JP2007199427A - Stereoscopic display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a stereoscopic display image to be visualized in a plurality of directions. <P>SOLUTION: A plurality of plate shaped EL display panels 2<SB>0</SB>, 2<SB>1</SB>or the like are arranged to be overlapped with each other along a depth direction. Many pixels are arranged in a three-dimensional shape, each display EL panels 2<SB>k</SB>has a transparent insulating board and a transparent light emitting layer formed on the transparent insulating board, and both electrodes for pinching the light emitting layer are transparent, so that an image can be displayed regardless of whether it is a face or a reverse side, as if an object or the like exists at a display position, and for example, a back face of the display object can be visualized from the rear side of the display apparatus. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a stereoscopic display device, for example, a stereoscopic display device using an organic electroluminescence element (hereinafter referred to as an EL (Electro Luminescence) element) as a light emitting element.

Conventionally, as a stereoscopic display device for displaying a stereoscopic image, in addition to a display device using polarized glasses or the like, as a display device without glasses, an autostereoscopic display using a CRT or a liquid crystal display, for example, A display device is used that reflects an image using a lenticular screen on which a semi-cylindrical lens group is arranged, thereby allowing an image to be viewed stereoscopically.
However, the autostereoscopic display uses a method of displaying the parallax of the observer's eyes and shutters the left-eye video and the right-eye video, so there is concern about physiological eye fatigue. Has been.
In addition, for example, in a display device using a lenticular screen, the device itself is large, and the displayed image cannot be recognized as a three-dimensional object unless the displayed image is constantly moving (rotating or finely moving).

For this reason, as a method for reducing fatigue of eyes and the like and displaying still images stereoscopically, a technique has been proposed in which a plurality of display panels are arranged on the observer's line of sight to allow the observer to recognize the stereoscopic effect. (For example, Patent Document 1 and Patent Document 2). In addition, a technique has been proposed in which an EL element is used as a display element, and, for example, a plurality of display panels with different emission colors are arranged in a stacked manner to display one screen (for example, see Patent Document 3).
JP 2004-219484 A JP 2004-361467 A JP 2002-287668 A

The problem to be solved is that in the above-described conventional technology, a stereoscopic image can be visually recognized by a visual angle when a display screen is observed from a predetermined angle, that is, a single direction. The observation from is not taken into account.
That is, in the above-described conventional technology, for example, observation from the back side is not considered. Moreover, it was not possible to see from any direction. Therefore, the application range (field) of the display device has been limited.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a stereoscopic display device capable of visually recognizing a stereoscopic display image from a plurality of directions.

  In order to solve the above problems, the invention described in claim 1 relates to a stereoscopic display device in which a plurality of display panel bodies are stacked to form a three-dimensional image, and each of the display panel bodies has a light-transmitting insulation. A plurality of light-transmitting pixels made of a light-transmitting light-emitting material are two-dimensionally arranged on a conductive substrate and configured to be visible from both sides, and the plurality of display panel bodies are stacked. It is characterized in that it is configured to obtain a three-dimensional image.

  According to a second aspect of the present invention, a long flexible display panel body is rolled up or folded in the long direction and laminated in a plurality of layers to form a three-dimensional image. In the stereoscopic display device, the flexible display panel includes a light-transmitting insulating substrate, a plurality of light-transmitting pixels made of a light-transmitting light-emitting material, two-dimensionally arranged, and It is configured to be visible from both sides, and is characterized in that the flexible display panel body is rolled up or folded and laminated to obtain a three-dimensional image.

  The invention according to claim 3 relates to the stereoscopic display device according to claim 1 or 2, wherein the display panel body or the flexible display panel body is placed on the insulating substrate in a first direction. A plurality of data electrodes arranged along the first direction, a plurality of scan electrodes arranged along a second direction substantially orthogonal to the first direction, an intersection of the data electrodes and the scan electrodes, and 1 The plurality of pixels corresponding to one-to-one is formed, and a scan signal is applied to each of the scan electrodes and a display signal corresponding to the data electrode is applied, thereby corresponding to the display signal. Electric power is supplied to the pixel, and the pixel emits light to obtain a three-dimensional display image.

  According to a fourth aspect of the present invention, there is provided the stereoscopic display device according to the first, second or third aspect, wherein the pixel has an electroluminescent layer containing an organic material as the translucent light emitting material. It is characterized by being sandwiched between a pair of translucent electrodes.

  According to a fifth aspect of the invention, there is provided the stereoscopic display device according to the first aspect, wherein the insulating substrate is flexible.

  The invention according to claim 6 relates to the stereoscopic display device according to claim 5, wherein each of the display panel bodies is formed in a substantially cylindrical shape, and is displayed from an arbitrary direction toward the center along the radial direction. The screen is configured to be visible.

  According to a seventh aspect of the invention, there is provided the stereoscopic display device according to the fifth aspect, wherein a large number of the pixels are arranged on a curved surface formed by bending the display panel body.

  An eighth aspect of the invention relates to the stereoscopic display device according to any one of the first to seventh aspects of the present invention, and a display switching control for displaying a display object by rotating it around a predetermined rotation axis by a predetermined angle. It is characterized by having means.

  The invention according to claim 9 relates to the stereoscopic display device according to any one of claims 1 to 8, wherein the display panel body or the flexible display panel body corresponds to the data electrodes. A plurality of power supply electrodes are arranged along the first direction for supplying power to the pixels, and a scan signal is applied to the scan electrodes and corresponds to the data electrodes. When a display signal is applied, power is supplied from the power supply electrode to the pixel corresponding to the display signal, and the pixel emits light to obtain a three-dimensional display image.

