JP2001318341A - Stereoscopic display pixel, panel for displaying stereoscopic image and stereoscopic image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stereoscopic image display panel which enables a viewer to view stereoscopic images without mounting any tools at all and may be inexpensively manufactured and a stereoscopic image display device consisting of this stereoscopic image display panel. SOLUTION: This stereoscopic image display panel in one embodiment is constituted by forming an image projecting means 2 which is formed with multiple pixels 21 in prescribed array on one surface of a transparent substrate 4 of a prescribed thickness and a shutter means 3 which is disposed with a pair of shutter elements 31 opening and closing to the right and left so as to face the respective pixels 21 of the image projecting means 2 on the other surface thereof. An excellent effect may be obtained if the pixels 21 are organic electroluminescence elements and if the shutter elements 31 comprise liquid crystal elements.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional image element capable of displaying an image three-dimensionally, and a three-dimensional image display device comprising the three-dimensional image element, particularly an organic EL suitable for use in a three-dimensional image display device having a small display area. TECHNICAL FIELD The present invention relates to a three-dimensional image display panel including an element and a liquid crystal element, and a three-dimensional image display device including the three-dimensional image display panel.

[0002]

2. Description of the Related Art Conventionally, a stereoscopic image is obtained by transmitting and displaying different screens corresponding to binocular parallax to obtain a stereoscopic effect. Usually, photographing is performed using two cameras. For example, two cameras arranged on the left and right use right and left polarizing filters with different polarization planes to shoot left and right images, and alternately transmit video signals representing such left and right images to a cathode ray tube or the like. There is a stereoscopic image display method in which a viewer wearing polarized glasses having different left and right polarization planes can view a stereoscopic image by viewing the projected image.

[0003]

As described above, this stereoscopic image display method requires the use of a polarizing plate on the image sending side, and even if it is good, the viewer must wear polarized glasses. Instead, the polarized glasses must be kept at hand, which is annoying to the viewer.

[0004] The present invention is intended to solve such a problem, and a viewer can view a stereoscopic image without wearing any tools, and a stereoscopic image display panel which can be manufactured at low cost and a stereoscopic image display panel therefor. It is an object to obtain a stereoscopic image display device including a stereoscopic image display panel.

[0005]

Therefore, according to the first aspect of the present invention, a three-dimensional display pixel is disposed opposite to one pixel at a predetermined interval on the surface of the pixel. There is provided a pair of shutter elements that open and close in the left and right directions, thereby solving the above problem.

According to a second aspect of the present invention, the pixel of the three-dimensional image element according to the first aspect is formed of an organic electroluminescent element, and the shutter element is formed of a liquid crystal element.

According to a third aspect of the present invention, a three-dimensional image display panel is formed by forming a transparent substrate having a predetermined thickness and a plurality of pixels formed on one surface of the transparent substrate in a predetermined arrangement. Means, and a shutter means provided on the other surface of the transparent substrate with a pair of shutter elements which are opposed to each pixel of the pixel projecting means and open and close left and right, respectively. Solved.

According to a fourth aspect of the present invention, in the three-dimensional image display panel according to the third aspect, the pixel is an organic electroluminescent element, and the shutter element is a liquid crystal element.

According to a fifth aspect of the present invention, there is provided a stereoscopic image display device comprising: an image projecting unit in which a plurality of pixels are arranged in a predetermined format; and a predetermined interval between the surface of each pixel of the pixel forming unit. A shutter means in which a pair of shutter elements which are opened and opposed to each other and open / close left and right are respectively arranged; switching control means for switching the left / right opening / closing of each shutter element at a predetermined cycle; and the shutter by the switching control means The present invention solves the above-mentioned problem by comprising: left and right images taken by the left and right cameras projected on the image projection means in synchronization with the left / right switching of the means; ing. According to a sixth aspect of the present invention, in the stereoscopic image display device according to the fifth aspect, the pixel is an organic electroluminescence element.

According to a seventh aspect of the present invention, in the stereoscopic image display device according to the fifth aspect, the shutter element is a liquid crystal element.

According to an eighth aspect of the present invention, in the stereoscopic image display device according to the fifth aspect, the switching control means is constituted by a central processing unit, and the image sending means is constituted by a memory means. The central processing unit sends an image from the memory means to the image projecting means.

