Manufacturing method of touch display panel, touch display panel and display device

Abstract

The present application discloses a manufacturing method of a touch display panel, a touch display panel and a display device, and belongs to the field of display technology. The method comprises: providing a backplane, the backplane having an area to be opened; forming a luminescent material layer and an encapsulation layer on the backplane in sequence; forming a first opening on the luminescent material layer and the encapsulation layer, and the area to be opened is located in the orthographic projection of the first opening on the backplane; forming a shielding inorganic layer on the backplane formed with the luminescent material layer and the encapsulation layer having the first opening, and the hole wall of the first opening and the area to be opened are covered by the shielding inorganic layer; forming a through hole that penetrates the shielding inorganic layer and the area to be opened. The present application covers the hole wall of the opening with an inorganic layer, and the inorganic layer and the backplane are provided with a through hole for exposing the camera. Under such a structure, the side of the luminescent material layer at the opening is protected by the inorganic layer and will not be exposed to the external environment. The effect of extending the life of the touch display panel is achieved.

Description

Technical Field

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

[0002] The touch display panel generally includes a display panel and a touch structure located on the light-emitting side of the display panel. Currently, in order to achieve a higher screen-to-body ratio, a through hole for arranging a camera is formed on the touch display panel. Summary of the invention

[0003] The embodiments of the present application provide a method for manufacturing a touch display panel, a touch display panel and a display device. The technical solution is as follows:

[0004] According to one aspect of the present application, a method for manufacturing a touch display panel is provided, the method comprising:

[0005] Providing a back plate, wherein the back plate has an area to be opened;

[0006] sequentially forming a light-emitting material layer and an encapsulation layer on the backplane;

[0007] Forming a first opening on the light-emitting material layer and the encapsulation layer, wherein the area to be opened is located in the orthographic projection of the first opening on the backplane;

[0008] forming a shielding inorganic layer on a back plate formed with a light-emitting material layer having the first opening and an encapsulation layer, wherein the hole wall of the first opening and the area to be opened are covered by the shielding inorganic layer;

[0009] A through hole is formed that penetrates the shielding inorganic layer and the area to be opened.

[0010] Optionally, forming a shielding inorganic layer on a backplane formed with the light-emitting material layer and the encapsulation layer comprises:

[0011] Forming a first composite structure layer on the backplane formed with the light-emitting material layer and the encapsulation layer, the first composite structure layer comprising a first inorganic layer and a first touch wiring pattern stacked in a direction away from the backplane, and the first inorganic layer in the first composite structure layer being reused as the shielding inorganic layer;

[0012] A first touch wiring opening is formed on the first touch wiring pattern, and the area to be opened is located in the orthographic projection of the first touch wiring opening on the back plate.

[0013] Optionally, the step of sequentially forming a light emitting material layer and an encapsulation layer on the backplane includes:

[0014] Sequentially forming the light emitting material layer, the electrode layer and the encapsulation layer on the backplane;

[0015] The forming of a first opening on the light emitting material layer and the encapsulation layer comprises:

[0016] forming a second inorganic layer on the backplane having the encapsulation layer formed thereon;

[0017] Forming a second opening on the second inorganic layer and the encapsulation layer by a patterning process, wherein the area to be opened is located in the orthographic projection of the second opening on the backplane;

[0018] forming a second touch control wiring pattern on a back plate formed with a second inorganic layer having the second opening;

[0019] A third opening is formed on the second touch wiring pattern, the electrode layer and the light-emitting material layer through a composition process, and the area to be opened is located in the orthographic projection of the third opening on the back plate.

[0020] Optionally, the area of ​​the backplane to be opened has a backplane inorganic layer, and the shielding inorganic layer is connected to the backplane inorganic layer.

[0021] Optionally, the material of the planar layer includes an organic material.

[0022] Optionally, the first touch wiring pattern includes a titanium metal layer, an aluminum metal layer and a composite film layer composed of a titanium metal layer.

[0023] Optionally, the forming of a through hole penetrating the shielding inorganic layer and the area to be opened includes:

[0024] A through hole penetrating the shielding inorganic layer and the area to be drilled is formed by a laser drilling process.

