Touch-control display panel and touch-control display device

Abstract

Provided in the present application are a touch-control display panel and a touch-control display device. The touch-control display panel comprises: a panel body, a first touch-control electrode layer, an insulating layer, and a second touch-control electrode layer, wherein a first inductive electrode, a driving electrode and a second inductive electrode are arranged at intervals from the same reference point in directions away from the reference point, and an orthographic projection of the driving electrode on the insulating layer is located between an orthographic projection of the first inductive electrode on the insulating layer and an orthographic projection of the second inductive electrode on the insulating layer.

Description

Touch display panel and touch display device Technical Field

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

[0002] A mutual capacitance capacitive touch screen includes touch sub-drive electrodes and touch sub-sensing electrodes. The touch sub-sensing electrodes and touch sub-drive electrodes are coupled to form mutual capacitance. When a finger touches the touch screen, a coupling capacitance is formed between the finger and the touch drive electrode, causing the output signal of the touch sensing electrode to change. The touch screen determines the location of the touch point based on the signal output by the touch sensing electrode.

[0003] The existing touch screen can only detect a touch signal once in one scanning cycle, and the touch reporting rate is low. SUMMARY OF THE INVENTION

[0004] The touch display panel and touch display device provided in this application are intended to solve the technical problem of low touch reporting rate.

[0005] In one aspect, embodiments of the present application provide a touch display panel, comprising: a panel body, a first touch electrode layer, an insulating layer, and a second touch electrode layer, wherein the first touch electrode layer is disposed on the panel body and includes first sensing electrodes; the insulating layer is disposed on the first touch electrode layer; and the second touch electrode layer is disposed on the insulating layer and includes drive electrodes and second sensing electrodes. The first sensing electrodes, the drive electrodes, and the second sensing electrodes are spaced apart from each other in a direction away from the same reference point, and the orthographic projection of the drive electrodes on the insulating layer is located between the orthographic projection of the first sensing electrodes and the orthographic projection of the second sensing electrodes on the insulating layer.

[0006] On the other hand, the present application further provides a touch display device, including a touch display panel and a driver chip, the touch display panel being electrically connected to the driver chip, the touch display panel comprising: a panel body, a first touch electrode layer, an insulating layer, and a second touch electrode layer, wherein the first touch electrode layer is disposed on the panel body, the first touch electrode layer comprising first sensing electrodes; the insulating layer is disposed on the first touch electrode layer; the second touch electrode layer is disposed on the insulating layer, the second touch electrode layer comprising drive electrodes and second sensing electrodes; wherein the first sensing electrodes, the drive electrodes, and the second sensing electrodes are spaced apart from each other in a direction away from the same reference point, and the orthographic projection of the drive electrodes on the insulating layer is located between the orthographic projection of the first sensing electrodes and the orthographic projection of the second sensing electrodes on the insulating layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] FIG1 is a schematic diagram of a touch display panel provided in an embodiment of the present application;

[0008] FIG2 is a cross-sectional view of the touch display panel provided in FIG1 along the AA′ direction;

[0009] FIG3 is a schematic diagram of a first sensing electrode in the touch display panel provided in FIG1 ;

[0010] FIG4 is a schematic diagram of a second sensing electrode and a driving electrode in the touch display panel provided in FIG1 ;

[0011] FIG5 is a first partial schematic diagram of the touch display panel provided in FIG1 ;

[0012] FIG6 is a second partial schematic diagram of the touch display panel provided in FIG1 ;

[0013] FIG7 is a third partial schematic diagram of the touch display panel provided in FIG1 ;

[0014] FIG8 is a schematic diagram of a touch driving circuit in the touch display panel provided in FIG1 ;

[0015] FIG. 9 is a comparison diagram of touch driving timings of a conventional touch display panel and the touch display panel in FIG. 1 . Modes for Carrying Out the Invention

[0016] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The described technical solutions are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0017] An embodiment of the present application provides a touch display panel, comprising: a panel body, a first touch electrode layer, an insulating layer, and a second touch electrode layer, wherein the first touch electrode layer is disposed on the panel body and includes first sensing electrodes; the insulating layer is disposed on the first touch electrode layer; and the second touch electrode layer is disposed on the insulating layer and includes drive electrodes and second sensing electrodes. The first sensing electrodes, the drive electrodes, and the second sensing electrodes are spaced apart from each other in a direction away from the same reference point, and the orthographic projection of the drive electrodes on the insulating layer is located between the orthographic projection of the first sensing electrodes and the orthographic projection of the second sensing electrodes on the insulating layer.

[0018] The first sensing electrode includes a first sub-sensing electrode and a second sub-sensing electrode, and the first sub-sensing electrode and the second sub-sensing electrode are spaced apart from each other in a direction away from the reference point.

[0019] The first sub-sensing electrode includes a first sensing branch and a second sensing branch. Each of the first and second sensing branches includes a first connecting segment and a second connecting segment. The first connecting segment crosses and connects with ends of the second connecting segment. The first and second sensing branches are mirror-symmetrical about a center line, and both ends of the first sensing branch are respectively connected to both ends of the second sensing branch. The second sub-sensing electrode includes a third and fourth sensing branch. Each of the third and fourth sensing branches includes a third connecting segment and a fourth connecting segment. The third connecting segment crosses and connects with ends of the fourth connecting segment. The third and fourth sensing branches are mirror-symmetrical about a center line, and the third and fourth sensing branches are spaced apart along the first direction.