  The invention described in claim 10 relates to the stereoscopic display device according to claim 9, wherein the display panel body or the flexible display panel body is formed on the insulating substrate, and the pixel and the power source are provided. Provided in the vicinity of the intersection of the first switching element interposed between the scanning electrode and the scanning electrode and the data electrode, the display signal is switched by the scanning signal, and the first switching element is And a second switching element for switching to supply a predetermined current to the corresponding pixel.

  An eleventh aspect of the present invention relates to the stereoscopic display device according to any one of the fourth to eighth aspects, wherein the pixels have a first band-like shape in which extending directions intersect with each other and both have translucency. The electrode and the second electrode are formed at a position where the electroluminescent layer is sandwiched, and one of the first electrode and the second electrode is used as the data electrode and the data electrode. It is used as a power supply electrode for supplying power to each pixel, and the other electrode is used as the scanning electrode.

  According to the configuration of the stereoscopic display device of the present invention, a plurality of display panel bodies or flexible display panel bodies are stacked, and a plurality of pixels form a three-dimensional image, and each display panel body or flexible display panel The body has a light-transmitting insulating substrate and pixels made of a light-transmitting light-emitting material formed on the insulating substrate, and the electrodes sandwiching the light-transmitting light-emitting material are also light-transmitting. A stereoscopic display image can be visually recognized from a plurality of directions.

  A plurality of display panel bodies or flexible display panel bodies are stacked, and a plurality of pixels form a three-dimensional image. Each display panel body or flexible display panel body includes a light-transmitting insulating substrate, A pixel made of a light-transmitting light-emitting material formed over an insulating substrate, and an electrode sandwiching the light-transmitting light-emitting material also has a light-transmitting property, so that a three-dimensional display image can be viewed from multiple directions. The purpose was realized.

  FIG. 1 is a perspective view schematically showing a schematic configuration of an organic EL stereoscopic display device according to a first embodiment of the present invention. FIG. 2 is a block diagram showing an electrical configuration of the organic EL stereoscopic display device. 3 is a block diagram showing the electrical configuration of the panel drive unit of the organic EL stereoscopic display device, FIG. 4 is a perspective view showing the configuration of the EL display panel of the organic EL stereoscopic display device, and FIG. 5 is the EL display. 6 is an equivalent circuit diagram showing the electrical configuration of the panel, FIG. 6 is a cross-sectional view showing the configuration of the light emitting element of the EL display panel, and FIGS. 7 and 8 are explanatory diagrams for explaining the operation of the organic EL stereoscopic display device. FIG. 9 is a perspective view for explaining the operation of the organic EL 3D display device.

As shown in FIGS. 1 and 2, the organic EL stereoscopic display device 1 of this example includes a plurality of (r (r: natural number of 2 or more)) flat EL display panels 2 ₀ , 2 ₁ ,. A plurality of ((r-1) sheets) transparent resin or glass transparent panels 3 ₀ , 3 ₁ ,... Interposed between adjacent EL display panels 2 _k (0 ≦ k ≦ (r−1)). , And panel driving units 4 ₀ , 4 ₁ ,... For driving the corresponding EL display panels 2 ₀ , 2 ₁ ,..., And images that generate corresponding image signals based on image data supplied from outside. A signal generation unit 5 and a display control unit 6 that controls each panel driving unit 4 _k are housed in or attached to a housing 7 and are schematically configured.

In this organic EL stereoscopic display device 1, the housing 7 mounts each EL display panel 2 _k and each transparent panel 3 _k on its upper surface in a standing state, and controls each component of the device inside. Control device including a controller and display control unit 6, a video signal processing unit including an image signal generation unit 5, an acoustic device, a power supply unit, an external input interface unit, and a box that also serves as a base in which a cooling device is stored And a transparent resin body or glass transparent case body 9 covering the peripheral side surface and the upper portion of each EL display panel _2k and each transparent panel _3k . A black mask substrate 11 is disposed on the upper surface of the device storage unit 8 (the mounting surface of each EL display panel 2 and each transparent panel 3).

As shown in FIGS. 4 and 5, each EL display panel 2 _k has a light-emitting element 14 r _ijk (14 g _ijk , 14 b _ijk ) (0 ≦ i ≦ (q−1) on a transparent insulating substrate 13 such as a glass substrate, for example. ), 0 ≦ j ≦ (p−1), 0 ≦ k ≦ (r−1)), the scanning line G _jk , the data line Dr _ik (Dg _ik , Db _ik ) and the current supply line Pr _ik (Pg _ik). , Pb _ik ) are arranged in a matrix (p rows and q columns (p, q: natural numbers)), corresponding to each light emitting element 14r _ijk (14g _ijk , 14b _ijk ), the scanning line G _A switching TFT 15r _ijk (15g _ijk , 15b _ijk ) is disposed in the vicinity of the intersection of _jk and the data line Dr _ik (Dg _ik , Db _ik ), and a current supply line is provided to the light emitting element 14r _ijk (14g _ijk , 14b _ijk ). _Prik ( _Pgik , P A driving TFT 16r _ijk (16g _ijk , 16b _ijk ) for supplying a current from b _ik ) is arranged and schematically configured.
Here, the light emitting elements 14r _ijk , 14g _ijk , and 14b _ijk corresponding to the red, green, and blue light emission colors arranged in order along the extending direction of the scanning line G _jk are a single pixel (pixel) 17 _ijk. Is configured.

