KR20130038493A - Display device and method of fabricating the same - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a method for manufacturing the same, and includes a light path changing layer having a guiding pattern formed therein for reducing occurrence of three-dimensional crosstalk and improving two-dimensional front luminance.

Description

DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a method of manufacturing the same, and more particularly, to a display device and a method of manufacturing the same, which reduce occurrence of three-dimensional crosstalk and improve two-dimensional front luminance by using an optical path changing layer having a guiding pattern. It is about.

As the information society has developed in recent years, the demand for the display field has been increasing in various forms, and a display device capable of realizing not only a two-dimensional plane image but also a three-dimensional stereoscopic image with respect to an image realization method has been developed.

In addition to the binocular disparity due to the distance between the two eyes, there are psychological and memorizing factors for the depth and stereoscopic effect of the human image.

One of the three-dimensional stereoscopic image display methods using these factors is a stereoscopic type in which stereoscopic effect is felt using physiological factors of both eyes.

The stereoscopic type is the ability to generate the spatial information before and after the display surface in the process of fusion of the brain by providing the plane image with the parallax information in the left and right, That is, stereography is used.

Such a stereoscopic expression system is classified into a spectacle system in which a viewer wears special glasses depending on a substantial stereoscopic generation position and a non-stereoscopic vision system in which a lens array such as a parallax barrier or a lenticular on the display side is used, . ≪ / RTI >

Among these glasses, the viewing angle is wider than that of the non-glasses type, and it is less prone to dizziness and can be manufactured at a relatively low cost.

The glasses method as described above may be divided into shutter glasses and polarization splitting.

The shutter glasses system alternately displays the left and right images with a single screen, and sequentially opens and closes the timing of the left shutter and the right shutter of the shutter glasses in accordance with the temporal difference time of the left and right eye images, Thereby realizing a three-dimensional feeling.

Flicker phenomenon may occur when the shutter eyeglasses system is not controlled so as to perfectly match the temporal difference timings so that observers may experience fatigue such as dizziness when viewing stereoscopic images.

Another method, polarization splitting, divides pixels on one screen into columns, rows, or pixels to display left and right images in different polarization directions, and the left and right glasses of the polarizing glasses have different polarization directions. This is a method of representing a three-dimensional effect by allowing each image to be separately recognized by the left eye and the right eye.

The polarization splitting method has the advantage of less fatigue when watching because there is no cause of flicker like the shutter glasses method.

In addition, the polarization split display device is equipped with a patterned polarization splitting optical medium (for example, a patterned retarder) capable of dividing the polarization on the front of the display device, so that polarization is very inexpensive. Wearing glasses can be enjoyed by many, so the cost is relatively low.

Hereinafter, a conventional polarization split display device will be described with reference to the accompanying drawings.

1 is a diagram schematically illustrating a cross section of a display device, and FIG. 2 is a view referred to for explaining a path of light in a three-dimensional mode of a conventional display device.

As shown in FIG. 1, a conventional display device includes a patterned retarder 50, a protective film 60, and the like coated with a display panel (not shown) and a reactive monomer.

The display panel is formed by attaching the first substrate (not shown) and the second substrate 20 to display a stereoscopic image using a left eye image and a right eye image.

Gate lines (not shown), data lines (not shown), thin film transistors (not shown), and the like are formed on the first substrate.

The black matrix BM may be formed on the second substrate 20. As illustrated, the black matrix BM may be formed to be biased toward the left eye horizontal pixel line H1.

The black matrix BM serves to block the non-display area in the two-dimensional mode of the display device.

In addition, in the three-dimensional mode of the display device, the black stripe BS may be further formed along with the black matrix BM.

In addition, a plurality of left eye horizontal pixel lines H1 and a plurality of right eye horizontal pixel lines Hr may be defined in the second substrate 20.

A first polarizer (not shown) is attached to the lower portion of the first substrate, and a second polarizer 40 is attached to the upper portion of the second substrate 20.

At this time, the first polarizing plate (not shown) and the second polarizing plate 40 transmit only linearly polarized light parallel to the light transmission axis, and the light transmission axis of the first polarizing plate (not shown) and the light transmission axis of the second polarizing plate 40 It is arranged vertically.

