KR101113066B1 - stereoscopic 3 dimension display apparatus and parallax barrier liquid crystal display panel - Google Patents

stereoscopic 3 dimension display apparatus and parallax barrier liquid crystal display panel Download PDF

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KR101113066B1
KR101113066B1 KR1020050044408A KR20050044408A KR101113066B1 KR 101113066 B1 KR101113066 B1 KR 101113066B1 KR 1020050044408 A KR1020050044408 A KR 1020050044408A KR 20050044408 A KR20050044408 A KR 20050044408A KR 101113066 B1 KR101113066 B1 KR 101113066B1
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liquid crystal
crystal panel
electrode
transparent
substrate
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KR1020050044408A
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Korean (ko)
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KR20060124849A (en
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강훈
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엘지디스플레이 주식회사
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B30/00Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528Polarisers
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell

Abstract

The present invention can realize stable 3D image in both 2D (3 dimension) and 3D (3 dimension) display switching as well as landscape and portrait display by rotation of observer or display device. A parallax barrier liquid crystal panel and a stereoscopic image display apparatus using the same.
Specifically, the present invention includes transparent first and second substrates having one surface facing each other; A plurality of transparent first electrodes formed on one surface of the first substrate and arranged in a stripe shape toward a first direction; A plurality of transparent second electrodes formed on one surface of the second substrate and arranged in a stripe shape toward a second direction crossing the first direction; Provided is a parallax barrier liquid crystal panel including a liquid crystal layer interposed between the first and second substrates.
As a result, the stereoscopic image display device according to the present invention can be converted into 2D and 3D modes by including the above-described Paralex liquid crystal panel, and in both horizontal display and vertical display by rotation of the observer or display device. There is an advantage that can implement a stable 3D image.

Description

Pararex barrier liquid crystal panel and stereoscopic display device using the same {stereoscopic 3 dimension display apparatus and parallax barrier liquid crystal display panel}

1 is a cross-sectional view of a conventional stereoscopic image display device.

2A and 2B are cross-sectional views illustrating 2D and 3D display states of a general stereoscopic image display device, respectively.

3 is a cross-sectional view of a stereoscopic image display device according to the present invention.

Figure 4 is an exploded perspective view of the main liquid crystal panel according to the present invention.

5 is an exploded perspective view of a parallax barrier liquid crystal panel according to a first embodiment of the present invention.

6A and 6B are plan views of third and fourth substrates of the Paralex barrier liquid crystal panel according to the first embodiment of the present invention, respectively.

7 and 8 are exploded perspective views of the Paralex barrier liquid crystal panel according to the second and third embodiments of the present invention, respectively.

<Description of the symbols for the main parts of the drawings>

160: third substrate 162: first electrode

164: first insulating layer 166: second electrode

170: fourth substrate 172: third electrode

174: second insulating layer 176: fourth electrode

180: liquid crystal layer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parallax barrier liquid crystal display panel and a stereoscopic 3 dimension display apparatus using the same. More specifically, the present invention relates to a 2D (3D) and 3D (3D) mode. Parallax barrier liquid crystal panel and stereoscopic image display that can realize stable 3D image in both landscape type and portrait type by rotation of observer or display device. Relates to a device.

In general, three-dimensional image representing three-dimensional image is based on the principle of stereo vision through two eyes, binocular disparity due to the parallax of two eyes, that is, the distance between two eyes that are about 65mm apart is the most important factor of three-dimensional feeling This can be called. In other words, when the left and right eyes of the human body each see 2D images associated with each other, when these two images are delivered to the brain through the retina, the brain fuses them together to reproduce the depth and reality of the original 3D image. It is called stereography.

In addition, several techniques for displaying three-dimensional stereoscopic images on a two-dimensional screen using such stereography have been introduced. Among them, a stereo image for left and right eyes can be viewed separately. The Parallax barrier type stereoscopic image display device which realizes a 3D image is most widely used.

