CN116524814A - Display panel and display device - Google Patents

Abstract

The application provides a display panel and display device relates to and shows technical field, and display panel includes: a stretchable substrate comprising a first backsheet layer, a first tie layer and a first support on the first backsheet layer; the display substrate is positioned on one side of the first bonding layer and the first supporting part far away from the first back film layer, and comprises a plurality of display units which are separated from each other, a connecting unit positioned between two adjacent display units, and a hollow area positioned between the display units and the connecting unit; wherein, the orthographic projection of the first bonding layer on the first back film layer overlaps with the orthographic projection of part of the display unit on the first back film layer, and the orthographic projection of the supporting part on the first back film layer overlaps with at least the orthographic projection of part of the display unit on the first back film layer. The display panel provided by the embodiment of the application has low damage rate of the film layer and high reliability in the stretching process.

Description

Display panel and display device

technical field

The present application relates to the field of display technology, in particular to a display panel and a display device.

Background technique

A flexible display panel is a display panel formed based on flexible materials. Since the flexible display panel has the characteristics of rollability, wide viewing angle, and portability, the flexible display panel has broad application prospects and good market potential in portable products and most display application fields. Among them, the flexible and stretchable display panel is an important kind of flexible display panel.

In the related art, the film layer of the flexible and stretchable display panel is easily damaged during the stretching process, which leads to low reliability of the product.

Contents of the invention

Embodiments of the present application provide a display panel and a display device, the display panel can reduce the damage probability of the film layer during the stretching process, and improve the reliability of the display panel.

In order to achieve the above object, the embodiments of the present application adopt the following technical solutions:

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

A stretchable substrate comprising a first backing film layer, a first adhesive layer and a first support portion positioned on the first backing film layer; the first adhesive layer is on the first backing film layer The orthographic projection of the first support portion on the first back film layer does not overlap with each other;

The display substrate is located on the side of the first adhesive layer and the first support portion away from the first back film layer, and includes a plurality of display units separated from each other, and two adjacent display units are located The connection unit between them, and the hollow area between the display unit and the connection unit;

a protective substrate covering the display substrate;

Wherein, the orthographic projection of the first adhesive layer on the first back film layer overlaps with the orthographic projection of part of the display unit on the first back film layer, and the supporting part is on the first back film layer. The orthographic projection on a back film layer overlaps at least part of the orthographic projection of the display unit on the first back film layer.

In at least one embodiment of the present application, the first support part includes a plurality of first support units spaced apart from each other; The orthographic projections of the display units on the first back film layer overlap.

In at least one embodiment of the present application, the first support part further includes a first support layer, and the first support layer is located between the first back film layer and the first support unit;

The orthographic projection of the first support unit on the first back film layer falls within the orthographic projection of the first support layer on the first back film layer.

In at least one embodiment of the present application, the shape of the orthographic projection of the first adhesive layer on the first backing film layer is a ring;

The orthographic projection of the first supporting portion on the first back film layer falls within the area enclosed by the orthographic projection of the first adhesive layer on the first back film layer.

In at least one embodiment of the present application, the display unit includes a plurality of first display units;

The partial area of the orthographic projection of each first display unit on the first back film layer overlaps with the orthographic projection of the first adhesive layer on the first back film layer; each of the first display units A partial area of the orthographic projection of the display unit on the first back film layer overlaps with the orthographic projection of the first supporting unit on the first back film layer;

Wherein, there is a gap between the first supporting unit and the first bonding layer.

In at least one embodiment of the present application, the stretchable base also includes:

a second back film layer located on a side of the first back film layer away from the display substrate;

a second adhesive layer located between the second support layer and the first backing layer;

a second support portion located between the second support layer and the first backing film layer;

The orthographic projection of the second adhesive layer on the first back film layer and the orthographic projection of the second support portion on the first back film layer do not overlap each other.

In at least one embodiment of the present application, the second support part includes a second support unit and a second support layer;

The second supporting layer is located on a side of the second backing film layer close to the first backing film layer;

The second support unit is located on a side of the second support layer close to the first backing film layer;

The orthographic projection of the second support unit on the first back film layer falls within the orthographic projection of the second support layer on the first back film layer.

In at least one embodiment of the present application, there is a gap between the connecting unit and the stretchable base.

In at least one embodiment of the present application, the protective substrate includes an anti-reflection layer covering the display substrate, a protective layer covering the anti-reflection layer, and an anti-reflection layer between the anti-reflection layer and the protective layer. third bonding layer;

Wherein, the orthographic projection of the anti-reflection layer on the first back film layer overlaps with the orthographic projection of the display substrate on the first back film layer,

Or, the orthographic projection of the antireflection layer on the first back film layer coincides with the first back film layer.

