KR20120000706A - 3 dimensional stereography image displayable system - Google Patents

Abstract

PURPOSE: A three-dimensional image display system is provided to reduce manufacturing costs and improve brightness properties of a three-dimensional image. CONSTITUTION: A first polarizing plate(125) includes a first transmission axis in one outer surface of a liquid crystal display apparatus. A second polarizing plate(130) includes a second transmission axis which is orthogonal to the first transmission axis in the other outer surface. A lambda/2 patterned retarder(140) is attached to the outer surface of the second polarizing plate and includes a lambda/2 phase difference pattern corresponding to one region among regions corresponding to an even pixel line and odd pixel line in a plurality of pixel regions arranged in a display region. A polarizing film is attached on eyeglasses(145). The polarizing film selectively transmits or blocks light with a different phase emitted through the patterned retarder.

Description

3D stereoscopic image display system

The present invention relates to a 3D display implementation system, and more particularly, to an image display device having a patterned retarder and a 3D display implementation system having glasses.

In general, a liquid crystal display device is composed of two opposite electrodes and a liquid crystal layer formed therebetween. The liquid crystal molecules of the liquid crystal layer are driven by an electric field generated by applying a voltage to the two electrodes. Liquid crystal molecules have polarization property and optical anisotropy. Polarization property means that when liquid crystal molecules are placed in an electric field, charges in the liquid crystal molecules are attracted to both sides of the liquid crystal molecules, and the direction of molecular arrangement changes according to the electric field. Refers to changing the path or polarization state of the emitted light differently according to the incident direction or the polarization state of the incident light due to the elongated structure of the liquid crystal molecules and the aforementioned molecular arrangement direction.

Accordingly, the liquid crystal layer may exhibit a difference in transmittance due to voltages applied to the two electrodes, and display the 2D image by changing the difference for each pixel.

Meanwhile, recently, liquid crystal display devices capable of expressing 3D images have been developed in response to increasing user demand for liquid crystal display devices capable of realizing a 3D image.

In general, stereoscopic images expressing 3D are made by the principle of stereo vision through two eyes, using the parallax of two eyes, that is, binocular disparity which appears because the eyes are about 65 mm apart. A liquid crystal display device capable of displaying a stereoscopic image has been proposed.

In more detail, 3D image implementation, the left and right eyes looking at the liquid crystal display see different 2D images, and when these two images are transmitted to the brain through the retina, the brain accurately fuses each other and the original 3D image. It is to reproduce the sense of depth and the real sense of this phenomenon is commonly called stereography (stereography).

Techniques for displaying 3D stereoscopic images in a device having a 2D image display such as a liquid crystal display device include a stereoscopic image display by a special glasses, an autostereoscopic stereoscopic display, and a holographic display system.

The three-dimensional image display method by the special glasses transmits the polarized glasses method using the vibration direction or the rotation direction of the polarized light, the time-divided glasses method alternately presenting while switching the left and right images, and the light of different brightness in the left and right. It can be divided into concentration difference method.

In addition, the autostereoscopic 3D display method has a parallax barrier method that allows the user to separate and observe the image through a vertical grid-shaped aperture in front of each image corresponding to the left and right eyes, and a semi-cylindrical type. The lens may be divided into a lenticular method using a lenticular plate having a stripe arrangement of a cylindrical lens and an integral photography method using a lens plate shaped like a fly's eye.

Among them, a 3D image display device using special glasses is most commonly used.

1 is a view showing a 3D image implementation system using a conventional special glasses.

As shown in the drawing, the 3D image realization system using the conventional special glasses has a liquid crystal display device 10 displaying a large image and a lambda / 4 patterned retarder attached to an outer surface of the liquid crystal display device 10 ( 40 and spectacles 45 which selectively transmit images passing through the λ / 4 patterned retarder 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 interposed between the two substrates 15 and 20, and the two substrates 15, 20) The first and second polarizing plates 25 and 30 attached to the outer side surfaces of the first and second polarizing plates 25 and 30 are not shown in the figure, but the outer side surfaces of the first polarizing plate 25 include a backlight unit (not shown). In this case, the first and second polarizing plates 25 and 30 are configured such that their transmission axes perpendicularly cross each other.

On the other hand, the λ / 4 patterned retarder 40 provided on the outer surface of the second polarizing plate 30 attached to the outer surface of the color filter substrate 20 is located at an odd pixel line in the horizontal direction. Corresponding to the region P, the light emitted from the pixel region P through the second polarizing plate 30 is in a right circularly polarized state, and left circularly polarized light corresponding to the pixel region P positioned in even-numbered pixel lines. The birefringent material whose phase is internally changed so as to be in a state is patterned so as to alternate with each other for each pixel region P line. The lambda / 4 patterned retarder 40 for causing light to be left circularly polarized or right circularly polarized is characterized in that it has a lambda / 4 phase difference.

In the λ / 4 patterned retarder 40 in which the phase difference of λ / 4 is generated, the optical axis is +45 degrees with respect to the transmission axis of the second polarizing plate 30 provided in the liquid crystal display device 10, respectively. -45 degrees.