[0025] Optionally, the step of sequentially forming a light emitting material layer and an encapsulation layer on the backplane includes:

[0026] Sequentially forming the light emitting material layer, the electrode layer and the encapsulation layer on the backplane;

[0027] The forming of a first opening on the light emitting material layer and the encapsulation layer comprises:

[0028] forming a second inorganic layer on the backplane having the encapsulation layer formed thereon;

[0029] Forming a second opening on the second inorganic layer and the encapsulation layer by a patterning process, wherein the area to be opened is located in the orthographic projection of the second opening on the backplane;

[0030] forming a second touch control wiring pattern on the backplane formed with the second inorganic layer;

[0031] Forming a third opening on the second touch wiring pattern, the electrode layer and the light-emitting material layer through a patterning process, wherein the area to be opened is located in the orthographic projection of the third opening on the back plate;

[0032] Forming a shielding inorganic layer on the backplane having the light emitting material layer and the encapsulation layer formed thereon, comprising:

[0033] forming a first composite structure layer on the backplane formed with the third opening, wherein the first composite structure layer comprises a first inorganic layer and a first touch wiring pattern stacked in a direction away from the backplane, and the first inorganic layer in the first composite structure layer is reused as the shielding inorganic layer;

[0034] A first touch wiring opening is formed on the first touch wiring pattern, and the area to be opened is located in the orthographic projection of the first touch wiring opening on the back plate.

[0035] According to another aspect of the present application, a touch display panel is provided, the touch display panel comprising:

[0036] A back plate, wherein the back plate has an area to be opened;

[0037] The backplane is provided with a luminescent material layer and an encapsulation layer in sequence, the luminescent material layer and the encapsulation layer have a first opening, and the area to be opened is located in the orthographic projection of the first opening on the backplane;

[0038] A shielding inorganic layer is provided on the back plate provided with the light emitting material layer having the first opening and the encapsulation layer, and the hole wall of the first opening and the area to be opened are covered by the shielding inorganic layer;

[0039] The shielding inorganic layer and the area to be opened have through holes.

[0040] Optionally, the backplane provided with the light-emitting material layer and the encapsulation layer is provided with a first composite structure layer, the first composite structure layer includes a first inorganic layer and a first touch wiring pattern stacked in a direction away from the backplane, the first inorganic layer in the first composite structure layer is reused as the shielding inorganic layer, the first touch wiring pattern has a first touch wiring opening, and the area to be opened is located in the orthographic projection of the first touch wiring opening on the backplane.

[0041] Optionally, the area of ​​the backplane to be opened has a backplane inorganic layer, and the shielding inorganic layer is connected to the backplane inorganic layer.

[0042] Optionally, at least one second composite structure layer having composite through holes is provided on the backplane provided with the first composite structure layer, each of the second composite structure layers includes a stacked third inorganic layer and a third touch wiring layer, and the area to be opened is located in the orthographic projection of the composite through hole on the backplane.

[0043] Optionally, a flat layer is provided on the back panel provided with the first touch wiring pattern;

[0044] The through hole penetrates the planar layer, the shielding inorganic layer and the area to be opened.

[0045] Optionally, an electrode layer is provided between the light-emitting material layer and the encapsulation layer;

[0046] The backplane provided with the light-emitting material layer and the encapsulation layer is provided with a first composite structure layer, the first composite structure layer includes a first inorganic layer and a first touch wiring pattern stacked in a direction away from the backplane, the first inorganic layer in the first composite structure layer is reused as the shielding inorganic layer, the first touch wiring pattern has a first touch wiring opening, and the area to be opened is located in the orthographic projection of the first touch wiring opening on the backplane;

[0047] A stacked second inorganic layer and a second touch wiring pattern are arranged between the first composite structure layer and the packaging layer, the second inorganic layer and the packaging layer have a second opening, the second touch wiring pattern, the electrode layer and the light-emitting material layer have a third opening, the area to be opened is located in the orthographic projection of the second opening on the back panel, and the area to be opened is located in the orthographic projection of the third opening on the back panel.

[0048] According to another aspect of the present application, a display device is provided, characterized in that the display device includes the above-mentioned touch display panel.

[0049] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0050] A method for manufacturing a touch display panel is provided, in which an opening is first formed on a luminescent material layer, and then the hole wall of the opening is covered by an inorganic layer, and then a through hole for exposing a camera is formed on the inorganic layer and a back plate. In such a structure, the side of the luminescent material layer at the opening is protected by the inorganic layer and will not be exposed to the external environment. The problem of low life of the touch display panel in the related art is solved. The effect of extending the life of the touch display panel is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0052] Figure 1 It is a structural schematic diagram of a touch display panel in the related art.

