TW202243302A - Switchable floating image display device - Google Patents

Abstract

A switchable floating image display device including a light-emitting stack layer, a light-emitting pattern stack layer, a transparent blocking layer, an optical imaging module, and a power supply module is provided. The light-emitting stack layer is configured to generate a first pattern beam. The light-emitting pattern stack layer is configured to generate a second pattern beam. The transparent blocking layer is disposed between the light-emitting stack layer and the light-emitting pattern stack layer. The optical imaging module is configured to make the first pattern beam form a first floating image, and make the second pattern beam form a second floating image. The power supply module is electrically connected to the light-emitting stack layer and the light-emitting pattern stack layer, and configured to switch the light-emitting stack layer or the light-emitting pattern stack layer to emit light, so as to determine the first floating image or the second floating image to be formed.

Description

Switchable floating image display device

The present invention relates to a display device, and in particular to a switchable floating image display device.

As the COVID-19 epidemic spreads around the world, non-contact technology has become more important, which can effectively prevent the risk of virus contact infection in public utensils. With the non-contact interface technology, the user does not need to touch the surface of the object, which can avoid residual body fluids and destroy the way of indirect contact infection.

For example, if a floating image button is made to replace the traditional physical button, the public can operate normally when taking an elevator, opening and closing a door, or pressing a bell without causing contact infection.

The traditional switchable stereoscopic image design uses a monitor to display different images to achieve the effect of image switching. However, the cost of the display is high and the design is relatively complicated, which makes it difficult to integrate into a low-cost or small-volume device such as a floating video button.

The invention provides a switchable floating image display device, which has the advantages of simple structure and switchable floating image.

An embodiment of the present invention provides a switchable floating image display device, which includes a light-emitting stacked layer, a light-emitting pattern stacked layer, a transparent barrier layer, an optical imaging module, and a power supply module. The light emitting stacked layer is used to generate the first pattern beam, and the light emitting pattern stacked layer is used to generate the second pattern light beam. The transparent blocking layer is disposed between the light emitting stack layer and the light emitting pattern stack layer to block the electrical communication between the light emitting stack layer and the light emitting pattern stack layer. The optical imaging module is used to make the first pattern light beam form a first floating image, and to make the second pattern light beam form a second floating image. The power supply module is electrically connected to the light-emitting stacked layer and the light-emitting pattern stacked layer, and is used to determine to generate the first floating image or the second floating image by switching the light-emitting stacked layer or the light-emitting pattern stacked layer to emit light.

In the switchable floating image display device according to an embodiment of the present invention, the light-emitting stacked layer and the light-emitting pattern stacked layer can be used to generate the first pattern beam and the second pattern beam respectively, and the optical imaging module forms the first pattern beam The first floating image, and make the second pattern light beam form the second floating image, and the power supply module determines 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 . Therefore, the switchable floating image display device according to an embodiment of the present invention can have the advantages of simple structure and switchable floating image.

FIG. 1 is a schematic diagram of a switchable floating image display device according to an embodiment of the present invention. FIG. 2A is a schematic diagram of the light-emitting stacked layer in FIG. 1 when it emits light. FIG. 2B is a schematic diagram of the light-emitting pattern stacked layer in FIG. A brief schematic diagram, FIG. 3A is a schematic diagram of the first floating image and the user's finger provided when the light-emitting stack layer emits light, and FIG. 3B is a schematic diagram of the second floating image and the user's finger provided when the light-emitting pattern stack layer emits light. 4 is a three-dimensional schematic diagram illustrating a possible appearance of the switchable floating image display device in FIG. 1 and one of the floating images formed therein. Referring to FIG. 1 to FIG. 4 , the switchable floating 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 stacked light emitting layer 200 is used to generate the first pattern beam 202 , and the stacked light emitting layer 300 is used to generate the second pattern beam 302 . In this embodiment, the light-emitting stacked layer 200 can produce a light-emitting pattern 201 as shown in FIG. 2A, and the light-emitting stacked layer 300 can produce a light-emitting pattern 301 as shown in FIG. 2B. The light-emitting patterns 201 and 301 in FIGS. 2A and 2B are only schematically It shows that, 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, can be various regular or irregular light emitting patterns.

