Display panel, display device and preparation method of display panel

Abstract

The invention discloses a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, an isolation structure, a first electrode layer and a touch layer. The isolation structure is arranged on the substrate, and when the first electrode layer is prepared on the substrate, the first electrode layer is disconnected at the position where the isolation structure is located, so that first electrodes which are mutually spaced are formed. And the first electrodes are electrically connected with the first conductive layers of the isolation structures, so that the first electrodes are electrically connected with one another through the first conductive layers to form a whole-surface electrode. The touch control layer comprises touch control electrodes distributed at intervals so as to achieve the touch control function of the display panel. The orthographic projection of at least part of the touch electrodes on the substrate is located in the orthographic projection of the first electrodes on the substrate, and the first electrodes existing between the part of the touch electrodes and the substrate can serve as shielding layers of the touch electrodes so as to reduce the mutual influence of an electric field and a magnetic field between the touch electrodes and the substrate. And the adverse effect of the noise of the substrate on the touch electrode is improved.

Description

Technical Field

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

[0002] With the rapid development of electronic devices, users have higher and higher requirements for display effects, making the screen display of electronic devices receive more and more attention in the industry.

[0003] Reducing the screen power consumption of electronic devices has always been one of the development directions of electronic device screen technology. In display panels, organic light emitting diode (OLED) display panel technology has application prospects in small, medium and large OLED display fields because it can reduce screen power consumption and increase life. However, the array substrate in the OLED display panel will generate noise after being powered on, which has an adverse effect on the touch layer. Summary of the invention

[0004] The embodiments of the present application provide a display panel, a display device and a method for manufacturing a display panel, aiming to improve the problem that noise is generated after the array substrate is powered on, which has an adverse effect on the touch layer.

[0005] A first aspect of the present application provides a display panel, comprising: a substrate; an isolation structure located on the substrate, the isolation structure comprising a first conductive layer; a first electrode layer located on the substrate, the first electrode layer comprising first electrodes spaced apart from each other, the first electrode and the first conductive layer being electrically connected; a touch layer located on a side of the first electrode layer facing away from the substrate, the touch layer comprising touch electrodes distributed at intervals, and at least some of the touch electrodes having an orthographic projection on the substrate located within the orthographic projection of the first electrode on the substrate.

[0006] According to an implementation of the first aspect of the present application, the touch layer further includes touch traces electrically connected to the touch electrodes, and at least part of the touch traces have an orthographic projection on the substrate located within an orthographic projection of the first electrode on the substrate.

[0007] According to any of the aforementioned implementations of the first aspect of the present application, the touch electrodes and the touch traces are arranged on the same layer.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes: a light-emitting layer located on the substrate, the light-emitting layer includes light-emitting units distributed at intervals, a first hollow portion is provided on the touch electrode, and at least part of the light-emitting units are located within the orthographic projection of the first hollow portion on the substrate; or, the touch electrode is a light-transmitting material.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further comprises a pixel definition layer, the pixel definition layer is located on the substrate, the pixel definition layer comprises a pixel definition portion and a pixel opening formed by the pixel definition portion, and at least part of the light emitting unit is located in the pixel opening;

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the light-emitting unit at least partially located in the pixel opening on the substrate is located within the orthographic projection of the first hollow portion on the substrate.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes: a first insulating layer located between the touch layer and the first electrode layer, and the orthographic projection of the touch layer on the substrate is located within the orthographic projection of the first insulating layer on the substrate.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the first insulating layer is a light-transmitting material.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes: a second insulating layer located on a side of the touch layer facing away from the substrate, and an orthographic projection of the touch layer on the substrate is located within an orthographic projection of the second insulating layer on the substrate.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the second insulating layer is a light-transmitting material.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the touch electrodes are arranged at intervals along the first direction, the touch wirings are arranged at intervals along the second direction, and at least part of the touch wirings are extended along the first direction, and one side of the touch electrode in the second direction is electrically connected to the touch wiring, and the first direction and the second direction intersect.

[0016] According to any of the aforementioned implementations of the first aspect of the present application, the touch electrodes have the same size and are aligned along the first direction.

[0017] According to any of the aforementioned implementations of the first aspect of the present application, the size of the touch electrodes gradually decreases along the first direction, and the touch electrodes are aligned along the first direction on one side of the second direction.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, a second hollow portion is provided on the touch electrode, and the orthographic projection of at least a portion of the second hollow portion on the substrate overlaps with the orthographic projection of the isolation structure on the substrate.

