JP2003075773A - Plate type filter, display device, and method and device for positioning the filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device which securely outputs an image accompanied by parallax information even when a divided-wavelength plate filter which needs to be positioned with precision is fitted. SOLUTION: The display device is equipped with a filter part which is overlaid on an image display part for displaying image information in a 1st section and a 2nd section, and a filter frame body which is arranged integrally around the filter part. The filter part is equipped with a 1st wavelength plate which rotates the polarization direction of the image information from the 1st section to a direction different from the polarization direction of the image information from the 2nd section and which is disposed in an area corresponding to the 1st section of the image display part. The filter frame body has a positioning mark formed by a 2nd wavelength plate rotating the polarization direction. Speedy positioning processing is thus made possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device capable of stereoscopically viewing an image accompanied by parallax information, or a double screen display capable of displaying multiple screens from one display surface, and further, The present invention relates to a plate filter used for such a display device, a filter alignment method, and a filter alignment device. Particularly, in order to display an optimal stereoscopic image or double-screen image, a plate filter is used. The present invention relates to a method of adjusting a filter position and an adjusting device for highly accurate attachment.

2. Description of the Related Art Conventionally, various attempts have been made for a technique for representing a three-dimensional image, and photographs,
Display methods for three-dimensional images have been studied and put to practical use in many fields such as movies and television. The three-dimensional image display method is roughly classified into a glasses-type and a glasses-free type, and in both methods, an image with binocular parallax can be input to the left and right eyes of an observer and viewed as a stereoscopic image. Is. Typical examples of the spectacle type include so-called red and blue spectacles anaglyph method and polarized spectacle method. Color separation methods such as anaglyphs have many quality disadvantages such as difficulty in color expression and deterioration of the visual field.
Further, the polarizing glasses method has a problem that it is generally necessary to use two projection devices, but in recent years, a method of enabling stereoscopic display with one direct-viewing type display device has been proposed.

FIG. 16 shows an outline of a stereoscopic image display device using the polarized glasses method. Stereoscopic image display device 200
Has a structure including a liquid crystal panel unit 201 and a divided wavelength plate filter 202 attached to the liquid crystal panel unit 201. The liquid crystal panel unit 201 includes a pair of transparent supporting bases 204 and 20 between a pair of polarizing plates 203 and 207.
6 is formed, and a pixel liquid crystal portion 205 in which RGB pixels are formed is provided therebetween. This liquid crystal panel section 20
The divided wavelength plate filter 202 is provided on the surface of No. 1 and has a structure in which, for example, every other line, the divided wavelength plate 208 is arranged on one surface of the transparent protective substrate 209. The split wave plate filter 202 is a micropole (μ-Po
It is also called l) or micropolarizer.

A stereoscopic image display device 200 having such a structure
Rotates the direction of the linearly polarized light emitted from the liquid crystal panel unit 201, thereby converting the linearly polarized light from the even line and the odd line of the display screen into those orthogonal to each other. That is, the linearly polarized light from the liquid crystal panel is emitted from the even-numbered line as it is, and is converted to the linearly polarized light orthogonal to the odd-numbered line by the action of the division wavelength plate 208. By observing the light of this display device with the glasses 210 having polarization directions orthogonal to each other, the light of the image for the right eye is incident on the right eye,
The light of the image for the left eye is incident on the left eye. This glasses 210
You can observe full-color, flicker-free stereoscopic images by viewing at.

There has also been devised a stereoscopic image display device without glasses, in which an observer does not need to wear glasses by effectively utilizing the above-mentioned wave plate filter (Japanese Patent Laid-Open No. Hei 9 (1999) -264242). 10-63199 gazette).
Further, one display potentially having an image separation mechanism, such as a double screen display (see Japanese Patent Application Laid-Open No. 11-249593) for displaying multiple screens from one display surface by effectively utilizing the wave plate filter. The present inventors have devised a system in which two or more mixed images are displayed on the screen and a predetermined original image is taken out by the image separating mechanism.

However, when the divided wavelength plate filter 202 is mounted on the display device having the liquid crystal panel portion 201, its installation position corresponds to a predetermined area (pixel position) of the display device. Since it must be securely fixed in the position and it is not easy, the following problems occur.

[0005] The first problem is a problem in mounting a split wave plate filter. Since the above-mentioned display method is a method in which the display surface is divided into predetermined areas for use, it is effective to make the divided areas as small as possible in order to obtain resolution. And because the resolution of pixels on the display surface is becoming finer, it is possible to obtain a high-definition panel, but the corresponding high-definition wave plate filter is manufactured and manufactured in a separate process. It is very difficult to accurately fix the divided wavelength plate filter corresponding to the pixels corresponding to the predetermined area.

Even if the split-wave plate filter can be attached with high precision, the fixing is generally performed by using a resin or the like, and even if the position is once adjusted, the fixing is performed until the resin is cured. Misalignment easily occurs during the conversion period.
Also, due to various factors such as vibration and heat during transportation, the displacement often occurs. In order to maintain the accuracy of a predetermined region in the divided wavelength plate filter, a glass substrate is often used due to manufacturing problems, and in particular, the weight of the glass substrate causes a positional shift. In addition, the filter may be misaligned due to durability conditions such as deterioration of the immobilizing agent, and if the cured resin is misaligned, it is extremely difficult to make subsequent corrections. Is wasted.

Further, this stereoscopic image display system is characterized in that the optimum placement position of the filter is determined by the height of the position of the eyes of the observer at the time of viewing. Therefore, there is a problem that the position fixed in advance is not always the optimum position at the time of observation. This is shown in FIG.
The display device 220 of FIG. 17 has transparent support bases 221 and 222.
Pixel portion 223 sandwiched between the two and the divided wavelength plate filter 2
And 25. Here, in the figure, the optimum position of the wave plate filter for the observer at the observation position α is the position of the wave plate filter shown by the solid line, but if the observer's position is the observation position β, It is the position of the wave plate filter shown by the broken line. Thus, as is apparent from FIG. 17, the optimum placement position of the filter is determined by the height of the position of the eyes of the observer at the time of viewing, or the angle of the liquid crystal panel or the monitor. There is a problem that the position where the plate filter is fixed in advance is not necessarily the optimum position at the time of observation.

Furthermore, if the divided wave plate filter is displaced from the pixel by several to several tens% (several tens μm in the above example) due to the above factors, the deviation is largely observed as crosstalk between pixels. There's a problem. When properly installed, light rays from the corresponding pixel always pass through the corresponding wave plate area, and light rays from pixels other than the corresponding pixel do not pass through the corresponding wave plate area.
However, when the divided wavelength plate filter is tilted, it is only a few to several tens% of the pixels, and even if the absolute amount of deviation is, for example, about 50 μm, the amount of vertical deviation at both ends is large. In some cases, some may not pass through the wave plate region corresponding to the light beam from the corresponding pixel. As a result, crosstalk occurs between the images, which causes a problem that a good stereoscopic image cannot be displayed.