In a second aspect, embodiments of the present application provide a display device, including the display panel as described in any one of the first aspect.

Embodiments of the present application provide a display panel and a display device. The display panel includes a stretchable base, a display substrate, and a protective substrate; wherein, the stretchable base includes a first back film layer, and a The first bonding layer and the first supporting part on the film layer; the orthographic projection of the first bonding layer on the first backing film layer and the first supporting part on the first backing film layer The orthographic projections of the orthographic projections do not overlap each other; the display substrate is located on the side of the first adhesive layer and the first support portion away from the first back film layer, and includes a plurality of display units spaced apart from each other, located on the opposite side The connecting unit adjacent to the two display units, and the hollow area between the display unit and the connecting unit; the protective substrate covers the display substrate; wherein, the first adhesive layer is on the second The orthographic projection on a back film layer is overlapped with the orthographic projection of part of the display unit on the first back film layer, and the orthographic projection of the support part on the first back film layer is at least partially the same as that of the first back film layer. The orthographic projections of the display units on the first back film layer overlap.

In the display panel provided by the embodiments of the present application, on the one hand, the orthographic projection of the first adhesive layer on the first back film layer overlaps the orthographic projection of some display units on the first back film layer, and some display units No contact with the first adhesive layer, during the stretching process of the display panel, the display unit and the connection unit that are not in contact with the first adhesive layer are not subject to the adhesive force of the first adhesive layer, and the stretching process is easier to achieve , avoiding the damage of the film layer caused by the joint action of the adhesive force and the stretching force, and improving the reliability of the display panel; on the other hand, the orthographic projection of the first supporting part on the first back film layer is at least partly The orthographic projections of the display unit on the first back film layer are overlapped, and the first supporting part supports part of the display unit, which reduces the degree of deformation of this part of the display unit along the direction perpendicular to the first back film layer during the stretching process, and improves the reliability of the display panel.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a display panel provided by an embodiment of the present application;

FIG. 2 is a top structural view of a display substrate provided by an embodiment of the present application;

Fig. 3 is a schematic cross-sectional structure diagram of a stretchable substrate provided by an embodiment of the present application;

Fig. 4 is a top view structure diagram of a stretchable substrate provided by an embodiment of the present application;

5-8 are structural schematic diagrams of four display panels provided by the embodiments of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In the embodiments of the present application, words such as "first", "second", "third", and "fourth" are used to distinguish the same or similar items with basically the same functions and functions, only for the purpose of clearly describing the The technical solutions of the application embodiments should not be understood as indicating or implying the relative importance or implicitly indicating the quantity of the indicated technical features.

In the embodiments of the present application, the orientations or positional relationships indicated by the terms "upper", "lower", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or Nothing to imply that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the application.

In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific examples" or "some examples" are intended to indicate A particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present application. Schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

In the embodiments of the present application, "plurality" means two or more, and "at least one" means one or more, unless otherwise specifically defined.

Features such as "parallel", "perpendicular" and "same" used in the embodiments of the present application all include features such as "parallel", "perpendicular" and "same" in the strict sense, as well as "approximately parallel", "approximately perpendicular", "Substantially the same" and the like include certain tolerances, taking into account measurements and tolerances associated with the measurement of a particular quantity (e.g., limitations of the measurement system), and mean what is acceptable for a particular value as determined by one of ordinary skill in the art. within the range of deviation. For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of the stated value.

Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is interpreted in an open and inclusive sense, ie "including, but not limited to".

The "same layer" in the embodiments of the present application refers to the relationship among multiple film layers formed of the same material after going through the same step (eg, one-step patterning process). The "same layer" here does not always mean that multiple film layers have the same thickness or that multiple film layers have the same height in cross-sectional view. The polygons in this specification are not strictly defined, and may be approximate triangles, parallelograms, trapezoids, pentagons, or hexagons, etc., and there may be some small deformations caused by tolerances.

