CN112086578B

CN112086578B - Display panel and display device

Info

Publication number: CN112086578B
Application number: CN202010961703.6A
Authority: CN
Inventors: 孙佳佳
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2022-05-31
Anticipated expiration: 2040-09-14
Also published as: CN112086578A

Abstract

The application discloses display panel and display device thereof, display panel include the plane district and connect in the curved surface district in plane district, display panel includes: a plurality of pixels located within the curved region; and, be located the light adjustment structure in the curved surface district, the light that the pixel sent passes through the light adjustment structure becomes positive emergent light, the emergent direction of positive emergent light with the contained angle of plane district vertical direction is less than and predetermines the angle, predetermine the angle and equal to 60, in order to improve display panel and be in the problem of colour cast easily appears in the curved surface district.

Description

Display panel and display device

Technical Field

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

Background

Although the curved-surface screen display device can improve the screen occupation ratio of the display device, because the brightness attenuation degrees of the sub-pixels under different viewing angles are different, when a planar area of the display device has better display colors under a front viewing angle, the curved-surface area is not in the front viewing angle, and the brightness attenuation degrees of the sub-pixels under different viewing angles are different, so that the display colors of the curved-surface area and the planar area are different, and the color cast is caused in the curved-surface area.

Disclosure of Invention

The embodiment of the application provides a display panel and a display device, which can solve the problem that a curved screen display panel is prone to color cast in a curved area.

The embodiment of the application provides a display panel, including the plane district with connect in the curved surface district in plane district, display panel includes:

a plurality of pixels located within the curved region; and the number of the first and second groups,

lie in the light adjustment structure in curved surface district, wherein, the light that the pixel sent passes through the light adjustment structure becomes positive emergent light, the emergent direction of positive emergent light with plane district vertical direction's contained angle is less than and predetermines the angle, it equals 60 to predetermine the angle.

In some embodiments, the display panel further comprises:

the refractive index of the first medium layer is smaller than that of the second medium layer;

the light adjusting structure includes portions of the first dielectric layer and the second dielectric layer corresponding to the curved surface region.

In some embodiments, the light-modifying structure includes a plurality of first recesses and/or first protrusions located within the first dielectric layer and corresponding to the pixels, and a plurality of second protrusions and/or second recesses located within the second dielectric layer corresponding to the first recesses and/or first protrusions.

In some embodiments, the display panel further comprises a third dielectric layer; the light-modifying structure includes: the pixel structure comprises a plurality of first grooves which are positioned in the first medium layer and correspond to the pixels, a cavity formed by the second medium layer in the area corresponding to the plurality of first grooves, and a third medium layer positioned in the cavity.

In some embodiments, the refractive index of the third dielectric layer is equal to the refractive index of the second dielectric layer.

In some embodiments, the cross-section of the first and second grooves comprises at least one of a triangle, a sector.

In some embodiments, the first groove is a triangular groove having at least one oblique side that slopes from the curved region to the planar region of the display panel.

In some embodiments, the difference between the refractive index of the first dielectric layer and the refractive index of the second dielectric layer is greater than or equal to 0.1 and less than or equal to 0.8.

In some embodiments, the display panel further comprises an encapsulation layer, and the first dielectric layer and the second dielectric layer are located within the encapsulation layer.

The application also provides a display device which comprises the display panel.

The embodiment of the application provides a display panel and display device thereof, display panel include the plane district and connect in the curved surface district in plane district, display panel includes: a plurality of pixels located within the curved region; and, be located the light adjustment structure in the curved surface district, the light that the pixel sent passes through the light adjustment structure becomes positive emergent light, the emergent direction of positive emergent light with the contained angle of plane district vertical direction is less than and predetermines the angle, predetermine the angle and equal to 60, in order to improve display panel and be in the problem of colour cast easily appears in the curved surface district.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1A is a schematic structural diagram of a display panel according to an embodiment of the present application;

FIGS. 1B to 1K are schematic structural views of the display panel of FIG. 1A cut along A-A';

FIG. 1L is a schematic structural view of the display panel of FIG. 1A taken along line B-B';

