Touch display panel, preparation method for touch display panel, and display device

Abstract

The present application provides a touch display panel, a preparation method for the touch display panel, and a display device. The touch display panel comprises: a substrate, a light-emitting layer, a plurality of isolation structures and a time-sharing control module, wherein the light-emitting layer is disposed on one side of the substrate and comprises a plurality of light-emitting portions, and the light-emitting portions are provided with first electrodes on the side away from the substrate; the plurality of isolation structures are spaced apart on one side of the substrate, and the isolation structures define a plurality of isolation openings; the light-emitting portions are disposed in the isolation openings, adjacent light-emitting portions are separated by the isolation structures, and the first electrodes are electrically connected to the isolation structures; and the time-sharing control module is electrically connected to each isolation structure and is used for time-sharing control of the corresponding isolation structure to receive a touch signal or a power supply signal. Thus, the touch function of the touch display panel can be achieved without additionally providing a separate touch electrode film layer, thereby reducing the thickness of the touch display panel while reducing preparation costs.

Description

Touch display panel, method for manufacturing touch display panel, and display device Technical Field

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

[0002] Background of the Invention

[0003] With the development of touch technology and display technology, touch display panels are becoming more and more popular. Taking common touch-screen smart mobile terminals as an example, their increasingly high screen-to-body ratio design brings users a more extreme visual experience than ever before.

[0004] At the same time, the thinness and lightness of touch display panels are attracting more and more attention.

[0005] Summary of the Invention

[0006] In view of this, the present application is dedicated to providing a touch display panel, a method for manufacturing a touch display panel, and a display device, which can effectively reduce the thickness of the stacked layers.

[0007] In a first aspect, the present application provides a touch display panel, comprising:

[0008] substrate;

[0009] a light-emitting layer, disposed on one side of the substrate, comprising a plurality of light-emitting portions, each light-emitting portion having a first electrode on a side away from the substrate;

[0010] a plurality of isolation structures, spaced apart on one side of the substrate, the isolation structures defining a plurality of isolation openings, the light-emitting portions being disposed within the isolation openings, adjacent light-emitting portions being separated by isolation structures, and the first electrode being electrically connected to the isolation structures;

[0011] The time-sharing control module is electrically connected to each of the isolation structures and is used for time-sharingly controlling the corresponding isolation structure to receive a touch signal or a power signal.

[0012] In a second aspect, the present application further provides a touch display panel, comprising:

[0013] substrate;

[0014] a light-emitting layer, disposed on one side of the substrate, comprising a plurality of light-emitting portions, each light-emitting portion having a first electrode on a side away from the substrate;

[0015] a plurality of isolation structures, spaced apart on one side of the substrate, the isolation structures defining a plurality of isolation openings, the light-emitting portions being disposed within the isolation openings, adjacent light-emitting portions being separated by isolation structures, and the first electrode being electrically connected to the isolation structures;

[0016] The isolation structure is used to receive a touch signal or a power signal.

[0017] In a third aspect, the present application further provides a method for preparing a touch display panel, comprising:

[0018] providing a substrate;

[0019] forming an isolation material layer on the substrate;

[0020] The isolation material layer is patterned to form a plurality of isolation structures spaced apart from each other; the isolation structures define a plurality of isolation openings; and the isolation structures are electrically connected to a time-sharing control module of the touch display panel;

[0021] A first electrode of the light emitting portion is formed in the isolation opening; the first electrode is electrically connected to the isolation structure.

[0022] In a fourth aspect, the present application further provides a display device, comprising the touch display panel as described in the first aspect or the second aspect of the present application.

[0023] In the solution of the present application, the touch display panel includes a substrate, a light-emitting layer, multiple isolation structures, and a time-sharing control module. The light-emitting layer is disposed on one side of the substrate and includes multiple light-emitting portions, each having a first electrode away from one side of the substrate. Multiple isolation structures are spaced apart on one side of the substrate, with the isolation structures defining multiple isolation openings. The light-emitting portions are disposed within the isolation openings, with adjacent light-emitting portions separated by isolation structures, and the first electrode is electrically connected to the isolation structures. The time-sharing control module is electrically connected to each isolation structure and is used to time-share control the corresponding isolation structure to receive touch signals or power signals. In this way, the touch function of the touch display panel can be realized without the need for an additional separate touch electrode film layer, thereby reducing the manufacturing cost and the thickness of the touch display panel.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other purposes, features, and advantages of the present application will become more apparent through a more detailed description of the embodiments of the present application in conjunction with the accompanying drawings. The accompanying drawings are intended to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0026] FIG1 is a schematic diagram of a planar structure of a touch display panel provided in one embodiment of the present application;

[0027] FIG2 is a schematic diagram of a cross-sectional structure of the touch display panel shown in FIG1 along cutting line AA′;

[0028] FIG3 is a schematic structural diagram of a touch display panel provided by another embodiment of the present application;

[0029] FIG4 is a schematic structural diagram of a touch display panel provided by another embodiment of the present application;

[0030] FIG5 is a schematic structural diagram of a touch display panel provided by another embodiment of the present application;

[0031] FIG6 is a schematic structural diagram of a touch display panel provided by another embodiment of the present application;

