Display panel and manufacturing method thereof, and display device

Abstract

The embodiment of the present invention discloses a display panel and a manufacturing method thereof, and a display device; the display panel includes a driving circuit layer, a plurality of light-emitting units located on the driving circuit layer, a functional protection layer arranged at intervals from each of the light-emitting units, and a light-shielding layer, the functional protection layer includes a plurality of openings, at least two of the light-emitting units are arranged in any of the openings, and the light-shielding layer is at least arranged in each of the openings and located between each of the light-emitting units; the present invention forms a functional protection layer including a plurality of openings on the driving circuit layer, and a fluid microchannel is formed corresponding to the opening and the gap between two adjacent light-emitting units. When applying a light-shielding material film, the fluid microchannel is used to guide the light-shielding material film to the light-emitting unit, and the capillary action of the gap between the light-emitting units is used to make the light-shielding material film extend and flow toward the top of the light-emitting unit to cover the side wall of the light-emitting unit, thereby avoiding the problem of optical crosstalk between two adjacent light-emitting units and protecting the driving circuit layer.

Description

Technical Field

[0001] The present invention relates to the field of display, and in particular to a display panel and a manufacturing method thereof, and a display device. Background Art

[0002] In recent years, Micro LED and Mini LED have become the most forward-looking new display technologies. Optical crosstalk is prone to occur between two adjacent light-emitting units. At present, black glue is filled in the gap between two adjacent light-emitting units to absorb the light emitted from the side. There are currently two black glue filling technologies. One is the molding method, that is, the black glue is squeezed into the gap between the light-emitting units by pressure. This method will cause pressure damage to the light-emitting units and the driving circuit layer; the other is the inkjet printing method, that is, the black material is directly printed in the gap between the light-emitting units. Due to the limitations of the printing line width accuracy and thickness of the printing equipment, this method is difficult to apply to light-emitting units with small spacing, and even affects the normal light output.

[0003] Therefore, there is an urgent need for a display panel and a manufacturing method thereof, and a display device to solve the above technical problems. Summary of the invention

[0004] The present invention provides a display panel and a manufacturing method thereof, and a display device, which can improve the current light crosstalk problem of light emitting units and protect the driving circuit layer at the same time.

[0005] The present invention provides a display panel, comprising:

[0006] Driving circuit layer;

[0007] A plurality of light-emitting units are located on the driving circuit layer and are electrically connected to the driving circuit layer;

[0008] a functional protection layer, located on the driving circuit layer and spaced apart from each of the light-emitting units, the functional protection layer comprising a plurality of openings, and at least two of the light-emitting units are disposed in any of the openings;

[0009] The light shielding layer is at least disposed in each of the openings and located between each of the light emitting units.

[0010] Preferably, three of the light-emitting units are arranged in any one of the openings, and the display colors corresponding to the three light-emitting units are red, green and blue, respectively.

[0011] Preferably, the light-shielding layer is overlapped on the functional protection layer.

[0012] Preferably, the functional protection layer includes a plurality of protection units arranged at intervals, and any of the protection units includes an opening.

[0013] Preferably, the thickness of the light-shielding layer between the light-emitting unit and the corresponding functional protection layer is greater than the thickness of the corresponding functional protection layer.

[0014] Preferably, the distance between the surface of the light shielding layer away from the driving circuit layer and the driving circuit layer is less than or equal to the distance between the surface of the corresponding light emitting unit away from the driving circuit layer and the driving circuit layer.

[0015] Preferably, the distance between the edge of the functional protection layer close to one side of any one of the openings and the light-emitting unit in the corresponding opening is 10um to 500um; and the distance between two adjacent light-emitting units in the same opening is 50um to 80um.

[0016] The present invention also provides a method for manufacturing a display panel, comprising:

[0017] Forming a driving circuit layer including a plurality of first regions and a second region on a substrate, wherein the second regions are arranged around each of the first regions;

[0018] forming a functional protection layer including a plurality of openings in the second area on the driving circuit layer, wherein one of the openings corresponds to one of the first areas;

[0019] At least two light-emitting units are formed in the opening and spaced apart from the functional protection layer, and a fluid microchannel is formed between the opening and a gap between two adjacent light-emitting units;

[0020] A light-shielding material film is coated on the functional protection layer and close to the corresponding opening. The fluid microchannel is used to make the light-shielding material film flow and extend toward the gap between the two adjacent light-emitting units and toward the top of the light-emitting unit to form a light-shielding layer.

