JPH075417A - Liquid crystal stereoscopic picture display device - Google Patents

Abstract

PURPOSE:To display a stereoscopic picture in an excellent picture state by keeping a distance between substrates uniform without the deviation of a spacer in the case of realizing stereoscopic vision by using a lenticular lens and an LCD. CONSTITUTION:This liquid crystal stereoscopic picture display device 11 is provided with a liquid crystal display panel 13 behind the lenticular lens 12 where plural covex lenses lie in a line in a lateral direction. An area for displaying a picture for a right eye 14 and an area for displaying a picture for a left eye 15 are arranged on the display surface of the panel 13 corresponding to the areas of the respective convex lenses 12a, and the picture for the right eye and the picture for the left eye are displayed in the respective areas. Since a stripe state spacer 16 is formed between the upper and the lower substrates of the panel 13 in a section part between the respective areas 14 and 15 so as to keep the distance between the substrates uniform, the granular spacer is not needed, and the stereoscopic vision is realized with the excellent picture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal stereoscopic image display device, and more particularly to a liquid crystal stereoscopic image display device for displaying a stereoscopic image using a liquid crystal display panel and a lenticular lens.

[0002]

2. Description of the Related Art In recent years, image display devices for displaying moving images, still images, etc., perform binary image display, such as black and white, or color image display, as the amount of image information displayed increases and the technology advances. In addition, recently, a three-dimensional stereoscopic image is displayed from the two-dimensional image.

As a method of obtaining this stereoscopic image, for example, holography is used, or images for the right eye and images for the left eye are alternately displayed on a display in a time-division manner, and the right eye is used with glasses or the like using a deflection plate. The image for the left eye and the image for the left eye are separated and taken in, or the lenticular lens having a sharp directivity is used to provide the image information corresponding to the left and right eyes to obtain a stereoscopic image with the naked eye. There are things.

A CRT (CathodeRay Tube) or the like is used as a display device used for this stereoscopic vision, and a liquid crystal display device (LCD: Liquid) has been used as a display replacing the CRT with the miniaturization of electronic devices.
Cristal Display) is attracting attention. This LCD is
The power consumption is much lower than that of the CRT, and there is an advantage that the size can be reduced.

The liquid crystal display panel constituting this LCD is
A sealing material is formed on the outer peripheral edge of two transparent substrates (for example, glass substrates), and the substrates are bonded together.
They are opposed to each other with an interval of about several μm. Electrodes for controlling the alignment of liquid crystal molecules are arranged inside the substrate so as to face each other. The liquid crystal composition sealed between the electrodes includes, for example, twisted nematic liquid crystal and chiral smectic liquid crystal. An electric field is applied to the liquid crystal composition to change the alignment state of the liquid crystal molecules to create a light transmitting portion and a light shielding portion, and a binary image display or a color image display is performed using a color filter.

As described above, in the above liquid crystal display panel, since the two upper and lower substrates are arranged so as to face each other with a fine gap therebetween, the gap between the substrates is likely to be non-uniform, and the upper and lower electrodes are short-circuited, If the thickness of the liquid crystal layer varies depending on the location, the image quality deteriorates. For this reason, conventionally, non-uniformity of the substrate spacing is prevented by bonding the upper and lower substrates in a state in which the granular spacers having the same diameter of about a dozen μm to several μm and having the same diameter are evenly dispersed on one substrate. A liquid crystal cell for

[0007]

However, in such a conventional liquid crystal stereoscopic image display device, for example,
When displaying a moving image using holography, the display device becomes expensive, and in the time division method using the deflector, the device configuration becomes complicated and expensive, and it is necessary to use special glasses, etc. Since the images of the right eye are switched alternately at high speed, flicker on the screen becomes a concern. Further, the stereoscopic image display using the lenticular lens has the advantages that a stereoscopic image can be obtained with the naked eye, and that the device configuration is relatively simple and inexpensive. But,
The stereoscopic method obtained using this lenticular lens requires that the images for the right eye and the left eye be accurately aligned in accordance with the convex lens positions of the lenticular lens. If the pitches of and shift, the stereoscopic image cannot be obtained, and the original image cannot be seen accurately. Especially, when trying to display a stripe image for a lenticular lens using a CRT display, it is very difficult to match the pitch of the display image according to the pitch of each convex lens of the lenticular lens, and the pitch of the convex lens is small. However, there is a problem that it becomes more difficult to align the image pitch.

FIG. 8 is a diagram for explaining a problem of a liquid crystal stereoscopic image display device using a conventional lenticular lens.

