KR101879717B1 - 3 dimensional stereography image displayable device - Google Patents

Abstract

The present invention provides a liquid crystal display comprising a liquid crystal panel, a liquid crystal display including first and second polarizing plates formed on both outer sides of the liquid crystal panel, the first and second polarizing plates having transmission axes perpendicular to each other; A phase modulation layer provided on the outer surface of the second polarizer plate and alternately provided with a stripe-like lambda / 2 phase modulation pattern and a transparent material pattern; and a phase modulation layer provided on the outer surface of the partial phase modulation layer, A patterned retarder including a front phase modulation layer; Polarized glasses for selectively transmitting or blocking the light according to the state of light emitted through the patterned retarder
And a 3D image display device.

Description

[0001] The present invention relates to a stereoscopic image display device,

The present invention relates to a 3D image display device, and more particularly, to a 3D image display device capable of enhancing a vertical viewing angle for viewing a 3D image, suppressing a crosstalk phenomenon of a 3D image, and further improving luminance characteristics without lowering an aperture ratio .

2. Description of the Related Art In recent years, a display device capable of displaying a 3D image in response to an increase in demands of users for a display device capable of realizing a stereoscopic and more realistic image, that is, a 3D image display device, has been developed.

In general, 3D images are made by the principle of stereoscopic vision through two eyes. By using the binocular disparity that appears because the time difference of the two eyes, that is, the two eyes is about 65 mm apart, A display device has been proposed.

In a more detailed description of the 3D image implementation, the left and right eyes viewing the display device see different two-dimensional images, respectively. When these two images are transmitted to the brain through the retina, the brain fuses them exactly with each other, The depth and the sense of reality of the image are reproduced. Such a phenomenon is usually referred to as stereography.

Technologies proposed for displaying a 3D stereoscopic image in a device having a 2D image display screen such as a liquid crystal display device include a stereoscopic image display by special glasses, a non-stereoscopic stereoscopic image display, and a holographic display method.

In the stereoscopic image display system using the special glasses, the polarizing glasses system using the vibration direction or the rotation direction of the polarized light, the time division spectacle system alternately presenting the right and left images while switching them, and the light of different brightness in the left / Which is the method of concentration difference.

In the non-eye-hardened stereoscopic image display system, a parallax barrier system in which an image can be separated and observed through a vertical grid-like aperture in front of each image corresponding to the left / right eye, A lenticular method using a lenticular plate in which a cylindrical lens is arranged in a stripe manner, and an integral photography method using a fly-eye lens plate.

Among them, a 3D image display device using polarizing glasses is the most widely used.

1 is a view showing a 3D image display apparatus using conventional polarizing glasses.

As shown in the figure, a 3D image realization system using conventional polarizing glasses includes a liquid crystal display device 10 for displaying an image, a lambda / 4 pattern drier 40 and a spectacle 45 that selectively transmits light that has passed through the λ / 4 pattern drifter 40 from the liquid crystal display device 10.

First, the liquid crystal display device 10 includes an array substrate 15, a color filter substrate 20, a liquid crystal layer (not shown) interposed between the two substrates 15 and 20, (Not shown), and a backlight unit (not shown) on the outer surface of the first polarizer 25 (not shown) attached to the respective outer surfaces of the first and second polarizers 25 and 30. At this time, the first and second polarizing plates 25 and 30 are configured such that their transmission axes cross each other at right angles.

On the other hand, the? / 4 pattern reliader 40 provided on the outer surface of the second polarizer 30 attached to the outer surface of the color filter substrate 20 has a phase difference of? / 4 with respect to the incident light The birefringent materials that change their phases internally are patterned so as to have alternate directions in the pixel region P line by line so that the first and second polarization modulation patterns (A1, A2) are alternately formed

Accordingly, the λ / 4 pattern drifts 40 are shifted from the pixel regions P corresponding to the pixel regions P located in the odd-numbered pixel lines OL in the horizontal direction of the liquid crystal display device, The light emitted through the polarizing plate 30 passes through the first polarization modulation pattern A1 and becomes the right circularly polarized light state and corresponds to the pixel region P located in the even-numbered pixel line EL, And enters the left-handed circular polarization state through the modulation pattern A2.

The optical axes of the first and second polarization modulation patterns A1 and A2 in the λ / 4 pattern drifter 40 for causing the phase difference of λ / +45 degrees and -45 degrees with respect to the transmission axis of the second polarizer 30, respectively.

