CN114420870A - Display panel, display device and manufacturing method of display panel - Google Patents
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/868—Arrangements for polarized light emission
-
- 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
Abstract
The embodiment of the application provides a display panel, a display device and a manufacturing method of the display panel. The light-emitting layer is positioned on one side of the substrate and comprises a plurality of light-emitting units which are distributed at intervals. The packaging layer covers the light-emitting layer, the black matrix layer is located on one side, far away from the substrate, of the packaging layer, and the black matrix layer comprises a plurality of hollow areas arranged at intervals. The polarization film layer is located the one side of keeping away from the substrate base plate of packaging layer, and the polarization film layer includes polarization film basal layer and the polarized liquid crystal layer that sets gradually along the direction of keeping away from the substrate base plate. The polarized liquid crystal layer comprises a plurality of polarized units covering a plurality of hollow areas, and a plurality of light-emitting units are positioned in orthographic projections of the polarized units on the light-emitting layers. The display panel, the display device and the manufacturing method of the display panel can improve the transmittance of the display panel, reduce the reflectivity and improve the display performance of the display panel.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a display panel, a display device, and a method for manufacturing the display panel.
Background
Organic light emitting display devices are classified as the next generation display technology with great development prospect due to their advantages of being light and thin, bendable, low power consumption, wide color gamut, high contrast, etc. In the related art, in order to improve the display performance of the display panel under illumination, a color film layer is often formed on a film package of the organic light emitting display panel, or a polarizer is often disposed on a package film of the organic light emitting display panel. However, in the related art, the color film layer and the polarizer have the disadvantages of insufficient transmittance, insufficient reflectivity, and the like, so that the display performance of the OLED display panel is not good enough, and therefore, how to improve the transmittance and reduce the reflectivity of the display panel is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
An object of the embodiments of the present application is to provide a display panel, a display device, and a method for manufacturing the display panel, so as to improve transmittance of the display panel, reduce reflectivity, and improve display performance of the display panel. The specific technical scheme is as follows:
embodiments of a first aspect of the present application provide a display panel, including:
a substrate base plate;
the light-emitting layer is positioned on one side of the substrate and comprises a plurality of light-emitting units which are distributed at intervals;
an encapsulation layer covering the light emitting layer;
the black matrix layer is positioned on one side, far away from the substrate base plate, of the packaging layer and comprises a plurality of hollow areas arranged at intervals;
the polarization film layer is located the encapsulation layer keep away from one side of substrate base plate, the polarization film layer includes along keeping away from polarization film basal layer and the polarized liquid layer that the direction of substrate base plate set gradually, the polarized liquid layer is including covering a plurality of polarization units of a plurality of hollow areas, a plurality of luminescence units are located a plurality of polarization units are in orthographic projection on the luminescent layer.
In some embodiments, the polarizing liquid crystal layer includes a dichroic dye and a polymerizable liquid crystal.
In some embodiments, the plurality of light emitting units include a plurality of red light emitting units, a plurality of green light emitting units, and a plurality of blue light emitting units, and the plurality of polarization units include a plurality of first polarization units disposed corresponding to the plurality of red light emitting units, a plurality of second polarization units disposed corresponding to the plurality of green light emitting units, and a plurality of third polarization units disposed corresponding to the plurality of blue light emitting units; the dichroic dye comprises a red dye, a green dye and a blue dye, the proportion of the red dye in the first polarizing unit is smaller than the proportion of the blue dye and the green dye, the proportion of the green dye in the second polarizing unit is smaller than the proportion of the blue dye and the red dye, and the proportion of the blue dye in the third polarizing unit is smaller than the proportion of the red dye and the green dye.
In some embodiments, the polarizing film substrate layer includes a first light alignment film layer, a first phase difference film layer, and a second light alignment film layer disposed between the encapsulation layer and the polarizing liquid crystal layer and sequentially distributed in a direction away from the encapsulation layer.
In some embodiments, the polarizing film substrate layer further includes a second phase difference film layer and a third light alignment film layer between the second light alignment film layer and the polarizing liquid crystal layer, and sequentially disposed in a direction away from the second light alignment film layer.
In some embodiments, the display panel further includes a thin film transistor array layer located on a side of the light emitting layer away from the encapsulation layer, and the thin film transistor array layer includes a plurality of driving circuits disposed corresponding to the plurality of light emitting units.
In some embodiments, the light emitting layer includes an anode layer, an organic light emitting layer, and a cathode layer on one side of the substrate and sequentially distributed in a direction away from the substrate.
