Protective film and intelligent terminal

Abstract

The utility model provides a protective film and an intelligent terminal, the protective film comprises a protective layer, a polymer layer, a refraction group layer and an adhesive layer, the polymer layer comprises a first surface and a second surface which are opposite, the protective layer is arranged on the first surface, the refraction group layer is arranged on the second surface, and the adhesive layer covers the refraction group layer. The refraction group layer comprises at least one refraction material layer which is arranged in a stacked mode. The protective film can prevent the refraction group layer from being scratched, and is high in transmittance and clear in imaging.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a protective film and a smart terminal. Background Art

[0002] In order to reduce the reflectivity of the screen and improve the anti-fingerprint and anti-fouling properties of the screen surface, it is often necessary to stick a layer of protective film on the PET film of the screen. The protective film includes a PET film layer, an adhesive layer arranged on the lower surface of the PET film layer, and a hardening layer, a high refractive layer, a low refractive layer and an auxiliary agent layer arranged on the upper surface of the PET film layer.

[0003] In the process of conceiving and implementing the present application, the inventors found that there are at least the following problems: since the high-refractive layer and the low-refractive layer are arranged below the auxiliary agent layer; when the user touches the screen with his fingers or puts the screen in his pocket, multiple scratches and frictions cause the high-refractive layer and the low-refractive layer to be damaged.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] The purpose of the present application is to provide a protective film that can prevent the refractive layer from being scratched, has high transmittance, and provides clear imaging.

[0006] In order to solve the above technical problems, the present application provides a protective film, including a protective layer, a polymer layer, a refractive group layer and an adhesive layer, the polymer layer includes a first surface and a second surface relative to each other, the protective layer is arranged on the first surface, the refractive group layer is arranged on the second surface, the adhesive layer covers the refractive group layer, and the refractive group layer includes at least one refractive material layer stacked.

[0007] Optionally, the refraction group layer includes a first refraction portion and a second refraction portion, the first refraction portion and the second refraction portion are both arranged on the second surface, and a distance between the first refraction portion and the second refraction portion is greater than a first threshold.

[0008] Optionally, the stacking structures of the first refractive portion and the second refractive portion are the same or different.

[0009] Optionally, the first refractive portion and the second refractive portion have the same or different sizes.

[0010] Optionally, a gap between the first refractive portion and the second refractive portion is located at the center of the polymer layer.

[0011] Optionally, the refractive group layer completely covers the second surface.

[0012] Optionally, the area of ​​the refractive group layer is smaller than the area of ​​the second surface, and the area of ​​the refractive group layer is greater than a second threshold.

[0013] Optionally, the adhesive layer completely covers the refractive group layer.

[0014] Optionally, the adhesive layer covers the refractive group layer and the polymer layer, and the adhesive layer surrounds the refractive group layer.

[0015] Optionally, the first refractive material layer has a refractive index lower than a first threshold.

[0016] Optionally, the second refractive material layer has a refractive index higher than a second threshold.

[0017] Optionally, the number of the second refractive material layers is less than the number of the second refractive material layers.

[0018] Optionally, the first refractive material layers and the second refractive material layers are alternately stacked.

[0019] Optionally, the first refractive material layer is disposed on the second surface.

[0020] Optionally, the protective film further comprises a peelable base film, the polymer layer, the protective layer, the refractive group layer and the adhesive layer are integrally arranged on the base film, and the adhesive layer is connected to the base film.

[0021] The present application also relates to a smart terminal, comprising a screen and the above-mentioned protective film covering the screen.

[0022] Optionally, the screen includes a folding screen, and the folding screen includes a first non-bending area, a second non-bending area, and a bending area connecting the first non-bending area and the second non-bending area.

[0023] Optionally, the first refractive portion is located on the first non-bending area, and the second refractive portion is located on the second non-bending area.

[0024] Optionally, a camera is arranged on the screen; and the refractive group layer is located on the camera.

[0025] The refractive group layer of the protective film of the present application is arranged on the second surface (lower surface) of the polymer layer, and the user's finger only contacts the protective layer arranged on the first surface (upper surface) of the polymer layer, which can prevent the refractive group layer from being scratched. The protective film of the present application has high transmittance, clearer imaging, and can reduce the user's visual perception of creases and the user's visual perception of dirt on the screen surface.