The patterned retarder layer 50 is attached to the upper portion of the second polarizing plate 40 by the adhesive layer 52 and includes a plurality of left eye retarders Rl and a plurality of right eye retarders Rr.

The protective film 60 is positioned on the patterned retarder layer 50, and serves to protect the patterned retarder layer 50 and the second polarizing plate 40.

In the three-dimensional mode of the display device, the black matrix BM and the black stripe BS each have a plurality of left eye images displayed by the left eye horizontal pixel line Hl and the right eye horizontal pixel line Hr in the front direction (Z1 region). A part of Il and a plurality of right eye images Ir are prevented from being output to different retarders.

For example, in the black matrix BM, a part of the plurality of left eye images Il indicated by the left eye horizontal pixel line Hl in the front direction (Z1 region) is the right eye retarder Rr of the patterned retarder layer 50. Pass through) to prevent right polarization and output.

In addition, the black stripe BS may include the left eye retarder Rl of the patterned retarder layer 50 in a portion of the plurality of right eye images Ir displayed by the right eye horizontal pixel line Hr in the front direction (Z1 region). It passes through the left circle and prevents it from being output.

The black stripe BS is formed by blacking the lower subpixel area in the 3D mode of the display device.

As shown in FIG. 2, in the vertical viewing angle direction (Z2 area) of the conventional display device, a part of the plurality of left eye images Il displayed by the left eye horizontal pixel line H1 is different from the front direction (Z1 area). The right circularly polarized light passes through the right eye retarder Rr of the patterned retarder layer 50 and is output. (Il ')

A portion of the plurality of right eye images Ir displayed by the right eye horizontal pixel line Hr passes through the left eye retarder Rl of the patterned retarder layer 50, and is left polarized and output. (Ir ')

As described above, the left eye image Il 'of the right circularly polarized light may be transmitted to the observer's right eye through the right eye lens of the polarizing glasses (not shown) together with the right circularly polarized right eye image Ir.

The left circularly polarized part of the right eye image Ir 'may be transmitted to the observer's left eye along with the left circularly polarized left eye image Il through the left eye lens of the polarizing glasses.

Therefore, the 3D crosstalk is caused by the interference between the plurality of right eye images Ir and some of the left eye images Il 'or the interference of the plurality of left eye images Il and some of the right eye images Ir'. Occurs.

Here, the 3D crosstalk means that the 3D crosstalk interferes with a clear 3D stereoscopic image as the left eye Il is provided to the right eye or the right eye Ir is provided to the left eye.

Thus, there has been a problem in that the three-dimensional viewing angle characteristic in the vertical direction is lowered by the 3D crosstalk.

In addition, since the black stripe (BS) width and the vertical viewing angle are designed to match the viewing distance, there is a problem that 3D crosstalk may occur when the viewing distance approaches.

The present invention provides a display device and a method of manufacturing the same, including a light path changing layer having a guiding pattern for reducing the occurrence of three-dimensional crosstalk and improving two-dimensional front luminance. It aims to do it.

A display device for achieving the above object includes a display panel for displaying a stereoscopic image using the left eye image and the right eye image; An optical path changing layer formed on the display panel and including a plurality of guiding patterns for changing a path of the emission light emitted from the display panel; It is characterized in that it comprises a patterned retarder layer formed on the light path changing layer and consisting of a left eye retarder and a right eye retarder.

Here, a second polarizing plate for selectively transmitting light may be formed between the light path changing layer and the patterned retarder layer.

The display panel may include a plurality of pixel areas, and each pixel area may include a first subpixel area and a second subpixel area.

The display panel may be implemented in a 3D mode or a 2D mode by a mode control signal.

In this case, when the display panel is implemented in the 2D mode by the mode control signal, light may be emitted from the first subpixel area and the second subpixel area.

On the other hand, when the display panel is implemented in the 3D mode by the mode control signal, light may be emitted in the first subpixel area and light may be blocked in the second subpixel area.

On the other hand, the plurality of guiding patterns may have a shape consisting of a first inclined surface and a second inclined surface.

Here, the degree of refraction of the emitted light may increase as the acute angle formed between the surfaces of the plurality of guiding patterns and the first inclined surface increases.

