Double-sided display

Abstract

To provide a double-sided display that can reduce the risk of information leakage.SOLUTION: A double-sided display including a first surface, and a second surface opposed to the first surface is provided. The double-sided display includes a first display panel, a second display panel, and a backlight module. The first display panel is used to display an image on the first surface. The second display panel is used to display an image on the second surface. The backlight module is provided between the first display panel and the second display panel, and provides a light source to the first display panel and the second display panel. The backlight module includes a light guide plate, a light emitting element, and a peep prevention element. The light emitting element is constituted so as to provide the light source, and is arranged adjacently to one side of the light guide plate. The peep prevention element is constituted so as to adjust the emission angle of display light, and is arranged between the light guide plate and the second display panel.SELECTED DRAWING: Figure 1B

Description

[Technical Field]

[0001] The present invention relates to a double-sided display, and in particular to a double-sided display for medical applications. [Background technology]

[0002] Double-sided touch displays have not yet been applied in the medical field, mainly due to the possibility of personal information being leaked when displayed and / or the fact that frequent contact with users can easily lead to disease transmission. Summary of the Invention [Problem to be solved by the invention]

[0003] The present disclosure provides a double-sided display that can reduce the risk of information leakage. [Means for solving the problem]

[0004] According to some embodiments of the present disclosure, there is provided a dual-sided display including a first surface and a second surface opposite the first surface. The dual-sided display includes a first display panel, a second display panel, and a backlight module. The first display panel is configured to display an image on the first surface. The second display panel is configured to display an image on the second surface. The backlight module is disposed between the first display panel and the second display panel and provides a light source for the first display panel and the second display panel. The backlight module includes a light guide plate, a light-emitting element, and an anti-peeping element. The light-emitting element is configured to provide a light source and is disposed adjacent to one side of the light guide plate. The anti-peeping element is configured to adjust the output angle of the display light and is disposed between the light guide plate and the second display panel. [Effects of the Invention]

[0005] Based on the above, the backlight module of the dual-sided display provided by the present invention includes an anti-peeping element disposed between the light guide plate and the second display panel, thereby reducing the risk of information leakage when using the second display panel to display information.

[0006] In order to make the above-mentioned features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. [Brief explanation of the drawings]

[0007] [Figure 1A] 1 is a schematic three-dimensional view of a dual-sided display according to an embodiment of the present invention; [Figure 1B] 1B is a schematic partial cross-sectional view of the dual-sided display according to the embodiment of FIG. 1A. [Figure 2] 1 is a schematic diagram illustrating a method of coupling a first display panel and a second display panel of a dual-sided display to an electronic device according to an embodiment of the present invention. [Figure 3] FIG. 3 is a schematic partial cross-sectional view of another embodiment of a dual-sided display of FIG. 1A. DETAILED DESCRIPTION OF THE INVENTION

[0008] DETAILED DESCRIPTION OF THE INVENTION Reference will now be made in detail to exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0009] The present disclosure can be understood by referring to the following detailed description in combination with the accompanying drawings. To facilitate reader understanding and simplify the drawings, the drawings in this disclosure show only a portion of an electronic device, and specific components in the drawings are not drawn to actual scale. Furthermore, the number and size of each component in the drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure.

[0010] Certain terms are used throughout this disclosure and the appended claims to refer to particular components. Those skilled in the art will appreciate that electronics manufacturers may refer to the same component by different names. This disclosure does not intend to distinguish between components with the same function but different names. In the following specification and claims, the terms "comprises," "contains," and "has" are open-ended terms and should be interpreted as "including, but not limited to." Thus, when the terms "comprises," "contains," and / or "has" are used in describing this disclosure, they identify the presence of corresponding features, regions, steps, operations, and / or components, but do not exclude the presence of one or more corresponding features, regions, steps, operations, and / or components.

[0011] Any directional terms used herein, such as "top," "bottom," "front," "back," "left," and "right," are merely intended to refer to directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes only and are not intended to limit the present disclosure. In the drawings, each figure illustrates general features of methods, structures, and / or materials used in particular embodiments. However, these figures should not be construed as defining or limiting the scope or nature of the embodiments. For example, the relative size, thickness, and location of each layer, region, and / or structure may be reduced or enlarged for clarity.

