Display panel and display apparatus

Abstract

Disclosed in the present application are a display panel and a display apparatus. When the display panel is in a display state, a first light-emitting part emits light of a first colour, and a second light-emitting part emits light of a second colour; a light emission functional layer comprises a first colour conversion part arranged corresponding to the first light-emitting part, and a translucent part arranged corresponding to the second light-emitting part; the first colour conversion part is used to convert the light of the first colour into light of a third colour, and the light of the second colour is different from the light of the third colour.

Description

Display panel and display device

[0001] The present application claims priority to the Chinese patent application No. 202410962171.6, filed on July 17, 2024, with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0003] With the development of display technology, users have higher and higher requirements for display panels, especially in terms of the service life, resolution and brightness of display panels.

[0004] At present, micro semiconductor light-emitting diode (uLED) display panels perform excellently in terms of brightness and service life. Currently, monochromatic micro semiconductor light-emitting diodes can be used to manufacture high-resolution displays, but there are still great technical difficulties in manufacturing color high-resolution display panels. For example, the most mainstream method at present is to transfer RGB monochromatic micro LEDs to a driving substrate respectively by a mass transfer method to assemble and manufacture a full-color display. However, a large number of micro LEDs are not stable, efficient and reliable in the transfer process, which is difficult to meet the needs of color and higher-resolution semiconductor light-emitting diode display panels. SUMMARY

[0005] The embodiments of the present application provide a display panel and a display device, which can reduce the process difficulty of color high-resolution display panels and realize higher-resolution display panels.

[0006] The embodiments of the present application provide a display panel, which comprises:

[0007] a light-emitting layer comprising first light-emitting parts and second light-emitting parts arranged at intervals, the first light-emitting parts emitting first color light when the display panel is in a display state, and the second light-emitting parts emitting second color light when the display panel is in the display state; and

[0008] an out-light function layer arranged on one side of the light-emitting layer, the out-light function layer comprising:

[0009] first color conversion parts arranged corresponding to the first light-emitting parts along a first direction, and

[0010] a light-transmitting part arranged corresponding to the second light-emitting parts along the first direction;

[0011] The first direction is a thickness direction of the display panel, the first color conversion part is configured to convert the first color light into a third color light, the third color light is different from the first color light in color, and the first color light and the second color light are lights of the same color.

[0012] According to the above purpose of the present application, the display device provided by the embodiments of the present application comprises a display panel, and the display panel comprises:

[0013] comprises:

[0014] a light emitting layer comprising a first light emitting part and a second light emitting part arranged at intervals, the first light emitting part emitting a first color light when the display panel is in a display state, and the second light emitting part emitting a second color light when the display panel is in the display state; and

[0015] a light emitting function layer arranged on one side of the light emitting layer, the light emitting function layer comprising:

[0016] a first color conversion part arranged corresponding to the first light emitting part along a first direction, and

[0017] a light transmitting part arranged corresponding to the second light emitting part along the first direction.

[0018] The first direction is a thickness direction of the display panel, the first color conversion part is configured to convert the first color light into a third color light, the third color light is different from the first color light in color. BRIEF DESCRIPTION OF DRAWINGS

[0019] The technical solutions and other beneficial effects of the present application will become apparent through the following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings.

[0020] FIG. 1 is a structural schematic diagram of a display panel provided by the embodiments of the present application;

[0021] FIG. 2 is another structural schematic diagram of a display panel provided by the embodiments of the present application;

[0022] FIG. 3 is another structural schematic diagram of a display panel provided by the embodiments of the present application;

[0023] FIG. 4 is another structural schematic diagram of a display panel provided by the embodiments of the present application;

[0024] FIG. 5 is another structural schematic diagram of a display panel provided by the embodiments of the present application;

[0025] FIG. 6 is another structural schematic diagram of a display panel provided by the embodiments of the present application;

[0026] FIG. 7 and FIG. 8 are structural schematic diagrams of a manufacturing process of a display panel according to an embodiment of the present application;

[0027] FIG. 9 to FIG. 11 are structural schematic diagrams of another manufacturing process of a display panel according to an embodiment of the present application. Embodiments of the present application

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of protection of the present application.

[0029] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity and clarity, the description in the following text describes the components and settings of specific examples. Of course, they are only examples, and the purpose is not to limit the present application. In addition, reference numbers and / or reference letters can be repeated in different examples in the present application, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but a person skilled in the art can realize the application of other processes and / or the use of other materials.

[0030] The present application provides a display panel, please refer to FIG. 1, the display panel comprises a light emitting layer 10 and a light emitting functional layer 20; the light emitting layer 10 comprises a first light emitting part 11 and a second light emitting part 12 arranged at intervals, the first light emitting part 11 emits first color light when the display panel is in a display state, and the second light emitting part 12 emits second color light when the display panel is in the display state.

[0031] The light emitting functional layer 20 is arranged on one side of the light emitting layer 10, the light emitting functional layer 20 comprises a first color conversion part 21 arranged corresponding to the first light emitting part 11 along a first direction X1, and a light transmission part 22 arranged corresponding to the second light emitting part 12 along the first direction X1, and the first direction X1 is the thickness direction of the display panel.

[0032] Among them, the first color conversion part 21 is used to convert the first color light into third color light, and the second color light and the third color light are different in color.

[0033] In the implementation process, the embodiments of this application form a first color conversion part 21 on one side of the first light-emitting part 11, thereby converting the first color light emitted by the first light-emitting part 11 into a third color light, while the second light-emitting part 12 can emit a second color light, so that the display panel can emit second color light and third color light of different colors, thereby realizing the color display of the display panel without the need for mass transfer, reducing the process difficulty of high-resolution display panels, and effectively realizing higher resolution display panels.

[0034] In one embodiment of this application, the light-emitting functional layer has a plurality of grooves, and at least one of the grooves has a light-reflecting surface on its sidewall.

[0035] The plurality of grooves include a first groove disposed along the first direction corresponding to the first light-emitting part, and a second groove disposed along the first direction corresponding to the second light-emitting part, the first color conversion part being disposed in the first groove, and the light-transmitting part being disposed in the second groove.

[0036] In one embodiment of this application, the light-transmitting portion includes a transparent filling material disposed in the second groove, and the light-reflecting surface is disposed on the sidewall of the second groove facing the transparent filling material.