As shown in FIG. 5, the switching TFT 15r _ijk (15g _ijk , 15b _ijk ) has a gate for the scanning line G _jk , a drain for the data line Dr _ik (Dg _ik , Db _ik ), and a source for driving. The gates of the TFTs 16r _ijk (16g _ijk , 16b _ijk ) are respectively connected. Further, the driving TFT 16r _ijk (16g _ijk , 16b _ijk ) has the gate of the switching TFT 15r _ijk (15g _ijk , 15b _ijk ) and the gate and the source of the driving TFT 16r _ijk (16g _ijk , 16b _ijk ). The current supply line Pr _ik (Pg _ik , Pb _ik ) is passed through a storage capacitor Cr _ijk (Cg _ijk , Cb _ijk ) for holding the voltage between them, and the drain thereof is the light emitting element 14 r _ijk (14 g _ijk , 14b _ijk). ) _Are connected to current supply lines Pr _ik (Pg _ik , Pb _ik ), respectively.

Corresponding scan line _{G jk} and the data line _{Dr ik (Dg ik, Db ik} ) is driven, the predetermined light emitting element _{14r ijk (14g ijk, 14b ijk} ) is selected, the switching TFT15r _ijk (15g _ijk, 15b _ijk ) Is turned on, the storage capacitor Cr _ijk (Cg _ijk , Cb _ijk ) is charged, the driving TFT 16r _ijk (16g _ijk , 16b _ijk ) is turned on, a drain current flows, and the selected light emitting element 14r _ijk (14g _ijk , 14b _ijk ) emits light.

As shown in FIG. 6, each light emitting element 14r _ijk (14g _ijk , 14b _ijk ) has an organic EL layer 19 corresponding to each emission color of red, green and blue, and an anode layer made of a transparent electrode such as an ITO film. 21 and the cathode layer 22.
In this way, p pixels 17 _ijk are arranged in the vertical direction (y-axis direction), p pixels in the horizontal direction (x-axis direction), and r pixels 17 _{ijk in} the depth direction (z-axis direction). It becomes possible. Here, directed in the direction along the normal line of the EL display panel 2 _k, from the back, even from the direction Zf toward the rear from the front (the surface of the cathode layer 22 is formed of an EL display panel 2 _k) in the front direction The stereoscopic display can be viewed even from Zr. In this example, a left-handed coordinate system is used.

The organic EL layer 19 is schematically configured by forming a hole injecting and transporting layer 23, a light emitting layer 24, and an electron injecting and transporting layer 25 in this order on the anode layer 21, and a cathode on the electron injecting and transporting layer 25. Layer 22 is formed.
The hole injection / transport layer 23 facilitates the injection of holes from the anode layer 21, stably transports holes to the light emitting layer 24, and blocks electrons coming from the electron injection / transport layer 25 side. For example, N, N, -diphenyl-N, N, -di (3-methylphenyl) -1,1, -biphenyl-4,4, -diamine (TPD: NN, -diphenyl-N -N, -di (3-methylphenyl) -1-1, -biphenyl-4-4, -diamine) and the like.

In the light emitting layer 24, holes injected from the anode layer 21 and electrons injected from the cathode layer 22 recombine in the light emitting layer 24 to excite organic molecules in the light emitting layer 24 to generate excitons. It has a mechanism that emits light during the relaxation process, and is made of, for example, tris (8-hydroxyquinolinol) aluminum (Alq ₃ : Tris (8-hydroxyquinolinol) Aluminum).
The electron injection / transport layer 25 facilitates injection of electrons from the cathode layer 22 and stably transports electrons to the light emitting layer 24. For example, 3- (4-biphenylyl) -4-phenyl-5- (4- t-butylphenyl) -1,2,4-triazole (3- (4-biphenyl) -4-phenyl-5- (4-t-butylphenyl) -1,2,4-triazole) and the like.

In this example, the scanning line G _jk , the data line Dr _ik (Dg _ik , Db _ik ), the current supply line Pr _ik (Pg _ik , Pb _ik ), the switching TFT 15 r _ijk (15 g _ijk , 15 b _ijk ), and the drive On the transparent insulating substrate 13 on which the TFTs 16r _ijk (16g _ijk , 16b _ijk ) are formed, ITO or the like is formed by sputtering, and then patterned using a photolithography technique to form the anode layer 21.
Next, on the transparent insulating substrate 13 on which the anode layer 21 is formed, for example, N, N, -diphenyl-N, N, -di (3-methylphenyl) -1,1, -biphenyl is formed by vacuum deposition. A hole injection transport layer 23 is formed by depositing -4,4, -diamine or the like in a predetermined pattern using a shadow mask.

Next, similarly, for example, tris (8-hydroxyquinolinol) aluminum or the like is formed on the hole injecting and transporting layer 23 by a vacuum deposition method to form the light emitting layer 25.
Next, for example, 3- (4-biphenylyl) -4-phenyl-5- (4-t-butylphenyl) -1,2,4-triazole or the like is deposited on the light emitting layer 25 to inject electrons. A transport layer 25 is formed.
Next, an ITO film or the like is formed on the electron injecting and transporting layer 25 by sputtering, and then patterned using a photolithography technique to form the cathode layer 22.

