CN111403464A

CN111403464A - Display panel, preparation method of display panel and display device

Info

Publication number: CN111403464A
Application number: CN202010237114.3A
Authority: CN
Inventors: 千必根
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-07-10

Abstract

The embodiment of the invention relates to the technical field of display, and discloses a display panel, a preparation method of the display panel and a display device, wherein the display panel is provided with a display area and a non-display area, and comprises the following components: the display panel comprises a first substrate, a touch layer, a color resistance layer and a hardening layer, wherein the first substrate, the touch layer, the color resistance layer and the hardening layer are sequentially stacked, and the hardening layer covers the color resistance layer and at least partially covers the non-display area. The display panel, the preparation method of the display panel and the display device provided by the invention can reduce the film thickness of the display panel and improve the bending performance of the display panel.

Description

Display panel, preparation method of display panel and display device

Technical Field

The embodiment of the invention relates to the technical field of display, in particular to a display panel, a preparation method of the display panel and a display device.

Background

In the prior art, in order to realize double-sided lamination of a screen body, OCA optical glue is often adopted to bond a polarizing film on a touch layer, however, the bonding function of the OCA optical glue is not ideal, a colloid deformation phenomenon is easily generated when an O L ED display device is bent, and the bending performance of the O L ED display device is influenced.

The method for improving the bending performance of the O L ED display device in the prior art is desired to be improved, and therefore, there is a need to provide a new display panel and a new display device to solve the above problems.

Disclosure of Invention

An object of embodiments of the present invention is to provide a display panel, a method for manufacturing the display panel, and a display device, which can reduce the thickness of a film layer of the display panel and improve the bending performance of the display panel.

To solve the above technical problem, an embodiment of the present invention provides a display panel having a display region and a non-display region, the display panel including: the display panel comprises a first substrate, a touch layer, a color resistance layer and a hardening layer, wherein the first substrate, the touch layer, the color resistance layer and the hardening layer are sequentially stacked, and the hardening layer covers the color resistance layer and at least partially covers the non-display area.

In addition, display panel still includes the barricade, the barricade sets up non-display area territory, the sclerosis layer covers the barricade. By arranging the retaining wall, water vapor in the air can be prevented from entering the display panel along the direction vertical to the thickness direction of the display panel, so that devices in the display panel are protected from being corroded by the water vapor; because the barricade is the convex structure, covers the barricade through setting up the sclerosis layer, can increase the area covered of sclerosis layer in the non-display area to further ensure the look and hinder the layer and can not drop, more stable fixed look hinders the layer.

In addition, the barricade is including being close to the bottom surface of first base plate, with the top surface that the bottom surface set up relatively, the barricade still includes certainly the top surface to the sunken recess of bottom surface. When display panel buckled, the barricade will receive the external force of buckling, and deformation will take place for the recess this moment to the external force of buckling that receives the barricade shifts, also can release the stress that barricade self received simultaneously, thereby avoided display panel to buckle the in-process and keep off the wall and take place the fracture, improved display panel's encapsulation effect.

In addition, the retaining wall comprises a first retaining wall and a second retaining wall, the second retaining wall is arranged on one side, away from the display area, of the first retaining wall, and the height of the second retaining wall is larger than that of the first retaining wall.

In addition, the display panel further comprises a second substrate, the second substrate is arranged between the color resistance layer and the hardening layer, and the first substrate and the second substrate are made of flexible materials.

In addition, the second substrate is a patterned substrate, and the shape of the patterned substrate is the same as that of the color resistance layer.

In addition, the color resistance layer comprises a plurality of color resistance units and a black matrix, and the black matrix is arranged between the adjacent color resistance units.

In addition, the color resistance unit comprises a light incident surface far away from the touch layer, and the light incident surface is a concave surface. Through the arrangement of the structure, the incident angle of external light after penetrating through the color resistance unit can be increased, most of light can be absorbed by the black matrix after being reflected, the reflectivity of the surface of the color resistance layer is further reduced, and the contrast of the display panel is improved.

The embodiment of the invention also provides a preparation method of the display panel, which comprises the following steps: forming a touch layer on a first substrate, wherein the first substrate comprises a first area and a second area, and the touch layer is located in the first area; forming a color resistance layer on one side of the touch layer, which is far away from the first substrate; and forming a hardened layer on one side of the color resistance layer, which is far away from the touch layer, wherein the hardened layer at least partially covers the second area.