The plurality of guiding patterns may have a structure in which the boundary lines of the left eye retarder and the right eye retarder are line-symmetric with respect to the axis of symmetry.

In addition, the optical path changing layer preferably has a refractive index larger than the refractive index of the plurality of guiding patterns.

According to an aspect of the present invention, there is provided a method of manufacturing a display device, including a plurality of guiding patterns on an upper portion of a display panel displaying a stereoscopic image using a left eye image and a right eye image. Forming a path change layer; And forming a patterned retarder layer on the light path changing layer.

The method of manufacturing a display device according to an exemplary embodiment of the present invention may further include forming first and second polarizing plates that selectively transmit light on each of the outer side surfaces of the display panel. The light path changing layer and the patterned retarder layer may be formed.

In this case, the display panel may include a plurality of pixel areas, and each pixel area may include a first subpixel area and a second subpixel area.

Here, the plurality of guiding patterns may be formed in a shape consisting of a first inclined surface and a second inclined surface.

The plurality of guiding patterns may be formed to linearly symmetric a boundary line between the left eye retarder and the right eye retarder with a symmetry axis.

As described above, in the display device according to the present invention, generation of three-dimensional crosstalk can be reduced by using an optical path changing layer having a guiding pattern.

As a result, the three-dimensional viewing angle and luminance of the display device can be improved.

In addition, the front luminance in the two-dimensional mode can be improved.

1 is a schematic cross-sectional view of a conventional display device.
FIG. 2 is a diagram referred to for describing a path of light in a three-dimensional mode of a conventional display device.
3 is a perspective view of a display device according to an exemplary embodiment of the present invention.
4 is a diagram for explaining a pixel area for each mode of a display device according to an exemplary embodiment of the present invention.
5 is a schematic cross-sectional view of a display device according to an exemplary embodiment of the present invention.
6 is a view referred to to explain the optical path changing layer according to the present invention.
7A and 7B are views referred to for describing a path of light in the two-dimensional mode of the display device according to an exemplary embodiment of the present invention.
FIG. 8 is a diagram referred to for describing a change in luminance in the two-dimensional mode of the display device according to an exemplary embodiment of the present invention.
FIG. 9 is a view referred to for explaining a path of light in the three-dimensional mode of the display device according to an exemplary embodiment of the present invention.
FIG. 10 is a diagram referred to for describing crosstalk variation in a 3D mode of a display device according to an exemplary embodiment of the present invention.
FIG. 11 is a diagram referred to for describing a change in luminance in the three-dimensional mode of the display device according to the exemplary embodiment of the present invention.
12 is a view referred to for explaining the relationship between the width of the black matrix, the width of the black stripe, and the reflection angle in the display device according to the embodiment of the present invention.

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

FIG. 3 is a perspective view of a display device according to an exemplary embodiment of the present invention, FIG. 4 is a view referred to describe a pixel area for each mode of the display device according to an exemplary embodiment of the present invention, and FIG. 5 is an exemplary embodiment of the present invention. FIG. 6 is a schematic cross-sectional view of a display device according to an embodiment of the present invention. FIG. 6 is a view referred to for explaining an optical path changing layer according to the present invention.

As shown in FIG. 3, the display device according to an exemplary embodiment of the present invention includes a display panel 130, a backlight unit (not shown), a patterned retarder 150, a protective film 160, and the like. It includes.

The display panel 130 is formed by bonding the first substrate (not shown) and the second substrate 120 which face each other and are spaced apart from each other, and display a stereoscopic image using the left eye image Il and the right eye image Ir. Play a role.

Gate lines (not shown), data lines (not shown), thin film transistors (not shown), and the like are formed on the first substrate (not shown).

The black matrix BM may be formed on the second substrate 120. As illustrated, the black matrix BM may be formed to be biased toward the left eye horizontal pixel line H1.

The black matrix BM serves to block non-display areas such as gate lines and data lines in the 2D and 3D modes of the display device.

In addition, in the three-dimensional mode of the display device, the black stripe BS may be further formed along with the black matrix BM.

