Display panel, method for manufacturing the same, and electronic device

Abstract

The present application provides a display panel, a preparation method thereof, and an electronic device. The display panel includes a substrate, a scanning line, a common electrode, and a shielding electrode. The scanning line is disposed on one side of the substrate. The common electrode is disposed on the side of the scanning line away from the substrate. The common electrode includes a plurality of common electrode portions arranged at intervals along a direction perpendicular to the arrangement direction of the substrate and the scanning line. The scanning line is disposed corresponding to the gap between two adjacent common electrode portions. The shielding electrode is disposed on the side of the common electrode away from the substrate. The orthographic projection of the shielding electrode on the substrate covers at least a part of the orthographic projection of the scanning line on the substrate. The shielding electrode is used to introduce a shielding electrical signal and is also used to shield the electrical signal from the scanning line. By adopting the shielding electrode for introducing the shielding electrical signal corresponding to the scanning line, the present application can avoid the external leakage of at least part of the scanning line electrical signal, reduce the line width of the light-shielding layer, and improve the aperture ratio of the display panel.

Description

Technical Field

[0001] The present application belongs to the technical field of display panels, and specifically relates to display panels and methods for preparing the same, and electronic devices. Background Art

[0002] To reduce costs, display panels mostly use dual gate or triple gate architecture to reduce the number of driver ICs. Incell TDDI display panels use driver ICs with higher costs, and display panels using triple gate can minimize IC costs. However, in triple gate incell technology, since the common electrode at the touch sensing partition between two pixel units needs to be disconnected, the electrical signal of the high-voltage scan line (gate) leaks out, causing abnormal display above the gate wiring, which requires a wider shading layer line width to block, resulting in a reduced aperture ratio of the display panel. Summary of the invention

[0003] In view of this, a first aspect of the present application provides a display panel, the display panel comprising:

[0004] substrate;

[0005] A scanning line is provided on one side of the substrate;

[0006] a common electrode disposed on a side of the scan line away from the substrate, the common electrode comprising a plurality of common electrode portions spaced apart in a direction perpendicular to the substrate and the arrangement direction of the scan line, the scan line being disposed corresponding to a gap between two adjacent common electrode portions; and

[0007] A shielding electrode is arranged on a side of the common electrode away from the substrate, the orthographic projection of the shielding electrode on the substrate covers at least part of the orthographic projection of the scanning line on the substrate, and the shielding electrode is used to introduce a shielding electrical signal and also to shield the electrical signal from the scanning line.

[0008] The display panel provided in the first aspect of the present application includes a substrate, a scan line, a common electrode, and a shielding electrode. The shielding electrode is arranged corresponding to the scan line and is used to introduce a shielding electrical signal, so that the shielding electrode can shield the electrical signal of the scan line and prevent at least part of the electrical signal of the scan line from leaking out.

[0009] Compared to the display panel in the related art that requires a wider shading layer to block the scanning line, the present application can avoid leakage of at least part of the scanning line electrical signal by adopting a shielding electrode that imports shielding electrical signals corresponding to the scanning line, thereby reducing the line width of the shading layer and improving the aperture ratio of the display panel.

[0010] Wherein, the display panel also includes a touch electrode arranged on the side of the common electrode away from the substrate, and the touch electrode is electrically connected to the common electrode; wherein, when the display panel is in a touch state, the shielding electrical signal is the same as the electrical signal generated by the touch electrode, and when the display panel is in a display state, the shielding electrical signal is the same as the electrical signal generated by the common electrode.

[0011] The display panel further includes a first insulating layer covering the touch electrode, the shielding electrode is disposed on a side of the first insulating layer away from the substrate, and the shielding electrode also penetrates the first insulating layer and is electrically connected to the touch electrode.

[0012] Among them, the display panel also includes a connecting electrode and a second insulating layer covering the common electrode, the touch electrode is arranged on the side of the second insulating layer away from the substrate, the connecting electrode is arranged on the side of the first insulating layer away from the substrate, the connecting electrode also penetrates the first insulating layer and is electrically connected to the touch electrode, the connecting electrode also penetrates the second insulating layer and is electrically connected to the common electrode, and the shielding electrode extends to one side of the connecting electrode and is electrically connected to the connecting electrode.

[0013] Wherein, along an arrangement direction perpendicular to the substrate and the scan lines, the width of the shielding electrode is greater than the width of the scan lines, and the orthographic projection of the shielding electrode on the substrate covers the orthographic projection of the scan lines on the substrate.

[0014] There is a gap between the orthographic projection of the shielding electrode on the substrate and the orthographic projection of the common electrode on the substrate.

[0015] The display panel further includes a light shielding layer disposed on a side of the shielding electrode away from the substrate, the light shielding layer is disposed corresponding to the scanning line, and the light shielding layer satisfies one of the following conditions:

[0016] Along the arrangement direction perpendicular to the substrate and the scanning lines, the width of the light shielding layer is less than or equal to the width of the scanning lines;

[0017] Along a direction perpendicular to the substrate and the arrangement direction of the scanning lines, a width H1 of the light shielding layer and a width H2 of the scanning lines satisfy: 0

[0018] The substrate has a plurality of touch control areas arranged at intervals, and a junction area arranged between two adjacent touch control areas; the display panel further comprises a driving chip arranged on one side of the substrate, and a plurality of touch control electrodes arranged on a side of the common electrode away from the substrate, one touch control electrode corresponds to one touch control area, and each of the touch control electrodes is electrically connected to the driving chip; ​

[0019] There are multiple shielding electrodes, each of which includes a first shielding portion, a second shielding portion, and a third shielding portion. The first shielding portion is arranged in one of the touch control areas, the second shielding portion is arranged in the intersection area adjacent to one of the touch control areas, the third shielding portion connects the first shielding portion and the second shielding portion, and the third shielding portion is also electrically connected to the driving chip.

[0020] The plurality of touch control areas include a distal touch control area and a proximal touch control area, and the wiring length from the touch control electrode of the distal touch control area to the driving chip is greater than the wiring length from the touch control electrode of the proximal touch control area to the driving chip;

[0021] Wherein, the width of the shielding electrode disposed in the distal touch control area is smaller than the width of the shielding electrode disposed in the proximal touch control area.

