Touch display panel, touch display device and manufacturing method

Abstract

A touch display panel, a touch display device, and a manufacturing method. The touch display panel includes: a display substrate (500), including a display area (570) and a non-display area (560) adjacent to the display area (570), the non-display area (560) including irregular-shaped areas (561, 562); and a touch electrode layer on the display substrate (500) and located in the display area (570). The touch electrode layer includes a plurality of first electrodes (511) and a plurality of second electrodes (512) arranged in an array. The plurality of first electrodes (511) are insulated from the plurality of second electrodes (512). The irregular-shaped areas (561, 562) are areas where at least one of the plurality of first electrodes (511) or at least one of the plurality of second electrodes (512) is incomplete. A part of the positive projection of the touch electrode layer on the display substrate (500) overlaps with a part of the positive projection of the irregular-shaped areas (561, 562) on the display substrate (500). Thereby, the integrity of the incomplete electrode pattern is improved, and the touch performance of the touch display panel near the irregular-shaped areas (561, 562) is improved.

Description

Technical Field

[0001] The present disclosure relates to touch display technology, and particularly to a touch display panel, a touch display device, and a manufacturing method thereof. Background Art

[0002] In a touch panel, the detection of a touch position is achieved by cross-arranging transmitting (Tx) electrodes and receiving (Rx) electrodes on the panel in mutually orthogonal directions. In the electrode layout scheme proposed by the Flexible Multiple Layer on Cell (FMLOC) technology on a cell, the Tx electrodes and the Rx electrodes are arranged on the same layer. The Tx electrodes and the Rx electrodes form a pattern unit, and the touch position is determined by monitoring the change in the electrical parameters of the electrode pattern. Summary of the Invention

[0003] According to one aspect of an embodiment of the present disclosure, there is provided a touch display panel, including: a display substrate including a display area and a non-display area adjacent to the display area, the non-display area including a shaped area; and a touch electrode layer on the display substrate and located in the display area, the touch electrode layer including a plurality of first electrodes and a plurality of second electrodes arranged in an array, the plurality of first electrodes being insulated from the plurality of second electrodes, wherein the shaped area is an area where at least one of the plurality of first electrodes or at least one of the plurality of second electrodes is incomplete, and a part of the touch electrode layer projects orthogonally onto the display substrate and overlaps with a part of the shaped area projected orthogonally onto the display substrate.

[0004] In some embodiments, the non-display area includes a first non-display area located on at least one side of the display area, and the shaped area includes a first shaped area located in the first non-display area; wherein the part of the touch electrode layer includes a first part extending into the first shaped area, and the first part projects orthogonally onto the display substrate and overlaps with a part of the first shaped area projected orthogonally onto the display substrate.

[0005] In some embodiments, the non-display area includes a second non-display area inside the display area, and the shaped area includes a second shaped area located in the second non-display area; wherein the part of the touch electrode layer further includes a second part extending into the second shaped area, and the second part projects orthogonally onto the display substrate and overlaps with a part of the second shaped area projected orthogonally onto the display substrate.

[0006] In some embodiments, the first shaped area is located at an arcuate vertex position of the display substrate.

[0007] In some embodiments, the second special-shaped region includes a through hole penetrating the display substrate or a blind hole not penetrating the display substrate.

[0008] In some embodiments, the display substrate includes: a substrate; a device structure layer on one side of the substrate, the device structure layer including a plurality of transistors; a planarization layer on a side of the device structure layer away from the substrate; a plurality of third electrodes on a side of the planarization layer away from the device structure layer, the plurality of third electrodes being located in the display region, and the plurality of third electrodes being electrically connected to different transistors among the plurality of transistors respectively; a pixel defining layer on a side of the planarization layer away from the device structure layer, the pixel defining layer having a plurality of openings, the pixel defining layer being located in the display region and at least a part of the special-shaped region, wherein the openings of the pixel defining layer in the display region expose at least a part of the third electrodes, and the openings of the pixel defining layer in at least a part of the special-shaped region expose a part of the planarization layer; a functional layer in each of the plurality of openings of the pixel defining layer; a fourth electrode on a side of the functional layer away from the substrate; and a packaging layer on a side of the fourth electrode away from the functional layer; wherein, the touch electrode layer is located on a side of the packaging layer away from the substrate.

[0009] In some embodiments, each first electrode includes a first electrode line, a positive projection of the first electrode line on the substrate being located between positive projections of different openings of the pixel defining layer on the substrate; and each second electrode includes a second electrode line, a positive projection of the second electrode line on the substrate being located between positive projections of different openings of the pixel defining layer on the substrate.

[0010] In some embodiments, the part of the touch electrode layer includes at least one of a part where the first electrode line extends into the special-shaped region and a part where the second electrode line extends into the special-shaped region.

[0011] In some embodiments, the plurality of first electrodes includes multiple columns of first electrodes arranged along a first direction, adjacent first electrodes in each column of first electrodes being electrically connected; and the plurality of second electrodes includes multiple rows of second electrodes arranged along a second direction, adjacent second electrodes in each row of second electrodes being electrically connected; wherein, the first direction intersects the second direction.

[0012] In some embodiments, the first non-display area includes a first sub-area located on one side of the display area, a second sub-area located on one side of the display area adjacent to the first sub-area, a third sub-area located on the side of the display area opposite to the first sub-area, and a fourth sub-area located on the side of the display area opposite to the second sub-area. Wherein, a first included angle is formed between the third sub-area and the fourth sub-area, a second included angle is formed between the first sub-area and the second sub-area, and the distance between the second irregular area and the first included angle is less than the distance between the second irregular area and the second included angle.