An embodiment of a second aspect of the present application provides a method for manufacturing a display panel, including:
forming a light emitting layer on one side of a substrate, wherein the light emitting layer comprises a plurality of light emitting units distributed at intervals;
packaging one side of the substrate base plate to form a packaging layer;
forming a polarizing film base layer on one side of the encapsulation layer;
and forming a polarized liquid crystal layer on one side of the polarized film substrate layer, which is far away from the packaging layer, wherein the polarized liquid crystal layer comprises a plurality of polarized units covering a plurality of hollow areas, the plurality of light-emitting units are positioned in orthographic projections of the plurality of polarized units on the light-emitting layers, and the polarized film layer comprises the polarized film substrate layer and the polarized liquid crystal layer.
In some embodiments, the step of forming a polarizing film base layer on one side of the encapsulation layer comprises:
forming a first light alignment film layer on one side of the packaging layer far away from the substrate base plate;
forming a first phase difference film layer on one side, far away from the packaging layer, of the first light alignment film layer;
forming a second light alignment film layer on one side of the first phase difference film layer far away from the first light alignment film layer;
forming a second phase difference film layer on one side, far away from the first phase difference film layer, of the second light alignment film layer;
and forming a third light alignment film layer on one side of the second phase difference film layer far away from the second light alignment film layer.
Embodiments of a third aspect of the present application provide a display device comprising a display panel as described in any one of the above.
The embodiment of the application has the following beneficial effects:
the display panel, the display device and the manufacturing method of the display panel are provided by the embodiment of the application, and the display panel comprises a substrate base plate, a light-emitting layer, an encapsulation layer, a black matrix layer and a polarization film layer. The light-emitting layer is provided with a plurality of light-emitting units distributed at intervals. The packaging layer covers the light-emitting layer to package the light-emitting layer. The black matrix layer is arranged on the packaging layer and is provided with a plurality of hollow areas arranged at intervals. The polarization rete is located the packaging layer, and the polarization rete includes polarizing film stratum basale and polarization liquid crystal layer, and the polarization liquid crystal layer is including covering a plurality of polarization unit of a plurality of hollow areas, and a plurality of polarization unit and a plurality of luminescence unit correspond the setting. In the display panel that this application embodiment provided, be provided with the polarization rete on the encapsulated layer, the reflectivity of display panel can be reduced to the polarization rete, and the absorption rate that the polarization rete was put to light is lower to make the transmissivity of light higher, and then reduce display panel's luminance decay. In addition, the plurality of light-emitting units are positioned in the orthographic projection of the plurality of polarization units on the light-emitting layer, so that light generated by each light-emitting unit can better penetrate through the corresponding polarization unit, the light transmittance of the display panel is improved, and the display performance of the display panel is improved.
Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application. The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is also obvious for a person skilled in the art to obtain other embodiments according to the drawings.
FIG. 1 is a block diagram of a display panel according to some embodiments of the present disclosure;
FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;
FIG. 3 is a structural diagram of a polarizing film layer in some embodiments of the present application;
FIG. 4 is a structural diagram of another polarizing film layer in some embodiments of the present application;
FIG. 5 is an enlarged view of area B of FIG. 2;
fig. 6 is a flowchart of a method for manufacturing a display panel according to some embodiments of the present disclosure.
Reference numerals: 100-display panel, 1-substrate, 2-pixel defining layer, 3-light emitting layer, 4-encapsulating layer, 5-polarizing film layer, 6-thin film transistor array layer, 7-black matrix layer, 301-light emitting unit, 3011-anode layer, 3012-organic light emitting layer, 3013-cathode layer, 401-first inorganic encapsulating layer, 402-organic encapsulating layer, 403-second inorganic encapsulating layer, 501-first light alignment film layer, 502-first phase difference film layer, 503-second light alignment film layer, 504-second phase difference film layer, 505-third light alignment film layer, 506-polarizing liquid crystal layer, 510-polarizing film, base layer, 5061-polarizing unit, 601-buffer layer, 602-active layer, 603-first gate insulating layer, 604-first metal layer, 605-second gate insulation layer, 606-interlayer insulation layer, 607-second metal layer, 608-passivation layer, 6041-gate, 6071-source, 6072-drain.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.
In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).
In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.
In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.
