Display panel and preparation method thereof

Abstract

The invention discloses a display panel and a display panel preparation method, the display panel comprises a functional area and a protection area adjacent to the functional area, the display panel comprises a functional layer located in the functional area, and the functional layer comprises a first surface and a second surface which are opposite to each other; the first blocking layer is located on one side of the first surface of the functional layer, the second blocking layer is located on one side of the second surface of the functional layer, and the first blocking layer and the second blocking layer extend to the protection area to be connected so as to wrap the side face of the functional layer; the side surfaces of the first barrier layer, the second barrier layer and the functional layer in the protection area define a first isolation cavity; and the first protection part is arranged in the first isolation cavity. And the reliability and the use performance of the display panel are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic products, and in particular relates to a display panel and a method for preparing the display panel. Background Art

[0002] With the advancement of technology, digital display panels such as smart phones and tablet computers have been widely used, among which the display screen is an indispensable interpersonal communication interface in these display panels. OLED (Organic Light Emitting Diode) display panels have the advantages of self-luminescence, energy saving and consumption reduction, bendability, good flexibility, etc., and the display panel that realizes display does not require a backlight source, has the characteristics of fast response speed and good display effect, and has attracted the attention of users and is widely used in terminal products such as smart phones and tablet computers.

[0003] However, due to the structural limitations of existing display panels, the reliability of the display panels cannot meet the requirements.

[0004] Therefore, a new display panel and a method for manufacturing the display panel are urgently needed. Summary of the invention

[0005] The embodiments of the present invention provide a display panel and a method for manufacturing the display panel, which improve the reliability and performance of the display panel.

[0006] On the one hand, an embodiment of the present invention provides a display panel, including a functional area and a protective area adjacent to the functional area, the display panel including: a functional layer located in the functional area, the functional layer including a first surface and a second surface opposite to each other; a first barrier layer and a second barrier layer, the first barrier layer being located on one side of the first surface of the functional layer, the second barrier layer being located on one side of the second surface of the functional layer, and the first barrier layer and the second barrier layer extending to the protective area and connected to each other so as to be wrapped around the side of the functional layer, the first barrier layer, the second barrier layer and the side of the functional layer located in the protective area enclosing a first isolation cavity; a first protective portion being arranged in the first isolation cavity.

[0007] According to one aspect of this embodiment, the first barrier layer includes a first extension portion located in the protection area, and the first extension portion includes a first bending portion; the second barrier layer includes a second extension portion located in the protection area, and the second extension portion includes a second bending portion; the first bending portion, the second bending portion and the side of the functional layer form the first isolation cavity.

[0008] According to one aspect of this embodiment, the first extension portion also includes a third bending portion arranged on the side of the first bending portion away from the functional layer; the second extension portion also includes a fourth bending portion arranged on the side of the second bending portion away from the functional layer, and the third bending portion and the fourth bending portion are arranged opposite to each other and enclosed to form a second isolation cavity; preferably, a second protective portion is provided in the second isolation cavity; preferably, along the thickness direction of the display panel, the cross-section of the second isolation cavity is at least one of a circular shape and an elliptical shape.

[0009] According to one aspect of this embodiment, the first extension portion also includes a fifth bending portion provided on the side of the third bending portion away from the functional layer; the second extension portion also includes a sixth bending portion provided on the side of the fourth bending portion away from the functional layer, the fifth bending portion and the sixth bending portion are arranged opposite to each other and enclosed to form a third isolation cavity; preferably, a third protective portion is provided in the third isolation cavity; preferably, along the thickness direction of the display panel, the cross-section of the third isolation cavity is at least one of a circular shape and an elliptical shape.

[0010] According to one aspect of the present embodiment, the display panel further includes a first protective layer and a second protective layer, the first protective layer being located in the protective area and being arranged on the side of the first barrier layer away from the second barrier layer; the second protective layer being located in the protective area and being arranged on the side of the second barrier layer away from the first barrier layer; preferably, a surface of the first protective layer on a side away from the first barrier layer is flush with a surface of the first barrier layer on a side away from the functional layer; preferably, a surface of the second protective layer on a side away from the second barrier layer is flush with a surface of the second barrier layer on a side away from the functional layer in the functional area.

[0011] According to one aspect of this embodiment, the display panel further includes a supporting layer disposed on a side of the second barrier layer facing away from the functional layer and on a side of the second protective layer facing away from the second barrier layer.