The black matrix BM and the black stripe BS are formed by the left eye horizontal pixel line Hl and the right eye horizontal pixel line Hr respectively displayed in the front direction (Z1 region of FIG. 2) in the 3D mode of the display device. Some of the left eye Il and the plurality of right eye Ir are prevented from being output to different retarders.

For example, in the black matrix BM, a part of the plurality of left eye images Il indicated by the left eye horizontal pixel line Hl in the front direction (Z1 region of FIG. 2) is the right eye rita of the patterned retarder layer 150. Passes the Rr and prevents the right circularly polarized output.

In addition, the black stripe BS may include the left eye retarder Rl of the patterned retarder layer 150 in part of the plurality of right eye images Ir displayed by the right eye horizontal pixel line Hr in the front direction (Z1 region). It passes through the left circle and prevents it from being output.

In addition, a plurality of left eye horizontal pixel lines H1 and a plurality of right eye horizontal pixel lines Hr may be defined in the second substrate 120.

In this case, each of the left eye horizontal pixel line Hl and the right eye horizontal pixel line Hr is disposed with red, green, and blue subpixel areas R, G, and B sequentially, and the left eye horizontal pixel line Hl and the right eye horizontal pixel line Hl and horizontal The pixel lines Hr are alternately arranged along the vertical direction of the display panel 130.

Although not shown, the first substrate may include a gate wiring (not shown) and a data wiring (not shown) that cross each other to define the pixel region P1, and a thin film transistor (not shown) connected to the gate wiring and the data wiring. A pixel electrode (not shown) connected to the thin film transistor and disposed in each subpixel area may be formed.

As shown in FIG. 4, the pixel area P1 of the display device according to the present invention may be divided into an upper subpixel area SP1 and a lower subpixel area SP2.

In this case, the upper subpixel area SP1 and the lower subpixel area SP2 may be any one of red, green, and blue subpixel areas R, G, and B, respectively.

The upper subpixel area SP1 may be larger than the lower subpixel area SP2.

Meanwhile, the display panel 130 according to the present invention may be implemented in a 3D mode or a 2D mode by a mode control signal transmitted through a timing controller (not shown).

In this case, when the display panel 130 is implemented in the two-dimensional mode by the mode control signal, light may be emitted in the first subpixel area SP1 and the second subpixel area SP2.

That is, in the two-dimensional mode of the display device, the pixel area P1 may be driven by the same image data of the upper subpixel area SP1 and the lower subpixel area SP2.

On the other hand, when the display panel 130 is implemented in the 3D mode by the mode control signal, light is emitted in the first subpixel area SP1 and light is blocked in the second subpixel area SP2. Can be controlled.

That is, in the pixel region P2 in the 3D mode of the display device, the upper subpixel area SP1 is driven by the left eye image Il or the right eye image Ir, and the lower subpixel area SP2 is black. Can be processed to block light.

As described above, as the lower subpixel area SP2 is blackened in the 3D mode of the display device according to the present invention, the black stripe BS may be formed.

As a result, light is blocked in the region where the black matrix BM is formed in the two-dimensional mode, and the remaining region (including the region where the black stripe BS is to be formed) becomes an opening region so that light passes.

On the other hand, in the 3D mode, as the lower subpixel area SP2 is blacked, the light from the first substrate may be blocked, and the light is blocked from both the black matrix BM and the black stripe BS. do.

By applying such a pixel structure, the aperture ratio and the front luminance can be improved in the two-dimensional mode, and 3D crosstalk can be prevented in the three-dimensional mode.

As shown in FIGS. 5 and 6, an optical path changing layer composed of a plurality of guiding patterns 144 for changing the path of the outgoing light emitted from the display panel 130 on the display panel 130. 142 is being formed.

In this case, the guiding pattern 144 may have a structure in which the boundary lines of the left eye retarder Rl and the right eye retarder Rr are symmetric with respect to the axis of symmetry, for example, having a shape consisting of a first inclined plane and a second inclined plane. Can be.

As shown in FIG. 6, the cross section of the guiding pattern 144 may have a triangular shape having a height of l1 and a bottom of l2 * 2.

For example, l1 is 20 μm, l2 * 2 is 100 μm, and the acute angle α formed between the surface of the guiding pattern 144 and the first or second inclined surface may be 11.5 degrees.