As shown in FIG. 8, in the conventional liquid crystal stereoscopic image display device 1, a lenticular lens 2 having a plurality of semi-cylindrical convex lenses continuously arranged in the lateral direction is arranged in front of a display image 3. . This lenticular lens 2
Has a bilaterally symmetrical shape in which the central portion of each convex lens is most raised, and the lens optical axis 4 is at the center thereof. As described above, the conventional convex lenses forming the lenticular lens 2 have the same shape both in the central portion and the peripheral portion of the image display surface. Therefore, in the convex lens at the center of the display screen, the right-eye image 5a and the left-eye image 6a drawn on the left and right immediately below the convex lens are the lenticular lenses 2.
Since it is bent by and enters the right eye and the left eye of the observer 7 separately, the naked-eye stereoscopic vision becomes possible. However, with the lenticular lens 2, as the viewpoint positions of the right eye and the left eye move from the central part of the display screen to the peripheral part, the image is viewed from the diagonal direction of the lens, so that the right eye and the left eye can see the image. Visible right-eye image 5b and left-eye image 6
Since b is displaced from directly below the convex lens, it is necessary to adjust the image position displayed on the screen between the central portion and the peripheral portion.

In this respect, it is easy to configure the liquid crystal display panel so that the display positions of the images for the right eye and the left eye are preliminarily aligned with the position of the lenticular lens. However, the conventional L
CD only disperses the granular spacers made of true spheres having the same diameter and disperse them evenly between the alignment films of the upper and lower substrates.
There is a problem that the granular spacers move between the substrates when the liquid crystal or the like is filled, and the spacers are unevenly distributed, so that the substrate intervals cannot be maintained uniformly.

Therefore, the present invention has been made in view of the above problems, and when stereoscopic viewing is performed using a lenticular lens and an LCD, images for the right eye and the left eye corresponding to each convex lens position. The liquid crystal stereoscopic display enables accurate stereoscopic viewing by accurately displaying, and uses a spacer that has less influence on the display image and is less likely to be unevenly distributed, so that the substrate spacing of the liquid crystal display panel is always kept constant. An object is to provide an image display device.

[0012]

A liquid crystal stereoscopic image display device according to claim 1, wherein transparent electrodes are arranged inside two substrates so as to face each other, and a voltage is applied to liquid crystal sealed between the substrates to form an image. A liquid crystal stereoscopic image display device for displaying a stereoscopic image using a liquid crystal display panel for displaying a lenticular lens in which a plurality of semi-cylindrical convex lenses are continuously arranged in the lateral direction on the front surface of the display unit of the liquid crystal display panel. Then, corresponding to each convex lens area of the lenticular lens, a stripe-shaped image display area for the right eye and an image display area for the left eye are formed in a pair in the vertical direction of the liquid crystal display panel, The above object is achieved by providing a stripe-shaped spacer between each of the upper and lower substrates for each partition that partitions the image display area for the right eye and the image display area for the left eye.

In this case, for example, as described in claim 2, the liquid crystal display panel is of a matrix display type, and the image display area for the right eye and the image display area for the left eye are respectively laterally arranged. The above object is achieved by providing the spacers in the vertical direction between pixels that are alternately arranged for each pixel and that are adjacent in the horizontal direction.

Further, for example, as described in claim 3, a liquid crystal display in which transparent electrodes are arranged inside two substrates so as to face each other, and a voltage is applied to liquid crystal sealed between the substrates to display an image. A liquid crystal stereoscopic image display device for displaying a stereoscopic image using a panel, wherein a lenticular lens having a plurality of semi-cylindrical convex lenses continuous in the lateral direction is arranged on the front surface of the display unit of the liquid crystal display panel, and the lenticular lens is provided. Corresponding to each convex lens area of the lens, a stripe-shaped right-eye image display area and left-eye image display area are formed in a pair in the vertical direction of the liquid crystal display panel, and between the upper and lower substrates of the liquid crystal display panel. The above object is achieved by providing a stripe-shaped spacer at each boundary between adjacent convex lenses of the lenticular lens.

Further, for example, as described in claim 4, the liquid crystal panel is of a matrix display type, and the right eye image display area and the left eye image display area are arranged in a horizontal direction for each pixel. The above-mentioned object is achieved by providing stripe-shaped spacers between every two pixels in the horizontal direction so that each convex lens of the lenticular lenses corresponds to a boundary portion adjacent to each other. ing.

