Touch display panel and manufacturing method thereof

Abstract

The present invention provides a touch display panel and a manufacturing method thereof. The touch display panel comprises a substrate; a display area, arranged on the substrate; a first touch electrode, arranged on the display area; a second touch electrode, arranged on the display area; a third touch electrode, arranged on the display area, wherein the first touch electrode, the second touch electrode and the third touch electrode are arranged adjacent to each other, and the third touch electrode is electrically disconnected from the second touch electrode; wherein the second touch electrode is electrically connected to the first touch electrode, and the area of ​​the third touch electrode is larger than the area of ​​the first touch electrode and / or the area of ​​the second touch electrode.

Description

Technical Field

[0001] The present invention relates to a touch display panel and a manufacturing method thereof, and in particular to a touch display panel and a manufacturing method thereof capable of improving display quality and avoiding touch abnormality. Background Art

[0002] With the development of technology, display devices are widely used in many electronic products, such as mobile phones, tablet computers, watches, cars, etc.

[0003] For the same series of display devices, their size and resolution are the same, and the only difference is often the size of the opening (bangs), such as IPHONE12 and IPHONE13. When manufacturing the same series of display devices with different openings, different mask templates need to be developed accordingly, which increases costs. If some mask templates are shared, such as the mask templates that form touch electrodes, in display devices with smaller openings, larger touch electrodes will be produced on both sides of the openings. The area of ​​this touch electrode exceeds the maximum design area and cannot be effectively controlled, causing the touch display panel to have touch abnormalities and insufficient charging of the electrode here during high-frequency operation. In addition, some touch display panels also have problems with potential offset due to differences in the area of ​​the touch electrodes, resulting in differences in brightness and darkness in the displayed screen.

[0004] Therefore, how to provide a touch display panel and a manufacturing method thereof that can improve display quality and avoid touch abnormalities is one of the problems that need to be solved. Summary of the invention

[0005] The embodiments of the present invention provide a touch display panel and a manufacturing method thereof, which can improve display quality and avoid the occurrence of abnormal touch problems.

[0006] A touch display panel according to one embodiment of the present invention comprises a substrate; a display area arranged on the substrate; a first touch electrode arranged in the display area; a second touch electrode arranged in the display area; and a third touch electrode arranged in the display area, wherein the first touch electrode, the second touch electrode and the third touch electrode are arranged adjacent to each other, and the third touch electrode is electrically disconnected from the second touch electrode; wherein the second touch electrode is electrically connected to the first touch electrode, and the area of ​​the third touch electrode is larger than the area of ​​the first touch electrode and / or the area of ​​the second touch electrode.

[0007] In the above touch display panel, the first touch electrode has a first area S1, the second touch electrode has a second area S2, Smin≤(S1+S2)≤Smax; wherein Smin is the minimum design area of ​​the touch electrode, and Smax is the maximum design area of ​​the touch electrode.

[0008] In the above touch display panel, the second touch electrode further includes a plurality of electrode units, and the plurality of electrode units are electrically connected to the first touch electrode respectively.

[0009] In the above touch display panel, the first area S1 is smaller than Smin, or the second area S2 is smaller than Smin.

[0010] In the above touch display panel, the third touch electrode has a third area S3, Smin≤S3≤Smax.

[0011] In the above touch display panel, the display area includes a regular-shaped area and an irregular-shaped area, and the first touch electrode, the second touch electrode and the third touch electrode are located in the irregular-shaped area.

[0012] In the above touch display panel, the irregular shape area is located at a corner of the display area; or the touch display panel further includes an opening area, and the irregular shape area is adjacent to the opening area.

[0013] In the above touch display panel, the overall shape formed by the first touch electrodes, the second touch electrodes and the third touch electrodes is an irregular shape.

[0014] In the above touch display panel, at least one of the first touch electrode, the second touch electrode and the third touch electrode has an irregular shape.

[0015] The above-mentioned touch display panel, wherein the display panel further includes: a first touch electrode line and a second touch electrode line, which are arranged on the substrate; a first insulating layer, which is arranged on the substrate and covers the first touch electrode line and the second touch electrode line, and the first touch electrode, the second touch electrode and the third touch electrode are arranged on the first insulating layer, the first touch electrode is electrically connected to the first touch electrode line, and the third touch electrode is electrically connected to the second touch electrode line.

