Switchable floating image display device

Abstract

The present invention provides a switchable floating image display device, including a light-emitting stack layer, a light-emitting pattern stack layer, a transparent barrier layer, an optical imaging module, and a power supply module. The light-emitting stack layer is used to generate a first pattern light beam, and the light-emitting pattern stack layer is used to generate a second pattern light beam. The transparent barrier layer is disposed between the light-emitting stack layer and the light-emitting pattern stack layer. The optical imaging module is used to form a first floating image with the first pattern light beam and to form a second floating image with the second pattern light beam. The power supply module is electrically connected to the light-emitting stack layer and the light-emitting pattern stack layer, and is used to determine to generate the first floating image or the second floating image by switching the light emission of the light-emitting stack layer or the light-emitting pattern stack layer.

Description

Technical Field

[0001] The present invention relates to a display device, and more particularly to a switchable floating image display device. Background Art

[0002] With the spread of the COVID-19 pandemic around the world, contactless technologies have become more important, which can effectively prevent the risk of virus contact transmission through public utensils. By adopting contactless interface technology, users do not need to touch the surface of objects, avoiding the residue of body fluids and breaking the route of indirect contact transmission.

[0003] For example, if floating image buttons are made to replace traditional physical buttons, the public can operate normally when taking the elevator, opening or closing doors, or pressing doorbells, etc., without causing contact transmission.

[0004] The traditional three-dimensional image switchable design uses a display to display different images to achieve the effect of image switching. However, the cost of the display is expensive and the design is relatively complex, making it difficult to integrate into devices with lower cost or smaller volume requirements such as floating image buttons. Summary of the Invention

[0005] The present invention is directed to a switchable floating image display device, which has the advantages of simple structure and switchable floating images.

[0006] An embodiment of the present invention provides a switchable floating image display device, including a light-emitting stack layer, a light-emitting pattern stack layer, a transparent barrier layer, an optical imaging module, and a power supply module. The light-emitting stack layer is used to generate a first pattern beam, and the light-emitting pattern stack layer is used to generate a second pattern beam. The transparent barrier layer is disposed between the light-emitting stack layer and the light-emitting pattern stack layer to block the electrical connection between the light-emitting stack layer and the light-emitting pattern stack layer. The optical imaging module is used to form a first floating image with the first pattern beam and to form a second floating image with the second pattern beam. The power supply module is electrically connected to the light-emitting stack layer and the light-emitting pattern stack layer, and is used to determine whether to generate the first floating image or the second floating image by switching the light emission of the light-emitting stack layer or the light-emitting pattern stack layer.

[0007] In the switchable floating image display device according to an embodiment of the present invention, the light-emitting stack layer and the light-emitting pattern stack layer can be used to generate the first pattern beam and the second pattern beam respectively. The optical imaging module forms the first floating image with the first pattern beam and forms the second floating image with the second pattern beam. The power supply module determines whether to generate the first floating image or the second floating image by switching the light emission of the light-emitting stack layer or the light-emitting pattern stack layer. Therefore, the switchable floating image display device according to an embodiment of the present invention has the advantages of simple structure and switchable floating images. Brief Description of the Drawings

[0008] Figure 1 Schematic diagram of a switchable floating image display device according to an embodiment of the present invention;

[0009] Figure 2A is Figure 1 Schematic diagram when the light-emitting stack layer emits light;

[0010] Figure 2B is Figure 1 Schematic diagram when the light-emitting pattern stack layer emits light;

[0011] Figure 3A Schematic diagram of the first floating image provided when the light-emitting stack layer emits light and a user's finger;

[0012] Figure 3B Schematic diagram of the second floating image provided when the light-emitting pattern stack layer emits light and a user's finger;

[0013] Figure 4 is a Figure 1 Schematic three-dimensional diagram of the possible appearance of the switchable floating image display device and one of the floating images formed thereby;

[0014] Figure 5 is Figure 1 Cross-sectional schematic diagram of the detailed structure of the switchable floating image display device;

[0015] Figure 6 Cross-sectional schematic diagram of the detailed structure of the switchable floating image display device according to another embodiment of the present invention;

[0016] Figure 7 Cross-sectional schematic diagram of the detailed structure of the switchable floating image display device according to still another embodiment of the present invention;

[0017] Figure 8 Cross-sectional schematic diagram of the detailed structure of the switchable floating image display device according to yet another embodiment of the present invention;

[0018] Figure 9 Cross-sectional schematic diagram of the detailed structure of the switchable floating image display device according to another embodiment of the present invention;

[0019] Figure 10 Cross-sectional schematic diagram of the detailed structure of the switchable floating image display device according to still another embodiment of the present invention;

[0020] Figure 11 Cross-sectional schematic diagram of the detailed structure of the switchable floating image display device according to still another embodiment of the present invention;

[0021] Figure 12AA schematic diagram showing the light emission of the light-emitting stack layer of the switchable floating image display device according to another embodiment of the present invention;

[0022] Figure 12B is Figure 12A A schematic diagram showing the light emission of the light-emitting pattern stack layer of the switchable floating image display device;

[0023] Figure 13 A cross-sectional view of the switchable floating image display device according to another embodiment of the present invention. Detailed Description of the Invention

