Touch display panel and touch display device

Abstract

A touch display panel comprising: a first touch electrode array (210, 510, 910) comprising M first touch electrodes, including 1st to Mth first touch electrodes (211, 311, 312, 313, 511) arranged along a first direction (D1), where M is an integer greater than 2; and a second touch electrode array (220, 920) comprising N second touch electrodes including 1st to Nth second touch electrodes (221, 521, 522, 523) arranged along a second direction (D2), wherein each of the first touch electrodes has a first connecting portion (212A, 312A, 712A, 911A) extending along the second direction (D2), and each of the 2nd to Mth first touch electrodes further comprises a plurality of first electrode blocks (212B, 312B, 712B); the first electrode blocks of each of the 2nd to Mth first touch electrodes are arranged on the same side of the first connecting portion of each of the 2nd to Mth first touch electrodes; and an orthographic projection of each of the first electrode blocks onto the second touch electrode arrangement at least partially covers at least two second touch electrodes, wherein each of the 1st to (M-1)th first touch electrodes (311, 312) further comprises a plurality of second electrode blocks (312C, 712C); and in the 2nd to (M-1)th first touch electrodes (312), the second electrode blocks (312C) and the first electrode blocks (312B) of one and the same first touch electrode are arranged on opposite sides of the first connecting portion (312A) of one and the same first touch electrode.

Description

TECHNICAL FIELD

[0001] The present application relates generally to the field of display technology, and more particularly to a touch display panel and a touch display device. BACKGROUND

[0002] Touch display devices can use touch electrodes to detect the coordinates of a finger in the plane of the touch display device's screen and display the display according to the coordinates.

[0003] DE 10 2015 110 111 A1 discloses a touch display panel and a method for operating the same, as well as a touch device. CN 1 05 572 935 A discloses an electronic test pen. DE 10 2013 112 486 A1 discloses a display device with an integrated touch-sensitive screen. US 2014 / 0 240 616 A1 discloses a touch panel and a manufacturing method for a touch panel.

[0004] In prior art touch display devices, the touch function is primarily performed by two touch electrode layers, each touch electrode layer having a plurality of touch electrodes arranged in parallel, and the two touch electrode layers being perpendicular to each other. Touch excitation signals are applied to the touch electrodes in a touch electrode layer. When a person touches the screen of the touch display device with their finger, a coupling capacitor is formed between the finger and some touch electrodes on the screen, from which a leakage current flows. Based on the detection of the leakage current, a touch detection circuit determines two orthogonal touch electrodes in the two touch electrode layers, which form a coupling capacitor with the finger, thus determining the touch position.

[0005] Fig. 1 shows a schematic diagram of a conventional touch display device.

[0006] A touch transmitting electrode layer 110 includes a plurality of strip-shaped touch transmitting electrodes 111. A touch sensor electrode layer 120 includes a plurality of bar-shaped touch sensor electrodes 121. The extension direction of the touch transmitting electrode 111 is orthogonal to the extension direction of the touch sensor electrode 121, with each touch transmitting electrode 111 partially overlapping each touch sensor electrode 121. That is, each of the touch transmitting electrodes 111 forms a capacitor with each of the touch sensor electrodes 121 at the overlap. The touch position is detected based on the capacitance change.

[0007] Furthermore, the touch display device includes an integrated circuit (IC) 130. Each touch transmitting electrode 111 is electrically connected to the IC 130 by a touch sensing signal line 112 and receives a touch sensing signal transmitted from the IC 130. Each touch sensor electrode 121 is electrically connected to the IC 130 by a touch sensing signal line 122, to which it transmits a detected touch sensor signal.

[0008] However, if the Fig. When the architecture shown in Figure 1 is used and the touch display device has a large screen, a large number of touch transmitting electrodes and touch sensing electrodes must be provided to ensure a certain touch detection precision. Consequently, the number of touch sensing signal lines connected between the touch transmitting electrodes and the integrated circuit increases accordingly, and the number of touch sensing signal lines connected between the touch sensing electrodes and the integrated circuit also increases accordingly. Consequently, the touch sensing signal lines and / or the touch sensing signal lines require more space, resulting in an increase in the frame width of the touch display device, which contradicts the current development trend toward display devices with a narrow frame width. OVERVIEW

[0009] In view of the above-described deficiencies of the related art, it is desirable to provide a touch display panel and a touch display device that solve the technical problem in the related art.

