DISPLAY EQUIPMENT AND ELECTRONIC DEVICES INCLUDING DISPLAY EQUIPMENT

Abstract

The invention relates to a display device and an electronic device comprising a display device. This display device comprises: a display screen for giving a screen image in the first direction; and a lens assembly comprising at least three lenses arranged in a sequential line along an optical axis for focusing or directing a screen given from the display screen in a defined direction / to a defined position. The lens assembly is capable of reflecting a screen given from the display screen at least twice between the first lens furthest from the display screen among at least three lenses and the nth lens closest to the display screen among at least three lenses. The display screen may be arranged to be able to move in a cutting direction with respect to the first direction or a cutting direction with respect to the optical axis.The display device can satisfy [conditional expression 1; 0.02 <= MD / DSP <= 0.2] relating the diagonal length (DSP) of the display and the distance (MD) measured perpendicular to the optical axis as the distance from the optical axis to the center of the display.

Description

Display device and electronic device including the same

[0001] The present invention relates to electronic devices, and more particularly, to display devices and / or electronic devices including the same.

[0002] Portable electronic devices, such as electronic notebooks, portable multimedia players, mobile communication terminals, and tablet PCs, typically feature display elements (e.g., display modules) and batteries, and have typically had bar-shaped, folder-shaped, or sliding-type appearances due to the shape of the display elements or batteries. Recently, as the performance of display elements and batteries has improved, they have become smaller, leading to the emergence of electronic devices that can be worn on parts of the body, such as the wrist or head, or in the form of clothing (hereinafter referred to as "wearable electronic devices").

[0003] Examples of wearable electronic devices include head-mounted wearable devices (HMDs), smart glasses, smart watches (or bands), contact lens-type devices, ring-type devices, clothing / shoe / glove-type devices, etc. These body-worn electronic devices can be easily carried, thereby improving user accessibility.

[0004] For example, a head-mounted wearable device is a device worn on the user's head or face that projects images onto the user's retina, allowing the user to view virtual images in three-dimensional space. For example, head-mounted wearable devices can be categorized into see-through types that provide augmented reality (AR) experiences and see-closed types that provide virtual reality (VR) experiences. A see-through type head-mounted wearable device can be implemented in the form of glasses, for example, and can provide the user with information such as buildings and objects in the space within the user's field of vision in the form of images or text. A see-closed type head-mounted wearable device can output independent images to both eyes of the user, and can provide the user, or one person, with an excellent sense of immersion by outputting content (such as games, movies, streaming, and broadcasting) provided by a mobile communication terminal or an external input in the form of images or audio. Additionally, head-mounted wearable devices may be used to provide mixed reality (MR) or extended reality (XR), which are a combination of augmented reality (AR) and virtual reality (VR).

[0005] Recently, product development for head-mounted wearable devices has been actively underway, and they are being used for a variety of purposes, including military, gaming, industrial, and medical applications. Consequently, there is a growing demand for smaller, lighter devices while also providing superior image quality.

[0006] The above information may be provided as background art to aid in understanding the present disclosure.

[0007] According to the present invention, a display device may include a display configured to output an image to a screen along a first direction, and a lens assembly including at least three lenses sequentially arranged along an optical axis and configured to focus or guide a screen output from the display to a designated direction or designated location. In one embodiment, the lens assembly may be configured to reflect the screen output from the display at least twice between a first lens among the at least three lenses, which is arranged farthest from the display, and an n-th lens among the at least three lenses, which is arranged closest to the display. In one embodiment, the display may be arranged to be movable in a direction intersecting the first direction or in a direction intersecting the optical axis. In one embodiment, such a display device may satisfy the following [Conditional Expression 1] regarding a diagonal length 'DSP' of the display and a distance 'MD', which is a distance from the optical axis to the center of the display and is measured along a direction perpendicular to the optical axis.

[0008] [Condition 1]

[0009] 0.02 <= MD / DSP <= 0.2

[0010] According to one embodiment of the present invention, an electronic device may include a first display device and a second display device arranged on one side of the first display device. In one embodiment, at least one of the first display device or the second display device may include a display configured to output an image to a screen along a first direction, and a lens assembly including at least three lenses sequentially arranged along an optical axis and configured to focus or guide a screen output from the display to a designated direction or designated location. In one embodiment, the lens assembly may be configured to reflect the screen output from the display at least twice between a first lens among the at least three lenses, which is arranged farthest from the display, and an n-th lens among the at least three lenses, which is arranged closest to the display. In one embodiment, the display may be arranged to be movable in a direction intersecting the first direction or in a direction intersecting the optical axis. In one embodiment, the electronic device, the first display device, and / or the second display device may satisfy the following [Conditional Expression 1] and [Conditional Expression 2].

[0011] [Condition 1]

[0012] 0.02 <= MD / DSP <= 0.2

[0013] [Condition 2]

[0014] 0.2 <= (LD-DSP) / TTL <= 0.7

[0015] Here, 'DSP' is a diagonal length of the display, 'MD' is a distance from the optical axis to the center of the display, which is a distance measured along a direction perpendicular to the optical axis, 'LD' is a largest outer diameter among the outer diameters of the at least three lenses, and 'TTL' is a distance from the display to the first lens surface of the first lens along the optical axis, wherein the first lens surface may refer to a surface of the lens surfaces of the first lens that faces in a direction opposite to a surface facing the display.

[0016] The above-described aspects or other aspects, configurations and / or advantages of the present invention may be further clarified by the following detailed description taken in conjunction with the accompanying drawings.

[0017] FIG. 1 is a block diagram illustrating an electronic device within a network environment according to one embodiment.

[0018] FIG. 2 is a diagram illustrating a wearable electronic device according to one embodiment.

[0019] FIG. 3 is a perspective view showing the front of a wearable electronic device according to one embodiment.

[0020] FIG. 4 is a perspective view showing the rear side of a wearable electronic device according to one embodiment.

[0021] FIG. 5 is a diagram illustrating a path along which light output by a display is focused or guided to a user's eye in a wearable electronic device according to one embodiment.

[0022] FIG. 6 is a drawing illustrating a wearing state of a display device and / or an electronic device including a display according to one embodiment.

[0023] FIG. 7 is a drawing illustrating a field of view of a display device and / or an electronic device including a display device according to one embodiment.

[0024] FIG. 8 is a drawing illustrating an angle of view (or viewing angle) of a display device and / or an electronic device including a display device according to one embodiment.

[0025] FIG. 9 is a drawing illustrating an example of a display moving in a display device and / or an electronic device including a display device according to one embodiment.

[0026] FIG. 10 is a drawing illustrating a display position before / after movement in a display device and / or an electronic device including a display device according to one embodiment.

[0027] FIG. 11 is a drawing for explaining the angle of view (or viewing angle) according to the display movement of a display device and / or an electronic device including a display device according to one embodiment.

[0028] FIG. 12 is a drawing illustrating a front view of a user in a state where the display is moved in a different direction in a display device and / or an electronic device including a display device according to one embodiment.

[0029] FIG. 13 is a perspective view illustrating a rotation or tilt operation of a display in a display device and / or an electronic device including a display device according to one embodiment.

[0030] FIG. 14 is a drawing illustrating a user side view of a display device and / or an electronic device including a display device according to one embodiment, wherein the display is rotated or tilted around the X-axis.

[0031] FIG. 15 is a drawing showing a user view from above in a state where the display is rotated or tilted around the Y-axis in a display device and / or an electronic device including a display device according to one embodiment.

[0032] FIG. 16 is a drawing illustrating a front view of a user in a state where the display is rotated or tilted around the Z-axis in a display device and / or an electronic device including a display device according to one embodiment.

[0033] Electronic devices that provide visual information while worn on the user's head or face, such as head-mounted wearable devices, can face challenges in providing a comfortable fit, reducing user fatigue, and providing high-quality images. For example, considering comfort and user fatigue, the specifications of the display or optical system (e.g., lens assembly) may be limited, making it difficult to provide high-quality images. Furthermore, considering the user's physical condition (e.g., facial shape), a closed-loop head-mounted wearable device may face greater challenges in meeting user demands regarding comfort and image quality. For example, while the horizontal field of view for both eyes is generally approximately 200 degrees, implementing an electronic device (e.g., a head-mounted wearable device) that can satisfy this user field of view through a combination of a display and optical system may be difficult to alleviate user fatigue.

[0034] One embodiment of the present disclosure is intended to at least resolve the above-described problems and / or disadvantages and at least provide the advantages described below, and can provide a display device and / or an electronic device including the same that can reduce user fatigue by providing a comfortable wearing feeling in a wearing state.

[0035] One embodiment of the present disclosure can provide a display device and / or an electronic device including the same that can implement high-quality images by providing a comfortable fit and having optical performance (e.g., field of view) that matches a user's viewing angle.

[0036] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

[0037] The following description of the accompanying drawings may provide an understanding of various exemplary implementations of the present disclosure, including the claims and their equivalents. While the exemplary embodiments disclosed in the following description include numerous specific details to aid understanding, they are to be considered as one example of various exemplary embodiments. Accordingly, those skilled in the art will appreciate that various modifications and variations of the various implementations described herein may be made without departing from the scope and spirit of the disclosure. Furthermore, descriptions of well-known functions and configurations may be omitted for clarity and conciseness.

[0038] The terms and words used in the following description and claims are not limited to their reference meanings and can be used to clearly and consistently describe one embodiment of the present disclosure. Therefore, it will be apparent to those skilled in the art that the following description of various implementations of the disclosure is provided for illustrative purposes, not for the purpose of limiting the scope of the disclosure and its equivalents.

[0039] Unless the context clearly dictates otherwise, the singular forms of "a," "an," and "the" should be understood to include plural meanings. Thus, for example, "a component surface" could be understood to include one or more of the surfaces of the component.