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 communication between the light-emitting stack layer 200 and the light-emitting pattern stack layer 300, wherein the transparent barrier layer 110 is, for example, a transparent insulating layer, which The material can be silicon oxide, silicon nitride, epoxy resin, silicone or other suitable insulating materials. The optical imaging module 120 is used to make the first pattern beam 202 form a first floating image (such as the first floating image 203 shown in FIG. 3A ), and to make the second pattern beam 302 form a second floating image. (For example, the second floating image 303 shown in FIG. 3B ). In this embodiment, the optical imaging module 120 is, for example, a lens array, which may have a plurality of microlenses 122 arranged in a two-dimensional array, so that the first pattern beam 202 and the second pattern beam 302 form a first floating image and the second floating image, wherein 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 direction and intensity of the first patterned light beam 202 and the second patterned 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 the real object, when the light is transmitted to the user's eyes, the user will feel that there is a three-dimensional floating image in the space that simulates the three-dimensional real object (that is, the first floating image and second floating image). The light emitting pattern 201 generated by the light emitting stack layer 200 and the light emitting pattern 301 generated by the light emitting stack layer 300 are matched with the optical imaging module 120, and the first pattern light beam 202 and the second pattern are reconstructed by the optical imaging module 120 The light beam 302 is used to form the expected light field image. The light-emitting patterns 201 and 301 in FIG. 2A and FIG. 2B are only schematic diagrams. In fact, when it is desired to form a light field image as shown in FIG. 3A and FIG. 3B (ie, the first floating image 203 and the second floating image 303), optical imaging The light emitting patterns 201 and 301 corresponding to the module 120 are more complicated than those shown in FIG. 2A and FIG. 2B . However, in order to simplify the drawings to facilitate understanding, the light-emitting patterns of the light-emitting stacked layer 200 and the light-emitting pattern stacked layer 300 in the following embodiments are drawn in a simplified way, but the actual application will be more complicated and related to optical imaging. The pattern that the module 120 matches. In this embodiment, the first floating image 203 and the second floating image 303 are, for example, stereoscopic images. However, in other embodiments, the first floating image 203 and/or the second floating image 303 may also be planar images.

In addition to the optical imaging module 120 being a lens array, in other embodiments, the optical imaging module 120 may include gratings, photonic crystals or optical fibers, etc. These optical elements can also achieve the reconstruction of the first pattern beam 202 and the second pattern beam 302's direction of travel and the effect of intensity to form a light field image.

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 whether to generate the first floating image or the second floating image by switching the light-emitting stack layer 200 or the light-emitting pattern stack layer 300 to emit light. image. The first floating image and the second floating image may have different shapes, distribution ranges, colors, brightness or combinations thereof.

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

In this embodiment, the light emitting stack 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 stacked layer 300 may further include a second pattern-defining layer 340 , for example, disposed between the third electrode 310 and the fourth electrode 320 to define the pattern of the second patterned light-emitting layer 330 . The pattern of the first pattern definition layer 240 and the pattern of the first patterned light emitting layer 230 and the first electrode 210 can 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 can be, for example, are two complementary patterns. The second pattern-defining layer 340 may be formed of a transparent insulating material, which facilitates the passage of the first pattern light beam 202 . 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 can be attached on the light-emitting pattern stack layer 300 , or formed thereon by a lithography process.

