Electronic device comprising coating layer arranged on display

Abstract

An electronic device according to one embodiment of the present disclosure may comprise: a housing; a display arranged on the housing; a plate including a display flat part and a curved part extending from the flat part; and a coating layer formed on one surface of the plate. The coating layer can include: a plurality of first coating layers having a first refractive index; and a plurality of second coating layers having a second refractive index, which is lower than the first refractive index. The plurality of first coating layers and the plurality of second coating layers are alternately arranged, one from among the plurality of second coating layers forms a layer that is farthest from the plate, and the difference between the maximum reflectance and the minimum reflectance can be 2% or less with respect to light having a wavelength of 800 nm to 1200 nm at an incident angle of 0-70 degrees.

Description

Electronic device including a coating layer disposed on a display

[0001] Various embodiments of the present disclosure relate to an electronic device comprising a coating layer disposed on a display.

[0002] Driven by remarkable advancements in information and communication technology and semiconductor technology, the distribution and use of various electronic devices are increasing rapidly. In particular, recent electronic devices are being developed to enable portable communication.

[0003] The term "electronic device" may refer to a device that performs specific functions according to an installed program, ranging from home appliances to electronic notebooks, portable multimedia players, mobile communication terminals, tablet PCs, video / audio devices, desktop / laptop computers, and vehicle navigation systems.

[0004] For example, these electronic devices can output stored information as sound or video. As the integration density of electronic devices increases and ultra-high-speed, high-capacity wireless communication becomes commonplace, various functions can now be integrated into a single electronic device, such as a mobile communication terminal. For instance, not only communication functions but also entertainment functions like games, multimedia functions like music and video playback, communication and security functions for mobile banking, and functions such as schedule management and electronic wallets are being integrated into a single electronic device. These electronic devices are being miniaturized so that users can carry them conveniently.

[0005] The information described above may be provided as related art for the purpose of aiding understanding of the present disclosure. No claim or determination is made as to whether any of the foregoing may be applied as prior art related to the present disclosure.

[0006] An electronic device according to one embodiment of the present disclosure may include a housing, a display disposed on the housing, a plate comprising a flat portion of the display and a curved portion extending from the flat portion, and a coating layer formed on one surface of the plate. The coating layer may include a plurality of first coating layers having a first refractive index and a plurality of second coating layers having a second refractive index lower than the first refractive index. The plurality of first coating layers and the plurality of second coating layers are arranged alternately, and one of the plurality of second coating layers forms the layer furthest from the plate, and for light having a wavelength of 800 nm to 1200 nm at an incident angle of 0 to 70 degrees, the difference between the maximum reflectance and the minimum reflectance may be 2% or less.

[0007] The effects obtainable from the exemplary embodiments of the present disclosure are not limited to those mentioned above, and other unmentioned effects can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure belong from the description below. That is, unintended effects resulting from the implementation of the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

[0008] FIG. 1 is a block diagram of an electronic device in a network environment according to one embodiment disclosed in this document.

[0009] FIG. 2 is a perspective view looking toward the front of an electronic device according to one embodiment of the present disclosure.

[0010] FIG. 3 is a perspective view looking toward the rear of an electronic device according to one embodiment of the present disclosure.

[0011] FIG. 4 is an exploded perspective view looking toward the front of an electronic device according to one embodiment of the present disclosure.

[0012] FIG. 5 is an exploded perspective view looking toward the rear of an electronic device according to one embodiment of the present disclosure.

[0013] FIGS. 6a, 6b, and 6c are drawings illustrating, exemplarily, glass plate and housing structures in electronic devices according to various embodiments.

[0014] FIGS. 7a and 7b are schematic cross-sectional views illustrating the coating layer structure of an electronic device according to one embodiment.

[0015] FIG. 8 is a graph for explaining the characteristic structure of a coating layer of an electronic device according to one embodiment.

[0016] FIG. 9 is a graph for explaining the shift according to the difference in thickness of the coating layer of an electronic device according to one embodiment.

[0017] FIGS. 10a, FIGS. 10b, FIGS. 10c, and FIGS. 10d are graphs illustrating the change in reflectance according to the angle of incidence for a general coating layer and a coating layer of an electronic device according to one embodiment.

[0018] FIG. 11 is a graph illustrating a structure that reduces reflectance as the wavelength increases from a 0-degree incident angle of a coating layer of an electronic device according to one embodiment.

[0019] FIGS. 12a, FIGS. 12b, FIGS. 12c and FIGS. 12d are graphs illustrating the improved reflectance when the coating layer of an electronic device according to one embodiment is designed as shown in FIG. 11 at an incident angle of 0 degrees.

[0020] Figure 13 is a diagram illustrating that the angle of incidence changes at each position of the display depending on the user's line of sight.

[0021] FIG. 14 is a diagram illustrating the shift in a*b* color coordinates according to the difference in incident angle between a general coating layer and a coating layer according to one embodiment.

[0022] FIG. 15a is a front perspective view of an electronic device in a first state according to one embodiment.

[0023] FIG. 15b is a rear perspective view of an electronic device according to one embodiment.

[0024] FIG. 16 is a perspective view of an electronic device in a second state according to one embodiment.

[0025] FIG. 17 is an exploded view of a part of an electronic device according to one embodiment.

[0026] FIG. 18 is a diagram illustrating that the angle of incidence at each position of the display varies depending on the user's line of sight in a foldable electronic device according to one embodiment.

[0027] In the following description, the attached drawings are referenced, and specific examples of implementation are illustrated within the drawings. Additionally, other examples may be used and structural modifications may be made without departing from the scope of the various examples.

[0028] The various embodiments used to illustrate the principles of the present disclosure in FIGS. 1 through 18 disclosed below and in this patent document are for illustrative purposes only and should not be construed as limiting the scope of the present disclosure in any way. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any system or device appropriately arranged.

[0029] Hereinafter, embodiments of the present disclosure are described in detail with reference to the drawings so that those skilled in the art can easily practice them. However, the present disclosure may be embodied in various different forms and is not limited to the embodiments described herein. In relation to the description of the drawings, the same or similar reference numerals may be used for identical or similar components. Furthermore, in the drawings and related descriptions, descriptions of well-known functions and configurations may be omitted for clarity and brevity.

[0030] FIG. 1 is a block diagram of an electronic device in a network environment according to one embodiment disclosed in this document.

[0031] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) through a first network (198) (e.g., a short-range wireless communication network) or with an electronic device (104) or a server (108) through a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) through a server (108). According to one embodiment, the electronic device (101) may include a processor (120), memory (130), input module (150), sound output module (155), display module (160), audio module (170), sensor module (176), interface (177), connection terminal (178), haptic module (179), camera module (180), power management module (188), battery (189), communication module (190), subscriber identification module (196), or antenna module (197). In one embodiment, at least one of these components (e.g., connection terminal (178)) may be omitted from the electronic device (101), or one or more other components may be added. In one embodiment, some of these components (e.g., sensor module (176), camera module (180), or antenna module (197)) may be integrated into a single component (e.g., display module (160)).

[0032] The processor (120) can control at least one other component (e.g., hardware or software component) of the electronic device (101) connected to the processor (120) by executing software (e.g., program (140)), for example, and can perform various data processing or operations. According to one embodiment, as at least part of the data processing or operations, the processor (120) can store commands or data received from other components (e.g., sensor module (176) or communication module (190)) in volatile memory (132), process the commands or data stored in volatile memory (132), and store the resulting data in non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., central processing unit or application processor) or an auxiliary processor (123) that can operate independently or together with it (e.g., graphics processing unit, neural processing unit (NPU), image signal processor, sensor hub processor, or communication processor). For example, if the electronic device (101) includes a main processor (121) and an auxiliary processor (123), the auxiliary processor (123) may be configured to use lower power than the main processor (121) or to be specialized for a designated function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as part thereof.

[0033] The auxiliary processor (123) may control at least some of the functions or states associated with at least one component of the electronic device (101) (e.g., display module (160), sensor module (176), or communication module (190)) 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. According to one embodiment, the auxiliary processor (123) (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module (180) or communication module (190)). According to one embodiment, the auxiliary processor (123) (e.g., neural network processing unit) may include a hardware structure specialized for processing an artificial intelligence model. The artificial intelligence model may be generated through machine learning. Such learning may be performed, for example, on the electronic device (101) itself where the artificial intelligence is performed, or through a separate server (e.g., server (108)). The learning algorithm may 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 may include a plurality of artificial neural network layers.An artificial neural network may be 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 the hardware structure, the artificial intelligence model may include a software structure, either additionally or substantially.

