KR100596695B1 - Filter for switching two and three dimensional stereo image - Google Patents

Abstract

The present invention relates to a filter for switching two-dimensional and three-dimensional stereoscopic images, comprising: a first transparent substrate; First electrodes formed in a stripe shape on at least one side surface of the upper surface of the first transparent substrate and drawn out to the first electrode terminal; Second electrodes spaced apart from the first electrodes and formed in a stripe shape in a region of the upper surface of the first transparent substrate on which the first electrodes are formed, and drawn out as a second electrode terminal independent of the first electrode terminal; ; A liquid crystal layer surrounding the first and second electrodes and filled on the first transparent substrate; A third electrode formed on the entire upper surface of the liquid crystal layer and drawn out to a third electrode terminal; A second transparent substrate formed on the third electrode; The polarizing plate is formed on the second transparent substrate.

Accordingly, the present invention can selectively switch two-dimensional and three-dimensional stereoscopic images into divided regions on a stereoscopic image display screen, thereby providing a variety of functions and realizing stereoscopic images and simultaneously distorting two-dimensional images. There is an effect that can be realized.

2D, 3D, switching, stereoscopic image, electrode

Description

Filter for switching two and three dimensional stereo image}

1 is a conceptual diagram illustrating a stereoscopic image display apparatus using a parallax barrier method according to the related art.

2A and 2B are plan views showing examples of a general mobile phone display and a computer display screen.

Figure 3 is a cross-sectional view of the configuration of the filter for switching 2D and 3D stereoscopic images according to the present invention

4A and 4B are plan views showing a state in which electrodes are divided to selectively switch two-dimensional and three-dimensional stereoscopic images according to the first embodiment of the present invention.

FIG. 5 is a plan view illustrating a state in which electrodes are formed in a filter for switching two-dimensional and three-dimensional stereoscopic images according to a first exemplary embodiment of the present invention and are merged with each other; FIG.

6A through 6D are plan views illustrating a state in which a filter for switching 2D and 3D stereoscopic images according to a first embodiment of the present invention is driven.

7 is a cross-sectional view showing the configuration of a filter for switching two-dimensional and three-dimensional images according to a second embodiment of the present invention

8 is a conceptual diagram for explaining a filter for switching two-dimensional and three-dimensional stereoscopic images according to a second embodiment of the present invention;

9 is a schematic plan view illustrating a state in which a lower electrode of a shutter is divided on a display screen according to a second embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100, 140, 210, 250: transparent substrate 110a: first electrode

110b: second electrode 120,230: liquid crystal layer

130: third electrode 150260: polarizing plate

200: shutter 220: lower electrode

240: upper electrode

300: Patterned Phase Retarder

301: polarization cell 302: transmission cell

The present invention relates to a filter for switching two-dimensional and three-dimensional stereoscopic images, and more particularly, it is possible to selectively switch two-dimensional and three-dimensional stereoscopic images into divided regions on a three-dimensional image display screen. The present invention relates to a filter for switching between two-dimensional and three-dimensional stereoscopic images that can be provided and realize a two-dimensional image that is not distorted at the same time.

In recent years, three-dimensional image technology capable of viewing various images in three dimensions has been greatly developed.

In particular, a three-dimensional image display device that allows an observer to feel a three-dimensional feeling without wearing three-dimensional glasses has been developed, and can be applied to various electronic device markets such as mobile phones, computers, and TVs, and developments are being made rapidly by companies. .

On the other hand, the reason people feel three-dimensional is because they have two eyes.

If you cover one eye and look at an object and then cover another eye, the object seems to have moved slightly.

This is called 'Binocular parallax', and stereoscopic imaging technology has been developed using it.

1 is a conceptual diagram illustrating a stereoscopic image display apparatus using a parallax barrier method according to the related art, and a parallax barrier filter 10 is installed between an observer and a display apparatus 20.

The parallax barrier filter 10 is formed by alternately forming a transparent part 10a and an opaque part 10b.

The first pixel P1 corresponding to the image signal photographed by the first camera and the second pixel P2 corresponding to the image signal photographed by the second camera are alternately displayed on the display device 20.

