JP2008281605A - Liquid crystal display panel, stereoscopic image display device and liquid crystal touch panel device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve image display with less displacement of a displayed image even when an observer views the image at an angle with respect to the display screen of a liquid crystal display panel. <P>SOLUTION: The liquid crystal display panel 1 includes a transparent support substrate 3 and a fiber optic plate 5 formed between a pair of polarizing plates 2, 6, and has a pixel liquid crystal part 4, in which pixels of RGB are formed, between the support substrate 3 and the fiber optic plate 5. An image displayed in the pixel liquid crystal part 4 through the fiber optic plate 5 is displayed on the fiber optic plate 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a liquid crystal display panel, a stereoscopic image display device, and a liquid crystal touch panel device, and more specifically, a liquid crystal display panel that enables stereoscopic display using a partial retardation plate, and a stereoscopic image display device including the liquid crystal display panel. And a liquid crystal touch panel device.

  Conventionally, various methods for displaying a three-dimensional image have been proposed. Among them, what is generally used is a so-called “binocular type” that uses binocular parallax. That is, in the “two-lens type”, a left-eye image and a right-eye image having binocular parallax (hereinafter referred to as “left-eye image” and “right-eye image”, respectively) are prepared, and left and right Stereoscopic viewing can be performed by projecting onto the eyes. In the following description, 3D is used as a term meaning 3D or 3D, and 2D is used as a term meaning 2D. Stereoscopic image data is called 3D image data, and normal 2D image data is called 2D image data.

  Here, there is a polarized glasses method as one of the representative methods of the binocular system, and the stereoscopic glasses display of the polarized glasses method that gives a stereoscopic effect by separating the images entering the left eye and the left eye using the polarized glasses. An apparatus is disclosed in Patent Document 1 below.

FIG. 9 is a block diagram showing a configuration of a stereoscopic image display apparatus using a polarized glasses method.
The stereoscopic image display device 100 has a structure including a liquid crystal panel unit 101 and a partial retardation plate 102 attached to the liquid crystal panel unit 101. In the liquid crystal panel unit 101, a pair of transparent support bases 104 and 106 is formed between a pair of polarizing plates 103 and 107, and a pixel liquid crystal unit 105 in which RGB pixels are formed is provided therebetween.

On the polarizing plate 107 on the emission side of the liquid crystal panel unit 101, a partial retardation plate (for example, a so-called micropole or micropolarizer can be used) 102. It is pasted.
This partial phase difference plate 102 has a configuration in which phase difference portions 102a which are shaded portions in the drawing and non-phase difference portions 102b are alternately arranged in a horizontal stripe shape. The phase difference portion 102a is formed of a half-wave plate, and this phase difference portion 102a rotates the polarization direction of incident light (linearly polarized light) by 90 degrees.

As shown in FIG. 10, one pixel of the pixel liquid crystal unit 105 is formed of an R component, a G component, and a B component, and the vertical width of the phase difference unit 102 a is n ( n is a width of a line), and the vertical width of the non-phase difference portion 102b is a vertical width of n ′ (n ′ is an integer of 1 or more) of the pixel of the pixel liquid crystal unit 105. Each is formed below. Here, the pixel line is a line in the horizontal direction of the pixel when the partial retardation plates 102 are arranged in a horizontal stripe shape.
In the present embodiment, the vertical widths of the phase difference portion 102 a and the non-phase difference portion 102 b are both equal to or smaller than the vertical width of one line of the pixel of the pixel liquid crystal unit 105.

  In addition, the pixel liquid crystal unit 105 displays the left-eye image and the right-eye image alternately for each line of the pixel, and the odd-numbered line for displaying the left-eye image through the phase difference unit 102a has a non-phase difference. The phase difference unit 102 is installed at a position where an even line for displaying the image for the right eye through the unit 102b is visible to the observer.

  In this embodiment, when the liquid crystal panel unit 101 emits S-polarized image light, the portion of the image light emitted from the liquid crystal panel unit 101 that has passed through the phase difference portion 102a is changed from S-polarized light to P light. The portion that has been converted to polarized light and passed through the non-phase difference portion 102b is emitted as S-polarized light. Of course, even when the liquid crystal panel unit 101 emits P-polarized image light, the same may be considered. Of the image light emitted from the liquid crystal panel unit 101, the portion that has passed through the phase difference unit 102a. Is converted from P-polarized light to S-polarized light, and the portion that has passed through the non-phase difference portion 102b is emitted as P-polarized light.