[0022] Wherein, the distal touch area corresponds to the proximal touch area, and the distal touch area is farther away from the driving chip than the proximal touch area;

[0023] Wherein, along the arrangement direction from the distal touch area to the proximal touch area, the width of the shielding electrode of each touch area gradually increases.

[0024] Wherein, the display panel further includes:

[0025] a switch layer, disposed between the scan line and the common electrode, the switch layer comprising a data line and an active layer electrically connected to the data line; and

[0026] The pixel electrode is in the same layer as the shielding electrode and is spaced apart from the shielding electrode. The pixel electrode is also electrically connected to the data line.

[0027] A second aspect of the present application provides a method for preparing a display panel, the method comprising:

[0028] providing a substrate;

[0029] forming a scan line disposed on one side of the substrate;

[0030] forming a common electrode disposed on a side of the scanning line away from the substrate, the common electrode comprising a plurality of common electrode portions spaced apart in a direction perpendicular to the substrate and the arrangement direction of the scanning line, the scanning line being disposed corresponding to a gap between two adjacent common electrode portions;

[0031] A shielding electrode is formed on the side of the common electrode away from the substrate, the orthographic projection of the shielding electrode on the substrate covers at least part of the orthographic projection of the scanning line on the substrate, and the shielding electrode is used to introduce a shielding electrical signal and also to shield the electrical signal from the scanning line.

[0032] The manufacturing method of the display panel provided by the second aspect of the present application is simple in operation. By manufacturing a shielding electrode for introducing and shielding an electrical signal corresponding to a scanning line, at least partial leakage of the electrical signal of the scanning line can be avoided, the line width of the light-shielding layer can be reduced, and the aperture ratio of the display panel can be increased.

[0033] The third aspect of the present application provides an electronic device, which includes a housing and a display panel as provided by the first aspect of the present application, and the display panel is installed in the housing.

[0034] For the electronic device provided by the third aspect of the present application, since the display panel provided by the first aspect of the present application is adopted, and a shielding electrode for introducing and shielding an electrical signal corresponding to a scanning line is provided, at least partial leakage of the electrical signal of the scanning line can be avoided, the line width of the light-shielding layer can be reduced, and the aperture ratio of the display panel can be increased. Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be described below.

[0036] Figure 1 It is a schematic structural diagram of a display panel provided by an embodiment of the present application.

[0037] Figure 2 It is a schematic cross-sectional view of the display panel provided by an embodiment of the present application along the section line A-A.

[0038] Figure 3 It is a schematic cross-sectional view of the display panel provided by an embodiment of the present application along the section line B-B.

[0039] Figure 4 It is a schematic partial cross-sectional view of the display panel provided by an embodiment of the present application.

[0040] Figure 5 It is a partial top view of the display panel provided by an embodiment of the present application.

[0041] Figure 6 It is a schematic cross-sectional view of the display panel provided by another embodiment of the present application along the section line B-B.

[0042] Figure 7 It is a top view of the display panel provided by an embodiment of the present application Figure 1 .

[0043] Figure 8 It is a top view of the display panel provided by an embodiment of the present application Figure 2 .

[0044] Figure 9Top view of a display panel provided by an embodiment of the present application Figure 3 。

[0045] Figure 10 Schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present application.

[0046] Label description: Display panel - 1, Substrate - 11, Touch area - 111, Remote touch area - 1111, Proximal touch area - 1112, Junction area - 112, Scan line - 12, Common electrode - 13, Common electrode part - 131, Shielding electrode - 14, First shielding part - 141, Second shielding part - 142, Third shielding part - 143, First insulating layer - 151, Second insulating layer - 152, Third insulating layer - 153, Fourth insulating layer - 154, Switch layer - 16, Data line - 161, Active layer - 162, Planarization layer - 17, Touch electrode - 18, Connection electrode - 181, Pixel electrode - 19, Filter layer - 21, Filter part - 211, Light-shielding layer - 212, Bottom plate - 22, Driver chip - 23. Detailed implementation manners

[0047] The following are the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present application.

[0048] Unless otherwise stated or there are contradictions, the terms or phrases used in the present application have the following meanings:

[0049] In the present application, "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features.

[0050] In the present application, "one or several" refers to any one, any two, or any two or more of the listed items. Among them, "several" refers to any two or more.

[0051] In the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present application.

[0052] In this application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a connection, a detachable connection, or an integral one. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] To reduce costs, display panels mostly adopt a dual gate or triple gate architecture to reduce the number of driving ICs. The driving IC used in the Incell TDDI display panel is more costly, and the display panel using triple gate can maximize the reduction of IC costs. However, in the triple gate Incell technology, since the common electrode at the touch sensing (Incell touch sensor) partition between two pixel units needs to be disconnected, the electrical signal of the high-voltage scan line (gate) leaks out, resulting in abnormal display above the gate trace, and a relatively wide light-shielding layer line width is required to block it, thereby reducing the aperture ratio of the display panel.

[0054] Moreover, in the triple gate Incell technology, to solve the problem of electrical signal leakage of the data line, a corresponding light-shielding layer is provided above the data line, and the data line is covered by the light-shielding layer to avoid the electrical signal leakage of the data line. It should be emphasized that in the triple gate Incell technology, the electrical signal of the scan line is greater than that of the data line. In other words, the voltage of the scan line is higher than that of the data line, resulting in the electrical signal of the scan line being more likely to leak out compared to the electrical signal of the data line, and a wider line width of the light-shielding layer used to cover the scan line in related technologies is required, thereby severely reducing the aperture ratio of the display panel.

[0055] Please refer to Figures 1 - 3 , Figure 1 , which is a schematic structural diagram of a display panel provided by an embodiment of this application. Figure 2 , which is a schematic cross-sectional view of the display panel provided by an embodiment of this application along the section line A-A. Figure 3 , which is a schematic cross-sectional view of the display panel provided by an embodiment of this application along the section line B-B.

