WO2023097718A1 - 显示面板及其制作方法、显示装置 - Google Patents

显示面板及其制作方法、显示装置 Download PDF

Info

Publication number
WO2023097718A1
WO2023097718A1 PCT/CN2021/136495 CN2021136495W WO2023097718A1 WO 2023097718 A1 WO2023097718 A1 WO 2023097718A1 CN 2021136495 W CN2021136495 W CN 2021136495W WO 2023097718 A1 WO2023097718 A1 WO 2023097718A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
carbon black
shielding
black particles
display panel
Prior art date
Application number
PCT/CN2021/136495
Other languages
English (en)
French (fr)
Inventor
周菁
Original Assignee
武汉华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US17/617,925 priority Critical patent/US20240010842A1/en
Publication of WO2023097718A1 publication Critical patent/WO2023097718A1/zh

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/56—Treatment of carbon black ; Purification
    • C09C1/565—Treatment of carbon black ; Purification comprising an oxidative treatment with oxygen, ozone or oxygenated compounds, e.g. when such treatment occurs in a region of the furnace next to the carbon black generating reaction zone
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/003—Light absorbing elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C2220/00—Methods of preparing the interference pigments
    • C09C2220/10—Wet methods, e.g. co-precipitation
    • C09C2220/106—Wet methods, e.g. co-precipitation comprising only a drying or calcination step of the finally coated pigment
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds

Definitions

  • the present application relates to the display field, and in particular to a display panel, a manufacturing method thereof, and a display device.
  • the POL-less technology that replaces the polarizer (POL) with a color filter (Color Filter) can not only effectively reduce the thickness of the functional layer, but also increase the light extraction rate.
  • the color The photoresist material and process requirements of film technology are relatively high, and it is necessary to control the temperature throughout the process to avoid high temperature. Therefore, when making the light-shielding component in the color film, it is easy to have abnormal accumulation of light-shielding materials, forming in the area where the light-shielding material is not installed. Shading black spots affect the display luminous performance of the display panel.
  • the present application provides a display panel, a manufacturing method thereof, and a display device, which can alleviate the current technical problems that light-shielding materials tend to gather abnormally and form light-shielding black spots in areas where the light-shielding materials are not provided.
  • An embodiment of the present application provides a display panel, including:
  • a light-emitting functional layer including a plurality of light-emitting units
  • the color filter layer is located on the light-emitting functional layer.
  • the color filter layer includes a color color resistance corresponding to the light-emitting unit and a light-shielding unit located between two adjacent color color resistances.
  • the light-shielding unit includes A light-shielding material, the light-shielding material includes a light-shielding component, the light-shielding component includes a plurality of carbon black particles, and at least one functional group on the surface of the carbon black particles, the functional group is an acidic functional group or capture free radical groups;
  • the acidic functional group is any one of carboxyl, hydroxyl, and carbonyl
  • the free radical-capturing group is a ketone group
  • any one of the functional groups is attached to a biphenyl ring on the surface of the carbon black particle.
  • At most one functional group is connected to one benzene ring.
  • the functional group is located near the edge of the biphenyl ring.
  • At least 3 carbon atoms are connected between two adjacent functional groups.
  • the shading material further includes a carrier component, a functional solvent, and a stabilizer; wherein, the shading component accounts for 1% to 10% by mass of the shading material, and the carrier component accounts for the
  • the mass fraction of the light-shielding material is 5% to 15%
  • the mass fraction of the functional solvent in the light-shielding material is 70% to 90%
  • the mass fraction of the stabilizer in the light-shielding material is 1% to 5%.
  • the particle diameter of the carbon black particles is 100nm to 150nm.
  • the embodiment of the present application also provides a method for manufacturing a display panel, including:
  • the oxidizing solution is a mixture of any one or more of nitric acid, hydrogen peroxide solution, saturated ammonium persulfate solution, perchloric acid, hypochlorous acid, isocyanate solution, and potassium permanganate solution.
  • the step of mixing the carbon black particles with the oxidizing solution to form at least one functional group on the surface of the carbon black particles includes: mixing the carbon black particles with the oxidizing solution to form a first a mixture; the first mixture is ultrasonically treated and stirred to form at least one functional group on the surface of the carbon black particles.
  • the step of mixing the carbon black particles with the oxidizing solution to form at least one functional group on the surface of the carbon black particles to form a light-shielding component includes: mixing the carbon black particles with the oxidizing solution mixing to form a first mixture; the first mixture is ultrasonically treated and stirred to form at least one functional group on the surface of the carbon black particles; the first mixture is vacuum-dried; the carbon The black particles are mixed with carrier components, functional solvents, and stabilizers to form a light-shielding material.
  • the step of forming a plurality of light-shielding units including the light-shielding component on the light-emitting functional layer and the color color resistance between two adjacent light-shielding units includes: using the light-shielding component, The light-shielding material of the carrier component, the functional solvent, and the stabilizer forms a plurality of light-shielding units on the light-emitting functional layer; and forms color resistance between two adjacent light-shielding units.
  • the mass fraction of the shading component in the shading material is 1% to 10%
  • the mass fraction of the carrier component in the shading material is 5% to 15%
  • the functional solvent accounts for the
  • the mass fraction of the light-shielding material is 70% to 90%
  • the mass fraction of the stabilizer in the light-shielding material is 1% to 5%.
  • the step of providing a plurality of carbon black particles includes: cleaning the carbon black particles with deionized water, acetone, alcohol, and distilled water in sequence to obtain a first suspension; Washing; filtering and drying the first suspension.
  • the embodiment of the present application also provides a display device, including a display panel and a device main body, the display panel and the device main body are combined into one, and the display panel includes:
  • a light-emitting functional layer including a plurality of light-emitting units
  • the color filter layer is located on the light-emitting functional layer.
  • the color filter layer includes a color color resistance corresponding to the light-emitting unit and a light-shielding unit located between two adjacent color color resistances.
  • the light-shielding unit includes A light-shielding material, the light-shielding material includes a light-shielding component, the light-shielding component includes a plurality of carbon black particles, and at least one functional group on the surface of the carbon black particles, the functional group is an acidic functional group or capture free radical groups;
  • the acidic functional group is any one of carboxyl, hydroxyl, and carbonyl
  • the free radical-capturing group is a ketone group
  • any one of the functional groups is attached to a biphenyl ring on the surface of the carbon black particle.
  • At most one functional group is connected to one benzene ring.
  • the functional group is located near the edge of the biphenyl ring.
  • At least 3 carbon atoms are connected between two adjacent functional groups.
  • the shading material further includes a carrier component, a functional solvent, and a stabilizer; wherein, the shading component accounts for 1% to 10% by mass of the shading material, and the carrier component accounts for the
  • the mass fraction of the light-shielding material is 5% to 15%
  • the mass fraction of the functional solvent in the light-shielding material is 70% to 90%
  • the mass fraction of the stabilizer in the light-shielding material is 1% to 5%.
  • the particle diameter of the carbon black particles is 100nm to 150nm.
  • This application modifies oxygen-containing groups on the surface of carbon black particles, generates acidic functional groups and captures free radical groups on the surface, increases the surface activity and surface polarization of carbon black particles, and reduces the agglomeration tendency of carbon black particles , thereby improving the dispersibility of the carbon black particles, improving the dissolution reaction of the developer to the black spots of the aggregated carbon black particles, avoiding the generation of black spots, and improving the display luminous performance of the display panel.
  • Fig. 1 is an enlarged view of black spots formed in areas where no light-shielding material is provided in the prior art
  • Figure 2 and Figure 3 are the energy spectrum scanning results for shading black spots
  • Fig. 4 is the particle size distribution of carbon black in liquid glue BM
  • FIG. 5 is a schematic structural diagram of a display panel provided by an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a light-shielding component in a display panel provided by an embodiment of the present application
  • FIG. 7 is a flow chart of the steps of the manufacturing method of the display panel provided by the embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a display device provided by an embodiment of the present application.
  • the present application provides a display panel, a manufacturing method thereof, and a display device.
  • a display panel a manufacturing method thereof, and a display device.
  • the present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.
  • Embodiments of the present application provide a display panel, a manufacturing method thereof, and a display device. Each will be described in detail below. It should be noted that the description sequence of the following embodiments is not intended to limit the preferred sequence of the embodiments.
  • the embodiment of the present application provides a display panel 100, including:
  • a light-emitting functional layer 200 including a plurality of light-emitting units 210;
  • the color filter layer 300 is located on the light-emitting functional layer 200, and the color filter layer 300 includes a color color resistance 310 corresponding to the light-emitting unit 210 and a light-shielding unit located between two adjacent color color resistances 310 320, the shading unit 320 includes a shading material, the shading material includes a shading component 10, the shading component 10 includes a plurality of carbon black particles 20, and at least one functional group on the surface of the carbon black particles 20 Group 30, the functional group 30 is an acidic functional group 31 or a free radical capture group 32;
  • the acidic functional group 31 is any one of carboxyl, hydroxyl and carbonyl
  • the free radical capturing group 32 is a ketone group.
  • This application modifies oxygen-containing groups on the surface of carbon black particles, generates acidic functional groups and captures free radical groups on the surface, increases the surface activity and surface polarization of carbon black particles, and reduces the agglomeration tendency of carbon black particles , thereby improving the dispersibility of the carbon black particles, improving the dissolution reaction of the developer to the black spots of the aggregated carbon black particles, avoiding the generation of black spots, and improving the display luminous performance of the display panel.
  • the display panel 100 includes a light-emitting functional layer 200 and a color filter layer 300 located on the light-emitting functional layer 200 , and the color filter layer 300 includes a corresponding light-emitting unit 210 The color resists 310 and the light shielding unit 320 located between two adjacent color resists 310 .
  • the color color resistance 310 is any one of red color resistance r, green color resistance g, and blue color resistance b.
  • the light-emitting functional layer 200 includes a plurality of light-emitting units 210, and the color of the light-emitting units 210 is any one of red unit R, green unit G, and blue unit B,
  • the color of the color resist 310 corresponds to the color of the light emitting unit 210 .
  • the light-shielding unit 320 includes a light-shielding material, and the light-shielding material includes a light-shielding component 10, and the light-shielding component 10 includes a plurality of carbon black particles 20, and is located on the surface of the carbon black particles 20.
  • the functional group 30 is an acidic functional group 31 or a capture free radical group 32; wherein, the acidic functional group 31 is any one of carboxyl, hydroxyl, or carbonyl, and the capture Radical group 32 is a keto group.
  • the color filter layer please refer to Figure 1 to Figure 3, it will include the production of light-shielding material (BM).
  • BM light-shielding material
  • the area of the small black dot is below 10 ⁇ m 2
  • the FIB section test is performed on the area of the small black dot
  • O content: 2.8% in the small black dot area, Si content: 50.5%; C content: 38.5%; N content: 8.2%; O content: 2.8%.
  • the main component of the small black spots is C, which shows that the small black spots are mainly the aggregation products of C.
  • the increase of the acidic functional group 31 improves the solubility of the developer to the carbon black; in addition, the functional group on the surface to capture free radicals increases.
  • the ability of this structured group is the same as that of the polymerization inhibitor, which can improve the material stability, the surface activity and surface polarization of carbon black increase, the agglomeration tendency of carbon black decreases, the aggregation of carbon black particles 20 is inhibited, the dispersibility of carbon black particles 20 is improved, black spots are avoided, and the display panel is improved. 100's display luminous performance.
  • the surface of the carbon black particle 20 includes biphenyl rings, and any one of the functional groups 30 is connected to the biphenyl rings on the surface of the carbon black particle 20 .
  • At most one functional group 30 is connected to one benzene ring.
  • a benzene ring is connected with at most one functional group 30, which can ensure that the functional group 30 can be relatively dispersed, so as to uniformly improve the dispersibility of the carbon black particles 20, and at the same time modify one functional group on a benzene ring.
  • the group 30 can also prevent multiple functional groups 30 from interacting with each other on a benzene ring, making the addition and modification process easier and avoiding the production of other interaction products.
  • the light-shielding component 10 includes a plurality of functional groups, and in one functional group, two adjacent functional groups 30 are respectively located in two adjacent benzene rings. Above, two adjacent functional group groups are arranged at intervals.
  • the benzene rings corresponding to the functional group 30 are arranged continuously, and two adjacent functional groups are separated, so that different regions of the carbon black particle 20 can be processed. grooming.
  • the functional groups are evenly distributed.
  • the uniform distribution of the functional groups arranged at intervals improves the performance uniformity of the carbon black particles 20 , improves the dispersibility of the carbon black particles 20 , avoids the generation of black spots, and improves the display luminous performance of the display panel 100 .
  • the functional group 30 is located near the edge of the biphenyl ring.