[0020] The cross-sectional shapes of the first sub-sensing electrodes along the second direction are all circular, and the cross-sectional shapes of the second sub-sensing electrodes along the second direction are all diamond-shaped or square.

[0021] The second sensing electrode includes a third sub-sensing electrode and at least two fourth sub-sensing electrodes, the third sub-sensing electrode being concentric with the at least two fourth sub-sensing electrodes; an orthographic projection of the first sub-sensing electrode on the insulating layer is located between an orthographic projection of the third sub-sensing electrode and an orthographic projection of the fourth sub-sensing electrode on the insulating layer, and an orthographic projection of the second sub-sensing electrode on the insulating layer is located between orthographic projections of two adjacent fourth sub-sensing electrodes on the insulating layer.

[0022] The driving electrode includes a plurality of sub-driving electrodes, and the plurality of sub-driving electrodes are concentric. An orthographic projection of the first sub-sensing electrode on the insulating layer is located between orthographic projections of two adjacent sub-driving electrodes on the insulating layer, and an orthographic projection of the second sub-sensing electrode on the insulating layer is located between orthographic projections of two adjacent sub-driving electrodes on the insulating layer.

[0023] The first touch electrode layer also includes a metal bridge, the sub-drive electrode includes a first drive branch and a second drive branch, the first drive branch and the second drive branch each include a fifth connecting segment and a sixth connecting segment, the ends of the fifth connecting segment are cross-connected with the ends of the sixth connecting segment, the first drive branch and the second drive branch are mirror-symmetrical about the center line, and multiple first drive branches and multiple second drive branches are spaced apart along the second direction, and the first drive branch and the second drive branch adjacently arranged along the second direction are electrically connected through the metal bridge.

[0024] The first touch electrode layer also includes a first connecting line, which includes a first sub-connecting line and a second sub-connecting line. The first sub-connecting line is electrically connected to the first sensing branch and the third sensing branch, and the second sub-connecting line is electrically connected to the second sensing branch and the fourth sensing branch.

[0025] The second touch electrode layer further includes a second connecting line and a third connecting line, the second connecting line being electrically connected to the third sub-sensing electrode and the fourth sub-sensing electrode, and the third connecting line being electrically connected to the plurality of sub-driving electrodes; an orthographic projection of the second connecting line on the insulating layer does not overlap with an orthographic projection of the first connecting line on the insulating layer.

[0026] The touch display panel further includes a touch driving circuit; a plurality of the first sensing electrodes are arranged in an array, a plurality of the driving electrodes are arranged in an array, and a plurality of the second sensing electrodes are arranged in an array; the touch driving circuit is electrically connected to the plurality of the first sensing electrodes, the plurality of the driving electrodes, and the plurality of the second sensing electrodes, and is configured to provide a touch driving signal to each of the driving electrodes during a touch phase, receive a first touch sensing signal provided by each of the first sensing electrodes and a second touch sensing signal provided by each of the second sensing electrodes, and calculate a touch position based on at least one of the first touch sensing signal and the second touch signal.

[0027] The present application also provides a touch display device, including a touch display panel and a driver chip, the touch display panel being electrically connected to the driver chip. The touch display panel comprises: a panel body, a first touch electrode layer, an insulating layer, and a second touch electrode layer, wherein the first touch electrode layer is disposed on the panel body and comprises first sensing electrodes; the insulating layer is disposed on the first touch electrode layer; and the second touch electrode layer is disposed on the insulating layer and comprises driving electrodes and second sensing electrodes. The first sensing electrodes, the driving electrodes, and the second sensing electrodes are spaced apart from each other in a direction away from the same reference point, and the orthographic projection of the driving electrodes on the insulating layer is located between the orthographic projection of the first sensing electrodes and the orthographic projection of the second sensing electrodes on the insulating layer.

[0028] The first sensing electrode includes a first sub-sensing electrode and a second sub-sensing electrode, and the first sub-sensing electrode and the second sub-sensing electrode are spaced apart from each other in a direction away from the reference point.

[0029] The first sub-sensing electrode includes a first sensing branch and a second sensing branch. Each of the first and second sensing branches includes a first connecting segment and a second connecting segment. The first connecting segment crosses and connects with ends of the second connecting segment. The first and second sensing branches are mirror-symmetrical about a center line, and both ends of the first sensing branch are respectively connected to both ends of the second sensing branch. The second sub-sensing electrode includes a third and fourth sensing branch. Each of the third and fourth sensing branches includes a third connecting segment and a fourth connecting segment. The third connecting segment crosses and connects with ends of the fourth connecting segment. The third and fourth sensing branches are mirror-symmetrical about a center line, and the third and fourth sensing branches are spaced apart along the first direction.

[0030] The cross-sectional shapes of the first sub-sensing electrodes along the second direction are all circular, and the cross-sectional shapes of the second sub-sensing electrodes along the second direction are all diamond-shaped or square.

[0031] The second sensing electrode includes a third sub-sensing electrode and at least two fourth sub-sensing electrodes, the third sub-sensing electrode being concentric with the at least two fourth sub-sensing electrodes; an orthographic projection of the first sub-sensing electrode on the insulating layer is located between an orthographic projection of the third sub-sensing electrode and an orthographic projection of the fourth sub-sensing electrode on the insulating layer, and an orthographic projection of the second sub-sensing electrode on the insulating layer is located between orthographic projections of two adjacent fourth sub-sensing electrodes on the insulating layer.