  In this way, the stereoscopic image display device 100 partially rotates the direction of the linearly polarized light emitted from the liquid crystal panel unit 101 by the partial retardation plate 102, so that the straight lines from the even lines and the odd lines on the display screen. The polarized light is converted into those orthogonal to each other. That is, the linearly polarized light from the liquid crystal panel unit 101 is emitted as it is from the even lines, and is converted into the linearly polarized light orthogonal to the odd lines by the action of the partial retardation plate 102.

  Video light emitted from the stereoscopic image display apparatus 100 is observed by glasses 108 having polarization directions orthogonal to each other. The right eye passes through the left eye glasses 108a that passes only the linearly polarized light from the odd lines, and the left eye 109 passes through the right eye glasses 108b that passes only the linearly polarized light from the even lines. The light of the right-eye image is incident on 110, and the observer can observe a full-color and flicker-free stereoscopic image.

In addition, there is a touch panel using a liquid crystal panel. In this touch panel, the method of detecting the position where the pen or finger touches the screen is a method of detecting the position where the pen or finger touching the screen absorbs the ultrasonic wave. A method of detecting a part touched by a pen or a finger by attaching a special transparent film on the screen and detecting a part touched by the pen or a finger or mounting a display TFT and a light sensor on the liquid crystal panel itself Etc. generally exist.
Japanese Patent No. 3796414

  However, in Patent Document 1, when the observer views the stereoscopic image display device 100 obliquely from above or below without looking from the front, that is, in the vertical direction with respect to the display surface of the stereoscopic image display device 100. When the image is observed at an angle, crosstalk occurs in which one of the images for the other eye is reflected in one eye. Hereinafter, this problem will be described in detail with reference to the drawings.

FIG. 11 is a diagram of the stereoscopic image display device 100 as viewed from the side with respect to the display surface. FIG. 12 illustrates a situation when the observer views the stereoscopic image display device 100 of FIG. 11 from the front.
In FIG. 12, light from a backlight (not shown) behind the stereoscopic image display device 100 is incident on the stereoscopic image display device 100, and the incident light from this backlight passes through the polarizing plate 103 and the transparent support base 104. The light enters the pixel liquid crystal unit 105.

  In the pixel liquid crystal unit 105, if the hatched portion in the figure is an odd line 105 a of the pixel liquid crystal unit 105 and the non-hatched portion in the drawing is an even line 105 b of the pixel liquid crystal unit 105, the light incident on the pixel liquid crystal unit 105 Among them, the light that has passed through the odd-numbered lines 105a is emitted from the stereoscopic image display device 100 as the image light for the left eye through the transparent support base 106, the polarizing plate 107, and the phase-difference portion 102a. Light is emitted from the stereoscopic image display apparatus 100 as video light for the right eye through the transparent support base 106, the polarizing plate 107, and the phase difference portion 102b.

  Of the light emitted from the stereoscopic image display device 100, the image light for the left eye displayed on the odd lines of the pixel liquid crystal unit 105 passing through the phase difference unit 102a passes through the left eyeglass unit 108a to the left eye 109 of the observer. Incident. Similarly, although not shown in the drawing, among the light emitted from the stereoscopic image display device 100, the right eye image light displayed on the even lines of the pixel liquid crystal unit 105 passing through the non-phase difference unit 102b is the right eyeglass unit 108b. And enters the right eye 110 of the observer.

  In this way, when the observer views the stereoscopic image display device 100 from the front, only the image light for the left eye displayed on the odd lines of the pixel liquid crystal unit 105 passes through the phase difference unit 102a, and the pixel liquid crystal unit. Only the image light for the right eye displayed on the even-numbered lines 105 passes through the non-phase difference portion 102b, whereby the images are separated from the left and right eyes, and a stereoscopic image can be observed.