An embodiment of the present application provides a display panel. Referring to FIG. 1 , it includes: a stretchable substrate 1, including a first back film layer 11, and a first adhesive layer 12 and a first adhesive layer on the first back film layer 11. The supporting part 13; the orthographic projection of the first adhesive layer 12 on the first back film layer 11 does not overlap with the orthographic projection of the first supporting part 13 on the first back film layer 11; the display substrate 2 is located on the first back film layer 11 The side of the adhesive layer 12 and the first support portion 13 away from the first back film layer 11 includes a plurality of display units 201 spaced apart from each other, a connecting unit 202 located between two adjacent display units 201, and a The hollow area 203 between the display unit 201 and the connection unit 202; the protective substrate 3, covering the display substrate 2; wherein, the orthographic projection of the first adhesive layer 12 on the first back film layer 11 is the same as that of the part of the display unit 201 on the first back The orthographic projection on the film layer 11 overlaps, and the orthographic projection of the support portion on the first back film layer 11 at least overlaps the orthographic projection of a part of the display unit 201 on the first back film layer 11 .

In the embodiment of the present application, the display panel includes a flexible display panel.

The embodiment of the present application does not limit the type of the display panel; for example, the display panel includes an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel, a micro light emitting diode (Micro Light Emitting Diode, Micro LED) display panel, a submillimeter light emitting diode Any one of diode (Mini Light Emitting Diode, Mini LED) display panels.

In the embodiment of the present application, the first back film layer 11 includes a stretchable back film, and in some embodiments, the material of the stretchable back film includes a flexible material.

In some embodiments, the first back film layer 11 is used to protect and support the display substrate 2 ; in other embodiments, the first back film layer 11 is also beneficial for the display substrate 2 to dissipate heat.

In the embodiment of the present application, the first back film layer 11 is bonded to the display substrate 2 through the first bonding layer 12 .

The embodiment of the present application does not limit the material of the first bonding layer 12 , for example, the material of the first bonding layer 12 includes optical glue.

In the embodiment of the present application, the first support portion 13 is used to support the display unit 201 to prevent the display unit 201 from being deformed along the direction perpendicular to the first back film layer 11 .

In some embodiments, the first support portion 13 is a single-layer structure; in other embodiments, the first support portion 13 is a multi-layer structure, which is not limited in this embodiment of the present application.

The embodiment of the present application does not specifically limit the material of the first support part 13. In some embodiments, part of the material of the first support part 13 includes a metal material. The elastic modulus of the metal material is relatively large, and the elastic deformation is relatively small. The effect is better.

In some embodiments, there is a gap between the orthographic projection of the first adhesive layer 12 on the first backing film layer 11 and the orthographic projection of the first support portion 13 on the first backing film layer 11, so as to prevent the stretchable substrate 1 from being stretched. Contact damage between the first adhesive layer 12 and the first supporting part 13 during the stretching process.

In the embodiment of the present application, the display substrate 2 includes a flexible display substrate 2. Referring to FIG. Referring to FIG. 2 , the connection unit 202 connects two adjacent display units 201 respectively; the hollow area 203 deforms during the stretching process of the display substrate 2 , realizing the stretchable function of the display substrate 2 .

In the embodiment of the present application, the display unit 201 includes at least one sub-pixel;

In some embodiments, the display unit 201 may include a sub-pixel, and the sub-pixel may be any one of a red sub-pixel, a green sub-pixel or a blue sub-pixel;

In other embodiments, the display unit 201 may include multiple sub-pixels. For example, the display unit 201 may include at least two sub-pixels of red sub-pixels, green sub-pixels or blue sub-pixels at the same time; or, the display unit 201 may also include only one kind of sub-pixels, for example: only include a plurality of red sub-pixels , or only include a plurality of green sub-pixels, or only include a plurality of blue sub-pixels. The details can be determined according to actual requirements.

The embodiment of the present application does not limit the specific structure of the light-emitting unit. In some embodiments, the light-emitting unit includes a first substrate 21 and a light-emitting device 22 arranged in layers; in other embodiments, the light-emitting unit further includes a touch layer 23 , at this time, the display panel is a touch display panel.

In the embodiment of the present application, the connection unit 202 may include a plurality of connection lines, for example, the connection lines include data lines, gate lines and the like.

The embodiment of the present application does not limit the shape of the cross-section of the connection unit 202 along the direction parallel to the first base 21 , which may be strip-shaped, circular, square, or the like. Figure 2 shows the bar as an example.

In the embodiment of the present application, as shown in FIG. 2, the hollow area 203 is located between two adjacent display units 201, or the hollow area 203 is located between the adjacent display units 201 and the connecting unit 202, or the hollow area 203 is located between two adjacent connecting units 202 . It should be noted that FIG. 2 is a simplified structural schematic diagram of the display substrate 2 , only the hollow area 203 is drawn, and the specific structures of the display unit 201 and the connection unit 202 are not drawn, and only the positions are marked for illustration.