Therefore, according to the structure of the above-described conventional 3D video display device 1, the liquid crystal display device 10 is arranged in the odd-numbered pixel line OL after passing through the? / 4 pattern drifter 40 Light in a right circularly polarized state is emitted from the pixel region P located in the even-numbered pixel region EL and light in the left-circularly polarized state is emitted from the pixel region P located in the even-numbered pixel line EL.

At this time, with respect to the pixel region P located in the odd-numbered pixel line OL in the liquid crystal display device 10, the left-eye image signal incident on the left eye of the user is positioned in the even-numbered pixel line EL And a right eye image signal input to the right eye is applied to the pixel region P, thereby forming a display device capable of realizing a 3D image.

On the other hand, the polarizing glasses 45 for 3D image viewing constituting one set of the liquid crystal display 10 including the lambda / 4 pattern drifter 40 having the above-described configuration are made of a transparent glass material Polarizing films 45a and 45b and a? / 4 retardation film (not shown) are attached to the lens.

At this time, in the left eye lens (not shown) corresponding to the left eye of the user when the spectacles are worn, a lambda / 4 phase film 45a serving as a linearly polarized light and a first polarizing film (not shown) And a polarizing film (not shown) and a? / 4 phase film (not shown) functioning to selectively convert circularly polarized light into linearly polarized light are attached to the right eye lens 45b.

Therefore, when the user wears the 3D image glasses 45 having such a configuration and displays images having different circularly polarized light states applied to the left and right eye image data alternately for the pixel lines OL and EL When viewing an image through the liquid crystal display 10, the left eye image is input through the left eye lens 45a and the right eye image is input via the right eye lens 45b. By combining these two images The user can view the 3D image.

FIG. 2 is a cross-sectional view of a part of a conventional 3D image display apparatus, showing the progress of polarizing glasses and light.

As shown in the figure, the conventional 3D image display device 1 having the above-described configuration is configured such that the? / 4 pattern derraser 40 has the right-handed circular polarization state And a second polarization modulation area A2 for generating a left-handed circularly polarized light state are alternated so that a viewing angle range in which a 3D image can be viewed up and down on the basis of the front face of the liquid crystal display device 10 Vertical crosstalk due to the mixing of the left eye image and the right eye image occurs and the quality of the 3D image display is deteriorated.

That is, as shown in the figure, the left eye image signal from the odd-numbered pixel line OL of the liquid crystal display 10 is input to the first polarization modulation area A1 is incident on the second polarized light modulating region A2 without being incident on the first polarized light modulating region A2, and thus the right circularly polarized light enters the right eye lens 45b of the polarized glasses, There is a problem that the quality of 3D image display due to mixing of left and right images is lowered.

In order to solve such a problem, the black matrix 21 is provided at the boundary between each pixel region (OL, EL) of the liquid crystal display device 10 and more precisely between the pixel regions P, thereby preventing image blurring. When the width of the black matrix 21 is increased, the aperture ratio is lowered, and the occurrence of the vertical vertical crosstalk through the width of the black matrix 21 is limited.

Alternatively, the width of the black matrix 21 may not be increased, but the first polarization modulation area A1 and the second polarization modulation area A2 for generating the left-handed circularly polarized light and right-handed circularly polarized light for the patterned layer 40 4 pattern deliters 40 are provided to enhance the 3D image display quality by increasing the vertical viewing angle by increasing the upper and lower viewing angles to suppress vertical crosstalk. The aperture ratio is lowered due to the black stripe (not shown) provided on the substrate.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a 3D image display device capable of viewing a 3D image without lowering an aperture ratio and further improving a vertical angle of view to suppress 3D vertical crosstalk, The purpose.

According to an aspect of the present invention, there is provided a 3D image display apparatus including a liquid crystal panel, a liquid crystal panel including first and second polarizing plates formed on both outer sides of the liquid crystal panel, A display device; A phase modulation layer provided on the outer surface of the second polarizer plate and alternately provided with a stripe-like lambda / 2 phase modulation pattern and a transparent material pattern; and a phase modulation layer provided on the outer surface of the partial phase modulation layer, A patterned retarder including a front phase modulation layer; And polarizing glasses selectively transmitting or blocking the light according to the state of light emitted through the patterned retarder.

