Display panel, control method thereof and display device

Abstract

The invention provides a display panel, a control method thereof and a display device, and relates to the technical field of display. A conventional array MUX test circuit of the display panel is multiplexed, the array MUX test circuit is improved, a second switch is connected in series on a connection path of at least one first bonding pad and a first switch in a target unit, and then one end of a touch signal line is electrically connected with a first end of the first switch on the connection path connected in series with the second switch. When the display panel achieves a touch function, the second switches are controlled to be in an off state, the data signal lines are short-circuited, and then the driving chip sends touch signals to the touch signal lines based on the array MUX test circuit to achieve the touch function. In addition, the narrow frame design of the display panel is facilitated under the condition that an MUX circuit is not newly added.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a control method thereof, and a display device. Background Art

[0002] Narrow-border display panels have become one of the development trends of high-end display panels due to their simplicity, beauty, and high screen-to-body ratio. At present, the development of narrow-border technology has reached a bottleneck, and it has become particularly difficult to further reduce the border of display panels and improve product specifications. In the lower border of the display panel, the height of the fanout area (also known as the fan-out area) cannot be ignored, which has become one of the difficult factors restricting the realization of narrow-border display panels. Summary of the invention

[0003] In view of the above problems, the present application provides a display panel and a control method thereof, and a display device to achieve the purpose of narrow frame design. The specific solution is as follows:

[0004] A first aspect of the present application provides a display panel, the display panel comprising: an array MUX test circuit, a driving chip, a data signal line, and a touch signal line;

[0005] The array MUX test circuit includes a plurality of first pads, a plurality of second pads, a plurality of first switches and N clock signal input terminals; N≥2, and N is a positive integer;

[0006] N first pads, N first switches and one second pad form a target unit; the N first pads in the target unit are electrically connected to the first ends of the N first switches in a one-to-one correspondence, and the second ends of the N first switches are electrically connected to one second pad; the control ends of the N first switches are electrically connected to the N clock signal input ends in a one-to-one correspondence;

[0007] One end of the data signal line is electrically connected to the first pad, and the other end extends toward the display area of ​​the display panel;

[0008] The display panel further includes: a plurality of second switches; a second switch is connected in series on a connection path between at least one of the first pads in the target unit and the first switch, and one end of the touch signal line is electrically connected to a first end of the first switch on the target connection path; the target connection path is at least one connection path among the connection paths in the target unit connected in series with the second switch;

[0009] The other end of the touch signal line extends toward the display area of ​​the display panel and is electrically connected to the touch electrode block;

[0010] The driving chip is electrically connected to the array MUX test circuit through the second pad; in the touch driving mode of the display panel, the plurality of second switches are in an off state, and the driving chip sends a touch signal to the touch signal line.

[0011] A second aspect of the present application provides a method for controlling a display panel. Based on the above-mentioned display panel, the method for controlling the display panel includes:

[0012] In a touch driving mode of the display panel, controlling the plurality of second switches to be in an off state;

[0013] The control driving chip sends a touch signal to the touch signal line.

[0014] A third aspect of the present application provides a display device, which includes the display panel described above.

[0015] By means of the above technical solution, the present application provides a display panel and a control method thereof, and a display device, which reuses the conventional array MUX test circuit of the display panel and improves the array MUX test circuit so that a second switch is connected in series on the connection path between at least one first pad in the target unit and the first switch, and then one end of the touch signal line is electrically connected to the first end of the first switch on the connection path connected in series with the second switch. When the display panel implements the touch function, the multiple second switches are controlled to be in an off state, the data signal line is short-circuited, and then the driver chip sends a touch signal to the touch signal line based on the array MUX test circuit to implement the touch function. In addition, the present application is conducive to the narrow frame design of the display panel without adding a new MUX circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0017] Figure 1 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the structure of a fan-out area of ​​a display panel provided by an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of the structure of an array MUX test circuit provided by an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the structure of another array MUX test circuit provided by an embodiment of the present invention;