[0026] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specifically cites the preferred embodiments and describes them in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0028] Figure 1 A schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application;

[0029] Figure 2 A communication network system architecture diagram provided for an embodiment of the present application;

[0030] Figure 3 is a front view structural schematic diagram of the protective film of the first embodiment of the present application;

[0031] Figure 4 is a schematic cross-sectional structural diagram of a protective film according to a first embodiment of the present application;

[0032] Figure 5 It is a schematic diagram of the process of making a protective film according to the first embodiment of the present application;

[0033] Figure 6 is a schematic cross-sectional structural diagram of a protective film according to a second embodiment of the present application;

[0034] Figure 7 It is a schematic diagram of the process of making a protective film according to the second embodiment of the present application;

[0035] Figure 8 is a schematic cross-sectional structural diagram of a protective film according to a third embodiment of the present application;

[0036] Fig. 9 It is a schematic diagram of the process of making a protective film according to the third embodiment of the present application.

[0037] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0039] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. Optionally, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context in the specific embodiment.

[0040] It should be understood that, although the terms first, second, third, etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this article, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination". Furthermore, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or", "and / or", "including at least one of the following" etc. used in this application can be interpreted as inclusive, or mean any one or any combination. For example, “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”, and for another example, “A, B or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”. An exception to this definition will only occur when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0041] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0042] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0043] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0045] The smart terminal may be implemented in various forms. For example, the smart terminal described in this application may include smart terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0046] The subsequent description will be illustrated by taking a smart terminal as an example, and those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the construction according to the embodiments of the present application can also be applied to fixed-type terminals.

[0047] Figure 1 For a hardware structure diagram of a mobile terminal implementing each embodiment of the present application, please refer to Figure 1 , which is a schematic diagram of the hardware structure of a smart terminal for implementing various embodiments of the present application, the smart terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, A / V (audio / video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111 and other components. Those skilled in the art can understand that Figure 1 The structure of the smart terminal shown in the figure does not constitute a limitation on the smart terminal. The smart terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0048] Combine the following Figure 1 A detailed introduction to each component of the smart terminal:

[0049] The radio frequency unit 101 can be used for receiving and sending signals during information transmission or communication. Specifically, after receiving the downlink information of the base station, it is sent to the processor 110 for processing; in addition, the uplink data is sent to the base station. Generally, the radio frequency unit 101 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. In addition, the radio frequency unit 101 can also communicate with the network and other devices through wireless communication. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution) and 5G, etc.

[0050] WiFi is a short-range wireless transmission technology. The smart terminal can help users send and receive emails, browse web pages, and access streaming media through the WiFi module 102. It provides users with wireless broadband Internet access. Figure 1 The WiFi module 102 is shown, but it is understandable that it is not a necessary component of the smart terminal and can be omitted as needed without changing the essence of the invention.

[0051] The audio output unit 103 can convert the audio data received by the RF unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the smart terminal 100 is in a call signal receiving mode, a call mode, a recording mode, a voice recognition mode, a broadcast receiving mode, etc. Moreover, the audio output unit 103 can also provide audio output related to a specific function performed by the smart terminal 100 (for example, a call signal receiving sound, a message receiving sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.

[0052] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processor (GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 106. The image frame processed by the graphics processor 1041 can be stored in the memory 109 (or other storage medium) or sent via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a telephone call mode, a recording mode, a voice recognition mode, and other operating modes, and can process such sound into audio data. The processed audio (voice) data can be converted into a format output that can be sent to a mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 can implement various types of noise elimination (or suppression) algorithms to eliminate (or suppress) noise or interference generated in the process of receiving and sending audio signals.

[0053] The smart terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the panel 1061 according to the brightness of the ambient light, and the proximity sensor can turn off the panel 1061 and / or the backlight when the smart terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can also be configured on the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be repeated here.

[0054] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0055] The user input unit 107 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the intelligent terminal. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also known as a touch screen, can collect the user's touch operation on or near it (such as the user's operation on the touch panel 1071 or near the touch panel 1071 using any suitable object or accessory such as a finger, stylus, etc.), and drive the corresponding connection device according to a pre-set program. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the touch point coordinates, and then sends it to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Optionally, the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, a function key (such as a volume control key, a switch key, etc.), a trackball, a mouse, a joystick, etc., which are not specifically limited here.

[0056] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits it to the processor 110 to determine the type of touch event, and then the processor 110 provides a corresponding visual output on the panel 1061 according to the type of touch event. Figure 1 In the figure, the touch panel 1071 and the display panel 1061 are used as two independent components to realize the input and output functions of the smart terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the smart terminal, which is not limited here.