Here, the first and second cameras photograph one movement at different angles.

In this case, when viewed from the observer's left eye S1, the first pixel P1 is seen through the transparent portion 10a of the parallax barrier filter 10, and the second pixel P2 is the opaque portion 10b. Is obscured.

In addition, when viewed by the observer's right eye S2, the first pixel P1 is covered by the opaque portion 10a of the parallax barrier filter 10, and the second pixel P2 covers the transparent portion 10a. Seems through.

Therefore, the observer senses the image photographed at different angles with the left and right eyes S1 and S2 with the eyes to feel a three-dimensional effect.

2A and 2B are plan views illustrating an example of a general mobile phone display and a computer display screen. First, as shown in FIG. 2A, the mobile phone has a radio wave reception intensity and a battery at an upper end 51 of the display screen 50. The amount of power is displayed, a menu, an advertisement message, and the like are displayed at the bottom 53, and an image is displayed at the middle 52.

As shown in FIG. 2B, a start button, a search button, and the like are displayed on the lower portion 61 of the screen 60 of the computer display.

Here, the text and graphic images on the bottom or top of the mobile phone and the computer display may be implemented as two-dimensional image information.

 Therefore, in order to implement a stereoscopic image on a mobile phone display and a computer display, such as FIGS. 2A and 2B, when the above-described parallax barrier and a lenticular lens are mounted, two-dimensional image information of a character and a graphic image at the bottom or the top of the display is displayed. Distorted display problems occur.

In order to solve the problems described above, the present invention can selectively switch two-dimensional and three-dimensional stereoscopic images into divided regions on a stereoscopic image display screen, thereby giving a variety of functions and realizing stereoscopic images. In addition, an object of the present invention is to provide a filter for switching two-dimensional and three-dimensional stereoscopic images that can realize a two-dimensional image that is not distorted.

A preferred aspect for achieving the above objects of the present invention is a first transparent substrate;

First electrodes formed in a stripe shape on at least one side surface of the upper surface of the first transparent substrate and drawn out to the first electrode terminal;

Second electrodes spaced apart from the first electrodes and formed in a stripe shape in a region of the upper surface of the first transparent substrate on which the first electrodes are formed, and drawn out as a second electrode terminal independent of the first electrode terminal; ;

A liquid crystal layer surrounding the first and second electrodes and filled on the first transparent substrate;

A third electrode formed on the entire upper surface of the liquid crystal layer and drawn out to a third electrode terminal; A second transparent substrate formed on the third electrode;

A filter for switching two-dimensional and three-dimensional stereoscopic images comprising a polarizing plate formed on the second transparent substrate is provided.

Another preferred aspect for achieving the above objects of the present invention is a first transparent substrate;

Comprising a plurality of rectangles spaced apart from each other at a predetermined interval on the upper surface of the first transparent substrate, these rectangles are divided into two or three divided, and the rectangles of each divided region is drawn to the independent electrode terminal and ;

A liquid crystal layer surrounding the first and second electrodes and filled on the first transparent substrate;

An electrode formed on the entire upper surface of the liquid crystal layer and drawn out to a third electrode terminal; A second transparent substrate formed on the electrode above the liquid crystal layer;

A filter for switching two-dimensional and three-dimensional stereoscopic images comprising a polarizing plate formed on the second transparent substrate is provided.

Another preferred aspect for achieving the above object of the present invention, the first transparent substrate, and at least two or more regions on the first transparent substrate, each of the separated electrode terminals are separated Lower electrodes to be drawn out, the upper electrodes surrounding the lower electrodes, the upper electrode formed on the first transparent substrate, and the upper electrode formed on the liquid crystal layer and drawn out as electrode terminals independent of the electrode terminals of the lower electrodes. A shutter comprising a second transparent substrate formed on the upper electrode, and a polarizer formed on the lower part of the first transparent substrate;

A plurality of polarization cells mounted on the second transparent substrate 250 of the shutter and arranged to be spaced apart from each other in a stripe shape, and transmitting light by polarizing the light by 90 degrees; Provided are filters for switching two-dimensional and three-dimensional stereoscopic images consisting of a patterned phase retarder composed of transmitting cells for transmission.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

