Touch display panel and display device

Abstract

The present invention provides a touch display panel and a display device. The touch display panel includes a substrate having a display area and a peripheral area adjacent to each other, wherein the peripheral area has a first peripheral area and a second peripheral area arranged relative to the display area; a touch electrode array arranged on the substrate; a drive circuit arranged in the first peripheral area; a switch circuit arranged in the second peripheral area; a plurality of touch electrode lines, each of which is electrically connected to the drive circuit, the switch circuit and one of the touch electrodes; a plurality of dummy touch electrode lines arranged in the display area; wherein at least one of the plurality of dummy touch electrode lines is electrically connected to the drive circuit and the switch circuit, and is used to provide at least one touch signal to the switch circuit.

Description

Technical Field

[0001] The present invention relates to a display panel and a display device using the same, and in particular to a touch display panel and a display device suitable for various fringe sizes. Background Art

[0002] With the development of technology, display devices are widely used in many electronic products, such as mobile phones, tablet computers, watches, cars, etc.

[0003] For display devices of the same series, their size and resolution are the same, and the only difference is often the size of the opening (bangs), such as IPHONE12 and IPHONE13. During the manufacturing process, some masks are sometimes shared to reduce costs. The touch switch of an existing touch display device is usually arranged on the side of the opening (bangs) adjacent to the display area of ​​the display device. When manufacturing the opening (bangs), grinding or laser is usually used. During the grinding or laser process, the circuits between the touch switches near the opening (bangs) may be disconnected, thereby causing display abnormalities.

[0004] Therefore, how to effectively prevent the disconnection of the related circuits of the touch switch and cause display abnormality when manufacturing display devices with different openings (bangs) and improve the display quality of the touch display panel and the display device is one of the problems that need to be solved. Summary of the invention

[0005] The embodiments of the present invention provide a touch display panel and a display device, which can reduce the width of the peripheral area, avoid disconnection of the circuits between the touch switches near the opening, and improve the display quality.

[0006] A touch display panel according to one embodiment of the present invention comprises a substrate having a display area and a peripheral area adjacent to each other, wherein the peripheral area has a first peripheral area and a second peripheral area arranged relative to the display area; a touch electrode array arranged on the substrate; a drive circuit arranged in the first peripheral area; a switch circuit arranged in the second peripheral area; a plurality of touch electrode lines, each of which is electrically connected to the drive circuit, the switch circuit and one of the touch electrodes; a plurality of dummy touch electrode lines arranged in the display area; at least one of the plurality of dummy touch electrode lines is electrically connected to the drive circuit and the switch circuit, and is used to provide at least one touch signal to the switch circuit.

[0007] The above-mentioned touch display panel, wherein the multiple virtual touch electrode lines further include a control signal line, a first drive signal line and a second drive signal line; the touch signal further includes a touch control signal, a first touch drive signal and a second touch drive signal; the control signal line is used to transmit the touch control signal, the first drive signal line is used to transmit the first touch drive signal, and the second drive signal line is used to transmit the second touch drive signal.

[0008] In the above touch display panel, one of two adjacent touch electrodes in the touch electrode array receives the first touch driving signal, and the other one receives the second touch driving signal.

[0009] The above-mentioned touch display panel, wherein, when the touch display panel is in a testing phase, the first touch drive signal is different from the second touch drive signal; when the touch display panel is in a normal use phase, the first touch drive signal is the same as the second touch drive signal.

[0010] The above-mentioned touch display panel, wherein the touch electrode array includes a first type of touch electrodes and a second type of touch electrodes, the switching circuit further includes a first switch group and a second switch group, the first drive signal line is electrically connected to the first switch group and electrically connected to the first type of touch electrodes, the second drive signal line is electrically connected to the second switch group and electrically connected to the second type of touch electrodes, and the control signal line is electrically connected to the first switch group and the second switch group.

[0011] The above-mentioned touch display panel, wherein the first switch group and the second switch group respectively include multiple switch elements, the switch elements have a first end, a second end and a control end, the first drive signal line is electrically connected to the first end of the switch element in the first switch group, the second drive signal line is electrically connected to the first end of the switch element in the second switch group, and the control signal line is electrically connected to the control end of the switch element.