The 3D stereoscopic display principle of a general Pararex barrier type stereoscopic image display device is to superimpose the stereographer's stereograph by superimposing the slit-shaped openings arranged vertically with respect to the observer in a planar image in which left and right eye image information is displayed. It's a way to make it feel three-dimensional.

To this end, a main display device for displaying a planar image and a separate Paralex barrier forming a slit-shaped opening are required. FIG. 1 is a schematic cross-sectional view showing a stereoscopic image display device of a conventional Paralex barrier type. A case where a liquid crystal panel 10 is used as a display device is shown.

In this case, the liquid crystal panel 10 is alternately formed with a left eye pixel L for displaying left eye image information and a right eye pixel R for displaying right eye image information, and a backlight for supplying light to the rear thereof. 20) is provided. In addition, the Parallax barrier 30 is positioned between the liquid crystal panel 10 and the observer 40 or between the liquid crystal panel 10 and the backlight 20 to transmit and block light for each position. Slits 32 and barriers 34 that selectively pass light from pixels L and R, respectively, exist in a stripe shape toward the viewer in the longitudinal direction.

Accordingly, the light L1 passing through the left eye pixel L of the liquid crystal panel 10 among the light emitted from the backlight 20 passes through the slit 32 of the parallax barrier 30 to the left eye of the observer 40. When the light R1 passes through the right eye pixel R of the liquid crystal panel 10, the light R1 reaches the right eye of the observer 40 through the slit 32 of the parallax barrier 30. In addition, there is sufficient disparity information enough to be detected by humans in the image displayed through the left and right pixels L and R, so that the observer 40 recognizes the 3D stereoscopic image. do.

On the other hand, as described above is the most basic paralex barrier method, the use range is limited to 3D only as the slit 32 and the barrier 34 use the permanently fixed Paralex barrier 30.

However, when viewing a stereoscopic image converted to 3D by stereography due to binocular disparity for a long time, the viewer may feel nausea or fatigue, and accordingly, the conversion between the 2D mode displaying the planar image and the 3D mode displaying the stereoscopic image This possible stereoscopic image display device has been introduced.

This is simply a parallax barrier with a liquid crystal panel. When the liquid crystal panel for this function is called a paralex barrier liquid crystal panel, it does not work in 2D mode and transmits light across the entire surface, but transmits light in 3D mode. The transmission area of the slit to transmit and the blocking area of the barrier to block light are shown in a stripe form.

2A and 2B are schematic cross-sectional views of a stereoscopic image display apparatus using a general Pararex barrier liquid crystal panel 70, and show a 2D mode and a 3D mode, respectively.

As shown, a stereoscopic image display apparatus using a general Paralex barrier liquid crystal panel 70 basically includes a backlight 50 and a main liquid crystal panel 60 displaying a planar image by using light emitted therefrom. The parallax barrier liquid crystal panel 70 is interposed between them.

In this case, the main liquid crystal panel 60 includes first and second substrates 64 and 66 bonded to each other with the first liquid crystal layer 62 interposed therebetween, similarly to a general active matrix type. Although not clearly shown in the drawings, a plurality of pixels are arranged in a matrix manner between these substrates 64 and 66. Each pixel includes a transparent pixel electrode of the first substrate 64 and a transparent common electrode of the second substrate 66 which face each other with a liquid crystal interposed therebetween. The film signal voltage is selectively applied by the film transistor (TFT).

Therefore, when the image signal voltage is applied to the pixel electrode of the pixel selected by the switching operation of the thin film transistor, an electric field is formed between the pixel electrode and the common electrode of the pixel. As a result, liquid crystal molecules having optical anisotropy and polarization are driven to transmit the transmittance. Since the light emitted from the backlight 50 passes through the main liquid crystal panel 60, the difference in transmittance for each pixel is expressed to the outside to display various images.