3 is a cross-sectional view of a filter for switching two-dimensional and three-dimensional images according to a first embodiment of the present invention, wherein the filter for switching two-dimensional and three-dimensional images according to the first embodiment of the present invention is a parallax barrier. 2D and 3D stereoscopic image switching filters include: a first transparent substrate 100; First electrodes (110a) formed in a stripe shape on at least one side region of the upper surface of the first transparent substrate (100) and drawn out to the first electrode terminals; A second spaced apart from the first electrodes 110a and formed in a stripe shape on the remaining area of the upper surface of the first transparent substrate 100 on which the first electrodes 110a are formed, and independent of the first electrode terminal Second electrodes 110b drawn out to the electrode terminals; A liquid crystal layer 120 surrounding the first and second electrodes 110a and 110b and filled on the first transparent substrate 100; A third electrode 130 formed on the entire upper surface of the liquid crystal layer 120 and drawn out to a third electrode terminal; A second transparent substrate 140 formed on the third electrode 130; The polarizing plate 150 is formed on the second transparent substrate 140.

The first and second electrodes 110a and 110b having a stripe shape means that the first and second electrodes 110a and 110b have a plurality of rectangular shapes spaced apart from each other at regular intervals. .

Alternatively, the first and second electrodes 110a and 110b are transparent electrodes such as ITO, and are formed of a plurality of rectangles spaced apart from each other by a predetermined interval on an upper surface of the first transparent substrate 100. 4A or 3B as shown in FIG. 4B, the rectangles of each divided region may be composed of electrodes drawn out as independent electrode terminals.

The first and second transparent substrates 100 and 140 may use any one selected from a transparent glass substrate, a transparent plastic substrate, a transparent film, and a transparent quartz substrate.

The first transparent substrate 100 is mounted on a stereoscopic image display displaying left and right eye images, and when power is applied to the first to third electrodes 110a, 110b and 130, the first to third electrodes Light passes through the regions 110a, 110b, and 130 formed therein.

In this case, since the first to third electrodes 110a, 110b, and 130 have a shape of a plurality of rectangles spaced apart from each other, the first to third electrodes 110a, 110b, and 130 may serve as a parallax barrier, and thus the viewer may view a three-dimensional stereoscopic image in the entire plane. It becomes possible.

Alternatively, when the light of the 2D image is transmitted to the region where the first electrode 110a is formed and the light of the 3D stereoscopic image is transmitted to the region where the second electrode 110b is formed, the first electrode 110a is transmitted. When the power is applied to the second electrode 110b and the power is applied only to the second electrode 110b, the first electrodes 110a do not act as a parallax barrier, and thus do not distort the two-dimensional image and do not distort the two-dimensional image. The light of the 2D image is transmitted to the region where the fields 110a are formed.

The light of the 3D stereoscopic image is transmitted to the region where the second electrode 110b is formed.

FIG. 5 is a plan view illustrating a state in which the electrodes of the filter for switching two-dimensional and three-dimensional stereoscopic images according to the first embodiment of the present invention are combined with a region where the electrodes are formed. That is, it may be formed in the upper region or the lower region or both the upper and lower regions.

As shown in FIG. 5, the first electrodes 110a are formed in both the upper and lower regions, so that the electrode in the upper region is defined as the A electrode, the electrode in the lower region as the C electrode, and the second electrodes 110b. ) Is defined as the B electrode in the center region of the plane, and the third electrodes 130 are formed on the entire plane of the second transparent substrate 140 described above with reference to FIG. 3 and defined as the S electrode.

The A and C electrodes correspond to the upper and lower regions of the display, and the B electrode corresponds to the central region.

The A electrode, the B electrode, the C electrode, and the S electrode are respectively connected to independent electrode terminals.

The liquid crystal layer is interposed between the first and second electrodes 110a and 110b and the third electrodes 130 such that the two are integrated.