Therefore, according to the configuration of the conventional 3D image realization system 1 described above, the liquid crystal display device 10 is positioned in an odd pixel line after passing through the λ / 4 patterned retarder 40. Light in the right circularly polarized state is emitted from the region, and light in the left circularly polarized state is emitted from the pixel region located in the even-numbered pixel line. In this case, the left eye image signal incident to the left eye of the user is applied to the pixel area positioned in the odd pixel line of the liquid crystal display device 10, and the right eye of the pixel area P located to the even pixel line of the liquid crystal display device 10. By applying an incident right eye image signal, a display device for realizing a 3D image is realized.

On the other hand, the glasses 45 for viewing the 3D image as one set with the liquid crystal display device 10 including the lambda / 4 patterned retarder 40 having the above-described configuration, the conventional glasses made of a transparent glass material Polarizing films 50a and 50b and? / 4 retardation film (not shown).

At this time, when wearing the glasses, the left eye glasses 45a corresponding to the user's left eye are attached with a λ / 4 phase film (not shown) and a first polarizing film 50a which serve to convert circularly polarized light into linearly polarized light. In addition, the right eye glasses 45b have a λ / 4 phase film (not shown) and a polarizing film 150b that serve to selectively convert circularly polarized light into linearly polarized light.

Accordingly, the liquid crystal display device 10 in which a user wears the 3D image glasses 45 having such a configuration, alternately line-by-line, and displays left and right eye image data and displays images having different circularly polarized states. When viewing an image through the left eye glasses 45a, a left eye image is incident through the left eye glasses 45a, and a right eye image is incident through the right eye glasses 45b. It becomes possible.

However, in the 3D image implementing system 1 having the above-described configuration, the first phase pattern 41a and the second phase pattern 41b having optical axes orthogonal to each other on the front surface of the liquid crystal display device 10 are alternately formed. Since the λ / 4 patterned retarder 40 is provided and the λ / 4 retardation film (not shown) is provided in the glasses 45, the polarization is changed, so that the Polarization conversion proceeds differently for each wavelength. That is, by passing through the [lambda] / 4 patterned retarder 40 and the [lambda] / 4 retardation film (not shown), the characteristic difference of the wavelength-dependent photo conversion is increased.

2 is a simplified diagram of light intensity after light having different wavelength bands passes through a lambda / 4 patterned retarder and a lambda / 4 phase difference film in a conventional 3D imaging system having two lambda / 4 phase difference films. The figure shown.

As shown, the light having red, green, and blue light passing through the liquid crystal display device 10 and having different wavelengths has the same intensity, but is provided with a λ / 4 patterned lighter provided on the front surface of the liquid crystal display device 10. The intensity of the green light having a wavelength range of 550 nm due to the characteristic of the λ / 4 patterned retarder 40 itself, which is changed to the left or right polarization state by passing through the 40, and the phase delay is precisely generated according to the 550 nm wavelength, respectively. Although does not change, the phase error is generated for red light having a larger wavelength band or blue light having a smaller wavelength band, thereby decreasing its intensity.

In addition, the left or right flattened light passes through the λ / 4 patterned retarder 40 to pass through the λ / 4 retardation film 43 provided in the glasses (not shown), thereby retarding as much as λ / 4. Is generated again to form a linearly polarized state, except for light having a wavelength range of 550nm, light having a wavelength band larger or smaller than this occurs again, and a phase error occurs again. By passing through the polarizing film 50 provided in the (not shown) is the light of the state polarized in a specific direction. In this case, the light passing through the polarizing film 50 has almost no change in the intensity of the light of 550nm wavelength band, the light of the wavelength band larger or smaller than this is reduced.

Therefore, the user who finally views the 3D image through the conventional 3D realization system senses the color difference due to the change in the intensity of light in each wavelength band, thereby deteriorating display quality.

In addition, since the light passing through the liquid crystal display device 10 must pass through the λ / 4 patterned retarder 40 and the λ / 4 retardation film 43, luminance decreases, and the front surface of the liquid crystal display device 10 is reduced. In the case of the λ / 4 patterned retarder 40, the first phase pattern (41a in FIG. 1) having a first optical axis for displaying a left eye image in an alternate form such that the optical axes are formed at 90 degrees to each other Since a second phase pattern having a second optical axis orthogonal to the first optical axis for displaying an image (41b in FIG. 1) must be provided, the manufacturing process is complicated and substantially two lambda / 4 phase difference films 40 43), the manufacturing cost of the 3D image realization system is increasing.

Accordingly, the present invention has been made to solve the above problems, and by reducing the structure and the number of retardation film to simplify the manufacturing process and at the same time to reduce the material cost, to prevent the reduction of light intensity and to improve the brightness characteristics It is an object of the present invention to provide a 3D image realization system.

In order to achieve the above object, a 3D image implementation system according to an embodiment of the present invention, a liquid crystal display device; A first polarizing plate having a first transmission axis on one outer side of the liquid crystal display and a second polarizing plate having a first transmission axis orthogonal to the first transmission axis on the other outer side; One of the plurality of pixel areas in the display area, the area corresponding to the odd-numbered pixel line and the even-numbered pixel line, is attached to an outer surface of the second polarizer and has a λ / 2 phase difference pattern corresponding to the area. A lambda / 2 patterned retarder; It includes glasses with a polarizing film to selectively transmit or block the light out of phase out through the λ / 2 patterned retarder.