In the related art, in order to reduce the reflectivity of the display panel under strong light, a Color Filter on Encapsulation Layer (COE) structure is covered on the display panel, or a POL (Polarizer) structure is covered on the display panel. The COE structure comprises a BM (Black Matrix) layer and a color film layer which are positioned on a thin film packaging layer of the display panel, and the COE structure has high light transmittance, high reflectivity and poor reflection effect, so that the display performance of the display device is not good enough. The POL structure has a low reflectance and a good reflection effect, but has a low transmittance, resulting in poor display performance of the display device.
In order to improve the display performance of the display device, embodiments of the present application provide a display panel, a display device, and a method for manufacturing the display panel, and the display panel, the method for manufacturing the display panel, and the display device provided in the embodiments of the present application will be described in detail with reference to the accompanying drawings. The DisplAy panel may be an LCD (Liquid CrystAl DisplAy), an electroluminescent DisplAy, or a photoluminescent DisplAy. In the case where the display panel is an electroluminescent display panel, the electroluminescent display panel may be an OLED (OrgAnic Light-Emitting Diode) or a QLED (QuAntum Dot electroluminescent display panel). In case the display panel is a photoluminescent display panel, the photoluminescent display panel may be a quantum dot photoluminescent display panel.
Embodiments of the first aspect of the present application provide a display panel 100, as shown in fig. 1 and 2, the display panel 100 includes a substrate 1, a light emitting layer 3, an encapsulation layer 4, a black matrix layer 7, and a polarizing film layer 5. The light-emitting layer 3 is located on one side of the substrate 1, the light-emitting layer 3 includes a plurality of light-emitting units 301 distributed at intervals, and the encapsulation layer 4 covers the light-emitting layer 3. The black matrix layer 7 is positioned on one side of the packaging layer 4 far away from the substrate base plate 1, and the black matrix layer 7 comprises a plurality of hollow areas which are arranged at intervals. The polarizing film layer 5 is located on the side of the package layer 4 away from the substrate 1, the polarizing film layer 5 includes a polarizing film base layer 510 and a polarizing liquid crystal layer 506 sequentially arranged along the direction away from the substrate 1, the polarizing liquid crystal layer 506 includes a plurality of polarizing units 5061 covering a plurality of hollow areas, and the plurality of light emitting units 301 are located in orthographic projections of the plurality of polarizing units 5061 on the light emitting layer 3.
In the display panel 100 provided in the embodiment of the present application, as shown in fig. 2, the light emitting layer 3 has a plurality of light emitting units 301 distributed at intervals. The packaging layer 4 covers the light-emitting layer 3 to package the light-emitting layer 3, so that the probability of failure of the light-emitting layer 3 due to the fact that impurities such as water and oxygen enter the light-emitting layer 3 is reduced. The polarizing film layer 5 and the black matrix layer 7 are located on the packaging layer 4, the black matrix layer 7 has a plurality of hollow areas arranged at intervals, the black matrix layer 7 is a local opaque black shading layer, and specifically, other areas on the black matrix layer 7 except the plurality of hollow areas can be coated with opaque black shading dye. The plurality of hollow regions of the black matrix layer 7 may be light-transmitting regions, and the plurality of hollow regions may correspond to the plurality of light emitting units 301 one to one. The opaque region of the black matrix layer 7 serves to reduce optical crosstalk between the adjacent light emitting cells 301. The polarizing film layer 5 has a plurality of polarizing units 5061, the plurality of polarizing units 5061 respectively cover the plurality of hollow areas, and the plurality of polarizing units 5061 respectively correspond to the plurality of light emitting units 301 of the light emitting layer 3 one-to-one, so that the light generated by each light emitting unit 301 can pass through the polarizing unit 5061 corresponding thereto.
The light emitting units 301 are respectively located in orthographic projections of the polarizing units 5061 on the light emitting layer 3, that is, each light emitting unit 301 on the light emitting layer 3 is disposed corresponding to one polarizing unit 5061 on the polarizing film layer 5. Specifically, each light emitting unit 301 is opposite to one polarization unit 5061 and has substantially the same shape. Therefore, the light generated by each light emitting unit 301 can be well transmitted through the polarizing unit 5061 opposite to the light emitting unit 301 and having substantially the same shape, so that the light transmittance of the display panel 100 is good. The shapes of the plurality of polarization units 5061 include, but are not limited to, rectangular, diamond, and oval.
Further, the substrate 1 may be a rigid substrate, such as a glass substrate or the like. The substrate 1 may also be a flexible substrate, such as a polyimide substrate, and the like, which is not limited in the present application.