Further, for example, as described in claim 5, between the pixels in which the spacers are arranged, an insulating region wider than a normal pixel interval is formed so that a stripe spacer can be formed. By being formed, the above object is achieved.

Further, for example, as described in claim 6, the lenticular lens provided on the front surface of the liquid crystal display panel has a peripheral portion according to a difference in viewpoint between a central portion and a peripheral portion of the liquid crystal display panel. The above object is achieved by changing the surface shape of the convex lens so that the optical axis position of each convex lens approaches the central position of the liquid crystal display panel as it goes to the section.

[0018]

According to the first aspect of the invention, a lenticular lens having a plurality of semi-cylindrical convex lenses continuously arranged in the lateral direction is arranged on the front surface of the display portion of the liquid crystal display panel, and corresponds to each convex lens area of the lenticular lens. The image display area for the right eye and the image display area for the left eye are formed in pairs in the vertical direction of the liquid crystal display panel, and the image display area for the right eye and the image for the left eye between the upper and lower substrates of the liquid crystal panel are formed. A stripe-shaped spacer is provided for each partition that partitions the image display area. Therefore, the right eye and left eye image display areas are accurately formed corresponding to the convex lens portions of the lenticular lens, so that proper stereoscopic image display can be performed, and between the upper and lower substrates, Since the stripe-shaped spacers are provided along the divisions between the display areas, the influence on the display image is small, and if the liquid crystal is injected along the stripe direction of the spacers, the spacers are unevenly distributed. A proper image can be displayed by keeping the distance between the substrates uniform and without causing the change or movement.

According to a second aspect of the invention, the liquid crystal panel according to the first aspect is a matrix display type, and the image display area for the right eye and the image display area for the left eye are alternately arranged in the horizontal direction for each pixel. And spacers are provided in the vertical direction in an insulating region between pixels that are adjacent to each other in the horizontal direction. For this reason, since the spacers are finely inserted in the vertical direction between each pixel, it is not necessary to use granular spacers that are easy to move, and the upper and lower substrates can always be held at a constant interval, and the spacers are not biased. Since the quality is stable and the spacer is provided in the partition between the image display areas, the influence on the display image can be reduced.

According to the third aspect of the present invention, a lenticular lens having a plurality of semi-cylindrical convex lenses continuously arranged in the lateral direction is arranged on the front surface of the display portion of the liquid crystal display panel, and each lenticular lens corresponds to each convex lens region. In the vertical direction of the liquid crystal display panel, stripe-shaped right eye image display areas and left eye image display areas are formed in pairs, and the convex lenses of the lenticular lenses are adjacent to each other between the upper and lower substrates of the liquid crystal display panel. Stripe-shaped spacers are provided at each boundary. Therefore, in the liquid crystal display panel, the image display area for the right eye and the image display area for the left eye are formed in a pair so as to correspond to the respective convex lens positions of the lenticular lens,
Proper stereoscopic image display is performed, and stripe-shaped spacers are arranged along the boundary between adjacent convex lenses, so there is little effect on the displayed image. By injecting the liquid crystal by using the liquid crystal, uneven distribution or movement of the spacer does not occur, and the substrate intervals are kept uniform, and proper image display is performed.

According to a fourth aspect of the present invention, in the liquid crystal panel of the matrix display type, the image display area for the right eye and the image display area for the left eye are alternately arranged in the horizontal direction for each pixel.
A stripe-shaped spacer is provided between every two pixels in the horizontal direction so as to correspond to the boundary between the convex lenses of the lenticular lens. For this reason, since the spacers are provided vertically in stripes at intervals of every two pixels in the horizontal direction, the granular spacers that are easy to move are unnecessary, the bias of the spacers is eliminated, and the upper and lower substrates are uniformly held at a predetermined interval. As a result, good image quality can be obtained, and since the spacers are provided along the boundary of each convex lens, the influence on the displayed image can be reduced.

According to the fifth aspect of the invention, between the pixels in which the spacers are provided, insulating regions having a wider spacing than a normal spacing are provided so that stripe spacers can be formed. Therefore, the spacers can be easily and surely formed between the predetermined pixels, and the influence of the stripe-shaped spacers on the display image can be further reduced.

According to the sixth aspect of the present invention, each convex lens of the lenticular lens provided on the front surface of the liquid crystal display panel has an optical axis of each convex lens according to a difference in viewpoint between a central portion and a peripheral portion of the display screen. The surface shape of the convex lens is deformed so as to be closer to the center position of the liquid crystal display panel as the position goes to the periphery. Therefore, the deviation of the viewpoint caused between the central portion and the peripheral portion of the display screen is corrected, and a proper stereoscopic image is displayed on the entire screen.

