Touch screen, electronic equipment, protective shell and equipment set

Abstract

The invention provides a touch screen, electronic equipment, a protective shell and an equipment suite, the touch screen comprises a plurality of touch units, and the plurality of touch units are arranged in an array; each touch unit comprises an insulating layer, and a driving electrode and an induction electrode which are arranged on the insulating layer, and the driving electrode and the induction electrode are mutually insulated; wherein in the thickness direction of the touch unit, the orthographic projection area of the driving electrodes on the insulating layer is larger than the orthographic projection area of the sensing electrodes on the insulating layer, the touch screen can improve the screen shaking problem generated during multi-finger touch, and the touch effect and the use experience of the electronic equipment are improved.

Description

Technical Field

[0001] The present application relates to the field of terminal product equipment, and in particular to a touch screen, an electronic device, a protective case and a device set. Background Art

[0002] In the related technology, most touch screens are mutual capacitance sensing touch screens. When a finger touches the sensing layer of the touch screen, according to the mutual capacitance principle, when the touch screen is operated in a suspended state, the suspension effect is enhanced, and the change in capacitance caused by the finger is small. Moreover, when multiple fingers touch in the suspended state, the suspension effect is stronger, resulting in unstable touch signals generated by the touch screen and screen jitter, affecting the user experience. Summary of the invention

[0003] The present application provides a touch screen, an electronic device, a protective case and a device set to solve the screen shaking problem when the touch screen of the electronic device is subjected to multi-finger touch, thereby improving the touch effect and user experience of the electronic device.

[0004] In a first aspect, the present application provides a touch screen, comprising a plurality of touch control units, wherein the plurality of touch control units are arranged in an array; each of the touch control units comprises an insulating layer and a driving electrode and a sensing electrode disposed on the insulating layer, wherein the driving electrode and the sensing electrode are insulated from each other;

[0005] Wherein, along the thickness direction of the touch control unit, the orthographic projection area of ​​the driving electrode on the insulating layer is larger than the orthographic projection area of ​​the sensing electrode on the insulating layer.

[0006] In a second aspect, the present application further provides an electronic device, comprising a housing and the touch screen as described above, wherein the touch screen is connected to the housing.

[0007] In a third aspect, the present application further provides a protective case for cooperating with an electronic device, wherein the electronic device comprises a middle frame and the touch screen as described above, and the touch screen is connected to the middle frame;

[0008] The protective shell includes a fifth side wall, a sixth side wall, a seventh side wall and an eighth side wall for engaging with the middle frame, the fifth side wall, the sixth side wall, the seventh side wall and the eighth side wall are connected in sequence, and the fifth side wall and the seventh side wall are arranged opposite to each other, and the sixth side wall and the eighth side wall are arranged opposite to each other;

[0009] Wherein, the fifth side wall and the seventh side wall are provided with a first notch penetrating through the thickness direction of the protective shell; and / or,

[0010] The sixth side wall and the eighth side wall are provided with a second notch penetrating through the thickness direction of the protective shell.

[0011] In a fourth aspect, the present application also provides a device set, including an electronic device and the protective case as described above.

[0012] In the present application, by setting the orthographic projection area of ​​the driving electrode of the touch unit on the insulating layer to be larger than the orthographic projection area of ​​the sensing electrode on the insulating layer, that is, when the area of ​​the touch unit is constant, the area of ​​the driving electrode is larger than the area of ​​the sensing electrode, the coupling capacitance between the human body and the driving electrode can be increased, the coupling capacitance between the human body and the sensing electrode can be reduced, the suspension effect can be alleviated, the screen jitter problem that is easily generated when the touch screen is multi-finger touched can be improved, the touch effect of the electronic device can be improved, and the user experience can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0014] Figure 1 A first schematic diagram of an electronic device provided in an embodiment of the present application.

[0015] Figure 2 A second schematic diagram of an electronic device provided in an embodiment of the present application.

[0016] Figure 3 Schematic diagram of the structure of the touch control unit of the touch screen according to the embodiment of the present application.

[0017] Figure 4 Schematic diagram of an equivalent circuit when the touch screen of an embodiment of the present application is in a touch state.

[0018] Figure 5 Schematic diagram of a circuit for performing multi-finger touch on a touch screen according to an embodiment of the present application.

[0019] Figure 6 It is a cross-sectional view of a middle frame of an electronic device according to an embodiment of the present application.

[0020] Figure 7 for Figure 6 A partial enlarged view of point A in the middle.

[0021] Figure 8 for Figure 1 A cross-sectional view of the electronic device along section BB.

[0022] Fig. 9 A first structural schematic diagram of the protective shell provided in an embodiment of the present application.

[0023] Fig.10A second structural schematic diagram of the protective shell provided in an embodiment of the present application.

[0024] Fig.11 A third structural schematic diagram of the protective shell provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the attached examples of the present application Figure 1 To Attachment Fig.11 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0026] In the description of this application, it should be understood that terms such as "first" and "second" are only used to distinguish similar objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0027] The present application provides an electronic device.

[0028] It is understood that the “electronic device” (or simply “terminal”) used herein includes, but is not limited to, a device configured to receive / send communication signals via a wired line connection (such as via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (for example, for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a “wireless communication terminal”, a “wireless terminal”, or a “mobile terminal”.

