Touch display panel and display device

Abstract

The invention discloses a touch display panel and a display device.The touch display panel comprises a display substrate, a touch sensor array, a control chip and a plurality of touch connection groups, the touch sensor array is arranged in a display area of the display substrate and comprises a plurality of touch sensors arranged in an array; each touch connection group comprises an output end and at least two receiving ends, and each receiving end is connected with one touch sensor; and the control chip is connected with the output end of the touch connection group. Through the design, the number of the touch signal lines in the fan-out area of the touch display panel is effectively reduced, the wiring intensity in the fan-out area is reduced, the frame size can be reduced, and therefore a narrow frame can be achieved while high-resolution design is achieved.

Description

Technical Field

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

[0002] Display screens are generally available in two types: embedded and external. Display touch technology has gone through a long period of technical development, from the initial external, to semi-external On-cell, and then to in-cell fully integrated in the display panel. Among them, embedded display screens are widely used in mobile phones and tablet products because the touch electrodes and display electrodes are fully reused, which meets the thinness and lightness requirements of small and medium-sized consumer products, and has a significant trend of cost reduction.

[0003] However, in the embedded display screen, the display electrodes need to be reused as touch sensors while participating in the display function. The touch signal lines connected to the touch sensors need to be pulled out separately to the display and touch two-in-one integrated control chip. Therefore, the fan-out area in the embedded display screen will have additional touch signal lines while having conventional display drive lines. Based on the established production line equipment and process capabilities, the compression of the lower border of the display screen is limited, which is contrary to the full-screen trend. In addition, as the market demands high resolution and high precision of products, the number of data signal lines and touch signal lines will increase after being aggregated, and the fan-out lines will become denser, making it difficult to simultaneously optimize the two core indicators of high resolution and narrow border. Therefore, how to make the embedded display screen achieve narrow borders while meeting high resolution has become a technical problem that the panel industry urgently needs to overcome. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a touch display panel and a display device, which can achieve a narrow frame while meeting high resolution.

[0005] An embodiment of the present application discloses a touch display panel, which includes a display substrate, a touch sensor array, a control chip and multiple touch connection groups. The touch sensor array is arranged in a display area of ​​the display substrate and includes multiple touch sensors arranged in an array; each of the touch connection groups includes an output end and at least two receiving ends, and each of the receiving ends is respectively connected to one of the touch sensors; the control chip is connected to the output end of the touch connection group.

[0006] Optionally, the touch sensor array is divided into multiple touch units, each of which includes N touch sensors; the receiving ends in each touch connection group are respectively connected to touch sensors in different touch units, and the sizes of the touch sensors connected in each touch connection group are different; wherein N is a natural number greater than 1.

[0007] Optionally, in the touch unit, the N touch sensors are arranged in the same row; the receiving end of the touch connection group is respectively connected to the touch sensors in at least two touch units in the same row, and the at least two touch units connected to the touch connection group are arranged adjacent to each other in sequence; or, in the touch unit, the N touch sensors are arranged in the same column; the receiving end of the touch connection group is respectively connected to the touch sensors in at least two touch units in the same column, and the at least two touch units connected to the touch connection group are arranged adjacent to each other in sequence.

[0008] Optionally, the size of each touch sensor in the same touch unit is the same. When the touch sensors in the touch unit are arranged in the same row, the size of at least two touch sensors in the same row gradually decreases along the row direction; when the touch sensors in the touch unit are arranged in the same column, the size of at least two touch sensors in the same column gradually decreases along the column direction.

[0009] Optionally, in the display area of ​​the display substrate, all the touch sensor arrays are arranged into X rows and Y columns; when the N touch sensors in the touch unit are arranged in the same row, the number of receiving ends in the touch connection group is Y / N; when the N touch sensors in the touch unit are arranged in the same column, the number of receiving ends in the touch connection group is X / N; the receiving end of each touch connection group is respectively connected to the a-th touch sensor arranged in the corresponding touch unit; wherein Y / N and X / N are both natural numbers greater than 1, and a is a natural number greater than or equal to 1 and less than or equal to N.