[0024]

EXAMPLES The present invention will be described below based on examples.

1 to 7 are views for explaining a liquid crystal stereoscopic image display device of the present invention.

First, the structure will be described.

FIG. 1 is an overall configuration diagram of a liquid crystal stereoscopic image display device according to this embodiment. In FIG. 1, a liquid crystal stereoscopic image display device 11 includes a lenticular lens 12 having a plurality of semi-cylindrical convex lenses arranged in a row in the lateral direction, and a liquid crystal arranged on the back surface of the lenticular lens 12 to display a stereoscopic image. And a display panel 13. The liquid crystal display panel 13 has a right-eye image display area (R) 14 and a left-eye image display area (L) 15 in stripes so as to correspond to the areas of the respective convex lenses 12a of the lenticular lens 12. And are arranged. The right-eye image display area (R) 14 and the left-eye image display area (L) 1
In FIG. 5, as shown in FIG. 1, a right-eye image 17 and a left-eye image 18 when a three-dimensional object (here, glass) is viewed from two viewpoints (right eye and left eye) are displayed. Has been done. The paired right-eye image 17 and left-eye image 18 correspond to the position of one convex lens 12a of the lenticular lens 12, and due to the refraction of light by the lenticular lens 12, the right-eye image is formed. The left and right images are distributed with a predetermined directivity so that the target image 17 enters the observer's right eye and the left eye image 18 enters the observer's left eye. For this reason, when viewed from the observer, parallax occurs between the left and right eyes as if an actual three-dimensional object is seen in front of the eyes, and as shown by a chain double-dashed line, it pops out in front of the lenticular lens 12. You can see the stereoscopic image of the cup.

FIG. 2 is an explanatory view of the principle of stereoscopic viewing using a lenticular lens. As shown in FIG.
The liquid crystal display panel 13 provided on the back surface of the lenticular lens 12 has a right-eye image display area (R) 14 and a left-eye image display area (R) 14 arranged in stripes in the vertical direction of the display screen so as to correspond to the respective convex lenses 12a. The image display region (L) 15 is formed, and the image for the right eye and the image for the left eye are displayed in pairs. The plurality of right eye images displayed in the right eye image display area (R) 14 of each convex lens is 1
Images into the right eye, and a plurality of images for the left eye displayed in the image display area (L) 15 for the left eye becomes one image and enters the left eye. Display panel 13
Can be used for autostereoscopic viewing.

Next, FIG. 3 is a diagram showing an arrangement configuration example of spacers provided between the upper and lower substrates of the liquid crystal stereoscopic image display device according to this embodiment.

As shown in FIG. 3, a right-eye image display area (R) 14 and a left-eye image display area (L) 15 are arranged in pairs so as to correspond to the respective convex lens areas of the lenticular lens 12. The striped spacers 16 extending in the depth direction of the drawing are provided on the upper and lower substrates 19 for each of the partitioning sections that separate the right-eye image display area 14 and the left-eye image display area 15.
It is provided between 20. In this way, the liquid crystal display panel of the present embodiment is for dividing the images viewed from different viewpoints for the right eye and the left eye into stripes and alternately displaying them, and partitioning the different image display areas. Striped spacers 16 are arranged in the vertical direction along the portions. In this way, the spacers 16 are provided in the divisions of different image display areas.
Is provided, there is almost no effect on the display image, and a proper stereoscopic image can be obtained.

Further, in this embodiment, as shown in FIG.
The convex lenses of the lenticular lens 12 are not all configured to have the same shape, but different lens shapes are adopted in the central portion and the peripheral portion of the display screen.

That is, as shown in FIG. 3, since the semicylindrical lenticular lens 12 is normally constructed symmetrically, the lens optical axis 22 passes through the center of the lens. When the symmetric lenticular lens is arranged in the center of the display screen, the right-eye image and the left-eye image can be accurately separated and taken out. But,
As shown in FIG. 8, left and right symmetrical lenticular lenses 2
When is also arranged in the peripheral part of the display screen, the viewpoint shift occurs in the peripheral part, so that the image for the right eye and the image for the left eye displayed on the liquid crystal panel immediately below the lenticular lens 2 are displayed in the respective eyes. There is a problem in that a portion that cannot be stereoscopically viewed is generated in the peripheral portion of the display screen because it cannot be entered.