[0012] According to one aspect of this embodiment, the sides of the first protective layer and the second protective layer facing away from the functional layer include a first groove, and the first groove exposes the sides of the first barrier layer and the second barrier layer; a fourth protective portion is provided in the first groove to cover the sides of the first barrier layer and the second barrier layer.

[0013] According to one aspect of the present embodiment, along the thickness direction of the display panel, the display panel includes an array layer, a light-emitting layer and an encapsulation layer which are stacked; the functional layer includes at least one of the array layer and the light-emitting layer; preferably, the first barrier layer and at least one of the encapsulation layers are arranged in the same layer; preferably, the light-emitting layer is arranged on the side of the array layer away from the supporting layer.

[0014] On the other hand, an embodiment of the present invention provides a method for preparing a display panel, wherein the display panel includes a functional area and a protective area adjacent to the functional area, and the method for preparing the display panel includes the following steps: forming a second barrier layer, wherein the second barrier layer is located in the functional area and partially extends to the protective area; forming a functional layer, wherein the functional layer is formed in the functional area, the functional layer includes a first surface and a second surface relative to each other, and a portion of the second barrier layer is formed on the second surface; forming a first protective portion on one side of the second barrier layer in the protective area; forming a first barrier layer, wherein the first barrier layer is formed on one side of the first surface of the functional layer, the first barrier layer extends to the protective area and is connected to the second barrier layer to be wrapped around the side of the functional layer, the first barrier layer, the second barrier layer and the side of the functional layer located in the protective area form a first isolation cavity, and the first protective portion is located in the first isolation cavity.

[0015] According to another aspect of the present embodiment, before the step of providing the functional layer, the step further includes: providing a supporting layer; between the step of providing the functional layer and the step of forming the second barrier layer, the step further includes: forming a second protective layer on the side of the supporting layer in the protective area; after the step of forming the first barrier layer, the step further includes: forming a first protective layer on the side of the first barrier layer in the protective area away from the second barrier layer; preferably, after the step of forming the first protective layer on the side of the first barrier layer in the protective area away from the second barrier layer, the step further includes: forming a first groove on the sides of the first protective layer and the second protective layer away from the functional layer, and forming a fourth protective portion in the first groove to cover the sides of the first barrier layer and the second barrier layer.

[0016] Compared with the related art, the display panel provided by the embodiment of the present invention includes a functional layer, a first barrier layer, a second barrier layer and a first protective portion. The first barrier layer and the second barrier layer are respectively arranged on the first surface and the second surface of the functional layer in the functional area to achieve water and oxygen barrier and electrostatic insulation protection for the first surface and the second surface of the functional layer, and the first barrier layer and the second barrier layer extend to the protective area and are connected to surround the first surface, the second surface and the side of the functional layer to improve the protection effect. Furthermore, the first barrier layer, the second barrier layer and the side of the functional layer located in the protective area form a first isolation cavity. By arranging the first protective portion that can play a protective role such as water and oxygen barrier and electrostatic insulation in the first isolation cavity, black spots at the edge of the display panel caused by high temperature and high humidity water vapor and abnormal edge position caused by ESD (electrostatic discharge) experiments can be avoided, thereby improving the reliability and performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic structural diagram of a display panel provided according to an embodiment of the present invention;

[0019] Figure 2 An embodiment of the present invention provides Figure 1 The cross-sectional diagram at B in the middle;

[0020] Figure 3 Another embodiment of the present invention provides Figure 1 The cross-sectional diagram at B in the middle;

[0021] Figure 4 Another embodiment of the present invention provides Figure 1 The cross-sectional diagram at B in the middle;

[0022] Figure 5 An embodiment of the present invention provides Figure 1 Schematic diagram of the cross section at C in the middle;

[0023] Figure 6 Another embodiment of the present invention provides Figure 1 The cross-sectional diagram at B in the middle;

[0024] Figure 7 Another embodiment of the present invention provides Figure 1 The cross-sectional diagram at B in the middle;

[0025] Figure 8 Another embodiment of the present invention provides Figure 1 The cross-sectional diagram at B in the middle;

[0026] Fig. 9 is a flow chart of a method for preparing a display panel provided according to an embodiment of the present invention;

[0027] Figures 10 to 12 It is a schematic diagram of a structure obtained by a method for preparing a display panel provided in an embodiment of the present invention.