The embodiment of the present application does not limit the shape of the cross section of the hollow area 203 along the direction parallel to the first substrate 21 .

In the embodiment of the present application, a first adhesive layer 12 and/or a first support portion 13 are included between the display unit 201 and the first back film layer 11;

For example, referring to FIG. 1 , part of the display unit 201 is bonded to the first back film layer 11 through the first adhesive layer 12, and part of the display unit 201 is connected to the first back film layer 11 through the first support part 13. or, referring to FIG. 6 , a first adhesive layer 12 and a first support portion 13 are included between part of the display unit 201 and the first back film layer 11 .

The embodiment of the present application does not specifically limit the part of the display unit 201 that overlaps with the orthographic projection of the first adhesive layer 12 on the first back film layer 11;

In some embodiments, the orthographic projection of the first adhesive layer 12 on the first back film layer 11 and the orthographic projection of the first display unit 204 on the first back film layer 11 overlap, and the first adhesive layer 12 is Ring;

In some other embodiments, the orthographic projection of the first adhesive layer 12 on the first back film layer 11 and the orthographic projection of part of the second display unit 205 on the first back film layer 11 overlap, and the first adhesive layer 12 are located in multiple separate areas.

Wherein, the first display unit 204 is located at the edge of the array, and the second display unit 205 is located inside the array.

In the embodiment of the present application, the orthographic projection of the first adhesive layer 12 on the first back film layer 11 overlaps the orthographic projection of part of the display unit 201 on the first back film layer 11;

For example, the orthographic projection of the first adhesive layer 12 on the first back film layer 11 is located within the orthographic projection of part of the display unit 201 on the first back film layer 11;

Alternatively, the orthographic projection of the first adhesive layer 12 on the first back film layer 11 coincides with the orthographic projection of part of the display unit 201 on the first back film layer 11 .

In some embodiments, as shown in FIG. 1 , there is a gap 101 between the connection unit 202 and the stretchable substrate 1 .

In the embodiment of the present application, the protective substrate 3 is used to protect the display substrate 2;

In some embodiments, the protective substrate 3 includes a protective layer 33, and the protective layer 33 covers the display substrate 2 for protecting the display substrate 2;

In some other embodiments, the protection substrate 3 includes an anti-reflection layer 31 , and the anti-reflection layer 31 covers the display substrate 2 for reducing reflection of ambient light.

The embodiment of the present application provides a display panel. On the one hand, the orthographic projection of the first adhesive layer 12 on the first back film layer 11 overlaps the orthographic projection of part of the display unit 201 on the first back film layer 11, Part of the display unit 201 is not bonded through the first adhesive layer 12 and the first back film layer 11. During the stretching process of the display panel, the display unit 201 that is not in contact with the first adhesive layer 12 and the connection unit 202 are not connected. By the adhesive force of the first adhesive layer 12, the stretching process is easier to realize, avoiding the damage of the film layer caused by the joint action of the adhesive force and the stretching force, and reducing the stress caused by the stress of the film layer in the display substrate 2. Concentrate on the probability of damage and improve the reliability of the display panel; The projection overlaps, and the first support part 13 supports part of the display unit 201, which reduces the degree of deformation of this part of the display unit 201 in the direction perpendicular to the first back film layer 11 during the stretching process, and improves the reliability of the display panel.

In at least one embodiment of the present application, referring to FIG. 1 , FIG. 3 and FIG. 4 , the first support part 13 includes a plurality of first support units 131 spaced apart from each other; The orthographic projection on is overlapped with the orthographic projection of part of the display unit 201 on the first back film layer 11 .

In the embodiment of the present application, the first support unit 131 is used to support the display unit 201 .

In the embodiment of the present application, preferably, the material of the first support unit 131 includes a material with a high elastic modulus. For example, the material of the first support unit 131 includes a metal material; the elastic deformation of the high elastic modulus material is small, and the supporting effect better.

In some embodiments, referring to FIG. 1, the orthographic projection of a first supporting unit 131 on the first back film layer 11 is located within the orthographic projection of a display unit 201 on the first back film layer 11; in other implementations In an example, referring to FIG. 6 , the orthographic projection of part of the first supporting unit 131 on the first back film layer 11 overlaps with the orthographic projection of a display unit 201 on the first back film layer 11; The orthographic projection of the first supporting unit 131 on the first back film layer 11 covers the orthographic projection of a display unit 201 on the first back film layer 11 . This embodiment of the present application does not specifically limit it.