[0040] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to one embodiment of the present disclosure. Referring to FIG. 1 , in the network environment (100), the electronic device (101) may communicate with the electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of the electronic device (104) or the server (108) via a second network (199) (e.g., a long-range wireless communication network). In one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In one embodiment, the electronic device (101) may have at least one of these components (e.g., the connection terminal (178)) omitted, or one or more other components added. In one embodiment, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0041] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor), or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (121). For example, when the electronic device (101) includes the main processor (121) and the auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0042] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0043] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0044] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0045] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0046] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0047] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0048] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0049] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0050] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) to an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0051] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0052] The haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0053] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0054] The power management module (188) can manage the power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0055] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0056] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0057] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0058] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the at least one selected antenna. In one embodiment, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0059] In one embodiment, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

[0060] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0061] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0062] Electronic devices according to embodiments of the present disclosure may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments of the present disclosure are not limited to the aforementioned devices.

[0063] The embodiments of the present disclosure and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to encompass various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly dictates otherwise. In this document, phrases such as "A or B," "at least one of A and B," "at least one of A or B," "A, B, or C," "at least one of A, B, and C," and "at least one of A, B, or C" can each include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used simply to distinguish the corresponding component from other corresponding components, and do not limit the corresponding components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as being “coupled with”, “coupled to”, or “connected with”, “connected to”, with or without the terms “functionally” or “communicatively”, it can be understood that the component can be connected to the other component directly (e.g., wired), wirelessly, or via a third component.

[0064] The term "module" used in the embodiments of the present disclosure may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0065] Embodiments of the present disclosure may be implemented as software (e.g., a program) including one or more instructions stored in a storage medium (e.g., built-in memory or external memory) readable by a machine (e.g., an electronic device). For example, a processor (e.g., a processor) of the machine (e.g., an electronic device) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, "non-transitory" only means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and this term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily in the storage medium.

[0066] According to one embodiment, a method according to the embodiment(s) of the present disclosure may be provided as a computer program product. The computer program product may be traded between sellers and buyers as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read only memory (CD-ROM)) or may be provided through an application store (e.g., Play Store). TM ) or directly between two user devices (e.g., smartphones), online distribution (e.g., downloading or uploading). In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0067] According to one embodiment, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to one embodiment, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to one embodiment, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0068] FIG. 2 is a drawing showing a wearable electronic device (200) according to one embodiment.

[0069] In describing one embodiment of the present invention, some numerical values, etc. may be presented, but it should be noted that such numerical values ​​do not limit one embodiment of the present disclosure unless specifically stated in the claims.

[0070] In one embodiment, referring to FIG. 2, a wearable electronic device (200) (e.g., the electronic device (101) of FIG. 1) is an electronic device that can be worn on a user's head or face, and the user can visually recognize surrounding objects or environments while wearing the wearable electronic device (200). The wearable electronic device (200) can acquire and / or recognize visual images of objects or environments viewed by the user or in the direction in which the wearable electronic device (200) is directed using a camera module, and can receive information about the objects or environments from an external electronic device via a network. The wearable electronic device (200) can provide the user with the information about the objects or environments received in an acoustic or visual form. For example, the wearable electronic device (200) can provide the user with the information about the objects or environments received in a visual form using a display member such as a display module. By visualizing information about objects or the environment and combining it with actual images (or videos) of the user's surroundings, the wearable electronic device (200) can implement an augmented reality (AR), virtual reality (VR), mixed reality (MR), and / or extended reality (XR) interface for the user. The display member can provide the user with information about objects or the environment around him / her by outputting a screen in which an augmented reality object is added to an actual image (or video) of the user's surroundings.

[0071] According to one embodiment, all or part of the operations executed by the electronic device (101) or the wearable electronic device (200) may be executed by one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) or the wearable electronic device (200) needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) or the wearable electronic device (200) may, instead of executing the function or service itself or in addition, request one or more of the external electronic devices (102, 104, or 108) to execute the function or at least a part of the service. The one or more of the external electronic devices (102, 104, or 108) that receive the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101) or the wearable electronic device (200). The electronic device (101) or the wearable electronic device (200) may provide the result as is or by further processing it as at least part of a response to the request. For example, the external electronic device (102) may render content data executed in an application and then transmit it to the electronic device (101) or the wearable electronic device (200), and the electronic device (101) or the wearable electronic device (200) that receives the content data may output the content data to a display module.When the electronic device (101) or the wearable electronic device (200) detects user movement through a sensor(s) such as an inertial measurement unit sensor, the processor (e.g., the processor (120) of FIG. 1) of the electronic device (101) or the wearable electronic device (200) may correct the rendering data received from the external electronic device (102) based on the movement information and output the corrected rendering data to the display module. In another embodiment, when the user movement is detected through the sensor(s), the processor (e.g., the processor (120) of FIG. 1) of the electronic device (101) or the wearable electronic device (200) may transmit the movement information to the external electronic device (102) and request rendering of the movement information so that the screen data is updated accordingly. According to various embodiments, the external electronic device (102) may be various types of devices, such as a case device that can store and charge the electronic device (101).

[0072] It should be noted that the detailed description below may refer to various things such as "a state or position in which an electronic device or a designated component of an electronic device faces the user's face," and this describes an example in which the user wears a wearable electronic device (200).

[0073] According to one embodiment, the wearable electronic device (200) may include at least one display member and a wearing member. Depending on the structure of the display member, the wearable electronic device (200) may further include a structure (e.g., a lens frame) for mounting or supporting the display member. The display members may be provided as a pair including a first display member and a second display member, and may be arranged to correspond to the user's right eye and left eye, respectively, when the wearable electronic device (200) is worn on the user's body. In one embodiment, the wearable electronic device (200) may also include a housing form (e.g., a goggle form) including one display member corresponding to the user's right eye and left eye.

[0074] According to one embodiment, the display member is a configuration provided to provide visual information to a user, and may include, for example, a display (D), a plurality of lenses (L1, L2, L3, L4) (e.g., a lens assembly), and / or at least one sensor. Here, the lens assembly and the display (D) may each be formed transparently or translucently. However, the display member is not limited thereto. In one embodiment, the display member may include a window member, and the window member may be a translucent glass material or a member whose light transmittance can be adjusted as a coloring concentration is adjusted.

[0075] In one embodiment, the display member may include a lens including a waveguide, or a reflective lens, and may provide visual information to a user by focusing an image output from an optical output device (e.g., a projector or a display (D)) on each lens. For example, the display member may include a waveguide (e.g., a light waveguide) on at least a portion of each lens, and may mean a display that transmits an image (or light) output from an optical output device such as a display (D) to a user's eye through the waveguide included in the display member, and at the same time transmits the real world to the user's eye through that area in a see-through manner. In another embodiment, the waveguide may be understood as a part of a lens assembly. In a display member in which a plurality of lenses (e.g., L1, L2, L3, L4) and a reflective member are combined, such as in the lens assembly (LA) of FIG. 5 or 6 described below, the waveguide may be omitted.

[0076] According to one embodiment, the lens assembly (LA) may be configured to include a plurality of lenses (e.g., L1, L2, L3, L4) but not a waveguide, and may be arranged in a space within the wearable electronic device (200) aligned with an optical axis (e.g., the optical axis (O) of FIG. 6). A configuration in which visual information output from the display (D) is provided to the user's eyes through the lens assembly will be discussed again below with reference to FIG. 5.

[0077] FIGS. 3 and 4 are drawings showing the front and back of a wearable electronic device (300) according to one embodiment.

[0078] In one embodiment, referring to FIGS. 3 and 4, in one embodiment, camera modules (311, 312, 313, 314, 315, 316) and / or depth sensors (317) may be provided and / or arranged on a first surface (310) of an electronic device (300) (e.g., a housing) to obtain information related to the surrounding environment of the wearable electronic device (300).

[0079] In one embodiment, the camera modules (311, 312) can acquire images related to the environment surrounding the wearable electronic device.

[0080] In one embodiment, the camera modules (313, 314, 315, 316) can acquire images while the wearable electronic device is worn by a user. The camera modules (313, 314, 315, 316) can be used for hand detection, tracking, and recognition of user gestures (e.g., hand movements). The camera modules (313, 314, 315, 316) can be used for 3DoF (degrees of freedom) and 6DoF (degrees of freedom) head tracking, position (spatial, environmental) recognition, and / or movement recognition. In one embodiment, the camera modules (311, 312) can also be used for hand detection and tracking or recognition or detection of user gestures.

[0081] In one embodiment, the depth sensor (317) may be configured to transmit a signal and receive a signal reflected from a subject / object, and may be used for purposes such as time of flight (TOF) to determine the distance to an object. Instead of or in addition to the depth sensor (317), camera modules (313, 314, 315, 316) may determine the distance to an object.

[0082] According to one embodiment, a camera module (325, 326) for facial recognition and / or a display (331) (and / or a lens) may be disposed on the second side (320) of the housing.

[0083] In one embodiment, a face recognition camera module (325, 326) positioned adjacent to the display may be used to recognize a user's face, or may be used to recognize and / or track both eyes of the user.

[0084] In one embodiment, the display (331) (and / or lens) may be disposed on the second side (320) of the wearable electronic device (300). In one embodiment, the display (331) (and / or lens) may be at least partially similar to, or substantially identical to, the display (D) (and / or lenses L1, L2, L3, L4) of FIG. 2. In one embodiment, the wearable electronic device (300) may not include the camera modules (315, 316) among the plurality of camera modules (313, 314, 315, 316). Although not illustrated in FIGS. 3 and 4 , the wearable electronic device (300) may further include at least one of the configurations illustrated in FIGS. 1 and / or 2 .

[0085] In one embodiment, the display (331) may be understood to include a display module (e.g., the display module (160) of FIG. 1) that outputs a screen, and a lens assembly that focuses the output screen onto the user's eyes. In FIG. 4, it is noted that reference numerals are assigned to parts of the structure of the display (331) that are visible from the exterior of the wearable electronic device (300), indicating the lens positioned closest to the user's eyes.