The embodiment of the invention also provides a display device which comprises the display panel.

Compared with the prior art, the implementation mode of the invention has the following advantages:

through setting up the sclerosis layer on the color resistance layer, and the sclerosis layer at least part covers the non-display area, on the one hand make the color resistance layer press from both sides and locate between touch-control layer and sclerosis layer, the effect of fixed color resistance layer has been played, compare in using the viscose that thickness is far greater than the sclerosis layer and fixing the color resistance layer, can reduce display panel's rete thickness through the fixed color resistance layer of sclerosis layer, can not take place colloid (viscose promptly) deformation phenomenon when display panel buckles again, make fixed firm between each rete of display panel, display panel's bending performance has been improved; on the other hand, the water vapor in the air can be prevented from entering the display area from the non-display area along the direction vertical to the thickness direction of the display panel, so that the devices in the display panel are protected from being corroded by the water vapor.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic structural diagram of a display panel according to a first embodiment of the present invention;

fig. 2 is a top view of a display panel provided in accordance with a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a display panel according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a display panel provided in accordance with a first embodiment of the present invention;

FIG. 5 is a schematic diagram of a display panel according to a first embodiment of the present invention;

fig. 6 is a schematic structural diagram of a display panel provided in accordance with the first embodiment of the present invention;

fig. 7 is a schematic structural diagram of a display panel provided in accordance with a second embodiment of the present invention;

fig. 8 is a flowchart of a method of manufacturing a display panel according to a third embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present invention in its various embodiments. However, the technical solution claimed in the present invention can be implemented without these technical details and various changes and modifications based on the following embodiments.

The first embodiment of the present invention relates to a display panel 100, which has a specific structure as shown in fig. 1 and 2, and includes:

the display device comprises a display area 101 and a non-display area 102, wherein the first substrate 1, a touch layer 2, a color resistance layer 3 and a hardening layer 4 are sequentially stacked, and the hardening layer 4 covers the color resistance layer 3 and at least partially covers the non-display area 102.

It should be noted that the non-display area 102 shown in fig. 2 is disposed around the display area 101, and in practical applications, the non-display area 102 may be disposed side by side with the display area 101, and the relative positional relationship between the display area 101 and the non-display area 102 is not specifically limited in this embodiment. In addition, the non-display area 102 and the display area 101 shown in fig. 2 are both rectangular, and in practical applications, the non-display area 102 and the display area 101 may also be in other shapes, such as a circle, a semicircle, a triangle, and the like, and the shape of the non-display area 102 and the shape of the display area 101 are not specifically limited in this embodiment.

In practical applications, the first substrate 1 may be formed of a polymer material such as imide (PI), Polycarbonate (PC), Polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP). The flexible substrate may be transparent, translucent, or opaque to provide support for the formation of various film layers disposed thereon.

Specifically, the material of the hardened layer 4 is preferably siloxane, and other materials with higher hardness may also be used, and the material of the hardened layer 4 is not specifically limited in this embodiment; the thickness of the hardened layer 4 is preferably 50 nm to 100 nm, and this thickness range can ensure that the color resistance layer 3 can be stably fixed between the hardened layer 4 and the touch layer 2, and can also effectively reduce the film thickness of the display panel 100, it can be understood that the embodiment does not specifically limit the film thickness of the hardened layer 4, and the hardened layers 4 with different thicknesses can be selected according to actual requirements.

Compared with the prior art, the embodiment of the invention has the advantages that the hardening layer 4 is arranged on the color resistance layer 3, and at least part of the hardening layer 4 covers the non-display area 102, so that the color resistance layer 3 is clamped between the touch layer 2 and the hardening layer 4, the effect of fixing the color resistance layer 3 is achieved, compared with the method of fixing the color resistance layer 3 by using glue with the thickness far greater than that of the hardening layer 4, the thickness of the film layer of the display panel 100 can be reduced by fixing the color resistance layer 3 by using the hardening layer 4, the phenomenon of glue (namely glue) deformation can be avoided when the display panel 100 is bent, the fixing among the film layers of the display panel 100 is stable, and the bending performance of the display panel 100 is improved; on the other hand, moisture in the air can be prevented from entering the display region 101 from the non-display region 102 in a direction perpendicular to the thickness direction of the display panel 100, thereby protecting the devices in the display panel 100 from the moisture.