[0016] The above-mentioned touch display panel, wherein the display panel further includes: a second insulating layer, arranged on the second touch electrode; a pixel electrode layer, arranged on the second insulating layer; wherein corresponding to the second touch electrode, the first insulating layer and the second insulating layer are provided with a first opening, the first opening exposes a portion of the first touch electrode line, and the pixel electrode layer extends to the first opening and is electrically connected to the first touch electrode line.

[0017] The above touch display panel, wherein, corresponding to the second touch electrode, the second insulating layer is provided with a second opening, the second opening exposes a portion of the second touch electrode, and the pixel electrode layer extends to the second opening and is electrically connected to the second touch electrode.

[0018] The above-mentioned touch display panel, wherein the display panel further includes: a second insulating layer, arranged on the second touch electrode; a pixel electrode layer, arranged on the second insulating layer; wherein corresponding to the first touch electrode and the second touch electrode, the second insulating layer is provided with an opening, the opening exposing part of the first touch electrode and part of the second touch electrode, and the pixel electrode layer extends to the opening and is electrically connected to the first touch electrode and the second touch electrode.

[0019] In the above touch display panel, the third touch electrode is a single electrode unit; or the third touch electrode includes a plurality of electrode units electrically connected to each other.

[0020] A method for manufacturing a display panel in one embodiment of the present invention includes: providing a substrate, the substrate having a display area; forming a first touch electrode, a second touch electrode and a third touch electrode in the display area, the first touch electrode, the second touch electrode and the third touch electrode being arranged adjacent to each other; wherein the third touch electrode is electrically disconnected from the second touch electrode, the first touch electrode is electrically connected to the second touch electrode, and the area of ​​the third touch electrode is larger than that of the second touch electrode.

[0021] The above method, wherein the method further comprises: the second touch electrode comprises a plurality of electrode units, and the plurality of electrode units are respectively electrically connected to the first touch electrode.

[0022] In the above method, the first touch electrode has a first area S1, the second touch electrode has a second area S2, Smin≤(S1+S2)≤Smax; wherein Smin is the minimum design area of ​​the touch electrode, and Smax is the maximum design area of ​​the touch electrode.

[0023] In the above method, the first area S1 is smaller than Smin, or the second area S2 is smaller than Smin.

[0024] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention.

[0026] Figure 2 FIG. 1 is an enlarged schematic diagram of a partial area Q2 in a touch display panel according to an embodiment of the present invention.

[0027] Figure 3 FIG. 1 is a schematic diagram of a connection structure of touch electrodes according to an embodiment of the present invention.

[0028] Wherein, the reference numerals are:

[0029] 100: Touch display panel

[0030] 101: Substrate

[0031] 102: First touch electrode

[0032] 103: Second touch electrode

[0033] 104: Third touch electrode

[0034] 105: Opening area

[0035] 106: First touch electrode line

[0036] 107: First insulation layer

[0037] 108: Second insulation layer

[0038] 109: Pixel electrode layer

[0039] 110: First Opening

[0040] 111: Second opening

[0041] AA: Display Area

[0042] BA: Surrounding area

[0043] Q1: Regular shape area

[0044] Q2: Irregular shape area DETAILED DESCRIPTION

[0045] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0046] Figure 1 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention, Figure 2 is an enlarged schematic diagram of a partial area Q2 in a touch display panel according to an embodiment of the present invention, Figure 3 FIG. 1 is a schematic diagram of a connection structure of touch electrodes according to an embodiment of the present invention.

[0047] like Figure 1-Figure 3As shown, the touch display panel 100 of the present invention includes a substrate 101, and the substrate 101 has a display area AA and a peripheral area BA, and the peripheral area BA surrounds the display area AA. Further, the display area AA includes a regular shape area Q1 and an irregular shape area Q2. As shown in the figure of the present invention, only the irregular shape area Q2 is located near the opening area 105 as an example for explanation. The irregular shape area Q2 can also be located at the corner of the display area AA, or for a non-regular shape display area, the irregular shape area Q2 can also be located at other positions of the display area AA, and the present invention is not limited to this.