In the display panel provided by the embodiment of the present application, the first support part 13 includes a plurality of first support units 131 spaced apart from each other, and the orthographic projection of the first support units 131 on the first back film layer 11 is related to the part of the display unit 201 at the The orthographic projection on a back film layer 11 overlaps, and the first support unit 131 can support this part of the display unit 201, reducing the degree of deformation of the display unit 201 perpendicular to the direction of the first back film layer 11 during the stretching process, and improving the display. panel reliability.

In at least one embodiment of the present application, referring to FIG. 1 , the first support part 13 further includes a first support layer 132, and the first support layer 132 is located between the first back film layer 11 and the first support unit 131; The orthographic projection of the support unit 131 on the first back film layer 11 falls within the orthographic projection of the first support layer 132 on the first back film layer 11 .

In the embodiment of the present application, the first support layer 132 is used to support the first support unit 131. Along the direction perpendicular to the first backing film layer 11, the sum of the thicknesses of the first support layer 132 and the first support unit 131 is equal to the thickness of the first support unit 131. A bonding layer 12 has equal thickness.

In some embodiments, referring to FIG. 1 , the first support layer 132 includes a third backing film layer. In other embodiments, referring to FIG. 6 , the first support layer 132 includes a second substrate;

In the case where the first support layer 132 includes a third back film layer, when preparing the stretchable substrate 11, the first back film layer 11 is first formed, and then the first adhesive layer 12 is formed on the first back film layer 11. and the third back film layer, and then prepare the first supporting unit 131 on the third back film layer;

In the case that the first support layer 132 includes a second base, when preparing the stretchable base 11, first form the second base, then form the first support unit 131 on the second base, and then apply the first back film layer 11 is attached on the side of the second base away from the first support unit 131 .

In the embodiment of the present application, the first support layer 132 is located between the first back film layer 11 and the first support unit 131 , which can reduce the thickness of the first support unit 131 and reduce the difficulty of preparing the first support unit 131 .

In at least one embodiment of the present application, referring to FIG. 4 , the shape of the orthographic projection of the first adhesive layer 12 on the first back film layer 11 is ring-shaped; The orthographic projection falls within the area enclosed by the orthographic projection on the first adhesive layer 12 and the first back film layer 11 .

In the embodiment of the present application, referring to FIG. 1 and FIG. 4 , the orthographic projection of the first adhesive layer 12 on the first back film layer 11 and the orthographic projection of the first light-emitting unit on the first back film layer 11 overlap at least partially. , wherein the first display unit 204 is located at the edge of the array arrangement;

In some embodiments, referring to FIG. 1 , the orthographic projection of the first support unit 131 on the first back film layer 11 and the orthographic projection of the second light emitting unit on the first back film layer 11 at least partially overlap;

In some other embodiments, referring to FIG. 6 , the orthographic projection of the first supporting unit 131 on the first back film layer 11 is at least at least the same as the orthographic projections of the first light emitting unit and the second light emitting unit on the first back film layer 11 respectively. partially overlapped.

In the embodiment of the present application, the shape of the orthographic projection of the first adhesive layer 12 on the first back film layer 11 is ring-shaped, which can reduce the probability of water vapor penetrating into the display substrate 2 from the first adhesive layer 12, and, in the display panel In the process of stretching, the display unit 201 and the connection unit 202 which are not in contact with the first adhesive layer 12 are not subjected to the adhesive force of the first adhesive layer 12, and the stretching process is easier to realize, avoiding the pressure between the adhesive force and the connecting unit 202. The damage of the film layer caused by the public action of the tensile force improves the reliability of the display panel

In at least one embodiment of the present application, referring to FIG. 6, the display unit 201 includes a plurality of first display units 204; the orthographic projection part of each first display unit 204 on the first back film layer 11 and the first adhesive layer The orthographic projection of 12 on the first back film layer 11 overlaps; the orthographic projection part of each first display unit 204 on the first back film layer 11 and the orthographic projection of the first supporting unit 131 on the first back film layer 11 Overlapping; there is a gap 102 between the first supporting unit 131 and the first bonding layer 12 .

In the embodiment of the present application, the first display unit 204 is located at the edge of the array, and the first adhesive layer 12 forms a ring around the edge of the array of display units 201 .

Wherein, the orthographic projection of the first display unit 204 can be divided into three parts, the first part is close to the edge of the array, the third part is close to the inside of the array, and the second part is located between the first part and the third part;

The orthographic projection of the first adhesive layer 12 on the first back film layer 11 coincides with the first part, and the orthographic projection of the first supporting unit 131 on the first back film layer 11 coincides with the third part.