Conventionally, in mounting the wave plate filter section, a composite image for stereoscopic display as usual is displayed on the screen, and it is divided according to whether or not it looks like a stereoscopic image by wearing polarizing glasses. The position of the wave plate filter is determined. However, it is extremely vague to judge whether this stereoscopic image looks, and it is demanded that the divided wavelength plate filter can be positioned by using a more accurate method.

Therefore, in view of the above-mentioned technical problems, the present invention provides a display device capable of surely stereoscopically viewing an image accompanied by parallax information even when a divided wavelength plate filter is attached, or one display device. An object of the present invention is to provide a display device capable of double-screen display capable of surely displaying multiple screens from a display surface, a plate filter used for such a display device, a filter alignment method, and an alignment device.

In order to solve the above-mentioned problems, a plate-like filter of the present invention is a filter used by being superimposed on an image display section for displaying image information in a first section and a second section. And a filter frame portion integrally disposed around the filter portion, wherein the filter portion is provided in an area corresponding to the first division of the image display portion from the first division. A first wave plate for rotating the polarization direction of the image information in a direction different from the polarization direction of the image information from the second section, and the filter frame portion includes a first wavelength plate for rotating the polarization direction. It is characterized in that an alignment mark is formed by the two wavelength plates.

According to the plate-shaped filter of the present invention, the first direction for causing the filter section to rotate the polarization direction of the image information from the first section to a direction different from the polarization direction of the image information from the second section. Since the wave plate of is provided,
By viewing the display device through polarizing glasses or the like, it is possible to control so that both eyes receive image information of different sections according to the polarization direction. Therefore, it is possible to easily realize the image display and the double screen display that are perceived in three dimensions.
Since the filter frame part is integrally arranged around the filter part, it is possible to move the position of the entire filter part by moving the position of the filter frame part. Since the part does not directly serve as the image display part, even if such a mark for alignment is provided, the display capability of the image display part is not impaired at all, and a reliable and highly accurate filter part and image Positioning between the display units is possible.

Further, the display device of the present invention comprises an image display section for displaying image information in the first section and the second section, and an image display frame section integrally provided around the image display section. And a direction of polarization of the image information from the first section in a region corresponding to the first section of the image display section that is used by being overlapped with the image display section. A filter part having a first wave plate that rotates in a direction different from the direction, and a filter frame part integrally disposed around the filter part, and the filter frame part has a first position. An alignment mark is formed, and a second alignment mark is formed on the image display frame body portion so as to correspond to the first alignment mark.

The display device of the present invention has, in the above-mentioned plate filter, an image display section and an image display frame section integrally provided around the image display section. From the combination of the plate filter and the image display unit described above, it is possible to easily realize a stereoscopic image display and a double screen display. A second alignment mark is formed on the image display frame body portion in a shape corresponding to the first alignment mark formed on the filter frame body portion. By using the corresponding first and second alignment marks together, it becomes possible to simultaneously capture both alignment marks by the same imaging means or other position detection means, and the plate-shaped filter and the image display unit You can go to each position. Therefore, more accurate positioning is performed at the time of mounting.

The filter alignment method of the present invention is
From the first section to an area corresponding to the first section of the image display section, which is used by being superimposed on the image display section, in the image display section for displaying the image information in the first section and the second section. And a filter frame having a first wave plate for rotating the polarization direction of the image information in a direction different from the polarization direction of the image information from the second section, and a filter frame integrally provided around the filter section. In a filter alignment method of arranging a plate-shaped filter having a body so that the position of the first wave plate is located corresponding to the first section, the plate-shaped filter is provided in the image display unit. The position of the plate-shaped filter is detected by using the alignment mark formed on the filter frame portion in the overlapping state, and the plate-shaped filter is detected based on the detected position information of the plate-shaped filter. Obtains a deviation between the position of said image display unit of the terpolymer, characterized by modifying the position of said plate-shaped filter with respect to the image display unit from the determined value.

According to the filter alignment method of the present invention, the position of the plate filter is first detected by using the alignment mark formed on the filter frame. Since the filter frame part constitutes a part of the plate filter, it is possible to grasp the position of the plate filter by forming the alignment mark on the filter frame part. By forming the alignment mark on the portion, the alignment mark does not interfere with the display of the stereoscopic image. The deviation between the position of the plate filter and the position of the image display unit is obtained by a method such as calculation based on the detected position information of the plate filter. The position of the plate filter with respect to the image display unit is corrected based on the obtained value. in this case,
The position of the plate filter is already known, and the position can be changed by moving the plate filter, the image display unit, or the display panel in the direction that reduces the deviation between the position of the plate filter and the position of the image display unit. Will be corrected.

Further, according to another filter alignment method of the present invention, an image display unit for displaying image information in the first section and the second section, and an image display integrally arranged around the image display section. With respect to a display panel having a frame portion, the polarization direction of the image information from the first section is set in the area corresponding to the first section of the image display section, which is used by being overlapped with the image display section. A plate-shaped filter having a filter part having a first wave plate for rotating in a direction different from the polarization direction of the image information from the two sections and a filter frame part integrally arranged around the filter part; In a method of aligning a filter in which the position of the first wave plate is located so as to correspond to the first section, a first alignment mark is formed on the filter frame body and the image is formed. A second alignment mark corresponding to the first alignment mark is formed on the display frame body portion, and is formed on the image display frame body portion in a state where the plate filter is overlapped on the image display portion. The position of the display panel is detected using the formed second alignment mark, and the first alignment mark is formed on the filter frame body in a state where the plate filter is superposed on the image display unit. The position of the plate filter is detected using a mark, and the displacement between the position of the plate filter and the position of the image display unit is detected based on the detected position information of the display panel and the plate filter. It is characterized in that calculation is performed and the position of the plate-like filter with respect to the image display unit is corrected based on the calculated value.

In the filter alignment method of the present invention, the first alignment mark is formed on the filter frame body portion, and the first alignment mark is formed on the image display frame body portion in correspondence with the first alignment mark. Since the second alignment mark is formed, the position can be detected individually for both the image display frame body portion, that is, the display panel and the filter frame body portion, that is, the plate-shaped filter. The filter can be aligned.

