Touch display device, electronic device and control method

Abstract

The application discloses a touch display device, an electronic device and a control method, and belongs to the technical field of electronic products. The touch display device comprises a flexible display panel and a touch layer arranged on the flexible display panel; the touch layer comprises a plurality of touch units; each touch unit in a first touch area comprises a plurality of first touch electrodes connected in sequence along a first direction; a switch unit is connected between the plurality of first touch electrodes; the first touch area is at least part of a touch area in the touch layer; the touch display device further comprises a control circuit connected to the switch unit of at least one touch unit in the first touch area; in the case that the flexible display panel is in an unfolded state, the control circuit is used for sending a first control signal to each switch unit to control the switch unit to be in a conductive state; in the case that the flexible display panel is in a folded state, the control circuit is used for sending a second control signal to at least part of the switch units to control the switch units to be in a disconnected state.

Description

Technical Field

[0001] This application belongs to the field of electronic product technology, specifically relating to a touch display device, electronic device and control method. Background Technology

[0002] Foldable electronic devices have two states: closed and unfolded. Therefore, the antenna of these devices also corresponds to two different electromagnetic environments when the screen is closed and unfolded. Because foldable screens use a single flexible display, such as... Figure 1 As shown, when the screen is closed, the first non-bending area 11, the second non-bending area 12, and the bending area 13 bend within the inner screen to form a U-shaped metal resonant cavity that is closed on one side and open on three sides. According to the principle of resonant cavities, this U-shaped cavity has certain resonant modes and will generate resonant modes in specific frequency bands, absorbing energy and thus affecting the antenna radiation characteristics.

[0003] Therefore, in the prior art, the resonant mode in the U-shaped cavity affects the antenna performance when the screen is closed. Summary of the Invention

[0004] The purpose of this application is to provide a touch display device, electronic device, and control method that can solve the problem in the prior art that the resonant mode in the U-shaped cavity affects the antenna performance when the screen is closed.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a touch display device, comprising: a flexible display panel and a touch layer disposed on the flexible display panel; the touch layer includes multiple touch units;

[0007] Each of the touch units in the first touch area includes a plurality of first touch electrodes connected sequentially along a first direction; a switching unit is connected between the plurality of first touch electrodes; the first touch area is at least a portion of the touch area in the touch layer; the touch display device further includes: a control circuit, the control circuit being connected to the switching unit of at least one of the touch units in the first touch area;

[0008] When the flexible display panel is in the unfolded state, the control circuit is used to send a first control signal to each of the switch units in the first touch area, and the first control signal is used to control the switch unit to be in the on state;

[0009] When the flexible display panel is in a folded state, the control circuit is used to send a second control signal to at least a portion of the switching units in the first touch area, the second control signal being used to control the switching units to be in an open state.

[0010] Secondly, embodiments of this application provide an electronic device, including the touch display device as described in the first aspect.

[0011] Thirdly, embodiments of this application provide a control method applied to the electronic device as described in the second aspect, the method comprising:

[0012] When the flexible display panel is in the unfolded state, the control circuit sends a first control signal to each switch unit in the first touch area. The first control signal is used to control the switch unit to be in the on state.

[0013] When the flexible display panel is in a folded state, the control circuit sends a second control signal to at least a portion of the switching units in the first touch area, the second control signal being used to control the switching units to be in an open state.

[0014] In this embodiment, the touch display device includes: a control circuit, a flexible display panel, and a touch layer disposed on the flexible display panel; the touch layer includes multiple touch units. At least a portion of the touch area in the touch layer is a first touch area, and each touch unit in the first touch area includes multiple first touch electrodes connected sequentially along a first direction; the multiple first touch electrodes are connected to a switching unit; the control circuit is connected to the switching unit of at least one touch unit in the first touch area; when the flexible display panel is in an unfolded state, the control circuit is used to send a first control signal to each of the switching units in the first touch area, the first control signal being used to control the switching unit to be in an on state; when the flexible display panel is in a folded state, the control circuit is used to send a second control signal to at least a portion of the switching units in the first touch area, the second control signal being used to control the switching unit to be in an off state. Thus, this embodiment can control the on / off state of the switching units of the touch units through the control circuit, thereby controlling the on / off state of multiple touch units in the first touch area. When the flexible display panel is in the unfolded state, all touch units in the first touch area are turned on, without affecting the normal screen touch experience and display effect. When the flexible display panel is in the folded state, by disconnecting at least some touch units in the first touch area, the structure of the U-shaped cavity can be disrupted, achieving the effect of adjusting the resonant mode of the resonant cavity, shifting the resonant frequency, and removing the resonant mode outside the operating frequency band. Therefore, this embodiment can regulate the noise within the U-shaped cavity without affecting the normal screen touch experience and display effect. Attached Figure Description

