Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a touch electrode and a touch wire; the display panel is provided with a plurality of first panel touch terminals and a plurality of panel display terminals in a chip binding area, and is provided with a plurality of second panel touch terminals and a plurality of panel binding terminals in a circuit board binding area; the first panel touch control terminal and the second panel touch control terminal are electrically connected with the touch control wire; the display panel further comprises a driving chip and a circuit board. The driving chip comprises a chip display terminal electrically connected with the panel display terminal. The circuit board comprises circuit board binding terminals electrically connected with the panel binding terminals; the driving chip or the circuit board further comprises a plurality of touch binding terminals, and the touch binding terminals are electrically connected with the first panel touch terminals or the second panel touch terminals. Wherein the first panel touch control terminal and the second panel touch control terminal are connected with the touch control wire, so that the adaptability and compatibility of the display panel can be improved while the touch control function is realized.

Description

Technical Field

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

[0002] With the continuous development of display technology, display panels have been widely used in people's production and daily life. Among them, display panels with touch functionality are more widely used. Touch display panels combine a touch panel and a display panel, enabling the display panel to simultaneously display and sense touch input.

[0003] To better meet people's needs, the wiring in the display panel can be finely adjusted to ensure a better overall effect of the touch display panel. Summary of the Invention

[0004] This invention provides a display panel and a display device. By adjusting the first panel touch terminal and the second panel touch terminal to be connected to touch wiring, and combining the setting position of the touch binding terminal, the adaptability and compatibility of the display panel can be improved while satisfying the touch function.

[0005] In a first aspect, embodiments of the present invention provide a display panel, including connected touch electrodes and touch traces;

[0006] The display panel also includes a chip bonding area and a circuit board bonding area;

[0007] The chip bonding area is provided with multiple first panel touch terminals and multiple panel display terminals, and the circuit board bonding area is provided with multiple second panel touch terminals and multiple panel bonding terminals; both the first panel touch terminals and the second panel touch terminals are electrically connected to the touch wiring.

[0008] The display panel further includes a driver chip and a circuit board. The driver chip includes at least a plurality of chip display terminals, which are electrically connected to the panel display terminals. The circuit board includes at least a plurality of circuit board bonding terminals, which are electrically connected to the panel bonding terminals.

[0009] The driver chip or the circuit board also includes a plurality of touch bonding terminals, which are electrically connected to the first panel touch terminal or the second panel touch terminal.

[0010] In a second aspect, embodiments of the present invention provide a display device including the display panel described in the first aspect.

[0011] This invention provides a display panel. The display panel includes multiple first panel contact terminals in a chip bonding area and multiple second panel contact terminals in a circuit board bonding area. Both the first and second panel touch terminals are electrically connected to touch traces. Furthermore, the display panel also includes touch bonding terminals, which are located on a driver chip or on a circuit board. When the touch bonding terminals are electrically connected to the first or second panel touch terminals, touch signal transmission can be achieved, thereby realizing the touch function of the display panel. By adjusting the connection of both the first and second panel touch terminals to touch traces, and considering the placement of the touch bonding terminals, the adaptability and compatibility of the display panel can be improved while still achieving the touch function.

[0012] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of exemplary embodiments of the present invention, the accompanying drawings used in describing the embodiments are briefly introduced below. Obviously, the accompanying drawings described are only a portion of the drawings of the embodiments to be described in this invention, and not all of the drawings. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the first type of display panel provided in an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the second type of display panel provided in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the third type of display panel provided in the embodiments of the present invention;

[0017] Figure 4 yes Figure 3 An enlarged schematic diagram of a structure in region A;

[0018] Figure 5 yes Figure 3 A schematic diagram of a cross-section along section line B-B';

[0019] Figure 6 yes Figure 3 A schematic diagram of a cross-section along section line C-C';

[0020] Figure 7This is a schematic diagram of the structure of the fourth type of display panel provided in the embodiments of the present invention;

[0021] Figure 8 yes Figure 2 A schematic diagram of a cross-section along section line D-D';

[0022] Figure 9 yes Figure 2 A schematic diagram of a cross-section along section line E-E';

[0023] Figure 10 This is a schematic diagram of the structure of the fifth type of display panel provided in the embodiments of the present invention;

[0024] Figure 11 yes Figure 2 The first enlarged schematic diagram of the middle region F;

[0025] Figure 12 yes Figure 11 A schematic diagram of the first type of cross section along the central section line G-G';

[0026] Figure 13 yes Figure 11 A schematic diagram of the second type of cross section along the central section line G-G';

[0027] Figure 14 yes Figure 11 A schematic diagram of the third type of cross section along the central section line G-G';

[0028] Figure 15 yes Figure 2 The second enlarged schematic diagram of the middle region F;

[0029] Figure 16 yes Figure 2 The third enlarged schematic diagram of the middle region F;

[0030] Figure 17 yes Figure 15 A schematic diagram of a cross-section along section line H-H';

[0031] Figure 18 yes Figure 1 A schematic diagram of a cross section along section line I-I';

[0032] Figure 19 yes Figure 1 A schematic diagram of a cross-section along section line J-J';

[0033] Figure 20 This is a schematic diagram of the structure of a display module provided in an embodiment of the present invention. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a system, product, or device comprising a series of units is not necessarily limited to those steps or units explicitly listed, but may include other units not explicitly listed or inherent to such products or devices.

