KR102564213B1 - Light emitting diode device display apparatus - Google Patents

Abstract

It includes a light emitting device panel and a polarizing plate formed on the light emitting device panel, wherein the polarizing plate includes a polarizing film and a patterned retardation layer formed on a lower surface of the polarizing film, wherein the patterned retardation layer is formed alternately with each other in first retardation regions. and a second retardation area, wherein the first retardation area and the second retardation area have different slow axis directions, and the pattern retardation layer is a reverse wavelength dispersion retardation layer. .

Description

Light emitting device display {LIGHT EMITTING DIODE DEVICE DISPLAY APPARATUS}

The present invention relates to a light emitting element display device. More specifically, the present invention relates to a light emitting device display having a thin polarizing plate, having low reflectance on the front and side surfaces, and low color change on the side surface.

In an image display device, improving contrast representing a difference in luminance between the brightest part and the darkest part of a screen is one of the very important tasks. In order to increase the contrast, simply increasing the luminance of the light source may be considered as one method. However, this method has a problem in that high stress is applied to the device by increasing power consumption generated by light emitting organic materials of the organic light emitting diode (OLED). Therefore, in organic light emitting diodes, one polarizer is generally used to adjust the reflectance of light incident on the panel.

A polarizing plate having a two-sheet type each containing an anisotropic material has been proposed. However, in order to reduce the thickness, a one-sheet type polarizer was developed using reverse wavelength liquid crystal. However, there is still a limit to the antireflection effect in the oblique direction, especially the color change. As an improvement plan, a polarizing plate provided with a positive C plate along with one sheet has been proposed, but the thickness is increased.

The background art of the present invention is disclosed in Japanese Patent Laid-Open No. 2016-192363 and the like.

SUMMARY OF THE INVENTION An object of the present invention is to provide a light emitting device display having a thin polarizer and having low reflectance on the front and side surfaces and low color change on the side surface without a positive C plate.

Another object of the present invention is to provide a light emitting element display device in which a pattern of a pattern retardation layer is not visually recognized.

The present invention is a light emitting element display device.

1. A light emitting device display device includes a light emitting device panel and a polarizing plate formed on an upper surface of the light emitting device panel, the polarizing plate including a polarizing film and a patterned retardation layer formed on a lower surface of the polarizing film, and the patterned retardation layer has a first retardation region and a second retardation region formed alternately with each other, the first retardation region and the second retardation region have different slow axis directions, and the pattern retardation layer is a reverse wavelength dispersion retardation layer.

In 2.1, the patterned retardation layer has Re (450) / Re (550) greater than or equal to 0.7 and less than 1, and Re (650) / Re (550) greater than 1 and less than or equal to 1.5, where Re (450), Re (550), Re(650) may be an in-plane retardation of the patterned retardation layer at wavelengths of 450 nm, 550 nm, and 650 nm.

In 3.1-2, the patterned retardation layer may have Re (450) of 90 nm to 140 nm, Re (550) of 110 nm to 170 nm, and Re (650) of 140 nm to 190 nm.

In 4.1-3, the patterned retardation layer may have a thickness direction retardation Rth of -150 nm to 150 nm at a wavelength of 550 nm.

In 5.1-4, the patterned retardation layer may have a degree of biaxiality NZ of -2 to 2 at a wavelength of 550 nm.

In 6.1-5, when the absorption axis of the polarizing film is 0°, the angle formed by the first slow axis of the first retardation region is +35° to +55°, and the second slow axis of the second retardation region is The angle formed may be -35° to -55°.

In 7.1-6, the maximum width of the first retardation region may be 10 μm to 500 μm, and the maximum width of the second retardation region may be 10 μm to 500 μm.

In 8.1-7, an adhesive layer, an adhesive layer, or an adhesive layer may be directly formed on the upper or lower surface of the patterned retardation layer.

In 9.1-8, the light emitting element display device may not include a positive C plate.

In 10.1-9, a protective layer may be further formed on an upper surface of the polarizing film.

The present invention provides a light emitting device display having a thin polarizer and having low reflectance on the front and side surfaces and low color change on the side surface without a positive C plate.

The present invention provides a light emitting element display device in which a pattern of a pattern retardation layer is not visually recognized.