It can be understood that, when the O L ED device of the display panel 100 operates, electrons need to be injected from the cathode, the work function of the cathode is required to be as low as possible, but the cathode is usually made of metal materials such as aluminum, magnesium, calcium, silver, etc., and the chemical property of the cathode is relatively active and is very reactive to moisture and oxygen permeating into the cathode, in addition, moisture and oxygen also chemically react with the hole transport layer and the electron transport layer of the O L ED device, and these reactions all cause the O L ED device to fail, therefore, the O L ED device is effectively encapsulated, and the functional layers of the O L ED device are sufficiently separated from moisture, oxygen, etc. in the atmosphere, so that the service life of the O L ED device can be greatly prolonged, and the service life of the display panel 100 can be prolonged.

Referring to fig. 3, the display panel 100 further includes a retaining wall 5, the retaining wall 5 is disposed in the non-display region 102, and the hardened layer 4 covers the retaining wall 5. By arranging the retaining wall 5, water vapor in the air can be prevented from entering the display panel 100 along the direction Y vertical to the thickness direction X of the display panel, so that devices in the display panel 100 are protected from being corroded by the water vapor; because the barricade is convex structure, through setting up sclerosis layer 4 and cover barricade 5, can increase the area of coverage of sclerosis layer 4 in non-display area 102 to further ensure that colour resistance layer 3 can not drop, more stable fixed colour resistance layer 3.

Specifically, the retaining wall 5 may be made of CPI (transparent polyimide), PI (polyimide), PET (high temperature polyester), PEN (polyethylene naphthalate), polycarbonate, polyethersulfone, polyethylene terephthalate, polyarylate, glass fiber reinforced plastic, and the like, and the retaining wall 5 may be made of different materials according to actual requirements without specifically limiting the material of the retaining wall 5 in this embodiment. The retaining wall 5 is made of inorganic materials, so that the sealing performance of the retaining wall 5 is good, and the packaging effect of the display panel 100 is further improved.

Referring to fig. 4, the retaining wall 5 includes a bottom surface 501 close to the first substrate 1, and a top surface 502 opposite to the bottom surface 501, and the retaining wall 5 further includes a groove 50 recessed from the top surface 502 to the bottom surface 501. By forming the groove 50 on the retaining wall 5, when the display panel 100 is bent, the retaining wall 5 is subjected to a bending external force, and at the moment, the groove 50 is deformed, so that the bending external force applied to the retaining wall 5 is transferred, and simultaneously, the stress applied to the retaining wall 5 per se can be released, so that the retaining wall 5 is prevented from being broken in the bending process of the display panel 100, and the packaging effect of the display panel 100 is improved; in addition, because the hardened layer 4 covers the retaining wall 5, the design of the structure can further increase the coverage area of the hardened layer 4 in the non-display area 102, thereby further ensuring that the color resistance layer 3 does not fall off and fixing the color resistance layer 3 more stably.

It should be noted that, in the present embodiment, the number of the grooves 50 may be multiple, so as to further prevent the retaining wall 5 from breaking during the bending process of the display panel 100; the groove depth of the groove is between 1 micron and 2 microns, and the groove 50 with such a groove depth can ensure that the moisture and oxygen in the air can not enter the display panel 100 while ensuring that the external bending force and stress on the retaining wall 5 are released.

Referring to fig. 5, the retaining wall 5 includes a first retaining wall 51 and a second retaining wall 52, the second retaining wall 52 is disposed on a side of the first retaining wall 51 away from the display region 101, and the height of the second retaining wall 52 is greater than the height of the first retaining wall 51. That is, the second retaining wall 52 is closer to the edge of the display panel 100 than the first retaining wall 51, and the height of the second retaining wall 52 is greater than that of the first retaining wall 51, so that the coverage area of the hardened layer 4 in the non-display area 102 is further increased by the arrangement of the structure, and the packaging effect of the display panel 100 is further ensured. Specifically, the height range of the first retaining wall 51 is 3 micrometers to 5 micrometers, and the first retaining wall 51 with the height range can isolate water and oxygen, prevent the display device layer from being corroded, enable the thickness of the display panel 100 to be within a reasonable range, and avoid the influence on the bending performance of the display panel 100 due to the excessively thick thickness; the height range of the second wall 52 is 5 micrometers to 8 micrometers, and the height of the second wall 52 in this height range can be ensured to be greater than that of the first wall 51, so that the thickness of the display panel 100 is within a reasonable range, and the influence of the excessive thickness of the display panel 100 on the bending performance of the display panel is avoided.