In addition, the third and fourth substrates 74, which are bonded to each other with the second liquid crystal layer 72 interposed between the backlight 50 and the main liquid crystal panel 60, also have a general Paralex barrier liquid crystal panel 70 interposed therebetween. Unlike the main liquid crystal panel 60 described above, a transparent first electrode 76 having a simple stripe shape is formed on the inner surface of the third substrate 74 and the inner surface of the fourth substrate 78 is not divided into pixels. The transparent second electrode 80 in the form of a plate is provided. In addition, the first to third polarizing plates 82, 84, and 86 may be formed on the outer surface of the main liquid crystal panel 60, between the main liquid crystal panel 60 and the Paralex barrier liquid crystal panel 70, and between the Paralex barrier liquid crystal panel and the backlight. Attached.

In this case, the first and second electrodes 76 and 80 of the Parallax barrier liquid crystal panel 70 may be driven only in the 3D mode, for example, on the premise that the second liquid crystal layer 72 is twisted nematic. Voltage and common voltage are applied respectively.

Therefore, in the 2D mode of FIG. 2A where no voltage is applied to the first and second electrodes 76 and 80 electrodes of the Paralex barrier liquid crystal panel 70, the Paralex barrier liquid crystal panel 70 is normally white. ) To simply transmit the light emitted from the backlight 50 to the viewer, and as a result, the observer views a planar image of the main liquid crystal panel 60.

On the other hand, in the 3D mode of FIG. 2B in which the liquid crystal driving voltage and the common voltage are respectively applied to the first and second electrodes 76 and 80, only the liquid crystal placed between the first and second electrodes 76 and 80 is driven. The corresponding part displays black and the other part displays white, and thus acts as a barrier and a slit arranged vertically with respect to an observer so that the image of the main liquid crystal panel 60 can be recognized in three dimensions.

Accordingly, the 2D and 3D modes can be switched by the on / off operation of the Paralex barrier liquid crystal panel 80 and, strictly, the first electrode 76.

Meanwhile, in line with the rapidly evolving informatization era, the utilization of the display device also appears in various ways. As an example, one screen can be rotated vertically or horizontally so that it can be appropriately used for each purpose. One product was introduced, which is currently used for display screens and monitors for mobile phones.

That is, conventional display screens have been fixed so as to display only a landscape image having a width in a horizontal direction larger than a height in a vertical direction or a portrait type in the opposite direction, but recently one display screen has been fixed. By displaying a horizontal image or a vertical image to rotate the observer or the display screen as needed, the horizontal image can be used for watching movies, and the vertical image is to be utilized for the task of displaying a lot of information.

However, the method of providing the horizontal image and the vertical image by rotating the display screen is not considered to be suitable for the 3D stereoscopic display of the Pararex barrier type because the binocular disparity of the left and right eyes spaced apart in the horizontal direction. In the parallax barrier method, the arrangement direction of the slit and barrier is limited only to the vertical direction. As a result, the arrangement direction of the slit and barrier also changes horizontally due to the rotation of the display screen. .

Accordingly, the present invention has been made to solve the above problems, and is stable in both horizontal display and vertical display by rotation of an observer or display device as well as switching between 2D and 3D modes. The purpose of the present invention is to present a concrete strategy for realizing a 3D image.

In order to achieve the above object, the present invention includes a transparent first and second substrates facing each other; A plurality of transparent first electrodes formed on one surface of the first substrate and arranged in a stripe shape toward a first direction; A plurality of transparent second electrodes formed on one surface of the second substrate and arranged in a stripe shape toward a second direction crossing the first direction; Provided is a parallax barrier liquid crystal panel including a liquid crystal layer interposed between the first and second substrates.

A first insulating film covering the first electrode; A plurality of transparent third electrodes formed on the first insulating film and arranged in a stripe shape to cross the first electrode toward the first direction; A second insulating film covering the second electrode; And a plurality of transparent fourth electrodes formed on the second insulating film and arranged in a stripe shape to cross the second electrode toward the second direction, or to cover the first electrode. An insulating film; A transparent third electrode having a flat plate shape formed on the first insulating film; A second insulating film covering the second electrode; It further comprises a transparent fourth electrode in the form of a flat plate formed on the second insulating film.