[0057] The interface unit 108 is used as an interface through which at least one external device can be connected to the smart terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, etc. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the smart terminal 100 or may be used to transmit data between the smart terminal 100 and an external device.

[0058] The memory 109 can be used to store software programs and various data. The memory 109 can mainly include a program storage area and a data storage area. Optionally, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 109 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0059] The processor 110 is the control center of the smart terminal. It uses various interfaces and lines to connect various parts of the entire smart terminal. It executes various functions of the smart terminal and processes data by running or executing software programs and / or modules stored in the memory 109, and calling data stored in the memory 109, so as to monitor the smart terminal as a whole. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 110.

[0060] The intelligent terminal 100 may also include a power supply 111 (such as a battery) for supplying power to various components. Preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, thereby managing functions such as charging, discharging, and power consumption through the power management system.

[0061] although Figure 1 Not shown, the smart terminal 100 may also include a Bluetooth module, etc., which will not be described in detail here.

[0062] To facilitate understanding of the embodiments of the present application, the communication network system on which the smart terminal of the present application is based is described below.

[0063] See also Figure 2 , Figure 2 A communication network system architecture diagram is provided for an embodiment of the present application, wherein the communication network system is an LTE system of universal mobile communication technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203 and an operator's IP service 204, which are connected in sequence for communication.

[0064] Optionally, UE201 may be the above-mentioned terminal 100, which will not be described in detail here.

[0065] E-UTRAN 202 includes eNodeB 2021 and other eNodeBs 2022 , etc. Optionally, eNodeB 2021 may be connected to other eNodeBs 2022 via a backhaul (eg, an X2 interface), and eNodeB 2021 is connected to EPC 203 , and eNodeB 2021 may provide UE 201 with access to EPC 203 .

[0066] EPC203 may include MME (Mobility Management Entity) 2031, HSS (Home Subscriber Server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, PGW (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME 2031 is a control node that processes signaling between UE 201 and EPC 203, and provides bearer and connection management. HSS 2032 is used to provide some registers to manage functions such as home location register (not shown in the figure), and store some user-specific information such as service features and data rates. All user data can be sent through SGW2034, PGW2035 can provide IP address allocation and other functions for UE 201, PCRF2036 is the policy and charging control policy decision point for service data flow and IP bearer resources, which selects and provides available policy and charging control decisions for the policy and charging execution function unit (not shown in the figure).

[0067] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem) or other IP services.

[0068] Although the above introduction takes the LTE system as an example, those skilled in the art should know that the present application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation here.

[0069] Based on the above-mentioned smart terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0070] First embodiment

[0071] Figure 3 1 is a schematic diagram of the front view structure of the protective film of the first embodiment of the present application. Figure 4 Schematic diagram of the cross-sectional structure of the protective film of the first embodiment of the present application. Figure 3 and Figure 4 As shown, the protective film includes a protective layer 12, a polymer layer 11, a refractive group layer 13 and an adhesive layer 14. The polymer layer 11 includes a first surface 112 and a second surface 113 opposite to each other. The protective layer 12 is arranged on the first surface 112, the refractive group layer 13 is arranged on the second surface 113, the adhesive layer 14 covers the refractive group layer 13, and the refractive group layer 13 includes at least one refractive material layer stacked.

[0072] The refractive group layer 13 of the protective film of the present application is disposed on the second surface 113 (lower surface) of the polymer layer 11, and the user's finger only contacts the protective layer 12 disposed on the first surface 112 (upper surface) of the polymer layer 11, which can prevent the refractive group layer 13 from being scratched. The protective film of the present application has high transmittance, clearer imaging, and can reduce the user's visual perception of creases and the user's visual perception of dirt on the screen surface.

[0073] Optionally, the refractive group layer 13 completely covers the second surface 113 .

[0074] Optionally, the adhesive layer 14 completely covers the refractive group layer 13 .

[0075] Optionally, the refractive group layer 13 includes a first refractive material layer 131 having a refractive index lower than a first threshold value, that is, only one first refractive material layer 131 is disposed between the polymer layer 11 and the adhesive layer 14 of the present application. In the present embodiment, the first refractive material layer 131 is formed on the second surface 113 of the polymer layer 11 by vacuum evaporation or magnetron sputtering of a low refractive index compound, and the compound is silicon dioxide or silicon carbide, but is not limited thereto.