[0015] Figure 1 A schematic diagram illustrating the folded state of the flexible display panel according to an embodiment of the present invention;

[0016] Figure 2 One of the schematic diagrams showing the structure of the touch layer in an embodiment of the present invention;

[0017] Figure 3 A second schematic diagram illustrating the structure of the touch layer according to an embodiment of the present invention;

[0018] Figure 4 This diagram illustrates the connection between the first touch electrodes according to an embodiment of the present invention.

[0019] Figure 5 The third schematic diagram illustrating the structure of the touch layer in an embodiment of the present invention;

[0020] Figure 6 Fourth schematic diagram illustrating the structure of the touch layer in an embodiment of the present invention;

[0021] Figure 7 Fifth schematic diagram illustrating the structure of the touch layer in an embodiment of the present invention;

[0022] Figure 8 Sixth schematic diagram illustrating the structure of the touch layer in an embodiment of the present invention;

[0023] Figure 9 Seventh schematic diagram illustrating the structure of the touch layer in an embodiment of the present invention;

[0024] Figure 10 Eighth schematic diagram illustrating the structure of the touch layer according to an embodiment of the present invention;

[0025] Figure 11 Schematic diagram nine illustrating the structure of the touch layer according to an embodiment of the present invention;

[0026] Figure 12 Schematic diagram ten illustrating the structure of the touch layer according to an embodiment of the present invention;

[0027] Figure 13 Schematic diagram eleven illustrating the structure of the touch layer according to an embodiment of the present invention;

[0028] Figure 14 12. A schematic diagram illustrating the structure of the touch layer according to an embodiment of the present invention;

[0029] Figure 15 Thirteenth schematic diagram illustrating the structure of the touch layer according to an embodiment of the present invention;

[0030] Figure 16 Fourteenth schematic diagram illustrating the structure of the touch layer according to an embodiment of the present invention;

[0031] Figure 17 A flowchart illustrating the control method of an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Touch layer; 11-First non-bending area; 12-Second non-bending area; 13-Bending area; 2-First touch area; 3-Touch unit; 31-First touch electrode; 4-Diode. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0036] The control method provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0037] Please refer to Figures 1 to 16 This invention provides a touch display device, including: a flexible display panel and a touch layer 1 disposed on the flexible display panel; the touch layer 1 includes a plurality of touch units 3;

[0038] Among them, such as Figure 2 In the first touch area 2, each touch unit 3 includes a plurality of first touch electrodes 31 connected sequentially along a first direction; a switch unit is connected between the plurality of first touch electrodes 31; the first touch area 2 is at least a portion of the touch area in the touch layer;

[0039] The touch display device further includes a control circuit, which is connected to a switching unit of at least one of the touch units 3 of the first touch area 2.

[0040] When the flexible display panel is in the unfolded state, the control circuit is used to send a first control signal to each switch unit in the first touch area. The first control signal is used to control the switch unit to be in the on state.

[0041] When the flexible display panel is in a folded state, the control circuit sends a second control signal to at least a portion of the switching units in the first touch area, the second control signal being used to control the switching units to be in an open state.

[0042] Specifically, multiple touch units 3 are distributed in the touch layer 1, and each touch unit 3 includes multiple touch electrodes. The touch electrodes in the first touch area 2 are specifically referred to as the first touch electrode 31.

[0043] Here, the touch electrode can be a touch sensor, which is a conductive layer with a certain degree of transparency. It can be indium tin oxide (ITO), a metal mesh, or nano-silver, etc. This application refers to it as a touch electrode.

