CN113178529A

CN113178529A - Display panel

Info

Publication number: CN113178529A
Application number: CN202110373848.9A
Authority: CN
Inventors: 汪衎
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-07-27
Anticipated expiration: 2041-04-07
Also published as: CN113178529B

Abstract

The invention provides a display panel, wherein a black matrix of the display panel is positioned in a gap between adjacent color filtering color resistance blocks, a packaging layer, an opening of a first refraction layer, a second refraction layer and the color filtering color resistance blocks are positioned on a light-emitting path of a light-emitting device, a concave area is formed on one side of the second refraction layer, which is back to the light-emitting device, and a convex part is formed on the color filtering color resistance block, which corresponds to the concave area; the refraction angle of light emitted from the first refraction layer to the second refraction layer is reduced, the refraction angle of light emitted from the second refraction layer to the color light filtering color blocking block is increased, the light emitting angle of the display panel is increased, in addition, the normal direction of the protruding part on the surface of the color light filtering color blocking block is close to the central line of the light emitting device, the light emitted to the edge of the color light filtering color blocking block can also deviate to the central line of the light emitting device, the condition that the emergent light at the edge is absorbed by a black matrix is avoided, and the light emitting brightness and the visual angle under the side visual angle of the edge of the display panel are improved while the brightness of the forward visual angle is kept.

Description

Display panel

Technical Field

The invention relates to the technical field of display, in particular to a display panel.

Background

An Organic Light Emitting Diode (OLED) display panel has the characteristics of self-luminescence, high contrast, wide viewing angle, high response speed and the like. The working principle is that an ITO transparent electrode and a metal electrode are respectively used as an anode and a cathode of a device, under the drive of certain voltage, electrons and holes are respectively injected into an electron and hole transmission layer from the cathode and the anode, the electrons and the holes respectively migrate to a light-emitting layer through the electron and hole transmission layer and meet in the light-emitting layer to form excitons, so that the molecules of the light-emitting layer are excited, and visible light is radiated.

After light emitted by a light emitting layer of a conventional OLED display panel is output through an encapsulation layer, a polarizing layer and the like, the output light has specific directivity, and the utilization rate of emergent light from a screen is low and the color chroma is poor. Some panel manufacturers adopt a method of superposing a color film layer and a black matrix to replace the traditional polarizer material, and some manufacturers also adopt modes of a microprism matrix and the like to collimate the light-emitting path of the light-emitting device, so that the maximum light-emitting efficiency is obtained. The utilization ratio of light can be improved by adopting the color film layer, the black matrix and the micro-prism matrix from a certain aspect, the brightness and the color of a forward visual angle are obviously improved, but the brightness under the non-forward visual angle can be greatly lost inevitably, the brightness visual angle of a product is greatly reduced, when the display panel is watched from other angles, the original color cannot be seen, only a blurred image can be seen, even the full black or the full white can be seen, and the user experience of the product is influenced.

To sum up, need provide a new display panel, in order to solve prior art's display panel and adopt the various rete, black matrix and microprism matrix method to replace traditional polaroid material, the light that causes the outgoing at pixel edge is absorbed by black matrix easily, black matrix and microprism matrix cause luminance and visual angle under the non-forward visual angle to be less, need improve the structure of colored filtering color resistance layer and black matrix layer, restrain the absorption of black matrix material to OLED device wide-angle light-emitting, under the condition of the luminance of guaranteeing the angle of front view, the luminance under the non-forward visual angle of loss that can be very big that avoids, the technical problem of product luminance and visual angle has been reduced to a great extent.

Disclosure of Invention

The invention provides an OLED display panel, which can solve the technical problems that in the prior art, a traditional polarizer material is replaced by a color film layer, a black matrix and a micro-prism matrix method, emergent light at the edge of a pixel is easily absorbed by the black matrix, and the black matrix and the micro-prism matrix cause that the brightness and the visual angle under a non-forward visual angle are small, and the brightness under the non-forward visual angle is greatly lost.

The technical scheme provided by the invention is as follows:

the embodiment of the invention provides a display panel, which at least comprises a light-emitting device, an encapsulation layer positioned on the light-emitting device, a first refraction layer positioned on the encapsulation layer, a second refraction layer positioned on the first refraction layer, and a color light-filtering color block and a black matrix positioned on the second refraction layer;

the black matrix is positioned in a gap between adjacent color filtering light blocking blocks, and the packaging layer, the opening of the first refraction layer, the second refraction layer and the color filtering light blocking blocks are positioned on a light emitting path of the light emitting device; and a concave area is formed on one side of the second refraction layer, which is back to the light-emitting device, and a convex part is formed on the color filter color block corresponding to the concave area.