1 is a cross-sectional view of a light emitting device display device according to an embodiment of the present invention.
2 is a schematic plan view of a patterned retardation layer in the polarizing plate of the present invention.
3 is a schematic diagram showing a manufacturing method of a patterned retardation layer of the polarizing plate of the present invention.
Figure 4 is a graph showing the color values a*, b* values at the side θ = 60 ° of Examples and Comparative Examples.

With reference to the accompanying drawings, the following examples will be described in detail so that those skilled in the art can easily carry out the present invention. This invention may be embodied in many different forms and is not limited to the embodiments set forth herein. In order to clearly describe the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are attached to the same or similar components throughout the specification. The length and size of each component in the drawings are for explaining the present invention, and the present invention is not limited to the length and size of each component described in the drawings.

In this specification, "upper" and "lower" are defined based on the drawings, and depending on the perspective, "upper" may be changed to "lower" and "lower" to "upper", and "on" or What is referred to as "on" may include not only immediately above but also a case where another structure is intervened in the middle. On the other hand, what is referred to as "directly on", "directly on" or "directly formed" or "directly in contact with" means that no other structure is intervened.

In this specification, “in-plane retardation (Re)” is represented by the following formula A, “thickness direction retardation (Rth)” is represented by the following formula B, and “degree of biaxiality (NZ)” is represented by the following formula C:

[Equation A]

Re = (nx - ny) x d

[Equation B]

Rth = ((nx + ny)/2 - nz) x d

[Equation C]

NZ = (nx - nz)/(nx - ny)

(In the above formulas A to C, nx, ny, nz are the refractive indices in the slow axis direction, the fast axis direction, and the thickness direction of the retardation layer at the measured wavelength, respectively, and d is the thickness of the retardation layer (unit: nm)).

The "measurement wavelength" means a wavelength of 450 nm, 550 nm or 650 nm.

In this specification, the numerical range "X to Y" means greater than or equal to X and less than or equal to Y (X≤ and ≤Y).

Hereinafter, a light emitting device display device according to an embodiment of the present invention will be described.

Referring to FIG. 1 , the light emitting device display device includes a light emitting device panel 100 and a polarizing plate 200 formed on an upper surface of the light emitting device panel 100 .

In the light emitting device display device, a pattern retardation layer 210 and a polarizing film 220 are sequentially formed from the light emitting device panel 100 . In the light emitting device display device, the polarizing plate 200 is sequentially formed on the upper surface of the light emitting device panel 100 in the above-described order, thereby reducing the reflectance and color value on the side surface and obtaining an effect of reducing the thickness of the polarizing plate. When the polarizing film 220 and the pattern retardation layer 210 are sequentially formed from the upper surface of the light emitting device panel 100, the effect of lowering the reflectance and color value on the side is remarkably weak.

The polarizer 200 is formed on the upper surface of the light emitting device panel 100 to improve the screen quality of the light emitting device display device by lowering the reflectance and color values at the side when external light reaches the light emitting device panel 100. can

The polarizing plate 200 includes a patterned retardation layer 210 and a polarizing film 220 formed on an upper surface of the patterned retardation layer 210 .

The patterned retardation layer 210 circularly polarizes external light incident from the polarizing film 200 and reflects it, thereby reducing reflectance and color values on the side surface. As shown in FIG. 1, the patterned retardation layer 210 is a single layer, and through this, the thickness of the polarizing plate can be reduced. The "single layer" means a layer formed by one coating when the patterned retardation layer includes a coating layer, or a layer formed by one film when the patterned retardation layer is a film.

The patterned retardation layer 210 may have a thickness of greater than 0 μm and less than or equal to 10 μm, specifically, 0.1 μm to 8 μm, and more specifically, 0.1 μm to 5 μm. Within the above range, the polarizing plate may be thinned.

The patterned retardation layer 210 is a patterned retardation layer. The "patterned retardation layer" is a layer in which two regions having different slow axis directions are alternately formed. The two regions in which the direction of the slow axis is different from each other are referred to as a first phase difference region and a second phase difference region. The first phase difference region and the second phase difference region have different slow axis directions. By including the patterned retardation layer 210 in the polarizing plate 200, the reflectance and color value on the side surface can be lowered even in a single-layered retardation layer, and the thickness of the retardation layer 210 and the polarizing plate can be significantly reduced. In particular, the patterned retardation layer 210 can reduce color value change on the side even if the polarizer 200 does not include a positive C plate.

In one embodiment, the retardation layer 210 includes only first retardation regions and second retardation regions that have different slow axis directions and are alternately formed.