At this time, the? / 2 phase modulation pattern is formed corresponding to an area corresponding to a selected pixel line among odd-numbered or even-numbered pixel lines of the liquid crystal panel, and the transparent material And the optical axis of the? / 2 phase modulation pattern has a difference of +45 degrees or -45 degrees from the transmission axis of the second polarizer.

The polarizing glasses are provided with left and right eye lenses each including a lambda / 4 phase film and a polarizing film, and the lambda / 4 phase film provided in each of the left eye lens and the right eye lens, And the polarizing film provided on each of the left and right eye lenses has a transmission axis perpendicular to each other in the left and right eye lenses.

A backlight unit is provided on the outer surface of the first polarizer.

The liquid crystal panel may include a first substrate having a gate wiring and a data wiring crossing each other and defining a pixel region, the pixel region including a thin film transistor and a pixel electrode connected thereto; And a second substrate facing the first substrate and having a black matrix provided on a boundary of each pixel region on an inner surface thereof and a color filter layer formed corresponding to each pixel region, And the common electrode is provided on the entire surface of the filter layer.

In addition, the pixel electrode of the first substrate may be in the form of a bar, and may include a common electrode that is spaced apart from the bar-shaped pixel electrode and has a bar shape, And a common wiring connected to the common electrode is formed.

The pixel electrode provided on the first substrate is in the form of a plate in each pixel region. The common electrode overlaps with the pixel electrode and is provided on the entire surface of the display region with an insulating layer interposed therebetween. And a plurality of bar-shaped openings are provided for each pixel region.

The patterned retarder may further include an adhesive layer between the partial phase modulation layer and the front phase modulation layer, and a TAC (triacetyl cellulose) layer and a protective film on the outer surface of the front phase modulation layer .

The 3D image display device has a vertical viewing angle of 15 degrees to 165 degrees.

Since the vertical viewing angle for viewing a 3D image is substantially the same as the viewing angle (15 to 165 degrees) for viewing a 2D image, the vertical crosstalk is not originally generated, so that the 3D image display quality .

 Further, in order to secure a vertical viewing angle for 3D viewing as in the conventional 3D display device, it is necessary to make the width of the black matrix larger than that of a normal 2D viewing liquid crystal display device, or to form a separate black stripe in the patterned retarder There is no lowering of the aperture ratio, and as a result, the luminance characteristic is improved.

Further, it is possible to view a 3D image of excellent quality even in a tilted posture, for example, a pressed posture, without having to keep the polarizing glasses in the display area of the liquid crystal display device for the 3D viewing, There is an effect of providing a 3D image display device capable of preventing a problem such as a sudden drop in transmittance.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing a 3D image display apparatus using conventional polarizing glasses. Fig.
2 is a cross-sectional view of a portion of a conventional 3D video display device.
3 is a diagram illustrating a 3D image display apparatus according to an embodiment of the present invention.
4 is a cross-sectional view of a patterned retarder provided outside a second polarizer plate in a 3D image display apparatus according to an embodiment of the present invention.
5 is a diagram illustrating a polarization state of light in a state of passing through each component in a 3D image display apparatus according to an embodiment of the present invention.

Hereinafter, the configuration of a 3D image implementation system according to the present invention will be described in detail with reference to the drawings.

3 is a diagram illustrating a 3D image display apparatus according to an embodiment of the present invention.

3, a 3D image display apparatus 100 according to an exemplary embodiment of the present invention mainly includes a liquid crystal panel 112 and first and second polarizers 125 and 130 on both outer sides thereof A pattern driver 144 provided on the outer surface of the second polarizer 130 of the liquid crystal display device 110 and a second polarizer 130 disposed on the second polarizer 130, And polarizing glasses 150 for selectively transmitting the right circularly polarized light and the left circularly polarized light.

First, the liquid crystal display device 110 includes an array substrate 115, a color filter substrate 120, a liquid crystal panel 112 composed of a liquid crystal layer (not shown) interposed between the two substrates 115 and 120, First and second polarizers 125 and 130 attached to both outer sides of the liquid crystal panel 112 and a backlight unit (not shown) on the outer surface of the first polarizer 125 .

In the liquid crystal panel 112, gate and data lines 116 and 118 are formed on the array substrate 115 to define a plurality of pixel regions P intersecting each other.

