Light emitting diode display

Abstract

A light emitting diode display includes a light transmissive display panel, a switching optical mirror, and a switching controller. The light transmissive display panel has a plurality of light emitting diodes. The switching optical mirror is located at a side of the light transmissive display panel, wherein the light emitting diodes are configured to emit light rays toward the switching optical mirror. The switching controller is electrically connected to the switching optical mirror and the light emitting diodes, and is configured to synchronize the switching optical mirror and the light emitting diodes to switch between a first display state and a second display state.

Description

Technical Field

[0001] This disclosure relates to a light-emitting diode display. Background Technology

[0002] In the field of displays, double-sided displays are frequently used as advertising billboards or signs. The common practice in double-sided displays is to first provide a substrate, and then attach the two displays to this substrate as the center. While this allows for double-sided display, the thickness of the two displays hinders the thinning of the device, resulting in a larger overall size. Summary of the Invention

[0003] One aspect of the technology disclosed herein is a light-emitting diode (LED) display.

[0004] According to one embodiment of this disclosure, a light-emitting diode (LED) display includes a light-transmitting display panel, a switching optical mirror, and a switching controller. The light-transmitting display panel has a plurality of LEDs. The switching optical mirror is located on one side of the light-transmitting display panel, wherein the LEDs are configured to emit light toward each of the switching optical mirrors. The switching controller is electrically connected to the switching optical mirror and the LEDs, and is configured to synchronously switch the switching optical mirror and the LEDs between a first display state and a second display state.

[0005] In one embodiment of this disclosure, the switchable optical mirror includes a transparent conductive layer, an ion storage layer, an electrolyte layer, a proton injection layer, and a metal hydride lens layer. The ion storage layer is located on the transparent conductive layer. The electrolyte layer is located on the ion storage layer. The proton injection layer is located on the ion storage layer. The metal hydride lens layer is located on the proton injection layer, wherein the metal hydride lens layer is configured to switch between a transparent state and a reflective state according to a signal from a switching controller.

[0006] In one embodiment of this disclosure, the switchable optical mirror includes a first transparent conductive layer, an electrolyte solution layer, a metal oxide-reduction layer, and a second transparent conductive layer. The electrolyte solution layer is located on the first transparent conductive layer. The metal oxide-reduction layer is located on the electrolyte solution layer, wherein the metal oxide-reduction layer is configured to switch between a transparent state and a reflective state according to a signal from a switching controller. The second transparent conductive layer is located on the metal oxide-reduction layer.

[0007] In one embodiment of this disclosure, the switchable optical mirror includes a first transparent conductive layer, a second transparent conductive layer, and a liquid crystal layer. The liquid crystal layer is located between the first and second transparent conductive layers, and is configured to switch between a horizontal state and a vertical state according to a signal from a switching controller.

[0008] In one embodiment of this disclosure, the switchable optical mirror includes a transparent conductive layer, a dielectric layer, and a flexible lens layer. The dielectric layer is located on the transparent conductive layer. The flexible lens layer is located on the dielectric layer, wherein the flexible lens layer is configured to switch between a rolled-up state and a flat state according to a signal from a switching controller.

[0009] In one embodiment of this disclosure, the light-emitting diode display further includes a light-modulation layer. The light-modulation layer is located between the light-emitting diode and the switching optical mirror.

[0010] In one embodiment of this disclosure, the light modulating layer is configured to offset the center position of the light emitted by the light-emitting diode.

[0011] In one embodiment of this disclosure, the light modulation layer is configured to diffuse the light emitted by the light-emitting diode.

[0012] In one embodiment of this disclosure, the light-emitting diode display further includes a planarization layer. The planarization layer covers the light-emitting diode.

[0013] In one embodiment of this disclosure, when the switching controller is configured to synchronously switch the switching optical mirror and the light-emitting diode to a first display state, the light-emitting diode switches to display the first display screen, and the switching optical mirror switches to a full-surface reflection state.

[0014] In one embodiment of this disclosure, when the switching controller is configured to synchronously switch the switching optical mirror and the light-emitting diode to the second display state, the light-emitting diode switches to display the second display screen, and the switching optical mirror switches to a fully transparent state.

[0015] In one embodiment of this disclosure, the switching controller is further configured to switch between a first display state and a second display state at time intervals.

[0016] In one embodiment of this disclosure, the time interval is less than one-sixtieth of a second.