[0012] When a component (layer, region, etc.) is described as being "on another component," it may be disposed or formed directly on the other component, or there may be other components interposed between them. On the other hand, when it is described as being "directly on another component," there is no component between them. Also, when it is described as being "on another component," the two components are in a hierarchical relationship in a top view direction, and the component may be located above or below the other component, and the hierarchical relationship will vary depending on the orientation of the device.

[0013] The terms "equal" or "same" and "essentially" or "substantially" are generally interpreted as within 20% of a particular value or range, or within 10%, 5%, 3%, 2%, 1%, or 0.5% of a value or range.

[0014] In this specification and claims, ordinal numbers such as "first" and "second" are used to modify elements, but do not imply or represent that the elements have an ordinal number, nor do they indicate an order among elements or an order in a manufacturing method. These ordinal numbers are used solely to clearly distinguish an element having a certain name from another element having the same name. Different terminology may be used in the claims and this specification; for example, a first element in this specification may be a second element in the claims.

[0015] It should be understood that the following embodiments can be completed by replacing, rearranging, and combining features of multiple different embodiments without departing from the spirit of the present disclosure. As long as the features of the embodiments do not contradict the concept of the present disclosure and are not mutually inconsistent, they can be combined as needed.

[0016] Electrical connections or coupling relationships described in this disclosure may refer to direct connections or indirect connections, where the endpoints of two circuit elements are directly connected or connected to each other by a conductor segment, and where the endpoints of two circuit elements are connected by a switch, diode, capacitor, inductor, resistor, or other suitable element or combination of the above elements, but the disclosure is not limited thereto.

[0017] In the present disclosure, thickness, length, width, and area measurements can be performed using an optical microscope, and thickness can be obtained by measuring cross-sectional images using an electron microscope, but the present invention is not limited thereto. Furthermore, a certain degree of error can be tolerated between any two values ​​or directions used for comparison. When a first value and a second value are equal, this means that there can be an error of approximately 10% between the first value and the second value. When the first direction is perpendicular to the second direction, the angular difference between the first direction and the second direction can be between 80 degrees and 100 degrees. When the first direction is parallel to the second direction, the angular difference between the first direction and the second direction can be between 0 degrees and 10 degrees.

[0018] The display device of the present disclosure may be a non-emissive display device, an emissive display device, or a dual-sided display device. The display device may include, for example, diodes, liquid crystals, light-emitting diodes (LEDs), quantum dots (QDs), phosphors, fluorescent materials, phosphorescent materials, or other suitable display media, or a combination thereof. The light-emitting diodes may include, for example, organic light-emitting diodes (OLEDs), micro-LEDs (micro-LEDs, mini-LEDs), mini-LEDs (mini-LEDs), or quantum dot light-emitting diodes (QDLEDs), but the invention is not limited thereto. The display device may have any arrangement or combination of the foregoing, but the invention is not limited thereto. Furthermore, the display device may have a rectangular, circular, polygonal, curved-edge, or other suitable shape. The display device may include peripheral systems such as a driving system, a control system, and a light source system.

[0019] Figure 1A is a schematic three-dimensional view of a dual-sided display according to one embodiment of the present invention, and Figure 1B is a schematic partial cross-sectional view of the dual-sided display according to the embodiment of Figure 1A.

[0020] 1A and 1B, the dual-sided display 10a of this embodiment includes a first surface 10S1 and a second surface 10S2 opposite to the first surface 10S1. The first surface 10S1 and the second surface 10S2 may be used to display the same image or different images, as will be described in detail in the following embodiments. The dual-sided display 10a of this embodiment may be applied to a medical display in which the first surface 10S1 faces medical personnel and the second surface 10S2 faces patients. However, the present invention is not limited thereto. In other embodiments, the dual-sided display 10a may be applied to a digital gallery, a mobile phone, a tablet computer, and / or a public information display.

[0021] In this embodiment, the dual-sided display 10a includes a first display panel 100, a second display panel 200, and a backlight module 300a.