In this case, the λ / 2 phase difference pattern is formed in a region corresponding to the odd pixel line in the λ / 2 patterned retarder, and a transparent material pattern which does not generate a phase difference in a portion corresponding to the even pixel line It is characterized in that it consists only of a transparent substrate formed or forming the base of the λ / 2 patterned retarder.

The λ / 2 retardation pattern is made so that the optical axis has a difference of +45 degrees or -45 degrees with the second transmission axis of the second polarizing plate, wherein the polarizing film is composed of first and second polarizing films, The first polarizing film having a third transmission axis is provided for one of the glasses for the left eye or the right eye, and the other polarizing film has the fourth transmission axis perpendicular to the third transmission axis. It is characterized by being provided.

In addition, the spectacle is characterized in that the lambda / 2 phase difference film is configured on the entire polarizing film.

In addition, the λ / 2 retardation pattern is made so that the optical axis has a difference of +22.5 degrees or -22.5 with the second transmission axis of the second polarizing plate, wherein the polarizing film is made of first and second polarizing film The first polarizing film having a third transmission axis is provided for one of the glasses for the left eye and the right eye, and the second one has the fourth transmission axis perpendicular to the third transmission axis. A polarizing film is provided.

In addition, the λ / 2 retardation film has an optical axis of +67.5 degrees or -67.5 degrees with the second transmission axis of the second polarizing plate, the optical axis of the λ / 2 phase difference pattern with the λ / 2 patterned retarder It is characterized by being formed to make a 45 degree difference with.

In addition, the transmission axis of any one of the third transmission axis or the fourth transmission axis is characterized in that formed in parallel with the second transmission axis of the second polarizing plate.

The lambda / 2 patterned retarder is defined as a first region in which the lambda / 2 phase difference pattern is formed to generate a lambda / 2 phase difference with respect to transmitted light, and a second region in which lambda / 2 phase difference is not generated. A base forming a base; An alignment layer formed on the entire surface of the substrate and having polymer side chains aligned in one direction corresponding to the first region and disordered polymer side chains corresponding to the second region; A plurality of liquid crystal molecules aligned in one direction corresponding to the first region on the alignment layer, and a liquid crystal layer having a plurality of disordered liquid crystal molecules corresponding to the second region, and including one direction formed in the first region The liquid crystal layer having a plurality of liquid crystal molecules aligned with each other forms a λ / 2 phase difference pattern.

The lambda / 2 patterned retarder is defined as a first region in which the lambda / 2 phase difference pattern is formed to generate a lambda / 2 phase difference with respect to transmitted light, and a second region in which lambda / 2 phase difference is not generated. A base forming a base; An orientation pattern having polymer side chains aligned in one direction corresponding to the first region of the substrate; A plurality of liquid crystal molecules are formed on the entire surface of the substrate above the alignment pattern, and aligned in one direction to correspond to the first region provided with the alignment pattern, and a plurality of disordered liquid crystal molecules correspond to the second region. And a liquid crystal layer having a plurality of liquid crystal molecules aligned in one direction formed in the first region to form a lambda / 2 phase difference pattern.

The lambda / 2 patterned retarder is defined as a first region in which the lambda / 2 phase difference pattern is formed to generate a lambda / 2 phase difference with respect to transmitted light, and a second region in which lambda / 2 phase difference is not generated. A base forming a base; An alignment layer formed on the entire surface of the substrate and having polymer side chains aligned in one direction corresponding to the first region and disordered polymer side chains corresponding to the second region; A partition wall of black formed at a boundary between the first and second regions over the alignment layer; A liquid crystal pattern formed between the partitions of the black to correspond to the first region and including a plurality of liquid crystal molecules aligned in one direction, wherein the liquid crystal pattern having the plurality of aligned liquid crystal molecules forms a lambda / 2 phase difference pattern And a transparent material pattern formed of a transparent organic material corresponding to the second region between the partitions of the black.

The 3D image realization system according to the present invention has the effect of reducing the manufacturing cost and improving the luminance characteristics of the 3D image by proposing a structure that allows viewing of the 3D image without the phase difference plate in the glasses.

The λ / 2 phase difference pattern is provided so that the phase difference is generated only in any one of the left eye and right eye image strings instead of the λ / 4 patterned retarder of the conventional 3D image forming system in which the left eye image string and the right image string are alternately manufactured. By providing the lambda / 2 phase difference patterned detarder, there is an effect of reducing the material cost.

1 is a view showing a 3D image realization system using a conventional special glasses.
2 is a simplified diagram of light intensity after light having different wavelength bands passes through a lambda / 4 patterned retarder and a lambda / 4 phase difference film in a conventional 3D imaging system having two lambda / 4 phase difference films. Shown.
3 is a diagram illustrating a 3D image implementing system according to a first embodiment of the present invention.
4 is a view briefly showing a state of transmission of each component of light of the 3D image realization system according to the first embodiment of the present invention.
FIG. 5 is a diagram schematically illustrating components of a 3D image implementing system according to a second embodiment of the present invention. FIG.
6A to 6D are cross-sectional views of manufacturing steps of the lambda / 2 patterned retarder according to the first embodiment.
7A to 7E are cross-sectional views of manufacturing steps of a lambda / 2 patterned retarder according to a second embodiment of the present invention.
8A to 8D are cross-sectional views illustrating a step of manufacturing a lambda / 2 patterned retarder according to a third embodiment of the present invention.
9A to 9C are cross-sectional views of a step of fabricating a lambda / 2 patterned retarder according to a fourth embodiment of the present invention.