According to a preferred embodiment of the present invention, the refractive index of the first refractive layer is smaller than the refractive index of the second refractive layer, the refractive index of the color filter blocker is smaller than the refractive index of the second refractive layer, and the refractive index of the encapsulation layer is equal to the refractive index of the second refractive layer.

According to a preferred embodiment of the present invention, the first refractive layer is formed on the surface of the package layer, and an opening of the first refractive layer is formed corresponding to the light emitting device, and an edge of the opening of the first refractive layer has a reflective surface facing the color filter blocker; and the light rays emitted to the reflecting surface from the second refraction layer are reflected towards the direction of the color filtering color blocking block.

According to a preferred embodiment of the present invention, a protruding block is formed on the second refraction layer corresponding to the opening of the first refraction layer, and the protruding block is attached to the surface of the package layer; wherein the protrusion block covers the light emitting device, and the protrusion portion covers the protrusion block.

According to a preferred embodiment of the present invention, the protrusion is of an arc structure or an oval structure, and a horizontal included angle near a center line of the protrusion is smaller than a horizontal included angle far from the center line.

According to a preferred embodiment of the present invention, the refractive index of the first refractive layer is 1.4-1.6, and the thickness of the first refractive layer is 1um-5 um; the refracting index of second refraction layer is 1.7-2.5, the thickness of second refraction layer is 1um-50 um.

According to a preferred embodiment of the present invention, the material of the first refraction layer is at least one of acrylic-based resin, epoxy resin, phenolic resin, polyamide-based resin, polyimide-based resin, and unsaturated polyester resin; the material of the second refraction layer is polytetrafluoroethylene or polystyrene, wherein the second refraction layer is also doped with carbon black particles, and the carbon black particles are spherical nano-particles prepared from acrylic materials.

According to a preferred embodiment of the present invention, the reflective surface is inclined or curved away from a center line of the opening of the first refractive layer, wherein the reflective surface is a smooth slope or a smooth arc surface portion.

According to a preferred embodiment of the present invention, the light emitting device is an OLED device, an LED device or a Micro-LED device.

According to a preferred embodiment of the present invention, the R, G, B color blocking blocks of the color filter block are respectively aligned with the R, G, B sub-pixels of the light emitting device.

The invention has the beneficial effects that: the embodiment of the invention provides a display panel, wherein a black matrix of the display panel is positioned in a gap between adjacent color filtering color resistance blocks, a packaging layer, an opening of a first refraction layer, a second refraction layer and the color filtering color resistance blocks are positioned on a light-emitting path of a light-emitting device, a concave area is formed on one side, back to the light-emitting device, of the second refraction layer, and a convex part is formed on the color filtering color resistance block corresponding to the concave area; the refraction angle of light emitted from the first refraction layer to the second refraction layer is reduced, the refraction angle of light emitted from the second refraction layer to the color light filtering color resistance block is increased, the light emitting angle of the display panel is increased, in addition, the normal direction of the protruding part on the surface of the color light filtering color resistance block is close to the central line of the light emitting device, the light emitted to the edge of the color light filtering color resistance block can also deviate to the central line of the light emitting device, the condition that the emergent light at the edge is absorbed by the black matrix is avoided, and the light emitting brightness and the visual angle under the side visual angle of the edge of the display panel are improved while the brightness of the forward visual angle is kept.

Drawings

In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

Fig. 2 is another schematic structural diagram of a display panel provided in the present invention.

Fig. 3 is a schematic structural diagram of an OLED display panel according to the present invention.

Fig. 4 is a schematic diagram of a refraction path of the outgoing light ray S9 in fig. 3.

Detailed Description

The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals, and broken lines in the drawings indicate that the elements do not exist in the structures, and only the shapes and positions of the structures are explained.

The invention aims at the technical problems that the prior art adopts a color film layer, a black matrix and a micro-prism matrix method to replace the traditional polarizer material, so that the emergent light at the edge of a pixel is easily absorbed by the black matrix, the black matrix and the micro-prism matrix cause that the brightness and the visual angle under a non-forward visual angle are smaller, and the brightness under the non-forward visual angle is greatly lost.

