JPH10221646A - Stereoscopic picture display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute the change-over display of two-dimensional picture display and three-dimensional picture display in a single picture display device by using a liquid crystal element in a parallax barrier which is arranged between a stereoscopic picture display element and an observer. SOLUTION: The device is provided with respective control systems, that is, a 3D display picture display element 1 capable of executing two-eye picture display, a 3D picture selecting shutter 2 for permitting only a right-eye picture to reach a right eye position by shielding a left eye picture within two-eye pictures and only a left-eye picture to reach a left eye position by shielding the right eye picture and an observer position measuring instrument 3 provided with two distance measuring instruments 3a and 3b. Especially, the liquid crystal element such as a ferroelectric liquid crystal display element is use as the 3D picture selecting shutter 2. The back light 4 is arranged on the back surface of the 3D picture displaying display element using the liquid crystal display element. The liquid crystal element being a thin device with high definition for transmitting the display light of the 3D display picture display element 1 is desirable as the 3D picture selecting shutter 2 and respective kinds of liquid crystal display elements are used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional image display device capable of displaying a three-dimensional image by a parallax stereogram method, and more particularly, to the display of both a two-dimensional image and a three-dimensional image without any special operation. Is not only possible,
Further, the present invention relates to a three-dimensional image display device capable of simultaneously displaying both a two-dimensional image and a three-dimensional image.

[0002]

2. Description of the Related Art Conventionally, as a method of displaying a three-dimensional image, an observer had to wear glasses having an information selection function for selecting image information in order to separately input left and right image information to left and right eyes. On the other hand, as a technique without glasses, a method of arranging a slit, a lenticular lens, or the like for giving directivity to left and right image information on a three-dimensional display element has been used and has been improved. Furthermore, recently, the spread of computers and the maintenance of networks have progressed, and various information can be freely viewed through a computer monitor in a wide range from personal use to business use. Various information includes three-dimensional image information.

In the conventional three-dimensional image display device, it is troublesome that the user must wear glasses to view the three-dimensional image display. However, there is a problem that the visual recognition range of the three-dimensional image is narrow. A method of displaying multi-view image information on a three-dimensional image display element in order to widen a three-dimensional image viewing area by a method using the slit or the lenticular lens is adopted. In this case, the same three-dimensional image is used. Also, there is a problem that the resolution is lowered due to an increase in the amount of display information.

Japanese Patent Application Laid-Open No. Hei 5-100009 discloses a method of expanding the viewing range of a three-dimensional image of an observer by detecting the position of the observer with respect to the display device and detecting the position of the parallax barrier of the display device in accordance with the detected position. Controlling the position is disclosed. However, in this method, two-dimensional image display and three-dimensional image display are arbitrarily switched, or a three-dimensional image is displayed at an arbitrary part on the same screen, and another part displays a two-dimensional image. A three-dimensional image and a three-dimensional image cannot be displayed simultaneously.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and is intended to view a three-dimensional image without special work such as wearing glasses with a single image display device. It is an object of the present invention to provide an image display device capable of switching between two-dimensional image display and three-dimensional image display and capable of simultaneously displaying two-dimensional images and three-dimensional images on a single screen. . A further object of the present invention is to realize a wide viewing range following the movement of the observer without deteriorating the display quality of two-dimensional and three-dimensional images.

[0006]

According to the present invention, there is provided a stereoscopic image display apparatus using a parallax stereogram method of a stereoscopic image display system, wherein a stereoscopic image display element and an observer are provided. A liquid crystal element is used for a parallax barrier disposed therebetween.