[0034] The memory (130) can store various data used by at least one component of the electronic device (101) (e.g., processor (120) or sensor module (176)). The data may include, for example, input data or output data for software (e.g., program (140)) and related commands. The memory (130) may include volatile memory (132) or non-volatile memory (134).

[0035] The program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0036] The input module (150) can receive commands or data to be used for a component of the electronic device (101) (e.g., processor (120)) from outside the electronic device (101) (e.g., user). The input module (150) may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0037] The sound output module (155) can output a sound signal to the outside of the electronic device (101). The sound output module (155) may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as multimedia playback or recording playback. The receiver may be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part thereof.

[0038] The display module (160) can visually provide information to an external (e.g., user) of the electronic device (101). The display module (160) may include, for example, a display, a hall area-gram device, or a projector and a control circuit for controlling said 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 the force generated by said touch.

[0039] The audio module (170) can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150) or output sound through the sound output module (155) or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphones) connected directly or wirelessly to the electronic device (101).

[0040] The sensor module (176) can detect the operating state of the electronic device (101) (e.g., power or temperature) or the external environmental state (e.g., user state) and generate an electrical signal or data value corresponding to the detected state. According to one embodiment, the sensor module (176) may include, for example, a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0041] The interface (177) may support one or more specified protocols that can be used for the electronic device (101) to be connected directly or wirelessly to an external electronic device (e.g., electronic device (102)). According to 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.

[0042] The connection terminal (178) may include a connector through which the electronic device (101) can 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).

[0043] The haptic module (179) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that can be perceived by the user through tactile or kinesthetic senses. According to one embodiment, the haptic module (179) may include, for example, a motor, a piezoelectric element, or an electric stimulation device.

[0044] The camera module (180) can capture still images and video. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0045] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least part of a power management integrated circuit (PMIC).

[0046] The battery (189) can supply power to at least one component of the electronic device (101). According to one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0047] The communication module (190) can support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between an 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 include one or more communication processors that operate independently of the processor (120) (e.g., application processor) and 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., cellular communication module, short-range wireless communication module, or GNSS (global navigation satellite system) communication module) or a wired communication module (194) (e.g., LAN (local area network) communication module, or power line communication module). The corresponding communication module among these communication modules can communicate with an external electronic device (104) through a first network (198) (e.g., a short-range communication network such as Bluetooth, WiFi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network (199) (e.g., 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 may 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 identify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) using subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module (196).

[0048] The wireless communication module (192) can support 5G networks and next-generation communication technologies following 4G networks, for example, new radio access technology. NR access technology can support high-speed transmission of high-capacity data (enhanced mobile broadband (eMBB)), minimization of terminal power and connection of multiple terminals (massive machine type communications (mMTC)), or high reliability and low latency (ultra-reliable and low-latency communications (URLLC)). The wireless communication module (192) can support a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate, for example. The wireless communication module (192) can support various technologies for securing performance in the high-frequency band, such as beamforming, massive MIMO (multiple-input and multiple-output), 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), external electronic device (e.g., electronic device (104)), or network system (e.g., second network (199)). According to one embodiment, the wireless communication module (192) may support a Peak data rate (e.g., 20 Gbps or more) for eMBB realization, loss coverage (e.g., 164 dB or less) for mMTC realization, or U-plane latency (e.g., downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) for URLLC realization.

[0049] An antenna module (197) can transmit a signal or power to or from an external source (e.g., an external electronic device). According to one embodiment, the antenna module (197) may include an antenna comprising a radiator made of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to 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 a first network (198) or a second network (199), may be selected from the plurality of antennas, for example, by a communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. According to one embodiment, in addition to the radiator, other components (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module (197).

[0050] According to one embodiment, the antenna module (197) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent to a first surface (e.g., bottom surface) of the printed circuit board and capable of supporting a specified high frequency band (e.g., mmWave band), and a plurality of antennas (e.g., array antennas) disposed on or adjacent to a second surface (e.g., top surface or side surface) of the printed circuit board and capable of transmitting or receiving a signal of the specified high frequency band.

[0051] At least some of the above components can be connected to each other via a communication method between peripheral devices (e.g., bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)) and exchange signals (e.g., commands or data) with each other.

[0052] According to one embodiment, commands or data may be transmitted or received between an electronic device (101) and an external electronic device (104) through 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 performed on the electronic device (101) may be performed on one or more of the external electronic devices (102, 104, or 108). For example, if the electronic device (101) needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device (101) may request one or more external electronic devices to perform at least part of the function or service instead of performing the function or service itself or additionally. One or more external electronic devices that receive the above request may execute at least part of the requested function or service, or 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 provide the result as is or additionally processed as at least part of the response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device (101) may provide ultra-low latency services using, for example, distributed computing or mobile edge computing. In one embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server using machine learning and / or neural networks. According to one embodiment, the external electronic device (104) or the server (108) may be included within a 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.

[0053] FIG. 2 is a perspective view looking toward the front of an electronic device according to one embodiment of the present disclosure.

[0054] FIG. 3 is a perspective view looking toward the rear of an electronic device according to one embodiment of the present disclosure.

[0055] The components of the electronic device (101) of FIGS. 2 and 3 may be some or all identical to the components of the electronic device (101) of FIG. 1.

[0056] Referring to FIGS. 2 and 3, an electronic device (101) according to one embodiment (e.g., the electronic device (101) of FIG. 1) may include a housing (110) comprising a first surface (or front) (110A), a second surface (or rear) (110B), and a side (110C) surrounding the space between the first surface (110A) and the second surface (110B). In one embodiment (not shown), the housing (110) may refer to a structure forming some of the first surface (110A) of FIG. 2, the second surface (110B) of FIG. 3, and the side (110C).

[0057] According to one embodiment, the first surface (110A) may be formed by a front plate (102) in which at least a portion is substantially transparent (e.g., a glass plate containing various coating layers, or a polymer plate). The second surface (110B) may be formed by a rear plate (111) that is substantially opaque. The rear plate (111) may be formed by, for example, coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the above materials. The side surface (110C) may be formed by a side structure (or "side bezel structure") (118) that combines with the front plate (102) and the rear plate (111) and comprises metal and / or polymer. In one embodiment, the rear plate (111) and the side structure (118) may be formed integrally and may comprise the same material (e.g., a metallic material such as aluminum).

[0058] According to one embodiment, the front plate (102) may include region(s) that are curved and seamlessly extended toward the rear plate (111) at least a portion of the edge. For example, the front plate (102) (or rear plate (111)) may include only one of the regions that are curved and extended toward the rear plate (111) (or front plate (102)) at one edge of the first surface (110A). According to one embodiment, the front plate (102) or the rear plate (111) may be substantially flat, in which case it may not include the curved and extended region. If the front plate (102) or the rear plate (111) includes the curved and extended region, the thickness of the electronic device (101) in the portion including the curved and extended region may be smaller than the thickness of the other portion.

[0059] According to one embodiment, the electronic device (101) may include at least one of a display (115), an audio module (e.g., a microphone hole (103), an external speaker hole (107), a call receiver hole (114)), a sensor module (e.g., a first sensor module (104), a second sensor module (not shown), a third sensor module (119)), a camera module (e.g., a first camera device (105), a second camera device (112), a flash (113)), a key input device (117), a light-emitting element (106), and a connector hole (e.g., a first connector hole (108), a second connector hole (109)). In one embodiment, the electronic device (101) may omit at least one of the components (e.g., a key input device (117), or a light-emitting element (106)) or additionally include other components.

[0060] The display (115) may output a screen or be visually exposed through a significant portion of, for example, the first surface (110A) (e.g., the front plate (102)). In one embodiment, at least a portion of the display (115) may be visually exposed through the front plate (102) forming the first surface (110A) or through a portion of the side (110C). In one embodiment, the corners of the display (115) may be formed to be generally identical to the adjacent outer shape of the front plate (102). In one embodiment (not shown), to expand the area where the display (115) is visually exposed, the gap between the outer edge of the display (115) and the outer edge of the front plate (102) may be formed to be generally identical.

[0061] According to one embodiment, a recess or opening is formed in a part of the screen display area of ​​the display (115), and the electronic device (101) may include at least one of an audio module (e.g., a call receiver hole (114)), a sensor module (e.g., a first sensor module (104)), a camera module (e.g., a first camera device (105)), and a light-emitting element (106) that are aligned with the recess or the opening. According to one embodiment, at least one of an audio module (e.g., a call receiver hole (114)), a sensor module (e.g., a first sensor module (104)), a camera module (e.g., a first camera device (105)), a fingerprint sensor (not shown), and a light-emitting element (106) may be disposed on the back surface of the screen display area of ​​the display (115). According to one embodiment, the display (115) may be combined with or placed adjacent to a touch detection circuit, a pressure sensor capable of measuring the intensity (pressure) of the touch, and / or a digitizer that detects a magnetic field type stylus pen.