[0019] An embodiment of a second aspect of the present application provides a display device, which includes a display panel according to any of the above embodiments.

[0020] An embodiment of a third aspect of the present application provides a method for preparing a display panel, including:

[0021] preparing an isolation structure on a substrate, the isolation structure comprising a first conductive layer;

[0022] Preparing a first electrode layer on a substrate with an isolation structure, the first electrode layer comprising first electrodes spaced apart from each other, the first electrodes being electrically connected to the first conductive layer;

[0023] A touch layer is prepared on the side of the first electrode layer facing away from the substrate. The touch layer includes touch electrodes distributed at intervals. The orthographic projections of at least some of the touch electrodes on the substrate are located within the orthographic projections of the first electrodes on the substrate.

[0024] The display panel implemented according to the embodiment of the present application includes a substrate, an isolation structure, a first electrode layer and a touch layer. The isolation structure is arranged on the substrate. When the first electrode layer is prepared on the substrate, the first electrode layer is disconnected at the location of the isolation structure, thereby forming first electrodes spaced apart from each other. The first electrode is electrically connected to the first conductive layer of the isolation structure, so that each first electrode is electrically connected to each other through the first conductive layer to form a whole-surface electrode. The touch layer includes touch electrodes distributed at intervals to realize the touch function of the display panel. At least part of the touch electrodes are located within the orthographic projection of the first electrode on the substrate in the orthographic projection of the substrate, and at least part of the touch electrodes are located on the side of the first electrode away from the substrate. The first electrode between the part of the touch electrodes and the substrate can serve as a shielding layer for the touch electrodes to reduce the mutual influence of the electric field and the magnetic field between the touch electrodes and the substrate, and improve the adverse effect of the noise of the substrate on the touch electrodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0026] Figure 1 is a partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0027] Figure 2 is a partial cross-sectional view of a display panel in another embodiment;

[0028] Figure 3 is a partial top view of a display panel in another embodiment;

[0029] Figure 4 is a partial cross-sectional view of a display panel in yet another embodiment;

[0030] Figure 5 is a partial top view of a display panel in yet another embodiment;

[0031] Figure 6 is a partial cross-sectional view of a display panel in yet another embodiment;

[0032] Figure 7 is a partial cross-sectional view of a display panel in yet another embodiment;

[0033] Figure 8 is a partial top view of a display panel in yet another embodiment;

[0034] Fig. 9 is a partial cross-sectional view of a display panel in yet another embodiment;

[0035] Fig.10 is a partial top view of a display panel in yet another embodiment;

[0036] Fig.11 is a partial top view of a display panel in yet another embodiment;

[0037] Fig.12 is a partial top view of a display panel in yet another embodiment;

[0038] Fig.13 It is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application;

[0039] Figures 14 to 16 It is a schematic diagram of the preparation process of a method for preparing a display panel provided in an embodiment of the present application.

[0040] Description of reference numerals:

[0041] 10. Display panel;

[0042] 100. Substrate;

[0043] 200, pixel definition layer; 210, pixel definition portion; 220, pixel opening;

[0044] 300, isolation structure; 310, first conductive layer; 320, second layer;

[0045] 400, light-emitting layer; 410, light-emitting unit;

[0046] 500, first electrode layer; 510, first electrode;

[0047] 600, touch layer; 610, touch electrode; 611, first hollow portion; 612, second hollow portion; 620, touch wiring;

[0048] 700, a first insulating layer;

[0049] 800, second insulating layer;

[0050] X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0051] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0053] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0054] Embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel. Embodiments of the display panel, the display device, and the method for manufacturing a display panel are described below in conjunction with the accompanying drawings.

[0055] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0056] See also Figure 1 , Figure 1 It is a partial cross-sectional view of a display panel provided in an embodiment of the present application.

[0057] like Figure 1As shown, the first embodiment of the present application provides a display panel 10, which includes a substrate 100, an isolation structure 300, a first electrode layer 500 and a touch layer 600; the isolation structure 300 is located on the substrate 100, and the isolation structure 300 includes a first conductive layer 310; the first electrode layer 500 is located on the substrate 100, and the first electrode layer 500 includes mutually spaced first electrodes 510, and the first electrodes 510 and the first conductive layer 310 are electrically connected; the touch layer 600 is located on a side of the first electrode layer 500 away from the substrate 100, and the touch layer 600 includes touch electrodes 610 distributed at intervals, and at least part of the touch electrodes 610 are located within the orthographic projection of the first electrode 510 on the substrate 100.

