Autostereoscopic device and method for generating 3D images

Abstract

An autostereoscopic device and a method for generating an autostereoscopic image are disclosed. The device includes a substrate, a first imaging layer disposed on the substrate, a second imaging layer, a light-transmitting layer between the first imaging layer and the second imaging layer, and an addressing unit. The addressing unit is used to adjust the first imaging layer and the second imaging layer substantially simultaneously to generate an autostereoscopic image. The imaging layers may be heat-sensitive, or they may include capsules containing electrophoretic responsive particles.

Description

[0001] Related Applications

[0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 948,926, filed on December 17, 2019, the entire contents of which are incorporated herein by reference along with all other patents and patent applications disclosed herein. Technical Field

[0003] The present invention relates to the field of 3D image devices, and more particularly to an autostereoscopic device including a parallax barrier. Background Art

[0004] Autostereoscopic devices can generate 3D images without the need for special glasses. Some autostereoscopic devices include a parallax barrier. A conventional parallax barrier includes a layer of light barriers and slits or pinholes having a fixed pattern. The parallax barrier is placed in front of and spaced apart from a second layer (an imaging layer that provides image-specific information). The parallax barrier selectively blocks light emitted or modulated by the second layer so that the left and right eyes of a properly positioned observer see a 3D image. Conventional fixed parallax barriers have several disadvantages, including narrow viewing angles and dark images caused by light absorption by the light barriers.

[0005] The content-adaptive autostereoscopic device also includes at least two spaced-apart layers. However, the parallax barrier layer does not have a fixed pattern, but rather has a light-transmitting, non-binary image that can vary depending on the content to be produced. Essentially, one light-transmitting, independently controllable device acts as a parallax barrier, and a second independently controllable device forms the back layer. The combination of two variable layers allows for wider viewing angles and brighter images than would be the case with a fixed parallax barrier. However, this comes at the expense of a significantly more complex device that requires a controller capable of coordinating the images produced by the first and second layers. In addition, the multi-layer imaging medium and electrode layers compromise the transparency of the parallax barrier layer.

[0006] An autostereoscopic device including a conventional parallax barrier is produced from at least two separately printed images, at least one of which is disposed on a substrate, which are then joined together for precise registration. Similarly, an autostereoscopic device with a content-adaptive parallax barrier is produced from two separate displays (e.g., LCD displays) that need to be precisely registered to each other.

[0007] Therefore, there is a need for improved 3D devices with parallax barriers. Summary of the invention

[0008] Aspects of the present invention overcome the shortcomings of previous systems and methods by providing an autostereoscopic apparatus and method for generating an image by addressing two imaging layers using a single addressing unit or two addressing units.

[0009] In one aspect, an autostereoscopic device for generating an autostereoscopic image is provided. The device includes a substrate, a first imaging layer disposed on the substrate, a second imaging layer, a light-transmitting layer between the first imaging layer and the second imaging layer, and an addressing unit, the addressing unit including a heating element. The first and second imaging layers include first and second materials having thermally tunable optical properties, respectively. The addressing unit is configured to apply heat to the first imaging layer and the second imaging layer. The first imaging layer and the second imaging layer generate an autostereoscopic image.

[0010] In another aspect, an autostereoscopic device for generating an autostereoscopic image is provided, comprising a substrate, a first imaging layer disposed on the substrate, a second imaging layer, a light-transmitting layer between the first imaging layer and the second imaging layer, a first addressing unit comprising a first heating element, and a second addressing unit comprising a second heating element. The first and second imaging layers respectively comprise first and second materials having thermally tunable optical properties. The first addressing unit is configured to apply heat to the first imaging layer, and the second addressing unit is configured to apply heat to the second imaging layer. The first imaging layer and the second imaging layer generate an autostereoscopic image.