[0037] In one embodiment of this application, the light-emitting functional layer further includes a dielectric layer and a reflective layer. The dielectric layer has a plurality of grooves formed therein, and the reflective layer is disposed on the sidewalls of the plurality of grooves. The side of the reflective layer facing the groove is the light-reflecting surface.

[0038] In one embodiment of this application, the depth of the groove is less than or equal to the thickness of the dielectric layer.

[0039] In one embodiment of this application, the light-emitting functional layer further includes a metal layer, in which a plurality of grooves are formed, and the sidewall of the metal layer facing the grooves is the light-reflecting surface.

[0040] In one embodiment of this application, the depth of the groove is equal to the thickness of the metal layer.

[0041] In one embodiment of this application, the light-emitting layer further includes a third light-emitting part that is spaced apart from both the first light-emitting part and the second light-emitting part, and the third light-emitting part emits a fourth color light when the display panel is in a display state;

[0042] The plurality of grooves includes a third groove disposed along the first direction corresponding to the third light-emitting portion;

[0043] The light-emitting functional layer includes a second color conversion unit disposed in the third groove. The second color conversion unit is used to convert the fourth color light into a fifth color light, wherein the second color light, the third color light, and the fifth color light are different colors of each other.

[0044] In one embodiment of this application, the materials of the first color conversion section and the second conversion section are both selected from quantum dot materials or phosphor materials.

[0045] In one embodiment of this application, the first color light, the second color light, and the fourth color light are all light of the same color.

[0046] In one embodiment of this application, the first color light, the second color light, and the fourth color light are all blue light, the third color light is one of red light and green light, and the fifth color light is the other of red light and green light.

[0047] In one embodiment of this application, the display panel further includes a protective layer covering the side of the light-emitting functional layer away from the light-emitting layer; and / or

[0048] The protective layer covers the light-reflecting surface.

[0049] In one embodiment of this application, the display panel further includes a Bragg reflector layer disposed on the side of the light-emitting functional layer away from the light-emitting layer. The Bragg reflector layer at least covers the first color conversion portion. A through hole is formed in the Bragg reflector layer corresponding to the light-transmitting portion along the first direction. The Bragg reflector layer reflects the first color light and the second color light, and transmits at least the third color light.

[0050] In one embodiment of this application, the Bragg reflector layer includes a plurality of first sub-layers and a plurality of second sub-layers stacked and alternately arranged along the first direction;

[0051] The first sublayer is made of silicon oxide, and the second sublayer is made of titanium oxide.

[0052] Specifically, referring to Figure 1, the display panel includes a driving substrate 30, a light-emitting layer 10 disposed on the driving substrate 30, and a light-emitting functional layer 20 disposed on the side of the light-emitting layer 10 away from the driving substrate 30.

[0053] In some embodiments, the driving substrate 30 includes a substrate and a driving circuit disposed on the substrate, and the substrate is made of silicon.

[0054] In some embodiments, the light-emitting layer 10 further includes a third light-emitting part 13 that is spaced apart from the first light-emitting part 11 and the second light-emitting part 12, and a spacer layer 14, wherein the spacer layer 14 fills the spaced spaces between the first light-emitting part 11, the second light-emitting part 12 and the third light-emitting part 13, so as to provide spacing, support and protection for the first light-emitting part 11, the second light-emitting part 12 and the third light-emitting part 13.

[0055] In some embodiments, the material of the spacer layer 14 may include at least one of silicon nitride and silicon oxide.

[0056] In some embodiments, the light-emitting functional layer 20 includes a second color conversion unit 23 disposed along the first direction X1 corresponding to the third light-emitting part 13; wherein, when the display panel is in the display state, the third light-emitting part 13 emits a fourth color light, and the second color conversion unit 23 is used to convert the fourth color light into a fifth color light; it is understood that the second light-emitting part 12 and the light-transmitting part 22 in the light-emitting functional layer 20 are disposed along the first direction X1, so that the second color light emitted by the second light-emitting part 12 can pass through the light-emitting functional layer 20; and the second color light, the third color light and the fifth color light are light of different colors, so that the display panel can emit the second color light, the third color light and the fifth color light to realize the color display of the display panel.

[0057] In some embodiments, the first color light, the second color light, and the fourth color light are all light of the same color; more preferably, the first color light, the second color light, and the fourth color light are all blue light, the third color light is one of red light and green light, and the fifth color light is the other of red light and green light. Thus, the display panel provided in this application embodiment can realize full-color display without the need for mass transfer, reducing the process difficulty of high-resolution display panels and effectively realizing higher resolution display panels.

[0058] In other embodiments of this application, the first color light, the second color light, and the fourth color light may also be light of different colors, which is not limited here. In this embodiment, the first color light, the second color light, and the fourth color light are all light of the same color as an example for illustration.

[0059] In some embodiments, the first light-emitting part 11, the second light-emitting part 12, and the third light-emitting part 13 all include semiconductor light-emitting diodes.

[0060] For example, the first light-emitting part 11 may include a first doped sublayer, a first light-emitting sublayer, and a second doped sublayer stacked on the driving substrate 30; the second light-emitting part 12 may include a third doped sublayer, a second light-emitting sublayer, and a fourth doped sublayer stacked on the driving substrate 30; the third light-emitting part 13 may include a fifth doped sublayer, a third light-emitting sublayer, and a sixth doped sublayer stacked on the driving substrate 30, wherein the materials of the first light-emitting sublayer, the second light-emitting sublayer, and the third light-emitting sublayer may all include quantum well light-emitting materials.

[0061] In some embodiments, the first light-emitting part 11, the second light-emitting part 12, and the third light-emitting part 13 all emit blue light, and the first light-emitting part 11, the second light-emitting part 12, and the third light-emitting part 13 have the same structure and material. For example, the materials of the first doped sublayer, the third doped sublayer, and the fifth doped sublayer can all include one or more of GaN, AlGaN, and AlInGaN. The materials of the first light-emitting sublayer, the second light-emitting sublayer, and the third light-emitting sublayer can all include InGaN / GaN quantum well materials. The materials of the second doped sublayer, the fourth doped sublayer, and the sixth doped sublayer can all include GaN materials.

[0062] It should be noted that the first doped sublayer, the second doped sublayer, the third doped sublayer, the fourth doped sublayer, the fifth doped sublayer, and the sixth doped sublayer can all be connected to the driving circuit in the driving substrate 30 through electrodes to realize the transmission of light emission signals to the first light-emitting part 11, the second light-emitting part 12, and the third light-emitting part 13.