In another aspect, the present invention and the transparent first and second substrates facing each other; A plurality of transparent first electrodes formed on one surface of the first substrate and arranged in a stripe shape toward a first direction; A first insulating film covering the first electrode; A plurality of transparent second electrodes formed on the first insulating film and arranged in a stripe shape toward a second direction crossing the first direction; A plate-shaped transparent third electrode formed on one surface of the second substrate; Provided is a parallax barrier liquid crystal panel including a liquid crystal layer interposed between the first and second substrates.

In addition, the present invention is a three-dimensional image display device using the above-mentioned Paralex barrier liquid crystal panel, the main liquid crystal panel for displaying a planar image; Provided is a three-dimensional image display device including a backlight provided on the back of the main liquid crystal panel, wherein the main liquid crystal panel is characterized in that the horizontal display and the vertical display, the main liquid crystal panel, the transparent third facing each other And a fourth substrate; A second liquid crystal layer interposed between the third and fourth substrates; And a pixel electrode and a common electrode for driving the second liquid crystal layer.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

At this time, the present invention can be divided into several embodiments according to the specific configuration, so that each of them are described separately, for convenience, prior to the description of the common parts in the first embodiment, and focus on the differences that are different from the other embodiments in this embodiment for convenience. It is emphasized that the description is avoided.

First embodiment

3 is a cross-sectional view of a stereoscopic image display device according to a first embodiment of the present invention, which includes a main liquid crystal panel 100 for displaying a planar image and a parallax barrier liquid crystal panel 150 having a rear surface thereof; The Parallax barrier liquid crystal panel 150 includes a backlight 200 for supplying light from the rear surface.

At this time, the outer surface of the parallax barrier liquid crystal panel 150 facing the backlight 200, between the main liquid crystal panel 100 and the parallax barrier liquid crystal panel 150, and the outer surface of the main liquid crystal panel 100 facing the observer are respectively formed. The first to third polarizers 192, 194, 196 may be interposed, and the positions of the main liquid crystal panel 100 and the Paralex barrier liquid crystal panel 150 may be interchanged depending on the purpose.

In this case, the main liquid crystal panel 100 may have the same structure as a general active matrix liquid crystal panel used in a notebook computer, a TV, or various display devices. An exploded perspective view of an example thereof is illustrated in FIG. 4.

As can be seen, the main liquid crystal panel 100 of the stereoscopic image display device according to the present invention includes first and second substrates 110 and 140 bonded to each other with the first liquid crystal layer 130 interposed therebetween. The first substrate 110 is made of a transparent material such as glass, and on the inner surface of the substrate 110, a plurality of gate lines 114 and data lines 116 intersect with each other to define the matrix P in the vertical and horizontal directions. The thin film transistor 120 is provided at the intersection of the gate line 114 and the data line 116 to be connected one-to-one with the transparent pixel electrode 122 mounted on each pixel P.

In addition, the inner surface of the second substrate 140 made of a transparent material such as glass covers non-display elements such as the gate wiring 114, the data wiring 116, and the thin film transistor 120 of the first substrate 110. A black matrix 146 that forms a lattice-shaped opening in a matrix so as to expose only each pixel electrode 122, and R, G, and B color filters 144a, 144b, and 144c filled in each of the openings; Transparent common electrodes 148 are provided to cover them. Although not clearly shown in the drawings, an alignment layer may be disposed on the inner surfaces of the first and second substrates 110 and 140 in contact with the first liquid crystal layer 130 to determine the alignment direction of the liquid crystal molecules, respectively.

Accordingly, the main liquid crystal panel 100 having the above-described structure controls the arrangement direction of the liquid crystal molecules by the electrical operation between the pixel electrode 122 and the common electrode 148 so as to show a difference in transmittance, and the backlight (200 in FIG. 3). The difference between the transmittances of the pixels P and the color combinations of the R, G, and B color filters 144a, 144b, and 144c are reflected on the light emitted from the light source to display planar images of various colors.