[0029] Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communication System (PCS) terminals that can combine cellular radio telephones with data processing, fax and data communication capabilities; PDAs that can include radio telephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module, and the following will take a mobile phone as an example to describe the electronic device in detail.

[0030] Please refer to Figure 1 and Figure 2 , Figure 1A first schematic diagram of an electronic device provided in an embodiment of the present application, Figure 2 The second schematic diagram of the electronic device provided in the embodiment of the present application. The electronic device 10 may include components such as a housing 100, a touch screen 200, a camera module 400, and a mainboard 600.

[0031] The touch screen 200 is disposed on the housing 100 to form a display surface of the electronic device 10 for displaying information such as images and texts. The touch screen 200 is also used for being touched by a user to implement a touch function of the electronic device 10.

[0032] The housing 100 is used to form the outer contour of the electronic device 10, so as to accommodate the electronic devices and functional components of the electronic device 10, and at the same time to seal and protect the electronic devices and functional components inside the electronic device 10. For example, the electronic devices and functional components such as the mainboard 600, battery, and sensor of the electronic device 10 can be arranged inside the housing 100. It can be understood that the housing 100 may include a middle frame 110 and a back cover 120.

[0033] The middle frame 110 may be a thin plate or sheet structure, or a hollow frame structure. The middle frame 110 is used to provide support for the electronic devices or functional components in the electronic device 10, so as to install the electronic devices and functional components of the electronic device 10 together. The back cover 120 is used to seal the electronic devices and functional components of the electronic device 10 inside the electronic device 10 together with the middle frame 110 and the touch screen 200, so as to protect the electronic devices and functional components of the electronic device 10.

[0034] The middle frame 110 is also provided with a charging interface (not shown), which is electrically connected to the battery in the housing 100 , and is also used to connect to an external power source to charge the electronic device 10 .

[0035] The mainboard 600 is disposed inside the housing 100. For example, the mainboard 600 can be mounted on the middle frame 110 of the housing 100 for fixing, and the mainboard is sealed inside the electronic device 10 through the back cover 120. Among them, one or more functional components such as a processor, an earphone jack, an acceleration sensor, a gyroscope, and a motor can be integrated on the mainboard 600. At the same time, the touch screen 200 can be electrically connected to the mainboard 600 to control the display and touch operation of the touch screen 200 through the processor on the mainboard.

[0036] In the related art, the touch screen 200 is mostly a mutual capacitance sensing touch screen. When a finger touches the sensing layer of the touch screen 200, according to the mutual capacitance principle, when the touch screen 200 is operated in a suspended state, the suspension effect is enhanced, and the change in capacitance caused by the finger is small. In addition, when multiple fingers are touched in the suspended state, the suspension effect is stronger, resulting in an unstable touch signal generated by the touch screen 200 and a screen shaking phenomenon, which affects the user experience. It should be noted that the suspended state refers to the touch screen 200 being touched without direct contact with the mobile phone or when the human body and the mobile phone are poorly grounded, such as when the mobile phone is placed on a desktop, or when the mobile phone is covered with a thick protective shell 20 and the touch screen 200 is touched.

[0037] To solve the above problems, the present application provides a touch screen 200. The touch screen 200 includes a plurality of touch control units 210, and the plurality of touch control units 210 are arranged in an array. Figure 3 , Figure 3 A schematic diagram of the structure of a touch control unit of a touch screen provided in an embodiment of the present application. Each touch control unit 210 includes an insulating layer 213 and a driving electrode 211 and a sensing electrode 212 disposed on the insulating layer 213. The driving electrode 211 and the sensing electrode 212 are insulated from each other.

[0038] Specifically, the driving electrode 211 extends along a first direction, the sensing electrode 212 extends along a second direction, and the driving electrode 211 and the sensing electrode 212 are bridged to each other, wherein the first direction and the second direction are perpendicular to the thickness direction of the touch control unit 210, and the first direction and the second direction are perpendicular to each other. It can be understood that the driving electrode 211 and the sensing electrode 212 are bridged to each other, which means that the orthographic projection of the driving electrode 211 on the insulating layer 213 overlaps with the orthographic projection of the sensing electrode 212 on the insulating layer 213, but the distances from the overlapping parts of the corresponding projections of the driving electrode 211 and the sensing electrode 212 to the insulating layer 213 are different, that is, the driving electrode 211 and the sensing electrode 212 are insulated and cross-arranged.

[0039] Please refer to Figure 4 , Figure 4 : is a schematic diagram of an equivalent circuit when the touch screen of the embodiment of the present application is in a touch state. Among them, the coupling capacitance between the driving electrode 211 and the sensing electrode 212 is Cm, the coupling capacitance between the finger and the driving electrode 211 is Ct, the coupling capacitance between the finger and the sensing electrode 212 is Cr, and the coupling capacitance between the human body and the system ground of the mobile phone is C body When the touch screen 200 is in a normal touch state and the grounding of the human body and the mobile phone is good, the coupling capacitance C between the human body and the system ground of the mobile phone bodyThe charge flowing out of the driving electrode TX flows to the system ground of the mobile phone through the finger, and the charge received by the sensing electrode RX at the finger touch position is significantly reduced, thereby recognizing the finger touch. When the touch screen 200 is in a suspended state or the mobile phone is in a plastic shell, the coupling capacitance C between the human body and the system ground of the mobile phone body It is very small, which is equivalent to a short circuit. It is not easy for the charge to flow directly to the system ground through the finger. The charge often flows to the sensing electrode RX through the coupling capacitance between the finger and the sensing electrode RX. The charge received by the sensing electrode RX at the finger touch position does not decrease significantly, and the touch signal does not change significantly, which is prone to a short circuit.