[0063] In some embodiments, the materials of the first color conversion section 21 and the second color conversion section 23 are both selected from quantum dot materials or phosphor materials.

[0064] In one specific embodiment, when the third color light is red light and the fifth color light is green light, the material of the first color conversion unit 21 may include red quantum dots or red phosphors, and the material of the second color conversion unit 23 may include green quantum dots or green phosphors. The red quantum dots may be core-shell structured red quantum dots. The core-shell structured red quantum dot includes a first quantum dot core and a first shell layer covering the first quantum dot core. Specifically, the material of the first quantum dot core may be one or more of CdSe, Cd2SeTe, and InAs, and the material of the first shell layer may be one or more of CdS, ZnSe, ZnCdS2, ZnS, and ZnO. The red phosphor may be Ru-doped Y2O3. The green quantum dots may be core-shell structured green quantum dots. The core-shell structured green quantum dots include a second quantum dot core and a second shell layer covering the second quantum dot core. Specifically, the material of the second quantum dot core can be one or more of ZnCdSe2, InP, and Cd2SSe, and the material of the second shell can be one or more of CdS, ZnSe, ZnCdS2, ZnS, and ZnO. The green phosphor can be Ru-doped SrGa2S4.

[0065] It should be noted that the above-mentioned red phosphor, red quantum dot, green phosphor, and green quantum dot materials are only examples. Specific materials can be selected according to actual application needs, and this application does not limit them.

[0066] Furthermore, in some embodiments, the light-emitting functional layer 20 is provided with a plurality of grooves, and at least one of the grooves has a light-reflecting surface 201 on its sidewall; thus, when the light emitted by the first light-emitting part 11, the second light-emitting part 12 and the third light-emitting part 13 reaches the sidewall of the plurality of grooves, the light-reflecting surface 201 can reflect the light illuminating the sidewall of the groove back, so as to avoid light crosstalk and improve the light-emitting efficiency.

[0067] In some embodiments, the light-emitting functional layer 20 further includes a dielectric layer 24 and a reflective layer 25. The dielectric layer 24 has a plurality of grooves, and the reflective layer 25 is disposed on the sidewalls of the plurality of grooves. The side of the reflective layer 25 facing the inside of the groove is the light-reflecting surface 201.

[0068] It should be noted that in this embodiment, multiple grooves are formed in the dielectric layer 24, and the dielectric layer 24 is easier to pattern than metal materials. Therefore, this embodiment can reduce the difficulty of the process.

[0069] In some embodiments, the depth of the groove is less than or equal to the thickness of the dielectric layer 24, and thus the first light-emitting part 11, the second light-emitting part 12, and the third light-emitting part 13 are further spaced from the groove by a portion of the dielectric layer 24, which can protect the first light-emitting part 11, the second light-emitting part 12, and the third light-emitting part 13 from being affected by subsequent processes.

[0070] In some embodiments, the thickness H1 of the dielectric layer 24 is greater than or equal to 1 micrometer, and the thickness H2 of the dielectric layer 24 located at the bottom of the groove is greater than or equal to 1000 angstroms, and the thickness of the reflective layer 25 is greater than or equal to 500 angstroms.

[0071] In some embodiments, the material of the dielectric layer 24 may include at least one of silicon nitride and silicon oxide, and the material of the reflective layer 25 may include at least one of Al, Ag, and AlN.

[0072] The plurality of grooves include a first groove 210 disposed along the first direction X1 corresponding to the first light-emitting part 11, a second groove 220 disposed along the first direction X1 corresponding to the second light-emitting part 12, and a third groove 230 disposed along the first direction X1 corresponding to the third light-emitting part 13.

[0073] The first color conversion part 21 is disposed in the first groove 210. The first groove 210 has a light reflecting surface 201 disposed on the side wall facing the first color conversion part 21. The first color conversion part 21 can convert the first color light emitted by the first light-emitting part 11 into a third color light. When the third color light shines on the side wall of the first groove 210, the light can be reflected back by the light reflecting surface 201 to avoid light crosstalk and improve the light emission efficiency of the first light-emitting part 11.

[0074] No color conversion part is provided in the second groove 220 so that the second color light emitted by the second light-emitting part 12 can pass through directly. The side wall of the second groove 220 is provided with the light reflecting surface 201. When the second color light shines on the side wall of the second groove 220, the light can be reflected back by the light reflecting surface 201 to avoid light crosstalk and improve the light emission efficiency of the second light-emitting part 12.

[0075] The second color conversion part 23 is disposed in the third groove 230. The side wall of the third groove 230 facing the second color conversion part 23 is provided with the light reflecting surface 201. The second color conversion part 23 can convert the fourth color light emitted by the third light-emitting part 13 into the fifth color light. When the fifth color light shines on the side wall of the third groove 230, the light can be reflected back by the light reflecting surface 201 to avoid light crosstalk and improve the light emission efficiency of the third light-emitting part 13.

[0076] In this embodiment of the application, by respectively setting the first color conversion part 21 and the second color conversion part 23 in the first groove 210 and the third groove 230, the process difficulty of the color conversion part in the patterning process can be effectively reduced, and the defects such as holes on the side of the material of the color conversion part can be avoided due to over-etching on the side during the etching process, thereby improving the structural stability of the first color conversion part 21 and the second color conversion part 23.

[0077] In some embodiments, the display panel further includes a protective layer 26, which covers the side of the light-emitting functional layer 20 away from the light-emitting layer 10 and / or the light-reflecting surface 201. Specifically, the protective layer 26 covers the side of the dielectric layer 24 away from the light-emitting layer 10, the reflective layer 25, and the bottom surface of the groove. The first color conversion part 21 and the second color conversion part 23 are respectively disposed in the first groove 210 and the third groove 230, and are located on the side of the protective layer 26 away from the light-emitting layer 10. Thus, the protective layer 26 can provide protection for the reflective layer 25, preventing the reflective layer 25 from being corroded in subsequent processes.

[0078] In some embodiments, the thickness of the protective layer 26 is greater than or equal to 500 angstroms.

[0079] It should be noted that no color conversion part is provided in the second groove 220, the protective layer 26 covers the side wall and bottom of the second groove 220, and the second color light can directly pass through the second groove 220. Therefore, the protective layer 26 located in the second groove 220 can be regarded as the light-transmitting part 22, that is, the light-transmitting part 22 includes the protective layer 26 located in the second groove 220.