  • the modification of the functional group 30 is carried out on the side of the edge of the biphenyl ring, and the functional group 30 is more easily modified at the end, which is easier to improve the dispersibility of the carbon black particles 20 and avoid black spots. Therefore, the display luminous performance of the display panel 100 is improved.
  • At least 3 carbon atoms are connected between two adjacent functional groups 30 .
  • the two adjacent functional groups can be arranged on two adjacent benzene rings, even if the two functional groups 30 are connected to the same benzene ring, there are at least 3 carbon atoms in the middle, which is set in the meta position, and can be Ensure that the functional groups 30 can be relatively dispersed to uniformly improve the dispersibility of the carbon black particles 20, while modifying one functional group 30 on a benzene ring can also avoid multiple functional groups 30 Interacting on a benzene ring makes it easier to add modification and avoid producing other interaction products.
  • the shading material further includes a carrier component, a functional solvent, and a stabilizer; wherein, the shading component 10 accounts for 1% to 10% of the mass fraction of the shading material, and the carrier component
  • the mass fraction of the light-shielding material is 5% to 15%
  • the mass fraction of the functional solvent is 70% to 90% of the light-shielding material
  • the stabilizer is 1% of the mass fraction of the light-shielding material to 5%.
  • the carrier component is an acrylic system, which may be an acrylic resin, which is the main component of the light-shielding material and plays a role of supporting other components.
  • the functional solvent includes a photoresist solvent and a general-purpose solvent
  • the photoresist solvent accounts for 40% to 50% of the mass fraction of the light-shielding material
  • the general-purpose solvent accounts for 40% to 50% of the mass fraction of the light-shielding material. 30% to 40%.
  • the photoresist solvent is propylene glycol methyl ether acetate (PGMEA), the molecular formula is C 6 H 12 O 3 , a colorless hygroscopic liquid with a special smell, and it is a non-pollution solvent with multiple functional groups.
  • PGMEA propylene glycol methyl ether acetate
  • the molecular formula is C 6 H 12 O 3
  • a colorless hygroscopic liquid with a special smell and it is a non-pollution solvent with multiple functional groups.
  • the universal solvent is cyclohexanone.
  • the stabilizer is dimethyl succinate.
  • the optical density (OD) value of the light-shielding material is greater than 2/ ⁇ m, and the refractive index of the light-shielding material is 1.2 to 1.8, so as to match the refractive index of the transparent photoresist layer 104 in the display panel 100, displaying
  • the refractive index of the transparent photoresist layer 104 in the panel 100 is about 1.4, so as to prevent the difference between the refractive indices of the two materials from being too large, increase the reflectivity, and affect the display effect.
  • the particle size of the carbon black particles 20 is 100 nm to 150 nm.
  • the carbon black particle 20 is controlled within this range, on the one hand, the uniformity is improved, and the light-shielding performance is improved; It is also easier to improve the dispersibility of the carbon black particles 20 , reduce the aggregation of carbon black particles, avoid the occurrence of black spots, and improve the display luminous performance of the display panel 100 .
  • the display panel 100 further includes an array substrate 101 located on a side of the light-emitting functional layer 200 away from the color filter layer 300 .
  • the array substrate 101 includes a substrate, an active layer on the substrate, a gate insulating layer on the active layer, and a gate on the gate insulating layer. layer, an interlayer insulating layer on the gate layer, and a source-drain layer on the gate insulating layer.
  • the light-emitting functional layer 200 includes an inter-insulating layer on the array substrate 101, an anode layer on the inter-insulation layer, a luminescent material layer on the anode layer, and an anode layer on the anode layer.
  • the anode layer is electrically connected to the source-drain layer through via holes.
  • the display panel 100 further includes an encapsulation layer 102 located between the light-emitting functional layer 200 and the color filter layer 300 , and a touch layer located on the encapsulation layer 102 103.
  • the touch control layer 103 is located between the color filter layer 300 and the encapsulation layer 102 .
  • the display panel 100 further includes a transparent photoresist layer 104 on the color filter layer 300 , an adhesive layer 105 on the transparent photoresist layer 104 , and a The cover plate 106 on the adhesive layer 105 .
  • the optical density (OD) value of the light-shielding material is greater than 2/ ⁇ m, and the refractive index of the light-shielding material is 1.2 to 1.8, so as to match the refractive index of the transparent photoresist layer 104 in the display panel 100, displaying
  • the refractive index of the transparent photoresist layer 104 in the panel 100 is about 1.4, so as to prevent the difference between the refractive indices of the two materials from being too large, increase the reflectivity, and affect the display effect.
  • both the color resist 310 and the transparent photoresist layer 104 are low-temperature photoresist materials, and the process temperature thereof is not higher than 90° C.
  • the transparent photoresist layer 104 is used as a flat layer, the thickness of the transparent photoresist layer 104 is 380 nm to 780 nm, and the transmittance of the transparent photoresist layer 104 is ⁇ 90%.
  • the embodiment of the present application also provides a method for manufacturing a display panel, including:
  • the oxidizing solution is a mixture of any one or more of nitric acid, hydrogen peroxide solution, saturated ammonium persulfate solution, perchloric acid, hypochlorous acid, isocyanate solution, and potassium permanganate solution.
  • This application modifies oxygen-containing groups on the surface of carbon black particles, generates acidic functional groups and captures free radical groups on the surface, increases the surface activity and surface polarization of carbon black particles, and reduces the agglomeration tendency of carbon black particles , thereby improving the dispersibility of the carbon black particles, improving the dissolution reaction of the developer to the black spots of the aggregated carbon black particles, avoiding the generation of black spots, and improving the display luminous performance of the display panel.
  • the manufacturing method of the display panel includes:
  • step S100 includes:
  • the cleaning time of each type in step S110 is 15 minutes to 30 minutes.
  • the carbon black particles 20 treated in steps S110, S120, and S130 can improve the dispersibility of the carbon black particles 20 themselves, wherein, the cleaning in step S110 can remove excess impurities and improve the carbon black particles 20.
  • the dispersibility of the carbon black particles 20, the ultrasonic cleaning in step S120, and the ultrasonic vibration can improve the further dispersion of the aggregated carbon black particles 20.
  • the filtering in step S130 is performed using a filter element with a filter diameter of 0.3 ⁇ m.
  • the particle size of the carbon black particles 20 is 100 nm to 150 nm.
  • the carbon black particle 20 is controlled within this range, on the one hand, the uniformity is improved, and the light-shielding performance is improved; It is also easier to improve the dispersibility of the carbon black particles 20 , reduce the aggregation of carbon black particles, avoid the occurrence of black spots, and improve the display luminous performance of the display panel 100 .
  • the oxidizing solution is any one or more of nitric acid, hydrogen peroxide solution, saturated ammonium persulfate solution, perchloric acid, hypochlorous acid, isocyanate solution, potassium permanganate solution the mix of.
  • the strong oxidizing oxidizing solution can modify the surface of the carbon black particles 20 with acidic functional groups 31 or radical-capturing groups 32 .
  • step S200 includes:
  • the time of ultrasonic treatment in step S220 is more than 3 hours, so that the first mixture can fully react and the carbon black particles 20 can be fully dispersed.
  • the time of stirring in step S220 is more than 20 hours, so that the first mixture can fully react and the carbon black particles 20 can be fully dispersed.
  • the temperature in step S230 is 80°C to 120°C.
  • the surface of the carbon black particle 20 includes biphenyl rings, and any one of the functional groups 30 is connected to the biphenyl rings on the surface of the carbon black particle 20 .
  • At most one functional group 30 is connected to one benzene ring.
  • a benzene ring is connected with at most one functional group 30, which can ensure that the functional group 30 can be relatively dispersed, so as to uniformly improve the dispersibility of the carbon black particles 20, and at the same time modify one functional group on a benzene ring.
  • the group 30 can also prevent multiple functional groups 30 from interacting with each other on a benzene ring, making the addition and modification process easier and avoiding the production of other interaction products.
  • the light-shielding component 10 includes a plurality of functional groups, and in one functional group, two adjacent functional groups 30 are respectively located in two adjacent benzene rings. Above, two adjacent functional group groups are arranged at intervals.
  • the functional groups are evenly distributed.
  • the uniform distribution of the functional groups arranged at intervals improves the performance uniformity of the carbon black particles 20 , improves the dispersibility of the carbon black particles 20 , avoids the generation of black spots, and improves the display luminous performance of the display panel 100 .
  • the functional group 30 is located near the edge of the biphenyl ring.
  • At least 3 carbon atoms are connected between two adjacent functional groups 30 .
  • the step S200 also includes:
  • the shading material further includes a carrier component, a functional solvent, and a stabilizer; wherein, the shading component 10 accounts for 1% to 10% of the mass fraction of the shading material, and the carrier component
  • the mass fraction of the light-shielding material is 5% to 15%
  • the mass fraction of the functional solvent is 70% to 90% of the light-shielding material
  • the stabilizer is 1% of the mass fraction of the light-shielding material to 5%.
  • the carrier component is an acrylic system, which may be an acrylic resin, which is the main component of the light-shielding material and plays a role of supporting other components.
  • the functional solvent includes a photoresist solvent and a general-purpose solvent
  • the photoresist solvent accounts for 40% to 50% of the mass fraction of the light-shielding material
  • the general-purpose solvent accounts for 40% to 50% of the mass fraction of the light-shielding material. 30% to 40%.
  • the photoresist solvent is propylene glycol methyl ether acetate (PGMEA), the molecular formula is C 6 H 12 O 3 , a colorless hygroscopic liquid with a special smell, and it is a non-pollution solvent with multiple functional groups.
  • PGMEA propylene glycol methyl ether acetate
  • the molecular formula is C 6 H 12 O 3
  • a colorless hygroscopic liquid with a special smell and it is a non-pollution solvent with multiple functional groups.
  • the universal solvent is cyclohexanone.
  • the stabilizer is dimethyl succinate.
  • step S300 includes:
  • the light-emitting functional layer 200 includes a plurality of light-emitting units 210, and the color of the light-emitting units 210 is any one of red unit R, green unit G, and blue unit B,
  • the color of the color resist 310 corresponds to the color of the light emitting unit 210 .
  • This application modifies oxygen-containing groups on the surface of carbon black particles, generates acidic functional groups and captures free radical groups on the surface, increases the surface activity and surface polarization of carbon black particles, and reduces the agglomeration tendency of carbon black particles , thereby improving the dispersibility of the carbon black particles, improving the dissolution reaction of the developer to the black spots of the aggregated carbon black particles, avoiding the generation of black spots, and improving the display luminous performance of the display panel.
  • the embodiment of the present application also provides a display device 1 , such as any one of the above-mentioned display panel 100 and the device main body 2 , the device main body 2 is combined with the display panel 100 as one.
  • a display device 1 such as any one of the above-mentioned display panel 100 and the device main body 2 , the device main body 2 is combined with the display panel 100 as one.
  • the device body 2 may include a middle frame, a frame glue, etc.
  • the display device 1 may be a mobile display terminal such as a mobile phone or a tablet, which is not limited here.
  • This application modifies oxygen-containing groups on the surface of carbon black particles, generates acidic functional groups and captures free radical groups on the surface, increases the surface activity and surface polarization of carbon black particles, and reduces the agglomeration tendency of carbon black particles , thereby improving the dispersibility of the carbon black particles, improving the dissolution reaction of the developer to the black spots of the aggregated carbon black particles, avoiding the generation of black spots, and improving the display luminous performance of the display panel.
  • the embodiment of the present application discloses a display panel, a manufacturing method thereof, and a display device;
  • the display panel includes a light-emitting functional layer and a color filter layer located on the light-emitting functional layer,
  • the color filter layer includes a light-shielding unit,
  • the light-shielding unit includes a light-shielding material, and the light-shielding material
  • a shading component includes a plurality of carbon black particles, and at least one functional group on the surface of the carbon black particles, the functional group is an acidic functional group or a free radical capture group, and the acidic functional group is a carboxyl group Any one of , hydroxyl, and carbonyl, and the free radical group is a ketone group;
  • this application modifies the oxygen-containing group on the surface of the carbon black particle, generates an acidic functional group on the surface and captures the free radical group, so that the carbon black
  • the surface activity and surface polarization of the particles increase, and the a