[0040] Please refer to Figure 5 , Figure 5 The circuit diagram of the touch screen of the embodiment of the present application for multi-finger touch control is shown in FIG. TX1 and TX3 are two spaced driving electrodes 211, RX1 and RX3 are two spaced sensing electrodes 212, A1 is the touch point of one finger, A2 is the touch point of another finger, B1 is a coupling point generated by multi-finger touch control, and B2 is another coupling point generated by multi-finger touch control. When the touch screen 200 is in the suspended state, due to the coupling capacitance C between the human body and the system ground of the mobile phone, body Very small. For touch point A1, the charge flowing out from the driving electrode 211 (for example, driving electrode TX1) is not easy to flow directly to the system ground through the finger, but flows to the sensing electrode 212 through the coupling capacitance between the finger and the sensing electrode 212 (for example, sensing electrode RX3). That is, the charge flowing out from the driving electrode TX1 flows along the first branch i1 and the second branch i2 to the sensing electrode RX3, generating a negative pit at the coupling point B1. Similarly, for touch point A2, a negative pit will also be generated at the coupling point B2. When the fingers are coaxial, the area where the signals influence each other overlaps with the finger pressing area, which will cause data fluctuations and signal crosstalk, thereby causing jitter of the touch point.

[0041] According to the equivalent circuit, the calculation formula of the equivalent capacitance Cm' at the coupling point is:

[0042]

[0043] According to the formula, by reducing the coupling capacitance between the driving electrode 211 and the finger, and the coupling capacitance between the sensing electrode 212 and the finger, the capacitance of the coupling point can be reduced. The coupling capacitance is positively correlated with the relative area. By reducing the area of ​​the driving electrode 211 and the sensing electrode 212, the coupling capacitance between the driving electrode 211 and the finger, and the coupling capacitance between the sensing electrode 212 and the finger can be reduced.

[0044] Optionally, in one embodiment, a dimension of each touch unit 210 along at least one of the first direction and the second direction is between 3.5 mm and 4.0 mm.

[0045] According to the manufacturing experience of the touch control unit 210, and taking into account the overall layout of the driving electrodes 211 and the sensing electrodes 212 in each touch control unit 210, the dimensions of the touch control unit 210 in the first direction and the second direction (i.e., the length dimension and the width dimension of the touch control unit 210) are designed to be between 3.5 and 4.0 mm. Compared with the conventional dimension of the touch control unit 210 of 4.2×4.2 mm in the related art, the area of ​​the touch control unit 210 is reduced, and the area of ​​the driving electrodes 211 and the sensing electrodes 212 of each touch control unit 210 can be reduced, thereby reducing the coupling capacitance between the driving electrode 211 and the finger, and reducing the coupling capacitance between the sensing electrode 212 and the finger.

[0046] For example, the size of each touch unit 210 along the first direction and the second direction can be 3.8 mm, that is, the length and width of the touch unit 210 are both 3.8 mm. Compared with the touch unit in the related art, the area of ​​the touch unit 210 in the embodiment of the present application is reduced by about 10%, wherein the area of ​​the driving electrode 211 can be reduced by 10%, and the area of ​​the sensing electrode 212 can also be reduced by 10%.

[0047] In order to further improve the screen shaking phenomenon, along the thickness direction of the touch control unit 210 , the orthographic projection area of ​​the driving electrode 211 on the insulating layer 213 is larger than the orthographic projection area of ​​the sensing electrode 212 on the insulating layer 213 .

[0048] The orthographic projection area of ​​the driving electrode 211 on the insulating layer 213 is larger than the orthographic projection area of ​​the sensing electrode 212 on the insulating layer 213 . It can also be understood that the area of ​​the driving electrode 211 is larger than the area of ​​the sensing electrode 212 .

[0049] It can be understood that, when the overall size of the touch unit 210 is constant, by increasing the area of ​​the driving electrode 211 and reducing the area of ​​the sensing electrode 212, the coupling capacitance Cm between the human body and the driving electrode 211 can be increased, and the coupling capacitance Cr between the human body and the sensing electrode 212 can be reduced, which can reduce the suspension effect of the touch screen 200 and improve the screen shaking phenomenon during multi-finger touch.

[0050] Exemplarily, in some embodiments, along the thickness direction of the touch control unit 210, the ratio of the orthographic projection area of ​​the driving electrode 211 on the insulating layer 213 to the orthographic projection area of ​​the sensing electrode 212 on the insulating layer 213 is between 1.5 and 3, that is, the ratio of the area of ​​the driving electrode 211 to the area of ​​the sensing electrode 212 is between 1.5 and 3.

[0051] In order to further improve the screen shaking phenomenon when the touch screen 200 is subjected to multi-finger touch, the grounding property between the human body and the electronic device 10 can be improved to reduce the suspension effect and enhance the coupling capacitance between the human hand and the touch screen 200, thereby improving the touch performance.