[0021] Preferably, the step of coating a film of shading material on the functional protective layer and close to the corresponding opening, and using the fluid microchannel to make the film of shading material flow and extend toward the gap between the two adjacent light-emitting units and toward the top of the light-emitting unit to form a shading layer includes: coating a film of shading material on the functional protective layer and close to the corresponding opening, and using the fluid microchannel to make the film of shading material flow and extend toward the gap between the two adjacent light-emitting units and toward the top of the light-emitting unit within a first time period to form a shading layer; wherein the first time period is 30s to 300s.

[0022] The present invention further provides a display device, comprising a display panel and a device body, wherein the device body and the display panel are integrated into one body;

[0023] Wherein, the display panel is any of the above-mentioned display panels or is manufactured by any of the above-mentioned display panel manufacturing methods.

[0024] Beneficial effects of the present invention: The present invention forms a functional protection layer including a plurality of openings on a driving circuit layer, and at least two light-emitting units are arranged in the openings. A fluid microchannel is formed corresponding to the opening and the gap between two adjacent light-emitting units. When a light-shielding material film is coated, the fluid microchannel is used to guide the light-shielding material film toward the light-emitting unit, and the capillary action of the gap between the light-emitting units is used to extend and flow the light-shielding material film toward the top of the light-emitting unit to cover the side wall of the light-emitting unit, thereby avoiding the problem of optical crosstalk between two adjacent light-emitting units, protecting the driving circuit layer, and improving the yield of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 is a schematic top view of a first structure of a display panel provided by an embodiment of the present invention;

[0027] Figure 2 yes Figure 1 Schematic diagram of the first structure along the C1C2 section;

[0028] Figure 3 yes Figure 1 Schematic diagram of the second structure along the C1C2 section;

[0029] Figure 4 is a schematic top view of a second structure of a display panel provided by an embodiment of the present invention;

[0030] Figure 5 yes Figure 4 Schematic diagram of the structure along the D1D2 section;

[0031] Figure 6 is a partial structural schematic diagram of a third structure of a display panel provided by an embodiment of the present invention;

[0032] Figure 7 is a flowchart of the steps of a method for manufacturing a display panel provided by an embodiment of the present invention;

[0033] Figures 8A to 8D is a schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present invention;

[0034] Fig. 9 yes Figure 8C Schematic diagram of the structure along the E1E2 section;

[0035] Fig.10 yes Fig.8D Schematic diagram of the structure along the F1F2 section;

[0036] Fig.11 It is a schematic diagram of the structure of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inside" and "outside" refer to the outline of the device.

[0038] In recent years, Micro LED and Mini LED have become the most forward-looking new display technologies. Optical crosstalk is prone to occur between two adjacent light-emitting units. At present, black glue is filled in the gap between two adjacent light-emitting units to absorb the light emitted from the side. There are currently two black glue filling technologies. One is the molding method, that is, the black glue is squeezed into the gap between the light-emitting units by pressure. This method will cause pressure damage to the light-emitting units and the driving circuit layer; the other is the inkjet printing method, that is, the black material is directly printed in the gap between the light-emitting units. Due to the limitations of the printing line width accuracy and thickness of the printing equipment, this method is difficult to apply to light-emitting units with small spacing, and even affects the normal light output.

[0039] See also Figures 1 to 6 , an embodiment of the present invention provides a display panel 100, including:

[0040] Driving circuit layer 200;

[0041] A plurality of light emitting units 300, located on the driving circuit layer 200 and electrically connected to the driving circuit layer 200;

[0042] A functional protection layer 400 is located on the driving circuit layer 200 and is spaced apart from each of the light-emitting units 300. The functional protection layer 400 includes a plurality of openings 410. At least two of the light-emitting units 300 are disposed in any of the openings 410.

