JPH05241098A - Liquid crystal display device - Google Patents

Abstract

PURPOSE:To improve the stereoscopic display effect and display quality of the liquid crystal display device at a practical distance. CONSTITUTION:A 1st liquid crystal display panel 2 where a real image is displayed by patterning an image is arranged slantingly at theta1 to an axis L, and a 2nd liquid crystal display panel 3 where a virtual image is displayed by patterning an image is arranged slantingly at theta2 to the axis L. Then the surface of a half-mirror 1 is arranged below the eyes of an observer and the 2nd liquid crystal display panel 3 is arranged on its lower side. An observer in the left direction observes the image on the 2nd liquid crystal display panel 3 at a point A and the images of the 1st and 2nd liquid crystal display panels 2 and 3 are observed with relatively large visual angles theta1 and theta2, so excellent stereoscopic effect is obtained as compared with images which merely shifted in position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device capable of stereoscopic display.

[0002]

2. Description of the Related Art Referring to FIG. 5, a conventional stereoscopic liquid crystal display device includes a half mirror (10) and first and second liquid crystal display panels (11) arranged at right angles to the half mirror (10). ) (12) and the light sources (13) (1) of the first and second liquid crystal display panels (11) (12).
4) and mirrors (15) and (16).

In the first and second first liquid crystal display panels (11) and (12), a common electrode substrate and a segment electrode substrate, on which a common electrode and a segment electrode are formed of ITO or the like, are formed so that the electrodes face each other. It is arranged at intervals of 10 μm, and liquid crystal is filled in the space between the substrates.
The segment electrodes of the first liquid crystal display panel (11) are patterned with a background of a predetermined image to be displayed, and selectively transmit the light of the light source (12) to display the predetermined image. A predetermined image to be displayed is patterned on the segment electrodes of the second liquid crystal display panel (12), and the light of the light source (14) is selectively transmitted to display the predetermined image. By alternately turning on and off these display panels (11) and (12), stereoscopic display described later becomes possible.

The distance from the second liquid crystal display panel (12) to the half mirror (10) is set to be shorter than the distance from the first liquid crystal display panel (11) to the half mirror (1) by I. The image of the second liquid crystal display panel (12) is observed by the observer at point B in front I of the first liquid crystal display panel (11). In the conventional liquid crystal display device configured as described above, when the observer is approaching the liquid crystal display device, the image of the first liquid crystal display panel (11) at the point B and the second liquid crystal display panel (12) are displayed. ) Image angle of view is slightly different, the first and second liquid crystal display panels (1
1) The images of (12) are stereoscopically recognized.

[0005]

In the above conventional liquid crystal display device, the distance from the first liquid crystal display panel (11) and the second liquid crystal display panel (12) to the half mirror (1) is made different. Therefore, as described above, when the observer approaches the liquid crystal display device, the angle of view of the image entering the left and right eyes is slightly different, and the first and second
The images on the liquid crystal display panels (11) and (12) may be stereoscopically recognized. However, when the above display device is observed at a normal working distance, the stereoscopic display effect is reduced because the angle of view becomes substantially zero.

Further, in the conventional liquid crystal display device, the surface of the half mirror (10) is arranged upward as viewed from the observer side, so that the light source such as indoor illumination is reflected by the half mirror (10). Therefore, it is visible to the observer and the display quality is degraded. The present invention has been made in view of the above-mentioned problems, and an object of the present invention is a liquid crystal display device for stereoscopic display, which enables stereoscopic display at a normal use distance, that is, a practical distance, and has excellent display quality. To provide.

[0007]

[Means for Solving the Problems]
In order to achieve the object, a liquid crystal display device according to the present invention includes a half mirror, a first liquid crystal display panel for displaying a real image arranged substantially at right angles to each other with the half mirror as a center, and a first liquid crystal display panel for displaying a virtual image. A liquid crystal display device for stereoscopic display, which comprises two liquid crystal display panels and has a desired shape, wherein the half mirror surface is arranged so as to incline downward when viewed from the observer side. The second liquid crystal display panel is arranged on the lower side of the surface.

The liquid crystal display device according to the present invention is
A half mirror and a first liquid crystal display panel for displaying a real image and a second liquid crystal display panel for displaying a virtual image, which are arranged at positions substantially orthogonal to each other with the half mirror as a center, are provided, and a stereoscopic display of a desired shape is performed. In the liquid crystal display device for stereoscopic display, the half mirror surface is arranged so as to incline downward when viewed from the viewer side, and the second liquid crystal display panel is arranged below the half mirror surface. With
It is characterized in that the distances from the first and second liquid crystal display panels to the half mirror are different.

[0009]

In the liquid crystal display device configured as described above, since the panel planes of the first and second liquid crystal display panels are arranged at non-perpendicular, the images are incident on the observer with a relatively large angle difference. Therefore, the perspective of two images is clearly recognized even from a distance, and the stereoscopic display effect is improved.

Further, since the half mirror surface is arranged below as viewed from the observer side, the light source in the room is not reflected by the half mirror, so that the display quality can be improved.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in FIGS. The liquid crystal display device of the present invention is shown in FIG.
As described above, the half mirror (1), the first and second liquid crystal display panels (2) and (3) arranged substantially at right angles around the half mirror (1), and the first and second liquid crystal display panels (2) (3) light sources (4) and (5) and mirrors (6) and (7).