[0052] For example, when a user holds a mobile phone, his palm or fingers will come into contact with the middle frame 110 of the mobile phone. Then, the middle frame 110 can be set as a metal part, and the middle frame 110 can be connected to the system ground of the mobile phone to improve the grounding performance of the human body and the mobile phone. However, the middle frame 110 is usually designed with a boss or groove structure for positioning and installing the internal components of the mobile phone, which makes the overall shape of the middle frame 110 more complicated. If the middle frame 110 is made of metal parts, it needs to be formed by mechanical processing (for example, CNC processing), with many processing steps and complicated processing, resulting in a relatively high production cost of the metal middle frame 110, which is not conducive to the production cost control of the mobile phone.

[0053] In order to improve the grounding performance of the electronic device 10 and reduce the manufacturing cost of the middle frame 110, for example, please refer to Figure 6 and Figure 7 , Figure 6 is a cross-sectional view of a middle frame of an electronic device according to an embodiment of the present application, Figure 7 for Figure 6 The middle frame 110 includes a metal frame 111 and a non-metal layer 112 covering the metal frame 111 , and at least a portion of the metal frame 111 is exposed outside the non-metal layer 112 .

[0054] It can be understood that since the middle frame 110 includes a metal frame 111 and a non-metallic layer 112 covering the metal frame 111, the main appearance surface of the middle frame 110 is the non-metallic layer 112, and the exposed portion of the metal frame 111 is only a small area, the middle frame 110 has relatively low requirements on the accuracy and surface finish of the metal frame 111, the machining process of the metal frame 111 can be simplified, the production cost of the middle frame 110 can be reduced, and it is beneficial to control the production cost of the mobile phone; moreover, by exposing at least part of the metal frame 111 outside the non-metallic layer 112, then, when the user holds the mobile phone, the user's palm or finger can contact the part of the metal frame 111 exposed from the non-metallic layer 112 to achieve grounding, so that good grounding performance can be achieved when the exterior of the mobile phone middle frame 110 is mainly made of non-metallic material.

[0055] The metal frame 111 may be made of metal materials such as stainless steel, aluminum, and aluminum alloy. The non-metal layer 112 may be plastic, for example, the material of the non-metal layer 112 may be PC (Polycarbonate). Specifically, the non-metal layer 112 may be formed on the metal frame 111 by an injection molding process, so that the non-metal layer 112 covers the metal frame 111.

[0056] It can also be understood that by setting the middle frame 110 to include a metal frame 111 and a non-metallic layer 112 coated on the metal frame 111, the metal frame 111 is equivalent to the skeleton of the middle frame 110. The metal frame 111 can enhance the rigidity and overall strength of the middle frame 110 and prevent the middle frame 110 from being easily deformed when under pressure, so that the middle frame 110 can cooperate with other structures to maintain the overall structure of the electronic device 10; at the same time, the metal frame 111 can also enhance the toughness of the middle frame 110 and prevent the middle frame 110 from breaking when it collides or falls.

[0057] It should be noted that the metal frame 111 can be a full circle of annular brackets (such as Figure 6 As shown in FIG. 1 , the thickness of each part of the annular support may be different, so that when the non-metal layer 112 covers the annular support, the thicker part thereof is not covered by the non-metal layer 112 and is exposed outside the non-metal layer 112. For example, the surface of the annular support may protrude to form a boss 111a (as shown in FIG. Figure 7 As shown in FIG. 1 , the non-metallic layer 112 does not extend beyond the top surface of the boss 111a when covering the annular bracket. The metal frame 111 may also be composed of a plurality of independent brackets, which may be interconnected, or may be spaced apart and evenly distributed at various locations of the non-metallic layer 112.

[0058] Please continue to refer to Figure 6 The middle frame 110 includes a first side wall 113, a second side wall 114, a third side wall 115 and a fourth side wall 116 which are connected in sequence. The first side wall 113 and the third side wall 115 are arranged opposite to each other, and the second side wall 114 and the fourth side wall 116 are arranged opposite to each other.

[0059] It can be understood that the first side wall 113, the second side wall 114, the third side wall 115 and the fourth side wall 116 are connected to form the outline of the mobile phone. Generally speaking, the outline of the mobile phone can be a rectangle (including a rectangle and a rounded rectangle), and the length of two opposite side walls is greater than the length of the other two opposite side walls. For example, the length of the first side wall 113 and the third side wall 115 can be greater than the length of the second side wall 114 and the fourth side wall 116, or the length of the second side wall 114 and the fourth side wall 116 can be greater than the length of the first side wall 113 and the third side wall 115. The embodiment of the present application is attached Figure 6The former is set as an example and cannot be regarded as a limitation of the present application.

[0060] In some embodiments, at least a portion of the metal frame 111 corresponding to the first side wall 113 and the third side wall 115 is exposed outside the non-metal layer 112. In other embodiments, at least a portion of the metal frame 111 corresponding to the second side wall 114 and the fourth side wall 116 is exposed outside the non-metal layer 112. In still other embodiments, at least a portion of the metal frame 111 corresponding to the first side wall 113 and the third side wall 115 is exposed outside the non-metal layer 112, and at least a portion of the metal frame 111 corresponding to the second side wall 114 and the fourth side wall 116 is exposed outside the non-metal layer 112.