[0017] In one embodiment of this disclosure, a first portion of a switchable optical lens corresponds to a first portion of a light-emitting diode (LED), and a second portion of the switchable optical lens corresponds to a second portion of an LED. A switching controller is configured to synchronously switch the first portion of the switchable optical lens and the first portion of the LED to a first display state, and is also configured to synchronously switch the second portion of the switchable optical lens and the second portion of the LED to a second display state. When the switching controller is configured to synchronously switch the first portion of the switchable optical lens and the first portion of the LED to the first display state, the first portion of the LED switches to display a first display image, and the first portion of the switchable optical lens switches to a reflective state. When the switching controller is configured to synchronously switch the second portion of the switchable optical lens and the second portion of the LED to the second display state, the second portion of the LED switches to display a second display image, and the second portion of the switchable optical lens switches to a transparent state.

[0018] In one embodiment of this disclosure, the switchable optical lens has a plurality of pixels. A first portion of the pixel corresponds to a first portion of a light-emitting diode (LED), and a second portion of the pixel corresponds to a second portion of an LED. A switching controller is configured to synchronously switch the first portion of the pixel and the first portion of the LED to a first display state, and is also configured to synchronously switch the second portion of the pixel and the second portion of the LED to a second display state. When the switching controller is configured to synchronously switch the first portion of the pixel and the first portion of the LED to the first display state, the first portion of the LED switches to display a first display image, and the first portion of the pixel switches to a reflective state. When the switching controller is configured to synchronously switch the second portion of the pixel and the second portion of the LED to the second display state, the second portion of the LED switches to display a second display image, and the second portion of the pixel switches to a transparent state.

[0019] In one embodiment of this disclosure, the switching controller is further configured to synchronously switch the first portion of the pixel and the first portion of the light-emitting diode to a second display state in the next frame, and to synchronously switch the second portion of the pixel and the second portion of the light-emitting diode to a first display state. When the switching controller is configured to synchronously switch the first portion of the pixel and the first portion of the light-emitting diode to the second display state, the first portion of the light-emitting diode switches to display a second display image, and the first portion of the pixel switches to a transparent state. When the switching controller is configured to synchronously switch the second portion of the pixel and the second portion of the light-emitting diode to the first display state, the second portion of the light-emitting diode switches to display a first display image, and the second portion of the pixel switches to a reflective state.

[0020] In one embodiment of this disclosure, the switchable optical lens has a plurality of subpixels, each subpixel corresponding to a light-emitting diode (LED). A first portion of the subpixel corresponds to a first portion of the LED, and a second portion of the subpixel corresponds to a second portion of the LED. A switching controller is configured to synchronously switch the first portion of the subpixel and the first portion of the LED to a first display state, and is also configured to synchronously switch the second portion of the subpixel and the second portion of the LED to a second display state. When the switching controller is configured to synchronously switch the first portion of the subpixel and the first portion of the LED to the first display state, the first portion of the LED switches to display a first display image, and the first portion of the subpixel switches to a reflective state. When the switching controller is configured to synchronously switch the second portion of the subpixel and the second portion of the LED to the second display state, the second portion of the LED switches to display a second display image, and the second portion of the subpixel switches to a transparent state.

[0021] In one embodiment of this disclosure, the switching controller is further configured to synchronously switch the first portion of the subpixel and the first portion of the light-emitting diode to a second display state in the next frame, and to synchronously switch the second portion of the subpixel and the second portion of the light-emitting diode to a first display state. When the switching controller is configured to synchronously switch the first portion of the subpixel and the first portion of the light-emitting diode to the second display state, the first portion of the light-emitting diode switches to display the second display image, and the first portion of the subpixel switches to a transparent state. When the switching controller is configured to synchronously switch the second portion of the pixel and the second portion of the light-emitting diode to the first display state, the second portion of the light-emitting diode switches to display the first display image, and the second portion of the subpixel switches to a reflective state.

[0022] In the above embodiments of this disclosure, since a switching optical lens is used in the light-emitting diode display and a switching controller is used to synchronously switch the light-emitting diode and the switching optical lens to the first display state and the second display state, the effect of double-sided display can be achieved. At the same time, the thickness of the device is reduced, making the double-sided light-emitting diode display lighter, thinner and smaller, which is beneficial to improving the competitiveness of the product. Attached Figure Description

[0023] The nature of this disclosure can be best understood by reading it in conjunction with the accompanying illustrations and by the embodiments described below. Note that, according to standard practice in the industry, the various features are not drawn to scale. In fact, the dimensions of the various features may be increased or decreased arbitrarily for clarity of explanation.