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 organic light-emitting diodes, and the three-dimensional images are written to form an imaging sheet with a fixed pattern. The light field image is reconstructed by the optical imaging module 120 . The switchable floating image display device 100 of this embodiment may not use a display with pixels and a changeable screen, but uses selective light emission of at least one imaging sheet with a specific pattern to achieve switching of floating images. The example switchable floating image display device 100 has the advantages of simple structure and switchable floating image. In addition, the switchable floating image display device 100 of this embodiment does not need panel pixel-level process technology, and does not need driving integrated circuits for driving pixels. In addition to reducing costs, the production of imaging sheets is easier. Customized according to field needs. In addition, there is no need to use a panel with pixels, and the volume of the switchable floating image display device 100 of this embodiment can be smaller.

In this embodiment, the switchable floating image display device 100 may further include a substrate 140, and in making the switchable floating image display device 100 of this embodiment, the light-emitting stacked layer 200, the transparent barrier layer 110 and the light-emitting pattern The stacked layer 300 can be formed on the substrate 140 by using, for example, a lithography process. The transparent barrier layer 110 can also function as a gas barrier, so as to avoid damage to the light emitting stack layer 200 during the lithography 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 can be glass or other suitable materials.

Please refer to FIG. 1 and FIG. 4 again, the switchable floating image display device 100 of this embodiment may further include a casing 160, and the casing 160 may cover the light emitting stack layer 200, the transparent barrier layer 110 and the light emitting pattern stack layer 300, and Cover the side of the optical imaging module 120 . In addition, the housing 160 may have an opening 162 exposing one side (eg, the upper surface) of the optical imaging module 120 to allow the first pattern beam 202 and the second pattern beam 302 to pass through. In this way, the first floating image 203 and the second floating image 303 can be formed outside the casing 160 , or formed at the opening 162 . The housing 160 may further include a sensor, such as a proximity sensor or a distance sensor. As shown in FIG. 3A and FIG. 3B , when the sensor detects that the user's finger 50 approaches and is located at the position of the first floating image 203, the processor inside the switchable floating image display device 100 receives After receiving the signal from the sensor, the power supply module 130 can be commanded to switch from the state where the light-emitting stacked layer 200 emits light to generate the first floating image 203 (as shown in FIG. 3A ) to the state where the light-emitting pattern stacked layer 300 emits light to generate The state of the second floating image 303 (as shown in FIG. 3B ), wherein the first floating image 203 is, for example, a more prominent virtual button image that has not been pressed, and the second floating image 303 is, for example, pressed Less protruding virtual button images. In this way, the user will visually feel that after the virtual button image is pressed by the finger, it will switch from the unpressed and more protruding state (as shown in the first floating image 203 in FIG. 3A ) to the pressed and less prominent state. Protruding state (as shown in the second floating image 303 in FIG. 3B ). In this way, the switchable floating image display device 100 of this embodiment can achieve the interaction between the floating image and the user. That is to say, the switchable floating image display device 100 of this embodiment can realize the non-contact interface technology, and the user does not need to actually touch the surface of the object, so as to avoid the residual body fluid, thereby destroying the infection route of indirect contact.

In this embodiment, the power supply module 130 may include a combination logic circuit, a gate, a relay, a switch element, other electronic components or a combination thereof. Please refer to FIG. 1 and FIG. 5 again. When the switchable floating image display device 100 switches to the state where the light-emitting stack layer 200 emits light, the first switching element 132 in the power supply module 130 is turned on, and the second switching element 134 disconnected, so that the 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 stacked layer 200 emits light to generate the first A floating image, but the luminous pattern stacked layer 300 does not emit light. When the switchable floating image display device 100 is switched to the state where the luminous pattern stack layer 300 emits light, the first switching element 132 in the power supply module 130 is turned off, and the second switching element 134 is turned on, so that the 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 a second floating image, and emits light. The stacked layer 200 does not emit light.

In this embodiment, it is taken as an example that the light-emitting stacked layer 200 and the light-emitting pattern stacked layer 300 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 2, 3, 4 or more than 5 stacked layers of luminous patterns with different patterns, which are stacked together with the luminous stacked layer 200 to form More than three luminous patterns can form more than three different floating images.