[0007] In one embodiment of the present invention, the parallax barrier is a slit barrier. This stereoscopic image display device is used for an information transmission device. The information transmitting device has a function of measuring a distance or a position to an observer, and sets an area of an opening (light transmitting part) and a light shielding part of the liquid crystal element as a slit barrier to an amount of movement of the observer. Interlocking and arbitrarily variable. Further, the two-dimensional image display and the three-dimensional image display can be simultaneously performed by arbitrarily changing the areas of the opening of the liquid crystal element as the slit barrier and the light shielding part. As the liquid crystal element as the slit barrier, a light transmission type ferroelectric liquid crystal element similar to that used for monochrome image display is used. Ferroelectric liquid crystal used in the ferroelectric liquid crystal element, when its pretilt angle is α,

[0008]

(Equation 1) 2 ° cone angle and apparent tilt angle θ satisfying the following relationship:
a, and an orientation state where the inclination angle δ of the smectic layer. Further, the liquid crystal element is disposed on a display surface of the image display element, and a pixel for forming a light-transmitting portion and a light-shielding portion of the liquid crystal element has a width of 1 / pixel of a pixel in the image display element. It is set to about 6. The width of the pixel of the liquid crystal element as the slit barrier is such that the S / N ratio of the left and right eye images when the slit barrier is moved following the movement of the observer, that is, the fluctuation of the resolution of the stereoscopic image is not felt. For this reason, it is better to make it smaller than 1/3.

[0009]

FIG. 1 is a schematic diagram showing a stereoscopic image display apparatus according to an embodiment of the present invention. In the following,
Unless otherwise specified, a two-dimensional image is described as 2D and a three-dimensional image is described as 3D.

The apparatus shown in FIG. 1 is capable of displaying a two-lens image.
D display image display element 1, of the two-eye images, the right-eye image is shielded at the right-eye position, and only the right-eye image is shielded. The left-eye image is shielded at the left-eye position, and the left-eye image is shielded. A 3D image selection shutter 2 for allowing only one to reach, and an observer position measuring device 3 having two distance measuring devices 3a and 3b (only the distance measuring devices 3a and 3b are shown in FIG. 1). It comprises a control system of each of the devices 1 to 3. In particular, 3D
As the image selection shutter 2, a liquid crystal element such as a ferroelectric liquid crystal display element is used. The output of the observer position measurement device 3 is fed back to the control system of the 3D image selection shutter 2 and is used as a display control parameter of the 3D image selection shutter 2. In FIG. 1, illustration of these control systems is omitted. In the apparatus shown in FIG. 1, a liquid crystal display element is used as the image display element 1 for 3D display, and the backlight 4 is arranged on the back of the display element for 3D image display. As the image display element 1 for 3D display, a self-luminous display that does not use the backlight 4 such as a CRT, a plasma display, and an EL display can be used.

Next, the shutter 2 for selecting a 3D image in FIG. 1 which plays an important function in the present invention will be described in some detail. The 3D image selection shutter 2 is desirably a thin device which has a function of transmitting display light of the 3D display image display element 1 and has a high definition liquid crystal element.
Various liquid crystal display elements can be used. Particularly, in the present embodiment, a ferroelectric liquid crystal display element is used as a high definition liquid crystal display element having a simple element configuration.

First, the ferroelectric liquid crystal used in the ferroelectric liquid crystal display device will be additionally described. There are various types of liquid crystal display devices, and various types of driving methods. Among the driving methods, a simple matrix method in which the element configuration is simple and the screen is easily enlarged is widely used. Among the liquid crystals that can use the simple matrix method, there is a ferroelectric liquid crystal. A display device of a type that controls transmitted light by combining with a polarizing element by utilizing the refractive index anisotropy of the ferroelectric liquid crystal molecules is known as clark and Lagerwal.
1) (JP-A-56-107216).
No., U.S. Pat. No. 4,367,942). The ferroelectric liquid crystal generally has a non-helical chiral smectic C phase (SmC *) or a chiral smectic H phase (SmH *) in a specific temperature range. It has a property of taking one of the first optical stable state and the second optical stable state and maintaining the state when no electric field is applied, that is, has bistable properties, and has a response to a change in the electric field. And is expected to be widely used as a high-speed and storage type display element.