The filter alignment device of the present invention comprises:
A device for realizing the filter alignment method as described above, wherein the image display unit is used by being superimposed on the image display unit in an image display unit for displaying image information in a first section and a second section. In a region corresponding to the first section of the first wave plate for rotating the polarization direction of the image information from the first section in a direction different from the polarization direction of the image information from the second section. Filter support means for movably supporting a plate-shaped filter having a filter part and a filter frame part integrally arranged around the filter part, with the plate-shaped filter being superimposed on the image display part, Based on the position information of the detected plate-shaped filter, the filter position detection means for detecting the position of the plate-shaped filter using the alignment mark formed on the filter frame body portion. Control for activating the filter support means so as to correct the position of the plate filter with respect to the image display unit from the value obtained by determining the deviation between the position of the plate filter and the position of the image display unit. And means.

In the filter alignment device of the present invention, the filter position detecting means for detecting the position of the plate filter detects the position of the plate filter by using the alignment mark formed on the filter frame. . In this state, the plate filter is supported by the filter support means, and each support means can be controlled by the signal from the control means based on the detected position information, and the plate filter and the display panel can be reliably connected. Each position can be adjusted.

Further, in another filter alignment apparatus of the present invention, an image display section for displaying image information in the first section and the second section, and a second unit which is integrally provided around the image display section, is provided. Display panel supporting means for movably supporting a display panel having an image display frame body portion on which the position alignment mark is formed; and the first panel of the image display portion, which is used by being superimposed on the image display portion. A filter unit having a first wave plate for rotating the polarization direction of the image information from the first section in a region corresponding to the section in a direction different from the polarization direction of the image information from the second section, and the filter. A plate-like filter having a filter frame portion integrally formed around the portion and having a first alignment mark formed thereon, and movably supported in a state where the plate-like filter is superposed on the image display portion. filter Display panel position detection for detecting the position of the display panel by using a support means and a second alignment mark formed on the image display frame body portion in a state where the plate filter is superposed on the image display portion. Means and filter position detecting means for detecting the position of the plate filter by using the first alignment mark formed on the filter frame portion in a state where the plate filter is superposed on the image display portion. The displacement between the position of the plate filter and the position of the image display unit based on the detected position information of the display panel and the plate filter, and the plate relative to the image display unit from the calculated value. Control means for activating at least one of the filter support means and the display panel support means so as to correct the relative position of the filter. To.

In such a filter alignment device, the filter position detecting means for detecting the position of the plate filter detects the position of the plate filter by using the alignment mark formed on the filter frame. Further, the display panel position detecting means detects the position of the display panel using the second alignment mark formed on the image display frame body portion. In this state, the plate-shaped filter and the display panel are supported by the respective supporting means, and the respective supporting means can be controlled by the signal from the control means on the basis of the detected position information, so that the plate-shaped filter is surely supported. Each position of the filter and display panel can be adjusted.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, a stereoscopic image display device that displays image information having parallax will be mainly described, but double-screen display is also possible with a similar structure, and a double-screen display type display device is similarly configured. Is what you can do.

A stereoscopic image display device 1 according to an embodiment of the present invention.
FIG. 1 shows a schematic configuration in which 0 is decomposed and shown. The stereoscopic image display device 10 according to the present embodiment includes a notebook computer 11
And a divided wavelength plate filter 12 as a plate filter mounted on the notebook computer 11, and a support frame 27 is arranged on the outside thereof.

The notebook computer 11 has a foldable liquid crystal panel section 22 having a liquid crystal display section 28 as an image display section, and an image including parallax can be displayed from the liquid crystal panel section 22. The liquid crystal panel unit 22 itself may be a liquid crystal display panel of a normal notebook computer 11 as described later, and for example, when an application for displaying a stereoscopic image is opened, it is possible to display a moving image and a still image. Is. The liquid crystal panel section 22 is configured such that an image display frame body section 29 is integrally formed around a liquid crystal display section 28 which is an image display section. The image display frame body portion 29 is a peripheral area on the surface of the liquid crystal panel portion 22 in which the transparent substrate is extended, and is an area where the pixel portion is not formed. As will be described later, an alignment mark omitted in FIG. 1 is formed on the image display frame body portion 29.

On the side facing the liquid crystal panel section 22, there is formed a keyboard section 21 comprising keys corresponding to alphanumeric characters, hiragana and katakana, and various control keys. The keyboard section 21 is used in a continuous form. A palm rest portion 23 is provided on the front side of the person, and a pointer pad portion 24 is formed at a substantially central portion of the palm rest portion 23. The keyboard section 21 and the like are the liquid crystal panel section 2.
2 is connected via hinge portions 25, 25, and the liquid crystal panel portion 22 is rotatable around the hinge portions 25, 25. Therefore, the viewer of the stereoscopic image can operate the angle of the liquid crystal panel unit 22 with the hinges 25, 25 as the center of rotation. A position adjustment pattern display program can be stored in the hard disk of the notebook computer 11, and the position adjustment pattern is displayed on the liquid crystal panel unit 22 by the program being read and executed by the CPU. It is also possible.

A split wave plate filter 12 is attached to such a liquid crystal panel portion 22, and a support frame 27 made of, for example, synthetic resin for holding the display panel and the split wave plate filter 12 is provided around the outside of the filter plate. The divided wavelength plate filter 12 is a member that functions as a plate-shaped filter, and a filter portion 13 is formed in a substantially central portion,
The filter frame body portion 14 is formed as an outer frame thereof. As will be described later, the filter unit 13 of the divided wavelength plate filter 12 is a polarization control unit in which a band-shaped half-wave plate is arranged every other horizontal line of pixels, and in particular, around the divided wavelength plate filter 12, The filter frame body portion 14 is formed as a frame. In the filter frame body portion 14, the alignment mark of the divided wavelength plate filter 12 as a plate filter corresponding to the alignment mark in the image display frame body portion 29 is formed.

FIG. 2 is an exploded perspective view for explaining the display structure of the stereoscopic image display device of this embodiment. The configuration of the liquid crystal panel side and the configuration of the divided wavelength plate filter are combined to enable stereoscopic display. First, the liquid crystal panel side structure is such that a liquid crystal pixel portion 32 is disposed between a pair of transparent supporting bases 31 and 33, and the liquid crystal pixel portion 32 has a red pixel portion 32R and a green pixel portion, respectively. 32G and a blue pixel portion 32B are combined, and the pixel portions of these three colors are arranged in a matrix.
The pixel portion 32 is provided with necessary electric wiring to have a simple matrix structure or an active matrix structure,
When displaying a stereoscopic image, image information corresponding to parallax is displayed. In the present embodiment, an example in which a liquid crystal panel is adopted as the image display unit is described, but the image display unit of the stereoscopic image display device of the present invention includes a light emitting element array display device, an organic electroluminescence display device, Cathode ray tube,
It can be configured by various image display devices such as a plasma display device, and the divided wavelength plate filter can be operated in combination with these various image display devices.