[0043] The light shielding layer 500 is at least disposed in each of the openings 410 and located between each of the light emitting units 300 .

[0044] The present invention forms a functional protection layer including a plurality of openings on a driving circuit layer, and at least two light-emitting units are arranged in the openings. A fluid microchannel is formed corresponding to the opening and the gap between two adjacent light-emitting units. When a light-shielding material film is coated, the light-shielding material film is guided toward the light-emitting unit by utilizing the fluid microchannel, and the light-shielding material film is extended and flowed toward the top of the light-emitting unit by utilizing the capillary action of the gap between the light-emitting units to cover the side wall of the light-emitting unit. This avoids the problem of optical crosstalk between two adjacent light-emitting units, protects the driving circuit layer, and improves the yield of the display panel.

[0045] The technical solution of the present invention is now described in conjunction with specific embodiments.

[0046] In this embodiment, please refer to Figure 1 , Figure 2 The display panel 100 includes a driving circuit layer 200, a plurality of light-emitting units 300 located on the driving circuit layer 200 and electrically connected to the driving circuit layer 200, a functional protection layer 400 located on the driving circuit layer 200 and spaced apart from each of the light-emitting units 300, and a light-shielding layer 500 at least disposed in each of the openings 410 and between each of the light-emitting units 300, wherein the functional protection layer 400 includes a plurality of openings 410, and at least two of the light-emitting units 300 are disposed in any of the openings 410.

[0047] The opening 410 and the gap 600 between the two adjacent light-emitting units 300 form a fluid microchannel 700 accordingly. When the shading material film 501 is coated, the functional protection layer 400 protects the driving circuit layer 200. At the same time, the step difference between the functional protection layer 400 and the film layer in the opening 410 and the leveling driving force of the fluid can guide the shading material film 501 into the opening 410 to the vicinity of the light-emitting unit 300; the gap 600 between the two adjacent light-emitting units 300 can produce a capillary action to attract the shading material film 501 to the top of the light-emitting unit 300, so that the shading material film 501 extends and flows to the top of the light-emitting unit 300 to cover the side wall of the light-emitting unit 300, thereby avoiding the optical crosstalk problem between the two adjacent light-emitting units 300 and protecting the driving circuit layer 200, thereby improving the yield of the display panel 100.

[0048] In some embodiments, see Figure 1 Three light-emitting units 300 are disposed in any of the openings 410 , and the display colors corresponding to the three light-emitting units 300 are red, green, and blue, respectively.

[0049] The light-emitting unit 300 can directly emit any color of red, green, and blue, or it can only emit blue light and perform color conversion with a color conversion layer. No specific limitation is made here. For the convenience of description, the light-emitting unit 300 corresponding to the red color is a red unit R, the light-emitting unit 300 corresponding to the green color is a green unit G, and the light-emitting unit 300 corresponding to the blue color is a blue unit B. A red unit R, a green unit G, and a blue unit B constitute a pixel, and the distance between two adjacent pixels is greater than the distance between two adjacent light-emitting units 300 in the same pixel.

[0050] One opening 410 corresponds to one pixel, which facilitates the relative independence of the pixels and also facilitates coating of the light shielding material film 501 to form the light shielding layer 500 .

[0051] In some embodiments, see Figure 3 The light shielding layer 500 overlaps the functional protection layer 400. The light shielding layer 500 and the functional protection layer 400 together surround a pixel, which is beneficial to the relative independence between pixels and provides better protection for the driving circuit layer 200 around the light emitting unit 300.

[0052] In some embodiments, see Figure 1 , Figure 2 The functional protection layer 400 includes a plurality of protection units 420 arranged at intervals, and any of the protection units 420 includes an opening 410. The protection units 420 can be arranged continuously to facilitate the coating of the light shielding material film 501 when coating the functional protection material film.

[0053] In some embodiments, see Figure 4 , Figure 5 The functional protection layer 400 includes a plurality of protection units 420 arranged at intervals, and any of the protection units 420 includes an opening 410. When coating the functional protection material film, the functional protection material can be saved, and it is also helpful to guide the light shielding material film 501 to flow into the opening 410 and the gap 600 between two adjacent light-emitting units 300.