[0024] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0025] Figure 1 A schematic diagram of the switchable floating image display device according to an embodiment of the present invention, Figure 2A is Figure 1 A schematic diagram showing the light emission of the light-emitting stack layer, Figure 2B is Figure 1 A schematic diagram showing the light emission of the light-emitting pattern stack layer, Figure 3A A schematic diagram of the first floating image provided when the light-emitting stack layer emits light and a user's finger, Figure 3B A schematic diagram of the second floating image provided when the light-emitting pattern stack layer emits light and a user's finger, and Figure 4 is a three-dimensional schematic diagram showing Figure 1 The possible appearance of the switchable floating image display device and one of the floating images formed thereby. Referring to Figures 1 to 4 , the switchable floating image (image) display device 100 of this embodiment includes a light-emitting stack layer 200, a light-emitting pattern stack layer 300, a transparent barrier layer 110, an optical imaging module 120, and a power supply module 130. The light-emitting stack layer 200 is used to generate a first pattern light beam 202, and the light-emitting pattern stack layer 300 is used to generate a second pattern light beam 302. In this embodiment, the light-emitting stack layer 200 can generate a light-emitting pattern 201 as shown in Figure 2A , and the light-emitting stack layer 300 can generate a light-emitting pattern 301 as shown in Figure 2B , Figure 2A and Figure 2B The light-emitting patterns 201 and 301 in are only schematically shown. In fact, in an embodiment, the light-emitting patterns 201 and 301 can be designed as more complex light-emitting patterns according to requirements, that is, they can be various regular or irregular light-emitting patterns.

[0026] The transparent barrier layer 110 is disposed between the light-emitting stack layer 200 and the light-emitting pattern stack layer 300 to block the electrical connection between the light-emitting stack layer 200 and the light-emitting pattern stack layer 300. The transparent barrier layer 110 is, for example, a transparent insulating layer, and its material can be silicon oxide, silicon nitride, epoxy resin, silicone, or other suitable insulating materials. The optical imaging module 120 is used to form a first floating image (such as Figure 3A the first floating image 203 shown) of the first pattern light beam 202, and is used to form a second floating image (such as Figure 3B the second floating image 303 shown) of the second pattern light beam 302. In this embodiment, the optical imaging module 120 is, for example, a lens array, which can have a plurality of microlenses 122 arranged in a two-dimensional array to form the first floating image and the second floating image of the first pattern light beam 202 and the second pattern light beam 302. The first floating image and the second floating image are light field images. That is to say, the optical imaging module 120 reconstructs the traveling directions and intensities of the first pattern light beam 202 and the second pattern light beam 302, and forms intersection points of many light rays in the three-dimensional space in front of the optical imaging module 120. These intersection points simulate the light reflected from the surface of a real object. When these lights are transmitted to the user's eyes, the user will feel that there is a three-dimensional floating image (i.e., the first floating image and the second floating image) in the space that simulates a three-dimensional real object. The light-emitting pattern 201 generated by the light-emitting stack layer 200 and the light-emitting pattern 301 generated by the light-emitting pattern stack layer 300 are coordinated with the optical imaging module 120, and the optical imaging module 120 reconstructs the first pattern light beam 202 and the second pattern light beam 302 to form the expected light field image. Figure 2A and Figure 2B The light-emitting patterns 201 and 301 in Figure 3A and Figure 3B are only shown schematically. Actually, when forming the light field images (i.e., the first floating image 203 and the second floating image 303) such as Figure 2A and Figure 2B , the light-emitting patterns 201 and 301 corresponding to the optical imaging module 120 will be more complex than Figure 2A and Figure 2B shown. However, in order to simplify the drawings to help understanding, the light-emitting patterns of the light-emitting stack layer 200 and the light-emitting pattern stack layer 300 in the following embodiments are all drawn in a simplified way, but in actual applications, there will be more complex patterns coordinated with the optical imaging module 120. In this embodiment, the first floating image 203 and the second floating image 303 are, for example, three-dimensional images. However, in other embodiments, the first floating image 203 and / or the second floating image 303 can also be two-dimensional images.

[0027] In addition to being a lens array, in other embodiments, the optical imaging module 120 may include a grating, a photonic crystal, an optical fiber, etc. These optical components can also achieve the effect of reconstructing the traveling directions and intensities of the first patterned light beam 202 and the second patterned light beam 302 to form a light field image.

[0028] The power supply module 130 is electrically connected to the light-emitting stack layer 200 and the light-emitting pattern stack layer 300, and is used to determine the generation of the first floating image or the second floating image by switching the light emission of the light-emitting stack layer 200 or the light-emitting pattern stack layer 300. The first floating image and the second floating image may have different shapes, distribution ranges, colors, brightnesses, or combinations thereof.

[0029] Figure 5 is Figure 1 a schematic cross-sectional view of the detailed structure of the switchable floating image display device. Please refer to Figure 1 and Figure 5 , the light-emitting stack layer 200 includes a first electrode 210, a second electrode 220, and a first patterned light-emitting layer 230. The first patterned light-emitting layer 230 is disposed between the first electrode 210 and the second electrode 220 and is used to form the first patterned light beam 202. The light-emitting pattern stack layer 300 includes a third electrode 310, a fourth electrode 320, and a second patterned light-emitting layer 330. The second patterned light-emitting layer 330 is disposed between the third electrode 310 and the fourth electrode 320 and is used to form the second patterned light beam 302. In this embodiment, the second electrode 220, the third electrode 310, and the fourth electrode 320 may be transparent electrodes to allow the first patterned light beam 202 and the second patterned light beam 302 to pass through. In this embodiment, the materials of the second electrode 220, the third electrode 310, and the fourth electrode 320 may be, for example, indium tin oxide (ITO) or other transparent conductive materials. The material of the first electrode 210 may be a metal or a transparent conductive material. That is, the first electrode 210 may be an opaque electrode or a transparent electrode.