In the embodiment of the present application, on the one hand, a part of the first display unit 204 is in contact with the first adhesive layer 12, and the other part is in contact with the first support unit 131, which reduces the stretching process of this part of the display unit along the direction perpendicular to the first The degree of deformation in the direction of the back film layer improves the reliability of the display panel; on the other hand, there is a gap 102 between the first support unit 131 and the first adhesive layer 12, which reduces the tension between the first support unit 131 and the first adhesive layer 12 during stretching. The contact probability of the first adhesive layer 12 further reduces the probability of contact damage between the first supporting unit 131 and the first adhesive layer 12 , improving the reliability of the display panel.

In at least one embodiment of the present application, referring to FIG. 7, the stretchable substrate 1 further includes:

The second back film layer 14 is located on the side of the first back film layer 11 away from the display substrate 2;

The second adhesive layer 15 is located between the second support layer 162 and the first backing film layer 11;

The second support part 16 is located between the second support layer 162 and the first back film layer 11;

The orthographic projection of the second adhesive layer 15 on the first back film layer 11 and the orthographic projection of the second supporting portion 16 on the first back film layer 11 do not overlap each other.

In the embodiment of the present application, the second back film layer 14 includes at least one of a buffer protection layer 33 and a heat dissipation layer;

Exemplarily, the buffer protection layer 33 includes a flexible foam layer, and the flexible foam layer has high compressibility and high resilience, which can effectively protect the display substrate 2;

The heat dissipation layer includes a calendered copper layer. The calendered copper layer is a copper layer that has been repeatedly rolled and stretched. It has good thermal conductivity and can realize the heat dissipation function.

In the embodiment of the present application, the second back film layer 14 is bonded to the display substrate 2 through the second bonding layer 15 .

The embodiment of the present application does not limit the material of the second bonding layer 15 , for example, the material of the second bonding layer 15 includes optical glue.

In the embodiment of the present application, the second support portion 16 is used to support the display unit 201 to prevent the display unit 201 from being deformed perpendicular to the second back film layer 14 .

In some embodiments, the second support portion 16 is a single-layer structure; in other embodiments, the second support portion 16 is a multi-layer structure, which is not limited in this embodiment of the present application.

The embodiment of the present application does not specifically limit the material of the second support part 16. In some embodiments, part of the material of the second support part 16 includes a metal material. The elastic modulus of the metal material is relatively large, and the elastic deformation is small. The effect is better.

In some embodiments, there is a gap between the orthographic projection of the second adhesive layer 15 on the second backing film layer 14 and the orthographic projection of the second support portion 16 on the second backing film layer 14, so as to prevent the stretchable substrate 1 from being stretched. During the stretching process, the second adhesive layer 15 and the second supporting part 16 are damaged by contact.

In some embodiments, the shape of the orthographic projection of the second adhesive layer 15 on the second backing film layer 14 is ring-shaped; the orthographic projection of the second supporting part 16 on the second backing film layer 14 falls into the Layer 15 is within the area enclosed by the orthographic projection on the second back film layer 14 .

In the embodiment of the present application, on the one hand, the second adhesive layer 15 is located between the second support layer 162 and the first back film layer 11; the second support portion 16 is located between the second support layer 162 and the first back film layer 11 Between; the orthographic projection of the second adhesive layer 15 on the first back film layer 11 and the orthographic projection of the second support portion 16 on the first back film layer 11 do not overlap each other, part of the first back film layer 11 and the first back film layer 11 The two adhesive layers 15 are not in contact with each other. During the stretching process of the display panel, the first back film layer not in contact with the second adhesive layer 15 is not subject to the adhesive force of the second adhesive layer 15, and the stretching process is more It is easy to realize, avoids the damage of the film layer caused by the common effect of adhesive force and tensile force, and improves the reliability of the display panel; on the other hand, the second supporting part 16 supports part of the first back film layer 11, reducing the The degree of deformation of this part of the first back film layer 11 along the direction perpendicular to the second back film layer 14 during the stretching process is reduced, thereby improving the reliability of the display panel.

In at least one embodiment of the present application, referring to FIG. 7 , the second support part 16 includes a second support unit 161 and a second support layer 162; the second support layer 162 is located at the second back film layer 14 close to the first back film layer 11 side; the second support unit 161 is located at the side of the second support layer 162 close to the first back film layer 11; the orthographic projection of the second support unit 161 on the first back film layer 11 falls into the second support layer 162 Within the orthographic projection on the first back film layer 11 .

