Display panel, display device and driving method of display panel

Abstract

The invention discloses a display panel, a display device and a driving method of the display panel, the display panel comprises a first electrode, a second electrode, a first switch, a second switch and a control chip, and the first electrode and the second electrode intersect and are arranged in an insulated manner; the plurality of first switches and the plurality of first electrodes are arranged in a one-to-one correspondence manner, and the first switches are used for connecting the corresponding first electrodes and the control chip; the second switches and the second electrodes are arranged in a one-to-one correspondence mode, the second switches are used for connecting the corresponding second electrodes and the control chip, and the first electrodes and the second electrodes are used for transmitting touch signals at the first moment and transmitting tactile signals at the second moment. By means of the mode, the display panel has the touch control function and the tactile feedback function at the same time, and the structure is simple.

Description

Technical Field

[0001] The present application relates to the field of touch technology, and particularly to a display panel, a display device, and a driving method for a display panel. Background Art

[0002] With the continuous development of touch display technology, touch operations have penetrated into all aspects of people's lives, and many electronic products already support touch and tactile feedback functions. During long-term research and development, the applicant of the present application found that the structure of tactile feedback increases the complexity of the display panel and the stability of tactile feedback is insufficient. Summary of the Invention

[0003] The main technical problem to be solved by the present application is to provide a display panel, a display device, and a driving method that can simultaneously have touch and tactile feedback functions and have a simple structure.

[0004] To solve the above technical problem, one technical solution adopted by the present application is: providing a display panel, including: a plurality of first electrodes; a plurality of second electrodes, the first electrodes and the second electrodes are arranged in a cross and insulated manner; a plurality of first switches, corresponding to the plurality of first electrodes, the first switches are used to connect the corresponding first electrodes to a control chip; a plurality of second switches, corresponding to the plurality of second electrodes, the second switches are used to connect the corresponding second electrodes to the control chip; wherein, the first electrodes and the second electrodes are used to transmit touch signals at a first moment and transmit tactile signals at a second moment.

[0005] To solve the above technical problem, another technical solution adopted by the present application is: providing a display device, including the display panel described in any one of the above.

[0006] To solve the above technical problem, another technical solution adopted by the present application is: providing a driving method for a display panel, the display panel includes a first electrode and a second electrode arranged in a cross and insulated manner, a first switch connecting the first electrode to a control chip, and a second switch connecting the second electrode to the control chip, the method includes: when controlling the first switch and the second switch to be turned on, the first electrode and the second electrode determine a touch area in response to receiving a touch signal; controlling the switch electrically connected to the target electrode to be turned on and the switches electrically connected to other electrodes to be turned off, wherein at least a part of the target electrode is located in the touch area; outputting a tactile signal to the target electrode.

[0007] The beneficial effects of this application are as follows: Different from the prior art, in this application, the first electrode is electrically connected to the control chip through the first switch, and the second electrode is electrically connected to the control chip. When in the touch mode, both the first switch and the second switch are in the on state. After obtaining the touch area through touch positioning of the user, the switch electrically connected to the target electrode is turned on, and the switches electrically connected to other electrodes are turned off. Then, a tactile signal is output to the target electrode, causing the target electrode to generate an electrostatic tactile feedback within the touch area. Thus, the first electrode and the second electrode can be used to implement both the touch function and the tactile feedback function, which can simplify the structure of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0009] Figure 1 is a schematic structural diagram of an embodiment of the display panel of this application;

[0010] Figure 2 is a schematic structural diagram of an embodiment of the display panel of this application;

[0011] Figure 3 is Figure 1 a sectional view taken along A-A in

[0012] Figure 4 is a schematic structural diagram of another embodiment of the display panel of this application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, rather than all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.

[0014] Referring to Figure 1 , the display panel 100 includes a first electrode 11, a second electrode 12, a first switch 3, a second switch 4, and a control chip 5.

[0015] The first electrode 11 and the second electrode 12 are arranged to cross and be insulated from each other. Specifically, the first electrode 11 extends along the first direction D1, the second electrode 12 extends along the second direction D2, the first direction D1 crosses the second direction D2. In an application scenario, the first direction D1 is perpendicular to the second direction D2, and the first electrode 11 and the second electrode 12 are insulated from each other at the crossing point. Among them, one of the first electrode 11 and the second electrode 12 is a TX electrode, and the other is an RX electrode.