[0028] In the attached figure:

[0029] 1-functional layer; 11-light-emitting layer; 12-array layer; 2-first barrier layer; 3-second barrier layer; 4-first protective part; 5-first protective layer; 6-second protective layer; 7-second protective part; 8-fourth protective part; 9-third protective part; F-encapsulation layer; K1-first isolation cavity; K2-second isolation cavity; K3-third isolation cavity; P1-first surface; P2-second surface; W1-first bending part; W2-second bending part; W3-third bending part; W4-fourth bending part; W5-fifth bending part; W6-sixth bending part; Z-support layer; AA-functional area; NA-protective area. DETAILED DESCRIPTION

[0030] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] In order to better understand the present invention, Figures 1 to 12 A display panel and a manufacturing method according to an embodiment of the present invention are described in detail.

[0033] See also Figure 1 to Figure 2An embodiment of the present invention provides a display panel, including a functional area AA and a protective area NA adjacent to the functional area AA, the display panel including: a functional layer 1, located in the functional area AA, the functional layer 1 including a first surface P1 and a second surface P2 opposite to each other; a first barrier layer 2 and a second barrier layer 3, the first barrier layer 2 is located on one side of the first surface P1 of the functional layer 1, the second barrier layer 3 is located on one side of the second surface P2 of the functional layer 1, and the first barrier layer 2 and the second barrier layer 3 extend to the protective area NA and are connected to each other so as to be wrapped around the side of the functional layer 1, the first barrier layer 2, the second barrier layer 3 and the side of the functional layer 1 located in the protective area NA enclose a first isolation cavity K1; a first protective portion 4 is disposed in the first isolation cavity K1.

[0034] The display panel provided by the embodiment of the present invention includes a functional layer 1, a first barrier layer 2, a second barrier layer 3 and a first protective portion 4. The first barrier layer 2 and the second barrier layer 3 are respectively arranged on the first surface P1 and the second surface P2 of the functional layer 1 in the functional area AA to achieve water and oxygen barrier and electrostatic insulation protection for the first surface P1 and the second surface P2 of the functional layer 1, and the first barrier layer 2 and the second barrier layer 3 extend to the protective area NA and are connected to surround the first surface P1, the second surface P2 and the side of the functional layer 1 to improve the protection effect. Furthermore, the first barrier layer 2, the second barrier layer 3 and the side of the functional layer 1 located in the protective area NA form a first isolation cavity K1. The first protective portion 4 that can play a protective role such as water and oxygen barrier and electrostatic insulation is arranged in the first isolation cavity K1 to avoid black spots at the edge of the display panel caused by high temperature and high humidity water vapor and abnormal edge position caused by ESD (electrostatic discharge) experiments, thereby improving the reliability and performance of the display panel.

[0035] In this embodiment, the functional layer 1 may refer to an array layer 12, a light-emitting layer, or other film layers having driving or display functions. Since these functional layers 1 will be affected in their normal operation after being corroded by water and oxygen or subjected to electrostatic interference, in this embodiment, a first barrier layer 2, a second barrier layer 3, and a first protective portion 4 are provided to wrap and protect the functional layer 1.

[0036] It should be noted that the functional area AA may include a display area of ​​the display panel and a non-display area of ​​the frame portion for setting wiring.

[0037] The first barrier layer 2 and the second barrier layer 3 can be made of materials with insulation and water and oxygen barrier properties to achieve insulation protection and water and oxygen barrier for the functional layer 1. Optionally, when the functional layer 1 includes a light-emitting layer 11, in order to ensure normal light emission of the light-emitting layer 11, the first barrier layer 2 located on the light-emitting side of the light-emitting layer 11 needs to be made of a light-transmitting material.

[0038] When multiple functional layers 1 are provided, multiple groups of first barrier layers 2 and second barrier layers 3 may be used to protect different functional layers 1 respectively.

[0039] In addition to playing the role of insulation and water and oxygen barrier, the first protective part 4 can also be made of a material with good flatness to play a flattening role.

[0040] The display panel provided in the embodiment of the present invention includes a functional area AA and a protection area NA adjacent to the functional area AA. The functional area AA is an area used for luminous display, and the protection area NA can specifically refer to a frame area around the display panel, or it can be an area located within the functional area AA for setting optical elements such as a camera. As long as the part is in contact with the outside world, the first barrier layer 2 and the second barrier layer 3 can be set accordingly.

[0041] See also Figure 2 In some optional embodiments, the first barrier layer 2 includes a first extension portion located in the protection area NA, the first extension portion includes a first bend portion W1; the second barrier layer 3 includes a second extension portion located in the protection area NA, the second extension portion includes a second bend portion W2; the first bend portion W1, the second bend portion W2 and the side of the functional layer 1 form a first isolation cavity K1.