[0024] Figure 1 A cross-sectional view of a light-emitting diode display according to an embodiment of the present disclosure is shown.

[0025] Figures 2 to 9Cross-sectional views of a switchable optical mirror according to different embodiments of the present disclosure are shown.

[0026] Figure 10 A top view of a light modulation layer according to an embodiment of the present disclosure is shown.

[0027] Figure 11 Draw Figure 10 A cross-sectional schematic diagram of the offset rays of the optical modulation layer.

[0028] Figure 12 A top view of a light modulation layer according to another embodiment of the present disclosure is shown.

[0029] Figure 13 Draw Figure 12 A cross-sectional schematic diagram of the diffused light from the optical modulation layer.

[0030] Figures 14 to 17 A cross-sectional view illustrating the synchronous switching of a switching optical mirror and a light-emitting diode according to different embodiments of the present disclosure.

[0031] Figure 18 Draw Figure 17 A top view of a light-emitting diode display.

[0032] Figure 19 A cross-sectional view illustrating the synchronous switching of a switching optical mirror and a light-emitting diode according to another embodiment of the present disclosure is shown.

[0033] Figure 20 Draw Figure 19 A top view of a light-emitting diode display.

[0034] Figure 21 and Figure 22 A partially enlarged perspective view of a switching optical mirror and a light-emitting diode according to an embodiment of the present disclosure is shown.

[0035] The reference numerals in the attached figures are explained as follows:

[0036] 100, 100a: Light Emitting Diode Display

[0037] 110: Translucent display panel

[0038] 112: Light Emitting Diode

[0039] 112a: Part One

[0040] 112b: Part Two

[0041] 112c: Subpixel light-transmitting area

[0042] 120, 120a, 120b, 120c: Switchable optical lenses

[0043] 121: Transparent conductive layer

[0044] 121a: First transparent conductive layer

[0045] 121b: First transparent conductive layer

[0046] 121c: Transparent conductive layer

[0047] 122: Ion Storage Layer

[0048] 122a: Electrolyte solution layer

[0049] 122b: Liquid crystal layer

[0050] 122c: Dielectric layer

[0051] 123: Electrolyte layer

[0052] 123a: Metal oxide-reduction layer

[0053] 123b: Second transparent conductive layer

[0054] 123c: Flexible lens layer

[0055] 124: Proton Injection Layer

[0056] 124a: Second transparent conductive layer

[0057] 125: Metal hydride lens layer

[0058] 126: Part One

[0059] 127: Part Two

[0060] 130: Switch controller

[0061] 140, 140a: Optical modulation layer

[0062] 150: Flattening layer

[0063] D: Horizontal direction

[0064] L: Light

[0065] O1, O2: Observers Detailed Implementation

[0066] The following description of embodiments provides numerous different implementations, or examples, for carrying out various features of the provided object. Specific examples of elements and arrangements are described below to simplify the subject matter. Of course, these examples are merely illustrative and are not intended to be limiting. Furthermore, element symbols and / or letters may be repeated in various examples. This repetition is for simplicity and clarity and does not in itself specify the relationship between the various embodiments and / or configurations discussed.

[0067] Spatial relative terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for descriptive purposes to describe the relationship between one element or feature and another, as shown in the accompanying drawings. Spatial relative terms are intended to cover different orientations of the apparatus in use or operation other than those shown in the accompanying drawings. The apparatus may be oriented in other ways (rotated 90 degrees or otherwise), and the spatial relative descriptors used herein shall be interpreted accordingly.

[0068] Figure 1 A cross-sectional view of a light-emitting diode display 100 according to an embodiment of the present disclosure is shown. (Refer to...) Figure 1 A light-emitting diode (LED) display 100 includes a light-transmitting display panel 110, a switching optical lens 120, and a switching controller 130. The light-transmitting display panel 110 has a plurality of light-emitting diodes 112. Figure 1 In the illustration, the light-transmitting display panel 110 is shown with four light-emitting diodes 112, but this disclosure is not limited thereto. A switching optical mirror 120 is located on one side of the light-transmitting display panel 110, wherein the light-emitting diodes 112 are configured to emit light L toward each of the switching optical mirrors 120. A switching controller 130 is electrically connected to the switching optical mirror 120 and the light-emitting diodes 112 on the light-transmitting display panel 110, and is configured to synchronously switch the switching optical mirror 120 and the light-emitting diodes 112 between a first display state and a second display state. In some embodiments, the switching optical mirror 120 may have different states in the first and second display states, for example, the first display state may be reflective, and the second display state may be transmissive, to facilitate double-sided display. Figure 14 Detailed explanation.