[0032] The driving electrode includes a plurality of sub-driving electrodes, and the plurality of sub-driving electrodes are concentric. An orthographic projection of the first sub-sensing electrode on the insulating layer is located between orthographic projections of two adjacent sub-driving electrodes on the insulating layer, and an orthographic projection of the second sub-sensing electrode on the insulating layer is located between orthographic projections of two adjacent sub-driving electrodes on the insulating layer.

[0033] The first touch electrode layer also includes a metal bridge, the sub-drive electrode includes a first drive branch and a second drive branch, the first drive branch and the second drive branch each include a fifth connecting segment and a sixth connecting segment, the ends of the fifth connecting segment are cross-connected with the ends of the sixth connecting segment, the first drive branch and the second drive branch are mirror-symmetrical about the center line, and multiple first drive branches and multiple second drive branches are spaced apart along the second direction, and the first drive branch and the second drive branch adjacently arranged along the second direction are electrically connected through the metal bridge.

[0034] The first touch electrode layer also includes a first connecting line, which includes a first sub-connecting line and a second sub-connecting line. The first sub-connecting line is electrically connected to the first sensing branch and the third sensing branch, and the second sub-connecting line is electrically connected to the second sensing branch and the fourth sensing branch.

[0035] The second touch electrode layer further includes a second connecting line and a third connecting line, the second connecting line being electrically connected to the third sub-sensing electrode and the fourth sub-sensing electrode, and the third connecting line being electrically connected to the plurality of sub-driving electrodes; an orthographic projection of the second connecting line on the insulating layer does not overlap with an orthographic projection of the first connecting line on the insulating layer.

[0036] The touch display panel further includes a touch driving circuit; a plurality of the first sensing electrodes are arranged in an array, a plurality of the driving electrodes are arranged in an array, and a plurality of the second sensing electrodes are arranged in an array; the touch driving circuit is electrically connected to the plurality of the first sensing electrodes, the plurality of the driving electrodes, and the plurality of the second sensing electrodes, and is configured to provide a touch driving signal to each of the driving electrodes during a touch phase, receive a first touch sensing signal provided by each of the first sensing electrodes and a second touch sensing signal provided by each of the second sensing electrodes, and calculate a touch position based on at least one of the first touch sensing signal and the second touch signal.

[0037] The touch display panel provided herein is provided with first sensing electrodes and second sensing electrodes, wherein the first sensing electrodes, the second sensing electrodes, and the driving electrodes are spaced apart from the same reference point in a direction away from the reference point, and the orthographic projection of the driving electrode on the insulating layer is located between the orthographic projection of the first sensing electrode on the insulating layer and the orthographic projection of the second sensing electrode on the insulating layer. As a result, the driving electrodes form capacitances with the first sensing electrodes on the first touch electrode layer and the second sensing electrodes on the second touch electrode layer, respectively. This allows for two touch signal detections within one scanning cycle, thereby improving the touch display panel's reporting rate.

[0038] As shown in Figures 1 and 2, an embodiment of the present application provides a touch display panel 100, comprising: a panel body 10, an insulating layer 20, a first touch electrode layer 30, and a second touch electrode layer 40. The first touch electrode layer 30 is disposed on the panel body 10 and includes first sensing electrodes 31. The insulating layer 20 is disposed on the first touch electrode layer 30. The second touch electrode layer 40 is disposed on the insulating layer 20 and includes drive electrodes 41 and second sensing electrodes 42 spaced apart. The first sensing electrodes 31, the drive electrodes 41, and the second sensing electrodes 42 are spaced apart from each other in a direction away from the reference point M, with the orthographic projection of the drive electrode 41 on the insulating layer 20 located between the orthographic projections of the first sensing electrodes 31 and the second sensing electrodes 42 on the insulating layer 20.

[0039] The touch display panel provided by the embodiments of the present application is provided with first sensing electrodes and second sensing electrodes. The first sensing electrodes, the second sensing electrodes, and the driving electrodes are spaced apart from the same reference point in a direction away from the reference point. The orthographic projection of the driving electrode on the insulating layer is located between the orthographic projection of the first sensing electrode on the insulating layer and the orthographic projection of the second sensing electrode on the insulating layer. As a result, the driving electrodes form capacitances with the first sensing electrodes on the first touch electrode layer and the second sensing electrodes on the second touch electrode layer, respectively. This allows two touch signal detections to be achieved within one scanning cycle, thereby improving the reporting rate of the touch display panel.

[0040] In the embodiment of the present application, the first touch electrode layer 30 includes a plurality of first sensing electrodes 31 arranged in an array, and the second touch electrode layer 40 includes a plurality of driving electrodes 41 arranged in an array and a plurality of second sensing electrodes 42 arranged in an array.

[0041] In the embodiment of the present application, the first sensing electrodes 31 , the driving electrodes 41 , and the second sensing electrodes 42 are centered around a reference point where their orthographic projections on the insulating layer 20 overlap.

[0042] As shown in FIG3 , first sensing electrode 31 includes a first sub-sensing electrode 311 and a second sub-sensing electrode 312. First sub-sensing electrode 311 and second sub-sensing electrode 312 are concentric, and the orthographic projection of first sub-sensing electrode 311 on insulating layer 20 does not overlap with the orthographic projection of second sub-sensing electrode 312 on insulating layer 20. Specifically, first sub-sensing electrode 311 and second sub-sensing electrode 312 are centered around the same reference point.