FIG. 6 is a schematic cross-sectional view of a detailed structure of a switchable floating image display device according to another embodiment of the present invention. Please refer to FIG. 6, the switchable floating image display device 100a of this embodiment is similar to the switchable floating image display device 100 of FIG. is a transparent electrode, and the fourth electrode 320a is a mirror layer. The material of the third electrode 310 a is, for example, indium tin oxide or other transparent conductive materials, and the material of the fourth electrode 320 a is, for example, metal. The light-emitting layer 330a is disposed between the third electrode 310a and the fourth electrode 320a, and is, for example, an organic light-emitting layer of an organic light-emitting diode that is fully coated without patterning. In this embodiment, the light-emitting pattern stacked layer 300a further includes a patterned light-shielding layer 350 covering part of the surface of the third electrode 310a, wherein the light emitted by the light-emitting layer 330a passes through the third electrode 310a and is not blocked by the patterned light-shielding layer 350 The shaded part forms the second pattern beam 302 . In this embodiment, the light emitted upward from the light-emitting layer 330a will be reflected downward by the fourth electrode 320a, and the light-emitting layer 330a will also emit light downward, and the light reflected and emitted downward is penetrating The part of the third electrode 310a not covered by the patterned light-shielding layer 350 becomes the second patterned light beam 302 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.

In this embodiment, the light-emitting stacked layer 200 is disposed between the light-emitting pattern stacked layer 300 a and the optical imaging module 120 , and the substrate 140 is, for example, a transparent substrate. The second pattern light beam 302 passing downwards passes through the transparent barrier layer 110 , the light emitting stack layer 200 , the substrate 140 and the optical imaging module 120 , and forms a second floating image under the optical imaging module 120 . On the other hand, the first pattern light beam 202 emitted by the first patterned luminous layer 230 passes through the first electrode 210 , the substrate 140 and the optical imaging module 120 to form a first floating image under the optical imaging module 120 . In this embodiment, the first electrode 210 and the second electrode 220 may be transparent electrodes.

7 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 FIG. 7, the switchable floating image display device 100b of this embodiment is similar to the switchable floating image display device 100a of FIG. , covering part of the surface of the third electrode 310b facing the light-emitting layer 330a, wherein the pattern definition layer 360 is an insulating layer, which can 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 can 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 can be two Complementary patterns, wherein the shape and configuration of the pattern defining 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.

The part of the light-emitting layer 330a above the pattern-defining layer 360 does not emit light due to the lack of conducting current, and the rest of the light-emitting layer 330a (ie, the part above the patterned electrode part 312) is due to the gap between the third electrode 310b and the fourth electrode 320a. When a voltage difference is applied between them, a current is conducted, and a second pattern beam 302 is emitted penetrating the third electrode 310b. The second pattern light beam 302 then passes through the transparent barrier layer 110 , the light emitting stack layer 200 , the substrate 140 and the optical imaging module 120 to form a second floating image under the optical imaging module 120 . In this embodiment, the material of the patterned electrode portion 312 and the conductive portion 314 is, for example, indium tin oxide or other transparent conductive materials.

In another embodiment, the light-emitting pattern stacked layer 300b may include a patterned third electrode 310b (ie, a patterned electrode portion 312), and the part of the light-emitting layer 330a corresponding to the patterned electrode portion 312 is located between the patterned third electrode 310b and the patterned electrode portion 312. When a voltage difference is applied between the fourth electrodes 320a, there is a current conduction, and the second patterned light beam 302 that penetrates the patterned third electrode 310b is emitted, and the second light beam 302 is formed under the optical imaging module 120 after continuous penetration. empty image.

FIG. 8 is a schematic cross-sectional view of a detailed structure of a switchable floating image display device according to another embodiment of the present invention. Please refer to FIG. 8, the switchable floating image display device 100c of this embodiment is similar to the switchable floating image display device 100 of FIG. 5, and the switchable floating image display device 100c of this embodiment further includes a The substrate 170 , another transparent barrier layer 150 and a bonding layer 180 . The substrate 170 is disposed between the light-emitting pattern stacking layer 300c and the optical imaging module 120, wherein the substrate 170 is, for example, a transparent substrate. The transparent barrier layer 150 is disposed between the light-emitting pattern stacking layer 300c and the transparent barrier layer 110, wherein the transparent barrier layer 150 is, for example, a transparent insulating layer. The bonding layer 180 is bonding the transparent barrier layer 110 and the transparent barrier layer 150 .