[0061] Exemplarily, in one embodiment, the lengths of the first side wall 113 and the third side wall 115 are greater than the lengths of the second side wall 114 and the fourth side wall 116 , and at least a portion of the metal frame 111 corresponding to the second side wall 114 and the fourth side wall 116 is exposed outside the non-metal layer 112 . That is, the first side wall 113 and the third side wall 115 are two longer side walls of the mobile phone, and the second side wall 114 and the fourth side wall 116 are two shorter side walls of the mobile phone. When the user operates the mobile phone in a game scene, the mobile phone is usually held horizontally, and the user's hands are more in contact with the two shorter side walls of the mobile phone, and the user's hands are more in contact with the second side wall 114 and the fourth side wall 116. By setting the metal frame 111 corresponding to at least a portion of the second side wall 114 and the fourth side wall 116 exposed outside the non-metallic layer 112, the user's hand can be in contact with the portion of the metal frame 111 exposed from the non-metallic layer 112, so that the user can achieve better grounding when performing multi-finger touch in the game scene, can increase the coupling capacitance between the user's hand and the touch screen 200, can reduce signal crosstalk, thereby improving the screen shaking phenomenon during multi-finger operation of the touch screen 200, and enhancing the user's experience.

[0062] Please refer to Figure 8 , Figure 8 for Figure 1 The electronic device 10 further includes a first metal sheet 300 , which is disposed on a side of the back cover 120 facing the middle frame 110 , and is connected to the system ground of the electronic device 10 .

[0063] By providing a first metal sheet 300 on the side of the back cover 120 facing the middle frame 110, and the first metal sheet 300 is connected to the system ground of the mobile phone, that is, the first metal sheet 300 becomes a part of the system ground of the mobile phone. Then, when the user holds the mobile phone (the finger is in contact with the back cover 120), the distance between the finger and the system ground of the mobile phone is the thickness of the back cover 120, so that the distance between the finger and the system ground is reduced, and the coupling capacitance between the finger and the touch screen 200 can be increased (the size of the coupling capacitance is negatively correlated with the relative distance), which can reduce signal crosstalk, thereby improving the screen shaking phenomenon when the touch screen 200 is operated with multiple fingers.

[0064] The first metal sheet 300 needs to be kept at a relatively small thickness to avoid increasing the overall thickness of the electronic device 10. For example, the first metal sheet 300 may be a copper foil, which may be adhered to the side of the back cover 120 facing the middle frame 110 by glue.

[0065] It is understandable that the larger the area of ​​the first metal sheet 300 covering the back cover 120, the larger the relative area between the finger and the system ground, the larger the coupling capacitance formed between the finger and the touch screen 200, and the more conducive to reducing the screen shaking phenomenon during multi-finger operation of the touch screen 200. It should be noted that the area of ​​the first metal sheet 300 should not be too large, and the area and setting position range of the first metal sheet 300 should take into account the setting position of the antenna inside the mobile phone to ensure that the back cover 120 corresponds to the position where the antenna exists inside the mobile phone to leave a clear area, so as to avoid the first metal sheet 300 shielding the antenna signal of the mobile phone and avoid affecting the signal strength of the electronic device 10.

[0066] Please refer again Figure 2 The electronic device 10 further includes a camera module 400 and a metal decoration 500 covering the camera module 400. The back cover 120 is provided with a through hole 121 for the metal decoration 500 to pass through, so that the metal decoration 500 is exposed on the side of the back cover 120 away from the middle frame 110.

[0067] Among them, the camera module 400 here refers to the rear camera module, and the camera module 400 includes a lens 410. The light incident side of the lens 410 faces the side of the back cover 120 away from the middle frame 110 to collect light from the external environment of the back cover 120 for realizing the photo or video recording function of the mobile phone.

[0068] The metal decorative part 500 is used to isolate and protect the camera module 400. At the same time, the metal decorative part 500 cooperates with the back cover 120, the middle frame 110 and the touch screen 200 to seal the electronic components and functional components of the mobile phone inside the mobile phone. At the same time, the side where the back cover 120 is located is the main appearance surface of the mobile phone. The metal decorative part 500 can be used as the appearance part of the mobile phone. By designing the shape and color of the metal decorative part 500, the appearance effect of the mobile phone can be improved.

[0069] It is understandable that the metal decorative part 500 is provided with a light-transmitting hole 510 , which is opposite to the lens 410 to expose the lens 410 , so that light from the external environment can enter the lens 410 through the light-transmitting hole 510 , thereby realizing the imaging function of the camera module 400 .

[0070] It can be understood that by setting the metal decorative part 500 to cover the camera module 400, compared with using glass, plastic and other materials, when the user holds the mobile phone, the user's hand can contact the metal decorative part 500 to achieve grounding, which can increase the coupling capacitance between the user's hand and the touch screen 200, reduce the suspension effect of the touch screen 200, reduce the touch signal crosstalk, and improve the screen shaking phenomenon during multi-finger operation of the touch screen 200.

[0071] In some embodiments, the electronic device further includes a processor (not shown). The processor may be a central processing unit (CPU), and the processor may be disposed on a mainboard and electrically connected to the mainboard.

[0072] The processor is used to control the electronic device 10 to issue a prompt to reduce the chirality gear when a game scene is detected, and the chirality gear is positively correlated with the touch detection accuracy of the touch screen 200. Alternatively, the processor is used to control the electronic device 10 to reduce the chirality gear when a game scene is detected.

