CN111613655A - Display panel, manufacturing method thereof and display device - Google Patents

Display panel, manufacturing method thereof and display device Download PDF

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Publication number
CN111613655A
CN111613655A CN202010463445.9A CN202010463445A CN111613655A CN 111613655 A CN111613655 A CN 111613655A CN 202010463445 A CN202010463445 A CN 202010463445A CN 111613655 A CN111613655 A CN 111613655A
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layer
sub
pixel
light
opening
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陈伟伟
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Hefei Visionox Technology Co Ltd
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Hefei Visionox Technology Co Ltd
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Priority to CN202010463445.9A priority Critical patent/CN111613655A/en
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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/122Pixel-defining structures or layers, e.g. banks
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/1201Manufacture or treatment
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/38Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00Manufacture or treatment specially adapted for the organic devices covered by this subclass

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  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The invention discloses a display panel, a manufacturing method thereof and a display device. The display panel includes: a substrate base plate; a pixel defining layer disposed on the substrate, the pixel defining layer including a plurality of openings for receiving sub-pixels A1-An, the sub-pixels A1-An combining to form a light emitting unit, n being An integer greater than or equal to 3; an encapsulation layer disposed over the pixel definition layer and the sub-pixels A1-An; the functional layer is arranged on the packaging layer and comprises a light shading layer arranged corresponding to the pixel limiting layer and a color filter layer arranged corresponding to the opening; the size of the opening for accommodating the sub-pixel A1 is different from that of the opening for accommodating the sub-pixel Ai, the light-emitting angles of the sub-pixels A1-An after being shielded by the light shielding layer are equal, and i is any one of 2,3, … and n. The display panel can ensure that the light-emitting angles of light with different colors are consistent on the premise of replacing a polaroid with a functional layer, thereby improving the problem of visual color cast of the display panel.

Description

Display panel, manufacturing method thereof and display device
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel, a manufacturing method of the display panel and a display device.
Background
An Active-Matrix Organic Light-Emitting Diode (AMOLED) display technology is a display technology with great development prospect, and a display panel manufactured by using the technology has the advantages of self luminescence, super lightness and thinness, wide viewing angle, high response speed, low power consumption, capability of realizing flexible display and the like, and is widely applied to the field of display.
The conventional AMOLED display panel usually employs a light shielding layer + color filter layer structure to replace the conventional polarizer. However, due to the non-uniform RGB openings of the AMOLED display panel, visual color shift is often caused, which affects the display effect of the display panel.
Disclosure of Invention
The invention provides a display panel, a manufacturing method thereof and a display device, which can ensure that light-emitting angles of light with different colors are consistent on the premise of replacing a polaroid by a functional layer, thereby improving the problem of visual color cast of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including:
a substrate base plate; a pixel defining layer disposed on the substrate, the pixel defining layer including a plurality of openings for receiving sub-pixels A1-An, the sub-pixels A1-An combining to form a light emitting unit, n being An integer greater than or equal to 3;
an encapsulation layer disposed over the pixel definition layer and the sub-pixels A1-An; the functional layer is arranged on the packaging layer and comprises a light shading layer arranged corresponding to the pixel limiting layer and a color filter layer arranged corresponding to the opening;
the size of the opening for accommodating the sub-pixel A1 is different from that of the opening for accommodating the sub-pixel Ai, the light-emitting angles of the sub-pixels A1-An after being shielded by the light shielding layer are equal, and i is any one of 2,3, … and n.
As above, optionally, if the size of the opening for accommodating the sub-pixel a1 is smaller than that of the opening for accommodating the sub-pixel Ai, the thickness of the light-shielding layer on both sides of the sub-pixel a1 is smaller than that of the light-shielding layer on both sides of the sub-pixel Ai;
if the size of the opening for accommodating the sub-pixel a1 is larger than that of the opening for accommodating the sub-pixel Ai, the thickness of the light-shielding layers on both sides of the sub-pixel a1 is larger than that of the light-shielding layers on both sides of the sub-pixel Ai.