[0012] In the above touch display panel, the touch electrode line is electrically connected to the second end of the switch element.

[0013] In the above touch display panel, the projection of the touch electrode array on the substrate covers the projection of the control signal line.

[0014] The above-mentioned touch display panel, wherein the peripheral area also has a third peripheral area and a fourth peripheral area arranged relative to the display area, and the touch display panel also includes a plurality of signal leads, which are connected to the driving circuit and extend from the third peripheral area and the fourth peripheral area to electrically connect some switching elements.

[0015] The above-mentioned touch display panel, wherein the display area has a first side portion, a middle portion and a second side portion; the control signal line, the first drive signal line and the second drive signal line are all arranged on the first side portion, the middle portion or the second side portion; or, the control signal line, the first drive signal line and the second drive signal line are arranged on at least two of the first side portion, the middle portion and the second side portion.

[0016] A display device according to an embodiment of the present invention includes any one of the touch display panels described above.

[0017] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 A magnified schematic diagram of region Q is shown.

[0020] Figure 3 It is a schematic diagram of a partial structure of a touch display panel according to an embodiment of the present invention.

[0021] Figure 4A FIG. 4 is a schematic diagram of the arrangement of dummy touch electrode lines according to an embodiment of the present invention.

[0022] Figure 4B FIG. 4 is a schematic diagram of the arrangement of dummy touch electrode lines according to another embodiment of the present invention.

[0023] Figure 4C FIG. 4 is a schematic diagram of the arrangement of dummy touch electrode lines according to another embodiment of the present invention.

[0024] Wherein, the reference numerals are:

[0025] 100: Touch display panel

[0026] 101: Substrate

[0027] 102: Touch electrode array

[0028] 103: Driving circuit

[0029] 104: Switching Circuit

[0030] 105: Touch electrode line

[0031] 106: Virtual touch electrode line

[0032] 1061: First driving signal line

[0033] 1062: Second driving signal line

[0034] 1063: Control signal line

[0035] 107: Signal lead

[0036] 108: Opening

[0037] AA: Display area

[0038] BA: Peripheral area

[0039] BA1: First peripheral area

[0040] BA2: Second peripheral area

[0041] SW: Switching element

[0042] SW1: First switch element

[0043] SW2: Second switch element

[0044] TP: Touch electrode

[0045] TP1: First touch drive signal

[0046] TP2: Second touch drive signal

[0047] TPSW: Touch control signal DETAILED DESCRIPTION

[0048] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0049] Figure 1 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention, Figure 2 yes Figure 1 The enlarged schematic diagram of the area Q is shown. Figure 1 , Figure 2 As shown, the touch display panel 100 of the present invention includes a substrate 101 , a touch electrode array 102 , a driving circuit 103 , a switch circuit 104 and a touch electrode line 105 (TP trace).

[0050] The substrate 101 has a display area AA and a peripheral area BA that are adjacent to each other. In one embodiment, the peripheral area BA is disposed at the periphery of the display area AA. The peripheral area BA has a first peripheral area BA1 and a second peripheral area BA2 that are disposed opposite to the display area AA. That is, the first peripheral area BA1 is disposed adjacent to one side of the display area AA, and the second peripheral area BA2 is disposed adjacent to the other side opposite to the display area AA. Figure 1 As shown in , the first peripheral area BA1 is arranged at the lower side of the display area AA, and the second peripheral area BA2 is arranged at the upper side of the display area AA. The touch electrode array 102 is arranged on the substrate 101, and has a plurality of touch electrodes TP arranged in an array, and is arranged corresponding to the display area AA. The driving circuit 103 is arranged in the first peripheral area BA1, the switch circuit 104 is arranged in the second peripheral area BA2 and is electrically connected to the driving circuit 103, and a plurality of touch electrode lines 105 are electrically connected to the switch circuit 104, and any one of the plurality of touch electrode lines 105 is also electrically connected to a touch electrode TP in the touch electrode array 102.

[0051] The touch display panel 100 of the present invention further has a plurality of dummy touch electrode lines 106 (dummy traces), which are disposed in the display area AA, and at least one of the plurality of dummy touch electrode lines 106 is electrically connected to the drive circuit 103 and the switch circuit 104, and is used to provide at least one touch signal to the switch circuit 104. It should be noted that in order to facilitate the identification of the touch electrode line 105, Figure 1 and Figure 2 The virtual touch electrode lines 106 are shown with dotted lines.