[0062] According to one embodiment, the audio module (103, 107, 114) may include a microphone hole (103) and a speaker hole (e.g., an external speaker hole (107), a call receiver hole (114)). A microphone for acquiring external sound may be placed inside the microphone hole (103), and in one embodiment, a plurality of microphones may be placed to detect the direction of sound. The speaker hole may include an external speaker hole (107) and a call receiver hole (114). In one embodiment, the speaker hole (e.g., an external speaker hole (107), a call receiver hole (114)) and the microphone hole (103) may be implemented as a single hole, or a speaker may be included without a speaker hole (e.g., an external speaker hole (107), a call receiver hole (114)) (e.g., a piezo speaker).

[0063] According to one embodiment, the sensor module may generate an electrical signal or data value corresponding to an internal operating state of the electronic device (101) or an external environmental state. The sensor module may include, for example, a first sensor module (104) (e.g., a proximity sensor) and / or a second sensor module (not shown) (e.g., a fingerprint sensor) disposed on a first surface (110A) of the housing (110), and / or a third sensor module (119) disposed on a second surface (110B) of the housing (110). The second sensor module (not shown) (e.g., a fingerprint sensor) may be disposed on the second surface (110B) or side (110C) as well as on the first surface (110A) (e.g., a display (115)) of the housing (110). The electronic device (101) may further include at least one of, for example, a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer sensor, a grip sensor, a color sensor, an IR (infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illuminance sensor (104).

[0064] According to one embodiment, the camera module may include a first camera device (105) disposed on a first surface (110A) of the electronic device (101), a second camera device (112) disposed on a second surface (110B), and / or a flash (113). The camera devices (e.g., the first camera device (105), the second camera device (112)) may include one or more lenses, an image sensor, and / or an image signal processor. The flash (113) may include, for example, a light-emitting diode or a xenon lamp. In one embodiment, one or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be disposed on one surface of the electronic device (101). In one embodiment, the flash (113) may emit infrared light, and the infrared light emitted by the flash (113) and reflected by the subject may be received through a third sensor module (119). The electronic device (101) or the processor of the electronic device (101) (e.g., the processor (120) of FIG. 1) can detect depth information of the subject based on the time when infrared light is received from the third sensor module (119).

[0065] According to one embodiment, a key input device (117) may be disposed on a side (110C) of the housing (110). In one embodiment, the electronic device (101) may not include some or all of the aforementioned key input devices (117), and the key input devices (117) that are not included may be implemented in other forms, such as soft keys, on the display (115). In one embodiment, the key input device may include a sensor module disposed on a second side (110B) of the housing (110).

[0066] According to one embodiment, the light-emitting element (106) may be disposed, for example, on a first surface (110A) of a housing (110). The light-emitting element (106) may, for example, provide state information of an electronic device (101) in the form of light. In one embodiment, the light-emitting element (106) may, for example, provide a light source that is coupled with the operation of a camera module (e.g., a first camera device (105)). The light-emitting element (106) may include, for example, an LED, an IR LED, and a xenon lamp.

[0067] According to one embodiment, the connector hole (e.g., first connector hole (108), second connector hole (109)) may include a first connector hole (108) capable of receiving a connector (e.g., a USB connector) for transmitting and receiving power and / or data with an external electronic device (e.g., the electronic device (1002) of FIG. 1), and a second connector hole (109) capable of receiving a connector (e.g., an earphone jack) for transmitting and receiving audio signals with an external electronic device.

[0068] FIG. 4 is an exploded perspective view looking toward the front of an electronic device according to one embodiment of the present disclosure.

[0069] FIG. 5 is an exploded perspective view looking toward the rear of an electronic device according to one embodiment of the present disclosure.

[0070] The components of the electronic device (101) of FIGS. 4 and 5 may be partially or entirely identical to the components of the electronic device (101) of FIGS. 1 to 3.

[0071] Referring to FIGS. 4 and 5, an electronic device (101) (e.g., electronic device (101) of FIGS. 1, 2 or 3) may include a housing (210), a first support member (211) (e.g., a bracket), a front plate (220) (e.g., front plate (102) of FIGS. 2), a display (230) (e.g., display (115) of FIGS. 2 and 3), a printed circuit board (or board assembly) (240), a battery (250), a second support member (260) (e.g., a rear case), an antenna, a camera assembly (207), and a rear plate (280) (e.g., rear plate (111) of FIGS. 3).

[0072] According to one embodiment, the electronic device (101) may omit at least one of the components (e.g., a first support member (211), or a second support member (260)) or additionally include other components. At least one of the components of the electronic device (101) may be identical or similar to at least one of the components of the electronic device (101) of FIG. 2 or FIG. 3, and redundant descriptions are omitted below.

[0073] According to one embodiment, the first support member (211) may be disposed inside the electronic device (101) and connected to the housing (210), or may be formed integrally with the housing (210). The first support member (211) may be formed, for example, from a metal material and / or a non-metal (e.g., polymer) material. When formed at least partially from a metal material, a portion of the housing (210) or the first support member (211) may function as an antenna. The first support member (211) may have a display (230) attached to one side and a printed circuit board (240) attached to the other side. The printed circuit board (240) may be equipped with a processor (e.g., processor (120) of FIG. 1), a memory (e.g., memory (130) of FIG. 1), and / or an interface (e.g., interface (177) of FIG. 1). The processor may include, for example, one or more of a central processing unit, an application processor, a graphics processing unit, an image signal processor, a sensor hub processor, or a communication processor.

[0074] According to one embodiment, the first support member (211) and the housing (210) may be combined and referred to as a front case or housing (201). According to one embodiment, the housing (201) may be understood as a structure for generally accommodating, protecting, or housing a printed circuit board (240) or a battery (250). In one embodiment, the housing (201) may be understood to include a structure that a user can visually or tactilely perceive from the exterior of the electronic device (101), such as a housing (210), a front plate (220), and / or a rear plate (280). In one embodiment, the term 'front or rear' of the housing (201) may mean the first surface (110A) of FIG. 2 or the second surface (110B) of FIG. 3. In one embodiment, the first support member (211) is positioned between the front plate (220) (e.g., the first surface (110A) of FIG. 2) and the rear plate (280) (e.g., the second surface (110B) of FIG. 3) and can function as a structure for positioning electrical / electronic components such as a printed circuit board (240) or a camera assembly (207).

[0075] According to one embodiment, the display (230) may include a display panel (231) and a flexible printed circuit board (233) extending from the display panel (231). The flexible printed circuit board (233) may be understood as being electrically connected to the display panel (231), for example, while being positioned at least partially on the rear side of the display panel (231). In one embodiment, reference numeral '231' may be understood as a protective sheet positioned on the rear side of the display panel. For example, unless otherwise distinguished in the following detailed description, the protective sheet may be understood as being part of the display panel (231). In one embodiment, the protective sheet may function as a cushioning structure that absorbs external forces (e.g., a low-density elastomer such as a sponge) or an electromagnetic shielding structure (e.g., a copper sheet (CU sheet)). According to one embodiment, the display (230) may be disposed on the inner surface of the front plate (220) and may output an image through at least a portion of the first surface (110A) of FIG. 2 or the front plate (220) by including a light-emitting layer. As previously mentioned, the display (230) may substantially output an image through the entire surface of the first surface (110A) of FIG. 2 or the front plate (220).

[0076] According to one embodiment, the memory may include, for example, volatile memory or non-volatile memory.

[0077] According to one embodiment, the interface may include, for example, an HDMI (high definition multimedia interface), a USB (universal serial bus) interface, an SD card interface, and / or an audio interface. The interface may, for example, electrically or physically connect the electronic device (101) to an external electronic device and may include a USB connector, an SD card / MMC connector, or an audio connector.

[0078] According to one embodiment, the second support member (260) may include, for example, an upper support member (260a) and a lower support member (260b). In one embodiment, the upper support member (260a) may be positioned to surround the printed circuit board (240) together with a part of the first support member (211). A circuit device (e.g., a processor, a communication module, or a memory) implemented in the form of an integrated circuit chip or various electrical / electronic components may be placed on the printed circuit board (240), and according to an embodiment, the printed circuit board (240) may be provided with an electromagnetic shielding environment from the upper support member (260a). In one embodiment, the lower support member (260b) may be utilized as a structure capable of placing electrical / electronic components such as a speaker module or an interface (e.g., a USB connector, an SD card / MMC connector, or an audio connector). In one embodiment, electrical / electronic components such as a speaker module, an interface (e.g., a USB connector, an SD card / MMC connector, or an audio connector) may be placed on an additional printed circuit board not illustrated. In this case, the lower support member (260b) may be placed to wrap around the additional printed circuit board together with another part of the first support member (211). The speaker module or interface placed on the additional printed circuit board not illustrated or on the lower support member (260b) may be placed corresponding to the audio module (e.g., microphone hole (103)) or speaker hole (e.g., external speaker hole (107), call receiver hole (114))) or connector hole (e.g., first connector hole (108), second connector hole (109)) of FIG. 2.