[0016] A plurality of first switches 3 are arranged in one-to-one correspondence with a plurality of first electrodes 11. The first switch 3 is used to connect the corresponding first electrode 11 to the control chip 5. A plurality of second switches 4 are arranged in one-to-one correspondence with a plurality of second electrodes 12. The second switch 4 is used to connect the corresponding second electrode 12 to the control chip 5. Among them, the first electrode 11 and the second electrode 12 are used to transmit touch signals at the first moment and transmit tactile signals at the second moment.

[0017] Specifically, one end of the first switch 3 is connected to the first electrode 11, and the other end is connected to the control chip 5, so as to control the electrical connection between the first electrode 11 and the control chip 5. One end of the second switch 4 is connected to the second electrode 12, and the other end is connected to the control chip 5, so as to control the electrical connection between the second electrode 12 and the control chip 5. Each first electrode 11 is electrically connected to the control chip 5 through a first switch 3, and each second electrode 12 is electrically connected to the control chip 5 through a second switch 4. When the first switch 3 is turned on, there is an electrical connection between the first electrode 11 and the control chip 5. When the first switch 3 is turned off, the connection between the first electrode 11 and the control chip 5 is disconnected. When the second switch 4 is turned on, there is an electrical connection between the second electrode 12 and the control chip 5. When the second switch 4 is turned off, the connection between the second electrode 12 and the control chip 5 is disconnected.

[0018] Combined Figure 1 and Figure 2 , the driving method of the display panel 100 includes:

[0019] S110: When all the first switches 3 and all the second switches 4 are turned on, the first switch 3 and the second switch 4 determine the touch area in response to receiving the touch signal.

[0020] Specifically, when all the first switches 3 and all the second switches 4 are turned on, when the user performs a touch operation, the control chip 5 completes the positioning of the user's touch through the first electrode 11 and the second electrode 12 to obtain the touch area, that is, the area where the user touches.

[0021] That is, the first electrode 11 and the second electrode 12 transmit touch signals at the first moment.

[0022] S120: Control the switch electrically connected to the target electrode to conduct, and turn off the switches electrically connected to other electrodes, where at least a part of the target electrode is located in the touch area.

[0023] Specifically, the control chip 5 controls the switch electrically connected to the target electrode (at least a part of which is located in the touch area) to conduct, and turns off the switches electrically connected to other electrodes, which can ensure that the control chip 5 can only output signals to the target electrode and guarantee the stability of subsequent driving.

[0024] S130: Output a haptic signal to the target electrode.

[0025] Specifically, after the control chip 5 outputs a haptic signal to the target electrode, an electrostatic haptic feedback can be generated in the touch area, enabling the user to feel sensations such as stripes, granularity, or a sense of resistance while touching.

[0026] That is, the first electrode 11 and the second electrode 12 transmit haptic signals at the second moment.

[0027] As can be seen from the above, the display panel 100 in this application can not only implement the touch function but also the haptic feedback function. That is to say, by using the first electrode 11 and the second electrode 12, both the touch function and the haptic feedback function can be implemented, which can simplify the structure of the display panel 100, reduce the manufacturing difficulty, and the thickness of the display panel 100.

[0028] In an application scenario, the target electrode can be only the first electrode 11 at least a part of which is located in the touch area. At this time, in step S130, the control chip 5 only outputs a haptic signal to the first electrode 11 at least a part of which is located in the touch area; in another application scenario, the target electrode is only the second electrode 12 at least a part of which is located in the touch area. At this time, in step S130, the control chip 5 only outputs a haptic signal to the second electrode 12 at least a part of which is located in the touch area; in yet another application scenario, the target electrode is both the first electrode 11 at least a part of which is located in the touch area and the second electrode 12 at least a part of which is located in the touch area. At this time, in step S130, the control chip 5 outputs a haptic signal to both the first electrode 11 at least a part of which is located in the touch area and the second electrode 12 at least a part of which is located in the touch area.

[0029] All in all, as long as it is ensured that at least a part of the electrodes located in the touch area can receive haptic signals, so as to generate electrostatic haptic feedback and implement the touch feedback function.

[0030] Combined with Figure 1 and Figure 3 , in an embodiment, the display panel 100 includes a first conductive layer 1, an insulating layer 6, and a second conductive layer 2 that are sequentially stacked.