[0076] Alternatively, if Figure 4 As shown, the refractive layer group 13 includes a first refractive material layer 131 having a refractive index lower than a first threshold value and a second refractive material layer 132 having a refractive index higher than a second threshold value, the first refractive material layer 131 is disposed on the second surface 113, and the second refractive material layer 132 is disposed between the first refractive material layer 131 and the adhesive layer 14. In this embodiment, the first refractive material layer 131 is formed on the second surface 113 of the polymer layer 11 by vacuum evaporation or magnetron sputtering of a low-refractive-index compound; the second refractive material layer 132 is formed on the first refractive material layer 131 by vacuum evaporation or magnetron sputtering of a high-refractive-index compound, and the compound is silicon dioxide or silicon carbide, but is not limited thereto.

[0077] Optionally, the refractive layer group 13 includes at least two first refractive material layers 131 and at least one second refractive material layer 132 , and the first refractive material layers 131 and the second refractive material layers 132 are alternately stacked.

[0078] Optionally, the number of the second refractive material layers 132 is less than or equal to the number of the first refractive material layers 131 .

[0079] Optionally, the thickness of the first refractive material layer 131 is an odd multiple of 1 / 4 of the length of the visible light wave (550 nm).

[0080] Optionally, the thickness of the second refractive material layer 132 is an odd multiple of 1 / 4 of the length of the visible light wave (550 nm).

[0081] Optionally, the polymer layer 11 is a high molecular polymer (PET); the thickness of the polymer layer 11 is greater than or equal to 25 um, for example, the thickness is 45 um to 55 um.

[0082] Optionally, the protective layer 12 is a hardened layer formed by mixing a hardened resin (HC) and a fluorine-containing additive (AF); the thickness of the protective layer 12 is greater than or equal to 3um, for example, the thickness is 3um to 6um. In this embodiment, the protective layer 12 can be formed on the first surface 112 of the polymer layer 11 by wet coating.

[0083] Optionally, the adhesive layer 14 is an optical adhesive (OCA), and its thickness is greater than or equal to 15 um, for example, its thickness is 20 um to 30 um.

[0084] Alternatively, if Figure 4 As shown, the protective film includes a first protective area 161, a second protective area 162 and a bending protective area 163, the bending protective area 163 is connected between the first protective area 161 and the second protective area 162, and the first protective area 161, the second protective area 162 and the bending protective area 163 are all provided with a refractive group layer 13.

[0085] Alternatively, if Figure 4 As shown, the protective film further includes a peelable base film 15, the polymer layer 11, the protective layer 12, the refractive group layer 13 and the adhesive layer 14 are integrally arranged on the base film 15, and the adhesive layer 14 is connected to the base film 15. When the protective film needs to be attached to the smart terminal, the base film 15 is peeled off from the protective film, and then adhered to the screen of the smart terminal by using the adhesive layer 14.

[0086] Optionally, Figure 5 Schematic diagram of the process of making a protective film according to the first embodiment of the present application. Figure 5 As shown, the process of making the protective film is as follows:

[0087] Prepare a polymer layer 11 roll, and form a protective layer 12 on a first surface 112 of the polymer layer 11;

[0088] Forming a low-refractive group layer 131 on the second surface 113 of the polymer layer 11;

[0089] forming a high refractive index group layer 132 on the low refractive index group layer 131;

[0090] Forming a glue layer 14 on the high-refractive group layer 132;

[0091] A base layer is provided on the adhesive layer 14 .

[0092] Second embodiment

[0093] Figure 6 Schematic diagram of the cross-sectional structure of the protective film of the second embodiment of the present application. Figure 6 As shown, the structure of the protective film of this embodiment is substantially the same as that of the protective film of the first embodiment, except that the refractive group layer 13 is not provided in part of the protective film of this embodiment.

[0094] Optionally, the refraction group layer 13 includes a first refraction portion and a second refraction portion, both of which are disposed on the second surface 113 , and a distance between the first refraction portion and the second refraction portion is greater than a first threshold.

[0095] Optionally, the stacking structures of the first refractive portion and the second refractive portion are the same or different.

[0096] Optionally, the first refractive portion and the second refractive portion have the same or different sizes.

[0097] Optionally, there is a gap between the first refractive portion and the second refractive portion, and the gap is located at the center of the polymer layer 11 .