[0013] In some embodiments, the touch display panel further includes: a plurality of first wires electrically connected to the multiple columns of first electrodes one by one, at least located in the second sub-area and the third sub-area, wherein the first wire corresponding to the column of first electrodes closest to the second sub-area among the multiple first wires is closest to the display area; and a plurality of second wires electrically connected to the multiple rows of second electrodes one by one, at least located in the fourth sub-area, wherein the second wire corresponding to the row of second electrodes closest to the first sub-area among the multiple second wires is closest to the display area.

[0014] In some embodiments, the portion with the smallest occupied area in the first wire or the second wire is located at the position of the first included angle.

[0015] In some embodiments, the multiple first electrodes and the multiple second electrodes form multiple electrode patterns, and the multiple electrode patterns include: an incomplete first electrode pattern adjacent to the irregular area, a third electrode pattern, and a fifth electrode pattern. The first electrode pattern, the third electrode pattern, and the fifth electrode pattern are respectively adjacent to the third sub-area and extend into the third sub-area; wherein, the first electrode pattern extends into the third sub-area by 200 microns to 250 microns, the third electrode pattern extends into the third sub-area by 100 microns to 180 microns, and the fifth electrode pattern extends into the third sub-area by 300 microns to 380 microns.

[0016] In some embodiments, the ratio of the distance between adjacent first wires in the third sub-area among the multiple first wires to the width of at least a part of the first electrode pattern, the third electrode pattern, and the fifth electrode pattern that extends into the third sub-area is 0.03 to 0.17.

[0017] According to another aspect of the embodiments of the present disclosure, a touch display device is provided, including: the touch display panel as described above.

[0018] According to another aspect of the embodiments of the present disclosure, there is provided a method for manufacturing a touch display panel, including: providing a display substrate, the display substrate including a display area and a non-display area adjacent to the display area, the non-display area including a shaped area; and forming a touch electrode layer on the display substrate, the touch electrode layer being located in the display area, the touch electrode layer including a plurality of first electrodes and a plurality of second electrodes arranged in an array, the plurality of first electrodes being insulated from the plurality of second electrodes, wherein the shaped area is an area where at least one of the plurality of first electrodes or at least one of the plurality of second electrodes is incomplete, and a part of the orthographic projection of the touch electrode layer on the display substrate overlaps with a part of the orthographic projection of the shaped area on the display substrate.

[0019] Other features and advantages of the present disclosure will become clear from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings forming a part of the specification depict embodiments of the present disclosure and, together with the description, are used to explain the principles of the present disclosure.

[0021] With reference to the accompanying drawings, the present disclosure can be more clearly understood from the following detailed description, where:

[0022] Figure 1 is a top view schematically showing a touch display panel in the related art;

[0023] Figure 2 is schematically showing the touch display panel in the related art at Figure 1 a partial enlarged view of the structure at box A therein;

[0024] Figure 3 is a schematic structural diagram schematically showing a touch electrode in the related art;

[0025] Figure 4 is a partial schematic view schematically showing a touch display panel in the related art;

[0026] Figure 5A is a top view schematically showing a touch display panel according to an embodiment of the present disclosure;

[0027] Figure 5B is schematically showing the touch display panel according to an embodiment of the present disclosure at

[0028] Figure 5A a partial enlarged view of the structure at box B therein;

[0029] Figure 5Cis a partial enlarged view schematically showing the structure of the touch display panel according to an embodiment of the present disclosure at box C in Figure 5A ;

[0030] Figure 6 is a partial enlarged view schematically showing the touch display panel according to an embodiment of the present disclosure at box D in Figure 5B ;

[0031] Figure 7 is a cross-sectional view schematically showing the structure taken along line E-E' in Figure 6 ;

[0032] Figure 8 is a top view schematically showing the touch display panel according to another embodiment of the present disclosure;

[0033] Figure 9 is a partial enlarged view schematically showing the touch display panel according to an embodiment of the present disclosure at box F in Figure 8 ;

[0034] Figure 10 is a partial enlarged view schematically showing the touch display panel according to an embodiment of the present disclosure at box G in

[0035] Figure 9 ;

[0036] Figure 11 is a flowchart schematically showing a manufacturing method of the touch display panel according to an embodiment of the present disclosure.

[0037] It should be understood that the sizes of the various parts shown in the drawings do not necessarily have to be drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. Detailed Description of Specific Embodiments

[0038] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps, the compositions of the materials, the numerical expressions and the numerical values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0039] As used in this disclosure, terms such as "first", "second" and similar words do not denote any order, quantity or importance, but are merely used to distinguish different parts. Words such as "comprising" or "including" mean that the elements before such word cover the elements listed after such word, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0040] In this disclosure, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0041] All terms used in this disclosure (including technical terms or scientific terms) have the same meaning as understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, for example, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0042] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods and devices should be regarded as part of the specification.

[0043] Figure 1 is a top view schematically showing a touch display panel in the related art.

[0044] As Figure 1 shown, the touch display panel includes a display substrate 100. The display substrate 100 includes a display area 170 and a non-display area 160 adjacent to the display area. For example, the non-display area 160 includes a special-shaped area 161. The special-shaped area 161 is located at a position adjacent to the rounded corner of the display area. Additionally, Figure 1 also shows a touch electrode and a conductive bridge 114. The touch electrode includes a first electrode 111 and a second electrode 112. A first peripheral wire 102 is electrically connected to the first electrode 111, and a second peripheral wire 104 is electrically connected to the second electrode 112.

[0045] It should be noted that the "special-shaped area" in the embodiments of this disclosure refers to an area where the electrode pattern of the touch electrode (to be described below) is incomplete. For example, the special-shaped area may include a rounded corner area or a dug hole area, etc.

[0046] Figure 2 is a partial enlarged view schematically showing the structure of the touch display panel in the related art at box A in Figure 1 . As Figure 2 shown, the first electrode 111 and the second electrode 112 form an electrode pattern 120. The position of the touch can be determined by monitoring the change of the electrical parameters (such as capacitance value) of the electrode pattern 120. Generally, in most areas of the screen display, the electrode pattern is complete.