[0044] In such Figure 2 In the touch layer 1 shown, the square represents the touch electrode. Multiple touch electrodes in each touch unit 3 are arranged along a first direction and are sequentially electrically connected. The touch electrodes can also be other shapes, such as rhombuses or rectangles; this application is merely illustrative.

[0045] Specifically, the control circuit can control the opening and closing of the switching unit of at least one of the touch units 3 in the first touch area 2, thereby controlling the connection and disconnection of each touch unit 3. For example... Figure 3 As shown, there is actually a schematic diagram of the touch unit 3 in the disconnected state and the connected state.

[0046] In the above embodiments, the control circuit can control the on and off of at least some of the touch units in the first touch area. Thus, when the flexible display panel is in the unfolded state, by turning on all the touch units 3 in the first touch area, the normal screen touch experience and display effect can be achieved without affecting the screen. When the flexible display panel is in the folded state, turning off at least some of the touch units 3 in the first touch area can destroy the structure of the U-shaped cavity, adjust the resonance mode of the cavity, shift the resonance frequency, and remove the resonance mode from the working frequency band, thereby controlling the noise in the U-shaped cavity.

[0047] Here, the first touch area can be set according to the location of the under-screen antenna, so as to better adjust the resonance mode of the cavity and avoid affecting the antenna performance.

[0048] In one embodiment, the switching unit is a diode, and the diodes in the same touch unit 3 have the same polarity.

[0049] like Figure 4As shown, a diode is integrated between two adjacent first touch electrodes 31 in each touch unit 3. The diodes in the same touch unit 3 have the same polarity, which facilitates the overall control of the connection and disconnection of a certain touch unit 3.

[0050] See Figure 5 and Figure 6 In one embodiment, the first touch area 2 belongs to the bending area 13 of the flexible display panel; wherein, the first non-bending area 11 of the flexible display panel is connected to the second non-bending area 12 of the flexible display panel through the bending area 13.

[0051] For example, such as Figure 5 In this system, when the screen is unfolded, every touch unit 3 in the touch layer can be activated without affecting the normal touch experience. For example... Figure 6 In the folded state, since the inner screen is not in use, it does not cause any additional impact on the user experience. In the folded state, the touch unit 3 within the bending area 13 can be set to at least partially disconnected to disrupt the sidewall structure of the U-shaped cavity. After changing the shape of the cavity, the cavity resonance mode will change, and its resonance frequency will shift, thereby achieving clutter control.

[0052] Specifically, when diodes are integrated between two adjacent first touch electrodes 31 in each touch unit 3, the control circuit disconnects all diodes, which is equivalent to all first touch electrodes 31 in the bending area being suspended metal and not connected to each other. Compared with the sidewall connection state, the sidewall is completely disconnected, which destroys the original U-shaped cavity sidewall structure. After changing the cavity shape, the cavity resonance mode will change and its resonance frequency will shift, thereby realizing noise control.

[0053] For ease of explanation, in this embodiment, the touch unit 3 within the bending area 13 is connected to the control circuit and is configured to be uniformly connected or disconnected; however, it is not limited to partially connected or partially disconnected within the control area, in order to achieve modular control. For example, for different antenna frequency bands, the touch unit 3 within the bending area 13 can be freely set to be completely or partially disconnected, thereby achieving controllable multi-band resonant cavity mode clutter.

[0054] In the above embodiments, the touch units 3 in the first non-bending area 11 and the second non-bending area 12 are not connected to the control circuit and the switch unit, that is, the touch units 3 in the first non-bending area 11 and the second non-bending area 12 are always in a connected state and do not affect the display of the screen; the touch units 3 in the bending area 13 are connected to the control circuit and the switch unit. The control circuit and the switch unit can control the on and off of the touch units 3 in the bending area 13, thereby destroying the resonant U-shaped cavity sidewall structure, changing the resonant mode in the cavity, and causing the resonant frequency in the cavity to shift, thereby realizing noise control.

[0055] See Figure 7 and Figure 8 In one embodiment, the first touch area 2 is a first non-bending area 11 and / or a second non-bending area 12 of the flexible display panel; wherein the first non-bending area 11 is connected to the second non-bending area 12 through the bending area 13 of the flexible display panel.