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

3 is a diagram illustrating a 3D image implementation system according to a first embodiment of the present invention, and FIG. 4 is a view illustrating a state of transmission of each component of light of the 3D image implementation system according to the first embodiment of the present invention. It is a simplified diagram.

First, referring to FIG. 3, the 3D image realization system 100 according to the first exemplary embodiment of the present invention includes a liquid crystal display for displaying an image having first and second polarizing plates 125 and 130 on both outer surfaces thereof. The device 110, the λ / 2 patterned retarder 140 having a λ / 2 phase difference pattern 141a partially provided on an outer surface of the second polarizing plate 130 of the liquid crystal display 110, The glasses 145 are provided with only polarizing films 150a and 150b disposed to have transmission axes perpendicular to the right eye.

First, the liquid crystal display 110 includes an array substrate 115, a color filter substrate 120, a liquid crystal layer (not shown) interposed between the two substrates 115 and 120, and the two substrates 115, 120. Although not shown in the drawings, the first and second polarizing plates 125 and 130 attached to the outer side surfaces of the first polarizing plate 125 include a backlight unit (not shown).

The array substrate 115 is connected to the gate and data lines 116 and 118 and the two lines 116 and 118 that define a plurality of pixel regions P and cross each other to correspond to each pixel region P. A thin film transistor Tr is provided, connected to the thin film transistor Tr, and provided with a pixel electrode 119.

The color filter substrate 120 includes a black matrix 121 corresponding to a boundary of each pixel region P, and a color filter layer 122 including red, green, and blue color filter patterns sequentially corresponding to each pixel region P. FIG. ) And a color filter layer 122 are disposed on the front surface of the common electrode (not shown).

In this case, the common electrode (not shown) provided on the front surface of the color filter substrate 120 according to the mode of the liquid crystal display device 110 may have the pixel electrode 119 in each pixel region P of the array substrate 115. It may be formed alternately with.

On the other hand, the first and second polarizing plates (125, 130) is characterized in that the transmission axis is configured to perpendicularly cross each other.

In addition, as the most characteristic feature of the first embodiment of the present invention, the λ / 2 patterned retarder 140 provided on the outer surface of the second polarizing plate 130 has a birefringence which generates a phase difference of λ / 2. The material pattern (hereinafter referred to as lambda / 2 phase difference pattern 141a) is formed only corresponding to any one of the left eye video train and the right eye video train.

In the figure, an λ / 2 phase difference pattern 141a is formed as an example of the left eye image string only. In this case, the λ / 2 patterned retarder 140 is formed such that the optical axis of the λ / 2 phase difference pattern 141a is +45 degrees or -45 degrees with the transmission axis of the second polarizing plate 130. . As such, the optical axis of the λ / 2 phase difference pattern 141a is disposed to have a 45 degree difference from the transmission axis of the second polarizing plate 130, so that the light passing through the λ / 2 phase difference pattern 141a can maintain a linearly polarized state having a phase difference of λ / 2. It is characteristic.

Light emitted from the liquid crystal display device 110 passes through the second polarizing plate 130 to have a polarization state. Therefore, when only the polarization of either the left eye image and the right eye image is converted, the left eye image and the right eye image can be separated.

Therefore, in the lambda / 2 patterned retarder 140, the polymer material pattern that generates the phase difference, that is, the lambda / 2 phase difference pattern 141a, is formed in only one column of the left eye or the right eye image column without having to form all the columns. Is characteristic.

In this case, the polarizing films 150a and 150b provided in the glasses 145 may have transmission axes perpendicular to each other with respect to the left and right eye glasses 145a and 145b, and according to the first embodiment of the present invention, for the right eye The glasses 150b include a polarizing film 150b having a transmission axis parallel to the transmission axis of the second polarizing plate 130, and the glasses 150a having a left eye are provided with a transmission axis parallel to the transmission axis of the first polarizing plate 125. It is shown as an example that the polarizing film 150a is provided.

In the lambda / 2 patterned retarder 140 according to the first embodiment of the present invention, the lambda / 2 phase difference pattern 141a is provided only for any one of the left eye and right eye image strings, thereby providing both the left eye and right eye image strings. Compared to the conventional λ / 4 patterned retarder (40 in FIG. 1) in which the phase material pattern is formed, the number of core processes for forming the phase difference material pattern can be reduced, and the material cost can be reduced.

In addition, in the 3D image realization system according to the second embodiment of the present invention, since the light passing through the λ / 2 patterned retarder 140 becomes a linearly polarized state, an additional retardation film is provided in the glasses 145 for viewing 3D images. Not required. Therefore, the 3D image implementation system 100 according to the first embodiment of the present invention is characterized in that the structure is simple compared to the conventional 3D image implementation system (1 of FIG. 1) and the manufacturing cost can be reduced.

Next, the state of light after passing through the components of the 3D image realization system according to the first embodiment of the present invention will be described with reference to FIG. 4.