[0047] Figure 3 is a schematic structural diagram showing the touch electrode in the related art.

[0048] Figure 3 shows the trace 130 of the touch electrode (such as the first electrode 111 or the second electrode 112). The trace 130 of the touch electrode is arranged in the gap between sub-pixels of different colors. In addition, Figure 3 also shows the anode 140 of the light-emitting device of the sub-pixel and the opening 152 of the pixel defining layer in

[0049] Figure 4 is a partial schematic diagram showing the touch display panel in the related art.

[0050] Figure 4 shows different electrode patterns 21 to 28. The non-display area 160 has a special-shaped area 161, and this special-shaped area 161 can cause the electrode patterns 21, 25 and 26 to be incomplete. In addition, in some embodiments, the non-display area 160 may also have a special-shaped area 202. For example, this special-shaped area 202 can be a cutout. This special-shaped area 202 causes the electrode patterns 21, 22, 23 and 24 to be incomplete as well.

[0051] Therefore, on the display area adjacent to the rounded corner or cutout area of the non-display area, the electrode pattern may be incomplete. The inventors of the present disclosure have found that the integrity of the electrode pattern can affect the electrical parameters (such as capacitance value) of the electrode pattern. For example, when the integrity of the electrode pattern is less than 70%, the touch performance will deteriorate; when the integrity of the electrode pattern is even lower, the touch performance requirements may not be met. As Figure 4 shown, the electrode pattern 28 is a complete electrode pattern. The electrode patterns 21 to 25 in the rounded corner area and the cutout area are all incomplete. In particular, the electrode patterns 23, 24 and 25 have the worst integrity. Generally, for a screen with a cutout in the display area, the integrity of the electrode pattern at the cutout position and the rounded corner closer to it is the worst.

[0052] Since the shapes of display screens in the related art are becoming more and more diverse, there are more and more special-shaped screens. The integrity of the electrode pattern at the special-shaped area of the screen may be poor (for example Figure 4The electrode patterns 21 to 26 shown in thus affect the touch performance of the screen.

[0053] In view of this, embodiments of the present disclosure provide a touch display panel to improve the touch performance of the touch display panel near the irregular area.

[0054] Figure 5A FIG. is a top view schematically showing a touch display panel according to an embodiment of the present disclosure. Figure 5B FIG. is a partial enlarged view schematically showing the structure of the touch display panel according to an embodiment of the present disclosure at Figure 5A box B in . Figure 5C FIG. is a partial enlarged view schematically showing the structure of the touch display panel according to an embodiment of the present disclosure at Figure 5A box C in .

[0055] As shown in Figure 5A The touch display panel includes a display substrate 500. The display substrate 500 includes a display area 570 and a non-display area 560 adjacent to the display area 570. The non-display area 560 includes an irregular area (such as the irregular area 561 or 562).

[0056] As shown in Figure 5A and Figure 5C The touch display panel includes a touch electrode layer on the display substrate 500 and located in the display area. The touch electrode layer includes a plurality of first electrodes 511 and a plurality of second electrodes 512 arranged in an array. The plurality of first electrodes 511 are insulated from the plurality of second electrodes 512. The first electrodes 511 and the second electrodes 512 form an electrode pattern 520. In some embodiments, the touch display panel further includes: a plurality of first wires 502 electrically connected to the plurality of first electrodes 511 in one-to-one correspondence and a plurality of second wires 504 electrically connected to the plurality of second electrodes 512 in one-to-one correspondence.

[0057] In some embodiments, as shown in Figure 5C The plurality of first electrodes 511 include a plurality of columns of first electrodes arranged along a first direction Y. Adjacent first electrodes in each column of first electrodes are electrically connected. The plurality of second electrodes 512 include a plurality of rows of second electrodes arranged along a second direction X. Adjacent second electrodes in each row of second electrodes are electrically connected. For example, adjacent second electrodes 512 in the same row can be electrically connected through a conductive bridge 514. The first direction Y intersects the second direction X. For example, the first direction Y is perpendicular to the second direction X.

[0058] For example, the first electrode 511 and the second electrode 512 can be the same film layer. The materials of the first electrode 511 and the second electrode 512 can include titanium / aluminum / titanium (Ti / Al / Ti) materials. At the position where the first electrode 511 and the second electrode 512 cross, the second electrode 512 is connected by a conductive bridge 514. The conductive bridge 514 is another film layer. The material of the conductive bridge can include titanium / aluminum / titanium. There is an insulating layer between the film layer where the conductive bridge is located and the film layer where the electrode is located.

[0059] As described above, the integrity of the electrode pattern can affect the electrical parameters of the electrode pattern. For example, Figure 5B Incomplete first electrode pattern 61, second electrode pattern 62, third electrode pattern 63, fourth electrode pattern 64, fifth electrode pattern 65, and sixth electrode pattern 66 are shown. As Figure 5B shown, an irregular area 562 causes the electrode patterns 61 to 64 to be incomplete, and another irregular area 561 causes the electrode patterns 65 and 66 to be incomplete.

[0060] In some embodiments of the present disclosure, the above-mentioned irregular area is an area that makes at least one of the plurality of first electrodes or at least one of the plurality of second electrodes incomplete. A part of the touch electrode layer extends into the irregular area. The orthographic projection of this part of the touch electrode layer on the display substrate 500 overlaps with a part of the orthographic projection of the irregular area on the display substrate 500. For example, as Figure 5B shown, a part 651 of the fifth electrode pattern 65 in the touch electrode layer enters the irregular area 561, and the orthographic projection of this part 651 on the display substrate 500 overlaps with a part of the orthographic projection of the irregular area 561 on the display substrate 500.