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 definition 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 bonding layer 180 and the fourth electrode 320c. In this embodiment, both the third electrode 310c and the fourth electrode 320c can be transparent electrodes made of, for example, indium tin oxide or other suitable transparent conductive materials. Therefore, the third electrode 310c and the fourth electrode 320c can allow the first pattern beam 202 and the second pattern beam 302 to pass through.

When fabricating the switchable floating image display device 100c, the light-emitting stacked layer 200 and the light-emitting stacked layer 300c can be formed on the substrate 140 and the substrate 170 respectively by a lithography process, and respectively on the light-emitting stacked layer 200 and the light-emitting stacked layer 300c A transparent barrier layer 110 and a transparent barrier layer 150 are formed. Next, the light-emitting stacked layer 300 c together with the substrate 170 and the transparent barrier layer 150 is placed upside down on the light-emitting stacked layer 200 , and the transparent barrier layer 110 and the transparent barrier layer 150 are pasted together by the bonding layer 180 . In this embodiment, the bonding layer 180 may be a transparent adhesive layer, such as optical clear adhesive (OCA). According to this method, when the light-emitting stack layer 300c is fabricated by the lithography process, the light-emitting stack layer 200 will not be affected.

FIG. 9 is a schematic cross-sectional view of a detailed structure of a switchable floating image display device according to another embodiment of the present invention. Please refer to FIG. 9, the switchable floating image display device 100d of this embodiment is similar to the switchable floating image display device 100 of FIG. The second electrode 220 and the first light emitting layer 230d, wherein 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 distributed over the entire surface without patterned film layers, which can be regarded as a surface light source.

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 shielded by the patterned metal electrode layer 312d and passes through the pattern definition layer 360 to form the first pattern light beam 202 . The second light emitting layer 330d is disposed between the third electrode 310d and the fourth electrode 320d, wherein 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 second light emitting layer The portion 330d on the patterned metal electrode layer 312d emits the second patterned light beam 302 due to the voltage difference between the patterned metal electrode layer 312d and the fourth electrode 320d.

In another embodiment, the light-emitting pattern stack layer 300d may include a patterned third electrode 310d (ie, a patterned metal electrode layer 312d), and the part of the light-emitting layer 330d corresponding to the patterned metal electrode layer 312d is due to the patterned third electrode layer 310d. When a voltage difference is applied between 310d and the fourth electrode 320d, there is a current conduction, and the second pattern beam 302 penetrating the fourth electrode 320d is emitted, and the second floating image is formed after penetrating the optical imaging module 120 .

In this embodiment, the second light-emitting layer 330d is a film layer distributed over the entire surface without patterning, but only the part 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 passes through the transparent conductive layer 314d and the pattern definition layer 360 in sequence 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 will be formed.

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 to simplify the manufacturing process and reduce the manufacturing cost.

FIG. 10 is a schematic cross-sectional view of a detailed structure of a switchable floating image display device according to another embodiment of the present invention. Please refer to FIG. 10, the switchable floating image display device 100e of this embodiment is similar to the switchable floating image display device 100d of FIG. 370 and a plurality of micro-light-emitting diodes 380 (micro-light-emitting diode, 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, the semiconductor stacked layers and metal electrodes of these micro light emitting diodes 380 are disposed 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 through the transparent insulating layer 370 without these micro-luminescence. area of the diode 380 to form the first pattern beam 202 . That is to say, the light emitting pattern emitting the first pattern light beam 202 (that is, corresponding to the area without these micro light emitting diodes 380 in the transparent insulating layer 370) is different from the light emitting pattern emitting the second pattern light beam 302 (that is, the micro light emitting diodes 380 The arranged patterns) can be complementary, so the first floating image formed by the first patterned light beam 202 and the second floating image formed by the second patterned light beam 302 can also present two complementary images.