A polarizing plate 34 is arranged on the viewer side of the transparent support substrate 33. The light that has passed through the polarizing plate 34 becomes linearly polarized light, and the linearly polarized light reaches the split wave plate filter. The divided wave plate filter has a band-shaped divided wave plate 42 formed on one side of a transparent support substrate 41 made of glass or the like, that is, on the liquid crystal panel side in this example. Each of the divided wave plates 42 extends so that the longitudinal direction thereof is horizontal, and the width of the band is approximately the same as the pixel pitch of the liquid crystal pixel unit 32 described above. The number of divided wavelength plates 42 is half the number of pixels in the vertical direction of the liquid crystal pixel unit 32.

Each band-shaped divided wave plate 42 is formed by the liquid crystal pixel unit 3.
It is formed every other line with a pixel pitch of 2. Therefore, when either the stereoscopic image for the right eye or the stereoscopic image for the left eye passes through the divided wavelength plate 42, the polarization direction thereof is rotated by 90 degrees, and the polarization direction on the side not passing through the divided wavelength plate 42 is rotated. The stereoscopic image is output as it is without rotating its polarization direction. In the present embodiment, the split wave plate 42 is used.
Has a structure in which every other line is extended in the horizontal direction, but the split wave plate 4 is arranged so that the polarization direction is different between the stereoscopic image for the right eye and the stereoscopic image for the left eye in each line.
2 may be formed. The extension direction of the divided wavelength plate 42 is not limited to the horizontal direction, and may be a vertical direction or an oblique direction. In addition, the division wavelength plate 42 is also not for each line,
It may be for each area (for example, Faris US Pat. No.
5,327,285). In the present embodiment, the divided wave plate 42 is formed on the surface of the transparent support base 41 on the liquid crystal panel side.
It is also possible to form the divided wave plate 42 on the viewer side.

In order to perform a three-dimensional display, different polarization directions are controlled for each line, and when passing through the divided wavelength plate 42, two kinds of orthogonal linearly polarized light are mixed. The viewer wears polarized glasses 51 as shown in (B) to selectively receive a stereoscopic image for the right eye and a stereoscopic image for the left eye with both eyes.
Reference numeral 52L is a polarizing filter, which makes it difficult to see a stereoscopic image when the angle with the linearly polarized light does not match. Therefore, in the present embodiment, a quarter-wave plate 45 is further formed on the outer portion of the split wave plate filter to convert linearly polarized light into circularly polarized light, and the quarter-wave plate is also provided on the surface of the polarizing glasses 51. 5
By attaching No. 3, circularly polarized light is converted into linearly polarized light again and transmitted through the polarizing glasses 51. By providing such a pair of quarter-wave plates 45 and 53, a stereoscopic image can be surely viewed even when the polarization direction is slightly deviated.

Next, the image information in the stereoscopic image display apparatus of this embodiment will be briefly described with reference to FIGS. In the stereoscopic image display device of this embodiment, an image signal as shown in FIG. 3 is used. That is, during the horizontal scanning period divided by the pulse of the horizontal synchronizing signal, the image data for the right eye and the image data for the left eye are alternately sent line by line.

FIG. 4 shows the division of the image data displayed on the image display unit 60. As described above, the image data for the right eye and the image data for the left eye L are alternately arranged line by line in FIG. First section 61 for the right eye and second section 6 for the left eye
2 will be arranged alternately for each line. Therefore, when a certain pixel line of the liquid crystal panel displays the right-eye image data R, the next pixel line is the left-eye image data L.
Is displayed, and hereinafter, the first segment 61 for the right eye is displayed.
And the second section 62 for the left eye are alternately repeated for each line, and a stereoscopic image is displayed as a whole.

By mounting the split wave plate filter on a normal liquid crystal panel or the like, a stereoscopic image can be easily viewed. However, when the positional relationship between the pixel section of the display device and the split wave plate filter is not adjusted correctly, typically, as shown in FIG. Relationship, split wave plate 4
Even if the divided wave plate filter forming 2 is slightly inclined, if the vertical shift amount z1 is shifted from the number of pixels to several tens%, the absolute amount of the shift is, for example, 250 μm for a pixel and 5
Even if it is about 0 μm, some rays originally from the corresponding pixel do not pass through the predetermined divided wavelength plate 42, and as a result, crosstalk of each image may occur.

It is necessary to suppress the occurrence of such crosstalk in order to display an optimal stereoscopic image,
Therefore, highly accurate position adjustment work is required at the time of mounting. FIG. 6 is a diagram showing a position adjusted to a correct position by the position adjustment work. As shown in FIG. 6, a division formed in a strip shape so as to exactly overlap the pixel line of the pixel portion 32 of the display device. The wave plate 42 is provided,
The light beam from the pixel section 32 corresponding to the divided wavelength plate 42 must be transmitted through the corresponding section of the divided wavelength plate 42, and the light rays from the pixels other than the corresponding pixel section must be transmitted through the region inside the divided wavelength plate 42. There is no. Therefore, a good stereoscopic image is displayed without causing crosstalk.

Here, a structure for achieving highly accurate alignment at the time of mounting will be described with reference to FIGS. 7 to 14. FIG. 7 shows a split wave plate filter 81 which is a plate filter and a liquid crystal panel section 82 which is a display panel.
3 is an exploded perspective view of the image display side of FIG. The divided wave plate filter 81 corresponds to the divided wave plate filter 12 of FIG. 1, and the liquid crystal panel section 82 corresponds to the liquid crystal panel section 22 of FIG.

The divided wave plate filter 81 has a structure in which a transparent supporting substrate made of a substantially rectangular flat glass plate is formed into a wave plate by fine processing such as etching. The even line on the pixel line is the right eye. Alternatively, the image for the left eye is transmitted, and the odd line is transmitted through the image for the left eye or the right eye. The split wave plate filter 81 is
The liquid crystal panel section 8 has a filter frame body portion 84 serving as an outer frame, and a rectangular region surrounded by the filter frame body portion 84.
The filter unit 83 corresponds to two pixel regions. In the filter portion 83, for example, even lines are band-shaped regions that give a phase difference of 0 to transmitted light, and odd lines are band-shaped regions that give a phase difference of π (that is, 90 degrees) to transmitted light.

The filter frame portion 84 has four alignment marks 85, 86 near the center of the side and four at the corners.
Are formed. The alignment marks 85 and 86 are marks for accurately positioning the split wave plate filter 81 and the liquid crystal panel section 82. The alignment mark 85 has, for example, a star-shaped planar shape, and is formed by a wave plate that gives a phase difference π (that is, 90 degrees) to transmitted light in this embodiment. The alignment mark 85 can be formed by the wave plate at the same time when the band-shaped region of the filter portion 83 is formed. Specifically, since the wave plate is formed by etching in the band-shaped region of the filter portion 83 by cutting a transparent supporting substrate such as a glass material, a mask for the photolithography is used as the alignment mark 85. The alignment mark 85 can be formed by the same etching while opening the corresponding region. Alignment mark 8
6 has, for example, a cruciform planar shape, and in this embodiment, in particular, it is formed so as to allow the transmitted light to pass therethrough as it is without changing the polarization direction, that is, the polarization direction. The planar shape of the alignment marks 85 and 86 is
The shape is not particularly limited as long as it can be easily detected,
Further, the position is not limited to the pattern in which a total of eight are formed along the peripheral portion, and positioning can be performed if two or more are provided.