[0061] So far, a touch display panel according to some embodiments of the present disclosure has been provided. The touch display panel includes: a display substrate including a display area and a non-display area adjacent to the display area, the non-display area including an irregular area; and a touch electrode layer on the display substrate and located in the display area. The touch electrode layer includes a plurality of first electrodes and a plurality of second electrodes arranged in an array. The plurality of first electrodes are insulated from the plurality of second electrodes. A part of the touch electrode layer extends into the irregular area, and the orthographic projection of this part of the touch electrode layer on the display substrate overlaps with a part of the orthographic projection of the irregular area on the display substrate. By extending a part of the touch electrode layer into the irregular area, the area of the incomplete electrode pattern can be increased, the integrity of the incomplete electrode pattern can be improved, and thus the touch performance of the touch display panel near the irregular area can be improved.

[0062] In some embodiments, as Figure 5A and Figure 5BAs shown, the non-display area 560 may include a first non-display area located on at least one side of the display area. For example, the first non-display area surrounds the display area. The special-shaped area may include a first special-shaped area 561 located in the first non-display area. For example, the first special-shaped area 561 is located at the arc-shaped top corner position of the display substrate. The portion of the touch electrode layer includes a first portion extending into the first special-shaped area. The orthographic projection of the first portion on the display substrate 500 overlaps with a portion of the orthographic projection of the first special-shaped area 561 on the display substrate 500.

[0063] For example, as Figure 5B shown, the portion of the touch electrode layer includes a first portion 651 and 661 extending into the first special-shaped area 561. The first portion 651 is the portion where the fifth electrode pattern 65 extends into the first special-shaped area 561. The orthographic projection of the first portion 651 on the display substrate 500 overlaps with a portion of the orthographic projection of the first special-shaped area 561 on the display substrate 500. Another first portion 661 is the portion where the sixth electrode pattern 66 extends into the first special-shaped area 561. The orthographic projection of the first portion 661 on the display substrate 500 overlaps with another portion of the orthographic projection of the first special-shaped area 561 on the display substrate 500.

[0064] In the above embodiment, by extending a portion of the touch electrode layer into the first special-shaped area, the area of the incomplete electrode pattern can be increased, the integrity of the incomplete electrode pattern can be improved, and thus the touch performance of the touch display panel near the special-shaped area can be improved.

[0065] In some embodiments, as Figure 5A and Figure 5B shown, the non-display area 560 may include a second non-display area inside the display area 570. The special-shaped area includes a second special-shaped area 562 located in the second non-display area. For example, the second special-shaped area 562 includes a through hole penetrating the display substrate or a blind hole not penetrating the display substrate. The portion of the touch electrode layer further includes a second portion extending into the second special-shaped area 562. The orthographic projection of the second portion on the display substrate 500 overlaps with a portion of the orthographic projection of the second special-shaped area 562 on the display substrate 500.

[0066] For example, as Figure 5BAs shown, the said part of the touch control electrode layer may further include second parts 612, 622, 632, and 642 extending into the second special-shaped area 562. The second parts 612, 622, 632, and 642 are respectively the parts of the electrode patterns 61, 62, 63, and 64 extending into the second special-shaped area 562. Taking the second part 612 as an example, the orthographic projection of the second part 612 on the display substrate 500 overlaps with the orthographic projection of a part of the second special-shaped area 562 on the display substrate 500.

[0067] In the above embodiment, by extending a part of the touch control electrode layer into the second special-shaped area, the area of the incomplete electrode pattern can be increased, the integrity of the incomplete electrode pattern can be improved, and thus the touch performance of the touch display panel near the second special-shaped area can be improved.

[0068] In some other embodiments, for the electrode patterns that are incomplete due to the second special-shaped area and are located at the edge of the display area, in addition to extending into the second special-shaped area, these electrode patterns can also extend into the first non-display area. For example, as Figure 5B shown, in addition to the second part 612 extending into the second special-shaped area, the first electrode pattern 61 also has a part 613 extending into the first non-display area; in addition to the second part 632 extending into the second special-shaped area, the electrode pattern 63 also has a part 633 extending into the first non-display area. This can further expand the area of these electrode patterns, thereby further improving the integrity of these electrode patterns.

[0069] In some other embodiments, for the electrode patterns that are incomplete due to the second special-shaped area and are located at the edge of the display area, these electrode patterns can also only extend into the first non-display area without extending into the second special-shaped area.

[0070] It should be noted that although Figure 5B shows the first special-shaped area and the second special-shaped area, the scope of the touch display panel in the embodiments of the present disclosure is not limited thereto. For example, in some embodiments, the touch display panel may only include one of the first special-shaped area and the second special-shaped area. In this way, the above technical solutions can be implemented for one of the first special-shaped area and the second special-shaped area.

[0071] Figure 6 is a partial enlarged view schematically showing the touch display panel according to an embodiment of the present disclosure at Figure 5B in box D. Figure 6 The first sub-pixel 591, the second sub-pixel 592, and the third sub-pixel 593 are shown. For example, the first sub-pixel 591 is a blue sub-pixel, the second sub-pixel 592 is a green sub-pixel, and the third sub-pixel 593 is a red sub-pixel. In addition, Figure 6Also shown is a third electrode (e.g., an anode) 540 of a light-emitting device of a sub-pixel.

[0072] As Figure 6 shown, each first electrode includes a first electrode line 530. The orthographic projection of the first electrode line 530 on the substrate (to be described later) is located between the orthographic projections of different openings 552 of the pixel defining layer on the substrate. Similarly, each second electrode includes a second electrode line (similar to the first electrode line 530). The orthographic projection of the second electrode line on the substrate is located between the orthographic projections of different openings of the pixel defining layer on the substrate. This can minimize the occlusion of the light emission of the sub-pixel by the first electrode line or the second electrode line.

[0073] As Figure 6 shown, the first electrode line and the second electrode line can form a plurality of meshes. For the purpose of insulating the first electrode line from the second electrode, etc., the meshes can include notches. In some embodiments, the portion of the touch electrode layer extending into the special-shaped region includes at least one complete mesh, while the touch electrode layer adjacent to the portion of other non-display regions (i.e., the portion of the non-display region other than the special-shaped region) may not have a complete mesh extending out of the display region.