  However, when the observer observes the stereoscopic image display device 100 at an angle in the vertical direction, light emitted from the stereoscopic image display device 100 to the phase difference portion 102a and the non-phase difference portion 102b of the partial retardation plate 102. However, since the light of the portion exceeding the boundary between the odd-numbered line and the even-numbered line of the pixel liquid crystal unit 105 becomes a part of the image to be displayed on each of the left and right eyes, a part of the image opposite to the observer's eyes As a result, a phenomenon in which the image looks double, that is, crosstalk occurs.

FIG. 13 is a diagram illustrating a state in which the observer looks at the stereoscopic image display device 100 obliquely from below. In FIG. 13, when the light incident on the left eye 109 of the observer through the left eyeglass portion 108 a is traced from the direction of the left eye 109 of the observer as opposed to the case described with reference to FIG. 12, the left eye 109 can see. The light passing through the phase difference portion 102a that exceeds the boundary between the odd-numbered lines 105a and the even-numbered lines 105b of the pixel liquid crystal portion 105 becomes light generated from the region including both lines, and the image looks double. There is a problem that crosstalk occurs.
Here, the light passing through the phase difference portion 102b that can be seen by the right eye 110 also becomes light generated from a region including both lines, and crosstalk occurs in which the image looks double. .

  In the above description, the left-eye and right-eye images are displayed and observed for each horizontal line. However, the same problem occurs when the stereoscopic image display device 100 is observed by being rotated, for example, 90 degrees. In this case, the same crosstalk occurs when the observer moves from side to side and observes.

The above crosstalk occurs due to the observation angle with respect to the stereoscopic image display device 100 and the thickness of the transparent support base 106 and the polarizing plate 107 sandwiched between the partial retardation plate 102 and the pixel liquid crystal unit 105. As a result of this crosstalk, there is a problem that the viewing angle becomes narrow.
Furthermore, the same problem occurs not only in the polarizing glasses method using the partial retardation plate but also in the oblique barrier method using the liquid crystal panel, the oblique lenticular method, and the like. Since these are stereoscopic display devices of a type in which a barrier or lenticular is attached to the liquid crystal panel, the same problem occurs depending on the thickness of the transparent support base and the polarizing plate in the liquid crystal panel.

Furthermore, in a touch panel using a liquid crystal panel, depending on the thickness of the transparent support substrate and the polarizing plate in the liquid crystal panel, depending on the observation angle, the position detected by the surface touched by the observer with a pen or finger and the pixel liquid crystal There is a problem that a slight shift occurs in the position of the image displayed on the screen.
In general, the transparent support substrate is overwhelmingly thicker than the transparent support substrate and the polarizing plate.

  An object of the present invention is to provide a technique for alleviating a problem caused by the thickness of a transparent support substrate included in a liquid crystal panel and widening the viewing angle in a stereoscopic image display device using the liquid crystal panel. .

  According to one aspect of the present invention, in a panel for displaying an image using liquid crystal, the liquid crystal layer and at least one of a pair of transparent support bases sandwiching the liquid crystal layer is provided with a base composed of a fiber optical plate. A liquid crystal display panel is provided.

  According to another aspect of the present invention, the image includes the liquid crystal display panel and a partial retardation plate disposed in front of the liquid crystal display panel, and the partial retardation plate corresponds to the parallax displayed on the liquid crystal display panel. There is provided a stereoscopic image display device characterized in that the polarization direction is controlled by dividing information.

  According to another aspect of the present invention, there is provided a liquid crystal touch panel device comprising the liquid crystal display panel and a detection device that detects a touch position on the liquid crystal display panel.

According to the liquid crystal display panel of the present invention, by using a fiber optic plate instead of the transparent support base on the emission side, crosstalk can be reduced and a bright image can be displayed.
Further, according to the stereoscopic image display device of the present invention, a stereoscopic image with a wide viewing angle can be presented to the observer by using the liquid crystal display panel.
In addition, according to the liquid crystal touch panel device of the present invention, by using the above liquid crystal display panel, it is possible to reduce a positional shift between a touched position and a display image on the panel, which is caused by a difference in observation angle.