FIGS. 2A-2B are enlarged views of a portion C of FIG. 1A;

FIGS. 2C to 2D are enlarged views of a portion D of FIG. 1A;

fig. 3A is a flowchart of a manufacturing process of a display panel according to an embodiment of the present disclosure;

fig. 3B to 3F are schematic views illustrating a process of manufacturing a display panel by using the manufacturing method shown in fig. 3A.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Specifically, please refer to fig. 1A, which is a schematic structural diagram of a display panel according to an embodiment of the present disclosure; as shown in fig. 1B to fig. 1K, which are schematic structural diagrams of the display panel in fig. 1A cut along a-a'; as shown in fig. 1L, which is a schematic structural view of the display panel in fig. 1A taken along B-B'; as shown in fig. 2A to 2B, which are partial enlarged views at C in fig. 1A, and fig. 2C to 2D, which are partial enlarged views at D in fig. 1A.

The embodiment of the present application provides a display panel, including a planar area 100a and a curved area 100b connected to the planar area 100a, the display panel includes:

a plurality of pixels 101 located within the curved region 100 b; and the number of the first and second groups,

lie in the structure 102 is adjusted in light in curved surface district 100b, wherein, the light 101a process that pixel 101 sent is adjusted the structure 102 through light and is become positive emergent light 102a, the emergent direction of positive emergent light 102a with planar district 100a vertical direction 100 c's contained angle alpha is less than and predetermines the angle, it equals 60 to predetermine the angle, so that curved surface district 100b with planar district 100a has similar display effect, thereby improves display panel is in the problem of colour cast easily appears in curved surface district 100 b.

Further, please continue to refer to fig. 1A and fig. 2A to fig. 2D, taking a direction 100c perpendicular to the planar area 100a as a center (that is, a position 100c represents 0 °), the light 101A emitted by the pixel 101 in the curved area 100b passes through the light adjusting structure 102 and is changed into the positive emergent light 102A from the oblique emergent light 102c having a certain inclination angle with the planar area 100a, and a value range of an included angle α between the emergent direction of the positive emergent light 102A and the perpendicular direction 100c of the planar area 100a is: (-60 °, +60 °), as shown in fig. 2C to 2D. Furthermore, the light 101a that the pixel 101 sent in the curved surface region 100b passes through the light adjusting structure 102 is changed into the emergent light 102D parallel to the emergent light 102b in the planar region 100a by the oblique emergent light 102C that has a certain inclination angle with the planar region 100a, as shown in fig. 2C-2D, namely the emergent direction of the emergent light 102a and the included angle α of the perpendicular direction 100C in the planar region 100a are equal to 0 °, so that the display panel is in the curved surface region 100b and the planar region 100a have the same display effect.

With continued reference to fig. 1B to fig. 1L, the display panel further includes:

a first dielectric layer 103 and a second dielectric layer 104 positioned on the first dielectric layer 103, wherein the refractive index n1 of the first dielectric layer 103 is smaller than the refractive index n2 of the second dielectric layer 104;

the light adjusting structure 102 includes portions of the first dielectric layer 103 and the second dielectric layer 104 corresponding to the curved surface region 100 b.

Specifically, the light adjusting structure 102 includes a plurality of first recesses 1031 and/or first protrusions 1032 located in the first medium layer 103 and corresponding to the pixels 101, and a plurality of second protrusions 1042 and/or second recesses 1041 located in the second medium layer 104 and corresponding to the first recesses 1031 and/or the first protrusions 1032.

The cross-sections of the first and

second recesses

1031, 1041 include at least one of a triangle and a sector, as shown in fig. 1B to 1L.

With reference to fig. 1B, when the light 101a emitted from the pixel 101 passes through the light adjusting structure 102, the light 101a emitted from the pixel 101 enters the second medium layer 104 from the first medium layer 103 at an incident angle θ 1; since the refractive index n1 of the first medium layer 103 is smaller than the refractive index n2 of the second medium layer 104, the light 101a emitted by the pixel 101 enters the optically dense medium equivalently from the optically thinner medium, the light 101a emitted by the pixel 101 is refracted in the second medium layer 104, the refraction angle θ 2 is smaller than the incident angle θ 1, and the light 101a emitted by the pixel 101 is shifted towards the normal (as shown by a dotted line), so that the forward-emitting light 102a is obtained, the display effect of the curved surface area 100b is similar to that of the planar area 100a, and the problem that the display panel is prone to color cast in the curved surface area 100b is solved.