The guiding pattern 144 may be formed by, for example, an inkjet printing method.

On the other hand, the light path changing layer 142 may have a refractive index larger than the refractive index of the guiding pattern 144.

For example, the refractive index of the light path changing layer 142 may be 1.8, and the refractive index of the guiding pattern 144 may be 1.5.

In this regard, referring to a method of manufacturing a display device according to an exemplary embodiment of the present invention, first, a soluble polymer, which is a material of the light path changing layer 142, is coated on the display panel 130, and inkjet printing is performed. The guiding pattern 144 is formed by a method or the like.

In addition, the second polarizing plate 140 may be attached to the light path changing layer 142 by using an adhesive resin.

In this case, the refractive index of the coated adhesive resin may have the same refractive index as that of the second substrate 120.

That is, the refractive index of the guiding pattern 144 may be 1.5 which is the same as the refractive index of the second substrate 120 as the refractive index of the adhesive resin.

A first polarizing plate (not shown) for selectively transmitting light is also formed under the display panel 130.

In this case, the first polarizing plate and the second polarizing plate 140 transmit only linear polarization parallel to the light transmission axis, and the light transmission axis of the first polarizing plate may be disposed perpendicular to the light transmission axis of the second polarizing plate 140.

Next, the patterned retarder layer 150 may be formed on the second polarizing plate 140.

Meanwhile, the light transmitted from the backlight unit (not shown) passes through the first polarizing plate, the display panel 130, and the second polarizing plate 140 to be linearly polarized to enter the patterned retarder layer 150.

Here, the patterned retarder layer 150 is attached to the upper portion of the second polarizing plate 140 by the adhesive layer 152 and includes a plurality of left eye retarders Rl and a plurality of right eye retarders Rr. .

The patterned retarder layer 150 includes a left eye retarder Rl and a right eye retarder Rr, and the left eye retarder Rl and the right eye retarder Rr respectively include a left eye horizontal pixel of the display panel 130. It is alternately arranged to correspond to the line Hl and the right eye horizontal pixel line Hr.

The left eye image Il and the right eye image Ir emitted from the display panel 130 are modulated into a linearly polarized left eye image Il and a linearly polarized right eye image Ir passing through the second polarizer 140, respectively. The linearly polarized left eye image Il and right eye image Ir are incident on the patterned retarder layer 150.

Here, the linearly polarized left eye image Il and the linearly polarized right eye image Ir, which are modulated through the second polarizing plate 140, are circularly polarized as they pass through the patterned retarder layer 150.

In this case, the patterned retarder layer 150 may change the polarization states of the left-eye image Il and the right-eye image Ir passed through the second polarizing plate 140 for each line.

In other words, the left eye image Il passing through the left eye horizontal pixel line H1 of the display panel 130 is linearly polarized while passing through the second polarizing plate 140, and then the left eye retarder (of the patterned retarder layer 150). Left circularly polarized light is output while passing through Rl).

The right eye image Ir passing through the right eye horizontal pixel line Hr of the display panel 130 is linearly polarized while passing through the second polarizing plate 140, and then the right eye retarder Rr of the patterned retarder layer 150. Right circularly polarized light is output.

The left circularly polarized left eye Il and the right circularly polarized right eye Ir are output to the viewer.

On the other hand, the polarized eyeglasses 170 worn by the observer includes a left eye lens 172 and a right eye lens 174, wherein the left eye lens 172 transmits only the left circularly polarized light, and the right eye lens 174 is the right circularly polarized light. Only permeate.

Accordingly, among the images transmitted to the observer, the left circularly polarized left eye image Il is transmitted to the left eye of the observer through the left eye lens 172, and the right circularly polarized right eye image Ir is transmitted to the observer through the right eye lens 174. Delivered to the right eye

As a result, the observer recognizes the stereoscopic image by combining the left eye image Il and the right eye image Ir delivered to the left and right eyes, respectively.

The patterned retarder layer 150 used as the polarization split optical medium as described above is disposed on the front surface of the display device, and the left eye image Il and the right eye image Ir emitted from the display panel 130 have different polarization directions. It modulates to have.

The protective film 160 is positioned on the patterned retarder layer 150 and serves to protect the patterned retarder layer 150 and the second polarizing plate 140.