The fact that the ferroelectric liquid crystal has a memory property is as follows.
When the image display device according to the present embodiment is used completely for 2D image display only, if the ferroelectric liquid crystal display element used as the 3D image selection shutter 2 is set to a memory state in a transmission state, a 3D image is displayed. This is preferable in that 2D display can be realized without lowering the resolution of the display element 1 alone.

Here, the conditions under which the ferroelectric liquid crystal can have memory properties will be described. The orientation state of the ferroelectric liquid crystal is roughly classified into two types, C1 and C2, which will be explained by the difference in the structure of the chevron layer of the smectic phase shown in FIG. Reference numeral 31 in FIG. 2 denotes a smectic phase chevron layer, reference numeral 32 denotes a C1 orientation region, and reference numeral 33 denotes C
Two orientation regions are shown. The smectic liquid crystal generally has a layered structure, but the transition from the SmA phase to the SmC phase or the SmC * phase shortens the layer interval. Therefore, the layer is bent near the center of the upper and lower substrates (30a, 30b) as shown in FIG. Take a structure (chevron structure). here,
The bending direction (orientation state) is C1 as shown in FIG.
And C2, but as is well known, the liquid crystal molecules at the substrate interface form an angle (pretilt) with respect to the substrate due to the uniaxial orientation, and the liquid crystal molecules lean toward the rubbing direction. (It looks like the tip is floating). Because of this pretilt, C1 orientation and C1
The two orientations are not equivalent in elastic energy, and transition may occur at a certain temperature. In addition, transition may occur due to mechanical strain. When the layer structure shown in FIG. 2 is viewed in a plan view, in the rubbing direction A, the boundary 34 is called a lightning defect in a zigzag lightning when moving from C1 orientation to C2, and the boundary 35 when moving from C2 orientation to C1 orientation. Has a wide, gentle curve and is called a hairpin defect.

Here, there is provided a pair of substrates which have been subjected to a uniaxial alignment process for aligning the ferroelectric liquid crystal, and the pair of substrates is arranged so that the uniaxial alignment directions are substantially parallel to each other and are in the same direction. In the liquid crystal display elements arranged opposite to each other as described above, the pretilt angle of the ferroelectric liquid crystal is α, the tilt angle (１ ／ of the cone angle) is Θ, the layer tilt angle of the SnC * phase is δ, and the ferroelectric liquid crystal is Has an orientation state represented by the following formula, there are four states having a chevron structure in the C1 orientation state.

[0016]

(Equation 2) The four C1 orientation states are different from the conventional C1 orientation state, and two of the four C1 orientation states form a bistable state (uniform state). Here, assuming that the apparent tilt angle at the time of no electric field is θa, a state showing the relationship of the following equation among the four states of the C1 alignment state is called a uniform state.

[0017]

(Equation 3) In the uniform state, it is considered from the optical properties that the liquid crystal molecules (directors) are not twisted between the upper and lower substrates. FIG. 3A is a schematic diagram showing a director arrangement in each state of the C1 orientation. In the figure, reference numerals 51 to 54 denote the directors in each state projected on the bottom surface of the cone and viewed from the bottom surface direction, and are called C directors. In FIG. 3, reference numerals 51 and 52 denote a splay state, and reference numerals 53 and 54 denote C director arrangements considered to be in a uniform state. As can be seen from the figure, in the two states 53 and 54 of the uniform, the position of the liquid crystal molecules at the upper or lower substrate interface is replaced with the position in the spray state. FIG. 3B shows the C2 orientation, and there are two states 55 and 56 by internal switching without switching at the interface. This uniform state in the C1 orientation produces a larger apparent tilt angle θa than the conventionally used bistable state in the C2 orientation, resulting in high luminance and high contrast.

The driving characteristics of the ferroelectric liquid crystal display device using the uniform state exhibiting the above-mentioned bistable state include:
The transition from the first stable state to the other stable state is achieved by applying a certain or more electric field. Further, to return to the original stable state, the polarity of the applied electric field may be reversed.

As described above, the ferroelectric liquid crystal display element has advantages as a 3D image selection shutter, such as having a simple structure, easily achieving high definition, and having a memory property.