In addition, the main liquid crystal panel 100 of the stereoscopic image display apparatus according to the present invention is capable of horizontal display and vertical display by rotation.

Returning to FIG. 3 again, the Parallax barrier liquid crystal panel 150 according to the present invention switches the planar image of the main liquid crystal panel 100 to the 2D or 3D mode according to the user's selection, and particularly to the 3D mode. In the case of the horizontal display or the vertical display, the slits and the barriers facing the viewer in the vertical direction are implemented, and the transparent third and fourth substrates such as glass bonded to each other with the second liquid crystal layer 180 interposed therebetween ( 160,170).

In addition, a stripe-shaped transparent first electrode 162 facing the first direction is formed on an inner surface of the second third substrate 160, and a first insulating layer 164 is covered thereon, and the first insulating layer is formed on the upper surface thereof. Similarly to the first electrode 162, an upper portion of the second electrode 162 is formed in the form of a transparent second electrode 166 arranged in a first direction but staggered from each other.

In addition, the inner surface of the fourth substrate 170 facing the third substrate 160 with the second liquid crystal layer 180 interposed therebetween to face the first and second electrodes 162 and 166 perpendicularly to the second direction. The stripe-shaped transparent third electrode 172 is formed, and the second insulating layer is covered, and the second insulating layer faces the second direction similarly to the third electrode 172 but alternately disposed thereon. The stripe-shaped transparent fourth electrode 176 is formed.

At this time, the parallax barrier liquid crystal panel according to the first embodiment of the present invention to help understand the structure, the direction, and the arrangement relationship of the first to fourth electrodes 162, 164, 172, and 176 of the above-mentioned parallax barrier liquid crystal panel 150. 150) only the decomposition is shown in FIG. 5, which will be easily understood when compared with FIGS. 3 and 4.

On the other hand, the operation state of each mode of the stereoscopic image display device according to the first embodiment of the present invention, first, in the 2D mode voltage anywhere in the first to fourth electrodes (162, 166, 172, 174) of the Paralex barrier liquid crystal panel 150 This is not applied, and thus, when the second liquid crystal layer 180 is in the TN mode, for example, normal white is displayed to pass the light emitted from the backlight 200 without any processing.

As a result, the display image of the main liquid crystal panel 100 shows a 2D image to the viewer.

Next, in the 3D mode, the display may be divided into a horizontal display and a vertical display. For example, when the horizontal display is larger than the height of the upper and lower sides, the third and fourth electrodes 172 and 176 facing in the horizontal direction with respect to the viewer are included. The common voltage is applied, and the liquid crystal driving voltage is applied to one of the first or second electrodes 162 and 166 facing the observer, and optionally to the second electrode 166. In this case, a common voltage may be applied to the other one of the first and second electrodes 162 and 166 to which the liquid crystal driving voltage is not applied, and optionally to the first electrode 162.

As a result, the second liquid crystal layer 180 of the parallax barrier liquid crystal panel 150 is driven only at a portion corresponding to the second electrode 166, and thus is connected to the second electrode 166 arranged longitudinally with respect to the viewer. The slit corresponding to the corresponding barrier and the first electrode 162 is displayed in a stripe form.

Therefore, the observer can observe the 3D image of the horizontal display.

On the other hand, in the 3D mode of the vertical display, the Paralex barrier liquid crystal panel 150 according to the present invention together with the main liquid crystal panel 100 is also rotated by 90 ° or 270 °, and thus the first and second parts are reversed. Electrodes 162 and 166 are arranged horizontally with respect to the observer, and third and fourth electrodes 172 and 176 are arranged vertically.

In this case, for the 3D implementation, a common voltage is applied to the first and second electrodes 162 and 166 and a liquid crystal driving voltage is applied to any one of the third and fourth electrodes 172 and 176, and optionally to the fourth electrode 176. do. In this case, the common voltage may be applied to the other one of the third and fourth electrodes 172 and 176 where the liquid crystal driving voltage is not applied, and optionally to the third electrode 172.