[0022] The first display panel 100 emits light in a direction d1, for example, and displays an image on the first surface 10S1 of the dual-sided display 10a. The first display panel 100 is a liquid crystal display panel, but the present invention is not limited thereto. In some embodiments, the first display panel 100 includes a substrate (not shown), an element layer (not shown), and a display medium (not shown). The substrate of the first display panel 100 may include, for example, a flexible or non-flexible substrate, and the substrate material may include, for example, glass, plastic, or a combination thereof. For example, the substrate of the first display panel 100 may include, for example, quartz, sapphire, polymethyl methacrylate (PMMA), polycarbonate (PC), polyimide (PI), polyethylene terephthalate (PET), or other suitable material, or a combination thereof, but the present invention is not limited thereto. The element layer of the first display panel 100 may be disposed on the substrate, for example, and may include, for example, a circuit structure for driving the display medium. For example, the element layer of the first display panel 100 may include a plurality of scan lines, a plurality of data lines, an insulating layer, a plurality of capacitors, a plurality of transistors, and / or a plurality of electrodes, but the present invention is not limited thereto. In some embodiments, the element layer of the first display panel 100 may include a plurality of circuits instead of transistors. The display medium of the first display panel 100 may be disposed on the element layer, for example. In this embodiment, the display medium of the first display panel 100 includes liquid crystal molecules, which are liquid crystal molecules that can be rotated or switched by a vertical electric field or liquid crystal molecules that can be rotated or switched by a horizontal electric field. However, the present invention is not limited thereto.

[0023] The second display panel 200 emits light in a direction different from the direction d1, for example, and displays an image on the second surface 10S2 of the dual-sided display 10a. In this embodiment, the second display panel 200 emits light in the direction opposite to the direction d1, but the present invention is not limited to this. Also, in this embodiment, the second display panel 200 is also a liquid crystal display panel. That is, the second display panel 200 may be the same as or similar to the first display panel 100, but the present invention is not limited to this.

[0024] The backlight module 300a is disposed, for example, between the first display panel 100 and the second display panel 200, and provides a light source for the first display panel 100 and the second display panel 200. In this embodiment, the backlight module 300 includes a light guide plate 310, a light emitting element 320, and an anti-peeping element 330a.

[0025] The light guide plate 310 includes, for example, a first light-emitting surface (not shown) facing the first display panel 100 and a second light-emitting surface (not shown) facing the second display panel 200. Furthermore, the light guide plate 310 has, for example, high light transmittance and is used, for example, to guide the direction of light. Specifically, the light guide plate 310 can provide light emitted from the light-emitting element 320 to the first display panel 100 and the second display panel 200, respectively. In some embodiments, the first light-emitting surface and the second light-emitting surface of the light guide plate 310 may have a plurality of first microstructures (not shown) and a plurality of second microstructures (not shown), respectively. The number of the first microstructures per unit area may be the same as or different from the number of the second microstructures per unit area. Furthermore, in some embodiments, the surface of the first microstructures is one of a curved surface and a flat surface, and the surface of the second microstructures is the other of a curved surface and a flat surface. However, the present invention is not limited thereto. The first and second microstructures of the light guide plate 310 may be used to transmit light emitted from the light emitting element 320 into the light guide plate 310 to provide a surface light source with excellent uniformity, for example, but the present invention is not limited thereto.

[0026] The light emitting element 320 is used to provide a light source for the light guide plate 310, and is disposed adjacent to one side of the light guide plate 310, for example. In this embodiment, the light emitting element 320 is an edge-type light emitting element, which can reduce the thickness of the dual-sided display 10a, but the present invention is not limited thereto. Light provided from the light emitting element 320 passes through the light guide plate 310 and is provided to the first display panel 100 and the second display panel 200, respectively, via a first light-emitting surface and a second light-emitting surface of the light guide plate 310. The light emitting element 320 may include a light emitting diode, for example. The light emitting element 320 may include a light emitting diode point light source, but the present invention is not limited thereto.

[0027] The anti-peeping element 330a is used, for example, to adjust the output angle of display light and is disposed, for example, between the light guide plate 310 and the second display panel 200. Specifically, after light passes through the light guide plate 310 and the anti-peeping element 330a, the divergence of the light is reduced and / or the collimation of the light is improved. That is, the anti-peeping element 330a is used to collimate the light from the light guide plate 310. In this embodiment, the anti-peeping element 330a includes an anti-peeping sheet. Specifically, the anti-peeping element 330a may include, for example, a plurality of light-blocking structures (not shown) and a plurality of light-transmitting structures (not shown). The light-blocking structures and the light-transmitting structures may be alternately arranged in a direction d2. The direction d2 may be, for example, perpendicular to the direction d1, but the present invention is not limited thereto. For example, one light-transmitting structure may be disposed between two adjacent light-blocking structures, but the present invention is not limited thereto. Although FIG. 1B shows the position of the anti-peeping element 330a between the light guide plate 310 and the second display panel 200, the present invention is not limited to this.