[0054] In some embodiments, see Figure 2 , Figure 3 , Figure 5 , the thickness of the light shielding layer 500 located between the light emitting unit 300 and the corresponding functional protection layer 400 is greater than the thickness of the corresponding functional protection layer 400 .

[0055] When coating the shading material film 501, the thickness of the shading material film 501 should be greater than the thickness of the functional protection layer 400, which can facilitate the shading material film 501 to climb the gap 600 between two adjacent light-emitting units 300. The thicker shading layer 500 can also provide better protection for the driving circuit layer 200 around the light-emitting unit 300.

[0056] In some embodiments, see Figure 2 , Figure 3 , Figure 5 , the distance between the surface of the light shielding layer 500 away from the driving circuit layer 200 and the driving circuit layer 200 is less than or equal to the distance between the surface of the light emitting unit 300 away from the driving circuit layer 200 and the driving circuit layer 200.

[0057] By controlling the size of the opening 410, the leveling time of the coated light-shielding material film 501, and the curing time of the light-shielding material film 501, the climbing height of the light-shielding material film 501 can be controlled. The height of the material of the light-shielding layer 500 should not exceed the height of the light-emitting unit 300 to avoid the light-shielding layer 500 blocking the front light of the light-emitting unit 300 and affecting the normal display.

[0058] In some embodiments, the distance between the edge of the functional protection layer 400 close to any one of the openings 410 and the light-emitting unit 300 in the corresponding opening 410 is 10um to 500um; the distance between two adjacent light-emitting units 300 in the same opening 410 is 50um to 80um.

[0059] The distance between the edge of the functional protection layer 400 close to any one of the openings 410 and the light-emitting unit 300 in the corresponding opening 410 is the leveling distance of the shading material film 501. This distance should not be too large, otherwise it will lead to excessive material usage of the shading material film 501, and even fail to flow between two adjacent light-emitting units 300; the spacing between two adjacent light-emitting units 300 in the same opening 410 can have a capillary effect, and this distance should not be too small, otherwise it will easily lead to the need for high-precision coating, or even insufficient coating accuracy or difficult to control the amount of coating material, causing the shading material film 501 to climb too high, or even cover the top of the light-emitting unit 300, affecting normal display.

[0060] In some embodiments, the hydrophobicity of the light shielding layer 500 is stronger than that of the functional protection layer 400. The functional protection layer 400 may include a hydrophilic material, and the protective functional layer may better cover the driving circuit layer 200 to better protect the driving circuit layer 200; the light shielding layer 500 may include a hydrophobic material, which may better flow to the light emitting unit 300, and is more conducive to climbing the gap between two adjacent light emitting units 300, which is conducive to the capillary action of the gap 600 between the light emitting units 300 and reduces the obstacles to climbing.

[0061] In some embodiments, the light-shielding layer 500 has a stronger light-shielding ability than the functional protection layer 400. The light-shielding layer 500 has a stronger light-shielding ability, which can avoid light crosstalk between two adjacent light-emitting units 300; the functional protection layer 400 can be made of a material with strong light-reflectivity, which can increase the reflectivity of light and improve the overall light output rate of the display panel 100.

[0062] In some embodiments, the material of the light shielding layer 500 may be black oil, and the material of the functional protection layer 400 may be black oil or white oil, which is only used as an example and is not specifically limited.

[0063] In some embodiments, see Figure 8B The driving circuit layer 200 includes a plurality of first regions A and second regions B. The second regions B are arranged around each of the first regions A. One of the openings 410 corresponds to one of the first regions A.

[0064] In some embodiments, the light emitting unit 300 may include Micro LED or Mini LED, which is not specifically limited herein.

[0065] In some embodiments, see Figure 6 , the light-emitting units 300 are all blue light sources, the display panel 100 also includes a color conversion layer 800 located on the side of the light-emitting unit 300 away from the driving circuit layer 200, the color conversion layer 800 includes a plurality of red conversion units r, a plurality of green conversion units g, a plurality of blank units b and a spacing unit 810, the spacing unit 810 is located between conversion units of different colors, and the conversion units of different colors correspond one-to-one to the light-emitting units 300 of different pre-display colors.