On the other hand, it is possible to shift the display position of the image to be displayed on the liquid crystal display panel, but it is difficult to align the display image and the lenticular lens, and the degree of image shift is displayed. Since it gradually changes from the center of the screen to the periphery, it is actually difficult to shift the display image in this way.

Therefore, in the lenticular lens used in the liquid crystal stereoscopic image display device of this embodiment, the lens shape of the lenticular lens 12 is changed according to the difference in viewpoint between the central part and the peripheral part of the display screen. Right eye image display area 14 displayed on the liquid crystal display panel 13 under the convex lens
And the image in the image display area for the left eye 15 is always separated into the left and right eyes of the observer.

Specifically, as shown in FIG. 3, the lenticular lens disposed in the center of the display screen uses a symmetrical convex lens whose lens optical axis 22 passes through the lens center. The lenticular lens around the
The lens shape is deformed so that the lens optical axis 23 is located at the center position of the display screen.

As described above, the lenticular lens 1
2, the images of the right-eye image display area 14 and the left-eye image display area 15 corresponding to the positions of the respective convex lenses 12a are displayed from the central portion to the peripheral portion of the display screen as shown in FIG. It became possible to always focus on the left and right eyes of the observer, and it became possible to properly stereoscopically view the entire display screen.

FIG. 4 is a view showing an arrangement configuration example of spacers provided between upper and lower substrates of a liquid crystal stereoscopic image display device according to another embodiment.

As shown in FIG. 4, upper and lower substrates 19, 2 are provided.
The stripe-shaped spacers 24 provided between the zeros have the right-eye image display area 14 and the left-eye image display area 15 on the liquid crystal panel 13 so as to correspond to the respective convex lens areas of the lenticular lens 12. Displayed one by one,
The respective lenticular lenses 12 are arranged so as to extend in the depth direction of the drawing at each boundary portion shown by the broken line in the drawing which is adjacent to each other.
The stripe-shaped spacers in this embodiment are arranged along the boundary between the convex lenses of the lenticular lens 12, and the image for the right eye and the image for the left eye are distributed for each convex lens unit. Has almost no effect on the display image, and a proper stereoscopic image can be obtained.

Also in the embodiment of FIG. 4, the shape of the lenticular lens 12 is different between the central portion and the peripheral portion of the display screen, as in the case of FIG.

FIG. 5 is a diagram for explaining a configuration example of a liquid crystal display panel of the liquid crystal stereoscopic image display device of FIG.

As shown in FIG. 5, here, the liquid crystal panel is a thin film transistor (TFT) type active matrix L.
It is composed of a CD, and the pixel electrodes 25 are arranged in a matrix in the vertical and horizontal directions of one glass substrate 20,
Each pixel electrode 25 is driven on / off by the TFT 26. The red (R), green (G), and blue (B) colors for full-coloring the liquid crystal display panel are provided on the other glass substrate 19 which is arranged to face the glass substrate 20 at a predetermined interval. Filter 27 is for each pixel electrode 2
It is arranged and formed so as to correspond to No. 5. Further, the pixel electrode 2 is provided inside the color filter 27.
A common electrode 28 is formed so as to be opposed to No. 5. Further, deflection plates 29 and 30 are formed outside the upper and lower glass substrates 19 and 20, respectively, and a ferroelectric liquid crystal using a chiral smectic C phase is sealed between the upper and lower substrates 31 to form a liquid crystal panel. I am configuring.

The space between the upper and lower substrates 31 of the liquid crystal display panel is not maintained by a normal granular spacer, but as shown in FIG. 5, a spacer is provided between pixels in the horizontal direction of the liquid crystal display panel. 16 are arranged in a striped pattern in the vertical direction, and as a result, the distance between the substrates is kept uniform. Each image display area for one pixel in the horizontal direction divided by the plurality of spacers 16 corresponds to the image display area for right eye 14 and the image display area for left eye 15 shown in FIG. Since this liquid crystal display panel is a color liquid crystal panel using the color filter 27, three pixels of RGB in the vertical direction constitute one picture element, and an image for the right eye and an image for the left eye are displayed alternately. Then, an image is taken out by a lenticular lens (not shown) and is distributed to the right eye and the left eye of the observer.

Thus, since the stripe-shaped spacers are arranged between the substrates at one-pixel intervals, even if the substrate itself is deformed or an external force is applied to the substrate, the fixed spacers 16 cause the substrate to move. Since the space 31 can be held uniformly, it is not necessary to use a granular spacer that is fluid and possibly unevenly distributed as in the conventional case, and good image quality can be obtained.