[0036] Various modifications and variations can be made to this invention without departing from its spirit or scope, as will be apparent to those skilled in the art. Therefore, this invention is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this invention can be combined with each other without contradiction.

[0037] Figure 1 This is a schematic diagram of the structure of the first type of display panel provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the second type of display panel provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of the third type of display panel provided in the embodiment of the present invention, for reference. Figures 1 to 3As shown, the display panel 10 includes connected touch electrodes 100 and touch traces 200; the display panel 10 also includes a chip bonding area 300 and a circuit board bonding area 400; the chip bonding area 300 is provided with a plurality of first panel touch terminals 301 and a plurality of panel display terminals 302, and the circuit board bonding area 400 is provided with a plurality of second panel touch terminals 401 and a plurality of panel bonding terminals 402; the first panel touch terminals 301 and the second panel touch terminals 401 are both connected to the touch traces 200; the display panel 10 also includes The device includes a driver chip 500 and a circuit board 600. The driver chip 500 includes at least a plurality of chip display terminals 510, which are electrically connected to the panel display terminals 302. The circuit board 600 includes at least a plurality of circuit board bonding terminals 610, which are electrically connected to the panel bonding terminals 402. The driver chip 500 or the circuit board 600 also includes a plurality of touch bonding terminals 700, which are electrically connected to the first panel touch terminal 301 or the second panel touch terminal 401.

[0038] Among them, reference Figures 1 to 3 As shown, the display panel 10 includes touch electrodes 100 and touch traces 200, which are electrically connected. The touch electrodes 100 receive touch drive signals and generate touch sensing signals based on external touch input. The touch traces 200 transmit the touch drive signals and touch sensing signals to the driver chip 500 or circuit board 600, allowing the driver chip 500 or circuit board 600 to determine the touch location and / or touch pressure, thereby enabling the touch function of the display panel 10. Furthermore, the touch traces 200 can be located on one side of the display panel 100, for example... Figure 1 As shown, the touch traces 200 can also be positioned on both sides of the display panel 100, for example... Figure 2 and Figure 3 As shown.

[0039] It should be noted that, Figure 1 , Figure 2 and Figure 3 In the display panel 100, only a portion of the touch electrodes 100 and a portion of the touch traces 200 are shown, and only the connection relationship between a portion of the touch electrodes 100 and the touch traces 200 is shown. This is used to show the position of the touch electrodes 100 and the touch traces 200 and the connection relationship between them, and does not represent the actual number of touch electrodes 100 and touch traces 200.

[0040] Further reference Figures 1 to 3As shown, the display panel 10 also includes a chip bonding area 300 and a circuit board bonding area 400. The display panel 10 is bonded to the driver chip 500 at the chip bonding area 300 and to the circuit board 600 at the circuit board bonding area 400. For details, refer to... Figures 1 to 3 As shown, the display panel 10 includes multiple panel display terminals 302 disposed in the chip bonding area 300, and the driver chip 500 includes multiple chip display terminals 510. The chip display terminals 510 are electrically connected to the panel display terminals 302, thereby achieving the bonding connection between the driver chip 500 and the display panel 10. Optionally, the driver chip 500 can be a display driver chip or a touch and display driver integrated chip. Further, refer to... Figures 1 to 3 As shown, the display panel 10 also includes a plurality of panel bonding terminals 402 disposed in the circuit board bonding area 400, and the circuit board 600 includes a plurality of circuit board bonding terminals 610. The circuit board bonding terminals 610 are electrically connected to the panel bonding terminals 402, thereby realizing the bonding connection between the circuit board 600 and the display panel 10. Optionally, the circuit board 600 may include a flexible printed circuit (FPC).

[0041] Further reference Figures 1 to 3 As shown, the display panel 10 also includes a plurality of first panel touch terminals 301 disposed in the chip bonding area 300, and a plurality of second panel touch terminals 401 disposed in the circuit board bonding area 400. Both the first panel touch terminals 301 and the second panel touch terminals 401 are connected to the touch traces 200. It should be noted that the number of first panel touch terminals 301 and second panel touch terminals 401 can vary. The figure only shows a portion of the first panel touch terminals 301 and second panel touch terminals 401 to illustrate their placement. The number can be adjusted adaptively according to the actual needs of the display panel 10, and this embodiment of the invention does not impose a specific limitation on this. Furthermore, the display panel 10 also includes a plurality of touch bonding terminals 700, which can be disposed on the driver chip 500 or on the circuit board 600.