In the embodiment of the present application, the second support unit 161 and the second support layer 162 are used to support the display unit 201 .

Along the direction perpendicular to the second back film layer 14 , the sum of the thicknesses of the second support layer 162 and the second support unit 161 is equal to the thickness of the second adhesive layer 15 .

Wherein, the material of the second support unit 161 includes a high elastic modulus material, for example, the material of the second support unit 161 includes a metal material; the elastic deformation of the high elastic modulus material is small, and the supporting effect is better.

In some embodiments, the second supporting part 16 includes a plurality of second supporting units 161 separated from each other, and the stretching effect of the stretchable substrate 1 is better; in other embodiments, the second supporting part 16 includes a first The manufacturing cost of the second support unit 161 and the second support unit 161 is relatively low.

The function of the second support layer 162 can be the same as the second back film layer 14, for example, the second support layer 162 and the second back film layer 14 can both include the buffer protection layer 33; or, the second support layer 162 and the second back film layer The functions of the film layer 14 can be different, for example, the second support layer 162 includes the buffer protection layer 33 , and the second back film layer 14 includes the heat dissipation layer. This embodiment of the present application does not specifically limit it.

In the embodiment of the present application, the second support unit 161 can support part of the display unit 201, reducing the deformation of the display unit 201 perpendicular to the direction of the second back film layer 14 during the stretching process, and improving the reliability of the display panel; the second support The layer 162 is located between the second back film layer 14 and the second support unit 161 , which can reduce the thickness of the second support unit 161 and reduce the cost of manufacturing the second support unit 161 .

In at least one embodiment of the present application, referring to FIG. 1 , there is a gap 101 between the connecting unit 202 and the stretchable substrate 1 .

In some embodiments, the first supporting part 13 includes a plurality of first supporting units 131, and there is a gap 101 between the connecting unit 202 and the first back film layer 11 of the stretchable substrate 1;

In some other embodiments, the first supporting part 13 includes a first supporting unit 131 and a first supporting layer 132 , and there is a gap 101 between the connecting unit 202 and the first supporting layer 132 .

In the embodiment of the present application, there is a gap 101 between the connecting unit 202 and the stretchable substrate 1, so that during the stretching process of the display panel, the stress on the connecting unit 202 is small, and the probability of damage to the connecting unit 202 is low, and the display panel The reliability is better.

In at least one embodiment of the present application, the protective substrate 3 includes an anti-reflection layer 31 covering the display substrate 2 , a protective layer 33 covering the anti-reflective layer 31 , and a third bond between the anti-reflective layer 31 and the protective layer 33 layer 32;

Wherein, referring to FIG. 1 or FIG. 7, the orthographic projection of the antireflection layer 31 on the first back film layer 11 overlaps with the orthographic projection of the display substrate 2 on the first back film layer 11,

Or, referring to FIG. 5 or FIG. 8 , the orthographic projection of the antireflection layer 31 on the first back film layer 11 coincides with the first back film layer 11 .

In the embodiment of the present application, the anti-reflection layer 31 is used to reduce the reflectivity of the display panel to ambient light. For example, the anti-reflection layer 31 includes a color filter layer (Color Filter) or a circular polarizer;

Among them, the color filter layer can be patterned to form a hollow structure, and the tensile performance of the protective substrate 3 is better; the positive projection of the color filter layer on the first back film layer 11 and the display substrate 2 on the first back film layer 11 Orthographic overlap on .

The entire surface of the circular polarizer is attached to the display substrate 2 , the manufacturing process is simple, and the manufacturing cost is low; the orthographic projection of the circular polarizer on the first back film layer 11 coincides with the first back film layer 11 .

The embodiment of the present application does not limit the material of the third bonding layer 32 , for example, the material of the third bonding layer 32 includes optical glue.

In some embodiments, protective layer 33 includes at least one protective sublayer;

For example, the protective layer 33 includes a protective sublayer, for example, the protective sublayer includes an organic protective sublayer or an inorganic protective sublayer;

For another example, the protective layer 33 includes multiple protective sublayers. Exemplarily, the protective layer 33 includes at least one organic protective sublayer and at least one inorganic protective sublayer, multiple inorganic protective sublayers, or multiple organic protective sublayers.

