower surface of the polarizer 1100 to protect the polarizer 1100. A bonding agent or adhesive may be disposed between the first protective film 1500 and the first phase difference layer 1200, and the bonding agent or adhesive may be an ultraviolet curing type, but is not limited thereto.

[0240] According to the present embodiment, the first protection film 1500 is further included in the polarization member POL to protect the polarizer 1100 , so that the reliability of the polarization member POL can be improved.

[0241] Fig.14 is an exploded perspective view showing a polarization member according to still another embodiment.

[0242] Reference Fig.14 , this embodiment is different from the above Fig.13 The difference between the embodiment of the present invention and the embodiment of the present invention is that a second protective film 1600 is further added between the polarizer 1100 and the third phase difference layer 1400. Hereinafter, the description repeated with the above-mentioned embodiment will be omitted, and the differences will be described.

[0243] The polarization member POL may include a first portion PR1 and a second portion PR2. The first portion PR1 may include a polarizer 1100, a first protective film 1500, a second protective film 1600, a first phase difference layer 1200, and a second phase difference layer 1300. The second portion PR2 may include a third phase difference layer 1400 and a hard coating layer 1800. Fig. 9 Detailed description is given in , so it is briefly described here.

[0244] The second protective film 1600 may be disposed between the polarizer 1100 and the third phase difference layer 1400. The second protective film 1600 may be directly disposed on the upper surface of the polarizer 1100 to protect the polarizer 1100. A bonding agent or adhesive may be disposed between the second protective film 1600 and the third phase difference layer 1400, and the bonding agent or adhesive may be an ultraviolet curing type, but is not limited thereto.

[0245] According to the present embodiment, the first protective film 1500 and the second protective film 1600 are further included in the polarization member POL to protect both the upper and lower surfaces of the polarizer 1100 , so that the reliability of the polarization member POL may be improved.

[0246] Fig.15 is an exploded perspective view showing a polarization member according to still another embodiment.

[0247] Reference Fig.15 , this embodiment is different from the above Fig.11 The difference between the embodiment of the present invention and the embodiment of the present invention is that a hard coating layer 1800 is further added on the third protective film 1700. Hereinafter, the description repeated with the above-mentioned embodiment will be omitted, and the difference will be described.

[0248] The polarization member POL may include a first portion PR1 and a second portion PR2. The first portion PR1 may include a polarizer 1100, a first protective film 1500, a first phase difference layer 1200, and a second phase difference layer 1300. The second portion PR2 may include a third phase difference layer 1400, a third protective film 1700, and a hard coating layer 1800. The hard coating layer 1800 has been Fig.12 Detailed description is given in , so it is briefly described here.

[0249] The hard coating layer 1800 may be disposed on the third protective film 1700. For example, the hard coating layer 1800 may be directly disposed on the upper surface of the third protective film 1700. The hard coating layer 1800 may protect the polarization member POL from external impact.

[0250] In the present embodiment, the hard coating layer 1800 is disposed on the third protective film 1700 so that the polarization member POL can be protected from external impact.

[0251] The above Figures 5 to 15 The polarization component POL shown can be applicable to an organic light-emitting display device using an organic light-emitting diode, a quantum dot light-emitting display device including a quantum dot light-emitting layer, an inorganic light-emitting display device including an inorganic semiconductor, an ultra-small light-emitting display device using a micro or nano light emitting diode (micro or nano light emitting diode (micro LED or nano LED)) with a micro unit or a nano unit, a liquid crystal display device including a liquid crystal layer, a plasma display device, an electroluminescent display device, and the like.

[0252] In order to facilitate the understanding of the present invention, experimental examples including preferred embodiments will be presented below. However, these embodiments are only intended to illustrate the present invention and are not intended to limit the appended claims. Those skilled in the art clearly understand that various changes and modifications can be made to the embodiments within the scope of the present invention and the technical concept, and such changes and modifications fall within the appended claims.

[0253] <Manufacturing example: Figure 8 Manufacturing of polarization components>

[0254] A transparent unstretched polyvinyl alcohol film (PE60, KURARAY Co., Ltd.) having a saponification degree of 99.9% or more was immersed in water (deionized water) at 30°C for 2 minutes to swell, and then immersed in a dyeing solution containing 1.25 mM / L iodine, 1.25 wt% potassium iodide, and 0.0005 wt% nitric acid at 30°C for 4 minutes to dye. Specifically, the film was stretched at a stretch ratio of 1.3 times and 1.4 times in the swelling and dyeing steps, respectively, so that the cumulative stretch ratio until the dyeing tank was obtained was 1.82 times.

[0255] Next, crosslink by immersing in a crosslinking aqueous solution at 50°C containing 10% by weight of potassium iodide and 3.7% by weight of boric acid for 30 seconds (first crosslink), and stretch at a stretch ratio of 2 times. Subsequently, crosslink by immersing in a crosslinking aqueous solution at 50°C containing 10% by weight of potassium iodide and 3.7% by weight of boric acid for 20 seconds (second crosslink), and stretch at a stretch ratio of 1.5 times (the cumulative stretch ratio of the first crosslink and the second crosslink is 3 times). The total cumulative stretch ratio of the swelling, dyeing and crosslinking steps reaches 5.46 times. The crosslinked polyvinyl alcohol film is dried in an oven at 70°C for 4 minutes to manufacture a polarizer 1100.