[0021] Figure 5 A structural schematic diagram of another array MUX test circuit provided by an embodiment of the present invention;

[0022] Figure 6 A structural schematic diagram of another array MUX test circuit provided by an embodiment of the present invention;

[0023] Figure 7 A structural schematic diagram of another array MUX test circuit provided by an embodiment of the present invention;

[0024] Figure 8 A structural schematic diagram of another array MUX test circuit provided by an embodiment of the present invention;

[0025] Fig. 9 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0026] Fig.10 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0027] Fig.11 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0028] Fig.12 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0029] Fig.13 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0030] Fig.14 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0031] Fig.15 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0032] Fig.16 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0033] Fig.17 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0034] Fig.18 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0035] Fig.19 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0036] Fig. 20 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0037] Fig.21 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention;

[0038] Fig. 22 A schematic flow chart of a method for controlling a display panel provided by an embodiment of the present invention;

[0039] Fig.23 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation mode of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. It is known to those skilled in the art that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] It should be noted that the directional words appearing in the present invention are based on the relative position relationship shown in the drawings and cannot be used as an absolute limitation to the present application.

[0043] refer to Figure 1 , Figure 1 A schematic diagram of a display panel according to an embodiment of the present invention; Figure 2 , Figure 2 A schematic diagram of a fan-out region of a display panel provided by an embodiment of the present invention; Figure 3 , Figure 3 The display panel 100 provided by the embodiment of the present invention comprises a display area AA and a frame area BB at least partially surrounding the display area AA. In the embodiment of the present invention, the frame area BB fully surrounding the display area AA is used as an example for explanation.

[0044] The lower border area of ​​the border area BB includes the fan-out area, such as Figure 2 As shown, the fan-out region within the field is sometimes also called the step region.

[0045] like Figure 2As shown, the display panel 100 provided by the embodiment of the present invention further includes an array MUX test circuit 11, a driver chip IC, a data signal line L and a touch signal line T. The array MUX test circuit 11 and the driver chip IC are arranged in the fan-out area.

[0046] In the embodiment of the present invention, the driver chip IC is described by taking a driver chip integrating touch control and display as an example. Among them, MUX refers to a multiplexer, which is called Multiplexer in English.

[0047] The array MUX test circuit 11 includes a plurality of first pads S, a plurality of second pads A, a plurality of first switches K1 and N clock signal input terminals; N≥2, and N is a positive integer. Figure 2 As shown, N=4 is taken as an example for description, that is, it includes a clock signal input terminal CKH1, a clock signal input terminal CKH2, a clock signal input terminal CKH3 and a clock signal input terminal CKH4.

[0048] like Figure 2 As shown, the multiple first pads S are illustrated by taking the first first pad S1, the second first pad S2, the third first pad S3 and the fourth first pad S4 as an example; the multiple second pads A are illustrated by taking the first second pad A1, the second second pad A2, the third second pad A3 and the fourth second pad A4 as an example.

[0049] N first pads S, N first switches K1 and one second pad A constitute a target unit 12. Figure 3 As shown, N=4 is taken as an example for description, that is, one target unit 12 includes four first pads S, four first switches K1 and one second pad A.

[0050] The N first pads S in the target unit 12 are electrically connected to the first ends of the N first switches K1 in a one-to-one correspondence, and the second ends of the N first switches K1 are electrically connected to a second pad A; the control ends of the N first switches K1 are electrically connected to the N clock signal input ends in a one-to-one correspondence.

[0051] Among them, Figure 2 and Figure 3 As shown, one end of the data signal line L is electrically connected to the first pad S, and the other end extends to the display area AA of the display panel 100 .

[0052] like Figure 3As shown, the display panel 100 provided in the embodiment of the present invention also includes: a plurality of second switches K2; a second switch K2 is connected in series on a connection path between at least one first pad S in the target unit 12 and the first switch K1, and one end of the touch signal line T is electrically connected to a first end of the first switch K1 on the target connection path; the target connection path is at least one connection path among the connection paths in the target unit 12 that are connected in series with the second switch K2.