A gate electrode (not shown), a gate insulating film (not shown) and a semiconductor layer (not shown) are sequentially stacked on the gate lines 116 and the data lines 118, And a thin film transistor Tr composed of a source electrode (not shown) and a drain electrode (not shown) spaced apart from each other. At this time, the semiconductor layer (not shown) may have a structure of an ohmic contact layer (not shown) of impurity amorphous silicon spaced apart from an active layer (not shown) of pure amorphous silicon, Layer (not shown).

Each pixel region P is provided with a pixel electrode 119 electrically connected to a drain electrode (not shown) of the thin film transistor Tr and having a plate shape.

The color filter substrate 120 is provided with a black matrix 121 corresponding to the boundary of each pixel region P and a color filter layer 121 composed of red, green, and blue color filter patterns sequentially corresponding to the pixel regions P. [ A color filter layer 122, and a common electrode (not shown) covering the color filter layer 122. At this time, in the color filter substrate 120, a black matrix 121 for suppressing the transmission of light is formed at the boundaries of red, green and blue color filter patterns, more precisely at the boundaries of the pixel regions P, Respectively. At this time, the first width is the same width as that of a black matrix provided in a general 2D viewing liquid crystal panel.

The liquid crystal panel 112 including these components can be variously modified in accordance with the driving mode of the liquid crystal display device 110.

Although the common electrode (not shown) is formed on the entire surface of the color filter substrate 120 in the embodiment of the present invention, the common electrode (not shown) provided on the front surface of the color filter substrate 120 May be omitted in the color filter substrate 120 and may be formed to alternate with the pixel electrode 119 in each pixel region P of the array substrate 115. [

In this case, a common wiring (not shown) is further provided on the array substrate 115 in parallel to the gate wiring 116 and the common electrode (not shown) is electrically connected to the common wiring And a plurality of pixel electrodes (not shown) and common electrodes (not shown) alternating in each pixel region P form a bar shape and are formed in each pixel region P, The liquid crystal panel is driven by a horizontal electric field realized between a bar-shaped pixel electrode (not shown) and a common electrode (not shown) that are spaced apart from each other.

As another example, the common electrode (not shown) provided on the array substrate 115 is formed on the entire surface of the display region, and the pixel electrode (not shown) And may be connected to a drain electrode (not shown) of the thin film transistor Tr. At this time, the pixel electrode (not shown) and the common electrode (not shown) are formed on the lower and upper portions of the insulating layer (not shown) with an insulating layer (not shown) therebetween, The pixel electrode (not shown) has a plurality of openings (not shown) having a bar shape corresponding to each pixel region P formed on the insulating layer (not shown) (Not shown), a common electrode (not shown), and a plurality of bar-shaped electrodes (not shown) provided on one of the two electrodes. Is driven by a fringe field generated by an aperture (not shown).

A plurality of pixel regions P connected to the same gate line 116 among a plurality of pixel regions P included in the liquid crystal panel 112 are defined as pixel lines OL and EL, In an embodiment of the present invention, a video signal applied to the left eye of the user for realizing a 3D image among the plurality of pixel lines OL and EL is represented through an odd-numbered pixel line OL, And the signal is expressed through the even-numbered pixel line EL.

At this time, a black matrix 121 is provided between neighboring pixel lines OL and EL to form a boundary between the pixel lines OL and EL.

On the other hand, in the embodiment of the present invention, the odd-numbered pixel line OL describes the left eye image and the even-numbered pixel line EL displays the right eye image, It is obvious that the even-numbered pixel line EL may display the left-eye image.

The first and second polarizers 125 and 130 are formed on the outer side of the liquid crystal panel 112 having such a configuration so that the transmission axes of the liquid crystal panel 112 and the first polarizer 125 are perpendicular to each other. And a backlight unit (not shown) is provided on the liquid crystal display device 110 to form a liquid crystal display device 110.

Meanwhile, as one of the most distinctive features in the 3D image display apparatus 101 according to the embodiment of the present invention, the pattern drift 144 is provided on the outer surface of the second polarizer 130.

4 is a cross-sectional view of a patterned retarder provided outside a second polarizer in a 3D image display apparatus according to an embodiment of the present invention.