As shown in fig. 1, an embodiment of the invention provides a structural schematic diagram of a display panel. The display panel 100 includes at least a light emitting device 101, an encapsulation layer 102 on the light emitting device 101, a first refraction layer 1031 on the encapsulation layer 102, a second refraction layer 1032 on the first refraction layer 1031, and a color filter color-resist block 1033 and a black matrix 1034 on the second refraction layer 1032, the first refraction layer 1031, the second refraction layer 1032, the color filter color-resist block 1033 and the black matrix 1034 constituting a polarizing layer 103, and the light emitting device 101 is preferably an OLED device, an LED device or a Micro-LED device. The color filter color resist 1033 of the present embodiment is planar on the side facing the light emitting device 101, and the color filter color resist 1033 can improve the color gamut of the display panel 100 and reduce the power consumption of the display panel 100.

The refractive index of the first refraction layer 1031 is 1.4-1.6, the thickness is 1um-5um, the refractive index of the second refraction layer 1032 is 1.7-2.5, and the thickness is 1um-50 um. The material of the first refractive layer 1031 is preferably at least one of acrylic-based resin, epoxy resin, phenol resin, polyamide-based resin, polyimide-based resin, and unsaturated polyester resin; the material of the second refraction layer 2032 is preferably polytetrafluoroethylene or polystyrene, and the second refraction layer 1032 is further doped with carbon black particles, which are spherical nanoparticles made of acrylic material.

The first refraction layer 1031 is formed on the surface of the package layer 102, and an opening of the first refraction layer 1031 is formed corresponding to the light emitting device 101, and an edge of the opening of the first refraction layer 1031 has a reflection surface 10311 facing the color filter blocking block; the light emitted from the second refraction layer 1032 to the reflection surface 10311 is reflected toward the color filter 1033.

The refractive index of the first refractive layer 1031 is preferably smaller than that of the second refractive layer 1032, the refractive index of the color filter block 1033 is preferably smaller than that of the second refractive layer 1032, and the refractive index of the second refractive layer 1032 is preferably equal to that of the encapsulation layer 102. The refraction angle of the light emitted from the first refraction layer 1031 to the second refraction layer 1032 becomes smaller, the light beam approaches the center line of the light emitting device 101, the refraction angle of the light emitted from the second refraction layer 1032 to the color filter color blocking block 1033 becomes larger, and the light emitting angle of the display panel 200 is increased, specifically, the emitted light is not shown in fig. 1, and the light beams S1 and S3 emitted from the light emitting device 101 in fig. 1 perpendicularly exit the color filter color blocking block 1033. Since the black matrix 1034 is located at two sides of the color filter and color resistance block 1033, the light rays S2 and S4 emitted from the light emitting device 101 are reflected at the boundary between the first refraction layer 1031 and the second refraction layer 1032, and then emitted to the black matrix 1034, and then absorbed by the black matrix 1034, so as to reduce the utilization rate and the viewing angle of the emergent light at the edge of the light emitting device 101, which cannot completely solve all the technical problems of the present invention.

In order to completely solve the above technical problem, the present invention further improves the structure in the above embodiment, and as shown in fig. 2, the embodiment of the present invention provides another structural schematic diagram of a display panel. The display panel 200 includes at least a light emitting device 201, an encapsulation layer 202 on the light emitting device 201, a first refraction layer 2031 and a second refraction layer 2032 on the encapsulation layer 202, and a color filter color resist block 2033 and a black matrix 2034 on the second refraction layer 2032, the first refraction layer 2031, the second refraction layer 2032, the color filter color resist block 2033 and the black matrix 2034 constitute a polarizing layer 203, and the light emitting device 201 is preferably an OLED device, an LED device or a Micro-LED device. The black matrix 2034 is located in the gap between adjacent color filter blocks 2033, so as to prevent the emergent light of different colors from mixing. The color filter color-blocking block 2033 may enhance the color gamut representation of the display panel 200 and reduce the power consumption of the display panel 200.

