Display panel and method of manufacturing the same

A display panel disclosed in the embodiments of the present application includes a substrate layer, a first inorganic layer, a plurality of first organic layers, a second inorganic layer, and a plurality of second organic layers. The first inorganic layer is disposed on the substrate layer, and a plurality of first receiving structures are disposed on a side of the first inorganic layer away from the substrate layer. The first organic layers are respectively disposed in the first receiving structures. The second inorganic layer is disposed on the first inorganic layer and the first organic layers, and a plurality of second receiving structures are disposed on a side of the second inorganic layer away from the substrate layer. The second organic layers are respectively disposed in the second receiving structures.

FIELD OF INVENTION

The present disclosure relates to the field of display technologies, and more particularly, to a display panel and a method of manufacturing the same.

BACKGROUND OF INVENTION

With the development of organic light-emitting diode (OLED) display panel technology, flexible display OLED display panels are more and more popular with the public.

In order to achieve flexible display, the encapsulation layers with reduced thickness in the OLEDs have become the current trend. However, such encapsulation layers are the film layer structures in which an inorganic film layer, an organic film layer and an inorganic film layer are alternatively stacked. Due to the different properties between the inorganic film layer and the organic film layer, the inorganic film layer easily peels from the organic film layer during bending, thereby causing failed encapsulation.

A peeling problem is prone to occur to an interface between the inorganic film layer and the organic film layer when the current OLED display panels are bent.

SUMMARY OF INVENTION

The embodiments of the present application provide a display panel and a method of manufacturing the same, which can reduce the probability of peeling between the inorganic film layer and the organic film layer when the display panel is bent.

In a first aspect, an embodiment of the present application provides a display panel, including:

a substrate layer;

a first inorganic layer disposed on the substrate layer, and a plurality of first receiving structures being disposed on a side of the first inorganic layer away from the substrate layer;

a plurality of first organic layers respectively disposed in the first receiving structures;

a second inorganic layer disposed on the first inorganic layer and the first organic layers, and a plurality of second receiving structures disposed on a side of the second inorganic layer away from the substrate layer; and

a plurality of second organic layers respectively disposed in the second receiving structures.

In the display panel provided in the embodiment of the present application, the first receiving structures are grooves or via holes, and the second receiving structures are grooves or via holes.

In the display panel provided in the embodiment of the present application, the first receiving structures are via holes, the second receiving structures are via holes, and the second receiving structures expose the first inorganic layer and the first organic layers.

In the display panel provided in the embodiment of the present application, the display panel further comprises:

a third organic layer, and the third organic layer covers the second organic layers and the second inorganic layer.

In the display panel provided in the embodiment of the present application, the third organic layer is integrally formed with the second organic layers.

In the display panel provided in the embodiment of the present application, the display panel further comprises:

a fourth inorganic layer, and the fourth inorganic layer is disposed on the third organic layer.

In the display panel provided in the embodiment of the present application, the substrate layer comprises a substrate and a flexible substrate, a light-emitting layer, and a third inorganic layer which are sequentially stacked on the substrate.

In the display panel provided in the embodiment of the present application, number of the first receiving structures is the same as number of the second receiving structures.

In the display panel provided in the embodiment of the present application, material of the first inorganic layer comprises silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, or aluminum nitride.

In the display panel provided in the embodiment of the present application, material of the first organic layers comprises epoxy-based organic material or acrylic-based organic material.

In a second aspect, an embodiment of the present application provides a method of manufacturing a display panel, comprising:

providing a substrate layer;

forming a first inorganic layer on the substrate layer, and forming a plurality of first receiving structures on a side of the first inorganic layer away from the substrate layer;

filling the each first receiving structures with organic material to form a plurality of first organic layers;

forming a second inorganic layer on the first inorganic layer and the first organic layers, and forming a plurality of second receiving structures on a side of the second inorganic layer away from the substrate layer; and

filling the each second receiving structures with organic material to form a plurality of second organic layers.

In the method of manufacturing the display panel provided in the embodiment of the present application, the first receiving structures are grooves or via holes, and the second receiving structures are grooves or via holes.

In the method of manufacturing the display panel provided in the embodiment of the present application, the first receiving structures are via holes, the second receiving structures are via holes, and the second receiving structures expose the inorganic layer and the first organic layers.

In the method of manufacturing the display panel provided in the embodiment of the present application, the method further comprises:

forming a third organic layer on the second inorganic layer to cover the second organic layers and the second inorganic layer.

In the method of manufacturing the display panel provided in the embodiment of the present application, the method further comprises:

forming a fourth inorganic layer on the third organic layer.

In the method of manufacturing the display panel provided in the embodiment of the present application, the substrate layer comprises a substrate and a flexible substrate, a light-emitting layer, and a third inorganic layer which are sequentially stacked on the substrate.