[0011] In another aspect, an autostereoscopic device is disclosed that includes a substrate having a plurality of electrodes, a first layer of microcapsules on the substrate including a first dispersion of electrophoretic particles, a second layer of microcapsules including a second dispersion of electrophoretic particles, and a layer of light-transmitting microcapsules between the first and second layers. The light-transmitting microcapsules may consist essentially of a light-transmitting fluid.

[0012] In yet another aspect, a method for producing an autostereoscopic image is provided. The method includes the following steps: (a) providing an autostereoscopic device, the device including a substrate, a first imaging layer including a first material having thermally tunable optical properties, the first imaging layer disposed on the substrate, a second imaging layer including a second material having thermally tunable optical properties, a light-transmitting layer located between the first and second imaging layers, and an addressing unit including a heating element; and (b) heating the first and second imaging layers using the addressing unit so that the first and second imaging layers generate an autostereoscopic image. The method may also include the following steps: (c) providing three-dimensional image data to a controller; (d) calculating an image to be generated by the first and second imaging layers; and (e) controlling the amount of heat applied to the first and second imaging layers by the addressing unit. The autostereoscopic device used in the method may also include a second addressing unit, and the heating step may include heating the first imaging layer using the addressing unit and heating the second imaging layer using the second addressing unit.

[0013] In another aspect, a method for generating an autostereoscopic image is provided. The method comprises the following steps: (a) providing an autostereoscopic device comprising a substrate having a plurality of electrodes, a first layer of microcapsules on the substrate comprising a first dispersion of electrophoretic particles, a second layer of microcapsules comprising a second dispersion of electrophoretic particles, and a layer of light-transmitting microcapsules between the first layer and the second layer; (b) providing three-dimensional image data to a controller; (c) calculating an image to be displayed by the first layer and the second layer of microcapsules; and (d) controlling the plurality of electrodes so that the plurality of electrodes apply an electric field to the first layer and the second layer of microcapsules, and the first layer and the second layer of microcapsules generate an autostereoscopic image. The light-transmitting microcapsules of the autostereoscopic device used in the method may consist essentially of a light-transmitting fluid.

[0014] It should be appreciated that the above-described features may be combined in any number of various ways to describe an apparatus or method incorporating the features disclosed herein.

[0015] The above advantages of the present invention will appear in the following detailed description.In the description, reference is made to the accompanying drawings which show preferred aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic side view of an apparatus for generating an autostereoscopic image according to a first embodiment of the present invention.

[0017] Figures 2A to 2E is a schematic side view of an apparatus for generating an autostereoscopic image according to a second embodiment of the present invention.

[0018] The present invention may be embodied in various forms without departing from the spirit or essential features of the present invention. The scope of the present invention is defined in the appended claims rather than in the detailed description preceding them. Therefore, all aspects falling within the equivalent meaning and scope of the claims are intended to be covered by the claims. DETAILED DESCRIPTION

[0019] The present invention will now be described in more detail with reference to the following aspects. It should be noted that the following aspects set forth herein are for illustration and description purposes only. It is not intended to be exhaustive or limited to the precise forms disclosed.

[0020] It should be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having" and variations thereof as used herein are meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

[0021] As used herein, "consisting essentially of" means that the composition or component may include additional ingredients, but only if the additional ingredients do not materially alter the basic and novel characteristics of the claimed composition or method.

[0022] Furthermore, the disclosed subject matter may be implemented as an apparatus, method, device, or article of manufacture using standard programming and / or engineering techniques and / or programming to produce hardware, firmware, software, or any combination thereof to implement the aspects detailed herein.

[0023] The various aspects of the present invention will be described in conjunction with an apparatus for producing an autostereoscopic image. The features and advantages that arise due to aspects of the present invention are well suited for this purpose. Nevertheless, it should be understood that the various aspects of the present invention can be applied to other applications and can also achieve other goals.