[0056] In this embodiment, the touch units 3 in the first non-bending area 11 and the second non-bending area 12 are connected to a switch unit and a control circuit; the touch units 3 in the bending area 13 are not connected to a control circuit and a switch unit.

[0057] For example, when the screen is in the position of Figure 7 When the flexible display panel is in the unfolded state shown, it does not form a U-shaped cavity, and there is no antenna or resonant cavity noise interference. Because no adjustment is required, the control circuit connects all the switching units in the first non-bending area 11 and the second non-bending area 12. Therefore, it does not affect the normal screen touch experience and display effect.

[0058] For example, when the screen is in the position of Figure 8 In the folded state shown, each first touch electrode in each touch unit 3 within the first non-bending area 11 and the second non-bending area 12 can be controlled to be in a suspended state where they are not interconnected. Since the screen is in the folded state, the inner screen is not needed, so it will not affect the user experience. Thus, in the folded state, the U-shaped cavity is equivalent to the upper and lower walls being suspended metal and the side walls being connected metal. Because the upper and lower walls of the cavity are in a disconnected and suspended state, compared to the original fully connected U-shaped cavity, the upper and lower wall structure of the U-shaped cavity is disrupted, changing the resonance mode within the cavity and causing the resonance frequency to shift. This removes the resonance mode from the operating band, achieving clutter control.

[0059] Furthermore, the touch units 3 within the first non-bending area 11 and the second non-bending area 12 can be controlled independently. Thus, the control methods can include the following four control states: a first state where the first non-bending area 11 is connected and the second non-bending area 12 is disconnected; a second state where the first non-bending area 11 is disconnected and the second non-bending area 12 is connected; a third state where the first non-bending area 11 is disconnected and the second non-bending area 12 is disconnected; and a fourth state where the first non-bending area 11 is connected and the second non-bending area 12 is connected. Because the first touch area has multiple control states, it can be applied to control of different frequency bands, thereby achieving multi-band resonant cavity mode tunability.

[0060] In one embodiment, when the screen is in a folded state, corresponding screen control states can be set according to different antennas and different operating frequency bands to adjust the resonant mode within the U-shaped cavity. This allows for switching of the corresponding control states as the antenna and its frequency band change, thereby achieving dynamic adjustment of the multi-band resonant cavity mode.

[0061] See Figure 9 and Figure 10 In one embodiment, the first touch area 2 is the entire touch area in the touch layer 1; when the flexible display panel is in a folded state, the control circuit is used to send the second control signal to the switch unit in the entire touch area.

[0062] In this embodiment, all touch units 3 within the entire touch area of ​​the touch layer 1 are connected to a switch unit, and all touch units 3 are controlled to be switched on and off uniformly through a control circuit. That is, the touch layer 1 in this embodiment has two states: all connected and all disconnected.

[0063] For example, when the screen is in the position of Figure 9 When the touch layer 1 is in the unfolded state, since the touch layer 1 does not form a U-shaped cavity, there is no antenna or resonant cavity noise interference. Therefore, no adjustment is required. The touch units 3 in all touch areas of the touch layer 1 can be connected through the control circuit. Thus, it does not affect the normal screen touch experience and display effect.

[0064] For example, when the screen is in the position of Figure 10 In the folded state shown, the touch layer 1 forms a U-shaped cavity. Since all touch units 3 in the touch layer 1 are connected to control circuits and switching units, the switching units of all touch units 3 on the inner screen of the touch layer 1 can be disconnected by the control circuit. Thus, when the screen is folded, the U-shaped cavity is equivalent to having suspended metal walls on the top, bottom, and side walls. Compared to the original fully connected U-shaped cavity, this disrupts the U-shaped cavity structure, changes the resonant mode within the cavity, and shifts the resonant frequency, thereby removing the resonant mode outside the operating band and achieving noise modulation. Furthermore, since the inner screen is not used when the screen is folded, it does not affect the user experience.

[0065] See Figures 11 to 16 In one embodiment, the first touch area 2 includes multiple touch sub-areas.