FIG. 6 is a sectional view of a liquid crystal cell showing a manufacturing process in the case of forming a stripe-shaped spacer.

As shown in FIG. 6A, the glass substrate 20
First, silica (SiO ₂ ) to be an undercoat film is first coated, and then a transparent conductive film such as ITO (Indium Tin Oxide) is patterned and formed in each pixel shape to form a drive electrode 25 and each electrode 25. An insulating region 34 is provided between them. Although not shown, RGB color filters are formed continuously in the depth direction of the drawing above and below the drive electrodes 25, and insulating regions between the electrodes are formed in the left and right directions of the drawing. They have the same width. This color filter is
It serves as a V light mask. And this drive electrode 2
5 and the alignment film 32 so as to cover the surface of the color filter.
A polyimide resin to be formed is thinly formed, and an alignment treatment is performed by using a rubbing method or the like.

Further, a sealing material and a spacer are simultaneously formed on it. That is, for example, using a screen printing method, UV such as "Photo Nice" manufactured by Toray Industries, Inc.
(Ultraviolet) curable polyimide precursor solution 33 is applied to a thickness of about 5 μm, prebaked, and then a portion such as a liquid crystal injection port where the UV curable resin is not formed is covered with a mask, and then the strength is 5 mW / cm ² . By irradiating the rear surface of the glass substrate 20 with the UV light of about 60 seconds, the drive electrode 2
5, a stripe-shaped spacer 16 is formed in a predetermined insulating region 34 between the drive electrodes 25 by using a color filter formed for each pixel of RGB (not shown) provided on the upper side or the lower side of 5 as a UV light mask. In addition, the sealing material 21 can be simultaneously formed on the outer peripheral edge of the liquid crystal display panel by self-alignment. When the color filter is used as a mask as described above, it is desirable to irradiate UV light with light weaker than the above order for several minutes in order to prevent fading due to UV exposure.

Of course, the stripe-shaped spacer 16
Is not limited to the one in which the color filter is used as a mask as described above, and a UV light mask is formed in accordance with each pixel position where an electrode is formed.
A V-shaped mask can be used to simultaneously form a spacer or a sealant having a predetermined shape at a predetermined position. In this case, stripe-shaped spacers can be formed at intervals of one pixel or two pixels or more.

Next, the film is developed by ultrasonic development at 25 ° C. for 25 minutes, and then rinsed at 25 ° C. for 15 minutes.
Done for a second. Thus, as shown in FIG. 6B, the stripe-shaped spacers 16 are formed in close contact with the drive electrodes 25 on the glass substrate 20 and the alignment film 32 thereon, and in the insulating regions 34 between the electrodes. Then, the sealing material 21 is simultaneously formed on the outer peripheral edge of the liquid crystal display panel.

Next, as shown in FIG. 6C, the other glass substrate 19 is placed on the spacer 16 and the sealing material 21. On the glass substrate 19, an electrode 28 which is arranged to face the drive electrode is already formed in another step, and an alignment film 35 is formed on the electrode 28. Then, the glass substrate 19 and the glass substrate 20 thus formed are positioned and overlapped with each other, and further, post-baking is performed in a state in which a predetermined pressure is applied from the outside of both substrates 19, 20. A liquid crystal cell is configured by bringing the spacers 16 and the sealing material 21 into close contact with the polyimide alignment film and bonding the two glass substrates 19 and 20 together.

The method of manufacturing the liquid crystal panel described with reference to FIG.
4 illustrates an example of a manufacturing process of the embodiment illustrated in FIG. In addition, as shown in FIG. 4, the lenticular lens 1
When the spacer 24 is formed at the boundary between the convex lenses 2 in FIG. 2, a mask pattern for forming the spacer is formed in accordance with the electrode positions formed in a matrix on the liquid crystal display panel 13 instead of the self-alignment method described above. Then
The above UV exposure is performed using this mask to form stripe spacers.

Next, a method of driving the liquid crystal display panel in the case of actually displaying a moving image by using the liquid crystal display panel and the lenticular lens configured as described above and performing stereoscopic viewing will be described.