[0010] According to a first aspect, an embodiment of the present application provides a touch display panel comprising: a first touch electrode array including M first touch electrodes, including 1st to Mth first touch electrodes, arranged along a first direction; and a second touch electrode array including N second touch electrodes, including 1st to Nth second touch electrodes, arranged along a second direction, wherein each of the first touch electrodes has a first connection portion extending along the second direction, and each of the 2nd to Mth first touch electrodes further comprises a plurality of first electrode blocks; the first electrode blocks in each of the 2nd to Mth first touch electrodes are arranged on the same side of the first connection portion of each of the 2nd to Mth first touch electrodes;and an orthographic projection of each of the first electrode blocks onto the second touch electrode array at least partially covers at least two second touch electrodes;

[0011] According to a second aspect, an embodiment of the present application further provides a touch display device comprising the touch display panel described above.

[0012] According to the solution of the embodiments of the present application, since the orthographic projection of each first electrode block of the first touch electrode onto the second touch electrode array at least partially overlaps at least two second touch electrodes, the touch detection precision of the touch display panel can be increased. Furthermore, the number of first touch electrodes and / or second touch electrodes can be reduced while ensuring a certain touch detection precision of the touch display panel, and the number of signal lines connected to the first touch electrodes and / or the second touch electrodes can be reduced accordingly. In this way, the number of wirings in the touch display panel is reduced, which corresponds to the development trend toward display devices with a narrow frame width. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Further features, objects and advantages of the present application will become apparent from the detailed description of the non-limiting embodiments with reference to the drawings, in which: Fig. 1 is a structural principle diagram of a conventional touch display device; Fig. 2 a structural principle diagram of a relative positional relationship between a first touch electrode arrangement and a second Touch electrode arrangement in a touch display panel according to an embodiment of the present application; Fig. 3 is a structural schematic diagram of a relative positional relationship between a first touch electrode array and a second touch electrode array in a touch display panel according to another embodiment of the present application; Fig. 4 is a structural schematic diagram of the first touch electrode arrangement of the Fig. 3 illustrated design; Fig. 5 is a structural schematic diagram of a relative positional relationship between a first touch electrode arrangement and a second Touch electrode arrangement in a touch display panel according to yet another embodiment of the present application; Fig. 6 is a structural schematic diagram of the second touch electrode arrangement of the Fig. 5 illustrated design; Fig. 7 a structural principle diagram of a first contact electrode of the Fig. 5 illustrated design; the Fig. 8A to Fig. 8D Principle diagrams of the reported point positions when using the touch display panel of the Fig. 5 and the reported point positions in the case of using a touch display panel of the related art when the touch trajectory corresponds to a straight line and a circle; Fig. 9 is a structural schematic diagram of a relative positional relationship between a first touch electrode array and a second touch electrode array in a touch display panel according to still another embodiment of the present application; Fig. 10 is a structural schematic diagram of a touch display panel according to an embodiment of the present application; and Fig. 11 is a schematic diagram of a display device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE DESIGNS

[0014] The present application is described in detail below with reference to the accompanying drawings and the embodiments. The specific embodiments serve merely to illustrate the disclosure without limiting it. It is also noted that, for the convenience of description, only those components related to the respective disclosure are shown in the accompanying drawings.

[0015] Unless they conflict with each other, the embodiments of the present application and the features of the embodiments may be combined. The present application is described in detail below with reference to the accompanying drawings and the embodiments.

[0016] Fig. 2 is a structural schematic diagram of a relative positional relationship between a touch transmitting electrode array and a touch sensing electrode array in an integrated touch display panel according to an embodiment of the present application.

[0017] The touch display panel of the present application includes a first touch electrode assembly 210 and a second touch electrode assembly 220.

[0018] The first touch electrode array 210 includes M first touch electrodes, 1st to Mth first touch electrodes, arranged along a first direction D1. M is an integer (whole number) greater than 2. In the Fig. 2, the 1st first touch electrode arranged along the first direction D1 is designated by reference number 211, and the 2nd to Mth first touch electrodes are designated by reference number 212.

[0019] The second touch electrode array 220 includes N second touch electrodes 221, 1st to Nth second touch electrodes arranged along the second direction D2.

[0020] Each of the first touch electrodes 211 and 212 has a first connecting portion 212A extending along the second direction D2, and each of the 2nd to Mth first touch electrodes 212 further includes a plurality of first electrode blocks 212B. The first electrode blocks 212B and the first connecting portion 212A of the same first touch electrode 212 can be electrically connected to each other in any manner, including direct contact, a conductor arranged in the same layer as the first connecting portion 212A and the first electrode blocks 212B, and / or a conductor (e.g., a metal wire) arranged in a different layer than the first connecting portion 212A and the first electrode blocks 212B.

[0021] The first electrode blocks 212B of each of the 2nd to Mth first touch electrodes 212 are arranged on the same side of the first touch electrode first connection portion 212A.

[0022] In this embodiment, an orthographic projection of each of the first electrode blocks 212B onto the second touch electrode array 220 also at least partially covers at least two second touch electrodes 221.