[0028] In some embodiments, the backlight module 300a further includes a first diffusion sheet 340, a second diffusion sheet 350, a third diffusion sheet 360, a first prism sheet 370, a second prism sheet 380, and a dual brightness enhancement film (DBEF) 390.

[0029] The first diffusion sheet 340 is disposed, for example, between the first display panel 100 and the light guide plate 310. In some embodiments, the first diffusion sheet 340 is used to diffuse light provided from the light guide plate 310 to the first display panel 100, for example, to hide scratches. The second diffusion sheet 350 is disposed between the first diffusion sheet 340 and the light guide plate 310. In some embodiments, the second diffusion sheet 350 is also used to diffuse light provided from the light guide plate 310 to the first display panel 100, for example, to have a relatively high light transmittance. The third diffusion sheet 360 is disposed, for example, between the second display panel 200 and the light guide plate 310. In some embodiments, the third diffusion sheet 360 is used to diffuse light from the light guide plate 310 to provide it to the second display panel 200, for example, to have a relatively high light transmittance.

[0030] The first prism sheet 370 is disposed, for example, between the first diffusion sheet 340 and the second diffusion sheet 350. In some embodiments, the first prism sheet 370 may include a plurality of prism structures (not shown) for concentrating light from the light guide plate 310 in the direction of the front viewing angle of the first display panel 100, but the present invention is not limited thereto. The second prism sheet 380 is disposed, for example, between the third diffusion sheet 360 and the anti-spy element 330a. In some embodiments, the second prism sheet 380 may also include a plurality of prism structures (not shown) for concentrating light from the light guide plate 310 in the direction of the front viewing angle of the second display panel 200, but the present invention is not limited thereto.

[0031] The dual brightness enhancement film 390 is disposed, for example, between the second prism sheet 380 and the anti-spy element 330a. In some embodiments, the dual brightness enhancement film 390 is used to improve the utilization efficiency of light provided from the light guide plate 310 to the second display panel 200. In this embodiment, the angle of the dual brightness enhancement film 390 is 90 degrees with respect to the extension direction of the light blocking structure of the anti-spy element 330a, but the present invention is not limited thereto.

[0032] In some embodiments, the dual-sided display 10a further includes a first touch layer TL1, a second touch layer TL2, a first cover plate CG1 and a second cover plate CG2.

[0033] The first touch layer TL1 may be disposed on one side of the first display panel 100, away from the backlight module 300a. From another perspective, the first display panel 100 may be disposed between the first touch layer TL1 and the backlight module 300a. The first touch layer TL1 may be attached to the first display panel 100 via an adhesive layer AL1. In some embodiments, the adhesive layer AL1 may include an optically transparent adhesive (OCA), which may include acrylic resin, silicone resin, epoxy resin, or other suitable material, or a combination of the above materials, but the present invention is not limited thereto. In some embodiments, the first touch layer TL1 may include a plurality of touch patterns (not shown) arranged in an array and having a specific shape to achieve capacitive coupling. Based on this, when a user's finger or other object contacts or approaches a portion of the touch pattern on the first touch layer TL1, a change in the capacitance value of the touch pattern can be used to determine whether a touch operation has been completed and to identify a touch location corresponding to the touch operation. In some embodiments, the material of the first touch layer TL1 includes a transparent conductive material. For example, the material of the first touch layer TL1 may be a transparent conductive oxide (TCO), and the material may include indium zinc oxide (IZO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), or other suitable materials, but the present invention is not limited thereto.

[0034] The second touch layer TL2 may be disposed on one side of the second display panel 200 away from the backlight module 300a. From another perspective, the second display panel 200 may be disposed between the second touch layer TL2 and the backlight module 300a. The second touch layer TL2 may be attached to the second display panel 200 via an adhesive layer AL2. In some embodiments, the adhesive layer AL2 may include an optically transparent adhesive, but the present invention is not limited thereto. In this embodiment, the second touch layer TL2 may be the same as or similar to the first touch layer TL1, but the present invention is not limited thereto.