[0066] When the flexible display panel is in a folded state, the control circuit is used to disconnect the switching unit in a portion of the touch sub-area.

[0067] For example, such as Figure 11 As shown, the entire inner screen's touch layer is divided into five touch sub-regions: A, B, C, D, and E (for ease of explanation, this embodiment uses equal divisions, but is not limited to equal divisions). When the screen is in the unfolded state, as... Figure 11As shown, since the screen does not form a U-shaped cavity and has no antenna or resonant cavity noise interference, no adjustment is required. The control circuit connects all touch units 3 in the touch sub-area to a connected state, meaning that every touch unit 3 on the screen is connected, which does not affect the normal screen touch experience and display effect.

[0068] For example, when the screen is in such a state Figure 11 In the folded state shown, touch layer 1 forms a U-shaped cavity, and the connection state of touch units 3 in touch sub-regions A, B, C, D, and E can be controlled independently by the loading of the control circuit. Due to the loading of the control circuit, each touch sub-region can independently control the on / off state of its corresponding switch unit; therefore, the on / off combinations of different touch sub-regions include 32 control states. For simplicity, two examples of control states are given below:

[0069] Example 1, such as Figure 13 and 14 In this configuration, touch units 3 in touch sub-regions A, C, and E are set to be connected, while touch units 3 in touch sub-regions B and D are set to be disconnected. At this time, the first touch electrode 31 in touch sub-regions B and D is equivalent to a suspended metal unit, and the touch units 3 in touch sub-regions A, C, and E are connected. Compared to the original structure, this disrupts the resonant cavity structure, thereby affecting the corresponding resonant mode and effectively removing the resonant mode from the antenna's operating frequency band.

[0070] Example 2, such as Figure 15 and 16 In this configuration, touch unit 3 in touch sub-regions A, C, and E is set to disconnect, while touch unit 3 in touch sub-regions B and D is set to connect. At this time, the first touch electrode 31 in touch sub-regions A, C, and E is equivalent to a suspended metal unit, and the touch unit 3 in touch sub-regions B and D is connected. Compared to the original structure, this disrupts the resonant cavity structure, thereby affecting the corresponding resonant mode and effectively removing the resonant mode from the antenna's operating frequency band.

[0071] It should be noted that since the touch sub-regions A, B, C, D, and E are connected to independent control circuits, different control combinations can be set for antennas with different settings and different operating frequency bands, so as to achieve multi-band resonant cavity mode tunability.

[0072] It should be noted that the above embodiment divides the entire screen into 5 touch sub-regions, which is only an example, and the number of touch sub-regions and the size and method of dividing the area are not limited.

[0073] In the above embodiments of this application, on the one hand, the clutter interference problem caused by the U-shaped resonant cavity in the folded state can be solved by controlling the on / off state of the touch unit in the first touch area in the folded state, without introducing additional structures and devices, and without affecting the existing terminal layout. On the other hand, by loading the control circuit, the on / off state of the touch unit 3 in the touch layer can be modularly controlled, making the design more flexible. For the multiple resonant modes of the resonant cavity, the controllability of multiple frequency bands and multiple resonant modes can be flexibly realized by combining different control states.

[0074] This invention also provides an electronic device, including the touch display device described above.

[0075] In this embodiment, when the electronic device is in a folded state, the structure of the U-shaped cavity in the folded state can be disrupted by controlling the switching unit of at least one of the touch units in the first touch area to be in an open state, thereby achieving controllable clutter. This solves the problem of the U-shaped cavity affecting antenna performance without affecting the screen display effect and touch experience.

[0076] join Figure 17 This invention also provides a control method applied to the electronic device described above, the method comprising the following steps:

[0077] Step 101: When the flexible display panel is in the unfolded state, the control circuit sends a first control signal to each switch unit in the first touch area. The first control signal is used to control the switch unit to be in the on state.

[0078] Step 102: When the flexible display panel is in a folded state, the control circuit sends a second control signal to at least a portion of the switching units in the first touch area. The second control signal is used to control the switching units to be in an open state.