All light passing through the second polarizing plate 130 of the liquid crystal display 110 has a first linearly polarized state. Thereafter, the light a having the first linearly polarized state passes through the λ / 2 patterned retarder 140, wherein the λ / 2 phase difference pattern 141a in the λ / 2 patterned retarder 140 is performed. The light b that has passed through the left eye image string formed by) has a second linearly polarized state with its phase shifted by λ / 2, and passes through the right eye image string where the λ / 2 phase difference pattern 141a is not formed. One light b is still in the first linearly polarized state without phase change.

Thereafter, the light (a, b) having the first linearly polarized state and the second linearly polarized state pass through glasses (not shown) equipped with polarizing films 150a and 150b having transmission axes perpendicular to each other. In this case, the light a having the first linearly polarized state in the optical axis directions of the polarizing films 150a and 150b passes through the eyeglasses (not shown) while maintaining the first linearly polarized state. The light is not transmitted through the left eye glasses (not shown) by being blocked by the polarizing film 150a having a transmission axis perpendicular to the first linearly polarized light with respect to the left eye glasses (not shown).

On the other hand, the light (b) having the second linearly polarized state has a polarization state parallel to the optical axis of the polarizing film (150b) for the eye glasses (not shown) while maintaining the second linearly polarized state as it is Although it transmits, the optical axis of the polarizing film 150a does not transmit to the left eye glasses (not shown) because the optical axis of the polarizing film 150a has an arrangement perpendicular to the second linearly polarized state.

Accordingly, the 3D image realization system 100 according to the first exemplary embodiment of the present invention has a λ / 2 phase difference pattern 141a that changes its phase by λ / 2 on the outer surface of the liquid crystal display 110 as described above. And a lambda / 2 patterned retarder 140 selectively formed with respect to any one of the left eye and right eye image trains, and with respect to the glasses (145 in FIG. 3), the transmission axes are perpendicular to each other without a separate retardation film. Even if only the flat film (150a, 150b) having a state can be implemented smoothly 3D image, there is an advantage that can reduce the manufacturing cost by simplifying the configuration.

FIG. 5 is a view schematically illustrating components of a 3D image implementing system according to a second exemplary embodiment of the present invention, and illustrates polarization states and intensities after passing through each component of light. In this case, in the λ / 2 patterned retarder, the portion where the λ / 2 phase difference pattern is formed is shown, and the polarization state and the intensity of light are omitted for the portion where the λ / 2 phase difference pattern is not provided. In addition, the same reference numerals are assigned to the same components as those in the first embodiment for convenience.

3D image realization system 100 according to the second embodiment of the present invention is a liquid crystal display for displaying an image having the first and second polarizing plates (125, 130) disposed so that the transmission axis is perpendicular to both outer surfaces A lambda / 2 patterned retarder 140 attached to an outer surface of the second polarizing plate 130 of the liquid crystal display 110 and partially provided with a lambda / 2 phase difference pattern 141a; Glasses having a λ / 2 retardation film 144 having an optical axis forming an angle with a transmission axis of the second polarizing plate 130 and polarizing films 150 arranged to have transmission axes perpendicular to each other for the left and right eyes ( Not shown).

3D image realization system 100 according to the second embodiment of the present invention is different from the 3D image realization system (100 of FIG. 3) according to the first embodiment is in the glasses (not shown). In the first embodiment, only the polarizing film 150 of FIG. 4 is provided in the glasses 145 of FIG. 3, but in the second embodiment, the glasses for the right eye and the left eye glasses together with the polarizing film 150 are provided. It is a characteristic that the (lambda) / 2 phase difference film 144 which has the optical axis orthogonal to each other is provided.

At this time, in the second embodiment, in the case of the λ / 2 patterned retarder 140 provided on the outer surface of the second polarizing plate 130, the optical axis of the λ / 2 phase difference pattern 141a partially formed is The polarizing plate 130 is formed to have a transmission axis and +22.5 or -22.5 degrees. Further, the λ / 2 retardation film 144 provided in the glasses (not shown) has an optical axis of the second polarizing plate 130. And a transmission axis of +67.5 degrees or -67.5 degrees, and at the same time formed a 45 degree difference from the optical axis of the lambda / 2 phase difference pattern 141a provided in the lambda / 2 patterned retarder 140 to be.

By such a configuration, red, green, and blue light (R, G, B) having different wavelength bands passing through the second polarizing plate 130 of the liquid crystal display device 110 have a first linearly polarized state. In which the optical axis passes through the λ / 2 phase difference pattern 141a in the λ / 2 patterned retarder 140 having a transmission axis of the second polarizing plate 130 and +22.5 degrees (or −22.5 degrees). Each has an elliptical polarization and a second linearly polarized state. The λ / 2 patterned retarder 140 is also manufactured based on a wavelength of 550 nm, which is a wavelength band of green light, thereby maintaining a first linearly polarized state for the green light G, but for red and blue light R and B. It will have an elliptical polarization state. In this case, the light intensity is maintained constant due to the characteristic of the λ / 2 patterned retarder 140.

Next, the light transmitted through the λ / 2 patterned retarder 140 again has λ having an optical axis 45 degrees with an optical axis of the λ / 2 patterned retarder 140 provided in glasses (not shown). By passing through the / 2 retardation film 144, the red, green, and blue light (R, G, B) all form a third linearly polarized state perpendicular to the first linearly polarized state, and the intensity of the light remains the same magnitude. do.