[0042] As one possible implementation method, refer to Figure 2As shown, the touch bonding terminal 700 is located in the driver chip 500. The touch bonding terminal 700 is electrically connected to the first panel contact terminal 301, thereby realizing the electrical connection between the touch bonding terminal 700 and the touch electrode 100 through the first panel contact terminal 301, the touch trace 200, and the driver chip 500. In this case, the driver chip 500 bonded to the chip bonding area 300 can be a Touch and Display Driver Integration (TDDI) chip, which transmits the signals transmitted by the touch trace 200 to the driver chip 500, thereby realizing the touch function of the display panel 10.

[0043] As another feasible implementation method, refer to Figure 3 As shown, the touch-binding terminal 700 is located on the circuit board 600. The touch-binding terminal 700 is electrically connected to the second panel contact terminal 401, thereby achieving an electrical connection between the touch-binding terminal 700 and the touch electrode 100 via the second panel contact terminal 401, the touch trace 200, and the circuit board 600. In this configuration, a touch driver chip can be mounted on the circuit board 600, transmitting signals from the touch trace 200 to the touch driver chip on the circuit board 600, thus enabling the touch function of the display panel 10. Figure 3 In this context, the driver chip 500, which is bonded to the chip bonding area 300, can be a display driver IC (DDIC).

[0044] Furthermore, in combination Figure 2 and Figure 3As shown, regardless of whether the touch bonding terminal 700 of the display panel 10 is located on the driver chip 500 or on the circuit board 600, the touch trace 200 in the display panel 10 is connected to the first panel touch terminal 301 and the second panel touch terminal 401. Thus, if the driver chip 500 bonded to the display panel 10 includes the touch bonding terminal 700, the touch trace 200 is connected to the touch bonding terminal 700 through the first panel touch terminal 301, transmitting the touch signal to the driver chip 500; the touch trace 200 and the second panel touch terminal 401 can be understood as the touch signal transmitted by the touch trace 200 floating at the second panel touch terminal 401. In this case, the driver chip 500 can be a TDDI chip, meaning the display panel and the TDDI chip combine to achieve the touch and display functions of the display panel. If the circuit board 600 bonded to the display panel 10 includes a touch bonding terminal 700, then the touch trace 200 is connected to the touch bonding terminal 700 through the second panel touch terminal 401, transmitting touch signals to the circuit board 600. The touch trace 200 and the first panel touch terminal 301 can be understood as the touch signal transmitted by the touch trace 200 floating at the first panel touch terminal 301. In this case, the driver chip 500 can be a DDIC chip, meaning the display panel and the DDIC chip combine to achieve the touch and display functions of the display panel. Thus, by adjusting the connection between the first panel touch terminal 301 and the second panel touch terminal 401 in the display panel 10 and the touch trace 200, the display panel can be bonded to a TDDI chip or a DDIC, satisfying the touch function while also improving the adaptability and compatibility of the display panel 10.

[0045] In summary, the display panel provided in this embodiment of the invention includes multiple first panel contact terminals in the chip bonding area and multiple second panel contact terminals in the circuit board bonding area. Both the first panel touch terminals and the second panel touch terminals are electrically connected to touch traces. Furthermore, the display panel also includes touch bonding terminals, which are located on the driver chip or on the circuit board. The touch bonding terminals are electrically connected to the first panel touch terminals or to the second panel touch terminals. This means that the display panel provided in this embodiment of the invention can be adapted to a touch and display driver integrated chip or a display driver chip, thus improving the adaptability and compatibility of the display panel while fulfilling the touch function requirements.

[0046] Continue to refer to Figures 1 to 3 As shown, the number of touch terminals 301 on the first panel is the same as the number of touch terminals 401 on the second panel.

[0047] Among them, reference Figure 2As shown, when the touch bonding terminal 700 is located in the driver chip 500, the connection between the first panel touch terminal 301 and the touch bonding terminal 700 can be guaranteed, ensuring stable transmission of touch signals and realizing the touch function of the display panel 10. (Reference) Figure 3 As shown, when the touch bonding terminal 700 is set on the circuit board 600, the connection effect between the second panel touch terminal 401 and the touch bonding terminal 700 can be guaranteed, ensuring stable transmission of touch signals and realizing the touch function of the display panel 10. The first panel touch terminal 301 serves as the connection terminal between the touch trace 200 and the driver chip 500, and the second panel touch terminal 401 serves as the connection terminal between the touch trace 200 and the circuit board 600. In order to ensure the consistency of the signal transmission of the touch trace 200 under any chip setting method, the number of the first panel touch terminals 301 and the number of the second panel touch terminals 401 can be set to be the same. This ensures that good touch function can be guaranteed regardless of whether the display panel is adapted to a touch and display driver integrated chip or an integrated display driver chip.

[0048] Figure 4 yes Figure 3 A magnified structural diagram of region A in the middle, for reference. Figures 1 to 4 As shown, along the first direction X1, the length of the second panel touch terminal 401 is L1; along the second direction X2, the length of the second panel touch terminal 401 is L2; ​​along the first direction X1, the distance between two adjacent second panel touch terminals 401 is L3; the first direction X1 and the second direction X2 intersect; along the first direction X1, the length of the panel bonding terminal 402 is L4; along the second direction X2, the length of the panel bonding terminal 402 is L5; along the first direction X1, the distance between two adjacent panel bonding terminals 402 is L6; wherein, |L1-L4| / L1≤20%, |L2-L5| / L2≤20%, |L3-L6| / L3≤20%.

[0049] Further reference Figures 1 to 3 As shown, the second panel touch terminal 401 and panel bonding terminal 402 in the circuit board bonding area 400 have similar or the same size, which can reflect the balance of the bonding terminal settings in the circuit board bonding area 400.

[0050] For details, please refer to Figure 4As shown, along the first direction X1, the length of the second panel touch terminal 401 is L1, and the length of the panel bonding terminal 402 is L4, where L1 and L4 satisfy |L1-L4| / L1≤20%, meaning that L1 and L4 are the same or similar in size. Further, along the second direction X2, the length of the second panel touch terminal 401 is L2, and the length of the panel bonding terminal 402 is L5, where L2 and L5 satisfy |L2-L5| / L2≤20%, meaning that L2 and L5 are the same or similar in size. Further, along the first direction X1, the distance between two adjacent second panel touch terminals 401 is L3, and the distance between two adjacent panel bonding terminals 402 is L6; where |L1-L4| / L1≤20%, and L3 and L6 satisfy |L3-L6| / L3≤20%, meaning that L3 and L6 are the same or similar in size. By limiting the size and spacing of the second panel touch terminal 401 and the panel bonding terminal 402, the arrangement of the second panel touch terminal 401 and the panel bonding terminal 402 in the circuit board bonding area 400 is balanced.

[0051] Figure 5 yes Figure 3 A schematic diagram of a cross-section along section line B-B'. Figure 6 yes Figure 3 A schematic diagram of a cross-section along section line C-C', for reference. Figure 3 , Figure 5 and Figure 6 As shown, the driver chip 500 includes a display driver chip 500A, which is insulated from the first panel touch terminal 301; the circuit board 600 includes a touch bonding terminal 700, which is electrically connected to the second panel touch terminal 401.

[0052] Among them, reference Figure 3 As shown, the driver chip 500 may include a display driver chip 500A. In this case, the touch binding terminal 700 is disposed on the circuit board 600. The touch binding terminal 700 is electrically connected to the second panel touch terminal 401. The touch signal is transmitted to the circuit board 600 and not to the display driver chip 500A.

[0053] For details, please refer to Figure 5 As shown, the display driver chip 500A is electrically connected to the panel display terminal 302 via the chip display terminal 510, enabling the display driver chip 500A to access the display panel 10. However, the display driver chip 500A is insulated from the first panel touch terminal 301, wherein along the thickness direction of the display panel 10, the display driver chip 500A can cover the first panel touch terminal 301, such as... Figure 5As shown; or along the thickness direction of the display panel 10, the display driver chip 500A does not cover the first panel touch terminal 301 (not shown in the figure). Since the first panel touch terminal 301 and the display driver chip 500A do not contact each other, the display driver chip 500A has flexibility in its placement position in the chip bonding area 300.

[0054] refer to Figure 6 As shown, the circuit board 600 is electrically connected to the panel bonding terminal 402 through the circuit board bonding terminal 610, so that the circuit board 600 can be connected to the display panel 10. At the same time, the touch bonding terminal 700 on the circuit board 600 is also bonded and electrically connected to the second panel touch terminal 401 to realize the transmission of touch signals of the display panel 10 and realize the touch function of the display panel 10.

[0055] Continue to refer to Figure 3 As shown, the display panel 10 also includes a touch driver chip 800, which is electrically connected to the circuit board 600.

[0056] Further reference Figure 3 As shown, the display panel 10 includes a touch driver chip 800. The touch driver chip 800 can understand the touch position and / or the touch pressure based on the signals transmitted by the touch trace 200, thereby realizing the touch function of the display panel 10.

[0057] The touch trace 200 is connected to the touch terminal 401 on the second panel, and the touch terminal 401 is connected to the touch bonding terminal 700 on the circuit board 600. This means that the touch signals transmitted by the touch trace 200 are transmitted to the circuit board 600. The touch driver chip 800 is electrically connected to the circuit board 600 and is used to acquire the touch signals transmitted to the circuit board 600, thereby enabling the touch function of the display panel 10.

[0058] Figure 7 This is a schematic diagram of the structure of the fourth type of display panel provided in the embodiments of the present invention, for reference. Figure 7 As shown, the chip bonding area 300 is also provided with a first panel isolation terminal 303, which is located between the first panel touch terminal 301 and the panel display terminal 302; the display driver chip 500A also includes a chip isolation terminal 520, which is electrically connected to the first panel isolation terminal 303, and the potential signal of the chip isolation terminal 520 is a fixed potential signal.

[0059] Further reference Figure 7As shown, the chip bonding area 300 is also provided with a first panel isolation terminal 303, which is located between the first panel touch terminal 301 and the panel display terminal 302. Correspondingly, the display driver chip 500A includes a chip isolation terminal 520, which is electrically connected to the first panel isolation terminal 303. The potential signal of the chip isolation terminal 520 is a fixed potential signal, so the electrical signal in the first panel isolation terminal 303 is also a fixed potential signal. Thus, the first panel isolation terminal 303 is equivalent to a potential shielding structure. Since the touch trace 200 is connected to the first panel touch terminal 301 and the second panel touch terminal 401 respectively, touch signals are still transmitted on the first panel touch terminal 301 even if it is not bonded to the touch bonding terminal 700. Therefore, transmitting a fixed potential signal in the first panel isolation terminal 303 between the first panel touch terminal 301 and the panel display terminal 302 can avoid interference between the first panel touch terminal 301 and the panel display terminal 302, and can ensure the stability and reliability of the display panel 10.

[0060] Figure 8 yes Figure 2 A schematic diagram of a cross-section along section line D-D'. Figure 9 yes Figure 2 A schematic diagram of a cross-section along section line E-E', for reference. Figure 2 , Figure 8 and Figure 9 As shown, the driver chip 500 includes a touch and display driver integrated chip 500B; the display touch integrated driver chip 500B includes a touch bonding terminal 700, which is electrically connected to the first panel touch terminal 301; the circuit board 600 is insulated from the second panel touch terminal 401.

[0061] Further reference Figure 2 As shown, the display panel 10 includes a touch and display driver integrated chip 500B. In this case, a touch bonding terminal 700 is disposed at the display touch integrated driver chip 500B. The touch bonding terminal 700 is electrically connected to the first panel touch terminal 301, and the touch signal is transmitted to the display touch integrated driver chip 500B. The touch and display driver integrated chip 500B can understand the touch position and / or touch pressure based on the signals transmitted by the touch trace 200, thereby realizing the touch function of the display panel 10.

[0062] For details, please refer to Figure 8As shown, the touch and display driver integrated chip 500B is electrically connected to the panel display terminal 302 through the chip display terminal 510, enabling the display driver chip 500A to access the display panel 10. Simultaneously, the touch bonding terminal 700 in the touch and display driver integrated chip 500B is also connected to the first panel touch terminal 301, enabling the transmission of touch signals from the display panel 10 and realizing the touch function of the display panel 10.

[0063] refer to Figure 9 As shown, the circuit board 600 is electrically connected to the panel bonding terminal 402 via the circuit board bonding terminal 610, enabling the circuit board 600 to connect to the display panel 10. However, the circuit board 600 is insulated from the second panel contact terminal 401. Along the thickness direction of the display panel 10, the circuit board 600 can cover the second panel touch terminal 401, such as... Figure 9 As shown; or along the thickness direction of the display panel 10, the circuit board 600 does not cover the second panel touch terminal 401 (not shown in the figure). Since the second panel touch terminal 401 and the circuit board 600 do not contact each other, the circuit board 600 has flexibility in its placement position in the circuit board bonding area 400.

[0064] Figure 10 This is a schematic diagram of the structure of the fifth type of display panel provided in the embodiment of the present invention, for reference. Figure 10 As shown, the circuit board bonding area 400 is also provided with a second panel isolation terminal 403, which is located between the second panel touch terminal 401 and the panel bonding terminal 402; the circuit board 600 also includes a circuit board isolation terminal 620, which is electrically connected to the second panel isolation terminal 403, and the potential signal of the circuit board isolation terminal 620 is a fixed potential signal.

[0065] Further reference Figure 10As shown, the circuit board bonding area 400 is also provided with a second panel isolation terminal 403, which is located between the second panel touch terminal 401 and the panel bonding terminal 402. Correspondingly, the circuit board 600 includes a circuit board isolation terminal 620, which is electrically connected to the second panel isolation terminal 403. The potential signal of the circuit board isolation terminal 620 is a fixed potential signal, so the electrical signal in the second panel isolation terminal 403 is also a fixed potential signal. Thus, the second panel isolation terminal 403 is equivalent to a potential shielding structure. Since the touch trace 200 is connected to the first panel touch terminal 301 and the second panel touch terminal 401 respectively, touch signals are still transmitted on the second panel touch terminal 401 even if it is not bonded to the touch bonding terminal 700. Therefore, by transmitting a fixed potential signal in the second panel isolation terminal 403 between the second panel touch terminal 401 and the panel bonding terminal 402, interference between the second panel touch terminal 401 and the panel bonding terminal 402 can be avoided, thus ensuring the stability and reliability of the display panel 10.

[0066] Figure 11 yes Figure 2 The first enlarged schematic diagram of the middle region F, see reference. Figure 2 and Figure 11 As shown, the touch trace 200 includes a touch trace bus 200A, a first touch trace branch 200B, and a second touch trace branch 200C; the first touch trace branch 200B is electrically connected to the touch trace bus 200A and the first panel touch terminal 301, and the second touch trace branch 200C is electrically connected to the touch trace bus 200A and the second panel touch terminal 401.

[0067] Further reference Figure 11As shown, the touch trace 200 includes a touch trace bus 200A, a first touch trace branch 200B, and a second touch trace branch 200C. The touch trace bus 200A is located on the side of the first touch trace branch 200B and the second touch trace branch 200C closest to the touch electrode 100. The first touch trace branch 200B and the second touch trace branch 200C can be understood as two branch traces of the touch trace bus 200A. The first touch trace branch 200B is electrically connected to the first panel touch terminal 301, and the second touch trace branch 200C is electrically connected to the second panel touch terminal 401. In other words, the touch electrode 100 can transmit touch signals through the touch wiring bus 200A, the first touch wiring branch 200B and the first panel touch terminal 301 to ensure the touch function of the display panel 10; or the touch electrode 100 can also transmit touch signals through the touch wiring bus 200A, the second touch wiring branch 200C and the second panel touch terminal 401 to ensure the touch function of the display panel 10.

[0068] It should be noted that, Figure 11 yes Figure 2 An enlarged schematic diagram of the touch trace 200 in the display panel 10. Figure 3 The touch traces 200 of the display panel 10 can also be composed of a touch trace bus 200A, a first touch trace branch 200B, and a second touch trace branch 200C, which will not be illustrated in detail.

[0069] Figure 12 yes Figure 11 A schematic diagram of the first type of cross-section along the central section line G-G'. Figure 13 yes Figure 11 A schematic diagram of the second type of cross-section along section line G-G'. Figure 14 yes Figure 11 A schematic diagram of the third section along section line G-G', see reference. Figure 2 , Figures 11 to 14 As shown, the first touch trace branch 200B and / or the second touch trace branch 200C are configured on the same layer as the touch trace bus 200A.

[0070] Furthermore, the film layer settings for the touch trace bus 200A, the first touch trace branch 200B, and the second touch trace branch 200C are diverse, reflecting the flexibility of the touch trace 200 settings.

[0071] For details, please refer to Figure 12 As shown, the touch trace bus 200A, the first touch trace branch 200B, and the second touch trace branch 200C are arranged on the same layer; or refer to... Figure 13 As shown, the touch trace bus 200A and the second touch trace branch 200C are arranged on the same layer; or refer to Figure 14 As shown, the touch trace bus 200A and the first touch trace branch 200B are arranged on the same layer. By adjusting at least one of the first touch trace branch 200B and the second touch trace branch 200C to be arranged on the same layer as the touch trace bus 200A, it is beneficial to reduce the number of film layers on the display panel 10, which is conducive to the thinner design of the display panel 10. At the same time, traces located on the same film layer can be fabricated using the same process, which helps to reduce the manufacturing cost of the display panel 10.

[0072] Figure 15 yes Figure 2 The second enlarged schematic diagram of the middle region F. Figure 16 yes Figure 2 The third enlarged schematic diagram of the middle region F. Figure 17 yes Figure 15 A schematic diagram of a cross-section along section line H-H', for reference. Figure 2 , Figures 15 to 17 As shown, the touch trace 200 includes a first touch trace 210 and a second touch trace 220. Both the first touch trace 210 and the second touch trace 220 are electrically connected to the touch electrode 100. The first touch trace 210 is electrically connected to the first panel touch terminal 301, and the second touch trace 220 is electrically connected to the second panel touch terminal 401. The first touch trace 210 and the second touch trace 220 are disposed on different layers.

[0073] Among them, reference Figure 15 and Figure 16 As shown, the touch trace 200 includes a first touch trace 210 and a second touch trace 220. The first touch trace 210 connects the touch electrode 100 and the first panel touch terminal 301, and the second touch trace 220 connects the touch electrode 100 and the second panel touch terminal 401. By splitting the touch trace 200 into two branches, the transmission of touch signals is ensured, thus guaranteeing the touch function of the display panel 10. Further, refer to... Figure 17 As shown, in order to ensure the wiring of the first touch trace 210 and the second touch trace 220 on the display panel 10, the first touch trace 210 and the second touch trace 220 are set on different layers. While ensuring the transmission of touch signals, short circuits between the first touch trace 210 and the second touch trace 220 can also be avoided, thus ensuring the reliability of touch signal transmission. Figure 17 The example given is that the first touch trace 210 is located on the light-emitting side of the second touch trace 220 near the display panel 10. The specific positions of the first touch trace 210 and the second touch trace 220 can be adjusted accordingly.

[0074] Further reference Figure 16As shown, along the thickness direction of the display panel 10, the first touch trace 210 and the second touch trace 220 are not overlapped. (Reference) Figure 15 As shown, along the thickness direction of the display panel 10, a portion of the first touch trace 210 overlaps with a portion of the second touch trace 220. This allows for flexibility in the arrangement of the touch traces 200, and the positions of the first touch trace 210 and the second touch trace 220 can be adjusted according to actual needs.

[0075] It should be noted that, Figure 15 and Figure 16 yes Figure 2 An enlarged schematic diagram of the touch trace 200 in the display panel 10. Figure 3 The touch traces 200 of the display panel 10 can also be composed of the first touch trace 210 and the second touch trace 220, which will not be illustrated in detail.

[0076] Figure 18 yes Figure 1 A schematic diagram of a cross-section along section line I-I'. Figure 19 yes Figure 1 A schematic diagram of a cross-section along section line J-J', for reference. Figure 1 , Figure 18 and Figure 19 As shown, the display panel 10 also includes a substrate 1000 and a driving circuit structure, wherein the driving circuit structure is stacked with at least two metal layers 2000; the touch electrode 100 and the touch trace 200 are located on the side of the driving circuit structure away from the substrate 1000; the at least two metal layers 2000 include a first metal layer 2001 and at least one second metal layer 2002, wherein the second metal layer 2002 is located on the side of the first metal layer 2001 away from the substrate 1000, and the first panel touch terminal 301 and the second panel touch terminal 401 are located on the first metal layer 2001; the display panel 10 also includes a touch bridging structure 3000, which is located on the second metal layer 2002, and the touch trace 200 is electrically connected to the first panel touch terminal 301 or the second panel touch terminal 401 via the touch bridging structure 3000.

[0077] Further reference Figure 18 and Figure 19 As shown, the display panel 10 also includes a substrate 1000 and a driving circuit structure (not specifically shown in the figure). The driving circuit structure can be a pixel driving circuit or a bezel driving circuit, etc. The pixel driving circuit is used to drive the light-emitting elements (not specifically shown in the figure) in the display panel 10 to emit light and display, so as to realize the display function of the display panel 10. The bezel driving circuit is used to provide relevant signals to the pixel driving circuit and also to ensure the normal display of the light-emitting elements and ensure the display function of the display panel 10.

[0078] The driving circuit structure consists of at least two stacked metal layers 2000, while the touch electrode 100 and touch trace 200 are located on the side of the driving circuit structure away from the substrate 1000. The specific number of metal layers 2000 is not specified in this embodiment; it can be three or four layers, etc., and can be adaptively adjusted according to the actual needs of the display panel 10. (Reference) Figure 18 and Figure 19 As shown, an example is given where the touch trace 200 is located on the side of at least two metal layers 2000 away from the substrate 1000.

[0079] Further reference Figure 18 and Figure 19 As shown, the at least two metal layers 2000 include a first metal layer 2001 and at least one second metal layer 2002. Figure 18 and Figure 19 The following example illustrates the use of a display panel 10 comprising a first metal layer 2001 and two second metal layers 2002. The first metal layer 2001 is located on the side of the second metal layer 2002 closest to the substrate 1000.

[0080] Furthermore, in combination Figure 18 As shown, the first panel touch terminal 301 is disposed on the first metal layer 2001. To achieve the electrical connection between the touch trace 200 and the first panel touch terminal 301, the display panel 10 also includes a touch bridging structure 3000. (Reference) Figure 18 As shown, the touch bridging structure 3000 is disposed on the second metal layer 2002, and the touch trace 200 is electrically connected to the first panel touch terminal 301 via the touch bridging structure 3000.

[0081] Furthermore, in combination Figure 19 As shown, the second panel touch terminal 401 is disposed on the first metal layer 2001. To achieve the electrical connection between the touch trace 200 and the second panel touch terminal 401, the display panel 10 also includes a touch bridging structure 3000. (Reference) Figure 19 As shown, the touch bridging structure 3000 is disposed on the second metal layer 2002, and the touch trace 200 is electrically connected to the second panel touch terminal 401 via the touch bridging structure 3000.

[0082] refer to Figure 2 and Figure 3 As shown, the touch electrode 100 includes a touch driving electrode 110 and a touch sensing electrode 120; the touch trace 200 includes a touch driving trace 201 and a touch sensing trace 202, the touch driving trace 201 is electrically connected to the touch driving electrode 110, and the touch sensing trace 202 is electrically connected to the touch sensing electrode 120.

[0083] Further reference Figure 2 and Figure 3 As shown, the touch electrode 100 may include a touch driving electrode 110 and a touch sensing electrode 120. The touch driving electrode 110 and the touch sensing electrode 120 are the core components of capacitive touch technology. Together they form a capacitive coupling system for detecting the touch position of a finger or stylus on the display panel 10.

[0084] The touch trace 200 includes a touch driving trace 201 and a touch sensing trace 202. The touch driving trace 201 is electrically connected to the touch driving electrode 110, and the touch sensing trace 202 is electrically connected to the touch sensing electrode 120. The touch driving trace 201 and the touch sensing trace 202 transmit touch signals to the driver chip 500 or the circuit board 600 through the first panel contact terminal 301 or the second panel contact terminal 401, thereby realizing the touch function of the display panel 10.

[0085] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 20 This is a schematic diagram of the structure of a display module provided in an embodiment of the present invention, as shown below. Figure 20 As shown, the display device 1 includes the display panel 10 described in any of the above embodiments. Therefore, the display device 1 provided in this embodiment of the invention possesses the corresponding beneficial effects described in the above embodiments, which will not be repeated here. The display device 1 can be an electronic device such as a mobile phone, computer, smart wearable device (e.g., smartwatch), and in-vehicle display device.

[0086] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, This includes the connected touch electrodes and touch traces; The display panel also includes a chip bonding area and a circuit board bonding area; The chip bonding area is provided with multiple first panel touch terminals and multiple panel display terminals, and the circuit board bonding area is provided with multiple second panel touch terminals and multiple panel bonding terminals; both the first panel touch terminals and the second panel touch terminals are electrically connected to the touch wiring. The display panel further includes a driver chip and a circuit board. The driver chip includes at least a plurality of chip display terminals, which are electrically connected to the panel display terminals. The circuit board includes at least a plurality of circuit board bonding terminals, which are electrically connected to the panel bonding terminals. The driver chip or the circuit board also includes a plurality of touch bonding terminals, which are electrically connected to the first panel touch terminal or the second panel touch terminal.

2. The display panel according to claim 1, characterized in that, The number of the first panel touch terminals is the same as the number of the second panel touch terminals.

3. The display panel according to claim 1, characterized in that, Along the first direction, the length of the second panel touch terminal is L1; along the second direction, the length of the second panel touch terminal is L2; ​​along the first direction, the distance between two adjacent second panel touch terminals is L3; the first direction and the second direction intersect. Along the first direction, the length of the panel bonding terminal is L4; along the second direction, the length of the panel bonding terminal is L5; along the first direction, the distance between two adjacent panel bonding terminals is L6. Among them, |L1-L4| / L1≤20%, |L2-L5| / L2≤20%, and |L3-L6| / L3≤20%.

4. The display panel according to claim 1, characterized in that, The driving chip includes a display driving chip, which is insulated from the first panel touch terminal. The circuit board includes the touch bonding terminal, which is electrically connected to the second panel touch terminal.

5. The display panel according to claim 4, characterized in that, The display panel also includes a touch driver chip, which is electrically connected to the circuit board.

6. The display panel according to claim 4, characterized in that, The chip bonding area is also provided with a first panel isolation terminal, which is located between the first panel touch terminal and the panel display terminal; The display driver chip also includes a chip isolation terminal, which is electrically connected to the first panel isolation terminal, and the potential signal of the chip isolation terminal is a fixed potential signal.

7. The display panel according to claim 1, characterized in that, The driver chip includes an integrated touch and display driver chip; The display touch integrated driver chip includes the touch bonding terminal, which is electrically connected to the first panel touch terminal; The circuit board is insulated from the second panel touch terminal.

8. The display panel according to claim 7, characterized in that, The circuit board bonding area is also provided with a second panel isolation terminal, which is located between the second panel touch terminal and the panel bonding terminal; The circuit board also includes a circuit board isolation terminal, which is electrically connected to the second panel isolation terminal, and the potential signal of the circuit board isolation terminal is a fixed potential signal.

9. The display panel according to claim 1, characterized in that, The touch traces include a touch trace bus, a first touch trace branch, and a second touch trace branch. The first touch trace branch is electrically connected to the touch trace bus and the first panel touch terminal, respectively, and the second touch trace branch is electrically connected to the touch trace bus and the second panel touch terminal, respectively.

10. The display panel according to claim 9, characterized in that, The first touch trace branch and / or the second touch trace branch are configured on the same layer as the touch trace bus.

11. The display panel according to claim 1, characterized in that, The touch trace includes a first touch trace and a second touch trace, both of which are electrically connected to the touch electrode. The first touch trace is electrically connected to the first panel touch terminal, and the second touch trace is electrically connected to the second panel touch terminal; The first touch trace and the second touch trace are arranged in different layers.

12. The display panel according to claim 1, characterized in that, The display panel further includes a substrate and a driving circuit structure, wherein the driving circuit structure is stacked with at least two metal layers; the touch electrode and the touch trace are located on the side of the driving circuit structure away from the substrate; The at least two metal layers include a first metal layer and at least one second metal layer, the second metal layer being located on the side of the first metal layer away from the substrate, and the first panel touch terminal and the second panel touch terminal being located on the first metal layer; The display panel further includes a touch bridging structure located in the second metal layer, and the touch traces are electrically connected to the first panel touch terminal or the second panel touch terminal via the touch bridging structure.

13. The display panel according to claim 1, characterized in that, The touch electrode includes a touch driving electrode and a touch sensing electrode; The touch traces include touch driving traces and touch sensing traces. The touch driving traces are electrically connected to the touch driving electrode, and the touch sensing traces are electrically connected to the touch sensing electrode.

14. A display device, characterized in that, Includes the display panel as described in any one of claims 1-13.

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