FIG. 4 is an operation principle diagram of a stereoscopic image display according to the present invention. In FIG. 4A, the left-eye image information (L) and the right-eye image information (R) are displayed on the display element 1 for 3D image display. A 3D image selection shutter 2 is disposed between the 3D image display element 1 and the observer 5, and is divided into an open area and a light-shielded area. The left eye (L) of the observer 5 can see the left-eye image information (L) of the 3D image display element 1 from the opening 2a of the 3D image selection shutter 2 but the right eye of the 3D image display element 1 The image information (R) cannot be seen by the light shielding portion 2b of the 3D image selection shutter 2. Similarly, the right eye (R) of the observer 5 sees only the right-eye image information (R) of the display element 1 for displaying a 3D image from the opening of the shutter 2 for selecting a 3D image. The left-eye image information (L) of the display element 1 for 3D image display cannot be viewed by the light shielding portion 2b of the 3D image selection shutter. Thereby, the observer can visually recognize the image displayed on the display element 1 for 3D image display as a 3D image.

When the observer 5 moves as shown in FIG. 4B, the left eye and the right eye of the observer 5 are both left-eye (L) and right-eye image information (R) on the display element 1 for 3D image display. Are mixed, and cannot be visually recognized as a 3D image. Therefore, in the present embodiment, the movement of the observer's viewpoint is measured by a distance measuring system used in a camera or a video camera, the distance and the amount of movement to the observer are calculated, and the 3D image selection shutter 2 is used. Feedback is applied as display information of the ferroelectric liquid crystal display device to be used. That is, the display of the 3D image selection shutter 2 is changed from an ON state (transparent state) to an OFF state (light-shielded state) from an ON state (transmitting state) to an OFF state (light shielding state) as the observer moves the viewpoint as shown in FIG. , So that some of the pixels of the light shielding portion 2b change from the OFF state to the ON state. Accordingly, a new opening and a light-shielding portion are provided so that the left and right image information can be visually recognized separately by the left and right eyes from the viewpoint after the movement of the observer 5, and can be visually recognized as a 3D image.

In the present embodiment, when it is desired to display only a part of the image display device in 3D, an opening and a light-shielding portion may be formed and displayed only in a corresponding area. If all other areas are turned on, 2D display is performed there, and mixed display of 2D display and 3D display on a single screen becomes possible. If all the pixels are turned on, 2D display is possible. In this case, the 3D image display element 1 may output image information that is no different from a conventional display.

As described above, according to the present embodiment, in an image display device used for an information transmission device or the like, 3D display can be performed without using glasses or the like, and mixed display of 2D and 3D can be performed. 2D single display was made possible without deteriorating the overall image quality. In addition, the opening and the light-shielding portion on the entire surface of the 3D image selection shutter liquid crystal element are changed in synchronization with the movement of the viewpoint in accordance with the movement of the viewpoint by the observer.
It was confirmed that the viewing area of D display was enlarged.

Further, a transmissive flat display can be used as a shutter for selecting a 3D image. By using a ferroelectric liquid crystal display element having a memory property in the transmissive flat display, 2D display and 3D display can be performed. Since there is no need to rewrite the display state of the 2D display portion in the case of coexistence, the power consumption of the entire system can be suppressed low. Also, since the ferroelectric liquid crystal display element has a simple matrix drive configuration, high-resolution A 3D image selection shutter was realized.