[0052] Specifically, one end of at least one dummy touch electrode line 106 receives at least one touch signal provided by the driving circuit 103 located in the first peripheral area BA1 and transmits it to the switch circuit 104 located in the second peripheral area BA2 which is electrically connected to the other end thereof, and then transmits it to the corresponding touch electrode TP via the switch circuit 104 and the touch electrode line 105. In one embodiment, the dummy touch electrode line 106 is not connected to each touch electrode TP, and when the dummy touch electrode line does not participate in the transmission of the aforementioned at least one touch signal, it can be connected to a common voltage to reduce interference between the touch electrodes TP.

[0053] The touch display panel 100 of the present invention transmits at least one touch signal via the virtual touch electrode lines 106 disposed in the display area AA, does not occupy the peripheral area BA and has a short transmission path, which is conducive to reducing the size of the peripheral area BA and ensuring signal transmission efficiency and quality. In addition, the present invention uses part of the virtual touch electrode lines 106 for signal transmission, which does not affect the aperture ratio and brightness of the touch display panel 100.

[0054] like Figure 1 As shown, the dummy touch electrode line 106 includes a first drive signal line 1061, a second drive signal line 1062 and a control signal line 1063. The first drive signal line 1061 is used to transmit the first touch drive signal TP1 to the switch circuit 104 after receiving the first touch drive signal TP1 from the drive circuit 103, the second drive signal line 1062 is used to transmit the second touch drive signal TP2 to the switch circuit 104 after receiving the second touch drive signal TP2 from the drive circuit 103, and the control signal line 1063 is used to transmit the touch control signal TPSW to the switch circuit 104 after receiving the touch control signal TPSW from the drive circuit 103. In the present invention, three dummy touch electrode lines 106 are taken as an example for description, and the three dummy touch electrode lines 106, namely the first drive signal line 1061, the second drive signal line 1062 and the control signal line 1063, are all electrically connected to the switch circuit 104, of course, the present invention is not limited thereto.

[0055] In the present invention, the switch circuit 104 includes a plurality of switch elements SW, each of which has a first end, a second end, and a control end. The first drive signal line 1061 is electrically connected to the first end of the first switch element SW1, and is used to transmit the first touch drive signal TP1 to the first switch element SW1 after receiving the first touch drive signal TP1 from the drive circuit 103. The second drive signal line 1062 is electrically connected to the first end of the second switch element SW2, and is used to transmit the second touch drive signal TP2 to the second switch element SW2 after receiving the second touch drive signal TP2 from the drive circuit 103. The control signal line 1063 is electrically connected to the control end of the switch element SW (SW1, SW2), and is used to transmit the touch control signal TPSW to the switch element SW after receiving the touch control signal TPSW from the drive circuit 103. The touch electrode line 105 is correspondingly electrically connected to the second end of the switch element SW. In the present invention, all the first switch elements SW1 are defined as a first switch group, and all the second switch elements SW2 are defined as a second switch group.

[0056] In one embodiment, the touch display panel 100 has an opening area (bangs) 108, and the first switch group and the second switch group are arranged corresponding to the opening area (bangs) 108. The portion of the display area AA corresponding to the opening area (bangs) 108 is defined as the first display area AA1, and the first drive signal line 1061, the second drive signal line 1062 and the control signal line 1063 are located in the first display area AA1. The first switch group and the second switch group are used to transmit the at least one touch signal to each touch electrode TP in the first display area AA1. In this embodiment, since an additional signal transmission path is set for the touch electrode TP in the first display area AA1 corresponding to the opening area 108, at least one touch signal is received from the drive circuit 103 through the virtual touch electrode line 106 located in the display area AA and transmitted to the corresponding switch element SW and then transmitted to the corresponding touch electrode TP, so that the touch electrode TP in the first display area AA1 can smoothly receive the corresponding signal through the first drive signal line 1061, the second drive signal line 1062, the control signal line 1063, the first switch group and the second switch group. In the process of manufacturing the opening area by grinding or laser, there is no need to worry about the switch circuit 104 near the opening area 108 being disconnected and causing display abnormality, thereby improving the display quality.