[0048] In this embodiment, the first touch electrode 102, the second touch electrode 103 and the third touch electrode 104 are located in the irregular shape area Q2. The first touch electrode 102, the second touch electrode 103 and the third touch electrode 104 are arranged adjacent to each other. Figure 1 and Figure 2 The first direction D1 shown in FIG. 1 is adjacent to each other, and the Figure 1 and Figure 2 The first direction D1 and the second direction D2 are arranged adjacent to each other, and the first direction D1 intersects with the second direction D2; or Figure 1 As shown in the figure, the first touch electrode 102, the second touch electrode 103 and the third touch electrode 104 are arranged adjacently in an oblique direction, but the present invention is not limited thereto. In this embodiment, the first direction D1 is perpendicular to the second direction D2, the first direction D1 is a horizontal direction, and the second direction D2 is a vertical direction. In another embodiment, the first touch electrode 102, the second touch electrode 103 and the third touch electrode 104 can also be located on the regular shape area Q1, but the invention is not limited thereto.

[0049] A plurality of first-type touch electrodes (not shown) having a regular shape and arranged in an array may be provided in the regular shape area Q1. A control element 200 is provided in the peripheral area BA of the touch display panel 100, and a plurality of touch electrode lines (not shown) are further provided in the display area AA of the touch display panel 100. One end of the plurality of touch electrode lines is connected to the control element 200, and the other end of the plurality of touch electrode lines is correspondingly connected to the aforementioned plurality of first-type touch electrodes and the first touch electrode 102, the second touch electrode 103, and the third touch electrode 104. In this way, the control element 200 can be electrically connected to each touch electrode via each touch electrode line. The control element 200 is a driver chip (IC) or a chip on film (COF).

[0050] In one embodiment, a touch electrode layer can be formed in the same process, and the touch electrode layer can be reused as a common electrode layer. The touch electrode layer can include the aforementioned plurality of first-type touch electrodes and the first touch electrode 102, the second touch electrode 103, and the third touch electrode 104. In the display stage, the touch electrode layer can be used as a common electrode layer, and the control element 200 transmits the corresponding common potential signal to the corresponding touch electrode via each touch electrode line; in the touch sensing stage, the control element 200 can transmit the corresponding touch signal to the corresponding touch electrode and / or receive the sensing signal of the corresponding touch electrode via each touch electrode line.

[0051] For the touch display panel 100, each touch electrode in the touch display panel 100 has an area and needs to meet certain design rules, that is, the area of ​​each touch electrode is greater than or equal to the minimum design area Smin and less than or equal to the maximum design area Smax. In this way, for the touch display panel 100, especially for the touch display panel 100 working at high frequency, it can be ensured that during the display stage, each touch electrode can be charged in time and restored to the common potential to ensure the display quality, and it can also be ensured that during the touch sensing stage, each touch electrode can accurately perform touch sensing. If the area of ​​the touch electrode is less than the minimum design area Smin or greater than the maximum design area Smax, the problems of touch abnormality in the prior art, insufficient charging of the electrode here during high-frequency operation, or brightness difference of the display screen may occur.

[0052] In the present invention, among the adjacently arranged first touch electrode 102, second touch electrode 103 and third touch electrode 104, the second touch electrode 103 is electrically connected to the first touch electrode 102, and the second touch electrode 103 and the third touch electrode 104 are electrically disconnected, so that the first touch electrode 102 and the second touch electrode 103 together form a combined touch electrode. As a part of the combined touch electrode, the area of ​​the first touch electrode 102 and / or the second touch electrode 103 is smaller than the area of ​​the third touch electrode 104, that is, the area of ​​at least one of the first touch electrode 102 and the second touch electrode 103 is smaller than the area of ​​the third touch electrode 104.

[0053] The touch display panel 100 of the present invention selectively electrically connects and disconnects the adjacently arranged first touch electrodes 102, second touch electrodes 103 and third touch electrodes 104 according to actual needs to form a combined touch electrode, and each of the formed touch electrodes can meet the design rules, ensure display quality, and avoid touch abnormalities.

[0054] like Figure 2As shown, in this embodiment, the third touch electrode 104 is another single electrode unit independent of the combined touch electrode formed by the first touch electrode 102 and the second touch electrode 103. In another embodiment, the third touch electrode 104 may also be a combined touch electrode formed by electrically connecting at least two small electrode units, but the present invention is not limited thereto.