[0069] Because the LED display 100 uses a switching optical lens 120 and a switching controller 130 to synchronously switch the LED 112 and the switching optical lens 120 to the first display state and the second display state, a double-sided display effect can be achieved. At the same time, the thickness of the device is reduced, making the double-sided LED display 100 lighter, thinner and smaller, which is beneficial to improving the competitiveness of the product.

[0070] In some embodiments, the LED display 100 further includes a light modulating layer 140. The light modulating layer 140 is located between the LED 112 and the switching optical mirror 120. Furthermore, the LED display 100 further includes a planarization layer 150. The planarization layer 150 covers the LED 112. In some embodiments, the LED display 100 further includes a barrier (not shown) located between two LEDs 112 to block light interference between the LEDs 112.

[0071] Figures 2 to 9 Cross-sectional views are shown of switchable optical mirrors 120, 120a, 120b, and 120c according to different embodiments of this disclosure. (Refer to...) Figure 2 and Figure 3 In some embodiments, the switchable optical mirror 120 includes a transparent conductive layer 121, an ion storage layer 122, an electrolyte layer 123, a proton injection layer 124, and a metal hydride lens layer 125. The ion storage layer 122 is located on the transparent conductive layer 121. The electrolyte layer 123 is located on the ion storage layer 122. The proton injection layer 124 is located on the electrolyte layer 123. The metal hydride lens layer 125 is located on the proton injection layer 124, wherein the metal hydride lens layer 125 is configured according to a switching controller 130 (see reference). Figure 1 The signal switches between a transparent state and a reflective state. In this embodiment, the transparent conductive layer 121 is made of indium tin oxide (ITO), the ion storage layer 122 is made of tungsten oxide (WO3), the electrolyte layer 123 is made of tantalum oxide (Ta2O5), the proton injection layer 124 is made of palladium (Pd), and the metal hydride lens layer 125 is made of magnesium-nickel alloy (Mg–NiAlloy). The metal hydride lens layer 125 extracts protons (i.e., hydrogen ions) from the proton injection layer 124 according to different voltages to form metal hydrides, which are in a transparent state (e.g., transparent). Figure 2 ), the metallic state is a reflective state (e.g. Figure 3 When switching to the reflective state, the material of the ion storage layer 122 becomes tungsten oxide hydride (H3WO3), and the material of the metal hydride lens layer 125 becomes a magnesium-nickel alloy hydride.

[0072] Reference Figure 4 and Figure 5 The switchable optical mirror 120a includes a first transparent conductive layer 121a, an electrolyte solution layer 122a, a metal oxide-reduction layer 123a, and a second transparent conductive layer 124a. The electrolyte solution layer 122a is located on the first transparent conductive layer 121a. The metal oxide-reduction layer 123a is located on the electrolyte solution layer 122a, wherein the metal oxide-reduction layer 123a is configured according to the switching controller 130 (see reference). Figure 1The signal switches between a transparent state and a reflective state. The second transparent conductive layer 124a is located on the metal oxide-reduction layer 123a. In this embodiment, the materials of the first transparent conductive layer 121a and the second transparent conductive layer 124a are indium tin oxide, and the material of the metal oxide-reduction layer 123a is silver. The metal oxide-reduction layer 123a can determine whether the silver is oxidized to silver ions and enters the electrolyte solution layer 122a (in a transparent state, as shown) based on the forward or reverse voltage. Figure 5 ), or reduced to silver atoms and returned to the metal oxide-reduction layer 123a (in this case, it is in a reflective state, such as Figure 4 ).

[0073] Reference Figure 6 and Figure 7 The switchable optical mirror 120b includes a first transparent conductive layer 121b, a liquid crystal layer 122b, and a second transparent conductive layer 123b. The liquid crystal layer 122b is located between the first transparent conductive layer 121b and the second transparent conductive layer 123b, wherein the liquid crystal layer 122b is configured to switch according to the switching controller 130 (refer to...). Figure 1 The signal switches between a horizontal and a vertical state. The liquid crystal molecules in the liquid crystal layer 122b can rotate between the horizontal and vertical states according to the electrical signal; the horizontal state is the reflection state of the switching optical mirror 120b (e.g., ...). Figure 6 The vertical state is the transmission state of the switchable optical mirror 120b (e.g., Figure 7 ).