[0010] Optionally, the touch connection group includes at least two receiving signal lines and a first output signal line, one end of the at least two receiving signal lines is connected to one end of the first output signal line, the other end of the at least two receiving signal lines is connected to the corresponding touch sensor as a receiving end, and the other end of the first output signal line is connected to the control chip as an output end.

[0011] Optionally, the touch connection group includes an auxiliary connection block and a second output signal line, the auxiliary connection block is connected to at least two touch sensors at the same time, one end of the second output signal line is connected to the auxiliary connection block, and the other end of the second output signal line is connected to the control chip.

[0012] Optionally, the auxiliary connecting block is annular and is arranged around the corresponding touch sensor.

[0013] Optionally, the touch sensor array is divided into a plurality of touch units, each of the touch units includes at least two touch sensors, the auxiliary connecting block is connected to all the touch sensors in the corresponding touch units, and sizes of all the touch sensors in the touch units are different.

[0014] An embodiment of the present application further discloses a display device, which includes a driving circuit and the touch display panel as described above, wherein the driving circuit is used to drive the touch display panel.

[0015] The beneficial effects of the embodiments of the present application are as follows: compared with the current solution in which each touch sensor requires a touch signal line to be connected to the control chip, the embodiments of the present application, through the design of the touch connection group, enable one touch connection group to connect at least two touch sensors to the control chip through one signal line, thereby effectively reducing the number of touch signal lines in the fan-out area of ​​the touch display panel, reducing the density of the wiring in the fan-out area, and facilitating reducing the size of the frame, thereby being able to achieve a narrow frame while achieving high-resolution design. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 is a schematic diagram of a touch display panel provided by the present application; Figure 2 is a partial schematic diagram of a touch display panel provided in the first embodiment of the present application; Figure 3 is a partial schematic diagram of a touch display panel provided in the second embodiment of the present application; Figure 4 is a partial schematic diagram of a touch display panel provided in the third embodiment of the present application; Figure 5 is a partial schematic diagram of a touch display panel provided by another embodiment of the present application; Figure 6 is a partial schematic diagram of a touch display panel provided by another embodiment of the present application; Figure 7 It is a schematic diagram of a display device provided by the present application.

[0017] Among them, 10, display device; 20, driving circuit; 30, touch display panel; 100, display substrate; 200, touch sensor array; 210, touch unit; 211, touch sensor; 300, touch connection group; 310, output end; 320, receiving end; 330, auxiliary connection block; 340, first output signal line; 350, second output signal line; 360, receiving signal line; 400, control chip. DETAILED DESCRIPTION

[0018] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0019] In addition, unless otherwise clearly specified or limited, "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0020] At present, most embedded display screens use touch signal routing led out by the control chip to drive the touch sensors separated by the split transparent electrodes, thereby realizing the touch function. Among them, the touch signal routing and the touch sensor are connected one by one, and the number of touch signal routing is equal to the number of touch sensors, so that the control chip can receive the signal of each touch sensor. However, this wiring method requires a lot of touch signal routing, resulting in the lower boundary of the touch display panel being too large, occupying a lot of space, which is not conducive to achieving a narrow frame.

[0021] Based on this, the present application provides a touch display panel that can achieve a narrow frame without affecting high-resolution display, thereby improving the product's competitive advantage.

[0022] like Figure 1 As shown, the touch display panel 30 includes a display substrate 100, a touch sensor array 200, a control chip 400 and a plurality of touch connection groups 300. The touch sensor array 200 is arranged in the display area of ​​the display substrate 100, and includes a plurality of touch sensors 211 arranged in an array; each of the touch connection groups 300 includes an output terminal 310 and at least two receiving terminals 320, and each of the receiving terminals 320 is respectively connected to one of the touch sensors 211; the control chip 400 is connected to the output terminal 310 of the touch connection group 300.