[0032] FIG7 is a schematic structural diagram of a touch display panel provided by another embodiment of the present application;

[0033] FIG8 is a schematic structural diagram of a touch display panel provided by another embodiment of the present application;

[0034] FIG9 is a schematic structural diagram of a touch display panel provided by another embodiment of the present application;

[0035] FIG10 is a schematic diagram of a planar structure of a touch display panel provided in another embodiment of the present application;

[0036] FIG11 is a schematic diagram of the cross-sectional structure of the touch display panel shown in FIG10 along the cutting line BB′;

[0037] FIG12 is a schematic structural diagram of a touch display panel provided by another embodiment of the present application;

[0038] FIG13 is a schematic flow chart of a method for manufacturing a touch display panel according to an embodiment of the present application;

[0039] FIG14 is a schematic structural diagram of a display device provided in one embodiment of the present application.

[0040] Modes for Carrying Out the Invention

[0041] Unless otherwise defined, technical or scientific terms used in the embodiments of this specification should have the same ordinary meaning as those understood by persons of ordinary skill in the art to which this specification pertains. The terms "first," "second," and similar terms used in the embodiments of this specification do not denote any order, quantity, or importance, but are provided solely to avoid confusion between constituent elements.

[0042] Unless the context requires otherwise, throughout this specification, the term "plurality" means "at least two," and "including" is to be interpreted as open and inclusive, meaning "including, but not limited to." Throughout this specification, the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of this specification. The schematic representations of these terms do not necessarily refer to the same embodiment or example.

[0043] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this specification.

[0044] With the rapid development of display technology, touch display panels have broad application potential in automotive, mobile phones, tablets, computers, televisions, and other fields. Touch function has become a standard feature of most display panels, and capacitive touch display panels are the most widely used.

[0045] Capacitive touch displays primarily include capacitive touch displays and self-capacitive touch displays. Self-capacitive touch displays are a touch technology based on capacitive sensing principles, using the conduction of current across the surface of the touch display panel to detect touch locations. Self-capacitive touch displays are typically suitable for single-point touch or a small number of simultaneous touches.

[0046] Currently, an in-cell touch solution is often used with an organic light emitting diode (OLED) display panel. However, the manufacturing cost and stacking thickness of the in-cell touch display panel still need to be reduced.

[0047] To this end, the present application provides a solution that can effectively reduce the stacking thickness of the touch display panel. A plurality of isolation openings are defined by an isolation structure, and a plurality of first electrodes of the light-emitting parts are respectively arranged in the plurality of isolation openings. The plurality of first electrodes are then electrically connected together using the isolation structure to form an electrode structure. By arranging a plurality of isolation structures at intervals on the substrate, the isolation structure and the first electrodes electrically connected thereto can be reused as touch electrodes. At the same time, a time-sharing control module is used to electrically connect to each isolation structure so as to control the corresponding isolation structure to receive a touch signal or a power signal through the time-sharing control module. In this way, while realizing the touch function, there is no need to add a separate touch electrode film layer, thereby reducing the preparation cost and the thickness of the touch display panel.

[0048] Specifically, as an optional implementation of the disclosed content of this application, an embodiment of this application provides a touch display panel. Figure 1 is a schematic diagram of the planar structure of a touch display panel provided in one embodiment of this application. Figure 2 is a schematic diagram of the cross-sectional structure of the touch display panel shown in Figure 1 along cutting line AA′. Figure 3 is a schematic diagram of the structural connection relationship of a touch display panel provided in one embodiment of this application. As shown in Figures 1, 2, and 3, the touch display panel may include at least: a substrate 10, a light-emitting layer 30, multiple isolation structures 21, and a time-sharing control module F.

[0049] The substrate 10 primarily serves as a support and bearing. Specifically, the substrate 10 can be a rigid substrate such as a glass substrate or a silicon substrate, or a flexible substrate such as stainless steel (SUS) or flexible polyimide (PI). In other words, the touch display panel in the embodiment of the present application can be a rigid, non-flexible display panel or a flexible, flexible display panel.

[0050] The light emitting layer 30 is provided on one side of the substrate 10 and includes a plurality of light emitting portions 30A. The light emitting portion 30A has a first electrode 301 on a side away from the substrate 10 .

[0051] The isolation structure 21 is disposed at intervals on one side of the substrate 10 , defining a plurality of isolation openings K. The light emitting portions 30A are disposed in the isolation openings K, and adjacent light emitting portions 30A are separated by the isolation structure 21 . The first electrode 301 is electrically connected to the isolation structure 21 .

[0052] The first electrode 301 may be a cathode.

[0053] Multiple first electrodes 301 are located in multiple isolation openings K, and the isolation structure 21 is electrically connected to the multiple first electrodes 301. It can be seen that the isolation structure 21 electrically connects the multiple first electrodes 301 together, so that each isolation structure 21 and the first electrode 301 electrically connected thereto can serve as an independent electrode structure, providing a structural basis for its reuse as a touch electrode.

[0054] During implementation, each isolation structure 21 and the first electrode 301 electrically connected thereto are reused as a touch electrode. Thus, multiple isolation structures 21 spaced apart on the substrate 10 and the first electrodes 301 electrically connected thereto, i.e., multiple touch electrodes spaced apart on the substrate 10, can implement a self-capacitive touch display of a touch display panel.