Preferably, since the bending stress of the central region of the display panel is larger and the bending stress of the edge region is smaller during the bending process of the display panel 100, and the first retaining wall 51 is closer to the central region of the display panel 100 than the second retaining wall 52, the bending stress of the second retaining wall 52 is smaller than the bending stress of the first retaining wall 51 during the bending process of the display panel 100, in this embodiment, the curvature radius of the side wall of the second retaining wall 52 may be set to be larger than the curvature radius of the side wall of the first retaining wall 51, that is, the curvature degree of the second retaining wall 52 is smaller than the curvature degree of the first retaining wall 51, and the packaging effect of the display panel 100 can also be ensured.

Referring to fig. 6, the color resist layer 3 in this embodiment includes a plurality of color resist units 31 and a black matrix 32, and the black matrix 32 is disposed between adjacent color resist units 31. Specifically, the material of the color resist units 31 includes transparent photoresist and color dyes, the color dyes include red dye, green dye, blue dye, and the like, and each color resist unit 31 may include a color dye of one color. Further, after preparing the material for preparing the color resistance unit 31, the color resistance unit 31 may be prepared by a printing process or a yellow light process, and the photoresist used in the present embodiment may be any high transmittance optical material, such as a thermosetting or UV curing material, a liquid optical transparent adhesive, and the like. In addition, the surface of the black matrix 32 in this embodiment may be coated with a black light absorbing material, such as a colorant using a black pigment or dye, titanium black, lignin black, a composite oxide pigment such as iron/manganese, a combination of the above pigments, or the like, or the entire black matrix 32 may be made of a black light absorbing material, thereby further improving the light absorbing effect.

Preferably, the thickness of the color-resisting unit 31 is between 10 micrometers and 20 micrometers, and the color-resisting unit 31 with such a thickness range can ensure that light incident into the light-emitting unit from the outside is converted into corresponding target light after passing through the color-resisting unit 31 (for example, if the light-emitting unit emits red light, the color-resisting unit corresponding to the light-emitting unit converts the light from the outside into red light), thereby ensuring the light-emitting effect of the display panel 100. It is understood that the thickness of the color resistance unit 31 is preferably 14 micrometers, 15 micrometers, 16 micrometers or 17 micrometers, the thickness of the color resistance unit 31 is not particularly limited in this embodiment, and color resistance units 31 with different thicknesses may be prepared according to actual requirements.

Preferably, the color resistance unit 31 includes a light incident surface 310 far away from the touch layer 2, and the light incident surface 310 is a concave surface. Through the arrangement of the structure, the incident angle of the external light after penetrating through the color resistance unit 31 can be increased, most of the light can be absorbed by the black matrix 32 after being reflected, the reflectivity of the surface of the color resistance layer 3 is further reduced, and the contrast of the display panel 100 is improved.

Specifically, the display panel 100 further includes a display device layer 7 and an encapsulation layer 8, the display device layer 7 includes a planarization layer, a pixel defining layer, an organic light emitting layer, a cathode and an anode, the planarization layer may be an organic layer formed of acryl, Polyimide (PI), benzocyclobutene (BCB), or the like, the anode may be a film formed of an indium tin oxide transparent conductive film including other various functional layers, such as at least one of a hole injection layer (HI L), a hole transport layer (HT L), an electron transport layer (ET L), and an electron injection layer (EI L), the cathode is a transparent electrode formed of a compound such as lithium (L i), calcium (Ca), lithium fluoride/calcium (L iF/Ca), lithium fluoride/aluminum (L iF/Al), aluminum (Al), magnesium (Mg), or a combination thereof, the encapsulation layer 8 may be formed by a coating method such as CVD (chemical vapor deposition) or sputtering, and the encapsulation layer 8 functions to block water and oxygen, thereby effectively preventing air from contacting the display device layer 7.