FIG. 11 is a schematic cross-sectional view of a detailed structure of a switchable floating image display device according to another embodiment of the present invention. Please refer to FIG. 11, the switchable floating image display device 100f of this embodiment is similar to the switchable floating image display device 100e of FIG. 10, and the switchable floating image display device 100f of this embodiment further includes a substrate 170 and a bonding layer 180 , the substrate 170 is disposed between the transparent barrier layer 110 and the light-emitting pattern stacking layer 300 e , and the bonding layer 180 bonds the transparent barrier layer 110 and the substrate 170 . In this embodiment, the light-emitting stacked layer 200d and the light-emitting pattern stacked layer 300e can be formed on the substrate 140 and the substrate 170 respectively, and then bonded between the two through the bonding layer 180 .

Fig. 12A is a schematic diagram of the light-emitting stacked layer of the switchable floating image display device according to another embodiment of the present invention, and Fig. 12B is a light-emitting pattern stacked layer of the switchable floating image display device in Fig. 12A. A brief schematic diagram of the time. Please refer to Fig. 12A and Fig. 12B, the switchable floating image display device 100g of this embodiment is similar to the switchable floating image display device 100 shown in Fig. 1, Fig. 2A and Fig. 2B, and in the first One of the 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 FIGS. The floating image 203g is a stereoscopic image, and the second floating image 303g is a planar image, for example). In FIG. 12A , the light-emitting stacked layer 200 can be designed to generate a light-emitting pattern 201 , which can produce a three-dimensional first floating image 203g (light-field imaging pattern) in conjunction with the optical imaging module 120 . In FIG. 12B , the luminous pattern stack layer 300 can be designed to generate a planar pattern (ie, the luminous pattern 301 ), which can be used with the optical imaging module 120 to generate a planar second floating image 303g. Therefore, the switchable floating image display device 100g of this embodiment can switch between a 2D image (ie, the second floating image 303g ) and a 3D image (the first floating image 203g ).

13 is a schematic cross-sectional view of a switchable floating image display device according to another embodiment of the present invention. Please refer to FIG. 13, the switchable floating image display device 100h of this embodiment is similar to the switchable floating image display device 100 of FIG. The patterned light-shielding layer 240h is disposed between the backlight source 230h and the light-emitting pattern stacked layer 300 . The patterned light-shielding layer 240h allows part of the light emitted by the backlight source 230h to pass through, and shields another part of the light emitted by the backlight source 230h to form the 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.

In this embodiment, the light-emitting stacked 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 can be a patterned metal layer or a patterned non-metallic shielding layer. The backlight source 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. In addition, in other embodiments, more floating images can also be formed by stacking more than two light emitting pattern stack layers 300 .

To sum up, in the switchable floating image display device according to an embodiment of the present invention, the light-emitting stacked layer and the light-emitting pattern stacked layer are used to generate the first patterned light beam and the second patterned light beam respectively, and the optical imaging module makes the second patterned light beam A patterned light beam forms a first floating image, and a second patterned light beam forms a second floating image, and the power supply module decides to generate the first floating image or the second floating image by switching the light-emitting stacked layer or the light-emitting pattern stacked layer to emit light. Two floating images. Therefore, the switchable floating image display device according to an embodiment of the present invention can have the advantages of simple structure and switchable floating image.