[0053] Figure 2 It is a flow chart of a method for manufacturing a touch display panel provided in an embodiment of the present application.

[0054] Figure 3 It is a flow chart of another method for manufacturing a touch display panel provided in an embodiment of the present application.

[0055] Figure 4 yes Figure 3 A schematic diagram of the structure of a backplane in the illustrated embodiment.

[0056] Figure 5 yes Figure 3 A schematic diagram of the structure of another backplane in the embodiment shown.

[0057] Figure 6 yes Figure 3 A schematic diagram of the structure of another backplane in the embodiment shown.

[0058] Figure 7 yes Figure 3 A schematic diagram of the structure of another backplane in the embodiment shown.

[0059] Figure 8 yes Figure 3 A schematic diagram of the structure of another backplane in the embodiment shown.

[0060] Fig. 9 yes Figure 3 A schematic structural diagram of a touch display panel in the illustrated embodiment.

[0061] Fig.10 yes Figure 3 A schematic structural diagram of a touch display panel in the illustrated embodiment.

[0062] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0063] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0064] Figure 1 The structure diagram of a touch display panel in the related art includes a backplane 11, a light emitting material layer 12, an encapsulation layer 13, a first inorganic layer 14, a first touch electrode layer 15, a second inorganic layer 16, a second touch electrode layer 17 and an organic layer 18.

[0065] The touch display panel has a camera opening 19. The camera opening 19 penetrates the back plate 11, the light-emitting material layer 12, the encapsulation layer 13, the first inorganic layer 14, the first touch electrode layer 15, the second inorganic layer 16, the second touch electrode layer 17 and the organic layer 18. The side of the back plate 11 away from the light-emitting material layer 12 can be used to set a camera, and the camera can be exposed at the camera opening 19 and obtain an image of the side of the organic layer 18 in the touch display panel away from the back plate.

[0066] However, the side surface of the light-emitting material layer 12 at the opening 19 is exposed to the external environment, and the light-emitting material layer 12 is usually easily corroded and damaged by external water and oxygen, thereby shortening the life of the touch display panel.

[0067] Embodiments of the present application provide a method for manufacturing a touch display panel, a touch display panel, and a display device.

[0068] Figure 2 : is a flow chart of a method for manufacturing a touch display panel provided in an embodiment of the present application. The method may include the following steps:

[0069] Step 201: Provide a back plate having an area to be opened.

[0070] Step 202: sequentially forming a light-emitting material layer and a packaging layer on the backplane.

[0071] Step 203: forming a first opening on the light-emitting material layer and the encapsulation layer, wherein the area to be opened is located in the orthographic projection of the first opening on the back plate.

[0072] Step 204 , forming a shielding inorganic layer on the back plate formed with the light-emitting material layer having the first opening and the encapsulation layer, and the hole wall of the first opening and the area to be opened are covered by the shielding inorganic layer.

[0073] Step 205 , forming a through hole penetrating the shielding inorganic layer and the area to be opened.

[0074] In summary, the manufacturing method of the touch display panel provided in the embodiment of the present application first forms an opening on the light-emitting material layer, then covers the hole wall of the opening with an inorganic layer, and then forms a through hole for exposing the camera on the inorganic layer and the back plate. Under such a structure, the side of the light-emitting material layer at the opening is protected by the inorganic layer and will not be exposed to the external environment. The problem of low life of the touch display panel in the related art is solved. The effect of extending the life of the touch display panel is achieved.

[0075] Figure 3 : is a flow chart of another method for manufacturing a touch display panel provided in an embodiment of the present application. The method may include the following steps:

[0076] Step 301: Provide a back plate having an area to be opened.

[0077] The area to be opened may be a predetermined area for opening a hole to set a camera. The backplane may be an array substrate. The array substrate generally includes a base substrate and a thin film transistor (TFT) array on the base substrate, and a thin film transistor may not be set in the area to be opened.

[0078] Step 302: sequentially form a light-emitting material layer, an electrode layer and a packaging layer on the backplane.

[0079] The luminescent material layer may be a structural layer composed of electroluminescent (EL) material. EL material is a material that can emit light under the drive of an electric field. Different EL materials can emit light of different colors. However, EL materials are usually fragile and easily affected and damaged by various factors in the external environment (such as water and oxygen).