[0080] In some embodiments, the size of the groove along the second direction X2 is larger than the size of the first light-emitting part 11 along the second direction X2, the size of the groove along the second direction X2 is larger than the size of the second light-emitting part 12 along the second direction X2, and the size of the groove along the second direction X2 is larger than the size of the third light-emitting part 13 along the second direction X2, wherein the second direction X2 is perpendicular to the first direction X1; thereby, more light emitted by the first light-emitting part 11, the second light-emitting part 12, and the third light-emitting part 13 can illuminate the multiple grooves and be reflected by the light-reflecting surface 201 of the groove sidewall, so as to reduce light crosstalk and improve the light emission efficiency of the display panel.

[0081] In some embodiments, the surface of the first color conversion part 21 away from the light-emitting layer 10 and the surface of the second color conversion part 23 away from the light-emitting layer 10 can be flush with the surface of the protective layer 26 away from the light-emitting layer 10 and located outside the groove, so as to improve the flatness of the film layer in the display panel, reduce stress concentration, and improve the yield of the display panel.

[0082] As described above, when the display panel is in the display state, the first light-emitting part 11 emits a first color light, the second light-emitting part 12 emits a second color light, and the third light-emitting part 13 emits a fourth color light. The first color conversion part 21 converts the first color light into a third color light, and the second color conversion part 23 converts the fourth color light into a fifth color light. The second color light passes through the light-transmitting part 22. Therefore, the light emitted by the light-emitting layer 10 can emit the second color light, the third color light, and the fifth color light after passing through the light-emitting functional layer 20. For example, when the first color light, the second color light, and the fourth color light are all blue light, the third color light is one of red light and green light, and the fifth color light is the other of red light and green light, the display panel provided in this application embodiment can achieve full-color display without the need for mass transfer, reducing the process difficulty of high-resolution display panels and effectively realizing higher resolution display panels.

[0083] In some other embodiments of this application, please refer to FIG2, which differs from the embodiment shown in FIG1 in that: the light-transmitting portion 22 includes a transparent filling material 221 disposed in the second groove 220, and the light-reflecting surface 201 is disposed on the sidewall of the second groove 220 facing the transparent filling material 221.

[0084] It is understood that the light-transmitting portion 22 may also include the protective layer 26 located within the second groove 220.

[0085] In some embodiments, the transparent filler material 221 may include a transparent material, such as a transparent photoresist material or a polyester fiber material.

[0086] In some embodiments, the surfaces of the first color conversion portion 21 away from the light-emitting layer 10, the second color conversion portion 23 away from the light-emitting layer 10, and the light-transmitting portion 22 away from the light-emitting layer 10 can all be flush with the surface of the protective layer 26 away from the light-emitting layer 10 and located outside the groove, so as to improve the flatness of the film layer in the display panel, reduce stress concentration, and improve the yield of the display panel.

[0087] As described above, the display panel provided in this application embodiment can achieve full-color display without the need for mass transfer, reducing the process difficulty of high-resolution display panels and effectively realizing higher resolution display panels.

[0088] In some embodiments of this application, please refer to FIG3. The difference between FIG3 and the embodiment shown in FIG1 is that the light-emitting functional layer 20 includes a metal layer 27, the metal layer 27 having a plurality of grooves, and the sidewall of the metal layer 27 in the grooves being the light-reflecting surface 201.

[0089] In this embodiment, the metal layer 27 is directly patterned to form a plurality of grooves in the metal layer 27, and the sidewall of the metal layer 27 located in the grooves can serve as the light reflecting surface 201.

[0090] In some embodiments, the depth of the groove is equal to the thickness of the metal layer 27; that is, the groove needs to penetrate the metal layer 27 so that the position corresponding to the groove can transmit light, and avoid the metal layer 27 blocking the light emission of the light-emitting layer 10 below it.

[0091] In some embodiments, the material of the metal layer 27 may include at least one of Al, Ag, and AlN, and the thickness of the metal layer 27 is greater than or equal to 1 micrometer.

[0092] In this embodiment, the protective layer 26 covers the side of the metal layer 27 away from the light-emitting layer 10, as well as the sidewall and bottom surface of the groove. The first color conversion part 21 and the second color conversion part 23 are both located on the side of the protective layer 26 away from the light-emitting layer 10 and are respectively located in the first groove 210 and the third groove 230.

[0093] In this embodiment, the light-emitting layer 10 further includes a cover layer 15 covering the surface of the spacer layer 14, the first light-emitting part 11, the second light-emitting part 12 and the third light-emitting part 13 away from the driving substrate 30, and the light-emitting functional layer 20 is located on the side of the cover layer 15 away from the light-emitting layer 10.

[0094] In some embodiments, the material of the capping layer 15 may include at least one of a silicon oxide layer and a silicon nitride layer, and the thickness of the capping layer 15 is greater than or equal to 1000 angstroms.

[0095] As described above, the display panel provided in this application embodiment can achieve full-color display without the need for mass transfer, reducing the process difficulty of high-resolution display panels and effectively realizing higher resolution display panels. Furthermore, in this application embodiment, the groove and the light-reflecting surface 201 are formed directly by patterning the metal layer 27. Therefore, compared with the embodiment shown in FIG1 which uses a reflective layer 25 to form the light-reflecting surface 201, the thickness of the film layer used for reflection in this embodiment is much greater than that of the reflective layer 25, which can effectively improve the reflective effect of the light-reflecting surface 201.

[0096] In some embodiments of this application, please refer to FIG4. The difference between this embodiment and the embodiment shown in FIG3 is that the light-transmitting part 22 includes a transparent filling material 221 disposed in the second groove 220, and the light-reflecting surface 201 is disposed on the side wall of the second groove 220 facing the transparent filling material 221.

[0097] In some embodiments, the transparent filler material 221 may include a transparent material, such as a transparent photoresist material or a polyester fiber material.

[0098] In some embodiments, the surfaces of the first color conversion portion 21 away from the light-emitting layer 10, the second color conversion portion 23 away from the light-emitting layer 10, and the light-transmitting portion 22 away from the light-emitting layer 10 can all be flush with the surface of the protective layer 26 away from the light-emitting layer 10 and located outside the groove, so as to improve the flatness of the film layer in the display panel, reduce stress concentration, and improve the yield of the display panel.

[0099] As described above, the display panel provided in this application embodiment can achieve full-color display without the need for mass transfer, reducing the process difficulty of high-resolution display panels and effectively realizing higher resolution display panels.