[0042] In this embodiment, the first bending portion W1 can be bent toward the direction of the second extension portion, and correspondingly, the second bending portion W2 can be bent toward the direction of the first extension portion, so that the ends of the first bending portion W1 and the second bending portion W2 are correspondingly connected to form a closed first isolation cavity K1.

[0043] Optionally, along the thickness direction of the display panel, the cross-sectional shape of the first isolation cavity K1 may be a curved shape such as a semicircle or a semi-ellipse, or the first bending portion W1 and the second bending portion W2 may form corresponding fold lines so that the cross-sectional shape of the first isolation cavity K1 is a polygon such as a triangle.

[0044] See also Figure 3 In some optional embodiments, the first extension portion also includes a third bending portion W3 disposed on the side of the first bending portion W1 away from the functional layer 1; the second extension portion also includes a fourth bending portion W4 disposed on the side of the second bending portion W2 away from the functional layer 1, and the third bending portion W3 and the fourth bending portion W4 are arranged opposite to each other and enclose to form a second isolation cavity K2.

[0045] It can be understood that in this embodiment, an additional second isolation chamber K2 is arranged outside the first isolation chamber K1. External water, oxygen or static electricity must first pass through the second isolation chamber K2 before entering the first isolation chamber K1, thereby increasing the path of water, oxygen and static electricity. The second isolation chamber K2 can also play the role of insulation and water and oxygen barrier, further improving the protection effect.

[0046] In this embodiment, the third bending portion W3 can be bent and convex in a direction away from the second extension portion to reserve space for the second isolation cavity K2. Similarly, the fourth bending portion W4 can be bent and convex in a direction away from the first extension portion to cooperate with the third bending portion W3 to form a second isolation cavity K2 of a desired shape.

[0047] Optionally, a second protective part 7 is provided in the second isolation cavity K2. The second protective part 7 can be made of a material with insulation and water-oxygen barrier properties to ensure that even if water, oxygen or static electricity enters the second isolation cavity K2, they cannot pass through the second protective part 7 and enter the functional layer 1.

[0048] Optionally, along the thickness direction of the display panel, the cross-section of the second isolation cavity K2 is at least one of a circle and an ellipse, and the corresponding third bending portion W3 and fourth bending portion W4 may be semicircular, semi-elliptical or the like.

[0049] See also Figure 4 In some optional embodiments, the first extension portion also includes a fifth bending portion W5 disposed on the side of the third bending portion W3 away from the functional layer 1; the second extension portion also includes a sixth bending portion W6 disposed on the side of the fourth bending portion W4 away from the functional layer 1, and the fifth bending portion W5 and the sixth bending portion W6 are disposed opposite to each other and enclose to form a third isolation cavity K3.

[0050] It is understandable that the more isolation cavities are set, the better the protection effect against static electricity and water oxygen. Therefore, in this embodiment, a third isolation cavity K3 is additionally set on the basis of the first isolation cavity K1 and the second isolation cavity K2 to improve the protection effect. Of course, the number of isolation cavities should not be too many. Therefore, too many isolation cavities will cause the border width of the display panel to be too large, affecting the user experience. It should be noted that the present application is not limited to setting only three isolation cavities, and more isolation cavities can be set according to actual needs without special limitations.

[0051] Optionally, a third protective part 9 is provided in the third isolation cavity K3. The third protective part 9 can be made of a material with insulation and water-oxygen barrier properties to ensure that even if water, oxygen or static electricity enters the third isolation cavity K3, they cannot pass through the third protective part 9 and enter the functional layer 1.

[0052] Optionally, along the thickness direction of the display panel, the cross section of the third isolation cavity K3 is at least one of a circle and an ellipse, and the corresponding fifth bending portion W5 and sixth bending portion W6 may be semicircular, semi-elliptical or the like.

[0053] See also Figure 3 to Figure 4In some optional embodiments, the display panel further includes a first protective layer 5 and a second protective layer 6, the first protective layer 5 is located in the protective area NA and is arranged on the side of the first barrier layer 2 away from the second barrier layer 3; the second protective layer 6 is located in the protective area NA and is arranged on the side of the second barrier layer 3 away from the first barrier layer 2.