[0025]

EXAMPLE 1 FIG. 6 shows a display element configuration of a ferroelectric liquid crystal transmission flat display used as a 3D image selecting shutter 2 in the above embodiment. Hereinafter, a method for forming the display element in FIG. 6 will be described. The display element shown in FIG. 6 includes two glass substrates 11a and 11b each having a thickness of 1.1 mm. On these substrates 11a and 11b, about 1500A-thick striped ITO transparent electrodes 12a and 12b are provided. Are formed by a sputtering method. Insulating layers 10a and 10b are arranged between the transparent electrodes 12a and 12b and the orientation control films 13a and 13b. The insulating layer is PZT-6 (manufactured by Catalyst Kasei Co., Ltd.)
Is printed on a substrate on which ITO is formed by a printing method using a color developing plate, and is preliminarily dried at 80 ° C. for 3 minutes.
The main baking was performed at 0 degrees to form a film. To form an alignment control film thereon, a polyamic acid LQ manufactured by Hitachi Chemical Co., Ltd. was used.
It was formed by using a 1% NMP solution of 1802 and baking at 270 ° C. for 60 minutes after applying with a spinner.

When the upper and lower substrates (11a and 11b) are combined under the same conditions until the alignment control film is formed by the above-described method, the alignment control films 13a and 13b are combined.
The orientation control film of each substrate was subjected to a uniaxial orientation treatment by a rubbing method so that the orientation directions by 13b became substantially parallel.
A rubbing cloth made of nylon 66 and having a bristle length of 4 mm was wound around a stainless steel roller having a diameter of 15 cm, and the above uniaxial orientation treatment was performed at 1000 rpm. After a spacer for holding a gap and an adhesive resin are sprayed on one of the pair of substrates 11a and 11b that have been subjected to the orientation processing as described above, the substrates 11a and 11b are overlapped with each other, and the substrates are pressure-bonded. After sealing the periphery of the substrate with a sealant, liquid crystal was injected from an injection port indicated by reference numeral 18 in FIG. 6, and the injection port was sealed to produce a liquid crystal display device.

The display image size of the liquid crystal display element is 42
μm × 42 μm, 8 μm between pixels. This is shown in FIG.
It was used as a shutter 2 for D image selection.

As the liquid crystal injected into the device prepared in this embodiment, a ferroelectric liquid crystal (pyrimidine-based mixed liquid crystal A) was used.
The phase transition temperature and physical properties of the ferroelectric liquid crystal used in this example are shown below.

[0029]

[Table 1] Using the pyrimidine-based mixed liquid crystal A, an element having an alignment control film having a pretilt angle on a display pixel of, for example, 17 ° was formed.

As the display element 1 for 3D image display, CR
Any of T, plasma display, EL display, liquid crystal display and the like can be used. In this embodiment, the same structure as that of the above-described ferroelectric liquid crystal display and the one produced by the same method were used. However, the display pixel size was 92 μm × 292 μm, the distance between pixels was 8 μm, and one pixel was formed with red, blue, and green pixel configurations to make one pixel size 300 μm × 300 μm. The color filters are glass substrates 11a and 11b and transparent electrodes 12a and 12b.
And beforehand.

The 3D image display device 1 and the 3D image selection shutter 2 prepared as described above, the backlight 4 arranged on the back of the 3D image display device 1,
Two ranging systems 3a and 3b used for cameras for measuring the distance to the observer, a 3D image information output device (not shown), a ferroelectric liquid crystal display element display control device for a 3D image selection shutter, and a ranging device A system having the configuration shown in FIG. 1 was assembled using the system control system.