[0080] One function of the encapsulation layer is to protect the luminescent material layer and prevent the luminescent material layer from being damaged by the external environment. The encapsulation layer may be a thin film encapsulation (TFE) layer.

[0081] The electrode layer may be one electrode of the light-emitting material layer, such as a cathode, and the other electrode of the light-emitting material layer may be located in the back plate.

[0082] Step 303: forming a second inorganic layer on the backplane having the encapsulation layer formed thereon.

[0083] The material of the second inorganic layer may include silicon nitride (SiNx).

[0084] like Figure 4, which is a schematic diagram of the structure on the backplane at the end of step 303. The backplane 31 is provided with a light-emitting material layer 32, an electrode layer 33, a packaging layer 34 and a second inorganic layer 35.

[0085] Step 304: Form a second opening on the second inorganic layer and the encapsulation layer through a patterning process, and the area to be opened is located in the orthographic projection of the second opening on the backplane.

[0086] The encapsulation layer is usually composed of a composite film layer of multiple organic thin films and inorganic thin films, so the second opening can be formed on the encapsulation layer and the second inorganic layer through a single patterning process, thereby saving a single patterning process and reducing manufacturing costs. The area to be opened is located in the orthographic projection of the second opening on the backplane, that is, the second inorganic layer and the encapsulation layer will not block the area to be opened.

[0087] like Figure 5 , which is a schematic diagram of the structure of the backplane at the end of step 304. The second inorganic layer 35 and the encapsulation layer 34 have a second opening k1. The area q to be opened is located at the orthographic projection of the second opening k1 on the backplane ( Figure 5 (not shown).

[0088] In the embodiment of the present application, the patterning process may include steps such as forming photoresist, exposing, developing, etching, and stripping the photoresist.

[0089] Step 305 , forming a second touch control wiring pattern on the back plate formed with the second inorganic layer having the second opening.

[0090] The second touch control wiring pattern may include a composite film layer composed of a titanium metal layer, an aluminum metal layer and a titanium metal layer. The second touch control wiring pattern may include touch control electrode wiring to realize a touch control function.

[0091] The second touch wiring pattern can be formed by processing the metal layer through a patterning process.

[0092] Step 306: Form a third opening on the second touch wiring pattern, the electrode layer and the light-emitting material layer through a patterning process.

[0093] The second touch wiring pattern and the electrode layer are usually made of metal materials and can be removed by the same etching solution. The light-emitting material layer is relatively fragile and can also be removed by the same etching solution. Therefore, the third opening can be formed on the second touch wiring pattern, the electrode layer and the light-emitting material layer through a single patterning process. The area to be opened is located in the orthographic projection of the third opening on the back plate, that is, the area to be opened can be exposed in the third opening.

[0094] like Figure 6, which is a schematic diagram of the structure of the backplane at the end of step 306. The second touch wiring pattern 36, the electrode layer 33 and the light emitting material layer 32 have a third opening k2, and the side of the light emitting material layer 32 is exposed in the third opening k2.

[0095] Step 307 : forming a first composite structure layer on the backplane formed with the second touch wiring pattern.

[0096] The first composite structure layer includes a first inorganic layer and a first touch wiring pattern stacked in a direction away from the back plate. The material of the first inorganic layer may include silicon nitride. The structure of the first touch wiring pattern may refer to the above-mentioned second touch wiring pattern.

[0097] The hole wall of the third opening and the area to be opened are covered by the first inorganic layer, that is, the first inorganic layer can cover the side of the luminescent material layer exposed in the third opening, thereby protecting the luminescent material layer.

[0098] In addition, a touch display panel usually includes multiple inorganic layers. In the manufacturing method of the touch display panel provided in the present application, the first inorganic layer is reused as a shielding inorganic layer for protecting the luminescent material layer, thereby achieving the effect of protecting the luminescent material layer without increasing the film layer structure.

[0099] Step 308 , forming a first touch wiring opening on the first touch wiring pattern, wherein the area to be opened is located in the orthographic projection of the first touch wiring opening on the back panel.

[0100] The first touch wiring pattern may include another touch electrode in the touch display panel. In a touch display panel, two layers of touch electrodes consisting of the first touch wiring pattern and the second touch wiring pattern may be used to implement a touch function. The touch display panel provided in the embodiment of the present application may be a flexible multi-layer on cell (FMLOC) display device.