According to a ninth aspect of the present invention, the three-dimensional image display device according to the fifth aspect includes a timer means, and the switching control means switches the shutter means at a predetermined cycle of the timer means, and the switching means switches the shutter means. The left and right images are sequentially transmitted to the image projecting means in synchronization with the image display means.

According to the first aspect of the present invention, the left and right light emitting paths are opened by switching a pair of left and right shutter elements, and the other is closed. From one pixel.

The stereoscopic image display device according to the present invention can be operated at a relatively low voltage.
And you can switch electronically.

The three-dimensional image display panel according to the third aspect of the present invention is lightweight and highly flexible.

Further, the three-dimensional image display panel according to the present invention described in claim 4 can be operated at a relatively low voltage in addition to the operation and effect of the invention according to claim 3, and can be electronically switched. Since it can be used, it is suitable for use in a full-color thin-film display.

Furthermore, the three-dimensional image display device of the present invention according to the fifth aspect is lightweight, can be operated at a relatively low voltage, can be electronically switched, and can display a three-dimensional image. .

Further, the three-dimensional image display panel of the present invention according to the sixth aspect has a light weight, a high flexibility and a three-dimensional image at a relatively low voltage in addition to the effects of the fifth aspect. It can be displayed in full color.

Further, the three-dimensional image display panel of the present invention according to the seventh aspect can display a three-dimensional image at a relatively low voltage in addition to the operation and effect of the fifth aspect. .

Further, the three-dimensional image display panel according to the present invention described in claim 8 can process photographed three-dimensional images as digital data in addition to the functions and effects of the fifth invention.

Further, the three-dimensional image display panel of the present invention according to the ninth aspect can process a photographed three-dimensional image as digital data in the same manner as the eighth aspect.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration and operation of a stereoscopic image display apparatus according to an embodiment of the present invention will be described below with reference to the drawings. In the following embodiments, an organic electroluminescent element (hereinafter simply referred to as “organic EL element”) will be described as an example of an image projecting unit, and a liquid crystal element will be described as an example of a shutter unit. FIG. 1 is a conceptual diagram for explaining the principle of the three-dimensional image display device of the present invention, FIG. 2 shows one pixel of the three-dimensional image display device shown in FIG. 1, FIG. B is a top view of FIG. A, FIG. 3 is a cross-sectional view of a stereoscopic image display panel of one embodiment suitable for use in the stereoscopic image display device of the present invention, and FIG. 4 is a stereoscopic image display of one embodiment of the present invention. FIG. 5 is a block circuit diagram of the device, and FIG. 5 is a flowchart of the block circuit shown in FIG.

First, the configuration and structure of a three-dimensional image display device and a three-dimensional image display panel according to an embodiment of the present invention will be described with reference to FIGS.

In FIGS. 1 and 3, reference numeral 1 denotes a three-dimensional image display panel of the present invention. In FIG. 1,
Although the three-dimensional image display panel 1 in which four pixels in the horizontal direction and three pixels in the vertical direction are arranged in a matrix is shown, the three-dimensional image display panel 1 of the present invention is a panel having such a number of pixels. It is previously refused that the present invention is not limited to this.

As shown in FIGS. 1 and 2, the three-dimensional image display panel 1 comprises an image projecting means 2 comprising a plurality of organic EL elements and a shutter means 3 comprising a liquid crystal element. The image projection means 2 has four pixels in the horizontal direction,
The organic EL elements 21 of three pixels are arranged in a matrix in the vertical direction. The shutter means 3 is composed of a plurality of shutter elements 31 and each of the shutter elements 3
Reference numeral 1 denotes a device having a half area in the left-right direction of one organic EL element 21. A pair of shutter elements 31 having the same area face the front surface of each pixel 21 at a predetermined interval,
The light emitting paths are arranged and arranged so as to cover the left and right halves of the organic EL element 21 of each pixel.

In practice, the predetermined distance between the image projecting means 2 and the shutter means 3 can be formed in parallel with a transparent substrate 4 having a predetermined thickness, for example, a glass plate. On one surface of the transparent substrate 4, an image projection unit 2 composed of an organic EL element 21 is formed by, for example, a printing unit.
On another surface of the transparent substrate 4, a shutter means 3 including a liquid crystal element (shutter element) 31 is formed in the above positional relationship. Right and left parallax can be provided by the thickness of the transparent substrate 4. The image projecting means 2 is sealed with a sealing material 5 and protected.

Next, with reference to FIG. 4, the main components of the three-dimensional image display device 10 using the three-dimensional image display panel 1 will be described.