To ensure the adjustment effect on the light 101a emitted by the pixel 101, the difference between the refractive index n1 of the first medium layer 103 and the refractive index n2 of the second medium layer 104 is greater than or equal to 0.1 and less than or equal to 0.8.

Further, the refractive index n1 of the first medium layer 103 is greater than or equal to 1 and less than or equal to 2; the refractive index n2 of the second dielectric layer 104 is greater than or equal to 1.5 and less than or equal to 2.5. Further, the refractive index n1 of the first medium layer 103 is greater than or equal to 1.3 and less than or equal to 1.8; the refractive index n2 of the second dielectric layer 104 is greater than or equal to 1.7 and less than or equal to 2.

The preparation material of the first dielectric layer 103 comprises acrylic or epoxy organic matter; the second dielectric layer 104 is made of inorganic materials such as silicon nitride and silicon oxynitride.

With reference to fig. 1B and fig. 1L, the first recess 1031 has at least a first edge 1033a and a second edge 1033B, and the first edge 1033a intersects with the second edge 1033B; further, the first side 1033a is perpendicular to the surface of the first medium layer 103, and the orthographic projection of the second side 1033b covers the pixel 101. Similarly, the first protrusion 1032, the second recess 1041 and the second protrusion 1042 also have the first edge 1033a and the second edge 1033 b.

Referring to fig. 1B and fig. 1L, the first recess 1031 is a triangular recess, and the triangular recess has at least one inclined edge inclined from the curved region 100B to the planar region 100a of the display panel. Wherein the oblique side is the second side 1033 b.

An included angle θ 3 between the first edge 1033a and the oblique edge is greater than 0 ° and less than 90 °; further, an angle θ 3 between the first side 1033a and the oblique side is complementary to the incident angle θ 1. The included angle θ 3 between the first edge 1033a and the inclined edge in the first recesses 1031 may be different or the same.

An included angle θ 3 between the first edge 1033a and the oblique edge may be determined according to the curvature of the curved surface region 100b, and will not be described herein again. The first edge 1033a and an included angle θ 3 between the oblique edges need to be matched with the refractive indexes of the first dielectric layer 103 and the second dielectric layer 104, so as to ensure that the light adjusting structure 102 has an adjusting effect on the light 101a emitted by the pixel 101.

Specifically, the refractive index n2 of the second dielectric layer 104 may be determined according to the refractive index n1 of the first dielectric layer 103 and the included angle θ 3 between the first edge 1033a and the oblique edge, and then the second dielectric layer 104 with the desired refractive index may be selected according to process parameters.

It is understood that, when the first recess 1031 is a triangular recess, the second protrusion 1042 is a triangular protrusion.

With continued reference to fig. 1D and 1F, when the cross-section of the first recess 1031 is fan-shaped, the cross-section of the second protrusion 1042 is also fan-shaped.

In fig. 1D and 1F, the first edge 1033a of the first recess 1031 is perpendicular to the surface of the first dielectric layer 103, and the second edge 1033b is arc-shaped. The second side 1033b may be an arc shape recessed toward the first dielectric layer 103, as shown in fig. 1D; or may be curved so as to project toward the second dielectric layer 104, as shown in fig. 1F.

Similarly, the situation can be obtained when the first protrusion 1032 is a triangular protrusion and the second recess 1041 is a triangular recess; and, the cross section of the first protrusion 1032 is fan-shaped, and the cross section of the second groove 1041 is also fan-shaped, as shown in fig. 1C, 1E and 1G.

The depth of the first recess 1031 is smaller than the thickness of the first dielectric layer 103, and the depth of the second recess 1041 is smaller than the thickness of the second dielectric layer 104.