In the display panel 100 provided by the embodiment of the application, the polarization film layer 5 is arranged on the encapsulation layer 4, the polarization film layer 5 can reduce the reflectivity of the display panel 100, and the absorption rate of the polarization film layer 5 to light is low, so that the transmittance of light is high, and further the brightness attenuation of the display panel 100 is reduced. In addition, the plurality of light emitting units 301 are located in the orthographic projection of the plurality of polarization units 5061 on the light emitting layer 3, so that the light generated by each light emitting unit 301 can better transmit through the corresponding polarization unit 5061, the light transmittance of the display panel 100 is improved, and the display performance of the display panel 100 is improved.
In some embodiments, the polarizing liquid crystal layer 506 includes a dichroic dye and a polymerizable liquid crystal.
In the embodiment of the present application, the polarizing liquid crystal layer 506 is made of dichroic dye and polymerizable liquid crystal. Wherein the dichroic dye is capable of absorbing light parallel to its absorption axis and transmitting light perpendicular to its absorption axis. Among them, the process of forming the polarized liquid crystal layer 506 on the polarized film substrate layer 510 may be: after the mixture of the dichroic dye and the polymerizable liquid crystal is coated on the polarizing film substrate layer 510, the mixture of the dichroic dye and the polymerizable liquid crystal may be cured by ultraviolet irradiation to form the polarizing liquid crystal layer 506. In addition, the polarizing liquid crystal layer 506 may be formed by linking a dichroic dye to a polymerizable liquid crystal by branch grafting.
In the embodiment of the present application, as shown in fig. 2, the polarizing film layer 5 is covered on the encapsulation layer 4 of the display panel 100, and the polarizing film layer 5 can reduce the reflectivity of the display panel 100 under strong light. The polarizing film layer 5 has a low light absorption rate, so that the transmittance of light is high, and the display performance of the display panel 100 is improved.
In some embodiments, as shown in fig. 2, the plurality of light emitting units 301 includes a plurality of red light emitting units, a plurality of green light emitting units, and a plurality of blue light emitting units, and the plurality of polarization units 5061 includes a plurality of first polarization units disposed corresponding to the plurality of red light emitting units, a plurality of second polarization units disposed corresponding to the plurality of green light emitting units, and a plurality of third polarization units disposed corresponding to the plurality of blue light emitting units.
The dichroic dye comprises red dye, green dye and blue dye, the proportion of the red dye in the first polarizing unit is smaller than that of the blue dye and the green dye, the proportion of the green dye in the second polarizing unit is smaller than that of the blue dye and the red dye, and the proportion of the blue dye in the third polarizing unit is smaller than that of the red dye and the green dye.
In the embodiment, the colors of the plurality of light emitting units 301 may include three primary colors of red, green and blue, and correspondingly, the colors of the dichroic dyes in the plurality of polarization units 5061 may also include three primary colors of red, green and blue. Specifically, the plurality of light emitting units 301 may include a plurality of red light emitting units, a plurality of blue light emitting units, and a plurality of green light emitting units, and the plurality of polarization units include a plurality of first polarization units, a plurality of second polarization units, and a plurality of third polarization units.
The ratio of the red dye in the first polarization units is smaller than the ratio of the blue dye to the green dye, and the first polarization units and the red light emitting units are arranged correspondingly, that is, the red light emitting units are located in the orthographic projection of the first polarization units on the light emitting layer 3. Because the red dye can reflect red light, the proportion of the red dye in the plurality of first polarizing units is low, so that the whole dichroic dye in the plurality of first polarizing units has small reflection to the red light, the red light emitted by the plurality of red light emitting units can better and more penetrate through the plurality of first polarizing units or the polarizing liquid crystal layer 506, and the display performance of the display device is further improved. In addition, the ratio of the blue dye to the green dye in the first polarization units is similar or equal, and the ratio can be set according to actual requirements, which is not limited in this application.
Correspondingly, the proportion of the green dye in the plurality of second polarization units is smaller than the proportion of the blue dye and the red dye, and the plurality of second polarization units are arranged corresponding to the plurality of green light emitting units, that is, the plurality of green light emitting units are located in the orthographic projection of the plurality of second polarization units on the light emitting layer 3. Because the green dye can reflect the green light, the proportion of the green dye in the second polarizing units is low, and the reflection of the whole dichroic dye in the second polarizing units to the green light is small, so that the green light emitted by the green light emitting units can better penetrate through the second polarizing units or the polarizing liquid crystal layer 506 more, and the display performance of the display device is improved. In addition, the proportions of the blue dye and the red dye in the plurality of second polarization units are similar or equal, and may be set according to actual requirements, which is not limited in this application.