[0256] The first protective film 1500 is attached to the lower surface of the polarizer 1100 by an adhesive, and the first phase difference layer 1200 and the second phase difference layer 1300 are attached to the lower surface of the first protective film 1500 by an adhesive. Subsequently, an orientation film is coated on the substrate and irradiated with ultraviolet rays to photo-orient the orientation film, and a nematic liquid crystal is coated on the orientation film and irradiated with ultraviolet rays to harden it, thereby manufacturing the third phase difference layer 1400. Then, the third phase difference layer 1400 is stacked on the upper surface of the polarizer 1100, and the substrate and the orientation film are peeled off together to manufacture a polarization component. Thus, a structure consisting of "third phase difference layer 1400, polarizer 1100, first protective film 1500, first phase difference layer 1200 and second phase difference layer 1300" from top to bottom is manufactured. Figure 8 The polarization member POL shown in FIG. 1 is a polarization member POL. In addition, a camera hole ( Fig.18 At this time, the angle between the delay axis of the third phase difference layer 1400 and the transmission axis of the polarizer 1100 is formed to be 45°, so that the polarization member POL is manufactured to have a phase difference of 137.5 nm.

[0257] <Example>

[0258] Example 1 and Example 2

[0259] The liquid crystals of the third phase difference layer are manufactured to be rod-type liquid crystals that are different from each other among nematic liquid crystals.

[0260] Comparative Example

[0261] The liquid crystal of the third phase difference layer is manufactured into a disk type liquid crystal in a nematic liquid crystal.

[0262] <Experimental example>

[0263] Reliability evaluation of polarization components

[0264] Reliability evaluation was performed on the polarization members manufactured according to Examples 1 and 2 and the comparative example.

[0265] Fig.16 It is a graph showing reliability evaluation conditions indicating temperature changes corresponding to time.

[0266] In reliability evaluation, Fig.16 As shown, a case where the polarizing member is exposed at -40°C for 25 minutes, the temperature is raised to 80°C for 5 minutes, and then exposed at 80°C for 25 minutes is defined as 1 cycle, and this is repeated up to 500 cycles.

[0267] Fig.17 This is a graph showing the reliability evaluation results of the polarization component. Fig.18 This is a diagram showing a portion where cracks in the third phase difference layer of the polarizing member are observed.

[0268] exist Fig.17 The rod 1 (Rod1) shown on the horizontal axis is Example 1, the rod 2 (Rod2) is Example 2, and the disk (Disk) is a polarization member according to the comparative example. ①, ②, ③ and ④ represent the numbers of different samples manufactured under the same conditions as Examples 1, 2 and Comparative Examples. That is, under the same conditions as Examples 1, 2 and Comparative Examples, four polarizing film samples were manufactured and reliability evaluations were performed respectively. The phase difference crack size on the vertical axis represents the length of the crack occurring in the third phase difference plate.

[0269] For cracks in the third phase difference plate of the polarization member POL, such as Fig.18 As shown, the camera hole CH is viewed from the upper side 1, the left side 2, the right side 3 and the lower side 4.

[0270] Reference Fig.17In the polarization member using rod-type liquid crystal in nematic liquid crystal in the third phase difference layer according to Examples 1 and 2, no crack occurred in the third phase difference layer in the reliability evaluation during 150, 300 and 500 cycles. On the other hand, in the polarization member using discotic liquid crystal in nematic liquid crystal in the third phase difference layer according to the comparative example, cracks occurred in the third phase difference layer in 150 cycles, and it was shown that the crack size gradually increased with the increase in cycles.

[0271] Fig.19 is an optical image of the camera hole portion after 150 cycles of reliability evaluation in the polarization member manufactured according to Example 1, Fig. 20 is an optical image of the camera hole portion after 150 cycles of reliability evaluation in the polarization member manufactured according to Example 2, and Fig.21 1 is an optical image of a camera hole portion after 150 cycles of reliability evaluation were performed in the polarization member manufactured according to the comparative example. Fig. 22 is an optical image of the camera hole portion after 500 cycles of reliability evaluation in the polarization member manufactured according to Example 1, Fig.23 is an optical image of a camera hole portion after 500 cycles of reliability evaluation in the polarization member manufactured according to Example 2, and Fig.24 This is an optical image of the camera hole portion of the polarization member manufactured according to the comparative example after 500 cycles of reliability evaluation.

[0272] Reference Figures 19 to 21 , when the camera hole portion of each polarization member was observed after 150 cycles of reliability evaluation, cracks did not occur in Examples 1 and 2, but cracks occurred in the comparative example.

[0273] And, refer to Figure 22 to Figure 24 , after performing 500 cycles of reliability evaluation, the camera hole portion of each polarization member was observed, and no cracks occurred in Examples 1 and 2, but cracks occurred in the comparative example.