[0074] In some embodiments, as Figure 6 shown, a part of the touch electrode layer extending into the special-shaped region includes at least one of the part of the first electrode line extending into the special-shaped region and the part of the second electrode line extending into the special-shaped region.

[0075] In some embodiments, as Figure 6 shown, there is no third electrode (e.g., an anode) 540 in the region where the first electrode or the second electrode is extended, but an opening of the pixel defining layer (which can be called a pseudo PDL (Pixel Defining Layer) opening) is provided. This can ensure that the opening of the pixel defining layer at the boundary of the display region is not affected by the nearby special-shaped region, thereby improving the uniformity of the opening of the pixel defining layer in the display region and further enhancing the display effect of the display screen.

[0076] Figure 7 is a schematic cross-sectional view of the structure taken along the line E-E' in Figure 6 .

[0077] As Figure 7 shown, the display substrate 500 includes a substrate 501. For example, the substrate can include a glass substrate or a resin substrate, etc.

[0078] As Figure 7As shown, the display substrate 500 further includes a device structure layer on one side of the substrate 501. The device structure layer includes a plurality of transistors 730. For example, the transistor 730 may include an active layer 732 located on the substrate 501, a first insulating layer 731 covering the active layer 732, a gate 733 located on the side of the first insulating layer 731 away from the substrate 501, a second insulating layer 742 covering the gate 733, an interlayer dielectric layer 743 covering the second insulating layer 742, and a source 734 and a drain 735 located on the side of the interlayer dielectric layer 743 away from the substrate 501. In some embodiments, the display substrate 500 may further include a buffer layer 505 between the substrate 501 and the active layer 732. For example, the active layer 732 may be located on the buffer layer 505. The source 734 and the drain 735 are electrically connected to the active layer 732 respectively. For example, the materials of the first insulating layer 731, the second insulating layer 742, and the interlayer dielectric layer 743 may include silicon oxide, silicon nitride, etc. The materials of the gate 733, the source 734, and the drain 735 may include metal materials. The material of the active layer 732 may include semiconductor materials such as amorphous silicon or polysilicon.

[0079] In some embodiments, the device structure layer may further include a capacitor between the interlayer dielectric layer 743 and the substrate 501. The capacitor includes a first capacitor electrode 781 on the side of the first insulating layer 731 away from the substrate 501 and a second capacitor electrode 782 on the side of the second insulating layer 742 away from the first capacitor electrode 781. The first capacitor electrode 781 may be in the same layer as the gate 733 and isolated from the gate 733. The second insulating layer 742 covers the first capacitor electrode 781, and the interlayer dielectric layer 743 covers the second capacitor electrode 782.

[0080] As Figure 7 shown, the display substrate 500 further includes a planarization layer 701 on the side of the device structure layer away from the substrate 501. For example, the material of the planarization layer 701 may include an insulating material (e.g., an organic insulating material such as polyimide).

[0081] As Figure 7 shown, the display substrate 500 further includes a plurality of third electrodes 721 on the side of the planarization layer 701 away from the device structure layer. For example, the third electrode 721 is an anode. The plurality of third electrodes are located in the display area 570. The plurality of third electrodes 721 are electrically connected to different transistors among the plurality of transistors 730 respectively.

[0082] As Figure 7As shown, the display substrate 500 further includes a pixel defining layer 703 on a side of the planarization layer 701 away from the device structure layer. The pixel defining layer 703 has a plurality of openings 552. A part of the pixel defining layer 703 is located in the display area, and another part of the pixel defining layer 703 is located in at least a part of the special-shaped area. The opening 552 of the pixel defining layer 703 located in the display area exposes at least a part of the third electrode 721, and the opening 552 of the pixel defining layer 703 located in at least a part of the special-shaped area exposes a part of the planarization layer 701.

[0083] As Figure 7 shown, the display substrate 500 further includes a functional layer 723 in each of the plurality of openings 552 of the pixel defining layer 703. For example, the functional layer 723 is a light-emitting layer.

[0084] As Figure 7 shown, the display substrate 500 further includes a fourth electrode 722 on a side of the functional layer 723 away from the substrate 501. For example, the fourth electrode 722 is a cathode.

[0085] In some embodiments, as Figure 7 shown, the display substrate 500 may further include a spacer layer 705 on a side of the pixel defining layer 703 away from the substrate 501. The fourth electrode 722 covers the spacer layer 705. For example, the material of the spacer layer 705 may include an inorganic insulating material, an organic insulating material, etc.

[0086] As Figure 7 shown, the display substrate 500 further includes a packaging layer 750 on a side of the fourth electrode 722 away from the functional layer 723. For example, the packaging layer 750 may include: a first inorganic packaging layer 751 on a side of the fourth electrode 722 away from the substrate 501, an organic packaging layer 752 on a side of the first inorganic packaging layer 751 away from the substrate 501, and a second inorganic packaging layer 753 on a side of the organic packaging layer 752 away from the substrate 501. For example, the material of the first inorganic packaging layer 751 may include silicon nitride, etc., the material of the organic packaging layer 752 may include PMMA (poly(methyl methacrylate)), etc., and the material of the second inorganic packaging layer 753 may include silicon nitride, etc. The touch electrode layer is located on a side of the packaging layer 750 away from the substrate 501.

[0087] In some embodiments, as Figure 7 shown, the display substrate 500 may further include a barrier layer 761 on a side of the packaging layer 750 away from the substrate 501. For example, the material of the barrier layer 761 may include an inorganic insulating material.

