Touch display panel and display device

Abstract

The application 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 array-arranged touch sensors. Each touch connection group comprises an output end and at least two receiving ends. Each receiving end is connected with one touch sensor. The control chip is connected with the output end of the touch connection group. Through the above design, the number of touch signal lines in the fan-out area of the touch display panel is effectively reduced, the density of the wires in the fan-out area is reduced, the frame size is reduced, and thus the high-resolution design and the narrow frame can be realized.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a touch display panel and display device. Background Technology

[0002] Display screens generally come in two types: embedded and external. Display touch technology has undergone a long period of development, evolving from the initial external type to semi-external on-cell, and finally to in-cell, fully integrated into the display panel. Among these, embedded displays, because the touch electrodes and display electrodes are completely reused, meet the thinner and lighter requirements of small and medium-sized consumer products, and have a significant cost-reduction trend, and are widely used in mobile phones and tablets.

[0003] However, in embedded displays, the display electrodes, while participating in the display function, also need to be reused as touch sensors. The touch signal lines connecting to the touch sensors need to be separately routed to the integrated control chip that combines display and touch. Therefore, the fan-out area in an embedded display will have additional touch signal lines in addition to the conventional display driver traces. Under the existing production line equipment and process capabilities, the compression of the bottom bezel of the display screen is limited, which contradicts the trend of full-screen displays. Moreover, with the market's demand for high resolution and high precision of products, the number of data signal lines and touch signal traces will increase, and the fan-out traces will become more dense, making it difficult to simultaneously optimize the two core indicators of high resolution and narrow bezel. Therefore, how to achieve narrow bezels while meeting the requirements of high resolution in embedded displays has become a technical problem that the panel industry urgently needs to overcome. Summary of the Invention

[0004] The purpose of this application is to provide a touch display panel and display device that can achieve narrow bezels while meeting high resolution requirements.

[0005] This 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 disposed in the display area of ​​the display substrate and includes multiple touch sensors arranged in an array. Each touch connection group includes an output terminal and at least two receiving terminals, and each receiving terminal is connected to one of the touch sensors. The control chip is connected to the output terminal 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 end in each touch connection group is connected to the touch sensors in different touch units, and the size of the touch sensors connected in each touch connection group is different; where 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 of the 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 of the 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, each touch sensor in the same touch unit has the same size. When the touch sensors in the touch unit are arranged in the same row, the size of the touch sensors in at least two touch units 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 the touch sensors in at least two touch units 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 in X rows and Y columns; when N touch sensors in the touch unit are arranged in the same row, the number of receivers in the touch connection group is Y / N; when N touch sensors in the touch unit are arranged in the same column, the number of receivers in the touch connection group is X / N; the receiver of each touch connection group is connected to the a-th touch sensor in the corresponding touch unit; where 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, and the other end of the at least two receiving signal lines serves as a receiving end and is connected to the corresponding touch sensor. The other end of the first output signal line serves as an output end and is connected to the control chip.

[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 simultaneously. 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 ring-shaped and arranged around the corresponding touch sensor.

[0013] Optionally, the touch sensor array is divided into multiple touch units, each of which includes at least two touch sensors. The auxiliary connection block is connected to all touch sensors in the corresponding touch unit, and all touch sensors in the touch unit have different sizes.

[0014] This application also discloses a display device, which includes a driving circuit and a touch display panel as described above, wherein the driving circuit is used to drive the touch display panel.

[0015] The beneficial effects of this application embodiment are as follows: Compared with the current solution where each touch sensor needs a touch signal line to be connected to the control chip, this application embodiment, through the design of the touch connection group, enables at least two touch sensors to be connected to the control chip through a single signal line. This effectively reduces the number of touch signal lines in the fan-out area of ​​the touch display panel, reduces the density of the wiring in the fan-out area, and helps to reduce the bezel size, thereby enabling a narrow bezel design while achieving high resolution. Attached Figure Description

[0016] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0017] Figure 1 This is a schematic diagram of a touch display panel provided in this application;

[0018] Figure 2 This is a partial schematic diagram of a touch display panel provided in the first embodiment of this application;

[0019] Figure 3 This is a partial schematic diagram of a touch display panel provided in the second embodiment of this application;

[0020] Figure 4 This is a partial schematic diagram of a touch display panel provided in the third embodiment of this application;

[0021] Figure 5 This is a partial schematic diagram of a touch display panel provided in another embodiment of this application;

[0022] Figure 6 This is a partial schematic diagram of a touch display panel provided in another embodiment of this application;

[0023] Figure 7This is a schematic diagram of a display device provided in this application.

[0024] Among them, 10 is a display device; 20 is a driving circuit; 30 is a touch display panel; 100 is a display substrate; 200 is a touch sensor array; 210 is a touch unit; 211 is a touch sensor; 300 is a touch connection group; 310 is an output terminal; 320 is a receiving terminal; 330 is an auxiliary connection block; 340 is a first output signal line; 350 is a second output signal line; 360 is a receiving signal line; and 400 is a control chip. Detailed Implementation

[0025] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0026] Furthermore, unless otherwise explicitly specified and limited, "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] Currently, most embedded displays rely on control chips to route touch signal lines, which drive touch sensors separated by transparent electrodes to achieve touch functionality. Each touch signal line is connected to a touch sensor in a one-to-one correspondence, with the number of touch signal lines equal to the number of touch sensors, ensuring the control chip can receive signals from each sensor. However, this wiring method requires numerous touch signal lines, resulting in an excessively large bottom bezel of the touch display panel, occupying significant space and hindering the achievement of narrow bezels.

[0028] Based on this, this application provides a touch display panel that can achieve a narrow bezel without affecting high-resolution display, thereby enhancing the product's competitive advantage.

[0029] like Figure 1As shown, the touch display panel 30 includes a display substrate 100, a touch sensor array 200, a control chip 400, and multiple touch connection groups 300. The touch sensor array 200 is disposed in the display area of ​​the display substrate 100 and includes multiple touch sensors 211 arranged in an array. Each touch connection group 300 includes an output terminal 310 and at least two receiving terminals 320, and each receiving terminal 320 is 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.

[0030] Compared to the current solution where each touch sensor 211 requires a touch signal line to connect to the control chip, this application, through the design of the touch connection group 300, enables at least two touch sensors 211 to be connected to the control chip 400 through a single signal line. This effectively reduces the number of touch signal lines in the fan-out area of ​​the touch display panel 30, reduces the density of wiring in the fan-out area, and helps to reduce the bezel size, thus achieving a narrow bezel effect while maintaining a high resolution design.

[0031] The touch sensor array 200 is located inside the touch display panel 30 and is formed by cutting transparent electrodes on the display substrate 100.

[0032] Moreover, the control chip 400 is not only connected to the touch connection group 300 to receive touch signals, but also connected to the data line in the touch display panel 30 to output data signals to the data line.

[0033] It should be noted that the touch display panel 30 can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), a micro LED display panel, or other types of display panels, and is not limited here.

[0034] This application also provides several specific embodiments to illustrate the touch display panel 30 described above.

[0035] Example 1:

[0036] As a first embodiment provided in this application, such as Figure 2As shown, the touch sensor array 200 is divided into multiple touch units 210, and each touch unit 210 includes N touch sensors 211; the receiving end 320 in each touch connection group 300 is connected to the touch sensors 211 in different touch units 210, and the size of the touch sensors 211 connected in each touch connection group 300 is different; where N is a natural number greater than 1.

[0037] Understandably, each receiver 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.

[0038] Since the size of the touch sensor 211 affects the touch current, when the touch sensors 211 connected to the touch connection group 300 have different sizes, the control chip 400 first identifies the specific touch connection group 300 and the area where all the touch sensors 211 are located by the connection position between the touch connection group 300 and the control chip 400. Then, based on the different currents generated by these touch sensors 211 when touched, the specific touch sensor 211 that is touched is identified, thus achieving the effect of accurately identifying the touch position.

[0039] Specifically, in the embodiments of this 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 connected to the touch sensors 211 in at least two of the 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.

[0040] 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, it is convenient for wiring design and avoids messy wiring.

[0041] 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 connected to the touch sensors 211 in at least two touch units 210 in the same column, and the at least two touch units 210 connected to the touch connection group 300 are arranged adjacent to each other in sequence.

[0042] Of course, in some embodiments, the N touch sensors 211 in the touch unit 210 can also be arranged in a multi-row, multi-column array or in an irregular dotted arrangement, depending on the actual situation.

[0043] Furthermore, each touch sensor 211 in the same touch unit 210 has the same size. In this embodiment, along the row direction, the size of the touch sensors 211 in at least two touch units 210 located 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, which facilitates the identification of the position of different touch sensors 211.

[0044] In other embodiments, when the touch sensors 211 in the touch unit 210 are arranged in the same column, the size of the touch sensors 211 in at least two of the touch units 210 located in the same column gradually decreases along the column direction.

[0045] 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 this embodiment, the N touch sensors 211 in the touch unit 210 are arranged in the same row, and the number of receivers 320 in the touch connection group 300 is Y / N; moreover, the receiver 320 of each touch connection group 300 is connected to the a-th touch sensor 211 arranged in the corresponding touch unit 210; where 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.

[0046] In this embodiment, all touch sensors 211 are connected to the control chip 400 through touch connection groups 300, and each touch connection group 300 has the same number of receivers 320, avoiding the situation where a single touch sensor 211 is connected to the control chip 400 through a single touch signal line, thereby greatly reducing the number of lines connecting the control chip 400 to output touch signals.

[0047] Furthermore, the receiving end 320 of each of the touch connection groups 300 is connected to the touch sensor 211 arranged in the a-th row of the corresponding touch unit 210. This can be understood as follows: the receiving end 320 of the first touch connection group 300 is connected to the first touch sensor 211 arranged in the corresponding row of each touch unit 210; the receiving end 320 of the second touch connection group 300 is connected to the second touch sensor 211 arranged in the corresponding row of each touch unit 210; the receiving end 320 of the third touch connection group 300 is connected to the third touch sensor 211 arranged in the corresponding row of each touch unit 210, and so on. When the value of N is smaller, the value of Y / N is larger, the number of touch connection groups 300 is smaller, the number of traces in the fan-out area is smaller, and the bezel can be further reduced.

[0048] In some embodiments, when the N touch sensors 211 in the touch unit 210 are arranged in the same column, the number of receivers 320 in the touch connection group 300 is X / N; similarly, the receiver 320 of each touch connection group 300 is 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.

[0049] In some embodiments, the values ​​of Y / N and X / N may not be integers. In this case, it means that even if all the receivers 320 in the touch connection group 300 are connected to the touch sensor 211, some touch sensors 211 will still not be connected to the touch connection group 300 and can only be connected to the control chip 400 individually via 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 methods: one is through the touch connection group 300, and the other is through touch signal lines. Compared to the current scheme where all touch sensors 211 are connected to the control chip 400 individually via touch signal lines, these embodiments, due to the connection design of the touch connection group 300, can also reduce the number of connections to the control chip 400 and can be adapted to various designs, thus having a wider range of applications.

[0050] In this embodiment, 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, and the other end of the at least two receiving signal lines 360 serves as a receiving end 320 connected to the corresponding touch sensor 211. The other end of the first output signal line 340 serves as an output end 310 connected to the control chip 400. Through this design, the touch connection group 300 adopts a signal routing form as a whole. The touch connection group 300 can be reused with the lines in the display substrate 100, reducing the number of wirings; or the touch connection group 300 and the lines in the display substrate 100 can overlap vertically, avoiding an increase in the aperture ratio.

[0051] It should be noted that different touch connection groups 300 can avoid wiring interference between different touch connection groups 300 by setting them on different layers or by connecting the receiving signal line 360 ​​and the first output signal line 340 through vias.

[0052] When all the touch sensors 211 arrays 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 used, then a total of X*Y touch signal lines are needed in the touch display panel 30. At this time, the control chip 400 needs to connect X*Y traces in addition to the data lines. However, in this embodiment, 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 traces in addition to the data lines. Since the value of N is less than the value of Y, the effect of reducing the number of touch traces, reducing the fan-out space, and reducing the bezel of the touch display panel 30 is achieved.

[0053] As a specific example, when X equals 32, Y equals 50, and N equals 10, in the prior art, the control chip 400 needs to connect X*Y=1600 traces to transmit touch signals in addition to connecting the data lines; while with the design of the embodiment of this application, the control chip 400 only needs to connect X*N=320 traces to transmit touch signals, which greatly reduces the number of traces to transmit touch signals.

[0054] When the N touch sensors 211 in the touch unit 210 are arranged in the same column, the number of receivers 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 line, the control chip 400 also needs to connect Y*N traces to transmit touch signals. Since the value of N is less than the value of X, the same effect of reducing the number of touch traces, reducing the fan-out space, and reducing the bezel of the touch display panel 30 is achieved.

[0055] Example 2:

[0056] like Figure 3 As shown, as a second embodiment provided in this application, compared with the first embodiment, the touch connection group 300 in this embodiment does not all adopt a signal line design, but adopts a combination design of auxiliary connection block 330 and 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.

[0057] In this embodiment, at least two touch sensors 211 are connected via a transparent auxiliary connecting block 330. This avoids the complex design of the first embodiment, where the touch connection group 300 requires multiple signal lines to connect multiple touch sensors 211, resulting in a large number of signal lines and the need for layered wiring. In this embodiment, the number of signal lines involved in the touch function is the same as the number of auxiliary connecting blocks 330, and the auxiliary connecting blocks 330 and the second output signal line 350 are connected one-to-one. Furthermore, the auxiliary connecting block 330 can adopt a transparent block design, which, without affecting the display aperture ratio, provides a larger connection area with the touch sensor 211, improving the conduction effect of the touch signal and avoiding connection abnormalities.

[0058] In this embodiment, the auxiliary connection block 330 and the touch sensor 211 are disposed on different layers and formed by cutting transparent electrodes of different layers. The auxiliary connection block 330 is connected to the second output signal line 350 through a hole. However, in other embodiments, the auxiliary connection block 330 and the touch sensor 211 can be designed on the same layer, both formed by cutting a single layer of transparent electrodes. Furthermore, the second output signal line 350, the auxiliary connection block 330, and the touch sensor 211 can all be designed on the same layer, and the three structures of the second output signal line 350, the auxiliary connection block 330, and the touch sensor 211 can be obtained by cutting transparent electrodes in one process, thereby greatly reducing manufacturing steps and improving 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 on different layers, and the second output signal line 350 and the auxiliary connection block 330 can be made of metal.

[0059] In this embodiment, the auxiliary connecting block 330 is a ring-shaped block structure, surrounding the touch sensor 211. This design avoids a large overlap between the auxiliary connecting block 330 and the touch sensor 211, which could lead to parasitic capacitance and affect the accuracy of the touch signal. Of course, in other embodiments, the auxiliary connecting block 330 can also be a grid-like or other block-shaped design.

[0060] Furthermore, in the display area of ​​the display substrate 100, all touch sensor arrays 211 are arranged in X rows and Y columns. All touch sensor arrays 200 are divided into multiple touch units 210, each touch unit 210 including N touch sensors 211, where N is a natural number greater than 1, and the N touch sensors 211 in each touch unit 210 are arranged in the same row. Moreover, the auxiliary connecting block 330 is connected to all touch sensors 211 in the corresponding touch unit 210, and all touch sensors 211 in the same touch unit 210 have the same size, while the size of touch sensors 211 in different touch units 210 is different; specifically, along the row direction, the size of touch sensors 211 in different touch units 210 gradually decreases.

[0061] In this embodiment of the 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 of the first row, each touch sensor 211 is connected to the control chip 400 through a touch signal line.

[0062] Through the above design, since the touch sensor 211 in the first touch unit 210 of each row is the largest, when the user uses their finger to touch the first touch unit 210, they will cover fewer touch sensors 211. By connecting each touch sensor 211 in the first touch unit 210 of each row to the control chip 400 through a touch signal line, the touch sensor 211 touched in the first touch unit 210 can be accurately identified, thus accurately identifying the touch position. In contrast, the size of the touch sensors 211 in the other touch units 210 gradually decreases, and the corresponding area of ​​the touch units 210 is also smaller. When the user uses their finger to touch the panel, they will cover more touch sensors 211, and the area of ​​a single touch unit 210 is not obvious. Therefore, it is only necessary to identify which touch unit 210 is being used, thus accurately identifying the touch position.

[0063] 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 used, then a total of X*Y touch signal lines are needed in the touch display panel 30. At this time, in addition to connecting the data line, the control chip 400 also needs to connect X*Y traces to transmit touch signals. In this embodiment, the 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. 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 traces 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 traces to transmit touch signals, thereby achieving the effect of reducing the number of touch traces, reducing the fan-out space, and reducing the bezel of the touch display panel 30.

[0064] As a specific example, when X equals 32, Y equals 50, and N equals 10, in the prior art, the control chip 400 needs to connect X*Y=1600 traces to transmit touch signals in addition to connecting the data lines; while with the design of the embodiment of this application, the control chip 400 needs to connect (N+Y / N-1)*X=448 traces to transmit touch signals in addition to connecting the data lines, thereby greatly reducing the number of traces to transmit touch signals.

[0065] In some embodiments, all touch sensors 211 in the touch unit 210 may have different sizes, thereby achieving the effect of accurate identification of each touch sensor 211.

[0066] In some embodiments, the N touch sensors 211 in the touch unit 210 may also be arranged in the same column or in other arrangements.

[0067] In some embodiments, each touch unit 210 may be connected to an auxiliary connection block 330, or the auxiliary connection block 330 may be connected starting from the third, fourth or other touch units 210 in each row, or a portion of all touch units 210 may be selected in a dotted manner to be connected to the auxiliary connection block 330.

[0068] Example 3:

[0069] like Figure 4As shown, as the third embodiment provided in this application, compared with the second embodiment, the touch connection group 300 in this embodiment also adopts the design of combining auxiliary connection block 330 and signal line. Similarly, in the display area of ​​the display substrate 100, all touch sensors 211 arrays are arranged in X rows and Y columns. All touch sensors 211 arrays are divided into multiple touch units 210. Each 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.

[0070] In this embodiment, all touch sensors 211 are the same size, and each touch unit 210 is connected to an auxiliary connection block 330.

[0071] With the above design, since all touch sensors 211 are the same size, it is convenient to cut and design the touch sensors 211, and it is also convenient to design the auxiliary connecting block 330 and signal lines. Moreover, the touch signal is relatively uniform, which is convenient for recognition.

[0072] If the original method of connecting one touch sensor 211 to one touch signal line is used, then a total of X*Y touch signal lines are needed in the touch display panel 30. In this case, the control chip 400 needs to connect X*Y traces to transmit touch signals in addition to the data lines. However, in this embodiment, the N touch sensors 211 in the touch unit 210 are arranged in the same row, and the number of touch units 210 in a row is Y / N. The number of 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 traces to transmit touch signals in addition to the data lines.

[0073] As a specific example, when X equals 32, Y equals 50, and N equals 10, in the prior art, the control chip 400 needs to connect X*Y=1600 traces to transmit touch signals in addition to connecting the data lines; while with the design of the embodiment of this application, the control chip 400 only needs to connect (Y / N)*X=160 traces to transmit touch signals, which greatly reduces the number of traces to transmit touch signals.

[0074] In some embodiments, all touch sensors 211 in the touch unit 210 may have different sizes, thereby achieving the effect of accurate identification of each touch sensor 211.

[0075] like Figure 5As shown, in some embodiments, based on Embodiment 2 and combined with the design of the touch connection group 300 in Embodiment 1, on the one hand, a portion of the touch connection group 300 adopts a design of an auxiliary connection block 330 and a second output signal line 350. In this case, 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. Each auxiliary connection block 330 is connected to the control chip 400 through a second output signal line 350. On the other hand, another portion 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 touch units 210, the receiving signal line 360 ​​of each touch connection group 300 is connected to the touch sensor 211 arranged a-th 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 line, the control chip 400 also needs to connect (N+Y / N-1)*X=448 traces to transmit touch signals.

[0076] like Figure 6 As shown, in some embodiments, based on Embodiment 3 and combined with the design of the touch connection group 300 in Embodiment 1, on the one hand, a portion of the touch connection group 300 adopts a design of an auxiliary connection block 330 and a second output signal line 350. In this case, all 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 portion 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 touch units 210, the receiving signal line 360 ​​of each touch connection group 300 is connected to the touch sensor 211 arranged at the a-th position 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)*X=480 traces for transmitting touch signals.

[0077] 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 position is identified in which touch unit 210. The two are combined to identify the specific touch sensor 211, thereby achieving the purpose of accurate identification.

[0078] like Figure 7As shown, this application also provides a display device, the display device 10 including a driving circuit 20 and a touch display panel 30 in the above embodiments, the driving circuit 20 being used to drive the touch display panel 30.

[0079] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A touch display panel, characterized in that, include: Display substrate; A touch sensor array is disposed in the display area of ​​the display substrate, including multiple touch sensors arranged in an array; the touch sensor array is divided into multiple touch units, each touch unit including N touch sensors, and each touch sensor in the same touch unit has the same size; Multiple touch connection groups, each of the touch connection groups includes an output terminal and at least two receiving terminals, each of the receiving terminals is connected to a touch sensor; the receiving terminals in each touch connection group are connected to touch sensors in different touch units, and the touch sensors connected in each touch connection group are of different sizes; as well as The control chip is connected to the output terminal of the touch connection group, and all the touch sensors are connected to the control chip through the touch connection group; 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 of the 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 connected to the touch sensors in at least two of the 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; Where N is a natural number greater than 1.

2. The touch display panel as described in claim 1, characterized in that, When the touch sensors in the touch units are arranged in the same row, the size of the touch sensors in at least two touch units in the same row gradually decreases along the row direction; when the touch sensors in the touch units are arranged in the same column, the size of the touch sensors in at least two touch units in the same column gradually decreases along the column direction.

3. The touch display panel as described in claim 2, characterized in that, In the display area of ​​the display substrate, all the touch sensor arrays are arranged in X rows and Y columns; when N touch sensors in the touch unit are arranged in the same row, the number of receivers in the touch connection group is Y / N; when N touch sensors in the touch unit are arranged in the same column, the number of receivers in the touch connection group is X / N. The receiving end of each of the touch connection groups is connected to the touch sensor arranged in the a-th row of the corresponding touch unit; Where 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.

4. The touch display panel as described in claim 1, characterized in that, 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, and the other end of the at least two receiving signal lines serves as a receiving end and is connected to the corresponding touch sensor. The other end of the first output signal line serves as an output end and is connected to the control chip.

5. The touch display panel as described in any one of claims 1-3, 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 simultaneously. 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.

6. The touch display panel as described in claim 5, characterized in that, The auxiliary connecting block is ring-shaped and is arranged around the touch sensor.

7. The touch display panel as described in claim 5, characterized in that, The touch sensor array is divided into multiple touch units, each of which includes at least two touch sensors. The auxiliary connection block is connected to all touch sensors in the corresponding touch unit, and all touch sensors in the touch unit have different sizes.

8. A display device, characterized in that, It includes a driving circuit and a touch display panel as described in any one of claims 1-7, wherein the driving circuit is used to drive the touch display panel.

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