[0056] This embodiment provides a display panel 1, which includes a substrate 11, a scanning line 12, a common electrode 13, and a shielding electrode 14. The scanning line 12 is disposed on one side of the substrate 11. The common electrode 13 is disposed on the side of the scanning line 12 away from the substrate 11. The common electrode 13 includes a plurality of common electrode portions 131 spaced apart along a direction perpendicular to the arrangement direction of the substrate 11 and the scanning line 12. The scanning line 12 is disposed corresponding to the gap between two adjacent common electrode portions 131. The shielding electrode 14 is disposed on the side of the common electrode 13 away from the substrate 11. The orthographic projection of the shielding electrode 14 on the substrate 11 covers at least a part of the orthographic projection of the scanning line 12 on the substrate 11. The shielding electrode 14 is used to introduce a shielding electrical signal and also used to shield the electrical signal from the scanning line 12.

[0057] The display panel 1 provided by this embodiment includes a substrate 11, a scanning line 12, a common electrode 13, and a shielding electrode 14, and may further include other structures. Optionally, the display panel 1 includes a substrate 11, a scanning line 12 disposed on one side of the substrate 11, a third insulating layer 153 covering the scanning line 12, a switching layer 16 disposed on the side of the third insulating layer 153 away from the substrate 11, a fourth insulating layer 154 covering the switching layer 16, a planarization layer 17 disposed on the side of the fourth insulating layer 154 away from the substrate 11, a common electrode 13 disposed on the side of the planarization layer 17 away from the substrate 11, a second insulating layer 152 covering the common electrode 13, a touch control electrode 18 disposed on the side of the second insulating layer 152 away from the substrate 11, a first insulating layer 151 covering the touch control electrode 18, a pixel electrode 19 and a shielding electrode 14 disposed on the side of the first insulating layer 151 away from the substrate 11.

[0058] Wherein, the scanning line 12 is used as a gate. The switching layer 16 includes a data line 161 and an active layer 162 electrically connected to the data line 161. The data line 161 is used as a source and a drain. The touch control electrode 18 is electrically connected to the common electrode 13. The pixel electrode 19 is electrically connected to the data line 161.

[0059] Optionally, the display panel 1 further includes a color filter layer 21 disposed on the side of the pixel electrode 19 away from the substrate 11, and a bottom plate 22 disposed on the side of the color filter layer 21 away from the substrate 11. The color filter layer 21 includes a plurality of color filter portions 211 spaced apart along a direction perpendicular to the arrangement direction from the substrate 11 to the scanning line 12. A light shielding layer 212 is provided between any two adjacent color filter portions 211. The light shielding layer 212 is disposed corresponding to the scanning line 12 and the data line 161. For example, the color filter portion 211 can be red, or blue, or green.

[0060] The display panel 1 provided in this embodiment includes a shielding electrode 14 for shielding the electrical signals of the self-scanning lines 12. The shielding electrode 14 covers at least part of the scanning lines 12. For example, the orthographic projection of the shielding electrode 14 on the substrate 11 covers part of the orthographic projection of the scanning lines 12 on the substrate 11. Another example is that the orthographic projection of the shielding electrode 14 on the substrate 11 covers all of the orthographic projection of the scanning lines 12 on the substrate 11. Another example is that the orthographic projection of the shielding electrode 14 on the substrate 11 coincides with the orthographic projection of the scanning lines 12 on the substrate 11. The shielding electrode 14 is used to introduce a shielding electrical signal. Optionally, the shielding electrical signal can be any electrical signal, can also be the same electrical signal as the common electrode 13, or can also be the same electrical signal as the touch electrode 18, etc.

[0061] In this embodiment, the shielding electrode 14 is provided corresponding to the scanning lines 12, and the shielding electrode 14 is used to introduce a shielding electrical signal. Therefore, the shielding electrode 14 can shield the electrical signals of the scanning lines 12 and avoid the leakage of the electrical signals of at least part of the scanning lines 12.

[0062] Compared with the display panel 1 in the related art that needs to provide a relatively wide light-shielding layer 212 to block the scanning lines 12, in this embodiment, by using the shielding electrode 14 that introduces a shielding electrical signal corresponding to the scanning lines 12, the leakage of the electrical signals of at least part of the scanning lines 12 can be avoided, the line width of the light-shielding layer 212 can be reduced, and the aperture ratio of the display panel 1 can be improved.

[0063] Please refer to Figures 1 - 3 together. In one embodiment, the display panel 1 further includes a touch electrode 18 provided on the side of the common electrode 13 facing away from the substrate 11, and the touch electrode 18 is electrically connected to the common electrode 13; wherein, when the display panel 1 is in a touch state, the shielding electrical signal is the same as the electrical signal generated by the touch electrode 18, and when the display panel 1 is in a display state, the shielding electrical signal is the same as the electrical signal generated by the common electrode 13.

[0064] When a user touches the display panel 1 to control the display panel 1, that is, when the display panel 1 is in a touch state, the touch electrode 18 generates a touch electrical signal, and the touch electrical signal is transmitted to the common electrode 13. When the user does not touch the display panel 1 and the display panel 1 is in a display state, the common electrode 13 generates a common electrical signal, and the common electrical signal is transmitted to the touch electrode 18.

[0065] Specifically, when the display panel 1 is in a touch state, the shielding electrical signal is the same as the electrical signal generated by the touch electrode 18. In other words, at this time, the shielding electrode 14 introduces the touch electrical signal of the touch electrode 18. When the display panel 1 is in a display state, the shielding electrical signal is the same as the electrical signal generated by the common electrode 13. In other words, at this time, the shielding electrode 14 introduces the common electrical signal of the common electrode 13.

[0066] The shielding electrical signal is introduced into the shielding electrode 14 in the following manner: For example, the display panel 1 further includes a signal line electrically connected to the shielding electrode 14, and the signal line is used to input the shielding electrical signal. For another example, the shielding electrode 14 is electrically connected to the touch electrode 18. For another example, the shielding electrode 14 is electrically connected to the common electrode 13.