[0035] The first cover plate CG1 is disposed on the first touch layer TL1, for example, on one side of the first touch layer TL1 away from the first display panel 100. The first cover plate CG1 may be dustproof, scratch-resistant, and waterproof to reduce the influence of the external environment on components in the dual-sided display 10a, and may be light-transmitting. In some embodiments, the material of the first cover plate CG1 may include glass. The type or composition of the glass is not particularly limited, and may be, for example, aluminosilicate glass, lithium aluminosilicate glass, soda-lime silicate glass, quartz glass, or other light-transmitting glass, but the present invention is not limited thereto. In other embodiments, the material of the first cover plate CG1 may include an organic material, for example, resin, acrylic, or other suitable organic material. This method involves applying a curable composition to a support, drying, and curing the composition. In this embodiment, the covering area of ​​the first cover plate CG1 is equal to or greater than the area of ​​the first touch layer TL1, thereby reducing the impact of the external environment on the first touch layer TL1, but the present invention is not limited thereto. In some embodiments, the edge of the first cover plate CG1 may have an arc angle, but the present invention is not limited thereto.

[0036] The second cover plate CG2 is disposed on the second touch layer TL2, for example, on one side of the second touch layer TL2 away from the second display panel 200. In this embodiment, the second cover plate CG2 may be the same as or similar to the first cover plate CG1, but the present invention is not limited thereto. In this embodiment, the covering area of ​​the second cover plate CG2 is equal to or greater than the area of ​​the second touch layer TL2, thereby reducing the influence of the external environment on the second touch layer TL2, but the present invention is not limited thereto. In some embodiments, the edge of the second cover plate CG2 may have an arc angle, but the present invention is not limited thereto.

[0037] In this embodiment, the first cover plate CG1 and / or the second cover plate CG2 further include an antibacterial structure. In one embodiment, the antibacterial structure may be, for example, an antibacterial film AF1 and an antibacterial film AF2 coated on the surfaces adjacent to the light-emitting side of the first cover plate CG1 and the second cover plate CG2, respectively. The antibacterial film AF1 is, for example, disposed on one side of the first cover plate CG1 away from the first touch layer TL1, and the antibacterial film AF2 is, for example, disposed on one side of the second cover plate CG2 away from the second touch layer TL2. The antibacterial films AF1 and AF2 each include, for example, an inorganic antibacterial material, an organic antibacterial material, or a combination thereof. In this embodiment, the antibacterial films AF1 and AF2 each include silver ions, although the present invention is not limited thereto. The antibacterial films AF1 and AF2 may be formed on the first cover plate CG1 and the second cover plate CG2, respectively, by, for example, a sputtering process, although the present invention is not limited thereto. In this embodiment, the silver ions in the antibacterial films AF1 and AF2 attract bacteria or viruses through their opposite electrical properties, allowing the silver ions to destroy and kill the bacteria or viruses, thereby achieving the antibacterial effect. Based on this, by disposing the antibacterial films AF1 and AF2, the possibility that the dual-sided display 10a of this embodiment will become a vector for the spread of diseases due to frequent user contact can be reduced.

[0038] In some embodiments, the dual-sided display 10a further includes a housing S. For example, the housing S may be directly bonded to the first touch layer TL1 and the second touch layer TL2 or bonded to each other via an adhesive layer (not shown), but the present invention is not limited thereto. In some embodiments, the housing S may be fixed to the first display panel 100 and / or the second display panel 200 by disposing a filler material therebetween, but the present invention is not limited thereto. The housing S may be used, for example, to protect internal components of the dual-sided display 10a and may be used to dispose a trigger element TD and a transmission interface TI. In particular, in this embodiment, the trigger element TD may include a power switch TD1 for controlling the electronic device ED1 shown in FIG. 2 , a screen switch TD2 for the dual-sided display 10a, a touch switch TD3 for activating the first touch layer TL1 and the second touch layer TL2, and a display switch TD4 for switching the display image on the second display panel 200. Furthermore, in this embodiment, the transmission interface TI may include a high definition multimedia interface (HDMI) connection port TI1, a universal serial bus type C (USB type C) connection port TI2, a network connection port TI3, an audio connection port TI4, and a power connection port TI5, but the present invention is not limited thereto.