[0055] At the same time, by reusing the isolation structure 21 and the first electrode 301 electrically connected thereto as a touch electrode, it is possible to avoid preparing a separate touch electrode layer, thereby reducing the stacking thickness of the touch display panel, saving the number of masks, and lowering the preparation cost.

[0056] International application number PCT / CN2023 / 134518 and Chinese patent applications number 202310759370.2, 202310740412.8, 202310707209.0, and 202311346196.5 record relevant technologies of isolation structures, and their contents are incorporated into this application by reference for reference.

[0057] As shown in FIG3 , the time-sharing control module F is electrically connected to each isolation structure 21 and is used to control the corresponding isolation structure 21 to receive the touch signal or power signal in a time-sharing manner.

[0058] It should be understood that, since the first electrode 301 may be a cathode, the power supply signal may be a cathode signal accordingly.

[0059] The time-sharing control module F is used to time-share control the corresponding isolation structure 21 to receive the touch signal or power signal. That is, the time-sharing control module F can be used to realize the switching of the touch function and display function of the touch display panel, which not only ensures the realization of the display and touch functions of the touch display panel, but also reduces the preparation cost.

[0060] When used, multiple isolation structures 21 can be arranged in an array on the substrate 10 to make the touch electrodes more evenly distributed, avoiding touch failure or poor touch effect in some touch display areas due to sparse distribution of touch electrodes.

[0061] In order to ensure the separate realization of the touch function and display function of the touch display panel, in some embodiments, as shown in Figures 4 and 5, the substrate 10 may include a driving circuit layer 101, and the driving circuit layer 101 includes a plurality of pixel driving circuits 1011. The power signal end of the pixel driving circuit 1011 is electrically connected to the isolation structure 21 controlled by the time-sharing control module F, so that the time-sharing control module F applies a power signal to the first electrode 301.

[0062] Specifically, as shown in Figure 5, the power signal end of the pixel driving circuit 1011 is electrically connected to the isolation structure 21 controlled by the time-sharing control module F through the time-sharing control module F, and is used to provide a power signal to the time-sharing control module F so that the time-sharing control module F transmits the power signal to the corresponding isolation structure 21.

[0063] In some embodiments, as shown in FIG6 , the time-sharing control module F may include multiple selection circuits 40. The power signal terminal of the pixel driving circuit 1011 is electrically connected to the isolation structure 21 controlled by the selection circuit 40 through the selection circuit 40, so that the selection circuit 40 provides a power signal to the first electrode 301.

[0064] In this way, when the first electrode 301 receives the power signal, the first electrode 301 cooperates with other structures of the light-emitting portion 30A to realize the display function of the touch display panel.

[0065] In some embodiments, as shown in FIG6 , the time-sharing control module F may further include a control chip 50 . The control chip 50 is configured to provide a touch signal to the corresponding selection circuit 40 , so that the selection circuit 40 provides the touch signal to the first electrode 301 .

[0066] In this way, when the first electrode 301 receives a touch signal, the first electrode 301 and the isolation structure 21 electrically connected thereto can serve as touch electrodes to implement the touch function of the touch display panel.

[0067] In application, the control chip 50 may also be electrically connected to the light-emitting portion 30A via the pixel driving circuit 1011 , so that the pixel driving circuit 1011 applies a driving signal to the light-emitting portion 30A.

[0068] During implementation, the pixel driving circuit 1011 is selected from a 2T1C structure, a 7T1C structure, a 6T1C structure, and a 3T1C structure, where T represents a transistor and C represents a capacitor.

[0069] Similarly, since the multiple isolation structures 21 and the first electrodes 301 electrically connected thereto can serve as multiple touch electrodes to realize the touch function, and can also serve as the first electrodes 301 of the multiple light-emitting portions 30A to cooperate in realizing the display function, and when serving as touch electrodes and as the first electrodes 301, the touch signals and power signals received are not the same signals, therefore, in order to avoid mutual interference between touch and display, in some embodiments, the control timing of the control chip 50 may include a touch timing segment and a display timing segment.

[0070] The touch timing segment and the display timing segment are non-overlapping timing segments.

[0071] Specifically, the selection circuit 40 is used to transmit the touch signal provided by the control chip 50 to the isolation structure 21 correspondingly connected to the selection circuit 40 during the touch timing period, and to transmit the power signal provided by the pixel driving circuit 1011 to the isolation structure 21 correspondingly connected to the selection circuit during the display timing period.

[0072] Thus, during the touch timing period, the multiple isolation structures 21 only receive the touch signal provided by the selection circuit 40, thereby providing a touch structure for implementing the touch function. During the display timing period, the multiple isolation structures 21 only receive the power signal provided by the pixel driving circuit 1011, that is, the first electrode 301 only receives the power signal, ensuring that the first electrode 301 performs the cathode function, thereby providing a display structure for implementing the display function. The touch timing period and the display timing period are executed separately, ensuring the separate implementation of the touch and display functions, avoiding interference between the touch and display implementations, and ensuring the touch and display effects.