[0073] The chirality of the touch screen 200 is inversely proportional to the screen jitter of the touch screen 200, that is, the better the chirality of the touch screen 200 is, the more likely the screen jitter will occur when playing games. In this embodiment, the processor detects whether the mobile phone is in a game scene. When in the game scene, the processor controls to reduce the chirality gear of the touch screen 200 to a certain extent, so that the touch screen 200 maintains a slightly better chirality while reducing the screen jitter of the touch screen 200.

[0074] The embodiment of the present application also provides a protective shell 20 and a device set.

[0075] The device set includes an electronic device 10 and a protective shell 20. Specifically, the protective shell 20 is used to cooperate with the electronic device 10 to protect the electronic device 10. Among them, the electronic device 10 is an electronic device 10 based on the above-mentioned inventive concept, and the specific structure of the electronic device 10 is not described here. The electronic device 10 can be a product or device with a touch display function such as a mobile phone, a tablet computer, an e-book, a display, etc. For example, when the electronic device 10 is a mobile phone, the protective shell 20 can be fitted on the shell 100 of the mobile phone (covering the middle frame 110 and the back cover 120) to protect the mobile phone. On the one hand, the protective shell 20 can be made of a flexible or elastic material, so that the protective shell 20 has a buffering effect, which can absorb the impact force when the mobile phone collides or falls, prevent the touch screen 200 from being easily broken by force, and prevent the internal components of the mobile phone from being damaged; on the other hand, the protective shell 20 isolates the mobile phone shell 100 from other objects, which can prevent hard objects or particles from scratching the shell 100. The protective shell 20 will be described below by taking the electronic device 10 as a mobile phone as an example.

[0076] Since the protective shell 20 is applied to the electronic device 10 based on the above-mentioned inventive concept, when the electronic device 10 cooperates with the protective shell 20, that is, the touch screen 200 of the electronic device 10 is in a suspended state, since the area of ​​the driving electrode 211 of the touch unit 210 of the touch screen 200 is larger than the area of ​​the sensing electrode 212, the coupling capacitance between the human body and the driving electrode 211 can be increased, and the coupling capacitance between the human body and the sensing electrode 212 can be reduced, and the coupling capacitance formed at the coupling point during multi-finger touch can be reduced, and the influence caused by the suspension effect can be alleviated, and the screen shaking phenomenon caused by multi-finger touch due to poor grounding of the human body and the electronic device 10 caused by the electronic device 10 wearing the protective shell 20 can be improved.

[0077] It is understandable that the contour shape of the protective shell 20 corresponds to the contour shape of the mobile phone, so that the protective shell 20 can better match the mobile phone. Fig. 9 , Fig. 9 The first structural schematic diagram of the protective shell provided in the embodiment of the present application. The protective shell 20 includes a bottom wall 211 and a plurality of side walls connected to the bottom wall 211, the plurality of side walls include a fifth side wall 212, a sixth side wall 213, a seventh side wall 214 and an eighth side wall 215 for engaging with the middle frame 110, the fifth side wall 212, the sixth side wall 213, the seventh side wall 214 and the eighth side wall 215 are connected in sequence, and the fifth side wall 212 and the seventh side wall 214 are arranged opposite to each other, and the sixth side wall 213 and the eighth side wall 215 are arranged opposite to each other.

[0078] Since the outline of the protective shell 20 corresponds to the outline of the mobile phone, and the outline of the mobile phone can be a rectangle, the length of two opposite side walls of the protective shell 20 is greater than the length of the other two opposite side walls. Fig. 9 As shown, the length of the sixth side wall 213 and the eighth side wall 215 is greater than the length of the fifth side wall 212 and the seventh side wall 214, that is, the sixth side wall 213 and the eighth side wall 215 are the two longer side walls of the protective shell 20, and the fifth side wall 212 and the seventh side wall 214 are the two shorter side walls of the protective shell 20.

[0079] In order to further improve the touch effect of the mobile phone when wearing the protective case 20 , the fifth side wall 212 and the seventh side wall 214 are provided with a first notch 216 penetrating through the thickness direction of the protective case 20 .

[0080] It should be noted that the thickness direction of the protective shell 20 here refers to the wall thickness direction of the shell body of the protective shell 20, that is, the thickness direction of the side wall, rather than the height direction of the shell body of the protective shell 20.

[0081] By providing the fifth side wall 212 and the seventh side wall 214 with a first notch 216 that runs through the thickness direction thereof, when the protective case 20 is matched with the mobile phone, the middle frame 110 of the mobile phone corresponding to the first notch 216 will be exposed, so that when the user holds the mobile phone wearing the protective case 20, the user's hand can contact the middle frame 110 exposed from the first notch 216.