Thereafter, the light transmitted through the λ / 2 retardation film 144 is transmitted through the polarizing film 150a. The light transmitted through the polarizing film 150a still has a third linearly polarized state and the light intensity is The level of the light emitted through the second polarizing plate 130 is the same.

Although not shown in the drawings, in the portion where the λ / 2 phase difference pattern 141a is not provided, light of each color that is substantially transmitted through the second polarizing plate 130 and has a first linearly polarized state is emitted from the glasses (not shown). Since only the λ / 2 retardation film 144a provided in) is transmitted, the light intensity is the same level as that of the light transmitted through the second polarizing plate 130 and a fourth linearly polarized state.

On the other hand, the polarizing film 144 provided in the glasses (not shown) is arranged so that the transmission axis in the left eye and right eye is perpendicular to each other, the light having substantially the third linear polarization state and the fourth linear polarization state The left eye and right eye glasses (not shown) provided with the polarizing film 144a (not shown) having transmission axes perpendicular to each other are selectively transmitted or not transmitted.

That is, the light having the first linearly polarized state passes through the λ / 2 retardation film with respect to the right eye glasses (not shown) and has a fourth linearly polarized state and passes through the polarizing film (not shown) as it is. The eye glasses (not shown) are blocked by the polarizing film 150a having a transmission axis perpendicular to the light in the fourth linearly polarized state, and thus are not transmitted through the left eye glasses (not shown).

On the other hand, the light having the third linearly polarized state is transmitted through the portion in which the λ / 2 phase difference pattern 141a provided in the λ / 2 patterned retarder 140 is formed, so that By having a polarization state parallel to the transmission axis of the polarizing film 150a, the transmission is performed as it is while maintaining the third linear polarization state. However, the transmission axis of the polarizing film (not shown) for the right eye glasses (not shown) is Since it has an arrangement perpendicular to the third linearly polarized state, it cannot transmit.

Therefore, the 3D image realization system according to the second embodiment of the present invention also the left eye image is incident to the left eye of the user by the selective transmission of the left eye glasses, the right eye image to the right eye of the user by the selective transmission of the right eye glasses The incident allows the user to watch 3D images.

At this time, in the second embodiment of the present invention, the λ / 2 patterned retarder 140 and λ partially provided with the λ / 2 retardation pattern to have the transmission axis of the second polarizing plate 130 and the optical axis arranged at a specific angle. Providing the / 2 retardation film 144 has the advantage that it is possible to prevent the reduction of the light intensity, further suppress the reduction of the 3D display quality due to the color difference deformation of the user.

Hereinafter, a method of manufacturing the lambda / 2 patterned retarder, characterized in that the lambda / 2 phase difference pattern provided in the 3D image realization system according to the first and second embodiments of the present invention partially formed.

6A through 6D are cross-sectional views illustrating manufacturing steps of the lambda / 2 patterned retarder according to the first embodiment.

First, as shown in FIG. 6A, a polymer side chain (not shown) is oriented in one direction in response to a polymer material such as UV light on a substrate 210 made of a transparent material such as glass, plastic, or TAC film. By applying and curing a material having the arranged properties, an alignment film 215 having a disordered plurality of polymer side chains is formed on the entire surface.

6B, an exposure mask 290 having a light transmission area TA and a blocking area BA is disposed on the alignment layer 215, and the substrate is disposed on the exposure mask 290. The alignment film 215 is selectively oriented by irradiating polarized UV light on the entire surface of the 210. That is, UV light is irradiated to any one of the left eye image train and the right eye video train so that the polymer side chains (not shown) are arranged in one direction. The part not irradiated with UV light is in a state where the polymer side chains (not shown) are still arranged in disorder. Accordingly, by selective irradiation of the polarized UV light, the first region 215a in which the polymer side chains (not shown) are well aligned in one direction and the second region 215b in which the polymer side chains (not shown) are randomly arranged. The alignment layer 215 is formed.

Next, as shown in FIG. 6C, the partially polarized UV light is irradiated to apply a liquid crystal material to the alignment layer 215 having the first and second regions 215a and 215b to a predetermined thickness to form a liquid crystal layer. To form 220. In this case, the liquid crystal layer 220 is in a state in which polymer side chains (not shown) are arranged in one direction with respect to the first region irradiated with the polarized UV light under the influence of the alignment layer 215 disposed below the liquid crystal layer. Since the liquid crystal molecules in the layer 220a are arranged in one direction, and the second region in which the polarized UV light is not irradiated has the disordered state of the polymer side chains (not shown), the liquid crystal molecules in the liquid crystal layer 220b are also disorderly without orientation. It is characterized by being arranged.

Next, as shown in FIG. 6D, UV light is irradiated on the entire surface of the liquid crystal layers 220a and 220b formed on the alignment layer 215 in an orderly or disordered manner according to positions. By hardening, the liquid crystal molecules partially aligned in one direction can be maintained continuously, thereby completing the lambda / 2 patterned retarder 201. In this case, the liquid crystal layer 220a having liquid crystal molecules arranged in one direction in the first region 215a forms a λ / 2 phase difference pattern.

7A to 7E are cross-sectional views illustrating manufacturing steps of the lambda / 2 patterned retarder according to the second embodiment of the present invention.

In the case of the lambda / 2 patterned retarder according to the first embodiment described above, the liquid crystal layer is formed on the entire surface of the substrate, and thus, the contribution of the lambda / 2 patterned retarder according to the second embodiment of the present invention is not significant. Is more effective than the first embodiment in terms of material cost reduction.