In this embodiment, the refractive index of the first refractive layer 2031 is smaller than the refractive index of the second refractive layer 2032, the refractive index of the color filter block 2033 is smaller than the refractive index of the second refractive layer 2032, the refractive index of the package layer 202 is equal to the refractive index of the second refractive layer 2032, and light can be transmitted from the package layer 202 and the second refractive layer 2032 in a straight line without refraction. The refractive index of the first refractive layer 2031 is preferably 1.4 to 1.6, and the thickness of the first refractive layer 2031 is preferably 1um to 5 um; the refractive index of the second refractive layer 2032 is preferably 1.7 to 2.5, and the thickness of the second refractive layer 2032 is preferably 1um to 50 um. The material of the first refraction layer is at least one of acrylic-based resin, epoxy resin, phenolic resin, polyamide-based resin, polyimide-based resin and unsaturated polyester resin; the second refraction layer is made of polytetrafluoroethylene or polystyrene, wherein the second refraction layer is also doped with carbon black particles, and the carbon black particles are spherical nano particles prepared from acrylic materials. The packaging layer 202 is an independent inorganic layer or a superposed film of the inorganic layer and an organic layer, the inorganic layer is preferably one or more combined materials of Al2O3, TiO2, SiNx, SiCNx and SiOx, the organic layer is prepared by adopting an ink-jet printing technology, and the organic layer is preferably one or more combined materials of acrylic, hexamethyldisiloxane, polyacrylates, polycarbonate and polystyrene.

The first refractive layer 2031 is formed on the surface of the package layer 202, and an opening of the first refractive layer 2031 is formed corresponding to the light emitting device 201, and the opening of the first refractive layer 2031 is an annular groove. The opening edge of the first refractive layer 2031 has a reflective surface 20311 facing the color filter blocking block 2033; wherein the reflective surface 20311 is inclined or curved away from the center line of the opening of the first refractive layer 2031, wherein the reflective surface 20311 is preferably a smooth slope or a smooth arc surface. The light emitted from the second refractive layer 2032 to the reflective surface 20311 is reflected toward the color filter color block 2033. A protrusion 20321 is formed on the second refraction layer 2032 corresponding to the opening of the first refraction layer 2031, and the protrusion 20321 is attached to the surface of the package layer 202; the protrusion 20321 covers the light emitting device 201, and the protrusion 20331 covers the protrusion 20321, so that the utilization efficiency of the light emitted from the light emitting device 201 can be improved to the greatest extent.

The packaging layer 202, the opening of the first refraction layer 2031, the second refraction layer 2032 and the color filter color resistance block 2033 are located on the light emitting path of the light emitting device 201; a concave region is formed on the side of the second refraction layer 2032 facing away from the light emitting device 201, and a convex portion 20331 is formed on the color filter color block 2033 corresponding to the concave region. The protrusion 20331 is preferably of a circular arc configuration or an oval configuration, and the horizontal angle near the centerline of the protrusion 20331 is smaller than the horizontal angle far from the centerline. The refraction angle of the light emitted from the first refraction layer 2031 to the second refraction layer 2032 decreases, the light is closer to the center line of the light emitting device 201, the refraction angle of the light emitted from the second refraction layer 2032 to the color filter resistance block 2033 increases, and the light emitting angle of the display panel 200 increases, and the specific refraction path of the light is specifically described in fig. 2. The light rays S5 and S6 emitted from the light emitting device 201 in fig. 2 are emitted toward the color filter color block 2033. The protrusion 20331 in another embodiment has a wave-like or saw-tooth structure.

As can be seen from a comparison between fig. 1 and fig. 2, after the color filter color resistance block 2033 is formed with the protrusion 20331, the incident light rays S7 and S8 directed to the black matrix 2034 are not absorbed by the black matrix 2034, exit along the edge of the color filter color resist 2033, that is, the normal direction of the arc on the surface of the color filter color-resisting block 2033 is close to the center line of the light emitting device 201, and the light emitted to the edge of the color filter color-resisting block 2033 will also shift to the center line of the light emitting device 201, so as to avoid the condition that the emergent light from the edge of the OLED device 201 is absorbed by the black matrix 2034, thereby obtaining the maximum light emitting efficiency, the technology can greatly reduce the absorption of the black matrix 2034 to the light emitted from the light emitting device 201 at a large viewing angle while keeping the brightness at a forward viewing angle, inhibit the skylight effect, improve the light emitting brightness at other viewing angles (side viewing), improve the brightness viewing angle of the whole product, and completely solve the technical problem of the invention.