On the liquid crystal panel portion 82, which is overlapped with the divided wavelength plate filter 81, a liquid crystal display for controlling the respective pixels arranged in a matrix based on the transmitted video signal to display a desired still image and moving image. The part 87 is formed in the approximate center part. One of the transparent support substrates formed so as to sandwich the liquid crystal portion is disposed on the front surface side of the liquid crystal panel portion 82, and the back surface of the split wave plate filter 81 is directly attached to one of the support substrates. Directly or indirectly. An image display frame body portion 88 in which one of the same transparent support substrates is continuous is formed around the liquid crystal display portion 87 formed of pixel regions arranged in a matrix. The image display frame body portion 88 is a region corresponding to the filter frame body portion 84 of the divided wavelength plate filter 81, and the filter frame body portion 84.
Four alignment marks 89 and 9 near the center of the side and at the corners corresponding to the alignment marks 85 and 86, respectively.
0 is formed.

In this embodiment, the alignment mark 8
Reference numerals 9 and 90 are set to have a star shape and a cross shape, respectively, which have the same planar shape as the alignment marks 85 and 86 of the filter frame portion 84. These alignment marks 89 and 90 are formed, for example, by opening a light-shielding film in the shape of a star or a cross so that light in a star-shaped or cross-shaped pattern having a planar shape is transmitted. Between the alignment marks 85, 86 of the filter frame body 84 and the alignment marks 89, 90 of the image display frame body 88 by having the same shape as the alignment marks 85, 86 of the filter frame body 84. Thus, the position of the mark can be easily detected while utilizing a common detection means and the same shape recognition program. Note that the planar shapes of the alignment marks 89 and 90 are not particularly limited as long as they are shapes that can be easily detected, and their positions can be arbitrarily set.
By setting the position corresponding to each of the alignment marks 85 and 86 of 84, it becomes possible to easily detect the position by the common detecting means. The place where the alignment marks 89, 90 are formed is
In general, the split wave plate filter 81 of the liquid crystal panel unit 82
Although it is the back surface of the transparent substrate on the side, it may be formed on another portion that can transmit light. Further, the alignment mark of the glass plate used when the liquid crystal part is sandwiched between the pair of glass plates of the liquid crystal panel part 82 can be used as it is.

FIG. 8 shows another example of the shape of the alignment mark. FIG. 8A shows a cross-shaped thin shape, which makes it possible to detect the deviation of the intersection of the horizontal line and the vertical line. (B) is a circular pattern, and if there is a displacement, a pattern such as the phases of the moon appears. In (c) to (e), the outer circles are the alignment marks 89, 9 of the liquid crystal panel section 82.
The shape is 0, and the spots appearing inside are the shapes of the alignment marks 85 and 86 of the filter frame body portion 84. (C) is an example of one inner spot, (d) is two inner spots, and (e) is an example of three inner spots. The shapes of these alignment marks are merely examples, and any shape can be selected.

Next, the alignment mechanism at the time of mounting will be described with reference to FIG. The device of FIG. 9 is a device in which a divided wave plate filter 81 which is a plate filter and a liquid crystal panel section 82 which is a display panel are overlapped with each other and the positions of the divided wave plate filter 81 and the liquid crystal panel section 82 are aligned with each other. is there. The divided wavelength plate filter 81 is arranged below the liquid crystal panel portion 82. An imaging section 94 such as a solid-state imaging element is formed at a lower end of a vertically extending arm 93 as a pair of imaging means, and an imaging surface of these imaging sections 94 faces the liquid crystal panel section 82.
The arm 93 can move horizontally and vertically,
The image signal captured by the image pickup unit 94 is sent to a control unit such as a CPU via the arm 93.

On the opposite side of the image pickup section 94, that is, on the bottom side of the device in the portion where the divided wavelength plate filter 81 and the liquid crystal panel section 82 are superposed, a pair of parallel backlight light sources are provided so as to correspond to the image pickup section 94. 92 is provided, and is configured to emit parallel light rays upward from the parallel backlight light source 92. The divided wave plate filter 81 is fixed to a filter support portion or a movable base (not shown) that allows the divided wave plate filter 81 to move, and the liquid crystal panel portion 82 has the liquid crystal panel portion 8 thereof.
It is fixed to a display plate supporting portion (not shown) that supports 2. An upper polarizing plate 96 that transmits light polarized at a required angle is disposed in a gap between the image capturing unit 94 and the liquid crystal panel unit 82. The polarizing plate 96 is provided between the image capturing unit 94 and the liquid crystal panel unit 82. The space between them allows them to appear and disappear freely. Upper polarizing plate 9
6 is the alignment mark 8 of the divided wave plate filter 81
It is used to detect whether or not the linearly polarized light is transmitted at 5 and 86, and the position where it appears and disappears is controlled by the controller. The upper polarizing plate 96 is, for example, rotatable about an axis (not shown), and the retracting operation of the lower polarizing plate 96 is controlled by controlling the position around the axis. In the space between the parallel backlight light source 92 and the split wave plate filter 81, a lower polarizing plate 95 is arranged so as to be fixed to the space, and the light from the parallel backlight light source 92 is linearly polarized light. Convert to.

FIG. 10 is a perspective view of the main part of the positioning mechanism at the time of mounting. The light from the parallel backlight light source 92 passes through the lower polarizing plate 95 and enters the alignment mark 85 of the split wave plate filter 81. Parallel backlight light source 9
The position 2 corresponds to the position of the image pickup unit 94 arranged on the upper side and the vertical direction which is the optical axis direction.
The light transmitted through reaches the image pickup unit 94. The split wave plate filter 81 is in contact with supporting members 96 and 97 which are a part of a filter moving mechanism 102 which will be described later, and these supporting members 96 and 97 are moved in the X direction and the Y direction by a signal from the control unit. The position of the split wave plate filter 81 is finely adjusted. Similarly, the liquid crystal panel section 82 is also in contact with a supporting member 98 which is a part of a display panel moving mechanism 101 which will be described later, and the supporting member 98 moves according to a signal from the control section to finely adjust the position of the liquid crystal panel section 82. To do. Note that the supporting members 96, 97, and 98 for finely adjusting the positions of the divided wavelength plate filter 81 and the liquid crystal panel unit 82 are examples, and the numbers and shapes thereof are the positions of the divided wavelength plate filter 81 and the liquid crystal panel unit 82. Any mechanism can be selected as long as the mechanism can be finely adjusted. For example, a biaxial or triaxial table can be used. In this case, when it is necessary to partially transmit light, the light transmitting portion may be cut out, or a member having a function of transmitting light such as glass or a transparent resin material may be used.