Hereinafter, a liquid crystal display panel according to an embodiment of the present invention will be described with reference to the drawings with reference to the drawings. In the following description, the configurations denoted by the same reference numerals in different drawings are the same and will not be described.
FIG. 1 is a diagram for explaining a configuration example of a liquid crystal display panel according to an embodiment of the present invention. As shown in FIG. 1, in the liquid crystal display panel 1 according to the present embodiment, a transparent support base 3 and a fiber optic plate 5 are formed between a pair of polarizing plates 2 and 6, and an RGB pixel is formed therebetween. A pixel liquid crystal unit 4 is provided. In the liquid crystal display panel 1, the pair of polarizing plates 2 and 6, the transparent support base 3, the pixel liquid crystal unit 4, and the fiber optic plate 5 are laminated and integrated in the order shown in the drawing.

Here, the fiber optic plate 5 will be described with reference to the drawings. FIG. 2 is a diagram illustrating an example of the fiber optic plate 5. The fiber optic plate 5 is an optical device in which optical fibers of several microns are bundled as shown in FIG. 2A, and can transmit light without diverging.
FIG. 2B is an enlarged view of a part of the fiber optic plate 5 used in the liquid crystal display panel 1 of the present invention. In FIG. 2B, the fiber optic plate 5 includes, for example, a core glass 7 that constitutes a core portion and transmits light, and a clad glass 8 that covers the periphery thereof.

A multi-fiber structure in which a large number of columnar single glass fibers having an outer diameter of several μm composed of the core glass 7 and the clad glass 8 are bundled in a desired direction of about 1 to 20 mm perpendicular to the axis of each fiber. Fig. 2 (A) shows a plate shape cut into lengths, which are further cut in parallel with the axis of each single fiber and processed into a plate of a desired shape such as a rectangular parallelepiped shape, a cube shape, or a disk shape. The fiber optic plate 5 as shown in FIG.
At this time, when processing into a plate, the area of one surface of the plate is made smaller than the area of the other surface to form a taper so that the image can be enlarged and reduced between both end faces of the fiber optic plate 5. May be.
Moreover, although the hexagonal shape has been described as the shape of the core glass 7 constituting the fiber optic plate 5, the shape is not limited to this shape, and any shape may be used.

3 and 4 are diagrams showing an example of the configuration of the fiber optic plate 5, respectively.
FIG. 3A is an enlarged view of the pixel liquid crystal unit 4, and one pixel is formed of an R component, a G component, and a B component. FIG. 3B is an enlarged view of the fiber optic plate 5, and the size and the size of the core glass 9 are the same as the one pixel in FIG. 3B or the same shape. It is also possible to make only the size of one pixel or less and the remaining part of the clad glass 10.

  FIG. 4 is an enlarged view of the fiber optic plate 5. The core glass 11 has a hexagonal shape, for example, and at least one core glass 11 is within the region of one pixel in FIG. The remaining portion may be formed of the clad glass 12 so as to fit properly.

In FIG. 1, light from a backlight (not shown) installed on the back surface of the liquid crystal display panel 1 is incident on the liquid crystal display panel 1, and the light incident from the backlight further passes through the polarizing plate 2 and the transparent support base 3 to form a pixel. Incident on the liquid crystal unit 4. The light incident on the pixel liquid crystal unit 4 is emitted from the liquid crystal display panel 1 as image light through the fiber optic plate 5 and the polarizing plate 6. The observer observes the image light emitted from the liquid crystal display panel 1.
At this time, the image light emitted from the end face on the polarizing plate 6 side of the fiber optic plate 5 becomes the same image light as that incident from the end face on the pixel liquid crystal unit 4 side of the fiber optic plate 5.

Next, an example of a stereoscopic display device using the liquid crystal display panel 1 of the present invention will be described in detail with reference to the drawings. FIG. 5 is a diagram showing an example of a stereoscopic display device using the liquid crystal display panel 1 of the present invention.
The stereoscopic image display device 14 has a structure including a liquid crystal display panel 1 and a partial retardation plate 13 attached to the liquid crystal display panel 1. On the polarizing plate 6 on the emission side of the liquid crystal display panel 1, a partial retardation plate (for example, a so-called micropole (μ-Pol) or micropolarizer can be used) 13 is used. It is pasted.

  The partial phase difference plate 13 has a configuration in which phase difference portions 13a which are shaded portions in the drawing and non-phase difference portions 13b are alternately arranged in a vertical stripe shape. The phase difference portion 13a is formed of a half-wave plate, and the phase difference portion 13a rotates the polarization direction of incident light by 90 degrees.