[0100] In some embodiments of this application, please refer to Figure 5. The difference between this embodiment and the one shown in Figure 2 is that the display panel further includes a Bragg reflector layer 40 disposed on the side of the light-emitting functional layer 20 away from the light-emitting layer 10. The Bragg reflector layer 40 at least covers the first color conversion part 21. The Bragg reflector layer 40 has a through hole 401 in the first direction X1 corresponding to the light-transmitting part 22. The Bragg reflector layer 40 reflects the first color light and the second color light, and transmits at least the third color light. The Bragg reflector layer 40 can reflect the first color light back to the first color conversion part 21 to improve the utilization rate of the first color light. On the other hand, the Bragg reflector layer 40 is also provided with a through hole 401 corresponding to the light-transmitting part 22. Therefore, the Bragg reflector layer 40 will not block the emission of the second color light, so as to realize the color display function of the display panel.

[0101] Furthermore, in some embodiments, the Bragg reflective layer 40 covers the first color conversion part 21 and the second color conversion part 23. The Bragg reflective layer 40 has a through hole 401 along the first direction X1 corresponding to the light-transmitting part 22. The Bragg reflective layer 40 reflects the first color light, the second color light and the fourth color light, and transmits the third color light and the fifth color light. When the first color light, the second color light and the fourth color light are all blue light, the embodiments of this application can effectively reduce blue light leakage, reflect and reuse blue light, and effectively improve the utilization efficiency of blue light.

[0102] In some embodiments, the Bragg reflector layer 40 includes a plurality of first sub-layers 41 and a plurality of second sub-layers 42 stacked and alternately arranged along the first direction X1; wherein the material of the first sub-layers 41 includes silicon oxide, such as silicon dioxide, and the material of the second sub-layers 42 includes titanium oxide, such as titanium trioxide.

[0103] In some embodiments, the thickness of the first sublayer 41 can be one-quarter of the wavelength of the second color light, and the thickness of the second sublayer 42 can be one-quarter of the wavelength of the second color light.

[0104] Continuing from the above, the display panel provided in this application embodiment can achieve full-color display without the need for mass transfer, reducing the process difficulty of high-resolution display panels and effectively realizing higher resolution display panels. In addition, this application embodiment forms a Bragg reflection layer 40 on one side of the light-emitting functional layer 20, allowing third and fifth color light to pass through, and the through-hole 401 in the Bragg reflection layer 40 allows second color light to pass through, thus not affecting the full-color display of the display panel. Furthermore, the Bragg reflection layer 40 can reflect the first, second, and fourth color light, improving the light utilization rate of the display panel.

[0105] In some embodiments of this application, please refer to Figure 6. The difference between this embodiment and the one shown in Figure 4 is that the display panel further includes a Bragg reflector layer 40 disposed on the side of the light-emitting functional layer 20 away from the light-emitting layer 10. The Bragg reflector layer 40 at least covers the first color conversion part 21. The Bragg reflector layer 40 has a through hole 401 in the first direction X1 corresponding to the light-transmitting part 22. The Bragg reflector layer 40 reflects the first color light and the second color light, and transmits at least the third color light. The Bragg reflector layer 40 can reflect the first color light back to the first color conversion part 21 to improve the utilization rate of the first color light. On the other hand, the Bragg reflector layer 40 is also provided with a through hole 401 corresponding to the light-transmitting part 22. Therefore, the Bragg reflector layer 40 will not block the light emission of the second color light, so as to realize the color display function of the display panel.

[0106] Furthermore, in some embodiments, the Bragg reflective layer 40 covers the first color conversion part 21 and the second color conversion part 23. The Bragg reflective layer 40 has a through hole 401 along the first direction X1 corresponding to the light-transmitting part 22. The Bragg reflective layer 40 reflects the first color light, the second color light and the fourth color light, and transmits the third color light and the fifth color light.

[0107] In one specific embodiment, the first color light, the second color light, and the fourth color light are all blue light. This embodiment can effectively reduce blue light leakage, reflect the blue light, and reuse it, thereby effectively improving the utilization efficiency of blue light.

[0108] In some embodiments, the Bragg reflector layer 40 includes a plurality of first sub-layers 41 and a plurality of second sub-layers 42 stacked and alternately arranged along the first direction X1; wherein the material of the first sub-layers 41 includes silicon oxide, such as silicon dioxide, and the material of the second sub-layers 42 includes titanium oxide, such as titanium trioxide.

[0109] In some embodiments, the thickness of the first sublayer 41 can be one-quarter of the wavelength of the second color light, and the thickness of the second sublayer 42 can be one-quarter of the wavelength of the second color light.

[0110] Continuing from the above, the display panel provided in this application embodiment can achieve full-color display without the need for mass transfer, reducing the process difficulty of high-resolution display panels and effectively realizing higher resolution display panels. In addition, this application embodiment forms a Bragg reflection layer 40 on one side of the light-emitting functional layer 20, allowing third and fifth color light to pass through, and the through-hole 401 in the Bragg reflection layer 40 allows second color light to pass through, thus not affecting the full-color display of the display panel. Furthermore, the Bragg reflection layer 40 can reflect the first, second, and fourth color light, improving the light utilization rate of the display panel.

[0111] It should be noted that the display panel provided in this application embodiment also includes an encapsulation layer (not shown in the figure), and the encapsulation layer may cover the side of the light-emitting functional layer 20 away from the light-emitting layer 10, or the encapsulation layer may cover the side of the Bragg reflector layer 40 away from the light-emitting layer 10.

[0112] In some embodiments, the encapsulation layer may be an inorganic layer, and the material of the inorganic layer may include at least one of silicon nitride or silicon oxide, and the encapsulation layer may be prepared by chemical vapor deposition or atomic layer deposition.

[0113] In addition, this application embodiment also provides a method for manufacturing the display panel described in the above embodiments. In some embodiments, referring to Figures 1, 7, and 8, the method for manufacturing the display panel includes:

[0114] A driving substrate 30 is provided, and the driving substrate 30 includes a silicon material substrate and a driving circuit formed on the silicon material substrate.

[0115] A bonding metal layer is deposited on the driving substrate 30.

[0116] A light-emitting material layer is formed on the substrate, and a transparent conductive layer and a bonding metal layer are deposited on the surface of the light-emitting material layer. The light-emitting material layer and the driving substrate 30 are bonded together through the bonding metal layer, and then the substrate is peeled off.

[0117] The light-emitting material layer is patterned to form a light-emitting layer 10, and a plurality of light-emitting parts are formed in the light-emitting layer 10 at intervals, such as a first light-emitting part 11, a second light-emitting part 12 and a third light-emitting part 13 at intervals.