[0058] According to the display panel 10 of the embodiment of the present application, the display panel 10 includes a substrate 100, an isolation structure 300, a first electrode layer 500 and a touch layer 600. The isolation structure 300 is disposed on the substrate 100. When the first electrode layer 500 is prepared on the substrate 100, the first electrode layer 500 is disconnected at the location of the isolation structure 300, thereby forming mutually spaced first electrodes 510. The first electrode 510 is electrically connected to the first conductive layer 310 of the isolation structure 300, so that each first electrode 510 is electrically connected to each other through the first conductive layer 310 to form a whole-surface electrode. The touch layer 600 includes touch electrodes 610 distributed at intervals to realize the touch function of the display panel 10. At least part of the touch electrode 610's orthographic projection on the substrate 100 is located within the orthographic projection of the first electrode 510 on the substrate 100, and at least part of the touch electrode 610 is located on the side of the first electrode 510 facing away from the substrate 100. The first electrode 510 between this part of the touch electrode 610 and the substrate 100 can serve as a shielding layer for the touch electrode 610 to reduce the mutual influence of the electric field and the magnetic field between the touch electrode 610 and the substrate 100, and improve the adverse effect of the noise of the substrate 100 on the touch electrode 610.

[0059] There are many ways to set the isolation structure 300. For example, the isolation structure 300 is set on the side of the pixel defining portion 210 away from the substrate 100, or the pixel defining portion 210 is provided with a groove, and the isolation structure 300 is set in the groove. This application takes the isolation structure 300 being set on the side of the pixel defining portion 210 away from the substrate 100 as an example for description.

[0060] There are many ways to dispose the substrate 100. For example, the substrate 100 may include a substrate and an array substrate disposed on the substrate, or the substrate 100 may also include a buffer layer and a support plate on the side of the substrate away from the array substrate.

[0061] Optionally, the display panel 10 further includes a planar layer located between the substrate 100 and the pixel definition layer 200 .

[0062] Please also read Figure 2 and Figure 3 , Figure 2 is a partial cross-sectional view of a display panel in another embodiment; Figure 3 FIG. 4 is a partial top view of a display panel in another embodiment.

[0063] like Figure 2 and Figure 3 As shown, in some optional embodiments, the touch layer 600 further includes touch traces 620 electrically connected to each touch electrode 610 , and at least part of the touch traces 620 are projected on the substrate 100 within the projection of the first electrode 510 on the substrate 100 .

[0064] In these optional embodiments, the touch wiring 620 of the touch layer 600 is electrically connected to the touch electrode 610 to transmit a signal to the touch electrode 610 to realize the touch function of the display panel 10. At least part of the orthographic projection of the touch wiring 620 on the substrate 100 is located within the orthographic projection of the first electrode 510 on the substrate 100, that is, at least part of the touch wiring 620 is located on the side of the first electrode 510 away from the substrate 100, and the first electrode 510 existing between the part of the touch wiring 620 and the substrate 100 can serve as a shielding layer for the touch wiring 620 to reduce the mutual influence of the electric field and the magnetic field between the touch wiring 620 and the substrate 100, and improve the adverse effect of the noise of the substrate 100 on the touch wiring 620.

[0065] In some optional embodiments, the touch electrodes 610 and the touch traces 620 are disposed on the same layer.

[0066] In these optional embodiments, the touch electrodes 610 and the touch traces 620 are arranged on the same layer, and can be prepared using the same mask plate, thereby simplifying the preparation process. The touch electrodes 610 and the touch traces 620 are arranged with the same material, thereby reducing the preparation cost of the display panel 10. After the touch electrodes 610 and the touch traces 620 are arranged on the same layer, the touch electrodes 610 can adopt self-capacitive touch, and the touch signal is relatively stable.

[0067] Please also read Figure 4 and Figure 5 , Figure 4 is a partial cross-sectional view of a display panel in yet another embodiment; Figure 5 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0068] like Figure 4 and Figure 5As shown, in some optional embodiments, the display panel 10 also includes a light-emitting layer 400, which is located on the substrate 100. The light-emitting layer 400 includes light-emitting units 410 that are spaced apart. A first hollow portion 611 is provided on the touch electrode 610, and the orthographic projection of at least part of the light-emitting unit 410 on the substrate 100 is located within the orthographic projection of the first hollow portion 611 on the substrate 100.