[0088] In some embodiments, such as Figure 7 shown, the display substrate 500 may further include a third insulating layer 762 on a side of the barrier layer 761 away from the substrate 501. For example, the material of the third insulating layer 762 may include silicon nitride, silicon oxide, silicon oxynitride, etc. For example, as Figure 7 shown, the first electrode line 530 of the first electrode 511 of the touch electrode layer (or the second electrode line of the second electrode 512) is located on the third insulating layer 762.

[0089] As described above, the orthographic projection of the first electrode line 530 of each first electrode 511 on the substrate 501 is located between the orthographic projections of different openings 552 of the pixel defining layer 703 on the substrate 501, and the orthographic projection of the second electrode line of each second electrode 512 on the substrate 501 is located between the orthographic projections of different openings 552 of the pixel defining layer 703 on the substrate 501. This can minimize the occlusion of the light emission of the sub-pixels by the first electrode line or the second electrode line.

[0090] Figure 8 is a top view schematically showing a touch display panel according to another embodiment of the present disclosure.

[0091] As Figure 8 shown, the first non-display area 561 may include a first sub-area 5611 on one side of the display area 570, a second sub-area 5612 on a side of the display area 570 adjacent to the first sub-area 5611, a third sub-area 5613 on a side of the display area 570 opposite to the first sub-area 5611, and a fourth sub-area 5614 on a side of the display area 570 opposite to the second sub-area 5612. As Figure 8 shown, the third sub-area 5613 and the fourth sub-area 5614 form a first included angle 8001, the first sub-area 5611 and the second sub-area 5612 form a second included angle 8002, and the distance between the second irregular area 562 and the first included angle 8001 is less than the distance between the second irregular area 562 and the second included angle 8002. Or rather, the second irregular area 562 is closer to the position of the first included angle formed by the third sub-area 5613 and the fourth sub-area 5614 than the first sub-area 5611 and the second sub-area 5612.

[0092] In some embodiments, such as Figure 8As shown, the touch display panel also includes a plurality of first wires (e.g., transmitting wires) 502' electrically connected to the plurality of columns of first electrodes in a one-to-one correspondence. The plurality of first wires 502' are at least located in the second sub-region 5612 and the third sub-region 5613. For example, the plurality of first wires 502' may also be located in the first sub-region 5611. The first wire corresponding to the column of first electrodes closest to the second sub-region 5612 among the plurality of first wires 502' is closest to the display region 570. For example, the plurality of first wires 502' may be connected to the corresponding column of first electrodes in the third sub-region 5613 in the order from the first column of first electrodes closest to the second sub-region 5612 to the last column of first electrodes closest to the fourth sub-region 5614. Therefore, in the direction from the second sub-region 5612 to the fourth sub-region 5614, the number of the plurality of first wires 502' gradually decreases.

[0093] In some embodiments, Figure 8 As shown, the touch display panel also includes a plurality of second wires (e.g., receiving wires) 504' electrically connected to the plurality of rows of second electrodes 512 in a one-to-one correspondence. The plurality of second wires 504' are at least located in the fourth sub-region 5614. For example, the plurality of second wires 504' may also be located in the first sub-region 5611. The second wires corresponding to the row of second electrodes closest to the first sub-region 5611 among the plurality of second wires 504' are closest to the display region 570. For example, the plurality of second wires 504' may be connected to the corresponding row of second electrodes in the fourth sub-region 5614 in the order from the first row of second electrodes closest to the first sub-region 5611 to the last row of second electrodes closest to the third sub-region 5613. Therefore, in the direction from the first sub-region 5611 to the third sub-region 5613, the number of the plurality of second wires 504' gradually decreases.

[0094] Through the arrangement of the first wire 502' and the second wire 504' in the above embodiment, the first wire and the second wire near the second irregular region can be relatively small, so that the first electrode or the second electrode can extend more into the first non-display region near the second irregular region, thereby expanding the area of ​​the incomplete electrode pattern caused by the irregular region as much as possible. In this way, the integrity of these incomplete electrode patterns can be improved as much as possible, and the sensitivity of the touch panel can be improved.

[0095] Alternatively, the above embodiment may also be considered as arranging the second special-shaped area (eg, the hole area) at a position of the display area adjacent to a portion of the first non-display area having the least first conductive lines and second conductive lines.

[0096] Figure 9 The touch display panel according to one embodiment of the present disclosure is schematically shown in FIG. Figure 8Partial enlarged view at box F in

[0097] For example, as Figure 9 shown, a plurality of first electrodes 511 and a plurality of second electrodes 512 form a plurality of electrode patterns. The plurality of electrode patterns may include: an incomplete first electrode pattern 61, a third electrode pattern 63, and a fifth electrode pattern 65 adjacent to an irregular region (e.g., at least one of a first irregular region 561 and a second irregular region 562). The first electrode pattern 61, the third electrode pattern 63, and the fifth electrode pattern 65 are respectively adjacent to a third sub-region 5613 and extend into the third sub-region 5613. Additionally, the first electrode pattern 61 and the third electrode pattern 63 may also respectively extend into the second irregular region 562.

[0098] Again, for example, as Figure 9 shown, the plurality of electrode patterns may further include: an incomplete second electrode pattern 62, a fourth electrode pattern 64, and a sixth electrode pattern 66 adjacent to an irregular region (e.g., at least one of a first irregular region 561 and a second irregular region 562). The second electrode pattern 62 and the fourth electrode pattern 64 may respectively extend into the second irregular region 562. The sixth electrode pattern 66 is adjacent to a fourth sub-region 5614 and extends into the fourth sub-region 5614.

[0099] In some embodiments, a part of the touch electrode layer extending into the irregular region may include a third part corresponding to the second irregular region 562 and extending into at least one of the third sub-region 5613 or the fourth sub-region 5614.