[0079] According to one embodiment, it may be placed correspondingly in an audio module (170) or a connector hole (108, 109).

[0080] According to one embodiment, the battery (250) is a device for supplying power to at least one component of the electronic device (101) and may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. At least a portion of the battery (250) may be disposed substantially coplanar with, for example, the printed circuit board (240). The battery (250) may be disposed integrally inside the electronic device (101) or may be disposed detachably from the electronic device (101).

[0081] According to one embodiment, the electronic device (101) may further include a separate sub-circuit board (290) spaced apart from the printed circuit board (240) within the first support member (211). The sub-circuit board (290) may be electrically connected to the printed circuit board (240) through a connecting member such as a connecting flexible board or a cable. The sub-circuit board (290) may be electrically connected to electrical components placed in the end region of the electronic device (101), such as a battery (289) or a speaker, a USB connector, an antenna connector and / or a SIM socket, to transmit signals and power.

[0082] Although not illustrated, the antenna may include a conductive pattern implemented on the surface of the second support member (260) through, for example, a laser direct structuring method. In one embodiment, the antenna may include a printed circuit pattern formed on the surface of a thin film, and the antenna in the form of a thin film may be placed between the rear plate (280) and the battery (250). The antenna may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and / or a magnetic secure transmission (MST) antenna. The antenna may, for example, communicate near-field with an external device or wirelessly transmit and receive power required for charging. In one embodiment, other antenna structures may be formed by a part or combination thereof of the housing (210) and / or the first support member (211).

[0083] According to one embodiment, the camera assembly (207) may include at least one camera module. Inside the electronic device (101), the camera assembly (207) may receive at least a portion of light incident through an optical hole or camera window (212, 213, 219). In one embodiment, the camera assembly (207) may be placed on a first support member (211) at a location adjacent to a printed circuit board (240). In one embodiment, the camera module(s) of the camera assembly (207) may be largely aligned with any one of the camera windows (212, 213, 219) and may be wrapped at least partially in a second support member (260) (e.g., an upper support member (260a)).

[0084] FIGS. 6a, 6b, and 6c are drawings illustrating, exemplarily, glass plate and housing structures in electronic devices according to various embodiments.

[0085] All features, components, and / or arrangement relationships between components illustrated in FIGS. 6a, 6b, and 6c may be included, either alone or in combination with, the features, components, and arrangement relationships between components described in other figures of this specification. Likewise, all features, components, and / or arrangement relationships between components described in relation to FIGS. 1 through 5 and FIGS. 7a through 18 may be included, either alone or in combination with, the features, components, and arrangement relationships between components described in FIGS. 6a, 6b, and 6c.

[0086] The structures illustrated in FIGS. 6a, 6b, and 6c are configurations intended to exemplify plates (610, 620, 630) that are applied in various ways depending on the shape and structure of an electronic device (e.g., the electronic device (101) of FIG. 2), and the illustrated shapes do not limit the scope of the rights of the present disclosure.

[0087] Referring to FIGS. 6A, 6B, and 6C, an electronic device according to one embodiment (e.g., electronic device (101) of FIG. 2) may include at least one of a display (230-1, 230-2, 230-3) (e.g., display (230) of FIG. 4), a plate (610, 620, 630) (e.g., front plate (220) of FIG. 4), or a housing (210-1, 210-2, 210-3) (e.g., housing (210) of FIG. 4).

[0088] According to one embodiment, the plate (610, 620, 630) may be placed on the upper side of the display (230-1, 230-2, 230-3). The plate (610, 620, 630) may be placed to protect the display (230-1, 230-2, 230-3) from external impact.

[0089] According to one embodiment, the plate (610, 620, 630) may be supported by a housing (210-1, 210-2, 210-3). The plate (610, 620, 630) may form edge portions (612, 622, 632) of various shapes depending on the combined form or support shape with the housing (210-1, 210-2, 210-3).

[0090] According to one embodiment, the plates (610, 620, 630) may be made of a transparent material. The plates (610, 620, 630) may be referred to as glass plates, front plates, glass substrates, transparent substrates, front covers, or front panels.

[0091] According to one embodiment, the plates (610, 620, 630) may be formed from at least one material among a polymer material such as polycarbonate (PC), polymethyl methacrylate (PMMA), polyimide (PE), polyethylene terephthalate (PET), and polypropylene terephthalate (PPT), or glass. For example, the plates (610, 620, 630) may have a thickness of 2 mm or less, but are not limited thereto.

[0092] A plate (610, 620, 630) according to one embodiment may include a flat portion (611, 621, 631) and an edge portion (612, 622, 632). The edge portion (612, 622, 632) may extend from the flat portion (611, 621, 631). The edge portion (612, 622, 632) may extend from the edge of the flat portion (611, 621, 631). The edge portion (612, 622, 632) may be formed in a portion adjacent to the side of the housing (210-1, 210-2, 210-3). The edge portions (612, 622, 632) may be curved or diagonally shaped to improve the appearance so that they naturally connect to the contact area between the plate (610, 620, 630) and the housing (210-1, 210-2, 210-3).

[0093] According to one embodiment, as illustrated in FIG. 6a, the edge portion (612) may have a curved surface. The edge portion (612) may form a portion of the side of the housing (210-1). The edge portion (612) may be formed to extend from the flat portion (611) to cover a portion of the side of the housing (210-1). The edge portion (612) may be referred to as a curved portion.

[0094] According to one embodiment, as illustrated in FIG. 6b, the edge portion (622) may become thinner as it moves away from the flat portion (621). The corner portion of the edge portion (622) may be cut. The corner portion of the edge portion (622) may have an inclined surface. The edge portion (622) may be extended downwardly inclined from the flat portion (621). The upper inclined surface of the edge portion (622) may be positioned to protrude upward from the housing (210-2).

[0095] According to one embodiment, as illustrated in FIG. 6c, the edge portion (632) may become thinner as it moves away from the flat portion (631). The upper corner portion of the edge portion (632) may be curved. The edge portion (632) may be located on the upper side of the housing (210-3). The curved portion of the edge portion (632) may be positioned to protrude upward from the housing (210-3). The edge portion (632) may be referred to as a curved portion.

[0096] According to one embodiment, a coating layer (e.g., the coating layer (720, 730) of FIG. 7a) may be disposed on one side of the plate (610, 620, 630). The coating layer (720, 730) may be disposed on the front (or outer) side of the plate (610, 620, 630). A detailed description of the coating layer (720, 730) will be provided later in FIG. 7a and FIG. 7b.

[0097] FIGS. 7a and 7b are schematic cross-sectional views illustrating the coating layer structure of an electronic device according to one embodiment.

[0098] FIG. 8 is a graph for explaining the characteristic structure of a coating layer of an electronic device according to one embodiment.

[0099] FIG. 9 is a graph for explaining the shift according to the difference in thickness of the coating layer of an electronic device according to one embodiment.

[0100] All features, components, and / or arrangement relationships between components illustrated in FIGS. 7a, 7b, 8, and 9 may be included, either alone or in combination with, the features, components, and arrangement relationships between components described in other figures of this specification. Likewise, all features, components, and / or arrangement relationships between components described in relation to FIGS. 1 through 6c and FIGS. 10a through 18 may be included, either alone or in combination with, the features, components, and arrangement relationships between components described in FIGS. 7a, 7b, 8, and 9.

[0101] Referring to FIGS. 7a and 7b, an electronic device according to one embodiment (e.g., the electronic device (101) of FIG. 2) may include a plate (710) (e.g., the front plate (220) of FIG. 4) and a coating layer (720, 730).

[0102] According to one embodiment, the plate (710) may include a flat portion (711) and an edge portion (712). The flat portion (711) may correspond to the flat portion (611) of FIG. 6a, the flat portion (621) of FIG. 6b, or the flat portion (631) of FIG. 6c. The edge portion (712) may correspond to the edge portion (612) of FIG. 6a, the edge portion (622) of FIG. 6b, or the edge portion (632) of FIG. 6c.