[0054] In this embodiment, the first protective layer 5 and the second protective layer 6 are respectively provided to carry and protect the first barrier layer 2 and the second barrier layer 3. The first protective layer 5 and the second protective layer 6 can also be made of materials with insulation and water and oxygen barrier properties. At the same time, the first protective layer 5 and the second protective layer 6 can also play the role of forming a flat surface to ensure the consistency of the thickness of the display panel. For example, the surface of the first protective layer 5 facing away from the first barrier layer 2 is flush with the surface of the first barrier layer 2 in the functional area AA facing away from the functional layer 1, that is, the surface of the first protective layer 5 facing away from the first barrier layer 2 is a flat surface, and is located in the same plane as the surface of the first barrier layer 2 in the functional area AA facing away from the functional layer 1.

[0055] Similarly, the surface of the second protective layer 6 facing away from the second barrier layer 3 is flush with the surface of the second barrier layer 3 in the functional area AA facing away from the functional layer 1, and the surface of the second protective layer 6 facing away from the second barrier layer 3 is a flat surface.

[0056] See also Figures 4 to 5 In some optional embodiments, the display panel further includes a support layer Z disposed on a side of the second barrier layer 3 facing away from the functional layer 1 and a side of the second protective layer 6 facing away from the second barrier layer 3 .

[0057] It should be noted that, during preparation, the support layer Z can be used to provide support for the second protective layer 6, the second barrier layer 3 and other film layers that are subsequently formed.

[0058] See also Figure 5 In some optional embodiments, the sides of the first protective layer 5 and the second protective layer 6 facing away from the functional layer 1 include a first groove, and the first groove exposes the sides of the first barrier layer 2 and the second barrier layer 3; a fourth protective portion 8 is provided in the first groove to cover the sides of the first barrier layer 2 and the second barrier layer 3.

[0059] It should be noted that, although the first barrier layer 2 and the second barrier layer 3 located in the protection area NA are in contact, there is still a risk of water and oxygen intrusion at the joint between the first barrier layer 2 and the second barrier layer 3. Therefore, this embodiment arranges a fourth protective portion 8 in the first groove, and makes the fourth protective portion 8 cover the sides of the first barrier layer 2 and the second barrier layer 3 to seal the joint between the first barrier layer 2 and the second barrier layer 3, thereby preventing water and oxygen from invading the functional area AA along the joint between the first barrier layer 2 and the second barrier layer 3, thereby further improving the protection effect.

[0060] It should be noted that the first barrier layer 2 and the second barrier layer 3 may be partially removed and thinned by an etching process to form a first groove. The external coating technology forms a fourth protection part 8 in the first slot to prevent external abnormalities. The external abnormal factors can specifically refer to water oxygen, static electricity or dust.

[0061] See also Figures 6 to 8 Optionally, along the thickness direction of the display panel, the display panel includes an array layer 12, a light-emitting layer 11 and an encapsulation layer F which are stacked; the functional layer 1 includes at least one of the array layer 12 and the light-emitting layer 11.

[0062] For example, when the functional layer 1 includes the array layer 12, the first barrier layer 2 and the second barrier layer 3 may be disposed corresponding to the upper and lower surfaces of the array layer 12, respectively, and wrap the side of the array layer 12 to achieve all-round protection, such as Figure 7 Alternatively, when the functional layer 1 includes the light-emitting layer 11, the first barrier layer 2 and the second barrier layer 3 may be disposed corresponding to the upper and lower surfaces of the light-emitting layer 11, respectively, and wrap the side of the light-emitting layer 11 to achieve all-round protection, such as Figure 6 Alternatively, the first barrier layer 2 and the second barrier layer 3 may be respectively arranged on the upper and lower surfaces of the whole formed by the array layer 12 and the light-emitting layer 11 to achieve encapsulation protection for the array layer 12 and the light-emitting layer 11, as shown in FIG. Figure 8 shown.

[0063] Of course, the array layer 12 and the light-emitting layer 11 may also be protected by the first barrier layer 2 and the second barrier layer 3 respectively, that is, two groups of the first barrier layer 2 and the second barrier layer 3 are provided.

[0064] See also Figure 8 Optionally, the light-emitting layer 11 is disposed on the side of the array layer 12 away from the supporting layer Z to ensure that the light emission of the light-emitting layer 11 is not affected.

[0065] Optionally, the light-emitting layer 11 includes a first electrode layer, a light-emitting functional layer and a second electrode layer which are stacked in a direction away from the substrate.