In such an alignment device, the alignment between the split wave plate filter 81 and the liquid crystal panel portion 82 can be performed from the steps shown in FIGS. 11 to 13. In addition, a flow chart of this alignment work is shown in FIG. Figure 1
Reference numeral 4 indicates that the alignment work is advanced by the operations of steps S11 to S19.

As shown in FIG. 11, when the alignment between the divided wave plate filter 81 and the liquid crystal panel section 82 is performed, first, the divided wave plate filter 81 is set on the filter moving mechanism 102, and the liquid crystal panel section 82 is set. Is set on the display panel moving mechanism 101 (step S11). At this stage, the liquid crystal panel section 82 and the divided wavelength plate filter 81 are overlapped with each other, and the upper polarizing plate 96 rotated by the control section 100 is retracted from the optical path between the image pickup section 94 and the parallel backlight light source 92. Controlled by.

In this state, light is output from the parallel backlight light source 92, and the light from the parallel backlight light source 92 becomes light 103 that is uniformly linearly polarized by the lower polarizing plate 95. The linearly polarized light passes through the split wave plate filter 81 and the liquid crystal panel section 82 and reaches the image pickup section 94. In the image pickup section 94, the alignment mark 89 of the liquid crystal panel section 82 is grasped by the transmitted light (step S12), and the image is sent to the control section 100 as an image signal (step S1).
3).

The control section 100 detects the position of the alignment mark 89 of the liquid crystal panel section 82 based on the signal from the image pickup section 94. Subsequently, the control unit moves the lower polarization plate 96 so as to overlap the alignment mark 89 of the liquid crystal panel unit 82 as shown in FIG.
Image at 4. (Procedure S14, S15). Since the alignment mark 85 of the divided wavelength plate filter is formed of the wavelength plate as described above, the polarization direction of the light 104 passing through the region of the alignment mark 85 is rotated by 90 degrees. On the other hand, the polarization direction of the light that has passed through the region of the alignment mark 85 without the wave plate does not change. Therefore, the image recognized by the imaging unit 94 through the polarizing plate 96 is an image in which the alignment mark 85 of the split wave plate filter 81 is displayed in addition to the alignment mark 89 of the liquid crystal panel unit 82. When the mark is opaque, the mark 89 is always black (opaque), but the mark 85 is displayed with the contrast reversed by the rotation of the polarizing plate 96. Therefore, the control unit 1 is connected via the image pickup unit 94.
In 00, in addition to the position information of the liquid crystal panel portion 82 previously detected by the pattern recognition, the alignment information of the alignment mark 85 of the divided wavelength plate filter 81 is also simultaneously obtained by the pattern recognition of the portion where the contrast is changed. As a result, the position can be detected quickly.

At this stage, from the detection result of the image pickup section 94,
The positions of the liquid crystal panel unit 82 and the divided wave plate filter 81 are recognized (step S16), and the positions of the liquid crystal panel unit 82 and the divided wave plate filter 81 are compared based on the position information,
A deviation amount is obtained from the comparison result (step S17). If the displacement amount becomes zero, it means that the alignment work is completed, and the process is completed. When the deviation amount is not zero, the display panel moving mechanism 101 and the filter moving mechanism 10 are instructed by a signal from the control unit 100 according to the deviation amount.
2 is operated to move the liquid crystal panel portion 82 and the divided wavelength plate filter 81 to the required positions (step S19). After the liquid crystal panel section 82 and the divided wavelength plate filter 81 are moved, the procedure returns to step S15 to repeat the position detection and correction, and finally the deviation amount is set to zero and the processing is ended.

In the present embodiment, in addition to the alignment mark 89 of the liquid crystal panel 82, the alignment mark 85 of the divided wave plate filter 81 can be detected almost at the same time, and a quick process can be performed when the relative position is obtained. Is.
Further, the image pickup unit 94 used for position detection can be shared, and the alignment programs can be shared by using the same alignment shape. The alignment mark 85 of the divided wavelength plate filter 81 can be detected as a pattern in which the contrast changes easily by utilizing the fact that the alignment mark 85 includes the wavelength plate, and thus the liquid crystal panel can be easily recognized. The position of the mark can be reliably detected from the contrast of the alignment pattern of the portion 82. Split wave plate filter 81
In order to form the alignment mark 85 including the wavelength plate, it suffices to simply replace the mask pattern at the time of manufacturing the divided wavelength plate filter 81 with a shape including the alignment mark 85 and the alignment mark 86. It is very effective because it does not increase.

In the present embodiment, the liquid crystal panel section 82
Although the alignment mark of 1 is detected without disposing the upper polarization plate 96, the light from the parallel backlight light source 92 can be detected even when the upper polarization plate 96 is disposed.
Split wavelength plate filter 8 without linearly polarized light using 5
With the alignment mark 85 of No. 1 arranged so as to be transmitted as it is, the light side polarization plate 95 is inserted,
The alignment direction 89, 90 of the liquid crystal panel unit 82 may be detected by rotating the polarization direction.

FIG. 15 shows another example of the alignment apparatus, in which the liquid crystal panel section 82 is placed on the XY stage 110. In this device, the split wave plate filter 81 is located on the liquid crystal panel portion 82, and the split wave plate filter 81 can be moved and controlled by the support members 111 and 112. In this device, XY stage 1
Since light is transmitted through 10, a structure in which a light transmitting portion is cut out or a structure in which light is transmitted such as glass or a transparent resin material is adopted. Although the divisional wavelength plate filter 81 is located above the liquid crystal panel portion 82, the positional relationship between the liquid crystal panel portion 82 and the divisional wavelength plate filter 81 is reversed, but such an arrangement may be reversed.

Although the liquid crystal display panel for displaying an image with liquid crystal has been described as the display panel in the above-described embodiments, other image display devices such as an LED array and an organic display device can be used as the display device of the present invention. It can also be applied to EL, plasma displays, cathode ray tubes, and other various image display devices. Further, in the present embodiment,
The filter has a positioning mark with a structure that has a wave plate.It is also possible to directly use the divided wave plate of the filter part of the divided wave plate filter without detecting the position by the alignment mark. is there. In this case, the division wavelength plate can be detected by irradiating polarized light and observing the filter section through the polarizing plate, similarly to the alignment mark. It is also possible to detect the divided wavelength plate by measuring the distance from the side where the divided wave plate is provided to the filter portion or by measuring the thickness of the filter.