6A to 6D are planar conceptual views illustrating a state in which a filter for switching two-dimensional and three-dimensional stereoscopic images according to a first embodiment of the present invention is driven, and all electrode terminals A, B, As shown in FIG. 6A as C and S), when power is supplied, the 3D stereoscopic image can be viewed in all regions of the display.

6B, when the power supply is cut off from the A and C electrode terminals, and power is supplied only to the S and B electrode terminals, the area where the A and C electrodes exist, that is, the upper and lower regions of the display. The 2D image can be viewed, and the 3D stereoscopic image can be viewed in the center area of the display.

In FIG. 6C, when power is supplied to the A electrode terminal and power is supplied to the S, B and C electrode terminals, a two-dimensional image can be viewed in the region where the A electrode exists, that is, the upper region of the display. In the center region and the lower region of the display, a 3D stereoscopic image can be viewed.

Similarly, in FIG. 6D, when power is supplied to the C electrode terminal and power is supplied to the S, A, and B electrode terminals, the 2D image is viewed in the region where the C electrode exists, that is, the lower region of the display. The 3D stereoscopic image can be viewed in the central region and the upper region of the display.

As described above, the two-dimensional and three-dimensional stereoscopic image switching filter of the present invention allows the user to selectively use and view two-dimensional and three-dimensional stereoscopic images in a divided area on the display screen, thereby providing a variety of functions. Can be given.

In addition, when the two-dimensional image is displayed, switching to the two-dimensional and three-dimensional stereoscopic image switching filter of the present invention, it is possible to see the two-dimensional image without distortion.

7 is a cross-sectional view of a filter for switching two-dimensional and three-dimensional images according to a second embodiment of the present invention, wherein the filter for switching two-dimensional and three-dimensional images according to a second embodiment of the present invention has a patterned phase It uses a patterned phase retarder method.

That is, the filter for switching 2D and 3D stereoscopic images is separated into a first transparent substrate 210 and at least two or more regions on the first transparent substrate 210, and each separated region is an independent electrode terminal. A lower liquid crystal layer 230 formed around the lower electrodes 220 and the lower electrodes 220 and formed on the first transparent substrate 210 and formed on the liquid crystal layer 230. An upper electrode 240 which is drawn out as an electrode terminal independent of the electrode terminals of the lower electrodes 220, a second transparent substrate 250 formed on the upper electrode 240, and the first transparent substrate 210. A shutter 200 including a polarizer 260 formed at a lower portion thereof; A plurality of polarizing cells 301 mounted on an upper portion of the second transparent substrate 250 of the shutter 200 and arranged to be spaced apart from each other in a stripe shape, and transmitting light by polarizing light by 90 degrees; It is composed of a patterned phase retarder 300 consisting of transmission cells 302 arranged between 301 and transmitting light.

The filter for switching 2D and 3D stereoscopic images according to the second exemplary embodiment of the present invention is equipped with a stereoscopic image display in which left and right eye images are displayed on the patterned phase retarder 300.

When the left and right eye stereoscopic images are displayed on the stereoscopic image display, the left and right eye images are polarized by 90 degrees in the plurality of polarization cells 301 of the patterned phase retarder 300, and the transmission cells 302 It transmits left and right eye images.

That is, as shown in FIG. 8, when the shutter 200 is turned on, the left eye pixel PL of the stereoscopic image display 500 is the first transmission cell 301a of the patterned phase retarder 300. It is seen through the observer's left eye (S1), but the right eye (S2) is 90 degrees polarized to be invisible.

Therefore, the patterned phase retarder 300 and the shutter 200 are combined so that a 90 degree polarized stereoscopic image is transmitted and blocked according to the observer's viewing angle (ie, left and right eye viewing angles). (Black barrier) will be formed.

The right eye pixel PL of the stereoscopic image display 500 is visible to the observer's right eye S2 through the second transmission cell 301b of the patterned phase retarder 300, but the left eye S1 is not visible. As it is 90 degrees polarized, it becomes invisible.

Accordingly, the filter for switching 2D and 3D stereoscopic images according to the second exemplary embodiment of the present invention may realize a 3D image when power is applied to the lower and upper electrodes of the shutter 200.