[0024] Referring now to the drawings and more particularly to Figure 1 , shows an apparatus for generating an autostereoscopic image according to a first embodiment of the present invention. The apparatus 100 includes an imaging member 101 and an addressing unit 102. The imaging member 101 includes a first imaging layer 104, a second imaging layer 108, and a light-transmitting layer 106 disposed between the first imaging layer 104 and the second imaging layer 108, disposed on a substrate 110. The first imaging layer 104 and the second imaging layer 108 are preferably light-transmitting and colorless, but contain materials having thermally tunable optical properties. As used herein, a "light-transmitting" layer refers to a layer that transmits enough light to enable an observer to observe a change in the optical state of the layer or another material on the other side of the layer through the layer from one side. The material having thermally tunable optical properties in the first and second imaging layers can absorb light of specific wavelengths defined by a first absorption spectrum and a second absorption spectrum, respectively. In some aspects of the present invention, the first and second absorption spectra are the same, that is, they can absorb light of the same wavelength. However, in other aspects, the first and second absorption spectra overlap, but are not the same. The thermally tunable optical properties of the first material are transformed at a first temperature, and the thermally tunable optical properties of the second material are transformed at a second temperature. The first temperature can be higher than the second temperature.

[0025] An optional light-transmissive protective layer 112 may also be disposed on the first imaging layer 104. In yet another aspect, if the imaging member 101 is intended to form a reflective device, the substrate 110 may include a reflective sheet ( Figure 1 Alternatively, substrate 110 may be a release sheet that is subsequently removed so that imaging member 101 may be laminated to light emitting member ( Figure 1 (not shown) on the image forming layer, the light emitting component includes a backlight source for illuminating the imaging layer and providing a light emitting device.

[0026] The imaging layers 104 and 108 are optically adjustable so that their respective absorption spectra can be changed when the addressing unit 102 is used to address the imaging member 101. The addressing unit 102 is capable of substantially simultaneously addressing the first imaging layer 104 and the second imaging layer 108, thereby providing an automatically registered autostereoscopic device. As previously described, the imaging layers 104 and 108 are preferably light-transmissive and colorless; however, specific locations on the imaging layers can be individually addressed to adjust the color, i.e., the absorption / reflection characteristics, of the specific locations. This allows a unique image to be produced on each imaging layer. When adjusted, the first imaging layer 104 or the second imaging layer 108 can form a parallax barrier, while the other of the first imaging layer 104 and the second imaging layer 108 provides a rear image observed through the parallax barrier, and the optically adjusted first imaging layer 104 and the second imaging layer 108 together generate an autostereoscopic image.

[0027] In one aspect, the desired three-dimensional image is provided to a controller, which calculates the images to be produced on the first and second imaging layers to form the three-dimensional image. As used herein, the term "controller" may include one or more processors and memory and / or one or more programmable hardware elements, and is intended to include any type of processor, CPU, microcontroller, digital signal processor, or other device capable of executing software instructions. The controller transmits the image to be produced to the addressing unit 102, which adjusts the first imaging layer 104 and the second imaging layer 108 accordingly. In some aspects, the controller can be a component of the device 100; however, the calculation of the image to be produced can also be completed remotely and transmitted to the device 100.

[0028] In one non-limiting aspect of the invention, the first imaging layer 104 and the second imaging layer 108 are heat sensitive. Applying heat to one location of the imaging layer changes the optical properties of the material in that location, thereby adjusting their respective absorption spectra. The addressing unit 102 has a heating element for applying heat to the imaging member 101, and the light-transmissive layer 106 can be thermally insulating to control heat transfer through the imaging member 101. Because the addressing unit 102 is in contact with only one surface of the imaging member 101, the first imaging layer 104 can be less sensitive to heat than the second imaging layer 108, so that changes in the timing and intensity of heat applied to the surface of the imaging member 101 can cause the materials in the first imaging layer 104 and the second imaging layer 108 to be optically adjusted individually. The light transmittance or color of the adjusted areas in the first imaging layer 104 and the second imaging layer 108 can also be changed, thereby improving the viewing angle of the image produced by the device.