[0043] In the embodiment of the present application, the first sub-sensing electrode 311 includes a first sensing branch 311a and a second sensing branch 311b. Each of the first sensing branch 311a and the second sensing branch 311b includes a first connecting segment and a second connecting segment. The ends of the first connecting segment and the second connecting segment are cross-connected. The first sensing branch 311a and the second sensing branch 311b are mirror-symmetrical about the center line O1, and the two ends of the first sensing branch 311a are respectively connected to the two ends of the second sensing branch 311b.

[0044] In the embodiment of the present application, the cross-sectional shape of the first sensing branch portion 311 a along the first direction X includes a diamond, a square, or a circle. As shown in FIG2 , the cross-sectional shape of the first sensing branch portion 311 a along the first direction X is a diamond.

[0045] In the embodiment of the present application, the second sub-sensing electrode 312 includes a third sensing branch 312a and a fourth sensing branch 312b. Each of the third sensing branch 312a and the fourth sensing branch 312b includes a third connecting segment and a fourth connecting segment. The third connecting segment and the fourth connecting segment are cross-connected at their ends. The third sensing branch 312a and the fourth sensing branch 312b are mirror-symmetrical about the center line O1, and are spaced apart from each other along the first direction X.

[0046] In the embodiment of the present application, the number of the second sensing branches 311 b can be 1, 2, 3, 4, 5 . . . N, where N is a positive integer greater than 0.

[0047] In the embodiment of the present application, the third sensing branch portion 312a corresponds to the first sensing branch portion 311a, and the fourth sensing branch portion 312b corresponds to the second sensing branch portion 311b. Specifically, the third sensing branch portion 312a is located on a side of the first sensing branch portion 311a away from the reference point, and the fourth sensing branch portion 312b is located on a side of the second sensing branch portion 311b away from the reference point.

[0048] In an embodiment of the present application, the first touch electrode layer 30 further includes a first connecting line 33, which includes a first sub-connecting line 331 and a second sub-connecting line 332. The first sub-connecting line 331 is electrically connected to the first sensing branch portion 311a and the third sensing branch portion 312a, and the second sub-connecting line 332 is electrically connected to the second sensing branch portion 311b and the fourth sensing branch portion 312b.

[0049] In the embodiment of the present application, the first touch electrode layer 30 further includes a metal bridge 32. The metal bridge 32 includes a first sub-bridge 321 and a second sub-bridge 322. The first sub-bridge 321 and the second sub-bridge 322 are mirror-symmetrical and spaced apart.

[0050] 4 , the second sensing electrode 42 includes a third sub-sensing electrode 421 and at least two fourth sub-sensing electrodes 422. The third sub-sensing electrode 421 is concentric with the at least two fourth sub-sensing electrodes 422. Specifically, the third sub-sensing electrode 421 and the fourth sub-sensing electrode 422 are centered on the same reference point.

[0051] In the embodiment of the present application, the third sub-sensing electrode 421 includes a fifth sensing branch portion 421 a and a sixth sensing branch portion 421 b . The fifth sensing branch portion 421 a and the sixth sensing branch portion 421 b are mirror-symmetrical, and two ends of the fifth sensing branch portion 421 a are respectively connected to two ends of the sixth sensing branch portion 421 b .

[0052] In the embodiment of the present application, the cross-sectional shape of the third sub-sensing electrode 421 along the first direction X includes a diamond, a square, or a circle. As shown in FIG3 , the cross-sectional shape of the third sub-sensing electrode 421 along the first direction X is a diamond.

[0053] In the embodiment of the present application, the fourth sub-sensing electrode 422 includes a seventh sensing branch portion 422a and an eighth sensing branch portion 422b. The seventh sensing branch portion 422a and the eighth sensing branch portion 422b are mirror-symmetrical. The seventh sensing branch portion 422a is located on a side of the fifth sensing branch portion 421a away from the reference point, and the eighth sensing branch portion 422b is located on a side of the sixth sensing branch portion 421b away from the reference point.

[0054] In the embodiment of the present application, the first sub-sensing electrode 311 , the second sub-sensing electrode 312 , the third sub-sensing electrode 421 , and the fourth sub-sensing electrode 422 have the same cross-sectional shape along the first direction X. Preferably, the cross-sectional shape of the first sub-sensing electrode 311 , the second sub-sensing electrode 312 , the third sub-sensing electrode 421 , and the fourth sub-sensing electrode 422 along the first direction X is a square or a diamond.

[0055] In the embodiment of the present application, the second touch electrode layer 40 further includes a second connecting line 43 , and the second connecting line 43 is electrically connected to the third sub-sensing electrode 421 and the fourth sub-sensing electrode 422 .

[0056] In the embodiment of the present application, the second connection line 43 extends along the first direction X, and the third connection line 44 extends along the second direction Y. The first direction X and the second direction Y are perpendicular.

[0057] In the embodiment of the present application, the second connection line 43 includes a third sub-connection line 431 and a fourth sub-connection line 432. The third sub-connection line 431 is electrically connected to the fifth sensing branch portion 421a and the seventh sensing branch portion 422a. The fourth sub-connection line 432 is electrically connected to the sixth sensing branch portion 421b and the eighth sensing branch portion 422b.

[0058] In the embodiment of the present application, the driving electrode 41 includes a plurality of sub-driving electrodes 411 , and the plurality of sub-driving electrodes 411 are concentric. Specifically, the plurality of sub-driving electrodes 411 are centered around the same reference point.