First, as shown in FIG. 7A, the alignment layer 215 is formed on the substrate 210 made of the material shown in the first embodiment.

Next, as shown in FIG. 7B, a black partition wall 240 is formed to block light transmission in response to a boundary between the right eye image string and the left eye image string.

Although the partition wall 240 of black is not mentioned in the first exemplary embodiment, at the boundary between the right eye image string and the left eye image string, characteristic mixing occurs due to the difference in characteristics between the two regions, and transmission of the light having the characteristics mixed therewith. In order to prevent the black partition wall is formed.

Next, as shown in FIG. 7C, polarized UV light using an exposure mask 290 having a transmission area TA and a blocking area BA with respect to the alignment layer 215 exposed to the outside of the black partition wall 240. The exposure is performed to form the disordered second region 215b with the first region 215a where the side chains (not shown) of the polymer are aligned in one direction.

Next, as shown in FIG. 7D, the inkjet apparatus corresponds to the first region 215a in which the polymer side chains (not shown) on the alignment layer 215 exposed outside the black partition wall 240 are aligned in one direction. The liquid crystal pattern 221 is partially formed by applying liquid crystal using (not shown). At this time, the liquid crystal molecules in the partially formed liquid crystal pattern 221 are in a state arranged in one direction.

Next, as shown in FIG. 7E, lambda / 2 according to the second embodiment of the present invention by irradiating UV light to the entire surface of the substrate 210 on which the liquid crystal pattern 221 is formed to cure the liquid crystal pattern 221. Patterned retarder 202 is formed. In this case, the liquid crystal pattern 221 having liquid crystal molecules arranged in one direction in the first region 215a forms a λ / 2 phase difference pattern.

8A through 8D are cross-sectional views illustrating a step of manufacturing a lambda / 2 patterned retarder according to a third embodiment of the present invention.

First, as shown in FIG. 8A, the alignment liquid is selectively applied to the substrate 210 made of the material shown in the first embodiment through an ink jet apparatus (not shown) or the like, that is, the right eye image train or the left eye. By selectively applying and curing the alignment liquid for only one of the image rows, the alignment pattern 216 is formed to be spaced apart by a predetermined interval.

Next, as shown in FIG. 8B, the alignment pattern 216 is irradiated with UV light polarized on the entire surface without an exposure mask or by rubbing using a rubbing device (not shown) although not shown in the drawing. The polymer side chains (not shown) in 216 are arranged in one direction.

Next, as shown in FIG. 8C, the liquid crystal layer 220 is formed by coating a liquid crystal on the entire surface of the alignment pattern 216 having polymer side chains (not shown) arranged in one direction. At this time, in the liquid crystal layer 220a corresponding to the portion where the alignment pattern 216 is formed, the liquid crystal molecules are arranged in one direction, and the liquid crystal layer corresponding to the portion where the alignment pattern 216 is not formed ( Inside the 220b), the liquid crystal molecules achieve a disordered state.

Next, as shown in FIG. 8D, the UV light is irradiated onto the liquid crystal layer 220 to cure the liquid crystal layer 220, thereby λ / 2 patterned retarder 203 according to the third embodiment of the present invention. To complete. At this time, the liquid crystal layer 220a having the liquid crystal molecules arranged in one direction corresponding to the alignment pattern 216 forms a λ / 2 phase difference pattern.

9A to 9C are cross-sectional views illustrating manufacturing steps of the lambda / 2 patterned retarder according to the fourth embodiment of the present invention.

First, as shown in FIG. 9A, an alignment liquid is selectively applied to an substrate 210 made of the material shown in the first embodiment by using an ink jet apparatus (not shown) or the like, and then cured selectively. Pattern 216 is formed. Thereafter, the alignment pattern 216 is irradiated with polarized UV light on the entire surface without an exposure mask so that the polymer side chains (not shown) are arranged in one direction.

Next, the alignment pattern 216 may be selectively coated on the alignment pattern 216 by using an ink jet device (not shown), and then selectively coated with an organic material, such as a transparent resist, which is cheaper than the alignment liquid and has a transparent characteristic. A transparent material pattern 230 having a height higher than that of the alignment pattern is formed between 216.

Next, as shown in FIG. 9B, the liquid crystal molecules are selectively applied to the liquid crystal molecules in one direction by using an ink jet device (not shown) or the like on the alignment patterns 216 exposed between the transparent material patterns 230. The liquid crystal patterns 221 in the arranged state are formed. In this case, the transparent material pattern 213 is used as a partition wall when the liquid crystal is applied.

Next, as illustrated in FIG. 9C, λ according to the fourth exemplary embodiment of the present invention is provided by curing UV light onto the substrate 210 on which the liquid crystal pattern 221 is formed to harden the liquid crystal pattern 221. Complete the / 2 patterned retarder 204. At this time, the liquid crystal pattern 221 having liquid crystal molecules arranged in one direction corresponding to the alignment pattern 216 forms a lambda / 2 phase difference pattern.

The lambda / 2 patterned retarder manufactured as described above has the advantage of reducing the material cost compared to the lambda / 4 patterned retarder provided with a lambda / 4 phase difference pattern by alternately arranged so as to be perpendicular to the conventional optical axis.