7A and 7B are views referred to for explaining a light path in a two-dimensional mode of a display device according to an exemplary embodiment of the present invention, and FIG. 8 is a luminance in the two-dimensional mode of a display device according to an exemplary embodiment of the present invention. It is a drawing referred to to explain the change.

As shown in FIGS. 7A and 7B, light passing through the right eye horizontal pixel line Hr may be refracted and exit in the front direction when passing through the light path changing layer 142 and the guiding pattern 144. .

In more detail, when the light passing through the second substrate 120 having a refractive index of 1.5 is incident on the light path changing layer 142 having a refractive index of 1.8, the refractive angle is refracted to be r1.

Then, the light incident on the light path changing layer 142 is incident to the guiding pattern 144 such that the incident angle is i2 again, and is refracted so that the refractive angle is r2.

At this time, i1 > r1 and i2 < r2 by Snell's law.

Therefore, the light passing through the right eye horizontal pixel line Hr is refracted by the light path changing layer 142 and the guiding pattern 144 and is emitted in the front direction.

As a result, as shown in FIG. 8, it can be seen that the two-dimensional luminance (solid line) of the display device of the present invention is improved by 30 nits in the front direction compared with the two-dimensional luminance (dotted line) of the conventional display device.

In other words, the light passing through the right eye horizontal pixel line Hr of the display panel 130 is refracted by the light path changing layer 142 and the guiding pattern 144 to increase the amount of light emitted in the front direction. In the dimensional mode, the brightness in the front direction may be improved by about 11% compared to the conventional art.

FIG. 9 is a diagram for explaining a path of light in a three-dimensional mode of a display device according to an exemplary embodiment of the present invention, and FIG. 10 is a cross-talk change in the three-dimensional mode of a display device according to an exemplary embodiment of the present invention. 11 is a diagram referred to describe a luminance change in a three-dimensional mode of a display device according to an exemplary embodiment of the present invention.

As shown in FIG. 9, in the 3D mode of the display device according to the present invention, the right eye image passing through the right eye horizontal pixel line Hr toward the left eye retarder Rl may be refracted in the front direction and output.

In the conventional display device, the right eye image Ir 'which has passed through the right eye horizontal pixel line Hr and is directed to the left eye retarder Rl has been left polarized and output.

As described above, in the conventional display device, a part of the left circularly polarized right eye image Ir 'passes through the right eye lens 174 of the polarizing glasses 170 together with a plurality of the left circularly polarized eye images Ir. It was transmitted, causing three-dimensional crosstalk.

However, in the display device according to the present invention, the right eye image Ir, which has passed through the right eye horizontal pixel line Hr and is directed to the left eye retarder Rl, is refracted by the light path changing layer 142 and the guiding pattern 144. It is polarized right and exits.

That is, in the display device according to the present invention, since the right eye image Ir is refracted by the light path changing layer 142 and the guiding pattern 144, it may be prevented from being incident on different retarders.

Similarly, the left eye image Il 'passing through the left eye horizontal pixel line Hl toward the right eye retarder Rr was polarized and outputted right in the conventional case.

However, in the display device according to the present invention, the left eye image Il is refracted by the light path changing layer 142 and the guiding pattern 144 to be left circularly polarized and emitted.

Thus, by applying the optical path changing layer 142 having the guiding pattern 144 according to the present invention, it is possible to reduce the generation of three-dimensional crosstalk, and to improve the three-dimensional viewing angle and 3D luminance in the front direction.

As shown in Fig. 10, it can be seen that the angle (solid line) in which three-dimensional crosstalk occurs in the display device of the present invention is improved compared to the angle (dotted line) in which three-dimensional crosstalk occurs in the conventional display device. .

As shown in Fig. 11, it can be seen that the three-dimensional luminance (solid line) of the display device of the present invention is improved in the front direction compared with the three-dimensional luminance (dotted line) of the conventional display device.

In more detail, the light passing through the left eye horizontal pixel line H1 of the display panel 130 is refracted by the guiding pattern 144 to be focused in the front direction, and passes through the right eye horizontal pixel line Hr. Light may also be refracted by the guiding pattern 144 to be focused in the front direction.