[0059] As shown in FIG5 , the orthographic projection of the first sub-sensing electrode 311 on the insulating layer 20 is located between the orthographic projections of the two adjacent sub-driving electrodes 411 on the insulating layer 20 , and the orthographic projection of the second sub-sensing electrode 312 on the insulating layer 20 is located between the orthographic projections of the two adjacent sub-driving electrodes 411 on the insulating layer 20 .

[0060] In the embodiment of the present application, the distance from the third sub-sensing electrode 421 to the reference point M is smaller than the distance from the sub-driving electrode 411 to the reference point M.

[0061] In the embodiment of the present application, the orthographic projection of the first sub-sensing electrode 311 on the insulating layer 20 and the orthographic projection of the second sub-sensing electrode 312 on the insulating layer 20 are located between the orthographic projections of the same two adjacent sub-driving electrodes 411 on the insulating layer 20 .

[0062] In the embodiment of the present application, the second touch electrode layer 40 further includes third connection lines 44, which are electrically connected to the plurality of sub-driving electrodes 411. Specifically, the third connection lines 44 include a fifth sub-connection line 441 and a sixth sub-connection line 442. The fifth sub-connection line 441 is electrically connected to the plurality of first driving branches 411a spaced apart along the second direction Y, and the sixth sub-connection line 442 is electrically connected to the plurality of second driving branches 411b spaced apart along the second direction Y.

[0063] In the embodiment of the present application, the orthographic projection of first sub-sensing electrode 311 on insulating layer 20 is located between the orthographic projections of two adjacent sub-driving electrodes 411 on insulating layer 20, wherein both sub-driving electrodes 411 are located between third sub-sensing electrode 421 and fourth sub-sensing electrode 422. Furthermore, the orthographic projection of second sub-sensing electrode 312 on insulating layer 20 is located between the orthographic projections of two adjacent sub-driving electrodes 411 on insulating layer 20, wherein both sub-driving electrodes 411 are located on the side of fourth sub-sensing electrode 422 away from the reference point.

[0064] As another embodiment (not shown), two adjacent sub-driving electrodes 411 may both be located on the side of the fourth sub-sensing electrode 422 away from the reference point. Alternatively, two adjacent sub-driving electrodes 411 may both be located on the side of the fourth sub-sensing electrode 422 closer to the reference point. Alternatively, one of the two adjacent sub-driving electrodes 411 may be located on the side of the fourth sub-sensing electrode 422 away from the reference point, and the other of the two adjacent sub-driving electrodes 411 may be located on the side of the fourth sub-sensing electrode 422 closer to the reference point.

[0065] In an embodiment of the present application, the sub-driving electrode 411 includes a first driving branch portion 411a and a second driving branch portion 411b, and the first driving branch portion 411a and the second driving branch portion 411b both include a fifth connecting segment and a sixth connecting segment, and the ends of the fifth connecting segment and the sixth connecting segment are cross-connected. The first driving branch portion 411a and the second driving branch portion 411b are mirror-symmetrical about the center line 02, and multiple first driving branch portions 411a and multiple second driving branch portions 411b are arranged at intervals along the second direction Y, and the first driving branch portion 411a and the second driving branch portion 411b arranged adjacent to each other along the second direction Y are electrically connected through a metal bridge 32.

[0066] As shown in FIG. 3 and FIG. 5 , the metal bridge 32 is provided on a side of the first sub-sensing electrode 311 close to the reference point M.

[0067] In the embodiment of the present application, the metal bridge 32 includes a first sub-bridge 321 and a second sub-bridge 322. The first end of the first driving branch 411a in the sub-driving electrode 411 near the third sub-sensing electrode 421 is electrically connected to the first end of the first sub-bridge 321, and the first end of the second driving branch 411b in the sub-driving electrode 411 near the third sub-sensing electrode 421 is electrically connected to the second end of the first sub-bridge 321. The second end of the first driving branch 411a in the sub-driving electrode 411 near the third sub-sensing electrode 421 is electrically connected to the first end of the second sub-bridge 322, and the second end of the second driving branch 411b in the sub-driving electrode 411 near the third sub-sensing electrode 421 is electrically connected to the second end of the second sub-bridge 322.

[0068] As shown in FIG. 6 , the first sub-sensing electrode 311 and the third sub-sensing electrode 421 have the same cross-sectional shape along the first direction X, and the second sub-sensing electrode 312 and the fourth sub-sensing electrode 422 have the same cross-sectional shape along the first direction X.

[0069] Specifically, the cross-sectional shapes of the first sub-sensing electrode 311 and the third sub-sensing electrode 421 along the first direction X or the second direction Y are both circular, and the cross-sectional shapes of the second sub-sensing electrode 312 and the fourth sub-sensing electrode 422 along the first direction X or the second direction Y are both diamond-shaped or square.

[0070] In the embodiment of the present application, the orthographic projection of the second connecting line 43 on the insulating layer 20 does not overlap with the orthographic projection of the first connecting line 33 on the insulating layer 20 , thereby avoiding signal interference caused by line overlap.

[0071] As another embodiment (not shown in the figures), the cross-sectional shapes of the first sub-sensing electrode 311 and the third sub-sensing electrode 421 along the first direction X are both rhombus or square, and the cross-sectional shapes of the second sub-sensing electrode 312 and the fourth sub-sensing electrode 422 along the first direction X are both non-closed circles.