[0029] An example of an apparatus including a single addressing unit capable of individually adjusting the first and second imaging layers is disclosed, for example, in U.S. Pat. No. 7,408,563, the entire contents of which are incorporated herein by reference. The apparatus eliminates the additional step of precisely registering the first and second imaging layers by providing for substantially simultaneous formation of a parallax barrier and a rear image from two pre-laminated imaging layers. In another embodiment, the apparatus may include a second addressing unit applied to an opposing surface of the imaging member such that the first addressing unit adjusts the optical properties of the first imaging layer and the second addressing unit adjusts the optical properties of the second imaging layer.

[0030] Direct thermal imaging techniques can be used to form an image by heating a corresponding imaging layer, which may initially be colorless, by an addressing unit. In direct thermal imaging, no ink, toner, or thermal transfer ribbon is required. Instead, the chemicals required to form the image are present in the imaging member itself. A discussion of various direct thermal color imaging methods is provided in U.S. Patent No. 6,801,233 B2, the entire contents of which are incorporated herein by reference. In the method of the present invention, an imaging member having two or more imaging layers is addressed by an addressing unit, which may be a thermal print head, to provide a color image. The image may include multiple colors. The imaging member may be addressed in more than one pass of the addressing unit, at least one pass being at a different speed than at least another pass. Optionally, the imaging member is preheated in at least one pass to a different degree than at least another pass. The heating may be direct heating or indirect heating. Each imaging layer may change color, for example from an initially colorless to a colored color, where it is heated to a specific temperature referred to herein as its activation temperature. All layers of the image member may be transparent before color formation. The imaging layers can be addressed at least partially independently by varying two adjustable parameters, namely temperature and time. By selecting the temperature of the addressing unit (e.g., thermal print head) and the time period for which heat is applied to the thermal imaging member, these parameters can be adjusted to obtain the desired result in any particular case. Thus, each color of a multicolor imaging member can be printed alone or with other colors in a selectable proportion. The temperature-time domain is divided into regions corresponding to the different colors desired to be obtained in the final image. The imaging layers of the imaging member undergo a color change to provide the desired image in the imaging member. The color change can be from colorless to colored, from colored to colorless, or from one color to another. The term "imaging layer" includes all of these options. Each imaging layer can be addressed independently by applying heat with a thermal print head in contact with the topmost layer of the member. In an imaging member having two imaging layers, the activation temperature of the second imaging layer (i.e., the imaging layer closest to the surface of the thermal imaging member) is higher than the activation temperature of the first imaging layer.

[0031] Reference now Figures 2A to 2E , showing a second embodiment of the device according to the present invention. Figures 2A to 2E An imaging member of an apparatus for generating an autostereoscopic image is shown. The imaging member includes a first imaging layer 204 and a second imaging layer 208 separated by a light transmissive layer 206. A substrate 210 on which the first imaging layer is located includes a plurality of electrodes for addressing the first imaging layer 204 and the second imaging layer 208.

[0032] The first imaging layer 204 and the second imaging layer 208 preferably each include a plurality of light-transmitting microcapsules containing a dispersion of electrophoretic responsive particles disposed in a carrier medium such as a fluid. The electrophoretic particles in the first and second imaging layers may or may not have the same absorption spectra and / or electrophoretic mobility.

[0033] Numerous patents and applications assigned to or in the name of the Massachusetts Institute of Technology (MIT) and Ink Corp. describe various techniques for encapsulated electrophoretic and other electro-optical media. The techniques described in these patents and applications, which are incorporated herein by reference in their entirety, include:

[0034] (a) electrophoretic particles, fluids, and fluid additives; see, e.g., U.S. Pat. Nos. 7,002,728 and 7,679,814;

[0035] (b) capsules, binders and encapsulation processes; see, e.g., U.S. Pat. Nos. 6,922,276 and 7,411,719;