[0057] Specifically, Figure 1 and Figure 2 As shown, the control ends of the plurality of first switch elements SW1 and the plurality of second switch elements SW2 are connected to the same signal line, the first ends of the plurality of first switch elements SW1 are connected to the same signal line, and the first ends of the plurality of second switch elements SW2 are connected to the same signal line. In the process of manufacturing the opening area by grinding or laser, the aforementioned signal line is prone to disconnection at the turning points at both ends of the opening area 108. Since a dedicated signal transmission path is set in the first display area AA1 corresponding to the opening area 108 in the present invention, even if the signal line is disconnected at the turning point, the signal transmission can still be completed through the first drive signal line 1061, the second drive signal line 1062, the control signal line 1063, the first switch group and the second switch group, thereby ensuring the display quality.

[0058] like Figure 1As shown, the display area AA also includes a second display area AA2 and a third display area AA3 located on both sides of the first display area AA1. The switch circuit 104 also includes a third switch group, a fourth switch group, a fifth switch group and a sixth switch group. The third switch group and the fourth switch group are located on one side of the first switch group and the second switch group, and the fifth switch group and the sixth switch group are located on the other side of the first switch group and the second switch group. In other words, the third switch group and the fourth switch group are arranged corresponding to the second display area AA2, and the fifth switch group and the sixth switch group are arranged corresponding to the third display area AA3. Further, the third switch group and the fifth switch group each include a plurality of first switch elements SW1, the fourth switch group and the sixth switch group each include a plurality of second switch elements SW2, and the plurality of first switch elements SW1 and the plurality of second switch elements SW2 are respectively connected to the corresponding touch electrodes TP via the corresponding touch electrode lines 105.

[0059] In one embodiment, if Figure 1 As shown, the peripheral area BA further includes a third peripheral area (located on the left side of the display area AA in this embodiment) and a fourth peripheral area (located on the right side of the display area AA in this embodiment) arranged relative to the display area AA, and the touch display panel 100 further includes a plurality of signal leads 107, which extend from the peripheral area on the left side of the display area AA (the third peripheral area) and the peripheral area on the right side of the display area AA (the fourth peripheral area) and are electrically connected to the drive circuit 103 and the switch circuit 104. For example, the signal lead 107 located on the left side of the display area AA is electrically connected to the drive circuit 103, the third switch group, and the fourth switch group, and the signal lead 107 located on the right side of the display area AA is electrically connected to the drive circuit 103, the fifth switch group, and the sixth switch group. The plurality of signal leads 107 are respectively used to transmit the first touch driving signal TP1, the second touch driving signal TP2 and the touch control signal TPSW, so that the touch electrodes TP in the second display area AA2 can smoothly receive corresponding signals from the third switch group and the fourth switch group, and the touch electrodes TP in the third display area AA3 can smoothly receive corresponding signals from the fifth switch group and the sixth switch group. Of course, in other embodiments, the plurality of signal leads 107 can also transmit other required signals, and the present invention is not limited thereto.

[0060] In another embodiment, virtual touch electrode lines 106 similar to the aforementioned first drive signal lines 1061, second drive signal lines 1062, and control signal lines 1063 may also be provided in the second display area AA2 and / or the third display area AA3, and the first touch drive signal TP1, the second touch drive signal TP2, and the touch control signal TPSW are received from the drive circuit 103 via these virtual touch electrode lines 106 and transmitted to the third switch group, the fourth switch group, and / or the fifth switch group, and the sixth switch group, so that the touch electrodes TP in the second display area AA2 and / or the third display area AA3 can smoothly receive the corresponding signals. In this way, the signal leads 107 of the third peripheral area and / or the fourth peripheral area can be omitted, and the size of the peripheral area BA can be further reduced, ensuring the display quality while catering to the trend of narrow frame.