In the organic EL layer 19, holes injected from the anode layer 21 and electrons injected from the cathode layer 22 recombine inside the light emitting layer 21 to excite organic molecules that form the light emitting layer 21. A child is generated. Fluorescence generated when the exciton relaxes to the ground state is emitted.
Note that the EL display panels 2k (for example, corresponding wirings such as scanning lines) are electrically connected via a transparent electrode layer formed on the transparent case body 9 as necessary.
Each transparent panel 3 _k has substantially the same dimensions as the EL display panel 2k, has a function as a spacer for maintaining a predetermined separation between the EL display panel 2 _k, through the transparent panel 3 _k The EL display panels 2k are bonded to each other using a resin.

As shown in FIG. 3, each panel drive unit 4 _k supplies a constant current to the horizontal drive unit 28 for driving the scanning line G _jk and the current supply lines Pr _ik (Pg _ik , Pb _ik ). Variable-type constant current circuit section 29 and a vertical side drive section 31 for driving the data lines Dr _ik (Dg _ik , Db _ik ).
The image signal input to the display control unit 6 is converted into R, G, B signals (analog signals) and supplied to the vertical drive unit 31. At the same time, the horizontal synchronizing signal and the vertical synchronizing signal separated from the image signal in the display control unit 6 are supplied to the horizontal driving unit 28 and the vertical driving unit 31 as timing signals.

In this example, as shown in FIGS. 7 and 8, the display control unit 6 performs scanning by surface sequential driving for each EL display panel 2 _k (each layer), and in the depth direction from the first layer to the r-th layer in order. Scanning is performed in the direction indicated by the arrow Zf to display one frame.
The display control unit 6, for the pixels _{17 ijk} used for three-dimensional display to be displayed, the pixel ₁₇ coordinate-controlled _ijk units, along with turning on select, not selected pixel _{17 ijk} of the light emitting element _{14 ijk} off ( And keep transparency. Note that, for example, when the characters are displayed on a plane, the display control unit 6 controls to turn on only a predetermined EL display panel 2 _k among the R EL display panels 2 ₀ , 2 ₁ ,.

Next, the operation of the organic EL stereoscopic display device 1 of this example will be described with reference to FIGS.
The image signal input to the display control unit 6 is converted into R, G, B signals (analog signals) and supplied to the vertical drive unit 31. At the same time, the horizontal synchronizing signal and the vertical synchronizing signal separated from the image signal in the display control unit 6 are supplied to the horizontal driving unit 28 and the vertical driving unit 31 as timing signals.

The horizontal drive unit 28 drives the scanning line G _jk at a predetermined frame frequency and duty ratio based on the supplied timing signal.
In the vertical drive unit 31, R, G, and B signals (analog signals) are serial-parallel converted by, for example, a shift register and a sample and hold circuit, and output as q signals, respectively, and the data line D _rik ( Dg _ik , Db _ik ) are driven. The constant current circuit unit 29 drives the current supply line Pr _ik (Pg _ik , Pb _ik ) with a constant current value determined corresponding to the luminance.

In this example, as shown in FIGS. 7 and 8, the display control unit 6 performs scanning by surface sequential driving for each EL display panel 2 _k (each layer), and in the depth direction from the first layer to the r-th layer in order. Scanning is performed in the direction indicated by the arrow Zf to display one frame.
That is, first, over the entire area of the EL display panel 2 _0, and selects a predetermined light-emitting element (is lit), after the display of the EL display panel 2 ₀ units, adjacent to each other along the depth direction is displayed on the EL display panel 2 _1, which sequentially implemented until the EL display panel 2 _r-1 of the last section (r-th) set to one period, to display one screen of one frame, one frame Repeat the display control operation for the minute.

The display control unit 6, for the pixels _{17 ijk} used for three-dimensional display of the display object, the pixel ₁₇ coordinate-controlled _ijk units, along with turning on select, not selected pixel _{17 ijk} of the light emitting element 14 off ( And keep transparency. Note that, for example, when the characters are displayed on a plane, the display control unit 6 controls to turn on only a predetermined EL display panel 2 _k among the R EL display panels 2 ₀ , 2 ₁ ,.
As a result, a stereoscopic image is displayed as shown in FIG. A stereoscopic image is clearly visually recognized from the front side or the back side.

  Thus, according to the configuration of this example, a plurality of flat EL display panels are arranged so as to be overlapped along the depth direction, a large number of pixels are arranged three-dimensionally, and each display panel is Since the transparent insulating substrate and the transparent light emitting layer formed on the transparent insulating substrate are transparent, and the electrodes sandwiching the light emitting layer are also transparent, an image can be displayed regardless of the front and back surfaces. Even when the device is turned to the rear, the rear screen is displayed.

  In addition, for example, when using parallax or when observing separate left and right images, a stereoscopic image itself can be displayed not only by giving a stereoscopic effect but also by stacking at high density.

In addition, it is possible to perform a stereoscopic display as if the object is present at the display position, and for example, without switching operation, the shape and color of any part of the display object, As in the case of observing an actual object, it is possible to change the viewing direction of the observer and observe it accurately and easily.
That is, in order to see the back side of a display object (for example, a building), for example, when a stereoscopic display virtually generated on a screen is performed using a liquid crystal display in the prior art, an operation is performed. Without having to do anything, the entire view can be easily observed in detail by simultaneous vision of the front, rear, left and right.