[0066] Optionally, the light-emitting functional layer includes one or more of an electron injection layer, an electron transport layer, a light-emitting material layer, a hole blocking layer, an electron blocking layer, a hole transport layer and a hole injection layer. The specific type of the light-emitting layer can be selected without special limitation. The electron injection layer, the electron transport layer and the hole blocking layer can be arranged between the second electrode layer and the light-emitting material layer. The electron blocking layer, the hole transport layer and the hole injection layer can be arranged between the first electrode layer and the light-emitting material layer.

[0067] The material of the first electrode layer is generally a material with a high work function in order to improve the hole injection efficiency, and may be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO, Indium Tin Oxide), zinc tin oxide (IZO) or a transparent conductive polymer (such as polyaniline), etc. For example, the first electrode layer may be made of an ITO-Ag-ITO composite material, without special limitation.

[0068] The material of the second electrode layer can be one of the metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca) or indium (In), or it can be an alloy of the aforementioned metal materials, such as magnesium-silver alloy (Mg / Ag) and lithium-aluminum alloy (Li / Al), but this embodiment does not impose any limitation on this.

[0069] Optionally, the array layer 12 may include a driving circuit. For example, the array layer 12 may include a first conductive layer, a second conductive layer, and a third conductive layer that are arranged on one side of the substrate and are stacked. An insulating layer is provided between adjacent conductive film layers. Exemplarily, the pixel driving circuit provided in the array layer 12 includes a transistor and a storage capacitor. The transistor includes an active layer, a gate, a source electrode, and a drain electrode. The material of the source electrode and the gate electrode may include a combination of one or more of molybdenum, titanium, aluminum, copper, etc. The gate electrode of the transistor is usually used to receive a control signal so that the transistor is turned on or off under the control of the control signal.

[0070] Optionally, the first barrier layer 2 and at least one of the encapsulation layers F are arranged in the same layer, which means that at least one of the encapsulation layers F can be reused as the first barrier layer 2 to reduce the difficulty of preparation, simplify the process flow and reduce the cost.

[0071] Optionally, the encapsulation layer F includes a first encapsulation layer, and a material of the first encapsulation layer includes an inorganic material.

[0072] Optionally, the encapsulation layer F further includes a second encapsulation layer located on the side of the first encapsulation layer away from the array layer 12, and the material of the second encapsulation layer includes an organic material. The organic material can be made of resin or polymer organic material, and can be formed by IJP (Inkjet printing) process.

[0073] Optionally, the encapsulation layer F also includes a third encapsulation layer located on the side of the second encapsulation layer away from the array layer 12, and the material of the third encapsulation layer includes an inorganic material. Continuing to add an inorganic encapsulation layer F outside the organic encapsulation layer F can further improve the encapsulation effect of the encapsulation layer F; in this embodiment, the material of the third encapsulation layer can be the same as or different from the material of the first encapsulation layer, and there is no special limitation.

[0074] Optionally, the material of the first encapsulation layer is the same as the material of the third encapsulation layer, so that the first encapsulation layer and the third encapsulation layer can be prepared using the same equipment, which can simplify the preparation process of the display panel.

[0075] The first barrier layer 2 may be disposed on the same layer as any one of the first encapsulation layer, the second encapsulation layer and the third encapsulation layer.

[0076] See also Fig. 9 The embodiment of the present invention further provides a method for manufacturing a display panel, wherein the display panel includes a functional area AA and a protection area NA adjacent to the functional area AA, and the method for manufacturing the display panel includes the following steps:

[0077] S110: forming a second barrier layer 3, wherein the second barrier layer 3 is located in the functional area AA and partially extends to the protection area NA, such as Fig.10 As shown;

[0078] S120: forming a functional layer 1, the functional layer 1 is formed in the functional area AA, the functional layer 1 includes a first surface P1 and a second surface P2 opposite to each other, and a portion of the second barrier layer 3 is formed on the second surface P2, such as Fig.11 As shown;

[0079] S130: forming a first protection portion 4 on one side of the second barrier layer 3 in the protection area NA, such as Fig.12 As shown;

[0080] S140: forming a first barrier layer 2, the first barrier layer 2 being formed on one side of the first surface P1 of the functional layer 1, the first barrier layer 2 extending to the protection area NA and connected to the second barrier layer 3, so as to be wrapped around the side of the functional layer 1, the first barrier layer 2 located in the protection area NA, the second barrier layer 3 and the side of the functional layer 1 enclose a first isolation cavity K1, and the first protection portion 4 is located in the first isolation cavity K1, as shown in FIG. Figure 3 shown.