Abstract

一种显示面板（100）及其制作方法、显示装置；显示面板（100）包括发光功能层及彩膜层（300），彩膜层（300）包括遮光单元（320），遮光单元（320）中的遮光材料包括遮光组分，遮光组分包括多个炭黑颗粒（20）、位于炭黑颗粒（20）表面上至少一功能基团，功能基团为酸性官能基团（31）或捕捉游离基基团（32），酸性官能基团为羧基、羟基、羰基中任一种，捕捉游离基基团为酮基。

Description

显示面板及其制作方法、显示装置 技术领域
本申请涉及显示领域，尤其涉及一种显示面板及其制作方法、显示装置。
 背景技术
近些年，使用彩膜（Color Filter）替代偏光片（POL）的POL-less技术，该技术不仅能将功能层的厚度有效减薄，还可以提高出光率，然而，相对于偏光片，彩膜技术的光阻的材料及制程要求较高，需要全程控温，避免出现高温，故在制作彩膜中的遮光组分时，容易出现遮光材料的异常聚集，在非设置遮光材料的区域形成遮光黑点，影响显示面板的显示发光性能。
因此，亟需一种显示面板及其制作方法、显示装置以解决上述技术问题。
 技术问题
本申请提供一种显示面板及其制作方法、显示装置，可以缓解目前遮光材料容易出现异常聚集，在非设置遮光材料的区域形成遮光黑点的技术问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供了一种显示面板，包括：
发光功能层，包括多个发光单元；以及
彩膜层，位于所述发光功能层上，所述彩膜层包括与所述发光单元对应的颜色色阻及位于相邻两个所述颜色色阻之间的遮光单元，所述遮光单元包括遮光材料，所述遮光材料包括遮光组分，所述遮光组分包括多个炭黑颗粒、及位于所述炭黑颗粒的表面上至少一功能基团，所述功能基团为酸性官能基团或捕捉游离基基团；
其中，所述酸性官能基团为羧基、羟基、羰基中任一种，所述捕捉游离基基团为酮基。
优选的，任一所述功能基团连接至所述炭黑颗粒的表面上的联苯环上。
优选的，一个苯环上至多连接一个所述功能基团。
优选的，所述功能基团位于靠近所述联苯环的边缘端一侧。
优选的，相邻两个所述功能基团之间至少连接有3个碳原子。
优选的，所述遮光材料还包括载体组分、功能溶剂、及稳定剂；其中，所述遮光组分占所述遮光材料的质量分数为1%至10%，所述载体组分占所述遮光材料的质量分数为5%至15%，所述功能溶剂占所述遮光材料的质量分数为70%至90%，所述稳定剂占所述遮光材料的质量分数为1%至5%。
优选的，所述炭黑颗粒的粒径为100nm至150nm。
本申请实施例还提供了一种显示面板的制作方法，包括：
提供多个炭黑颗粒；
将所述炭黑颗粒与氧化液混合，在所述炭黑颗粒的表面上形成至少一功能基团，以形成遮光组分；
在发光功能层上形成包括所述遮光组分的多个遮光单元及位于相邻两个所述遮光单元之间的颜色色阻；
其中，所述氧化液为硝酸、过氧化氢溶液、饱和过硫酸铵溶液、高氯酸、次氯酸、异氰酸盐溶液、高锰酸钾溶液中任一种或多种的混合。
优选的，所述将所述炭黑颗粒与氧化液混合，以在所述炭黑颗粒的表面上形成至少一功能基团的步骤包括：将所述炭黑颗粒与氧化液混合，形成第一混合物；将所述第一混合物经超声处理及搅拌处理，以在所述炭黑颗粒的表面上形成至少一功能基团。
优选的，所述将所述炭黑颗粒与氧化液混合，在所述炭黑颗粒的表面上形成至少一功能基团，以形成遮光组分的步骤包括：将所述炭黑颗粒与氧化液混合，形成第一混合物；将所述第一混合物经超声处理及搅拌处理，以在所述炭黑颗粒的表面上形成至少一功能基团；将所述第一混合物真空干燥；将所述炭黑颗粒与载体组分、功能溶剂、及稳定剂混合，形成遮光材料。
优选的，所述在发光功能层上形成包括所述遮光组分的多个遮光单元及位于相邻两个所述遮光单元之间的颜色色阻的步骤包括：利用包括所述遮光组分、所述载体组分、功能溶剂、及稳定剂的所述遮光材料，在发光功能层上形成多个遮光单元；在相邻两个所述遮光单元之间形成颜色色阻。
优选的，所述遮光组分占所述遮光材料的质量分数为1%至10%，所述载体组分占所述遮光材料的质量分数为5%至15%，所述功能溶剂占所述遮光材料的质量分数为70%至90%，所述稳定剂占所述遮光材料的质量分数为1%至5%。
优选的，所述提供多个炭黑颗粒的步骤包括：将炭黑颗粒依次经过去离子水、丙酮、酒精、蒸馏水的清洗，获得第一悬浊液；将所述第一悬浊液用超声波清洗；将所述第一悬浊液过滤烘干。
本申请实施例还提供了一种显示装置，包括显示面板及装置主体，所述显示面板及所述装置主体组合为一体，所述显示面板包括：
发光功能层，包括多个发光单元；以及
彩膜层，位于所述发光功能层上，所述彩膜层包括与所述发光单元对应的颜色色阻及位于相邻两个所述颜色色阻之间的遮光单元，所述遮光单元包括遮光材料，所述遮光材料包括遮光组分，所述遮光组分包括多个炭黑颗粒、及位于所述炭黑颗粒的表面上至少一功能基团，所述功能基团为酸性官能基团或捕捉游离基基团；
其中，所述酸性官能基团为羧基、羟基、羰基中任一种，所述捕捉游离基基团为酮基。
优选的，任一所述功能基团连接至所述炭黑颗粒的表面上的联苯环上。
优选的，一个苯环上至多连接一个所述功能基团。
优选的，所述功能基团位于靠近所述联苯环的边缘端一侧。
优选的，相邻两个所述功能基团之间至少连接有3个碳原子。
优选的，所述遮光材料还包括载体组分、功能溶剂、及稳定剂；其中，所述遮光组分占所述遮光材料的质量分数为1%至10%，所述载体组分占所述遮光材料的质量分数为5%至15%，所述功能溶剂占所述遮光材料的质量分数为70%至90%，所述稳定剂占所述遮光材料的质量分数为1%至5%。
优选的，所述炭黑颗粒的粒径为100nm至150nm。
 有益效果
本申请通过在炭黑颗粒的表面修饰含氧基团，在表面生成酸性官能基团和捕捉游离基基团，使炭黑颗粒的表面活性和表面极化增加，炭黑颗粒的附聚趋势降低，从而提高炭黑颗粒的分散性，提升显影液对已聚集的碳黑颗粒的黑点的溶解反应，避免黑点的产生，提高了显示面板的显示发光性能。
 附图说明
图1是现有技术中非设置遮光材料的区域形成遮光黑点的放大图；
图2、图3是对于遮光黑点的能谱扫描结果；
图4是炭黑在液体胶BM中的粒径分布；
图5是本申请实施例提供的显示面板的结构示意图；
图6是本申请实施例提供的显示面板中的遮光组分的结构示意图；
图7是本申请实施例提供的显示面板的制作方法的步骤流程图；
图8是本申请实施例提供的显示装置的结构示意图。
 本发明的实施方式
本申请提供一种显示面板及其制作方法、显示装置，为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
本申请实施例提供一种显示面板及其制作方法、显示装置。以下分别进行详细说明。需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
请参阅图1至图6，本申请实施例提供了一种显示面板100，包括：
发光功能层200，包括多个发光单元210；以及
彩膜层300，位于所述发光功能层200上，所述彩膜层300包括与所述发光单元210对应的颜色色阻310及位于相邻两个所述颜色色阻310之间的遮光单元320，所述遮光单元320包括遮光材料，所述遮光材料包括遮光组分10，所述遮光组分10包括多个炭黑颗粒20、及位于所述炭黑颗粒20的表面上至少一功能基团30，所述功能基团30为酸性官能基团31或捕捉游离基基团32；
其中，所述酸性官能基团31为羧基、羟基、羰基中任一种，所述捕捉游离基基团32为酮基。