Accordingly, the second liquid crystal layer 180 is driven only at a portion corresponding to the fourth electrode 176 to which the liquid crystal driving voltage is applied, and as a result, a barrier appears along the fourth electrode 176 that is vertical to the viewer. Parts corresponding to the third third electrode 172 are indicated by slits. Therefore, the observer can observe a vertical 3D image.

6A and 6B are respectively plan views of the third and fourth substrates 160 and 170 of the Paralex barrier liquid crystal panel 150 according to the first embodiment of the present invention, respectively. As shown in FIG. 6A, the first and second insulating layers are omitted for convenience. As shown in FIG. 6A, the first to second insulating layers are arranged along the edge non-display area from the electrode pad 202 provided on one side of the inner surface of the third substrate 160. Fourth drawing wirings 212, 214, 216 and 218 are formed, and the first and second drawing wirings 212 and 214 are directly connected to the first and second electrodes 162 and 164 of the third substrate 160, respectively.

The third and fourth lead-out wirings 216 and 218 are connected to the first and second auxiliary lead-out wirings 222 and 224 formed along the edge non-display area of the inner surface of the fourth substrate 170 shown in 6a through the Ag dots 220. The first and second auxiliary drawing wirings 222 and 224 are directly connected to the third and fourth electrodes 172 and 176 of the fourth substrate, respectively.

Accordingly, voltages for horizontal display and vertical display in 2D, 3D, and 3D modes may be transmitted to the first to fourth electrodes 162, 166, 172, and 176 using the electrode pad 202.

Meanwhile, in the above description, the positions of the first and second electrodes 162 and 166 and the third and fourth electrodes 172 and 176 are independent of each other, and the first and second electrodes 162 and 166 may be the fourth substrate ( It is also possible for the third and fourth electrodes 172 and 176 to be positioned at 170 and present on the third substrate 160.

Second Embodiment

In the stereoscopic image display apparatus according to the second exemplary embodiment of the present invention, the above-described contents may be commonly applied except for the parallax barrier liquid crystal panel, and the description thereof is a decomposition of the parallax barrier liquid crystal panel according to the present exemplary embodiment. See FIG. 6, which is a perspective view.

In this case, the same reference numerals are given to the parts that play the same role.

As can be seen, the parallax barrier liquid crystal panel 150 according to the second embodiment of the present invention has a planar transparent fifth electrode 162a formed on the inner surface of the third substrate 160 and has a third insulating layer thereon. 164a is covered, and a plurality of sixth electrodes 166a arranged in a stripe shape toward the first direction is formed on the third insulating layer 164a.

In addition, a planar seventh electrode 172a is formed on an inner surface of the fourth substrate 170, and a fourth insulating layer 174a is covered, and a sixth electrode 166a is formed on an outer surface of the fourth insulating layer 174a. ), A plurality of eighth electrodes 176a arranged in a stripe shape toward the second direction intersecting the?

Looking at the operating state of the parallax barrier liquid crystal panel according to the second embodiment of the present invention, the voltage is not applied anywhere in the fifth to eighth electrodes (162a, 166a, 172a, 176a) in the 2D mode to show normal white. .

In the horizontal display of the 3D mode, the liquid crystal driving voltage is applied only to the six electrodes 166a arranged in the vertical direction with respect to the observer, and the common voltage is applied to the seventh electrode 172a. In this case, the fifth electrode 162a is used. The common voltage may be applied to the eighth electrode 176a. As a result, the vertical barriers and slits are implemented for the observer, so that the 3D image in the horizontal display can be viewed.

Next, in the vertical display of the 3D mode, the liquid crystal driving voltage is applied only to the eighth electrode 176a arranged in the vertical direction with respect to the observer, and the common voltage is applied to the fifth electrode 162a. In this case, a common voltage may be applied to the sixth electrode 166a and the seventh electrode 172a, and as a result, a barrier and a slit facing in the vertical direction are displayed to the observer to provide a 3D image in the vertical display.