3 and 4, the patterned retarder 144 has a laminated structure sequentially from a portion adjacent to the second polarizer 130, and has a partial phase composed of a birefringent material pattern 141a and a transparent pattern 141b A modulation layer 140 and a pressure sensitive adhesive layer 142 and a front phase modulation layer 143 made of a reactive mesogen material having birefringence characteristics and a TAC layer 146 and a protective film 147 are formed.

The partial phase modulation layer 140 has a birefringent material pattern (hereinafter referred to as " birefringent material pattern ") that changes the phase by? / 2 with respect to the incident light by having the optical axis thereof at an angle of +45 degrees or -45 degrees with respect to the transmission axis of the second polarizer (hereinafter referred to as " lambda / 2 phase modulation pattern 141a ") is formed in a stripe form only on any one of odd-numbered pixel lines OL and even-numbered pixel lines EL of the liquid crystal panel 112 Numbered pixel lines OL) and the other pixel lines (even-numbered pixel lines EL in the drawing) are not made of a birefringent material in a stripe type and do not cause any phase change A transparent material pattern 141b made of a material is formed.

The pattern reliader 144 is provided with an adhesive layer 142 on the outer surface of the partial phase modulation layer 140 including the λ / 2 phase modulation pattern 141a and the transparent material pattern 141b A front phase modulation layer 143 made of a birefringent material having a property of modulating a phase of? / 4 with respect to incident light, for example, a reactive mesogen is provided on the entire outer surface of the adhesive layer . At this time, the front phase modulation layer 143 for modulating the phase by? / 4 has the same optical axis for the entire surface of the patterned retarder 144.

A triacetyl cellulose (TAC) layer 146 is provided on the outer surface of the front phase modulating layer 143 to prevent deformation of the front phase modulating layer 143. A protective film 147 is formed on the outer surface of the triacetyl cellulose layer 146, . The protective film 147 is surface-treated on its outer surface to further diffuse or concentrate the light.

At this time, the? / 2 phase modulation pattern 141a is formed such that its optical axis is +45 degrees or -45 degrees with respect to the transmission axis of the second polarizer 130. The optical axis of the? / 2 phase difference pattern 141a is arranged so as to have a difference of +45 degrees or -45 degrees from the transmission axis of the second polarizer 130, so that the light passing therethrough is linearly polarized It is characterized by being able to maintain state.

Therefore, the light passing through the? / 2 phase modulation pattern 141a of the fractional phase modulation layer 140 has a linearly polarized state but is rotated 90 degrees with respect to the transmission axis of the second polarizer 130, And the light passing through the transparent pattern 141b of the fractional phase modulation layer 140 still maintains a linearly polarized state in a state of passing through the second polarizer plate.

On the other hand, the light emitted from the liquid crystal display device 110 is transmitted through the second polarizing plate 130, and thus all of the lights are linearly polarized in the same direction. Therefore, if only one of the polarized components of the left eye image and the right eye image is converted, the left eye image and the right eye image can be separated.

Therefore, it is not necessary to form a polymer material pattern, that is, a? / 2 phase difference pattern 141a which generates a phase difference in the pattern reliader 140, corresponding to all the pixel lines OL and EL, (OL) or an even-numbered pixel line (El) for generating a transparent pixel pattern, and a transparent pattern is formed of a material having no phase change for the remaining one pixel line .

At this time, the front phase modulation layer 143 having the characteristic of modulating the phase by lambda / 4 is provided on the entire outer surface of the partial phase modulation layer 140 having such a configuration, thereby transmitting the partial phase modulation layer 140 Polarized light and the left-handed circularly polarized state, respectively.

 Also in the case of the 3D display device including the polarizing glasses having only the linearly polarized state and selectively transmitting only the light in the linearly polarized state with respect to the light having the linearly polarized state perpendicular to each other, In the case of such a 3D image display device, polarizing glasses having only a polarizing film are horizontally aligned with the liquid crystal display device. When the polarizing glasses are tilted to one side after being out of the horizontal state, the polarization axis of the polarizing film provided in the glasses is distorted, and the light passing through the partial phase modulation layer receives 100% of the light having the linearly polarized state perpendicular to each other And the luminance characteristic is rapidly lowered.

Therefore, in order to solve the above problem, the 3D image display apparatus 100 according to the embodiment of the present invention further includes the front phase modulation layer 143 via the adhesive layer 142 to the outside of the partial phase modulation layer 140 So that light having a linearly polarized state perpendicular to each other is made to be a left-handed circularly polarized state and a right-handed circularly polarized state.