本申请通过在炭黑颗粒的表面修饰含氧基团，在表面生成酸性官能基团和捕捉游离基基团，使炭黑颗粒的表面活性和表面极化增加，炭黑颗粒的附聚趋势降低，从而提高炭黑颗粒的分散性，提升显影液对已聚集的碳黑颗粒的黑点的溶解反应，避免黑点的产生，提高了显示面板的显示发光性能。
现结合具体实施例对本申请的技术方案进行描述。
本实施例中，请参阅图5，所述显示面板100包括发光功能层200及位于所述发光功能层200上的彩膜层300，所述彩膜层300包括与所述发光单元210对应的颜色色阻310及位于相邻两个所述颜色色阻310之间的遮光单元320。
在一些实施例中，请参阅图5，所述颜色色阻310为红色色阻r、绿色色阻g、蓝色色阻b中的任一种。
在一些实施例中，请参阅图5，所述发光功能层200包括多个发光单元210，所述发光单元210的颜色为红色单元R、绿色单元G、蓝色单元B中的任一种，所述颜色色阻310的颜色与所述发光单元210的颜色对应。
在一些实施例中，所述遮光单元320包括遮光材料，所述遮光材料包括遮光组分10，所述遮光组分10包括多个炭黑颗粒20、及位于所述炭黑颗粒20的表面上至少一功能基团30，所述功能基团30为酸性官能基团31或捕捉游离基基团32；其中，所述酸性官能基团31为羧基、羟基、羰基中任一种，所述捕捉游离基基团32为酮基。
在彩膜层中，请参阅图1至图3，会包括遮光材料（BM）的制作，在BM制程过程中，尤其是在控温工艺下，检测到BM孔内容易出现小黑点，请参阅图1，小黑点面积在10μm 2以下，对该小黑点的区域进行FIB切截面测试，请参阅图2、图3，在小黑点区域中，Si含量：50.5%；C含量：38.5%；N含量：8.2%；O含量：2.8%。除开能谱扫描到的Si和N元素（该制程的基底为SiNx），小黑点的主要组成成分为C，可说明小黑点主要是C的聚集产物。
请参阅图4，针对材料中的碳黑成分进行分析，在液体胶BM中的碳黑的颗粒大小及分布，碳黑粒径均集中于106nm至142nm，这与碳黑颗粒原料的粒径相符，无明显的聚集情况，所以判断材料的在液体状态下碳黑分布正常，小黑点的产生出现于制程过程中结合BM材料的遮光组分为炭黑，说明导致材料出现小黑点问题的主要是材料中的碳黑成分聚集导致。
酸性官能基团31增加，提升显影液对炭黑的溶解能力；另外其表面的捕捉游离基的官能基团增加，这种构造的基团的能力与聚合禁止剂的构造效果相同，能够提升材料的稳定性，炭黑的表面活性和表面极化增加，炭黑的附聚趋势降低，抑制炭黑颗粒20的聚集，提高炭黑颗粒20的分散性，避免黑点的产生，提高了显示面板100的显示发光性能。
在一些实施例中，所述炭黑颗粒20的表面包括联苯环，任一所述功能基团30连接至所述炭黑颗粒20的表面上的联苯环上。
联苯环上易于修饰取代基团，可以控制所述功能基团30的修饰比例，调节炭黑颗粒20的聚集程度，提高炭黑颗粒20的分散性，避免黑点的产生，提高了显示面板100的显示发光性能。
在一些实施例中，请参阅图6，一个苯环上至多连接一个所述功能基团30。一个苯环上至多连接一个所述功能基团30，可以保证所述功能基团30可以相对分散，以均匀提高所述炭黑颗粒20的分散性，同时在一个苯环上修饰一个所述功能基团30，也可以避免多个所述功能基团30在一个苯环上相互影响，在添加修饰过程更容易，避免产生其他作用产物。
在一些实施例中，所述遮光组分10包括多个功能组基团，在一个所述功能组基团中，相邻两个所述功能基团30分别位于相邻两个所述苯环上，相邻两个所述功能组基团间隔设置。
在一个所述功能组基团中，所述功能基团30对应的所述苯环连续设置，将相邻两个所述功能组基团间隔，从而可以对所述炭黑颗粒20不同区域进行修饰。
在一些实施例中，所述功能组基团均匀分布。将间隔设置的所述功能组基团均匀分布，提高所述炭黑颗粒20的性能均匀，提高炭黑颗粒20的分散性，避免黑点的产生，提高了显示面板100的显示发光性能。
在一些实施例中，所述功能基团30位于靠近所述联苯环的边缘端一侧。
在所述联苯环的边缘端一侧进行所述功能基团30的修饰，端部更容易被修饰上所述功能基团30，更容易提高炭黑颗粒20的分散性，避免黑点的产生，提高了显示面板100的显示发光性能。
在一些实施例中，相邻两个所述功能基团30之间至少连接有3个碳原子。
相邻两个所述官能基团可以设置在相邻两个苯环上，即使两个所述功能基团30连接在同一苯环上，中间至少间隔3个碳原子，为间位设置，可以保证所述功能基团30可以相对分散，以均匀提高所述炭黑颗粒20的分散性，同时在一个苯环上修饰一个所述功能基团30，也可以避免多个所述功能基团30在一个苯环上相互影响，在添加修饰过程更容易，避免产生其他作用产物。
在一些实施例中，所述遮光材料还包括载体组分、功能溶剂、及稳定剂；其中，所述遮光组分10占所述遮光材料的质量分数为1%至10%，所述载体组分占所述遮光材料的质量分数为5%至15%，所述功能溶剂占所述遮光材料的质量分数为70%至90%，所述稳定剂占所述遮光材料的质量分数为1%至5%。
在一些实施例中，所述载体组分为亚克力体系，可以为丙烯酸树脂，是所述遮光材料的主要组成，起到承载其他组分的作用。
在一些实施例中，所述功能溶剂包括光阻溶剂及通用溶剂，所述光阻溶剂占所述遮光材料的质量分数为40%至50%，所述通用溶剂占所述遮光材料的质量分数为30%至40%。
在一些实施例中，所述光阻溶剂为丙二醇甲醚醋酸酯（PGMEA)，分子式为C 6H 12O 3，无色吸湿液体，有特殊气味，是一种具有多官能团的非公害溶剂，用于光阻溶剂。
在一些实施例中，所述通用溶剂为环己酮。
在一些实施例中，所述稳定剂为琥珀酸二甲酯。
在一些实施例中，所述遮光材料的光密度（OD）值大于2/μm，所述遮光材料折射率为1.2至1.8，以匹配在显示面板100中的透明光阻层104折射率，显示面板100中的透明光阻层104折射率约为1.4，避免两种材料折射率差异过大，避免增加反射率，影响显示效果。
在一些实施例中，所述炭黑颗粒20的粒径为100nm至150nm。将所述炭黑颗粒20控制在该范围内，一方面提高均一性，提高遮光性能，另一方面选取较大颗粒直径的所述炭黑颗粒20，较容易进行集中的集团修饰，大颗粒本身也更容易提高炭黑颗粒20的分散性，减少炭黑乐力聚集，避免黑点的产生，提高了显示面板100的显示发光性能。
在一些实施例中，所述显示面板100还包括位于所述发光功能层200远离所述彩膜层300一侧的阵列基板101。
在一些实施例中，所述阵列基板101包括衬底、位于所述衬底上的有源层、位于所述有源层上的栅极绝缘层、位于所述栅极绝缘层上的栅极层、位于所述栅极层上的层间绝缘层、及位于所述栅极绝缘层上的源漏极层。
在一些实施例中，所述发光功能层200包括位于所述阵列基板101上的间绝缘层、位于所述间绝缘层上的阳极层、位于所述阳极层上的发光材料层、位于所述发光材料层上的阴极层。所述阳极层与所述源漏极层通过过孔电连接。
在一些实施例中，请参阅图5，所述显示面板100还包括位于所述发光功能层200与所述彩膜层300之间的封装层102、位于所述封装层102上的触控层103。所述触控层103位于所述彩膜层300与所述封装层102之间。
在一些实施例中，请参阅图5，所述显示面板100还包括位于所述彩膜层300上的透明光阻层104、位于所述透明光阻层104上的粘结层105、及位于所述粘结层105上的盖板106。