FIG. 7 shows the display state. Now, FIG.
As shown in (A), left-eye image information and right-eye image information are displayed using two picture elements of the 3D image display element 1 so that 3D image recognition can be performed from a certain observer position. Actually, the left image and the right image are arranged and displayed in a vertical stripe. One display picture element (300 μm × 30
0 μm) corresponds to 36 pixels (50 × 6 μm × 50 × 6 μm) of the 3D image selection shutter 2. That is, in order to allow R to reach the right eye, six rows of pixels indicated by reference numerals 1 to 6 of the 3D image selection shutter 2 are opened (pixels are turned on), and 36 pixels at both ends (a To f and A to F) are in a light-shielded state (pixels are in an OFF state). At this time, the ferroelectric liquid crystal display element as the 3D image selection shutter 2 is displaying a stripe. FIG. 7B schematically shows the whole image. From this state, it is assumed that the viewpoint (position) of the observer has moved leftward toward the paper surface. In the apparatus according to the present embodiment, the moving amount of the observer is calculated from the output difference between the two distance measuring systems 3a and 3b (see FIG. 1), and the opening is shielded according to the moving amount, and the light shielding unit is opened. Redisplay. That is, in accordance with the movement amount, the pixel in column a is turned on, the pixel in column b is turned on, the pixel in column c is turned on, the pixel in column d is turned on, the pixel in column e is turned on, and the pixel in column f is turned on. Switch, and correspondingly,
6 row pixel OFF state, 5 row pixel OFF state, 4 row pixel OFF state, 3 row pixel OFF state, 2 row pixel O
While switching the FF state and the one column pixel to the OFF state, 3
Redisplay of the ferroelectric liquid crystal element of the D image selection shutter 2 is performed. Conversely, pixels in column A are sequentially shifted to O according to the amount of movement to the right.
N state, B column pixel ON state, C column pixel ON state, D
Column pixel ON state, E column pixel ON state, F column pixel O
N state, and correspondingly, one row of pixels is in the OFF state,
2 row pixel OFF state, 3 row pixel OFF state, 4 row pixel OFF state, 5 row pixel OFF state, 6 row pixel O
The ferroelectric liquid crystal element of the 3D image selection shutter is displayed again in the FF state. Thereby, even if the observer moves, the 3D image is not inverted or the image is not blurred, and the 3D image is excellent.
It was confirmed that D image display recognition was possible.

As a comparative evaluation, when the 3D image information is displayed on the 3D image selection shutter 2 in a fixed stripe display, and the observer moves left and right from the observation position where the observer can recognize the 3D information, the slightest movement occurs. Also, the 3D image information was disturbed, and the image was blurred. This tendency was remarkably observed as the resolution of the display element 1 for 3D image display was increased. Conversely, as the resolution is reduced, the stripe display width of the 3D image selection shutter 2 becomes rough, and the sense of obstruction increases. In order to avoid these problems, a system that follows the movement of the viewpoint with high sensitivity by using a high-resolution liquid crystal element is necessary.
A good 3D system that can be used as a D-image selection shutter and can change the aperture and light-shielding portion according to the amount of movement of the viewpoint.
It was confirmed that the device was an image display device.

In FIG. 7B, a stripe display including a light-shielding portion and an opening is provided on the entire surface of the liquid crystal element 2, and
Although it is compatible with D image display, if a stripe display including an opening and a light-shielding portion is performed for only a part of the liquid crystal element 2, the stripe display unit can be used as a 3D image information display window. . At this time, if the pixels in the area other than the stripe display of the liquid crystal element 2 are opened,
The area can be used as a normal 2D image display monitor without any change. Further, by opening all the 3D image selection shutters (pixels of the liquid crystal element 2), the entire surface of the display element 1 can be used as a 2D image monitor.

Embodiment 2 A method for enlarging the viewing range of 3D image information by using the same system as that used in Embodiment 1 and moving the observer vertically is described below. FIG. 8 is an explanatory diagram of an example of using the system for displaying a 3D image according to the present embodiment. FIG. 8B is a schematic view showing the display of the entire system, and FIG.
FIG. 4 is an explanatory diagram of a display state change enabling image information recognition.

Now, when the observer's viewpoint moves to the upper left of the paper, the 3D image selection shutter 2 changes the display of the * region in FIG. 8A from the OFF state to the ON state and is in the ON state. 5,6,15,16,25,26,35,3
6, 41, 42, 43, 44, 51, 52, 53, 54
Is changed to the OFF state. Thus, the R and L images viewed from the previous viewpoint were input to the right and left eyes, respectively, and were recognized without losing the 3D image information.

Also in this embodiment, mixed display of 2D / 3D is possible, and independent display of 2D and 3D is also possible.