50: finger 100, 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h: switchable floating image display device 110, 150: transparent barrier layer 120:Optical imaging module 122: micro lens 130: Power supply module 132: the first switching element 134: the second switching element 140, 170: Substrate 160: Shell 162: opening 180: Bonding layer 200, 200d, 200h: light-emitting stacked layers 201, 301: Luminous patterns 202: The first pattern beam 203, 203g: The first floating image 210, 210d: first electrode 220: second electrode 230: the first patterned light-emitting layer 230d: the first light-emitting layer 230h: Backlight 240: the first pattern definition layer 240h: Patterned shading layer 250h: Transparent substrate 300, 300a, 300b, 300c, 300d, 300e: stacked layers of light emitting patterns 302: The second pattern beam 303, 303g: The second floating image 310, 310a, 310b, 310c, 310d: third electrode 312: patterned electrode part 312d: patterned metal electrode layer 314: conductive part 314d: transparent conductive layer 320, 320a, 320c, 320d: fourth electrode 330, 330c: the second patterned light-emitting layer 330a: light emitting layer 330d: the second light-emitting layer 340, 340c: second pattern definition layer 350: Patterned light-shielding layer 360: Pattern definition layer 370: transparent insulating layer 380: micro light emitting diode

FIG. 1 is a schematic diagram of a switchable floating image display device according to an embodiment of the present invention. FIG. 2A is a schematic diagram of the light emitting stack in FIG. 1 when emitting light. FIG. 2B is a schematic diagram of the light-emitting pattern stacked layer in FIG. 1 emitting light. FIG. 3A is a schematic diagram of a first floating image and a user's finger provided when the light-emitting stack layer emits light. 3B is a schematic diagram of the second floating image and the user's finger provided when the stacked layer of the luminous pattern emits light. FIG. 4 is a three-dimensional schematic diagram illustrating a possible appearance of the switchable floating image display device in FIG. 1 and one of the floating images formed therein. FIG. 5 is a schematic cross-sectional view of the detailed structure of the switchable floating image display device in FIG. 1 . FIG. 6 is a schematic cross-sectional view of a detailed structure of a switchable floating image display device according to another embodiment of the present invention. 7 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. FIG. 8 is a schematic cross-sectional view of a detailed structure of a switchable floating image display device according to another embodiment of the present invention. FIG. 9 is a schematic cross-sectional view of a detailed structure of a switchable floating image display device according to another embodiment of the present invention. FIG. 10 is a schematic cross-sectional view of a detailed structure of a switchable floating image display device according to another embodiment of the present invention. FIG. 11 is a schematic cross-sectional view of a detailed structure of a switchable floating image display device according to another embodiment of the present invention. 12A is a schematic diagram of the light-emitting stacked layers of the switchable floating image display device according to another embodiment of the present invention when they emit light. FIG. 12B is a schematic diagram of the switchable floating image display device in FIG. 12A when the stacked layers of the light emitting patterns emit light. FIG. 13 is a schematic cross-sectional view of a switchable floating image display device according to another embodiment of the present invention.

100: Switchable floating image display device

110: transparent barrier layer

120:Optical imaging module

122: micro lens

130: Power supply module

132: the first switching element

134: the second switching element

200: Luminous Stacked Layers

202: The first pattern beam

300: Luminous Pattern Stack Layer

302: The second pattern beam

Claims (16)