[0069] In these optional embodiments, the light-emitting layer 400 includes light-emitting units 410 distributed at intervals, and the light-emitting units 410 emit light to realize the light-emitting display of the display panel 10. The orthographic projection of the light-emitting unit 410 on the substrate 100 is located within the orthographic projection of the first hollow portion 611 on the substrate 100, that is, the light-emitting unit 410 is exposed from the first hollow portion 611 to reduce the light-emitting shielding of the light-emitting unit 410 by the touch electrode 610, thereby ensuring the display effect of the display panel 10.

[0070] Optionally, the display panel 10 further includes a pixel definition layer 200, which is located on the substrate 100 and includes a pixel definition portion 210 and a pixel opening 220 formed by the pixel definition portion 210. The pixel opening 220 is used to set the light-emitting unit 410 to achieve light-emitting display of the display panel 10.

[0071] Optionally, the orthographic projection of the light emitting unit 410 at least partially located in the pixel opening 220 on the substrate 100 is located within the orthographic projection of the first hollow portion 611 on the substrate 100. That is, the orthographic projection of the effective light emitting unit 410 for emitting light on the substrate 100 is located within the orthographic projection of the first hollow portion 611 on the substrate 100, and the effective light emitting unit 410 is exposed by the first hollow portion 611 to reduce the light blocking of the light emitting unit 410 by the touch electrode 610, thereby ensuring the display effect of the display panel 10.

[0072] Optionally, the material of the touch electrode 610 includes a light-transmitting material, for example, the material of the touch electrode 610 includes indium tin oxide (ITO). When the material of the touch electrode 610 includes a light-transmitting material, the light emitted by the light-emitting unit 410 can pass through the touch electrode 610 to reach the light-emitting surface of the display panel 10, thereby reducing the influence of the touch electrode 610 on the light emission of the light-emitting unit 410. When the material of the touch electrode 610 includes a light-transmitting material, optionally, the first hollow portion 611 may not be provided on the touch electrode 610, thereby increasing the area of ​​the touch electrode 610 and improving the touch performance.

[0073] Optionally, the display panel 10 further includes a pixel electrode exposed by the pixel opening 220, and one of the pixel electrode and the first electrode 510 in the first electrode layer 500 serves as an anode of the light-emitting unit 410, and the other serves as a cathode of the light-emitting unit 410. In the embodiment of the present application, the pixel electrode is used as the anode of the light-emitting unit 410, and the first electrode 510 of the first electrode layer 500 is used as the cathode of the light-emitting unit 410 for illustration.

[0074] Optionally, the light emitting layer 400 includes an electron injection layer (EIL), an electron transport layer (ETL), a light emitting material layer, a hole injection layer (HIL) and a hole transport layer (HTL).

[0075] like Figure 3 As shown, optionally, the orthographic projections of the plurality of light-emitting units 410 on the substrate 100 are located within the orthographic projection of the same touch electrode 610 on the substrate 100 , that is, one touch electrode 610 is covered with the plurality of light-emitting units 410 .

[0076] In some optional embodiments, the display panel 10 further includes a first insulating layer 700 , which is located between the touch layer 600 and the first electrode layer 500 , and the orthographic projection of the touch layer 600 on the substrate 100 is located within the orthographic projection of the first insulating layer 700 on the substrate 100 .

[0077] In these optional embodiments, a first insulating layer 700 is disposed between the touch layer 600 and the first electrode layer 500 to insulate the touch layer 600 from the first electrode layer 500, thereby reducing the risk of short circuit between the touch layer 600 and the first electrode layer 500. The orthographic projection of the touch layer 600 on the substrate 100 is located within the orthographic projection of the first insulating layer 700 on the substrate 100, that is, the touch layer 600 is completely covered by the first insulating layer 700, further reducing the possibility of contact between the touch layer 600 and the first electrode layer 500.

[0078] Optionally, the material of the first insulating layer 700 includes a light-transmitting material. When the material of the first insulating layer 700 includes a light-transmitting material, the light emitted by the light-emitting unit 410 can pass through the first insulating layer 700 to reach the light-emitting surface of the display panel 10, reducing the influence of the first insulating layer 700 on the light emission of the light-emitting unit 410.