[0066] The present invention forms a functional protection layer including a plurality of openings on a driving circuit layer, and at least two light-emitting units are arranged in the openings. A fluid microchannel is formed corresponding to the opening and the gap between two adjacent light-emitting units. When a light-shielding material film is coated, the light-shielding material film is guided toward the light-emitting unit by utilizing the fluid microchannel, and the light-shielding material film is extended and flowed toward the top of the light-emitting unit by utilizing the capillary action of the gap between the light-emitting units to cover the side wall of the light-emitting unit. This avoids the problem of optical crosstalk between two adjacent light-emitting units, protects the driving circuit layer, and improves the yield of the display panel.

[0067] See also Figure 7 The embodiment of the present invention further provides a method for manufacturing a display panel 100, comprising:

[0068] S100, forming a driving circuit layer 200 including a plurality of first regions A and second regions B on a substrate 110, wherein the second regions B are arranged around each of the first regions A;

[0069] S200, forming a functional protection layer 400 including a plurality of openings 410 in the second area B on the driving circuit layer 200, wherein one opening 410 corresponds to one first area A;

[0070] S300, forming at least two light-emitting units 300 spaced apart from the functional protection layer 400 in the opening 410, and a gap 600 between the opening 410 and two adjacent light-emitting units 300 to form a fluid microchannel 700;

[0071] S400, coating a shading material film 501 on the functional protection layer 400 and close to the corresponding opening 410, and using the fluid microchannel 700 to make the shading material film 501 flow and extend toward the gap 600 between the two adjacent light-emitting units 300 and toward the top of the light-emitting unit 300 to form a shading layer 500.

[0072] The present invention forms a functional protection layer including a plurality of openings on a driving circuit layer, and at least two light-emitting units are arranged in the openings. A fluid microchannel is formed corresponding to the opening and the gap between two adjacent light-emitting units. When a light-shielding material film is coated, the light-shielding material film is guided toward the light-emitting unit by utilizing the fluid microchannel, and the light-shielding material film is extended and flowed toward the top of the light-emitting unit by utilizing the capillary action of the gap between the light-emitting units to cover the side wall of the light-emitting unit. This avoids the problem of optical crosstalk between two adjacent light-emitting units, protects the driving circuit layer, and improves the yield of the display panel.

[0073] The technical solution of the present invention is now described in conjunction with specific embodiments.

[0074] In this embodiment, the manufacturing method of the display panel 100 includes:

[0075] S100, forming a driving circuit layer 200 including a plurality of first regions A and second regions B on a substrate 110, wherein the second regions B are arranged around each of the first regions A, see Fig. 8A .

[0076] In some embodiments, the second area B corresponds to a coating area of ​​the subsequent functional protection layer 400 .

[0077] S200, forming a functional protection layer 400 including a plurality of openings 410 in the second area B on the driving circuit layer 200, wherein one opening 410 corresponds to one first area A, see Figure 8B .

[0078] In some embodiments, step S200 includes:

[0079] S210 , forming a functional protection material film around the first area A on the driving circuit layer 200 .

[0080] In some embodiments, the thickness of the functional protection material film may be 1 um to 20 um, which is sufficient to protect the driving circuit layer 200 and assist in the formation of the subsequent fluid microchannel 700 .

[0081] S220 , curing the functional protection material film to form a functional protection layer 400 including a plurality of openings 410 , wherein one opening 410 corresponds to one of the first areas A.

[0082] In some embodiments, step S220 removes the solvent in the functional protection material film to form the functional protection layer 400 .

[0083] In some embodiments, the opening 410 may overlap with the first area A in a top view of the display panel 100 , and the area of ​​the opening 410 may be larger than and include the first area A.

[0084] In some embodiments, the first region A includes multiple light-emitting regions, one of the light-emitting regions corresponds to a light-emitting unit 300 of a subsequent process, and the distance between the edge of the protective material film close to any one side of the first region A and the corresponding light-emitting region is 10um to 500um.