The display panel as above, optionally, when the edge of the light shielding layer is flush with the edge of the pixel defining layer corresponding thereto,
(H1+H0)/T1=(Hi+H0)/Ti;
wherein, T1 is the distance between the farthest points on the opening boundary of the sub-pixel a1, Ti is the distance between the farthest points on the opening boundary of the sub-pixel Ai, H1 is the thickness of the light-shielding layer on both sides of the sub-pixel a1, Hi is the thickness of the light-shielding layer on both sides of the sub-pixel Ai, and H0 is the thickness of the encapsulation layer.
As in the display panel above, optionally, the light-shielding layers on both sides of the sub-pixel a1 include the first light-shielding layer; the shading layers on two sides of the sub-pixel Ai comprise a first shading layer and a second shading layer which are sequentially laminated.
As in the display panel above, optionally, the light-shielding layers on both sides of the sub-pixel a1 include the first light-shielding layer and the adhesive layer which are sequentially stacked; the shading layers on two sides of the sub-pixel Ai comprise a first shading layer, an adhesive layer and a second shading layer which are sequentially stacked.
In a second aspect, an embodiment of the present invention further provides a display device, which includes a display panel having any one of the features of the first aspect.
In a third aspect, an embodiment of the present invention further provides a method for manufacturing a display panel, including:
forming a thin film transistor layer on a substrate;
forming a pixel defining layer comprising a plurality of openings on the thin-film transistor layer, and forming sub-pixels A1-An in the openings, wherein the sub-pixels A1-An combine to form a light-emitting unit, and n is An integer greater than or equal to 3;
forming An encapsulation layer on the pixel defining layer and the sub-pixels a 1-An;
forming a functional layer on the packaging layer, wherein the functional layer comprises a light shading layer arranged corresponding to the pixel limiting layer and a color filter layer arranged corresponding to the opening;
the size of the opening for accommodating the sub-pixel A1 is different from that of the opening for accommodating the sub-pixel Ai, the light-emitting angles of the sub-pixels A1-An after being shielded by the light shielding layer are equal, and i is any one of 2,3, … and n.
As above, optionally, if the size of the opening for accommodating the sub-pixel a1 is smaller than the size of the opening for accommodating the sub-pixel Ai, forming a functional layer on the encapsulation layer includes:
depositing a layer of light-shielding material on the encapsulation layer;
carrying out a primary composition process on the shading material, and forming a color filter layer on the packaging layer;
the light-shielding material on both sides of the sub-pixel a1 is subjected to a patterning process again to form a light-shielding layer.
As above, optionally, if the size of the opening for accommodating the sub-pixel a1 is smaller than the size of the opening for accommodating the sub-pixel Ai, forming a functional layer on the encapsulation layer includes:
depositing a layer of light-shielding material on the encapsulation layer;
carrying out a primary composition process on the shading material to form a first shading layer;
forming a color filter layer on the encapsulation layer;
and forming second shading layers on the first shading layers at two sides of the sub-pixel Ai.
As above, optionally, if the size of the opening for accommodating the sub-pixel a1 is smaller than the size of the opening for accommodating the sub-pixel Ai, forming a functional layer on the encapsulation layer includes:
depositing a layer of light-shielding material on the encapsulation layer;
carrying out a primary composition process on the shading material to form a first shading layer;
forming an adhesive layer on the first shading layer, and forming a color filtering layer on the adhesive layer;
and forming a second shading layer on the adhesive layer at two sides of the sub-pixel Ai.
The invention provides a display panel, a manufacturing method thereof and a display device, wherein a structure of a light shielding layer and a color filter layer is adopted, so that a functional layer can replace a polaroid, and the structure of the functional layer is designed, so that light-emitting angles of sub-pixels A1-An with different openings after being shielded by the light shielding layer are equal, the problem of visual color cast of the display panel is solved, and the purpose of improving the display effect of the display panel is achieved.
Drawings
FIG. 1 is a schematic diagram of a prior art display panel for producing visual color shift;
fig. 2 is a schematic cross-sectional view of a display panel according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a functional layer according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of another functional layer provided in an embodiment of the present invention;
fig. 5 is a schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of the invention;
FIG. 6 is a schematic diagram illustrating the fabrication of a functional layer according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating the fabrication of another functional layer provided by embodiments of the present invention;
fig. 8 is a schematic diagram illustrating a manufacturing process of another functional layer according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Also, the drawings and description of the embodiments are to be regarded as illustrative in nature, and not as restrictive. Like reference numerals refer to like elements throughout the specification. In addition, the thickness of some layers, films, panels, regions, etc. may be exaggerated in the drawings for understanding and ease of description. It will also be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In addition, "on … …" means that an element is positioned on or under another element, but does not essentially mean that it is positioned on the upper side of the other element according to the direction of gravity. For ease of understanding, the figures of the present invention depict one element on top of another.