In the display panel provided in the embodiment of the present application, the protective substrate 3 includes an anti-reflection layer 31 covering the display substrate 2 , a protective layer 33 covering the anti-reflection layer 31 , and a third adhesive layer between the anti-reflection layer 31 and the protective layer 33 32; the reflection of the display panel to ambient light can be reduced, and the display effect of the display panel can be improved; in addition, the positive projection of the antireflection layer 31 on the first back film layer 11 and the positive projection of the display substrate 2 on the first back film layer 11 The projection overlaps, the anti-reflection layer 31 includes a plurality of hollow areas 203, which improves the stretchability of the display panel, or, the orthographic projection of the anti-reflection layer 31 on the first back film layer 11 overlaps with the first back film layer 11, The preparation cost of the anti-reflection layer 31 is relatively low, which reduces the preparation cost of the display panel.

An embodiment of the present application provides a display device, including the above-mentioned display panel.

Exemplarily, the display device includes any one of an OLED display device, a Micro OLED micro display device, and a Mini LED micro display device.

The touch display device may be a touch display panel, and any product or component with a display function such as a TV, a digital camera, a mobile phone, a tablet computer, etc. including the touch display panel. In the display device provided by the embodiment of the present application, the damage rate of the film layer is low during the stretching process, and the reliability of the display device is high.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims (10)

1. A display panel, comprising:

a stretchable substrate comprising a first backsheet layer, a first tie layer and a first support on the first backsheet layer; the orthographic projection of the first bonding layer on the first back film layer and the orthographic projection of the first supporting part on the first back film layer are not overlapped with each other;

the display substrate is positioned on one side of the first bonding layer and the first supporting part far away from the first back film layer, and comprises a plurality of display units which are separated from each other, a connecting unit positioned between two adjacent display units, and a hollow area positioned between the display units and the connecting unit;

a protective substrate covering the display substrate;

wherein, the orthographic projection of the first bonding layer on the first back film layer overlaps with the orthographic projection of part of the display unit on the first back film layer, and the orthographic projection of the supporting part on the first back film layer overlaps with at least the orthographic projection of part of the display unit on the first back film layer.

2. The display panel of claim 1, wherein the display panel comprises,

the first support part comprises a plurality of first support units which are separated from each other; the front projection of the first support unit on the first back film layer overlaps with the front projection of a part of the display unit on the first back film layer.

3. The display panel of claim 2, wherein the display panel comprises,

the first support part further comprises a first support layer, and the first support layer is positioned between the first back film layer and the first support unit;

the orthographic projection of the first support unit on the first back film layer falls into the orthographic projection of the first support layer on the first back film layer.

4. The display panel of claim 2, wherein the display panel comprises,

the orthographic projection of the first bonding layer on the first back film layer is annular;

the orthographic projection of the first supporting part on the first back film layer falls into an area surrounded by orthographic projection of the first bonding layer on the first back film layer.

5. The display panel of claim 4, wherein the display unit comprises a plurality of first display units; a partial area of the orthographic projection of each first display unit on the first back film layer is overlapped with the orthographic projection of the first bonding layer on the first back film layer; a partial area of the orthographic projection of each first display unit on the first back film layer is overlapped with the orthographic projection of the first support unit on the first back film layer;

wherein, the first supporting unit and the first bonding layer have a gap therebetween.

6. The display panel of claim 1, wherein the stretchable substrate further comprises:

the second back film layer is positioned on one side of the first back film layer away from the display substrate;

a second tie layer located between the second support layer and the first backing layer;

a second support located between the second support layer and the first back film layer;

the orthographic projection of the second bonding layer on the first back film layer and the orthographic projection of the second supporting part on the first back film layer are not overlapped.

7. The display panel of claim 6, wherein the display panel comprises,

the second supporting part comprises a second supporting unit and a second supporting layer;

the second support layer is positioned on one side of the second back film layer close to the first back film layer;

the second supporting unit is positioned on one side of the second supporting layer close to the first back film layer;

the orthographic projection of the second support unit on the first back film layer falls into the orthographic projection of the second support layer on the first back film layer.

8. The display panel of claim 1, wherein the connection unit and the stretchable substrate have a gap therebetween.

9. The display panel of claim 1, wherein the display panel comprises,

the protective substrate includes an anti-reflection layer covering the display substrate, a protective layer covering the anti-reflection layer, and a third adhesive layer between the anti-reflection layer and the protective layer;

wherein the front projection of the anti-reflection layer on the first back film layer and the front projection of the display substrate on the first back film layer overlap,

or, the orthographic projection of the anti-reflection layer on the first back film layer is overlapped with the first back film layer.

10. A display device comprising the display panel according to any one of claims 1-9.