  As shown in FIG. 1, one pixel of the pixel liquid crystal unit 4 is formed of an R component, a G component, and a B component, and the vertical width of the phase difference unit 13 a is n ( n is a width of a line), and the vertical width of the non-phase difference portion 13b is the vertical width of a line n ′ (n ′ is an integer of 1 or more) of the pixel of the pixel liquid crystal unit 4. Each is formed below. In the present embodiment, the vertical widths of the phase difference portion 13 a and the non-phase difference portion 13 b are both equal to or smaller than the vertical width of one line of the pixels of the pixel liquid crystal portion 4.

  Further, the pixel liquid crystal unit 4 alternately displays the left-eye image and the right-eye image for each line of the pixel, and the odd-numbered line for displaying the left-eye image through the phase difference unit 13a has a non-phase difference. The phase difference unit 13 is installed at a position where even lines for displaying the right-eye image through the unit 13b are visible to the viewer.

  In the present embodiment, when the liquid crystal display panel 1 emits S-polarized image light, the portion of the image light emitted from the liquid crystal display panel 1 that has passed through the phase difference portion 13a is changed from S-polarized light to P light. The portion that has been converted into polarized light and passed through the non-phase difference portion 13b is emitted as S-polarized light. Of course, even when the liquid crystal display panel 1 emits P-polarized image light, it may be considered in the same manner. Of the image light emitted from the liquid crystal display panel 1, a portion that has passed through the phase difference portion 13a. Is converted from P-polarized light to S-polarized light, and the portion that has passed through the non-phase difference portion 13b is emitted as P-polarized light.

  In this way, the stereoscopic image display device 14 partially rotates the direction of the linearly polarized light emitted from the liquid crystal display panel 1 by the partial retardation plate 13, thereby straight lines from the even lines and the odd lines on the display screen. The polarized light is converted into those orthogonal to each other. That is, the linearly polarized light from the liquid crystal display panel 1 is emitted as it is from the even lines, and is converted into the linearly polarized light orthogonal to the odd lines by the action of the partial retardation plate 13.

  Video light emitted from the stereoscopic image display device 14 is observed with glasses 15 having polarization directions orthogonal to each other. Through the left eyeglass unit 15a that passes only the linearly polarized light from the odd lines, the left eye image light enters the left eye 16, and through the right eyeglass unit 15b that passes only the linearly polarized light from the even lines. The light of the right eye image is incident on the right eye 17 so that the observer can observe a full-color and flicker-free stereoscopic image.

Next, the operation when the observer views the stereoscopic image display device 14 of this embodiment from the front will be described. In the following description, the case where the stereoscopic image display device 14 is observed with the left eye 16 will be described. However, the right eye 17 operates in the same manner, and thus the description thereof is omitted.
6 is a diagram of the stereoscopic image display device 14 as viewed from the side with respect to the display surface. FIG. 7 shows a state when the observer views the stereoscopic image display device 14 of FIG. 6 from the front.
In FIG. 7, light from a backlight (not shown) behind the stereoscopic image display device 14 enters the stereoscopic image display device 14, and the incident light from the backlight passes through the polarizing plate 2 and the transparent support base 3. The light enters the pixel liquid crystal unit 4.

  In the pixel liquid crystal unit 4, if the hatched portion in the figure is the odd line 4 a of the pixel liquid crystal unit 4 and the non-shaded portion in the drawing is the even line 4 b of the pixel liquid crystal unit 4, the light incident on the pixel liquid crystal unit 4 Among them, the light passing through the odd line 4 a and the light passing through the even line 4 b are respectively incident on the lower end of the fiber optic plate 5 and emitted at the positions of the upper ends 5 a and 5 b of the fiber optic plate 5. In other words, the image displayed on the pixel liquid crystal unit 4 is displayed in parallel on the upper end of the fiber optic plate 5 as it is.

  The light emitted from the upper end 5a of the fiber optic plate 5 is the same as the image light for the left eye displayed on the odd-numbered line 4a of the pixel liquid crystal unit 4, and this image light includes the polarizing plate 6 and the phase difference unit 13a. The left-eye image light is emitted from the stereoscopic image display device 14 as the left-eye image light, and the light emitted from the upper end 5b of the fiber optic plate 5 is displayed on the even-numbered line 4b of the pixel liquid crystal unit 4. This image light is emitted from the stereoscopic image display device 14 as right-eye image light through the polarizing plate 6 and the phase difference portion 13b.