[0118] In some embodiments, the first light-emitting part 11 can emit light of a first color, the second light-emitting part 12 can emit light of a second color, and the third light-emitting part 13 can emit light of a fourth color, wherein the first color light, the second color light, and the fourth color light can all be blue light.

[0119] A spacer layer 14 is deposited on the driving substrate 30, and the spacer layer 14 fills the spaces between the first light-emitting part 11, the second light-emitting part 12 and the third light-emitting part 13 that are spaced apart; then the spacer layer 14 extending beyond the top of the plurality of light-emitting parts can be ground flat.

[0120] A dielectric layer 24 is deposited on the side of the light-emitting layer 10 away from the driving substrate 30, and the thickness of the dielectric layer 24 can be greater than or equal to 1 micrometer.

[0121] The dielectric layer 24 is patterned to form a plurality of grooves in the dielectric layer 24. For example, the plurality of grooves may include a first groove 210 corresponding to the first light-emitting part 11 along the first direction X1, a second groove 220 corresponding to the second light-emitting part 12 along the first direction X1, and a third groove 230 corresponding to the third light-emitting part 13 along the first direction X1, wherein the first direction X1 is the thickness direction of the display panel.

[0122] The depth of the groove is less than the thickness of the dielectric layer 24, and the thickness of the dielectric layer 24 corresponding to the bottom of the groove is greater than or equal to 1000 angstroms; the dimension of the groove along the second direction X2 is greater than the dimension of the first light-emitting part 11 along the second direction X2, the dimension of the groove along the second direction X2 is greater than the dimension of the second light-emitting part 12 along the second direction X2, and the dimension of the groove along the second direction X2 is greater than the dimension of the third light-emitting part 13 along the second direction X2, and the second direction X2 is perpendicular to the first direction X1; thereby, more light emitted by the first light-emitting part 11, the second light-emitting part 12, and the third light-emitting part 13 can be directed into the multiple grooves and reflected by the light-reflecting surface 201 of the groove sidewall, so as to reduce light crosstalk and improve the light emission efficiency of the display panel.

[0123] In some embodiments, the materials of both the spacer layer 14 and the dielectric layer 24 include at least one of silicon oxide or silicon nitride.

[0124] In other embodiments of this application, after the patterned light-emitting layer 10 is formed, a dielectric material can be deposited on the driving substrate 30, and the dielectric material fills the spaces between adjacent spaced-apart first light-emitting portions 11, second light-emitting portions 12, and third light-emitting portions 13, and the dielectric material extends beyond the tops of the first light-emitting portions 11, second light-emitting portions 12, and third light-emitting portions 13; then, the dielectric material extending beyond the tops of the first light-emitting portions 11, second light-emitting portions 12, and third light-emitting portions 13 is patterned to form a plurality of grooves, that is, the dielectric material filling the spaces between the spaced-apart first light-emitting portions 11, second light-emitting portions 12, and third light-emitting portions 13 is the spacer layer 14, and the dielectric material extending beyond the tops of the first light-emitting portions 11, second light-emitting portions 12, and third light-emitting portions 13 is the dielectric layer 24.

[0125] Following that, a reflective metal layer is formed on the side of the dielectric layer 24 away from the driving substrate 30, and the reflective metal layer is patterned to form a reflective layer 25 located on the sidewall of the groove.

[0126] In some embodiments, the thickness of the reflective layer 25 is greater than or equal to 500 angstroms, and the material of the reflective layer 25 may include at least one of Al, Ag, and AlN.

[0127] A protective layer 26 is formed on the side of the dielectric layer 24 and the light-emitting layer 10 away from the driving substrate 30, and the protective layer 26 covers the side of the dielectric layer 24 away from the light-emitting layer 10, the reflective layer 25, and the bottom surface of the groove, as shown in FIG7.

[0128] In some embodiments, the thickness of the protective layer 26 is greater than or equal to 500 angstroms.

[0129] A first color conversion material layer is formed on the protective layer 26, and the first color conversion material layer is patterned to retain the first color conversion material layer located in the first groove 210 and remove the first color conversion material layer in other positions to form the first color conversion part 21, as shown in FIG8.

[0130] Next, a second color conversion material layer is formed on the protective layer 26, and the second color conversion material layer is patterned to retain the second color conversion material layer located in the third groove 230, and remove the second color conversion material layer in other positions to form the second color conversion part 23.

[0131] In some embodiments, the first color conversion unit 21 is used to convert the first color light into the third color light, and the second color conversion unit 23 is used to convert the fourth color light into the fifth color light, wherein the third color light is one of red light and green light, and the fifth color light is the other of red light and green light.

[0132] Then, a transparent material layer is formed on the protective layer 26, and the transparent material layer is patterned to retain the transparent material layer located in the second groove 220 and remove the transparent material layer in other locations to form the transparent filler material 221, as shown in FIG1.

[0133] In other embodiments of this application, referring to Figures 6, 9, and 11, the method for manufacturing the display panel includes:

[0134] A driving substrate 30 is provided, and the driving substrate 30 includes a silicon material substrate and a driving circuit formed on the silicon material substrate.

[0135] A bonding metal layer is deposited on the driving substrate 30.

[0136] A light-emitting material layer is formed on the substrate, and a transparent conductive layer and a bonding metal layer are deposited on the surface of the light-emitting material layer. The light-emitting material layer and the driving substrate 30 are bonded together through the bonding metal layer, and then the substrate is peeled off.

[0137] The light-emitting material layer is patterned to form a light-emitting layer 10, and a plurality of light-emitting parts are formed in the light-emitting layer 10 at intervals, such as a first light-emitting part 11, a second light-emitting part 12 and a third light-emitting part 13 at intervals.

[0138] In some embodiments, the first light-emitting part 11 can emit light of a first color, the second light-emitting part 12 can emit light of a second color, and the third light-emitting part 13 can emit light of a fourth color, wherein the first color light, the second color light, and the fourth color light can all be blue light.

[0139] A spacer layer 14 is deposited on the driving substrate 30, and the spacer layer 14 fills the space between the first light-emitting part 11, the second light-emitting part 12 and the third light-emitting part 13 that are spaced apart; then the spacer layer 14 that extends beyond the top of the plurality of light-emitting parts can be ground flat.