In the method of manufacturing the display panel provided in the embodiment of the present application, the light-emitting layer is an organic light-emitting array.

In the method of manufacturing the display panel provided in the embodiment of the present application, number of the first receiving structures is the same as number of the second receiving structures.

In the method of manufacturing the display panel provided in the embodiment of the present application, material of the first inorganic layer comprises silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, or aluminum nitride.

In the method of manufacturing the display panel provided in the embodiment of the present application, material of the first organic layers comprises epoxy-based organic material or acrylic-based organic material.

The display panel provided in the embodiment of the present application comprises a substrate layer; a first inorganic layer disposed on the substrate layer; and a plurality of first receiving structures disposed on a side of the first inorganic layer away from the substrate layer; a plurality of first organic layers respectively disposed in the first receiving structures; a second inorganic layer disposed on the first inorganic layer and the first organic layers, and a plurality of second receiving structures disposed on a side of the second inorganic layer away from the substrate layer; and a plurality of second organic layers respectively disposed in the second receiving structures. The present solution can reduce the probability of peeling between the inorganic film layer and the organic film layer when the display panel is bent.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The embodiments of the present application provide a display panel and a method of manufacturing the same, which will be described in detail below respectively.

Please refer toFIG. 1, which is a schematic structural view of a display panel provided by an embodiment of the present application. The display panel100may include a substrate layer10, a first inorganic layer20, a plurality of first organic layers30, a second inorganic layer40, and a plurality of second organic layers50.

The substrate layer10may include a substrate11and a flexible substrate12, a light-emitting structure13, and a third inorganic layer14which are sequentially stacked on the substrate11. The substrate11is an array substrate for driving the light-emitting structure13to emit light. The flexible substrate12may be made of a flexible material, such as polyimide. The flexible substrate12can increase the bending resistance of the display panel100. The light-emitting structure13can implement screen display of the display panel100. The fourth inorganic layer14can protect the light-emitting structure13to prevent the light-emitting structure13from being affected by external water vapor or oxygen.

The first inorganic layer20is disposed on the substrate layer10. The first inorganic layer20may be a film layer formed of inorganic material, such as silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, or aluminum nitride. The first inorganic layer20can further protect the light-emitting structure13and other film layers to prevent the light-emitting structure13and other film layers from being affected by external water vapor or oxygen.

In some embodiments, in order to reduce the stress generated when the first inorganic layer20is bent and enhance the bending resistance of the first inorganic layer20, a plurality of first receiving structures21may be disposed on a side of the first inorganic layer20away from the substrate layer10, and the each first receiving structures21may be filled with organic material to form the plurality of first organic layers30. It can be understood that the first organic layers30are respectively disposed in the first receiving structures21. The organic material may be an epoxy-based organic material or an acrylic-based organic material.

It should be noted that, in the description of this application, the terms “first”, “second”, and “third” are merely used for purposes of description, and are not intended to indicate or imply relative importance or to implicitly indicate the number of indicated technical features. Thus, the features defined as “first,” “second,” and “third” may explicitly or implicitly include one or more of the features.

The second inorganic layer40may cover the first inorganic layer20and the first organic layers30. The second inorganic layer40may be a film layer formed of inorganic material, such as silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, or aluminum nitride. The second inorganic layer40can further protect the light-emitting structure13and other film layers to prevent the light-emitting structure13and other film layers from being affected by external water vapor or oxygen.

In some embodiments, in order to reduce the stress generated when the second inorganic layer40is bent and enhance the bending resistance of the second inorganic layer40, a plurality of second receiving structures41may be disposed on a side of the second inorganic layer40away from the substrate layer10. In addition, the each second receiving structures41may be filled with organic material to form the plurality of second organic layers50. It can be understood that the second organic layers50are respectively disposed in the second receiving structures41. The organic material may be epoxy-based material or acrylic-based material.

It should be noted that the first receiving structures21and the second receiving structures41may be grooves or via holes. Number of the first receiving structures21is the same as number of the second receiving structures41.

In order to further increase the adhesion between the organic film layer and the inorganic film layer, and reduce the probability of peeling between the organic film layer and the inorganic film layer when the display panel100is bent, in some embodiments, the first receiving structures21may be via holes, and the second receiving structures41may be via holes. The second receiving structures41may expose the first inorganic layer20and the first organic layers30. Specifically, an orthographic projection of the second receiving structures41on the first inorganic layer20partially overlaps that of the first receiving structures21. That is, part of the first organic layers30are connected to the second inorganic layer40, and another part of the first organic layers30are connected to the second organic layers50. In addition, a third organic layer60covering the second inorganic layer40and the second organic layers50is deposited on the second inorganic layer40and the second organic layers50. Material of the third organic layer60may include organic material such as an epoxy-based material or an acrylic-based material.