In this way, objects are displayed in 3D as if they existed at the display position, and can be observed in the same way as observing actual objects.For example, it can be applied to air defense command systems and construction site supervision systems. Thus, by stereoscopically displaying the field image, it is possible to contribute to easily making appropriate judgments and instructions.
In addition, since a plurality of screens can be displayed in an overlapping manner, a perspective view can be displayed.

Therefore, it can be applied in a wide range, for example, in the medical field, display for displaying 3D data of an MRI apparatus including a magnified display of an affected area using a stereoscopic camera or a stereoscopic endoscope at the time of surgery and a fluoroscopic display. It can be applied to the device.
In the defense field, the present invention can be applied to a display device for an air defense system and a display device for a three-dimensional radar. For example, it can be used as a display device for a three-dimensional radar to visually represent azimuth, altitude, and distance simultaneously.

  Further, in the entertainment field, for example, the present invention can be applied to a display device for attraction development for an amusement park. In the space development field, for example, the present invention can be applied to a display device for developing a new material. In addition, it can be applied to display devices for simulation and on-site monitoring in research and development and manufacturing processes in various industries such as construction, civil engineering, machinery, and chemistry.

  In addition, it can be applied to a display device for displaying a work instead of an actual display of a three-dimensional work such as a sculpture in an art museum or a museum. Further, the present invention can be applied to a display device for, for example, simulation for disaster prevention, crime prevention, and terrorism countermeasures. In addition, for example, it can be used as a virtual reality display in the education field, business field, and the like.

  FIG. 10 is a partially broken perspective view schematically showing a partially broken structure of the organic EL stereoscopic display device according to the second embodiment of the present invention, and FIG. 11 shows the structure of the organic EL stereoscopic display device. FIG. 12 is a perspective view schematically showing a configuration of an EL display panel of the organic EL stereoscopic display device, FIG. 13 is an enlarged view showing an A portion of FIG. 12, and FIG. FIG. 15 is an explanatory diagram for explaining the operation of the organic EL stereoscopic display device, and FIG. 15 is a perspective view for explaining the operation of the organic EL stereoscopic display device.

This example is greatly different from the first embodiment described above in that a plurality of cylindrical EL display panels having different diameters are arranged concentrically.
Since the configuration other than this is substantially the same as the configuration of the first embodiment described above, the same components as those of the first embodiment are the same as those used in FIG. Reference numerals are assigned to simplify the description.

As shown in FIGS. 10 and 11, the organic EL 3D display device 1A of this example has a plurality (r (r: natural number of 2 or more)) cylindrical EL display panels 31 _k (0 ≦ 0) having different diameters. k ≦ (r-1)) cylindrical panel ₃₂ 0, 32 ₁ including, ... are concentrically disposed, are bonded together by a resin-based adhesive or the like, the corresponding EL display panel ₃₁ to 0, 31 _1, drives ... The housing 33 houses a panel driving unit for performing the image processing, an image signal generating unit that generates a corresponding image signal based on image data supplied from the outside, and a display control unit that controls each panel driving unit. Or attached and generally configured.

In the organic EL stereoscopic display device 1A, the casing 33 is placed on the upper surface of each cylindrical panel _32k in a standing state, and a controller that controls each component of the device and the display control unit 6 therein. A box-shaped device storage unit 34 that also serves as a base in which a control device, a video signal processing unit including an image signal generation unit, an audio device, a power supply unit, an external input interface unit, and a cooling device are stored, It has arranged the peripheral surface part and made of a transparent resin covering the upper or glass transparent casing body 35 of the cylindrical panel 32 _k.

A black mask substrate 36 is disposed on the upper surface of the device storage section 34 (the mounting surface of each cylindrical panel 32). Further, the cylindrical panel 32 ₀ of a small central portion most diameter core rod 37 on which a wiring and the like are built is inserted. Further, wirings 38 for connecting the EL display panels 31 ₀ , 31 ₁ ,... Are also arranged on the bottom surfaces of the cylindrical panels 32 ₀ , 32 ₁ ,.
As shown in FIG. 13, each cylindrical panel 32 _k has an EL display panel on the outer peripheral surface side of the EL display panel 31 _k that is flexible and deformed into a substantially cylindrical shape via a sealing layer 39 _k. A transparent resin layer 41 _k that holds 31 _k in a substantially cylindrical shape is laminated, and is formed into a substantially cylindrical shape with a predetermined diameter.

Each EL display panel 31 _k has a matrix shape (p rows) in a region surrounded by scanning lines, data lines, and current supply lines on a flexible transparent insulating substrate such as polyimide. The switching TFTs are arranged in q columns (p, q: natural numbers), and the switching TFTs are arranged in the vicinity of the intersections between the scanning lines and the data lines corresponding to the respective light emitting elements. Further, current is supplied to the light emitting elements from the current supply lines. Driving TFTs for this purpose are arranged and schematically configured.
Here, the light emitting elements corresponding to the red, green, and blue light emission colors arranged in order along the extending direction of the scanning lines constitute a single pixel 42 _ijk .