[0061] like Figure 1 As shown, the control ends of the multiple first switch elements SW1 and the multiple second switch elements SW2 of each switch group are connected to the same signal line, the first ends of the multiple first switch elements SW1 included in the first switch group, the third switch group and the fifth switch group are connected to the same signal line, and the first ends of the multiple second switch elements SW2 included in the second switch group, the fourth switch group and the sixth switch group are connected to the same signal line. In this embodiment, each signal line is a continuous structure. In the process of manufacturing the opening area by grinding or laser, the aforementioned signal line may be disconnected at the turning points at both ends of the opening area 108. Since a special signal transmission path is set in the first display area AA1 corresponding to the opening area 108 in the present invention, even if the signal line is disconnected at the turning point, the signal transmission can still be completed through the first drive signal line 1061, the second drive signal line 1062, the control signal line 1063, the first switch group and the second switch group, thereby ensuring the display quality. In another embodiment, since a dedicated signal transmission path is set in the first display area AA1 corresponding to the opening area 108 in the present invention, the signal lines connected to the control ends and the first ends of the first switch group and the second switch group can also be disconnected from the signal lines connected to the control ends and the first ends of the switch groups in the second display area AA2 and / or the third display area AA3.

[0062] like Figure 1 As shown, each touch electrode line 105 is also electrically connected to the driving circuit 103, and the driving circuit 103 can be used to cooperate with the switch circuit 104 to provide corresponding signals from both ends of each touch electrode line 105, so as to facilitate the display uniformity of each area of ​​the touch display panel 100. In addition, the driving circuit 103 is also used for detecting the touch position.

[0063] In one embodiment, one of two adjacent touch electrodes TP in the touch electrode array receives the first touch driving signal TP1, and the other receives the second touch driving signal TP2. Figure 1 As shown, taking the top two touch electrodes TP in the leftmost column as an example, for the touch electrodes TP in the same column, the two adjacent touch electrodes TP are respectively electrically connected to two different touch electrode lines 105, and the two different touch electrode lines 105 are respectively electrically connected to the second ends of the first switch element SW1 and the second switch element SW2. Taking the leftmost two touch electrodes TP in the topmost row as an example, for the touch electrodes TP in the same row, the two adjacent touch electrodes TP are respectively electrically connected to two different touch electrode lines 105, and the two different touch electrode lines 105 are respectively electrically connected to the second ends of the first switch element SW1 and the second switch element SW2. Therefore, among any two adjacent touch electrodes TP in the touch electrode array 102, one touch electrode TP receives the first touch driving signal TP1, and the other touch electrode TP receives the second touch driving signal TP2. In other words, the two adjacent touch electrodes TP receive different touch driving signals. In the present invention, the touch electrodes TP electrically connected to the first switch element SW1 are defined as first-type touch electrodes, and the touch electrodes TP electrically connected to the second switch element SW2 are defined as second-type touch electrodes. The first-type touch electrodes receive the first touch driving signal TP1, and the second-type touch electrodes receive the second touch driving signal TP2.

[0064] In the present invention, in the test phase, generally, the driving circuit 103 is not assembled at this time, and the first touch driving signal TP1 and the second touch driving signal TP2 can be provided by an external detection device (not shown) (or the driving circuit 103 has been assembled, and the first touch driving signal TP1 and the second touch driving signal TP2 are provided by the driving circuit 103), and the first touch driving signal TP1 and the second touch driving signal TP2 provided to the touch display panel 100 are different. For example, the first touch driving signal TP1 is, for example, a low level (0V), and the second touch driving signal TP2 is, for example, a high level (5.2V). In this way, under the drive of the first touch driving signal TP1 and the second touch driving signal TP2, the display areas corresponding to the two adjacent touch electrodes TP display white or black respectively, and the touch display panel 100 as a whole presents a black and white grid display pattern, which can be used to detect whether the touch electrode TP is defective or disconnected. During normal use, generally, the touch display panel 100 is assembled with a driving circuit 103, and the driving circuit 103 provides a first touch driving signal TP1 and a second touch driving signal TP2, and the first touch driving signal TP1 and the second touch driving signal TP2 provided to the touch display panel 100 are the same, for example, both are a common voltage (COM).

[0065] During normal use, the touch control signal TPSW transmitted by the control signal line 1063 in the touch display panel 100 of the present invention is at a high level (generally not less than 10V, such as 10V, 15V, etc.). In order to prevent the high-level touch control signal TPSW from affecting the signals of other layers, it needs to be shielded.