In view of the above, the first organic layers30are connected to the second organic layers50, and the second organic layers50are connected to the third organic layer60. As a whole, the first organic layers30, the second organic layers50, and the third organic layer60may form a structure similar to a “rivet” embedded in the first inorganic layer20and the second inorganic layer40. Due to the effective adhesion between the organic film layers, the structure enhances the adhesion between the third organic layer60and the second inorganic layer40, and the adhesion between the second organic layers40and the first inorganic layer20.

Since part of the first organic layers30are connected to the second inorganic layer40, another part of the first organic layers30are connected to the second organic layers50, and the adhesion between the organic film layers is large, it is difficult for the third organic layer60to peel from the second inorganic layer40when the display panel100is bent. That is, the probability that the third organic layer60peels from the second inorganic layer40is reduced.

In some embodiments, in order to reduce the manufacturing process of the display panel100and save human resources, the second organic layers50and the third organic layer60may be integrally formed. That is, the second organic layers50may be formed by filling the second receiving structures41with organic material while the third organic layer60is formed.

Finally, a fourth inorganic layer70may be deposited on the third organic layer60to complete the encapsulation of the display panel100. It should be noted that the fourth inorganic layer70is a film layer made of inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, or aluminum nitride. The fourth inorganic layer70can further protect the light-emitting structure13and other film layers to prevent the light-emitting structure13and other film layers from being affected by external water vapor or oxygen.

Please refer toFIG. 2, an embodiment of the present application further provides a method of manufacturing a display panel. The specific process of the method of manufacturing the display panel100may be as follows:

Step201: providing a substrate layer10.

The substrate layer10may include a substrate11and a flexible substrate12, a light-emitting layer23, and a third inorganic layer14which are sequentially stacked on the substrate11. The flexible substrate12may be made of flexible material, such as polyimide. The flexible substrate12can increase the bending resistance of the display panel100. The light-emitting layer13may be an organic light-emitting display array.

Step202: forming a first inorganic layer20on the substrate layer10, and forming a plurality of first receiving structures21on a side of the first inorganic layer20away from the substrate layer10.

Specifically, the first inorganic layer20may be formed on the substrate layer10by the chemical vapor deposition method, and the plurality of first receiving structures21may be formed on the side of the first inorganic layer20away from the substrate layer10by etching.

Step203: filling the each first receiving structures21with organic material to form a plurality of first organic layers30.

Specifically, the each first receiving structures21may be filled with organic material by the inkjet printing technology to form the plurality of first organic layers30.

Step204: forming a second inorganic layer40on the first inorganic layer20and the first organic layers30, and forming a plurality of second receiving structures41on a side of the second inorganic layer40away from the substrate layer10.

Specifically, the second inorganic layer40is deposited on the first inorganic layer20and the first organic layers30by the chemical vapor deposition method, and the plurality of second receiving structures41are formed on the side of the second inorganic layer40away from the substrate layer10by etching.

Step205: filling the each second receiving structures41with organic material to form a plurality of second organic layers50.

Specifically, the each second receiving structures41by the inkjet printing technology may be filled with organic material to form the plurality of second organic layer50.

In some embodiments, a third organic layer60may also be formed on the second organic layers50and the second inorganic layer40to cover the second organic layers50and the second inorganic layer40. The first organic layers30, the second organic layers40, and the third organic layer60may form a “rivet” structure embedded in the first inorganic layer20and the second inorganic layer40.

In the embodiment of the present application, the first organic layers30, the second organic layers40, and the third organic layer60may form a structure similar to a “rivet” embedded in the first inorganic layer20and the second inorganic layer40. Since part of the first organic layers30are connected to the second inorganic layer40, another part of the first organic layers30are connected to the second organic layers50, and the adhesion between the organic film layers is large, it is difficult for the third organic layer60to peel from the second inorganic layer40when the display panel100is bent. That is, the probability that the third organic layer60peels from the second inorganic layer40is reduced. Moreover, due to the embedding of the organic film layers, the stress inside the first inorganic layer20and the second inorganic layer40is reduced, the bending resistance of the first inorganic layer20and the second inorganic layer40can be enhanced, and the bending resistance of the display panel100is further enhanced.

In the foregoing embodiments, descriptions of the embodiments have different emphases, and for parts that are not described in detail in one embodiment, refer to the related descriptions in the other embodiments.

The display panel and the method of manufacturing the same provided in the embodiments of the present application have been described in detail above. Specific examples are used herein to explain the principles and implementation of the present application. The description of the above embodiments is merely used to help understand the technical solution and the core ideas of the present application. It should be understood by persons of ordinary skill in the art that modifications may still be made to the technical solutions described in the embodiments, or equivalent replacements may be made to some technical features in the technical solutions, as long as such modifications or replacements do not cause the essence of corresponding technical solutions to depart from the spirit and scope of the technical solutions in the embodiments of the present application.