The second embodiment of the present invention relates to a display panel 200, and the second embodiment is a further improvement on the first embodiment, and the main improvements are as follows: in the present embodiment, as shown in fig. 7, the color filter further includes a second substrate 6, the second substrate 6 is disposed between the color resist layer 3 and the cured layer 4, and the first substrate 1 and the second substrate 6 are both made of flexible materials. Because the look hinders layer 3 and is the rigidity material usually, sclerosis layer 4 also is the rigidity material, setting through this kind of structure, make look hinder layer 3 can not direct and sclerosis layer 4 contact, avoided "when display panel takes place to buckle, the look of rigidity material hinders layer 3 if with rigidity material's sclerosis layer 4 direct contact, make the emergence of the condition of look hindering layer 3 damage easily, make look hinder layer 3 not fragile because the second base plate contact with flexible material when display panel buckles, display panel 200's reliability has been improved.

Specifically, in the present embodiment, the material of the second substrate 6 is CPI. The CPI is plastic Colorless Polyimide (Colorless Polyimide), has the characteristics of high heat resistance, high reliability, flexure resistance, low density, low dielectric constant, low CTE, easy realization of micro-pattern circuit processing and the like, has larger deformation amount and strong bending performance, and can return to the initial state after being bent for a long time. In this way, the light emitting performance of the display device under the second substrate 6 is not affected by the color of the film layer of the second substrate 6, thereby improving the display effect of the display panel 100. The material of the first substrate 1 comprises plastic and the like, preferably, the material of the first substrate 1 is also CPI, and the defect of light yellow or dark yellow color of the traditional PI film is overcome because the CPI is a transparent material. Note that the material of the first substrate 1 may be PI (polyimide), PEN (polyethylene naphthalate), PET (polyethylene terephthalate), COP (cyclic polyolefin), or TAC (triacetyl cellulose film), and the material of the second substrate 6 may be PI, PEN, PET, COP, or TAC, and the present embodiment does not specifically limit the material of the first substrate 1 and the second substrate 6, and only needs to be a flexible material.

Preferably, the thickness of the first substrate 1 is 5 to 20 micrometers. Second substrate 6 the thickness of the first substrate is 5 to 50 micrometers. It is understood that, since the thickness of the CPI film is smaller than that of the glass substrate, the thickness of the display panel 100 as a whole can be effectively reduced by using the CPI film as the first substrate 1. It should be noted that, the thickness ratio of the first substrate 1 to the second substrate 6 in the present embodiment is not particularly limited, because the display panel 200 is bonded with other films, and the optimal film thickness needs to be determined by overall matching.

More preferably, the second substrate 6 is a patterned substrate, and the shape of the patterned substrate is the same as that of the color resist layer 3. Through the arrangement of the structure, the second substrate 6 can be firstly patterned in the preparation process of the display panel 100, and then the color resistance layer 3 is directly formed on the patterned substrate, so that the preparation method of the display panel 100 is diversified, the preparation process is more flexible, and the second substrate 6 can bear larger stress.

It can be understood that the present embodiment can achieve the same technical effects as the first embodiment, and the related technical details mentioned in the first embodiment are still valid in the present embodiment, and are not described herein again in order to reduce the repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.

A third embodiment of the present invention relates to a method of manufacturing a display panel, as shown in fig. 8, including the steps of:

s301: a touch layer is formed on the first substrate.

Specifically, the first substrate includes a first region and a second region, and the touch layer is located in the first region, and the embodiment may form the touch layer on the first substrate by using a photolithography technique, which specifically includes: 1. plating a metal film on the first substrate; 2. coating a layer of photoresist on the surface of the metal film; 3. exposing and developing the photoresist to obtain a patterned photoresist; 4. and etching the exposed metal film (i.e. the metal film without the photoresist thereon), which can be wet etching or dry etching, and removing the patterned photoresist layer after etching to obtain the touch layer.

It is worth mentioning that before the touch layer is formed on the first substrate 1, a TFT layer, a display device layer and an encapsulation layer are also formed on the first substrate. In this embodiment, a TFT layer may be formed on the first substrate by a photolithography technique, which includes: 1. plating a metal film on the first substrate; 2. coating a layer of photoresist on the surface of the metal film; 3. exposing and developing the photoresist to obtain a patterned photoresist; 4. and etching the exposed metal film (i.e. the metal film without the photoresist on the upper part) by a wet etching method or a dry etching method, and removing the patterned photoresist layer after etching to obtain the TFT layer.

The planarization layer may be an organic layer formed of acryl, Polyimide (PI), benzocyclobutene (BCB), or the like, the anode may be at least one of a hole injection layer (HI L), a hole transport layer (HT L), an electron transport layer (ET L), and an electron injection layer (EI L), the cathode is a transparent electrode, and a film layer formed of a compound such as lithium (L i), calcium (Ca), lithium fluoride/calcium (L iF/Ca), lithium fluoride/aluminum (L iF/Al), aluminum (Al), magnesium (Mg), or a combination thereof.