  Of the light emitted from the stereoscopic image display device 14, the left-eye image light displayed on the odd-numbered lines of the pixel liquid crystal unit 4 passing through the phase difference unit 13a passes through the left-eye glasses unit 15a. 16 is incident. Similarly, although not shown in the drawing, among the light emitted from the stereoscopic image display device 14, the right-eye video light displayed on the even lines of the pixel liquid crystal unit 4 passing through the non-phase difference unit 13b is converted into the right-eye glasses unit 15b. Through the left eye 17 of the observer.

  In this way, when the observer views the stereoscopic image display device 14 from the front, only the image light for the left eye displayed on the odd lines of the pixel liquid crystal unit 4 passes through the phase difference unit 13a and passes through the pixel liquid crystal unit. Only the image light for the right eye displayed on the even number line 4 passes through the non-phase difference portion 13b, whereby the images are separated from the left and right eyes, and a stereoscopic image can be observed.

Next, a case where the observer observes the stereoscopic image display device 14 at an angle in the vertical direction will be described. FIG. 8 is a diagram illustrating a state in which the observer looks at the stereoscopic image display device 14 obliquely from below.
In FIG. 8, when the light incident on the left eye 16 of the observer through the left eyeglass part 15 a is traced from the direction of the left eye 16 of the observer, contrary to the case described in FIG. 7, the left eye 16 sees. Most of the light that passes through the phase difference portion 13a that can be transmitted becomes light that passes through the upper end 5a of the fiber optic plate 5, and the proportion of light that passes through the upper end 5b decreases. As a result, the crosstalk in which the image looks double is reduced.

Here, the position of the left eye 16 is point A, the point at which the left eye 16 is gazing at the point B, the line of sight when the left eye 16 sees the point B is the line of sight C, and the point A is perpendicular to the partial phase difference plate 13. Z, the distance from the point A to the point B in the direction parallel to the partial retardation plate 13, that is, the partial retardation plate passing through the point B in the direction parallel to the partial retardation plate 13. The distance between the normal line 13 and the point A is y, the back surface of the partial retardation film 13 and the position where the image light is emitted toward the partial retardation film 13, that is, the distance to the upper end of the fiber optic plate 5. If the thickness of the equal polarizing plate 6 is d and the angle between the polarizing plate 6 and the line of sight C is θ, θ is
θ = tan −1 (z / y) (1)
It is represented by

Here, when the left eye 16 gazes at the point B, if the line of sight C does not pass through the shaded portion at the upper end of the fiber optic plate 5, crosstalk occurs. On the fiber optic plate 5, the deviation x that protrudes into the non-hatched part is
x = d / tan θ (2)
It is represented by

  Here, in the case of the conventional liquid crystal panel as shown in FIG. 11 using the transparent support base without using the fiber optic plate 5, the distance d is equal to the thickness of the transparent support base and the polarizing plate. From equation (2), the deviation x increases in proportion to the distance d.

  As described above, in the liquid crystal panel 1 of the present invention, the crosstalk can be reduced by using the fiber optic plate 5 instead of the transparent support substrate on the emission side.

  Here, the crosstalk can be further reduced by inserting a mask between the phase difference portion 13a and the non-phase difference portion 13b. In this case, although depending on the ratio of the area occupied by the mask, the brightness of the displayed image becomes dark. However, in the liquid crystal panel 1 of the present invention, since the ratio of crosstalk can be reduced in advance by using the fiber optic plate 5, the ratio of this mask is reduced to display a very bright image in three dimensions. be able to.

  Furthermore, in the stereoscopic image display device 14 of the present invention, the position where the light incident on the partial retardation plate 13 is emitted and the partial retardation plate 13 can be brought close to each other by using the fiber optic plate 5. Even when an observer observes the apparatus 14 at an angle, crosstalk can be reduced and the viewing angle can be increased.

  In addition, a 4/1 wavelength plate is installed in front of the partial phase difference plate 13 to change the left and right image light into two different types of circularly polarized light (right-handed rotation and left-handed rotation), and the glasses 15 also have only two different kinds of circularly polarized light. A stereoscopic image may be presented by making it transparent.