Fig. 3 illustrates an example of an OLED panel, in which R, G, B color filter blocks of the color filter block are respectively aligned with R, G, B sub-pixels of the light emitting device. As shown in fig. 3, the display panel 300 is preferably a top-emitting OLED display panel, and the display panel 300 includes a substrate 301, an array substrate 302 on a surface of the substrate 301, a light emitting device layer on a surface of the array substrate 302, an encapsulation layer 308 on a surface of the light emitting device layer, and a polarizing layer 400 on a surface of the encapsulation layer 308; the polarizing layer 400 includes a first refractive layer 401, a second refractive layer 402 on the first refractive layer 401, and a color filter color blocking block 403 and a black matrix 404 on the second refractive layer 402. The structure of the polarizing layer 400 is similar to the structure of the polarizing layer 203 in fig. 2.

The substrate 301 includes a first flexible layer, a first water-blocking layer, a second flexible layer, and a second water-blocking layer, which are stacked, the materials of the first flexible layer and the second flexible layer are yellow polyimide and transparent polyimide, respectively, and the materials of the first water-blocking layer and the second water-blocking layer are preferably silicon dioxide or silicon nitride. The array substrate 302 is a thin film transistor array substrate, and includes a buffer layer on a substrate, a plurality of driving thin film transistors disposed on the buffer layer, and a planarization layer disposed on the plurality of driving thin film transistors; the light emitting device layer comprises an anode positioned on the surface of the planarization layer, a light emitting layer positioned on the surface of the anode, and a cathode positioned on the surface of the light emitting layer, wherein the light emitting layer of each sub-pixel shares one cathode, the anode is electrically connected with a drain electrode in the thin film transistor through a through hole on the planarization layer, the flexible printed circuit board is attached with a corresponding driving chip, the cathode of the external power supply passes through a binding area, a corresponding electrical signal is transmitted to a power wiring layer, finally, the power wiring layer transmits the corresponding electrical signal to the cathode layer 307 in the display area, the light emitting device layer is defined with a pixel opening area and a non-opening area, and the pixel opening area is an inverted trapezoid, an inverted triangle or a fan-shaped pattern.

The light emitting device layer of the present embodiment includes a pixel defining layer 3031, a pixel defining layer 3032, a pixel defining layer 3033 and a pixel defining layer 3034, a red (R) sub-pixel is formed between the pixel defining layer 3031 and the pixel defining layer 3032, the R sub-pixel includes an anode 3041, a light emitting layer 3042 positioned on the anode 3041 and a part of a cathode layer 307 positioned on the light emitting layer 3042, a green (G) sub-pixel is formed between the pixel defining layer 3032 and the pixel defining layer 3033, the G sub-pixel includes an anode 3051, a light emitting layer 3052 positioned on the anode 3051 and a part of the cathode layer 307 positioned on the light emitting layer 3052, a blue (B) sub-pixel is formed between the pixel defining layer 3033 and the pixel defining layer 3034, and the B sub-pixel includes an anode 3061, a light emitting layer 3062 positioned on the anode 3061 and a part of the cathode layer 307 positioned on the light emitting layer 3062.

The R, G, B color filters of the color filter block 403 are respectively aligned with the R, G, B sub-pixels of the light emitting device layer. A convex block 4021 of the second refractive layer 402 and an R color block 4031 located on the convex block 4021 are arranged right above the R sub-pixel, a convex block 4022 of the second refractive layer 402 and a G color block 4032 located on the convex block 4022 are arranged right above the G sub-pixel, and a convex block 4023 of the second refractive layer 402 and a B color block 4033 located on the convex block 4023 are arranged right above the B sub-pixel. The R color resistance block 4031 is provided with

black matrices

4041 and 4042 on both sides, the G color resistance block 4032 is provided with

black matrices

4042 and 4043 on both sides, and the B color resistance block 4033 is provided with

black matrices

4043 and 4044 on both sides.