[0073] In order to ensure that the selection circuit 40 can provide a touch signal in the touch timing segment and a power signal in the display timing segment, in some embodiments, as shown in Figure 7, the selection circuit 40 may include a first input terminal 401, a second input terminal 402 and an output terminal 403, and the control chip 50 controls the conduction of the first input terminal 401, the second input terminal 402 and the output terminal 403 respectively through the control signal line.

[0074] Specifically, in the touch timing period, the control chip 50 controls the conduction between the first input terminal 401 and the output terminal 403 through the first control signal line S1 , and provides a touch signal through the first connection line 501 .

[0075] During the display timing period, the control chip 50 controls the conduction between the second input terminal 402 and the output terminal 403 through the second control signal line S2 , and provides a power signal through the second connection line 502 .

[0076] The first input terminal 401 is connected to the control chip 50 through the first connection line 501, and the control chip 50 provides a touch signal; the second input terminal 402 is connected to the pixel driving circuit 1011 through the second connection line 502, and the pixel driving circuit 1011 provides a power signal; the output terminal 403 is connected to the isolation structure 21 correspondingly connected to the selection circuit 40.

[0077] The driver chip 50 can be specifically configured to provide a touch signal via the first connection line 501 during a touch timing period.

[0078] The pixel driving circuit 1011 may be specifically configured to provide a power signal via the second connection line 502 during a display timing period.

[0079] The selection circuit 40 can be specifically used to, during the touch timing period, connect the first input terminal 401 and the output terminal 403 so that the touch signal is output to the corresponding isolation structure 21 through the output terminal 403, and during the display timing period, connect the second input terminal 402 and the output terminal 403 so that the power signal is output to the corresponding isolation structure 21 through the output terminal 403.

[0080] To better achieve conduction and blocking between the first input terminal 401 and the output terminal 403, and between the second input terminal 402 and the output terminal 403, in some embodiments, as shown in FIG7 , the selection circuit 40 may further include a first switch unit 404 and a second switch unit 405. The first input terminal 401 is connected to the output terminal 403 via the first switch unit 404, and the first control signal line S1 is connected to the control terminal of the first switch unit 404; the second input terminal 402 is connected to the output terminal 403 via the second switch unit 405, and the second control signal line S2 is connected to the control terminal of the second switch unit 405.

[0081] In a specific implementation, the first switch unit 404 may include a first transistor T1, and the second switch unit 405 may include a second transistor T2. The first input terminal 401 is connected to the output terminal 503 via the first transistor T1, and the second input terminal 402 is connected to the output terminal 503 via the second transistor T2. The first control signal line S1 is connected to the control terminal of the first transistor T1, and the second control signal line S2 is connected to the control terminal of the second transistor T2.

[0082] The first transistor T1 is used to be turned on and off under the control of a first control signal provided by a first control signal line S1 , and the second transistor T2 is used to be turned on and off under the control of a second control signal provided by a second control signal line S2 .

[0083] Specifically, as shown in FIG7 , the control terminal of the first transistor T1 is connected to the first control signal line S1, the first electrode of the first transistor T1 is connected to the first input terminal 401, and the second electrode of the first transistor T1 is connected to the output terminal 403. Similarly, the control terminal of the second transistor T2 is connected to the second control signal line S2, the first electrode of the second transistor T2 is connected to the second input terminal 402, and the second electrode of the second transistor T2 is connected to the output terminal 403.

[0084] For example, the first transistor T1 and the second transistor T2 can both be N-type transistors. When the first control signal and the second control signal are both high-level signals, the first transistor T1 and the second transistor T2 are both in the on state, that is, the first electrode and the second electrode of the first transistor T1 are conductive, and the first electrode and the second electrode of the second transistor T2 are conductive. When the first control signal and the second control signal are both low-level signals, the first transistor T1 and the second transistor T2 are both in the off state, that is, the first electrode and the second electrode of the first transistor T1 are disconnected, and the first electrode and the second electrode of the second transistor T2 are disconnected. In this way, the first control signal and the second control signal can be used to control the on and off of the first transistor T1 and the second transistor T2, thereby realizing output switching of the selection circuit 40 between the first input terminal 401 and the output terminal 403, and between the second input terminal 402 and the output terminal 403.

[0085] On the other hand, in order to avoid switching between the touch function and the display function from affecting the display effect of the touch display panel, in some embodiments, a frame of the touch display panel may include a display period and a black insertion period.

[0086] The display timing segment may include a display time period; the touch timing segment may include a blackout time period; and the duration of the display time period is greater than the duration of the blackout time period.

[0087] That is to say, during the black insertion time period, the selection circuit 40 responds to the first control signal, so that the control chip 50 and the multiple isolation structures 21 are connected, so that the multiple isolation structures 21 receive the touch signals output by the control chip 50; during the display time period, the selection circuit 40 responds to the second control signal, so that the pixel driving circuit 1011 and the corresponding isolation structure 21 are connected, so that the isolation structure 21 receives the power signal.

[0088] In this way, the touch function is realized by using the black time period, and the normal light display of the light-emitting part 30A is performed by using the display time period, which can effectively divide the touch and display time, and realize the reuse of the touch electrode by the first electrode 301 of the light-emitting part 30A and the isolation structure 21 electrically connected thereto.