[0066] When the touch display panel 100 of the present invention is in normal use, the touch electrodes TP are electrically connected to the common voltage (COM), the first driving signal line 1061 and the second driving signal line 1062 are also electrically connected to the common voltage (COM), and the control signal line 1063 is electrically connected to the high level touch control signal TPSW. Figure 3 , Figure 3 FIG. 1 is a schematic diagram of a partial structure of a touch display panel according to an embodiment of the present invention. Figure 3 As shown, in one embodiment, the virtual touch electrode line 106 is a metal line located in the metal patterned layer. The touch electrode TP is a transparent conductive layer (such as ITO), and the layer where the touch electrode TP is located is located above the layer where the virtual touch electrode line 106 is located ( Figure 3 At this time, the area of ​​the layer where the touch electrode TP is located corresponding to the control signal line 1063 needs to be set to cover the control signal line 1063, so as to use the common voltage (COM) to shield the touch control signal TPSW to avoid interfering with the signals transmitted by other layers.

[0067] Figure 4A is a schematic diagram of the arrangement of virtual touch electrode lines according to an embodiment of the present invention, Figure 4B is a schematic diagram of the arrangement of virtual touch electrode lines according to another embodiment of the present invention, Figure 4C FIG. 1 is a schematic diagram of the arrangement of virtual touch electrode lines according to another embodiment of the present invention. Figure 4A-4C As shown, an opening area 108 is formed in the touch display panel 100, and the display area AA corresponding to the opening area 108 (i.e., the first display area AA1, the same below) can be roughly divided into three parts, a first side portion of the display area AA corresponding to the left side of the opening 108, a middle portion of the display area AA corresponding to the middle portion of the opening 108, and a second side portion of the display area AA corresponding to the right side of the opening 108. The first drive signal line 1061, the second drive signal line 1062, and the control signal line 1063 can all be arranged on the first side portion, the middle portion, or the second side portion; or, the first drive signal line 1061, the second drive signal line 1062, and the control signal line 1063 are arranged on at least two of the first side portion, the middle portion, and the second side portion.

[0068] like Figure 4A As shown, the first driving signal line 1061, the second driving signal line 1062 and the control signal line 1063 are all disposed on the first side of the display area AA. Figure 4B As shown, the first driving signal line 1061, the second driving signal line 1062 and the control signal line 1063 are all disposed in the middle of the display area AA. Figure 4C As shown, the first driving signal line 1061 and the second driving signal line 1062 are arranged in the middle of the display area AA, and the control signal line 1063 is arranged in the second side of the display area AA. Figures 4A-4C The arrangement of the dummy touch electrode lines is shown only as an example. Depending on the number and connection method of the dummy touch electrode lines, there may be other connection methods. For example, the first drive signal line 1061, the second drive signal line 1062 and the control signal line 1063 are all arranged on the second side, or the first drive signal line 1061, the second drive signal line 1062 and the control signal line 1063 are respectively arranged on the first side, the middle and the second side, or two of the first drive signal line 1061, the second drive signal line 1062 and the control signal line 1063 are arranged on one side or the middle, and the other is arranged in other areas of the display area. The present invention is not limited to this.

[0069] The present invention further provides a display device, comprising any one of the touch display panels described above.

[0070] According to an embodiment of the present invention, by setting a dummy touch electrode line in the display area, and transmitting at least one touch signal of the driving circuit to the switch circuit through the dummy touch electrode line, the peripheral area is not occupied and the transmission path is short, the reduction of the size of the peripheral area is utilized and the signal transmission efficiency and quality are guaranteed. Furthermore, the switch circuit sets a separate signal transmission path corresponding to the opening area of ​​the touch display panel, which can avoid the display device (especially the display device of the same series, different opening sizes, and sharing part of the mask) from being affected by the disconnection of the line during the grinding or laser opening area, thereby ensuring the quality of the touch display panel. In addition, by using the dummy touch electrode line that covers the touch control signal transmitted by the touch electrode layer, the touch control signal can be shielded to avoid interference with the signals transmitted by other layers, further improving the display quality of the display panel.