[0103] According to one embodiment, the coating layer (720, 730) may include a plurality of first coating layers (720) and a plurality of second coating layers (730). The coating layer (720, 730) may be referred to as an optical coating layer. The coating layer (720, 730) may be referred to, for example, as an AR (anti-reflection) coating layer.

[0104] According to one embodiment, the coating layer (720, 730) may include a plurality of first coating layers (720) and a plurality of second coating layers (730).

[0105] According to one embodiment, a plurality of first coating layers (720) may each have a first refractive index. Each first coating layer (720) may have substantially the same refractive index, but is not limited thereto. For example, the first refractive index may be 1.3 to 1.7. For example, the first coating layer (720) may include SiO2, but is not limited thereto. The first coating layer (720) may be referred to as a low refractive index coating layer.

[0106] According to one embodiment, a plurality of second coating layers (730) may each have a second refractive index. Each second coating layer (730) may have substantially the same refractive index, but is not limited thereto. The second refractive index may be greater than the first refractive index. For example, the second refractive index may be 1.8 to 2.4. For example, the second coating layer (730) is SiN x It may include, but is not limited to. The second coating layer (730) may be referred to as a high-refractive index coating layer.

[0107] According to one embodiment, a plurality of first coating layers (720) and a plurality of second coating layers (730) may be arranged alternately. One surface of the first coating layer (720) may be in contact with one surface of the second coating layer (730). For example, the plurality of first coating layers (720) may include four first coating layers (720a, 720b, 720c, 720d) as illustrated. The lowest first coating layer (720a) may be deposited to be in contact with the surface of the plate (710). For example, the plurality of second coating layers (730) may include three second coating layers (730a, 730b, 730c) as illustrated.

[0108] According to one embodiment, the coating layer (720, 730) may have a difference of 2% or less between the maximum reflectance and the minimum reflectance in the visible light region (e.g., 400 nm to 700 nm) at an incident angle greater than 0 degrees and less than or equal to 70 degrees. If the coating layer (720, 730) is designed so that the difference between the maximum reflectance and the minimum reflectance is 2% or less, it may be difficult for the user to detect a change in the color of the light emitted from the display side. By designing the difference between the maximum reflectance and the minimum reflectance to be within 2%, consistent color reproduction can be provided to the user.

[0109] A coating layer (720, 730) according to one embodiment can be designed so that the difference between the maximum reflectance and the minimum reflectance in the visible region is 2% or less, not only at an angle of incidence of 0 degrees but also up to an angle of incidence of 70 degrees. Since it is common for a user to view the display at an angle of incidence of 40 degrees or more rather than 0 degrees when using the electronic device (101), it is necessary to set the difference between the maximum reflectance and the minimum reflectance to be within 2% even at various angles of incidence.

[0110] According to one embodiment, the thickness of a plurality of second coating layers (730) may be 50% to 90% of the total thickness of the coating layers (720, 730). In order to have the reflectivity performance of the aforementioned coating layers (720, 730), the total thickness of a plurality of second coating layers (730) may be 50% to 90% of the total thickness of the coating layers (720, 730).

[0111] According to one embodiment, one of the plurality of first coating layers (720) may form the layer furthest from the plate (710). For example, the coating layer furthest from the plate (710) may be the first coating layer (720) with a relatively low refractive index. The first coating layer (720) may be disposed on the uppermost layer of the coating layers (720, 730).

[0112] According to one embodiment, the thickness (D3) of the first coating layer (720) furthest from the plate (710) may be 90 nm or more. Here, the thickness (D3) may be the thickness measured relative to the top layer of the first coating layer (720) located on the flat portion (711) of the plate (710).

[0113] According to one embodiment, the coating layer (720, 730) may have a multilayer structure of 7 or more layers.

[0114] The coating layer (720, 730) can be formed with embodiments such as those shown in Table 1 below. A coating layer (e.g., 720d) may be referred to as the top layer in the layer.

[0115] Layer Example 1 Example 2 Example 3 Layer Composition Refractive Index Thickness (nm) Refractive Index Thickness (nm) Refractive Index Thickness (nm) 1SiO2 1.4675 111 2.9 1.4671 110 3.01 458889 7.92SiN x 2.0303344.62.028543.62.2324333.73SiO21.4675111.21.4671111.81.4588811.74SiN x 2.0303396.82.028579.82.2324377.55SiO21.4675135.01.4671126.91.4588820.26SiN x 2.0303329.12.028532.12.2324330.07SiO21.4675190.21.4671151.71.4588849.78SiN x 2.0303317.52.028512.52.232439.89SiO21.4675166.71.4671120.01.4588820.010SiN x 2.0303333.111SiO21.4675123.512SiN x 1.9589420.013SiO21.4675111.414SiN x 1.9653747.115SiO21.4675132.616SiN x 1.9653729.017SiO21.4675150.718SiN x 1.9653711.819SiO21.4675110.7

[0116] According to one embodiment, the coating layer (720, 730) may have a difference of 2% or less between the maximum reflectance and the minimum reflectance for light having a wavelength of 800 nm to 1200 nm at an incident angle of 0 to 70 degrees.

[0117] As illustrated in FIG. 8, the second section (820) in the coating layer (720, 730) according to one embodiment, in which the difference between the maximum reflectance and the minimum reflectance is within 2%, may be wider than the first section (810) in the conventional AR coating layer, in which the difference between the maximum reflectance and the minimum reflectance is within 2%. The coating layer (720, 730) according to one embodiment may be designed so that the difference between the maximum reflectance and the minimum reflectance is within 2% not only in the visible region but also in a region of 800 nm or more. The reason for designing the difference between the maximum reflectance and the minimum reflectance to be within 2% in a region of 800 nm or more will be explained below.

[0118] According to one embodiment, the first thickness (D1), which is the thickness of the coating layer (720, 730) located on the flat portion (711) of the plate (710), may be thicker than the second thickness (D2), which is the thickness of the coating layer (720, 730) located on the edge portion (712) of the plate (710). The coating layer (720, 730) may be deposited on the surface of the plate (710) through a deposition process. The coating layer (720, 730) may be coated, for example, by a PVD (Physical Vapor Deposition) or CVD (Chemical Vapor Deposition) method, but is not limited thereto. When the coating layer (720, 730) is deposited on the surface of the plate (710), the thickness of the deposited coating layer may become thinner as the distance from the point emitting the deposition material increases. The edge portion (712) is farther from the point of discharge of the deposition material compared to the flat portion (711), so the second thickness (D2), which is the thickness of the coating layer (720, 730) deposited on the surface of the edge portion (712), may be thinner than the first thickness (D1) of the coating layer (720, 730) deposited on the surface of the flat portion (711).

[0119] As shown in FIG. 9, it can be observed that as the thickness of the coating layer (720, 730) decreases, the reflectance graph according to wavelength shifts to the left. In the case of the planar portion (711), a coating layer (720, 730) of sufficient thickness is formed so that it can have a generally uniform reflectance in the visible region (910) (e.g., 400 nm to 700 nm). However, in the case of the edge portion (712), the coating layer (720, 730) becomes thinner, and as a result, the characteristic of the existing coating layer, which increased reflectance in the region of 700 nm or more, is applied to the long wavelength region of the visible region, thereby generating relatively more light in the red region. For example, the 810 section of FIG. 8 shifts in the negative direction of the horizontal axis, and as a result, the difference in reflectance increases in the long wavelength near 700 nm, allowing the user to detect a change in color. Reflection of wavelengths in the red region can cause the user to feel a sense of color incongruity, thereby lowering the user satisfaction of the electronic device. In the present disclosure, this problem can be solved by designing to have a uniform reflectance not only in the visible region but also in a region beyond that which humans cannot visually confirm, specifically from 800 nm to 1200 nm.

[0120] Referring to FIG. 9, the wavelength-dependent reflectance of the coating layer (720, 730) located on the planar portion (711) may have a pattern of the first line (911) in the graph. As the thickness of the coating layer (720, 730) decreases, the wavelength-dependent reflectance may sequentially shift along the horizontal axis to the second line (912) and the third line (913). In one embodiment, the coating layer (720, 730) is designed so that the difference between the maximum reflectance and the minimum reflectance is within 2% even in the 800 nm to 1200 nm region, thereby enabling improved color reproduction despite changes in the thickness of the coating layer (720, 730).

[0121] According to one embodiment, the electronic device (101) may further include a contamination prevention layer. The contamination prevention layer may be disposed on the upper side of the coating layer (720, 730). The contamination prevention layer may be disposed to protect the coating layer (720, 730) from external contamination.