[0067] In this embodiment, the shielding electrode 14 is coordinated with the display panel 1 in different states, and the shielding electrical signal is respectively the same as the electrical signal of the touch electrode 18 or the common electrode 13, so as to avoid interference between the shielding electrical signal and the electrical signal of each state of the display panel 1, avoid the shielding signal affecting the touch operation or display effect of the display panel 1, and improve the stability and reliability of the display panel 1.

[0068] Please refer to Figures 1 - 4 , Figure 4 A partial cross-sectional schematic diagram of a display panel provided in one embodiment of the present application. In one embodiment, the display panel 1 further includes a first insulating layer 151 covering the touch electrode 18, the shielding electrode 14 is disposed on a side of the first insulating layer 151 away from the substrate 11, and the shielding electrode 14 also penetrates the first insulating layer 151 and is electrically connected to the touch electrode 18.

[0069] Part of the shielding electrode 14 is located on the side of the first insulating layer 151 away from the substrate 11, and the other part penetrates the first insulating layer 151 and is electrically connected to the touch electrode 18. Specifically, when the display panel 1 is in a touch state, the touch electrode 18 generates a touch electrical signal, which is transmitted from the touch electrode 18 to the shielding electrode 14. At this time, the shielding electrical signal is the same as the electrical signal generated by the touch electrode 18. When the display panel 1 is in a display state, the common electrode 13 generates a common electrical signal, which is transmitted from the common electrode 13 to the touch electrode 18, and then transmitted from the touch electrode 18 to the shielding electrode 14. At this time, the shielding electrical signal is the same as the electrical signal generated by the common electrode 13.

[0070] In this embodiment, the shielding electrode 14 is electrically connected to the touch electrode 18, so that the leakage of at least part of the electrical signal of the scanning line 12 can be avoided, the line width of the light shielding layer 212 can be reduced, and the aperture ratio of the display panel 1 can be improved. At the same time, the structure is simplified, and there is no need to add new signal lines, thereby reducing the process steps.

[0071] Please refer to Figures 1 - 5 , Figure 5A partial top view of a display panel provided by an embodiment of the present application. In one embodiment, the display panel 1 further includes a connection electrode 181 and a second insulating layer 152 covering the common electrode 13. The touch electrode 18 is disposed on a side of the second insulating layer 152 away from the substrate 11. The connection electrode 181 is disposed on a side of the first insulating layer 151 away from the substrate 11. The connection electrode 181 further penetrates through the first insulating layer 151 and is electrically connected to the touch electrode 18. The connection electrode 181 further penetrates through the second insulating layer 152 and is electrically connected to the common electrode 13. The shielding electrode 14 extends to a side of the connection electrode 181 and is electrically connected to the connection electrode 181.

[0072] The display panel 1 provided by this embodiment further includes a connection electrode 181 for electrically connecting the touch electrode 18 and the common electrode 13. Part of the connection electrode 181 is disposed on a side of the first insulating layer 151 away from the substrate 11. Another part of the connection electrode 181 penetrates through the first insulating layer 151 and is electrically connected to the touch electrode 18. Still another part of the connection electrode 181 penetrates through the first insulating layer 151 and the second insulating layer 152 and is electrically connected to the common electrode 13.

[0073] Moreover, the shielding electrode 14 disposed on the first insulating layer 151 further extends to a side of the connection electrode 181 and is electrically connected to the connection electrode 181.

[0074] Specifically, when the display panel 1 is in a touch state, the touch electrode 18 generates a touch electrical signal. The touch electrical signal is transmitted from the touch electrode 18 to the shielding electrode 14, or the touch electrical signal is transmitted from the touch electrode 18 to the connection electrode 181 and then from the connection electrode 181 to the shielding electrode 14. At this time, the shielding electrical signal is the same as the electrical signal generated by the touch electrode 18.

[0075] When the display panel 1 is in a display state, the common electrode 13 generates a common electrical signal. The common electrical signal is transmitted from the common electrode 13 to the touch electrode 18 and then from the touch electrode 18 to the shielding electrode 14, or the common electrical signal is transmitted from the common electrode 13 to the connection electrode 181 and then from the connection electrode 181 to the shielding electrode 14. At this time, the shielding electrical signal is the same as the electrical signal generated by the common electrode 13.

[0076] In addition, the shielding electrode 14 can also serve as an intermediary for transmitting electrical signals between the touch electrode 18 and the common electrode 13, equivalent to adding a connection electrode 181, which improves the reliability of electrical signal transmission in the display panel 1.

[0077] In this embodiment, by electrically connecting the shielding electrode 14 to the connection electrode 181, it is possible to avoid the leakage of at least part of the electrical signal of the scanning line 12, reduce the line width of the light-shielding layer 212, increase the aperture ratio of the display panel 1, and at the same time, increase the structure through which the touch electrical signal and the common electrical signal can be transmitted, improving the reliability of electrical signal transmission in the display panel 1.

[0078] Moreover, in the process of manufacturing the display panel 1, the connection electrode 181 and the shielding electrode 14 are manufactured simultaneously, eliminating the need for additional processes and masks, and improving the manufacturing efficiency.

[0079] Please refer to Figures 1 - 3 , in one embodiment, along the direction perpendicular to the arrangement direction of the substrate 11 and the scanning line 12 (as shown by the direction D1 in Figure 3 ), the width of the shielding electrode 14 is greater than the width of the scanning line 12, and the orthographic projection of the shielding electrode 14 on the substrate 11 covers the orthographic projection of the scanning line 12 on the substrate 11.

[0080] The line width of the shielding electrode 14 is greater than the line width of the scanning line 12 so that the shielding electrode 14 completely covers the scanning line 12. In this embodiment, by defining the widths of the shielding electrode 14 and the scanning line 12, it is ensured that the shielding electrode 14 can completely cover the scanning line 12, avoiding the leakage of the electrical signal of the scanning line 12, improving the shielding effect of the shielding electrode 14 on the electrical signal of the scanning line 12, reducing the line width of more light-shielding layers 212, and further increasing the aperture ratio of the display panel 1.