[0030] In this embodiment, the light-emitting stack layer 200 may further include a first pattern definition layer 240, for example, used to define the patterns of the first patterned light-emitting layer 230 and the first electrode 210. The light-emitting pattern stack layer 300 may further include a second pattern definition layer 340, for example, disposed between the third electrode 310 and the fourth electrode 320 and used to define the pattern of the second patterned light-emitting layer 330. The pattern of the first pattern definition layer 240 and the patterns of the first patterned light-emitting layer 230 and the first electrode 210 may be, for example, complementary patterns, and the pattern of the second pattern definition layer 340 and the pattern of the second patterned light-emitting layer 330 may be, for example, two complementary patterns. The second pattern definition layer 340 may be formed of a transparent insulating material, which is conducive to allowing the first pattern light beam 202 to pass through. The first pattern definition layer 240 may be formed of an insulating material, which includes a transparent insulating material or an opaque insulating material. In addition, in this embodiment, the light-emitting pattern stack layer 300 is disposed between the light-emitting stack layer 200 and the optical imaging module 120. The optical imaging module 120 may be attached to the light-emitting pattern stack layer 300 or formed thereon by a photolithography process.

[0031] In this embodiment, the first patterned light-emitting layer 230 and the second patterned light-emitting layer 330 are, for example, the organic light-emitting layers of an organic light-emitting diode, and the stereoscopic data is written to form an imaging film with a fixed pattern, and the imaging film reconstructs a light field image through the optical imaging module 120. The switchable floating image display device 100 of this embodiment may not use a display with pixels and a variable screen, but instead use the selective light emission of at least one imaging film with a specific pattern to achieve the switching of floating images. The switchable floating image display device 100 of this embodiment may have the advantages of a simple structure and switchable floating images. In addition, the switchable floating image display device 100 of this embodiment may not require panel pixel-level process technology or a driving integrated circuit for driving pixels. In addition to being beneficial to cost reduction, the production of the imaging film is easier to be customized according to field requirements. In addition, without using a panel with pixels, the volume of the switchable floating image display device 100 of this embodiment can be smaller.

[0032] In this embodiment, the switchable floating image display device 100 may further include a substrate 140. When manufacturing the switchable floating image display device 100 of this embodiment, the light-emitting stack layer 200, the transparent barrier layer 110, and the light-emitting pattern stack layer 300 may be formed on the substrate 140 by, for example, photolithography. The transparent barrier layer 110 may concurrently have an air-blocking effect to prevent damage to the light-emitting stack layer 200 during the photolithography process of the light-emitting pattern stack layer 300. In addition, in this embodiment, the switchable floating image display device 100 may further include another transparent barrier layer 150 disposed between the light-emitting pattern stack layer 300 and the optical imaging module 120 to protect the light-emitting pattern stack layer 300. The material of the substrate 140 may be glass or other suitable materials.

[0033] Please refer again to Figure 1 and Figure 4 , the switchable floating image display device 100 of this embodiment may further include a housing 160. The housing 160 may enclose the light-emitting stack layer 200, the transparent barrier layer 110, and the light-emitting pattern stack layer 300, and cover the side surface of the optical imaging module 120. In addition, the housing 160 may have an opening 162 to expose one side (e.g., the upper surface) of the optical imaging module 120 to allow the first pattern light beam 202 and the second pattern light beam 302 to pass through. In this way, the first floating image 203 and the second floating image 303 may be formed outside the housing 160 or at the opening 162. The housing 160 may further include sensors, such as proximity sensors or distance sensors. As Figure 3A and Figure 3B shown, when the sensor senses that the user's finger 50 approaches and is located at the position of the first floating image 203, after the processor inside the switchable floating image display device 100 receives the signal from the sensor, it may command the power supply module 130 to switch from the state of making the light-emitting stack layer 200 emit light to generate the first floating image 203 (as Figure 3A shown) to the state of making the light-emitting pattern stack layer 300 emit light to generate the second floating image 303 (as Figure 3B shown), where the first floating image 203 is, for example, a relatively convex virtual button image that is not pressed, and the second floating image 303 is, for example, a relatively less convex virtual button image that is pressed. In this way, the user will visually feel that after the virtual button image is pressed by the finger, it changes from the state of not being pressed and being relatively convex (such as Figure 3A the first floating image 203) to the state of being pressed and being relatively less convex (such as Figure 3BThe second floating image 303). In this way, the switchable floating image display device 100 of this embodiment can achieve interaction between the floating image and the user. That is to say, the switchable floating image display device 100 of this embodiment can implement a non-contact interface technology. The user does not need to actually touch the object surface, which can avoid the residue of body fluids and thus break the indirect contact infection route.

[0034] In this embodiment, the power supply module 130 may include a combinational logic circuit, a gateway, a relay, a switch component, other electronic components or a combination thereof. Please refer to Figure 1 and Figure 5 , when the switchable floating image display device 100 switches to the state where the light-emitting stack layer 200 emits light, the first switch component 132 in the power supply module 130 is turned on, while the second switch component 134 is turned off, so that a voltage difference is applied between the first electrode 210 and the second electrode 220, but no voltage difference is applied between the third electrode 310 and the fourth electrode 320. At this time, the light-emitting stack layer 200 emits light to generate the first floating image, while the light-emitting pattern stack layer 300 does not emit light. When the switchable floating image display device 100 switches to the state where the light-emitting pattern stack layer 300 emits light, the first switch component 132 in the power supply module 130 is turned off, while the second switch component 134 is turned on, so that a voltage difference is applied between the third electrode 310 and the fourth electrode 320, but no voltage difference is applied between the first electrode 210 and the second electrode 220. At this time, the light-emitting pattern stack layer 300 emits light to generate the second floating image, while the light-emitting stack layer 200 does not emit light.