[0085] The distance between the edge of the functional protection layer 400 close to any one of the openings 410 and the light-emitting unit 300 in the corresponding opening 410 is the leveling distance of the shading material film 501. This distance should not be too large, as it will result in excessive material usage of the shading material film 501 and even fail to flow between two adjacent light-emitting units 300.

[0086] S300, forming at least two light emitting units 300 spaced apart from the functional protection layer 400 in the opening 410, and a gap 600 between the opening 410 and two adjacent light emitting units 300 to form a fluid microchannel 700, see Figure 8C , Fig. 9 .

[0087] In some embodiments, step S300 includes:

[0088] S310 , forming at least two light emitting units 300 spaced apart from the functional protection layer 400 in the opening 410 .

[0089] In some embodiments, the light emitting unit 300 may be formed in step S310 by die bonding or anisotropic conductive adhesive film.

[0090] In some embodiments, the distance between two adjacent light-emitting units 300 in the same opening 410 is 50um to 80um. The distance between two adjacent light-emitting units 300 in the same opening 410 may have a capillary effect, and the distance should not be too small. If it is too small, it may easily lead to the need for overly high-precision coating, or even insufficient coating precision or poor control of the amount of coating material, causing the light-shielding material film 501 to climb too high, or even cover the top of the light-emitting unit 300, affecting normal display.

[0091] S320, the opening 410 and the gap 600 between two adjacent light emitting units 300 form a fluid microchannel 700, see Figure 8C , Fig. 9 .

[0092] The opening 410 and the gap 600 between the two adjacent light-emitting units 300 form a fluid microchannel 700 accordingly. When the shading material film 501 is coated, the functional protection layer 400 protects the driving circuit layer 200. At the same time, the step difference between the functional protection layer 400 and the film layer in the opening 410 and the leveling driving force of the fluid can guide the shading material film 501 into the opening 410 to the vicinity of the light-emitting unit 300; the gap 600 between the two adjacent light-emitting units 300 can produce a capillary action to attract the shading material film 501 to the top of the light-emitting unit 300, so that the shading material film 501 extends and flows to the top of the light-emitting unit 300 to cover the side wall of the light-emitting unit 300, thereby avoiding the optical crosstalk problem between the two adjacent light-emitting units 300 and protecting the driving circuit layer 200, thereby improving the yield of the display panel 100.

[0093] S400, coating a light shielding material film 501 on the functional protection layer 400 and close to the corresponding opening 410, and using the fluid microchannel 700, allowing the light shielding material film 501 to flow and extend toward the gap 600 between the two adjacent light emitting units 300 and toward the top of the light emitting unit 300 to form a light shielding layer 500, see Fig.8D , Fig.10 .

[0094] In some embodiments, step S400 includes:

[0095] S410, coating a shading material film 501 on the functional protection layer 400 and close to the corresponding opening 410, and using the fluid microchannel 700 to allow the shading material film 501 to flow and extend toward the gap 600 between the two adjacent light-emitting units 300 and toward the top of the light-emitting unit 300 within a first time period.

[0096] In some embodiments, the first time period is 30s to 300s. The leveling and ramping time need to be controlled. If the time is too long, the ramping will be too high, affecting normal display; if the time is too short, the ramping height will be insufficient, and the light crosstalk protection effect will be weakened.

[0097] In some embodiments, the viscosity of the light shielding material film 501 is lower than that of the functional protection material film, which is beneficial to the leveling and climbing of the light shielding material film 501, shortening the leveling and climbing time and improving production efficiency.

[0098] In some embodiments, the light shielding material film 501 of step S410 can be coated multiple times, for example, twice or three times, etc. Coating multiple times can facilitate leveling and climbing or better control of film thickness, etc. In the curing stage, curing can be performed separately or uniformly.

[0099] In some embodiments, the total thickness of the shading material film 501 is 10um to 100um, and the coating thickness of the shading material film 501 is greater than the coating thickness of the functional protection material film, which is beneficial to the leveling and climbing of the shading material film 501.

[0100] S420 , curing the light-shielding material film 501 to form a light-shielding layer 500 .