[0081] The display panel preparation method provided by the embodiment of the present invention is to respectively arrange the first barrier layer 2 and the second barrier layer 3 on the first surface P1 and the second surface P2 of the functional layer 1 in the functional area AA to achieve water and oxygen barrier and electrostatic insulation protection for the first surface P1 and the second surface P2 of the functional layer 1, and the first barrier layer 2 and the second barrier layer 3 extend to the protection area NA and are connected to surround the first surface P1, the second surface P2 and the side of the functional layer 1 to improve the protection effect. Furthermore, the first barrier layer 2, the second barrier layer 3 and the side of the functional layer 1 located in the protection area NA form a first isolation cavity K1, and the first protection part 4 that can play a protective role such as water and oxygen barrier and electrostatic insulation is arranged in the first isolation cavity K1 to avoid high temperature and high humidity water vapor causing black spots at the edge of the display panel and abnormal edge position caused by ESD (electrostatic discharge) experiment, thereby improving the reliability and performance of the display panel.

[0082] In step S110 , the second barrier layer 3 may be prepared by using a material having insulation and water and oxygen barrier properties, so as to achieve insulation protection and water and oxygen barrier for the functional layer 1 .

[0083] In step S120, the functional layer 1 may refer to the array layer 12, the light-emitting layer, and other film layers having driving or display functions. Since these functional layers 1 will be affected in their normal operation after being corroded by water and oxygen or subjected to electrostatic interference, the present embodiment provides a first barrier layer 2, a second barrier layer 3, and a first protective portion 4 to wrap and protect the functional layer 1.

[0084] In step S130, since the first isolation cavity K1 is sealed, it is necessary to form a first protective portion 4 at a corresponding position on the second barrier layer 3 before forming the first barrier layer 2. In addition to playing the role of insulation and water and oxygen barrier, the first protective portion 4 can also be made of a material with good flatness to play a flattening role.

[0085] In step S140, the first barrier layer 2 may also be made of a material having insulation and water and oxygen barrier properties. For example, the first barrier layer 2 and the second barrier layer 3 may be made of the same material to reduce costs.

[0086] In some optional embodiments, before the step of forming the functional layer 1, the step further includes: providing a support layer Z, and using the support layer Z to provide support for subsequently formed film layers such as the second protective layer 6 and the second barrier layer 3.

[0087] Optionally, between the steps of forming the functional layer 1 and forming the second barrier layer 3 , the method further includes: forming a second protective layer 6 on one side of the support layer Z of the protection area NA to support and protect the second barrier layer 3 .

[0088] Optionally, after the step of forming the first barrier layer 2, the method further includes: forming a first protective layer 5 on the side of the first barrier layer 2 in the protection area NA away from the second barrier layer 3 to protect the first barrier layer 2 and to have a planarization effect.

[0089] Optionally, after the step of forming the first protective layer 5 on the side of the first barrier layer 2 of the protective area NA facing away from the second barrier layer 3, it also includes: forming a first groove on the side of the first protective layer 5 and the second protective layer 6 facing away from the functional layer 1, and forming a fourth protective portion 8 in the first groove to cover the side surfaces of the first barrier layer 2 and the second barrier layer 3.

[0090] By arranging the fourth protective part 8 in the first groove and making the fourth protective part 8 cover the sides of the first barrier layer 2 and the second barrier layer 3, the joint seam between the first barrier layer 2 and the second barrier layer 3 is blocked, thereby preventing water and oxygen from invading the functional area AA along the joint seam between the first barrier layer 2 and the second barrier layer 3, thereby further improving the protective effect.

[0091] The display panel provided in the embodiment of the present invention can be applied to mobile phones, or any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiment of the present invention does not make any special limitations on this.

[0092] The above is only a specific implementation of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the system, module and unit described above can refer to the location process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.

[0093] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or in a different order from the embodiments, or several steps can be performed simultaneously.

Claims

1. A display panel, characterized in that: The display panel includes a functional area and a protection area adjacent to the functional area, and the display panel includes: A functional layer, located in the functional area, the functional layer comprising a first surface and a second surface opposite to each other; a first barrier layer and a second barrier layer, wherein the first barrier layer is located on one side of the first surface of the functional layer, and the second barrier layer is located on one side of the second surface of the functional layer, and the first barrier layer and the second barrier layer extend to the protection area and are connected to each other so as to be wrapped around the side surface of the functional layer, and the first barrier layer, the second barrier layer and the side surface of the functional layer located in the protection area form a first isolation cavity; The first protection part is arranged in the first isolation cavity.