[0086] As described above, according to one embodiment, the wearable electronic device (300) may have a form factor for being worn on a user's head. The wearable electronic device (300) may further include a strap and / or a wearing member for being secured to a body part of the user. The wearable electronic device (300) may provide a user experience based on an augmented reality, virtual reality, and / or mixed reality interface while being worn on the user's head.

[0087] FIG. 5 illustrates a path along which light output by a display (D) is focused or guided to a user's eye (E) in a wearable electronic device (300) according to one embodiment.

[0088] According to one embodiment, and referring further to FIG. 5 together with FIG. 2, a wearable electronic device (300) may include a display (D), a lens assembly (LA) (e.g., a plurality of lenses (L1, L2, L3, L4)), at least one quarter wave plate (QWP) (203, 205), at least one reflective polarizer (RP) (202), and / or at least one beam splitter (204). In one embodiment, the at least one quarter wave plate (203, 205), the at least one reflective polarizer (RP) (202), and / or the at least one beam splitter (204) may be understood as part of the lens assembly (LA). In one embodiment, at least one of the plurality of lenses (L1, L2, L3, L4) may be movable to adjust a diopter to provide a vision correction function to a user.

[0089] According to one embodiment, at least one quarter wave plate (203, 205), at least one reflective polarizer (202), and at least one beam splitter (204) can extend and / or adjust the light propagation path length between the user's eye (E) and the display (D). For example, by implementing a focal length longer than the mechanical or physical length of the lens assembly (LA), the lens assembly (LA) can be mounted on an electronic device that is miniaturized enough to be worn on the face, while providing a good quality image to the user. Since wearable electronic devices (e.g., AR / VR glasses) are limited in size or weight due to the actual use environment (e.g., used in a worn state), the resolution of the output virtual image may be limited, and it may be difficult to provide a good quality image to the user even through an optical system. According to one embodiment, the wearable electronic device (300) may include an optical system (e.g., a lens assembly (LA)) having a pancake lens structure, thereby extending the optical path length of incident light relative to its external size and / or increasing the image resolution provided to the user. For example, the wearable electronic device (300) may be an optical device (e.g., AR / VR glasses) that provides visual information to the user while being worn on the user's head or face by including a display (D) and a lens assembly (LA).

[0090] According to one embodiment, the display (D) may include a screen display area that displays visual information to a portion corresponding to both eyes of the user when the user wears the wearable electronic device (300). In one embodiment, the wearable electronic device (300) may include a pair of displays (D) corresponding to both eyes of the user. The displays (D) may include, for example, a liquid crystal display (LCD), a light emitting diode (LED) display, an organic light emitting diode (OLED) display, a micro OLED, a micro LED, or a micro electro mechanical system (MEMS) display, or an electronic paper display. In one embodiment, the organic light emitting diode may be a display implemented on a silicon wafer (e.g., OLED on silicon (OLEDoS)). The displays (D) may display, for example, various contents (e.g., text, images, videos, icons, symbols, etc.) provided as visual information to the user.

[0091] According to one embodiment, various contents (e.g., text, images, videos, icons, or symbols, etc.) output in the form of light from the display (D) may be provided to the user's eyes by passing through at least one 1 / 4 wave plate (203, 205), at least one reflective polarizer (202), at least one beam splitter (204), and / or a lens assembly (LA). The order in which the light passes through the at least one 1 / 4 wave plate (203, 205), at least one reflective polarizer (202), at least one beam splitter (204), and / or the lens assembly (LA) may be variously set according to various embodiments.

[0092] According to one embodiment, a first 1 / 4 wave plate (203) and a reflective polarizer (202) may be disposed on the eye side surface of the first lens (L1) (hereinafter, referred to as the “first lens (L1)”) from the user’s eye (E) among the two surfaces of the lens assembly (LA), and a beam splitter (204) may be disposed on either the first lens (L1) or the second lens (L2) (hereinafter, referred to as the “second lens (L2)”) from the user’s eye (E) among the two surfaces of the lens assembly (LA). For example, in the illustrated embodiment, the beam splitter (204) may be disposed on the display side surface of the second lens (L2), and in another embodiment, the beam splitter may be disposed on the display side surface of the first lens (L1). Here, “disposed on XX” may refer to being disposed adjacent to or substantially in contact with XX. For example, the beam splitter (204) may be positioned adjacent to the display-side surface of the first lens (L1) or the second lens (L2), or may be provided in a state of substantially contacting the display-side surface of the first lens (L1) or the second lens (L2).

[0093] In the illustrated embodiment, the first lens (L1) of the wearable electronic device (300) or the lens assembly (LA) may be understood as the lens that is positioned farthest from the display (D) among a plurality of lenses (e.g., at least three lenses), or the lens that is positioned closest to the user's eye (E). However, it should be noted that the embodiment(s) of the present disclosure are not limited thereto. For example, although not illustrated, the wearable electronic device (300) or the lens assembly (LA) may further include a transmissive optical member that is positioned farther from the display (D) than the first lens (L1). In one embodiment, the transmissive optical member may have a refractive power that does not affect the optical performance of the wearable electronic device (300) and / or the lens assembly (LA) described below. In one embodiment, the transmissive optical member that is positioned farther from the display (D) than the first lens (L1) may have a transmittance of about 90% or more for visible light. In one embodiment, the transmissive optical member can have a transmittance close to approximately 100% for visible light. In the illustrated embodiment, reference numeral '201' is intended to illustrate the first polarizer, but in other embodiments, the first polarizer may be omitted. In a structure in which the first polarizer is omitted, reference numeral '201' can be understood as the transmissive optical member described above. In one embodiment, the transmissive optical member can be arranged between the first lens (L1) and the first polarizer (201) or between the reflective polarizer (202) and the first polarizer (201).

[0094] In one embodiment, FIG. 5 illustrates that a first quarter wave plate (203) and / or a reflective polarizer (202) are disposed adjacent to (or substantially in contact with) the user's eye-side surface of the first lens (L1), and a beam splitter (204) is disposed adjacent to (or substantially in contact with) the display-side surface of the second lens (L2) (or the first lens (L1)). In one embodiment, the reflective polarizer (202) is configured in a film form and is laminated with the first quarter wave plate (203) to form a first film portion (F1) (or first polarizing plate), which can be attached to the lens (L1) that is disposed first from the user's eye. Here, 'lamination' may mean that at least one of two different members is provided with an adhesive to bond them to each other. In one embodiment, when the first 1 / 4 wave plate (203) and / or the reflective polarizer (202) are placed in contact with a lens (e.g., the first lens (L1)), for example, when attached to one surface of the first lens (L1), the surface of the first lens (L1) that is in contact with the first 1 / 4 wave plate (203) and / or the reflective polarizer (202) can be implemented as a substantially flat surface.

[0095] According to one embodiment, the first film portion (F1) in the form of a first 1 / 4 wave plate (203) and a reflective polarizer (202) laminated together may be thinner and have superior optical performance than a film portion having a simple laminated structure. According to one embodiment, the wearable electronic device (300), the lens assembly (LA), and / or the first film portion (F1) may further include at least one separately provided polarizing film (e.g., the first polarizer (201)), as illustrated in FIG. 5, and additionally or alternatively, may further include at least one anti-reflection (AR) film (not illustrated). In one embodiment, when the wearable electronic device (300) and / or the lens assembly (LA) further include a transmissive optical member (not illustrated), the transmissive optical member may be disposed between the reflective polarizer (202) and the first polarizer (201). For example, the first polarizer (201) may be understood as a part of the first film portion (F1) or as an independent component with respect to the first film portion (F1).

[0096] In one embodiment, a liquid crystal display, an organic light emitting diode display, and / or a micro LED can provide a good quality image by including a polarizing plate. In one embodiment, when the lens assembly (LA) further includes a first film portion (F1) and / or a first polarizer (201), the image quality perceived by the user can be improved even if the display (D) outputs an image of the same quality. In another embodiment, when combined with a lens assembly (LA) including a first film portion (F1), a second film portion (F2), and / or a first polarizer (201), some polarizing plates may be omitted from a display (D) implemented as an organic light emitting diode display or a micro LED. In one embodiment, the lens assembly (LA) may include a first film portion (F1) and / or a first polarizer (201), and the display (D) may include a polarizing plate.

[0097] Referring to FIG. 5, the first film portion (F1) (or polarizing plate) is positioned closer to the user's eye (E) than the lens assembly (LA) to selectively transmit, reflect, and / or block light entering the user's eye (e.g., light output from the display (D)). The beam splitter (204) may be positioned between the lenses of the lens assembly (LA), for example, between the first lens (L1) and the second lens or between the second lens (L2) and the third lens (L3). The beam splitter (204) may be configured to transmit a portion of the light incident on the beam splitter (204) and reflect another portion of the light incident on the beam splitter (204). For example, the beam splitter (204) may be configured to transmit approximately 50% of the light and reflect approximately 50% of the light. In one embodiment, the beam splitter (204) may be configured as a semi-transparent mirror, for example, in the form of a mirror coated on one surface of the first lens (L1) or the second lens (L2). Hereinafter, based on the functional aspect of light reflection, the reflective polarizer (202) may be referred to as a 'first reflective member', and the beam splitter (204) may be referred to as a 'second reflective member'.

[0098] In the following description, a direction from the user's eye (E) toward the display (D) may be referred to as a first direction, and a direction from the display (D) toward the user's eye (E) opposite to the first direction may be referred to as a second direction. The first direction and the second direction may be substantially parallel to the optical axis (O). The lens assembly (LA) may include a plurality of lenses (e.g., a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4)) sequentially arranged along the first direction.