[0079] In this embodiment, by identifying the extended state of the flexible display panel of the electronic device, and when it is in the extended state, all touch units in the touch layer are controlled to be turned on, without affecting the screen display effect and touch experience; when it is in the folded state, the switching unit of at least one of the touch units in the first touch area is controlled to be in the off state through modular control, so that the noise is controllable. While not affecting the screen display effect and touch experience, the impact of the U-shaped cavity on the antenna performance is solved.

[0080] In one embodiment, the first touch area is the entire touch area in the touch layer; when the flexible display panel is in a folded state, the control circuit sends the second control signal to all the switching units in the first touch area.

[0081] In this embodiment, all touch units 3 within the entire touch area of ​​the touch layer are connected to a switch unit, and all touch units 3 are controlled to be switched on and off uniformly through a control circuit. That is, the touch layer 1 in this embodiment has two states: all connected and all disconnected.

[0082] In one embodiment, the first touch area includes a plurality of touch sub-areas; when the flexible display panel is in a folded state, the control circuit sends the second control signal to the switching unit in a portion of the touch sub-areas.

[0083] In this embodiment, the switching units in each touch sub-area are controlled independently. In this way, the switching units in some touch sub-areas can be reasonably controlled for antennas with different settings and different operating frequency bands, so as to realize the adjustable mode of multi-band resonant cavity.

[0084] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0085] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0086] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A touch display device, characterized in that, The touch display device comprises: a flexible display panel and a touch layer arranged on the flexible display panel; the touch layer comprises a plurality of touch units; each of the touch units in the first touch area comprises a plurality of first touch electrodes connected in sequence along a first direction; a switching unit is connected between two adjacent first touch electrodes in each of the touch units; the first touch area is at least part of the touch area in the touch layer; The touch display device further comprises: a control circuit connected to the switching unit of at least one of the touch units in the first touch area; In a case where the flexible display panel is in an unfolded state, the control circuit is configured to send a first control signal to each of the switching units in the first touch area, the first control signal being configured to control the switching units to be in a conductive state; In a case where the flexible display panel is in a folded state, the control circuit is configured to send a second control signal to at least part of the switching units in the first touch area, the second control signal being configured to control the switching units to be in a non-conductive state, so as to break the U-shaped cavity structure and adjust the resonance mode of the U-shaped cavity. 2.The touch display device of claim 1, wherein, The switching unit is a diode, and the diodes in the same touch unit have the same polarity. 3.The touch display device of claim 1, wherein, The first touch area belongs to a bending area of the flexible display panel; wherein a first non-bending area of the flexible display panel is connected to a second non-bending area of the flexible display panel through the bending area. 4.The touch display device of claim 1, wherein, The first touch area is a first non-bending area and / or a second non-bending area of the flexible display panel; wherein the first non-bending area is connected to the second non-bending area through a bending area of the flexible display panel.

5. The touch display device according to claim 1, wherein, The first touch area is all of the touch areas in the touch layer; In a case where the flexible display panel is in a folded state, the control circuit is configured to send the second control signal to the switching units in all of the touch areas. 6.The touch display device of claim 1, wherein, The first touch area comprises a plurality of touch sub-areas; In a case where the flexible display panel is in a folded state, the control circuit is configured to send the second control signal to the switching units in part of the touch sub-areas.

7. An electronic device, comprising: The touch display device comprises:

8. A control method characterized by, The method is applied to the electronic device, and the method comprises: In a case where the flexible display panel is in an unfolded state, the control circuit sends a first control signal to each of the switching units in the first touch area, the first control signal being configured to control the switching units to be in a conductive state; In a case where the flexible display panel is in a folded state, the control circuit sends a second control signal to at least part of the switching units in the first touch area, the second control signal being configured to control the switching units to be in a non-conductive state.

9. The control method according to claim 8, characterized by, The first touch area is all of the touch areas in the touch layer; In a case where the flexible display panel is in a folded state, the control circuit sends the second control signal to all of the switching units in the first touch area.

10. The control method according to claim 8, characterized by, The first touch area comprises a plurality of touch sub-areas; In a case where the flexible display panel is in a folded state, the control circuit sends the second control signal to the switch unit in part of the touch sub-areas.

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