[0081] Please refer to Figure 1 , Figure 2 , and Figure 6 , Figure 6 is a schematic cross-sectional view of the display panel provided by another embodiment of the present application along the section line B-B. In one embodiment, there is a gap between the orthographic projection of the shielding electrode 14 on the substrate 11 and the orthographic projection of the common electrode 13 on the substrate 11.

[0082] The orthographic projection of the shielding electrode 14 on the substrate 11 does not coincide with the orthographic projection of the common electrode 13 on the substrate 11. It can also be understood that the shielding electrode 14 does not cover the common electrode 13, or rather, the shielding electrode 14 and the common electrode 13 are arranged in an interleaved manner. Optionally, the orthographic projection of the shielding electrode 14 on the substrate 11 is located between the orthographic projections of two adjacent common electrode portions 131 on the substrate 11.

[0083] In this embodiment, by defining the positions of the shielding electrode 14 and the common electrode 13, the formation of a storage capacitor between the shielding electrode 14 and the common electrode 13 is avoided, interference with the electrical signal of the display panel 1 is avoided, and the stability and reliability of the display panel 1 are improved.

[0084] Please refer to Figures 1 - 3 , in one embodiment, the display panel 1 further includes a light-shielding layer 212 disposed on a side of the shielding electrode 14 away from the substrate 11, the light-shielding layer 212 is disposed corresponding to the scanning line 12, and the light-shielding layer 212 satisfies one of the following conditions:

[0085] Along the direction perpendicular to the arrangement direction of the substrate 11 and the scanning line 12 (as shown by the direction D in Figure 3 ), the width of the light-shielding layer 212 is less than or equal to the width of the scanning line 12. And / or, along the direction perpendicular to the arrangement direction of the substrate 11 and the scanning line 12, the width H1 of the light-shielding layer 212 and the width H2 of the scanning line 12 satisfy: 0 < H1 - H2 ≤ 2 μm.

[0086] Optionally, the difference between the width H1 of the light-shielding layer 212 and the width H2 of the scanning line 12, H1 - H2 can be 0.5 μm, or 1 μm, or 1.5 μm, or 2 μm, etc.

[0087] In this embodiment, by providing the shielding electrode 14, at least partial leakage of the electrical signal of the scanning line 12 can be avoided, the line width of the light-shielding layer 212 can be reduced, so that the width of the light-shielding layer 212 is less than or equal to the width of the scanning line 12, or slightly greater than the width of the scanning line 12, thereby improving the aperture ratio of the display panel 1.

[0088] Please refer to Figure 7 , Figure 7 is a top view of the display panel provided by an embodiment of the present application. Figure 1 . In one embodiment, the substrate 11 has a plurality of touch areas 111 arranged at intervals, and a connection area 112 disposed between two adjacent touch areas 111; the display panel 1 further includes a driving chip 23 disposed on one side of the substrate 11, and a plurality of touch electrodes 18 disposed on a side of the common electrode 13 away from the substrate 11, one touch electrode 18 corresponds to one touch area 111, and each touch electrode 18 is electrically connected to the driving chip 23.

[0089] The number of the shielding electrodes 14 is plural, each shielding electrode 14 includes a first shielding portion 141, a second shielding portion 142, and a third shielding portion 143, the first shielding portion 141 is disposed within one touch area 111, the second shielding portion 142 is disposed in the connection area 112 adjacent to one touch area 111, the third shielding portion 143 connects the first shielding portion 141 and the second shielding portion 142, and the third shielding portion 143 is also electrically connected to the driving chip 23.

[0090] The substrate 11 provided by this embodiment has a touch area 111 and a handover area 112. Each touch area 111 includes a plurality of pixel units. The number of pixel units in any two touch areas 111 may be equal or unequal. Optionally, a plurality of touch areas 111 are arranged in an array. A touch electrode 18 is correspondingly provided in one touch area 111. The touch electrode 18 includes a connected touch part and a touch connection line. One touch part is provided in one touch area 111. One end of each touch connection line is connected to the touch part, and the other end is connected to the driving chip 23. Touch electrical signals can be transmitted from the touch electrode 18 to the driving chip 23. The driving chip 23 can send electrical signals to the touch electrode 18. The area corresponding to the gap between two adjacent touch areas 111 is the handover area 112.

[0091] The shielding electrode 14 provided by this embodiment includes a first shielding part 141, a second shielding part 142, and a third shielding part 143. The first shielding part 141 is provided in the touch area 111. The orthographic projection of the first shielding part 141 on the substrate 11 covers at least part of the orthographic projection of the scanning line provided in the touch area 111 on the substrate 11. Optionally, the number of the first shielding parts 141 is multiple, and the first shielding parts 141 are arranged corresponding to the gaps between two adjacent common electrode parts 131, and the first shielding parts 141 are arranged corresponding to the gaps between two adjacent pixel units.

[0092] The second shielding part 142 is provided in the handover area 112. The orthographic projection of the second shielding part 142 on the substrate 11 covers at least part of the orthographic projection of the scanning line provided in the handover area 112 on the substrate 11. The second shielding part 142 corresponds to the gap between the pixel units of one touch area 111 and the pixel units of the adjacent touch area 111. Optionally, the extending direction of the second shielding part 142 is the same as the extending direction of the first shielding part 141. The third shielding part 143 connects the first shielding part 141, the second shielding part 142, and the driving chip 23.

[0093] One end of the third shielding part 143 is connected to the driving chip 23, and the other end extends to a preset touch area 111 and is connected to the first shielding part 141 provided in the preset touch area 111 and the second shielding part 142 provided in the handover area 112 adjacent to the preset touch area 111. Optionally, the extending direction of the third shielding part 143 is perpendicular to the extending direction of the first shielding part 141, and the extending direction of the third shielding part 143 is perpendicular to the extending direction of the second shielding part 142.

[0094] Since the third shielding portion 143 is electrically connected to the driving chip 23, the driving chip 23 can transmit the shielding electrical signal to the shielding electrode 14. When the display panel 1 is in the touch state, the driving chip 23 transmits the touch electrical signal generated by the touch electrode 18 to the shielding electrode 14. When the display panel 1 is in the display state, the driving chip 23 transmits the common electrical signal generated by the common electrode 13 to the shielding electrode 14.