[0053] Among them, Figure 2 and Figure 3 As shown, the other end of the touch signal line T extends toward the display area AA of the display panel 100 and is electrically connected to the touch electrode block. It should be noted that the touch electrode block is not illustrated in the embodiment of the present invention. It is understandable that one touch electrode block corresponds to one touch signal line T.

[0054] like Figure 2 As shown, the driver chip IC is electrically connected to the array MUX test circuit 11 through the second pad A; in the touch driving mode of the display panel 100, the plurality of second switches K2 are in the disconnected state, and the driver chip IC sends a touch signal to the touch signal line T. Figure 2 As shown, the second pad A is connected to the pad C on the driver chip IC, thereby realizing the electrical connection between the driver chip IC and the array MUX test circuit 11 .

[0055] It should be noted that, in an optional embodiment of the present invention, the first switch K1 and the second switch K2 are both PMOS transistors for explanation, that is, in the touch driving mode of the display panel 100, the control signal SW is a high-level signal, and the plurality of second switches K2 are controlled to be in a disconnected state. At this time, the data signal line L is short-circuited, and the driver chip IC sends a touch signal to the touch signal line T.

[0056] It should be further explained that the clock signals received by the N clock signal input terminals are high-level signals or low-level signals with different timings, so as to control the conduction states of the first switches K1 on different connection links.

[0057] like Figure 3 As shown, a second switch K2 is connected in series on a connection path between each first pad S and the first switch K1 in the target unit 12. Each of the target connection paths is connected to a corresponding touch signal line T.

[0058] Specifically, for a display panel 100 including a self-capacitive touch function, a touch signal line T corresponding to a touch electrode block in the display panel 100 can be understood as a self-capacitive TP (Touch Panel) signal channel. The applicant found that for the large-size display panel with many self-capacitive TP signal channels, the driver chip IC does not have space to add a lot of pads C to achieve the connection with the touch signal line T. Therefore, in the prior art, a large-size display panel with a self-capacitive touch function will adopt a MUX circuit design to achieve the touch function. Although the number of pads C in the driver chip IC is reduced to a certain extent, the newly designed MUX circuit will occupy the border area BB of the display panel 100. Usually, the MUX circuit will be set in the fan-out area, so it will occupy a certain space in the fan-out area, which seriously affects the narrow border design of the display panel 100.

[0059] During the preparation process of the array substrate in the display panel 100, the array MUX test circuit 11 in the fan-out area is also prepared, and the data signal line L is also prepared. The data signal line L is electrically connected to the array MUX test circuit 11. Before evaporating the pixel, a line defect test will be performed based on the array MUX test circuit 11. At this time, the driver chip IC has not been set up, and the touch signal line T has not been prepared.

[0060] After the test is completed, the array MUX test circuit 11 will no longer work, and then the driver chip IC binding, pixel evaporation, TFE packaging (Thin Film Encapsulation) and TP process and other processes will be carried out. The array substrate is also called TFT (Thin Film Transistor) substrate in the field. Touch components such as touch signal lines T will be formed in the TP process.

[0061] Since the TP process is after TFE packaging, the technical solution of the present application reuses the conventional array MUX test circuit of the display panel 100, and improves the array MUX test circuit during the preparation process of the array MUX test circuit, so that at least one first pad S in the target unit 12 is connected in series with a second switch K2 on the connection path of the first switch K1, forming the array MUX test circuit 11 of the technical solution of the present application; then in the TP process, one end of the touch signal line T is electrically connected to the first end of the first switch K1 on the connection path connected in series with the second switch K2. When the display panel 100 implements the touch function, the multiple second switches K2 are controlled to be in the disconnected state, and the data signal line L is short-circuited. Then the driver chip IC sends a touch signal to the touch signal line T based on the array MUX test circuit 11 to implement the touch function. Since the data signal line L connected to the array MUX test circuit 11 is short-circuited by the second switch K2 in the touch driving mode of the display panel 100, this design will not affect the normal display of the display panel 100.