[0031] The first electrode 11 includes a plurality of first electrode blocks 111 disposed in the first conductive layer 1 and arranged along the first direction D1. Two adjacent first electrode blocks 111 are electrically connected by a first connecting member 13 disposed in the first conductive layer 1. The second electrode 12 includes a plurality of second electrode blocks 121 disposed in the first conductive layer 1 and arranged along the second direction D2. The second direction D2 intersects the first direction D1. Two adjacent second electrode blocks 121 are electrically connected by a second connecting member 21 disposed in the second conductive layer 2.

[0032] Specifically, the plurality of first electrode blocks 111 are arranged along the first direction D1 and are electrically connected to each other by the first connecting member 13 to form the first electrode 11. The plurality of second electrode blocks 121 are arranged along the second direction D2 and are electrically connected to each other by the second connecting member 21 to form the second electrode 12. The first electrode blocks 111, the second electrode blocks 121, and the first connecting member 13 are all disposed in the first conductive layer 1, and the second connecting member 21 is disposed in the second conductive layer 2. By means of the second connecting member 21, short circuit at the intersection of the first electrode 11 and the second electrode 12 can be avoided.

[0033] Furthermore, when the first electrode 11 and the second electrode 12 are Figure 1 in the structure as shown, at this time, since the first electrode blocks 111 and the second electrode blocks 121 are both in the same layer, that is, most of the structures of the first electrode 11 and the second electrode 12 are in the same layer, the target electrode can be set to include at least a part of the first electrode 11 located in the touch area and at least a part of the second electrode 12 located in the touch area, that is, the tactile feedback function is realized by using the first electrode 11 and the second electrode 12 simultaneously.

[0034] In an embodiment, referring to Figure 1 continuously, the first electrode block 111 is a rhombic electrode block, and the second electrode block 121 is a rhombic electrode block. In other embodiments, the first electrode blocks 111 and the second electrode blocks 121 may also be of other shapes, which are not limited herein.

[0035] Continuously referring to Figure 1, in one embodiment, the first electrode block 111 includes a first main body portion 1111 and a first contact block 1112. The first main body portion 1111 is provided with a first through hole 11111, and the first contact block 1112 is disposed in the first through hole 11111. The display panel 100 further includes a third switch 71, and the third switch 71 is electrically connected to the first contact block 1112 and the first main body portion 1111 for controlling the on / off between the first contact block 1112 and the first main body portion 1111. The second electrode block 121 includes a second main body portion 1211 and a second contact block 1212. The second main body portion 1211 is provided with a second through hole 12111, and the second contact block 1212 is disposed in the second through hole 12111. The display panel 100 further includes a fourth switch 81, and the fourth switch 81 is electrically connected to the second contact block 1212 and the second main body portion 1211 for controlling the on / off between the second contact block 1212 and the second main body portion 1211.

[0036] Specifically, during touch control, all the third switches 71 and fourth switches 81 are in an off state. At this time, there is an open circuit between the first main body portion 1111 and the first contact block 1112, and there is an open circuit between the second main body portion 1211 and the second contact block 1212. That is, when implementing the touch control function, the first contact block 1112 and the second contact block 1212 do not play any role. When the haptic feedback function is to be implemented, that is, after determining the touch area, the third switches 71 and fourth switches 81 located in the touch area are turned on. At this time, the corresponding first main body portion 1111 and the first contact block 1112 are electrically connected, and the corresponding second main body portion 1211 and the second contact block 1212 are electrically connected. Therefore, when a haptic signal is output to the first electrode 11 and the second electrode 12 at least partially located in the touch area, the first contact block 1112 and the second contact block 1212 located in the touch area can also receive the haptic signal. Since the first contact block 1112 and the second contact block 1212 are in a small block structure, the haptic feedback to people is stronger, and a more delicate haptic feedback can be given to the user.

[0037] As can be seen from the foregoing, the target electrode can be only the first electrode 11 at least partially located in the touch area, or only the second electrode 12 at least partially located in the touch area. Therefore, when the target electrode is only the first electrode 11 at least partially located in the touch area, there is no need to provide the second through hole 12111 on the second electrode block 121, nor is it necessary to provide the second contact block 1212 and the fourth switch 81. When the target electrode is only the second electrode 12 at least partially located in the touch area, there is no need to provide the first through hole 11111 on the first electrode block 111, nor is it necessary to provide the first contact block 1112 and the third switch 71.