  In this embodiment, the stereoscopic image display device in which the liquid crystal display panel of the present invention and the partial retardation plate are combined has been described. However, a barrier or a lenticular lens may be used instead of the partial retardation plate. When the liquid crystal display panel is provided with a barrier or lenticular lens, the position of the barrier or lenticular lens must be aligned with the position of the pixel corresponding to the liquid crystal display panel, and the fiber optic plate 5 is used instead of the transparent support substrate on the emission side. Similarly, crosstalk can be reduced. In this case, since the observation is performed with the naked eye, glasses are not necessary.

  Furthermore, when the liquid crystal panel of the present invention is used for a touch panel, a transparent support base and a polarizing plate exist on the side of the liquid crystal panel that emits image light, but the liquid crystal panel of the present invention emits light. By using the fiber optic plate 5 instead of the transparent support substrate on the side, the distance between the position on the touch panel screen and the position where the image light is actually emitted can be shortened. Accordingly, it is possible to reduce the deviation generated between the position detected by the surface touched by the observer with the pen or the finger and the position of the image displayed on the pixel liquid crystal unit.

  Here, in order to detect the position where the pen or finger touched from the outside on the screen of the touch panel, the ultrasonic wave is made to flow on the screen, and the position where the pen or finger touching the screen absorbed the ultrasonic wave is detected. Or a special transparent film on the screen to detect the part touched by the pen or finger, or the liquid crystal panel itself is equipped with a display TFT and a light sensor to detect the part touched by the pen or finger. Any method of detection may be used.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and can be obtained by appropriately combining technical means disclosed in different embodiments. Embodiments are also included in the technical scope of the present invention.

It is a block diagram which shows the structure of one Embodiment of the liquid crystal display panel by this invention. It is a figure which shows the fiber optic plate applicable to the liquid crystal display panel by this invention. It is a figure which shows an example of a structure of the fiber optic plate of the liquid crystal display panel by this invention. It is a figure which shows the other example of a structure of the fiber optic plate of the liquid crystal display panel by this invention. It is a figure which shows one Embodiment of the three-dimensional display apparatus using the liquid crystal display panel by this invention. It is the figure which looked at one Embodiment of the three-dimensional image display apparatus by this invention from the side with respect to the display surface. It is the figure which showed the mode when an observer saw one Embodiment of the stereo image display apparatus by this invention from the front. It is the figure which showed the mode when the observer looked up diagonally from the downward direction of one Embodiment of the three-dimensional image display apparatus by this invention. It is a block diagram which shows the structure of the stereo image display apparatus by the conventional polarized glasses system. It is a figure which shows the structure of the pixel liquid crystal part of the conventional stereoscopic image display apparatus. It is the figure which looked at the conventional stereoscopic image display apparatus from the side with respect to the display surface. It is the figure which showed the mode at the time of the observer seeing the conventional stereoscopic image display apparatus from the front. It is the figure which showed the mode at the time of an observer looking up at the conventional stereoscopic image display apparatus diagonally from the downward direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display panel, 2, 6, 103, 107 ... Polarizing plate, 3,104, 106 ... Transparent support base | substrate, 4,105 ... Pixel liquid crystal part, 5 ... Fiber optic plate, 7, 9, 11 ... Core glass 8, 10, 12 ... clad glass, 13, 102 ... partial retardation plate, 14, 100 ... stereoscopic image display device, 15, 108 ... glasses, 16, 109 ... left eye, 17, 110 ... right eye, 101 ... liquid crystal panel Department.

Claims (3)

  A panel for displaying an image using liquid crystal, comprising: a liquid crystal layer; and at least one of a pair of transparent support bases sandwiching the liquid crystal layer, a base made of a fiber optical plate. .   A liquid crystal display panel according to claim 1 and a partial phase difference plate disposed on a front surface of the liquid crystal display panel, wherein the partial phase difference plate divides image information corresponding to the parallax displayed on the liquid crystal display panel. A stereoscopic image display device characterized by controlling the polarization direction.   A liquid crystal touch panel device comprising: the liquid crystal display panel according to claim 1; and a detection device that detects a touch position on the liquid crystal display panel.

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