With reference to fig. 1B to fig. 1L, the display panel further includes an encapsulation layer 105, and the first dielectric layer 103 and the second dielectric layer 104 are located in the encapsulation layer 105.

Specifically, the encapsulation layer 105 includes a stack of organic and inorganic layers, so the first dielectric layer 103 can serve as an organic layer in the encapsulation layer 105, and the second dielectric layer 104 can serve as an inorganic layer in the encapsulation layer 105, thereby reducing the thickness of the display panel.

In addition, the first dielectric layer 103 and the second dielectric layer 104 may not be located in the encapsulation layer 105, and those skilled in the art may set them at other positions of the display panel according to actual requirements, which is not described herein again.

With reference to fig. 1H to fig. 1J, the display panel further includes a third dielectric layer 106; the light-modifying structure 102 includes: a plurality of first recesses 1031 located in the first dielectric layer 103 and corresponding to the pixels 101, a cavity 1043 formed by the second dielectric layer 104 in a region corresponding to the plurality of first recesses 1031, and a third dielectric layer 106 located in the cavity 1043.

Further, the refractive index n3 of the third dielectric layer 106 is equal to the refractive index n2 of the second dielectric layer 104, so that the light 101a emitted by the pixel 101 is still kept as positive emergent light after being adjusted by the light adjusting structure 102.

It can be understood that if the light 101a that the pixel 101 sent is in the warp in the light adjusting structure 102a plurality of first recesses 1031 of the first dielectric layer 103 a plurality of second protrusions 1042 of the second dielectric layer 104 still can not become the positive emergent light (adjust excessively or adjust not in place) after adjusting, then the accessible the third dielectric layer 106 adjusts once more, so that the light 101a that the pixel 101 sent is through become after the light adjusting structure 102 adjusts the positive emergent light 102 a. Accordingly, the refractive index n3 of the third dielectric layer 106 may also be greater than or less than the refractive index n2 of the second dielectric layer 104.

In addition, the third dielectric layer 106 is disposed to avoid the problem that when the first dielectric layer 103 and the second dielectric layer 104 are located in the encapsulation layer 105, the second dielectric layer 104 is multiplexed with the inorganic layer in the encapsulation layer 105, the second dielectric layer 104 is thin, and the second recess 1041 or the second protrusion 1042 is not easily formed in the second dielectric layer 104, and the third dielectric layer 106 can planarize the second dielectric layer 104.

The material for forming the third dielectric layer 106 includes organic material. Further, the third dielectric layer 106 is made of an acrylic or epoxy organic material.

In fig. 1B to 1K, the curved surface area 100B is illustrated as being located on the left side of the planar area 100a, and similarly, the curved surface area 100B may also be located on the right side of the planar area 100 a; the light-modifying structures 102 in the curved region 100b on the right side of the planar region 100a are arranged in a central symmetry with the light-modifying structures 102 in the curved region 100b on the left side of the planar region 100a, as shown in fig. 1L. In fig. 1L, only the first recess 1031 is taken as a triangular recess, and the second protrusion 1042 is taken as a triangular protrusion for example, and in addition, the cross sections of the first recess 1031 and the second recess 1041 may be triangular, fan-shaped, and the like, which will not be described again.

a substrate 200, the substrate 200 comprising a rigid substrate and a flexible substrate; further, the preparation material of the substrate comprises glass, quartz, ceramic, plastic or polymer resin and the like; the polymer resin comprises at least one of polyether sulfone, polyacrylate, polyarylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyallyl ester, polyimide, polycarbonate, cellulose triacetate and cellulose acetate propionate.

And the control circuit layer is located on the substrate 200 and used for controlling the pixels 101 to emit light, and the control circuit layer comprises a control device 2011 and a control line electrically connected with the control device 2011. A semiconductor layer 2012, a first insulating layer 2013, a first metal layer 2014, a second insulating layer 2015, and a second metal layer 2016 are formed over the substrate 200; the semiconductor layer 2012 includes a source region, a channel region, and a drain region; the first metal layer 2014 includes a gate electrode disposed in alignment with the semiconductor layer 2012, and the second metal layer 2016 includes a source electrode and a drain electrode connected to the semiconductor layer 2012. Wherein the semiconductor layer 2012, the first insulating layer 2013, the gate electrode, the second insulating layer 2015, and the source and drain electrodes form the control device 2011.