Meanwhile, the 3D image display apparatus 100 according to an embodiment of the present invention may further include polarizing glasses 150 for allowing the right and left eye image signals having the left and right circular polarization states to be respectively incident on the right and left eyes of the user Respectively.

The polarizing glasses 150 are provided with? / 4 phase films 152a and 152b for modulating the phase of? / 4 on the left and right lenses 150a and 150b respectively and polarizing films 154a and 154b ) Is provided.

At this time, the? / 4 phase films 152a and 152b provided on the left and right eye lenses 150a and 150b of the polarizing glasses 150 have their optical axes aligned with the front phase modulation layer of the pattern drift 143 having the same optical axis.

The 3D image display device 100 according to the embodiment of the present invention is capable of displaying the pattern reliader 144 through odd-numbered and even-numbered pixel lines OL and EL of the liquid crystal display field 110, Right circularly polarized light and left circularly polarized light passing through the polarizing glasses 150 are respectively incident on the left eye lens 150a and the right eye lens 150b of the polarizing glasses 150. [ At this time, the left and right eye lenses 150a and 150b having the polarizing films 154a and 154b having transmission axes perpendicular to the? / 4 phase films 152a and 152b selectively transmit light, The light transmitted through the left eye lens 150a of the eyeglasses 150 becomes the light emitted from the odd pixel lines OL and the light transmitted through the right eye lens 150b of the polarizing glasses 150 is transmitted through the even- And the light is incident on the left and right eyes of the user, respectively, so that the user can view 3D images of high quality.

The polarization state of light passing through each component of the 3D image display apparatus according to the embodiment of the present invention will be described in more detail.

FIG. 5 is a diagram illustrating a polarization state of light in a state of passing through each component in a 3D image display apparatus according to an embodiment of the present invention.

Referring to FIGS. 3 and 5, since the liquid crystal display device 110 finally passes through the second polarizer 130, the first polarizer 130, which is parallel to the transmission axis of the second polarizer 130, The light in a linearly polarized state is emitted.

The linearly polarized light in the first direction passes through the partial phase modulation layer 141 of the patterned retarder 144 and is linearly polarized in the first direction and in the second direction perpendicular to the first direction As shown in FIG. That is, the light passing through the transparent material pattern 141b among the constituent elements of the partial phase modulation layer 141 maintains the linearly polarized state in the first direction, and the? / 2 phase modulation pattern 141a The transmitted light has a linearly polarized state in the second direction.

The light having a linearly polarized state in the first and second directions is transmitted through the front phase modulation layer 143 of the pattern-driven retarder 144, which modulates the phase by? / 4, Linearly polarized light in the second direction becomes a left circularly polarized state, and the linearly polarized light in the second direction becomes a right circularly polarized state.

The left and right circularly polarized lights are incident on the left eye and right eye lenses 150a and 150b of the polarizing glasses 150, respectively. At this time, the right-handed polarized light passes through the? / 4 phase films 152a and 152b having the same optical axis for modulating the phase of? / 4 included in the polarizing glasses 150, And the left circularly polarized light is linearly polarized in the second direction.

The lights in the linearly polarized state in the first and second directions respectively reach the polarizing films 154a and 154b having mutually perpendicular transmission axes provided in the respective left and right eye lenses 150a and 150b , The left eye lens 150a is provided with the polarizing film 154a having the transmission axis in the first direction to finally transmit only the linearly polarized light in the first direction and the right eye lens 150b transmits the polarized light having the transmission axis in the second direction By providing the film 154b, only the linearly polarized light finally transmitted in the second direction is transmitted.

Therefore, the left circularly polarized light can not finally transmit the left eye lens 150a, only the right circularly polarized light is transmitted through the left eye lens, the right circularly polarized light does not finally transmit the right eye lens, Only the left eye image is applied to the left eye and the right eye image is applied to the right eye regardless of the position of the polarizing glasses, so that the user can obtain a high quality image with almost no vertical crosstalk 3D images can be viewed.

Since the upper and lower viewing angles are in the range of 15 to 165 degrees, which is the level of a general 2D image viewing liquid crystal display device, the upper and lower viewing angles are hardly restricted. Therefore, the 3D image display device 100 according to the embodiment of the present invention It is possible to view the 3D image at the position.

Further, in order to secure the upper and lower viewing angles for 3D viewing as in the conventional 3D display device, the width of the black matrix 121 may be made larger than that of a typical 2D viewing liquid crystal display device, or a separate black There is no need to form a stripe, so there is no drop in aperture ratio, and therefore, the luminance characteristic is improved.

The present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the spirit of the present invention.

100: 3D image display device 110: liquid crystal display device
115: array substrate 116: gate wiring
118: data line 119: pixel electrode
120: color filter substrate 121: black matrix
122: Color filter layer 125: First polarizing plate
130: second polarizer plate 140: partial phase modulation layer
141a:? / 2 phase modulation pattern 141b: transparent material pattern
143: front phase modulation layer 144: pattern-dependent retarder
150: polarizing glasses 150a: left eye lens
150b: Right eye lenses 152a and 152b:? / 4 phase film
154a and 154b: polarizing films having mutually perpendicular transmission axes
EL: even-numbered pixel line OL: odd-numbered pixel line
P: pixel region Tr: thin film transistor

Claims (13)

A liquid crystal display comprising: a liquid crystal panel; and first and second polarizing plates having transmission axes perpendicular to each other on both outer sides of the liquid crystal panel;
A phase modulation layer disposed on the outer surface of the second polarizer plate for modulating a phase of? / 4; a phase modulation layer disposed between the second polarizer and the front phase modulation layer, the? / 2 phase modulation pattern in stripe form; A patterned retarder including an alternating partial phase modulation layer;
And polarizing glasses selectively transmitting or blocking the light according to the state of light emitted through the patterned retarder,
The phase shift keying device according to claim 1, wherein the? / 2 phase modulation pattern is formed corresponding to an area corresponding to a selected pixel line among odd-numbered or even-numbered pixel lines of the liquid crystal panel, Lt; / RTI &
The first linearly polarized light emitted from the liquid crystal display device in the pixel line corresponding to the? / 2 phase modulation pattern is changed into the second linearly polarized light passing through the? / 2 phase modulation pattern and perpendicular to the first linearly polarized light, Modulated layer to be either right circularly polarized light or left circularly polarized light,
The first linearly polarized light emitted from the liquid crystal display device in the pixel line corresponding to the transparent material pattern passes through the transparent material pattern and then the first linearly polarized light is maintained and passes through the front phase modulation layer, Wherein the first and second image signals are different from each other.

delete The method according to claim 1,
And the optical axis of the? / 2 phase modulation pattern has a difference of +45 degrees or -45 degrees from the transmission axis of the second polarizer.
The method according to claim 1,
Wherein the polarizing glasses are provided with left and right eye lenses each including a? / 4 phase film and a polarizing film.
5. The method of claim 4,
Wherein the? / 4 phase film provided on each of the left and right eye lenses has an optical axis parallel to an optical axis of the front phase modulation layer of the patterned retarder.
6. The method of claim 5,
Wherein the polarizing films respectively provided on the left and right eye lenses have transmission axes perpendicular to each other in the left and right eye lenses.
The method according to claim 1,
And a backlight unit is provided on an outer surface of the first polarizer.
The method according to claim 1,
In the liquid crystal panel,
A first substrate having a gate wiring and a data wiring crossing each other and defining a pixel region, each pixel region including a thin film transistor and a pixel electrode connected thereto;
And a second substrate facing the first substrate and having a black matrix provided on an inner surface of each pixel region and a color filter layer formed corresponding to each pixel region.
9. The method of claim 8,
Wherein the color filter layer is formed on the second substrate and the common electrode is formed on the front surface of the color filter layer.
9. The method of claim 8,
The pixel electrode of the first substrate may be in the form of a bar and may be a bar electrode in common with the bar-shaped pixel electrode. And a common wiring connected to the common electrode is formed.
9. The method of claim 8,
The common electrode or the pixel electrode is provided with a common electrode on the entire surface of the display region. The common electrode or the pixel electrode includes a pixel electrode, Wherein a plurality of bar-shaped openings are provided for each region.
The method according to claim 1,
Wherein the pattern reliader is provided with an adhesive layer between the partial phase modulation layer and the front phase modulation layer and a TAC (triacetyl cellulose) layer and a protective film on the outer surface of the front phase modulation layer. Display device.
The method according to claim 1,
Wherein the 3D image display device has a vertical viewing angle of 15 to 165 degrees.

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