在一些实施例中，所述遮光材料的光密度（OD）值大于2/μm，所述遮光材料折射率为1.2至1.8，以匹配在显示面板100中的透明光阻层104折射率，显示面板100中的透明光阻层104折射率约为1.4，避免两种材料折射率差异过大，避免增加反射率，影响显示效果。
在一些实施例中，颜色色阻310及透明光阻层104均为低温光阻材料，其制程温度均不高于90℃。
在一些实施例中，透明光阻层104作为平坦层，透明光阻层104的厚度为380nm至780nm，透明光阻层104的透过率≥90%。
本申请通过在炭黑颗粒的表面修饰含氧基团，在表面生成酸性官能基团和捕捉游离基基团，使炭黑颗粒的表面活性和表面极化增加，炭黑颗粒的附聚趋势降低，从而提高炭黑颗粒的分散性，提升显影液对已聚集的碳黑颗粒的黑点的溶解反应，避免黑点的产生，提高了显示面板的显示发光性能。
请参阅图7，本申请实施例还提供了一种显示面板的制作方法，包括：
S100、提供多个炭黑颗粒20；
S200、将所述炭黑颗粒20与氧化液混合，在所述炭黑颗粒20的表面上形成至少一功能基团30，以形成遮光组分10；
S300、在发光功能层200上形成包括所述遮光组分10的多个遮光单元320及位于相邻两个所述遮光单元320之间的颜色色阻310。
其中，所述氧化液为硝酸、过氧化氢溶液、饱和过硫酸铵溶液、高氯酸、次氯酸、异氰酸盐溶液、高锰酸钾溶液中任一种或多种的混合。
本申请通过在炭黑颗粒的表面修饰含氧基团，在表面生成酸性官能基团和捕捉游离基基团，使炭黑颗粒的表面活性和表面极化增加，炭黑颗粒的附聚趋势降低，从而提高炭黑颗粒的分散性，提升显影液对已聚集的碳黑颗粒的黑点的溶解反应，避免黑点的产生，提高了显示面板的显示发光性能。
现结合具体实施例对本申请的技术方案进行描述。
本实施例中，所述显示面板的制作方法包括：
S100、提供多个炭黑颗粒20。
在一些实施例中，步骤S100包括：
S110、将炭黑颗粒20依次经过去离子水、丙酮、酒精、蒸馏水的清洗，获得第一悬浊液。
在一些实施例中，步骤S110的每一类型的清洗时间为15min至30min。
S120、将所述第一悬浊液用超声波清洗。
S130、将所述第一悬浊液过滤烘干。
在一些实施例中，经过步骤S110、S120、S130处理的所述炭黑颗粒20，可以提高所述炭黑颗粒20本身的分散性，其中，步骤S110的清洗，可以去除多余杂质，提高所述炭黑颗粒20的分散性，步骤S120的超声波清洗，超声波震动可以提高进一步分散聚集的炭黑颗粒20。
在一些实施例中，步骤S130的过滤用滤径为0.3μm的滤芯过滤。
在一些实施例中，所述炭黑颗粒20的粒径为100nm至150nm。将所述炭黑颗粒20控制在该范围内，一方面提高均一性，提高遮光性能，另一方面选取较大颗粒直径的所述炭黑颗粒20，较容易进行集中的集团修饰，大颗粒本身也更容易提高炭黑颗粒20的分散性，减少炭黑乐力聚集，避免黑点的产生，提高了显示面板100的显示发光性能。
S200、将所述炭黑颗粒20与氧化液混合，在所述炭黑颗粒20的表面上形成至少一功能基团30，以形成遮光组分。
在一些实施例中，所述氧化液为硝酸、过氧化氢溶液、饱和过硫酸铵溶液、高氯酸、次氯酸、异氰酸盐溶液、高锰酸钾溶液中任一种或多种的混合。强氧化性的所述氧化液可以将酸性官能基团31或捕捉游离基基团32修饰在所述炭黑颗粒20的表面上。
在一些实施例中，步骤S200包括：
S210、将所述炭黑颗粒20与氧化液混合，形成第一混合物；
S220、将所述第一混合物经超声处理及搅拌处理，以在所述炭黑颗粒20的表面上形成至少一功能基团30。
在一些实施例中，步骤S220中的超声处理的时间为3小时以上，以使所述第一混合物可以充分反应及使所述炭黑颗粒20充分地分散。
在一些实施例中，步骤S220中的搅拌处理的时间为20小时以上，以使所述第一混合物可以充分反应及使所述炭黑颗粒20充分地分散。
S230、将所述第一混合物真空干燥。
在一些实施例中，步骤S230的温度为80℃至120℃。
在一些实施例中，所述炭黑颗粒20的表面包括联苯环，任一所述功能基团30连接至所述炭黑颗粒20的表面上的联苯环上。
联苯环上易于修饰取代基团，可以控制所述功能基团30的修饰比例，调节炭黑颗粒20的聚集程度，提高炭黑颗粒20的分散性，避免黑点的产生，提高了显示面板100的显示发光性能。
在一些实施例中，请参阅图6，一个苯环上至多连接一个所述功能基团30。一个苯环上至多连接一个所述功能基团30，可以保证所述功能基团30可以相对分散，以均匀提高所述炭黑颗粒20的分散性，同时在一个苯环上修饰一个所述功能基团30，也可以避免多个所述功能基团30在一个苯环上相互影响，在添加修饰过程更容易，避免产生其他作用产物。
在一些实施例中，所述遮光组分10包括多个功能组基团，在一个所述功能组基团中，相邻两个所述功能基团30分别位于相邻两个所述苯环上，相邻两个所述功能组基团间隔设置。
在一些实施例中，所述功能组基团均匀分布。将间隔设置的所述功能组基团均匀分布，提高所述炭黑颗粒20的性能均匀，提高炭黑颗粒20的分散性，避免黑点的产生，提高了显示面板100的显示发光性能。
在一些实施例中，所述功能基团30位于靠近所述联苯环的边缘端一侧。
在一些实施例中，相邻两个所述功能基团30之间至少连接有3个碳原子。
在一些实施例中，所述步骤S200还包括：
S240、将所述炭黑颗粒20与载体组分、功能溶剂、及稳定剂混合，形成遮光材料。
在一些实施例中，所述遮光材料还包括载体组分、功能溶剂、及稳定剂；其中，所述遮光组分10占所述遮光材料的质量分数为1%至10%，所述载体组分占所述遮光材料的质量分数为5%至15%，所述功能溶剂占所述遮光材料的质量分数为70%至90%，所述稳定剂占所述遮光材料的质量分数为1%至5%。
在一些实施例中，所述载体组分为亚克力体系，可以为丙烯酸树脂，是所述遮光材料的主要组成，起到承载其他组分的作用。
在一些实施例中，所述功能溶剂包括光阻溶剂及通用溶剂，所述光阻溶剂占所述遮光材料的质量分数为40%至50%，所述通用溶剂占所述遮光材料的质量分数为30%至40%。
在一些实施例中，所述光阻溶剂为丙二醇甲醚醋酸酯（PGMEA)，分子式为C 6H 12O 3，无色吸湿液体，有特殊气味，是一种具有多官能团的非公害溶剂，用于光阻溶剂。
在一些实施例中，所述通用溶剂为环己酮。
在一些实施例中，所述稳定剂为琥珀酸二甲酯。
S300、在发光功能层200上形成包括所述遮光组分10的多个遮光单元320及位于相邻两个所述遮光单元320之间的颜色色阻310。
在一些实施例中，步骤S300包括：
S310、利用包括所述遮光组分10、所述载体组分、功能溶剂、及稳定剂的所述遮光材料，在发光功能层200上形成多个遮光单元320。
S320、在相邻两个所述遮光单元320之间形成颜色色阻310。
在一些实施例中，请参阅图5，所述发光功能层200包括多个发光单元210，所述发光单元210的颜色为红色单元R、绿色单元G、蓝色单元B中的任一种，所述颜色色阻310的颜色与所述发光单元210的颜色对应。
本申请通过在炭黑颗粒的表面修饰含氧基团，在表面生成酸性官能基团和捕捉游离基基团，使炭黑颗粒的表面活性和表面极化增加，炭黑颗粒的附聚趋势降低，从而提高炭黑颗粒的分散性，提升显影液对已聚集的碳黑颗粒的黑点的溶解反应，避免黑点的产生，提高了显示面板的显示发光性能。
请参阅图8，本申请实施例还提供了一种显示装置1，如任一上述的显示面板100及装置主体2，所述装置主体2与所述显示面板100组合为一体。
所述显示面板100的具体结构请参阅任一上述显示面板100的实施例及附图，在此不再赘述。