[0062] From the above description, it can be seen that the technical solution of the present application reuses the array MUX test circuit in the display panel 100 and improves it so that a large-size display panel with a self-capacitive touch function can realize the touch function, which is beneficial to the narrow frame design of the display panel 100 without adding a new MUX circuit.

[0063] Furthermore, since the touch signal line T has not been electrically connected to the array MUX test circuit 11 during the line defect test phase, the improved array MUX test circuit 11 only adds one control to the second switch K2 compared to the conventional array MUX test circuit. For example, the second switch K2 is turned on during the line defect test phase, thereby realizing normal line defect testing.

[0064] In an optional embodiment of the present invention, reference Figure 4 , Figure 4 A schematic diagram of another array MUX test circuit provided by an embodiment of the present invention; Figure 5 , Figure 5 A structural diagram of another array MUX test circuit provided by an embodiment of the present invention is shown in FIG.

[0065] Specifically, in the embodiments of the present invention, Figure 4 As shown, a target connection path in the target unit 12 is connected to a touch signal line T after a target connection path is separated; Figure 5 As shown, a target connection path after two target connection paths in the target unit 12 is connected to a touch signal line T correspondingly.

[0066] Since the number of data signal lines L in the display panel 100 is much larger than the number of touch signal lines T, the connection modes of the touch signal lines T and the array MUX test circuit 11 are diversified. In the embodiment of the present invention, a target connection path separated by at least one target connection path in the target unit 12 is connected to a corresponding touch signal line T, so that the distance between two adjacent touch signal lines T can be relatively long, thereby reducing the signal interference of adjacent touch signal lines T and improving the signal quality of the signal transmitted by each touch signal line T.

[0067] In an optional embodiment of the present invention, reference Figure 6 , Figure 6 A schematic diagram of the structure of another array MUX test circuit provided by an embodiment of the present invention; Figure 7 , Figure 7 A schematic diagram of the structure of another array MUX test circuit provided by an embodiment of the present invention: A second switch K2 is connected in series on a connection path after at least one connection path in a target unit 12 .

[0068] Specifically, in the embodiment of the present invention, since the number of data signal lines L in the display panel 100 is much larger than the number of touch signal lines T, the connection modes of the touch signal lines T and the array MUX test circuit 11 are diversified. That is to say, not all connection paths need to be connected in series with the second switch K2. Figure 6 As shown, a second switch K2 is connected in series on the connection path after a connection path in the target unit 12; Figure 7 As shown, a second switch K2 is connected in series on the connection path after two connection paths in the target unit 12. Further, as Figure 6 and Figure 7 As shown, each of the target connection paths is correspondingly connected to one of the touch signal lines T.

[0069] Comparison Figure 4 and Figure 6 For the structure shown, each target unit 12 can save two second switches K2; Figure 5 and Figure 7 As for the structure shown, each target unit 12 can also save two second switches K2, thereby achieving the purpose of simplifying the circuit and reducing the cost.

[0070] In an optional embodiment of the present invention, reference Figure 8 , Figure 8 Schematic diagram of another array MUX test circuit provided in an embodiment of the present invention. The number of touch signal lines T connected to each target unit 12 is different. Specifically, in an embodiment of the present invention, Figure 8As shown, from left to right, one touch signal line T is connected to the first target unit 12 , two touch signal lines T are connected to the second target unit 12 , and three touch signal lines T are connected to the third target unit 12 .

[0071] In other words, in the technical solution of the present application, the connection relationship between the touch signal line T and the array MUX test circuit 11 is varied, and can be reasonably determined based on the position of the touch electrode block corresponding to each touch signal line T, or by considering other routing factors, and is not limited in the embodiments of the present invention.

[0072] In an optional embodiment of the present invention, Figure 2-Figure 8 As shown, the first pad S is electrically connected to the first end of the first switch K1 through a first signal line M.

[0073] One end of the touch signal line T is short-circuited with the first signal line M.