[0099] According to one embodiment, the wearable electronic device (300) may include a second film portion (F2) (e.g., a second polarizing plate) disposed at a position further from the user's eye (E) than the lens assembly (LA) to selectively transmit, reflect, and / or block light entering the lens assembly (LA). In the illustrated embodiment, the second film portion (F2) is exemplified as being disposed between the display (D) and the lens assembly (LA) (e.g., the fourth lens (L4)), and in the embodiment described below, the second film portion (F2) (e.g., the second polarizing plate) may be exemplified as being disposed between the first lens (L1) and the second lens (L2). For example, the second film portion (F2) may be disposed at any position between the display (D) and the first lens (L1).

[0100] According to one embodiment, the second film portion (F2) may include a second 1 / 4 wavelength plate (205) and a second polarizer (206). Similar to the first film portion (F1), the second 1 / 4 wavelength plate (205) and the polarizer (206) may be laminated to implement the second film portion (F2). As previously mentioned, for the purpose of distinguishing the components, the 1 / 4 wavelength plate (203) of the first film portion (F1) described above may be referred to as the first 1 / 4 wavelength plate (203), and the 1 / 4 wavelength plate (205) of the second film portion (F2) may be referred to as the second 1 / 4 wavelength plate (205). Additionally, the polarizer (206) of the second film portion (F2) may be referred to as a second polarizer (206) to distinguish it from the first polarizer (201) included in the first film portion (F1).

[0101] According to one embodiment, when the first film portion (F1) is disposed adjacent to (or in contact with) the n-th lens (wherein 'n' is a natural number), the second film portion (F2) may be disposed on the n+1-th lens disposed adjacent to the n-th lens. 'Disposed on the n+1-th lens' may be understood as meaning that the second film portion (F2) is disposed adjacent to or in contact with any one of the surfaces of the n+1-th lens. In one embodiment, the n-th lens may be understood as the lens (e.g., the first lens (L2)) disposed farthest from the display (D) among the lenses (L1, L2, L3, L4) of the lens assembly (LA). The second film portion (F2) may be substantially attached to any one of the surfaces of the n+1-th lens. The surface of the n+1-th lens to which the second film portion (F2) is attached may be substantially flat. As will be described later, when a first film portion (F2) including a first reflective member (e.g., a reflective polarizer (202)) is disposed on the user's eye-side surface of the first lens (L1), a second reflective member (e.g., a beam splitter (204)) may be disposed on the display-side surface of the first lens (L1), and the second film portion (F2) may be disposed on the user's eye-side surface of the second lens (L2). In one embodiment, the second film portion (F2) may be disposed on the display-side surface of the second lens (L2).

[0102] According to one embodiment, the arrangement of the film portions (F1, F2) and / or the beam splitter (204) as described above can provide a good quality image while miniaturizing the optical system implemented with a limited number of lenses (e.g., at least 3). For example, by reducing the number of lenses (or the number of lens surfaces) arranged between the reflective polarizer (202) as the first reflective member and the beam splitter (204) as the second reflective member, refraction or scattering, and / or birefringence due to manufacturing errors in the path of reflected light can be suppressed. As mentioned above, the more refraction or scattering occurs in the path from the display (D) to the user's eye (E), the more difficult it is to stabilize the optical performance or image quality.

[0103] According to one embodiment, the wearable electronic device (300) may operate as follows. Light output from the display (D) may pass through the second film portion (F2), the lens assembly (LA), and the first film portion (F1) and then reach the user's eye (E). At this time, the second polarizer (206) of the second film portion (F2) may transmit the first linear polarization, for example, vertical polarization (or p polarization), and may not transmit the second linear polarization, for example, horizontal polarization (or s polarization). For example, among the light reaching the second polarizer (206), only vertical polarization (or p polarization) may be transmitted. Light transmitted through the second polarizer (206) is converted into circular polarization (right-hand circular polarization or left-hand circular polarization) by the second 1 / 4 wave plate (205), and this circular polarization can reach the first 1 / 4 wave plate (203) after passing through the lens assembly (LA) and the beam splitter (204). The circular polarization reaching the first 1 / 4 wave plate (203) is converted back into linear polarization (e.g., vertical polarization (or p-polarization)) while passing through the first 1 / 4 wave plate (203) and can reach the reflective polarizer (202). Until reaching the reflective polarizer (202), the light can move in the second direction (display (D) -> user's eye (E)). Light reaching the reflective polarizer (202) is reflected by the reflective polarizer (202) and directed in the first direction (user's eye (E) -> display (D)), and can be converted into circular polarization (right-hand circular polarization or left-hand circular polarization) while passing through the first 1 / 4 wave plate (203). This circular polarization (right-hand circular polarization or left-hand circular polarization) is reflected by the beam splitter (204) and directed in the second direction again, and at this time, the phase can be converted (for example, when it is left-hand circular polarization -> right-hand circular polarization, when it is right-hand circular polarization -> left-hand circular polarization). The circular polarization whose phase has been converted can pass through the first 1 / 4 wave plate (203) and the reflective polarizer (202) so as to propagate in the second direction and reach the user's eye (E).At this time, the light passing through the first 1 / 4 wave plate (203) is converted into horizontal polarization (or s polarization) and can reach the user's eye (E). However, FIG. 5 is an example of a state change of light passing through a wearable electronic device (300) according to one embodiment, and it should be noted that the conversion of polarization components by the reflective polarizer (202), the 1 / 4 wave plate (203, 205), the beam splitter (204), and / or the second polarizer (206) may be different from the mentioned embodiment.

[0104] In the embodiment of FIG. 5, the optical path from the display (D) to the user's eye (E) or the polarization state of the light passing through (or reflected) the film portions (F1, F2) or the beam splitter (204) is described. For the convenience of description of the optical path or the polarization state, FIG. 5 illustrates that the second film portion (F2) is disposed on the fourth lens (L4), but the present invention is not limited thereto. In another embodiment, the first film portion (F1) and the second film portion (F2) may be disposed between two adjacent lenses (e.g., the first lens (L1) and the second lens (L2)), and the beam splitter (204) may be disposed between the first film portion (F1) and the second film portion (F2).

[0105] In the embodiments described below, for the sake of brevity of the drawings, reference numerals for lens surfaces of the lens may not be directly described in the drawings. When referring to the lens surfaces, the surface facing or opposite the display may be described as the 'sensor side surface' or the 'display side surface', and the surface facing the user's eye as the opposite side of the 'sensor side surface' or the 'display side surface' may be described as the 'subject side surface' or the 'eye side surface'. For example, even if reference numerals in the drawings are omitted, those skilled in the art will easily understand the lens surfaces with respect to their orientations based on the states illustrated in the drawings.

[0106] FIG. 6 is a drawing illustrating a wearing state of a display device (401, 402) and / or an electronic device (400) including the same (e.g., the electronic device (101) of FIG. 1 and / or the wearable electronic device (200, 300) of FIGS. 2 to 5) according to one embodiment.

[0107] In one embodiment, and referring to FIG. 6, the electronic device (400) may include a first display device (401) and a second display device (402), which are wearable electronic devices that can be worn on a user's face. The first display device (401) may be configured (or arranged) to provide visual information to, for example, the user's eye (RE) (e.g., the right eye), and the second display device (402) may be configured to provide visual information to the user's left eye (e.g., the left eye (LE) of FIG. 11). In one embodiment, the first display device (401) and the second display device (402) may have substantially the same configuration, and may be arranged to be symmetrical with respect to each other when placed on the user's face or inside the electronic device (400). Augmented reality, virtual reality, mixed reality and / or extended reality interfaces can be implemented by images provided independently from the first display device (401) and the second display (D), or by images provided from the synchronized first display device (401) and the second display.

[0108] According to one embodiment, the display device (401, 402)(s) may include a display (D) and a lens assembly (LA). The display (D) is configured to output a screen output along a first direction, for example, toward a user's eye (RE), and may be substantially identical to, or at least partially identical to, the display module (160) of FIG. 1, or the display (D, 331) of FIG. 2, FIG. 3, and / or FIG. 5. The lens assembly (LA) may include at least three lenses (L1, L2, L3, L4) aligned along the optical axis (O). In the illustrated embodiment, the lens assembly (LA) is exemplified as including four lenses, and the at least three lenses (L1, L2, L3, L4) may be distinguished by being numbered according to the arranged order. For example, the lens positioned furthest from the display (D) may be referred to as the first lens (L1), and the lens positioned closest to the display (D) may be referred to as the n-th lens. In the embodiment of FIG. 6, the n-th lens may be understood as the fourth lens (L4).

[0109] According to one embodiment, the lens assembly (LA) may be configured to focus (or guide) a screen output from the display (D) to a specified direction or a specified position using a combination of at least three lenses (L1, L2, L3, L4). For example, the screen output from the display (D) may be focused onto the user's eye (RE) via the lens assembly (LA). In one embodiment, in guiding the screen output from the display (D) to the user's eye (RE), the lens assembly (LA) may be configured to reflect light (e.g., the screen output from the display (D)) at least twice between the first lens (L1) and the n-th lens (L4). For example, the lens assembly (LA) may include at least one 1 / 4 wave plate, at least one reflective polarizer, or at least one beam splitter. In one embodiment, in a structure that reflects light (e.g., a screen output from a display (D)) at least twice between a first lens (L1) and an n-th lens (L4), the lens assembly (LA) may be understood to include the film portions (F1, F2)(s) and / or the beam splitter (204) of FIG. 5. For example, the first film portion (L1) of FIG. 5 may be disposed on the second lens surface (LS2) (e.g., the display (D) side) of the first lens (L1), and the second film portion (F2) may be disposed on the eye-side surface of the third lens (L3). In one embodiment, the beam splitter (204) of FIG. 5 may be disposed on any one of the lens surfaces of the second lens (L2). In one embodiment, the beam splitter (204) of FIG. 5 may be understood to be positioned between the first lens (L1) and the second lens (L2) of FIG. 6 or between the second lens (L2) and the third lens (L3) of FIG. 6. As a result, the lens assembly (LA) can be externally miniaturized while ensuring a sufficient length of the light path from the display (D) to the user's eye (RE).