[0036] (c) microcell structures, wall materials, and methods of forming microcells; see, e.g., U.S. Pat. Nos. 7,072,095 and 9,279,906;

[0037] (d) Methods for filling and sealing microlocations; see, e.g., U.S. Pat. Nos. 7,144,942 and 7,715,088;

[0038] (e) Films and subassemblies containing electro-optical materials; see, e.g., U.S. Patent Nos. 6,982,178 and 7,839,564;

[0039] (f) Backplanes, adhesive layers and other auxiliary layers and methods for use in displays; see, e.g., U.S. Pat. Nos. 7,116,318 and 7,535,624;

[0040] (g) color formation and color adjustment; see, e.g., U.S. Pat. Nos. 7,075,502 and 7,839,564;

[0041] (h) Methods for driving displays; see, e.g., U.S. Patent Nos. 7,012,600 and 7,453,445;

[0042] (i) Display applications; see, e.g., U.S. Patent Nos. 7,312,784 and 8,009,348; and

[0043] (j) Non-electrophoretic displays, such as described in U.S. Patent No. 6,241,921 and U.S. Patent Application Publication Nos. 2015 / 0277160, 2015 / 0005720, and 2016 / 0012710.

[0044] The encapsulated electrophoretic medium includes one or more types of charged pigment particles that move through a fluid under the influence of an electric field to form an image. The encapsulated electrophoretic medium may include a number of small capsules, each of which itself includes charged pigment particles in a fluid medium, and a capsule wall surrounding an internal phase. Typically, these capsules themselves are held in a polymer binder to form a coherent layer located between two electrodes. Alternatively, the charged particles and the fluid may be retained in a plurality of sealed cavities formed in a carrier medium, which is typically a polymer film, commonly referred to as microcells.

[0045] Although electrophoretic media are typically opaque (because, for example, in many electrophoretic media, the particles substantially block visible light from being transmitted through the display) and operate in a reflective mode, many electrophoretic films can be made to operate in a so-called "shutter mode," in which one optical state is substantially opaque and one optical state is light-transmitting. See, for example, U.S. Patents Nos. 5,872,552; 6,130,774; 6,144,361; 6,172,798; 6,271,823; 6,225,971; and 6,184,856. Examples that can operate in this mode include dielectrophoretic displays, which are similar to electrophoretic displays but rely on changes in electric field strength; see U.S. Patent No. 4,418,346.

[0046] In order to provide a desired distance (eg, Figures 2A to 2E ), the light-transmitting layer 206 may include one or more rows of light-transmitting capsules that are substantially composed of a light-transmitting fluid and do not contain optically tunable materials such as electrophoretic particles, so that the optical properties of the light-transmitting layer 206 remain substantially constant during device operation. For example, a display device and a method of driving a device formed by applying a continuous row of encapsulated electrophoretic media are disclosed in U.S. Patent No. 8,576,476, the entire contents of which are incorporated herein by reference.

[0047] The plurality of electrodes 211a and 211b may be used to apply an electric field to the imaging layers 204 and 208 of the imaging member 200, such as Figure 2AAs shown. Applying an electric field to the first imaging layer 204 and the second imaging layer 208 causes the particles to move within their respective capsules, thereby adjusting the respective optical properties of the imaging layers. The plurality of electrodes 211a and 211b can control the first imaging layer 204 and the second imaging layer 208 from one side of the imaging member 200, thereby eliminating the need for any intermediate electrodes or conductive layers that may adversely affect the light transmittance of the device. Depending on the applied voltage waveform, the electrophoretic particles can be driven to different locations within their respective capsules, thereby adjusting the respective optical properties of the imaging layers. For example, referring to Figure 2A , the electrophoretic particles 209 in the first imaging layer 204 and the electrophoretic particles 207 in the second imaging layer 208 may have similar charge polarity and may be driven toward a transparent "open" state, where the particles aggregate toward the sidewalls of the capsule.