[0101] In some embodiments, the curing method of the shading material film 501 is similar to the terminal curing method of the functional protection material. Here, the curing method of the shading material film 501 is taken as an example. The curing method of the shading material film 501 can be UV curing or thermal curing.

[0102] In some embodiments, the curing method of the light shielding material film 501 is ultraviolet curing, and step S420 may include:

[0103] S421a , using ultraviolet light to cure the light-shielding material film 501 with an energy of 500 mJ to 5000 mJ and a time of 10 s to 300 s, so as to form a light-shielding layer 500 .

[0104] In some embodiments, the curing method of the light shielding material film 501 is thermal curing, and step S420 may include:

[0105] S421b, thermally curing the light-shielding material film 501 at a temperature of 100° C. to 150° C. for 30 min to 60 min to form a light-shielding layer 500 .

[0106] In some embodiments, three light-emitting units 300 are disposed in any one of the openings 410 , and the display colors corresponding to the three light-emitting units 300 are red, green, and blue, respectively.

[0107] See also Figure 1 , Figure 2 For the convenience of description, the light-emitting unit 300 corresponding to the red color is a red unit R, the light-emitting unit 300 corresponding to the green color is a green unit G, and the light-emitting unit 300 corresponding to the blue color is a blue unit B. A red unit R, a green unit G, and a blue unit B constitute a pixel, and the distance between two adjacent pixels is greater than the distance between two adjacent light-emitting units 300 in the same pixel.

[0108] One opening 410 corresponds to one pixel, which facilitates the relative independence of the pixels and also facilitates coating of the light shielding material film 501 to form the light shielding layer 500 .

[0109] The opening 410 and the gap 600 between the two adjacent light-emitting units 300 form a fluid microchannel 700 accordingly. When the shading material film 501 is coated, the functional protection layer 400 protects the driving circuit layer 200. At the same time, the step difference between the functional protection layer 400 and the film layer in the opening 410 and the leveling driving force of the fluid can guide the shading material film 501 into the opening 410 to the vicinity of the light-emitting unit 300; the gap 600 between the two adjacent light-emitting units 300 can produce a capillary action to attract the shading material film 501 to the top of the light-emitting unit 300, so that the shading material film 501 extends and flows to the top of the light-emitting unit 300 to cover the side wall of the light-emitting unit 300, thereby avoiding the optical crosstalk problem between the two adjacent light-emitting units 300 and protecting the driving circuit layer 200, thereby improving the yield of the display panel 100.

[0110] The present invention forms a functional protection layer including a plurality of openings on a driving circuit layer, and at least two light-emitting units are arranged in the openings. A fluid microchannel is formed corresponding to the opening and the gap between two adjacent light-emitting units. When a light-shielding material film is coated, the light-shielding material film is guided toward the light-emitting unit by utilizing the fluid microchannel, and the light-shielding material film is extended and flowed toward the top of the light-emitting unit by utilizing the capillary action of the gap between the light-emitting units to cover the side wall of the light-emitting unit. This avoids the problem of optical crosstalk between two adjacent light-emitting units, protects the driving circuit layer, and improves the yield of the display panel.

[0111] See also Fig.11 An embodiment of the present invention further provides a display device 10, comprising a display panel 100 as described above and a device body 20, wherein the device body 20 and the display panel 100 are combined into one body; wherein the display panel 100 is any of the display panels 100 described above or is manufactured by any of the manufacturing methods of the display panels 100 described above.

[0112] The specific structure of the display panel 100 may be referred to any of the above embodiments and drawings of the display panel 100 , and will not be described in detail herein.

[0113] In this embodiment, the device body 20 may include a middle frame, frame glue, etc., and the display device 10 may be a display terminal such as a television, a mobile phone, a tablet, etc., which is not limited here.