[0074] Specifically, in an embodiment of the present invention, the first signal line M can be set on one side of the array film layer, and the touch signal line T can be set on one side of the TP film layer. The touch signal line T can be short-circuited with the first signal line M by means of a film layer via, thereby realizing the connection between the touch signal line T and the array MUX test circuit 11.

[0075] In an optional embodiment of the present invention, reference Fig. 9 , Fig. 9 A schematic diagram of another structure of a fan-out region of a display panel provided by an embodiment of the present invention: The touch signal line T is located between two adjacent first pads S.

[0076] Specifically, in the embodiment of the present invention, the spacing area between two adjacent first pads S is reasonably utilized to route the touch signal line T through the spacing area between two adjacent first pads S without adding additional wiring space, thereby simplifying the wiring method of the touch signal line T and simplifying the connection method between the touch signal line T and the array MUX test circuit 11.

[0077] In an optional embodiment of the present invention, reference Fig.10 , Fig.10 A schematic diagram of a fan-out region of another display panel provided in an embodiment of the present invention; Fig.11 , Fig.11 A schematic diagram of a fan-out region of another display panel provided by an embodiment of the present invention: The number of touch signal lines between two adjacent first pads is H1, and the number of touch signal lines between two adjacent first pads is H2.

[0078] Among them, H1≠H2.

[0079] Specifically, in the embodiments of the present invention, Fig.10 As shown, there is no touch signal line T between the first first pad S1 and the second first pad S2, two touch signal lines T are set between the second first pad S2 and the third first pad S3, and one touch signal line T is set between the third first pad S3 and the fourth first pad S4. Fig.11 As shown, a touch signal line T is arranged between the first first pad S1 and the second first pad S2, two touch signal lines T are arranged between the second first pad S2 and the third first pad S3, and one touch signal line T is arranged between the third first pad S3 and the fourth first pad S4.

[0080] There may be other signal lines in the space between two adjacent first pads S. In the embodiment of the present invention, the number of touch signal lines T between the two adjacent first pads S can be reasonably set based on the number of other signal lines in the space between the two adjacent first pads S. This simplifies the wiring of the touch signal lines T and reduces signal interference between the touch signal lines T and other signal lines.

[0081] like Fig.10 As shown, when the number of other signal lines between the first first pad S1 and the second first pad S2 is large, it is obvious that the touch signal line T may not be disposed between the first first pad S1 and the second first pad S2.

[0082] In an optional embodiment of the present invention, reference Fig.12 , Fig.12 A schematic diagram of a fan-out region of another display panel provided in an embodiment of the present invention; Fig.13 , Fig.13 A schematic diagram of the structure of another display panel fan-out region provided by an embodiment of the present invention: The array MUX test circuit 11 includes a plurality of third pads D, and the plurality of third pads D and the plurality of first pads S are located on the same side.

[0083] The plurality of third pads D are in an electrically disconnected state.

[0084] like Fig.13 As shown, the touch signal line T is located between two adjacent third pads D.

[0085] It should be noted that if Fig.12 and Fig.13 As shown, the third pad D includes a first third pad D1, a second third pad D2, a third third pad D3 and a fourth third pad D4.

[0086] Specifically, in the embodiments of the present invention, Fig.12 As shown, the array MUX test circuit 11 includes a plurality of third pads D, and the touch signal line T is located between two adjacent first pads S; Fig.13 As shown, the array MUX test circuit 11 includes a plurality of third pads D, and the touch signal line T is located between two adjacent third pads D.

[0087] After the array MUX test circuit 11 is electrically connected to the data signal line L, a portion of the third pads D that are not connected to the data signal line L will remain, and at this time, there is no wiring of the data signal line L in the area where the third pads D are located. Therefore, in the embodiment of the present invention, the touch signal line T is arranged between two adjacent third pads D to achieve the purpose of being away from the data signal line L, reduce the signal interference problem between the data signal line L and the touch signal line D, and further simplify the wiring method of the touch signal line T, and simplify the connection method of the touch signal line T and the array MUX test circuit 11.