In this case, the positions of the fifth electrode 162a, the sixth electrode 166a, the seventh electrode 172a, and the eighth electrode 172b may be varied with each other. The fourth substrate 170 and the seventh and eighth electrodes 172a and 176a may be formed on the third substrate 160.

Third Embodiment

Finally, an exploded perspective view of the parallax barrier liquid crystal panel 150 according to the third embodiment of the present invention is shown in FIG. 8. In this case, only the planar ninth electrode 168 is formed on the inner surface of the third substrate 160. exist.

In addition, a tenth electrode 172b arranged in a stripe shape toward the first direction is formed on an inner surface of the fourth substrate 170, and is perpendicular to the tenth electrode 172b with the fifth insulating layer 174b interposed therebetween. The plurality of eleventh electrodes 176b are arranged in a stripe shape toward the crossing second direction.

Accordingly, no voltage is applied to the ninth to eleventh electrodes in the 2D mode to provide a planar image. In the horizontal display in the 3D mode, a common voltage is applied to the ninth electrode 168 and the liquid crystal driving voltage is applied to the eleventh electrode 176b. Is applied to display the barrier and the slit facing in the longitudinal direction to the observer. In the vertical display in the 3D mode, the common voltage is commonly applied to the ninth electrode 168, but the liquid crystal driving voltage is applied to the tenth electrode 172b. To display the still vertically facing barriers and slits for the viewer.

Therefore, 3D image is provided in both horizontal and vertical display in 3D mode.

The stereoscopic image display device according to the present invention can be converted into 2D and 3D modes according to the parallax liquid crystal panel of the above-described configuration, and can also be used for landscape display and portrait display by rotation of an observer or display device. portrait type), there is an advantage in that a stable 3D image can be realized.

Claims (7)

  1. delete
  2. delete
  3. A transparent first and second substrate having one surface facing each other;
    A transparent first electrode having a flat plate formed on one surface of the first substrate;
    A first insulating film covering the first electrode;
    A plurality of transparent second electrodes formed on the first insulating film and arranged in a stripe shape toward the first direction;
    A transparent third electrode having a flat plate formed on one surface of the second substrate;
    A second insulating film covering the third electrode;
    A plurality of transparent fourth electrodes formed on the second insulating film and arranged in a stripe shape toward a second direction crossing the first direction;
    Liquid crystal layer interposed between the first and second substrate
    Parallax barrier liquid crystal panel comprising a.
  4. A transparent first and second substrate having one surface facing each other;
    A plurality of transparent first electrodes formed on one surface of the first substrate and arranged in a stripe shape toward a first direction;
    A first insulating film covering the first electrode;
    A plurality of transparent second electrodes formed on the first insulating film and arranged in a stripe shape toward a second direction crossing the first direction;
    A plate-shaped transparent third electrode formed on one surface of the second substrate;
    Liquid crystal layer interposed between the first and second substrate
    Parallax barrier liquid crystal panel comprising a.
  5. A stereoscopic image display apparatus using the parallax barrier liquid crystal panel according to claim 3 or 4,
    A main liquid crystal panel displaying a planar image;
    Back light provided on the back of the main liquid crystal panel
    Stereoscopic display device comprising a.
  6. The method of claim 5,
    The main liquid crystal panel is a three-dimensional image display device capable of horizontal display and vertical display.
  7. The method of claim 5,
    The main liquid crystal panel,
    Transparent third and fourth substrates opposed to each other;
    A second liquid crystal layer interposed between the third and fourth substrates;
    And a pixel electrode and a common electrode for driving the second liquid crystal layer.
KR1020050044408A 2005-05-26 2005-05-26 stereoscopic 3 dimension display apparatus and parallax barrier liquid crystal display panel KR101113066B1 (en)

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