[0055] In the present invention, the first touch electrode 102 has a first area S1, the second touch electrode 103 has a second area S2, and the third touch electrode 104 has a third area S3. The first touch electrode 102 and the second touch electrode 103 are electrically connected to form a combined touch electrode. The area of ​​the combined touch electrode is between the minimum design area Smin and the maximum design area Smax and meets the design rule. The first area S1 and the second area S2 are both smaller than the maximum design area Smax. The third touch electrode 104 is another touch electrode, and the third area S3 also meets the design rule, that is, Smin≤S3≤Smax. In one embodiment, as a part of the combined touch electrode, one of the first area S1 and the second area S2 is smaller than the minimum design area Smin, that is, the first area S1 or the second area S2 is smaller than the minimum design area Smin; in another embodiment, the first area S1 and the second area S2 are both smaller than the minimum design area Smin. At this time, the first area S1 of the first touch electrode 102 and / or the second area S2 of the second touch electrode 103 is smaller than the third area S3 of the third touch electrode 104 .

[0056] In one embodiment, taking the first touch electrode 102 adjacent to the opening area 105 as an example (other embodiments are not limited thereto), after dividing the first touch electrode 102 and the remaining touch electrode layer between it and the opening area 105 as a whole touch electrode, the area of ​​the whole touch electrode is greater than the maximum design area Smax, and the whole touch electrode needs to be split. Regarding the splitting idea, priority can be given to the splitting of the whole touch electrode itself. Specifically, the whole touch electrode is split into a number of electrically disconnected sub-touch electrodes, and the area of ​​each sub-touch electrode meets the design rules. If it is not possible to make the area of ​​each sub-touch electrode after the whole touch electrode is divided meet the design rules, the first touch electrode 102 located next to the whole touch electrode (or even other touch electrodes next to the first touch electrode 102) can be combined for comprehensive consideration.

[0057] Taking the first touch electrode 102 located next to the whole touch electrode as an example, the specific idea is: (1) confirm the difference between the first area S1 of the first touch electrode 102 and the maximum design area Smax; (2) make the remaining sub-touch electrodes other than the sub-touch electrode (defined as the second touch electrode) adjacent to the first touch electrode 102 in the whole touch electrode meet the design rules (the area of ​​each sub-touch electrode does not have to be equal, as long as it can meet the design rules), and ensure that the area of ​​the second touch electrode is smaller than the above difference; (3) electrically connect the second touch electrode adjacent to the first touch electrode 102 to the first touch electrode 102 to form a combined touch electrode. It should be noted that the remaining sub-touch electrodes themselves can be single touch electrodes or combined touch electrodes.

[0058] In another embodiment, when the area of ​​the second touch electrode is smaller than the difference between the first area S1 of the first touch electrode 102 and the maximum design area Smax in the aforementioned item (2) cannot be satisfied only by dividing the entire touch electrode between the first touch electrode 102 and the opening area 105, the other touch electrodes adjacent to the other side of the first touch electrode 102 may be further comprehensively considered, and the areas of the first touch electrode 102 and the other adjacent touch electrodes may be adjusted so that the area of ​​the second touch electrode is smaller than the difference between the first area S1 of the first touch electrode 102 and the maximum design area Smax in the aforementioned item (2) can be satisfied.

[0059] Figure 1 and Figure 2 In the illustrated embodiment, after the first touch electrode 102 is divided and determined, if the remaining touch electrode layer (in this case, the whole formed by the second touch electrode 103 and the third touch electrode 104) between the first touch electrode 102 and the opening area 105 is taken as a whole touch electrode, and the area of ​​the whole touch electrode is greater than the maximum design area Smax, the whole touch electrode is split. After the split, if it is found that the area of ​​each sub-touch electrode cannot meet the design rule, then (1) confirm the difference between the first area S1 of the first touch electrode 102 and the maximum design area Smax; (2) make the third area S3 of the third touch electrode 104 outside the second touch electrode 103 adjacent to the first touch electrode 102 meet the design rule, and ensure that the second area S2 of the second touch electrode 103 is not greater than the aforementioned difference; (3) the second touch electrode 103 is electrically connected to the first touch electrode 102 to form a combined touch electrode.

[0060] In one embodiment, when the area of ​​a divided touch electrode is smaller than the minimum design area Smin, a combined touch electrode can be formed by cutting a portion of the touch electrode layer adjacent to it and electrically connecting them, so that the area of ​​the combined touch electrode meets the design rule. For example, when the first area S1 of the divided first touch electrode 102 is smaller than Smin, a portion of the touch electrode layer adjacent to it (such as the second touch electrode 103) can be cut and the first touch electrode 102 and the second touch electrode 103 can be electrically connected, so that the sum of the first area S1 of the combined first touch electrode 102 and the second area S2 of the second touch electrode 103 meets the design rule, that is, Smin≤(S1+S2)≤Smax.