[0140] A capping layer 15 is deposited on the side of the light-emitting layer 10 away from the driving substrate 30, and the thickness of the capping layer 15 may be greater than or equal to 1000 angstroms.

[0141] In other embodiments of this application, after the patterned light-emitting layer 10 is formed, a dielectric material can be deposited on the driving substrate 30, and the dielectric material fills the spaces between adjacent spaced-apart first light-emitting portions 11, second light-emitting portions 12, and third light-emitting portions 13, with the dielectric material extending beyond the tops of the first light-emitting portions 11, second light-emitting portions 12, and third light-emitting portions 13; then, the dielectric material extending beyond the tops of the first light-emitting portions 11, second light-emitting portions 12, and third light-emitting portions 13 is patterned to form a plurality of grooves, i.e., the dielectric material filling the spaces between the spaced-apart first light-emitting portions 11, second light-emitting portions 12, and third light-emitting portions 13 is the spacer layer 14, and the dielectric material extending beyond the tops of the first light-emitting portions 11, second light-emitting portions 12, and third light-emitting portions 13 is the cover layer 15.

[0142] In some embodiments, the materials of the spacer layer 14 and the cover layer 15 both include at least one of silicon oxide or silicon nitride.

[0143] Continuing on the above, a metal material layer is deposited on the cover layer 15, and the metal material layer is patterned to form a metal layer 27. The metal layer 27 has a plurality of grooves. For example, the plurality of grooves may include a first groove 210 corresponding to the first light-emitting part 11 along the first direction X1, a second groove 220 corresponding to the second light-emitting part 12 along the first direction X1, and a third groove 230 corresponding to the third light-emitting part 13 along the first direction X1. The first direction X1 is the thickness direction of the display panel.

[0144] The depth of the groove is equal to the thickness of the metal layer 27, and the thickness of the metal layer 27 is greater than or equal to 1 micrometer. The dimension of the groove along the second direction X2 is greater than the dimension of the first light-emitting part 11 along the second direction X2, the dimension of the groove along the second direction X2 is greater than the dimension of the second light-emitting part 12 along the second direction X2, and the dimension of the groove along the second direction X2 is greater than the dimension of the third light-emitting part 13 along the second direction X2. The second direction X2 is perpendicular to the first direction X1. This allows more light emitted by the first light-emitting part 11, the second light-emitting part 12, and the third light-emitting part 13 to illuminate the multiple grooves and be reflected by the light-reflecting surface 201 on the sidewall of the groove, thereby reducing light crosstalk and improving the light emission efficiency of the display panel.

[0145] In some embodiments, the material of the metal layer 27 may include at least one of Al, Ag, and AlN.

[0146] A protective layer 26 is formed on the side of the metal layer 27 away from the driving substrate 30, and the protective layer 26 covers the side of the metal layer 27 away from the light-emitting layer 10 and the bottom surface of the groove, as shown in FIG9.

[0147] In some embodiments, the thickness of the protective layer 26 is greater than or equal to 500 angstroms.

[0148] A first color conversion material layer is formed on the protective layer 26, and the first color conversion material layer is patterned to retain the first color conversion material layer located in the first groove 210 and remove the first color conversion material layer in other positions to form the first color conversion part 21, as shown in FIG10.

[0149] Next, a second color conversion material layer is formed on the protective layer 26, and the second color conversion material layer is patterned to retain the second color conversion material layer located in the third groove 230, and remove the second color conversion material layer in other positions to form the second color conversion part 23.

[0150] In some embodiments, the first color conversion unit 21 is used to convert the first color light into the third color light, and the second color conversion unit 23 is used to convert the fourth color light into the fifth color light, wherein the third color light is one of red light and green light, and the fifth color light is the other of red light and green light.

[0151] Then, a transparent material layer is formed on the protective layer 26, and the transparent material layer is patterned to retain the transparent material layer located in the second groove 220 and remove the transparent material layer in other locations to form the transparent filler material 221, as shown in FIG11.

[0152] A Bragg reflection layer 40 is formed on the side of the protective layer 26, the first color conversion part 21, the light transmission part 22 and the second color conversion part 23 away from the driving substrate 30. The Bragg reflection layer 40 is used to reflect the first color light, the second color light and the fourth color light, and to transmit the third color light and the fifth color light.

[0153] The Bragg reflector layer 40 is patterned to form through holes 401 in the Bragg reflector layer 40 that correspond to the first light-emitting part 11 along the first direction X1, as shown in FIG6.

[0154] In some embodiments, the Bragg reflector layer 40 includes a plurality of first sub-layers 41 and a plurality of second sub-layers 42 stacked and alternately arranged along the first direction X1; wherein the material of the first sub-layers 41 includes silicon oxide, such as silicon dioxide, and the material of the second sub-layers 42 includes titanium oxide, such as titanium trioxide.

[0155] In some embodiments, the thickness of the first sublayer 41 can be one-quarter of the wavelength of the second color light, and the thickness of the second sublayer 42 can be one-quarter of the wavelength of the second color light.

[0156] Continuing from the above, when the display panel is in the display state, the first light-emitting part 11 emits a first color light, the second light-emitting part 12 emits a second color light, and the third light-emitting part 13 emits a fourth color light. The first color conversion part 21 converts the first color light into a third color light, and the second color conversion part 23 converts the fourth color light into a fifth color light. The second color light passes through the light-transmitting part 22, and thus the light emitted by the light-emitting layer 10, after passing through the light-emitting functional layer 20, can emit the second color light, the third color light, and the fifth color light. For example, when the first color light, the second color light, and the fourth color light... All colors are blue light, the third color light is one of red light and green light, and the fifth color light is the other of red light and green light. Therefore, the display panel provided in this application embodiment can achieve full-color display without mass transfer, reducing the process difficulty of high-resolution display panels and effectively realizing higher resolution display panels. In addition, by forming a light reflective surface 201 on the sidewall of the groove, this application embodiment can reduce light crosstalk and improve light extraction efficiency. Furthermore, this application embodiment can also form the Bragg reflective layer 40 on the side of the light extraction functional layer 20 away from the light-emitting layer 10 to improve light utilization and light extraction efficiency.

[0157] In addition, this application embodiment also provides a display device, which includes a device body and a display panel, wherein the device body and the display panel are combined into one unit, and the display panel can be the display panel described in the above embodiment.

[0158] In some embodiments, the main body of the device may include a frame, a driving component, and a power supply, etc., which are not limited herein.

[0159] It is understood that the display device provided in this application includes the display panel described in the above embodiments. Therefore, the display device has the same beneficial effects as the display panel described in the above embodiments, and will not be repeated here.