A switchable floating image display device, comprising: a light emitting stacked layer for generating a first pattern light beam; A light-emitting pattern stacking layer, used to generate a second pattern light beam; A transparent barrier layer, configured between the light-emitting stack layer and the light-emitting pattern stack layer, to block the electrical communication between the light-emitting stack layer and the light-emitting pattern stack layer; An optical imaging module, used to form a first floating image with the first patterned light beam, and to form a second floating image with the second patterned light beam; 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 light-emitting pattern stack layer by switching the light-emitting stack layer or the light-emitting pattern stack layer to emit light Two floating images. The switchable floating image display device as described in Claim 1, wherein the luminescent stacked layer comprises: a first electrode; a second electrode; and a first patterned light-emitting layer, arranged between the first electrode and the second electrode, and used to form the first patterned light beam, The luminous pattern stack layer includes: a third electrode; a fourth electrode; and A second patterned light-emitting layer, arranged between the third electrode and the fourth electrode, and used to form the second pattern light beam, wherein the second electrode, the third electrode and the fourth electrode are transparent electrodes . The switchable floating image display device as described in Claim 2, wherein the light-emitting stacked layer further includes a first pattern definition layer for defining the pattern of the first patterned light-emitting layer and the first electrode, and The light-emitting pattern stacking layer further includes a second pattern-defining layer, disposed between the third electrode and the fourth electrode, and used to define the pattern of the second patterned light-emitting layer. The switchable floating image display device as described in Claim 1, wherein the luminescent stacked layer comprises: a first electrode; a second electrode; and a first patterned light-emitting layer, arranged between the first electrode and the second electrode, and used to form the first patterned light beam, The luminous 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 covers part of the surface of the third electrode, wherein the light emitted by the light-emitting layer penetrates the part of the third electrode not shielded by the patterned light-shielding layer to form the second pattern light beam. The switchable floating image display device as claimed in claim 4, wherein the patterned light-shielding layer is a patterned metal layer. The switchable floating image display device as described in Claim 1, wherein the luminescent stacked layer comprises: a first electrode; a second electrode; and a first patterned light-emitting layer, arranged between the first electrode and the second electrode, and used to form the first patterned light beam, The luminous 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 part of the surface of the third electrode facing the light-emitting layer, wherein the pattern-defining layer is an insulating layer, the part of the light-emitting layer above the pattern-defining layer does not emit light, and the rest of the light-emitting layer The second pattern light beam is emitted through the third electrode. The switchable floating image display device as described in claim 1 further includes: A first substrate, wherein the light emitting stack layer is configured on the first substrate; A second substrate, configured between the light-emitting pattern stack layer and the optical imaging module; another transparent barrier layer configured between the luminescent pattern stack layer and the transparent barrier layer; and A laminating layer, laminating the transparent barrier layer and the other transparent barrier layer. The switchable floating image display device as described in Claim 1, wherein the luminescent stacked layer comprises: a first electrode; a second electrode; and a first light-emitting layer disposed between the first electrode and the second electrode, The luminous pattern stack layer includes: a third electrode, comprising: a transparent conductive layer; and a patterned metal electrode layer configured on the transparent conductive layer; A pattern definition layer, configured 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, the light emitted by the first light emitting layer is received by the pattern shielding the metal electrode layer, and penetrating 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 part of the second light emitting layer on the pattern definition layer does not emit light, and the second light emitting layer is on the patterned metal electrode layer The upper portion emits the second pattern light beam. The switchable floating image display device as described in Claim 1, wherein the luminescent stacked layer comprises: a first electrode; a second electrode; and a light-emitting layer disposed between the first electrode and the second electrode, The luminous pattern stack layer includes: a transparent insulating layer; and A plurality of micro light emitting diodes are 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 passes through penetrating through the region without the micro light emitting diodes in the transparent insulating layer to form the first pattern light beam. The switchable floating image display device as described in claim 1 further includes: A first substrate, wherein the light emitting stack layer is configured on the first substrate; a second substrate configured between the transparent barrier layer and the light emitting pattern stack layer; and A bonding layer, bonding the transparent barrier layer and the second substrate. The switchable floating image display device according to claim 1, wherein the stacked layer of light emitting patterns is disposed between the stacked layer of light emitting patterns and the optical imaging module. 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. 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. The switchable floating image display device according to claim 1, wherein the first floating image and the second floating image have different shapes, distribution ranges, colors, brightness or combinations thereof. The switchable floating image display device as described in claim 1, wherein one of the first floating image and the second floating image is a planar image, and the first floating image and the second floating image The other is stereoscopic images. The switchable floating image display device as described in Claim 1, wherein the luminescent stacked layer comprises: a backlight; and a patterned light-shielding layer disposed between the backlight source and the light-emitting pattern stack layer, wherein the patterned light-shielding layer allows part of the light emitted by the backlight source to pass through and shields another part of the light emitted by the backlight source, to form the first pattern beam.

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