[0035] In this embodiment, the light-emitting stack layer 200 and the light-emitting pattern stack layer 300 are taken as an example to form two light-emitting patterns, but the present invention is not limited thereto. In other embodiments, the switchable floating image display device 100 may have two, three, four or more than five light-emitting pattern stack layers with different patterns, which are stacked with the light-emitting stack layer 200 to form three or more light-emitting patterns, so that three or more different floating images can be formed.

[0036] Figure 6 It is a schematic cross-sectional view of the detailed structure of the switchable floating image display device according to another embodiment of the present invention. Please refer to Figure 6 , the switchable floating image display device 100a of this embodiment and Figure 5Similar to the switchable floating image display device 100, in the light-emitting pattern stack layer 300a of this embodiment, the third electrode 310a is a transparent electrode, and the fourth electrode 320a is a mirror layer. The material of the third electrode 310a is, for example, indium tin oxide or other transparent conductive materials, and the material of the fourth electrode 320a is, for example, metal. The light-emitting layer 330a is disposed between the third electrode 310a and the fourth electrode 320a, and it is, for example, an organic light-emitting layer of an organic light-emitting diode that is coated over the entire surface without patterning. In this embodiment, the light-emitting pattern stack layer 300a further includes a patterned light-shielding layer 350 that covers a partial surface of the third electrode 310a, and the light emitted by the light-emitting layer 330a penetrates through the portion of the third electrode 310a that is not shielded by the patterned light-shielding layer 350 to form a second patterned light beam 302. In this embodiment, the light emitted upward from the light-emitting layer 330a is reflected downward by the fourth electrode 320a, and the light-emitting layer 330a also emits light downward. The light that is reflected downward and emitted downward, after penetrating through the portion of the third electrode 310a that is not shielded by the patterned light-shielding layer 350, becomes the second patterned light beam 302 that is transmitted downward. In this embodiment, the patterned light-shielding layer 350 is a patterned metal layer. However, in other embodiments, the patterned light-shielding layer 350 may also be a patterned insulating layer.

[0037] In this embodiment, the light-emitting stack layer 200 is disposed between the light-emitting pattern stack layer 300a and the optical imaging module 120, and the substrate 140 is, for example, a transparent substrate. After the second patterned light beam 302 that is transmitted downward penetrates through the transparent barrier layer 110, the light-emitting stack layer 200, the substrate 140, and the optical imaging module 120, a second floating image is formed below the optical imaging module 120. On the other hand, after the first patterned light beam 202 emitted by the first patterned light-emitting layer 230 penetrates through the first electrode 210, the substrate 140, and the optical imaging module 120, a first floating image is formed below the optical imaging module 120. In this embodiment, the first electrode 210 and the second electrode 220 may be transparent electrodes.

[0038] Figure 7 A cross-sectional schematic diagram of the detailed structure of a switchable floating image display device according to another embodiment of the present invention. Please refer to Figure 7 , the switchable floating image display device 100b of this embodiment and Figure 6The switchable floating image display device 100a is similar. In the light-emitting pattern stack layer 300b of this embodiment, a pattern definition layer 360 may be included to cover a partial surface of the third electrode 310b facing the light-emitting layer 330a. The pattern definition layer 360 is an insulating layer, which may be a transparent insulating layer or an opaque insulating layer. The third electrode 310b includes a patterned electrode portion 312 and a conductive portion 314. The pattern of the patterned electrode portion 312 may be defined by the pattern definition layer 360, that is, the pattern of the patterned electrode portion 312 and the pattern of the pattern definition layer 360 may be two complementary patterns, and the shape and configuration of the pattern definition layer 360 can be adjusted according to requirements. The patterned electrode portion 312 and the pattern definition layer 360 are disposed on the surface of the conductive portion 314 facing the light-emitting layer 330a.

[0039] The portion of the light-emitting layer 330a above the pattern definition layer 360 does not emit light due to the lack of a conducting current, and the remaining portion of the light-emitting layer 330a (i.e., the portion above the patterned electrode portion 312) emits a second patterned light beam 302 that penetrates the third electrode 310b because a voltage difference is applied between the third electrode 310b and the fourth electrode 320a and current conducts. The second patterned light beam 302 then penetrates the transparent barrier layer 110, the light-emitting stack layer 200, the substrate 140, and the optical imaging module 120, and a second floating image is formed below the optical imaging module 120. In this embodiment, the materials of the patterned electrode portion 312 and the conductive portion 314 are, for example, indium tin oxide or other transparent conductive materials.

[0040] In another embodiment, the light-emitting pattern stack layer 300b may include a patterned third electrode 310b (i.e., the patterned electrode portion 312). The portion of the light-emitting layer 330a corresponding to the above the patterned electrode portion 312 emits a second patterned light beam 302 that penetrates the patterned third electrode 310b because a voltage difference is applied between the patterned third electrode 310b and the fourth electrode 320a and current conducts, and after continuous penetration, a second floating image is formed below the optical imaging module 120.