2. The display panel according to claim 1, characterized in that: The first barrier layer includes a first extension portion located in the protection area, and the first extension portion includes a first bending portion; The second barrier layer includes a second extension portion located in the protection area, and the second extension portion includes a second bending portion; The first bending portion, the second bending portion and the side surface of the functional layer form the first isolation cavity.

3. The display panel according to claim 2, characterized in that: The first extension portion further includes a third bending portion provided on a side of the first bending portion away from the functional layer; The second extension portion further includes a fourth bent portion disposed on a side of the second bent portion away from the functional layer, and the third bent portion and the fourth bent portion are disposed opposite to each other and enclose a second isolation cavity; Preferably, a second protective portion is provided in the second isolation cavity; Preferably, along the thickness direction of the display panel, a cross-section of the second isolation cavity is at least one of a circular shape and an elliptical shape.

4. The display panel according to claim 3, characterized in that: The first extension portion further includes a fifth bending portion provided on a side of the third bending portion away from the functional layer; The second extension portion further includes a sixth bent portion disposed on a side of the fourth bent portion away from the functional layer, and the fifth bent portion and the sixth bent portion are disposed opposite to each other and enclosed to form a third isolation cavity; Preferably, a third protection part is provided in the third isolation cavity; Preferably, along the thickness direction of the display panel, a cross-section of the third isolation cavity is at least one of a circular shape and an elliptical shape.

5. The display panel according to claim 1, characterized in that: The display panel further comprises a first protective layer and a second protective layer, wherein the first protective layer is located in the protective area and is arranged on a side of the first barrier layer away from the second barrier layer; The second protective layer is located in the protective area and is arranged on a side of the second barrier layer away from the first barrier layer; Preferably, a surface of the first protective layer facing away from the first barrier layer is flush with a surface of the first barrier layer of the functional area facing away from the functional layer; Preferably, a surface of the second protective layer facing away from the second barrier layer is flush with a surface of the second barrier layer of the functional area facing away from the functional layer.

6. The display panel according to claim 5, characterized in that: The display panel further includes a supporting layer disposed on a side of the second barrier layer away from the functional layer and on a side of the second protective layer away from the second barrier layer.

7. The display panel according to claim 5, characterized in that: The sides of the first protective layer and the second protective layer facing away from the functional layer include a first groove, and the first groove exposes the sides of the first barrier layer and the second barrier layer; A fourth protection portion is provided in the first groove to cover the side surfaces of the first barrier layer and the second barrier layer.

8. The display panel according to claim 6, characterized in that: Along the thickness direction of the display panel, the display panel includes an array layer, a light-emitting layer and an encapsulation layer which are stacked; The functional layer includes at least one of an array layer and a light-emitting layer; Preferably, the first barrier layer and at least one of the encapsulation layers are arranged in the same layer; Preferably, the light-emitting layer is arranged on a side of the array layer away from the supporting layer.

9. A method for preparing a display panel, characterized in that: The display panel includes a functional area and a protection area adjacent to the functional area, and the display panel manufacturing method includes the following steps: forming a second barrier layer, wherein the second barrier layer is located in the functional area and partially extends to the protection area; forming a functional layer, wherein the functional layer is formed in the functional area, the functional layer comprises a first surface and a second surface opposite to each other, and a portion of the second barrier layer is formed on the second surface; forming a first protection portion on one side of the second barrier layer in the protection area; A first barrier layer is formed, wherein the first barrier layer is formed on one side of the first surface of the functional layer, the first barrier layer extends to the protective area and is connected to the second barrier layer to wrap around the side of the functional layer, the first barrier layer, the second barrier layer and the side of the functional layer located in the protective area form a first isolation cavity, and the first protective portion is located in the first isolation cavity.

10. The method for preparing a display panel according to claim 9, characterized in that: Before the step of forming the functional layer, the method further comprises: Provide a support layer; Between the steps of forming the functional layer and the steps of forming the second barrier layer, the method further comprises: forming a second protective layer on one side of the support layer in the protective area; After the step of forming the first barrier layer, the method further comprises: forming a first protective layer on a side of the first barrier layer in the protective area away from the second barrier layer; Preferably, after the step of forming the first protective layer on the side of the first barrier layer in the protection area away from the second barrier layer, the method further comprises: A first groove is formed on the side of the first protective layer and the second protective layer away from the functional layer, and a fourth protective portion is formed in the first groove to cover the side of the first barrier layer and the second barrier layer.

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