Reference numeral 10 indicates a three-dimensional image display device according to one embodiment of the present invention. The three-dimensional image display device 10 includes a switching control unit 11, an image sending unit 12, and a timer unit 13. The image projecting unit 2 is connected to one output terminal of the image sending unit 12, and the other is connected to the other output terminal. The shutter means 3 is connected and configured.

The switching control means 11 is composed of a CPU (Central Processing Unit). The image sending means 12 receives a time-division switching signal of a predetermined cycle, for example, a cycle of 1/60 second, and is stored in its memory. The left and right image data are switched, and the image data is sequentially transmitted to the image transmission means 12. A switching signal is transmitted to the shutter means 3 in synchronization with the switching, and the opening and closing of the pair of left and right shutter elements 31 is performed. Are switched at the same predetermined cycle as described above, and the image transmitting means 12 alternately outputs left and right image data of the subject photographed by the television cameras disposed on the left and right, for example, 1
The memory device is a memory device that is sequentially input in a time-sharing manner with a period of / 60 seconds, and the timer unit 13 is a unit that generates a timing pulse of a reference time, for example, 1/60 seconds.

Next, using the flowchart of FIG.
The operation of the stereoscopic image display device 10 will be described.

When the power supply (not shown) of the stereoscopic image display device 10 is turned on, the timer means 13 is operated, and the reference time is reached.
For example, a timing pulse of 1/60 second is generated to control the switching control unit 11. The switching control means 11
The image sending means 12 is controlled by a time-division switching signal having a cycle of 0 seconds, and the image sending means 12 sequentially supplies left and right image data to each pixel 21 of the image projecting means 2. At the same time, a switching signal is supplied from the switching control unit 11 to the shutter unit 3 in synchronization with the switching of the left and right image data, and the opening and closing of the left and right shutter elements 31 are switched. When the right image data is supplied to the image projecting means 2, control is performed such that the right shutter element 31 of the shutter means 3 is opened and the left shutter element 31 is closed. After the next 1/60 second, control is performed so that the right shutter element 31 is closed and the left shutter element 31 is opened. This opening and closing operation is switched in synchronization with the transmitted left and right image data. By repeatedly performing this operation, the viewer can view a stereoscopic image.

That is, as shown in FIG. 2B, when the left shutter element 31 is closed to block the light emission path, and the right shutter element 31 is opened and viewed from the right,
Light emission can be seen from the angle of arrow R, but no light emission can be seen at the angle of arrow L (left side). The opposite is also true, and images can be sent in different angles. That is, the liquid crystal element is a shutter element 31, and if the left and right images photographed by the left and right cameras projected on the image projection means 2 behind are switched in accordance with the opening and closing of the shutter element 31, the right shutter element is switched. When 31 is open and the left shutter element 31 is closed, an image of a pattern that can be seen from the right eye can be projected on the pixel 21,
Conversely, when the left shutter element 31 is open and the right shutter element 31 is closed, an image of a pattern that can be seen from the left eye can be projected on the pixel 21. This switching is performed, for example, by 1 / second.
If performed at a high speed of 60 seconds, a stereoscopic image can be displayed.

The shutter element 31 has a size, a shape,
By adjusting the position, the gaze direction can be adjusted,
By adjusting the distance between the organic EL element 21 serving as the image projecting means 2 and the liquid crystal element 31 serving as the shutter means 3, the line of sight can be similarly adjusted. Shutter element 31
Is always opposed to the organic EL element 21, so if the size of the shutter element 31 is changed, the area and shape of the mask portion that does not contribute to the shutter element 31 will be changed.

In this case, if the image projection surface of the three-dimensional image display panel 1 has a small area, the image projection surface is often fixed in the direction perpendicular to the center of the viewer's line of sight. There is no problem. In addition, when the image projection surface has a small area, the angle difference in the line-of-sight direction of each pixel (especially, left and right) in the screen becomes small, so that it is not always necessary to particularly adjust the position of the window of the shutter element in the screen. .

Crosstalk between left and right images (such as light entering the right eye entering the left eye) can be suppressed by reducing the area of the window of the shutter element. The decrease in luminance due to this can be dealt with by increasing the light emission amount.

When the image projection surface of the three-dimensional image display panel 1 has a large area, it is preferable to arrange the shutter elements of the pixels existing in the peripheral portion of the screen from the center. In this case, the pitch between the shutter element and the adjacent element is preferably reduced toward the periphery.