Referring to FIG. 2 , the pattern retardation layer 210 has a first retardation region 211 having a first slow axis 211a and a second retardation region 212 having a second slow axis 212a alternately. is formed with The first slow axis 211a and the second slow axis 212a cross each other. Since the first slow axis 211a and the second slow axis 212a are formed to cross each other, the pattern retardation layer 210 has the effect of each of the first retardation region 211 and the second retardation region 212 even with a single layer. can be implemented.

The angle between the first slow axis 211a of the first phase difference region 211 and the second slow axis 212a of the second phase difference region 212 is between 80° and 100°, specifically between 85° and 95°. Specifically, it may be 90°. In the above range, the frontal reflectance and the side color may have excellent effects.

The relationship between the first slow axis 211a of the first retardation region 211 and the second slow axis 212a of the second retardation region 212 with the absorption axis of the polarizing film should be considered. Through this, it is possible to remarkably lower the color value and the reflectance on the side.

Specifically, in the first embodiment, when the absorption axis of the polarizing film is 0°, the angle formed by the first slow axis 211a of the first retardation region is +35° to +55°, specifically +40° to + 50°, more specifically +45°, the angle formed by the second slow axis 212a of the second phase difference region is -35° to -55°, specifically -40° to -50°, more specifically -45° can be Through this, it is possible to remarkably lower the color value and the reflectance on the side.

Specifically, in the second embodiment, when the absorption axis of the polarizing film is 0°, the angle formed by the first slow axis 211a of the first retardation region is -35° to -55°, specifically -40° to - 50°, more specifically -45°, the angle formed by the second slow axis 212a of the second phase difference region is +35° to +55°, specifically +40° to +50°, more specifically +45° can be Through this, it is possible to remarkably lower the color value and the reflectance on the side.

In the angle expression, "+" and "-" mean clockwise and counterclockwise angles with respect to the absorption axis of the polarizing film at 0°, respectively.

Preferably, the light emitting element display device can be the first embodiment.

The first phase difference region 211 and the second phase difference region 212 may have the same or different in-plane phase difference. Specifically, the absolute value of the difference in in-plane retardation between the first retardation region 211 and the second retardation region 212 at a wavelength of 550 nm may be 0 nm to 30 nm, specifically 0 nm to 10 nm, and more specifically 0 nm to 5 nm. In the above range, the reflectance may be low and the side color may have an excellent effect.

The first retardation region 211 may have an in-plane retardation Re of 110 nm to 170 nm, specifically 130 nm to 150 nm, and more specifically 140 nm to 148 nm at a wavelength of 550 nm. Within this range, the reflectance may be low and the effect of excellent color may be obtained.

The second retardation region 212 may have an in-plane retardation Re of 110 nm to 170 nm, specifically 130 nm to 150 nm, and more specifically 140 nm to 148 nm at a wavelength of 550 nm. Within this range, the reflectance may be low and the effect of excellent color may be obtained.

The patterned retardation layer 210 may have an in-plane retardation Re of 110 nm to 170 nm, specifically 130 nm to 150 nm, and more specifically 140 nm to 148 nm at a wavelength of 550 nm. Within the above range, it is possible to improve reflectance and color values on the side.

The patterned retardation layer 210 may have a thickness direction retardation Rth of -150 nm to 150 nm, specifically -120 nm to 120 nm, more specifically -90 nm to 90 nm, and most specifically 0 nm to 90 nm at a wavelength of 550 nm. Within the above range, it is possible to improve reflectance and color values on the side.

The patterned retardation layer 210 may have a degree of biaxiality NZ of -2 to 2, specifically -1.5 to 1.5, more specifically -1.2 to 1.2, and most specifically 0 to 1.2 at a wavelength of 550 nm. Within the above range, it is possible to improve reflectance and color values on the side.

In the patterned retardation layer, the above-described in-plane retardation and thickness-direction retardation may be implemented by adjusting the coating thickness of the liquid crystal composition described in detail below. The above-described degree of biaxiality of the patterned retardation layer may be implemented by adjusting the type of liquid crystal, liquid crystal content, and the like in the liquid crystal composition described in detail below.

In one embodiment, the patterned retardation layer 210 is reverse wavelength dispersive.