The light emitting device layer is defined with a pixel opening and a non-opening area, the color filter color resistance block 403 is arranged corresponding to the pixel opening, and a convex part is arranged on one side facing the light emitting device layer; the first refractive layer 401 is disposed corresponding to the non-open region. After the light emitting device layer emits the light S10, the emitted light S10 directly emits to the second refraction layer 402 without contacting the first refraction layer 201, and then emits from the second refraction layer 402 to the interface of the color filter color blocking block 403, where the refraction angle is larger than the corresponding incident angle, and the brightness and viewing angle of the light emitted under non-normal viewing angles can also be improved. After the light emitting device layer emits the light ray S9, the emitted light ray S1 is reflected by the reflective surface of the first refractive layer 401, the incident angle is θ 1, the reflection angle is θ 2, after reflection, the light ray is emitted again by the second refractive layer 402 to the interface of the color filter color blocking block 403, the incident angle is θ 3, the refraction angle is θ 4, the refraction angle θ 4 is greater than the incident angle θ 3, the light ray after refraction is not in contact with the black matrix 4041, and the emitted light ray S9 is prevented from being absorbed by the black matrix 4041, so that the brightness and the viewing angle of light emitted under the non-normal viewing angle are improved, specifically referring to fig. 4.

The embodiment of the invention provides a display panel, wherein a black matrix of the display panel is positioned in a gap between adjacent color filtering color resistance blocks, a packaging layer, an opening of a first refraction layer, a second refraction layer and the color filtering color resistance blocks are positioned on a light-emitting path of a light-emitting device, a concave area is formed on one side, back to the light-emitting device, of the second refraction layer, and a convex part is formed on the color filtering color resistance block corresponding to the concave area; the refraction angle of light emitted to the second refraction layer from the first refraction layer is reduced, the refraction angle of light emitted to the color filtering color blocking block from the second refraction layer is increased, the light emitting angle of the display panel is increased, in addition, the normal direction of the protruding part on the surface of the color filtering color blocking block is close to the central line of the light emitting device, the light emitted to the edge of the color filtering color blocking block can also deviate to the central line of the light emitting device, the condition that the emergent light irradiates the black matrix is avoided, and the light emitting brightness and the visual angle under the side viewing angle of the pixel edge are improved while the brightness of the forward visual angle is kept.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A display panel is characterized by at least comprising a light-emitting device, an encapsulation layer positioned on the light-emitting device, a first refraction layer positioned on the encapsulation layer, a second refraction layer positioned on the first refraction layer, and a color light-filtering color block and a black matrix positioned on the second refraction layer;

2. The display panel of claim 1, wherein the refractive index of the first refractive layer is smaller than the refractive index of the second refractive layer, the refractive index of the color filter blocker is smaller than the refractive index of the second refractive layer, and the refractive index of the encapsulation layer is equal to the refractive index of the second refractive layer.

3. The display panel according to claim 2, wherein the first refractive layer is formed on the surface of the encapsulation layer, and an opening of the first refractive layer is formed corresponding to the light emitting device, and an edge of the opening of the first refractive layer has a reflective surface facing the color filter color block; and the light rays emitted to the reflecting surface from the second refraction layer are reflected towards the direction of the color filtering color blocking block.

4. The display panel according to claim 3, wherein the second refraction layer is formed with a protrusion corresponding to the opening of the first refraction layer, and the protrusion is attached to the surface of the encapsulation layer; wherein the protrusion block covers the light emitting device, and the protrusion portion covers the protrusion block.

5. The display panel according to claim 4, wherein the protrusion is of an arc structure or an oval structure, and a horizontal included angle near a center line of the protrusion is smaller than a horizontal included angle far away from the center line.

6. The display panel according to claim 2, wherein the refractive index of the first refractive layer is 1.4-1.6, and the thickness of the first refractive layer is 1um-5 um; the refracting index of second refraction layer is 1.7-2.5, the thickness of second refraction layer is 1um-50 um.

7. The display panel according to claim 6, wherein the material of the first refractive layer is at least one of an acrylic-based resin, an epoxy resin, a phenol resin, a polyamide-based resin, a polyimide-based resin, and an unsaturated polyester resin; the material of the second refraction layer is polytetrafluoroethylene or polystyrene, wherein the second refraction layer is also doped with carbon black particles, and the carbon black particles are spherical nano-particles prepared from acrylic materials.

8. The display panel according to claim 3, wherein the reflective surface is inclined or curved away from a center line of the opening of the first refractive layer, wherein the reflective surface is a smooth slope or a smooth arc surface portion.

9. The display panel of claim 1, wherein the light emitting device is an OLED device, an LED device, or a Micro-LED device.

10. The display panel of claim 9, wherein the R, G, B color filters of the color filter block are respectively aligned with the R, G, B sub-pixels of the light emitting device.