[0074] Reference Figure 8 and Figure 9 The switchable optical mirror 120c includes a transparent conductive layer 121c, a dielectric layer 122c, and a flexible lens layer 123c. The dielectric layer 122c is located on the transparent conductive layer 121c. The flexible lens layer 123c is located on the dielectric layer 122c, wherein the flexible lens layer 123c is configured according to the switching controller 130 (see reference). Figure 1 The signal switches between a curled state and a flat state. The flexible lens layer 123c is a thin metal layer that curls when energized. At this time, since most of the flexible lens layer 123c (only the left contact portion remains) is away from the surface of the switching optical mirror 120c, most of the light can be transmitted (e.g., Figure 9 When no power is applied, the flexible lens layer 123c adheres to the surface of the switching optical mirror 120c, thus the switching optical mirror 120c is in a reflective state (e.g., ...). Figure 8 ).

[0075] The aforementioned switching optical mirrors 120, 120a, 120b, and 120c can be freely used in the switching optical mirror 120 of the LED display 100.

[0076] Figure 10 A top view of an optical modulation layer 140 according to an embodiment of the present disclosure is shown. Figure 11 Draw Figure 10 A schematic cross-sectional view of the offset ray L in the optical modulation layer 140. Also refer to... Figure 10 and Figure 11 In some embodiments, the light modulating layer 140 is configured to offset the center position of the light ray L emitted by the light-emitting diode 112. This design can shift the center brightness position, increasing the brightness of the light ray L emitted by the light-emitting diode 112 when reflected by the switching optical mirror 120.

[0077] Figure 12 A top view of a light modulation layer 140a according to another embodiment of the present disclosure is shown. Figure 13 Draw Figure 12 A schematic cross-sectional view of the diffuser ray L in the 140a optical modulation layer. Also refer to... Figure 12 and Figure 13 The light-emitting diode display 100a includes a light-modulation layer 140a. The light-modulation layer 140a is configured to diffuse the light L emitted by the light-emitting diode 112. This design diffuses the brightness so that when the switching optical mirror 120 reflects the light L of the light-emitting diode 112, the proportion of light L blocked by the opaque light-emitting diode 112 can be reduced.

[0078] Figures 14 to 17 A cross-sectional view illustrating the synchronous switching of the switching optical mirror 120 and the light-emitting diode 112 according to different embodiments of this disclosure is shown. (Refer to...) Figure 14 and Figure 15 The switching controller 130 is configured to synchronize the switching optical mirror 120 and the light-emitting diode 112. When the switching controller 130 synchronizes the switching optical mirror 120 and the light-emitting diode 112 to the first display state, the light-emitting diode 112 switches to display the first display image, and the switching optical mirror 120 switches to a full-surface reflection state (e.g., ...). Figure 14 At this time, the observer O1, located to the left of the LED display 100, can see the first display image. When the switching controller 130 synchronously switches the switching optical mirror 120 and the LED 112 to the second display state, the LED 112 switches to display the second display image, and the switching optical mirror 120 switches to a completely transparent state (e.g., ...). Figure 15At this time, observer O2, located to the right of the LED display 100, can see the second display image, while observer O1, located to the left of the LED display 100, will see the entire LED display 100 as transparent. This state is called a global switch, meaning that the entire switching optical lens 120 switches between the first display state and the second display state simultaneously. In some embodiments, the first display image and the second display image may be different. In some embodiments, the switching controller 130 is further configured to switch between the first display state and the second display state at a time interval less than one-sixtieth of a second.