[0079] See also Figure 6 , Figure 6 is a partial cross-sectional view of a display panel in yet another embodiment.

[0080] like Figure 6As shown, in some optional embodiments, the display panel 10 further includes a second insulating layer 800 , which is located on the side of the touch layer 600 facing away from the substrate 100 , and the orthographic projection of the touch layer 600 on the substrate 100 is located within the orthographic projection of the second insulating layer 800 on the substrate 100 .

[0081] In these optional embodiments, a first insulating layer 700 is disposed on the side of the touch layer 600 facing away from the substrate 100 to insulate the touch layer 600 from the film layer on the side of the touch layer 600 facing away from the substrate 100, thereby reducing the risk of short circuit between the touch layer 600 and the film layer on the side of the touch layer 600 facing away from the substrate 100. The orthographic projection of the touch layer 600 on the substrate 100 is within the orthographic projection of the second insulating layer 800 on the substrate 100, that is, the touch layer 600 is completely covered by the second insulating layer 800, further reducing the possibility of contact between the touch layer 600 and the film layer on the side of the touch layer 600 facing away from the substrate 100.

[0082] Optionally, the material of the second insulating layer 800 includes a light-transmitting material. When the material of the second insulating layer 800 includes a light-transmitting material, the light emitted by the light-emitting unit 410 can pass through the second insulating layer 800 to reach the light-emitting surface of the display panel 10, reducing the influence of the second insulating layer 800 on the light emission of the light-emitting unit 410.

[0083] Optionally, the material of the touch wiring 620 includes a light-transmitting material. For example, the materials of the touch wiring 620 and the touch electrode 610 both include an ITO material.

[0084] See also Figure 7 and Figure 8 , Figure 7 is a partial cross-sectional view of a display panel in yet another embodiment; Figure 8 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0085] like Figure 7 and Figure 8 As shown, in some optional embodiments, a second hollow portion 612 is disposed on the touch electrode 610 , and the orthographic projection of at least part of the second hollow portion 612 on the substrate 100 overlaps with the orthographic projection of the isolation structure 300 on the substrate 100 .

[0086] In these optional embodiments, the touch electrode 610 is provided with a second hollow portion 612 at the location of the isolation structure 300, so that part of the isolation structure 300 is exposed from the second hollow portion 612, thereby reducing the distribution of the touch electrode 610 at the location of the isolation structure 300. Since the isolation structure 300 is difficult to shield the influence of the noise of the substrate 100 on the touch electrode 610, reducing the distribution of the touch electrode 610 at the location of the isolation structure 300 can reduce the influence of the electric field and magnetic field of the substrate 100 on the touch electrode 610, thereby improving the touch performance of the touch electrode 610.

[0087] Please also read Fig. 9 and Fig.10 , Fig. 9 is a partial cross-sectional view of a display panel in yet another embodiment; Fig.10 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0088] like Fig. 9 and Fig.10 As shown, optionally, a first hollow portion 611 and a second hollow portion 612 are provided on the touch electrode 610, which can not only reduce the light blocking of the light-emitting unit 410, but also reduce the influence of the electric field and magnetic field of the substrate 100 on the touch electrode 610, thereby improving the touch performance and display effect of the display panel 10.

[0089] See also Fig.11 and Fig.12 , Fig.11 is a partial top view of a display panel in yet another embodiment; Fig.12 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0090] like Fig.11 and Fig.12 As shown, in some optional embodiments, the touch electrodes 610 are arranged at intervals along the first direction X, the touch traces 620 are arranged at intervals along the second direction Y, and at least part of the touch traces 620 are extended along the first direction X, one side of the touch electrode 610 in the second direction Y is electrically connected to the touch traces 620, and the first direction X and the second direction Y intersect.

[0091] In these optional embodiments, when the touch electrodes 610 are arranged at intervals in the first direction X, the touch traces 620 are located on one side of the touch electrodes 610 in the second direction Y and are electrically connected to the touch electrodes 610, and the touch traces 620 are all located on the same side of the touch electrodes 610, which facilitates the wiring of the touch traces 620. The touch traces 620 are arranged at intervals from each other and are all extended along the first direction X, which can reduce the risk of short circuits between touch traces.