[0098] Alternatively, if Figure 6 As shown, the protective film includes a first protection area 161, a second protection area 162 and a bending protection area 163, the bending protection area 163 is connected between the first protection area 161 and the second protection area 162, the bending protection area 163 is not provided with a refractive group layer 13, the first refractive portion is located in the first protection area 161, and the second refractive portion is located in the second protection area 162. Since the bending protection area 163 of the present application is not provided with a refractive group layer 13, the user's visual perception of the crease can be further reduced.

[0099] Optionally, at least a portion of the first protection area 161 is provided with a refractive group layer 13, which can reduce the user's visual perception of dirt on the screen surface.

[0100] Optionally, the first protection area 161 includes a first area 1611 and a second area 1612, the second area 1612 is connected between the first area 1611 and the bending protection area 163, the first area 1611 is provided with a first refraction part, that is, the area of ​​the first area 1611 is equal to the area of ​​the first refraction part, and the second area 1612 is not provided with a first refraction part.

[0101] Optionally, the width of the second region 1612 is greater than or equal to a third threshold, for example, the third threshold is 0.5 mm.

[0102] Optionally, at least a portion of the second protection region 162 is provided with a refractive group layer 13 .

[0103] Optionally, the second protection area 162 includes a third area 1621 and a fourth area 1622, the third area 1621 is connected between the fourth area 1622 and the bending protection area 163, the third area 1621 is not provided with a second refraction part, and the fourth area 1622 is provided with a second refraction part, that is, the area of ​​the fourth area 1622 is equal to the area of ​​the second refraction part.

[0104] Optionally, the width of the third region 1621 is greater than or equal to a fourth threshold, for example, the fourth threshold is 0.5 mm.

[0105] Optionally, Figure 7 : is a schematic diagram of the process of making a protective film according to the second embodiment of the present application. Figure 7 As shown, the process of making the protective film is as follows:

[0106] Prepare a polymer layer 11 sheet material, and form a protective layer 12 on a first surface 112 of the polymer layer 11;

[0107] Cutting the polymer layer 11 sheet material into sheets matching the size of the smart terminal;

[0108] A shielding fixture is disposed on the second surface 113 of the polymer layer 11 , and the shielding fixture shields the bending protection area, the second area 1612 and the third area 1621 ;

[0109] Forming a low-refractive group layer 131 on the second surface 113 of the polymer layer 11, that is, forming a low-refractive group layer 131 in the first area 1611 and the fourth area 1622;

[0110] forming a high refractive index group layer 132 on the low refractive index group layer 131;

[0111] Forming a glue layer 14 on the high-refractive group layer 132;

[0112] A base layer is provided on the adhesive layer 14 .

[0113] Third embodiment

[0114] Figure 8 is a schematic cross-sectional view of the protective film of the third embodiment of the present application. Figure 8 As shown, the structure of the protective film of this embodiment is substantially the same as that of the protective film of the first embodiment, except that the refractive group layer 13 is not provided in part of the protective film of this embodiment.

[0115] Optionally, the area of ​​the refractive group layer 13 is smaller than the area of ​​the second surface 113 , and the area of ​​the refractive group layer 13 is greater than the second threshold.

[0116] Optionally, the adhesive layer 14 covers the refractive group layer 13 and the polymer layer 11 , and the adhesive layer 14 surrounds the refractive group layer 13 .

[0117] Optionally, the protective film includes an imaging area 164 and a non-imaging area 165 that are connected to each other, the imaging area 164 is provided with a refractive group layer 13 , and the non-imaging area 165 is not provided with a refractive group layer 13 .

[0118] Optionally, the protective film includes an interconnected imaging area 164 and a non-imaging area 165, the refractive group layer 13 includes an interconnected middle area 13a and an edge area 13b, the edge area 13b is arranged around the circumference of the middle area 13a, the middle area 13a is located in the imaging area 164, and the edge area 13b is located in the non-imaging area 165.

[0119] Optionally, the diameter of the middle region 13a is greater than or equal to the width of the edge region 13b.

[0120] Optionally, the width of the edge region 13b is greater than or equal to a fifth threshold, for example, the fifth threshold is 0.5 mm.