Additionally, unless explicitly described to the contrary, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
It should also be noted that references to "and/or" in embodiments of the invention are intended to include any and all combinations of one or more of the associated listed items. Various components are described in embodiments of the present invention with "first", "second", "third", and the like, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Also, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
While certain embodiments may be practiced differently, the specific process sequence may be performed differently than described. For example, two processes described consecutively may be performed at substantially the same time or in an order reverse to that described.
The conventional AMOLED display panel usually employs a light shielding layer + color filter layer structure to replace the conventional polarizer. However, since the white light emitted by the AMOLED display panel at least consists of three primary colors, namely red, green and blue, the performance of the light with different colors is different, and the sizes of the openings corresponding to the light with different colors cannot be completely consistent, which may cause visual color shift and affect the display effect of the display panel. For example, fig. 1 shows a schematic diagram of a display panel generating a visual color shift, as shown in fig. 1, the light-emitting angle of the red sub-pixel is significantly smaller than the light-emitting angles of the green sub-pixel and the blue sub-pixel. Embodiments of the present invention provide a display panel, a manufacturing method thereof, and a display device, which can ensure that light emitting angles of lights with different colors are consistent on the premise that a functional layer is used to replace a polarizer, so as to improve a visual color cast problem of the display panel.
Hereinafter, the structure, technical effects, and manufacturing method of the display panel will be described in detail.
In addition, the following embodiments are all exemplified by the case where the display panel is rectangular, and in practical applications, the display panel may be in a regular or irregular shape such as a circle, a polygon, and the like, and the present invention is not particularly limited thereto. Meanwhile, in order to more clearly describe the functional layers in the display panel, the embodiments of the present invention adjust the sizes of the structures in the display panel in the following drawings.
Fig. 2 is a schematic cross-sectional view illustrating a display panel according to an embodiment of the present invention. Illustratively, the display panel includes: a base substrate 10; a pixel defining layer 11 disposed on the base substrate 10, the pixel defining layer 11 including a plurality of openings for receiving sub-pixels a1-An, the sub-pixels a1-An combining to form a light emitting unit, and n is An integer of 3 or more. That is, the display panel includes n sub-pixels (the n sub-pixels are respectively denoted as sub-pixel a1, sub-pixels a2, …, and sub-pixel An), for example, fig. 2 takes n as 3, three sub-pixels are respectively drawn corresponding to blue sub-pixel A3, green sub-pixel a2, and red sub-pixel a1, An opening for accommodating red sub-pixel a1 is denoted as 111, An opening for accommodating green sub-pixel a2 is denoted as 112, and An opening for accommodating blue sub-pixel A3 is denoted as 113.
An encapsulation layer 13 disposed on the pixel defining layer 11 and the sub-pixels a 1-An; and a functional layer 14 provided on the encapsulation layer 13, the functional layer 14 including a light shielding layer 141 provided corresponding to the pixel defining layer 11 and a color filter layer 142 provided corresponding to the opening. Specifically, the red sub-pixel a1 corresponds to a red filter layer, the green sub-pixel a2 corresponds to a green filter layer, and the blue sub-pixel A3 corresponds to a blue filter layer. The functional layer 14 can replace a polarizer, thereby reducing the manufacturing cost of the display panel.
The size of the opening for accommodating the red sub-pixel A1 is not equal to that of the opening for accommodating the sub-pixel Ai, the light-emitting angles of the sub-pixels A1-An after being shielded by the light shielding layer are equal, and i is any one of 2,3, … and n. As can be seen from fig. 2, the size of the opening for accommodating the red subpixel a1 is different from the size of the opening for accommodating the green subpixel a2 and the size of the opening for accommodating the blue subpixel A3, but the light-emitting angles of the red subpixel a1, the green subpixel a2 and the blue subpixel A3 after being shielded by the light-shielding layer 141 are equal, that is, α ═ β ═ γ, so that the problem of visual color shift of the display panel is improved, and the purpose of improving the display effect of the display panel is achieved.