[0101] like Figure 7 , which is a schematic diagram of the structure of the backplane at the end of step 308. The first inorganic layer 37 acts as a protective layer to protect the side of the light-emitting material layer 32 exposed in the third opening k2, and the first touch wiring pattern 38 has a first touch wiring opening k3.

[0102] In addition, the area q to be opened of the backplane 31 may have a backplane inorganic layer 311. The backplane 31 may include the backplane inorganic layer 311 and an electrical structure 312 (such as TFT, etc.) formed on the backplane inorganic layer 311. Since the area q to be opened is used for opening holes, the electrical structure 312 may not be set in the area q to be opened, and then the backplane inorganic layer 311 may directly contact and connect with the first inorganic layer (i.e., the shielding inorganic layer) 37, so that a highly sealed structure can be formed, further preventing water and oxygen in the external environment from damaging the luminescent material layer 32.

[0103] Optionally, at the end of step 308, at least one second composite structure layer having composite through holes may be formed on the backplane formed with the first composite structure layer. Each second composite structure layer includes a stacked third inorganic layer and a third touch wiring layer, and the area to be opened is located in the orthographic projection of the composite through hole on the backplane, that is, more layers of touch wiring layers may be provided in the touch display panel.

[0104] Step 309 : forming a flat layer on the substrate having the first composite structure layer formed thereon.

[0105] The material of the planar layer may include an organic material. The organic material has good fluidity, and is easy to eliminate the step difference between the various structures on the backplane, thereby improving the planarity of the various structures on the backplane.

[0106] like Figure 8 , which is a schematic diagram of the structure on the backplane at the end of step 310. The flat layer 39 is filled in the third opening k2.

[0107] Step 310: forming a through hole penetrating the planar layer, the first inorganic layer, and the area to be opened.

[0108] A through hole penetrating the planar layer, the first inorganic layer and the area to be opened may be formed by a laser drilling process.

[0109] like Fig. 9 , which is a schematic diagram of the structure of a touch display panel at the end of step 310 , wherein the through hole t penetrates the planar layer 38 , the first inorganic layer 37 and the area q to be opened on the back plate 31 .

[0110] Optionally, an image acquisition component 40 is disposed on a side of the back plate 31 away from the flat layer 38 , and the image acquisition component 40 is exposed at the through hole t.

[0111] In summary, the manufacturing method of the touch display panel provided in the embodiment of the present application first forms an opening on the light-emitting material layer, then covers the hole wall of the opening with an inorganic layer, and then forms a through hole for exposing the camera on the inorganic layer and the back plate. Under such a structure, the side of the light-emitting material layer at the opening is protected by the inorganic layer and will not be exposed to the external environment. The problem of low life of the touch display panel in the related art is solved. The effect of extending the life of the touch display panel is achieved.

[0112] like Fig.10 As shown, it is a schematic diagram of the structure of a touch display panel provided by the present application, and the touch display panel includes:

[0113] The back plate 31 has a region q to be opened.

[0114] A luminescent material layer 32 and an encapsulation layer 34 are sequentially arranged on the back plate 31 . The luminescent material layer 32 and the encapsulation layer 34 have a first opening k4 . The area q to be opened is located in the orthographic projection of the first opening k4 on the back plate 31 .

[0115] A shielding inorganic layer 37 is disposed on the back plate provided with the light emitting material layer 32 and the encapsulation layer 34 , and the hole wall of the first opening k4 and the area q to be opened are covered by the shielding inorganic layer 37 .

[0116] The shielding inorganic layer 37 and the back plate 31 have a through hole t, and the orthographic projection of the through hole t on the back plate 31 is located in the area q to be opened.

[0117] like Fig. 9 As shown, it is a schematic diagram of the structure of another touch display panel provided in an embodiment of the present application.

[0118] The area q to be opened on the back plate 31 may have a back plate inorganic layer ( Fig. 9 The backplane may include a backplane inorganic layer and other electrical structures (such as TFT, etc.) formed on the backplane inorganic layer. Since the area q to be opened is used for opening holes, no electrical structure may be provided in the area q to be opened. Then, the backplane inorganic layer may directly contact and connect with the shielding inorganic layer, thus forming a highly sealed structure, further preventing water and oxygen in the external environment from damaging the luminescent material layer.

