Touch display screen and electronic equipment

Abstract

The invention discloses a touch display screen and electronic equipment, the touch display screen comprises a display module and a touch structure, and the display module is provided with a display area and a non-display area located outside the display area. The touch structure is arranged on one side of the display module in a stacked mode and comprises a touch electrode and a first touch lead, the touch electrode is located in the display area, the first touch lead comprises a first part and a second part, the first part is connected with the touch electrode and located in the non-display area, and the second part is connected with the first part and located in the display area. The second part is arranged on one side of the touch electrode in a stacked mode. According to the invention, the touch lead is partially arranged in the display area, so that the occupation of the touch lead to the space of the non-display area can be reduced, the design width of the frame of the electronic equipment can be reduced, a narrow frame can be realized, and the screen-to-body ratio of the electronic equipment can be improved.

Description

Technical Field

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

[0002] With the widespread popularity of full-screen design, the narrow frame design of display terminals or devices has become a major trend. In related technologies, display terminals have a display area and a non-display area, and the non-display area often requires a large number of wiring, occupying a large amount of space in the non-display area. The non-display area needs to leave enough width for wiring, which is not conducive to the extremely narrow frame and reduces the screen-to-body ratio of the display terminal or device. Summary of the invention

[0003] The present application provides a touch display screen and an electronic device, which can increase the screen-to-body ratio of the electronic device.

[0004] In a first aspect, the present application provides a touch display screen, comprising:

[0005] A display module having a display area and a non-display area outside the display area;

[0006] A touch structure is stacked on one side of the display module, the touch structure includes a touch electrode and a first touch lead connected to the touch electrode, the touch electrode is located in the display area, the first touch lead includes a first part and a second part, the first part is located in the non-display area, the second part is connected to the first part and is located in the display area, and the second part is stacked on one side of the touch electrode.

[0007] In a second aspect, the present application further provides a touch display screen, comprising:

[0008] A display module having a display area and a non-display area outside the display area;

[0009] A touch structure is stacked on one side of the display module, the touch structure includes a first touch side layer and a second touch layer which are stacked, the touch structure includes touch electrodes and touch leads connected to the touch electrodes, the touch electrodes are arranged on the first touch layer and located in the display area, the touch leads are located in the non-display area, wherein part of the touch leads are arranged on the first touch layer, and at least part of the remaining touch leads are arranged on the second touch layer.

[0010] In a second aspect, the present application further provides an electronic device, comprising a housing and the touch display screen as described above, wherein the touch display screen is arranged in the housing.

[0011] In the touch display screen provided by the present application, the first part of the first touch lead is arranged in the non-display area, and the second part is arranged in the display area, that is, the present application routes part of the touch lead originally arranged in the non-display area in the related art in the display area, which can reduce the occupation of the non-display area space by the touch lead, so that the design width of the frame of the electronic device can be reduced, a narrow frame can be achieved, and the screen-to-body ratio of the electronic device can be increased. Moreover, the present application also stacks the second part on one side of the touch electrode, that is, the part of the touch lead located in the display area is stacked on one side of the touch electrode, that is, the part of the touch lead located in the display area is in a different layer from the touch electrode, then the part of the touch lead located in the display area will not occupy the layout space of the touch electrode, there is no need to destroy the integrity of the touch electrode for the layout of the touch lead, and it will not affect the touch function of the display area. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The technical solution and beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0013] Figure 1 A first schematic diagram of an electronic device provided in an embodiment of the present application.

[0014] Figure 2 A second schematic diagram of an electronic device provided in an embodiment of the present application.

[0015] Figure 3 This is a schematic diagram of the state of the touch display screen provided in an embodiment of the present application when installed in an electronic device.

[0016] Figure 4 This is a first structural schematic diagram of a touch display screen according to an embodiment of the present application.

[0017] Figure 5 It is a structural schematic diagram of a touch display screen in the related art.

[0018] Figure 6 for Figure 4 Schematic diagram of the structure of the hidden touch electrodes in the touch display.

[0019] Figure 7 for Figure 4 A schematic diagram of a first cross section of the touch display along the thickness direction.

[0020] Figure 8 Schematic diagram of the structure of the first touch layer of the touch display screen of the embodiment of the present application.

[0021] Fig. 9 Schematic diagram of the structure of the second touch layer of the touch display screen of the embodiment of the present application.

[0022] Fig.10It is an overall top view of the touch structure of the touch display screen according to an embodiment of the present application.

[0023] Fig.11 It is a schematic structural diagram of a touch structure in which a first touch layer is virtualized according to an embodiment of the present application.

[0024] Fig.12 for Figure 4 A second cross-sectional diagram of the touch display along the thickness direction.

[0025] Fig.13 for Figure 4 A third cross-sectional diagram of the touch display along the thickness direction.