The pattern retardation layer 210 may further improve reflectance and color values on the side by being reverse wavelength dispersed. In the patterned retardation layer 210 , 0<Re(450)/Re(550)<1 and Re(650)/Re(550)>1 may be satisfied. For example, the patterned retardation layer 210 has Re(450)/Re(550) of 0.7 or more and less than 1, specifically 0.75 to 0.95, and Re(650)/Re(550) of more than 1 and 1.5 or less, specifically 1.01. to 1.3. Within the above range, reflectance and color values on the side surface may be further improved. The "Re(450)", "Re(550)", and "Re(650)" mean in-plane retardation at wavelengths of 450 nm, 550 nm, and 650 nm, respectively, of the retardation layer.

In one embodiment, Re(450) may be 90 nm to 140 nm, specifically 110 nm to 135 nm, and Re (650) may be 140 nm to 190 nm, specifically 140 nm to 165 nm. In the above range, there may be an effect of low frontal reflectance.

The aforementioned reverse wavelength dispersion may be controlled by the composition of raw materials and process conditions when forming the patterned retardation layer.

The patterned retardation layer 210 may be a film formed of an optically transparent resin. However, in order to simplify the manufacturing process of the patterned retardation layer 210 and reduce the thickness, the patterned retardation layer 210 may be a liquid crystal coating layer or a liquid crystal film.

The liquid crystal coating layer or the liquid crystal film may further include an alignment layer in the pattern retardation layer 210 to implement the above-described retardation.

Referring to FIG. 3 , a method of manufacturing the patterned retardation layer 210 will be described.

Referring to FIG. 3 , a coating film 1 for a photo-alignment layer is formed on one side of the release film by coating a composition for a photo-alignment layer to a predetermined thickness on one side of the release film and drying and/or curing the composition.

By placing a wire grid polarizer (WGP) in one direction on the photo-alignment layer coating film 1 and irradiating UV light, the alignment of the photo-alignment compound in the photo-alignment layer coating film was fixed in one direction. Through this, it is possible to form a first slow axis to form a first retardation region. At this time, the formation of the first slow axis can be facilitated by disposing the mask pattern 5 having a predetermined interval between the photo-alignment layer and the WGP. The interval of the mask pattern may be greater than 0 μm and less than or equal to 1000 μm, preferably 10 μm to 800 μm, and more preferably 20 μm to 500 μm. Within the above range, it is possible to prevent the pattern of the first retardation area and the second retardation area from being visually recognized in the light emitting device display device.

Then, a mask pattern 10 having a predetermined distance is placed on the photo-alignment layer, a wire grid polarizer (WGP) is rotated in a predetermined direction, and UV is irradiated to form a second slow axis intersecting the first slow axis. . The spacing of the mask pattern may be greater than 0 μm and less than or equal to 1000 μm, preferably 10 μm to 800 μm, and more preferably 80 μm to 500 μm. Within this range, it is possible to prevent the pattern of the first retardation area and the second retardation area from being visually recognized in the light emitting device display device.

A patterned retardation layer may be formed by coating a liquid crystal composition to a predetermined thickness on the photo-alignment layer on which the first slow axis and the second slow axis are formed and curing the liquid crystal composition. The liquid crystal composition may include a conventional liquid crystal known to those skilled in the art.

In one embodiment, the first retardation region of the patterned retardation layer has a maximum width of greater than 0 μm and less than or equal to 1000 μm, preferably 10 μm to 800 μm, more preferably 20 μm to 500 μm, and the second retardation region has a maximum width of 0 It may be greater than 1000 μm, preferably 10 μm to 800 μm, and more preferably 20 μm to 500 μm. Within this range, it is possible to prevent the pattern of the first retardation area and the second retardation area from being visually recognized in the light emitting device display device.

The patterned retardation layer 210 may be directly formed on the polarizing film 220 . The "directly formed" means that no adhesive layer, adhesive layer, or adhesive layer is formed between the patterned retardation layer 210 and the polarizing film 220 .

In one embodiment, an alignment layer may be formed between the polarizing film and the pattern retardation layer, that is, on the upper surface of the pattern retardation layer.

In another embodiment, an alignment layer may be formed on the lower surface of the patterned retardation layer.

Although not shown in FIG. 1 , the patterned retardation layer 210 may be laminated on the polarizing film 220 or the light emitting device panel 100 using an adhesive layer, an adhesive layer, or an adhesive layer. In one embodiment, the light emitting device display device includes an adhesive layer, an adhesive layer, or an adhesive layer from the light emitting device panel 100; pattern retardation layer; An adhesive layer, an adhesive layer or an adhesive layer; It may be laminated in the order of polarizing films.