[0092] Optional, such as Fig.11As shown, the touch electrodes 610 have the same size and are aligned along the first direction X. The touch electrodes 610 have the same size and are aligned, have consistent size and regular arrangement, which facilitates the preparation of the touch electrodes 610 and can improve the touch uniformity of the display panel 10 .

[0093] like Fig.12 As shown, in some optional embodiments, the size of the touch electrodes 610 gradually decreases along the first direction X, and each touch electrode 610 is aligned along the first direction X on one side of the second direction Y.

[0094] In these optional embodiments, the touch electrodes 610 are gradually reduced in size along the first direction X and are aligned on one side in the second direction Y. Except for the touch electrode 610 with the largest size, the other electrodes have a certain clearance space relative to the largest touch electrode 610 in the second direction Y. The touch wiring 620 is arranged in the clearance space, and the wiring space of the touch wiring 620 is increased, which facilitates the wiring of the touch wiring 620.

[0095] Optionally, the display panel 10 further includes an integrated circuit, which is located on one side of the touch electrode 610 in the first direction X. The touch trace 620 is electrically connected to the integrated circuit to realize control of the touch electrode 610 by the integrated circuit.

[0096] When the size of the touch electrodes 610 is the same, the greater the distance between the touch electrodes 610 and the integrated circuit, the longer the length of the touch trace 620 corresponding to the touch electrodes 610 is, and the greater the resistance is. When the size of the touch electrodes 610 gradually decreases along the first direction X, for example, the size of the touch electrodes 610 gradually decreases along the direction toward the integrated circuit, when the size of the touch electrodes 610 decreases, the corresponding capacitance gradually decreases. Optionally, the farther the touch electrodes 610 are from the integrated circuit, the smaller the corresponding effective area is.

[0097] The effective area corresponding to the touch electrode 610 refers to the area of ​​the touch electrode 610 excluding the first hollow portion 611 and the second hollow portion 612 when the touch electrode 610 includes the first hollow portion 611 and / or the second hollow portion 612 , that is, the effective area corresponding to the touch electrode 610 .

[0098] In these optional embodiments, the longer the touch trace 620 corresponding to the touch electrode 610 is, the smaller the effective area corresponding to the touch electrode 610 is set. The smaller the effective area of ​​the touch electrode 610 is, the smaller the capacitance corresponding to it is. That is, the greater the resistance of the touch electrode 610 is, the smaller its capacitance is. This makes the charging and discharging time of each touch electrode 610 tend to be consistent, thereby improving the touch performance of the display panel 10.

[0099] Optionally, the isolation structure 300 also includes a second layer 320 located on the side of the first conductive layer 310 away from the substrate 100, the first conductive layer 310 and the second layer 320 are stacked along the thickness direction Z, and the orthographic projection of the first conductive layer 310 on the substrate 100 is located within the orthographic projection of the second layer 320 on the substrate 100.

[0100] In these optional embodiments, the first conductive layer 310 and the second layer 320 are arranged to form an isolation structure 300, the orthographic projection of the first conductive layer 310 arranged near the substrate 100 on the substrate 100 is located within the orthographic projection of the second layer 320 on the substrate 100, the area of ​​the second layer 320 is larger than the area of ​​the first conductive layer 310, and the second layer 320 covers the surface of the first conductive layer 310 near the second layer 320, and at this time, the first conductive layer 310 is recessed relative to the second layer 320 in a direction away from the pixel opening 220. When preparing the light-emitting layer 400 and the first electrode layer 500, a large drop is generated between the first electrode layer 500 and the light-emitting layer 400 at the edge of the isolation structure 300, and the first conductive layer 310 is recessed relative to the second layer 320, and the first electrode layer 500 and the light-emitting layer 400 are difficult to connect at the edge of the isolation structure 300, so they are broken, and the first electrode layer 500 is broken to form mutually spaced first electrodes 510, and the light-emitting layer 400 is broken to form mutually disconnected light-emitting units 410.

[0101] Optionally, the isolation structure 300 extends in a grid shape along the first direction X and the second direction Y, and the first direction X and the second direction Y intersect.

[0102] The isolation structure 300 is in a grid shape, which means that the isolation structure 300 extends in the first direction X and the second direction Y, and the portion extending in the first direction X and the portion extending in the second direction Y are cross-connected to each other to form a plurality of grid spaces, and the light-emitting unit 410, the pixel opening 220 and the pixel defining portion 210 are located in the grid space, so that the isolation structure 300 surrounds the light-emitting unit 410.