[0026] Fig.14 for Figure 4 A fourth cross-sectional diagram of the touch display along the thickness direction.

[0027] Fig.15 This is a second structural schematic diagram of the touch display screen according to an embodiment of the present application.

[0028] Fig.16 for Fig.15 A schematic diagram of a first cross section of the touch display along the thickness direction. DETAILED DESCRIPTION

[0029] The following will be combined with the attached examples of the present application Figure 1 To Attachment Fig.16 , 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.

[0030] 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.

[0031] The embodiments of the present application provide a touch display screen and an electronic device. The touch display screen provided in the embodiments of the present application can reduce the width of the non-display area. When the touch display screen is applied to an electronic device, the width of the border of the electronic device can be reduced, which is conducive to achieving a narrow border and improving the screen-to-body ratio of the electronic device.

[0032] As used herein, "electronic equipment" (or simply "terminal") includes, but is not limited to, a device configured to receive / send communication signals via a wireline 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", "wireless terminal" or "mobile terminal".

[0033] Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communication System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, 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 that is equipped with a cellular communications module.

[0034] Please refer to Figure 1 and Figure 2 , Figure 1 A 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 is as follows: The electronic device 10 includes components such as a housing 100 , a touch screen 200 , and a mainboard 300 .

[0035] 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 may include a liquid crystal touch screen (LCD) or an organic light-emitting diode touch screen (OLED).

[0036] 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 battery, the mainboard 300, and the sensor of the electronic device 10 can be arranged inside the housing 100. It can be understood that the housing 100 can include a middle frame 110 and a back cover 120.

[0037] 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. For example, the middle frame 110 may be provided with grooves, protrusions and other structures to facilitate the installation of the electronic devices or functional components of the electronic device 10. It is understandable that the material of the middle frame 110 may include metal or plastic.

[0038] The back cover 120 is used to seal the electronic devices and functional components of the electronic device 10 together with the middle frame 110 and the touch screen 200 inside the electronic device 10 to protect the electronic devices and functional components of the electronic device 10. It can be understood that the material of the back cover 120 can also include metal or plastic.

[0039] The mainboard 300 is disposed inside the housing 100. For example, the mainboard 300 can be mounted on the middle frame 110 of the housing 100 for fixing, and the mainboard 300 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 300. At the same time, the touch display screen 200 can be electrically connected to the mainboard 300 to control the display and touch operation of the touch display screen 200 through the processor on the mainboard 300.

[0040] Please refer to Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the state of the touch display screen provided in the embodiment of the present application when it is installed in an electronic device. Figure 4 The first structural diagram of the touch display screen of the embodiment of the present application is shown in FIG. 2 . The touch display screen 200 includes a display module 210 and a touch structure 220 . The touch structure 220 is stacked on one side of the display module 210 .

[0041] The display module 210 has a display area 211 (AA area) and a non-display area 212 (NA area) outside the display area 211. The display area 211 is the image display area of ​​the touch display screen 200, and the non-display area 212 does not display. The non-display area 212 can be used to set the scanning drive circuit, circuit wiring, etc. It should be pointed out that the non-display area 212 is located outside the display area 211, which means that in the plane where the display area 211 is located, the non-display area 212 is set on at least one side of the display area 211. In some embodiments, in order to prevent light leakage of the electronic device 10, the non-display area 212 is set around the display area 211.

[0042] The display module 210 has a light-emitting side and a backlight side opposite to each other. It can be understood that the light-emitting side is the side of the display module 210 used for displaying images, that is, the side of the display module 210 facing the outside of the electronic device 10; the backlight side is the other side of the display module 210 opposite to the light-emitting side, that is, the side of the display module 210 facing the inside of the electronic device 10. In some embodiments, the touch structure 220 is stacked on the light-emitting side of the display module 210.

[0043] In some other embodiments, the touch structure 220 may also be disposed on the backlight side of the display module 210 .

[0044] The touch control structure 220 is used to realize the touch control function, and the touch control structure 220 includes a touch control electrode 221 and a touch control lead connected to the touch control electrode 221. The touch control electrode 221 includes a driving electrode 2211 and a sensing electrode 2212 that are insulated from each other. The driving electrode 2211 and the sensing electrode 2212 extend in two different directions, and there are mutually intersecting portions between the driving electrode 2211 and the sensing electrode 2212. In order to realize mutual insulation between the driving electrode 2211 and the sensing electrode 2212, the mutually intersecting and overlapping portions of the driving electrode 2211 and the sensing electrode 2212 can be set to different layers.