Also, although not shown in FIG. 1 , the patterned retardation layer 210 may be laminated on the polarizing film 220 using an adhesive layer, an adhesive layer, or an adhesive layer. In one embodiment, the light emitting device display device includes an adhesive layer, an adhesive layer, or an adhesive layer from the light emitting device panel 100; pattern retardation layer; It may be laminated in the order of polarizing films.

The polarizing film 220 may include a polyvinyl alcohol-based polarizer manufactured by uniaxially stretching a polyvinyl alcohol-based film or a polyene-based polarizer manufactured by dehydrating a polyvinyl alcohol-based film. The polarizing film 220 may have a thickness of 5 μm to 40 μm, preferably 5 μm to 30 μm. Within this range, it can be used for a polarizing plate.

The polarizing film 220 may have light transmittance of 40% or more, preferably 42% to 50%. Within the above range, the light transparency of the polarizing plate may be improved.

Although not shown in FIG. 1 , a protective layer may be further formed on the upper surface of the polarizing film 220 . The protective layer may protect the polarizing film 220 from an external environment. The protective layer may be a protective film made of an optically transparent resin or an optically transparent protective coating layer. The protective film includes, for example, polycarbonate-based resin, cyclic olefin polymer (COP) resin, modified polycarbonate-based resin, isosorbide-based resin, cellulose-based resin including triacetyl cellulose-based resin, fluorene-based resin, It may be a polymer film formed of one or more of polyester resins.

The light emitting device panel 100 includes a panel for a typical display device having a self light emitting device. The self-light emitting device may include at least one of an organic light emitting device, an inorganic light emitting device, and a quantum dot light emitting device, but is not limited thereto.

Hereinafter, the configuration and operation of the present invention will be described in more detail through preferred embodiments of the present invention. However, the following examples are provided to aid understanding of the present invention, and the scope of the present invention is not limited to the following examples.

Example One

A polarizing film (thickness: 12 μm) was prepared by stretching the polyvinyl alcohol film 3 times at 60° C., adsorbing iodine, and then stretching the polyvinyl alcohol film 2.5 times in an aqueous solution of boric acid at 40° C.

A light alignment layer composition (HSPA-141, NCK Co., Ltd.) was coated on one surface of the release film to a predetermined thickness and dried at 110° C. for 1 minute to form a coating film having a thickness of 500 μm. By placing a wire grid polarizer on the coating layer and irradiating ultraviolet rays using a UV lamp, the alignment direction of the alignment molecules in the photo-alignment layer was fixed in one direction, thereby forming a slow axis of the first phase difference region. The slow axis of the first retardation region was set to be 45° with respect to the horizontal direction of the release film.

Then, a mask pattern with an interval of 500 μm was placed on the coating film and the wire grid polarizer was changed to 90° to form the slow axis of the second retardation area to be 90° relative to the slow axis of the first retardation area.

A photo-alignment layer composition is coated on one surface of the release film to a predetermined thickness and then dried and/or cured to form a photo-alignment layer on one surface of the release film. The alignment of the photo-alignment compound in the photo-alignment layer was fixed in one direction by placing a wire grid polarizer on the photo-alignment layer in one direction and irradiating UV light. Through this, a first slow axis in one direction is formed on the photo-alignment layer. A mask pattern having an interval of 500 μm is placed on the photo-alignment layer, the wire grid polarizer is turned in a predetermined direction, and UV is irradiated to form a second slow axis crossing the first slow axis. A retardation layer may be formed by coating an optical alignment liquid crystal composition (Merck Co., Ltd., RMM1640) to a predetermined thickness on the photo-alignment layer on which the first slow axis and the second slow axis are formed and curing the photo-alignment layer.

Example 2 to Example 3

In Example 1, a patterned retardation layer and a polarizing plate were manufactured in the same manner as in Example 1, except that the coating thickness of the light-alignable liquid crystal composition was changed.

comparative example One

In Example 1, a patterned retardation layer and a polarizing plate were manufactured in the same manner as in Example 1, except that only the first retardation region was formed.

comparative example 2

In Example 1, a patterned retardation layer and a polarizing plate were manufactured in the same manner as in Example 1, except that the patterned retardation layer was changed to have a constant wavelength dispersion using a constant wavelength liquid crystal.

comparative example 3

In Example 1, a patterned retardation layer and a polarizing plate were manufactured in the same manner as in Example 1, except that the patterned retardation layer was changed to have a constant wavelength dispersion using a constant wavelength liquid crystal.