Each light emitting element is formed such that organic EL layers corresponding to red, green and blue light emission colors are sandwiched between an anode layer made of a transparent electrode such as an ITO film and a cathode layer, and is formed in a matrix (p The pixel 42 _ijk is roughly arranged in rows and q columns (p, q: natural numbers).
In this manner, p pixels along the vertical direction (z-axis direction), q pixels along the circumferential direction, and r pixels 42 _ijk along the radial direction are arranged, and a three-dimensional display of the display object becomes possible. . Here, the number q of pixels in the circumferential direction is set according to the diameter of the EL display panel 31 _k .
Each panel drive unit 4 includes a horizontal drive unit 28, a variable constant current circuit unit 29, and a vertical drive unit 31.

In this example, as shown in FIG. 14, the display control unit 6 performs scanning by surface sequential driving for each EL display panel 31 _k (each layer) and proceeds from the center to the outside in order from the first layer to the r-th layer. Scanning is performed in the direction (direction indicated by arrow R) to display one frame.
That is, over the entire area of the EL display panel 31 _k, by selecting the predetermined light-emitting element (is lit), for one of the EL display panel 31 _k, After the display of the EL display panel 31 _k unit, Display is performed on the adjacent EL display panel 31 _k along the direction from the center to the outside, and this is sequentially performed up to the last (r-th) EL display panel 31 _r-1 for one cycle, and for one frame. One screen is displayed, and the display control operation for one frame is repeated.

The display control unit 6, for the pixels _{42 ijk} used for three-dimensional display to be displayed, the pixel ₄₂ coordinate-controlled _ijk units, along with turning on select off (turns off the light emitting element 42 of the pixel _{42 ijk} unselected ) And maintain transparency. Note that, for example, when displaying the characters on a plane, the display control unit 6 performs control so that only a predetermined EL display panel 31 _k among the r EL display panels 31 ₀ , 31 ₁ ,.
As a result, a stereoscopic image is displayed as shown in FIG.

Thus, according to the configuration of this example, it is possible to obtain substantially the same effect as that of the first embodiment described above.
In addition, since a cylindrical EL display panel is formed by bending a flexible transparent insulating substrate, the display can be viewed from an arbitrary position, and a field of view of 360 ° can be secured.
Therefore, it is particularly effective when observing the same object by a plurality of observers.

FIG. 16 is a perspective view showing a partially developed configuration of an organic EL stereoscopic display device according to a third embodiment of the present invention. FIG. 17 is a diagram for explaining the operation of the organic EL stereoscopic display device. It is explanatory drawing.
This example is greatly different from the first embodiment described above in that the EL display panel is formed into a roll shape (spiral shape).
Since the configuration other than this is substantially the same as the configuration of the first embodiment described above, the description thereof will be simplified. In FIG. 17, the scanning line, the data line, and the current supply line are shown for each pixel as a representative, and the data line and the current supply line are shown using a single line for pixels adjacent to each other. ing.

  As shown in FIG. 16, the organic EL stereoscopic display device 1 </ b> B of this example includes a single EL display panel 51 having a long flexibility and a transparent sheet 52 made of resin or glass, with wiring or the like. Around the built-in mandrel 53, a predetermined number of turns are wound around the built-in mandrel 53, and the layers are bonded to form a cylindrical molded body 54. A panel driving unit for driving the EL display panel 51, and image data supplied from the outside The image signal generation unit that generates the corresponding image signal and the display control unit 6 that controls the panel driving unit are housed in or attached to the housing and are schematically configured. In addition, wiring is disposed on the bottom surface of the cylindrical molded body 54. The cylindrical molded body 54 is housed in a transparent case body made of transparent resin or glass.

The EL display panel 51 includes, for example, a flexible transparent insulating substrate 55 such as polyimide, and a light emitting element surrounded by a scanning line G _jk , a data line D _ik, and a current supply line P _ik . In a matrix (p rows and q columns (p, q: natural numbers)), switching TFTs are arranged in the vicinity of the intersections of the scanning lines G _jk and the data lines D _ik corresponding to the respective light emitting elements. A driving TFT for supplying a current from the current supply line P _ik to the element is arranged and schematically configured.
Here, the light emitting elements corresponding to the respective emission colors of red, green, and blue arranged in order along the extending direction of the scanning line G _jk constitute a single pixel (pixel) 56 _ijk . In this example, one pixel 56 _ijk is arranged in an angle range of 1 °.

Each light emitting element is formed such that organic EL layers corresponding to red, green and blue light emission colors are sandwiched between an anode layer made of a transparent electrode such as an ITO film and a cathode layer, and is formed in a matrix (p Pixels 56 _ijk are arranged roughly in a row q column (p, q: natural number).
In this way, p pixels in the vertical direction (z-axis direction), (q / r) pixels in the circumferential direction and r pixels in the radial direction are arranged, and a three-dimensional display of the display object becomes possible. .
Each panel drive unit includes a horizontal drive unit, a variable constant current circuit unit, and a vertical drive unit.

In this example, the display control unit performs scanning by line-sequential driving over the entire EL display panel 51 as shown in FIG.
Further, the display control unit, for the pixels 56 _ijk used for three-dimensional display to be displayed, the pixel 56 coordinate-controlled _ijk units, along with turning on and selected, the light emitting elements of the pixels 56 _ijk not selected the off (dark) , Keep transparency.

Thus, according to the configuration of this example, it is possible to obtain substantially the same effect as that of the first embodiment described above.
In addition, since the display device is created by bending a flexible transparent insulating substrate into a roll shape, the display can be viewed from an arbitrary position, and a field of view of 360 ° can be secured.