And a third insulating layer 203 on a side of the second metal layer 2016 away from the substrate 200.

A light emitting device 202, wherein the light emitting device 202 comprises an anode 2021, a cathode 2022, and a light emitting layer 2023 between the anode 2021 and the cathode 2022; the light emitting device 202 forms the pixel 101.

A pixel defining layer 204 located on a side of the anode 2021 away from the substrate 200, wherein the pixel defining layer 204 includes a plurality of pixel defining areas, and the light emitting layer 2023 is located in the pixel defining areas.

The light emitting device 202 includes a first light emitting device 202A, a second light emitting device 202B, and a third light emitting device 202c, and the arrangement of the first light emitting device 202A, the second light emitting device 202B, and the third light emitting device 202c may be as shown in fig. 2A to fig. 2B, it can be understood that fig. 2A to fig. 2B are only exemplary illustrations and are not intended to limit the present application, and those skilled in the art may set the arrangement according to actual needs, and details of which are not repeated herein.

With reference to fig. 1K and fig. 2A to 2B, the wavelengths of the light emitted by the first light emitting device 202A, the second light emitting device 202B, and the third light emitting device 202c are different.

Further, the wavelength λ 1 of the light emitted from the first light emitting device 202a is greater than the wavelength λ 2 of the light emitted from the second light emitting device 202 b; the wavelength λ 2 of the light emitted from the second light emitting device 202b is greater than the wavelength λ 3 of the light emitted from the third light emitting device 202 c; namely: λ 1> λ 2> λ 3.

In the plurality of first recesses 1031 and/or first protrusions 1032, if the included angles between the first edges 1033a and the second edges 1033b of the first recesses 1033a and/or the first protrusions 1033b corresponding to the first light emitting devices 202a, the second light emitting devices 202b, and the third light emitting devices 202c are the same, when λ 1> λ 2> λ 3, light emitted from the first light emitting devices 202a enters the second medium layer 104 from the first medium layer 103 at an incident angle θ 11, and is refracted in the second medium layer 104, there is a first refraction angle θ 21; the light emitted by the second light emitting device 202b enters the second medium layer 104 from the first medium layer 103 at an incident angle theta 12, and is refracted in the second medium layer 104, and a second refraction angle theta 22 exists; the light emitted by the third light emitting device 202c enters the second medium layer 104 from the first medium layer 103 at an incident angle theta 13 and is refracted in the second medium layer 104, and a third refraction angle theta 23 exists; the first refraction angle theta 21 is smaller than the second refraction angle theta 22, and the second refraction angle theta 22 is smaller than the third refraction angle theta 23; namely: θ 21< θ 22< θ 23. Therefore, in order to make the light emitted by the first light emitting device 202a, the second light emitting device 202b, and the third light emitting device 202c pass through the light adjusting structure 102 and then be changed into the positive outgoing light 102a, the included angle between the first edge 1033a and the second edge 1033b corresponding to the first light emitting device 202a, the second light emitting device 202b, and the third light emitting device 202c of the first recess 1033a and/or the first protrusion 1033b may be different.

Specifically, an included angle θ 31 between the first side 1033a and the second side 1033b of the first groove 1033a and/or the first protrusion 1033b corresponding to the first light emitting device 202a is larger than an included angle θ 32 between the first side 1033a and the second side 1033b of the first groove 1033a and/or the first protrusion 1033b corresponding to the second light emitting device 202 b; an angle θ 32 between the first side 1033a and the second side 1033b of the first groove 1033a and/or the first protrusion 1033b corresponding to the second light emitting device 202b is larger than an angle θ 33 between the first side 1033a and the second side 1033b of the first groove 1033a and/or the first protrusion 1033b corresponding to the third light emitting device 202 c; namely: θ 31> θ 32> θ 33.