[0038] In one embodiment, the first contact block 1112 is made of the same material as the first main body 1111. For example, both the first contact block 1112 and the first main body 1111 are made of indium tin oxide (ITO). Using the same material can reduce the manufacturing process for preparing the first contact block 1112 and the first main body 1111 and improve the manufacturing efficiency.

[0039] In one embodiment, referring to Figure 1 , the cross-section of the first contact block 1112 is circular. Of course, the cross-section of the first contact block 1112 can also be rectangular, and the present application does not specifically limit the shape of the first contact block 1112.

[0040] In one embodiment, the third switch 71 is a thin-film transistor. Using a thin-film transistor can reduce power consumption and improve the response speed. Among them, the third switch 71 can be either a P-type thin-film transistor or an N-type thin-film transistor.

[0041] In one embodiment, the second contact block 1212 is made of the same material as the second main body 1211. For example, both the second contact block 1212 and the second main body 1211 are made of indium tin oxide (ITO). Using the same material can reduce the manufacturing process for preparing the second contact block 1212 and the second main body 1211 and improve the manufacturing efficiency.

[0042] In one embodiment, the fourth switch 81 is a thin-film transistor. Using a thin-film transistor can reduce power consumption and improve the response speed. The fourth switch 81 can be either a P-type thin-film transistor or an N-type thin-film transistor.

[0043] In one embodiment, the first contact block 1112 and the second contact block 1212 have the same structure, which is convenient for using the same process in processing to improve the processing efficiency. In one embodiment, the third switch 71 and the fourth switch 81 have the same structure, which is convenient for using the same device in the preparation process to improve the preparation efficiency. In one embodiment, not only the first contact block 1112 and the second contact block 1212 have the same structure, but also the third switch 71 and the fourth switch 81 have the same structure, which is convenient for simplifying the preparation process and improving the preparation and processing efficiency.

[0044] In another embodiment, in combination with Figure 3 and Figure 4 , the first electrode 11 and the second electrode 12 can also be in a strip structure. At this time, multiple first electrodes 11 are arranged in the first conductive layer 1, and multiple second electrodes 12 are arranged in the second conductive layer 2. In short, the present application does not limit the specific structures of the first electrode 11 and the second electrode 12.

[0045] When the first electrode 11 and the second electrode 12 are Figure 4When the structure is in, the light of the display panel 100 passes through the first conductive layer 1 and the second conductive layer 2 in sequence. At this time, since the second conductive layer 2 is closer to the user when the user touches it, the target electrode is set to include a second electrode 12 that is at least partially located in the touch area, that is, at least the second electrode 12 is used to perform the tactile feedback function, which can increase the intensity of the tactile feedback.

[0046] Furthermore, in one embodiment, the first switch 3 and the second switch 4 have the same structure. By adopting the same structure, the first switch 3 and the second switch 4 can be manufactured by the same process during the manufacturing process, thereby improving the manufacturing efficiency and saving the manufacturing cost.

[0047] In one embodiment, the first switch 3 is a thin film transistor, and in one embodiment, the second switch 4 is a thin film transistor. In one embodiment, both the first switch 3 and the second switch 4 are thin film transistors. Using thin film transistors can reduce power consumption and improve response speed. The first switch 3 can be either a P-type thin film transistor or an N-type thin film transistor, and the second switch 4 can be either a P-type thin film transistor or an N-type thin film transistor.

[0048] In one embodiment, step S130 includes generating a tactile signal according to the image displayed by the display panel 100 , and outputting the tactile signal to the target electrode.

[0049] Specifically, the tactile signal output to the target electrode is determined according to the picture displayed by the display panel 100 to ensure the realism of the tactile feedback. For example, when the user touches the display panel 100 and the picture displayed in the touch area is a cat, the driver chip generates a tactile signal that can reflect the touch of cat fur, so that the user can feel the tactile feedback of cat fur.

[0050] The present application also protects a display device, which includes a display panel 100 as described in any of the above embodiments. The display device can be used in electronic devices such as televisions, mobile phones, computers, stage screens, etc. The specific structure of the display panel 100 can be found in the above related content and will not be repeated here.

[0051] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, characterized in that: include: a plurality of first electrodes; A plurality of second electrodes, wherein the first electrodes and the second electrodes are intersecting and insulated from each other; a plurality of first switches, arranged corresponding to the plurality of first electrodes, the first switches being used to connect the corresponding first electrodes to a control chip; a plurality of second switches, arranged corresponding to the plurality of second electrodes, the second switches being used to connect the corresponding second electrodes to the control chip; The first electrode and the second electrode are used to transmit a touch signal at a first moment and to transmit a tactile signal at a second moment.