Meanwhile, the lower electrodes 220 of the shutter 200 are divided into at least two regions, and each separated region is drawn out to independent electrode terminals. As shown in FIG. 9, the display screen is divided into three portions. When the lower electrode is divided into three regions 220a, 220b, and 220c, a three-dimensional image may be implemented as a center region and a two-dimensional image may be implemented as a left and a right region.

In more detail, the lower electrode 220b of the center area is turned on and the lower electrodes 220a and 220c of the left and right areas are turned off. Likewise, stereoscopic images may be implemented.

In addition, the left and right eye images, which are polarized 90 degrees by the polarization cells 301 of the patterned phase retarder 300, to the left and right regions of the display screen by the shutter 200 to which power is not applied. It is converted to the image displayed on the initial display, and finally, two-dimensional images can be viewed in the left and right regions.

As a result, the switching operation for selectively supplying (on) or blocking (off) power to the lower electrode of the divided region also in the two-dimensional and three-dimensional stereoscopic image switching filter of the second embodiment of the present invention. By performing the two-dimensional image that is not distorted can be seen.

As described above, the present invention can selectively switch between two-dimensional and three-dimensional stereoscopic images into divided regions on a stereoscopic image display screen, thereby providing a variety of functions and not distorting at the same time to implement stereoscopic images. There is an effect that can implement a two-dimensional image.

Although the invention has been described in detail only with respect to specific examples, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the invention, and such modifications and variations belong to the appended claims.

Claims (5)

A first transparent substrate; First electrodes formed in a stripe shape on at least one side surface of the upper surface of the first transparent substrate and drawn out to the first electrode terminal; Second electrodes spaced apart from the first electrodes and formed in a stripe shape in a region of the upper surface of the first transparent substrate on which the first electrodes are formed, and drawn out as a second electrode terminal independent of the first electrode terminal; ; A liquid crystal layer surrounding the first and second electrodes and filled on the first transparent substrate; A third electrode formed on the entire upper surface of the liquid crystal layer and drawn out to a third electrode terminal; A second transparent substrate formed on the third electrode; Filter for switching two-dimensional and three-dimensional stereoscopic image consisting of a polarizing plate formed on the second transparent substrate. A first transparent substrate; Comprising a plurality of rectangles spaced apart from each other at regular intervals on the upper surface of the first transparent substrate, these rectangles are divided into two or three, and the rectangles of each divided region is drawn out as an independent electrode terminal and ; A liquid crystal layer surrounding the first and second electrodes and filled on the first transparent substrate; An electrode formed on the entire upper surface of the liquid crystal layer and drawn out to a third electrode terminal; A second transparent substrate formed on the electrode above the liquid crystal layer; Filter for switching two-dimensional and three-dimensional stereoscopic image consisting of a polarizing plate formed on the second transparent substrate. The method according to claim 1 or 2, Each of the first and second transparent substrates, Filter for switching two-dimensional and three-dimensional stereoscopic image, characterized in that any one selected from a transparent glass substrate, a transparent plastic substrate, a transparent film and a transparent Quartz substrate. A first transparent substrate, lower electrodes separated into at least two regions on the first transparent substrate, and each separated region is led to independent electrode terminals, and formed on the first transparent substrate to surround the lower electrodes. A liquid crystal layer, an upper electrode formed on the liquid crystal layer and drawn out to electrode terminals independent of the electrode terminals of the lower electrodes, a second transparent substrate formed on the upper electrode, and a polarizing plate formed on the lower portion of the first transparent substrate. Shutter made of; A plurality of polarization cells mounted on the second transparent substrate of the shutter and arranged to be spaced apart from each other in a stripe shape, and transmitting light by polarizing the light by 90 degrees, and arranged between the polarization cells to transmit light; A filter for switching two-dimensional and three-dimensional images consisting of a patterned phase retarder composed of transmission cells. The method of claim 4, wherein Each of the first and second transparent substrates, Filter for switching two-dimensional and three-dimensional stereoscopic image, characterized in that any one selected from a transparent glass substrate, a transparent plastic substrate, a transparent film and a transparent Quartz substrate.

Images