JPH052368A - Stereoscopic display device - Google Patents

Abstract

PURPOSE:To obtain the stereoscopic display device which is prevented from decreasing transmission density owing to lamination and can be widened in visual angle. CONSTITUTION:This stereoscopic display device is equipped with a display means 1 constituted by laminating plural light transmission type plasma display panels 1a-(1d) formed on a transparent substrate 6 so that an image on one plasma display panel as a rear surface in an observation direction can be observed through plasma display panels positioned in front, and display control means 2-5 which displays different images by the plasma display panels 1a-(1d).

Description

Detailed Description of the Invention

[0001]

This invention relates to three-dimensional medical images, CG.
The present invention relates to a three-dimensional image display device such as (computer graphics) and CAD, and a three-dimensional display device in a three-dimensional television.

[0002]

2. Description of the Related Art FIG. 3 shows, for example, JP-A-60-209781.
And FIG. 21 is a cross-sectional view showing a conventional stereoscopic display device disclosed in Japanese Patent Publication No. JP-A-2003-264, in which 21 is a multi-layer liquid crystal display for displaying a perspective stereoscopic image, 22 is an image memory section, and 23 is a scanning signal to each liquid crystal panel. A liquid crystal display scanning control unit, 24 is an R / W control unit for supplying an address to the image memory unit 22 and controlling the liquid crystal display scanning control unit 23, and 25 is a start control signal for displaying a stereoscopic image on the multilayer liquid crystal display 21. It is a display indicator that outputs.

Next, the operation will be described. First, a start control signal is output from the display indicator 25 at regular intervals, the R / W control unit 24 is driven in synchronization with this control signal, and the R / W control unit 24 is stored in the image memory unit 22. Address information for each image is supplied to the image memory unit. The image memory unit 22 reads out image data corresponding to the address information sequentially output from the R / W control unit 24 and supplies it to the multi-layer liquid crystal display 21.

On the other hand, the liquid crystal display scan controller 23 synchronizes with the operation of supplying the address information to the image memory 22.
It is controlled by the / W control unit 24 and supplies a scanning signal to the multi-layer liquid crystal display 21. As a result, an image is displayed stereoscopically by the display of the laminated structure of the multi-layer liquid crystal display 21, and a transparent stereoscopic image is displayed by using a transmissive liquid crystal display unit of the active matrix driving system.

[0005]

Since the conventional stereoscopic display device is configured as described above, the image information added to each liquid crystal panel of the multi-layer liquid crystal display 21 is transmitted through the liquid crystal panel closer to the observer. Since it is greatly affected by the ratio, it is difficult to represent a stereoscopic perspective image in which multiple layers are stacked. Moreover, since the liquid crystal has a narrow viewing angle, it is difficult to observe a stereoscopic image at different observation points.

The present invention has been made in order to solve the above-mentioned problems, and there is little interference between laminated images, a stereoscopic image having a wide viewing angle at an observing position without significantly lowering transmission density due to lamination. The purpose is to obtain a display device.

[0007]

A stereoscopic display device according to a first aspect of the present invention comprises a plurality of light-transmissive plasma display panels, each of which is capable of displaying an image independently of each other. The image display is performed so that the display image on the plasma display panel located on the rear side can be observed through the plasma display panel located on the front side with respect to the observation direction. A stereoscopic display device according to the invention of claim 2 is
Only the density values of points located on the surface in the observation direction are displayed, and the density values of other points are displayed as zero.

[0008]

According to the first aspect of the present invention, the light-transmissive display panel emits light by itself, unlike a liquid crystal panel in which a portion corresponding to a pixel of each image changes transmittance. The internal image can be clearly observed, and the viewing angle can be relatively wide depending on the position of the observer. Further, the display image in the invention according to claim 2 displays only the density values of the points located on the surface in the observation direction and displays the density values of the other points as zero, thereby displaying the display image located on the surface in the observation direction. Can be observed without being disturbed by other images.

[0009]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 is a multi-layer plasma display as a display means in which a plurality of plasma display panels 1a to 1d manufactured on a transparent substrate are laminated. Reference numeral 2 is an image memory unit for storing image information of each plasma display panel 1a to 1d constituting the multi-layer plasma display 1, 3 is a plasma display scan control unit for supplying a scanning signal to each plasma display panel 1a to 1d,
Reference numeral 4 is an R / W control unit for supplying an address to the image memory unit 2 and controlling the plasma display scanning control unit 3, and 5 is a display indicator for outputting a start control signal for displaying a stereoscopic image on the multilayer plasma display 1. Yes, these constitute display control means.