2. The display panel according to claim 1, characterized in that: The display panel comprises a first conductive layer, an insulating layer and a second conductive layer which are stacked in sequence; The first electrode comprises a plurality of first electrode blocks arranged in the first conductive layer and arranged along a first direction, and two adjacent first electrode blocks are electrically connected via a first connecting member arranged in the first conductive layer; The second electrode comprises a plurality of second electrode blocks arranged in the first conductive layer and arranged along a second direction, the second direction intersects the first direction, and two adjacent second electrode blocks are electrically connected via a second connecting member arranged in the second conductive layer; Preferably, the first electrode block is a diamond-shaped electrode block, and / or the second electrode block is a diamond-shaped electrode block.

3. The display panel according to claim 2, characterized in that: The first electrode block includes a first main body and a first contact block, the first main body is provided with a first through hole, and the first contact block is arranged in the first through hole; The display panel further includes a third switch, the third switch electrically connecting the first contact block and the first main body, and controlling the disconnection between the first contact block and the first main body; Preferably, the first contact block and the first main body are made of the same material; Preferably, the cross section of the first contact block is circular; Preferably, the third switch is a thin film transistor.

4. The display panel according to claim 3, characterized in that: The second electrode block includes a second main body and a second contact block, the second main body is provided with a second through hole, and the second contact block is arranged in the second through hole; The display panel further includes a fourth switch, the fourth switch electrically connecting the second contact block and the second main body, and controlling the disconnection between the second contact block and the second main body; Preferably, the second contact block and the second main body are made of the same material; Preferably, the fourth switch is a thin film transistor; Preferably, the first contact block has the same structure as the second contact block, and / or the third switch has the same structure as the fourth switch.

5. The display panel according to claim 1, characterized in that: The display panel comprises a first conductive layer, an insulating layer and a second conductive layer which are stacked in sequence; the first electrode is in a strip-shaped structure, and a plurality of the first electrodes are arranged in the first conductive layer; The second electrode is in a strip-shaped structure, and a plurality of the second electrodes are arranged in the second conductive layer; Preferably, the first switch and the second switch have the same structure; Preferably, the first switch / the second switch is a thin film transistor.

6. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 5.

7. A method for driving a display panel, characterized in that: The display panel includes a first electrode and a second electrode that are cross-connected and insulated, a first switch connecting the first electrode and a control chip, and a second switch connecting the second electrode and the control chip. The method includes: When the first switch and the second switch are controlled to be turned on, the first electrode and the second electrode determine a touch area in response to receiving a touch signal; Controlling a switch electrically connected to a target electrode to be turned on, and controlling switches electrically connected to other electrodes to be turned off, wherein the target electrode is at least partially located in the touch control area; A tactile signal is output to the target electrode.

8. The method according to claim 7, characterized in that The display panel comprises a first conductive layer, an insulating layer and a second conductive layer which are sequentially stacked; the first electrode comprises a plurality of first electrode blocks which are arranged in the first conductive layer and arranged along a first direction, and two adjacent first electrode blocks are electrically connected via a first connecting member which is arranged in the first conductive layer; the second electrode comprises a plurality of second electrode blocks which are arranged in the first conductive layer and arranged along a second direction, the second direction intersects with the first direction, and two adjacent second electrode blocks are electrically connected via a second connecting member which is arranged in the second conductive layer; The target electrode includes the first electrode at least partially located in the touch area and the second electrode at least partially located in the touch area.

9. The method according to claim 7, characterized in that: The display panel comprises a first conductive layer, an insulating layer and a second conductive layer which are stacked in sequence; the first electrode is in a strip-shaped structure, and a plurality of the first electrodes are arranged in the first conductive layer; The second electrode is in a strip-shaped structure, and a plurality of the second electrodes are arranged in the second conductive layer, and the light of the display panel sequentially passes through the first conductive layer and the second conductive layer to be emitted; The target electrode includes the second electrode at least partially located in the touch area.

10. The method according to claim 7, characterized in that The step of outputting a tactile signal to the target electrode comprises: The tactile signal is generated according to the picture displayed by the display panel, and the tactile signal is output to the target electrode.

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