It should be noted that, in order to ensure that the light-emitting angles of the sub-pixels a1-An after being shielded by the light-shielding layer are equal, the thicknesses of the light-shielding layers on the two sides of the sub-pixels a1-An need to be adjusted according to the size of the openings for accommodating the sub-pixels a 1-An. Specifically, the size of the opening for accommodating the sub-pixels A1-An is positively correlated with the thickness of the light-shielding layer on both sides of the sub-pixels A1-An.
That is, if the size of the opening for accommodating the sub-pixel a1 is smaller than the size of the opening for accommodating the sub-pixel Ai, the thickness of the light-shielding layers on both sides of the sub-pixel a1 is smaller than the thickness of the light-shielding layers on both sides of the sub-pixel Ai; if the size of the opening for accommodating the sub-pixel a1 is larger than that of the opening for accommodating the sub-pixel Ai, the thickness of the light-shielding layers on both sides of the sub-pixel a1 is larger than that of the light-shielding layers on both sides of the sub-pixel Ai.
That is, when the size of the opening for accommodating the sub-pixel is too large, the thicknesses of the light-shielding layers on both sides of the sub-pixel need to be increased to reduce the light-emitting angle of the sub-pixel; when the size of the opening for accommodating the sub-pixel is too small, the thicknesses of the light shielding layers on the two sides of the sub-pixel need to be reduced to increase the light emergent angle of the sub-pixel.
When the edge of the light-shielding layer is flush with the edge of the pixel defining layer corresponding thereto, the thickness of the light-shielding layer may be calculated according to the following formula:
(H1+H0)/T1=(Hi+H0)/Ti;
wherein, T1 is the distance between the farthest points on the opening boundary of the sub-pixel a1, Ti is the distance between the farthest points on the opening boundary of the sub-pixel Ai, H1 is the thickness of the light-shielding layer on both sides of the sub-pixel a1, Hi is the thickness of the light-shielding layer on both sides of the sub-pixel Ai, and H0 is the thickness of the encapsulation layer.
When the opening of the sub-pixel is circular, the distance between the farthest two points on the boundary of the opening is the opening diameter of the sub-pixel; when the opening of the sub-pixel is rectangular, the distance between the farthest two points on the boundary of the opening is the diagonal distance of the sub-pixel; when the opening of the sub-pixel is elliptical, the distance between the farthest two points on the boundary of the opening is the major axis distance of the sub-pixel.
For example, with continued reference to fig. 2, assume that the openings for receiving the red sub-pixel a1, the green sub-pixel a2, and the blue sub-pixel A3 are all circular in shape; and the aperture diameter for accommodating the red sub-pixel a1 is smaller than the aperture diameter for accommodating the green sub-pixel a2 and the aperture diameter for accommodating the blue sub-pixel A3, the aperture diameter for accommodating the green sub-pixel a2 and the aperture diameter for accommodating the blue sub-pixel A3 are equal, and the aperture diameter for accommodating the red sub-pixel a1 is half of the aperture diameter for accommodating the green sub-pixel a2, i.e., T1-T2/2-T3/2. Then substituting the above values into a formula can obtain:
(H1+H0)/T1=(H2+H0)/T2=(H3+H0)/T3;
solving to obtain H2-H3-2H 1+ H0.
Due to the limitations of the thickness of the display panel and the thickness of the light shielding layer, in actual manufacturing, the thickness H0 of the encapsulation layer can be properly adjusted to ensure the stability of the display panel as a whole.
In the blue light, the red light and the green light, the human eye has the lowest sensitivity to the blue light and the highest sensitivity to the green light, so that the sizes of the openings of different sub-pixels can be comprehensively designed by combining the power consumption and the service life of different colors and the sensitivity of the human eye to the light, and the thicknesses of the light shielding layers on the two sides of the sub-pixels can be calculated according to the sizes of the openings of the different sub-pixels.
In addition, the present invention provides two exemplary configurations for the functional layer 14:
fig. 3 is a schematic cross-sectional structural diagram of a functional layer according to an embodiment of the present invention. As shown in fig. 3, the light-shielding layers at both sides of the sub-pixel a1 include a first light-shielding layer 141 a; the light-shielding layers on both sides of the sub-pixel Ai include a first light-shielding layer 141a and a second light-shielding layer 141b which are sequentially stacked.