[0045] For example, in one embodiment, the touch structure 220 includes a first touch layer and a second touch layer. The first touch layer is provided with a touch electrode 221, such as Figure 4 As shown, the touch electrode 221 includes a plurality of mutually insulated driving electrodes 2211 and a plurality of sensing electrodes 2212, the plurality of driving electrodes 2211 extend along a first direction and are arranged along a second direction, the plurality of sensing electrodes 2212 extend along a second direction and are arranged along the first direction, the first direction is perpendicular to the second direction, each driving electrode 2211 includes a plurality of sub-driving electrodes connected in series in sequence, each driving electrode 2211 is an integral structure, and each sensing electrode 2212 includes a plurality of sub-sensing electrodes spaced in sequence. The second touch layer 220b is stacked on one side of the first touch layer, and the second touch layer includes a plurality of bridge keys 2213, each bridge key 2213 bridges two adjacent sub-sensing electrodes.

[0046] The driving electrodes 2211 and the sensing electrodes 2212 may be metal mesh structures. The driving electrodes 2211 and the sensing electrodes 2212 may have various patterns, such as a cross-shaped pattern, a diamond-shaped pattern, or a comb-shaped pattern. The specific shapes of the driving electrodes 2211 and the sensing electrodes 2212 are not limited here.

[0047] The touch lead is used to connect the touch electrode 221 to the touch driving structure. The touch display screen 200 includes a touch driving structure (such as a touch chip). The touch driving structure provides a touch driving signal to the driving electrode 2211 through the touch lead, and receives the sensing signal returned by the sensing electrode 2212 through the touch lead.

[0048] Specifically, the driving electrode 2211 and the sensing electrode 2212 may form a capacitive node, and the pulse or alternating voltage applied to the driving electrode 2211 by the touch driving structure may induce a charge on the sensing electrode 2212, and the amount of the induced charge may be susceptible to external influences (such as the touch or approach of a finger). In other words, when a finger touches or approaches a capacitive node, a capacitance change may occur at the capacitive node, and the touch driving structure may measure the capacitance change through the sensing electrode 2212, and determine the position where the finger touches or approaches based on the capacitance change measured in the entire touch structure 220.

[0049] It can be understood that the touch electrode 221 is located in the display area 211 , and the touch electrode 221 can cover the entire display area 211 , so that the touch display screen 200 can implement touch operation in the entire area of ​​the display area 211 .

[0050] Since the touch electrodes 221 are disposed in the display area 211, in order to facilitate the wiring of the touch leads, in the related art, the touch leads are disposed in the non-display area. Figure 5 , Figure 5 The structure diagram of the touch display screen in the related art. After being led out through multiple touch electrodes located at the left edge or right edge of the display area, multiple touch leads are extended to the bottom frame in the non-display area of ​​the left and right frames of the electronic device, and are bent in the non-display area of ​​the bottom frame and extended to the binding area for binding, resulting in a large number of touch leads being concentrated on the bottom frame of the electronic device, resulting in the need to design a wider width for the bottom frame of the electronic device, which is not conducive to narrowing the bottom frame of the electronic device and reducing the screen-to-body ratio of the electronic device.

[0051] To solve the above problems, please refer to the embodiments of this application. Figure 6 , Figure 6 for Figure 4 A schematic diagram of a structure in which a touch electrode is hidden in a touch display screen. The touch lead includes a first touch lead 222, and the first touch lead 222 includes a first portion 2221 and a second portion 2222. The first portion 2221 is located in the non-display area 212, and the second portion 2222 is connected to the first portion 2221 and located in the display area 211, and the second portion 2222 is stacked on one side of the touch electrode 221.

[0052] Then, in the touch display screen 200 provided in the embodiment of the present application, the first part 2221 of the first touch lead 222 is arranged in the non-display area 212, and the second part 2222 is arranged in the display area 211. That is, the present application wires part of the touch leads originally arranged in the non-display area 212 in the related art in the display area 211, which can reduce the space occupied by the touch leads in the non-display area 212, so that the design width of the frame of the electronic device 10 can be reduced, a narrow frame can be achieved, and the screen-to-body ratio of the electronic device 10 is increased. Moreover, the present application also stacks the second part 2222 on one side of the touch electrode 221, that is, the part of the touch lead located in the display area 211 is stacked on one side of the touch electrode 221, that is, the part of the touch lead located in the display area 211 and the touch electrode 221 are in a different layer, then the part of the touch lead located in the display area 211 will not occupy the layout space of the touch electrode 221, there is no need to destroy the integrity of the touch electrode 221 for arranging the touch lead (the pattern of the touch electrode 221 is still a complete pattern), and will not affect the touch function of the display area 211.