100: 3D image realization system 110: liquid crystal display device
115: array substrate 116: gate wiring
118 data wiring 119 pixel electrode
120: color filter substrate 212: black matrix
122: color filter layer 125: first polarizing plate
130: second polarizing plate 140: lambda / 2 patterned retarder
141a: lambda / 2 phase difference pattern 145: glasses
145a: left eye glasses 145b: right eye glasses
150a, 150b: first polarizing film

Claims (13)

A liquid crystal display device;
A first polarizing plate having a first transmission axis on one outer side of the liquid crystal display and a second polarizing plate having a first transmission axis orthogonal to the first transmission axis on the other outer side;
One of the plurality of pixel areas in the display area, the area corresponding to the odd-numbered pixel line and the even-numbered pixel line, is attached to an outer surface of the second polarizer and has a λ / 2 phase difference pattern corresponding to the area. A lambda / 2 patterned retarder;
Glasses with polarizing film for selectively transmitting or blocking light having a different phase from the λ / 2 patterned retarder
3D image implementation system comprising a.
The method of claim 1,
The λ / 2 phase difference pattern is formed in a region corresponding to the odd-numbered pixel lines in the λ / 2 patterned retarder, and a transparent material pattern that does not generate a phase difference is formed in a portion corresponding to the even-numbered pixel lines. Or a transparent substrate constituting the base of the λ / 2 patterned retarder.
The method of claim 1,
The lambda / 2 phase difference pattern is characterized in that the optical axis has a difference of +45 degrees or -45 degrees with the second transmission axis of the second polarizing plate.
The method of claim 3, wherein
The polarizing film is composed of first and second polarizing films, the first polarizing film having a third transmission axis for any one of the left eye or right eye glasses is provided, and the other one of the glasses And a second polarizing film having a fourth transmission axis perpendicular to the transmission axis.
The method of claim 1,
The glasses have a 3D image implementation system, characterized in that the lambda / 2 phase difference film is configured on the front of the polarizing film.
The method of claim 5, wherein
The lambda / 2 phase difference pattern is characterized in that the optical axis is made to have a difference of +22.5 degrees or -22.5 with the second transmission axis of the second polarizing plate.
The method according to claim 6,
The polarizing film is composed of first and second polarizing films, the first polarizing film having a third transmission axis for any one of the left eye or right eye glasses is provided, and the other one of the glasses And a second polarizing film having a fourth transmission axis perpendicular to the transmission axis.
The method of claim 7, wherein
The λ / 2 retardation film has an optical axis of +67.5 degrees or −67.5 degrees with a second transmission axis of the second polarizing plate, and the optical axis of the λ / 2 phase difference pattern with the λ / 2 patterned retarder. 3D image realization system, characterized in that formed to make a difference.
The method according to claim 4 or 8,
The transmission axis of any one of the third transmission axis or the fourth transmission axis is characterized in that formed in parallel with the second transmission axis of the second polarizing plate.
The method of claim 1,
The λ / 2 patterned retarder is a base defined by a first region in which the λ / 2 phase difference pattern is formed to generate a λ / 2 phase difference with respect to transmitted light, and a second region in which the λ / 2 phase difference is not generated A substrate forming a;
An alignment layer formed on the entire surface of the substrate and having polymer side chains aligned in one direction corresponding to the first region and disordered polymer side chains corresponding to the second region;
The liquid crystal layer includes a plurality of liquid crystal molecules aligned in one direction corresponding to the first region on the alignment layer, and a plurality of disordered liquid crystal molecules corresponding to the second region.
And a liquid crystal layer having a plurality of liquid crystal molecules aligned in one direction formed in the first region to form a λ / 2 phase difference pattern.
The method of claim 1,
The λ / 2 patterned retarder is a base defined by a first region in which the λ / 2 phase difference pattern is formed to generate a λ / 2 phase difference with respect to transmitted light, and a second region in which the λ / 2 phase difference is not generated A substrate forming a;
An orientation pattern having polymer side chains aligned in one direction corresponding to the first region of the substrate;
A plurality of liquid crystal molecules are formed on the entire surface of the substrate above the alignment pattern, and aligned in one direction to correspond to the first region provided with the alignment pattern, and a plurality of disordered liquid crystal molecules correspond to the second region. Liquid crystal layer
And a liquid crystal layer having a plurality of liquid crystal molecules aligned in one direction formed in the first region to form a λ / 2 phase difference pattern.
The method of claim 1,
The λ / 2 patterned retarder is a base defined by a first region in which the λ / 2 phase difference pattern is formed to generate a λ / 2 phase difference with respect to transmitted light, and a second region in which the λ / 2 phase difference is not generated A substrate forming a;
An alignment layer formed on the entire surface of the substrate and having polymer side chains aligned in one direction corresponding to the first region and disordered polymer side chains corresponding to the second region;
A partition wall of black formed at a boundary between the first and second regions over the alignment layer;
A liquid crystal pattern formed between the partitions of the black to correspond to the first region and having a plurality of liquid crystal molecules aligned in one direction
3. The system of claim 3, wherein the liquid crystal pattern having a plurality of aligned liquid crystal molecules forms a λ / 2 phase difference pattern.
The method of claim 12,
And a transparent material pattern formed of a transparent organic material corresponding to the second area between the partitions of the black.

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