[0089] In some embodiments, as shown in FIG8 , the light-emitting portion 30A may further include a light-emitting functional layer 302 and a second electrode 303. The light-emitting functional layer 302 is located in the isolation opening K, separated by the isolation structure 21, and is located on the side of the first electrode 301 closer to the substrate 10. The second electrode 303 is located on the side of the light-emitting functional layer 302 closer to the substrate 10.

[0090] The light-emitting functional layer 302 may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer stacked in sequence on the side of the second electrode 303 facing away from the substrate 10. The first electrode 301 is provided on the side of the electron injection layer facing away from the substrate 10.

[0091] Among them, the light-emitting functional layer 302 may include a material having electroluminescence (EL) properties (hereinafter referred to as the light-emitting material). The second electrode 303 may also be called an anode, which is used to provide holes to the light-emitting functional layer 302, and the first electrode 301 may be called a cathode, which is used to provide electrons to the light-emitting functional layer 302. The holes provided by the second electrode 303 and the electrons provided by the first electrode 301 can excite the light-emitting material of the light-emitting functional layer 302 to emit light after being recombined in the light-emitting functional layer 302. The hole injection layer and the hole transport layer can be made of a material with high hole mobility, so that the holes generated by the second electrode 303 are better transferred to the light-emitting functional layer 302. Similarly, the electron injection layer and the electron transport layer can be made of a material with high electron mobility, so that the electrons generated by the first electrode 301 are better transferred to the light-emitting functional layer 302.

[0092] In some embodiments, as shown in Figure 8, the touch display panel may further include an insulating layer 60; a plurality of pixel openings R are provided on the insulating layer 60, the pixel openings R expose a portion of the second electrode 303, the pixel openings R are connected to the isolation openings K, and the light-emitting functional layer 302 of the light-emitting portion 30A is located in the pixel openings R.

[0093] During implementation, the isolation structure 21 is located on a side of the insulation layer facing away from the substrate 10 .

[0094] In some other embodiments, an accommodating opening may be further provided on the insulating layer 60, and the isolation structure 21 is located in the accommodating opening of the insulating layer 60; or, the insulating layer 60 may include a plurality of insulating portions arranged at intervals, the insulating portions covering the side edges of the second electrode 303 and being arranged in a ring shape around the side edges of the second electrode 303, and the isolation structure 21 is located in the intervals between adjacent insulating portions.

[0095] The insulating properties of the insulating layer 60 can insulate the second electrode 303 from the isolation structure 21. Furthermore, since the area of ​​the second electrode 303 of the light-emitting portion 30A exposed by the pixel opening R corresponds to the light-emitting area of ​​the light-emitting portion 30A, the pixel opening R of the insulating layer 60 can better define the light-emitting area.

[0096] When applicable, insulating layer 60 may include a pixel definition layer.

[0097] In some embodiments, as shown in FIG9 , the isolation structure 21 may include a blocking portion 211 located on one side of the substrate 10 and a supporting portion 212 located on the side of the blocking portion 211 facing away from the substrate 10 ; the blocking portion 211 is an insulating structure; and the supporting portion 212 is a conductive structure.

[0098] In order to ensure that in the same isolation unit 20, the first electrodes 301 of multiple light-emitting parts 30A are electrically connected through the isolation structure 21, the side of the first electrode 301 can be set to overlap with the support part 212, so as to achieve electrical connection between the first electrodes 301 of the multiple light-emitting parts 30A through the support part 212 of the isolation structure 21.

[0099] With this arrangement, when the light-emitting functional layer 302 of the light-emitting portion 30A is evaporated, the light-emitting functional layer 302 of the adjacent light-emitting portion 30A can be isolated by the isolation structure 21, thereby obtaining independent light-emitting pixels. Furthermore, as shown in FIG7 , the barrier portion 211 on the side of the isolation structure 21 close to the substrate 10 is an insulating structure, which can better insulate the light-emitting functional layers 302 of adjacent light-emitting portions 30A from each other. Specifically, when the insulating barrier portion 211 is provided, even if the light-emitting functional layer 302 of some light-emitting portions 30A contacts the isolation structure 21 during the deposition of the light-emitting functional layer 302, since the barrier portion 211 in contact is an insulating structure, no lateral leakage current will occur, or only a very small lateral leakage current will occur, which will not meet the conditions for causing the adjacent light-emitting portion to also emit light, thereby avoiding the problem of cross-color, thereby improving the display effect of the touch display panel.

[0100] The material of the barrier portion 211 may include organic or inorganic materials, such as inorganic materials such as silicon oxide (SiOx) and silicon nitride (SiNx), or organic materials such as PI. The material can be selected based on actual conditions, as long as the barrier portion 211 has sufficient insulation properties.

[0101] In some embodiments, as shown in FIG9 , the isolation structure 21 may further include a partition portion 213 located on the side of the support portion 212 facing away from the substrate 10 ; the orthographic projection of the support portion 212 on the substrate 10 is located in the orthographic projection of the partition portion 213 on the substrate 10 .

[0102] Specifically, the dimension of the support portion 212 parallel to the substrate 10 is smaller than the dimension of the partition portion 213 parallel to the substrate 10. The partition portion 213 forms a structure similar to an "inverted staircase" relative to the support portion 212. With this arrangement, during the deposition of the light-emitting functional layer 302 and the first electrode 301, the partition portion 213 can block the deposited material, allowing some of the material to adhere to the side of the partition portion 213 facing away from the substrate 10, while the remaining material can reach the interior of the isolation opening K, forming the light-emitting functional layer 302 and the first electrode 301.