[0103] In these optional embodiments, the isolation structure 300 extends in a grid shape along the first direction X and the second direction Y, so that the first electrode layer 500 and the light-emitting layer 400 are separated by the isolation structure 300 in both the first direction X and the second direction Y.

[0104] Optionally, the isolation structure 300 and the pixel opening 220 are arranged at equal intervals.

[0105] The equal spacing arrangement means that the minimum distance between each point on the surface of the isolation structure 300 close to the pixel opening 220 and the pixel opening 220 on any cross section of a reference plane parallel to the substrate 100 is equal.

[0106] In these optional embodiments, the equal spacing makes the isolation structure 300 arranged regularly, which not only separates the first electrode layer 500 and the light-emitting layer 400 at the position of the isolation structure 300, but also makes the area distribution of the first electrode 510 and the light-emitting unit 410 more regular, thereby ensuring the uniformity of light emission from the light-emitting unit 410.

[0107] The structural design in this embodiment can be applied to other display panels 10 , and the specific selection can be made according to actual conditions, and this application does not impose any specific restrictions on it.

[0108] The embodiment of the second aspect of the present application also provides a display device, including the display panel 10 of any of the above-mentioned first aspect embodiments. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel 10 of any of the above-mentioned first aspect embodiments, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel 10 of any of the above-mentioned first aspect embodiments, which will not be repeated here.

[0109] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0110] See also Figures 13 to 16 , Fig.13 It is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application; Figures 14 to 16 It is a schematic diagram of the preparation process of a method for preparing a display panel provided in an embodiment of the present application.

[0111] The third aspect of the present application also provides a method for preparing a display panel 10. The display panel 10 may be any of the display panels 10 provided in the first aspect of the present application. Figures 1 to 12 , the preparation method comprises:

[0112] Step S01: preparing an isolation structure on a substrate, wherein the isolation structure includes a first conductive layer.

[0113] like Fig.14 As shown, the isolation structure 300 includes a second layer 320 and a first conductive layer 310 stacked along the thickness direction Z. The second layer 320 and the first conductive layer 310 can be dry-etched first, and then the first conductive layer 310 can be wet-etched. The etching rate of the first conductive layer 310 is greater than that of the second layer 320. Therefore, the first conductive layer 310 will be recessed inward relative to the edge of the second layer 320, thereby forming the isolation structure 300.

[0114] Step S02: preparing a first electrode layer on a substrate with an isolation structure, wherein the first electrode layer includes first electrodes spaced apart from each other, and the first electrodes are electrically connected to the first conductive layer.

[0115] like Fig.15 As shown, since the first conductive layer 310 is concavely arranged relative to the second layer 320, the first electrode layer 500 can be prepared using the isolation structure 300 as a mask. After the first electrode material is deposited, the first electrode material is disconnected at the edge of the isolation structure 300, thereby forming the first electrode layer 500. The first electrode layer 500 includes first electrodes 510 spaced apart from each other.

[0116] Step S03: preparing a touch layer on the side of the first electrode layer facing away from the substrate, the touch layer comprising touch electrodes distributed at intervals, and at least part of the touch electrodes have orthographic projections on the substrate located within the orthographic projections of the first electrode on the substrate.

[0117] According to the preparation method of the third aspect of the present application, an isolation structure 300 is prepared on a substrate 100 through step S01. Then, a first electrode layer 500 is prepared through step S02. The isolation structure 300 is disposed on the substrate 100. When the first electrode layer 500 is prepared on the substrate 100, the first electrode layer 500 is disconnected at the location of the isolation structure 300, thereby forming mutually spaced first electrodes 510. The first electrode 510 is electrically connected to the first conductive layer 310 of the isolation structure 300, so that each first electrode 510 is electrically connected to each other through the first conductive layer 310 to form a full-surface electrode. Fig.16 As shown, finally, step S03 is used to prepare a touch layer 600, and the touch layer 600 includes touch electrodes 610 distributed at intervals to realize the touch function of the display panel 10. At least part of the orthographic projection of the touch electrodes 610 on the substrate 100 is located within the orthographic projection of the first electrode 510 on the substrate 100, and at least part of the touch electrodes 610 is located on the side of the first electrode 510 away from the substrate 100. The first electrode 510 between the part of the touch electrodes 610 and the substrate 100 can serve as a shielding layer for the touch electrodes 610 to reduce the mutual influence of the electric field and the magnetic field between the touch electrodes 610 and the substrate 100, and improve the adverse effect of the noise of the substrate 100 on the touch electrodes 610.