[0274] Fig.25 is a SEM image of the camera hole portion after 500 cycles of reliability evaluation in the polarization member manufactured according to Example 1, Fig.26 is a SEM image of a camera hole portion after 500 cycles of reliability evaluation in a polarization member manufactured according to a comparative example, and Fig. 27 Yes Fig.26 The image is enlarged.

[0275] Reference Figure 25 to Figure 27, when an SEM image showing a cross section of a camera hole portion of a polarization member was observed after 500 cycles of reliability evaluation, cracks did not occur in the third phase difference layer in Example 1, but cracks occurred in the comparative example.

[0276] From this result, it can be seen that the third phase difference layer including rod-type liquid crystals in nematic liquid crystals on the polarizer has no cracks at all and thus has excellent reliability, while the third phase difference layer including discotic liquid crystals has cracks and thus cannot satisfy the reliability evaluation. Therefore, according to the present invention, the third phase difference layer includes rod-type liquid crystals in nematic liquid crystals, so that a polarization member with excellent reliability can be provided.

[0277] Although the embodiments of the present invention are described above with reference to the attached drawings, it should be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical concept or essential technical features of the present invention. Therefore, the embodiments described above should be understood to be illustrative in all aspects and not restrictive.

Claims

1. A polarization component, comprising: a polarizer comprising an absorption axis and a transmission axis that cross each other; a first phase difference layer, wherein the first phase difference layer is arranged at a lower part of the polarizer; a second phase difference layer, wherein the second phase difference layer is arranged below the first phase difference layer; as well as a third phase difference layer, the third phase difference layer being arranged on the upper part of the polarizer, The in-plane phase difference value of the third phase difference layer is 37.5nm to 237.5nm, An angle between the delay axis of the third phase difference layer and the transmission axis of the polarizer is 15° to 75°. 2 . The polarization member according to claim 1 , wherein the third phase difference layer includes rod-type nematic liquid crystal. The polarization member according to claim 1 , wherein the third phase difference layer comprises a λ / 4 phase difference layer. 4 . The polarization member according to claim 1 , the first phase difference layer comprises a λ / 2 phase difference layer, and the second phase difference layer comprises a λ / 4 phase difference layer. 5 . The polarization member according to claim 1 , the first phase difference layer comprises a λ / 2 phase difference layer, and the second phase difference layer comprises a positive C plate.

6. The polarization member according to claim 1, further comprising: a first protective film, the first protective film being arranged between the polarizer and the first phase difference layer, The first protective film includes an acrylic resin film, a polyester resin film, a cellulose resin film, or a polyolefin resin film.

7. The polarization member according to claim 6, further comprising: A second protective film is disposed between the polarizer and the third phase difference layer.

8. The polarization member according to claim 1, further comprising: A third protective film is arranged on the third phase difference layer.

9. The polarization member according to claim 8, further comprising: a hard coating layer disposed on the third protective film, The hard coating layer includes (meth)acrylate.

10. The polarization member according to claim 1, further comprising: a second protective film, the second protective film being arranged between the polarizer and the third phase difference layer, The second protective film includes an acrylic resin film, a polyester resin film, a cellulose resin film, or a polyolefin resin film.

11. The polarization member according to claim 1, further comprising: a hard coating layer, the hard coating layer being arranged on the third phase difference layer, The hard coating layer includes (meth)acrylate.

12. The polarization member according to claim 11, further comprising: a first protective film, the first protective film being arranged between the polarizer and the first phase difference layer, The first protective film includes an acrylic resin film, a polyester resin film, a cellulose resin film, or a polyolefin resin film.

13. The polarization member according to claim 12, further comprising: A second protective film is disposed between the polarizer and the third phase difference layer.

14. A display device, comprising: Display panel; as well as a polarization member disposed on the display panel, The polarization member comprises: a polarizer comprising an absorption axis and a transmission axis that cross each other; a first phase difference layer, wherein the first phase difference layer is arranged at a lower part of the polarizer; a second phase difference layer, the second phase difference layer being arranged below the first phase difference layer; and a third phase difference layer, the third phase difference layer being arranged on the upper part of the polarizer, The in-plane phase difference value of the third phase difference layer is 37.5nm to 237.5nm, An angle between the delay axis of the third phase difference layer and the transmission axis of the polarizer is 15° to 75°.

15. The display device according to claim 14, wherein the display panel comprises: A pixel electrode, wherein the pixel electrode is arranged on the substrate; a light-emitting layer, wherein the light-emitting layer is arranged on the pixel electrode; as well as A common electrode is disposed on the light emitting layer.

16. The display device according to claim 15, wherein the display panel further comprises: an encapsulation layer, the encapsulation layer being arranged on the common electrode; as well as A touch sensing portion is arranged on the encapsulation layer.

17. The display device according to claim 16, further comprising: A cover window is disposed on the polarization member. 18 . The display device according to claim 14 , wherein the third phase difference layer comprises rod-shaped nematic liquid crystal. The display device according to claim 14 , wherein the third phase difference layer comprises a λ / 4 phase difference layer. 20 . The display device according to claim 14 , wherein the first phase difference layer comprises a λ / 2 phase difference layer, and the second phase difference layer comprises a λ / 4 phase difference layer.

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