[0119] An electrode layer 33 is provided between the light-emitting material layer 32 and the encapsulation layer 34. The backplane 31 provided with the light-emitting material layer 32 and the encapsulation layer 34 is provided with a first composite structure layer, the first composite structure layer includes a first inorganic layer 37 and a first touch wiring pattern 38 stacked in a direction away from the backplane, the first inorganic layer 37 in the first composite structure layer is reused as a shielding inorganic layer, the first touch wiring pattern 38 has a first touch wiring opening k3, and the area q to be opened is located in the orthographic projection of the first touch wiring opening k3 on the backplane 31.

[0120] A stacked second inorganic layer 35 and a second touch wiring pattern 36 are arranged between the first inorganic layer 37 and the encapsulation layer 34, the second inorganic layer 35 and the encapsulation layer 34 have a second opening, the second touch wiring pattern 36, the electrode layer 33 and the light-emitting material layer 32 have a third opening k2, the area q to be opened is located in the orthographic projection of the second opening on the back panel 31, and the area q to be opened is located in the orthographic projection of the third opening k2 on the back panel.

[0121] Optionally, at least one second composite structure layer ( Fig. 9 (not shown), each second composite structure layer includes a stacked third inorganic layer and a third touch wiring layer, and the area to be opened is located in the orthographic projection of the composite through hole on the backplane. That is, more layers of touch wiring layers can be set in the touch display panel.

[0122] The back panel provided with the first touch wiring pattern is provided with a flat layer 39. The through hole t can penetrate the flat layer 39, the shielding inorganic layer 37 and the area q to be opened. The material of the flat layer may include an organic material. The organic material has good fluidity, and it is easy to eliminate the step difference between the various structures on the back panel, thereby improving the flatness of the various structures on the back panel.

[0123] In summary, the touch display panel provided in the embodiment of the present application covers the hole wall of the opening with an inorganic layer, and a through hole for exposing the camera is provided on the inorganic layer and the back plate. Under such a structure, the luminescent material layer is protected by the inorganic layer on the side of the opening and will not be exposed to the external environment. The problem of low life of the touch display panel in the related art is solved. The effect of extending the life of the touch display panel is achieved.

[0124] According to another aspect of the present application, a display device is provided, which includes any touch display panel provided in the above embodiments. The display device can be a smart phone, a laptop computer, a tablet computer, a digital camera, a smart wearable device, and the like. Any touch display panel provided in the above embodiments can provide a touch display function for these devices. And because the touch display panel provided in the embodiment of the present application has a long life and high waterproof performance, the life and waterproof performance of the display device including the touch display panel will also be correspondingly improved.

[0125] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0126] In the present application, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0127] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for manufacturing a touch display panel, characterized in that: The method comprises: Providing a back plate, wherein the back plate has an area to be opened; sequentially forming a light-emitting material layer and an encapsulation layer on the backplane; Forming a first opening on the light-emitting material layer and the encapsulation layer, wherein the area to be opened is located in the orthographic projection of the first opening on the backplane; forming a shielding inorganic layer on the back plate formed with the light-emitting material layer having the first opening and the encapsulation layer, wherein the hole wall of the first opening and the area to be opened are covered by the shielding inorganic layer; Forming a through hole penetrating the shielding inorganic layer and the area to be opened; Wherein, the step of sequentially forming a light emitting material layer and an encapsulation layer on the backplane comprises: Sequentially forming the light emitting material layer, the electrode layer and the encapsulation layer on the backplane; The forming of a first opening on the light emitting material layer and the encapsulation layer comprises: forming a second inorganic layer on the backplane having the encapsulation layer formed thereon; Forming a second opening on the second inorganic layer and the encapsulation layer by a patterning process, wherein the area to be opened is located in the orthographic projection of the second opening on the backplane; forming a second touch control wiring pattern on a back plate formed with a second inorganic layer having the second opening; A third opening is formed on the second touch wiring pattern, the electrode layer and the light-emitting material layer through a composition process, and the area to be opened is located in the orthographic projection of the third opening on the back plate.

2. The method according to claim 1, characterized in that Forming a shielding inorganic layer on the backplane having the light emitting material layer and the encapsulation layer formed thereon, comprising: Forming a first composite structure layer on the backplane formed with the light-emitting material layer and the encapsulation layer, the first composite structure layer comprising a first inorganic layer and a first touch wiring pattern stacked in a direction away from the backplane, and the first inorganic layer in the first composite structure layer being reused as the shielding inorganic layer; A first touch wiring opening is formed on the first touch wiring pattern, and the area to be opened is located in the orthographic projection of the first touch wiring opening on the back plate.