[0121] Optionally, Fig. 9 : is a schematic diagram of the process of making a protective film according to the third embodiment of the present application. Fig. 9 As shown, the process of making the protective film is as follows:

[0122] Prepare a polymer layer 11 sheet material, and form a protective layer 12 on a first surface 112 of the polymer layer 11;

[0123] Cutting the polymer layer 11 sheet material into sheets matching the size of the smart terminal;

[0124] A shielding fixture is disposed on the second surface 113 of the polymer layer 11 , and the shielding fixture shields the non-imaging area 165 ;

[0125] A low-refractive group layer 131 is formed on the second surface 113 of the polymer layer 11, that is, a low-refractive group layer 131 is formed in the imaging area 164 and the partial non-imaging area 165;

[0126] forming a high refractive index group layer 132 on the low refractive index group layer 131;

[0127] Forming a glue layer 14 on the high-refractive group layer 132;

[0128] A base layer is provided on the adhesive layer 14 .

[0129] Fourth embodiment

[0130] The present application also relates to a smart terminal, comprising a screen and the above-mentioned protective film covering the screen.

[0131] Optionally, the screen includes a folding screen, the folding screen includes a first non-bending area, a second non-bending area and a bending area connecting the first non-bending area and the second non-bending area; the first refractive portion is located on the first non-bending area, and the second refractive portion is located on the second non-bending area.

[0132] Optionally, a camera is arranged on the screen; the refractive group layer 13 is located on the camera.

[0133] Please refer to the above for the structure and functions of the smart terminal, which will not be repeated here.

[0134] It is understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0135] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0136] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0137] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0138] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.

[0139] In the present application, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0140] The various technical features of the technical solution of the present application can be arbitrarily combined. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0141] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as above, and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to execute the method of each embodiment of the present application.

[0142] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loading and executing computer program instructions on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, a data center, etc. that contains one or more available media integrated. The available medium can be a magnetic medium, (e.g., a floppy disk, a storage disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state storage disk Solid State Disk (SSD)), etc.

[0143] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A protective film, characterized in that: The invention comprises a protective layer, a polymer layer, a refractive group layer and an adhesive layer, wherein the polymer layer comprises a first surface and a second surface opposite to each other, the protective layer is arranged on the first surface, the refractive group layer is arranged on the second surface, the adhesive layer covers the refractive group layer, and the refractive group layer comprises at least one refractive material layer arranged in a stacked manner.

2. The protective film according to claim 1, characterized in that The refraction group layer includes a first refraction portion and a second refraction portion, the first refraction portion and the second refraction portion are both arranged on the second surface, and a distance between the first refraction portion and the second refraction portion is greater than a first threshold.

3. The protective film according to claim 2, characterized in that: Include at least one of the following: The stacked structures of the first refractive portion and the second refractive portion are the same or different; The sizes of the first refractive portion and the second refractive portion are the same or different; A gap between the first refractive portion and the second refractive portion is located at a center of the polymer layer.

4. The protective film according to claim 1, characterized in that Include at least one of the following: The refractive group layer completely covers the second surface; The area of ​​the refractive group layer is smaller than the area of ​​the second surface, and the area of ​​the refractive group layer is greater than a second threshold.

5. The protective film according to claim 4, characterized in that: Include at least one of the following: The adhesive layer completely covers the refractive group layer; The adhesive layer covers the refractive group layer and the polymer layer, and the adhesive layer surrounds the refractive group layer.

6. The protective film according to any one of claims 1 to 5, characterized in that: The refractive group layer includes at least one of the following: a first refractive material layer having a refractive index lower than a first threshold; a second refractive material layer having a refractive index higher than a second threshold; The number of the second refractive material layers is less than the number of the second refractive material layers; The first refractive material layers and the second refractive material layers are alternately stacked; The first refractive material layer is disposed on the second surface.

7. The protective film according to any one of claims 1 to 5, characterized in that: The protective film further comprises a peelable base film, the polymer layer, the protective layer, the refractive group layer and the adhesive layer are integrally arranged on the base film, and the adhesive layer is connected to the base film. 8 . A smart terminal, comprising a screen and the protective film according to any one of claims 1 to 7 covering the screen.

9. The intelligent terminal according to claim 8, characterized in that: The screen comprises a folding screen, wherein the folding screen comprises a first non-bending area, a second non-bending area, and a bending area connecting the first non-bending area and the second non-bending area; The refraction group layer includes a first refraction portion and a second refraction portion, the first refraction portion is located on the first non-bending area, and the second refraction portion is located on the second non-bending area.

10. The intelligent terminal according to claim 8, characterized in that: A camera is arranged on the screen; and the refractive group layer is located on the camera.

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