Fig. 4 is a schematic cross-sectional structure diagram of another functional layer provided in an embodiment of the present invention. As shown in fig. 4, the light-shielding layers on both sides of the sub-pixel a1 include a first light-shielding layer 141a and an adhesive layer 141c stacked in sequence; the shading layers on two sides of the sub-pixel Ai comprise a first shading layer 141a, an adhesive layer 141c and a second shading layer 141b which are sequentially stacked.
Different from the functional layer shown in fig. 3, the adhesive layer 141c is formed between the first light shielding layer 141a and the second light shielding layer 141b, so that height limitation caused by direct superposition of the first light shielding layer 141a and the second light shielding layer 141b can be prevented, and the stability of the whole display panel is ensured.
In addition, the first light-shielding layer 141a and the second light-shielding layer 141b may be made of black matrix materials, and the adhesive layer 141c may be made of adhesive materials with better transparency (such as oc (over coating) adhesive), which is not limited in the embodiment of the present invention.
The sub-pixels in the embodiment of the present invention are not limited to the red sub-pixel, the green sub-pixel, and the blue sub-pixel, and may also be sub-pixels that can emit light of other colors, such as a white sub-pixel, a yellow sub-pixel, a cyan sub-pixel, or a pink sub-pixel.
An embodiment of the present invention provides a display panel, including: a substrate base plate; a pixel defining layer disposed on the substrate, the pixel defining layer including a plurality of openings for receiving sub-pixels A1-An, the sub-pixels A1-An combining to form a light emitting unit, n being An integer greater than or equal to 3; an encapsulation layer disposed over the pixel definition layer and the sub-pixels A1-An; the functional layer is arranged on the packaging layer and comprises a light shading layer arranged corresponding to the pixel limiting layer and a color filter layer arranged corresponding to the opening; the size of the opening for accommodating the sub-pixel A1 is different from that of the opening for accommodating the sub-pixel Ai, the light-emitting angles of the sub-pixels A1-An after being shielded by the light shielding layer are equal, and i is any one of 2,3, … and n. By adopting the structures of the shading layer and the color filtering layer, the functional layer can replace a polaroid, and the structure of the functional layer is designed, so that the light-emitting angles of the sub-pixels A1-An with different openings after being shaded by the shading layer are equal, the visual color cast problem of the display panel is improved, and the purpose of improving the display effect of the display panel is achieved.
Embodiments of the present invention also provide a display device including a display panel having any of the features described in the above embodiments.
The display panel may be a flexible organic light emitting display panel or a non-flexible organic light emitting display panel. The light emitting mode of the organic light emitting display panel may be top emission, bottom emission, or dual emission. The type of the display panel may be any one of display panels such as an Organic Light-Emitting Diode (OLED) display panel, an In-plane switching (IPS) display panel, a Twisted Nematic (TN) display panel, a Vertical Alignment (VA) display panel, electronic paper, a Quantum Dot Light Emitting (QLED) display panel, or a micro LED (micro Light Emitting Diode, μ LED) display panel, which is not particularly limited In the present invention.
The display device provided by the embodiment of the invention can be applied to intelligent wearable equipment (such as an intelligent bracelet and an intelligent watch) and also can be applied to equipment such as an intelligent mobile phone, a tablet personal computer and a display.
Fig. 5 is a schematic flow chart illustrating a manufacturing method of a display panel according to an embodiment of the present invention. As shown in fig. 5, the method for manufacturing a display panel may include steps S101 to S104:
and S101, forming a thin film transistor layer on the substrate.
S102, forming a pixel limiting layer comprising a plurality of openings on the thin-film transistor layer, and forming sub-pixels A1-An in the openings, wherein the sub-pixels A1-An are combined to form a light-emitting unit, and n is An integer larger than or equal to 3.
S103, forming An encapsulation layer on the pixel definition layer and the sub-pixels A1-An.
And S104, forming a functional layer on the packaging layer, wherein the functional layer comprises a light shading layer arranged corresponding to the pixel limiting layer and a color filter layer arranged corresponding to the opening.