The specific specifications of the patterned retardation layer and the polarizing plate in Examples and Comparative Examples are shown in Table 1 below. With respect to the prepared polarizer, reflectance at a side angle θ=5° and color change Δa*b* at a side angle θ=60° were measured without a positive C plate. The results are shown in Table 1 and FIG. 4 below.

Specifically, reflectance and color change Δa*b were measured using DMS (Instrument Systems).

Example comparative example One 2 3 One 2 3 Re(450)/
Re(550) 0.87 0.88 0.87 1.09 1.10 1.09 Re(650)/
Re(550) 1.021 1.020 1.022 0.95 0.96 0.95 Re(nm) 142 130 150 140 105 143 Rth(nm) 74 68 78 73 55 75 NZ 1.02 1.02 1.02 1.02 1.02 1.02 Θp-θr1 +45° +45° +45° +45° +45° +45° Θp-θr2 -45° -45° -45° - -45° -45° reflectivity(%) 0.35 0.4 0.42 0.37 0.51 0.55 Δa*b* 1.23 3.01 2.24 5.11 3.72 4.79

*In Table 1, Re, Rth, and NZ are the retardation values of the patterned retardation layer at a wavelength of 550 nm, respectively.

*In Table 1, Θp-θr1 is the angle between the absorption axis (θp) of the polarizing film and the slow axis (θr1) of the first retardation region

*In Table 1, Θp-θr2 is the angle between the absorption axis (θp) of the polarizing film and the slow axis (θr2) of the second retardation region

As shown in Table 1 and FIG. 4, the light emitting device display device of the present invention had low reflectance from the front and low color change from the side without the positive C plate. On the other hand, Comparative Example 1 including the retardation layer without the second retardation region showed high color change on the side surface. In addition, Comparative Example 2 and Comparative Example 3 provided with the positive wavelength dispersive pattern retardation layer also had high reflectance on the side surface.

Simple modifications or changes of the present invention can be easily performed by those skilled in the art, and all such modifications or changes can be considered to be included in the scope of the present invention.

Claims (10)

A light emitting device panel and a polarizing plate formed on an upper surface of the light emitting device panel,
The polarizing plate includes a polarizing film and a patterned retardation layer formed on a lower surface of the polarizing film,
The patterned retardation layer is a single layer and includes first retardation regions and second retardation regions alternately formed within the single layer,
The first phase difference region and the second phase difference region have different slow axis directions;
The pattern retardation layer is a reverse wavelength dispersion retardation layer,
The patterned retardation layer has a thickness direction retardation Rth of -150 nm to 150 nm at a wavelength of 550 nm,
The patterned retardation layer has a biaxial degree NZ of -2 to 2 at a wavelength of 550 nm,
The pattern retardation layer has an in-plane retardation Re of 110 to 170 nm at a wavelength of 550 nm, a light emitting device display device.
The method of claim 1, wherein Re (450) / Re (550) is greater than or equal to 0.7 and less than 1, and Re (650) / Re (550) is greater than 1 and less than or equal to 1.5, wherein Re (450), Re ( 550), Re (650) is the in-plane retardation of the pattern retardation layer at wavelengths of 450 nm, 550 nm, and 650 nm.
3 . The light emitting device display device according to claim 2 , wherein Re(450) ranges from 90 nm to 140 nm, Re(550) ranges from 110 nm to 170 nm, and Re(650) ranges from 140 nm to 190 nm.
delete delete The method of claim 1 , wherein when an absorption axis of the polarizing film is 0°, an angle formed by the first slow axis of the first retardation region is +35° to +55°, and the second slow axis of the second retardation region The angle formed by this will be -35 ° to -55 °, the light emitting element display device.
The light emitting device display device of claim 1 , wherein the maximum width of the first retardation region is greater than 0 μm and less than or equal to 1000 μm, and the maximum width of the second retardation region is greater than 0 μm and less than or equal to 1000 μm.
The light emitting device display device according to claim 1, wherein an adhesive layer, an adhesive layer, or an adhesive layer is directly formed on an upper surface or a lower surface of the pattern retardation layer.
The light emitting device display device according to claim 1, wherein the light emitting device display device does not include a positive C plate.
The light emitting device display device according to claim 1 , wherein a protective layer is further formed on an upper surface of the polarizing film.

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