FIG. 18 is a perspective view showing a configuration of an EL display panel of an organic EL stereoscopic display device according to a fourth embodiment of the present invention.
This example is greatly different from the first embodiment described above in that the passive drive method is used in contrast to the active drive method using TFT (Thin Film Transistor).
Since the configuration other than this is substantially the same as the configuration of the first embodiment described above, the description thereof will be simplified.

  As shown in FIG. 18, each EL display panel 61 of the organic EL stereoscopic display device of this example has, for example, a light emitting layer 63r corresponding to each of red, green and blue emission colors on a transparent insulating substrate 62 such as a glass substrate. , 63g, 63b are formed so as to be sandwiched between an anode layer 65 made of a transparent electrode such as an ITO film and a cathode layer 66 in a stripe shape orthogonal to each other in plan view, and in a matrix shape ( Pixels are arranged roughly in p rows and q columns (p, q: natural numbers).

The organic EL layer 64 includes a hole injection transport layer 67 formed on the anode layer 65, light emitting layers 63r, 63g, 63b formed on the hole injection transport layer 67, and light emitting layers 63r, 63g, 63b. The cathode injection layer 66 is formed on the electron injection / transport layer 68.
In this example, the cathode layer 66 functions as a scanning line, and the anode layer 65 functions as a data line and a current supply line.

Thus, according to the configuration of this example, it is possible to obtain substantially the same effect as that of the first embodiment described above.
In addition, the simplified configuration can reduce manufacturing costs, for example.

This example is greatly different from the first embodiment described above in that the object is rotated 180 ° by the operation of the changeover switch so that the display can be reversed.
Since the other configuration is substantially the same as the configuration of the first embodiment described above, the description thereof is omitted.

Thus, according to the configuration of this example, it is possible to obtain substantially the same effect as that of the first embodiment described above.
In addition, since the front and back can be switched, the details of the display object can be easily recognized.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. Are also included in the present invention.
For example, in the above-described embodiment, the case where the three-color independent light-emitting method is used as the colorization method has been described. However, the present invention is not limited to this. For example, a combination of a white organic EL layer and a color filter, a blue organic EL layer, A method using a combination with a color conversion layer may be used.

  Further, the pixels may be formed by forming the light emitting layers of the respective colors to overlap each other. Further, the pixels may be arranged in a mosaic pattern so that the pixels of the EL display panels in each layer do not overlap. In this case, the back side electrode may be composed of a metal electrode.

In addition, a hole injection / transport layer, a light emitting layer, an electron injection / transport layer, or the like may be formed by coating. Further, the constituent material may be changed by separating the hole injecting and transporting layer and the electron injecting and transporting layer into two layers. The transparent electrode is not limited to ITO, and tin oxide (SnO ₂ ) or the like may be used.
Further, the hole injecting and transporting layer may be configured using a hydrazone derivative, a carbazole derivative, a triazole derivative, or the like. The light-emitting layer may be formed using a phenylanthracene derivative, a tetraarylethene derivative, or the like. Further, the electron injecting and transporting layer may be configured using a pyridine derivative, a diphenylquinone derivative, or the like.
The display control unit may be common or provided for each EL display panel. Alternatively, display panels dedicated to RGB may be sequentially stacked, and three overlapping portions may be used as one pixel.

Further, in the first embodiment, not only when observing the front, but embedded in the floor or ceiling, for example, when looking down in a prone state or looking up in a supine state, as shown in FIG. An organic EL three-dimensional display device in which an EL display panel 72 in which a large number of pixels 71,... Are arranged along a direction and a transparent panel 73 are alternately laminated, a mask 74 is arranged on the bottom surface, and is covered with a transparent case 75. 1C may be configured. In addition, the cooling device may be arranged on the upper part.
Moreover, it replaces with the transparent panel 73, arrange | positions a liquid crystal panel, controls the light transmittance for every pixel, and is visually recognized from one side out of the front side and the back side among the light radiated | emitted from the light emitting element, for example. As an impossibility, light unnecessary for stereoscopic display may be shielded.

Further, in the second embodiment and the third embodiment, it may be configured to be visible from the side or from above. Further, for example, when a multi-layered cylindrical structure is used, it may be configured to increase the brightness of a deep part.
Further, a long single EL display panel may be used to fold and display a plurality of layers. Further, a plurality of pairs of flat organic EL panels may be arranged in a polygonal shape, for example, without bending the EL display panel.

  In the fifth embodiment, the rotation angle of the display object is not limited to 180 ° (front and back inversion), and may be an arbitrary angle. In the second embodiment and the third embodiment, the display object may be configured to be rotatable at a predetermined rotation angle.

  As an EL layer, in addition to an organic EL, it can be applied when an inorganic EL is used.