Thus, the Full With at Half Maxmum (F2) of the present invention increases in size as the width thereof becomes narrower as compared with the conventional half-width (R2) as the luminance maximum of the present invention increases.

That is, in the display device according to the present invention, the output light of the display panel 130 may be focused in the front direction by applying the protective film 160 having the guiding pattern 144 to increase the three-dimensional brightness in the front direction. have.

12 is a view referred to for explaining the relationship between the width of the black matrix, the width of the black stripe, and the reflection angle in the display device according to the embodiment of the present invention.

As shown in FIG. 12, as the acute angle α formed between the surface of the guiding pattern 144 and the first inclined surface or the second inclined surface increases, the refractive angle of the outgoing light of the protective film 160 increases.

The width of the black matrix BM and the width of the black stripe BS may be determined using the relationship between the angle α and the refraction angle.

For example, when α = 1 and the width of the black matrix BM and the width of the black stripe BS are 100, the angle of refraction is about 8 degrees.

Therefore, in order to increase the refractive angle, it is necessary to increase the inclination of the inclined surface of the guiding pattern 144 by increasing the angle α, or increase the width of the black matrix BM and the width of the black stripe BS.

At this time, while increasing the width of the black matrix (BM) and the black stripe (BS) can prevent the generation of 3D crosstalk, while the aperture ratio can be reduced, it is preferable to adjust the angle α.

The embodiments of the present invention as described above are merely illustrative, and those skilled in the art can make modifications without departing from the gist of the present invention. Accordingly, the protection scope of the present invention includes modifications of the present invention within the scope of the appended claims and equivalents thereof.

120: second substrate 130: display panel
140: second polarizer 142: optical path changing layer
144: guiding pattern 150: patterned retarder layer
152: adhesive layer 160: protective film

Claims (15)

A display panel which displays a stereoscopic image using the left eye image and the right eye image;
An optical path changing layer formed on the display panel and including a plurality of guiding patterns for changing a path of the emission light emitted from the display panel;
A patterned retarder layer formed on the optical path changing layer and composed of a left eye retarder and a right eye retarder.
Display device comprising a.
The method of claim 1,
And a second polarizing plate for selectively transmitting light between the light path changing layer and the patterned retarder layer.
The method of claim 1,
The display panel includes a plurality of pixel areas, each pixel area including a first subpixel area and a second subpixel area.
The method of claim 3,
And the display panel is implemented in a 3D mode or a 2D mode by a mode control signal.
5. The method of claim 4,
When the display panel is implemented in the two-dimensional mode by the mode control signal,
And light is emitted from the first subpixel area and the second subpixel area.
5. The method of claim 4,
When the display panel is implemented in the 3D mode by the mode control signal,
And light is emitted in the first subpixel area, and light is blocked in the second subpixel area.
The method of claim 1,
And the plurality of guiding patterns has a shape consisting of a first inclined surface and a second inclined surface.
The method of claim 7, wherein
And as the acute angle between the surfaces of the plurality of guiding patterns and the first inclined surface increases, the degree of refraction of the emitted light increases.
The method of claim 1,
And the plurality of guiding patterns have a structure in which the boundary lines of the left eye retarder and the right eye retarder are line-symmetric with respect to the axis of symmetry.
The method of claim 1,
And the optical path changing layer has a refractive index greater than that of the plurality of guiding patterns.
Forming an optical path changing layer including a plurality of guiding patterns on the display panel displaying a stereoscopic image by using a left eye image and a right eye image;
Forming a patterned retarder layer on the light path changing layer
Method of manufacturing a display device comprising a.
The method of claim 11,
And forming first and second polarizing plates on each of the outer side surfaces of the display panel to selectively transmit light.
And the second polarizing plate is formed between the light path changing layer and the patterned retarder layer.
The method of claim 11,
The display panel includes a plurality of pixel areas, each pixel area including a first subpixel area and a second subpixel area.
The method of claim 11,
The plurality of guiding patterns are formed in a shape consisting of a first inclined surface and a second inclined surface.
The method of claim 11,
And the plurality of guiding patterns are formed such that the boundary lines of the left eye retarder and the right eye retarder are line-symmetric with respect to the axis of symmetry.

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