[0079] Reference Figure 16 ,exist Figure 16 In this embodiment, the switching optical mirror 120 no longer uses global switching, but rather local switching. In this embodiment, the switching optical mirror 120 is divided into a first part 126 and a second part 127, and the light-emitting diode 112 is also divided into a first part 112a and a second part 112b. The first part 126 of the switching optical mirror 120 corresponds to the first part 112a of the light-emitting diode 112, and the second part 127 of the switching optical mirror 120 corresponds to the second part 112b of the light-emitting diode 112. In this document, "corresponds" means that they are opposite each other along the horizontal direction D. At this time, the switching controller 130 will synchronously switch the first part 126 of the switching optical mirror 120 and the first part 112a of the light-emitting diode 112 to the first display state, and synchronously switch the second part 127 of the switching optical mirror 120 and the second part 112b of the light-emitting diode 112 to the second display state. When the switching controller 130 is configured to synchronously switch the first portion 126 of the switching optical mirror 120 and the first portion 112a of the light-emitting diode 112 to the first display state, the first portion 112a of the light-emitting diode 112 switches to display the first display image, and the first portion 126 of the switching optical mirror 120 switches to a reflective state. When the second portion 127 of the switching optical mirror 120 and the second portion 112b of the light-emitting diode 112 synchronously switch to the second display state, the second portion 112b of the light-emitting diode 112 switches to display the second display image, and the second portion 127 of the switching optical mirror 120 switches to a transparent state. In this state, observers O1 and O2 on both sides of the light-emitting diode display 100 can see the images of the two portions of the light-emitting diode display 100 respectively, and the display image of the first portion 126 seen by observer O1 and the display image of the second portion 127 seen by observer O2 do not overlap.

[0080] Figure 18 Draw Figure 17A top view of the LED display 100. (Refer to...) Figure 17 and Figure 18 , Figure 17 and Figure 18 Implementation methods and Figure 16 The difference lies in that, in this embodiment, the switching optical lens 120 has multiple pixels. The first portion 126 of the pixel corresponds to the first portion 112a of the light-emitting diode 112, and the second portion 127 of the pixel corresponds to the second portion 112b of the light-emitting diode 112. That is, in this embodiment, the first portion 126 and the second portion 127 of the switching optical lens 120 are subdivided to the pixel level, and the first portion 112a and the second portion 112b of the light-emitting diode 112 are also subdivided to the pixel level. This design allows observers O1 and O2 on both sides of the LED display 100 to see the complete image (with only a decrease in resolution), and the images displayed on the two sides can be different.

[0081] Figure 19 A cross-sectional view illustrating the synchronous switching of a switching optical mirror 120 and a light-emitting diode 112 according to another embodiment of the present disclosure. Figure 20 Draw Figure 19 A top view of the LED display 100. (Refer to...) Figure 19 and Figure 20 The switching controller 130 is further configured to, in the next frame, synchronously switch the first portion 126 of the pixel and the first portion 112a of the light-emitting diode 112 to a second display state, and synchronously switch the second portion 127 of the pixel and the second portion 112b of the light-emitting diode 112 to a first display state. When the switching controller 130 synchronously switches the first portion 126 of the pixel and the first portion 112a of the light-emitting diode 112 to the second display state, the first portion 112a of the light-emitting diode 112 switches to display the second display image, and the first portion 126 of the pixel switches to a transparent state. When the switching controller 130 is configured to synchronously switch the second portion 127 of the pixel and the second portion 112b of the light-emitting diode 112 to the first display state, the second portion 112b of the light-emitting diode 112 switches to display the first display image, and the second portion 127 of the pixel switches to a reflective state. That is, the pixel of the first portion 126 switches between reflective and transparent states every frame, and the first portion 112a of the light-emitting diode 112 switches between the first and second display images every frame. This design allows the LED display 100 to produce rapidly switching complementary images, ensuring that observer O1 always sees the first display image and observer O2 sees the second display image during the switching process. In some implementations, the image switching rate can be increased by increasing the number of switches per frame (equivalent to increasing the frame rate).

[0082] Figure 21 and Figure 22 A partially enlarged perspective view of a switchable optical mirror 120 and a light-emitting diode 112 according to an embodiment of the present disclosure is shown. (Refer to...) Figure 21 and Figure 22 , Figure 21 and Figure 22 Implementation methods and Figures 17 to 20 The difference in implementation lies in that, in this embodiment, the switching optical lens 120 has multiple sub-pixels, each corresponding one-to-one with a light-emitting diode 112. Specifically, the first portion 126 of the upper row of sub-pixels corresponds to the first portion 112a of the light-emitting diode 112, the first portion 126 of the lower row corresponds to the light-transmitting area 112c of the sub-pixel, and the second portion 127 of the sub-pixel corresponds to the second portion 112b of the light-emitting diode 112. In other words, the control of the switching optical lens 120 in this embodiment is precise down to the sub-pixel level. Furthermore, the switching controller 130 is further configured to synchronously switch the first portion 126 of the sub-pixel and the first portion 112a of the light-emitting diode 112 to a second display state in the next frame, and to synchronously switch the second portion 127 of the sub-pixel and the second portion 112b of the light-emitting diode 112 to a first display state. That is, the switching controller 130 allows the switching optical lens 120 and the light-emitting diode 112 to... Figures 17 to 20 The switching is synchronized in a typical manner, ensuring that observers on both sides always see their respective images. In addition to the area where the LEDs 112 are located, there is also a sub-pixel light-transmitting area 112c, which can also be configured to correspond to the switching optical lens. The arrangement of the sub-pixels of the LEDs 112 and the sub-pixel light-transmitting area 112c is not limited to this.