[0088] In an optional embodiment of the present invention, reference Fig.14 , Fig.14 A schematic diagram of a fan-out region of another display panel provided in an embodiment of the present invention; Fig.15 , Fig.15 A schematic diagram of another structure of a fan-out region of a display panel provided by an embodiment of the present invention: The number of touch signal lines T between two adjacent third pads D is Y1, and the number of touch signal lines T between two adjacent third pads D is Y2.

[0089] Among them, Y1≠Y2.

[0090] Specifically, in the embodiments of the present invention, Fig.14 As shown, there is no touch signal line T between the first third pad D1 and the second third pad D2, two touch signal lines T are set between the second third pad D2 and the third third pad D3, and one touch signal line T is set between the third third pad D3 and the fourth third pad D4. Fig.15 As shown, a touch signal line T is arranged between the first third pad D1 and the second third pad D2, two touch signal lines T are arranged between the second third pad D2 and the third third pad D3, and one touch signal line T is arranged between the third third pad D3 and the fourth third pad D4.

[0091] There may be other signal lines in the space between two adjacent third pads D. In the embodiment of the present invention, the number of touch signal lines T between the two adjacent third pads D can be reasonably set based on the number of other signal lines in the space between the two adjacent third pads D. In this way, the wiring method of the touch signal lines T is simplified, and the signal interference between the touch signal lines T and other signal lines can also be reduced.

[0092] like Fig.14 As shown, when the number of other signal lines between the first third pad D1 and the second third pad D2 is large, it is obvious that the touch signal line T may not be disposed between the first third pad D1 and the second third pad D2.

[0093] In an optional embodiment of the present invention, reference Fig.16 , Fig.16 A schematic diagram of a fan-out region of another display panel provided by an embodiment of the present invention: a portion of the touch signal line T is located between two adjacent first pads S, and a portion of the touch signal line T is located between two adjacent third pads D.

[0094] Specifically, in the embodiment of the present invention, if the touch signal lines T are all located between two adjacent first pads S, that is, when the touch signal lines T are located in the area where the first pads S are located, the wiring difficulty of the touch signal lines T and the touch electrode blocks in the right display area AA will increase; if the touch signal lines T are all located between two adjacent third pads D, that is, when the touch signal lines T are located in the area where the third pads D are located, the wiring difficulty of the touch signal lines T and the touch electrode blocks in the left display area AA will increase.

[0095] Therefore, in the embodiment of the present invention, a part of the touch signal line T is located between two adjacent first pads S, and a part of the touch signal line T is located between two adjacent third pads D, which can reduce the wiring difficulty between the touch signal line T and all touch electrode blocks. For example, the touch signal line T located in the area where the first pad S is located is connected to the touch electrode block in the left display area AA, the touch signal line T located in the area where the third pad D is located is connected to the touch electrode block in the right display area AA, and the touch signal line T located in the middle part is connected to the touch electrode block in the middle display area AA, thereby greatly reducing the wiring difficulty between the touch signal line T and the touch electrode block.

[0096] In an optional embodiment of the present invention, reference Fig.17 , Fig.17 A schematic diagram of another structure of a fan-out region of a display panel provided by an embodiment of the present invention: The number of touch signal lines T located between two adjacent first pads S is W1, and the number of touch signal lines T located between two adjacent third pads D is W2.

[0097] Among them, W1≠W2.

[0098] Specifically, in the embodiments of the present invention, Fig.17 As shown, a touch signal line T is arranged between the first first pad S1 and the second first pad S2, a touch signal line T is arranged between the second first pad S2 and the third first pad S3, and a touch signal line T is arranged between the third first pad S3 and the fourth first pad S4; a touch signal line T is arranged between the first third pad D1 and the second third pad D2, two touch signal lines T are arranged between the second third pad D2 and the third third pad D3, and a touch signal line T is arranged between the third third pad D3 and the fourth third pad D4.

[0099] That is to say, when the touch signal line T is distributed in the area where the first pad S and the area where the third pad D are located, the wiring method of the touch signal line T can also be flexibly set. This is not limited in the embodiment of the present invention, and all wiring methods are aimed at simplifying the wiring difficulty.