[0053] It should be noted that there is no need to destroy the integrity of the touch electrode 221 in relation to setting the second portion 2222 and the touch electrode 221 on the same layer. If the second portion 2222 and the touch electrode 221 are located on the same layer, since there will be signal interference between the touch electrode 221 and the touch lead, it is necessary to remove part of the touch electrode 221 or remove part of the structure of the touch electrode 221 to reserve space in the display area 211 for the touch lead wiring, which destroys the integrity of the touch electrode 221, making the touch pattern an incomplete pattern, resulting in a partial area of ​​the touch display screen 200 being unable to recognize the touch signal, affecting the normal touch function of the display area 211.

[0054] It can be understood that in some embodiments, the touch display screen 200 can also retain a small number of touch leads arranged in a traditional way, and the touch leads can include a fifth touch lead 226 connected to the touch electrode 221, and the fifth touch lead 226 is all located in the non-display area 212, and the fifth touch lead 226 and the touch electrode 221 are located in the same layer.

[0055] Since the second part 2222 of the first touch lead 222 is arranged in the display area 211 in the present application, the number of the fifth touch leads 226 can be reduced, and the space occupied by the fifth touch leads 226 in the non-display area 212 is reduced, which can reduce the design width of the frame of the electronic device 10 and improve the screen-to-body ratio of the electronic device 10.

[0056] Please refer to Figure 3 , Figure 6 and Figure 7 , Figure 7 for Figure 4The non-display area 212 includes a transition area 2121 and a bending area 2122 , wherein the transition area 2121 is disposed between the bending area 2122 and the display area 211 , and the second portion 2222 is located in the display area 211 near the bending area 2122 .

[0057] It can be understood that the bending area 2122 is the part of the touch display screen 200 that can be flexibly bent. When the touch display screen 200 is installed on the electronic device 10, the bending area 2122 is folded, so that part of the non-display area 212 can be folded to the back of the touch display screen 200, that is, at least part of the non-display area 212 is opposite to the display area 211, which can reduce the area of ​​the non-display area 212 on the front of the touch display screen 200 and reduce the width of the bottom frame of the electronic device 10.

[0058] It should be noted that the second portion 2222 is located in the display area 211 near the bending area 2122 , and may be a region extending 1 to 3 mm from the adjacent edge of the display area 211 and the non-display area 212 in a direction away from the non-bending area 2122 .

[0059] Then, the second part 2222 is located in the area of ​​the display area 211 close to the bending area 2122, that is, the second part 2222 is located in the area of ​​the display area 211 close to the lower frame of the electronic device 10, so that part of the touch leads originally set in the lower frame are set in the display area 211, and the touch leads in the lower frame are reduced, which can reduce the design width of the lower frame, realize a narrow frame, and increase the screen-to-body ratio of the electronic device 10.

[0060] Optionally, the second portion 2222 is disposed on the second touch layer 220 b and is insulated from the bridge key 2213 .

[0061] For example, please refer to Figure 7 and Figure 8 , Figure 8 Schematic diagram of the structure of the first touch layer of the touch display screen of the present application embodiment. The first touch layer 220a includes mutually intersecting driving electrodes 2211 and sensing electrodes 2212, and an insulating barrier (not shown) is filled between the driving electrodes 2211 and the sensing electrodes 2212, so that the driving electrodes 2211 and the sensing electrodes 2212 can be insulated and isolated. Figure 8 As shown, in one touch control unit, the driving electrode 2211 extends along a first direction, the sensing electrode 2212 extends along a second direction, and the sensing electrode 2212 includes two sub-sensing electrodes 2212a spaced from each other.

[0062] Combined with reference Figure 7 , Fig. 9 and Fig.10 , Fig. 9is a schematic diagram of the structure of the second touch layer of the touch display screen according to an embodiment of the present application, Fig.10 The overall top view of the touch structure of the touch display screen of the embodiment of the present application. The second touch layer 220b includes an insulating layer 227 and a bridge key 2213. The insulating layer 227 is stacked with the first touch layer 220a and covers the bridge key 2213. The insulating layer 227 is provided with a second via hole 227b so that the ends of two adjacent sub-sensing electrodes 2212a close to each other are exposed. The bridge key 2213 is provided on the insulating layer 227 and its two ends protrude into the second via hole 227b, thereby connecting the two adjacent sub-sensing electrodes 2212a.

[0063] like Figure 7 and Fig. 9 As shown, the second portion 2222 may be disposed on one side of the bridging key 2213 , and the second portion 2222 may be insulated and isolated from the bridging key 2213 by an insulating layer 227 .

[0064] Then, by setting the second part 2222 on the second touch layer 220b, the second part 2222 of the first touch lead 222 can be directly wired using the original second touch layer 220b without adding another touch layer, thereby avoiding increasing the overall thickness of the touch display screen 200 and saving the material cost and processing cost caused by adding another touch layer. Moreover, the second touch layer 220b was originally only provided with a bridge key 2213, and the bridge key 2213 only occupies a small space of the second touch layer 220b. By setting the second part 2222 on the second touch layer 220b, the second touch layer 220b has enough space for the touch lead wiring, which is convenient for processing and production, and will not affect the yield rate of the touch panel.