[0083] The foregoing outlines the features of several embodiments to enable those skilled in the art to better understand the nature of this disclosure. Those skilled in the art should understand that they can readily use this disclosure as the basis for designing or modifying other processes and structures to achieve the same purposes and / or advantages as the embodiments described herein. Those skilled in the art should also recognize that such equivalent constructions do not depart from the spirit and scope of this disclosure, and that various changes, substitutions, and alterations can be made to them without departing from the spirit and scope of this disclosure.

Claims

1. A light-emitting diode display, comprising: A light-transmitting display panel with multiple light-emitting diodes; A switchable optical mirror is located on one side of the light-transmitting display panel, wherein the plurality of light-emitting diodes are configured to emit a light beam toward each of the switchable optical mirrors; A switching controller is electrically connected to the switching optical mirror and the plurality of light-emitting diodes (LEDs), and configured to synchronously switch the switching optical mirror and the plurality of LEDs between a first display state and a second display state, wherein the first display state of the switching optical mirror is reflective and the second display state of the switching optical mirror is transmissive; and A light-modulating layer is located between the plurality of light-emitting diodes and the switching optical mirror.

2. The light-emitting diode display of claim 1, wherein the switching optical lens comprises: A transparent conductive layer; An ion storage layer is located on the transparent conductive layer; An electrolyte layer is located on the ion storage layer; A proton injection layer is located on the ion storage layer; and A metal hydride lens layer is located on the proton injection layer, wherein the metal hydride lens layer is configured to switch between a transparent state and a reflective state according to a signal from the switching controller.

3. The light-emitting diode display of claim 1, wherein the switching optical lens comprises: A first transparent conductive layer; An electrolyte solution layer is located on the first transparent conductive layer; A metal oxide-reduction layer is located on the electrolyte solution layer, wherein the metal oxide-reduction layer is configured to switch between a transparent state and a reflective state according to a signal from the switching controller; and A second transparent conductive layer is located on the metal oxide-reduction layer.

4. The light-emitting diode display of claim 1, wherein the switching optical lens comprises: A first transparent conductive layer; A second transparent conductive layer; and A liquid crystal layer is located between the first transparent conductive layer and the second transparent conductive layer, wherein the liquid crystal layer is configured to switch between a horizontal state and a vertical state according to a signal from the switching controller.

5. The light-emitting diode display of claim 1, wherein the switching optical lens comprises: A transparent conductive layer; A dielectric layer is located on the transparent conductive layer; and A flexible lens layer is located on the dielectric layer, wherein the flexible lens layer is configured to switch between a curled state and a flat state according to a signal from the switching controller.

6. The light-emitting diode display of claim 1, wherein the light pattern modulation layer is configured to offset a central position of the light emitted by the plurality of light-emitting diodes.

7. The light-emitting diode display of claim 1, wherein the light pattern modulation layer is configured to diffuse the light emitted by the plurality of light-emitting diodes.

8. The light-emitting diode display as claimed in claim 1, further comprising: A flat layer covers the multiple light-emitting diodes.

9. The LED display as claimed in claim 1, wherein when the switching controller is configured to synchronously switch the switching optical mirror and the plurality of LEDs to the first display state, the plurality of LEDs switch to display a first display image, and the switching optical mirror switches to a full-surface reflection state.

10. The LED display as claimed in claim 1, wherein when the switching controller is configured to synchronously switch the switching optical lens and the plurality of LEDs to the second display state, the plurality of LEDs switch to display a second display image, and the switching optical lens switches to a fully transparent state.

11. The LED display of claim 1, wherein the switching controller is further configured to switch the first display state and the second display state at a time interval.