[0110] FIG. 7 is a drawing illustrating a display (D) of a display device (401, 402) and / or an electronic device (400) including the same according to one embodiment. FIG. 8 is a drawing for explaining an angle of view (or viewing angle) of a display device (401, 402) and / or an electronic device (400) including the same according to one embodiment.

[0111] In one embodiment, also referring to FIGS. 7 and 8, the display (D) is aligned with the optical axis (O), and an area visually recognized by the user (hereinafter, 'perception area (IA)') may be an area indicated by 'IA'. For example, in FIG. 7, the reference numeral 'D' of the display (D) may actually exemplify an active area of ​​the display (D), and the perception area (IA) among the areas indicated by 'D' may exemplify an area that can be visually recognized by the user at a specified point in time. Here, 'the display (D) is aligned with the optical axis (O)' may refer to a state in which the optical axis (O) of the lens assembly (LA) is positioned at a point where the diagonals of the display (D) intersect each other. In FIG. 7, 'DSP' may exemplify a diagonal length of the display (D), and the maximum height of the display (D) may be understood to be half of the diagonal length (DSP) of the display (D).

[0112] In one embodiment, furthermore, referring to FIG. 7 or FIG. 8, the half-angle(s) of view in the horizontal or vertical field of view of the 'RVh', 'LVh', 'LVp' and / or 'UVp' user are illustrated in plan view. When the angle of view of the display device (401, 402)(s) is approximately 110 degrees, the half-angle(s) of view can be understood as approximately 55 degrees. However, the angle of view or the half-angle of view of the display device (401, 402)(s) may be different from the mentioned values ​​depending on the specifications of the display (D) and / or the lens assembly (LA). In one embodiment, 'RVh' may exemplify the right angle of view in the horizontal field of view, 'LVh' may exemplify the left angle of view in the horizontal field of view, 'LVp' may exemplify the lower angle of view in the vertical field of view, and / or 'UVp' may exemplify the upper angle of view in the vertical field of view. In one embodiment, the closer the display (D) is positioned to the user's eyes, the smaller it becomes, allowing it to provide a screen that matches the user's binocular field of view in virtual reality or augmented reality implementations. To guide or focus the screen output from the display (D) to the user's eyes, the lens assembly (LA) may have a specified size or overall length.

[0113] In general, a user's horizontal monocular field of view is approximately 150 degrees, and when using both eyes, it is known that the user has a field of view of approximately 200 degrees in the horizontal field of view. In addition, the binocular field of view, where the left eye field of view and the right eye field of view overlap, is known to be approximately 120 degrees. The figures mentioned regarding the field of view are merely exemplary, and those skilled in the art will readily understand that there may be differences depending on the user's facial shape or the relative positions and distances between the right and left eyes. The field of view that the display device (401, 402)(s) can provide through a combination of the display (D) and / or the lens assembly (LA) may generally be approximately 120 degrees. For example, in order to satisfy the horizontal field of view and the binocular field of view of the user when using both eyes, and the monocular fields of view of each of the user's left and right eyes, the electronic device (400) may include a plurality of display devices (401, 402).

[0114] In the embodiments described below, an embodiment may be mentioned in which the display (D) moves with respect to the lens assembly (LA) to secure an appropriate angle of view depending on the deviation of the user's binocular field of view due to the user's physical condition or the difference in the wearing condition. However, the present invention is not limited thereto, and the display (D) may be understood to be substantially fixed with respect to the lens assembly (LA). For example, the display (D) may be fixed with respect to the lens assembly (LA) in a state in which the center of the display (e.g., the point where the diagonals intersect) is positioned at a specified distance from the optical axis (O) of the lens assembly (LA). In a structure in which the display (D) is fixed with respect to the lens assembly (LA), the distance from the center of the display (D) to the optical axis (O) of the lens assembly (LA) may satisfy the condition of [Mathematical Formula 1] described below. In one embodiment, when a person's binocular field of view is within an angle of approximately 135 degrees, the first display device (401) and the second display device (402) can be combined to implement an angle of view of approximately 140 degrees or more. In this embodiment, when the display (D) has a fixed structure with respect to the lens assembly (LA) and satisfies the condition of [Mathematical Formula 1] described below, even if the display (D) does not have a structure that moves with respect to the lens assembly (LA), the electronic device (400) can provide a good quality image, for example, an image with suppressed heterogeneity in virtual reality or extended reality.

[0115] According to one embodiment, when providing a virtual image to a display device (401, 402) positioned at a relatively close distance to a user's eye (RE), the angle of view of the display device (401, 402) that matches the user's field of view can be calculated by an appropriate size (e.g., eye box) for the user to identify the virtual image at a given distance, a distance between the user's eye and the lens assembly (LA) (e.g., the lens surface of the closest lens) (e.g., eye relief), and / or a diameter of the lens assembly (LA) (e.g., the largest outer diameter among the lens outer diameters of the lens assembly (LA)). When the angle of view that matches the user's field of view is determined or calculated, the distance between the display (D) and the lens assembly (LA) and / or the size of the display (D) can be determined. This will be described with reference to conditions presented through the embodiments and mathematical formulas described below.

[0116] In one embodiment, when the display devices (401, 402) are positioned at a relatively close distance to the user's eyes, such as in a head-mounted wearable device, it may be difficult to harmonize the angle of view of the display devices (401, 402) with the user's field of view. Therefore, as mentioned above, the electronic device (400) may provide images for augmented reality, virtual reality, mixed reality, and / or extended reality interfaces by including a plurality of display devices (401, 402) corresponding to the user's two eyes. In positioning these plurality of display devices (401, 402), the specifications regarding the angle of view of the display devices (401, 402), and / or the size (or shape) and weight considering the wearing comfort may be taken into consideration by the user.

[0117] According to one embodiment, when a plurality of displays (D) corresponding to the user's binocular vision are arranged within an electronic device (400), a high-quality virtual reality or extended reality can be realized when a field of view performance suitable for the user's binocular vision is provided. The display devices (401, 402) may be arranged adjacent to each other within the electronic device (400) or on the user's face while having a field of view of approximately 120 degrees or less (e.g., approximately 110 degrees or approximately 100 degrees). In this embodiment, when the field of view between the display devices (401, 402) overlaps by an angle of approximately 80 degrees or more, a sense of discomfort or incongruity felt by the user when implementing virtual reality or extended reality can be suppressed. For example, by combining two display devices (401, 402), the electronic device (400) can provide a screen with a field of view larger than the user's binocular vision angle. As a result, a sense of incongruity felt by the user due to the screen provided when implementing virtual reality or extended reality can be suppressed.

[0118] According to one embodiment, the angle of view of the image provided by the combination of the display devices (401, 402) may be smaller than the binocular field of view of the user. For example, even if the physical conditions of the users (e.g., the binocular field of view in the horizontal plane) are different, the larger the angle of view of the display devices (401, 402), the more realistic quality virtual reality images or extended reality images can be provided to various users. In one embodiment, even if the electronic device (400) satisfies the physical conditions of the user's binocular field of view, it may not provide satisfactory virtual reality images or extended reality images to other users. According to one embodiment, in the electronic device (400) and / or the display device (401, 402), the display (D) is movably arranged with respect to the lens assembly (LA), thereby implementing various angles of view. For example, the display (D) may be moved in a direction intersecting the direction in which the screen is output, or in a direction intersecting the optical axis (O), thereby adjusting the viewing angle of the electronic device (400) and / or the display device (401, 402). In one embodiment, 'movement of the display (D)' may be understood as a horizontal movement (S) in a specified plane, or a rotation or tilt operation around a specified axis.

[0119] In one embodiment, the display (D) can move horizontally (S) relative to the lens assembly (LA) in a plane substantially perpendicular to the optical axis (O). In another embodiment, the display (D) can move horizontally (S) in at least two directions in a plane intersecting the optical axis (O). In another embodiment described below, a configuration in which the display (D) of the first display device (401) and the display (D) of the second display device (402) move toward or away from each other may be exemplarily mentioned. However, the present invention is not limited to the directions mentioned in the embodiments, and the direction of movement of the display (D) relative to the lens assembly (LA) may be combined in various ways depending on the specifications and shape of the electronic device (400) to be actually manufactured. The movement of these displays (D)(s) can be understood as an operation for adjusting the angle of view of the electronic device (400) and / or the display devices (401, 402), and in one embodiment, the movement of the displays (D)(s) can be understood as adjusting the direction in which the screen output from the displays (D)(s) is focused.

[0120] In one embodiment, the displays (D) may be arranged substantially symmetrically within the electronic device (400) or on the user's face, and in such an embodiment, the movement of the displays (D) may be line-symmetrical. For example, the axis of symmetry associated with the line-symmetrical movement of the displays (D) may be understood to be substantially parallel to the user's nose. In another embodiment, the axis of symmetry associated with the line-symmetrical movement of the displays (D) may be understood to be, for example, intersecting the Z-axis or the X-axis of FIG. 13 and parallel to the Y-axis.

[0121] FIG. 9 is a drawing illustrating an example of a display (D) moved in a display device (401, 402) and / or an electronic device (400) including the same according to one embodiment. FIG. 10 is a drawing illustrating a position of a display (D) before / after moving in a display device (401, 402) and / or an electronic device (400) including the same according to one embodiment. FIG. 11 is a drawing for explaining an angle of view (or viewing angle) according to a movement of a display (D) of a display device (401, 402) and / or an electronic device (400) including the same according to one embodiment.