Further, in the above embodiment, the device for stereoscopically displaying the left and right images on one display surface has been described. However, the display device having the same divided wavelength plate filter section has one display screen as it is. It can also be applied to a display device that displays images for two or more screens, and the position can be easily adjusted by the above-described alignment device.

As described above, according to the display device of the present invention, an image accompanied by parallax information can be surely viewed stereoscopically even when a plate filter such as a split wavelength plate filter is attached. It is possible to provide a device that can detect the relative position of the plate-shaped filter almost at the same time in addition to the alignment mark of the image display unit. is there.

Further, according to the display device of the present invention, it is possible to use the same for the position detecting means, and by using the same alignment shape, it is possible to use a common alignment mark recognition program. Further, when the alignment mark is detected by configuring the alignment mark to include a wavelength plate, it can be easily recognized as a dark pattern, and the mark position can be reliably detected from the contrast of light and dark. In particular, forming the alignment mark including the wave plate on the plate filter is very effective because it is only necessary to change the mask pattern at the time of manufacturing the plate filter and the number of steps does not increase.

[Brief description of drawings]

FIG. 1 is a perspective view of a stereoscopic image display device according to an embodiment of the present invention.

FIG. 2 is an exploded schematic view showing the structures of a pixel unit and a split wave plate filter of a stereoscopic image display device according to an embodiment of the present invention.

FIG. 3 is a waveform diagram showing an example of an image signal used in the stereoscopic image display device according to the embodiment of the present invention.

FIG. 4 is a schematic diagram showing an image pattern of a stereoscopic image display device according to an embodiment of the present invention.

FIG. 5 is a perspective view showing a state before position adjustment of the stereoscopic image display device according to the embodiment of the present invention.

FIG. 6 is a perspective view showing a position-adjusted state of the stereoscopic image display apparatus according to the embodiment of the present invention.

FIG. 7 is an exploded perspective view showing a liquid crystal panel unit and a split wave plate filter of a stereoscopic image display device according to an embodiment of the present invention.

FIG. 8 is a plan view showing another example of alignment marks formed on the liquid crystal panel section and the divided wavelength plate filter of the stereoscopic image display device according to the embodiment of the present invention.

FIG. 9 is a schematic perspective view of an alignment device used when mounting the display device of the present invention.

10 is a perspective view of a main part of the alignment device in FIG.

FIG. 11 is a process cross-sectional view when the liquid crystal panel unit and the divided wavelength plate filter of the display device of the present invention are mounted by aligning their positions, and is a cross-sectional view illustrating the position detection process of the liquid crystal panel unit.

FIG. 12 is a process cross-sectional view when the liquid crystal panel portion of the display device of the present invention and the divided wavelength plate filter are mounted by aligning the positions thereof, and a cross-sectional view illustrating a position detection process in which the wavelength plate of the divided wavelength plate filter is opened. It is a figure.

FIG. 13 is a process cross-sectional view when the liquid crystal panel unit and the split wavelength plate filter of the display device of the present invention are mounted by aligning the positions thereof, and a process of aligning the position of the liquid crystal panel unit and the split wavelength plate filter will be described. FIG.

FIG. 14 is a flow chart illustrating a positioning operation when mounting the liquid crystal panel unit and the divided wavelength plate filter of the display device of the present invention by aligning the positions thereof.

FIG. 15 is a schematic perspective view of another example of a positioning device used when mounting the display device of the present invention.

FIG. 16 is an exploded schematic view showing the structures of a pixel section and a divided wavelength plate filter section of a conventional stereoscopic image display device.

FIG. 17 is a cross-sectional view showing a structure of a divided wavelength plate filter unit of a conventional stereoscopic image display device.

[Explanation of symbols]

10 Stereoscopic image display device 11 notebook computer 12 division wavelength plate filter 22 LCD panel 81 split wave plate filter 82 LCD panel section 83 Filter section 84 Filter frame part 85, 86 alignment mark 87 Liquid crystal display 88 Image display frame body 89, 90 Alignment mark 92 Parallel backlight light source 94 Imaging unit 95 Lower polarizing plate 96 Upper polarizing plate 100 control unit 101 Display panel moving mechanism 102 Filter moving mechanism

Claims (34)