[0039] Referring to FIG. 2 , in this embodiment, the dual-sided display 10a further includes an electronic device ED1 and an electronic device ED2. The electronic device ED1 is coupled to the first display panel 100 and the second display panel 200, and the electronic device ED2 is coupled to the second display panel 200. Based on this, the first side 10S1 and the second side 10S2 of the dual-sided display 10a can display the same image via the electronic device ED1, or different images via the electronic device ED2. For example, when the dual-sided display 10a of this embodiment is applied to a medical display, signals can be sent to the electronic device ED1 by operating the power switch TD1, the screen switch TD2, and the touch switch TD3 to display the same screen containing shared information, diagnostic instructions, file labels, etc., on the first side 10S1 and the second side 10S2 of the dual-sided display 10a. Furthermore, signals can be sent to the electronic device ED2 by operating the display switch TD4 to display different screens, such as document processing and announcement playback, on the first side 10S1 and the second side 10S2 of the dual-sided display 10a, respectively. In this embodiment, the electronic device ED1 is an AIO host (all-in-one computer), and the electronic device ED2 is a playback box, but the present invention is not limited thereto.

[0040] Furthermore, in some embodiments, the dual-sided display 10a can be externally connected to a signal source via a high-definition multimedia interface connection port TI1 in the transmission interface TI instead of the electronic device ED1, and can be externally connected to a signal source via a universal serial bus type-C connection port TI2 in the transmission interface TI instead of the electronic device ED2, although the present invention is not limited thereto.

[0041] In this embodiment, the dual-sided display 10a may further include an image sensor IS. In some embodiments, the image sensor IS may include a camera, an RGB-IR image sensor, or other suitable sensor, but the present invention is not limited thereto. The image sensor IS may be disposed, for example, on at least one side of the first display panel 100 or the second display panel 200. In this embodiment, the image sensor IS is disposed on one side of the second display panel 200. Based on this, when the dual-sided display 10a of this embodiment is applied to a medical display, the image sensor IS may be used to take a picture of a patient for file creation or to measure the patient's temperature, but the present invention is not limited thereto.

[0042] Fig. 3 is a schematic partial cross-sectional view of a double-sided display according to another embodiment of Fig. 1A. Note that some of the symbols and descriptions in Fig. 1A also apply to Fig. 3. The same symbols indicate the same or similar components, and descriptions of the same technical content will be omitted.

[0043] Referring to FIG. 3, the main difference between the dual-sided display 10b of this embodiment and the dual-sided display 10a is that the anti-peeping element 330b in the backlight module 300b of the dual-sided display 10b is a switchable anti-peeping panel.

[0044] In detail, the anti-peeping element 330b may include, for example, a liquid crystal panel (not shown). The liquid crystal panel includes a liquid crystal layer (not shown), two transparent electrode layers (not shown) disposed on both sides of the liquid crystal layer, and two alignment layers (not shown) disposed between the liquid crystal layer and the two transparent electrode layers. By changing the voltage between the two transparent electrode layers, the light transmittance of the liquid crystal layer can be adjusted or changed, and the anti-peeping element 330b can have the effect of switching the viewing angle. Based on this, the anti-peeping element 330b can switch between a normal mode with a wide viewing angle and an anti-peeping mode with a narrow viewing angle by providing an electrical signal.

[0045] In some embodiments, the liquid crystal of the anti-peeping element 330b (switchable anti-peeping panel) is different from the liquid crystal of the second display panel 200, but the present invention is not limited thereto. In other embodiments, the liquid crystal of the anti-peeping element 330b is the same as the liquid crystal of the second display panel 200. Furthermore, in some embodiments, the width of the anti-peeping element 330b (switchable anti-peeping panel) in the direction d2 is smaller than the width of the second display panel 200 in the direction d2, but the present invention is not limited thereto. A method for measuring the width may be, for example, measuring the maximum length of the anti-peeping element 330b or the second display panel 200 in the direction d2.

[0046] Based on the above, the backlight module of the dual-sided display provided in some embodiments of the present disclosure includes an anti-peeping element disposed between the light guide plate and the second display panel. This reduces the risk of information leakage when displaying information using the second display panel. Furthermore, in the dual-sided display provided in other embodiments of the present disclosure, the surfaces adjacent to the light-emitting sides of the first cover plate and the second cover plate are each coated with an antibacterial film, thereby reducing the possibility that the dual-sided display provided in other embodiments of the present disclosure will be a vector for the spread of disease due to frequent user contact. [Industrial Applicability]

[0047] The double-sided display of the present invention can be applied to the medical field. [Explanation of symbols]

[0048] 10a, 10b: Double-sided display 10S1: 1st page 10S2:Side 2 100: 1st display panel 200: Second display panel 300a, 300b: Backlight module 310: Light guide plate 320: Light emitting element 330a, 330b: Anti-peeping element 340: First diffusion sheet 350: Second diffusion sheet 360: Third diffusion sheet 370: First prism sheet 380: Second prism sheet 390: Dual brightness enhancement film AF1, AF2: Antibacterial film AL1, AL2: Adhesive layer CG1: First cover plate CG2: Second cover plate ED1, ED2: Electronic equipment IS: Image sensor S: Housing TD: Trigger element TD1: Power switch TD2: Screen switch TD3: Touch switch TD4: Display switch TI: Transmission Interface TI1: HDMI connection port TI2: USB Type-C connection port TI3: Network connection port TI4: Audio connection port TI5: Power connection port TL1: First touch layer TL2: Second touch layer d1, d2: direction

Claims

1. 1. A dual-sided display including a first surface and a second surface opposite the first surface, a first display panel configured to display an image on the first surface; a second display panel configured to display an image on the second surface; and a backlight module disposed between the first display panel and the second display panel, the backlight module providing a light source for the first display panel and the second display panel, The backlight module comprises: A light guide plate; a light emitting element configured to provide the light source and disposed adjacent to one side of the light guide plate; an anti-peeping element configured to adjust an emission angle of display light and disposed between the light guide plate and the second display panel; Includes a double-sided display.

2. further comprising a first touch layer and a second touch layer; the first display panel is disposed between the first touch layer and the backlight module; the second display panel is disposed between the second touch layer and the backlight module; The double-sided display of claim 1 .

3. a first cover plate disposed on the first touch layer; a second cover plate disposed on the second touch layer; further comprising The covering area of ​​the first cover plate is equal to or greater than the area of ​​the first touch layer; The covering area of ​​the second cover plate is equal to or greater than the area of ​​the second touch layer; the first cover plate and / or the second cover plate include an antibacterial structure; The double-sided display of claim 2 .

4. the antimicrobial structure includes a first antimicrobial film and / or a second antimicrobial film; the first antimicrobial film is disposed on one side of the first cover plate away from the first touch layer, and the second antimicrobial film is disposed on one side of the second cover plate away from the second touch layer; The double-sided display of claim 3.

5. The backlight module comprises: a first diffusion sheet disposed between the first display panel and the light guide plate; The double-sided display of claim 1 further comprising:

6. The backlight module comprises: the light guide plate may further include a second diffusion sheet and a third diffusion sheet, the light guide plate being disposed between the second diffusion sheet and the third diffusion sheet, and the second diffusion sheet being disposed between the first diffusion sheet and the third diffusion sheet; The double-sided display of claim 5.

7. The backlight module comprises: a first prism sheet disposed between the first diffusion sheet and the second diffusion sheet; a second prism sheet disposed between the third diffusion sheet and the anti-peeping element; 7. The double-sided display of claim 6, further comprising:

8. The backlight module comprises: a dual brightness enhancement film disposed between the second prism sheet and the anti-peeping element; 8. The dual-sided display of claim 7, further comprising:

9. The anti-peeping element includes a plurality of light-blocking structures, and the angle of the dual brightness enhancement film is 90 degrees with respect to the extending direction of the light-blocking structures in the anti-peeping element.

9. The double-sided display of claim 8.

10. The anti-spy element includes a switchable anti-spy panel. The double-sided display of claim 1 .

11. the liquid crystal of the switchable anti-spy panel is different from the liquid crystal of the second display panel; The double-sided display of claim 10.

12. The liquid crystal of the switchable anti-peeping panel is the same as the liquid crystal of the second display panel. The double-sided display of claim 10.

13. The width of the switchable anti-peeping panel is smaller than the width of the second display panel. The double-sided display of claim 10.

14. further comprising an image sensor; the image sensor is disposed on at least one side of the first display panel and the second display panel; The double-sided display of claim 1 .

15. the image sensor is disposed on one side of the second display panel; 15. The double-sided display of claim 14.

16. the image sensor includes an RGB-IR image sensor; 15. The double-sided display of claim 14.

17. a first electronic device coupled to the first display panel and the second display panel; a second electronic device coupled to the second display panel; The double-sided display of claim 1 further comprising:

18. The first electronic device is an AIO host (all-in-one computer), and the second electronic device is a playback box.

18. The double-sided display of claim 17.

19. further comprising a housing; the housing is directly bonded to the first touch layer and the second touch layer; The double-sided display of claim 2 .

20. The light emitting element is an edge type light emitting element. The double-sided display of claim 1 .

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