[0103] The support portion 212 and the partition portion 213 are independent structures and can be formed through different process steps. The support portion 212 and the partition portion 213 can be made of the same or different materials. However, it is understood that in other embodiments, the support portion 212 and the partition portion 213 can also be an integrated structure.

[0104] In some embodiments, as shown in Figures 10 and 11 , the touch display panel may further include a first encapsulation layer 70. The first encapsulation layer 70 may include a plurality of spaced-apart encapsulation portions. The encapsulation portions are located on the side of the first electrode 301 facing away from the substrate 10. The orthographic projections of the encapsulation portions on the substrate 10 overlap the orthographic projections of the first electrode 301 on the substrate 10. In this way, the encapsulation portions can protect the light-emitting portion 30A from damage.

[0105] When used, the first encapsulation layer can be formed by chemical vapor deposition (CVD), and the material of the first encapsulation layer can be an inorganic material.

[0106] Of course, the present application is not limited thereto, and in some other embodiments, the material of the first encapsulation layer may also be an organic material. Specifically, it can be set according to actual encapsulation requirements and technical needs.

[0107] In some embodiments, as shown in FIG12 , the touch display panel may further include a second encapsulation layer 80 ; the second encapsulation layer 80 is located on a side of the first encapsulation layer 70 facing away from the substrate 10 ; and the orthographic projection of the second encapsulation layer 80 on the substrate 10 covers the substrate 10 .

[0108] The orthographic projection of the second encapsulation layer 80 on the substrate 10 covers the substrate 10 , thereby achieving encapsulation of the touch electrode layer and further encapsulation of the light-emitting portion 30A.

[0109] Furthermore, the second encapsulation layer 80 is used to encapsulate the touch electrode layer and further encapsulate the light-emitting portion 30A, thereby achieving mask sharing. This eliminates the need for an additional mask for encapsulating the touch electrode layer, thereby reducing manufacturing costs.

[0110] Specifically, the material of the second encapsulation layer 80 can be an organic material or an inorganic material. In practice, the second encapsulation layer can be formed by inkjet printing.

[0111] In some embodiments, as still shown in FIG12 , the touch display panel may further include a third encapsulation layer 90 ; the third encapsulation layer 90 is located on the side of the second encapsulation layer 80 facing away from the substrate 10 ; the orthographic projection of the third encapsulation layer 90 on the substrate 10 covers the substrate 10 .

[0112] In practice, the first encapsulation layer 70 and the third encapsulation layer 90 can be made of inorganic materials, and the second encapsulation layer 80 can be made of organic materials. The second encapsulation layer 80 made of organic materials is located between the first encapsulation layer 70 and the third encapsulation layer 90 made of inorganic materials, forming an encapsulation structure that can better isolate water and oxygen, thereby improving the encapsulation effect.

[0113] As another optional implementation of the present disclosure, an embodiment of the present disclosure further provides a touch display panel. Still as shown in FIG2 , the touch display panel may include a substrate 10 , a light-emitting layer 30 , and a plurality of isolation structures 21 .

[0114] The substrate 10 primarily serves as a support and bearing. Specifically, the substrate 10 can be a rigid substrate such as a glass substrate or a silicon substrate, or a flexible substrate such as stainless steel (SUS) or flexible polyimide (PI). In other words, the touch display panel in the embodiment of the present application can be a rigid, non-flexible display panel or a flexible, flexible display panel.

[0115] The light emitting layer 30 is provided on one side of the substrate 10 and includes a plurality of light emitting portions 30A. The light emitting portion 30A has a first electrode 301 on a side away from the substrate 10 .

[0116] The isolation structure 21 is disposed at intervals on one side of the substrate 10 , defining a plurality of isolation openings K. The light emitting portions 30A are disposed in the isolation openings K, and adjacent light emitting portions 30A are separated by the isolation structure 21 . The first electrode 301 is electrically connected to the isolation structure 21 .

[0117] The isolation structure is used to receive a touch signal or a power signal.

[0118] The first electrode 301 may be a cathode.

[0119] Multiple first electrodes 301 are located in multiple isolation openings K, and the isolation structure 21 is electrically connected to the multiple first electrodes 301. It can be seen that the isolation structure 21 electrically connects the multiple first electrodes 301 together, so that each isolation structure 21 and the first electrode 301 electrically connected thereto can serve as an independent electrode structure, providing a structural basis for its reuse as a touch electrode.

[0120] During implementation, each isolation structure 21 and the first electrode 301 electrically connected thereto are reused as a touch electrode. Thus, multiple isolation structures 21 spaced apart on the substrate 10 and the first electrodes 301 electrically connected thereto, i.e., multiple touch electrodes spaced apart on the substrate 10, can implement a self-capacitive touch display of a touch display panel.

[0121] At the same time, by reusing the isolation structure 21 and the first electrode 301 electrically connected thereto as a touch electrode, it is possible to avoid preparing a separate touch electrode layer, thereby reducing the stacking thickness of the touch display panel, saving the number of masks, and lowering the preparation cost.