FIG. 7 is an explanatory diagram of a driving method of the liquid crystal stereoscopic image display device of this embodiment. As shown in FIG. 7, a right eye image display area 14 and a left eye image display area 15 are formed in pairs on the liquid crystal display panel 13 in correspondence with the respective convex lens positions of the lenticular lens 12. Then, for each right-eye image displayed in the right-eye image display area 14 provided on the plurality of convex lenses, the drive circuit R37 divides the right-eye image into stripes for each predetermined area, The liquid crystal display panel 13 is drive-controlled so that is displayed in each of the right-eye image display areas 14. Further, the drive circuit L38 is
Divide the image for the left eye into stripes for each predetermined area,
The liquid crystal display panel 13 is drive-controlled so that this is displayed in each left-eye image display area 15. In this way, the drive circuits 37 and 38 are image-displayed on the image display area 14 for the right eye and the image display area 15 for the left eye of the liquid crystal display panel 13, respectively, and these are displayed by the lenticular lens 12 on the right eye of the observer. Thus, the image for the right eye and the image for the left eye can be refracted so that they can be viewed at the same time, and stereoscopic viewing can be performed. As described above, in the liquid crystal stereoscopic image display device of the present embodiment, when stereoscopic viewing is performed using the liquid crystal display panel 13 and the lenticular lens 12, the liquid crystal display panel 13 corresponds to each convex lens position of the lenticular lens 12. An image display area for the right eye and an image display area for the left eye can be previously formed on the upper side.
Therefore, alignment between the liquid crystal display panel 13 and the lenticular lens 12 becomes unnecessary, and proper stereoscopic vision can always be performed. Further, since the convex lens shape of the lenticular lens 12 is changed so as to correct the deviation of the viewpoint between the central part and the peripheral part of the display screen, stereoscopic viewing is performed with an appropriate image also in the peripheral part of the display screen. be able to.

Further, since the stripe-shaped spacers are formed between the upper and lower substrates of the liquid crystal display panel 13 along the partition between the image display areas or the boundary between the convex lenses, the granular spacers are dispersed. It is possible to prevent uneven distribution due to the movement of the spacer when the liquid crystal is injected, the thickness of the liquid crystal layer is kept uniform, and a good display image can be obtained, and the spacer affects the display image. Can be minimized.

[0054]

According to the first aspect of the present invention, the right eye image display area and the left eye image display area, which are striped in the vertical direction of the liquid crystal display panel, correspond to the respective convex lens areas of the lenticular lens. Since the and are formed in a pair, it is possible to always perform proper stereoscopic viewing, and since the stripe-shaped spacers are provided along the partition between the image display regions between the upper and lower substrates, the display image Influence on the spacer is small and there is no uneven distribution or movement of spacers.
A proper image display can be performed by always maintaining the substrate spacing uniform.

According to the second aspect of the present invention, in the liquid crystal panel of matrix display type, the image display area for the right eye and the image display area for the left eye are alternately arranged in the horizontal direction for each pixel. Since the spacers are provided in the vertical direction between pixels that are adjacent in the horizontal direction, granular spacers that are easy to move are not required, uneven distribution of the spacers is eliminated, and the upper and lower substrates are held at a constant interval. Good image quality is obtained. Further, the stripe-shaped spacer is provided in the partition between the image display area for the right eye and the image display area for the left eye, so that it is possible to reduce the influence on the display image.

According to the third aspect of the invention, the right eye image display area and the left eye image display area, which are striped in the vertical direction of the liquid crystal display panel, are provided corresponding to the respective convex lens areas of the lenticular lens. Stripe spacers are provided at each boundary between adjacent convex lenses of the lenticular lens between the upper and lower substrates of the liquid crystal panel. In addition, the influence on the display image is reduced, and by injecting the liquid crystal along the stripe direction of the spacer at the time of injecting the liquid crystal, uneven distribution or movement of the spacer does not occur, and the substrate interval is kept constant, A proper image can be displayed.

According to the invention described in claim 4, in the liquid crystal panel of the matrix display type, the image display area for the right eye and the image display area for the left eye are alternately arranged in the horizontal direction every one pixel, and the lenti Since a stripe-shaped spacer is provided between every two pixels in the horizontal direction so as to correspond to the boundary between the convex lenses of the Cura lens, the influence on the stereoscopic display image is small and the granular particles are easy to move. Since the spacer is not required, the spacer is not biased, and the upper and lower substrates are held at a constant interval, so that proper image display can be performed.

According to the fifth aspect of the invention, since the insulating region wider than the normal pixel interval is provided between the pixels in which the spacers are provided, the spacer can be easily provided in the insulating region between the predetermined pixel electrodes. In addition, it is possible to form the film reliably, and it is possible to further reduce the influence of the spacer on the display image.