The size of the opening for accommodating the sub-pixel A1 is different from that of the opening for accommodating the sub-pixel Ai, the light-emitting angles of the sub-pixels A1-An after being shielded by the light shielding layer are equal, and i is any one of 2,3, … and n. Taking the display substrate shown in fig. 2 as an example, the size of the opening for accommodating the red subpixel a1 is different from the size of the opening for accommodating the green subpixel a2 and the size of the opening for accommodating the blue subpixel A3, but the light-emitting angles of the red subpixel a1, the green subpixel a2 and the blue subpixel A3 after being shielded by the light-shielding layer 141 are equal, that is, α ═ β ═ γ, so that the problem of visual color cast of the display panel is improved, and the purpose of improving the display effect of the display panel is achieved.
Referring to the above embodiment, the present invention provides two structures of the functional layer 14, as shown in fig. 3 and fig. 4, respectively), and for the functional layer 14 shown in fig. 3, the present invention provides two manufacturing methods:
the first method comprises the following steps: taking the opening size for accommodating the red sub-pixel a1 smaller than the opening size for accommodating other sub-pixels Ai (including the green sub-pixel a2 and the blue sub-pixel A3) as an example, fig. 6 shows a schematic diagram of manufacturing a functional layer according to an embodiment of the present invention. Referring to fig. 6, forming the functional layer 14 on the encapsulation layer includes:
step 1, depositing a layer of light shielding material on the encapsulation layer (not shown in fig. 6).
And 2, carrying out a one-time composition process on the shading material, and forming a color filter layer on the packaging layer.
And 3, carrying out a patterning process on the light shielding material on two sides of the sub-pixel A1 to form a light shielding layer.
And the second method comprises the following steps: taking the opening size for accommodating the red sub-pixel a1 smaller than the opening size for accommodating other sub-pixels Ai (including the green sub-pixel a2 and the blue sub-pixel A3) as an example, fig. 7 shows a schematic diagram of manufacturing another functional layer according to an embodiment of the present invention. Referring to fig. 7, forming the functional layer 14 on the encapsulation layer includes:
step 1, depositing a layer of light shielding material on the encapsulation layer (not shown in fig. 7).
And 2, carrying out a one-time composition process on the shading material to form a first shading layer.
And 3, forming a color filter layer on the packaging layer.
And 4, forming second shading layers on the first shading layers at two sides of the sub-pixel Ai.
For the functional layer 14 shown in fig. 4, the present invention provides a method of fabrication:
taking the opening size for accommodating the red sub-pixel a1 smaller than the opening size for accommodating other sub-pixels Ai (including the green sub-pixel a2 and the blue sub-pixel A3) as an example, fig. 8 shows a schematic diagram of manufacturing still another functional layer according to an embodiment of the present invention. Referring to fig. 8, forming the functional layer 14 on the encapsulation layer includes:
step 1, depositing a layer of light-shielding material on the encapsulation layer (not shown in fig. 8).
And 2, carrying out a one-time composition process on the shading material to form a first shading layer.
And 3, forming an adhesive layer on the first shading layer, and forming a color filtering layer on the adhesive layer.
And 4, forming a second shading layer on the adhesive layer on the two sides of the sub-pixel Ai.
In the functional layer shown in fig. 8, the adhesive layer 141c is formed between the first light shielding layer 141a and the second light shielding layer 141b, so that height limitation caused by direct superposition of the first light shielding layer 141a and the second light shielding layer 141b can be prevented, and the stability of the whole display panel is ensured.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A display panel, comprising:
a substrate base plate;
a pixel defining layer disposed on the substrate, the pixel defining layer including a plurality of openings for receiving sub-pixels A1-An, the sub-pixels A1-An combining to form a light emitting unit, n being An integer greater than or equal to 3;
an encapsulation layer disposed over the pixel defining layer and the sub-pixels A1-An;
the functional layer is arranged on the packaging layer and comprises a light shielding layer arranged corresponding to the pixel limiting layer and a color filter layer arranged corresponding to the opening;
the size of the opening for accommodating the sub-pixel A1 is not equal to that of the opening for accommodating the sub-pixel Ai, the light-emitting angles of the sub-pixels A1-An after being shielded by the light shielding layer are equal, and i is any one of 2,3, … and n.