[0100] For example, a third part 613 of the first electrode pattern 61 extends into the third sub-region 5613, and a third part 633 of the third electrode pattern 63 also extends into the third sub-region 5613. Thus, in addition to having a second part 612 extending into the second irregular region, the first electrode pattern 61 also has a third part 613 extending into the third sub-region 5613, and in addition to having a second part 632 extending into the second irregular region, the third electrode pattern 63 also has a third part 633 extending into the third sub-region 5613. This can further expand the area of these electrode patterns, thereby further improving the integrity of these electrode patterns.

[0101] Figure 10 Schematically shows a touch display panel according to an embodiment of the present disclosure in Figure 9 Partial enlarged view at box G in

[0102] In some embodiments, the part with the smallest occupied area in the first wire 502' or the second wire 504' is located at the position of a first included angle 8001 formed by the third sub-region 5613 and the fourth sub-region 5614. For example, asFigure 10 As shown, among the multiple first conductive lines 502', the first conductive line 5025 electrically connected to the fifth electrode pattern 65 is located at the position of the first included angle. This facilitates the extension of the fifth electrode pattern 65 into the first non-display area 561 with as large an area as possible, thereby improving the integrity of the electrode pattern.

[0103] In addition, as Figure 10 shown, the portion of the first conductive line 5025 above the fifth electrode pattern 65 is thinner, and when the first conductive line 5025 extends above the adjacent first electrode pattern 61, its width increases. Another first conductive line 5021 electrically connected to the first electrode pattern 61 is thinner above the first electrode pattern 61.

[0104] In some embodiments, as Figure 10 shown, the ratio of the pitch L1 between adjacent first conductive lines in the third sub-region among the multiple first conductive lines to the width L2 of the portion where the touch electrode layer (for example, at least one of the first electrode pattern 61, the third electrode pattern 63, and the fifth electrode pattern 65) extends into the third sub-region is 0.03 to 0.17. This ratio can make the best use of the boundary space of the touch display panel, fully expand the effective touch area, and improve the touch performance of the second irregular region and the boundary.

[0105] In some embodiments, the amplitude of the fifth electrode pattern 65 extending into the third sub-region 5613 is greater than the amplitude of the first electrode pattern 61 extending into the third sub-region 5613; the amplitude of the first electrode pattern 61 extending into the third sub-region 5613 is greater than the amplitude of the third electrode pattern 63 extending into the third sub-region 5613. For example, the fifth electrode pattern 65 extends into the third sub-region 5613 by 300 micrometers to 380 micrometers (for example, 354 micrometers), the first electrode pattern 61 extends into the third sub-region 5613 by 200 micrometers to 250 micrometers (for example, 231 micrometers), and the third electrode pattern 63 extends into the third sub-region 5613 by 100 micrometers to 180 micrometers (for example, 147 micrometers).

[0106] In some embodiments, the pitch L1 between adjacent first conductive lines in the third sub-region is 12 micrometers to 24 micrometers.

[0107] According to some embodiments of the present disclosure, there is provided a touch display device. The touch display device may include the touch display panel as described above. For example, the touch display device may be: a mobile phone, a tablet computer, a touch screen, or a navigator, etc., which have touch and display functions.

[0108] Figure 11 is a flowchart schematically showing a manufacturing method of a touch display panel according to an embodiment of the present disclosure. As Figure 11As shown, the manufacturing method may include steps S1110 to S1120.

[0109] In step S1110, a display substrate is provided. The display substrate includes a display area and a non-display area adjacent to the display area. The non-display area includes a shaped area.

[0110] In step S1120, a touch electrode layer is formed on the display substrate. The touch electrode layer is located in the display area. The touch electrode layer includes a plurality of first electrodes and a plurality of second electrodes arranged in an array. The plurality of first electrodes are insulated from the plurality of second electrodes. The above-mentioned shaped area is an area where at least one of the plurality of first electrodes or at least one of the plurality of second electrodes is incomplete. A part of the touch electrode layer extends into the shaped area. The orthographic projection of this part of the touch electrode layer on the display substrate overlaps with a part of the orthographic projection of the shaped area on the display substrate.

[0111] So far, a manufacturing method of a touch display panel according to some embodiments of the present disclosure has been provided. In this manufacturing method, by making a part of the touch electrode layer extend into the shaped area, the area of the incomplete electrode pattern can be increased, the integrity of the incomplete electrode pattern can be improved, and thus the touch performance of the touch display panel near the shaped area can be improved.

[0112] So far, the embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0113] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for the purpose of illustration and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A touch display panel, comprising: A display substrate, including a display area and a non-display area adjacent to the display area, the non-display area including a special-shaped area; And A touch electrode layer on the display substrate and located in the display area, the touch electrode layer including a plurality of first electrodes and a plurality of second electrodes arranged in an array, the plurality of first electrodes being insulated from the plurality of second electrodes, wherein the special-shaped area is an area where at least one of the plurality of first electrodes or at least one of the plurality of second electrodes is incomplete, and a part of the touch electrode layer projects orthogonally onto the display substrate and overlaps with a part of the special-shaped area projected orthogonally onto the display substrate; Wherein, the display substrate includes: A substrate; A device structure layer on one side of the substrate, the device structure layer including a plurality of transistors; A planarization layer on the side of the device structure layer away from the substrate; A plurality of third electrodes on the side of the planarization layer away from the device structure layer, the plurality of third electrodes being located in the display area, and the plurality of third electrodes being electrically connected to different transistors among the plurality of transistors respectively; A pixel defining layer on the side of the planarization layer away from the device structure layer, the pixel defining layer having a plurality of openings, the pixel defining layer being located in the display area and at least a part of the special-shaped area, wherein the openings of the pixel defining layer in the display area expose at least a part of the third electrodes, and the openings of the pixel defining layer in at least a part of the special-shaped area expose a part of the planarization layer and do not expose the third electrodes.

2. The touch display panel according to claim 1, wherein, The non-display area includes a first non-display area on at least one side of the display area, and the special-shaped area includes a first special-shaped area located in the first non-display area; Wherein, the part of the touch electrode layer includes a first part extending into the first special-shaped area, and the orthogonal projection of the first part on the display substrate overlaps with the orthogonal projection of a part of the first special-shaped area on the display substrate.