[0122] According to one embodiment, the anti-fouling layer may comprise one of a silicone-based coating layer, a fluorine-based coating layer, and a ceramic and nano-coating layer. For example, the silicone-based coating layer may comprise polydimethylsiloxane (PDMS) or silicone resin, but is not limited thereto. For example, the fluorine-based coating layer may comprise polytetrafluoroethylene (PTFE) or fluorine resin, but is not limited thereto. For example, the ceramic and nano-coating layer may comprise silica nanoparticles, but is not limited thereto.

[0123] According to one embodiment, the thickness of the anti-contamination layer may be thinner than the thickness of the first coating layer (720) (e.g., 720d) furthest from the plate (710). For example, the thickness of the anti-contamination layer may be 90 nm or less.

[0124] According to one embodiment, the refractive index of the anti-contamination layer may be less than or equal to the refractive index of the first coating layer (720) (e.g., 720d) furthest from the plate (710).

[0125] FIGS. 10a, FIGS. 10b, FIGS. 10c, and FIGS. 10d are graphs illustrating the change in reflectance according to the angle of incidence for a general coating layer and a coating layer of an electronic device according to one embodiment.

[0126] All features, components, and / or arrangement relationships between components illustrated in FIGS. 10a, 10b, 10c, and 10d may be included, either alone or in combination with, the features, components, and arrangement relationships between components described in other figures of this specification. Likewise, all features, components, and / or arrangement relationships between components described in relation to FIGS. 1 through 9 and FIGS. 11 through 18 may be included, either alone or in combination with, the features, components, and arrangement relationships between components described in FIGS. 10a, 10b, 10c, and 10d.

[0127] FIGS. 10a, FIGS. 10b, FIGS. 10c and FIGS. 10d may be experimental examples for comparing the reflectance of wavelength according to the angle of incidence in a coating layer (e.g., the coating layer (720, 730) of FIG. 7a) with that of a conventional AR coating layer.

[0128] FIG. 10a is a graph showing reflectance as a function of wavelength at an angle of incidence of 0 degrees, FIG. 10b is a graph showing reflectance as a function of wavelength at an angle of incidence of 50 degrees, FIG. 10c is a graph showing reflectance as a function of wavelength at an angle of incidence of 60 degrees, and FIG. 10d is a graph showing reflectance as a function of wavelength at an angle of incidence of 70 degrees.

[0129] FIG. 10a (a), FIG. 10b (a), FIG. 10c (a), and FIG. 10d (a) are graphs showing the reflectance characteristics of a typical AR coating layer according to wavelength. FIG. 10a (b), FIG. 10b (b), FIG. 10c (b), and FIG. 10d (b) are graphs showing the reflectance characteristics of a coating layer according to one embodiment (e.g., the coating layer (720, 730) of FIG. 7a) according to wavelength. For each graph, the overall technical characteristics in the visible region are shown as dashed lines.

[0130] Referring to FIGS. 10a, 10b, 10c, and 10d, it can be seen that for a typical AR coating layer, the reflectance in the visible region increases with increasing wavelength as the angle of incidence increases. For a typical AR coating layer, as the angle of incidence increases, the reflectance in the long-wavelength region of the visible region (e.g., red region) may increase. Since the reflectance of a typical AR coating layer in the visible region exhibits an upward-sloping pattern as the angle of incidence increases, it may reflect red light depending on the angle of observation, thereby degrading color reproduction.

[0131] In the case of the coating layer (720, 730) according to one embodiment, the difference between the maximum reflectance and the minimum reflectance within the visible region can be maintained within 2% even if the angle of incidence increases. Accordingly, a uniform color tone can be provided regardless of the angle of incidence at which the user observes the display.

[0132] Table 2 below illustrates the comparison of the characteristics of the comparative example (general AR coating layer) and the example.

[0133] Angle of Incident 0° 50° 60° 70° Comparison Example Minimum Reflectance 4.0 9 6.5 4 10.9 3 2 2.20 Maximum Reflectance 5.1 5 7.7 1 3.2 1 2 6.31 Maximum Reflectance - Minimum Reflectance 1.0 6 1.1 6 2.2 8 4.11 Example Minimum Reflectance 4.8 0 7.3 4 12.2 2 4.61 Maximum Reflectance 5.8 3 8.2 7 13.3 2 5.85 Maximum Reflectance - Minimum Reflectance 1.0 2 0.9 2 1.1 5 1.25

[0134] As shown in Table 2, in the case of the comparative example, the difference between the maximum and minimum reflectance was 1.06% when the angle of incidence was 0 degrees, 1.16% when the angle of incidence was 50 degrees, 2.28% when the angle of incidence was 60 degrees, and 4.11% when the angle of incidence was 70 degrees, confirming that as the angle of incidence increases, the difference between the maximum and minimum reflectance increases, thereby degrading color reproducibility. In addition, in the case of the example, the difference between the maximum and minimum reflectance was 1.02% when the angle of incidence was 0 degrees, 0.92% when the angle of incidence was 50 degrees, 1.15% when the angle of incidence was 60 degrees, and 1.25% when the angle of incidence was 70 degrees, confirming that the difference between the maximum and minimum reflectance in the visible region remains 2% or less regardless of the angle of incidence.

[0135] FIG. 11 is a graph illustrating a structure that reduces reflectance as the wavelength increases from a 0-degree incident angle of a coating layer of an electronic device according to one embodiment.

[0136] FIGS. 12a, FIGS. 12b, FIGS. 12c and FIGS. 12d are graphs illustrating the improved reflectance when the coating layer of an electronic device according to one embodiment is designed as shown in FIG. 11 at an incident angle of 0 degrees.

[0137] All features, components, and / or arrangement relationships between components illustrated in FIGS. 11, 12a, 12b, 12c, and 12d may be included, either alone or in combination with, the features, components, and arrangement relationships between components described in other figures of this specification. Likewise, all features, components, and / or arrangement relationships between components described in relation to FIGS. 1 through 10d and FIGS. 13 through 18 may be included, either alone or in combination with, the features, components, and arrangement relationships between components described in FIGS. 11, 12a, 12b, 12c, and 12d.

[0138] Referring to FIG. 11, a coating layer according to one embodiment (e.g., the coating layer (720, 730) of FIG. 7a) may have a reflectance that generally decreases as the wavelength increases for light having a wavelength of 400 nm to 700 nm at an incident angle of 0 degrees. Here, a general decrease in reflectance may refer to a trend of change in reflectance that slopes downward to the right as the wavelength increases from the visible region to the long wavelength. For example, the reflectance in the visible region slopes downward to the right while forming irregular waves at an incident angle of 0 degrees, and the general decrease in reflectance can be confirmed based on the slope when the trend is flattened after filtering (or averaging) the low-frequency components from the graph.

[0139] According to one embodiment, the first reflectance, which is the reflectance of light having a wavelength of 400 nm at an incident angle of 0 degrees of the coating layer (720, 730), may be greater than the second reflectance, which is the reflectance of light having a wavelength of 700 nm. For example, the difference between the first reflectance and the second reflectance may be 2% or less.

[0140] According to one embodiment, the coating layer (720, 730) may have an average reflectance for wavelengths of 400 nm to 700 nm for an incident angle of 0 degrees that is 0.5% greater than the average reflectance for wavelengths of 500 nm to 700 nm.

[0141] FIGS. 12a, 12b, 12c and FIG. 12d are experimental examples showing the characteristics of a coating layer (720, 730) designed to have a negative slope in the visible region for an incident angle of 0 degrees.

[0142] FIG. 12a is a graph showing reflectance as a function of wavelength at an angle of incidence of 0 degrees, FIG. 12b is a graph showing reflectance as a function of wavelength at an angle of incidence of 50 degrees, FIG. 12c is a graph showing reflectance as a function of wavelength at an angle of incidence of 60 degrees, and FIG. 12d is a graph showing reflectance as a function of wavelength at an angle of incidence of 70 degrees.

[0143] Table 3 below shows the difference between the maximum and minimum reflectances in Figs. 12a, 12b, 12c, and 12d.

[0144] Visible Range Angle of Incident 0° 50° 60° 70° Example Minimum Reflectance 4.8 17.6 11 2.3 12 4.86 Maximum Reflectance 6.7 28.5 31 3.2 6 25.69 Maximum Reflectance - Minimum Reflectance 1.9 10.9 20.9 50.83

[0145] As shown in Table 3, in the case of the example, the difference between the maximum and minimum reflectances is 1.91% when the angle of incidence is 0 degrees, 0.92% when the angle of incidence is 50 degrees, 0.95% when the angle of incidence is 60 degrees, and 0.83% when the angle of incidence is 70 degrees, confirming that the difference between the maximum and minimum reflectances in the visible region is maintained at 2% or less regardless of the angle of incidence. In addition, it can be confirmed that the difference between the maximum and minimum reflectances is within 1% in the angle of incidence range of 50 to 70 degrees, which is the range most frequently used by users.