[0122] In FIGS. 9 and 10, reference numeral 'RP' exemplifies the position of the display (D) aligned with the optical axis (O). For example, the display (D) in the first display device (401) can horizontally move (S) away from the second display device (402). Due to this horizontal movement (S), the half-field angle, for example, the right field of view angle (RVh1) in the first display device (401) can increase, and the left field of view angle (LVh1) can decrease as much as the right field of view angle (RVh1) increases. When the right field of view angle (RVh1) in the first display device (401) increases, the left field of view angle can increase in the second display device (402). Such an increase or decrease in the half-field angle can be implemented when the displays (D) of the display devices (401, 402) move, as mentioned above. In one embodiment, when the display devices (401, 402) have a field of view of approximately 110 degrees (e.g., a half field of view of approximately 55 degrees), one of the left field of view angle (LVh1) and the right field of view angle (RVh1) can be increased to approximately 70 degrees, and the other of the left field of view angle (LVh1) and the right field of view angle (RVh1) can be decreased to approximately 40 degrees, depending on the relative movement of the display (D). In one embodiment, the display (D) can be moved in the Y-axis direction of FIG. 13 with respect to the lens assembly (LA), in which case the upper field of view angle (UVp) and / or the lower field of view angle (LVp) of the display (D) can be adjusted.

[0123] According to one embodiment, the display device (401, 402)(s) and / or the electronic device (400) including the same may satisfy the condition presented through the following [mathematical expression 1].

[0124]

[0125] Here, 'MD' is the distance between the optical axis (O) and the center of the display (D) or the movement distance of the display (D) with respect to the optical axis (O), which may be a distance measured along a direction perpendicular to the optical axis (O). In one embodiment, 'MD' may be understood to have a value of approximately '0 (zero)' when the center of the display (D) is aligned with the optical axis (O). In addition, 'DSP' may be the diagonal length (DSP) of the display (D), as illustrated in FIG. 7 or FIG. 10. In one embodiment, the diagonal length (DSP) of the display (D) may be in a range of approximately 1 inch or more and approximately 3 inches or less, and the display (D) may move with respect to the lens assembly (LA) within a range satisfying the condition of the above-described [Mathematical Formula 1].

[0126] In one embodiment, as mentioned above, when the angles of view of two adjacently arranged display devices (401, 402) overlap each other by approximately 80 degrees or more, it is possible to suppress discomfort or a sense of incongruity when experiencing a virtual reality or extended reality image while satisfying the user's field of view (VA). In addition, the calculated value of approximately '0.2', which can be said to be the maximum value among the calculated values ​​of [Mathematical Formula 1], can be understood as the maximum distance that the display (D) can move in the internal space of the electronic device (400), and in one embodiment, it can be understood as a value that can maintain a state in which the angles of view of two adjacently arranged display devices (401, 402) overlap by approximately 80 degrees or more.

[0127] According to one embodiment, when the display (D) provides an image having a quality satisfactory to the user while being aligned with the optical axis (O), the display (D) may not substantially move with respect to the lens assembly (LA). Nevertheless, the calculated value of '0.02', which is described as the minimum value among the calculated values ​​of [Mathematical Formula 1], may be understood as the minimum value required to secure a significant difference in the field of view compared to the state where the MD value of [Mathematical Formula 1] is 0 (zero). In one embodiment, the calculated value of '0.02', which is described as the minimum value among the calculated values ​​of [Mathematical Formula 1], may be suggested in consideration of the user's request to secure an image having a further improved quality. In one embodiment, the display devices (401, 402) and / or the electronic device (400) including the same may be miniaturized or lightweight to provide a comfortable wearing experience by satisfying the condition of [Mathematical Formula 1]. In one embodiment, the display device (401, 402) and / or the electronic device (400) including the display device can increase user satisfaction in implementing virtual reality or extended reality by satisfying the condition of [Mathematical Formula 1].

[0128] According to one embodiment, the difference between the left field of view (LVh) and the right field of view (RVh) (or the upper field of view (UVp) and the lower field of view (LVp)) generated by the relative movement of the displays (D) may be in a range of about 0 degrees or more and about 20 degrees or less. In one embodiment, in order to secure an overlapping field of view between the two displays (D) to be about 80 degrees or more, the smaller field of view among the left field of view (LVh) and the right field of view (RVh) in one display (D) may be about 40 degrees or more. For example, in order to implement a field of view that matches a user's viewing angle (VA) by combining two display devices (401, 402), the left field of view (LVh) or the right field of view (RVh) in one display device (401, 402) may have different values, and the smaller half field of view among the left field of view (LVh) or the right field of view (RVh) may be about 40 degrees or more.

[0129] In one embodiment, the difference between the left field of view (LVh) and the right field of view (RVh) due to the relative movement of the display (D), 'DFOV' can be calculated by [Mathematical Formula 2] described below. In one embodiment, the difference between the left field of view and the right field of view is approximately '0 (zero)' when the center of the display (D) is aligned with the optical axis (O) of the lens assembly (LA), and the difference between the half-angles (e.g., the left field of view (LVh) or the right field of view (RVh)) when the center of the display (D) is moved by the maximum distance allowed for the display (D) from the position aligned with the optical axis (O) of the lens assembly (LA) can be understood to be 20 degrees or less. As mentioned above, the difference between the left field of view (LVh) and the right field of view (RVh) due to the relative movement of the display (D), 'DFOV' can be calculated by [Mathematical Formula 2] described below.

[0130]

[0131] Here, 'FOV' may refer to an angle of view implemented by a display device (401, 402), for example, a lens assembly (LA). 'MD' may refer to a movement distance of the display (D) (or a distance from the optical axis (O) to the center of the display (D)), and 'DSP' may refer to a diagonal length (DSP) of the display (D). For example, [Mathematical Formula 2] may be understood as arithmetically defining a deviation of a half-angle of view (e.g., a difference between a left angle of view (LVh) and a right angle of view (RVh)) caused by a movement of the display (D) based on pixel(s) aligned with the optical axis (O). Although omitted in the above [Mathematical Formula 2], the distortion coefficient may be further considered when calculating the deviation of the half-angle, and the distortion coefficient may be a coefficient that considers the relative position of each pixel(s) from the optical axis (O) measured on the display (D) when the left viewing angle (LVh) and the right viewing angle (RVh) are the same (e.g., the distance from the optical axis (O)). The distortion coefficient of each pixel may be generally proportional to the distance from the optical axis (O) on the display (D). For example, when the center of the display (D) is aligned with the optical axis (O), the distortion coefficient of the pixel(s) located on the optical axis (O) is approximately 'O(zero)', so that there may be substantially no deviation between the left viewing angle (LVh) and the right viewing angle (RVh).

[0132] According to one embodiment, in providing visual information to a user perception area (IA) of the same size, the closer the display (D) is positioned to the user's eyes, the easier it is to miniaturize the display (D). In one embodiment, a specified distance may be provided between the display (D) and the user's eyes for positioning the lens assembly (LA), and at least three lenses (L1, L2, L3, L4) may have a specified size (e.g., outer diameter) for mechanical processing or forming into a designed shape. In one embodiment, good aberration performance may be implemented when the display (D) and the lens assembly (LA) are positioned at a sufficiently large distance, regardless of the sizes of the display (D) and the lens assembly (LA). For example, when the display (D) and the lens assembly (LA) are positioned at a sufficiently large distance, conditions are created where light output from the display (D) can be incident on the lens assembly (LA) and the optical axis (O) in a substantially parallel fashion, thereby improving the optical performance of the lens assembly (LA) or the display device (401, 402). However, in an electronic device (400) that is worn on the body, it may be difficult to secure good aberration performance by positioning the display (D) far from the lens assembly (LA).

[0133] According to one embodiment, the display device (401, 402) and / or the electronic device (400) can be easily miniaturized and have good optical performance (e.g., aberration control performance) by satisfying the conditions presented through the following [Mathematical Formula 3].

[0134]

[0135] Here, 'LD' is the outer diameter of the lens with the largest outer diameter among at least three lenses (L1, L2, L3, L4), which can be understood as the outer diameter of the second lens (L2) in the illustrated embodiment. 'DSP' is the diagonal length (DSP) of the display (D), and 'TTL' is the total lens length, which can be the distance from the first lens surface (LS1) (e.g., the eye-side surface) of the first lens (L1) to the display (D). By satisfying the condition presented through [Mathematical Formula 3], the display device (401, 402)(s) can secure a good angle of view, and can provide an environment in which aberration control is easy by reducing the angle at which the light output from the display (D) is incident on the lens(es) or the inclination angle with respect to the optical axis (O). In one embodiment, the display (D) may be implemented as an ultra-high definition display (D) element having a diagonal length (DSP) in the range of about 1 inch or more and about 3 inches or less, and a resolution of about 2500*1400 pixels or more (e.g., about 3000*3000 pixels or more and / or about 3840*3840 pixels or more). In one embodiment, when the lens assembly (LA) satisfies the condition of [Mathematical Formula 3], it was confirmed that the above-described condition can be satisfied even if 'LD' of [Mathematical Formula 3] is applied as the effective diameter of the lens with the largest outer diameter among at least three lenses (L1, L2, L3, L4), as described in [Table 1] below.

[0136] LDDSPTTL[Mathematical Formula 3] Calculated value Outer diameter Effective diameter Lens assembly 14134180.3894434180.556 Lens assembly 23934210.2384334200.450 Lens assembly 33934210.2384334200.450 Lens assembly 43426150.5333626150.667

[0137] In one embodiment, the display (D) may have a diagonal length (DSP) of about 1.5 inches or less and a resolution of about 2500*1400 pixels or more (e.g., about 3000*3000 pixels or more and / or about 3840*3840 pixels or more). In this embodiment, the lens assembly (LA) may include four plastic lenses and implement a display device (401, 402) of about 20 mm or less. In one embodiment, the display (D) has a diagonal length (DSP) of about 1.5 inches or less, a resolution of about 2500*1400 pixels or more (e.g., about 3000*3000 pixels or more and / or about 3840*3840 pixels or more), and when combined with four plastic lenses, implements a display device (401, 402) of about 20 mm or less, and can provide an angle of view or image that satisfies the binocular field of view of a user. In one embodiment, the numerical value of 'about 20 mm or less' mentioned as the length of the display device (401, 402) refers to the lens total length, 'TTL' of [Mathematical Formula 3], and may be a value measured from the optical axis (O) between the eye-side surface of the first lens (L1) (e.g., the first lens surface (LS1)) and the display (D). In one embodiment, the lens length or length of the display device (401, 402) may be implemented to be approximately 10 mm or more, including at least three lenses (L1, L2, L3, L4).