[0082] Exemplarily, in one embodiment, the length of the fifth side wall 212 and the seventh side wall 214 of the protective shell 20 is smaller than the length of the sixth side wall 213 and the eighth side wall 215, and the fifth side wall 212 and the seventh side wall 214 are provided with a first notch 216 that passes through the thickness direction of the protective shell 20, the length of the second side wall 114 and the fourth side wall 116 of the middle frame 110 is smaller than the length of the first side wall 113 and the third side wall 115, and at least part of the second side wall 114 and the fourth side wall 116 of the metal frame 111 of the middle frame 110 is exposed outside the non-metallic layer 112. In this way, the second side wall 114 and the fourth side wall 116 are two shorter side walls of the mobile phone, and the fifth side wall 212 and the seventh side wall 214 are two shorter side walls of the protective shell 20, so that when the protective shell 20 is matched with the mobile phone, the second side wall 114 and the fourth side wall 116 are located at the first notch 216. The portion of the metal frame 111 corresponding to the second side wall 114 and the fourth side wall 116 is exposed outside the non-metallic layer 112 and at least part of it is exposed through the first notch 216. Then, when the user holds and wears the protective shell 20, When the mobile phone is wearing the protective case 20, especially when the user is operating the mobile phone in a game scene, the user's hand can contact the second side wall 114 and the fourth side wall 116 exposed at the first notch 216, so that the user's hand can contact the metal frame 111 exposed at the first notch 216, so that even when the mobile phone is wearing the protective case 20, better grounding can be achieved in the game scene, which can increase the coupling capacitance between the user's hand and the touch screen 200, reduce touch signal crosstalk, and improve the screen shaking phenomenon when the touch screen 200 is operated with multiple fingers.

[0083] Please refer to Fig.10 , Fig.10 A second structural diagram of the protective case provided in an embodiment of the present application. To further improve the touch effect of the mobile phone when wearing the protective case 20, the sixth side wall 213 and the eighth side wall 215 may be provided with a second notch 217 that runs through the thickness direction of the protective case 20.

[0084] Exemplarily, in one embodiment, the length of the sixth side wall 213 and the eighth side wall 215 of the protective shell 20 is greater than the length of the fifth side wall 212 and the seventh side wall 214, and the sixth side wall 213 and the eighth side wall 215 may be provided with a second notch 217 that passes through the thickness direction of the protective shell 20, the length of the first side wall 113 and the third side wall 115 of the middle frame 110 is greater than the length of the second side wall 114 and the fourth side wall 116, and at least part of the metal frame 111 of the middle frame 110 corresponding to the first side wall 113 and the third side wall 115 is exposed outside the non-metallic layer 112. Then, similarly to the above, when the user holds the mobile phone wearing the protective case 20, especially when the user operates the mobile phone in a game scene, the user's hand can contact the first side wall 113 and the third side wall 115 exposed at the second notch 217, so that the user's hand can contact the metal frame 111 exposed at the second notch 217, so that even when the mobile phone is wearing the protective case 20, better grounding can be achieved in the game scene, which can increase the coupling capacitance between the user's hand and the touch screen 200, and reduce the screen shaking phenomenon when the touch screen 200 is operated with multiple fingers.

[0085] Please continue to refer to Fig.11 , Fig.11 The third structural schematic diagram of the protective shell provided in the embodiment of the present application. The protective shell 20 is provided with a first via hole 218 penetrating the thickness direction of the protective shell 20, so that the first via hole 218 is connected to the charging port, and the protective shell 20 includes a dust cover 221, which is movably disposed at the first via hole 218 to cover or expose the first via hole 218.

[0086] The dust cover 221 is movably disposed at the first through hole 218, that is, the dust cover 221 can move relative to the first through hole 218, so that the dust cover 221 can switch between the two states of covering and exposing the first through hole 218. It can be understood that the dust cover 221 is used to isolate the charging interface of the electronic device 10 from the external environment when covering the first through hole 218, to prevent dust, fine particles and water droplets in the external environment from entering the charging interface through the first through hole 218, and to prevent the normal use of the electronic device 10 from being affected. When the user needs to use the charging interface for charging, the dust cover 221 is switched from the state of covering the first through hole 218 to the state of exposing the first through hole 218, so that the charging interface is exposed, so that an external power source is connected to the charging interface to charge the electronic device 10.

[0087] The dust cover 221 may be an integral structure with the shell body 210 of the protective shell 20 , or the dust cover 221 may be a separate structure from the shell body 210 of the protective shell 20 .

[0088] For example, Fig.11As shown, the dust cover 221 and the shell body 210 of the protective shell 20 are an integral structure, and the dust cover 221 includes a cover body and a bending portion 222 connected to the cover body, and the bending portion 222 is connected to the edge of the first through hole 218, so that the cover body can be flipped around the bending portion 222 relative to the first through hole 218, and the dust cover 221 can be switched between the state of covering the first through hole 218 and exposing the first through hole 218. In this way, the cover body and the shell body 210 of the protective shell 20 are connected as an integral structure through the bending portion 222, which can facilitate the switching of the matching state of the dust cover 221 and prevent the dust cover 221 from being lost.

[0089] In order to further improve the touch effect of the mobile phone when wearing the protective case 20 , metal coatings 223 are provided on two opposite sides of the dust cover 221 .

[0090] Specifically, the dust cover 221 has a first surface and a second surface relative to each other. When the protective shell 20 is matched with the mobile phone, the first surface is the side of the dust cover 221 facing the middle frame 110, and the first surface can be in contact (partial contact) with the middle frame 110. The second surface is the side of the dust cover 221 away from the middle frame 110. When the user holds the mobile phone wearing the protective shell 20 and the dust cover 221 is in a state of covering the first through hole 218, the user's hand can be in contact with the second surface.