[Claims] 1. A filter unit used to overlap an image display unit for displaying image information in a first section and a second section, and a filter frame body section integrally provided around the filter section. The filter unit includes a polarization direction of image information from the first section and a polarization direction of image information from the second section in an area corresponding to the first section of the image display unit. Is provided with a first wave plate that rotates in different directions, and the filter frame portion is provided with an alignment mark formed by a second wave plate that rotates the polarization direction. Filter. 2. The plate filter according to claim 1, wherein the alignment marks are formed at a plurality of locations on the filter frame body. 3. A second structure forming the alignment mark.
2. The plate filter according to claim 1, wherein the wave plate is formed at the same time when the first wave plate is formed in the filter section. 4. The plate filter according to claim 1, wherein the first section and the second section are composed of line-divided even-numbered lines and odd-numbered lines. 5. The plate filter according to claim 4, wherein the dividing direction of each line in the filter portion is a horizontal direction or a vertical direction. 6. The alignment mark detects a relative position with respect to another alignment mark formed in a part of an image display frame portion integrally arranged around the image display portion. The plate-shaped filter according to claim 1, which is a filter. 7. An image display section for displaying image information in a first section and a second section, an image display frame section integrally arranged around the image display section, and an image display section in the image display section. Rotate the polarization direction of the image information from the first section in a region corresponding to the first section of the image display unit, which is different from the polarization direction of the image information from the second section. A filter part having a first wave plate to be made to have, and a filter frame part integrally arranged around the filter part, and a first alignment mark is formed on the filter frame part, A display device, wherein a second alignment mark is formed on the image display frame body portion in correspondence with the first alignment mark. 8. The display device according to claim 7, wherein the first alignment mark is formed by using a second wave plate. 9. The display device according to claim 7, wherein the first and second alignment marks are formed at a plurality of locations on the filter frame body portion and the image display frame body portion. 10. The second wave plate constituting the first alignment mark is formed simultaneously with the formation of the first wave plate in the filter section. Display device described. 11. An image display unit for displaying image information in a first section and a second section, wherein the image display section is used by being overlapped with the image display section and corresponding to the first section of the image display section. A filter unit having a first wave plate for rotating the polarization direction of the image information from the first section in a direction different from the polarization direction of the image information from the second section, and integrally disposed around the filter section. In a filter alignment method for arranging a plate-shaped filter having a filter frame portion provided so that the position of the first wave plate is located corresponding to the first section, The position of the plate filter is detected by using the alignment mark formed on the filter frame portion in the state where the plate filters are stacked, and based on the detected position information of the plate filter. The position of the plate-shaped filter and the position of the image display unit is obtained, and the position of the plate-shaped filter with respect to the image display unit is corrected from the obtained value. . 12. The method for aligning a filter according to claim 11, wherein the alignment mark is formed by using a second wave plate. 13. The position of the plate filter is detected by
The filter alignment method according to claim 11, wherein the light transmitted through the alignment mark is polarized. 14. The position of the plate filter is detected by
The light transmitted through the alignment mark and the transmitted light of the plate filter that does not transmit the alignment mark are compared with each other.
The method for aligning the filter according to 1. 15. The alignment mark is formed at a plurality of locations on the filter frame body portion, and the position of the plate filter with respect to the image display unit is corrected in each of the alignment marks. The filter alignment method according to claim 11. 16. The alignment mark is composed of a wave plate, and the wave plate is formed simultaneously with the formation of the first wave plate in the filter section. How to align the filter of. 17. The alignment method according to claim 11, wherein the first section and the second section are composed of line-divided even-numbered lines and odd-numbered lines. 18. The method according to claim 17, wherein the dividing direction of each line in the filter unit is a horizontal direction or a vertical direction. 19. A display panel having an image display section for displaying image information in a first section and a second section and an image display frame section integrally arranged around the image display section, The polarization direction of the image information from the first section and the polarization direction of the image information from the second section are used in a region corresponding to the first section of the image display section, which is used by being overlapped with the image display section. Is a plate-shaped filter having a filter portion having a first wave plate which rotates in different directions and a filter frame portion integrally arranged around the filter portion,
A method of aligning a filter in which the position of the first wave plate is located so as to correspond to the first section, wherein a first alignment mark is formed on the filter frame body and the image is formed. A second alignment mark corresponding to the first alignment mark is formed on the display frame body portion, and is formed on the image display frame body portion in a state where the plate filter is overlapped on the image display portion. The position of the display panel is detected using the formed second alignment mark, and the first alignment mark is formed on the filter frame body in a state where the plate filter is superposed on the image display unit. The position of the plate filter is detected by using a mark, and the position of the plate filter and the position of the image display unit are detected based on the detected position information of the display panel and the plate filter. A filter alignment method, characterized in that a gap between them is obtained, and the position of the plate filter with respect to the image display unit is corrected based on the obtained value. 20. The first alignment mark is a second alignment mark.
2. The wave plate according to claim 1 is used.
9. A method for aligning a filter according to item 9. 21. The position of the plate-shaped filter is detected by
The alignment method according to claim 19, wherein the light transmitted through the first and second alignment marks is polarized. 22. The detection of the position of the plate filter is
The light transmitted through the alignment mark and the transmitted light of the plate filter that does not transmit the alignment mark are compared with each other.
9. A method for aligning a filter according to item 9. 23. The first and second alignment marks are respectively formed at a plurality of locations on the filter frame body portion and the image display frame body portion, and the respective alignment marks for the image display portion are formed. 20. The filter alignment method according to claim 19, wherein the position of the plate filter is corrected. 24. The alignment mark is composed of a wave plate, and the wave plate is formed simultaneously with the formation of the first wave plate in the filter section. How to align the filter of. 25. The alignment method according to claim 19, wherein the first section and the second section are composed of line-divided even-numbered lines and odd-numbered lines. 26. The filter alignment method according to claim 25, wherein the dividing direction of each line in the filter unit is a horizontal direction or a vertical direction. 27. An image display unit for displaying image information in a first section and a second section, which is used by being overlapped with the image display section and in an area corresponding to the first section of the image display section. The plate-like filter having a filter unit having a first wave plate for rotating the polarization direction of the image information from the first section in a direction different from the polarization direction of the image information from the second section, In the method of aligning the filter so that the position of the wave plate is located so as to correspond to the first section, the first part of the filter part in the state where the plate filter is superposed on the image display part is provided. The position of the plate filter is detected using a wave plate, and the shift between the position of the plate filter and the position of the image display unit is obtained based on the detected position information of the plate filter, Request Alignment method of the filter, characterized in that to fix the position of the plate-shaped filter from the values for the image display unit. 28. An image display unit for displaying image information in a first section and a second section, wherein the image display section is used by being overlapped with the image display section and corresponding to the first section of the image display section. A filter unit having a first wave plate for rotating the polarization direction of the image information from the first section in a direction different from the polarization direction of the image information from the second section, and integrally disposed around the filter section. Filter supporting means for movably supporting a plate-shaped filter having a filter frame part to be installed in a state where the plate-shaped filter is superposed on the image display part, and for alignment formed on the filter frame part Filter position detecting means for detecting the position of the plate filter by using a mark, and the position of the plate filter and the position of the image display unit based on the detected position information of the plate filter. Obtains a deviation between the alignment device of the filter, characterized in that it comprises a control means for operating said filter supporting means so as to correct the position of the plate-shaped filter with respect to the image display unit from the determined value. 29. The filter alignment device according to claim 28, wherein the alignment mark is configured by using a second wave plate. 30. The position of the plate-shaped filter is detected by
29. The filter alignment device according to claim 28, wherein the light transmitted through the alignment mark is polarized. 31. The position of the plate-shaped filter is detected by
It is performed by comparing the light transmitted through the alignment mark with the transmitted light of the plate filter that does not transmit the alignment mark.
9. A filter alignment device according to item 9. 32. The filter position detecting means comprises an irradiating means for irradiating light that is transmitted through the alignment mark and an image capturing means for receiving light that is transmitted through the alignment mark. Item 28. The filter alignment device according to item 28. 33. An image display frame for displaying image information in the first section and the second section, and an image display frame integrally provided around the image display section and provided with a second alignment mark. Display panel supporting means for movably supporting a display panel including a body, and an area corresponding to the first section of the image display section, which is used by being overlapped with the image display section, from the first section. Of a first wavelength plate that rotates the polarization direction of the image information in a direction different from the polarization direction of the image information from the second section, and the first wavelength plate is integrally disposed around the filter section. Filter supporting means for movably supporting a plate-shaped filter having a filter frame portion on which an alignment mark is formed in a state where the plate-shaped filter is superposed on the image display part; and the plate on the image display part. Shape fill Display panel position detecting means for detecting a position of the display panel using a second alignment mark formed on the image display frame body portion in a state of overlapping, and the plate filter in the image display portion. Filter position detecting means for detecting the position of the plate-like filter using the first alignment mark formed on the filter frame body in a state of overlapping, and the detected display panel and plate-like filter Based on the position information of the position of the plate-like filter and the position of the image display unit is determined, the filter so as to correct the relative position of the plate-like filter with respect to the image display unit from the value obtained. A filter alignment device comprising: a support means and a control means for operating at least one of the display panel support means. 34. The first alignment mark is a second alignment mark.
4. The wave plate according to claim 3 is used.
The filter alignment device described in 3.