[0146] Figure 13 is a diagram illustrating that the angle of incidence changes at each position of the display depending on the user's line of sight.

[0147] FIG. 14 is a diagram illustrating the shift in a*b* color coordinates according to the difference in incident angle between a general coating layer and a coating layer according to one embodiment.

[0148] All features, components, and / or arrangement relationships between components illustrated in FIGS. 13 and 14 may be included, either alone or in combination with, the features, components, and arrangement relationships between components described in other figures of this specification. Likewise, all features, components, and / or arrangement relationships between components described in relation to FIGS. 1 through 12d and FIGS. 15a through 18 may be included, either alone or in combination with, the features, components, and arrangement relationships between components described in FIGS. 13 and 14.

[0149] As schematically illustrated in FIG. 13, it is common for a user to view the display screen of an electronic device (101) at an oblique angle. Even when viewed at an oblique angle, as illustrated in FIG. 13, the angle of incidence may differ depending on the position of the display and the distance between the user's eyes and the display. For example, while the user is viewing the display, for any two different points, the first point may form a first angle of incidence (1310), and the second point may form a second angle of incidence (1320). Since the angle of incidence differs even on a single display, the user may perceive an uneven color tone due to the increase in reflectivity caused by the change in the angle of incidence. For example, as illustrated in FIG. 14 (a), if a standard AR coating layer is used, the first color tone (1410) may be present at a 0-degree angle of incidence, but as the angle of incidence increases, it can be observed that the image deviates from the target dotted line box.

[0150] In one embodiment, when a coating layer (e.g., the coating layer (720, 730) of FIG. 7a) has a first color tone (1420) at an angle of incidence of 0 degrees, it can be confirmed that the color tone remains within the target dotted box even as the angle of incidence increases. Therefore, the user can experience a uniform color tone overall.

[0151] FIG. 15a is a front perspective view of an electronic device in a first state according to one embodiment.

[0152] FIG. 15b is a rear perspective view of an electronic device according to one embodiment.

[0153] FIG. 16 is a perspective view of an electronic device in a second state according to one embodiment.

[0154] FIG. 17 is an exploded view of a part of an electronic device according to one embodiment.

[0155] Referring to FIGS. 15a, 15b, 16 and 17, an electronic device (1500) (or foldable electronic device) according to one embodiment may include all or part of a foldable housing (1510, 1520), a display (1560) (e.g., a flexible display), a hinge structure (1600) (or a hinge structure), or a hinge housing (1530). The foldable housing (1510, 1520) may include a first housing (1510) and a second housing (1520). FIG. 15a shows a perspective view of the electronic device (1500) in a first state (e.g., a flat state, an unfolded state, or an unfolded state). FIG. 16 is a perspective view of the electronic device (1500) in a second state (e.g., a folded state, or a folded state).

[0156] Here, the first state may refer to a state in which the first housing (1510) and the second housing (1520) are located on the same plane. In the first state, the angle formed by the first housing (1510) and the second housing (1520) may be 180 degrees.

[0157] Here, the second state may refer to a state in which one side of the first housing (1510) and one side of the second housing (1520) face each other. The second state may refer to a state in which the first housing (1510) and the second housing (1520) are superimposed by a hinge structure (1600).

[0158] According to one embodiment, the electronic device (1500) may be folded in at least one of an in-folding method, an out-folding method, and an in / out-folding method. The in-folding method is a method of folding the display (1560) inward so that the displays (1560) face each other, the out-folding method is a method of folding the display (1560) outward so that the first housing (1510) and the second housing (1520) face each other, and the in / out-folding method may be a method of folding a part of the display (1560) inward and folding the remainder of the display (1560) outward. Hereinafter, an electronic device of the in-folding method, in which the display (1560) is folded inward, will be described as an example.

[0159] According to one embodiment, the electronic device (1500) may include a first cover (1519) covering the rear portion of a first housing (1510) and a second cover (1529) covering the rear portion of a second housing (1520). In a second state, the first cover (1519) and the second cover (1529) may be arranged to face in opposite directions.

[0160] According to one embodiment, the display (1560) may include a first area (1561), a second area (1562), and an intermediate area (1563). The first area (1561) may be an area located on the front surface of the first housing (1510). The second area (1562) may be an area located on the front surface of the second housing (1520). The intermediate area (1563) may be an area located between the first area (1561) and the second area (1562). The first area (1561) and the second area (1562) may be spaced apart with the intermediate area (1563) in between. When the electronic device (1500) is in a second state, the first region (1561) of the display (1560) located on the front of the first housing (1510) can be folded to face the second region (1562) of the display (1560) located on the second housing (1520). When the electronic device (1500) is in a second state, the intermediate region (1563) can be bent.

[0161] According to one embodiment, the first housing (1510) may be formed with at least a portion of a metal material or at least a portion of a non-metal material. The first housing (1510) may be formed of a material having a certain rigidity to support at least a portion of the display (1560). A portion of the first region (1561) and the intermediate region (1563) of the display (1560) may be disposed on the front of the first housing (1510). At least a portion of the front edge of the first housing (1510) may be bonded to the edge of the first region (1561) of the display (1560). Alternatively, a portion of the front of the first housing (1510) may be bonded to the first region (1561) of the display (1560).

[0162] According to one embodiment, the second housing (1520) may be formed with at least a portion of a metal material or at least a portion of a non-metal material. The second housing (1520) may be formed of a material having a certain rigidity to support at least a portion of the display (1560). A portion of the second region (1562) and the intermediate region (1563) of the display (1560) may be disposed on the front of the second housing (1520). At least a portion of the front edge of the first housing (1510) may be bonded to the edge of the second region (1562) of the display (1560). Alternatively, a portion of the front of the second housing (1520) may be bonded to the second region (1562) of the display (1560).

[0163] A space for accommodating electronic components may be formed inside the first housing (1510) and / or the second housing (1520). Electronic elements required for driving the display (1560), such as a printed circuit board, a processor (e.g., the processor (120) of FIG. 1), a memory (e.g., the memory (130) of FIG. 1), and a battery (e.g., the battery (189) of FIG. 1), may be placed within the first housing (1510) and / or the second housing (1520).

[0164] According to one embodiment, a hinge structure (1600) may be arranged to be connected to a first housing (1510) and a second housing (1520). The hinge structure (1600) may be arranged to rotate the first housing (1510) and / or the second housing (1520) when the electronic device (1500) operates between a first state and a second state. One side of the hinge structure (1600) may be coupled to the first housing (1510). The other side of the hinge structure (1600) may be coupled to the second housing (1520). The foldable housings (1510, 1520) may be rotated around the hinge structure (1600).

[0165] According to one embodiment, the hinge structure (1600) may include at least one hinge module (310). The hinge structure (1600) may include a first hinge module (1610) and a second hinge module (1620). The first hinge module (1610) and the second hinge module (1620) may be spaced apart from each other within the hinge housing (1530). The number of hinge modules included in the hinge structure (1600) is not limited thereto, and the hinge structure (1600) may include three or more hinge modules.

[0166] According to one embodiment, the hinge housing (1530) may be positioned to accommodate the hinge structure (1600). The hinge housing (1530) may be positioned between the first housing (1510) and the second housing (1520). The edge portion of the first housing (1510) facing the second housing (1520) may include a recessed portion having at least a certain curvature so that at least a portion of the hinge housing (1530) can be positioned therein. The edge portion of the second housing (1520) facing the first housing (1510) may include a recessed portion having at least a certain curvature so that at least a portion of the hinge housing (1530) can be positioned therein.

[0167] According to one embodiment, the electronic device (1500) may include a plate (e.g., the plate (610, 620, 630) of FIG. 6a, FIG. 6b, and FIG. 6c). The plate (610, 620, 630) may be positioned above the display (1560). The plate (610, 620, 630) may be positioned to protect the display from external impact. The plate (610, 620, 630) may be formed to be bendable together with the display (1560).

[0168] According to one embodiment, the electronic device (1500) may include a coating layer (e.g., the coating layer (720, 730) of FIG. 7a). The coating layer (720, 730) may be disposed on or deposited on one surface of a plate (e.g., the plate (710) of FIG. 7a).

[0169] FIG. 18 is a diagram illustrating that the angle of incidence at each position of the display varies depending on the user's line of sight in a foldable electronic device according to one embodiment.