[0138] Accordingly, when light is incident on the lens(es) at a small angle (or substantially parallel) to the optical axis (O), aberration control in the display device (401, 402) and / or the electronic device (400) can be facilitated. In one embodiment, since the display device (401, 402) and / or the electronic device (400) including the same satisfy the condition of [Mathematical Formula 3], aberration control in the lens assembly (LA) can be facilitated when the display (D) is arranged adjacent to the lens assembly (LA). For example, [Mathematical Formula 3] defines the angle at which light output from the display (D) in the miniaturized lens assembly (LA) and / or the display device (401, 402)(s) is incident on the lens(es), thereby suppressing the sense of incongruity felt by the user in implementing virtual reality or extended reality and providing an image with improved quality. In one embodiment, the displays (D) are arranged parallel to one side of each other and can move in a direction toward or away from each other. In one embodiment, the 'movement toward each other' can be understood as the displays (D) moving away from the user's nose and closer to the user's temple or ear. In one embodiment, the field of view of the first display device (401) and the overlapping field of view of the second display device (402) can be adjusted according to the movement of the displays (D). In one embodiment, the displays (D)(s) can move based on the relative positions of the user's eyes (RE) and the displays (D)(s) detected by a separate sensor, or based on user input.

[0139] The above-described embodiments may be understood as generally exemplifying the configuration of the display devices (401, 402) and / or the electronic device (400) including the same in the user's horizontal field of view. However, the present invention is not limited to the above-described embodiments, and the angle of view (or half-angle of view (UVp, LVp)) in the vertical field of view may be adjusted, or the angle of view (or half-angle of view) may be adjusted by a rotation or tilt operation of the display (D). In one embodiment, an additional embodiment may be implemented in which the angle of view (or half-angle of view) is adjusted by combining the movement in the horizontal direction (or the movement in the vertical direction) and the rotation operation (or the tilt operation). Regarding the angle of view adjustment in the vertical field of view or the angle of view adjustment using the rotation operation (or the tilt operation), reference will be made to FIGS. 12 to 16. In examining the embodiments described below, the electronic device (400) of FIG. 6 may be further referred to.

[0140] FIG. 12 is a drawing illustrating an example of a display (D) moving in a different direction in a display device (401, 402) and / or an electronic device (400) including the same according to one embodiment.

[0141] In one embodiment, also referring to FIG. 12, the display (D) may be moved in a vertical direction (e.g., in the Y-axis direction) from a position aligned with the optical axis (O), for example, a position indicated by reference numeral 'RP', such that the angle of view of the display device (401, 402) and / or the electronic device (400) may be adjusted. In one embodiment, a configuration may be exemplified in which the display (D) is moved downward from the optical axis (O) alignment position, RP, as in the illustrated embodiment. In one embodiment, the display (D) may be moved upward from the optical axis (O) alignment position RP.

[0142] In the above-described embodiment, it was mentioned that the angles of view of the first display device (401) and the second display device (402) overlap by approximately 80 degrees or more. In the embodiment of FIG. 12, the horizontal distance between the first display device (401) and the second display device (402) can be substantially maintained at the initial setting state, so that even if the displays (D) are moved in the vertical direction, the overlapping angles of view of the display devices (401, 402) can be maintained the same as the initial setting state. In one embodiment, depending on the vertical movement, the height of the displays (D)(s) with respect to the user's eyes can change, and in this embodiment, the distance between the displays (D) can be adjusted in proportion to the height of the displays (D)(s) with respect to the user's eyes. For example, since the horizontal viewing angle can increase (or decrease) as the user's line of sight becomes higher or lower than a reference state, the spacing between the displays (D) can be controlled depending on the relative height of the displays (D)(s) with respect to the user's eyes (RE).

[0143] FIG. 13 is a diagram for explaining a rotation or tilt operation of a display (D) in a display device (401, 402) and / or an electronic device (400) including the same according to one embodiment. FIG. 14 is a diagram for illustrating a state in which a display (D) is rotated or tilted around the X-axis in a display device (401, 402) and / or an electronic device (400) including the same according to one embodiment. FIG. 15 is a diagram for illustrating a state in which a display (D) is rotated or tilted around the Y-axis in a display device (401, 402) and / or an electronic device (400) including the same according to one embodiment. FIG. 16 is a diagram for illustrating a state in which a display (D) is rotated or tilted around the Z-axis in a display device (401, 402) and / or an electronic device (400) including the same according to one embodiment.

[0144] In one embodiment, further, referring to FIGS. 13 to 16, a rotation or tilt operation of the display (D) is exemplified, where the X-axis of FIG. 13 may exemplify, for example, a horizontal direction on the user's face, a direction in which the user's eyes are aligned, the Y-axis may exemplify a vertical direction on the user's face, and the Z-axis may exemplify a direction in which the user's eyes are gazed. When the electronic device (400) is worn on the user's face, the display (D)(s) may provide image information to the user by outputting a screen in a first direction, for example, a -Z direction. In one embodiment, the display (D) may be rotated or tilted around at least one axis of the X-axis, the Y-axis, and / or the Z-axis. In one embodiment, a rotation or tilt motion of the display (D) about the X-axis may be understood as a pitching motion (R1), a rotation or tilt motion of the display (D) about the Y-axis may be understood as a yawing motion (R2), and / or a rotation or tilt motion of the display (D) about the Z-axis may be understood as a rolling motion (R3). The rotation or tilt motions (R1, R2, R3) of the display (D) may be optionally combined with a horizontal movement (S) of the display (D) as in FIG. 9 or a vertical movement of the display (D) as in FIG. 12.

[0145] In one embodiment, the pitching motion (R1) of the display (D) can implement a viewing angle adjustment function similar to a vertical movement of the display (D) as in FIG. 12, for example. In one embodiment, the yaw motion (R2) of the display (D) can implement a viewing angle adjustment function similar to a horizontal movement of the display (D) as in FIG. 9, for example. In one embodiment, the rolling motion (R3) of the display (D) can implement a viewing angle adjustment function similar to a combination of vertical movement or horizontal movement of the display (D). In one embodiment, the pitching motion (R1), the yaw motion (R2), and / or the rolling motion (R3) can be implemented at an angle within approximately 6 degrees from the position of the display (D) as shown in FIG. 6 and / or the optical axis (O) alignment position (RP) as shown in FIG. 12.

[0146] According to one embodiment, when the internal space of the display device (401, 402)(s) (and / or the electronic device (400)) is so narrow that the maximum value of the output value according to [Mathematical Formula 1], which is approximately 0.2, cannot be allowed, the angle of view adjustment structure implemented through [Mathematical Formula 1] can be implemented by rotating or tilting the display (D). In one embodiment, the display device (401, 402)(s) (and / or the electronic device (400)) can additionally perform a rotation or tilt operation while satisfying the condition of [Mathematical Formula 1] in horizontal movement and / or vertical movement. For example, when a plurality of display devices (401, 402) are combined to implement an angle of view that satisfies a user's binocular field of view, the additional rotation or tilt operation can further expand the adjustment range of the angle of view (or half angle of view). In expanding the range of adjustment of the angle of view or the angle of view of the second display device (402), it should be noted that the angle of view implemented by overlapping the first display device (401) and the second display device (402) should be maintained at approximately 80 degrees or more. In one embodiment, the angle of view of the display device (401, 402)(s) can be adjusted by selectively combining at least two of the horizontal movement of FIG. 9, the vertical movement of FIG. 12, and / or the rotational operations of FIGS. 13 to 16.

[0147] As described above, the display device according to one embodiment (e.g., the display module (160) of FIG. 1 or the display device (401, 402)(s) of FIG. 6) and / or the electronic device including the same (e.g., the electronic device (101, 400) of FIG. 1 or FIG. 6, and / or the wearable electronic device (200, 300) of FIGS. 2 to 5) can implement an angle of view that satisfies the user's viewing angle when outputting a virtual reality image or an extended reality image while being miniaturized. For example, the display device according to one embodiment and / or the electronic device including the same can reduce user fatigue by providing a comfortable fit and suppressing a sense of incongruity felt by the user when watching a virtual reality image or an extended reality image. According to one embodiment, when a display (e.g., display (D, 331) of FIGS. 2 to 6) is movably positioned relative to a lens assembly (e.g., lens assembly (LA) of FIG. 6), a virtual reality image or an extended reality image can be provided with an angle of view suitable for the individual user, even if there is a deviation in the binocular field of view due to physical differences of the individual user.