Similarly, when the second edge 1033b is arc-shaped, the curvatures of the first edge 1033a in the first recess 1031 and/or the first protrusion 1032 corresponding to the first light emitting device 202a, the second light emitting device 202b, and the third light emitting device 202c may be different, and are not described again here.

Further, the display panel further includes an inorganic layer 205 located on a side of the cathode 2022 away from the substrate 200, and the inorganic layer 205, the first dielectric layer 103, and the second dielectric layer 104 may form the encapsulation layer 105.

Further, the display panel further includes a third metal layer and the like, which are not shown, for forming an upper plate of the capacitor.

Further, the display panel further includes a touch electrode and the like, which are not shown.

Further, the display panel includes a color filter and the like, which are not shown.

Further, the display panel also includes a sensor or the like, which is not shown.

In the display panels shown in fig. 1A to 1L, the curved surface regions 100b are located at two opposite sides of the planar region 100a for illustration, and it can be understood that the curved surface regions 100b may also be located at the periphery of the planar region 100a, or only one curved surface region 100b is provided for the display panel, which is not described herein again.

Please continue to refer to fig. 3A, which is a flowchart illustrating a process for fabricating a display panel according to an embodiment of the present disclosure; fig. 3B to 3F are schematic views illustrating a process of manufacturing a display panel by using the manufacturing method shown in fig. 3A.

The application also provides a preparation method of the display panel, which comprises the following steps:

s10: providing a substrate 200, wherein the substrate 200 comprises a first region and a second region 200B adjacent to the first region, as shown in fig. 3B;

s20: preparing a first dielectric layer 103 on the surface of the substrate 200, and patterning a portion of the first dielectric layer 103 corresponding to the second region 200b, as shown in fig. 3C;

s30: and preparing a second dielectric layer 104 on the surface of the first dielectric layer 103, as shown in fig. 3D.

The first region corresponds to a planar region of the display panel, the second region 200b corresponds to a curved region 100b of the display panel, and the light adjusting structure 102 includes portions of the first dielectric layer 103 and the second dielectric layer 104 corresponding to the curved region 100 b.

Specifically, the refractive index n1 of the first medium layer 103 is smaller than the refractive index n2 of the second medium layer 104; the first medium layer 103 is patterned to form a plurality of first recesses 1031 and/or first protrusions 1032, and the second medium layer 104 forms second protrusions 1042 and second recesses 1041 in portions corresponding to the first recesses 1031 and/or the first protrusions 1032.

The light adjusting structure 102 comprises a plurality of first recesses 1031 and/or first protrusions 1032 which are positioned in the first medium layer 103, and a plurality of second protrusions 1042 and/or second recesses 1041 which are positioned in the second medium layer 104 and correspond to the first recesses 1031 and/or the first protrusions 1032.

The first medium layer 103 may be formed on the surface of the substrate 200 by inkjet printing, and the first recess 1031 or the first protrusion 1032 is formed by etching; the preparation material of the first dielectric layer 103 comprises acrylic or epoxy organic matter; the second dielectric layer 104 is made of inorganic materials such as silicon nitride and silicon oxynitride.

Before the step S20, the preparation method further includes:

s11: a control wiring layer, a light emitting device 202, a third insulating layer 203, a pixel defining layer 204, and an inorganic layer 205 are formed on the surface of the substrate 200, as shown in fig. 3B.

The control circuit layer is located on the substrate 200, and the control circuit layer includes a control device 2011 and a control line electrically connected to the control device 2011. A semiconductor layer 2012, a first insulating layer 2013, a first metal layer 2014, a second insulating layer 2015, and a second metal layer 2016 are formed over the substrate 200; the semiconductor layer 2012 includes a source region, a channel region, and a drain region; the first metal layer 2014 includes a gate electrode disposed in alignment with the semiconductor layer 2012, and the second metal layer 2016 includes a source electrode and a drain electrode connected to the semiconductor layer 2012. Wherein the semiconductor layer 2012, the first insulating layer 2013, the gate electrode, the second insulating layer 2015, and the source and drain electrodes form the control device 2011.