[0048] exist Figure 2B In another example depicted in , the imaging member 250 includes electrodes 251a to 251d in the form of concentrator electrodes. The electrophoretic particles 209 in the first imaging layer 204 and the electrophoretic particles 207 in the second imaging layer can have similar charge polarities so that the particles in the two imaging layers can be driven toward multiple electrodes. In this example, the particles 209 in the first imaging layer 204 are shielded by being concentrated in a small area near the electrode. Similarly, because the microcapsules 205 in the second imaging layer 208 can include conical or pyramidal grooves 203, the particles 207 in the second imaging layer 208 can also be shielded by concentrating the particles 207 in a small area, thereby providing an imaging member with a transparent optical state.

[0049] exist Figure 2C In , addressing the microcapsules with different frequencies or voltages may cause the particles 209 to spread out so that an observer will observe the optical properties of the particles 209. Figure 2D In the equation, the polarity of the electric field is Figure 2C As a result, the particles 209 in the first imaging layer 204 are shielded by concentrating the particles 209 in the conical or pyramidal grooves 201 of the microcapsules 215 in the first imaging layer 204, and the particles 207 are dispersed on one side of the microcapsules 208, so that the optical characteristics of the particles 207 can be observed. Figure 2E As shown, because electrodes 211a and 211b are independently addressable, imaging layers 204 and 206 can be adjusted differently at different pixel locations.

[0050] Imaging member 200 (in Figures 2A to 2E214 may be adhered to the second imaging layer 208 with an adhesive (preferably an optically clear adhesive). If the device is viewed from the side of the protective layer 214, the protective layer 214 is preferably light transmissive. In addition, if the device is a reflective display, an optional reflective layer 212 may be included below the first imaging layer 212. In another embodiment, the substrate 210 may include a reflective material. Alternatively, if the reflective display is viewed from the opposite side (not from the protective layer side), the substrate 210 is preferably light transmissive and the protective layer 214 may be reflective. In yet another embodiment, the imaging member 200 may be used to form an emissive display, wherein preferably both the protective layer 214 and the substrate 210 are light transmissive so that a backlight may be applied to either side of the imaging member 20.

[0051] The imaging member can further communicate with the controller ( Figures 2A to 2E The controller can calculate the images to be produced on the first imaging layer 204 and the second imaging layer 208 when receiving the desired three-dimensional image. The controller can then control the plurality of electrodes to apply an electric field to the microcapsules 205 and 215, which will form two images and generate an autostereoscopic image. The calculation can be performed locally or remotely.

[0052] The illustrative aspects of the present invention have been described in detail above. Various modifications and additions may be made without departing from the scope thereof. In addition, since many modifications and variations are readily apparent to those skilled in the art, it is not desirable to limit the present invention to the exact configuration and operation shown and described. For example, any of the various features described herein may be combined with some or all of the other features described herein according to alternative aspects. Although preferred aspects have been described, details may be changed without departing from the present invention as defined by the claims.

[0053] Finally, it is expressly contemplated that any of the processes or steps described herein may be combined, eliminated, or reordered. In other aspects, instructions may reside in a computer-readable medium, where those instructions are executed by a processor to perform one or more of the processes or steps described herein. Thus, it is expressly contemplated that any of the processes or steps described herein may be implemented as hardware, software, including program instructions executed on a computer, or a combination of hardware and software. Thus, this description is intended only as an example and does not otherwise limit the scope of the present invention.

Claims

1. An automatic stereoscopic display device, comprising: substrate; A first imaging layer, comprising a first material having thermally tunable optical properties, the first imaging layer being disposed on the substrate; a second imaging layer comprising a second material having thermally tunable optical properties; a light-transmitting layer located between the first imaging layer and the second imaging layer; as well as comprising an addressing unit for the heating element, The addressing unit is configured to apply heat to the first imaging layer to generate a first image and to apply heat to the second imaging layer to generate a second image, such that the first image and the second image form an autostereoscopic image.