[0065] It can be understood that the second portion 2222 is insulated from the bridge key 2213 by the insulating layer 227 to prevent the second portion 2222 from being electrically connected to the bridge key 2213 to ensure the normal operation of the touch circuit.

[0066] Optional, please refer to the figure Figure 3 and 11 , Fig.11 The touch display screen 200 includes a display surface 210a, and the orthographic projection of the second portion 2222 on the display surface 210a is located within the orthographic projection range of the touch electrode 221 on the display surface 210a.

[0067] It can be understood that the display surface 210 a is the surface where the light emitting side of the display module 210 of the touch display screen 200 is located.

[0068] Among them, the orthographic projection of the second part 2222 on the display surface 210a is located within the orthographic projection range of the touch electrode 221 on the display surface 210a, that is, the orthographic projection of the touch electrode 221 on the display surface 210a covers the orthographic projection of the second part 2222 on the display surface 210a, that is, the second part 2222 is arranged to overlap with the touch electrode 221, and the area of ​​the second part 2222 is less than or equal to the area of ​​the touch electrode 221.

[0069] In this way, by overlapping the second part 2222 with the touch electrode 221, and the area of ​​the second part 2222 is less than or equal to the area of ​​the touch electrode 221, the touch electrode 221 will completely block the second part 2222, and when the user's finger touches or approaches the touch display screen 200, it can generate an inductive capacitance with the touch electrode 221, and will not generate an inductive capacitance with the first touch lead 222, which can avoid interference with the touch signal. Moreover, since the touch electrode 221 will block the second part 2222, the touch lead will not be seen from the front of the touch display screen 200, and the second part 2222 can be set on the same wiring line as the touch electrode 221, and will not block the pixels of the display module 210, and will not affect the display effect of the touch display screen 200.

[0070] Specifically, the second portion 2222 may be configured to have a pattern substantially the same as that of the touch electrode 221. It should be noted that the term "substantially the same" here means that the second portion 2222 needs to be configured to bypass the bridge key 2213 at a position close to the bridge key 2213 so that the bridge key 2213 is insulated and isolated from the second portion 2222, that is, the pattern of the portion of the second portion 2222 close to the bridge key 2213 is different from the pattern of the touch electrode 221, while the pattern of the second portion 2222 at other positions may be the same as that of the touch electrode 221.

[0071] Optionally, the first portion 2221 may be disposed on the second touch layer 220b. That is, the first portion 2221 and the second portion 2222 of the first touch lead 222 are located in the same layer, so the first portion 2221 and the second portion 2222 may be formed simultaneously on the second touch layer 220b. For example, the first portion 2221 and the second portion 2222 may be formed simultaneously on the same layer through a deposition process, which may simplify the touch layer structure and improve production efficiency. The first portion 2221 and the second portion 2222 are deposited as one, which may ensure the connection stability between the first portion 2221 and the second portion 2222.

[0072] Optionally, in another implementation, the first portion 2221 may also be disposed on the first touch layer 220a. Then, the first portion 2221 and the second portion 2222 of the first touch lead 222 are located in different layers. For example, please refer to Fig.12 , Fig.12 for Figure 4 A second cross-sectional schematic diagram of the touch display screen in the thickness direction. The first portion 2221 is disposed on the first touch layer 220a, the second touch layer 220b includes an insulating layer 227, and the insulating layer 227 is provided with a first via 227a, so that the end of the first portion 2221 is exposed to the first via 227a, and the second portion 2222 includes a main body 222a and a connecting portion 222b connected to the main body 222a, and the connecting portion 222b is disposed in the first via 227a and connected to the first portion 2221. (It should be noted that in order to connect the first portion 2221 with the second portion 2222, the end of the second portion 2222 can extend into the non-display area 212, and the connecting portion 222b can be disposed at the end of the second portion 2222, that is, the connecting portion 222b can be located in the non-display area 212; alternatively, the end of the first portion 2221 can extend into the display area 211, and the drawings of this application take the former as an example.)

[0073] Please refer to Figure 6 The non-display area 212 also includes a binding area 2123, which is connected to a side of the bending area 2122 away from the display area 211. The binding area 2123 is provided with a pad for electrically connecting the touch display screen 200 to the mainboard 300 of the electronic device 10.

[0074] To extend the first touch lead 222 to the binding area 2123 to bind with the pad, the first touch lead 222 further includes a third portion 2223 , which is connected to the second portion 2222 and extends from the transition area 2121 to the binding area 2123 .