[0023] Compared with the current solution in which each touch sensor 211 requires a touch signal line to be connected to the control chip, the present application uses the design of the touch connection group 300 so that one touch connection group 300 connects at least two touch sensors 211 to the control chip 400 through one signal line, thereby effectively reducing the number of touch signal lines in the fan-out area of ​​the touch display panel 30 and reducing the density of the wiring in the fan-out area, which is beneficial to reducing the size of the border, thereby being able to achieve a narrow border effect while achieving high-resolution design.

[0024] The touch sensor array 200 is disposed inside the touch display panel 30 and is formed by cutting transparent electrodes on the display substrate 100 .

[0025] Moreover, the control chip 400 is not only connected to the touch connection group 300 to receive touch signals, but also connected to data lines in the touch display panel 30 to output data signals to the data lines.

[0026] It should be noted that the touch display panel 30 can be a liquid crystal display panel (Liquid Crystal Display, LCD), or an organic light-emitting diode display panel (Organic Light-Emitting Diode, OLED), a micro light-emitting diode display panel (Micro LED) or other types of display panels, which are not limited here.

[0027] The present application also provides the following multiple specific embodiments to explain the above touch display panel 30 in detail.

[0028] Embodiment 1: As the first embodiment provided by this application, Figure 2 As shown, the touch sensor array 200 is divided into a plurality of touch units 210, each of which includes N touch sensors 211; the receiving end 320 in each of the touch connection groups 300 is respectively connected to the touch sensors 211 in different touch units 210, and the sizes of the touch sensors 211 connected in each of the touch connection groups 300 are different; wherein N is a natural number greater than 1.

[0029] It can be understood that each receiving end 320 in the touch connection group 300 is connected to a touch sensor 211 , and these touch sensors 211 are located in different touch units 210 .

[0030] Since the size of the touch sensor 211 will affect the touch current, when the sizes of the touch sensors 211 connected to the touch connection group 300 are different, the control chip 400 first identifies the specific touch connection group 300 and the area corresponding to all the touch sensors 211 through the connection positions between the touch connection group 300 and the control chip 400, and then identifies the specific touch sensor 211 that is touched based on the different currents generated by these touch sensors 211 when touched, thereby achieving the effect of accurately identifying the touch position.

[0031] Specifically, in the embodiment of the present application, in the touch unit 210, the N touch sensors 211 are arranged in the same row; the receiving end 320 of the touch connection group 300 is respectively connected to the touch sensors 211 in at least two touch units 210 in the same row, and the at least two touch units 210 connected to the touch connection group 300 are arranged adjacent to each other in sequence.

[0032] Since the touch sensors 211 connected to each touch connection group 300 are arranged in the same row, and the touch units 210 connected to the touch connection group 300 are arranged adjacent to each other, the wiring design is convenient and the connection confusion is avoided.

[0033] In some embodiments, the N touch sensors 211 in the touch unit 210 may also be arranged in the same column. In this case, the receiving end 320 of the touch connection group 300 is respectively connected to the touch sensors 211 in at least two touch units 210 in the same column, and at least two touch units 210 connected to the touch connection group 300 are arranged adjacent to each other in sequence.

[0034] Of course, in some embodiments, the N touch sensors 211 in the touch unit 210 may also be arranged in an array of multiple rows and columns, or in an irregular dot arrangement, which is selected according to actual conditions.

[0035] Furthermore, the size of each touch sensor 211 in the same touch unit 210 is the same. In the embodiment of the present application, along the row direction, the size of the touch sensors 211 in at least two touch units 210 in the same row gradually decreases. At this time, the touch signals received by the receiving end 320 of each touch connection group 300 gradually change in sequence, so as to facilitate the identification of the positions of different touch sensors 211.

[0036] In other embodiments, when the touch sensors 211 in the touch control units 210 are arranged in the same column, the sizes of the touch sensors 211 in at least two touch control units 210 in the same column gradually decrease along the column direction.