[0114] The embodiment of the present invention discloses a display panel and a manufacturing method thereof, and a display device; the display panel includes a driving circuit layer, a plurality of light-emitting units located on the driving circuit layer, a functional protection layer arranged at intervals from each of the light-emitting units, and a light-shielding layer, the functional protection layer includes a plurality of openings, at least two of the light-emitting units are arranged in any of the openings, and the light-shielding layer is at least arranged in each of the openings and located between each of the light-emitting units; the present invention forms a functional protection layer including a plurality of openings on the driving circuit layer, and a fluid microchannel is formed corresponding to the opening and the gap between two adjacent light-emitting units. When applying a light-shielding material film, the fluid microchannel is used to guide the light-shielding material film to the light-emitting unit, and the capillary action of the gap between the light-emitting units is used to make the light-shielding material film extend and flow toward the top of the light-emitting unit to cover the side wall of the light-emitting unit, thereby avoiding the problem of optical crosstalk between two adjacent light-emitting units and protecting the driving circuit layer.

[0115] The above is a detailed introduction to a display panel and a manufacturing method thereof, and a display device provided in an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A display panel, characterized in that: include: Driving circuit layer; A plurality of light-emitting units are located on the driving circuit layer and are electrically connected to the driving circuit layer; a functional protection layer, located on the driving circuit layer and spaced apart from each of the light-emitting units, the functional protection layer comprising a plurality of openings, and at least two of the light-emitting units are disposed in any of the openings; A light shielding layer, at least disposed in each of the openings and located between each of the light emitting units; The thickness of the light shielding layer between the light emitting unit and the corresponding functional protection layer is greater than the thickness of the corresponding functional protection layer, and the height of the light shielding layer is less than the height of the light emitting unit.

2. The display panel according to claim 1, characterized in that: Three light-emitting units are arranged in any one of the openings, and the display colors corresponding to the three light-emitting units are red, green and blue respectively.

3. The display panel according to claim 2, characterized in that: The light shielding layer is overlapped on the functional protection layer.

4. The display panel according to claim 2, characterized in that: The functional protection layer includes a plurality of protection units arranged at intervals, and any of the protection units includes an opening.

5. The display panel according to claim 2, characterized in that: The distance between the surface of the light shielding layer away from the driving circuit layer and the driving circuit layer is less than or equal to the distance between the surface of the corresponding light emitting unit away from the driving circuit layer and the driving circuit layer.

6. The display panel according to claim 2, characterized in that: The distance between the edge of the functional protection layer close to one side of any one of the openings and the light-emitting unit in the corresponding opening is 10 um to 500 um; The distance between two adjacent light emitting units in the same opening is 50 um to 80 um.

7. A method for manufacturing a display panel, characterized in that: include: Forming a driving circuit layer including a plurality of first regions and a second region on a substrate, wherein the second regions are arranged around each of the first regions; forming a functional protection layer including a plurality of openings in the second area on the driving circuit layer, wherein one of the openings corresponds to one of the first areas; At least two light-emitting units are formed in the opening and spaced apart from the functional protection layer, and a fluid microchannel is formed between the opening and a gap between two adjacent light-emitting units; A light-shielding material film is coated on the functional protective layer and close to the corresponding opening, and the fluid microchannel is used to make the light-shielding material film flow and extend toward the gap between the two adjacent light-emitting units and toward the top of the light-emitting unit to form a light-shielding layer; wherein the thickness of the light-shielding layer between the light-emitting unit and the corresponding functional protective layer is greater than the thickness of the corresponding functional protective layer, and the height of the light-shielding layer is less than the height of the light-emitting unit.

8. The method for manufacturing a display panel according to claim 7, characterized in that: The step of coating a light-shielding material film on the functional protection layer and close to the corresponding opening, and using the fluid microchannel to make the light-shielding material film flow and extend toward the gap between the corresponding two adjacent light-emitting units and toward the top of the light-emitting unit to form a light-shielding layer comprises: A light-shielding material film is coated on the functional protection layer and close to the corresponding opening, and the light-shielding material film is made to flow and extend toward the gap between the corresponding two adjacent light-emitting units and toward the top of the light-emitting unit during a first time period by using the fluid microchannel to form a light-shielding layer; The first time period is from 30s to 300s.

9. A display device, characterized in that: It comprises a display panel and a device body, wherein the device body and the display panel are integrated into one body; Wherein, the display panel is the display panel according to any one of claims 1 to 6 or is manufactured by the method for manufacturing a display panel according to claim 7 or 8.

Images