[0075] Among them, the third part 2223 can be arranged on the first touch layer 220a. In order to connect the third part 2223 with the second part 2222, the insulating layer 227 of the second touch layer 220b can be provided with a third via hole, so that the end of the second part 2222 is exposed to the third via hole, and the end of the third part 2223 is protruded in the third via hole, thereby connecting the third part 2223 with the second part 2222.

[0076] Optional, please refer to Figure 6 and Fig.13 , Fig.13 for Figure 4 A third cross-sectional view of the touch display screen along the thickness direction. The touch lead also includes a second touch lead 223, the second touch lead 223 includes a fourth portion 2231 and a fifth portion 2232, the fourth portion 2231 is connected to the touch electrode 221 and is located in the display area 211, the fifth portion 2232 is connected to the fourth portion 2231 and is located in the non-display area 212, and the fourth portion 2231 is disposed on the second touch layer 220b.

[0077] The second touch lead 223 may be a touch lead connected to the driving electrode 2211, or may be a touch lead connected to the sensing electrode 2212. Then, the fourth portion 2231 may extend along the first direction, or may extend along the second direction, or may include two bent portions, one of which extends along the first direction, and the other extends along the second direction.

[0078] Specifically, the fourth portion 2231 is located in the display area 211 and is connected to the touch electrode 221, and the fourth portion 2231 is disposed on the second touch layer 220b. Then, the second touch layer 220b may be provided with a fourth via hole 227c that penetrates the second touch layer 220b, so that a portion of the touch electrode 221 is exposed to the fourth via hole 227c, thereby enabling the fourth portion 2231 to be connected to the touch electrode 221 through the fourth via hole 227c.

[0079] Optional, please continue to refer to Figure 6 The touch leads further include a third touch lead 224 . The third touch lead 224 is located in the non-display area 212 , and at least a portion of the third touch lead 224 is disposed in the second touch layer 220 b .

[0080] Among them, at least part of the third touch lead 224 is arranged on the second touch layer 220b, and part of the third touch lead 224 can be arranged on the second touch layer 220b, and the other part is arranged on the first touch layer 220a; or the entire third touch lead 224 is arranged on the second touch layer 220b, which is not limited in the embodiment of the present application.

[0081] For example, please refer to Fig.14 , Fig.14 for Figure 4A fourth cross-sectional view of the touch display screen along the thickness direction. In one embodiment, the third touch lead 224 includes a sixth portion 2241 and a seventh portion 2242, wherein the sixth portion 2241 is connected to the sensing electrode 2212 and extends along the first direction to the transition region 2121, and the seventh portion 2242 is bent and connected to the sixth portion 2241 and extends along the second direction, and the seventh portion 2242 is located in the transition region 2121. The sixth portion 2241 is disposed on the first touch layer 220a, and the seventh portion 2242 is disposed on the second touch layer 220b, that is, the portion of the third touch lead 224 corresponding to the lower frame of the electronic device 10 is disposed on the second touch layer 220b. By setting the seventh part 2242 on the second touch layer 220b, space is reserved in the area of ​​the first touch layer 220a corresponding to the seventh part 2242, that is, wiring space is reserved in the upper layer of the seventh part 2242, which can be used to arrange other touch leads. For example, the upper layer of the seventh part 2242 can be used to arrange the above-mentioned fifth touch lead 226, so that the part of the fifth touch lead 226 located in the transition area 2121 is overlapped with the seventh part 2242 of the third touch lead 224. In other words, two touch layers can be used to make touch leads, which can reduce the space occupied by the touch leads in the non-display area 212 (transition area 2121) and the width of the transition area 2121, thereby further reducing the design width of the lower frame of the electronic device 10 and improving the screen-to-body ratio of the electronic device 10.

[0082] In order to reduce the non-display area 212 of the touch display screen 200, the present application also provides a touch display screen 200. Figure 3 , Fig.15 and Fig.16 , Fig.15 is a second structural schematic diagram of the touch display screen according to an embodiment of the present application, Fig.16 for Fig.15 A first cross-sectional view of the touch display screen along the thickness direction. The touch display screen 200 includes a display module 210 and a touch structure 220 , and the touch structure 220 is stacked on one side of the display module 210 .

[0083] The display module 210 has a display area 211 (AA area) and a non-display area 212 (NA area) outside the display area 211. The display area 211 is the image display area 211 domain of the touch display screen 200, and the non-display area 212 does not display. The non-display area 212 can be used to set the scanning drive circuit, circuit routing, etc. It should be pointed out that the non-display area 212 is located outside the display area 211, which means that in the plane where the display area 211 is located, the non-display area 212 is set on at least one side of the display area 211. In some embodiments, in order to prevent light leakage of the electronic device 10, the non-display area 212 is set around the display area 211.

[0084] The non-display area 212 includes a transition area 2121 and a bending area 2122 , and the transition area 2121 is disposed between the bending area 2122 and the display area 211 .