[0023] In the touch display panel of this embodiment, each of the second to m-th first touch electrodes of the first touch electrode array includes a plurality of first electrode blocks. Therefore, when a finger touches a position corresponding to the first electrode block, the touch of the finger can be detected by means of a coupling capacitance formed between the first electrode block and the second touch electrode, thereby improving the precision of touch detection.

[0024] Since the orthographic projection of the first electrode block 212B onto the second touch electrode arrangement 220 - as in Fig. 2 - at least partially covers at least two second touch electrodes 221, when a finger touches a position corresponding to the first electrode block, it can be determined that the touch position is at the overlap between the first electrode block and the at least two second touch electrodes that at least partially cover the first electrode block, based on a change in the coupling capacitance between the first electrode block and the at least two second touch electrodes that at least partially cover the first electrode block, thereby further increasing the precision of the touch detection.

[0025] Fig. 3 is a schematic diagram of the relative positional relationship between a touch transmitting electrode array and a touch sensing electrode array in a touch display panel according to another embodiment of the present application. Fig. 4 is a schematic diagram of the first touch electrode arrangement of the Fig. 3 illustrated design.

[0026] This design is described below with reference to the Fig. 3 and Fig. 4. The description focuses on the differences between this design and the one in Fig. 2, whereby identical parts are not described in detail again at this point.

[0027] In Fig. 3, reference numeral 311 denotes the 1st first touch electrode in the first touch electrode array, reference numeral 312 denotes the 2nd to (M-1)th first touch electrodes in the first touch electrode array, and reference numeral 313 denotes the Mth first touch electrode in the first touch electrode array.

[0028] In this embodiment, each of the 1st to (M-1)th first touch electrodes further comprises a plurality of second electrode blocks. As shown in Fig. 4, in the 2nd to (M-1)th first touch electrodes, the second electrode blocks 312C and the first electrode block 312B of the same first touch electrode are respectively arranged on opposite sides of the first connecting portion 312A of the first touch electrode.

[0029] In the touch display panel of this embodiment, since each of the 2nd to Mth first touch electrodes of the first touch electrode array includes a plurality of first electrode blocks and each of the 1st to (M-1)th first touch electrodes includes a plurality of second electrode blocks, when a finger touches a position corresponding to the first electrode block or the second electrode block, the touch of the finger can be detected by means of a coupling capacitance formed between the first electrode block or the second electrode block and the second touch electrode, thereby improving the precision of touch detection.

[0030] In addition, since the orthographic projections of the first electrode block 312B and the second electrode block 312C onto the second touch electrode array 320 at least partially overlap at least two second touch electrodes 321, when a finger touches a position corresponding to the first electrode block 312B or the second electrode block 312C, it can be determined that the touch position is located at the overlap between the first electrode block or the second electrode block and at which second touch electrode, based on a change in the coupling capacitance between the first electrode block or the second electrode block and at least two second touch electrodes that at least partially overlap the first electrode block or the second electrode block, thereby further increasing the precision of touch detection.

[0031] As in Fig. 4, in some optional embodiments, in the first touch electrode array, a second electrode block of the (i+1)-th first touch electrode is formed between each two adjacent first electrode blocks of the i-th first touch electrode, where i is an integer and 1≤i≤M-1. Similarly, a first electrode block of the (j-1)-th first touch electrode is formed between each two adjacent second electrode blocks of the j-th first touch electrode, where j is an integer and 2≤j≤M. In this way, two adjacent first touch electrodes can be embedded in one another, so that the first touch electrode array covers a larger area on the touch display panel, thereby further increasing the precision of touch detection.

[0032] In this embodiment, the first electrode block and the second electrode block are congruent. In some optional embodiments, the first electrode block and the second electrode block may have a first shape. The first shape may be, for example, rectangular, arcuate, triangular, or trapezoidal. The first electrode block 312B may have a first edge extending along the second direction D2 and connected to the first connecting portion 312A, the second electrode block 312C may have a second edge extending along the second direction D2 and connected to the first connecting portion 312A, wherein the length of the first edge corresponds to the length of the second edge.Consequently, the first electrode block 312B and the second electrode block 312C are congruent and connected to the first connecting portion 312A in the same manner, so that the structure to be etched in the patterning process for manufacturing the first touch electrode is simple, which reduces the complexity of the patterning process and increases the production yield of the first touch electrode.

[0033] Furthermore, in some optional embodiments, both the first electrode blocks of the same first touch electrode and the second electrode blocks of the same first touch electrode are evenly distributed. That is, in these optional embodiments, two adjacent first electrode blocks of the same first touch electrode have the same spacing, and two adjacent second electrode blocks of the same first touch electrode have the same spacing.In some embodiments, the distance between each two adjacent first electrode blocks of the same first touch electrode may be greater than the width of the second electrode block in the second direction D2, and the distance between each two adjacent second electrode blocks of the same first touch electrode may be greater than the width of the first electrode block in the second direction D2, so that adjacent first touch electrodes may be embedded in each other, thereby further increasing the precision of the touch detection of the touch display panel.

[0034] Fig. 5 is a schematic diagram of the relative positional relationship between a first touch electrode array and a second touch electrode array in a touch display panel according to another embodiment of the present application. Fig. 6 is a schematic diagram of the second touch electrode arrangement of the Fig. 5 illustrated design.

[0035] This design is described below with reference to the Fig. 5 and Fig. 6. The description focuses on the differences between this design and the one in the Fig. 3 and Fig. 4, whereby identical parts are not described in detail again here.

[0036] In this embodiment, each first touch electrode 511 of the first touch electrode arrangement 510 has a similar structure as in the Fig. 3, so that the details will not be described again here.

[0037] In contrast to the Fig. 3, in this embodiment, as in the Fig. 5 and Fig. 6, each of the second touch electrodes (the 1st second touch electrode is designated by reference number 521, the 2nd to (N-1)th second touch electrodes are designated by reference number 522, and the Nth second touch electrode is designated by reference number 523 ( Fig. 5)) further comprises a second connecting portion 521A, and each of the 2nd to Nth second touch electrodes further comprises third electrode blocks 521B. The third electrode blocks 521B of each of the 2nd to Nth second touch electrodes are formed on the same side of the second connecting portion 521A of the second touch electrode, and the orthographic projection of a third electrode block 521B onto the first touch electrode array 510 at least partially covers at least two first touch electrodes 511.Since the orthographic projection of the third electrode block 521B onto the first touch electrode array 510 at least partially overlaps at least two first touch electrodes 511, when a finger touches a position corresponding to the third electrode block 521B, it can be determined, based on a change in the coupling capacitance between the third electrode block 521B and the at least two first touch electrodes that at least partially overlap the third electrode block 521B, that the touch position is located at the overlap between the third electrode block 521B and at which first touch electrode, thereby further increasing the precision of touch detection.

[0038] In this embodiment, each of the 1st to (N-1)th second touch electrodes further includes a plurality of fourth electrode blocks 521C. In the 2nd to (N-1)th second touch electrodes, the third electrode block and the fourth electrode blocks of the same second touch electrode are respectively arranged on opposite sides of the second connecting portion of the second touch electrode.

[0039] Since the orthographic projections of the third electrode block 521B and the fourth electrode block 521C onto the first touch electrode array 510 at least partially overlap at least two first touch electrodes 511, when a finger touches a position corresponding to the third electrode block 521B or the fourth electrode block 521C, it can be determined that the touch position is located at the overlap between the third electrode block 521B or the fourth electrode block 521C and at which first touch electrode, based on a change in the coupling capacitance between the third electrode block 521B or the fourth electrode block 521C and the at least two first touch electrodes 511 that at least partially overlap the third electrode block 521B or the fourth electrode block 521C, thereby further increasing the precision of touch detection.

[0040] As in Fig. 6, in some optional embodiments, a fourth electrode block of the (k-1)th second touch electrode is formed in the second touch electrode array between every two adjacent third electrode blocks of the kth second touch electrode, where k is an integer and 2≤k≤N. Similarly, a third electrode block of the (p+1)th second touch electrode is formed between every two adjacent fourth electrode blocks of the pth second touch electrode, where p is an integer and 1≤p≤N-1. In this way, two adjacent second touch electrodes can be embedded in each other, so that the second touch electrode array covers a larger area on the touch display panel, thereby further increasing the precision of touch detection.

[0041] In this embodiment, the third electrode block and the fourth electrode block are congruent. In some optional embodiments, the third electrode block and the fourth electrode block may have a first shape. The first shape may be, for example, rectangular, arcuate, triangular, or trapezoidal. The third electrode block 521B may have a first edge extending along the second direction D2 and connected to the first connecting portion 312A, the fourth electrode block 521C may have a second edge extending along the second direction D2 and connected to the first connecting portion 312A, wherein the length of the first edge corresponds to the length of the second edge.Consequently, the third electrode block 521B and the fourth electrode block 521C are congruent and connected to the first connecting portion 312A in the same manner, so that the structure to be etched in the patterning process for manufacturing the first touch electrode is simple, which reduces the complexity of the patterning process and increases the production yield of the first touch electrode.

[0042] In the embodiments described above, the first connecting portion, the first electrode block, and the second electrode block of the first touch electrode may be made of a transparent conductive glass, e.g., ITO (indium tin oxide), and the second connecting portion, the third electrode block, and the fourth electrode block of the second touch electrode may also be made of ITO. To reduce the resistance of the first touch electrode and / or the second touch electrode, metal wires may be arranged in a metal layer parallel to the first touch electrodes and / or the second touch electrodes.

[0043] Alternatively, in order to reduce the resistance of the first touch electrode and / or the second touch electrode, the sizes of the first connecting portion, the first electrode block and the second electrode block of the first touch electrode and / or the sizes of the second connecting portion, the third electrode block and the fourth electrode block of the second touch electrode may be selected accordingly.

[0044] As in Fig. 7, the first electrode block 712B and the second electrode block 712C may, for example, have a width d along the first direction D1, the sum of the width of the first connecting portion 712A along the first direction D1 and d is L, and the length of the first edge is S, where S=L and d=(2 / 3)L.

[0045] Similarly, in the second touch electrode, the width d1 of the third electrode block and the fourth electrode block along the second direction, the sum L1 of the width of the second connection portion along the second direction and d1, and the length S1 of the first edge may satisfy the following condition: S1=L1, and d1=(2 / 3)L1.

[0046] In this way, adjacent first touch electrodes and adjacent second touch electrodes can be embedded in each other, thereby further increasing the precision of touch detection. Moreover, the influence on the response speed due to the excessively large resistance of the first touch electrode and / or the second touch electrode—when the width of the connection portion (e.g., the width d of the first connection portion along the first direction and the width d1 of the second connection portion along the second direction) is too small and the width of the electrode block (e.g., the width of the first and second electrode blocks along the first direction and the width of the third and fourth electrode blocks along the second direction) is too large—can be prevented.

[0047] In the following, with reference to the Fig. 8A to Fig. 8D schematically shows a comparison between the precision of touch detection of the touch display panel of this embodiment and that of the Fig. 1 shown touch display panel.

[0048] In the Fig. 8A and Fig. 8B is a comparison between the number of reporting points in case of using the Fig. 1 illustrated touch display panel and the use of the Fig. 5 when the movement trajectory of a finger or a passive stylus on the touch display panel corresponds to a straight line segment.

[0049] If the Fig. 8A, the first touch electrode arrangement 81 and the second touch electrode arrangement 82 are used for touch detection and a movement trajectory of a finger or a passive input pen on the touch display panel corresponds to the Fig. 8A, 8 reported point positions are generated, ie the points shown in Fig. 8A hatched positions.

[0050] If the Fig. 8B, the first touch electrode array 810 and the second touch electrode array 820 are used for touch detection, and a movement trajectory of a finger or a passive stylus on the touch display panel is the same straight line segment as that shown in Fig. 8A, 13 reported point positions are generated, ie the Fig. 8B hatched positions.

[0051] As can be seen from the comparison between the number of reported point positions in Fig. 8A and the number of reported point positions in Fig. 8B, in the case of using the architecture of this embodiment corresponding to the first touch electrode arrangement and the second touch electrode arrangement, when the movement trajectory of a finger or a passive stylus on the touch display panel corresponds to the Fig. 8A and Fig. 8B, the number of reported point positions is reduced by (13-8) / 8×100%=67.5%.

[0052] Who in Fig. 8C, the first touch electrode arrangement 81 and the second touch electrode arrangement 82 are used for touch detection and the movement trajectory of a finger or a passive input pen on the touch display panel corresponds to the Fig. 8C, 10 reported point positions are generated, ie the ones shown in Fig. 8C hatched positions.

[0053] If the Fig. 8D, the first touch electrode arrangement 810 and the second touch electrode arrangement 820 are used for touch detection and a movement trajectory of a finger or a passive input pen on the touch display panel corresponds to the same circle as that in Fig. 8C, 18 reported point positions are generated, which are Fig. 8D hatched positions.

[0054] As can be seen from the comparison between the number of reported point positions in Fig. 8C and the number of reported point positions in Fig. 8D, in the case of using the architecture of this embodiment corresponding to the first touch electrode arrangement and the second touch electrode arrangement, when the movement trajectory of a finger or a passive input pen on the touch display panel corresponds to the Fig. 8C and Fig. 8D, the number of reported point positions by (18-10) / 10×100%=80%.

[0055] Those skilled in the art will recognize that when the touch trajectory on the touch display panel changes, depending on whether the Fig. 1 or the touch display panel according to this embodiment is used, the number of reported point positions also changes accordingly. However, those skilled in the art will also appreciate that by using the architecture of this embodiment, which corresponds to the first touch electrode array and the second touch electrode array, the number of reported point positions can be significantly increased regardless of the specific touch trajectory pattern, which in turn significantly increases the precision of touch detection.

[0056] To reduce the resistance of the first touch electrode and / or the second touch electrode of the embodiments of the present application, in some optional embodiments, at least the first electrode block, the second electrode block, the third electrode block, or the fourth electrode block may be a metal mesh electrode. Compared with using ITO as the first electrode block, the second electrode block, the third electrode block, and the fourth electrode block, a lower resistance can be achieved by using a metal mesh electrode as the first electrode block, the second electrode block, the third electrode block, and the fourth electrode block, so that the first touch electrode and / or the second touch electrode have a faster response speed and lower signal transmission loss.

[0057] To further reduce the resistance of the first touch electrode and / or the second touch electrode, in some other optional embodiments, the first connecting portion of the first touch electrode and / or the second connecting portion of the second touch electrode may be made of metal mesh wires. In these optional embodiments, the first connecting portion, the first electrode block, and the second electrode block are arranged in the same layer and are each metal mesh electrodes; and / or the second connecting portion, the third electrode block, and the fourth electrode block are arranged in the same layer and are each metal mesh electrodes.

[0058] Fig. 9 is a schematic diagram of the relative positional relationship between a first touch electrode array and a second touch electrode array in a touch display panel according to another embodiment of the present application.

[0059] In contrast to the Fig. 5, in this embodiment, a first connecting portion 911A of each first touch electrode in a first touch electrode assembly 910 and / or each second connecting portion 921A of a second touch electrode assembly 920 are metal wires.

[0060] Since the first connection portion 911A and / or the second connection portion 921A is a metal wire, the resistance of the first touch electrode and / or the second touch electrode can be reduced, so that the signal transmission rate of the first touch electrode and / or the second touch electrode is improved, which in turn improves the detection sensitivity of the touch display panel of this embodiment.

[0061] Moreover, in some optional embodiments, at least one of the first electrode block, the second electrode block, the third electrode block, or the fourth electrode block may be a metal mesh electrode so that the resistance of the first touch electrode and / or the second touch electrode is further reduced.

[0062] As in Fig. As shown in Figure 9, the first electrode block and the second electrode block in this embodiment have a width d' along the first direction, wherein the length of the first edge is S' and d'=S'.

[0063] Similarly, the width d" of the third electrode block and the fourth electrode block along the second direction and the length S' of the first edge may be d''=S'.

[0064] Furthermore, the touch display panel of this embodiment of the present application includes a plurality of first touch signal lines, a plurality of second touch signal lines, and an integrated circuit. A first end of each of the first touch signal lines is connected to one of the first touch electrodes of the first touch electrode array, and a second end of each of the first touch signal lines is electrically connected to the integrated circuit. A first end of each of the second touch signal lines is connected to one of the second touch electrodes of the second touch electrode array, and a second end of each of the second touch signal lines is electrically connected to the integrated circuit.

[0065] In some optional embodiments, each first touch electrode is connected to the first ends of two first touch signal lines, and the first ends of two first touch signal lines connected to the same first touch electrode are each electrically connected to two opposite ends of the first touch electrode in the second direction. Consequently, an electrical signal is sent to the first touch electrode via two first touch signal lines, or an electrical signal detected by the first touch electrode is received via two first touch signal lines, thereby improving the response speed of the first touch electrode, which in turn improves the detection sensitivity of the touch display panel.

[0066] In the touch display panel of the embodiments of the present application, the first touch electrodes may be drive electrodes and the second touch electrodes may be sensor electrodes; or the first touch electrodes may be sensor electrodes and the second touch electrodes may be drive electrodes. The touch drive electrodes and the touch sensor electrodes are arranged crosswise and form a plurality of capacitors for detecting touch positions. The touch position of a finger can be determined by applying touch sensing signals to the touch drive electrodes and detecting the charge changes of the touch sensor electrodes.

[0067] Fig. 10 is a schematic diagram of a touch display panel according to an embodiment of the present application.

[0068] In Fig. 10, the touch display panel includes a matrix substrate 1010 and a color film substrate 1020 disposed opposite the matrix substrate 1010. A touch drive electrode array including a plurality of touch drive electrodes 1011 may be formed on the matrix substrate 1010, and a touch sensor electrode array including a plurality of touch sensor electrodes 1021 may be formed on the color film substrate 1020.

[0069] In some optional embodiments, the touch sensor electrode array may be disposed on one side of the color film substrate 1020 spaced apart from the matrix substrate 1010 (as shown in Fig. 10, the touch sensor electrode array is disposed on a top surface of the ink film substrate 1020, and the touch drive electrode array may be disposed on a side of the matrix substrate 1010 facing the ink film substrate 1020.

[0070] Furthermore, the matrix substrate of the touch display panel of the present application includes a plurality of scanning lines S1 to Sm and data lines T1 to Tn that intersect with the scanning lines S1 to Sm. The scanning lines S1 to Sm and the data lines T1 to Tn intersect to form a pixel matrix.

[0071] The scanning lines S1 to Sm may extend along the first direction D1, and the data lines T1 to Tn may extend along the second direction D2. That is, in the touch display panel of this embodiment, the extending direction of the touch drive electrodes 1011 may be the same as that of the data lines T1 to Tn, and the extending direction of the touch sensor electrodes 1021 may be different from that of the scanning lines S1 to Sm.

[0072] The touch display panel of the present application further includes an integrated circuit 1012, a plurality of touch sensing signal lines 1013, and a plurality of touch sensor signal lines 1022.

[0073] One end of each touch sensing signal line 1013 is connected to a touch drive electrode 1011, and the other end of the touch sensing signal line 1013 is connected to the integrated circuit 1012. Similarly, one end of each touch sensor signal line 1022 is connected to a touch sensor electrode 1021, and the other end of each touch sensor signal line 1022 is connected to the integrated circuit 1012. Since the touch sensor signal lines 1022 are disposed on the color film substrate 1020 and the integrated circuit 1012 is disposed on the matrix substrate 1010, the touch sensor signal lines 1022 can be electrically connected to the integrated circuit 1012, for example, by means of a flexible printed circuit board (FPC) 1023 connected between the touch sensor signal lines 1022 and the integrated circuit 1012.

[0074] The integrated circuit 1012 may be configured to send a touch sensing signal to each touch driver electrode 1013 and receive a touch sensor signal from each touch sensor electrode 1021 during a touch phase. For example, during the touch phase, the integrated circuit 1012 sequentially sends a touch sensing signal to each touch driver electrode 1013 and receives touch sensor signals from all touch sensor electrodes 1021. The touch position may be determined based on the different touch sensor signals that the touch sensor electrodes 1021 send to the integrated circuit 1012.

[0075] In some optional embodiments, the touch-sensor signal line 1022 of the touch display panel of the present application may be disposed in the same conductive layer as the touch-sensor electrode 1021. In some other optional embodiments, the touch-sensor signal line may alternatively be disposed in different conductive layers than the touch-sensor electrode. In this case, the touch-sensor signal lines may be electrically connected to the touch-sensor electrodes through direct contact or by means of through-holes provided in an insulating layer between the conductive layer in which the touch-sensor signal line is disposed and the conductive layer in which the touch-sensor electrode is disposed.

[0076] In other optional embodiments, in the touch display panel according to the present application, each touch drive electrode 1013 can be reused as a common electrode in a display phase. In these optional embodiments, the integrated circuit 1012 can also be used to send a common voltage signal to each touch drive electrode 1013 during the display phase, so that the liquid crystal molecules (not shown in the figures) formed in a liquid crystal layer between the matrix substrate 1010 and the color film substrate 1020 can be deflected under the action of an electric field generated by the common electrode and the pixel electrodes, allowing the predetermined images to be displayed.

[0077] The present application also discloses a touch display device (as in Fig. 11). The touch display device 1100 may include the touch display panel described above. Those skilled in the art will recognize that the touch display device may include other known structures in addition to the touch display panel described above. These known structures are not described in detail so as not to obscure the focus of the present application.

[0078] The touch display device according to the present application may be any device that includes the touch display panel described above, such as a Fig. 11, a tablet computer, the display of a computer, a portable smart device, a display device for a transportation vehicle such as a car, etc. Any touch display device incorporating the structure of the touch display panel disclosed in this application is intended to be within the scope of the present application.

[0079] Those skilled in the art will appreciate that the scope of the disclosure is not limited to the technical solutions of specific combinations of the technical features described above, but also includes other technical solutions in any combination of the technical features described above or equivalent features without going beyond the concept of the invention, i.e., technical solutions resulting from replacing the technical features described above with technical features having similar functions (without limitation) to those disclosed in the present application.

Claims

[1] A touch display panel comprising: a first touch electrode array (210, 510, 910) comprising M first touch electrodes, including 1st to Mth first touch electrodes (211, 311, 312, 313, 511) arranged along a first direction (D1), where M is an integer greater than 2; and a second touch electrode array (220, 920) comprising N second touch electrodes including 1st to Nth second touch electrodes (221, 521, 522, 523) arranged along a second direction (D2), wherein each of the first touch electrodes has a first connecting portion (212A, 312A, 712A, 911A) extending along the second direction (D2), and each of the 2nd to Mth first touch electrodes further comprises a plurality of first electrode blocks (212B, 312B, 712B); the first electrode blocks of each of the 2nd to Mth first touch electrodes are arranged on the same side of the first connecting portion of each of the 2nd to Mth first touch electrodes; and an orthographic projection of each of the first electrode blocks onto the second touch electrode arrangement at least partially covers at least two second touch electrodes, wherein each of the 1st to (M-1)th first touch electrodes (311, 312) further comprises a plurality of second electrode blocks (312C, 712C); and in the 2nd to (M-1)th first touch electrodes (312), the second electrode blocks (312C) and the first electrode blocks (312B) of one and the same first touch electrode are arranged on opposite sides of the first connecting portion (312A) of one and the same first touch electrode. [2] A touch display panel according to claim 1, wherein the first electrode block (312B) and the second electrode block (312C) are congruent and have a first shape; and the first shape can be rectangular, arched, triangular or trapezoidal. [3] Touch display panel according to claim 2, wherein the first electrode block (312B) has a first edge extending along the second direction (D2) and is connected to the first connecting portion (312A); the second electrode block (312C) has a second edge extending along the second direction (D2) and is connected to the first connecting portion (312A); and a length of the first edge corresponds to a length of the second edge. [4] A touch display panel according to claim 1, wherein in the first touch electrode arrangement, a second electrode block of the (i+1)-th first touch electrode is formed between each two adjacent first electrode blocks of the i-th first touch electrode, where i is an integer and 1≤i≤M-1; and between each two adjacent second electrode blocks of the j-th first touch electrode, a first electrode block of the (j-1)-th first touch electrode is arranged, where j is an integer and 2≤j≤M. [5] Touch display panel according to claim 1, wherein each of the second touch electrodes (521, 522, 523) has a second connecting portion (521A, 521A), and each of the 2nd to Nth second touch electrodes (522, 523) further comprises a third electrode block (521B); the third electrode block (521B) of each of the 2nd to Nth second touch electrodes (522, 523) is arranged on the same side of the second connecting portion of each of the 2nd to Nth second touch electrodes; and an orthographic projection of the third electrode block (521B) onto the first touch electrode arrangement at least partially covers at least two first touch electrodes (511). [6] Touch display panel according to claim 5, wherein each of the 1st to (N-1)th second touch electrodes (521, 522) further comprises a plurality of fourth electrode blocks (521C); and in the 2nd to (N-1)th second touch electrodes (522), the third electrode block (521B) and the fourth electrode block (521C) of the same second touch electrode are arranged on opposite sides of the second connecting portion (521A) of the same second touch electrode. [7] Touch display panel according to claim 6, wherein the third electrode block (521B) and the fourth electrode block (521C) are congruent and have a first shape. [8] Touch display panel according to claim 7, wherein the third electrode block (521B) has a third edge extending along the first direction (D1) and is connected to the second connecting portion (521A); the fourth electrode block (521C) has a fourth edge extending along the first direction (D1) and is connected to the second connecting portion (521A); and a length of the third edge corresponds to a length of the fourth edge. [9] Touch display panel according to claim 6, wherein a fourth electrode block of the (k-1)-th second touch electrode is arranged between each two adjacent third electrode blocks of the k-th second touch electrode, where k is an integer and 2≤k≤N; and between each two adjacent fourth electrode blocks of the p-th second touch electrode, a third electrode block of the (p+1)-th second touch electrode is arranged, where p is an integer and 1≤p≤N-1. [10] Touch display panel according to claim 8, wherein at least one of the first electrode blocks, the second electrode blocks, the third electrode blocks or the fourth electrode blocks is a metal mesh electrode. [11] Touch display panel according to claim 10, wherein the first connecting portion is a metal mesh electrode and is arranged in the same layer as the first electrode block and the second electrode block; and / or the second connecting portion is a metal mesh electrode and is arranged in the same layer as the third electrode block and the fourth electrode block. [12] Touch display panel according to claim 11, wherein the first electrode block (712B) and the second electrode block (712C) have a width d along the first direction (D1), a sum of a width of the first connecting portion (712A) along the first direction (D1) and d is L, and a length of the first edge is S, wherein S=L and d=(2 / 3)L. [13] The touch display panel according to claim 10, wherein the first connecting portion and the second connecting portion are metal wires. [14] Touch display panel according to claim 13, wherein the first electrode block and the second electrode block have a width d' along the first direction, a length of the first edge is S' and d'=S'. [15] The touch display panel according to any one of claims 1-14, wherein the first touch electrode is a touch sensor electrode and the second touch electrode is a touch transmitting electrode. [16] The touch display panel of claim 15, further comprising a plurality of first touch signal lines, a plurality of second touch signal lines, and an integrated circuit (1012), wherein a first end of each of the first touch signal lines is connected to one of the first touch electrodes in the first touch electrode arrangement, respectively, and a second end of each of the first touch signal lines is electrically connected to the integrated circuit (1012); and a first end of each of the second touch signal lines is connected to one of the second touch electrodes in the second touch electrode array, respectively, and a second end of each of the second touch signal lines is electrically connected to the integrated circuit. [17] Touch display panel according to claim 16, wherein each of the first touch electrodes is connected to the first ends of two first touch signal lines, respectively; and the first ends of two first touch signal lines connected to the same first touch electrode are each electrically connected to two opposite ends of the first touch electrode in the second direction (D2). [18] A touch display device (1100) comprising a touch display panel according to any one of claims 1-17.

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