[0122] In some embodiments, the touch display panel may further include a time-sharing control module, which may be the same as the time-sharing control module described in any of the above embodiments. Furthermore, the touch display panel may further include at least one of an insulating layer, a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer. Similarly, the light-emitting layer, isolation structure, insulating layer, first encapsulation layer, second encapsulation layer, and third encapsulation layer of the touch display panel may also be the same as the mold layer structure described in any of the above embodiments, and will not be further described here.

[0123] As another optional implementation of the disclosure of this application, an embodiment of this application further provides a method for preparing a touch display panel. As shown in FIG13 , the method for preparing a touch display panel may include at least the following steps:

[0124] S1301. Provide substrate.

[0125] S1302 , forming an isolation material layer on the substrate.

[0126] S1303 , patterning the isolation material layer to form a plurality of isolation structures spaced apart; the isolation structures define a plurality of isolation openings; and the isolation openings are connected to the time-sharing control module of the touch display panel.

[0127] S1304 , forming a first electrode of the light-emitting portion in the isolation opening, wherein the first electrode is electrically connected to the isolation structure.

[0128] Specifically, the light-emitting functional layer and the first electrode of the light-emitting portion may be formed in sequence in the isolation opening by evaporation.

[0129] In an embodiment of the present application, a plurality of isolation openings are formed by enclosing an isolation structure, and a plurality of first electrodes of the light-emitting portions are respectively arranged in the plurality of isolation openings, and then the plurality of first electrodes are electrically connected together by using the isolation structure to form an electrode structure. By arranging a plurality of isolation structures at intervals on the substrate, the isolation structures and the first electrodes electrically connected thereto can be reused as touch electrodes. While realizing the touch function, there is no need to add a separate touch electrode film layer, thereby reducing the preparation cost and the thickness of the touch display panel.

[0130] In some embodiments, after forming the first electrode, a first encapsulation layer can be formed on the first electrode, and a second encapsulation layer can be formed on the side of the first encapsulation layer facing away from the substrate. The second encapsulation layer can be used to encapsulate multiple isolation structures. This allows the encapsulation layer for the touch electrodes and the encapsulation layer for the isolation structures to share a common reticle, eliminating the need for a separate reticle for encapsulating the touch electrode layer, further reducing manufacturing costs.

[0131] The structure of each layer of the touch display panel obtained by the preparation method and the corresponding description thereof refer to the corresponding description of the touch display panel described above.

[0132] As an optional implementation of the present disclosure, embodiments of the present application further provide a display device comprising: a touch display panel as provided in any of the above embodiments. As shown in FIG14 , FIG14 is a schematic structural diagram of a display device provided in one embodiment of the present application. The display device may be a smartphone, a tablet computer, a digital camera, or the like, and further details are omitted here.

[0133] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0134] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A touch display panel, comprising: substrate; A light-emitting layer, disposed on one side of the substrate, comprising a plurality of light-emitting portions, wherein the light-emitting portions have a first electrode away from one side of the substrate; A plurality of isolation structures are arranged at intervals on one side of the substrate, the isolation structures define a plurality of isolation openings, the light emitting parts are arranged in the isolation openings, and adjacent light emitting parts are separated by isolation structures, and the first electrode is electrically connected to the isolation structure; The time-sharing control module is electrically connected to each of the isolation structures and is used for time-sharingly controlling the corresponding isolation structure to receive a touch signal or a power signal.

2. The touch display panel according to claim 1, wherein: The substrate includes a driving circuit layer, the driving circuit layer includes a plurality of pixel driving circuits, and a power signal terminal of the pixel driving circuit is electrically connected to an isolation structure controlled by the time-sharing control module, so that the time-sharing control module applies a power signal to the first electrode; Optionally, the power signal terminal of the pixel driving circuit is electrically connected to an isolation structure controlled by the time-sharing control module through the time-sharing control module.

3. The touch display panel according to claim 2, wherein: The time-sharing control module includes a plurality of selection circuits; The power signal terminal of the pixel driving circuit is electrically connected to the isolation structure controlled by the selection circuit through the selection circuit, so that the selection circuit provides the power signal to the first electrode.

4. The touch display panel according to claim 3, wherein: The time-sharing control module further includes a control chip; the control chip is used to provide a touch signal to a corresponding selection circuit, so that the selection circuit provides a touch signal to the first electrode; Optionally, the control chip is also electrically connected to the light-emitting portion through the pixel driving circuit, so as to apply a driving signal to the light-emitting portion by the pixel driving circuit; the pixel driving circuit is selected from pixel driving circuits of 2T1C structure, 7T1C structure, 6T1C structure and 3T1C structure.

5. The touch display panel according to claim 4, wherein: The control timing of the control chip includes a touch timing segment and a display timing segment; the touch timing segment and the display timing segment are non-overlapping timing segments; The selection circuit is used to transmit the touch signal provided by the control chip to the isolation structure connected to the selection circuit in the touch timing period, and to transmit the power signal provided by the pixel driving circuit to the isolation structure connected to the selection circuit in the display timing period.