[0085] The display module 210 has a light-emitting side and a backlight side opposite to each other. It can be understood that the light-emitting side is the side of the display module 210 used for displaying images, that is, the side of the display module 210 facing the outside of the electronic device 10; the backlight side is the other side of the display module 210 opposite to the light-emitting side, that is, the side of the display module 210 facing the inside of the electronic device 10. In some embodiments, the touch structure 220 is stacked on the light-emitting side of the display module 210.

[0086] In some other embodiments, the touch structure 220 may also be disposed on the backlight side of the display module 210 .

[0087] The touch control structure 220 is used to realize a touch control function. The touch control structure 220 includes a touch control electrode 221 and a touch control lead connected to the touch control electrode 221 .

[0088] The touch electrode 221 includes a driving electrode 2211 and a sensing electrode 2212 that are insulated from each other. In some embodiments, the driving electrode 2211 extends along a first direction, the sensing electrode 2212 extends along a second direction, and the first direction and the second direction are perpendicular to each other. In other embodiments, the sensing electrode 2212 extends along a first direction, the driving electrode 2211 extends along a second direction, and the first direction and the second direction are perpendicular to each other. If the driving electrode 2211 and the sensing electrode 2212 extend in two different directions, there is a mutually intersecting portion between the driving electrode 2211 and the sensing electrode 2212. In order to achieve mutual insulation between the driving electrode 2211 and the sensing electrode 2212, the mutually intersecting and overlapping portions of the driving electrode 2211 and the sensing electrode 2212 can be set to different layers.

[0089] The driving electrodes 2211 and the sensing electrodes 2212 may be metal mesh structures. The driving electrodes 2211 and the sensing electrodes 2212 may have various patterns, such as a cross-shaped pattern, a diamond-shaped pattern, or a comb-shaped pattern. The specific shapes of the driving electrodes 2211 and the sensing electrodes 2212 are not limited here.

[0090] The touch lead is used to connect the touch electrode 221 to the touch driving structure. The touch display screen 200 includes a touch driving structure (such as a touch chip). The touch driving structure provides a touch driving signal to the driving electrode 2211 through the touch lead, and receives the sensing signal returned by the sensing electrode 2212 through the touch lead.

[0091] Specifically, the driving electrode 2211 and the sensing electrode 2212 may form a capacitive node, and the pulse or alternating voltage applied to the driving electrode 2211 by the touch driving structure may induce a charge on the sensing electrode 2212, and the amount of the induced charge may be susceptible to external influences (such as the touch or approach of a finger). In other words, when a finger touches or approaches a capacitive node, a capacitance change may occur at the capacitive node, and the touch driving structure may measure the capacitance change through the sensing electrode 2212, and determine the position where the finger touches or approaches based on the capacitance change measured in the entire touch structure 220.

[0092] It can be understood that the touch electrode 221 is located in the display area 211 , and the touch electrode 221 can cover the entire display area 211 , so that the touch display screen 200 can implement touch operation in the entire area of ​​the display area 211 .

[0093] In this embodiment, the touch wires are located in the non-display area 212 , wherein some of the touch wires are disposed on the first touch layer 220 a , and at least some of the other touch wires are disposed on the second touch layer 220 b .

[0094] Among them, at least part of the other part of the touch wires is set on the second touch layer 220b, which can be part of the touch wires set on the second touch layer 220b and the other part set on the first touch layer 220a; or the touch wires are completely set on the second touch layer 220b.

[0095] Then, by setting some touch leads on the first touch layer 220a and at least part of the other touch leads on the second touch layer 220b, that is, the present embodiment uses two touch layers for laying out the touch leads, then the touch leads occupy the space corresponding to the two touch layers, rather than being concentrated in one touch layer, then the number of touch leads laid out in each touch layer can be reduced, thereby reducing the space occupied by the touch leads in the non-display area 212, reducing the design width of the frame of the electronic device 10, and improving the screen-to-body ratio of the electronic device 10.

[0096] Exemplarily, the touch wires may include a fourth touch wire 225 and a fifth touch wire 226. The fifth touch wire 226 is located in the non-display area 212 and is disposed in the first touch layer 220a, that is, the fifth touch wire 226 and the touch electrode 221 are located in the same layer.

[0097] At least part of the fourth touch lead 225 is disposed on the second touch layer 220b, and the part of the fourth touch lead 225 disposed on the second touch layer 220b is located in the transition region 2121. Specifically, the fourth touch lead 225 may include an eighth portion 2251 and a ninth portion 2252, wherein the eighth portion 2251 is connected to the sensing electrode 2212 and extends along the first direction to the transition region 2121, and the ninth portion 2252 is bent and connected to the eighth portion 2251 and extends along the second direction, and the ninth portion 2252 is located in the transition region 2121. The eighth portion 2251 is disposed on the first touch layer 220a, and the ninth portion 2252 is disposed on the second touch layer 220b.