[0072] As another embodiment (not shown in the figure), the cross-section of the first sub-sensing electrode 311 along the first direction X is circular, and the cross-section of the second sub-sensing electrode 312 , the third sub-sensing electrode 421 , and the fourth sub-sensing electrode 422 along the first direction X is diamond or square.

[0073] In another embodiment (not shown in the figures), the cross-sectional shape of the third sub-sensing electrode 421 along the first direction X is circular, and the cross-sectional shape of the first sub-sensing electrode 311, the second sub-sensing electrode 312, and the fourth sub-sensing electrode 422 along the first direction X is rhombus or square. The cross-sectional shape of the second sub-sensing electrode 312 and the fourth sub-sensing electrode 422 along the first direction X is a non-closed rhombus or a non-closed square.

[0074] As shown in FIG7 , the orthographic projection of the first sub-sensing electrode 311 on the insulating layer 20 is located between the orthographic projections of the third sub-sensing electrode 421 and the fourth sub-sensing electrode 422 on the insulating layer 20 , and the orthographic projection of the second sub-sensing electrode 312 on the insulating layer 20 is located between the orthographic projections of two adjacent fourth sub-sensing electrodes 422 on the insulating layer 20 .

[0075] In the embodiment of the present application, a distance L1 between an orthographic projection of the first sub-sensing electrode 311 on the insulating layer 20 and an orthographic projection of the third sub-sensing electrode 421 on the insulating layer 20 is smaller than a distance L2 between an orthographic projection of the first sub-sensing electrode 311 on the insulating layer 20 and an orthographic projection of the adjacent fourth sub-sensing electrode 422 on the insulating layer 20.

[0076] In another embodiment (not shown in the figures), the distance between the orthographic projection of the first sub-sensing electrode 311 on the insulating layer 20 and the orthographic projection of the third sub-sensing electrode 421 on the insulating layer 20 is equal to the distance between the orthographic projection of the first sub-sensing electrode 311 on the insulating layer 20 and the orthographic projection of the fourth sub-sensing electrode 422 on the insulating layer 20.

[0077] In another embodiment (not shown in the figures), the distance between the orthographic projection of second sub-sensing electrode 312 on insulating layer 20 and the orthographic projection of fourth sub-sensing electrode 422 located on the side of second sub-sensing electrode 312 closer to the reference point on insulating layer 20 is less than or equal to the distance between the orthographic projection of second sub-sensing electrode 312 on insulating layer 20 and the orthographic projection of fourth sub-sensing electrode 422 located on the side of second sub-sensing electrode 312 farther from the reference point on insulating layer 20.

[0078] As shown in FIG8 , the touch display panel further includes a touch driving circuit 50 , which includes a plurality of driving signal terminals (TX1, TX2, ...) arranged at intervals along a first direction X, and a plurality of first sensing signal terminals (RX1, RX2, ...) and second sensing signal terminals (RX1′, RX2′, ...) arranged at intervals along a second direction Y.

[0079] Specifically, the touch driving circuit 50 may also include a plurality of driving signal terminals (TX1, TX2, ...) arranged at intervals along the second direction Y, and a plurality of first sensing signal terminals (RX1, RX2, ...) and second sensing signal terminals (RX1', RX2', ...) arranged at intervals along the first direction X.

[0080] In the embodiment of the present application, the first sensing signal terminals (RX1, RX2, ...) are electrically connected to a plurality of first sensing electrodes 31 in a row or a column. The driving signal terminals (TX1, TX2, ...) are electrically connected to a plurality of driving electrodes 41 in a row or a column. The second sensing signal terminals (RX1', RX2', ...) are electrically connected to a plurality of second sensing electrodes 42 in a row or a column.

[0081] The touch driving circuit 50 is configured to provide a touch driving signal to each driving electrode 41 during a touch phase, receive a first touch sensing signal provided by each first sensing electrode 31, and receive a second touch sensing signal provided by each second sensing electrode 42, so as to calculate a touch position based on at least one of the first touch sensing signal and the second touch sensing signal.

[0082] As shown in Figure 9, the prior art can only detect a touch signal once within a scanning cycle. That is, in a touch phase (n-1, n, n+1), the sub-driving electrode receives the touch driving signal Tx, and the sub-sensing electrode performs a touch signal Rx detection once. The touch display panel provided in the present application can detect touch signals twice within a scanning cycle. That is, in a touch phase (n-1, n, n+1), the sub-driving electrode receives the touch driving signal Tx, the sub-sensing electrodes in the first sensing electrodes perform a touch signal Rx detection once, and the sub-sensing electrodes in the second sensing electrodes perform a touch signal Rx' detection once. This enables multiple touch operation detections in the same area, improving the touch reporting rate.

[0083] In an embodiment of the present application, a frame of display image of a touch display panel may include multiple touch phases and multiple display phases. The touch phase and display phase of the touch display panel are performed separately to prevent the display signal used to control the display unit (not shown) of the touch display panel from interfering with the touch drive signal and touch detection signal used to determine the touch position. In each display phase, a display signal can be provided to at least part of the display unit, and in each touch phase, a touch drive signal can be provided to each touch sub-drive electrode 411, and touch detection signals fed back from each touch sub-sensing electrode (first sensing electrode 31 / second sensing electrode 42) can be received.

[0084] On the other hand, the present application further provides a touch display device, comprising the touch display panel and a driver chip as described above, wherein the touch display panel is electrically connected to the driver chip.