[0160] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0161] The above provides a detailed description of a display panel and display device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, comprising: a light emitting layer comprising a first light emitting part and a second light emitting part arranged at intervals, the first light emitting part emitting a first color light when the display panel is in a display state, the second light emitting part emitting a second color light when the display panel is in the display state; and a light emitting functional layer arranged on one side of the light emitting layer, the light emitting functional layer comprising: a first color conversion part arranged corresponding to the first light emitting part along a first direction, and a light transmitting part arranged corresponding to the second light emitting part along the first direction; wherein the first direction is a thickness direction of the display panel, the first color conversion part is configured to convert the first color light into a third color light, the third color light being different from the first color light. A plurality of recesses are arranged in the light emitting functional layer, and a light reflecting surface is arranged on a sidewall of at least one of the recesses; 2. The display panel of claim 1, wherein, The plurality of recesses comprise a first recess arranged corresponding to the first light emitting part along the first direction, and a second recess arranged corresponding to the second light emitting part along the first direction, the first color conversion part is arranged in the first recess, and the light transmitting part is arranged in the second recess. The light transmitting part comprises a transparent filling material arranged in the second recess, and the sidewall of the second recess towards the transparent filling material is provided with the light reflecting surface.

3. The display panel of claim 2, wherein, The light emitting functional layer further comprises a dielectric layer and a light reflecting layer, the dielectric layer is arranged on one side of the light emitting layer, a plurality of recesses are arranged in the dielectric layer, and the light reflecting layer is arranged on sidewalls of the recesses, one side of the light reflecting layer towards the recesses being the light reflecting surface.

4. The display panel of claim 2, wherein, The depth of the recesses is less than or equal to the thickness of the dielectric layer.

5. The display panel of claim 4, wherein, The light emitting functional layer further comprises a metal layer, the metal layer is arranged on one side of the light emitting layer, a plurality of recesses are arranged in the metal layer, and the sidewall of the metal layer towards the recesses is the light reflecting surface.

6. The display panel of claim 2, wherein, The depth of the recesses is equal to the thickness of the metal layer.

7. The display panel of claim 6, wherein, The light emitting layer further comprises a third light emitting part arranged at intervals from the first light emitting part and the second light emitting part, the third light emitting part emitting a fourth color light when the display panel is in the display state; 8. The display panel of claim 2, wherein, The plurality of recesses comprise a third recess arranged corresponding to the third light emitting part along the first direction; The light emitting functional layer comprises a second color conversion part arranged in the third recess, the second color conversion part being configured to convert the fourth color light into a fifth color light, the second color light, the third color light and the fifth color light being different from each other in color. The material of the first color conversion part and the material of the second color conversion part are selected from quantum dot materials or fluorescent powder materials.

9. The display panel of claim 8, wherein, The first color light, the second color light and the fourth color light are the same in color.

10. The display panel of claim 8, wherein, The first color light, the second color light and the fourth color light are blue light, the third color light is one of red light and green light, and the fifth color light is the other of red light and green light.

11. The display panel of claim 8, wherein, ​ 12. The display panel of claim 2, wherein, The display panel further comprises a protective layer covering one side of the light-emitting functional layer away from the light-emitting layer; and / or The protective layer covers the light-reflecting surface.

13. The display panel of claim 1, wherein, The display panel further comprises a Bragg reflection layer arranged on the side of the light-emitting functional layer away from the light-emitting layer, the Bragg reflection layer covering at least the first color conversion part, the Bragg reflection layer having a through hole corresponding to the light-transmitting part along the first direction, the Bragg reflection layer reflecting the first color light and the second color light and transmitting at least the third color light.

14. The display panel of claim 13, wherein, The Bragg reflection layer comprises a plurality of first sub-layers and a plurality of second sub-layers stacked and arranged alternately along the first direction; The material of the first sub-layer comprises a silicon oxide material, and the material of the second sub-layer comprises a titanium oxide material.

15. A display device comprising a display panel, the display panel comprising: comprising: a light-emitting layer comprising a first light-emitting part and a second light-emitting part arranged at intervals, the first light-emitting part emitting a first color light when the display panel is in a display state, and the second light-emitting part emitting a second color light when the display panel is in a display state; and a light-emitting functional layer arranged on one side of the light-emitting layer, the light-emitting functional layer comprising: a first color conversion part arranged corresponding to the first light-emitting part along a first direction, and a light-transmitting part arranged corresponding to the second light-emitting part along the first direction; wherein the first direction is the thickness direction of the display panel, the first color conversion part is used for converting the first color light into a third color light, and the third color light is different in color from the first color light.

16. The display device of claim 15, wherein, A plurality of recesses are arranged in the light-emitting functional layer, and the sidewall of at least one of the recesses is provided with a light-reflecting surface; The plurality of recesses comprise a first recess arranged corresponding to the first light-emitting part along the first direction and a second recess arranged corresponding to the second light-emitting part along the first direction, the first color conversion part is arranged in the first recess, and the light-transmitting part is arranged in the second recess.

17. The display device of claim 16, wherein, The light-transmitting part comprises a transparent filling material arranged in the second recess, and the sidewall of the second recess towards the transparent filling material is provided with the light-reflecting surface.

18. The display device of claim 16, wherein, The light-emitting functional layer further comprises a dielectric layer and a light-reflecting layer, the dielectric layer is arranged on one side of the light-emitting layer, a plurality of recesses are arranged in the dielectric layer, and the light-reflecting layer is arranged on the sidewall of the plurality of recesses, one side of the light-reflecting layer towards the recesses being the light-reflecting surface.

19. The display device of claim 16, wherein, The light-emitting functional layer further comprises a metal layer, the metal layer is arranged on one side of the light-emitting layer, a plurality of recesses are arranged in the metal layer, and the sidewall of the metal layer towards the recesses is the light-reflecting surface.

20. The display device of claim 16, wherein, The light-emitting layer further comprises a third light-emitting part arranged at intervals from the first light-emitting part and the second light-emitting part, the third light-emitting part emitting a fourth color light when the display panel is in a display state; The plurality of recesses comprise a third recess arranged corresponding to the third light-emitting part along the first direction; The light-exiting function layer comprises a second color conversion part, the second color conversion part is arranged in the third groove, the second color conversion part is used for converting the fourth color light into a fifth color light, the second color light, the third color light and the fifth color light are different color lights from each other.

Images