[0098] It can be understood that the ninth part 2252 is arranged on the second touch layer 220b, so there is space reserved in the area of ​​the first touch layer 220a corresponding to the ninth part 2252, and there is wiring space reserved in the upper layer of the ninth part 2252, which can be used to arrange other touch leads. For example, the fifth touch lead 226 can be arranged in the upper layer of the ninth part 2252, so that the part of the fifth touch lead 226 located in the transition zone 2121 overlaps with the ninth part 2252 of the fourth touch lead 225. In other words, two touch layers can be used to make touch leads, which can reduce the space occupied by the touch leads in the non-display area 212 (transition zone 2121) and the width of the transition zone 2121, thereby reducing the design width of the lower frame of the electronic device 10 and improving the screen-to-body ratio of the electronic device 10.

[0099] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0100] The touch display screen and electronic device provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A touch display screen, characterized in that: include: A display module having a display area and a non-display area outside the display area; A touch structure is stacked on one side of the display module, the touch structure includes a touch electrode and a first touch lead, the touch electrode is located in the display area, the first touch lead includes a first part and a second part, the first part is connected to the touch electrode and is located in the non-display area, the second part is connected to the first part and is located in the display area, and the second part is stacked on one side of the touch electrode.

2. The touch display screen according to claim 1, characterized in that: The non-display area includes a transition area and a bending area, the transition area is arranged between the bending area and the display area, and the second part is located in a region of the display area close to the bending area.

3. The touch display screen according to claim 2, characterized in that: The touch control structure comprises: A first touch layer, provided with the touch electrodes, wherein the touch electrodes include drive electrodes and sensing electrodes insulated from each other; A second touch layer, stacked on one side of the first touch layer, the second touch layer comprising a bridge key, the bridge key being bridged to the driving electrode or the sensing electrode; The second portion is disposed on the second touch layer and is insulated from the bridge key.

4. The touch display screen according to any one of claims 1 to 3, characterized in that: The touch display screen includes a display surface, and an orthographic projection of the second part on the display surface is located within the orthographic projection range of the touch electrode on the display surface.

5. The touch display screen according to any one of claims 1 to 3, characterized in that: The first portion is disposed on the first touch layer or the second touch layer.

6. The touch display screen according to any one of claims 1 to 3, characterized in that: The first portion is disposed on the first touch layer; The second touch layer includes an insulating layer, the insulating layer is provided with a first via hole so that the end of the first part is exposed to the first via hole, and the second part includes a main body and a connecting part connected to the main body, and the connecting part is arranged in the first via hole and connected to the first part.

7. The touch display screen according to claim 2 or 3, characterized in that: The non-display area further includes a binding area, and the binding area is connected to a side of the bending area away from the display area; The first touch lead further includes a third portion, the third portion is connected to the second portion, and the third portion extends from the transition area to the binding area.

8. The touch display screen according to claim 1, characterized in that: The touch control structure comprises a first touch control layer and a second touch control layer which are stacked, and the first touch control layer is provided with the touch control electrode; The touch structure also includes a second touch lead, which includes a fourth part and a fifth part. The fourth part is connected to the touch electrode and is located in the display area, the fifth part is connected to the fourth part and is located in the non-display area, and the fourth part is arranged in the second touch layer.

9. The touch display screen according to claim 1, characterized in that: The touch control structure comprises a first touch control layer and a second touch control layer which are stacked, and the first touch control layer is provided with the touch control electrode; The touch structure further includes a third touch lead, the third touch lead is located in the non-display area, and at least a portion of the third touch lead is disposed in the second touch layer.

10. A touch display screen, characterized in that: include: A display module having a display area and a non-display area outside the display area; A touch structure is stacked on one side of the display module, the touch structure includes a first touch side layer and a second touch layer which are stacked, the touch structure includes touch electrodes and touch leads connected to the touch electrodes, the touch electrodes are arranged on the first touch layer and located in the display area, the touch leads are located in the non-display area, wherein some of the touch leads are arranged on the first touch layer, and at least some of the other touch leads are arranged on the second touch layer.

11. The touch display screen according to claim 10, characterized in that: The non-display area includes a transition area and a bending area, and the transition area is arranged between the bending area and the display area; The touch structure includes a fourth touch lead. At least a portion of the fourth touch lead is disposed on the second touch layer. The portion of the fourth touch lead disposed on the second touch layer is located in the transition region.

12. An electronic device, characterized in that: The electronic device comprises a housing and a touch display screen according to any one of claims 1 to 11, wherein the touch display screen is arranged in the housing.

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