[0041] Figure 8 It is a schematic cross-sectional view of the detailed structure of the switchable floating image display device according to still another embodiment of the present invention. Please refer to Figure 8 In this embodiment, the switchable floating image display device 100c is the same as Figure 5Similar to the switchable floating image display device 100, the switchable floating image display device 100c of this embodiment further includes a substrate 170, another transparent barrier layer 150, and an adhesive layer 180. The substrate 170 is disposed between the light-emitting pattern stack layer 300c and the optical imaging module 120, where the substrate 170 is, for example, a transparent substrate. The transparent barrier layer 150 is disposed between the light-emitting pattern stack layer 300c and the transparent barrier layer 110, where the transparent barrier layer 150 is, for example, a transparent insulating layer. The adhesive layer 180 adheres the transparent barrier layer 110 and the transparent barrier layer 150.

[0042] In this embodiment, the third electrode 310c is disposed between the fourth electrode 320c and the optical imaging module 120, and the second patterned light-emitting layer 330c is disposed between the third electrode 310c and the fourth electrode 320c. The second pattern defining layer 340c is disposed between the third electrode 310c and the fourth electrode 320c and is used to define the pattern of the second patterned light-emitting layer 330c. In addition, the transparent barrier layer 150 is disposed between the adhesive layer 180 and the fourth electrode 320c. In this embodiment, both the third electrode 310c and the fourth electrode 320c can be transparent electrodes, and their materials are, for example, indium tin oxide or other suitable transparent conductive materials. Therefore, the third electrode 310c and the fourth electrode 320c allow the first pattern light beam 202 and the second pattern light beam 302 to pass through.

[0043] When manufacturing the switchable floating image display device 100c, the light-emitting stack layer 200 and the light-emitting stack layer 300c can be respectively formed on the substrate 140 and the substrate 170 by a photolithography process, and the transparent barrier layer 110 and the transparent barrier layer 150 are respectively formed on the light-emitting stack layer 200 and the light-emitting stack layer 300c. Then, the light-emitting stack layer 300c together with the substrate 170 and the transparent barrier layer 150 is inverted above the light-emitting stack layer 200, and the transparent barrier layer 110 and the transparent barrier layer 150 are adhered by the adhesive layer 180. In this embodiment, the adhesive layer 180 can be a transparent adhesive layer, for example, an optical clear adhesive (OCA). Manufactured in this way, when manufacturing the light-emitting stack layer 300c by a photolithography process, it will not affect the light-emitting stack layer 200.

[0044] Figure 9 A cross-sectional schematic diagram of the detailed structure of a switchable floating image display device according to another embodiment of the present invention. Please refer to Figure 9 , the switchable floating image display device 100d of this embodiment and Figure 5The switchable floating image display device 100 is similar. In the light-emitting stack layer 200d of this embodiment, it may include a first electrode 210d, a second electrode 220, and a first light-emitting layer 230d, where the first light-emitting layer 230d is disposed between the first electrode 210d and the second electrode 220. In this embodiment, the first electrode 210d, the second electrode 220, and the first light-emitting layer 230d are all film layers that are distributed over the entire surface without being patterned, and they can be regarded as surface light sources.

[0045] The light-emitting pattern stack layer 300d includes a third electrode 310d, a pattern definition layer 360, a fourth electrode 320d, and a second light-emitting layer 330d. The third electrode 310d includes a transparent conductive layer 314d and a patterned metal electrode layer 312d, and the patterned metal electrode layer 312d is disposed on the transparent conductive layer 314d. The pattern definition layer 360 is disposed on the transparent conductive layer 314d and is used to define the pattern of the patterned metal electrode layer 312d. The pattern of the pattern definition layer 360 and the pattern of the patterned metal electrode layer 312d are, for example, two complementary patterns. The pattern definition layer 360 can be a transparent insulating layer. The light emitted by the first light-emitting layer 230d is blocked by the patterned metal electrode layer 312d and penetrates the pattern definition layer 360 to form a first pattern light beam 202. The second light-emitting layer 330d is disposed between the third electrode 310d and the fourth electrode 320d. Among them, the part of the second light-emitting layer 330d on the pattern definition layer 360 does not emit light due to the insulating effect of the pattern definition layer 360, and the part of the second light-emitting layer 330d on the patterned metal electrode layer 312d emits a second pattern light beam 302 due to the voltage difference between the patterned metal electrode layer 312d and the fourth electrode 320d.

[0046] In another embodiment, the light-emitting pattern stack layer 300d may include a patterned third electrode 310d (i.e., the patterned metal electrode layer 312d). The part of the light-emitting layer 330d corresponding to the upper part of the patterned metal electrode layer 312d emits a second pattern light beam 302 that penetrates the fourth electrode 320d when a voltage difference is applied between the patterned third electrode 310d and the fourth electrode 320d, and forms a second floating image after passing through the optical imaging module 120.

[0047] In this embodiment, the second light-emitting layer 330d is a film layer that is distributed over the entire surface without being patterned. However, only the portion above the patterned metal electrode layer 312d emits light to form a light-emitting pattern. On the other hand, the light emitted by the first light-emitting layer 230d sequentially passes through the transparent conductive layer 314d and the pattern definition layer 360 to form another light-emitting pattern. Therefore, the light-emitting pattern formed by the first light-emitting layer 230d and the light-emitting pattern formed by the second light-emitting layer 330d can be complementary patterns to each other. When the first pattern light beam 202 and the second pattern light beam 302 pass through the optical imaging module 120, complementary first floating images and second floating images are formed.