According to the sixth aspect of the present invention, the convex lenses of the lenticular lens provided on the front surface of the liquid crystal panel are arranged so that the light rays of the convex lenses are different depending on the difference in viewpoint between the central portion and the peripheral portion of the display screen. Since the convex lens is deformed so that the axial position is closer to the center position of the liquid crystal panel as it goes to the peripheral part, the viewpoint shift that occurs between the central part and the peripheral part of the display screen is corrected, and a proper stereoscopic image is displayed on the entire screen. Can be displayed.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a liquid crystal stereoscopic image display device according to an embodiment.

FIG. 2 is an explanatory diagram of the principle when stereoscopic viewing is performed using a lenticular lens.

FIG. 3 is a diagram showing an arrangement configuration example of spacers provided between upper and lower substrates of the liquid crystal stereoscopic image display device according to the present embodiment.

FIG. 4 is a diagram showing an arrangement configuration example of spacers provided between upper and lower substrates of a liquid crystal stereoscopic image display device according to another embodiment.

5 is a diagram illustrating a configuration example of a liquid crystal display panel of the liquid crystal stereoscopic image display device of FIG.

FIG. 6 is a cross-sectional view of a liquid crystal cell showing a manufacturing process when a stripe-shaped spacer is formed.

FIG. 7 is an explanatory diagram of a driving method of the liquid crystal stereoscopic image display device of the present embodiment.

FIG. 8 is a diagram illustrating a problem of a liquid crystal stereoscopic image display device using a conventional lenticular lens.

[Explanation of symbols]

 11 Liquid Crystal Stereo Image Display Device 12 Lenticular Lens 12a Convex Lens 13 Liquid Crystal Display Panel 14 Right Eye Image Display Area 15 Left Eye Image Display Area 16 Spacer 17 Right Eye Image 18 Left Eye Image

Claims (6)

[Claims] 1. A liquid crystal stereo that displays a stereoscopic image by using a liquid crystal display panel in which transparent electrodes are arranged to face each other inside two substrates and a voltage is applied to liquid crystal sealed between the substrates to display an image. An image display device, wherein a lenticular lens having a plurality of semi-cylindrical convex lenses continuous in the lateral direction is arranged on the front surface of the display unit of the liquid crystal display panel, corresponding to each convex lens region of the lenticular lens,
A striped right-eye image display area and a left-eye image display area are formed in a pair in the vertical direction of the liquid crystal display panel, and a right-eye image display area and a left-eye image are provided between the upper and lower substrates of the liquid crystal panel. A liquid crystal stereoscopic image display device, characterized in that a stripe-shaped spacer is provided for each of the partition parts that partition the display area. 2. The liquid crystal display panel is of a matrix display type, wherein the right-eye image display area and the left-eye image display area are arranged alternately in the horizontal direction for each pixel, 2. The liquid crystal stereoscopic image display device according to claim 1, wherein the spacer is provided in the vertical direction between adjacent pixels. 3. A liquid crystal stereo that displays a stereoscopic image using a liquid crystal display panel in which transparent electrodes are arranged inside two substrates so as to face each other and a voltage is applied to liquid crystal sealed between the substrates to display an image. An image display device, wherein a lenticular lens having a plurality of semi-cylindrical convex lenses continuous in the lateral direction is arranged on the front surface of the display unit of the liquid crystal display panel, corresponding to each convex lens region of the lenticular lens,
A striped right eye image display area and a left eye image display area are formed in a pair in the vertical direction of the liquid crystal display panel, and the convex lenses of the lenticular lens are adjacent to each other between the upper and lower substrates of the liquid crystal display panel. A liquid crystal stereoscopic image display device, characterized in that a stripe-shaped spacer is provided for each boundary portion. 4. The liquid crystal panel is of a matrix display type, and the right eye image display area and the left eye image display area are alternately arranged in the horizontal direction for each pixel, and the lenticular lens of the lenticular lens is provided. 4. The liquid crystal stereoscopic image display device according to claim 3, wherein a stripe-shaped spacer is provided between every two pixels in the horizontal direction so that each convex lens corresponds to a boundary portion adjacent to each other. 5. An insulating region, which is wider than a normal pixel interval, is formed between pixels in which the spacers are arranged so that stripe-shaped spacers can be formed. 2. The liquid crystal stereoscopic image display device according to 2 or 4. 6. The lenticular lens provided on the front surface of the liquid crystal display panel is such that the optical axis positions of the respective convex lenses are increased toward the peripheral portion in accordance with the difference in viewpoint between the central portion and the peripheral portion of the liquid crystal display panel. 6. The liquid crystal stereoscopic image display device according to claim 1, wherein the surface shape of the convex lens is changed so as to be closer to the center position of the liquid crystal display panel.