[0061] In the present invention, when the area of ​​the divided touch electrode is larger than the maximum design area Smax or smaller than the minimum design area Smin, other touch electrodes adjacent to it can be comprehensively considered to perform electrical connection, electrical disconnection, etc. to form a combined touch electrode, and each of the split touch electrodes meets the design rules to ensure display quality and avoid touch abnormalities.

[0062] like Figure 2 In the illustrated embodiment, the second touch electrode 103 is a single touch electrode. In another embodiment, the second touch electrode 103 may be further divided into a plurality of electrode units (not shown in the figure), and two adjacent electrode units are electrically disconnected. The first touch electrode 102 is electrically connected to a plurality of electrode units, and the specific number and shape of the electrode units may be determined according to the shape and area of ​​the first touch electrode 102, and the present invention is not limited thereto.

[0063] In this embodiment, the first touch electrode 102, the second touch electrode 103 and the third touch electrode 104, or the plurality of electrode units constituting the second touch electrode 103, may each form an irregular shape, and the first touch electrode 102, the second touch electrode 103 and the third touch electrode 104 as a whole may also form an irregular shape. Figure 2 The shape shown is taken as an example for explanation. Of course, other shapes can also be designed. For example, at least one of the shapes formed by the first touch electrode 102, the second touch electrode 103 and the third touch electrode 104 is a regular shape or an irregular shape, and the shape formed by the first electrode 102, the second touch electrode 103 and the third touch electrode 104 as a whole is a regular shape or an irregular shape, etc. The present invention is not limited to this.

[0064] Combination Figures 1 to 3As shown, in the touch display panel 100 , a first touch electrode line 106 and a second touch electrode line 116 are disposed on a substrate 101 , and the first touch electrode line 106 and the second touch electrode line 116 may be formed of, for example, a second metal layer ( M2 ) or a third metal layer ( M3 ).

[0065] A first insulating layer 107 is further disposed on the substrate 101, and the first insulating layer 107 covers the first touch electrode line 106 and the second touch electrode line 116. The first touch electrode 102, the second touch electrode 103 and the third touch electrode 104 are disposed on the first insulating layer 107. The first touch electrode 102 is electrically connected to the first touch electrode line 106, and the first touch electrode line 106 transmits a corresponding touch signal to a combined touch electrode formed by the first touch electrode 102 and the second touch electrode 103 and / or receives a sensing signal from the combined touch electrode formed by the first touch electrode 102 and the second touch electrode 103. The third touch electrode 104 is electrically connected to the second touch electrode line 116, and the second touch electrode line 116 transmits a corresponding touch signal to the third touch electrode 104 and / or receives a sensing signal from the third touch electrode 104.

[0066] Furthermore, the touch display panel 100 further includes a second insulating layer 108 and a pixel electrode layer 109. The second insulating layer 108 covers the touch electrode layer (including the first touch electrode 102, the second touch electrode 103, and the third touch electrode 104). The pixel electrode layer 109 is disposed on the second insulating layer 108. In the present invention, the touch electrode layer where the first touch electrode 102, the second touch electrode 103, and the third touch electrode 104 are located may be, for example, a first transparent conductive layer (ITO1), and the pixel electrode layer 109 may be, for example, a second transparent conductive layer (ITO2), but the present invention is not limited thereto.

[0067] like Figure 3 As shown, for the second touch electrode 103, a first opening 110 is provided in the first insulating layer 107 and the second insulating layer 108, the first opening 110 exposes a portion of the first touch electrode line 106, and the pixel electrode layer 109 extends to the first opening 110 and is electrically connected to the first touch electrode line 106. A second opening 111 is provided in the second insulating layer 108, the second opening 111 exposes a portion of the second touch electrode 103, and the pixel electrode layer 109 extends to the second opening 111 and is electrically connected to the second touch electrode 103. Thus, the second touch electrode 103 can be electrically connected to the first touch electrode 102, so that the sum of the areas of the first touch electrode 102 and the second touch electrode 103 meets the design rule.