[0118] In some optional embodiments, step S03 includes:

[0119] A touch material layer is prepared on the side of the first electrode layer 500 facing away from the substrate 100 , and the touch material layer is patterned to obtain mutually electrically connected touch electrodes 610 and touch traces 620 .

[0120] In these optional embodiments, the touch electrodes 610 and the touch wirings 620 are provided in the same layer and with the same material. After the touch material layer is prepared, patterning treatment is performed to simultaneously obtain the touch electrodes 610 and the touch wirings 620. The touch electrodes 610 and the touch wirings 620 are prepared synchronously, thus simplifying the preparation process.

[0121] According to the embodiments described above in the present application, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; An isolation structure, located on the substrate, wherein the isolation structure comprises a first conductive layer; A first electrode layer, located on the substrate, the first electrode layer includes first electrodes spaced apart from each other, and the first electrodes are electrically connected to the first conductive layer; The touch layer is located on a side of the first electrode layer away from the substrate, the touch layer comprises touch electrodes distributed at intervals, and at least part of the touch electrodes have orthographic projections on the substrate located within the orthographic projections of the first electrode on the substrate.

2. The display panel according to claim 1, characterized in that: The touch layer further includes touch traces electrically connected to the touch electrodes, and at least a portion of the orthographic projections of the touch traces on the substrate are located within the orthographic projections of the first electrodes on the substrate.

3. The display panel according to claim 2, characterized in that: The touch electrodes and the touch wirings are arranged on the same layer.

4. The display panel according to claim 2, characterized in that: The display panel further includes: a light-emitting layer located on the substrate, the light-emitting layer comprising light-emitting units distributed at intervals, a first hollow portion being provided on the touch electrode, and at least part of the light-emitting units being projected onto the substrate within the first hollow portion; Alternatively, the touch electrode is made of a light-transmitting material; Preferably, the display panel further comprises a pixel definition layer, the pixel definition layer is located on the substrate, the pixel definition layer comprises a pixel definition portion and a pixel opening formed by the pixel definition portion, and at least part of the light emitting unit is located in the pixel opening; Preferably, the orthographic projection of the light-emitting unit at least partially located in the pixel opening on the substrate is located within the orthographic projection of the first hollow portion on the substrate.

5. The display panel according to claim 4, characterized in that: The display panel further includes: A first insulating layer, located between the touch layer and the first electrode layer, wherein the orthographic projection of the touch layer on the substrate is located within the orthographic projection of the first insulating layer on the substrate; Preferably, the first insulating layer is made of light-transmitting material.

6. The display panel according to claim 4, characterized in that: The display panel further includes: A second insulating layer is located on a side of the touch layer away from the substrate, and an orthographic projection of the touch layer on the substrate is located within the orthographic projection of the second insulating layer on the substrate; Preferably, the second insulating layer is made of light-transmitting material.

7. The display panel according to claim 2, characterized in that: The touch electrodes are arranged at intervals along a first direction, the touch traces are arranged at intervals along a second direction, and at least a portion of the touch traces are extended along the first direction, one side of the touch electrodes in the second direction is electrically connected to the touch traces, and the first direction and the second direction intersect; Preferably, the touch electrodes have the same size and are aligned along the first direction; Preferably, the size of the touch electrodes gradually decreases along the first direction, and the touch electrodes are aligned along the first direction on one side of the second direction.

8. The display panel according to claim 1, characterized in that: A second hollow portion is disposed on the touch electrode, and at least a portion of the second hollow portion is overlapped with the orthographic projection of the isolation structure on the substrate when projected on the substrate.

9. A display device, characterized in that: A display panel comprising any one of claims 1 to 8.

10. A method for preparing a display panel, characterized in that: include: preparing an isolation structure on a substrate, the isolation structure comprising a first conductive layer; Preparing a first electrode layer on the substrate with the isolation structure, wherein the first electrode layer includes first electrodes spaced apart from each other, and the first electrodes are electrically connected to the first conductive layer; A touch layer is prepared on the side of the first electrode layer facing away from the substrate. The touch layer includes touch electrodes distributed at intervals. At least part of the touch electrodes are projected within the orthographic projection of the first electrode on the substrate.

Images