It can be understood that the encapsulation layer can be made by coating methods such as CVD (chemical vapor deposition) or sputtering, and the encapsulation layer plays a role in isolating water and oxygen and can effectively prevent air from contacting with the display device layer.

S302: and forming a color resistance layer on one side of the touch layer far away from the first substrate.

Specifically, the color resist layer includes a color resist unit and a black matrix, and in this embodiment, a black matrix having holes may be formed on the touch layer by processes such as film pasting, photolithography, laser processing, inkjet printing, 3D printing, screen printing, and micro-contact printing, and then a photoresist mixed with red, green, and blue dyes (i.e., a color resist layer) may be prepared in the holes by a printing process or a yellow light process.

S303: and forming a hardening layer on one side of the color resistance layer, which is far away from the touch layer.

Specifically speaking, the hardened layer at least partially covers the second region, and this embodiment can be on the color resistance layer with the regional interior coating hardening material liquid of second, then toast, solidification treatment to it to form the hardened layer. The material of the hardening material liquid is preferably siloxane, and other materials with high hardness may be used, and the material of the hardening material liquid is not particularly limited in this embodiment; the thickness of sclerosis layer is preferably 50 nanometers to 100 nanometers, and this kind of thickness scope can ensure that the color resistance layer can be stable be fixed in between sclerosis layer and the touch-control layer, also can effectively reduce display panel's film thickness, and it can be understood that this embodiment also does not specifically limit to the film thickness on sclerosis layer, can prepare the sclerosis layer of different thickness according to actual need.

Compared with the prior art, the hardening layer is arranged on the color resistance layer, and at least part of the hardening layer covers the non-display area, so that the color resistance layer is clamped between the touch layer and the hardening layer to play a role of fixing the color resistance layer; on the other hand, the water vapor in the air can be prevented from entering the display area from the non-display area along the direction vertical to the thickness direction of the display panel, so that the devices in the display panel are protected from being corroded by the water vapor.

A fourth embodiment of the present invention relates to a display device including the display panel provided in the foregoing embodiments.

It should be understood that this embodiment is an example of the apparatus corresponding to the first embodiment, and may be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims

1. A display panel having a display region and a non-display region, the display panel comprising: the display panel comprises a first substrate, a touch layer, a color resistance layer and a hardening layer, wherein the first substrate, the touch layer, the color resistance layer and the hardening layer are sequentially stacked, and the hardening layer covers the color resistance layer and at least partially covers the non-display area.

2. The display panel according to claim 1, wherein the display panel further comprises a retaining wall, the retaining wall is disposed in the non-display region, and the hardened layer covers the retaining wall.

3. The display panel according to claim 2, wherein the retaining wall includes a bottom surface adjacent to the first substrate and a top surface disposed opposite to the bottom surface, and the retaining wall further includes a groove recessed from the top surface toward the bottom surface.

4. The display panel according to claim 2, wherein the retaining walls include a first retaining wall and a second retaining wall, the second retaining wall is disposed on a side of the first retaining wall away from the display area, and a height of the second retaining wall is greater than a height of the first retaining wall.

5. The display panel of claim 1, further comprising a second substrate disposed between the color resist layer and the cured layer, wherein the first substrate and the second substrate are both made of flexible materials.

6. The display panel according to claim 5, wherein the second substrate is a patterned substrate, and a shape of the patterned substrate is the same as a shape of the color resist layer.

7. The display panel according to claim 1, wherein the color-resist layer includes a plurality of color-resist cells and a black matrix disposed between the adjacent color-resist cells.

8. The display panel of claim 7, wherein the color-resisting unit comprises a light incident surface far away from the touch layer, and the light incident surface is a concave surface.

9. A method for manufacturing a display panel, comprising:

forming a touch layer on a first substrate, wherein the first substrate comprises a first area and a second area, and the touch layer is located in the first area;

forming a color resistance layer on one side of the touch layer, which is far away from the first substrate;

and forming a hardened layer on one side of the color resistance layer, which is far away from the touch layer, wherein the hardened layer at least partially covers the second area.

10. A display device characterized by comprising the display panel according to any one of claims 1 to 8.