3. The method according to claim 1, characterized in that The area to be opened on the backplane has a backplane inorganic layer, and the shielding inorganic layer is connected to the backplane inorganic layer.

4. The method according to claim 1, characterized in that: Before forming a through hole penetrating the shielding inorganic layer and the area to be opened, the method further includes: forming a planar layer, wherein the material of the planar layer comprises an organic material; Forming a through hole penetrating the shielding inorganic layer and the area to be opened includes: A through hole is formed that penetrates the planar layer, the shielding inorganic material and the area to be opened.

5. The method according to claim 2, characterized in that: The first touch wiring pattern includes a titanium metal layer, an aluminum metal layer and a composite film layer composed of a titanium metal layer.

6. The method according to claim 1, characterized in that The forming of a through hole penetrating the shielding inorganic layer and the area to be opened comprises: A through hole penetrating the shielding inorganic layer and the area to be drilled is formed by a laser drilling process.

7. The method according to claim 1, characterized in that Forming a shielding inorganic layer on the backplane having the light emitting material layer and the encapsulation layer formed thereon, comprising: forming a first composite structure layer on the backplane formed with the third opening, wherein the first composite structure layer comprises a first inorganic layer and a first touch wiring pattern stacked in a direction away from the backplane, and the first inorganic layer in the first composite structure layer is reused as the shielding inorganic layer; A first touch wiring opening is formed on the first touch wiring pattern, and the area to be opened is located in the orthographic projection of the first touch wiring opening on the back plate.

8. A touch display panel, characterized in that: The touch display panel comprises: A backplane, the backplane comprising a backplane inorganic layer and an electrical structure located on one side of the backplane inorganic layer, the backplane having an area to be opened; The backplane is provided with a luminescent material layer and an encapsulation layer in sequence, the luminescent material layer and the encapsulation layer have a first opening, and the area to be opened is located in the orthographic projection of the first opening on the backplane; A shielding inorganic layer is provided on the back plate provided with the light-emitting material layer having the first opening and the encapsulation layer, and the hole wall of the first opening and the area to be opened are covered by the shielding inorganic layer; The shielding inorganic layer and the area to be opened have through holes; Wherein, an electrode layer is provided between the light-emitting material layer and the encapsulation layer; The backplane provided with the light-emitting material layer and the encapsulation layer is provided with a first composite structure layer, the first composite structure layer includes a first inorganic layer and a first touch wiring pattern stacked in a direction away from the backplane, the first inorganic layer in the first composite structure layer is reused as the shielding inorganic layer, the first touch wiring pattern has a first touch wiring opening, and the area to be opened is located in the orthographic projection of the first touch wiring opening on the backplane; A stacked second inorganic layer and a second touch wiring pattern are arranged between the first composite structure layer and the packaging layer, the second inorganic layer and the packaging layer have a second opening, the second touch wiring pattern, the electrode layer and the light-emitting material layer have a third opening, the area to be opened is located in the orthographic projection of the second opening on the back panel, and the area to be opened is located in the orthographic projection of the third opening on the back panel.

9. The touch display panel according to claim 8, characterized in that: The back panel provided with the light-emitting material layer and the encapsulation layer is provided with a first composite structure layer, the first composite structure layer includes a first inorganic layer and a first touch wiring pattern stacked in a direction away from the back panel, the first inorganic layer in the first composite structure layer is reused as the shielding inorganic layer, the first touch wiring pattern has a first touch wiring opening, and the area to be opened is located in the orthographic projection of the first touch wiring opening on the back panel.

10. The touch display panel according to claim 8, characterized in that: The area of ​​the backplane to be opened has a backplane inorganic layer, the area of ​​the backplane to be opened is not provided with the electrical structure, and the shielding inorganic layer is connected to the backplane inorganic layer.

11. The touch display panel according to claim 9, characterized in that: At least one second composite structure layer having composite through holes is disposed on the backplane having the first composite structure layer, each of the second composite structure layers comprises a stacked third inorganic layer and a third touch wiring layer, and the area to be opened is located in the orthographic projection of the composite through hole on the backplane.

12. The touch display panel according to claim 9, characterized in that: A flat layer is disposed on the back panel provided with the first touch wiring pattern; The through hole passes through the planar layer, the shielding inorganic layer and the area to be opened.

13. A display device, characterized in that: The display device comprises the touch display panel according to any one of claims 8 to 12.

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