[0170] As schematically illustrated in FIG. 18, in the case of a foldable electronic device (1500), a user can view a display with the housing of the foldable electronic device (1500) partially folded. As illustrated in FIG. 18, when viewing a display with the foldable electronic device (1500) in an intermediate state, a difference in the angle of incidence between the first area (1561) and the second area (1562) of the display (1560) may occur. For example, when a user views the display, a third angle of incidence (1810) may be present at a point in the first area (1561), and a fourth angle of incidence (1820) may be present at a point in the second area (1562). Although differences in the angle of incidence may cause differences in the reflectance of the coating layer and reduce color reproduction, the coating layer (720, 730) according to one embodiment maintains color within the target box despite changes in the angle of incidence as described in FIG. 14, thereby providing the user with overall uniform color reproduction.

[0171] An electronic device according to one embodiment may include a housing (210), a display (230) disposed on the housing (210), a plate (710) disposed on the display (230) and comprising a flat portion (711) and an edge portion (712) extending from the flat portion (711), and a coating layer (720, 730) formed on one surface of the plate (710). The coating layer (720, 730) may include a plurality of first coating layers (720) having a first refractive index and a plurality of second coating layers (730) having a second refractive index higher than the first refractive index. The plurality of first coating layers (720) and the plurality of second coating layers (730) may be arranged alternately. One of the plurality of first coating layers (720) forms the layer furthest from the plate (710), and for light having a wavelength of 800 nm to 1200 nm at an incident angle of 0 to 70 degrees, the difference between the maximum reflectance and the minimum reflectance may be 2% or less.

[0172] According to one embodiment, the thickness of the plurality of second coating layers (730) may be 50% to 90% of the total thickness of the coating layers (720, 730).

[0173] According to one embodiment, the thickness of one first coating layer (720) forming the layer furthest from the plate (710) among the plurality of first coating layers (720) may be 90 nm or more.

[0174] According to one embodiment, the coating layer (720, 730) may have a multilayer structure of 7 or more layers.

[0175] According to one embodiment, the coating layer (720, 730) may be configured such that, for light having a wavelength of 400 nm to 700 nm at an incident angle of 0 degrees, the reflectance generally decreases as the wavelength increases.

[0176] According to one embodiment, the coating layer (720, 730) may have a first reflectance, which is the reflectance of light having a wavelength of 400 nm at an incident angle of 0 degrees, which is greater than a second reflectance, which is the reflectance of light having a wavelength of 700 nm at an incident angle of 0 degrees.

[0177] According to one embodiment, the difference between the first reflectance and the second reflectance may be 2% or less.

[0178] According to one embodiment, the first thickness (D1), which is the thickness of the coating layer (720, 730) located on the flat portion (711) of the plate (710), may be thicker than the second thickness (D2), which is the thickness of the coating layer (720, 730) located on the edge portion (712) of the plate (710).

[0179] According to one embodiment, the plate (710) may be a glass substrate.

[0180] According to one embodiment, the coating layer (720, 730) may be an AR (anti-reflection) coating layer.

[0181] According to one embodiment, the coating layer (720, 730) may be coated on the surface of the plate (710) by a PVD or CVD method.

[0182] According to one embodiment, the first refractive index may be 1.3 to 1.7.

[0183] According to one embodiment, the second refractive index may be 1.8 to 2.4.

[0184] According to one embodiment, the first coating layer (720) may include SiO2.

[0185] According to one embodiment, the second coating layer (730) is SiN x It may include.

[0186] According to one embodiment, the coating layer (720, 730) may have a difference of 2% or less between the maximum reflectance and the minimum reflectance for light having a wavelength of 400 nm to 700 nm at an incident angle of 0 to 70 degrees.

[0187] According to one embodiment, for an incident angle of 0 degrees, the coating layer (720, 730) may have an average reflectance for wavelengths of 400 nm to 700 nm that is 0.5% greater than the average reflectance for wavelengths of 500 nm to 700 nm.

[0188] According to one embodiment, the electronic device may further include a contamination-preventing layer disposed on the coating layer (720, 730).

[0189] According to one embodiment, the housing may include a first housing and a second housing. The display may be disposed on the first housing and the second housing and formed to be bendable.

[0190] According to one embodiment, the plate may be formed to be bendable together with the display.

[0191] The embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said 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 said items unless the relevant context clearly indicates 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" may 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 said components from other said components and do not limit said components in any other aspect (e.g., importance or order). Where any (e.g., 1st) component is referred to as “coupled” or “connected” to another (e.g., 2nd) component, with or without the terms “functionally” or “communicationly,” it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0192] The term “module” as used in the embodiments of this document 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, for example. A module may be a component formed integrally, or a minimum unit of said component or a part thereof 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).

[0193] One embodiment of the present document may be implemented as software (e.g., program (140)) comprising one or more instructions stored in a storage medium (e.g., internal memory (136) or external memory (138)) readable by a machine (e.g., electronic device (101)). For example, a processor (e.g., processor (120)) of the machine (e.g., electronic device (101)) may call at least one of the one or more instructions stored in the storage medium and execute it. This enables the machine to be operated to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily.

[0194] According to one embodiment, the method according to the embodiments disclosed herein may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer 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 distributed online (e.g., download or upload) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0195] According to one embodiment, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to one embodiment, one or more of the components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the corresponding component among the multiple components prior to integration. According to one embodiment, operations performed by the module, program, or other components 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.

Claims

1. In an electronic device, Housing (210); A display (230) placed on the above housing (210); A plate (710) disposed on the display (230) and comprising a flat portion (711) and an edge portion (712) extending from the flat portion (711); and It includes a coating layer (720, 730) formed on one surface of the above plate (710), and The above coating layer (720, 730) is, A plurality of first coating layers (720) having a first refractive index; and It includes a plurality of second coating layers (730) having a second refractive index higher than the first refractive index, and The plurality of first coating layers (720) and the plurality of second coating layers (730) are arranged alternately, One of the plurality of first coating layers (720) forms the layer furthest from the plate (710), and For light having a wavelength of 800 nm to 1200 nm at an angle of incidence of 0 to 70 degrees, the difference between the maximum reflectance and the minimum reflectance is 2% or less, Electronic device.

2. In Paragraph 1, The thickness of the plurality of second coating layers (730) is 50% to 90% of the total thickness of the coating layers (720, 730). Electronic device.

3. In Paragraph 1 or 2, The thickness of one first coating layer (720) forming the layer furthest from the plate (710) among the plurality of first coating layers (720) is 90 nm or more, Electronic device.

4. In any one of paragraphs 1 through 3, The above coating layer (720, 730) is a multilayer structure of 7 layers or more, Electronic device.

5. In any one of paragraphs 1 through 4, The above coating layer (720, 730) is, For light having a wavelength of 400 nm to 700 nm at an angle of incidence of 0 degrees, configured such that the reflectance generally decreases as the wavelength increases, Electronic device.

6. In any one of paragraphs 1 through 5, The above coating layer (720, 730) is, The first reflectance, which is the reflectance of light with a wavelength of 400 nm at an angle of incidence of 0 degrees, Greater than the second reflectance, which is the reflectance of light with a wavelength of 700 nm at an angle of incidence of 0 degrees, Electronic device.

7. In Paragraph 6, The difference between the first reflectance and the second reflectance is 2% or less, Electronic device.

8. In any one of paragraphs 1 through 7, The first thickness (D1), which is the thickness of the coating layer (720, 730) located on the flat portion (711) of the plate (710), is, Thicker than the second thickness (D2), which is the thickness of the coating layer (720, 730) located on the edge portion (712) of the plate (710). Electronic device.

9. In any one of paragraphs 1 through 8, The above coating layer (720, 730) is coated on the surface of the plate (710) by a PVD or CVD method, Electronic device.

10. In any one of paragraphs 1 through 9, The first refractive index is 1.3 to 1.7, Electronic device.

11. In any one of paragraphs 1 through 10, The second refractive index is 1.8 to 2.4, Electronic device.

12. In any one of paragraphs 1 through 11, The first coating layer (720) comprises SiO2, Electronic device.

13. In any one of paragraphs 1 through 12, The second coating layer (730) above is SiN x including, Electronic device.

14. In any one of paragraphs 1 through 13, The above coating layer (720, 730) is, For light having a wavelength of 400 nm to 700 nm at an angle of incidence of 0 to 70 degrees, the difference between the maximum reflectance and the minimum reflectance is 2% or less, Electronic device.

15. In any one of paragraphs 1 through 14, The above coating layer (720, 730) is, For an angle of incidence of 0 degrees, the average reflectance for wavelengths from 400 nm to 700 nm is 0.5% greater than the average reflectance for wavelengths from 500 nm to 700 nm, Electronic device.

Images