FIG. 2 shows the plasma display panel 1 described above.
FIG. 3 is a perspective view showing a configuration of a (to 1 d), in which a transparent dielectric layer (glass) 7 is provided on a transparent substrate 6 with a trigger electrode 8 interposed therebetween, and a cathode 9 of a band-shaped transparent electrode is provided on the transparent dielectric layer 7. Are arranged at predetermined intervals, and the anodes 1 of strip-shaped transparent electrodes are arranged along the transparent partition walls 11 arranged at predetermined intervals so as to be orthogonal to the cathode 9.
0 is provided, and the front glass 12 is laminated on the transparent substrate 6 so as to sandwich them.

Next, the operation will be described. Display indicator 5
Outputs a start control signal at regular intervals, and the R / W control unit 4 is driven in synchronization with this start control signal. The R / W control unit 4 supplies address information for each image stored in the image memory unit 2 to the image memory unit. The image memory unit 2 reads out image data corresponding to the address information sequentially output from the R / W control unit 4 and supplies it to the multilayer plasma display 1.

On the other hand, the plasma display scanning control section 3 synchronizes with the operation of supplying address information to the image memory section 2, and
The scanning signal is supplied to the multilayer plasma display 1 under the control of the / W control unit 4. Each of the plasma display panels 1a to 1d of the multi-layer plasma display 1 is configured as shown in FIG. 2, and a gas such as Ne-Ar enclosed in the space between the facing anode 10 and cathode 9 is discharged by applying a high voltage.

At this time, a trigger electrode 8 is used as an auxiliary discharge electrode for lowering the apparent drive voltage, and a partition wall 11 is used to prevent discharge between adjacent electrodes, all of which are light transmissive type such as glass. Since the above materials are used, the plasma display panel 1b located on the rear surface
A two-dimensional image composed of 1d pixel discharges is
A plasma display panel 1a located in front of the observer can be transmitted and observed, and a stereoscopic image is displayed.

FIG. 3 shows the control by the display control means.
Left and right eyes R and L of the observer in the three-dimensional surface image (information)
It is a figure in the case of displaying only the density value of the image 13 on the front surface side and displaying the image 14 of the exterior and interior of the solid located on the back surface in the other observation direction with zero value. Only the image can be observed without being disturbed by other images.

Example 2. In the above-mentioned embodiment, the multi-layer plasma display constituted by using a plurality of plasma display panels 1a to 1d as the display means is shown, but a flat surface such as a light transmission type electroluminescent display (ELD) or a fluorescent display tube (VFD). The same effect can be obtained by using a plurality of displays.

Embodiment 3. Also, instead of the flat display, a similar stereoscopic effect can be obtained by arranging a plurality of light emitting elements such as a light bulb, an arc tube, and a fluorescent tube.

Embodiment 4. Further, although the three-dimensional image display is described in the above embodiment, it may be applied to an interior decoration and an advertising tower, and a similar effect is obtained.

[0018]

As described above, according to the first aspect of the invention, since the multi-layer plasma display as the display means is constituted by laminating a plurality of light transmissive plasma display panels, the brightness is a multi-layer. There is an effect that a large viewing angle can be obtained without causing a large drop due to superposition. Further, according to the invention described in claim 2, since only the density values of the points located on the surface in the observation direction are displayed and the density values of the other points are displayed as zero, the display image located on the surface in the observation direction is not displayed. There is an effect that can be observed without being disturbed by the image of.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration of a stereoscopic display device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a plasma display panel according to an embodiment of the present invention.

FIG. 3 is a principle diagram of stereoscopic viewing of a surface image by an apparatus according to an embodiment of the present invention.

FIG. 4 is a schematic view of a conventional stereoscopic display device.

[Explanation of symbols]

1 Multilayer plasma display 2 Image memory section 3 Plasma display scanning controller 4 R / W control unit 5 display indicators 6 transparent electrodes 7 Dielectric layer 8 Trigger electrode 9 cathode 10 Anode 11 partitions 12 Front glass

Claims (2)

[Claims] 1. A plurality of light-transmissive plasma display panels formed on a transparent substrate are stacked, and a display image of the plasma display panel located on the rear side of the observation direction is transmitted through the plasma display panel located on the front side for observation. A stereoscopic display device comprising display means configured as described above and display control means for displaying a different image for each plasma display panel. 2. The stereoscopic display device according to claim 1, wherein among the displayed images, only the density values of points located on the surface in the observation direction are displayed and the density values of other points are displayed as zero.