[0100] In an optional embodiment of the present invention, reference Fig.18 , Fig.18 A schematic diagram of a fan-out region of another display panel provided by an embodiment of the present invention, referring to Fig.19 , Fig.19 A schematic diagram of a fan-out region of another display panel provided by an embodiment of the present invention: the third pad D is located in the first film layer, the touch signal line T is located in the second film layer, and the first film layer and the second film layer are different layers.

[0101] The orthographic projection of the touch signal line T on the plane where the display panel 100 is located overlaps with the orthographic projection of the third pad D on the plane where the display panel 100 is located.

[0102] Specifically, in the embodiments of the present invention, Fig.18 As shown, by running the touch signal line T on the bottom layer of the third pad D, the influence of the third pad D on the wiring of the touch signal line T is reduced, the wiring difficulty of the touch signal line T is reduced, and the touch signal line T is set on a different layer from the third pad D, which can increase the number of touch signal lines T that can be set in the area where the third pad D is located.

[0103] Further, such as Fig.19 As shown, the touch signal line T in the area where the third pad D is located is partially located between two adjacent third pads D, and partially routed from the bottom layer of the third pad D. When the connection with the array MUX test circuit 11 is realized, the number of touch signal lines T that can be set in the area where the third pad D is located is further increased.

[0104] In an optional embodiment of the present invention, reference Fig. 20 , Fig. 20 A schematic diagram of the structure of another display panel fan-out area provided by an embodiment of the present invention.

[0105] The third pad D is connected to the touch signal line T in series.

[0106] Specifically, in the embodiment of the present invention, after the array MUX test circuit 11 is electrically connected to the data signal line L, a portion of the third pad D that is not connected to the data signal line L will remain, and at this time, there is no wiring of the data signal line L in the area where the third pad D is located. Therefore, in the embodiment of the present invention, the third pad D is connected in series to the touch signal line T, which is equivalent to utilizing the third pad D, so that the third pad D is used as a part of the touch signal line T and also has the function of signal transmission, and can further simplify the wiring method of the touch signal line T, and simplify the connection method of the touch signal line T and the array MUX test circuit 11.

[0107] In some other optional embodiments, reference Fig.21 , Fig.21 A schematic diagram of the structure of another display panel fan-out region provided by an embodiment of the present invention. Part of the touch signal line T in the area where the third pad D is located is located between two adjacent third pads D, part of it is routed from the bottom layer of the third pad D, and part of the third pad D is connected in series to the touch signal line T. When the connection with the array MUX test circuit 11 is realized, the number of touch signal lines T that can be set in the area where the third pad D is located is further increased.

[0108] Obviously, there are some other variations on the position of the touch signal line T, which will not be listed here one by one.

[0109] Based on the above embodiment of the present invention, another embodiment of the present invention further provides a method for controlling a display panel. Fig. 22 , Fig. 22 A flow chart of a method for controlling a display panel provided in an embodiment of the present invention. The method for controlling a display panel is based on the display panel 100 described in the above embodiment, and the method for controlling a display panel includes:

[0110] S101: In the touch driving mode of the display panel 100, a plurality of second switches K2 are controlled to be in an off state.

[0111] S102: Control the driving chip IC to send a touch signal to the touch signal line T.

[0112] Based on the above embodiments of the present invention, accordingly, the embodiments of the present application further provide a display device, referring to Fig.23 , Fig.23 The structure diagram of a display device provided in an embodiment of the present invention is shown in FIG. The display device 200 includes the display panel 100 described in the above embodiment of the present application, and the display device 200 can be any display device with a display function, such as a touch screen, a mobile phone, a tablet computer, a notebook computer, an e-book, or a television.