[0068] In one embodiment, the first touch electrode 102 and the second touch electrode 103 are both electrically connected to the first touch electrode line 106, that is, the first touch electrode 102 and the second touch electrode 103 are electrically connected to the first touch electrode line 106, so that the first touch electrode 102 and the second touch electrode 103 form a combined touch electrode. In another embodiment, the second touch electrode 103 is not connected to the first touch electrode line 106, but is electrically connected to the first touch electrode 103 through other layers to form a combined touch electrode. For example, corresponding to the first touch electrode 102 and the second touch electrode 103, the second insulating layer 108 is provided with an opening, the opening exposes a portion of the first touch electrode 102 and a portion of the second touch electrode 103, and the corresponding portion of the pixel electrode layer extends to the opening and is electrically connected to the first touch electrode 102 and the second touch electrode 103.

[0069] The second touch electrode 103 having a plurality of electrode units may be electrically connected to the first touch electrode 102 by adopting the same method as above, which will not be described in detail herein.

[0070] The present invention also provides a method for manufacturing a touch display panel, Figure 1-Figure 3 As shown, the manufacturing method of the present invention comprises the following steps:

[0071] S1. Provide a substrate 101, wherein the substrate 101 has a display area AA.

[0072] The display area AA includes a regular shape area Q1 and an irregular shape area Q2. As shown in the figure of the present invention, only the irregular shape area Q2 adjacent to the opening area 105 is used as an example for explanation, and the irregular shape area Q2 can also be located at the corner of the display area AA, or for a non-regular shape display area, the irregular shape area Q2 can also be located at other positions of the display area AA, and the present invention is not limited thereto.

[0073] A first touch electrode line 106 and a second touch electrode line 116 are formed on the substrate 101 . The first touch electrode line 106 and the second touch electrode line 116 may be formed of, for example, a second metal layer ( M2 ) or a third metal layer ( M3 ).

[0074] A first insulating layer 107 is formed on the substrate 101 , and the first insulating layer 107 covers the first touch electrode lines 106 and the second touch electrode lines 116 .

[0075] S2, forming a first touch electrode 102, a second touch electrode 103 and a third touch electrode 104 on the first insulating layer 107, the first touch electrode 102, the second touch electrode 103 and the third touch electrode 104 are arranged adjacent to each other, and can be arranged adjacent to each other in the horizontal direction shown in the figure, can also be arranged adjacent to each other in the vertical direction shown in the figure, or can be arranged adjacent to each other in the oblique direction shown in the figure, and the first touch electrode 102, the second touch electrode 103 and the third touch electrode 104 can be, for example, the first transparent conductive layer (ITO1). The present invention is not limited thereto.

[0076] Next, a second insulating layer 108 is formed to cover the first touch electrode 102 , the second touch electrode 103 and the third touch electrode 104 , and then a pixel electrode layer 109 is formed on the second insulating layer 108 . The pixel electrode layer 109 may be, for example, a second transparent conductive layer (ITO2), but the present invention is not limited thereto.

[0077] The first touch electrodes 102 are electrically connected to the first touch electrode lines 106 , and the third touch electrodes 104 are electrically connected to the second touch electrode lines 116 .

[0078] For the second touch electrodes 103 , in order to realize the electrical connection between the first touch electrodes 102 and the second touch electrodes 103 , the manufacturing method of the present invention further includes:

[0079] A first opening 110 is formed in the first insulating layer 107 and the second insulating layer 108 . The first opening 110 exposes a portion of the first touch electrode line 106 . The pixel electrode layer 109 extends to the first opening 110 and is electrically connected to the first touch electrode line 106 .

[0080] A second opening 111 is formed in the second insulating layer 108, the second opening 111 partially exposes the second touch electrode 103, and the pixel electrode layer 109 extends to the second opening 111 and is electrically connected to the second touch electrode 103. Thus, the second touch electrode 103 and the first touch electrode 102 can be electrically connected together.

[0081] According to an embodiment of the present invention, by cutting or electrically connecting the touch electrodes that do not meet the area design rules in a local area (such as an irregular shape area) of the touch display panel, each touch electrode that is electrically connected together can meet the design rules, thereby improving the display quality and avoiding the occurrence of touch abnormalities.

[0082] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A touch display panel, characterized in that: include: a substrate; a display area, disposed on the substrate; A first touch electrode, disposed in the display area; a second touch electrode, disposed in the display area; a third touch electrode disposed in the display area, wherein the first touch electrode, the second touch electrode and the third touch electrode are arranged adjacent to each other, and the third touch electrode is electrically disconnected from the second touch electrode; The second touch electrode is electrically connected to the first touch electrode, and an area of ​​the third touch electrode is larger than an area of ​​the first touch electrode and / or an area of ​​the second touch electrode; The display area includes a regular-shaped area and an irregular-shaped area, and the first touch electrode, the second touch electrode and the third touch electrode are located in the irregular-shaped area.