[0148] According to one embodiment, a display device (e.g., a display module (160) of FIG. 1 or a display device (401, 402)(s) of FIG. 6) may include a display (e.g., a display (D, 331) of FIGS. 2 to 6) configured to output a screen output along a first direction, and a lens assembly (e.g., a lens assembly (LA) of FIG. 6) including at least three lenses (e.g., lenses (L1, L2, L3, L4)(s) of FIG. 6) sequentially aligned along an optical axis (e.g., an optical axis (O) of FIG. 6)) configured to focus or guide a screen output from the display to a designated direction or a designated position. In one embodiment, the lens assembly may be configured to reflect the screen output from the display at least twice between a first lens (e.g., a first lens (L1) of FIG. 6) disposed farthest from the display among the at least three lenses and an nth lens (e.g., a fourth lens (L4) of FIG. 6) disposed closest to the display among the at least three lenses. In one embodiment, the display may be arranged to be movable in a direction intersecting the first direction or in a direction intersecting the optical axis. In one embodiment, such a display device may satisfy the following [Conditional Expression 1] regarding a diagonal length 'DSP' of the display and a distance 'MD' measured along a direction perpendicular to the optical axis as a distance from the optical axis to the center of the display. [Conditional Expression 1] is as follows:

[0149] [Condition 1]

[0150] 0.02 <= MD / DSP <= 0.2

[0151] According to one embodiment, the lens assembly may include at least one quarter wave plate (e.g., the quarter wave plate (203, 205) of FIG. 5), at least one reflective polarizer (e.g., the reflective polarizer (202) of FIG. 5), or at least one beam splitter (e.g., the beam splitter (204) of FIG. 5) disposed between the first lens and the n-th lens.

[0152] According to one embodiment, the first lens may include a first lens surface (e.g., the first lens surface (LS1) of FIG. 6) and a second lens surface (e.g., the second lens surface (LS2) of FIG. 6) arranged opposite the first lens surface to face the display. In one embodiment, the display device may further satisfy the following [Conditional Expression 2] regarding the largest outer diameter 'LD' among the outer diameters of the at least three lenses, the diagonal length of the display, and the distance 'TTL' measured from the display to the first lens surface of the first lens on the optical axis. [Conditional Expression 2] is as follows:

[0153] [Condition 2]

[0154] 0.2 <= (LD-DSP) / TTL <= 0.7

[0155] According to one embodiment, the display device as described above can be configured to adjust the difference between the left and right viewing angles in a range of approximately 0 degrees or more and approximately 20 degrees or less by moving the display.

[0156] According to one embodiment, the smaller of the left angle and the right angle may be approximately 40 degrees or more.

[0157] In one embodiment, the first lens may include a first lens surface and a second lens surface arranged opposite the first lens surface so as to face the display. In one embodiment, a distance measured from the optical axis from the first lens surface to the display may be about 10 mm or more and about 20 mm or less.

[0158] In one embodiment, the diagonal length of the display may be in a range of about 1 inch or more and about 3 inches or less.

[0159] In one embodiment, the display may be configured to rotate or tilt relative to the lens assembly.

[0160] According to one embodiment, the display may be configured to move in at least two directions in a plane intersecting the optical axis.

[0161] According to one embodiment, the display device as described above may include a pair of the displays disposed on one side of each other, and a pair of the lens assemblies disposed on one side of each other.

[0162] In one embodiment, a pair of said displays may be configured to move away from or toward each other.

[0163] According to one embodiment, the display device as described above may be configured to adjust the difference between the left viewing angle and the right viewing angle within a range of approximately 0 degrees or more and approximately 20 degrees or less by moving the display. In this case, the smaller of the left viewing angle and the right viewing angle may be approximately 40 degrees or more.

[0164] According to one embodiment, the display may have a resolution of approximately 3000*3000 pixels or more.

[0165] According to one embodiment, an electronic device (e.g., an electronic device (101, 400) of FIG. 1 or FIG. 6, and / or a wearable electronic device (200, 300) of FIGS. 2 to 5) may include a first display device (e.g., a first display device (401) of FIG. 6), and a second display device (e.g., a second display device (402) of FIG. 6) disposed on one side of the first display device. In one embodiment, at least one of the first display device and the second display device may include a display configured to output a screen output along a first direction (e.g., a display (D, 331) of FIGS. 2 to 6), and a lens assembly (e.g., a lens assembly (LA) of FIG. 6) including at least three lenses (e.g., lenses L1, L2, L3, L4)(s) of FIG. 6) that are sequentially aligned along an optical axis (e.g., an optical axis (O) of FIG. 6) and configured to focus or guide a screen output from the display in a designated direction or a designated position. In one embodiment, the lens assembly may be configured to reflect a screen output from the display at least twice between a first lens (e.g., a first lens (L1) of FIG. 6) that is disposed farthest from the display among the at least three lenses and an n-th lens (e.g., a fourth lens (L4) of FIG. 6) that is disposed closest to the display among the at least three lenses. In one embodiment, the display may be arranged to be movable in a direction intersecting the first direction or in a direction intersecting the optical axis. In one embodiment, the electronic device, the first display device, and / or the second display device may satisfy the following [Conditional Expression 1] and [Conditional Expression 2].

[0166] [Condition 1]

[0167] 0.02 <= MD / DSP <= 0.2

[0168] [Condition 2]

[0169] 0.2 <= (LD-DSP) / TTL <= 0.7

[0170] Here, 'DSP' is a diagonal length of the display, 'MD' is a distance from the optical axis to the center of the display, which is a distance measured along a direction perpendicular to the optical axis, 'LD' is a largest outer diameter among the outer diameters of the at least three lenses, and 'TTL' is a distance from the display to the first lens surface of the first lens (e.g., the first lens surface (LS1) of FIG. 6)) along the optical axis, wherein the first lens surface may refer to a surface of the lens surfaces of the first lens that is arranged in an opposite direction to a surface facing the display (e.g., the second lens surface (LS2) of FIG. 6).

[0171] According to one embodiment, the first display device or the second display device may be configured to adjust the difference between the left and right viewing angles in a range of approximately 0 degrees or more and approximately 20 degrees or less by moving the display.

[0172] According to one embodiment, the smaller of the left angle and the right angle may be approximately 40 degrees or more.

[0173] In one embodiment, the first lens may include a first lens surface and a second lens surface arranged opposite the first lens surface so as to face the display. In one embodiment, a distance measured from the first lens surface to the display along the optical axis may be greater than or equal to about 10 mm and less than or equal to about 20 mm.

[0174] In one embodiment, the diagonal length of the display may be greater than or equal to 1 inch and less than or equal to 3 inches.

[0175] In one embodiment, the display may be configured to rotate or tilt relative to the lens assembly.

[0176] According to one embodiment, the display included in the first display device and the display included in the second display device may be configured to move in a direction away from or toward each other.

[0177] According to one embodiment, the lens assembly may include at least one quarter wave plate (e.g., the quarter wave plate (203, 205) of FIG. 5), at least one reflective polarizer (e.g., the reflective polarizer (202) of FIG. 5), or at least one beam splitter (e.g., the beam splitter (204) of FIG. 5) disposed between the first lens and the n-th lens.

[0178] While the embodiments of the present invention have been described by way of example, it should be understood that these embodiments are intended to be illustrative and not limiting. It will be apparent to those skilled in the art that various changes in form and detailed configuration may be made without departing from the overall scope of the present invention.

Claims

1. In the display device (160; 401, 402), A display (D; 331) configured to output screen output along a first direction; and A lens assembly (LA) including at least three lenses (L1, L2, L3, L4) arranged sequentially along an optical axis (O) and configured to focus or guide the screen output to a designated direction or a designated location, wherein the lens assembly is configured to reflect the screen output from the display at least twice between a first lens (L1) arranged farthest from the display among the at least three lenses and an nth lens (L4) arranged closest to the display among the at least three lenses, The above display is arranged to be movable in a direction intersecting the first direction or in a direction intersecting the optical axis, A display device satisfying [Conditional Expression 1] regarding the diagonal length ('DSP') of the display and the distance ('MD') measured along a direction perpendicular to the optical axis from the optical axis to the center of the display. [Condition 1] 0.02 <= MD / DSP <= 0.2 2. In the first paragraph, the lens assembly is a display device including at least one quarter wave plate (203, 205), at least one reflective polarizer (202), or at least one beam splitter (204) arranged between the first lens and the nth lens.

3. In any one of claims 1 to 2, the first lens includes a first lens surface (LS1) and a second lens surface (LS2) arranged in an opposite direction to the first lens surface and facing the display. A display device further satisfying [Conditional Expression 2] regarding the largest outer diameter ('LD') of the at least three lenses, the diagonal length ('DSP') of the display, and the distance ('TTL') measured from the optical axis to the first lens surface of the first lens from the display. [Condition 2] 0.2 <= (LD-DSP) / TTL <= 0.7 4. A display device configured to adjust the difference between the left and right viewing angles within a range of about 0 degrees or more and about 20 degrees or less by moving the display in any one of claims 1 to 3.

5. A display device in the fourth paragraph, wherein the smaller angle of view among the left angle of view and the right angle of view is approximately 40 degrees or more.

6. In any one of claims 1 to 5, the first lens includes a first lens surface and a second lens surface arranged in an opposite direction to the first lens surface to face the display, A display device wherein the distance measured from the optical axis from the first lens surface to the display is approximately 10 mm or more and approximately 20 mm or less.

7. A display device according to any one of claims 1 to 6, wherein the diagonal length (DSP) of the display is in a range of about 1 inch or more and about 3 inches or less.

8. A display device according to any one of claims 1 to 7, wherein the display is configured to rotate or tilt with respect to the lens assembly.

9. A display device according to any one of claims 1 to 8, wherein the display is configured to move in at least two directions in a plane intersecting the optical axis.

10. A display device according to any one of claims 1 to 9, comprising a pair of the displays arranged parallel to each other on one side of the display, and a pair of the lens assemblies arranged parallel to each other on one side of the display.

11. A display device in accordance with claim 10, wherein a pair of displays are configured to move in a direction away from or closer to each other.

12. In any one of claims 1 to 11, the display is a display device having a resolution of approximately 3000*3000 pixels or more.

13. In electronic devices (101; 200; 300; 400), a first display device (401); and Including a second display device (402) arranged on one side of the first display device, At least one of the first display device or the second display device An electronic device comprising a display device according to any one of claims 1 to 12.

14. An electronic device in accordance with claim 13, wherein the display included in the first display device and the display included in the second display device are configured to move in a direction away from or closer to each other.

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