本实施例中，所述装置主体2可以包括中框、框胶等，所述显示装置1可以为手机、平板等移动显示终端，在此不做限定。
本申请通过在炭黑颗粒的表面修饰含氧基团，在表面生成酸性官能基团和捕捉游离基基团，使炭黑颗粒的表面活性和表面极化增加，炭黑颗粒的附聚趋势降低，从而提高炭黑颗粒的分散性，提升显影液对已聚集的碳黑颗粒的黑点的溶解反应，避免黑点的产生，提高了显示面板的显示发光性能。
本申请实施例公开了一种显示面板及其制作方法、显示装置；显示面板包括发光功能层以及位于发光功能层上的彩膜层，彩膜层包括遮光单元，遮光单元包括遮光材料，遮光材料包括遮光组分，遮光组分包括多个炭黑颗粒、及位于炭黑颗粒的表面上至少一功能基团，功能基团为酸性官能基团或捕捉游离基基团，酸性官能基团为羧基、羟基、羰基中任一种，捕捉游离基基团为酮基；本申请通过在炭黑颗粒的表面修饰含氧基团，在表面生成酸性官能基团和捕捉游离基基团，使炭黑颗粒的表面活性和表面极化增加，炭黑颗粒的附聚趋势降低，从而提高炭黑颗粒的分散性，提升显影液对已聚集的碳黑颗粒的黑点的溶解反应，避免黑点的产生，提高了显示面板的显示发光性能。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种显示面板，其中，包括：
    发光功能层，包括多个发光单元；以及
    彩膜层，位于所述发光功能层上，所述彩膜层包括与所述发光单元对应的颜色色阻及位于相邻两个所述颜色色阻之间的遮光单元，所述遮光单元包括遮光材料，所述遮光材料包括遮光组分，所述遮光组分包括多个炭黑颗粒、及位于所述炭黑颗粒的表面上至少一功能基团，所述功能基团为酸性官能基团或捕捉游离基基团；
    其中，所述酸性官能基团为羧基、羟基、羰基中任一种，所述捕捉游离基基团为酮基。
  2. 根据权利要求1所述的显示面板，其中，任一所述功能基团连接至所述炭黑颗粒的表面上的联苯环上。
  3. 根据权利要求2所述的显示面板，其中，一个苯环上至多连接一个所述功能基团。
  4. 根据权利要求2所述的显示面板，其中，所述功能基团位于靠近所述联苯环的边缘端一侧。
  5. 根据权利要求2所述的显示面板，其中，相邻两个所述功能基团之间至少连接有3个碳原子。
  6. 根据权利要求1所述的显示面板，其中，所述遮光材料还包括载体组分、功能溶剂、及稳定剂；
    其中，所述遮光组分占所述遮光材料的质量分数为1%至10%，所述载体组分占所述遮光材料的质量分数为5%至15%，所述功能溶剂占所述遮光材料的质量分数为70%至90%，所述稳定剂占所述遮光材料的质量分数为1%至5%。
  7. 根据权利要求1所述的显示面板，其中，所述炭黑颗粒的粒径为100nm至150nm。
  8. 一种显示面板的制作方法，其中，包括：
    提供多个炭黑颗粒；
    将所述炭黑颗粒与氧化液混合，在所述炭黑颗粒的表面上形成至少一功能基团，以形成遮光组分；
    在发光功能层上形成包括所述遮光组分的多个遮光单元及位于相邻两个所述遮光单元之间的颜色色阻；
    其中，所述氧化液为硝酸、过氧化氢溶液、饱和过硫酸铵溶液、高氯酸、次氯酸、异氰酸盐溶液、高锰酸钾溶液中任一种或多种的混合。
  9. 根据权利要求8所述显示面板的制作方法，其中，所述将所述炭黑颗粒与氧化液混合，以在所述炭黑颗粒的表面上形成至少一功能基团的步骤包括：
    将所述炭黑颗粒与氧化液混合，形成第一混合物；
    将所述第一混合物经超声处理及搅拌处理，以在所述炭黑颗粒的表面上形成至少一功能基团。
  10. 根据权利要求8所述显示面板的制作方法，其中，所述将所述炭黑颗粒与氧化液混合，在所述炭黑颗粒的表面上形成至少一功能基团，以形成遮光组分的步骤包括：
    将所述炭黑颗粒与氧化液混合，形成第一混合物；
    将所述第一混合物经超声处理及搅拌处理，以在所述炭黑颗粒的表面上形成至少一功能基团；
    将所述第一混合物真空干燥；
    将所述炭黑颗粒与载体组分、功能溶剂、及稳定剂混合，形成遮光材料。
  11. 根据权利要求10所述显示面板的制作方法，其中，所述在发光功能层上形成包括所述遮光组分的多个遮光单元及位于相邻两个所述遮光单元之间的颜色色阻的步骤包括：
    利用包括所述遮光组分、所述载体组分、功能溶剂、及稳定剂的所述遮光材料，在发光功能层上形成多个遮光单元；
    在相邻两个所述遮光单元之间形成颜色色阻。
  12. 根据权利要求11所述显示面板的制作方法，其中，所述遮光组分占所述遮光材料的质量分数为1%至10%，所述载体组分占所述遮光材料的质量分数为5%至15%，所述功能溶剂占所述遮光材料的质量分数为70%至90%，所述稳定剂占所述遮光材料的质量分数为1%至5%。
  13. 根据权利要求8所述显示面板的制作方法，其中，所述提供多个炭黑颗粒的步骤包括：
    将炭黑颗粒依次经过去离子水、丙酮、酒精、蒸馏水的清洗，获得第一悬浊液；
    将所述第一悬浊液用超声波清洗；
    将所述第一悬浊液过滤烘干。
  14. 一种显示装置，其中，包括显示面板及装置主体，所述显示面板及所述装置主体组合为一体，所述显示面板包括：
    发光功能层，包括多个发光单元；以及
    彩膜层，位于所述发光功能层上，所述彩膜层包括与所述发光单元对应的颜色色阻及位于相邻两个所述颜色色阻之间的遮光单元，所述遮光单元包括遮光材料，所述遮光材料包括遮光组分，所述遮光组分包括多个炭黑颗粒、及位于所述炭黑颗粒的表面上至少一功能基团，所述功能基团为酸性官能基团或捕捉游离基基团；
    其中，所述酸性官能基团为羧基、羟基、羰基中任一种，所述捕捉游离基基团为酮基。
  15. 根据权利要求14所述的显示装置，其中，任一所述功能基团连接至所述炭黑颗粒的表面上的联苯环上。
  16. 根据权利要求15所述的显示装置，其中，一个苯环上至多连接一个所述功能基团。
  17. 根据权利要求15所述的显示装置，其中，所述功能基团位于靠近所述联苯环的边缘端一侧。
  18. 根据权利要求15所述的显示装置，其中，相邻两个所述功能基团之间至少连接有3个碳原子。
  19. 根据权利要求14所述的显示装置，其中，所述遮光材料还包括载体组分、功能溶剂、及稳定剂；
    其中，所述遮光组分占所述遮光材料的质量分数为1%至10%，所述载体组分占所述遮光材料的质量分数为5%至15%，所述功能溶剂占所述遮光材料的质量分数为70%至90%，所述稳定剂占所述遮光材料的质量分数为1%至5%。
  20. 根据权利要求14所述的显示装置，其中，所述炭黑颗粒的粒径为100nm至150nm。
PCT/CN2021/136495 2021-11-30 2021-12-08 显示面板及其制作方法、显示装置 WO2023097718A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/617,925 US20240010842A1 (en) 2021-11-30 2021-12-08 Display panel, manufacturing method thereof, and display device thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111450503.5 2021-11-30
CN202111450503.5A CN114156329B (zh) 2021-11-30 2021-11-30 显示面板及其制作方法、显示装置