[0085] The above is a detailed introduction to a display panel driving method and a display device provided in the embodiments of the present application. The description of the above embodiments is only used to help understand the core idea of ​​the present application, and the above description should not be understood as limiting the scope of protection of the present application.

Claims

1. A touch display panel, comprising: Panel body; A first touch electrode layer, wherein the first touch electrode layer is disposed on the panel body, and the first touch electrode layer includes a first sensing electrode; an insulating layer, wherein the insulating layer is disposed on the first touch electrode layer; a second touch electrode layer, the second touch electrode layer being disposed on the insulating layer, the second touch electrode layer comprising a driving electrode and a second sensing electrode; The first sensing electrodes, the driving electrodes, and the second sensing electrodes are spaced apart from the same reference point in a direction away from the reference point, and an orthographic projection of the driving electrode on the insulating layer is located between an orthographic projection of the first sensing electrode on the insulating layer and an orthographic projection of the second sensing electrode on the insulating layer.

2. The touch display panel according to claim 1, wherein: The first sensing electrode includes a first sub-sensing electrode and a second sub-sensing electrode, and the first sub-sensing electrode and the second sub-sensing electrode are spaced apart from the reference point in a direction away from the reference point.

3. The touch display panel according to claim 2, wherein: The first sub-sensing electrode includes a first sensing branch portion and a second sensing branch portion, each of the first sensing branch portion and the second sensing branch portion includes a first connecting segment and a second connecting segment, the first connecting segment and the second connecting segment are cross-connected at their ends, the first sensing branch portion and the second sensing branch portion are mirror-symmetrical about a center line, and two ends of the first sensing branch portion are respectively connected to two ends of the second sensing branch portion; The second sub-sensing electrode includes a third sensing branch portion and a fourth sensing branch portion, the third sensing branch portion and the fourth sensing branch portion both include a third connecting segment and a fourth connecting segment, the third connecting segment and the fourth connecting segment are cross-connected at their ends, the third sensing branch portion and the fourth sensing branch portion are mirror-symmetrical about a center line, and the third sensing branch portion and the fourth sensing branch portion are spaced apart along the first direction.

4. The touch display panel according to claim 2, wherein: The cross-sectional shapes of the first sub-sensing electrodes along the second direction are all circular, and the cross-sectional shapes of the second sub-sensing electrodes along the second direction are all rhombus-shaped or square-shaped.

5. The touch display panel according to claim 1, wherein: The second sensing electrode includes a third sub-sensing electrode and at least two fourth sub-sensing electrodes, and the third sub-sensing electrode is concentric with the at least two fourth sub-sensing electrodes; The orthographic projection of the first sub-sensing electrode on the insulating layer is located between the orthographic projection of the third sub-sensing electrode on the insulating layer and the orthographic projection of the fourth sub-sensing electrode on the insulating layer, and the orthographic projection of the second sub-sensing electrode on the insulating layer is located between the orthographic projections of two adjacent fourth sub-sensing electrodes on the insulating layer.

6. The touch display panel according to claim 2, wherein: The driving electrode comprises a plurality of sub-driving electrodes, and the plurality of sub-driving electrodes are concentric; The orthographic projection of the first sub-sensing electrode on the insulating layer is located between the orthographic projections of two adjacent sub-driving electrodes on the insulating layer, and the orthographic projection of the second sub-sensing electrode on the insulating layer is located between the orthographic projections of two adjacent sub-driving electrodes on the insulating layer.

7. The touch display panel according to claim 6, wherein: The first touch electrode layer also includes a metal bridge, the sub-driving electrode includes a first driving branch portion and a second driving branch portion, the first driving branch portion and the second driving branch portion both include a fifth connecting segment and a sixth connecting segment, the fifth connecting segment and the end portion of the sixth connecting segment are cross-connected, the first driving branch portion and the second driving branch portion are mirror-symmetrical about a center line, and a plurality of the first driving branch portions and a plurality of the second driving branch portions are spaced apart along a second direction, and the first driving branch portion and the second driving branch portion adjacently arranged along the second direction are electrically connected through the metal bridge.

8. The touch display panel according to claim 6, wherein: The first touch electrode layer also includes a first connection line, which includes a first sub-connection line and a second sub-connection line. The first sub-connection line is electrically connected to the first sensing branch and the third sensing branch, and the second sub-connection line is electrically connected to the second sensing branch and the fourth sensing branch.

9. The touch display panel according to claim 8, wherein: The second touch electrode layer further includes a second connection line and a third connection line, the second connection line is electrically connected to the third sub-sensing electrode and the fourth sub-sensing electrode, and the third connection line is electrically connected to the plurality of sub-driving electrodes; An orthographic projection of the second connecting line on the insulating layer has no overlap with an orthographic projection of the first connecting line on the insulating layer.

10. The touch display panel according to claim 1, wherein: The touch display panel also includes a touch driving circuit; A plurality of the first sensing electrodes are arranged in an array, a plurality of the driving electrodes are arranged in an array, and a plurality of the second sensing electrodes are arranged in an array; The touch driving circuit is electrically connected to the plurality of first sensing electrodes, the plurality of driving electrodes, and the plurality of second sensing electrodes. The touch driving circuit is used to provide a touch driving signal to each of the driving electrodes in a touch stage, receive a first touch sensing signal provided by each of the first sensing electrodes and receive a second touch sensing signal provided by each of the second sensing electrodes, and calculate a touch position according to at least one of the first touch sensing signal and the second touch signal.