As the image projecting means 2, a light-weight, flexible, full-color thin-film display is possible by operating an organic EL panel at a relatively low voltage and selecting an appropriate organic dye or polymer material. However, a liquid crystal display panel, a plasma display panel, or the like may be used. Examples of the organic EL element include, for example,
125469 “Organic EL light emitting element”, JP-A-10-22
The organic EL device disclosed in 3377 “Light Emitting Diode” and the like can be given.

[0038]

As described above, according to the present invention,
The three-dimensional display pixel, the three-dimensional image display panel, and the three-dimensional image display device can be relatively easily configured. In particular, the three-dimensional image display panel can be easily configured by forming the image projecting unit and the shutter unit on both sides of the transparent substrate. Can be. In particular, when an organic EL element is used for a three-dimensional image display panel and a liquid crystal element is used for a shutter means, the organic EL element can be operated at a relatively low voltage. In addition to flexibility, a number of excellent effects can be obtained, such as a thin-film full-color image projection device.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram for explaining the principle of a stereoscopic image display device according to the present invention.

2 shows one pixel of the stereoscopic image display device shown in FIG. 1, wherein FIG. 2A is a plan view thereof, and FIG. 2B is a top view of FIG.

FIG. 3 is a cross-sectional view of a three-dimensional image display panel according to an embodiment suitable for use in the three-dimensional image display device of the present invention.

FIG. 4 is a block circuit diagram of a stereoscopic image display device according to one embodiment of the present invention.

FIG. 5 is a flowchart of the block circuit shown in FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... The three-dimensional image display panel of one Embodiment of this invention, 2 ... Image projection means, 21 ... Pixel 21, 3 ... Shutter means, 31
... shutter element, 4 ... transparent substrate (glass substrate), 5 ... sealing material, 10 ... stereoscopic image display device of one embodiment of the present invention,
11 switching control means, 12 image sending means, 13 timer means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09G 3/20 660 G09G 3/20 660X 5G435 3/30 3/30 H H04N 13/04 H04N 13/04 F Term (reference) 2H059 AA23 AA24 AA33 2H088 EA05 EA07 EA33 EA40 HA06 MA20 5C061 AA01 AA11 AB12 AB14 AB16 AB17 5C080 AA06 BB06 CC03 CC04 DD27 EE29 EE30 FF09 GG02 GG12 JJ02 CB06A13BA13A01 BB01A01BA13A01 BB

Claims (9)

[Claims] 1. A three-dimensional display pixel comprising: one pixel; and a pair of shutter elements which are disposed on the surface of the pixel so as to face each other at a predetermined interval and open and close left and right. 2. The three-dimensional display pixel according to claim 1, wherein the pixel is an organic electroluminescence element, and the shutter element is formed of a liquid crystal element. 3. A transparent substrate having a predetermined thickness; an image projecting means in which a plurality of pixels are formed in a predetermined arrangement on one surface of the transparent substrate; A three-dimensional image display panel comprising: a pair of shutter elements each of which is provided with a pair of shutter elements that open and close in the left and right directions, facing each pixel of the projection means. 4. The three-dimensional image display panel according to claim 3, wherein the pixel is an organic electroluminescence element, and the shutter element is a liquid crystal element. 5. A pair of shutters which open and close left and right, facing an image projecting means in which a plurality of pixels are arranged in a predetermined format and facing a surface of each pixel of said pixel forming means at a predetermined interval. Shutter means in which are arranged respectively; switching control means for switching the left and right opening and closing of each of the shutter elements at a predetermined cycle; and the image projecting means in synchronization with left and right switching of the shutter means by the switching control means. A stereoscopic image display device comprising: an image transmitting unit that transmits left and right images taken by the left and right cameras and projected to the image projecting unit. 6. The three-dimensional image display device according to claim 5, wherein the pixel is an organic electroluminescence element. 7. The three-dimensional image display device according to claim 5, wherein the shutter element is a liquid crystal element. 8. The switching control means comprises a central processing unit, the image sending means comprises a memory means, and the central processing unit displays an image from the memory means in the image display. 6. The three-dimensional image display device according to claim 5, wherein the three-dimensional image display device sends the data to a means. 9. A timer unit, wherein the switching control unit switches the shutter unit at a predetermined cycle of the timer unit, and sequentially transmits left and right images to the image projecting unit in synchronization with the switching. The stereoscopic image display device according to claim 5, wherein: