Electronic device

Abstract

This disclosure provides an electronic device. The electronic device includes a display panel, a light control layer, a phase retardation layer, and a first linear polarizing layer. The light control layer is disposed between the display panel and the phase retardation layer. The phase retardation layer is disposed between the light control layer and the first linear polarizing layer. A first transmission direction of the first linear polarizing layer and a second transmission direction of at least a portion of the incident light passing through the phase retardation layer and incident on the first linear polarizing layer are different.

Description

electronic devices The present disclosure relates to an electronic device, and more particularly to an electronic device including a phase delay layer and having an anti-peeping function. In recent years, electronic devices have been widely used in various environments to improve the convenience of life. For example, electronic devices including display devices can be used in vehicles, portable devices, and the like. However, reflected light from ambient light hitting the electronic devices and / or metal wiring within the electronic devices can cause high levels of reflected light, which can affect the user's viewing experience, making parts of the display difficult to read, and even worse, affecting driving safety. Therefore, although existing electronic devices have gradually met their intended uses, they still do not fully meet the requirements in all aspects. Therefore, there are still some problems that need to be overcome regarding electronic devices. In some embodiments, an electronic device is provided. The electronic device includes a display panel, a light control layer, a phase retardation layer, and a first linear polarizer. The light control layer is disposed between the display panel and the phase retardation layer. The phase retardation layer is disposed between the light control layer and the first linear polarizer. Wherein, a first penetration direction of the first linear polarizer and a second penetration direction of at least a portion of the incident light that passes through the phase retardation layer and enters the first linear polarizer are different. The electronic device disclosed herein can be applied to various types of electronic devices. To make the components and advantages of the present disclosure more clearly understood, various embodiments are given below with accompanying drawings for detailed description. The following is a detailed description of the electronic devices of each embodiment of the present disclosure. It should be understood that the following description provides many different embodiments for implementing different aspects of some embodiments of the present disclosure. The specific elements and arrangements described below are only for a simple and clear description of some embodiments of the present disclosure. Of course, these are only used as examples and are not limitations on the present disclosure. In addition, similar and / or corresponding element symbols may be used in different embodiments to indicate similar and / or corresponding elements in order to clearly describe the present disclosure. However, the use of these similar and / or corresponding element symbols is only for a simple and clear description of some embodiments of the present disclosure and does not represent any correlation between the different embodiments and / or structures discussed. It should be understood that relative terms, such as "lower," "bottom," "upper," or "top," may be used in various embodiments to describe the relationship of one element to another element in the drawings. It should be understood that if the device in the drawings is flipped upside down, the element described as being on the "lower" side would become the element on the "upper" side. The embodiments of the present disclosure should be understood in conjunction with the drawings, which are considered part of the disclosure. Furthermore, when a first material layer is described as being on or over a second material layer, this may include situations where the first material layer and the second material layer are in direct contact, or where the first material layer and the second material layer are not in direct contact, that is, where one or more other material layers may be interposed between the first material layer and the second material layer. However, if the first material layer is directly on the second material layer, this means that the first material layer and the second material layer are in direct contact. Furthermore, it should be understood that the use of ordinal numbers such as "first," "second," and the like in the specification and claims to modify an element is not intended to imply any prior ordinal number for the element(s), nor does it indicate the order of one element relative to another, or the order of manufacturing methods. Such ordinal numbers are used solely to clearly distinguish a named element from another element with the same name. The claims and the specification may not use the same terms; for example, the first element in the specification may be the second element in the claims. In some embodiments of the present disclosure, terms related to joining and connecting, such as "connect," "interconnect," and "bond," unless otherwise specified, may refer to two structures being in direct contact, or may also refer to two structures not being in direct contact, with another structure disposed between the two structures. Furthermore, such terms related to connection and bonding may include situations where both structures are movable or both structures are fixed. Furthermore, the terms "electrically connected" or "electrically coupled" include any direct and indirect electrical connection means. As used herein, the terms "approximate," "about," and "substantially" generally mean within 10%, 5%, 3%, 2%, 1%, or 0.5% of a given value or range. A given quantity is an approximate quantity, meaning that even without the specific wording "about," "approximately," or "substantially," the meaning of "about," "approximately," or "substantially" is implied. The phrase "a range between a first value and a second value" means that the range includes the first value, the second value, and any values ​​therebetween. Furthermore, any two values ​​or directions used for comparison may have a certain degree of error. If a first value is equal to a second value, it implies that the first value and the second value may have an error of approximately 10%, 5%, 3%, 2%, 1%, or 0.5% between them. If the first direction is perpendicular to the second direction, the angle between the first direction and the second direction may be between 80 degrees and 100 degrees. If the first direction is parallel to the second direction, the angle between the first direction and the second direction may be between 0 degrees and 10 degrees. Certain words are used throughout the specification and claims of this disclosure to refer to specific components. It should be understood by those skilled in the art that electronic equipment manufacturers may refer to the same components by different names. This document does not intend to distinguish between components that have the same function but different names. In the following specification and claims, words such as "comprise", "contain", and "have" are open-ended words and should therefore be interpreted as meaning "including but not limited to..." Therefore, when the terms "comprise", "contain" and / or "have" are used in the description of this disclosure, they specify the existence of corresponding parts, areas, steps, operations and / or elements, but do not exclude the existence of one or more corresponding parts, areas, steps, operations and / or elements. It should be understood that the following embodiments may be implemented by replacing, reorganizing, or combining components from various different embodiments without departing from the spirit of the present disclosure. Components from various embodiments may be combined and used in any manner as long as they do not violate the spirit of the invention or conflict with it. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meanings as commonly understood by one of ordinary skill in the art. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant art and this disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined in the embodiments of this disclosure. In the present disclosure, the various directions are not limited to the three axes of the rectangular coordinate system, such as the X-axis, Y-axis, and Z-axis, and can be interpreted in a broader sense. For example, the X-axis, Y-axis, and Z-axis can be perpendicular to each other, or can represent different directions that are not perpendicular to each other, but are not limited to this. For ease of explanation, hereinafter, the X-axis direction is the first direction D1 (length direction), the Y-axis direction is the second direction D2 (width direction), and the Z-axis direction is the third direction D3 (height direction). In some embodiments, the cross-sectional schematic diagrams described herein are cross-sectional schematic diagrams observed in the YZ plane. In the present disclosure, the electronic device may include a display device, a backlight device, an antenna device, a sensing device, an anti-peeping device, or a titling device, but is not limited thereto. The electronic device may be a foldable or flexible electronic device. The display device may be a non-luminous display device or a luminous display device. The antenna device may be a liquid crystal antenna device or a non-liquid crystal antenna device, and the sensing device may be a sensing device that senses capacitance, light, heat, or ultrasound, but is not limited thereto. The electronic components may include passive components and active components, such as capacitance, resistance, inductance, diodes, transistors, etc. The diode may include a light-emitting diode or a photodiode. The light-emitting diode may include, for example, an organic light-emitting diode (OLED), a sub-millimeter light-emitting diode (mini LED), a micro LED, or a quantum dot LED, but is not limited thereto. The splicing device may be, for example, a display splicing device or an antenna splicing device, but is not limited thereto. It should be noted that the electronic device may be any combination of the aforementioned, but is not limited thereto. The following description of the present disclosure will be based on an electronic device including a display device, but the present disclosure is not limited thereto. Furthermore, the electronic device may be rectangular, circular, polygonal, have curved edges, or other suitable shapes. The electronic device may have peripheral systems such as a processing system, a drive system, a control system, a light source system, and a shelf system to support the electronic device. In some embodiments, additional components may be added to the electronic device of the present disclosure. In some embodiments, some components of the electronic device of the present disclosure may be replaced or omitted. In some embodiments, additional operating steps may be provided before, during, and / or after the method for manufacturing the electronic device. In some embodiments, some of the operating steps described may be replaced or omitted, and the order of some of the operating steps described may be interchangeable. In addition, it should be understood that some of the steps described may be replaced or deleted for other embodiments of the method. Furthermore, in the present disclosure, the number and size of each element in the drawings are for illustration only and are not intended to limit the scope of the present disclosure. In the present disclosure, a polarizer (i.e., a polarizing layer) is an optical element that can convert unpolarized light into polarized light, such as linearly polarized light. In some embodiments, when the direction of the transmission axis of the polarizing layer is described as the first direction D1 (X-axis direction), light with a transmission direction (polarization direction) parallel to the first direction D1 can pass through the polarization axis, but the present disclosure is not limited to this. In the figures of the present disclosure, the transmission direction of the polarizing layer is shown on the polarizing layer (e.g., the first linear polarizing layer 40 and the second linear polarizing layer 60). In some embodiments, as shown in Figure 1, the first linear polarizing layer 40 is shown as a dot to indicate that the transmission direction of the first linear polarizing layer 40 is parallel to the first direction D1. In some embodiments, as shown in Figure 8, the first linear polarizing layer 40 is shown as a double arrow to indicate that the transmission direction of the first linear polarizing layer 40 is parallel to the second direction D2. In some embodiments, when describing light passing through the phase retarder, the transmission direction of the light is the polarization direction. In the diagrams of the present disclosure, the transmission direction of light can be indicated on the light. In some embodiments, as shown in FIG. 1 , a double arrow with a dot in the middle on light L indicates that light L is unpolarized light, a dot on light L indicates that light L is linearly polarized light with a transmission direction in a first direction D1, a double arrow on light L indicates that light L is linearly polarized light with a transmission direction in a second direction D2, a clockwise arrow on light L indicates that light L is left-handed circularly polarized light or left-handed elliptically polarized light, and a counterclockwise arrow on light L indicates that light L is right-handed circularly polarized light or right-handed elliptically polarized light, but the present disclosure is not limited to this. In some embodiments, as shown in FIG. 4 , a double arrow on light L at an angle with the second direction D2 indicates that light L is linearly polarized light with a transmission direction at the angle with the second direction D2. Accordingly, in the drawings of the present disclosure, whether the light L can pass through the polarizing layer can be determined based on the penetration direction of the polarizing layer and the penetration direction of the light L. In the drawings of the present disclosure, alignment directions may be indicated on alignment layers (e.g., first alignment layer 52 and second alignment layer 56 in FIG. 5 ). In some embodiments, as shown in FIG. 5 , a rightward single arrow on the first alignment layer 52 indicates that the alignment direction of the first alignment layer 52 is toward a second direction D2, and a leftward single arrow on the second alignment layer 56 indicates that the alignment direction of the second alignment layer 56 is toward a direction opposite to the second direction D2. In this disclosure, the term "privacy" means a light transmittance of less than 20%, 10%, 8%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, or lower, rendering the image unobservable. In this disclosure, "reflectance" is defined as the percentage of incident optical power reflected from a material within a given wavelength range. In this disclosure, "low reflectivity" means a reflectance of less than 10%, 8%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, or lower. Furthermore, it should be understood that according to the disclosed embodiments, optical properties such as viewing angle light distribution, phase retardation, polarization states such as linear polarization, elliptical polarization, and circular polarization, and reflectivity can be measured using a viewing angle light distribution diagram, an axostep, a spectrophotometer (CM-700d), or other suitable methods. Specifically, in some embodiments, a viewing angle light distribution diagram can be used to obtain visual effects at all viewing angles, thereby measuring the privacy protection effect. In some embodiments, a polarimeter can be used to measure the polarization properties of each layer. In some embodiments, a spectrophotometer can be used to measure the reflectivity of an electronic device. Referring to FIG. 1 , a cross-sectional schematic diagram of an electronic device 1 is shown according to some embodiments of the present disclosure. As shown in FIG. 1 , the electronic device 1 includes a display panel 10, a light control layer 20, a phase retarder layer 30, and a first linear polarizer layer 40. In some embodiments, the display panel 10 may include or be an organic light-emitting display panel or an inorganic light-emitting display panel. In some embodiments, the display panel 10 may include or be a self-luminous display panel. As shown in FIG1 , in some embodiments, the light control layer 20 is disposed between the display panel 10 and the phase retarder layer 30. In some embodiments, the light control layer 20 can be used to adjust the viewing angle of the display panel 10 to achieve a passive privacy protection effect. As shown in FIG1 , in some embodiments, a phase retarder layer 30 may be disposed between the light control layer 20 and the first linear polarizer layer 40 . In some embodiments, the phase retarder layer 30 can change the polarization state of light. Therefore, the present disclosure can reduce reflectivity by disposing the phase retarder layer 30. In some embodiments, the first linear polarizing layer 40 may be disposed on the phase retarder layer 30. In some embodiments, the first linear polarizing layer 40 may include triacetate fiber (TAC), polyvinyl alcohol (PVA), other suitable polarizing materials, or a combination thereof, but the present disclosure is not limited thereto. In some embodiments, as shown in FIG1 , ambient light (light L) may be incident on the electronic device 1. In the present disclosure, the incident direction of the light may be a direction toward the display panel 10. Specifically, the ambient light (light L) may be incident on the first linear polarizing layer 40, the phase delay layer 30, the light control layer 20, and the display panel 10 in the electronic device 1 according to the incident direction. Moreover, the light L may also be reflected by the above-mentioned elements according to the reflection direction. In the present disclosure, the reflection direction of the light may be a direction away from the display panel 10. As shown in FIG1 , the light reflected by the display panel 10 may pass through the light control layer 20 and the phase delay layer 30 and then be incident on the first linear polarizing layer 40. According to some embodiments, the optical layers in the electronic device 1 may be appropriately designed. For example, the first transmission direction (e.g., first direction D1) of the first linear polarizing layer 40 and the second transmission direction (e.g., second direction D2) of at least a portion of the light (labeled as light L1) that passes through the phase retarder layer 30 and enters the first linear polarizing layer 40 may be different. In this way, at least a portion of the light L1 is unable to pass through the first linear polarizing layer 40 and is blocked by the first linear polarizing layer 40, thereby reducing the reflectivity of ambient light. In some embodiments, the second transmission direction of the light that passes through the phase retarder layer 30 and enters the first linear polarizing layer 40 may be perpendicular to the first transmission direction of the first linear polarizing layer 40. In this way, the light L1 is substantially unable to pass through the first linear polarizing layer 40, thereby reducing the reflectivity of ambient light. According to some embodiments, the light L1 is a portion of the reflected light after the ambient light is reflected by the electronic device 1. In some embodiments, the phase retardation layer 30 may include a quarter wave plate to produce a phase difference of one quarter wavelength (λ). In some embodiments, the phase retardation layer 30 may further include a half wave plate to produce a phase difference of one half wavelength, and the half wave plate is disposed between the first linear polarizing layer 40 and the quarter wave plate. In other embodiments, the phase retardation layer 30 may further include at least two half wave plates, and at least two half wave plates are disposed between the first linear polarizing layer 40 and the quarter wave plate. In some embodiments, the phase retardation layer 30 may include a plurality of sublayers (such as a first sublayer 32 and a second sublayer 34), and at least one of the plurality of sublayers is a quarter wave plate. In some embodiments, the sublayer closest to the light control layer 20 among the plurality of sublayers is a quarter wave plate. In some embodiments, the plurality of sublayers may be 2, 3, 4, 5, 10 or other natural number layers, but the present disclosure is not limited thereto. According to some embodiments, the provision of a half-wave plate can uniformly reduce the reflectivity of light within a given wavelength range, thereby alleviating chromatic dispersion. Furthermore, according to some embodiments, the provision of a phase retarder layer, such as a specific combination of a half-wave plate and a quarter-wave plate, can reduce chromatic dispersion, thereby improving the optical performance of the electronic device. In some embodiments, as shown in FIG. 1 , the first linear polarizing layer 40 transmits light in a first direction D1, the phase retarder 30 is a quarter-wave plate, and unpolarized light L is incident on the electronic device 1. In some embodiments, the light L is ambient light. As shown in Figure 1, light L (such as ambient light) is incident on the electronic device 1 according to the incident direction. After the light L passes through (passes through) the first linear polarizing layer 40, since the penetration direction of the first linear polarizing layer 40 is the first direction D1, the penetration direction of the light L is the first direction D1. Then, after the light L passes through the phase delay layer 30, since the phase delay layer 30 is a quarter-wave plate, the penetration direction of the light L is left-handed circular polarization. Then, the light L passes through the light control layer 20, and the light control layer 20 does not change the penetration direction of the light L, so the light L is still left-handed circular polarization. Afterwards, the light L is reflected by the electronic device 1 according to the reflection direction. In detail, the light L is incident on the top surface of the display panel 10 and reflected from the top surface of the display panel 10. Since the light L is reflected from the display panel 10, the phase difference of the reflected light changes by 180 degrees, so the penetration direction of the reflected light reflected by the display panel 10 is right-handed circular polarization. Continuing with the above, as shown in FIG1 , the reflected light continues to pass through the light control layer 20 without changing its transmission direction, so the reflected light remains right-handed circularly polarized after passing through the light control layer 20. Next, after the reflected light passes through the phase retarder layer 30, since the phase retarder layer 30 is a quarter-wave plate, the transmission direction of the reflected light (denoted as light L1) passing through the phase retarder layer 30 is a second direction D2. According to some embodiments, when the first transmission direction of the first linear polarizing layer 40 is the first direction D1, and the second transmission direction of at least a portion of the incident light (light L1) that passes through the phase retarder layer 30 and enters the first linear polarizing layer 40 is the second direction D2, and when the first transmission direction and the second transmission direction are different, at least a portion of the light L1 cannot pass through the first linear polarizing layer 40, thereby reducing the reflectivity. Specifically, even if light L enters the electronic device 1 , the phase retardation layer 30 adjusts the phase difference of the reflected light, so the user cannot see the light L1 emitted from the first linear polarizing layer 40 or can only see the partially blocked light L1 , thereby reducing the reflectivity of the electronic device 1 . In the following, the same or similar element numbers will not be repeated. 2 , which is a cross-sectional schematic diagram showing an electronic device 1 according to some embodiments of the present disclosure. In some embodiments, the display panel 10 may further include a substrate 12, a transistor array 14, a light-emitting layer 16, and a cover layer 18. In some embodiments, the substrate 12 may include or be a wafer, chip, glass, quartz, sapphire, ceramic, polyimide (PI), polycarbonate (PC), polyethylene terephthalate (PET), polypropylene (PP), other suitable substrates, or combinations thereof, but the present disclosure is not limited thereto. The substrate 12 may be a rigid substrate or a flexible substrate, but the present disclosure is not limited thereto. In some embodiments, the transistor array 14 may be disposed on the substrate 12. In some embodiments, the transistor array 14, such as a thin film transistor (TFT) array, may be disposed on the substrate 12 to control the light-emitting layer 16. In some embodiments, the transistor array 14 may include driving transistors, switching transistors, other suitable transistors, or a combination thereof, but the present disclosure is not limited thereto. In some embodiments, the light-emitting layer 16 may be disposed on the transistor array 14. In some embodiments, the light-emitting layer 16 may include a light-emitting material. In some embodiments, the light-emitting material may include liquid crystals, quantum dots, organic light-emitting diodes, sub-millimeter light-emitting diodes, micro light-emitting diodes, quantum dot light-emitting diodes, phosphors, fluorophores, other suitable light-emitting materials, or a combination thereof, but the present disclosure is not limited thereto. In detail, the transistors in the transistor array 14 may be electrically connected to the light-emitting units in the light-emitting layer 16. According to some embodiments, the light-emitting units may include liquid crystal units, quantum dot units, organic light-emitting diode units, sub-millimeter light-emitting diode units, micro light-emitting diode units, quantum dot light-emitting diode units, or a combination thereof. According to some embodiments, the light-emitting units may include self-luminous light-emitting units, for example, organic light-emitting diode units or inorganic light-emitting diode units. In some embodiments, a cover layer 18 may be disposed on the light-emitting layer 16 to protect the layers below the cover layer 18, such as the light-emitting layer 16. In some embodiments, the cover layer 18 may include or be glass, polycarbonate, polyethylene terephthalate, polypropylene, other suitable materials, or a combination of the foregoing materials, but the present disclosure is not limited thereto. In some embodiments, a color filter (not shown) may be further disposed between the light-emitting layer 16 and the cover layer 18. In some embodiments, an electrode layer (not shown) may be further disposed on the light-emitting layer 16 to drive the light-emitting layer 16. In some embodiments, the polarizing layer may be omitted from the display panel 10. In some embodiments, the light control layer 20 may further include a first carrier plate 21, a second carrier plate 22, and a light-shielding portion 23 and a light-transmitting portion 24 disposed between the first carrier plate 21 and the second carrier plate 22. In some embodiments, the light-shielding portion 23 and the light-transmitting portion 24 may be staggered along the second direction D2. In other words, light can pass through the light-transmitting portion 24 of the light control layer 20, and the light-shielding portion 23 of the light control layer 20 blocks the light, but the light control layer 20 does not substantially change the polarization direction of the light. In some embodiments, a plurality of light-shielding portions 23 may be provided. In some embodiments, when viewed in a top view, for example, when viewed on a plane defined by the first direction D1 and the second direction D2, each of the plurality of light-shielding portions 23 may extend along a first transmission direction (e.g., the first direction D1), and the plurality of light-shielding portions 23 may be spaced apart in a second transmission direction (e.g., the second direction D2). According to some embodiments, the light control layer 20 has a light-shielding portion 23 extending along the first transmission direction D1. In some embodiments, the light-shielding portion 23 may be strip-shaped and disposed between the first carrier plate 21 and the second carrier plate 22. In other words, in some embodiments, a plurality of light-transmitting portions 24 may be provided. In some embodiments, when viewed from above, for example, in a plane defined by the first direction D1 and the second direction D2, each of the plurality of light-transmitting portions 24 may extend along a first transmissive direction (e.g., the first direction D1), and the plurality of light-transmitting portions 24 may be arranged at intervals in the second transmissive direction (e.g., the second direction D2). In other words, the light-transmitting portions 24 may be strip-shaped. In some embodiments, the first carrier 21 and / or the second carrier 22 may include or be glass, polyimide (PI), polyethylene terephthalate (PET), other suitable materials, or a combination of the foregoing materials, but the present disclosure is not limited thereto. In some embodiments, the light-shielding portion 23 may include or be a polarizing material or a black material. In some embodiments, the light-transmitting portion 24 may include or be a transparent material. In some embodiments, the transparent material may include polycarbonate (PC), silicone resin (Polymerized siloxanes), polymethyl methacrylate (PMMA), cyclo-olefin polymer (COP), cyclo-olefin copolymer (COC), other suitable transparent materials, or a combination of the foregoing materials, but the present disclosure is not limited thereto. FIG2 shows light rays L101-L105 emitted from the display panel 10 at different angles. In some embodiments, the light rays L101-L105 emitted from the display panel 10 are either unpolarized or polarized. After passing through the light-transmitting portion 24 of the light control layer 20, the light rays L101-L105 maintain their transmission direction. Subsequently, after passing through the phase retarder layer 30, the light rays L101-L105 remain unpolarized. After passing through the first linear polarizing layer 40, the light rays L101-L105 transmit in the first direction D1. In some embodiments, the provision of the light control layer 20 can provide an electronic device with a privacy-preventing function. Specifically, as shown in Figure 2, light beams L104 and L105 are blocked or weakened by the light-shielding portion 23 of the light control layer 20, while the front-view emission of light beams L101-L103 remains unaffected. In other words, the light control layer 20 reduces side-view (wide-angle) emission, thereby achieving a passive privacy protection effect. Furthermore, as described in Figure 1 above, electronic device 1 can achieve a reduced reflected light effect while still maintaining privacy protection. Referring to FIG. 3 , a partial cross-sectional schematic diagram of the electronic device 1 is shown according to some embodiments of the present disclosure. FIG. 3 shows the path of light, which is incident on each layer in the electronic device 1 and then reflected by each layer in the electronic device 1. In detail, the incident direction of the light is, for example, along the direction from the first linear polarizing layer 40 toward the display panel 10. The reflection direction of the light is, for example, along the direction from the display panel 10 toward the first linear polarizing layer 40. In some embodiments, light L (for example, ambient light) is incident on the first linear polarizing layer 40 and is reflected by the first linear polarizing layer 40 to generate reflected light R40, and the light L continues to be incident on the phase delay layer 30 and is reflected by the phase delay layer 30 to generate reflected light R30, and then the light L continues to be incident on the light control layer 20 and is reflected by the light control layer 20 to generate reflected light R20, and then the light L is incident on the display panel 10 and is reflected by the display panel 10 to generate reflected light R10. As shown in FIG. 3 , continuing from the above, the transmission direction of the first linear polarizing layer 40 is the first direction D1 , the phase retardation layer 30 is a quarter wave plate, and the light L is unpolarized light as an example for description. In some embodiments, as shown in FIG. 3 , the light L incident on the electronic device 1 may be ambient light, and the light L travels in a first direction D1 and a second direction D2. In some embodiments, because the first linear polarizing layer 40 travels in the first direction D1, the light passing through the first linear polarizing layer 40 travels in the first direction D1, and the reflected light R40 reflected by the first linear polarizing layer 40 travels in the first direction D1. Consequently, a portion of the light L incident on the first linear polarizing layer 40 passes through the first linear polarizing layer 40 (and continues to travel to the phase retarder layer 30 ), while a portion of the light incident on the first linear polarizing layer 40 is reflected by the first linear polarizing layer 40 as reflected light R40. In some embodiments, as shown in FIG. 3 , continuing with the above, light incident on the phase retarder 30 in the first direction D1 continues to be incident on the phase retarder 30. Because the phase retarder 30 is a quarter-wave plate, the light passing through the phase retarder 30 is left-handed circularly polarized. Furthermore, after the light incident on the phase retarder 30 is reflected by the phase retarder 30 (with a phase difference of 180 degrees), the reflected light R30 is right-handed circularly polarized. Subsequently, after the reflected light R30 passes through the first linear polarizing layer 40, the reflected light R30 is returned to the first direction D1. Thus, a portion of the light incident on the phase retarder 30 passes through the phase retarder 30 (and continues to be incident on the light control layer 20), while a portion of the light incident on the phase retarder 30 is reflected by the phase retarder 30 as reflected light R30, which can then be emitted from the first linear polarizing layer 40. In some embodiments, as shown in FIG3 , because the light control layer 20 can change the viewing angle of the display panel 10 without changing the light's transmission direction, the light that continues to enter the light control layer 20 from the phase retarder layer 30 and passes through the light control layer 20 has a transmission direction of left-handed circular polarization. Furthermore, after the incident light is reflected by the light control layer 20 (with a phase difference of 180 degrees), the transmission direction of the reflected light R20 becomes right-handed circular polarization. Subsequently, after the reflected light R20 passes through the phase retarder layer 30 again, the transmission direction of the reflected light R20 changes to a second direction D2. Because the transmission direction of the reflected light R20 (second direction D2) is different (e.g., perpendicular) from the transmission direction of the first linear polarizer 40 (first direction D1), the reflected light R20 cannot pass through the first linear polarizer 40 and is therefore blocked. Alternatively, according to one embodiment, the amount of reflected light R20 that passes through the first linear polarizer 40 may be reduced (e.g., the light intensity is reduced, and / or the luminous flux is reduced). Accordingly, a portion of the light incident into the light control layer 20 passes through the light control layer 20 (and continues to be incident into the display panel 10 ), and a portion of the light incident into the light control layer 20 is reflected by the light control layer 20 as reflected light R20 . In some embodiments, as shown in FIG3 , the light incident on the display panel 10 from the light control layer 20 continues to pass through the display panel 10 in a left-handed circularly polarized direction. Furthermore, after the light incident on the display panel 10 is reflected by the display panel 10 (with a phase difference of 180 degrees), the reflected light R10 passes through the display panel 10 in a right-handed circularly polarized direction. After the reflected light R10 passes through the light control layer 20 in the reflection direction, the reflected light R10 passes through the display panel 10 in a right-handed circularly polarized direction. After the reflected light R10 passes through the phase retarder layer 30, the reflected light R10 passes through the second direction D2. Because the reflected light R10's transmission direction (second direction D2) is different (e.g., perpendicular) to the transmission direction (first direction D1) of the first linear polarizing layer 40, the reflected light R10 cannot pass through the first linear polarizing layer 40 and is blocked. Alternatively, according to one embodiment, the amount of reflected light R10 passing through the first linear polarizing layer 40 may be reduced (e.g., the light intensity is reduced, and / or the luminous flux is reduced). Specifically, as shown in FIG3 , the incident light (light L1) that passes through the phase retarder layer 30 and enters the first linear polarizing layer 40 can be divided into three parts: reflected light R30, which can continue to be emitted from the first linear polarizing layer 40; reflected light R20; and reflected light R10. According to some embodiments, the first transmission direction (first direction D1) of the first linear polarizing layer 40 and the second transmission direction (second direction D2) of at least a portion of the incident light (light L1) that passes through the phase retarder layer 30 and enters the first linear polarizing layer 40 (e.g., reflected light R10 and R20) are different. Specifically, of the ambient light reflected by the electronic device 1, the transmission direction of at least a portion of the incident light (light L1) that passes through the phase retarder layer 30 and enters the first linear polarizing layer 40 (reflected light R10 and R20) is different from the first transmission direction D1 of the first linear polarizing layer 40. That is, the second transmission direction D2 of reflected light R10 and R20 is different from the first transmission direction D1. Accordingly, when a user views the device from a top-down perspective, for example, from a plane defined by the first direction D1 and the second direction D2, the user can observe reflected light R40 and R30, but cannot observe reflected light R10 and R20 (because they are blocked by the first linear polarizing layer 40). Thus, according to some embodiments, the design of the optical layer in the electronic device can achieve a low reflectivity effect. According to some embodiments, as shown in FIG3 , the transmission direction of the first linear polarizing layer 40 is a first transmission direction (first direction D1). Light incident on the phase retarder layer 30 travels as follows: the light continues to be incident on the light control layer 20, passes through the light control layer 20, is reflected by the light control layer 20, and the reflected light R20 then passes through the phase retarder layer 30, where the transmission direction of the reflected light R20 changes to a second direction D2. After passing through the light control layer 20, the light can continue to be incident on the display panel 10, passes through the display panel 10, is reflected by the display panel 10, and the reflected light R10 passes through the light control layer 20 and the phase retarder layer 30, where the transmission direction of the reflected light R10 changes to the second direction D2. With this design, the transmission direction of reflected light R20 (second direction D2) can be different from the transmission direction of the first linear polarizing layer 40 (first direction D1), and the transmission direction of reflected light R10 (second direction D2) can be different from the transmission direction of the first linear polarizing layer 40 (first direction D1). This reduces the amount of reflected light R20 and R10 passing through the first linear polarizing layer 40, thereby reducing the reflection of ambient light. Consequently, the amount of ambient light reflected by the electronic device can be reduced, thereby reducing the reflection of ambient light. Referring to FIG. 4 , a partial cross-sectional schematic diagram of an electronic device 2 is shown according to some embodiments of the present disclosure. In some embodiments, as shown in FIG. 4 , light L incident on the electronic device 2 may be ambient light, and the light L travels in a first direction D1 and a second direction D2. In some embodiments, the phase retarder layer 30 includes a first sublayer 32 and a second sublayer 34, and the light L is unpolarized light. In some embodiments, the first sublayer 32 is a quarter-wave plate, and the second sublayer 34 is a half-wave plate. According to some embodiments, at least one of the plurality of sublayers may be a quarter-wave plate. For example, the first sublayer 32 may be a quarter-wave plate. In some embodiments, FIG. 4 shows the path of light, where the light is incident on each layer in the electronic device 2 and then reflected by each layer in the electronic device 2. In detail, the direction of incidence of the light is, for example, along the direction from the first linear polarizing layer 40 toward the display panel 10. The direction of reflection of the light is, for example, along the direction from the display panel 10 toward the first linear polarizing layer 40. The light L incident on the electronic device 2 may be ambient light, and the penetration direction of the light L is the first direction D1 and the second direction D2. The penetration direction of the first linear polarizing layer 40 is the first direction D1. In some embodiments, after the light L passes through the first linear polarizing layer 40, the penetration direction of the light is the first direction D1, and the penetration direction of the reflected light R40 reflected by the first linear polarizing layer 40 is the first direction D1. Accordingly, a portion of the light L incident on the first linear polarizing layer 40 passes through the first linear polarizing layer 40 (and continues to be incident on the second sub-layer 34 ), and a portion of the light L incident on the first linear polarizing layer 40 is reflected by the first linear polarizing layer 40 as reflected light R40 . In some embodiments, as shown in FIG. 4 , because the second sublayer 34 of the half-wave plate provides a half-wavelength phase difference, light incident on the second sublayer 34 in the first direction D1 continues to be incident on the second sublayer 34. The light passing through the second sublayer 34 has a 60-degree linear polarization direction. Furthermore, after the light incident on the second sublayer 34 is reflected by the second sublayer 34, the reflected light R34 has a transmission direction in the first direction D1. Subsequently, after the reflected light R34 passes through the first linear polarizing layer 40, the reflected light R34 still has a transmission direction in the first direction D1. Accordingly, a portion of the light incident on the second sublayer 34 passes through the second sublayer 34 (and continues to be incident on the first sublayer 32), and a portion of the light incident on the second sublayer 34 is reflected by the second sublayer 34 as reflected light R34. In some embodiments, as shown in FIG4 , the light that continues to be incident on the first sub-layer 32 and passes through the first sub-layer 32 has a transmission direction of left-handed circular polarization. Furthermore, after the light incident on the first sub-layer 32 is reflected by the first sub-layer 32 (with a phase difference of 180 degrees), the transmission direction of the reflected light R32 is right-handed circular polarization. Then, after the reflected light R32 passes through the second sub-layer 34, the transmission direction of the reflected light R32 becomes negative 30-degree linear polarization. Then, after the reflected light R32 passes through the first linear polarizing layer 40, the transmission direction of the reflected light R32 becomes the first direction D1. Then, after the reflected light R34 passes through the first linear polarizing layer 40 again, the transmission direction of the reflected light R34 remains in the first direction D1. Accordingly, a portion of the light incident on the first sub-layer 32 passes through the first sub-layer 32 (and continues to be incident on the light control layer 20), and a portion of the light incident on the first sub-layer 32 is reflected by the first sub-layer 32 as reflected light R32. In some embodiments, as shown in FIG. 4 , the light incident on the light control layer 20 continues to be incident on the first sub-layer 32, and the light passing through the light control layer 20 has a transmission direction of left-handed circular polarization. Furthermore, after the light incident on the light control layer 20 is reflected by the light control layer 20 (with a phase difference of 180 degrees), the transmission direction of the reflected light R20 becomes right-handed circular polarization. Then, after the reflected light R20 passes through the first sub-layer 32, the transmission direction of the reflected light R20 becomes negative 30-degree linear polarization. After the reflected light R20 passes through the second sub-layer 34, the transmission direction of the reflected light R20 changes to a second direction D2. Because the transmission direction of the reflected light R20 is different from the transmission direction of the first linear polarizing layer 40 (e.g., perpendicular), the reflected light R20 cannot pass through the first linear polarizing layer 40 and is therefore blocked. Alternatively, according to one embodiment, the amount of reflected light R20 passing through the first linear polarizing layer 40 may be reduced (e.g., the light intensity is reduced, and / or the luminous flux is reduced). Accordingly, a portion of the light incident into the light control layer 20 passes through the light control layer 20 (and continues to be incident into the display panel 10 ), and a portion of the light incident into the light control layer 20 is reflected by the light control layer 20 as reflected light R20 . In some embodiments, as shown in FIG. 4 , the light incident on the display panel 10 from the light control layer 20 continues to pass through the display panel 10 in a left-handed circularly polarized direction. Furthermore, after the light incident on the display panel 10 is reflected by the display panel 10 (with a phase difference of 180 degrees), the reflected light R10 passes through the display panel 10 in a right-handed circularly polarized direction. After the reflected light R10 passes through the light control layer 20, the reflected light R20 passes through the right-handed circularly polarized direction. After the reflected light R10 passes through the first sub-layer 32, the reflected light R10 passes through the negative 30-degree linear polarized direction. After the reflected light R10 passes through the second sub-layer 34, the reflected light R20 passes through the second direction D2. Because the reflected light R10 passes through a different direction (e.g., perpendicular) than the first linear polarizing layer 40, the reflected light R10 cannot pass through the first linear polarizing layer 40 and is therefore blocked. Alternatively, according to one embodiment, the amount of reflected light R10 passing through the first linear polarizing layer 40 may be reduced (e.g., the light is weakened, the light intensity is reduced, and / or the luminous flux is reduced). Specifically, as shown in FIG4 , the second transmission direction (e.g., second direction D2) of at least a portion of the incident light (labeled as light L1) (e.g., reflected light R10 and R20) that passes through the phase retarder layer 30 and enters the first linear polarizing layer 40 is different from the first transmission direction (e.g., first direction D1) of the first linear polarizing layer 40. Accordingly, when a user observes from a top-down direction, for example, on a plane defined by the first direction D1 and the second direction D2, the user can observe reflected light R40, R34, and R32, but cannot observe reflected light R10 and R20 (because they are blocked by the first linear polarizing layer 40). Thus, according to some embodiments, a low reflectivity effect can be achieved through the design of the optical layer in the electronic device. 5 and 6 , which are schematic cross-sectional views and partial cross-sectional views of an electronic device 3 according to some embodiments of the present disclosure. In some embodiments, the electronic device 1 may include a viewing angle switching structure SS, which may include a first linear polarizing layer 40, a liquid crystal cell 50, and a second linear polarizing layer 60. In some embodiments, the liquid crystal cell 50 is disposed on the first linear polarizing layer 40, and the second linear polarizing layer 60 is disposed on the liquid crystal cell 50. In some embodiments, the liquid crystal cell 50 is disposed between the first linear polarizing layer 40 and the second linear polarizing layer 60. In some embodiments, the viewing angle switching structure SS may be considered an active privacy unit. In some embodiments, the viewing angle switching structure SS may be selectively activated or deactivated to switch between a privacy mode and a sharing mode of the electronic device 3. In some embodiments, the material of the second linear polarizing layer 60 can be the same as or different from the material of the first linear polarizing layer 40. In some embodiments, the transmission direction of the first linear polarizing layer 40 and / or the second linear polarizing layer 60 can be selected based on the type of liquid crystal cell 50. In some embodiments, the transmission directions of the first linear polarizing layer 40 and the second linear polarizing layer 60 can be the same or different. For example, the transmission directions of the first linear polarizing layer 40 and the second linear polarizing layer 60 can be the same or perpendicular to each other. As shown in FIG. 5 , in some embodiments, a liquid crystal cell 50 may include a first alignment layer 52, a liquid crystal layer 54, and a second alignment layer 56. In some embodiments, the first alignment layer 52 and the second alignment layer 56 each have an alignment axis, and the orientation of liquid crystal molecules 55 in the liquid crystal layer 54 is adjusted according to the orientation of the alignment axis. In some embodiments, the first alignment layer 52 is closer to the display panel 10 than the second alignment layer 56. In some embodiments, the orientation of the first alignment layer 52 and the second alignment layer 56 is adjusted according to the type of liquid crystal molecules 55. In some embodiments, the first alignment layer 52 and / or the second alignment layer 56 may be or include polyimide (PI), but the present disclosure is not limited thereto. In some embodiments, the liquid crystal layer 54 may include a plurality of liquid crystal molecules 55. In some embodiments, the liquid crystal molecules 55 may be twisted nematic liquid crystal (TN) molecules, electrically controlled birefringence (ECB) liquid crystal molecules, vertical alignment (VA) liquid crystal molecules, hybrid liquid crystal molecules, dye liquid crystals, or other suitable liquid crystal molecules, but the present disclosure is not limited thereto. In some embodiments, the liquid crystal cell 50 may further include a first substrate (not shown), a first electrode (not shown), a second electrode (not shown), and a second substrate (not shown). The first and second substrates may be rigid or flexible substrates. For specific examples, reference may be made to the example of substrate 12 described above. In some embodiments, the first substrate may be disposed on the first linear polarizing layer 40, the first electrode may be disposed on the first substrate, the first alignment layer 52 may be disposed on the first electrode, the liquid crystal layer 54 may be disposed on the first alignment layer 52, the second alignment layer 56 may be disposed on the liquid crystal layer 54, the second electrode may be disposed on the second alignment layer 56, the second substrate may be disposed on the second electrode, and the second linear polarizing layer 60 may be disposed on the second substrate. In some embodiments, the first and second electrodes are used to apply a voltage to cause the liquid crystal molecules 55 in the liquid crystal layer 54 disposed between the first and second electrodes to rotate. In some embodiments, the first substrate and / or the second substrate may be or may include a glass substrate, but the present disclosure is not limited thereto. In some embodiments, the first electrode and the second electrode may be or may include a conductive material. In some embodiments, the first electrode and the second electrode may be a transparent conductive material, such as indium tin oxide (ITO), but the present disclosure is not limited thereto. In some embodiments, the conductive material may include copper (Cu), aluminum (Al), molybdenum (Mo), tungsten (W), gold (Au), chromium (Cr), nickel (Ni), platinum (Pt), titanium (Ti), silver (Ag), alloys thereof, other suitable conductive materials, or combinations of the foregoing conductive materials, but the present disclosure is not limited thereto. In some embodiments, an optically clear adhesive (OCA), an optically clear resin (OCR), other suitable intermediary materials, or combinations of the foregoing may be further provided, but the present disclosure is not limited thereto. As shown in FIG. 5 , in some embodiments, OCA, OCR, other suitable intermediate materials, or a combination thereof may be disposed between the display panel 10 and the light control layer 20 , between the light control layer 20 and the phase delay layer 30 , and / or between the phase delay layer 30 and the first linear polarizing layer 40 , but the present disclosure is not limited thereto. In some embodiments, as shown in Figures 5 and 6, the alignment direction of the first alignment layer 52 is the second direction D2, the alignment direction of the second alignment layer 56 is the direction opposite to the second direction D2, the liquid crystal molecules 55 are ECB liquid crystal molecules, the transmission direction of the first linear polarizing layer 40 and the second linear polarizing layer 60 is the first direction D1, and the light L is incident on the electronic device 3 as an example for description. Specifically, referring to Figures 5 and 6 , the light L incident on the electronic device 3 may be ambient light, and the light L travels in a first direction D1 and a second direction D2. After passing through the viewing angle switching structure SS, the light L travels in the first direction D1. Furthermore, the reflected light R60 reflected by the second linear polarizing layer 60, the reflected light R50 reflected by the liquid crystal cell 50, and the reflected light R40 reflected by the first linear polarizing layer 40 all travel in the first direction D1. Next, as shown in FIG6 , after the light passes through the phase retarder layer 30, it is transmitted in a left-handed circularly polarized direction. Furthermore, the reflected light R30 reflected by the phase retarder 30 is transmitted in a right-handed circularly polarized direction. After the reflected light R30 passes through the view-switching structure SS, it is transmitted in the first direction D1. Then, as shown in FIG6 , the light passes through the light control layer 20 without changing its transmission direction, so the light remains left-handed circularly polarized. Furthermore, the transmission direction of the reflected light R20 reflected by the light control layer 20 is right-handed circularly polarized. Then, after the reflected light R20 passes through the phase retardation layer 30, the transmission direction of the reflected light R20 is the second direction D2. Because the transmission direction of the reflected light R20 is perpendicular to the transmission direction of the first linear polarizing layer 40, the reflected light R20 cannot pass through the first linear polarizing layer 40 and may be blocked. Alternatively, according to one embodiment, the amount of reflected light R20 passing through the first linear polarizing layer 40 may be reduced (e.g., the light is weakened, the light intensity is reduced, and / or the luminous flux is reduced). Afterwards, the light is incident on the top surface of the display panel 10, and the transmission direction of the light is left-handed circular polarization. Furthermore, the transmission direction of the reflected light R10 reflected by the display panel 10 is right-handed circular polarization. Then, after the reflected light R10 passes through the light control layer 20, the transmission direction of the reflected light R20 is right-handed circular polarization. Then, after the reflected light R10 passes through the phase retardation layer 30, the transmission direction of the reflected light R10 is the second direction D2. Because the transmission direction of the reflected light R10 is perpendicular to the transmission direction of the first linear polarization layer 40, the reflected light R10 cannot pass through the first linear polarization layer 40 and may be blocked. Alternatively, according to one embodiment, the amount of reflected light R10 passing through the first linear polarization layer 40 may be reduced (for example, the light is weakened, the light intensity is reduced, and / or the luminous flux is reduced). Specifically, as shown in Figures 5 and 6 , at least a portion of the incident light (labeled as light L1) passing through the phase retarder layer 30 and entering the first linear polarizing layer 40 has a second transmission direction (e.g., second direction D2) that is different from the first transmission direction (e.g., first direction D1) of the first linear polarizing layer 40. Consequently, when viewed from above, for example, on a plane defined by the first and second directions D1 and D2, the user observes reflected light R60, R50, R40, and R30, but does not observe reflected light R10 and R20 (because they are blocked by the first linear polarizing layer 40). Thus, according to some embodiments, the design of the optical layer in an electronic device can achieve a low reflectivity effect. Referring to Figures 7A and 7B, they are schematic cross-sectional views of the electronic device 3 in the non-conducting and conducting states, respectively, according to some embodiments of the present disclosure. Figures 7A and 7B illustrate that even if the electronic device 3 includes a phase retarder layer 30 and a first linear polarizer layer 40, the operation of the viewing angle switching structure SS will not be affected. Specifically, since the first linear polarizer layer 40 is included in the viewing angle switching structure SS, and the light emitted by the display panel 10 remains non-polarized light after passing through the light control layer 20 and the phase retarder layer 30, the phase retarder layer 30 and the first linear polarizer layer 40 will not affect the operation of the viewing angle switching structure SS. Therefore, providing the phase retarder layer 30 and the first linear polarizer layer 40 can reduce ambient light reflection and maintain the operation of the viewing angle switching structure SS. As shown in FIG7A , in the non-conducting state with no voltage V applied, the viewing angle switching structure SS is in a sharing mode, and light can be emitted from all viewing angles. Specifically, the light rays L101 to L103 emitted by the display panel 10 are non-polarized light rays, and the light rays L101 to L103 remain non-polarized light rays after passing through the light control layer 20 and the phase delay layer 30. Next, the light rays L101 to L103 pass through the non-conducting viewing angle switching structure SS, so that the user can observe the light rays L101 to L103 emitted by the display panel 10 at all viewing angles. As shown in FIG7B , in the conducting state with voltage V applied, the viewing angle switching structure SS is in an anti-peeping mode, and light emission at a wide viewing angle is reduced. Specifically, the light rays L101 to L103 emitted by the display panel 10 are non-polarized light rays, and the light rays L101 to L103 remain non-polarized light rays after passing through the light control layer 20 and the phase delay layer 30. Next, light rays L101-L103 pass through the on-state viewing angle switching structure SS, which attenuates or blocks light at wide viewing angles. For example, the transmission direction of wide-viewing light, such as light L102 or light L103, differs from the transmission direction of the second linear polarizing layer 60 and forms an angle, thereby attenuating light rays L102 or L103. In other embodiments, the sharing mode and anti-peeping mode of the viewing angle switching structure SS can be switched by varying the voltages between the sharing mode and the anti-peeping mode. According to some embodiments, as shown in Figures 7A and 7B, the viewing angle of the electronic device can be switched by adjusting the voltages of the upper and lower electrodes (e.g., the first and second electrodes) in the liquid crystal cell 50 using the viewing angle switching structure SS. That is, the electronic device can further have a switchable anti-peeping function. Furthermore, as described above with reference to Figures 5 and 6, the electronic device 1 can achieve the effect of reducing reflected light while still maintaining a switchable anti-peeping function. Referring to FIG. 8 , a cross-sectional schematic diagram of an electronic device 4 according to some embodiments of the present disclosure is shown. In some embodiments, the type of liquid crystal molecules 55 in the electronic device can be adjusted, and the alignment directions of the first alignment layer 52 and the second alignment layer 56 can be adjusted accordingly. For example, compared to the liquid crystal molecules 55 of the electronic device 3 in FIG. 5 , which are ECB liquid crystal molecules, the liquid crystal molecules 55 of the electronic device 4 are TN liquid crystal molecules. In some embodiments, as shown in FIG. 8 , the alignment direction of the first alignment layer 52 is the second direction D2, the alignment direction of the second alignment layer 56 is the first direction D1, the liquid crystal molecules 55 are TN liquid crystal molecules, the transmission direction of the first linear polarizing layer 40 is the second direction D2, and the transmission direction of the second linear polarizing layer 60 is the first direction D1. This can reduce the reflectivity of the electronic device 4. As shown in FIG. 8 , light incident from the first linear polarizing layer 40 and passing through the phase retarder layer 30 has a right-handed circular polarization direction and continues to travel to the incident display panel 10. Next, the display panel 10 reflects light, changing the phase difference, so that the reflected light has a left-handed circular polarization. The reflected light then continues to pass through the phase retarder layer 30. Because the phase retarder layer 30 functions as a quarter-wave plate, the reflected light (light L1) has a first direction D1. Therefore, at least a portion of the reflected light (light L1) cannot pass through the first linear polarizer layer 40, which has a second direction D2, and is therefore blocked, thereby reducing the reflectivity. Accordingly, the disclosed electronic device is applicable to various types of liquid crystal molecules 55. In summary, according to the disclosed embodiments, by designing the optical layers in the electronic device, the first transmission direction of the first linear polarizing layer 40 and the second transmission direction of at least a portion of the incident light entering the first linear polarizing layer 40 after passing through the phase retarder layer 30 are different, thereby reducing the reflection of ambient light. According to some embodiments, the light control layer 20 is disposed between the display panel 10 and the phase retarder layer 30, enabling the electronic device to have a privacy protection function. According to some embodiments, the electronic device includes a viewing angle switching structure SS, and the viewing angle switching structure SS includes the first linear polarizing layer 40, enabling the electronic device to have a switchable privacy protection function. The components between the embodiments of the present disclosure can be mixed and matched as needed as long as they do not violate the spirit of the invention or conflict with each other. In addition, the scope of protection of the present disclosure is not limited to the processes, machines, manufacturing, material compositions, devices, methods and steps in the specific embodiments described in the specification. Anyone with ordinary knowledge in the relevant technical field can understand from the content of the present disclosure that the processes, machines, manufacturing, material compositions, devices, methods and steps currently or in the future are developed. As long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can be used according to the present disclosure. Therefore, the scope of protection of the present disclosure includes the aforementioned processes, machines, manufacturing, material compositions, devices, methods and steps. Any embodiment or claim of the present disclosure is not required to achieve all the purposes, advantages and / or features disclosed in this disclosure. The above summarizes several embodiments so that those skilled in the art can better understand the concepts of the embodiments of the present disclosure. Those skilled in the art should understand that they can design or modify other processes and structures based on the embodiments of the present disclosure to achieve the same purposes and / or advantages as the embodiments described herein. Those skilled in the art should also understand that such equivalent processes and structures do not depart from the spirit and scope of the present disclosure, and that they can make various changes, substitutions, and replacements without violating the spirit and scope of the present disclosure. 1, 2, 3, 4: Electronic device 10: Display panel 12: Substrate 14: Transistor array 16: Light-emitting layer 18: Cover layer 20: Light control layer 21: First carrier 22: Second carrier 23: Light-shielding portion 24: Light-transmitting portion 30: Phase retardation layer 32: First sublayer 34: Second sublayer 40: First linear polarizing layer 50: Liquid crystal cell 52: First alignment layer 54: Liquid crystal layer 55: Liquid crystal molecules 56: Second alignment layer 60: Second linear polarizing layer D1: First direction D2: Second direction D3: Third direction L, L1, L101, L102, L103, L104, L105: Light R10, R20, R30, R32, R34, R40, R50, R60: Reflected light SS: Viewing angle switching structure V: Voltage The present disclosure can be more fully understood from the following detailed description when read in conjunction with the drawings. It is worth noting that, in accordance with standard industry practice, the various components are not drawn to scale. In fact, for the sake of clarity, the sizes of the various components may be arbitrarily enlarged or reduced. Figure 1 is a cross-sectional schematic diagram showing an electronic device according to some embodiments of the present disclosure. Figure 2 is a cross-sectional schematic diagram showing an electronic device according to some embodiments of the present disclosure. Figure 3 is a partial cross-sectional schematic diagram showing an electronic device according to some embodiments of the present disclosure. Figure 4 is a partial cross-sectional schematic diagram showing an electronic device according to some embodiments of the present disclosure. Figure 5 is a cross-sectional schematic diagram showing an electronic device according to some embodiments of the present disclosure. Figure 6 is a partial cross-sectional schematic diagram showing an electronic device according to some embodiments of the present disclosure. Figures 7A and 7B are cross-sectional schematic diagrams showing an electronic device in a non-conducting state and a conducting state, respectively, according to some embodiments of the present disclosure. Figure 8 is a cross-sectional schematic diagram showing an electronic device according to some embodiments of the present disclosure. 1: Electronic devices 10: Display panel 20: Light control layer 30: Phase delay layer 40: First linear polarizing layer D1: First direction D2: Second direction D3: Third direction L, L1: light

Claims

1. An electronic device comprising: A display panel, including a light-emitting layer; A light control layer is disposed on the display panel. The light control layer includes a plurality of light-shielding portions and a plurality of light-transmitting portions. The light-shielding portions extend along a first direction, and the light-transmitting portions extend along the first direction. The light-shielding portions and the light-transmitting portions are arranged alternately along a second direction, wherein the first direction and the second direction are different. A phase retardation layer is disposed between the display panel and the phase retardation layer. And a viewing angle switching structure, including: a first linear polarizing layer, wherein the phase retardation layer is disposed between the light control layer and the first linear polarizing layer; a liquid crystal cell; and a second linear polarizing layer, wherein the liquid crystal cell is disposed between the first linear polarizing layer and the second linear polarizing layer, wherein the first linear polarizing layer has a first transmission direction, the second linear polarizing layer has a second transmission direction, and the first transmission direction, the second transmission direction, and the first direction are the same.

2. The electronic device of claim 1, wherein a transmission direction of light incident on the first linear polarizing layer after passing through the phase retardation layer is perpendicular to the first transmission direction of the first linear polarizing layer.

3. The electronic device of claim 1, wherein the phase delay layer comprises a quarter-wave plate.

4. The electronic device of claim 3, wherein the phase delay layer further includes a half-wave plate, and the half-wave plate is disposed between the first linear polarizing layer and the quarter-wave plate.

5. The electronic device of claim 1, wherein the liquid crystal unit further includes a first alignment layer, a second alignment layer, and a liquid crystal layer, the liquid crystal layer being disposed between the first alignment layer and the second alignment layer, the first alignment layer being closer to the display panel than the second alignment layer, the alignment direction of the first alignment layer being the second direction, and the alignment direction of the second alignment layer being the opposite direction to the second direction.

6. The electronic device of claim 1, wherein the phase delay layer comprises a plurality of sublayers, and at least one of the plurality of sublayers is a quarter-wave plate.

7. The electronic device of claim 1, wherein the display panel is an organic light-emitting display panel.

8. The electronic device of claim 1, wherein the display panel is an inorganic light-emitting display panel.

9. The electronic device of claim 1, wherein the first direction and the second direction are perpendicular.

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