11. A touch display device, wherein: The touch display panel and the driving chip are electrically connected to each other, and the touch display panel includes: Panel body; A first touch electrode layer, wherein the first touch electrode layer is disposed on the panel body, and the first touch electrode layer includes a first sensing electrode; an insulating layer, wherein the insulating layer is disposed on the first touch electrode layer; a second touch electrode layer, the second touch electrode layer being disposed on the insulating layer, the second touch electrode layer comprising a driving electrode and a second sensing electrode; The first sensing electrodes, the driving electrodes, and the second sensing electrodes are spaced apart from the same reference point in a direction away from the reference point, and an orthographic projection of the driving electrode on the insulating layer is located between an orthographic projection of the first sensing electrode on the insulating layer and an orthographic projection of the second sensing electrode on the insulating layer.

12. The touch display device according to claim 11, wherein: The first sensing electrode includes a first sub-sensing electrode and a second sub-sensing electrode, and the first sub-sensing electrode and the second sub-sensing electrode are spaced apart from the reference point in a direction away from the reference point.

13. The touch display device according to claim 12, wherein: The first sub-sensing electrode includes a first sensing branch portion and a second sensing branch portion, each of the first sensing branch portion and the second sensing branch portion includes a first connecting segment and a second connecting segment, the first connecting segment and the second connecting segment are cross-connected at their ends, the first sensing branch portion and the second sensing branch portion are mirror-symmetrical about a center line, and two ends of the first sensing branch portion are respectively connected to two ends of the second sensing branch portion; The second sub-sensing electrode includes a third sensing branch portion and a fourth sensing branch portion, the third sensing branch portion and the fourth sensing branch portion both include a third connecting segment and a fourth connecting segment, the third connecting segment and the fourth connecting segment are cross-connected at their ends, the third sensing branch portion and the fourth sensing branch portion are mirror-symmetrical about a center line, and the third sensing branch portion and the fourth sensing branch portion are spaced apart along the first direction.

14. The touch display device according to claim 12, wherein: The cross-sectional shapes of the first sub-sensing electrodes along the second direction are all circular, and the cross-sectional shapes of the second sub-sensing electrodes along the second direction are all rhombus-shaped or square-shaped.

15. The touch display device according to claim 11, wherein: The second sensing electrode includes a third sub-sensing electrode and at least two fourth sub-sensing electrodes, and the third sub-sensing electrode is concentric with the at least two fourth sub-sensing electrodes; The orthographic projection of the first sub-sensing electrode on the insulating layer is located between the orthographic projection of the third sub-sensing electrode on the insulating layer and the orthographic projection of the fourth sub-sensing electrode on the insulating layer, and the orthographic projection of the second sub-sensing electrode on the insulating layer is located between the orthographic projections of two adjacent fourth sub-sensing electrodes on the insulating layer.

16. The touch display device according to claim 12, wherein: The driving electrode comprises a plurality of sub-driving electrodes, and the plurality of sub-driving electrodes are concentric; The orthographic projection of the first sub-sensing electrode on the insulating layer is located between the orthographic projections of two adjacent sub-driving electrodes on the insulating layer, and the orthographic projection of the second sub-sensing electrode on the insulating layer is located between the orthographic projections of two adjacent sub-driving electrodes on the insulating layer.

17. The touch display device according to claim 16, wherein: The first touch electrode layer also includes a metal bridge, the sub-driving electrode includes a first driving branch portion and a second driving branch portion, the first driving branch portion and the second driving branch portion both include a fifth connecting segment and a sixth connecting segment, the ends of the fifth connecting segment and the sixth connecting segment are cross-connected, the first driving branch portion and the second driving branch portion are mirror-symmetrical about a center line, and a plurality of the first driving branch portions and a plurality of the second driving branch portions are spaced apart along the second direction, and the first driving branch portion and the second driving branch portion adjacently arranged along the second direction are electrically connected through the metal bridge.

18. The touch display device according to claim 16, wherein: The first touch electrode layer also includes a first connection line, which includes a first sub-connection line and a second sub-connection line. The first sub-connection line is electrically connected to the first sensing branch and the third sensing branch, and the second sub-connection line is electrically connected to the second sensing branch and the fourth sensing branch.

19. The touch display device according to claim 18, wherein: The second touch electrode layer further includes a second connection line and a third connection line, the second connection line is electrically connected to the third sub-sensing electrode and the fourth sub-sensing electrode, and the third connection line is electrically connected to the plurality of sub-driving electrodes; An orthographic projection of the second connecting line on the insulating layer has no overlap with an orthographic projection of the first connecting line on the insulating layer.

20. The touch display device according to claim 11, wherein: The touch display panel also includes a touch driving circuit; A plurality of the first sensing electrodes are arranged in an array, a plurality of the driving electrodes are arranged in an array, and a plurality of the second sensing electrodes are arranged in an array; The touch driving circuit is electrically connected to the plurality of first sensing electrodes, the plurality of driving electrodes, and the plurality of second sensing electrodes. The touch driving circuit is used to provide a touch driving signal to each of the driving electrodes in a touch stage, receive a first touch sensing signal provided by each of the first sensing electrodes and receive a second touch sensing signal provided by each of the second sensing electrodes, and calculate a touch position according to at least one of the first touch sensing signal and the second touch signal.

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