[0095] Optionally, at least a part of the orthographic projection of the third shielding portion 143 on the substrate 11 coincides with the orthographic projection of the touch electrode 18 on the substrate 11. Such a setting can enable the shielding electrode 14 to function as a shield, avoiding the leakage of at least part of the scanning line electrical signal, while reducing the light shielding effect of the shielding electrode 14 and improving the aperture ratio of the display panel 1.

[0096] In this embodiment, by setting the shielding electrode 14 as the first shielding portion 141, the second shielding portion 142, and the third shielding portion 143, and electrically connecting the driving chip 23 to the shielding electrode 14, the driving chip 23 can transmit the shielding electrical signal, eliminating the need to introduce redundant traces to introduce the shielding electrical signal and reducing the generation of crosstalk capacitance. Moreover, the first shielding portion 141 provided in the touch area 111 further improves the shielding effect of the shielding electrode 14, enhancing the signal amount of touch sensing in the touch area 111 and further improving the accuracy and sensitivity of touch.

[0097] In addition, the first shielding portion 141, the second shielding portion 142, and the third shielding portion 143 cooperate with each other, increasing the coverage area of the shielding electrode 14 on the scanning lines in the touch area 111 and the transition area 112, further improving the shielding effect of the shielding electrode 14, further reducing the line width of the light shielding layer, and further improving the aperture ratio of the display panel 1.

[0098] Please refer to Figure 8 , Figure 8 which is the top view of the display panel provided by an embodiment of the present application. Figure 2 In one embodiment, the multiple touch areas 111 include a distal touch area 1111 and a proximal touch area 1112, and the trace length from the touch electrode 18 of the distal touch area 1111 to the driving chip 23 is greater than the trace length from the touch electrode 18 of the proximal touch area 1112 to the driving chip 23.

[0099] Among them, the width of the shielding electrode 14 provided in the distal touch area 1111 is smaller than the width of the shielding electrode 14 provided in the proximal touch area 1112.

[0100] The wiring length from the touch electrode 18 in the distal touch area 1111 to the driving chip 23 is greater than the wiring length from the touch electrode 18 in the proximal touch area 1112 to the driving chip 23. It can also be understood that the length of the touch connection line connecting the distal touch area 1111 is greater than the length of the touch connection line connecting the proximal touch area 1112. Optionally, the width of the third shielding portion 143 of the shielding electrode 14 provided in the distal touch area 1111 is smaller than the width of the third shielding portion 143 of the shielding electrode 14 provided in the proximal touch area 1112.

[0101] Optionally, the width ratio of the shielding electrode 14 provided in the distal touch area 1111 to the shielding electrode 14 provided in the proximal touch area 1112 is 1:(1.1 - 2.5). For example, the width ratio of the shielding electrode 14 provided in the distal touch area 1111 to the shielding electrode 14 provided in the proximal touch area 1112 can be 1:1.1, or 1:1.3, or 1:1.5, or 1:1.7, or 1:1.9, or 1:2.1, or 1:2.3, or 1:2.5, etc.

[0102] Further optionally, the width of the shielding electrode 14 provided in the distal touch area 1111 is 7μm - 12μm. For example, the width of the shielding electrode 14 provided in the distal touch area 1111 can be 7μm, or 8μm, or 9μm, or 10μm, or 11μm, or 12μm, etc.

[0103] Further optionally, the width of the shielding electrode 14 provided in the proximal touch area 1112 is 13μm - 18μm. For example, the width of the shielding electrode 14 provided in the proximal touch area 1112 can be 13μm, or 14μm, or 15μm, or 16μm, or 17μm, or 18μm, etc.

[0104] In the related art, due to the relatively large wiring length from the distal touch area 1111 to the driving chip 23, the internal wiring resistance is relatively large and the parasitic capacitance is relatively large, resulting in a relatively large loss of the shielding electrical signal transmitted from the driving chip 23 to the distal touch area 1111, and further resulting in a relatively large difference between the shielding signals transmitted from the driving chip 23 to the distal touch area 1111 and the shielding signals transmitted from the driving chip 23 to the proximal touch area 1112. In the related art, it is usually necessary for the driving chip 23 to adopt an algorithm to optimize and compensate the shielding electrical signal to reduce the difference between the shielding signals transmitted from the driving chip 23 to the distal touch area 1111 and the shielding signals transmitted from the driving chip 23 to the proximal touch area 1112.

[0105] In this embodiment, by limiting the width of the shielding electrode 14, the width of the shielding electrode 14 provided in the distal touch area 1111 is small, and the width of the shielding electrode 14 provided in the proximal touch area 1112 is large, so as to supplement the capacitance of the shielding electrode 14 in the proximal touch area 1112, thereby reducing the difference in the shielding signals transmitted by the driving chip 23 to the distal touch area 1111 and the driving chip 23 to the proximal touch area 1112, and improving the shielding effect of the shielding electrode 14.

[0106] Please refer to Figure 9 , Figure 9 for the top view of the display panel provided by an embodiment of the present application Figure 3 . In one embodiment, the distal touch area 1111 corresponds to the proximal touch area 1112, and the distal touch area 1111 is farther from the driving chip 23 than the proximal touch area 1112.

[0107] Wherein, along the arrangement direction from the distal touch area 1111 to the proximal touch area 1112 (as shown by the direction D2 in Figure 9 ), the width of the shielding electrode 14 of each touch area 111 gradually increases.

[0108] The distal touch area 1111 corresponds to the proximal touch area 1112, which can also be understood as that the distal touch area 1111 and the proximal touch area 1112 are arranged in the same row or the same column. Along the arrangement direction from the distal touch area 1111 to the proximal touch area 1112, it can also be understood as the direction close to the driving chip 23.