2. The autostereoscopic display device according to claim 1, wherein: The first imaging layer has a first absorption spectrum, and The second imaging layer has a second absorption spectrum, The first absorption spectrum and the second absorption spectrum are the same.

3. The autostereoscopic display device according to claim 1, wherein: The thermally tunable optical property of the first material transitions at a first temperature, and the thermally tunable optical property of the second material transitions at a second temperature.

4. The autostereoscopic display device according to claim 3, wherein: The first temperature is higher than the second temperature.

5. The autostereoscopic display device according to claim 1, wherein: The light-transmitting layer is heat-insulating.

6. The autostereoscopic display device according to claim 1, wherein: One of the first imaging layer and the second imaging layer is a parallax barrier.

7. An automatic stereoscopic display device, comprising: substrate; A first imaging layer, comprising a first material having thermally tunable optical properties, the first imaging layer being disposed on the substrate; a second imaging layer comprising a second material having thermally tunable optical properties; a light-transmitting layer located between the first imaging layer and the second imaging layer; a first addressing unit comprising a heating element, wherein the first addressing unit is configured to apply heat to the first imaging layer, and a second addressing unit comprising a heating element, wherein the second addressing unit is configured to apply heat to the second imaging layer, The first imaging layer and the second imaging layer generate an autostereoscopic image.

8. A method for generating an autostereoscopic image, comprising: An autostereoscopic display device according to claim 1 is provided, and The first imaging layer and the second imaging layer are heated with an addressing unit so that the first imaging layer and the second imaging layer generate an autostereoscopic image.

9. The method for generating an autostereoscopic image according to claim 8, further comprising: providing three-dimensional image data to a controller; calculating an image to be produced by the first imaging layer and the second imaging layer; as well as The amount of heat applied by the addressing unit to the first imaging layer and the second imaging layer is controlled.

10. A method for generating an autostereoscopic image, comprising: There is provided an autostereoscopic display device according to claim 7, The first imaging layer is heated with the first addressing unit and the second imaging layer is heated with the second addressing unit such that the first imaging layer and the second imaging layer generate an autostereoscopic image.

11. The method for generating an autostereoscopic image according to claim 10, further comprising: providing three-dimensional image data to a controller; calculating an image to be produced by the first imaging layer and the second imaging layer; as well as The amount of heat applied to the first imaging layer and the second imaging layer by the first addressing unit and the second addressing unit is controlled.

12. An automatic stereoscopic display device, comprising: A substrate with multiple electrodes, A first layer of microcapsules, comprising a first dispersion of electrophoretic particles, the first layer being located on the substrate, a second layer of microcapsules comprising a second dispersion of electrophoretic particles; and a layer of light-transmitting microcapsules between the first layer and the second layer; The plurality of electrodes are configured to apply an electric field to the first layer of microcapsules and the second layer of microcapsules to generate a first image and a second image, respectively, and the first image and the second image form an autostereoscopic image.

13. The autostereoscopic display device according to claim 12, wherein: The light-transmitting microcapsules are substantially composed of a light-transmitting fluid.

14. The autostereoscopic display device according to claim 12, wherein: The electrophoretic particles of the first dispersion have a first absorption spectrum, and the electrophoretic particles of the second dispersion have a second absorption spectrum.

15. The autostereoscopic display device according to claim 14, wherein: The first absorption spectrum is different from the second absorption spectrum.

16. The autostereoscopic display device according to claim 12, wherein: The plurality of electrodes includes a concentrator electrode.

17. A method for generating an autostereoscopic image, comprising: Providing an autostereoscopic display device according to claim 12; providing three-dimensional image data to a controller; calculating an image to be displayed by the first layer of microcapsules and the second layer of microcapsules; as well as The plurality of electrodes are controlled so that the plurality of electrodes apply an electric field to the first layer of microcapsules and the second layer of microcapsules, and the first layer of microcapsules and the second layer of microcapsules generate the autostereoscopic image.

Images