2. The touch display panel according to claim 1, wherein: The first touch electrode has a first area S1, the second touch electrode has a second area S2, Smin≤(S1+S2)≤Smax; wherein Smin is the minimum design area of ​​the touch electrode, and Smax is the maximum design area of ​​the touch electrode.

3. The touch display panel according to claim 2, wherein: The second touch control electrode further includes a plurality of electrode units, and the plurality of electrode units are electrically connected to the first touch control electrodes respectively.

4. The touch display panel according to claim 2, wherein: The first area S1 is smaller than Smin, or the second area S2 is smaller than Smin.

5. The touch display panel according to claim 2, wherein: The third touch electrode has a third area S3, Smin≤S3≤Smax.

6. The touch display panel according to claim 1, wherein: The irregular shape area is located at a corner of the display area; or, the touch display panel further includes an opening area, and the irregular shape area is adjacent to the opening area.

7. The touch display panel according to claim 1, wherein: The overall shape formed by the first touch electrode, the second touch electrode and the third touch electrode is an irregular shape.

8. The touch display panel according to claim 7, wherein: At least one of the first touch electrode, the second touch electrode and the third touch electrode has an irregular shape.

9. The touch display panel according to claim 1, wherein: The display panel further comprises: A first touch electrode line and a second touch electrode line are disposed on the substrate; A first insulating layer is arranged on the substrate and covers the first touch electrode line and the second touch electrode line, and the first touch electrode, the second touch electrode and the third touch electrode are arranged on the first insulating layer, the first touch electrode is electrically connected to the first touch electrode line, and the third touch electrode is electrically connected to the second touch electrode line.

10. The touch display panel according to claim 9, wherein: The display panel further comprises: a second insulating layer, disposed on the second touch electrode; a pixel electrode layer, disposed on the second insulating layer; Corresponding to the second touch electrode, the first insulating layer and the second insulating layer are provided with a first opening, the first opening exposes a portion of the first touch electrode line, and the pixel electrode layer extends to the first opening and is electrically connected to the first touch electrode line.

11. The touch display panel according to claim 10, wherein: Corresponding to the second touch electrode, the second insulating layer is provided with a second opening, the second opening exposes a portion of the second touch electrode, and the pixel electrode layer extends to the second opening and is electrically connected to the second touch electrode.

12. The touch display panel according to claim 9, wherein: The display panel further comprises: a second insulating layer, disposed on the second touch electrode; a pixel electrode layer, disposed on the second insulating layer; Corresponding to the first touch electrode and the second touch electrode, the second insulating layer is provided with an opening, the opening exposes part of the first touch electrode and part of the second touch electrode, and the pixel electrode layer extends to the opening and is electrically connected to the first touch electrode and the second touch electrode.

13. The touch display panel according to claim 1, wherein: The third touch electrode is a single electrode unit; or, the third touch electrode includes a plurality of electrode units electrically connected to each other.

14. A method for manufacturing a display panel, characterized in that: include: Providing a substrate, wherein the substrate has a display area; forming a first touch electrode, a second touch electrode and a third touch electrode in the display area, wherein the first touch electrode, the second touch electrode and the third touch electrode are arranged adjacent to each other; The third touch electrode is electrically disconnected from the second touch electrode, the first touch electrode is electrically connected to the second touch electrode, and the area of ​​the third touch electrode is larger than the area of ​​the first touch electrode and / or the area of ​​the second touch electrode; The display area includes a regular-shaped area and an irregular-shaped area, and the first touch electrode, the second touch electrode and the third touch electrode are located in the irregular-shaped area.

15. The method according to claim 14, characterized in that The method further comprises: The second touch control electrode includes a plurality of electrode units, and the plurality of electrode units are electrically connected to the first touch control electrodes respectively.

16. The method according to claim 14, characterized in that The first touch electrode has a first area S1, the second touch electrode has a second area S2, Smin≤(S1+S2)≤Smax; wherein Smin is the minimum design area of ​​the touch electrode, and Smax is the maximum design area of ​​the touch electrode.

17. The method according to claim 16, characterized in that The first area S1 is smaller than Smin, or the second area S2 is smaller than Smin.

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