3. The touch display panel according to claim 1, wherein, The non-display area includes a second non-display area inside the display area, and the special-shaped area includes a second special-shaped area located in the second non-display area; Wherein, the part of the touch electrode layer further includes a second part extending into the second special-shaped area, and the orthogonal projection of the second part on the display substrate overlaps with the orthogonal projection of a part of the second special-shaped area on the display substrate.

4. The touch display panel according to claim 2, wherein, The first special-shaped area is located at the arc-shaped apex position of the display substrate.

5. The touch display panel according to claim 3, wherein, The second special-shaped area includes a through hole penetrating the display substrate or a blind hole not penetrating the display substrate.

6. The touch display panel according to any one of claims 1 to 3, wherein, The display substrate further includes: A functional layer in each of the plurality of openings of the pixel defining layer; A fourth electrode on a side of the functional layer away from the substrate; and An encapsulation layer on a side of the fourth electrode away from the functional layer; Wherein, the touch electrode layer is located on a side of the encapsulation layer away from the substrate.

7. The touch display panel according to claim 6, wherein, Each first electrode includes a first electrode line, and a positive projection of the first electrode line on the substrate is located between positive projections of different openings of the pixel defining layer on the substrate; And Each second electrode includes a second electrode line, and a positive projection of the second electrode line on the substrate is located between positive projections of different openings of the pixel defining layer on the substrate.

8. The touch display panel according to claim 7, wherein, The part of the touch electrode layer includes at least one of a part of the first electrode line extending into the special-shaped area and a part of the second electrode line extending into the special-shaped area.

9. The touch display panel according to claim 2, wherein, The plurality of first electrodes include multiple columns of first electrodes arranged along a first direction, and adjacent first electrodes in each column of first electrodes are electrically connected; and The plurality of second electrodes include multiple rows of second electrodes arranged along a second direction, and adjacent second electrodes in each row of second electrodes are electrically connected; Wherein, the first direction intersects with the second direction.

10. The touch display panel according to claim 9, wherein, The non-display area includes a second non-display area inside the display area, and the special-shaped area includes a second special-shaped area located in the second non-display area; The first non-display area includes a first sub-area on one side of the display area, a second sub-area on a side of the display area adjacent to the first sub-area, a third sub-area on a side of the display area opposite to the first sub-area, and a fourth sub-area on a side of the display area opposite to the second sub-area, Wherein, the third sub-area and the fourth sub-area form a first included angle, the first sub-area and the second sub-area form a second included angle, and a distance between the second special-shaped area and the first included angle is less than a distance between the second special-shaped area and the second included angle.

11. The touch display panel according to claim 10, further comprising: A plurality of first wires electrically connected to the multiple columns of first electrodes one by one, at least located in the second sub-area and the third sub-area, wherein, among the plurality of first wires, the first wire corresponding to the column of first electrodes closest to the second sub-area is closest to the display area; and A plurality of second wires electrically connected to the multiple rows of second electrodes one by one, at least located in the fourth sub-area, wherein, among the plurality of second wires, the second wire corresponding to the row of second electrodes closest to the first sub-area is closest to the display area.

12. The touch display panel according to claim 11, wherein, The part with the smallest occupied area in the first wire or the second wire is located at the position of the first included angle.

13. The touch display panel according to claim 11, wherein, The multiple first electrodes and the multiple second electrodes form multiple electrode patterns, and the multiple electrode patterns include: an incomplete first electrode pattern adjacent to the shaped region, a third electrode pattern, and a fifth electrode pattern. The first electrode pattern, the third electrode pattern, and the fifth electrode pattern are respectively adjacent to the third sub-region and extend into the third sub-region. Wherein, the first electrode pattern extends into the third sub-region by 200 micrometers to 250 micrometers, the third electrode pattern extends into the third sub-region by 100 micrometers to 180 micrometers, and the fifth electrode pattern extends into the first non-display region by 300 micrometers to 380 micrometers.

14. The touch display panel according to claim 13, wherein The ratio of the pitch between adjacent first wires in the third sub-region among the multiple first wires to the width of at least a part of the first electrode pattern, the third electrode pattern, and the fifth electrode pattern that extends into the third sub-region is 0.03 to 0.

17.

15. A touch display device, comprising: The touch display panel according to any one of claims 1 to 14.

16. A manufacturing method of a touch display panel, comprising: Providing a display substrate, the display substrate including a display region and a non-display region adjacent to the display region, and the non-display region including a shaped region; And Forming a touch electrode layer on the display substrate, the touch electrode layer being located in the display region, the touch electrode layer including a plurality of first electrodes and a plurality of second electrodes arranged in an array, the plurality of first electrodes being insulated from the plurality of second electrodes. Wherein, the shaped region is a region where at least one of the plurality of first electrodes or at least one of the plurality of second electrodes is incomplete, and a positive projection of a part of the touch electrode layer on the display substrate overlaps a positive projection of a part of the shaped region on the display substrate; Wherein, the display substrate includes: A substrate substrate; A device structure layer on one side of the substrate substrate, the device structure layer including a plurality of transistors; A planarization layer on a side of the device structure layer away from the substrate substrate; A plurality of third electrodes on a side of the planarization layer away from the device structure layer, the plurality of third electrodes being located in the display region, and the plurality of third electrodes being respectively electrically connected to different transistors among the plurality of transistors; A pixel defining layer on a side of the planarization layer away from the device structure layer, the pixel defining layer having a plurality of openings, the pixel defining layer being located in the display region and at least a part of the shaped region. Wherein, the openings of the pixel defining layer in the display region expose at least a part of the third electrodes, and the openings of the pixel defining layer in at least a part of the shaped region expose a part of the planarization layer and do not expose the third electrodes.

Images