[0091] By providing a metal coating 223 on the first and second surfaces of the dust cover 221, when the user holds the mobile phone wearing the protective case 20 and the dust cover 221 is in a state of covering the first via 218, the metal coating 223 on the first surface contacts the middle frame 110, and the metal coating 223 on the first surface becomes part of the system ground of the mobile phone, and the metal coating 223 on the second surface can contact the user's fingers. In this way, the distance between the user's fingers and the system ground of the mobile phone is reduced, the coupling capacitance between the fingers and the touch screen 200 can be increased, and the screen shaking phenomenon during multi-finger operation of the touch screen 200 is reduced.

[0092] In other embodiments, a second metal sheet may be attached to two opposite sides of the dust cover 221 .

[0093] Please refer to Figures 9 to 11 The bottom wall 211 of the protective shell 20 is also provided with a second through hole 219 that penetrates the thickness direction of the bottom wall 211, so that the metal decorative part 500 of the mobile phone can be passed through the second through hole 219. The contour shape of the second through hole 219 corresponds to the contour shape of the metal decorative part 500.

[0094] In this way, when the protective case 20 is matched with the mobile phone, the metal decorative part 500 can be exposed through the second via hole 219, so that when the user holds the mobile phone wearing the protective case 20, the user's hand can contact the metal decorative part 500 and can also be grounded, which can increase the coupling capacitance between the user's hand and the touch screen 200 and reduce the screen shaking phenomenon when the touch screen 200 is operated with multiple fingers.

[0095] The above is a detailed introduction to the touch screen, electronic device, protective case and device set provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A touch screen, characterized in that: It comprises a plurality of touch control units, which are arranged in an array; each of the touch control units comprises an insulating layer and a driving electrode and a sensing electrode arranged on the insulating layer, and the driving electrode and the sensing electrode are insulated from each other; Wherein, along the thickness direction of the touch control unit, the orthographic projection area of ​​the driving electrode on the insulating layer is larger than the orthographic projection area of ​​the sensing electrode on the insulating layer.

2. The touch screen according to claim 1, characterized in that: Along the thickness direction of the touch control unit, a ratio of an orthographic projection area of ​​the driving electrode on the insulating layer to an orthographic projection area of ​​the sensing electrode on the insulating layer is between 1.5 and 3.

3. The touch screen according to claim 2, characterized in that: A dimension of each of the touch control units along at least one of the first direction and the second direction is between 3.5 mm and 4.0 mm, and the first direction and the second direction are perpendicular to a thickness direction of the touch control unit.

4. An electronic device, characterized in that: The electronic device comprises a housing and a touch screen as claimed in any one of claims 1 to 3, wherein the touch screen is connected to the housing.

5. The electronic device according to claim 4, characterized in that: The housing comprises a middle frame, and the touch screen is arranged in the middle frame; The middle frame includes a metal frame and a non-metal layer covering the metal frame, and at least a portion of the metal frame is exposed outside the non-metal layer.

6. The electronic device according to claim 5, characterized in that: The middle frame includes a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence, the first side wall and the third side wall are arranged opposite to each other, and the second side wall and the fourth side wall are arranged opposite to each other; At least a portion of the metal frame corresponding to the first side wall and the third side wall is exposed outside the non-metal layer; and / or, At least a portion of the metal frame corresponding to the second side wall and the fourth side wall is exposed outside the non-metal layer.

7. The electronic device according to claim 5, characterized in that: The housing further comprises a back cover, and the back cover is arranged on a side of the middle frame away from the touch screen; The electronic device further includes a first metal sheet, which is disposed on a side of the back cover facing the middle frame, and the first metal sheet is connected to a system ground of the electronic device.

8. The electronic device according to claim 7, characterized in that: The electronic device further comprises a camera module and a metal decorative piece covering the camera module; The rear cover is provided with a through hole for the metal decoration piece to pass through, so that the metal decoration piece is exposed at a side of the rear cover away from the middle frame.

9. The electronic device according to claim 5, characterized in that: The electronic device further comprises: A processor, the processor being used to control the electronic device to issue a prompt to reduce a chirality level when a game scene is detected, wherein the chirality level is positively correlated with a touch detection accuracy of the touch screen; Alternatively, the processor is used to control the electronic device to lower the chirality gear when a game scene is detected.

10. A protective case for use with an electronic device, the electronic device comprising a middle frame and a touch screen as claimed in any one of claims 1 to 3, the touch screen being connected to the middle frame; The protective shell includes a fifth side wall, a sixth side wall, a seventh side wall and an eighth side wall for engaging with the middle frame, the fifth side wall, the sixth side wall, the seventh side wall and the eighth side wall are connected in sequence, and the fifth side wall and the seventh side wall are arranged opposite to each other, and the sixth side wall and the eighth side wall are arranged opposite to each other; in, The fifth side wall and the seventh side wall are provided with a first notch penetrating through the thickness direction of the protective shell; and / or, The sixth side wall and the eighth side wall are provided with a second notch penetrating through the thickness direction of the protective shell.

11. The protective case according to claim 10, characterized in that: The middle frame is provided with a charging interface, and the charging interface is used to connect to an external power source to charge the electronic device; The protective shell is provided with a first via hole penetrating through the thickness direction of the protective shell so that the first via hole is connected to the charging port; the protective shell includes a dust cover, which is movably arranged at the first via hole to cover or expose the first via hole, and the opposite sides of the dust cover are provided with a metal coating.

12. A device set, characterized in that: The invention comprises an electronic device and a protective case as claimed in any one of claims 10 to 11.

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