Publications (1)

Publication Number Publication Date
WO2023097718A1 true WO2023097718A1 (zh) 2023-06-08

Family

ID=80455149

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/136495 WO2023097718A1 (zh) 2021-11-30 2021-12-08 显示面板及其制作方法、显示装置

Country Status (3)

Country Link
US (1) US20240010842A1 (zh)
CN (1) CN114156329B (zh)
WO (1) WO2023097718A1 (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09265006A (ja) * 1996-03-27 1997-10-07 Toray Ind Inc 樹脂ブラックマトリックス、黒色ペースト、およびカラーフィルタ
JP2005166645A (ja) * 2003-11-14 2005-06-23 Asahi Glass Co Ltd 画像表示素子の隔壁の形成方法
CN103443155A (zh) * 2011-03-25 2013-12-11 东丽株式会社 黑色树脂组合物、树脂黑矩阵基板和触摸面板
CN104254790A (zh) * 2012-02-29 2014-12-31 大同化成工业株式会社 黑色矩阵用炭黑分散体
CN111190328A (zh) * 2013-09-25 2020-05-22 三菱化学株式会社 感光性着色组合物、黑色矩阵、着色间隔物、图像显示装置及颜料分散液
CN112159585A (zh) * 2020-08-25 2021-01-01 苏州市雄林新材料科技有限公司 一种高耐候遮光膜及其制备方法
CN112861763A (zh) * 2021-02-25 2021-05-28 京东方科技集团股份有限公司 显示基板及显示装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09328618A (ja) * 1996-06-11 1997-12-22 Toray Ind Inc 遮光材料、黒色ペースト、カラーフィルタおよび液晶表示装置
US9238736B2 (en) * 2010-10-15 2016-01-19 Cabot Corporation Surface modified organic black pigments, surface modified carbon blacks, pigment mixtures using them, and low dielectric black dispersions, coatings, films, black matrices, and devices containing same
TWI585527B (zh) * 2012-02-29 2017-06-01 新日鐵住金化學股份有限公司 A photosensitive composition for black matrix and a method for producing the same
JP6013244B2 (ja) * 2013-03-22 2016-10-25 富士フイルム株式会社 カーボンブラック組成物およびカーボンブラック含有塗膜
WO2015056688A1 (ja) * 2013-10-16 2015-04-23 サカタインクス株式会社 ブラックマトリックス用顔料分散物及びそれを含有するブラックマトリックス用顔料分散レジスト組成物
CN103923498B (zh) * 2014-04-10 2016-06-22 京东方科技集团股份有限公司 形成黑矩阵的组合物、黑矩阵、显示基板和改性方法
CN104710844A (zh) * 2015-02-28 2015-06-17 京东方科技集团股份有限公司 改性炭黑粒子、色浆、组合物、彩膜基板及制备方法,液晶面板和tft-lcd显示装置
WO2017057281A1 (ja) * 2015-09-30 2017-04-06 東レ株式会社 ネガ型感光性樹脂組成物、硬化膜、硬化膜を具備する素子及び表示装置、並びにその製造方法
US20200091265A1 (en) * 2016-12-26 2020-03-19 Toray Industries, Inc. Organic el display device
WO2019065789A1 (ja) * 2017-09-27 2019-04-04 三菱ケミカル株式会社 感光性樹脂組成物、硬化物、ブラックマトリックス及び画像表示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09265006A (ja) * 1996-03-27 1997-10-07 Toray Ind Inc 樹脂ブラックマトリックス、黒色ペースト、およびカラーフィルタ
JP2005166645A (ja) * 2003-11-14 2005-06-23 Asahi Glass Co Ltd 画像表示素子の隔壁の形成方法
CN103443155A (zh) * 2011-03-25 2013-12-11 东丽株式会社 黑色树脂组合物、树脂黑矩阵基板和触摸面板
CN104254790A (zh) * 2012-02-29 2014-12-31 大同化成工业株式会社 黑色矩阵用炭黑分散体
CN111190328A (zh) * 2013-09-25 2020-05-22 三菱化学株式会社 感光性着色组合物、黑色矩阵、着色间隔物、图像显示装置及颜料分散液
CN112159585A (zh) * 2020-08-25 2021-01-01 苏州市雄林新材料科技有限公司 一种高耐候遮光膜及其制备方法
CN112861763A (zh) * 2021-02-25 2021-05-28 京东方科技集团股份有限公司 显示基板及显示装置

Also Published As

Publication number Publication date
CN114156329A (zh) 2022-03-08
CN114156329B (zh) 2023-07-04
US20240010842A1 (en) 2024-01-11

Similar Documents

Publication Publication Date Title
WO2017049786A1 (zh) 量子点显示装置及其制作方法
CN109856886B (zh) 一种柔性全息聚合物分散液晶光栅及其制备方法
WO2016101390A1 (zh) 量子点彩色滤光片的制作方法及液晶显示装置
KR20150137125A (ko) 액정 표시 장치 및 이를 제조하는 방법
KR20120030068A (ko) 흑색 복합 미립자, 흑색 수지 조성물, 컬러 필터 기판, 및 액정 표시 장치
US20210026193A1 (en) Display substrate, manufacturing method therefor, and display panel
JPH08254705A (ja) 紫外線架橋化合物、液晶表示素子用配向膜及び液晶表示素子
JP2007131831A (ja) ベンゼン化合物で表面処理されたカーボンブラック及びこれを利用したカラーフィルター用ブラックマトリックスに用いるカーボンブラック分散液組成物
WO2020199463A1 (zh) 颜料分散液的制备方法
JP2014098927A (ja) 液晶表示装置用スペーサの製造方法、これにより製造されたスペーサを含む液晶表示装置用基板、およびこれを含む液晶表示装置
CN1721957A (zh) 液晶显示屏板及其生产方法
WO2023097718A1 (zh) 显示面板及其制作方法、显示装置
JP2004294648A (ja) 液晶パネルおよびその製造方法
CN106504987B (zh) 用于银层的蚀刻溶液组合物、使用其制作金属图案的方法和制作显示基板的方法
JP2001083315A (ja) 遮光性薄膜およびこれを用いた樹脂ブラックマトリクス
KR101969151B1 (ko) 안료 분산액 및 이를 포함하는 착색 감광성 수지 조성물
CN1114840C (zh) 生产液晶显示器的方法
CN108384530B (zh) 一种包裹量子点的咔唑基共轭微孔聚合物微球及其制备方法、一种量子点薄膜及其应用
US11352364B2 (en) Phthalocyanine nanosphere, preparation method thereof, and color filter
CN110441988A (zh) 正型光阻组成物及切割道形成方法
CN108535961B (zh) 一种彩色光刻胶组合物
JP6056369B2 (ja) 黒色材料、黒色材料分散液、黒色樹脂組成物、黒色膜、黒色膜付き基材、及び固体撮像素子
US20190121234A1 (en) Color resist material of color filter and method for preparing color resist pattern of color filter
US20210199862A1 (en) Color film substrate, fabrication method thereof, and display device
JP2013156634A (ja) 液晶モジュールを用いた画像表示装置および液晶モジュールの製造方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 17617925

Country of ref document: US