[0109] For example, multiple touch areas 111 include a first touch area 111, a second touch area 111, and a third touch area 111 arranged along the arrangement direction from the distal touch area 1111 to the proximal touch area 1112. The first touch area 111 is farther from the driving chip 23 than the second touch area 111, and the second touch area 111 is farther from the driving chip 23 than the third touch area 111. The width of the shielding electrode 14 provided in the first touch area 111 is smaller than the width of the shielding electrode 14 provided in the second touch area 111, and the width of the shielding electrode 14 provided in the second touch area 111 is smaller than the width of the shielding electrode 14 provided in the third touch area 111.

[0110] In this embodiment, by limiting the arrangement direction from the distal touch area 1111 to the proximal touch area 1112, the width of the shielding electrode 14 of each touch area 111 gradually increases, thereby further reducing the difference in the shielding signals transmitted by the driving chip 23 to the distal touch area 1111 and the driving chip 23 to the proximal touch area 1112, and further improving the shielding effect of the shielding electrode 14.

[0111] Please refer to together Figures 1 - 3, in one embodiment, the display panel 1 further includes a switching layer 16 and a pixel electrode 19. The switching layer 16 is disposed between the scan line 12 and the common electrode 13. The switching layer 16 includes a data line 161 and an active layer 162 electrically connected to the data line 161; the pixel electrode 19 and the shielding electrode 14 are in the same layer and are spaced apart. The pixel electrode 19 is also electrically connected to the data line 161.

[0112] The data line 161 serves as a source electrode and a drain electrode, and both the source electrode and the drain electrode are electrically connected to the active layer 162. Optionally, the orthographic projection of the switching layer 16 on the substrate 11 covers a part of the orthographic projection of the scan line 12 on the substrate 11. The data line 161 and the scan line 12 are arranged in a staggered manner. A part of the pixel electrode 19 is disposed on a side of the first insulating layer 151 away from the substrate 11, and another part of the pixel electrode 19 penetrates through the first insulating layer 151, the second insulating layer 152, the planarization layer 17, and the fourth insulating layer 154 and is electrically connected to the data line 161. The pixel electrode 19 includes a plurality of sub-pixel electrodes 19 that are spaced apart on a side of the first insulating layer 151 away from the substrate 11, and the extending direction of the sub-pixel electrode 19 is the same as the extending direction of the scan line 12. The plurality of sub-pixel electrodes 19 correspond to the common electrode 13. The shielding electrode 14 is located between two adjacent sub-pixel electrodes 19. The connection electrode 181, the pixel electrode 19, and the shielding electrode 14 are disposed in the same layer and are all located on a side of the first insulating layer 151 away from the substrate 11.

[0113] In this embodiment, the shielding electrode 14 and the pixel electrode 19 are disposed in the same layer, so that when the display panel 1 is fabricated, the shielding electrode 14 and the pixel electrode 19 can be fabricated synchronously, without adding new processes and masks, improving the fabrication efficiency.

[0114] Please refer to Figures 1 - 10 , Figure 10 is a schematic flowchart of a method for fabricating a display panel provided in an embodiment of the present application. The present application also provides a method for fabricating a display panel 1, and the fabrication method includes:

[0115] S100, providing a substrate 11.

[0116] S200, forming a scan line 12 on one side of the substrate 11.

[0117] S300, forming a common electrode 13 on a side of the scan line 12 away from the substrate 11. The common electrode 13 includes a plurality of common electrode portions 131 that are spaced apart along a direction perpendicular to the arrangement direction of the substrate 11 and the scan line 12. The scan line 12 is disposed corresponding to a gap between two adjacent common electrode portions 131.

[0118] S400 forms a shielding electrode 14 on the side of the common electrode 13 facing away from the substrate 11. The positive projection of the shielding electrode 14 on the substrate 11 covers at least a part of the positive projection of the scanning line 12 on the substrate 11. The shielding electrode 14 is used to introduce a shielding electrical signal and also to shield the electrical signal from the scanning line 12.

[0119] The manufacturing method of the display panel 1 provided in this embodiment is simple in operation. By preparing the shielding electrode 14 for introducing the shielding electrical signal corresponding to the scanning line 12, at least partial leakage of the electrical signal of the scanning line 12 can be avoided, the line width of the light-shielding layer 212 can be reduced, and the aperture ratio of the display panel 1 can be improved.

[0120] Optionally, provide the substrate 11. Then, form the scanning line 12 on one side of the substrate 11. Then, form the third insulating layer 153 covering the substrate 11, and form the switching layer 16 on the side of the third insulating layer 153 facing away from the substrate 11. The switching layer 16 includes the data line 161 and the active layer 162 electrically connected to the data line 161. Then, form the fourth insulating layer 154 covering the switching layer 16. Then, form the planarization layer 17 on the side of the fourth insulating layer 154 facing away from the substrate 11. Then, provide the common electrode 13 on the side of the planarization layer 17 facing away from the substrate 11. The common electrode 13 includes common electrode portions 131 arranged at intervals along a direction perpendicular to the arrangement direction of the substrate 11 and the scanning line 12, and the scanning line 12 is disposed corresponding to the gap between two adjacent common electrode portions 131.

[0121] Then, form the second insulating layer 152 covering the common electrode 13. Then, form the touch control electrode 18 on the side of the second insulating layer 152 facing away from the substrate 11. Then, form the first insulating layer 151 covering the touch control electrode 18. Then, form the pixel electrode 19, the shielding electrode 14, and the connection electrode 181 on the side of the first insulating layer 151 facing away from the substrate 11. The pixel electrode 19 penetrates through the first insulating layer 151, the second insulating layer 152, the planarization layer 17, and the fourth insulating layer 154 and is electrically connected to the data line 161. The positive projection of the shielding electrode 14 on the substrate 11 covers at least a part of the positive projection of the scanning line 12 on the substrate 11. The connection electrode 181 penetrates through the first insulating layer 151 and is electrically connected to the touch control electrode 18, and the connection electrode 181 also penetrates through the first insulating layer 151 and the second insulating layer 152 and is electrically connected to the common electrode 13.

[0122] Further optionally, the shielding electrode 14, the pixel electrode 19, and the connection electrode 181 are prepared using the same mask.

[0123] This application also provides an electronic device, which includes a housing and the display panel provided as above in this application, and the display panel is installed in the housing.