In particular, in the present embodiment, the use of the ferroelectric liquid crystal display element makes it possible to relatively easily realize high definition and to perform excellent 2D / 3D display switching and 2D / 3D mixed display. And by following the viewpoint, 3
The D viewing range was expanded. In addition, due to the memory characteristic of the ferroelectric liquid crystal, the original resolution of the display device for 3D image display was not reduced.

[0039]

As described above, according to the present invention,
By using a liquid crystal element as a 3D image selection shutter, switching display of 2D / 3D display and mixed display of 2D / 3D images can be achieved, and a display element suitable for following the viewpoint movement of an observer can be realized, thereby achieving 3D display. With respect to (3), it is possible to provide a stereoscopic image display device in which the viewer's 3D display viewing area is enlarged as compared with the conventional one.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a 3D / 2D image display system according to an embodiment of the present invention.

FIG. 2 is a diagram showing an orientation model of a smectic layer.

3A is a schematic diagram showing the arrangement of directors at each position between substrates in each state of C1 orientation, and FIG.
It is a schematic diagram which shows two orientations.

FIG. 4 is a diagram illustrating the operation principle of 3D display according to the present invention.

FIG. 5 is an operation explanatory diagram of a liquid crystal element as a 3D image selecting shutter in the system of FIG. 1;

6 is a configuration diagram of a ferroelectric liquid crystal element used as a 3D image selection shutter in FIG.

FIG. 7 is a diagram illustrating a device configuration and an operation explanatory diagram according to the first embodiment of the present invention.

FIG. 8 is a diagram illustrating a device configuration and an operation explanatory diagram according to a second embodiment of the present invention.

[Explanation of symbols]

1: 2: liquid crystal element (3D image selection shutter, ferroelectric liquid crystal display element), 2a: opening, 2b: light shielding part, 3
a, 3b: distance measuring device, 4: backlight, 10a,
10b: insulating layer, 11a, 11b: glass substrate, 12
a, 12b: transparent electrode, 13a, 13b: alignment control film,
14: spacer, 15: adhesive resin, 16: sealant,
17: liquid crystal layer, 18: injection port, 19: insulating layer, 30a,
30b: display element substrate from glass substrate to alignment control film, 31: smectic layer, 32: C1 alignment, 33: C
2 orientation, 34: lightning defect, 35: hairpin defect.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Yoshinari Yoshino 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (72) Inventor Tatsumi Ozaki 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (72) Inventor Yoshinori Shimamura 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (72) Inventor Hidekatsu Arai 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. Inside

Claims (6)

[Claims] An image display device capable of displaying a two-lens image,
It is arranged between the image display element and the observer, and can shield the field of view of the observer from the right eye position to the image for the left eye of the binocular image and for the right eye from the left eye position A parallax barrier capable of blocking the field of view of the image,
A stereoscopic image display device for displaying a three-dimensional image by a parallax stereogram method, wherein a liquid crystal element is used for the parallax barrier. 2. The apparatus according to claim 1, further comprising: a position measuring means for the observer; and a control means for controlling a light transmitting part and a light shielding part of the liquid crystal element according to the position of the observer. Stereoscopic image display device. 3. The three-dimensional image according to claim 1, wherein the two-dimensional image and the three-dimensional image can be displayed simultaneously by changing the areas of the light transmitting part and the light shielding part of the liquid crystal element. Display device. 4. The three-dimensional image display device according to claim 1, wherein said liquid crystal element is a ferroelectric liquid crystal display element. 5. The ferroelectric liquid crystal of the liquid crystal display element has a pretilt angle of α, a cone angle of 2 °, an apparent tilt angle of θa, and an inclination angle of the smectic layer of δ <α + δ. 5. The three-dimensional image display device according to claim 4, wherein the three-dimensional image display device has an orientation state satisfying a relationship of Θ>θa> Θ / 2. 6. The liquid crystal element is disposed on a display surface of the image display element, and a pixel for forming a light-transmitting portion and a light-shielding portion of the liquid crystal element has a width corresponding to a pixel in the image display element. 3. The method according to claim 1, wherein
The stereoscopic image display device according to any one of claims 1 to 5.