[0071] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A touch display panel, characterized in that: include: A substrate having a display area and a peripheral area adjacent to each other, wherein the peripheral area has a first peripheral area and a second peripheral area opposite to the display area; A touch electrode array, disposed on the substrate; a driving circuit, disposed in the first peripheral area; a switch circuit, disposed in the second peripheral area; A plurality of touch electrode lines, each of the touch electrode lines being electrically connected to the switch circuit and one of the touch electrodes; A plurality of dummy touch electrode lines are arranged in the display area; in At least one of the plurality of dummy touch electrode lines is electrically connected to the driving circuit and the switch circuit, and is used to provide at least one touch signal to the switch circuit; In which, the touch display panel has an opening area, and the display area corresponding to the opening area in the display area is defined as a first display area. The multiple virtual touch electrode lines further include a control signal line, a first drive signal line and a second drive signal line. The first drive signal line, the second drive signal line and the control signal line are located in the first display area, and each virtual touch electrode line is not connected to each touch electrode.

2. The touch display panel according to claim 1, wherein: The touch signal further includes a touch control signal, a first touch driving signal and a second touch driving signal; The control signal line is used to transmit the touch control signal, the first drive signal line is used to transmit the first touch drive signal, and the second drive signal line is used to transmit the second touch drive signal.

3. The touch display panel according to claim 2, wherein: One of two adjacent touch electrodes in the touch electrode array receives the first touch driving signal, and the other one receives the second touch driving signal.

4. The touch display panel according to claim 3, wherein: When the touch display panel is in a testing phase, the first touch driving signal is different from the second touch driving signal; when the touch display panel is in a normal use phase, the first touch driving signal is the same as the second touch driving signal.

5. The touch display panel according to claim 3, wherein: The touch electrode array includes a first type of touch electrodes and a second type of touch electrodes, the switch circuit further includes a first switch group and a second switch group, the first drive signal line is electrically connected to the first switch group to be electrically connected to the first type of touch electrodes, the second drive signal line is electrically connected to the second switch group to be electrically connected to the second type of touch electrodes, and the control signal line is electrically connected to the first switch group and the second switch group.

6. The touch display panel according to claim 5, wherein: The first switch group and the second switch group respectively include a plurality of switch elements, each of which has a first end, a second end, and a control end. The first drive signal line is electrically connected to the first end of the switch element in the first switch group, the second drive signal line is electrically connected to the first end of the switch element in the second switch group, and the control signal line is electrically connected to the control end of the switch element.

7. The touch display panel according to claim 6, wherein: The touch electrode line is electrically connected to the second end of the switch element.

8. The touch display panel according to claim 1, wherein: The projection of the layer where the touch electrode array is located on the substrate covers the projection of the control signal line.

9. The touch display panel according to claim 1, wherein: The peripheral area also has a third peripheral area and a fourth peripheral area arranged relative to the display area. The touch display panel also includes a plurality of signal leads, which are connected to the driving circuit and extend from the third peripheral area and the fourth peripheral area to electrically connect to part of the switching circuit.

10. The touch display panel according to claim 5, wherein: The first switch group and the second switch group are arranged corresponding to the opening area.

11. The touch display panel according to claim 10, wherein: The display area corresponding to the opening area in the display area has a first side portion, a middle portion and a second side portion; The control signal line, the first drive signal line and the second drive signal line are all arranged on the first side portion, the middle portion or the second side portion; or, The control signal line, the first driving signal line, and the second driving signal line are disposed on at least two of the first side portion, the middle portion, and the second side portion.

12. The touch display panel according to claim 5, wherein: The display area also includes a second display area located on one side of the first display area, and the switch circuit further includes a third switch group and a fourth switch group, which are arranged corresponding to the second display area and are used to receive at least one touch signal and transmit it to the touch electrodes in the second display area.

13. The touch display panel according to claim 12, wherein: The third switch group and the fourth switch group respectively include a plurality of switch elements, each of which has a first end. The first end of the switch element in the third switch group receives the first touch drive signal, and the first end of the switch element in the fourth switch group receives the second touch drive signal.

14. The touch display panel according to claim 12, wherein: At least one other dummy touch electrode line among the plurality of dummy touch electrode lines is electrically connected to the driving circuit and the third switch group and the fourth switch group, and is used to provide at least one touch signal to the third switch group and the fourth switch group.

15. A display device, characterized in that: include: A touch display panel as claimed in any one of claims 1 to 14.

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