[0048] In the switchable floating image display device 100d of this embodiment, the first light-emitting layer 230d and the second light-emitting layer 330d do not need to be patterned, which is beneficial for simplifying the process and reducing the manufacturing cost.

[0049] Figure 10 It is a schematic cross-sectional view of the detailed structure of a switchable floating image display device according to another embodiment of the present invention. Please refer to Figure 10 , the switchable floating image display device 100e of this embodiment is similar to Figure 9 the switchable floating image display device 100d. In the light-emitting pattern stack layer 300e of this embodiment, it includes a transparent insulating layer 370 and a plurality of micro-light-emitting diodes 380 (micro-LED). These micro-light-emitting diodes 380 can be embedded in the transparent insulating layer 370, arranged in a pattern, and used to emit the second pattern light beam 302. That is to say, a semiconductor stack layer and a metal electrode of these micro-light-emitting diodes 380 are provided in the transparent insulating layer 370. On the other hand, the light emitted by the first light-emitting layer 230d is blocked by these micro-light-emitting diodes 380 (for example, blocked by the metal electrodes of the micro-light-emitting diodes 380), and penetrates the area in the transparent insulating layer 370 where there are no these micro-light-emitting diodes 380 to form the first pattern light beam 202. That is to say, the light-emitting pattern that emits the first pattern light beam 202 (i.e., corresponding to the area in the transparent insulating layer 370 where there are no these micro-light-emitting diodes 380) and the light-emitting pattern that emits the second pattern light beam 302 (i.e., the pattern arranged by the micro-light-emitting diodes 380) can be complementary. Therefore, the first floating image formed by the first pattern light beam 202 and the second floating image formed by the second pattern light beam 302 can also present two complementary images.

[0050] Figure 11 It is a schematic cross-sectional view of the detailed structure of a switchable floating image display device according to another embodiment of the present invention. Please refer to Figure 11 , the switchable floating image display device 100f of this embodiment is similar to Figure 10The switchable floating image display device 100f of this embodiment is similar to the switchable floating image display device 100e, and the switchable floating image display device 100f of this embodiment further includes a substrate 170 and an adhesive layer 180. The substrate 170 is disposed between the transparent barrier layer 110 and the light-emitting pattern stack layer 300e, and the adhesive layer 180 adheres the transparent barrier layer 110 and the substrate 170. In this embodiment, the light-emitting stack layer 200d and the light-emitting pattern stack layer 300e can be respectively formed on the substrate 140 and the substrate 170, and then the two are adhered through the adhesive layer 180.

[0051] Figure 12A FIG. is a schematic diagram showing the light-emitting state of the light-emitting stack layer of the switchable floating image display device according to another embodiment of the present invention, and Figure 12B is Figure 12A a schematic diagram showing the light-emitting state of the light-emitting pattern stack layer of the switchable floating image display device. Please refer to Figure 12A and Figure 12B The switchable floating image display device 100g of this embodiment is similar to Figure 1 , Figure 2A and Figure 2B the switchable floating image display device 100. In this embodiment, one of the first floating image 203g and the second floating image 303g can be a planar image, and the other of the first floating image 203g and the second floating image 303g is a stereoscopic image (in Figure 12A and Figure 12B the first floating image 203g is taken as an example of a stereoscopic image, and the second floating image 303g is taken as an example of a planar image). In Figure 12A , the light-emitting stack layer 200 can be designed to generate a light-emitting pattern 201, which can generate a three-dimensional first floating image 203g (light field imaging pattern) in cooperation with the optical imaging module 120. In Figure 12B , the light-emitting pattern stack layer 300 can be designed to generate a planar pattern (i.e., the light-emitting pattern 301), which can generate a planar second floating image 303g in cooperation with the optical imaging module 120. Therefore, the switchable floating image display device 100g of this embodiment can achieve the switching between a two-dimensional image (i.e., the second floating image 303g) and a three-dimensional image (the first floating image 203g).

[0052] Figure 13 FIG. is a cross-sectional schematic diagram of the switchable floating image display device according to another embodiment of the present invention. Please refer to Figure 13 The switchable floating image display device 100h of this embodiment is similar to Figure 5Similar to the switchable floating image display device 100, in the light-emitting stack layer 200h of this embodiment, a backlight 230h and a patterned light-shielding layer 240h may be included, and the patterned light-shielding layer 240h is disposed between the backlight 230h and the light-emitting pattern stack layer 300. The patterned light-shielding layer 240h allows part of the light emitted by the backlight 230h to pass through and shields another part of the light emitted by the backlight 230h to form a first patterned light beam 202, and the first patterned light beam 202 penetrates the light-emitting pattern stack layer 300 to form a first floating image.

[0053] In this embodiment, the light-emitting stack layer 200h may further include a transparent substrate 250h disposed between the backlight 230h and the patterned light-shielding layer 240h. The transparent substrate 250h allows the light emitted by the backlight 230h to pass through and reach the patterned light-shielding layer 240h. The patterned light-shielding layer 240h may be a patterned metal layer or a patterned non-metal shielding layer. The backlight 230h is a surface light source, which may include light-emitting diodes, flat panel lights, micro light-emitting diode arrays, or organic light-emitting diodes, etc. In addition, in other embodiments, more floating images may be formed by stacking two or more light-emitting pattern stack layers 300.