[0113] The display panel and its control method and display device provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for general technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0114] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0115] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device that includes a series of elements is inherent to the elements, or also includes elements inherent to these processes, methods, articles or devices. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0116] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: The display panel includes: an array MUX test circuit, a driving chip, a data signal line and a touch signal line; The array MUX test circuit includes a plurality of first pads, a plurality of second pads, a plurality of first switches and N clock signal input terminals; N≥2, and N is a positive integer; N first pads, N first switches and one second pad form a target unit; the N first pads in the target unit are electrically connected to the first ends of the N first switches in a one-to-one correspondence, and the second ends of the N first switches are electrically connected to one second pad; the control ends of the N first switches are electrically connected to the N clock signal input ends in a one-to-one correspondence; One end of the data signal line is electrically connected to the first pad, and the other end extends toward the display area of ​​the display panel; The display panel further includes: a plurality of second switches; a second switch is connected in series on a connection path between at least one of the first pads in the target unit and the first switch, and one end of the touch signal line is electrically connected to a first end of the first switch on the target connection path; the target connection path is at least one connection path among the connection paths in the target unit connected in series with the second switch; The other end of the touch signal line extends toward the display area of ​​the display panel and is electrically connected to the touch electrode block; The driving chip is electrically connected to the array MUX test circuit through the second pad; in the touch driving mode of the display panel, the plurality of second switches are in an off state, and the driving chip sends a touch signal to the touch signal line.

2. The display panel according to claim 1, characterized in that: A second switch is connected in series on a connection path between each of the first pads and the first switch in the target unit.

3. The display panel according to claim 2, characterized in that: A target connection path in the target unit that is separated by at least one target connection path is correspondingly connected to one of the touch signal lines.

4. The display panel according to claim 1, characterized in that: A second switch is connected in series on a connection path after at least one connection path in the target unit.

5. The display panel according to claim 1, 2 or 4, characterized in that: Each of the target connection paths is correspondingly connected to one of the touch signal lines.

6. The display panel according to claim 1, characterized in that: The first pad is electrically connected to the first end of the first switch via a first signal line; One end of the touch signal line is short-circuited with the first signal line.

7. The display panel according to claim 1, characterized in that: The touch signal line is located between two adjacent first pads.

8. The display panel according to claim 7, characterized in that: The number of touch signal lines between two adjacent first pads is H1, and the number of touch signal lines between two adjacent first pads is H2; Among them, H1≠H2.

9. The display panel according to claim 1, characterized in that: The array MUX test circuit comprises a plurality of third pads, wherein the plurality of third pads and the plurality of first pads are located on the same side; The plurality of third pads are in an electrically disconnected state.

10. The display panel according to claim 9, characterized in that: The touch signal line is located between two adjacent third pads.

11. The display panel according to claim 10, characterized in that: The number of touch signal lines between two adjacent third pads is Y1, and the number of touch signal lines between two adjacent third pads is Y2; Among them, Y1≠Y2.

12. The display panel according to claim 9, characterized in that: A portion of the touch signal line is located between two adjacent first pads, and a portion of the touch signal line is located between two adjacent third pads.

13. The display panel according to claim 12, characterized in that: The number of touch signal lines located between two adjacent first pads is W1, and the number of touch signal lines located between two adjacent third pads is W2; Among them, W1≠W2.

14. The display panel according to claim 9, characterized in that: The third pad is located in the first film layer, the touch signal line is located in the second film layer, and the first film layer and the second film layer are different layers; The orthographic projection of the touch signal line on the plane where the display panel is located overlaps with the orthographic projection of the third pad on the plane where the display panel is located.

15. The display panel according to claim 9, characterized in that: The third pad is connected in series to the touch signal line.

16. The display panel according to claim 1, characterized in that: The clock signals received by the N clock signal input terminals are high-level signals or low-level signals with different timings.

17. The display panel according to claim 1, characterized in that: The first switch and the second switch are both PMOS transistors.

18. A method for controlling a display panel, characterized in that: Based on the display panel according to any one of claims 1 to 17, the control method of the display panel includes: In a touch driving mode of the display panel, controlling the plurality of second switches to be in an off state; The control driving chip sends a touch signal to the touch signal line.

19. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1-17.

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