6. The touch display panel according to claim 5, wherein: The selection circuit includes a first input terminal, a second input terminal and an output terminal, and the control chip controls the conduction of the first input terminal, the second input terminal and the output terminal respectively through a control signal line; In the touch timing section, the control chip controls the conduction between the first input terminal and the output terminal through the first control signal line, and provides a touch signal through the first connection line; In the display timing section, the control chip controls the conduction between the second input terminal and the output terminal through the second control signal line, and provides the power signal through the second connection line; The first input terminal is connected to the control chip through a first connection line, and the control chip provides a touch signal; the second input terminal is connected to the pixel driving circuit through a second connection line, and the pixel driving circuit provides a power signal; the output terminal is connected to an isolation structure corresponding to the selection circuit; The driving chip is specifically used to provide a touch signal through the first connecting line during the touch timing period; The pixel driving circuit is specifically configured to provide the power supply signal through the second connecting line during the display timing period; The selection circuit is specifically used to, in the touch timing section, conduct the first input terminal and the output terminal so that the touch signal is output to the corresponding isolation structure through the output terminal, and in the display timing section, conduct the second input terminal and the output terminal so that the power signal is output to the corresponding isolation structure through the output terminal.

7. The touch display panel according to claim 6, wherein: The selection circuit also includes a first switch unit and a second switch unit; the first input end is connected to the output end through the first switch unit, and the first control signal line is connected to the control end of the first switch unit; the second input end is connected to the output end through the second switch unit, and the second control signal line is connected to the control end of the second switch unit. 8 . The touch display panel according to claim 7 , wherein the first switch unit comprises a first transistor; and the second switch unit comprises a second transistor.

9. The touch display panel according to claim 5, wherein: One frame of the touch display panel includes a display time period and a black insertion time period; The display timing segment includes the display time period; the touch timing segment includes the black insertion time period; and the duration of the display time period is longer than the duration of the black insertion time period.

10. The touch display panel according to claim 1, wherein: The light-emitting portion further comprises a second electrode located on a side of the first electrode close to the substrate, and a light-emitting functional layer is arranged between the second electrode and the first electrode; The light-emitting functional layer is located in the isolation opening and is separated by the isolation structure.

11. The touch display panel according to claim 10, wherein: Also includes an insulation layer; The insulating layer is provided with a plurality of pixel openings, wherein the pixel openings expose a portion of the second electrode. The pixel opening is connected to the isolation opening, and the light-emitting functional layer of the light-emitting portion is located in the pixel opening.

12. The touch display panel according to claim 11, wherein: The isolation structure is located on a side of the insulating layer away from the substrate; or, the insulating layer is further provided with a receiving opening, and the isolation structure is located in the receiving opening of the insulating layer; or, the insulating layer includes a plurality of insulating parts arranged at intervals, the insulating parts cover the side edges of the second electrode and are arranged in a ring shape around the side edges of the second electrode, and the isolation structure is located in the intervals between adjacent insulating parts; Optionally, the insulating layer includes a pixel definition layer.

13. The touch display panel according to claim 1, wherein: The isolation structure comprises a blocking portion located on one side of the substrate and a supporting portion located on a side of the blocking portion away from the substrate; The blocking portion is an insulating structure; the supporting portion is a conductive structure; and the side edge of the first electrode overlaps the supporting portion.

14. The touch display panel according to claim 13, wherein: The isolation structure further includes a partition portion located at a side of the support portion away from the substrate; an orthographic projection of the support portion on the substrate is located in an orthographic projection of the partition portion on the substrate.

15. The touch display panel according to claim 1, wherein: Also included is a first encapsulation layer; The first encapsulation layer includes a plurality of encapsulation parts arranged at intervals; The packaging portion is located on a side of the first electrode away from the substrate; the orthographic projection of the packaging portion on the substrate covers the orthographic projection of the first electrode on the substrate.

16. The touch display panel according to claim 15, wherein: Also comprising a second encapsulation layer; The second encapsulation layer is located on a side of the first encapsulation layer away from the substrate; and an orthographic projection of the second encapsulation layer on the substrate covers the substrate.

17. The touch display panel according to claim 16, wherein: Also comprising a third encapsulation layer; The third encapsulation layer is located on a side of the second encapsulation layer away from the substrate; and the orthographic projection of the third encapsulation layer on the substrate covers the substrate.

18. A touch display panel, comprising: substrate; A light-emitting layer, disposed on one side of the substrate, comprising a plurality of light-emitting portions, wherein the light-emitting portions have a first electrode away from one side of the substrate; A plurality of isolation structures are arranged at intervals on one side of the substrate, the isolation structures define a plurality of isolation openings, the light emitting parts are arranged in the isolation openings, and adjacent light emitting parts are separated by isolation structures, and the first electrode is electrically connected to the isolation structure; The isolation structure is used to receive a touch signal or a power signal.

19. A method for preparing a touch display panel, comprising: providing a substrate; forming an isolation material layer on the substrate; Performing patterning on the isolation material layer to form a plurality of isolation structures arranged at intervals; The isolation structure defines a plurality of isolation openings; wherein the isolation structure is electrically connected to a time-sharing control module of the touch display panel; A first electrode of the light emitting portion is formed in the isolation opening; wherein the first electrode is electrically connected to the isolation structure.

20. A display device comprising the touch display panel according to claim 1.

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