[0054] In summary, in the switchable floating image display device according to an embodiment of the present invention, the light-emitting stack layer and the light-emitting pattern stack layer are used to generate a first patterned light beam and a second patterned light beam respectively. The optical imaging module forms a first floating image with the first patterned light beam and a second floating image with the second patterned light beam, and the power supply module determines to generate a first floating image or a second floating image by switching the light-emitting stack layer or the light-emitting pattern stack layer to emit light. Therefore, the switchable floating image display device according to an embodiment of the present invention has the advantages of simple structure and switchable floating images.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A switchable floating image display device, characterized in that, Comprising: A light-emitting stack layer for generating a first patterned light beam; A light-emitting pattern stack layer for generating a second patterned light beam; A transparent barrier layer disposed between the light-emitting stack layer and the light-emitting pattern stack layer to block electrical communication between the light-emitting stack layer and the light-emitting pattern stack layer; An optical imaging module for reconstructing the traveling directions and intensities of the first patterned light beam and the second patterned light beam, such that the first patterned light beam forms a first floating image and the second patterned light beam forms a second floating image, and the first floating image and the second floating image are light field images, wherein the optical imaging module cooperates with the light-emitting stack layer to form the first floating image, and the optical imaging module cooperates with the light-emitting pattern stack layer to form the second floating image, and the optical imaging module is located between the second floating image and the light-emitting pattern stack layer; And A power supply module electrically connected to the light-emitting stack layer and the light-emitting pattern stack layer, and configured to determine whether to generate the first floating image or the second floating image by switching the light-emitting stack layer or the light-emitting pattern stack layer to emit light; Wherein, the light-emitting stack layer includes: A first electrode; A second electrode; and A first patterned light-emitting layer disposed between the first electrode and the second electrode and configured to form the first patterned light beam, The light-emitting pattern stack layer includes: A third electrode; A fourth electrode; and A second patterned light-emitting layer disposed between the third electrode and the fourth electrode and configured to form the second patterned light beam, wherein the second electrode, the third electrode, and the fourth electrode are transparent electrodes.

2. The switchable floating image display device according to claim 1, characterized in that, The light-emitting stack layer further includes a first pattern definition layer for defining the patterns of the first patterned light-emitting layer and the first electrode, and the light-emitting pattern stack layer further includes a second pattern definition layer disposed between the third electrode and the fourth electrode and configured to define the pattern of the second patterned light-emitting layer.

3. The switchable floating image display device according to claim 1, wherein, Further comprising: A first substrate, wherein the light-emitting stack layer is disposed on the first substrate; A second substrate disposed between the light-emitting pattern stack layer and the optical imaging module; Another transparent barrier layer disposed between the light-emitting pattern stack layer and the transparent barrier layer; And An adhesion layer for adhering the transparent barrier layer and the another transparent barrier layer.

4. The switchable floating image display device according to claim 1, wherein Further comprising: A first substrate, wherein the light-emitting stack layer is disposed on the first substrate; A second substrate disposed between the transparent barrier layer and the light-emitting pattern stack layer; And An adhesion layer for adhering the transparent barrier layer and the second substrate.

5. The switchable floating image display device according to claim 1, characterized in that, The light-emitting pattern stack layer is disposed between the light-emitting stack layer and the optical imaging module.

6. The switchable floating image display device according to claim 1, wherein, The light-emitting stack layer is disposed between the light-emitting pattern stack layer and the optical imaging module.

7. The switchable floating image display device according to claim 1, wherein, The optical imaging module includes a lens array, a grating, a photonic crystal, or an optical fiber.

8. The switchable floating image display device according to claim 1, characterized in that, The first floating image and the second floating image have different shapes, distribution ranges, colors, brightnesses, or combinations thereof.

9. The switchable floating image display device according to claim 1, characterized in that One of the first floating image and the second floating image is a planar image, and the other of the first floating image and the second floating image is a stereoscopic image.

10. The switchable floating image display device according to claim 1, characterized in that, The light-emitting stack layer includes: A backlight; and A patterned light-shielding layer disposed between the backlight and the light-emitting pattern stack layer, wherein the patterned light-shielding layer allows part of the light emitted by the backlight to pass through and shields another part of the light emitted by the backlight to form the first patterned light beam.

11. A switchable floating image display device, characterized in that, Comprising: A light-emitting stack layer for generating a first patterned light beam; A light-emitting pattern stack layer for generating a second patterned light beam; A transparent barrier layer disposed between the light-emitting stack layer and the light-emitting pattern stack layer to block electrical communication between the light-emitting stack layer and the light-emitting pattern stack layer; An optical imaging module for reconstructing the traveling directions and intensities of the first patterned light beam and the second patterned light beam, so that the first patterned light beam forms a first floating image and the second patterned light beam forms a second floating image, and the first floating image and the second floating image are light field images, wherein the optical imaging module cooperates with the light-emitting stack layer to form the first floating image, and the optical imaging module cooperates with the light-emitting pattern stack layer to form the second floating image, and the optical imaging module is located between the second floating image and the light-emitting pattern stack layer; And A power supply module electrically connected to the light-emitting stack layer and the light-emitting pattern stack layer, and configured to determine whether to generate the first floating image or the second floating image by switching the light-emitting stack layer or the light-emitting pattern stack layer to emit light, Wherein, the light-emitting stack layer includes: A first electrode; A second electrode; and A first patterned light-emitting layer disposed between the first electrode and the second electrode and configured to form the first patterned light beam, The light-emitting pattern stack layer includes: A third electrode, which is a transparent electrode; A fourth electrode, which is a mirror layer; A light-emitting layer disposed between the third electrode and the fourth electrode; and A patterned light-shielding layer covering a part of the surface of the third electrode, wherein the light emitted by the light-emitting layer passes through the part of the third electrode not shielded by the patterned light-shielding layer to form the second patterned light beam.