1 is a perspective view schematically showing a schematic configuration of an organic EL stereoscopic display device according to a first embodiment of the present invention. It is a block diagram which shows the electric constitution of the organic electroluminescent three-dimensional display apparatus. It is a block diagram which shows the electrical structure of the panel drive part of the organic electroluminescent 3D display apparatus. It is a perspective view which shows the structure of EL display panel of the organic EL three-dimensional display apparatus. It is an equivalent circuit diagram which shows the electric constitution of the same EL display panel. It is sectional drawing which shows the structure of the light emitting element of the same EL display panel. It is explanatory drawing for demonstrating operation | movement of the organic electroluminescent three-dimensional display apparatus. It is explanatory drawing for demonstrating operation | movement of the organic electroluminescent three-dimensional display apparatus. It is a perspective view for demonstrating operation | movement of the organic electroluminescent three-dimensional display apparatus. It is a partially broken perspective view which shows the structure of the organic electroluminescent three-dimensional display apparatus which is the 2nd Example of this invention partially broken, and shows typically. It is a bottom view which shows typically the structure of the same organic EL three-dimensional display apparatus. It is a perspective view which shows the structure of EL display panel of the organic EL three-dimensional display apparatus. It is an enlarged view which expands and shows the A section of FIG. It is explanatory drawing for demonstrating operation | movement of the organic electroluminescent three-dimensional display apparatus. It is a perspective view for demonstrating operation | movement of the organic electroluminescent three-dimensional display apparatus. It is a perspective view which expands and shows partially the structure of the organic electroluminescent three-dimensional display apparatus which is the 3rd Example of this invention. It is explanatory drawing for demonstrating operation | movement of the organic electroluminescent three-dimensional display apparatus. It is a perspective view which shows the structure of the EL display panel of the organic electroluminescent three-dimensional display apparatus which is the 4th Example of this invention. It is a perspective view which shows typically schematic structure of the organic electroluminescent three-dimensional display apparatus which is a modification of the 1st Example of this invention.

Explanation of symbols

1,1A, 1B, 1C Organic EL 3D display device (3D display device)
_2k EL display panel (display panel body)
13 Transparent insulating substrate (insulating substrate)
14r _ijk , 14g _ijk , 14b _ijk light emitting element 15r _ijk , 15g _ijk , 15b _ijk switching TFT (second switching element)
16r _ijk , 16g _ijk , 16b _ijk driving TFT (first switching element)
17 _ijk pixel 21 anode layer (translucent electrode, first electrode or second electrode)
22 Cathode layer (translucent electrode, second electrode, or first electrode)
24 Light emitting layer (electroluminescent layer)
51 EL display panel (flexible display panel)
Dr _ik , Dg _ik , Db _ik data lines (data electrodes)
G _jk scanning line (scanning electrode)
_Prik , _Pgik , _Pbik current supply line (electrode for power supply)

Claims (11)

A three-dimensional display device in which a plurality of display panel bodies are stacked to form a three-dimensional image,
Each of the display panel bodies is configured such that a plurality of light-transmitting pixels made of a light-transmitting light-emitting material are two-dimensionally arranged on a light-transmitting insulating substrate and are visible from both sides. ,
A stereoscopic display device characterized in that a three-dimensional image is obtained by laminating the plurality of display panel bodies. A long flexible display panel body is a three-dimensional display device that forms a three-dimensional image by being rolled up or folded in a roll shape in the longitudinal direction and laminated in a plurality of layers,
In the flexible display panel body, a plurality of light-transmitting pixels made of a light-transmitting light-emitting material are two-dimensionally arranged on a light-transmitting insulating substrate and can be viewed from both sides. Configured,
A stereoscopic display device characterized in that a three-dimensional image is obtained by winding or folding the flexible display panel body. The display panel body or the flexible display panel body includes a plurality of data electrodes arranged along a first direction on the insulating substrate, and a second substantially orthogonal to the first direction. A plurality of scan electrodes arranged along a direction, and a plurality of pixels corresponding to the intersections of the data electrodes and the scan electrodes in a one-to-one relationship.
When a scanning signal is applied to each scanning electrode and a display signal corresponding to the data electrode is applied, electric power is supplied to the pixel corresponding to the display signal, and the pixel emits light, thereby three-dimensionally. A 3D display device according to claim 1, wherein a display image is obtained.   The said pixel has an electroluminescent layer containing the organic material as said translucent luminescent material, and is clamped by a pair of translucent electrode. 3D display device.   The stereoscopic display device according to claim 1, wherein the insulating substrate is flexible.   6. The display panel according to claim 5, wherein each of the display panel bodies is formed in a substantially cylindrical shape, and the display screen is visible from an arbitrary direction toward the center along the radial direction. 3D display device.   6. The stereoscopic display device according to claim 5, wherein a large number of the pixels are arranged on a curved surface formed by bending the display panel body.   The stereoscopic display device according to any one of claims 1 to 7, further comprising display switching control means for displaying a display object by rotating the display object by a predetermined angle around a predetermined rotation axis.   The display panel body or the flexible display panel body is arranged along the first direction corresponding to the data electrodes, and has a plurality of power supply electrodes for supplying power to the pixels. Thus, when a scanning signal is applied to each scanning electrode and a display signal corresponding to the data electrode is applied, power is supplied from the power supply electrode to the pixel corresponding to the display signal. The three-dimensional display device according to claim 1, wherein a three-dimensional display image is obtained when the pixels emit light.   The display panel body or the flexible display panel body is formed on the insulating substrate, and includes a first switching element interposed between the pixel and the power supply electrode, the scan electrode, and the data. The first switching element is provided in the vicinity of the intersection with the electrode, and the display signal is switched by the scanning signal to switch the first switching element to supply a predetermined current to the corresponding pixel. The stereoscopic display device according to claim 9, comprising two switching elements. The pixel is formed at a position where the electroluminescent layer is sandwiched between a strip-shaped first electrode and a second electrode whose extending directions intersect with each other and have translucency, and the first electrode And the second electrode are used as the data electrode and used as a power supply electrode for supplying power to each pixel, and the other electrode is used as the scanning electrode. The three-dimensional display device according to claim 4, wherein:

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