The third insulating layer 203 is located on the side of the second metal layer 2016 away from the substrate 200, and the third insulating layer 203 includes a via hole thereon to expose one of the source or the drain, the via hole being made by a yellow light process.

The light-emitting device 202 includes an anode 2021, a cathode 2022, and a light-emitting layer 2023 between the anode 2021 and the cathode 2022; the anode 2021 is electrically connected to one of the source and the drain through a via hole in the third insulating layer 203.

The pixel defining layer 204 is disposed on a side of the anode 2021 away from the substrate 200, the pixel defining layer 204 forms a plurality of pixel defining areas through a yellow light process, and the light emitting layer 2023 of the light emitting device 202 is formed in the pixel defining areas. The light emitting layer 2023 can be prepared by evaporation or the like.

The inorganic layer 205 is located on a side of the cathode 2022 away from the substrate 200.

The first dielectric layer 103 and the second dielectric layer 104 are located on one side of the inorganic layer 205 away from the substrate 200; further, the first dielectric layer 103 and the second dielectric layer 104 are located in the encapsulation layer 105, and the inorganic layer 205, the first dielectric layer 103, and the second dielectric layer 104 form the encapsulation layer 105.

Further, the display panel further includes a third dielectric layer 106, and the light adjusting structure 102 includes: a plurality of first recesses 1031 located in the first dielectric layer 103 and corresponding to the pixels 101, a cavity 1043 formed by the second dielectric layer 104 in a region corresponding to the plurality of first recesses 1031, and a third dielectric layer 106 located in the cavity 1043, as shown in fig. 3E to 3F.

The embodiment of the application provides a display panel and display device thereof, the display panel includes planar area 100a and connects in curved surface area 100b of planar area 100a, the display panel includes: a plurality of pixels 101 located within the curved region 100 b; and, be located light adjusting structure 102 in curved surface district 100b, the light 101a process that pixel 101 sent light adjusting structure 102 becomes positive emergent light 102a, the emergent direction of positive emergent light 102a with planar district 100a vertical direction's contained angle is less than and predetermines the angle, predetermine the angle and be equal to 60, in order to improve display panel and be in curved surface district 100b easily appears the problem of colour cast.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The display panel and the display device provided by the embodiment of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the embodiment is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A display panel comprising a planar area and a curved area connected to the planar area, the display panel comprising:

the light adjusting structure is positioned in the curved surface area, wherein light emitted by the pixels is changed into positive emergent light through the light adjusting structure, the included angle between the emergent direction of the positive emergent light and the vertical direction of the plane area is smaller than a preset angle, and the preset angle is equal to 60 degrees;

the display panel further includes:

the light adjusting structure comprises parts of the first dielectric layer and the second dielectric layer corresponding to the curved surface area;

the display panel further comprises a third medium layer; the light-modifying structure includes: the second dielectric layer is positioned in a cavity formed in a region corresponding to the first grooves, and the third dielectric layer is positioned in the cavity;

the second dielectric layer and the third dielectric layer are made of different materials.

2. The display panel according to claim 1, wherein the light adjusting structure comprises a plurality of first grooves and/or first protrusions corresponding to the pixels in the first dielectric layer, and a plurality of second protrusions and/or second grooves corresponding to the first grooves and/or first protrusions in the second dielectric layer.

3. The display panel according to claim 1, wherein a refractive index of the third dielectric layer is equal to a refractive index of the second dielectric layer.

4. The display panel according to claim 2, wherein a cross section of the first groove and the second groove comprises at least one of a triangle and a sector.

5. The display panel of claim 2, wherein the first groove is a triangular groove having at least one oblique side that slopes from the curved region to the planar region of the display panel.

6. The display panel according to claim 1, wherein a difference between a refractive index of the first dielectric layer and a refractive index of the second dielectric layer is greater than or equal to 0.1 and less than or equal to 0.8.

7. The display panel of claim 1, wherein the display panel further comprises an encapsulation layer, and wherein the first dielectric layer and the second dielectric layer are located within the encapsulation layer.

8. A display device comprising the display panel according to any one of claims 1 to 7.