2. The display panel of claim 1, wherein if the size of the opening for receiving sub-pixel a1 is smaller than the size of the opening for receiving sub-pixel Ai, the thickness of the light-shielding layer on both sides of sub-pixel a1 is smaller than the thickness of the light-shielding layer on both sides of sub-pixel Ai;
if the size of the opening for accommodating the sub-pixel a1 is larger than that of the opening for accommodating the sub-pixel Ai, the thicknesses of the light-shielding layers at two sides of the sub-pixel a1 are larger than those of the light-shielding layers at two sides of the sub-pixel Ai.
3. The display panel according to claim 1, wherein when an edge of the light-shielding layer is flush with an edge of the pixel defining layer corresponding thereto,
(H1+H0)/T1=(Hi+H0)/Ti;
wherein T1 is the distance between the farthest two points on the opening boundary of the sub-pixel a1, Ti is the distance between the farthest two points on the opening boundary of the sub-pixel Ai, H1 is the thickness of the light-shielding layer on both sides of the sub-pixel a1, Hi is the thickness of the light-shielding layer on both sides of the sub-pixel Ai, and H0 is the thickness of the encapsulating layer.
4. The display panel according to claim 2, wherein the light-shielding layers on both sides of the sub-pixel a1 comprise a first light-shielding layer; the shading layers on two sides of the sub-pixel Ai comprise a first shading layer and a second shading layer which are sequentially stacked.
5. The display panel according to claim 2, wherein the light-shielding layers on both sides of the sub-pixel a1 comprise a first light-shielding layer and a glue layer which are sequentially stacked; the shading layers on two sides of the sub-pixel Ai comprise the first shading layer, the adhesive layer and the second shading layer which are sequentially stacked.
6. A display device characterized by comprising the display panel according to any one of claims 1 to 5.
7. A method for manufacturing a display panel is characterized by comprising the following steps:
forming a thin film transistor layer on a substrate;
forming a pixel defining layer comprising a plurality of openings on the thin-film transistor layer, and forming sub-pixels A1-An in the openings, wherein the sub-pixels A1-An combine to form a light-emitting unit, and n is An integer greater than or equal to 3;
forming An encapsulation layer on the pixel defining layer and the sub-pixel a 1-An;
forming a functional layer on the encapsulation layer, wherein the functional layer comprises a light shielding layer arranged corresponding to the pixel limiting layer and a color filter layer arranged corresponding to the opening;
the size of the opening for accommodating the sub-pixel A1 is not equal to that of the opening for accommodating the sub-pixel Ai, the light-emitting angles of the sub-pixels A1-An after being shielded by the light shielding layer are equal, and i is any one of 2,3, … and n.
8. The method according to claim 7, wherein if the size of the opening for accommodating the sub-pixel a1 is smaller than the size of the opening for accommodating the sub-pixel Ai, the forming the functional layer on the encapsulation layer comprises:
depositing a layer of light shielding material on the encapsulation layer;
carrying out a primary composition process on the shading material, and forming a color filter layer on the packaging layer;
and carrying out a patterning process on the light shielding material on two sides of the sub-pixel A1 to form the light shielding layer.
9. The method according to claim 7, wherein if the size of the opening for accommodating the sub-pixel a1 is smaller than the size of the opening for accommodating the sub-pixel Ai, the forming the functional layer on the encapsulation layer comprises:
depositing a layer of light shielding material on the encapsulation layer;
carrying out a primary composition process on the shading material to form a first shading layer;
forming a color filter layer on the encapsulation layer;
and forming second shading layers on the first shading layers at two sides of the sub-pixel Ai.
10. The method according to claim 7, wherein if the size of the opening for accommodating the sub-pixel a1 is smaller than the size of the opening for accommodating the sub-pixel Ai, the forming the functional layer on the encapsulation layer comprises:
depositing a layer of light shielding material on the encapsulation layer;
carrying out a primary composition process on the shading material to form a first shading layer;
forming an adhesive layer on the first shading layer, and forming a color filtering layer on the adhesive layer;
and forming a second shading layer on the adhesive layer at two sides of the sub-pixel Ai.
CN202010463445.9A 2020-05-27 2020-05-27 Display panel, manufacturing method thereof and display device Pending CN111613655A (en)

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