12. The light-emitting diode display of claim 11, wherein the time interval is less than one-sixtieth of a second.

13. The LED display of claim 1, wherein a first portion of the switching optical lens corresponds to a first portion of the plurality of LEDs, a second portion of the switching optical lens corresponds to a second portion of the plurality of LEDs, the switching controller is configured to synchronously switch the first portion of the switching optical lens and the first portions of the plurality of LEDs to the first display state, and is configured to synchronously switch the second portion of the switching optical lens and the second portions of the plurality of LEDs to the second display state. When the switching controller is configured to synchronously switch the first portion of the switching optical lens and the first portions of the plurality of LEDs to the first display state, the first portions of the plurality of LEDs switch to display a first display image, and the first portion of the switching optical lens switches to a reflective state. When the switching controller is configured to synchronously switch the second portion of the switching optical lens and the second portions of the plurality of LEDs to the second display state, the second portions of the plurality of LEDs switch to display a second display image, and the second portion of the switching optical lens switches to a transparent state.

14. The light-emitting diode display of claim 1, wherein the switching optical lens has a plurality of pixels, a first portion of the plurality of pixels corresponds to a first portion of the plurality of light-emitting diodes, a second portion of the plurality of pixels corresponds to a second portion of the plurality of light-emitting diodes, the switching controller is configured to synchronously switch the first portion of the plurality of pixels and the first portion of the plurality of light-emitting diodes to the first display state, and is configured to synchronously switch the second portion of the plurality of pixels and the second portion of the plurality of light-emitting diodes to the second display state, wherein when the switching controller is configured to synchronously switch the first portion of the plurality of pixels and the first portion of the plurality of light-emitting diodes to the first display state, the first portion of the plurality of light-emitting diodes switches to display a first display image and the first portion of the plurality of pixels switches to a reflective state, and when the switching controller is configured to synchronously switch the second portion of the plurality of pixels and the second portion of the plurality of light-emitting diodes to the second display state, the second portion of the plurality of light-emitting diodes switches to display a second display image and the second portion of the plurality of pixels switches to a transparent state.

15. The LED display of claim 14, wherein the switching controller is further configured to synchronously switch the first portion of the plurality of pixels and the first portion of the plurality of LEDs to the second display state in the next frame, and configured to synchronously switch the second portion of the plurality of pixels and the second portion of the plurality of LEDs to the first display state, wherein when the switching controller is configured to synchronously switch the first portion of the plurality of pixels and the first portion of the plurality of LEDs to the second display state, the first portion of the plurality of LEDs switches to display the second display image, and the first portion of the plurality of pixels switches to a transparent state; wherein when the switching controller is configured to synchronously switch the second portion of the plurality of pixels and the second portion of the plurality of LEDs to the first display state, the second portion of the plurality of LEDs switches to display the first display image, and the second portion of the plurality of pixels switches to a reflective state.

16. The light-emitting diode display of claim 1, wherein the switching optical lens has a plurality of subpixels, each subpixel corresponding to one of the plurality of light-emitting diodes, and a first portion of each subpixel corresponding to a first portion of each of the plurality of light-emitting diodes, a second portion of each subpixel corresponding to a second portion of each of the plurality of light-emitting diodes, the switching controller being configured to synchronously switch the first portion of each subpixel and the first portion of each of the plurality of light-emitting diodes to the first display state, and being configured to synchronously switch the second portion of each subpixel and the second portion of each of the plurality of light-emitting diodes to the second display state. In the second display state, when the switching controller is configured to synchronously switch the first portion of the plurality of sub-pixels and the first portion of the plurality of light-emitting diodes to the first display state, the first portion of the plurality of light-emitting diodes switches to display a first display image, and the first portion of the plurality of sub-pixels switches to a reflective state. When the switching controller is configured to synchronously switch the second portion of the plurality of sub-pixels and the second portion of the plurality of light-emitting diodes to the second display state, the second portion of the plurality of light-emitting diodes switches to display a second display image, and the second portion of the plurality of sub-pixels switches to a transparent state.

17. The LED display of claim 16, wherein the switching controller is further configured to synchronously switch the first portion of the plurality of subpixels and the first portion of the plurality of LEDs to the second display state in the next frame, and is configured to synchronously switch the second portion of the plurality of subpixels and the second portion of the plurality of LEDs to the first display state. When the switching controller is configured to synchronously switch the first portion of the plurality of subpixels and the first portion of the plurality of LEDs to the second display state, the first portion of the plurality of LEDs switches to display the second display image, and the first portion of the plurality of subpixels switches to a transparent state. When the switching controller is configured to synchronously switch the second portion of the plurality of subpixels and the second portion of the plurality of LEDs to the first display state, the second portion of the plurality of LEDs switches to display the first display image, and the second portion of the plurality of subpixels switches to a reflective state.

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