First and second liquid crystal display panels (2)
(3) shows a common electrode substrate and a segment electrode substrate on which a common electrode and a segment electrode are formed of ITO or the like,
This is a well-known structure in which the electrodes are arranged so as to face each other at an interval of about 10 μm, and liquid crystal is filled in the substrate gap. By the way, the half mirror (1) is arranged such that its mirror surface is downward as viewed from the observer, and the second mirror that displays a virtual image on the lower side of the half mirror (1) surface.
The liquid crystal display panel (3) is arranged. The first liquid crystal display panel (2) is arranged behind the half mirror (1).

In the first liquid crystal display panel (2), for example, an image to be displayed as shown in FIG. 2 is patterned, and the light of the light source (4) is selectively transmitted to the image of FIG. Character segment) is displayed. This image is seen by the observer as a real image during stereoscopic display. The panel plane of the first liquid crystal display panel (2) is inclined by θ1 with respect to the axis L in the figure. Therefore, the image on the first liquid crystal display panel (2) is transmitted through the half mirror (1) to the left in the drawing along the optical axis L1 and the viewing angle θ1 is observed by the observer's eyes.
Is incident at.

On the other hand, the second liquid crystal display panel (3) is shown in FIG.
The image you want to display as shown in is patterned,
The light of the light source (5) is selectively transmitted to display the image of FIG. The panel plane of the second liquid crystal display panel (3) is inclined by θ2 with respect to the axis L in the figure. Therefore, in the second liquid crystal display panel (3), the image is reflected by the half mirror (1), transmitted to the left side of the drawing by the optical axis L2, and enters the observer's eye at the viewing angle θ2. As a virtual image for stereoscopic display, this image is overlapped with the above-mentioned real image and desired stereoscopic display is performed.

The distance from the second liquid crystal display panel (3) to the half mirror (1) is set to be shorter than the distance from the first liquid crystal display panel (2) to the half mirror (1) by I. Therefore, the observer observes the image (that is, the virtual image) of the second liquid crystal display panel (3) in the vicinity of point A in front I of the first liquid crystal display panel (2). The first and second liquid crystal display panels (2) and (3) can also be used as a display panel of a dot matrix system or the like. Here, the example using the liquid crystal display panel in which the interdigital segment electrodes are formed has been described.

In the liquid crystal display device of the present invention configured as described above, the image (virtual image) of the second liquid crystal display panel (3) and the image (real image) of the first liquid crystal display panel (2) at the point A are the same. Regardless of the front and rear positions, the light is incident on the observer's eyes at θ1-θ2, so that the respective images are recognized separately and the first liquid crystal display panel (2) and the second liquid crystal display panel (3) are recognized. To the half mirror (1) are different from each other, an image (real image) of the first liquid crystal display panel (2) and an image (virtual image) of the second liquid crystal display panel (3).
Is given a strong perspective, and is displayed in a stereoscopic manner as shown in FIG.

Further, since the half mirror (1) surface is arranged so as to be downward as viewed from the observer and the second liquid crystal display panel (3) is arranged on the lower side thereof, stereoscopic display is performed. Even if the fluorescent lamp in the room is not reflected by the half mirror (1), the stereoscopic display quality can be improved. In the above-described embodiment, the embodiment in which both the first liquid crystal display panel (2) and the second liquid crystal display panel (3) are tilted has been described, but in the present invention, one of the liquid crystal display panels is tilted. It goes without saying that the intended purpose can also be achieved by doing so.

[0018]

As described above, in the present invention, since the panel planes of the first and second liquid crystal display panels are arranged at non-perpendicular angles, the observer can compare the positions of those images with each other. Since these images are incident with a large angle of view difference, the perspective of two images is clearly recognized even from a distance, and the stereoscopic display effect is improved.

Further, according to the present invention, the half mirror surface is arranged below when viewed from the observer, and the second liquid crystal display panel is arranged below this half mirror surface, so that the illumination light such as a fluorescent lamp in the room is illuminated. Since the light does not reflect on the half mirror, it is possible to improve the stereoscopic display quality.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

FIG. 2 is a diagram showing a display example of a first liquid crystal display panel.

FIG. 3 is a diagram showing a display example of a second liquid crystal display panel.

FIG. 4 is a diagram showing a stereoscopic display according to the present invention.

FIG. 5 is a schematic view showing a conventional liquid crystal display device.

[Explanation of symbols]

 (1) Half mirror (2) First liquid crystal display panel (3) Second liquid crystal display panel (4) (5) Light source (6) (7) Mirror

Claims (2)

[Claims] 1. A half mirror and a first liquid crystal display panel for displaying a real image and a second liquid crystal display panel for displaying a virtual image, which are arranged at positions substantially orthogonal to each other with the half mirror as a center. A liquid crystal display device for stereoscopic display that performs stereoscopic display of a shape, wherein the half mirror surface is arranged so as to incline downward when viewed from an observer side, and the second liquid crystal is provided below the half mirror surface. A liquid crystal display device having a display panel. 2. A half mirror and a first liquid crystal display panel for displaying a real image and a second liquid crystal display panel for displaying a virtual image, which are arranged at positions substantially orthogonal to each other with the half mirror as a center. A liquid crystal display device for stereoscopic display that performs stereoscopic display of a shape, wherein the half mirror surface is arranged so as to incline downward when viewed from an observer side, and the second mirror is disposed below the half mirror surface.
And a liquid crystal display panel of the first and second
The liquid crystal display device characterized in that the distance from the liquid crystal display panel to the half mirror is different.