12. The switchable floating image display device according to claim 11, wherein The patterned light-shielding layer is a patterned metal layer.

13. A switchable floating image display device, characterized in that, Comprising: A light-emitting stack layer for generating a first patterned light beam; A light-emitting pattern stack layer for generating a second patterned light beam; A transparent barrier layer disposed between the light-emitting stack layer and the light-emitting pattern stack layer to block electrical communication between the light-emitting stack layer and the light-emitting pattern stack layer; An optical imaging module for reconstructing the traveling directions and intensities of the first patterned light beam and the second patterned light beam, such that the first patterned light beam forms a first floating image and the second patterned light beam forms a second floating image, and the first floating image and the second floating image are light field images. The optical imaging module cooperates with the light-emitting stack layer to form the first floating image, and the optical imaging module cooperates with the light-emitting pattern stack layer to form the second floating image. The optical imaging module is located between the second floating image and the light-emitting pattern stack layer; And A power supply module electrically connected to the light-emitting stack layer and the light-emitting pattern stack layer, and configured to determine the generation of the first floating image or the second floating image by switching the light-emitting stack layer or the light-emitting pattern stack layer to emit light. Wherein, the light-emitting stack layer includes: A first electrode; A second electrode; and A first patterned light-emitting layer disposed between the first electrode and the second electrode and configured to form the first patterned light beam. The light-emitting pattern stack layer includes: A third electrode, which is a transparent electrode; A fourth electrode, which is a mirror layer; A light-emitting layer disposed between the third electrode and the fourth electrode; and A pattern defining layer covering a partial surface of the third electrode facing the light-emitting layer. The pattern defining layer is an insulating layer, and the portion of the light-emitting layer above the pattern defining layer does not emit light, and the remaining portion of the light-emitting layer emits the second patterned light beam penetrating the third electrode.

14. A switchable floating image display device, characterized in that, Comprising: A light-emitting stack layer for generating a first patterned light beam; A light-emitting pattern stack layer for generating a second patterned light beam; A transparent barrier layer disposed between the light-emitting stack layer and the light-emitting pattern stack layer to block electrical communication between the light-emitting stack layer and the light-emitting pattern stack layer; An optical imaging module for reconstructing the traveling directions and intensities of the first patterned light beam and the second patterned light beam, such that the first patterned light beam forms a first floating image and the second patterned light beam forms a second floating image, and the first floating image and the second floating image are light field images. The optical imaging module cooperates with the light-emitting stack layer to form the first floating image, and the optical imaging module cooperates with the light-emitting pattern stack layer to form the second floating image. The optical imaging module is located between the second floating image and the light-emitting pattern stack layer; And A power supply module electrically connected to the light-emitting stack layer and the light-emitting pattern stack layer, and configured to determine the generation of the first floating image or the second floating image by switching the light-emitting stack layer or the light-emitting pattern stack layer to emit light. Wherein, the light-emitting stack layer includes: A first electrode; A second electrode; and A first light-emitting layer disposed between the first electrode and the second electrode. The light-emitting pattern stack layer includes: A third electrode, including: A transparent conductive layer; and A patterned metal electrode layer disposed on the transparent conductive layer. A pattern definition layer, disposed on the transparent conductive layer and used to define the pattern of the patterned metal electrode layer, wherein the pattern definition layer is a transparent insulating layer, and the light emitted by the first light-emitting layer is blocked by the patterned metal electrode layer and penetrates the pattern definition layer to form the first pattern light beam; A fourth electrode; and A second light-emitting layer, disposed between the third electrode and the fourth electrode, wherein the portion of the second light-emitting layer on the pattern definition layer does not emit light, and the portion of the second light-emitting layer on the patterned metal electrode layer emits the second pattern light beam.

15. A switchable floating image display device, characterized in that, Comprising: A light-emitting stack layer for generating a first pattern light beam; A light-emitting pattern stack layer for generating a second pattern light beam; A transparent barrier layer, disposed between the light-emitting stack layer and the light-emitting pattern stack layer to block electrical communication between the light-emitting stack layer and the light-emitting pattern stack layer; An optical imaging module for reconstructing the traveling directions and intensities of the first pattern light beam and the second pattern light beam, enabling the first pattern light beam to form a first floating image and the second pattern light beam to form a second floating image, and the first floating image and the second floating image being light field images, wherein the optical imaging module cooperates with the light-emitting stack layer to form the first floating image, and the optical imaging module cooperates with the light-emitting pattern stack layer to form the second floating image, and the optical imaging module is located between the second floating image and the light-emitting pattern stack layer; And A power supply module, electrically connected to the light-emitting stack layer and the light-emitting pattern stack layer, and used to determine whether to generate the first floating image or the second floating image by switching the light-emitting stack layer or the light-emitting pattern stack layer to emit light, Wherein, the light-emitting stack layer includes: A first electrode; A second electrode; and A light-emitting layer, disposed between the first electrode and the second electrode, The light-emitting pattern stack layer includes: A transparent insulating layer; and A plurality of micro light-emitting diodes, embedded in the transparent insulating layer, arranged in a pattern, and used to emit the second pattern light beam, wherein the light emitted by the light-emitting layer is blocked by the micro light-emitting diodes and penetrates the area of the transparent insulating layer without the micro light-emitting diodes to form the first pattern light beam.

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