[0037] Furthermore, in the display area of ​​the display substrate 100, all the touch sensor arrays 200 are arranged in X rows and Y columns; in the embodiment of the present application, the N touch sensors 211 in the touch unit 210 are arranged in the same row, and the number of receiving ends 320 in the touch connection group 300 is Y / N; and each receiving end 320 of the touch connection group 300 is respectively connected to the a-th touch sensor 211 arranged in the corresponding touch unit 210; wherein Y / N is a natural number greater than 1, and a is a natural number greater than or equal to 1 and less than or equal to N.

[0038] In the embodiment of the present application, all touch sensors 211 are connected to the control chip 400 through the touch connection group 300, and each touch connection group 300 has the same number of receiving terminals 320, avoiding the situation where a single touch sensor 211 is connected to the control chip 400 through one touch signal line, thereby greatly reducing the number of connections for outputting touch signals to the control chip 400.

[0039] Moreover, the receiving end 320 of each of the touch connection groups 300 is respectively connected to the touch sensor 211 arranged at the ath in the corresponding touch unit 210. It can be understood that the receiving end 320 in the first touch connection group 300 is respectively connected to the touch sensor 211 arranged at the first in each touch unit 210 in the corresponding row, the receiving end 320 in the second touch connection group 300 is respectively connected to the touch sensor 211 arranged at the second in each touch unit 210 in the corresponding row, and the receiving end 320 in the third touch connection group 300 is respectively connected to the touch sensor 211 arranged at the third in each touch unit 210 in the corresponding row, and so on. When the value of N is smaller and the value of Y / N is larger, the number of touch connection groups 300 is smaller, the number of wiring in the fan-out area is smaller, and the border can be further reduced.

[0040] In some embodiments, when N touch sensors 211 in the touch unit 210 are arranged in the same column, the number of receiving ends 320 in the touch connection group 300 is X / N; similarly, each receiving end 320 of the touch connection group 300 is respectively connected to the a-th touch sensor 211 arranged in the corresponding touch unit 210; and X / N is a natural number greater than 1, and a is a natural number greater than or equal to 1 and less than or equal to N.

[0041] In some embodiments, the values ​​of Y / N and X / N may not be integers, which means that even if all the receiving terminals 320 in the touch connection group 300 are connected to the touch sensors 211, some of the touch sensors 211 are not connected to the touch connection group 300 and can only be connected to the control chip 400 through the touch signal lines. In these embodiments, all the touch sensors 211 on the display substrate 100 are connected to the control chip 400 through two ways, one way is to connect to the control chip 400 through the touch connection group 300, and the other way is to connect to the control chip 400 through the touch signal lines. Compared with the current solution in which all the touch sensors 211 are connected to the control chip 400 through the touch signal lines, these embodiments can also reduce the number of connections of the control chip 400 due to the connection design of the touch connection group 300, and can be adapted to a variety of designs and have a wider range of applications.

[0042] In the embodiment of the present application, the touch connection group 300 includes at least two receiving signal lines 360 and a first output signal line 340, one end of the at least two receiving signal lines 360 is connected to one end of the first output signal line 340, the other end of the at least two receiving signal lines 360 is connected to the corresponding touch sensor 211 as a receiving end 320, and the other end of the first output signal line 340 is connected to the control chip 400 as an output end 310. Through the above design, the touch connection group 300 as a whole adopts a signal routing form, and the touch connection group 300 can be reused with the lines in the display substrate 100 to reduce the number of wiring; or the touch connection group 300 and the lines in the display substrate 100 overlap up and down to avoid increasing the aperture ratio.

[0043] It should be noted that different touch connection groups 300 can be arranged in different layers or connected to the receiving signal line 360 ​​and the first output signal line 340 through vias to avoid routing interference between different touch connection groups 300.

[0044] When all the touch sensors 211 on the display substrate 100 are arranged in an array of X rows and Y columns, if the original method of connecting one touch sensor 211 to one touch signal line is adopted, a total of X*Y touch signal lines are required in the touch display panel 30. At this time, the control chip 400 needs to connect X*Y routing lines in addition to connecting the data lines. In the embodiment of the present application, the N touch sensors 211 in the touch unit 210 are arranged in the same row, the number of receiving terminals 320 in the touch connection group 300 is Y / N, and there are a total of X*Y / (Y / N)=X*N touch connection groups 300 in the touch display panel 30, that is, a total of X*N output terminals 310. At this time, the control chip 400 needs to connect X*N routing lines in addition to connecting the data lines. Since the value of N is less than the value of Y, the effect of reducing the number of touch routing lines, reducing the fan-out space, and reducing the border of the touch display panel 30 is achieved.

[0045] As a specific example, when X is equal to 32, Y is equal to 50, and N is equal to 10, in addition to connecting the data lines, the control chip 400 in the prior art also needs to connect X*Y=1600 wirings for transmitting touch signals; while using the design of the embodiment of the present application, the control chip 400 only needs to connect X*N=320 wirings for transmitting touch signals, greatly reducing the number of wirings for transmitting touch signals.

[0046] When the N touch sensors 211 in the touch unit 210 are arranged in the same column, the number of receiving terminals 320 in the touch connection group 300 is X / N, and there are a total of X*Y / (X / N)=Y*N touch connection groups 300 in the touch display panel 30, that is, a total of Y*N output terminals 310. At this time, in addition to connecting the data lines, the control chip 400 also needs to connect Y*N lines for transmitting touch signals. Since the value of N is less than the value of X, the effect of reducing the number of touch lines, reducing the fan-out space, and reducing the border of the touch display panel 30 is also achieved.

[0047] Embodiment 2: like Figure 3 As shown, as the second embodiment provided by the present application, relative to the first embodiment, the touch connection group 300 in the embodiment of the present application does not adopt the design of signal lines, but adopts a combination of an auxiliary connection block 330 and a signal line. Specifically, the touch connection group 300 includes an auxiliary connection block 330 and a second output signal line 350, the auxiliary connection block 330 is connected to at least two touch sensors 211 at the same time, one end of the second output signal line 350 is connected to the auxiliary connection block 330, and the other end of the second output signal line 350 is connected to the control chip 400.

[0048] The embodiment of the present application connects at least two touch sensors 211 through a transparent auxiliary connection block 330, avoiding the need for the touch connection group 300 in the first embodiment to connect multiple touch sensors 211 through multiple signal lines, resulting in a large number of signal lines and a complex design requiring layered wiring. In the embodiment of the present application, the number of signal lines involved in the touch function is the same as the number of auxiliary connection blocks 330, and the auxiliary connection blocks 330 and the second output signal lines 350 are connected one-to-one. In addition, the auxiliary connection block 330 can adopt a transparent block design, which has a larger connection area with the touch sensor 211 without affecting the display aperture ratio, thereby improving the conduction effect of the touch signal and avoiding the problem of abnormal connection.

[0049] In the embodiment of the present application, the auxiliary connection block 330 and the touch sensor 211 are arranged in different layers, and are formed by cutting different layers of transparent electrodes, and the auxiliary connection block 330 is connected to the second output signal line 350 by punching. However, in other embodiments, the auxiliary connection block 330 can be designed in the same layer as the touch sensor 211, and both are cut by a layer of transparent electrode, and further, the second output signal line 350, the auxiliary connection block 330 and the touch sensor 211 can all be designed in the same layer, and the transparent electrode is cut through a process to obtain the three structures of the second output signal line 350, the auxiliary connection block 330 and the touch sensor 211, thereby greatly reducing the manufacturing process and improving the production efficiency. Of course, in other embodiments, the second output signal line 350, the auxiliary connection block 330 and the touch sensor 211 can also be designed in different layers respectively, and the second output signal line 350 and the auxiliary connection block 330 can be metal structures.

[0050] In the embodiment of the present application, the auxiliary connection block 330 is an annular block structure, which is arranged around the corresponding touch sensor 211. Through this design, it is avoided that a large overlapping area is generated between the auxiliary connection block 330 and the touch sensor 211, resulting in parasitic capacitance and affecting the accuracy of the touch signal. Of course, in other embodiments, the auxiliary connection block 330 can also be a grid-shaped or other block-shaped design.

[0051] Further, in the display area of ​​the display substrate 100, all touch sensors 211 are arrayed into X rows and Y columns, and all touch sensor arrays 200 are divided into a plurality of touch control units 210, each of which includes N touch sensors 211, where N is a natural number greater than 1, and the N touch sensors 211 in the touch control unit 210 are arranged in the same row. Moreover, the auxiliary connection block 330 is connected to all touch sensors 211 in the corresponding touch control unit 210, and the sizes of all touch sensors 211 in the same touch control unit 210 are the same, while the sizes of touch sensors 211 in different touch control units 210 are different; specifically, along the row direction, the sizes of touch sensors 211 in different touch control units 210 gradually decrease.

[0052] In the embodiment of the present application, except for the first touch unit 210 in each row which is not connected to the auxiliary connection block 330, all other touch units 210 are connected to the auxiliary connection block 330; wherein, in the first touch unit 210 in the first row, each touch sensor 211 is connected to the control chip 400 through a touch signal line.

[0053] Through the above design, since the size of the touch sensor 211 in the first touch unit 210 in each row is the largest, the user will cover fewer touch sensors 211 when using the finger to touch the panel. By connecting each touch sensor 211 in the first touch unit 210 in each row to the control chip 400 through the touch signal line, the touch sensor 211 in the first touch unit 210 can be accurately identified to accurately identify the touch position. The size of the touch sensors 211 in other touch units 210 gradually decreases, and the area of ​​the corresponding touch unit 210 is also smaller. When the user uses the finger to touch the panel, more touch sensors 211 will be covered, and the area of ​​a single touch unit 210 is not obvious. Therefore, it is only necessary to identify which touch unit 210 is touched, so that the touch position can be accurately identified.

[0054] When all the touch sensor arrays 200 on the display substrate 100 are arranged in X rows and Y columns, if the original method of connecting one touch sensor 211 to one touch signal line is adopted, a total of X*Y touch signal lines are required in the touch display panel 30. In this case, in addition to connecting the data lines, the control chip 400 also needs to connect X*Y lines for transmitting touch signals. In the embodiment of the present application, N touch sensors 211 in the touch unit 210 are arranged in the same row, the number of touch units 210 in a row is Y / N, and the number of touch units 210 in a row that are only connected to the auxiliary connection block 330 is Y / N-1. At this time, since all the touch sensors 211 in the first touch unit 210 are connected to the control chip 400 through touch signal lines, the number of wiring required for each row is N+Y / N-1. In the entire touch display panel 30, in addition to connecting the data lines, the control chip 400 also needs to connect (N+Y / N-1)*X wiring lines for transmitting touch signals, thereby achieving the effect of reducing the number of touch wirings, reducing the fan-out space, and reducing the border of the touch display panel 30.

[0055] As a specific example, when X is equal to 32, Y is equal to 50, and N is equal to 10, in the prior art, the control chip 400 needs to connect X*Y=1600 touch signal transmission lines in addition to the data lines; while using the design of the embodiment of the present application, the control chip 400 needs to connect (N+Y / N-1)*X=448 touch signal transmission lines in addition to the data lines, thereby greatly reducing the number of touch signal transmission lines.

[0056] In some embodiments, the sizes of all touch sensors 211 in the touch control unit 210 may be different, so as to achieve an effect of accurately identifying each touch sensor 211 .

[0057] In some embodiments, the N touch sensors 211 in the touch unit 210 may also be arranged in the same row or in other arrangements.

[0058] In some embodiments, each touch unit 210 may be connected to an auxiliary connection block 330 , or the third, fourth, or other touch units 210 in each row may be connected to the auxiliary connection block 330 , or a portion of all the touch units 210 may be selected in a dotted manner to be connected to the auxiliary connection block 330 .

[0059] Embodiment three: like Figure 4As shown, as the third embodiment provided by the present application, relative to the second embodiment, the touch connection group 300 in the embodiment of the present application also adopts a combination design of an auxiliary connection block 330 and a signal line. Similarly, in the display area of ​​the display substrate 100, all touch sensors 211 are arrayed into X rows and Y columns, and all touch sensors 211 are arrayed into a plurality of touch units 210. The touch unit 210 includes N touch sensors 211, where N is a natural number greater than 1, and the N touch sensors 211 in the touch unit 210 are arranged in the same row.

[0060] In the embodiment of the present application, all touch sensors 211 have the same size, and each touch unit 210 is connected to an auxiliary connecting block 330 .

[0061] Through the above design, since all touch sensors 211 have the same size, it is convenient to cut and design the touch sensors 211, and it is also convenient to design the auxiliary connection blocks 330 and the signal lines. Moreover, the touch signals are relatively uniform, which is convenient for identification.

[0062] If the original method of connecting one touch sensor 211 to one touch signal line is adopted, a total of X*Y touch signal lines are required in the touch display panel 30. In this case, the control chip 400 needs to connect X*Y touch signal transmission lines in addition to the data lines. In the embodiment of the present application, the N touch sensors 211 in the touch unit 210 are arranged in the same row, and the number of touch units 210 in one row is Y / N, and the number of corresponding auxiliary connection blocks 330 and the number of second output signal lines 350 are both Y / N. In this case, the control chip 400 needs to connect (Y / N)*X touch signal transmission lines in addition to the data lines.

[0063] As a specific example, when X is equal to 32, Y is equal to 50, and N is equal to 10, in addition to connecting the data lines, the control chip 400 in the prior art also needs to connect X*Y=1600 wirings for transmitting touch signals; while using the design of the embodiment of the present application, the control chip 400 only needs to connect (Y / N)*X=160 wirings for transmitting touch signals, greatly reducing the number of wirings for transmitting touch signals.

[0064] In some embodiments, the sizes of all touch sensors 211 in the touch control unit 210 may be different, so as to achieve an effect of accurately identifying each touch sensor 211 .

[0065] like Figure 5As shown, in some embodiments, based on the second embodiment and in combination with the design of the touch connection group 300 in the first embodiment, on one hand, a part of the touch connection group 300 adopts a design of an auxiliary connection block 330 and a second output signal line 350. At this time, except for the first touch unit 210 in each row which is not connected to the auxiliary connection block 330, all other touch units 210 are connected to the auxiliary connection block 330, and each auxiliary connection block 330 is connected to the control chip 400 through a second output signal line 350. On the other hand, another part of the touch connection group 300 adopts a design of at least two receiving signal lines 360 and a first output signal line 340. In each row of the touch units 210, each receiving signal line 360 ​​of the touch connection group 300 is respectively connected to the a-th touch sensor 211 in the corresponding touch unit 210, and the first output signal line 340 is connected to the control chip 400. With this design, in addition to connecting the data lines, the control chip 400 also needs to connect (N+Y / N-1)*X=448 lines for transmitting touch signals.

[0066] like Figure 6 As shown, in some embodiments, based on the third embodiment and in combination with the design of the touch connection group 300 in the first embodiment, on one hand, a part of the touch connection group 300 adopts a design of an auxiliary connection block 330 and a second output signal line 350. At this time, all the touch control units 210 are connected to the auxiliary connection block 330, and each auxiliary connection block 330 is connected to the control chip 400 through a second output signal line 350. On the other hand, another part of the touch connection group 300 adopts a design of at least two receiving signal lines 360 and a first output signal line 340. In each row of the touch control units 210, each receiving signal line 360 ​​of the touch connection group 300 is respectively connected to the a-th touch sensor 211 in the corresponding touch control unit 210, and the first output signal line 340 is connected to the control chip 400. With this design, in addition to connecting the data lines, the control chip 400 also needs to connect (N+Y / N)*X=480 lines for transmitting touch signals.

[0067] By adopting the above design and combining the two touch connection groups 300, the specific touch position is first identified on which touch sensor 211 is arranged in the touch unit 210, and then the touch unit 210 of the touch position is identified. The two are combined to identify the specific touch sensor 211, thereby achieving the purpose of accurate identification.

[0068] like Figure 7As shown, the present application further provides a display device, the display device 10 includes a driving circuit 20 and the touch display panel 30 in the above embodiment, the driving circuit 20 is used to drive the touch display panel 30 .

[0069] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A touch display panel, characterized in that: include: Display substrate; A touch sensor array, arranged in a display area of ​​the display substrate, comprising a plurality of touch sensors arranged in an array; A plurality of touch connection groups, each of which comprises an output terminal and at least two receiving terminals, and each of the receiving terminals is respectively connected to one of the touch sensors; as well as A control chip is connected to the output end of the touch connection group.

2. The touch display panel according to claim 1, wherein: The touch sensor array is divided into a plurality of touch units, each of which includes N touch sensors; The receiving ends in each of the touch connection groups are respectively connected to the touch sensors in different touch control units, and the sizes of the touch sensors connected in each of the touch connection groups are different; Wherein, N is a natural number greater than 1.

3. The touch display panel according to claim 2, wherein: In the touch control unit, the N touch sensors are arranged in the same row; the receiving ends of the touch connection group are respectively connected to the touch sensors in at least two touch control units in the same row, and the at least two touch control units connected to the touch connection group are arranged adjacent to each other in sequence; or In the touch unit, the N touch sensors are arranged in the same column; the receiving ends of the touch connection group are respectively connected to the touch sensors in at least two touch units in the same column, and the at least two touch units connected to the touch connection group are arranged adjacent to each other in sequence.

4. The touch display panel according to claim 3, wherein: The size of each touch sensor in the same touch unit is the same. When the touch sensors in the touch unit are arranged in the same row, the size of at least two touch sensors in the same row gradually decreases along the row direction; when the touch sensors in the touch unit are arranged in the same column, the size of at least two touch sensors in the same column gradually decreases along the column direction.

5. The touch display panel according to claim 4, wherein: In the display area of ​​the display substrate, all the touch sensor arrays are arranged in X rows and Y columns; when the N touch sensors in the touch unit are arranged in the same row, the number of receiving terminals in the touch connection group is Y / N; when the N touch sensors in the touch unit are arranged in the same column, the number of receiving terminals in the touch connection group is X / N; The receiving end of each of the touch connection groups is respectively connected to the a-th touch sensor arranged in the corresponding touch unit; Wherein, Y / N and X / N are both natural numbers greater than 1, and a is a natural number greater than or equal to 1 and less than or equal to N.

6. The touch display panel according to claim 1, wherein: The touch connection group includes at least two receiving signal lines and a first output signal line, one end of the at least two receiving signal lines is connected to one end of the first output signal line, the other end of the at least two receiving signal lines is connected to the corresponding touch sensor as a receiving end, and the other end of the first output signal line is connected to the control chip as an output end.

7. The touch display panel according to any one of claims 1 to 5, characterized in that: The touch connection group includes an auxiliary connection block and a second output signal line, the auxiliary connection block is connected to at least two touch sensors at the same time, one end of the second output signal line is connected to the auxiliary connection block, and the other end of the second output signal line is connected to the control chip.

8. The touch display panel according to claim 7, wherein: The auxiliary connection block is annular and is arranged around the corresponding touch sensor.

9. The touch display panel according to claim 7, wherein: The touch sensor array is divided into a plurality of touch units, each of which includes at least two touch sensors, the auxiliary connecting block is connected to all the touch sensors in the corresponding touch unit, and the sizes of all the touch sensors in the touch unit are different.

10. A display device, characterized in that: It comprises a driving circuit and a touch display panel as claimed in any one of claims 1 to 9, wherein the driving circuit is used to drive the touch display panel.

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