[0124] For the electronic device provided by this embodiment, since the display panel provided above in this application is adopted and a shielding electrode for introducing a shielding electrical signal corresponding to a scanning line is provided, at least partial leakage of the electrical signal of the scanning line can be avoided, the line width of the light-shielding layer can be reduced, and the aperture ratio of the display panel can be increased.

[0125] The above has introduced in detail the content provided by the embodiments of this application. The principle and embodiments of this application have been elaborated and explained herein. The above description is only used to help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific embodiments and application scopes. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; A scanning line is provided on one side of the substrate; a common electrode disposed on a side of the scan line away from the substrate, the common electrode comprising a plurality of common electrode portions spaced apart in a direction perpendicular to the substrate and the arrangement direction of the scan line, the scan line being disposed corresponding to a gap between two adjacent common electrode portions; and a shielding electrode, disposed on a side of the common electrode away from the substrate, wherein the orthographic projection of the shielding electrode on the substrate covers at least a portion of the orthographic projection of the scanning line on the substrate, and the shielding electrode is used to introduce a shielding electrical signal and also to shield the electrical signal from the scanning line; The substrate has a plurality of touch control areas arranged at intervals, and a junction area arranged between two adjacent touch control areas; the display panel further comprises a driving chip arranged on one side of the substrate, and a plurality of touch control electrodes arranged on a side of the common electrode away from the substrate, one touch control electrode corresponds to one touch control area, and each of the touch control electrodes is electrically connected to the driving chip; There are multiple shielding electrodes, each of which includes a first shielding portion, a second shielding portion, and a third shielding portion. The first shielding portion is arranged in one of the touch control areas, the second shielding portion is arranged in the intersection area adjacent to one of the touch control areas, the third shielding portion connects the first shielding portion and the second shielding portion, and the third shielding portion is also electrically connected to the driving chip; at least part of the orthographic projection of the third shielding portion on the substrate overlaps with the orthographic projection of the touch control electrode on the substrate.

2. The display panel according to claim 1, wherein: The display panel also includes a touch electrode arranged on a side of the common electrode away from the substrate, and the touch electrode is electrically connected to the common electrode; wherein, when the display panel is in a touch state, the shielding electrical signal is the same as the electrical signal generated by the touch electrode, and when the display panel is in a display state, the shielding electrical signal is the same as the electrical signal generated by the common electrode.

3. The display panel according to claim 2, wherein: The display panel further includes a first insulating layer covering the touch electrode. The shielding electrode is disposed on a side of the first insulating layer away from the substrate. The shielding electrode also penetrates the first insulating layer and is electrically connected to the touch electrode.

4. The display panel according to claim 3, wherein: The display panel also includes a connecting electrode and a second insulating layer covering the common electrode, the touch electrode is arranged on a side of the second insulating layer away from the substrate, the connecting electrode is arranged on a side of the first insulating layer away from the substrate, the connecting electrode also penetrates the first insulating layer and is electrically connected to the touch electrode, the connecting electrode also penetrates the second insulating layer and is electrically connected to the common electrode, and the shielding electrode extends to one side of the connecting electrode and is electrically connected to the connecting electrode.

5. The display panel according to claim 1, wherein: Along a direction perpendicular to the arrangement direction of the substrate and the scan lines, the width of the shielding electrode is greater than the width of the scan lines, and the orthographic projection of the shielding electrode on the substrate covers the orthographic projection of the scan lines on the substrate.

6. The display panel according to claim 1, wherein: A gap is formed between an orthographic projection of the shielding electrode on the substrate and an orthographic projection of the common electrode on the substrate.

7. The display panel according to claim 1, wherein: The display panel further includes a light shielding layer disposed on a side of the shielding electrode away from the substrate, the light shielding layer being disposed corresponding to the scanning line, and the light shielding layer satisfies one of the following conditions: Along the arrangement direction perpendicular to the substrate and the scanning lines, the width of the light shielding layer is less than or equal to the width of the scanning lines; Along a direction perpendicular to the arrangement of the substrate and the scanning lines, a width H1 of the light shielding layer and a width H2 of the scanning lines satisfy: 0<H1-H2≤2μm.

8. The display panel according to claim 1, wherein: The multiple touch control areas include a far-end touch control area and a near-end touch control area, and the wiring length from the touch control electrode of the far-end touch control area to the driving chip is greater than the wiring length from the touch control electrode of the near-end touch control area to the driving chip; Wherein, the width of the shielding electrode disposed in the distal touch control area is smaller than the width of the shielding electrode disposed in the proximal touch control area.

9. The display panel according to claim 8, wherein: The far-end touch control area corresponds to the near-end touch control area, and the far-end touch control area is farther away from the driving chip than the near-end touch control area; Wherein, along the arrangement direction from the distal touch area to the proximal touch area, the width of the shielding electrode of each touch area gradually increases.

10. The display panel according to claim 1, wherein: The display panel further includes: a switch layer, disposed between the scan line and the common electrode, the switch layer comprising a data line and an active layer electrically connected to the data line; and The pixel electrode is in the same layer as the shielding electrode and is spaced apart from the shielding electrode. The pixel electrode is also electrically connected to the data line.

11. A method for preparing a display panel according to claim 1, characterized in that: The preparation method comprises: providing a substrate; forming a scan line disposed on one side of the substrate; forming a common electrode disposed on a side of the scanning line away from the substrate, the common electrode comprising a plurality of common electrode portions spaced apart in a direction perpendicular to the substrate and the arrangement direction of the scanning line, the scanning line being disposed corresponding to a gap between two adjacent common electrode portions; A shielding electrode is formed on the side of the common electrode away from the substrate, the orthographic projection of the shielding electrode on the substrate covers at least part of the orthographic projection of the scanning line on the substrate, and the shielding electrode is used to introduce a shielding electrical signal and also to shield the electrical signal from the scanning line.

12. An electronic device, characterized in that: The electronic device comprises a housing and a display panel as described in any one of claims 1 to 10, wherein the display panel is mounted on the housing.

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