Correspondingly, the ratio of the blue dye in the third polarization units is smaller than the ratio of the red dye to the green dye, and the third polarization units and the blue light emitting units are correspondingly arranged, that is, the blue light emitting units are located in the orthographic projections of the third polarization units on the light emitting layer 3. Because the blue dye can reflect blue light, the proportion of the blue dye in the third polarizing units is low, and the reflection of the whole dichroic dye in the third polarizing units to the blue light is small, so that the blue light emitted by the blue light emitting units can better and more penetrate through the third polarizing units or the polarizing liquid crystal layer 506, and the display performance of the display device is further improved. In addition, the proportions of the red dye and the green dye in the plurality of third polarization units are similar or equal, and may be set according to actual requirements, which is not limited in this application.
In the embodiment of the present application, the color, shape, and position of each polarization unit 5061 correspond to one light emitting unit 301 located below the polarization unit 5061, so that light of a specific color generated by the light emitting unit 301 can well pass through the polarization unit 5061 corresponding to the position, color, and shape of the light emitting unit, and the light transmittance of the display panel 100 is better, thereby improving the light transmittance of the display panel 100 and improving the display performance of the display panel 100.
In some embodiments, as shown in fig. 2 and 3, the polarizing film substrate layer 510 includes a first light alignment film layer 501, a first phase difference film layer 502, and a second light alignment film layer 503, which are disposed between the encapsulation layer 4 and the polarizing liquid crystal layer 506 and distributed in sequence along a direction away from the encapsulation layer 4.
In the embodiment of the present application, as shown in fig. 3, the first photo-alignment layer 501 and the second photo-alignment layer 503 are both used to align the liquid crystal above them. In addition, each of the first and second photo- alignment layers 501 and 503 may be a PI (Polyimide) film. The first phase difference film layer 502 is used for converting linearly polarized light passing through the first phase difference film layer 502, so that the linearly polarized light is converted into elliptically polarized light or circularly polarized light. The first retardation film 502 may be a quarter-wave retardation film. The wave may be a light wave or other waves meeting the requirements, and the present application does not limit the wave. The polarizing film substrate layer 510 in the embodiment of the present application has a simple structure, a simple manufacturing method, and a low cost, and can reduce the thickness of the polarizing film substrate layer 510. In addition, when the polarizing film base layer 510 includes the first light alignment film layer 501, the first phase difference film layer 502, and the second light alignment film layer 503, the color of the polarizing film base layer 510 may be blue, thereby improving the display color of the display panel 100 including the polarizing film layer 5 and enhancing the display effect of the display panel 100.
Specifically, the process of forming the polarized liquid crystal layer 506 on the second photo-alignment film layer 503 may be: after the mixture of the dichroic dye and the polymerizable liquid crystal is coated on the second photo-alignment film layer 503, the mixture of the dichroic dye and the polymerizable liquid crystal may be cured by ultraviolet irradiation to form the polarizing liquid crystal layer 506.
In some embodiments, as shown in fig. 2 and 4, the polarizing film substrate layer 510 further includes a second phase difference film layer 504 and a third light alignment film layer 505 disposed between the second light alignment film layer 503 and the polarizing liquid crystal layer 506 and sequentially distributed in a direction away from the second light alignment film layer 503.
In the embodiment of the present application, as shown in fig. 4, the third photo-alignment film layer 505 is used to align the liquid crystal thereon. In addition, the third photo-alignment film layer 505 may be a PI (Polyimide) film. The second phase difference film 504 is used for converting linearly polarized light passing through the second phase difference film 504, so that the linearly polarized light is converted into elliptically polarized light or circularly polarized light. The second retardation film 504 may be a half-wavelength retardation film. In contrast, the wave may be a light wave, which is provided corresponding to the above-mentioned wave type of the first retardation film layer 502, or may be another wave that meets the requirement, which is not limited in the present application. In the polarizing film substrate layer 510, the second phase difference film layer 504 and the third light alignment film layer 505 are added, so that the color of the polarizing film substrate layer 510 changes from blue to purple, for example, thereby improving the display color of the display panel 100 including the polarizing film layer 5 and further enhancing the display effect of the display panel 100. The structure and the hue of the polarizing film base layer 510 may be adjusted according to actual needs, and the present application is not limited thereto.
Among them, the process of forming the polarized liquid crystal layer 506 on the third photo-alignment film layer 505 may be: after the mixture of the dichroic dye and the polymerizable liquid crystal is coated on the third photo-alignment film layer 505, the mixture of the dichroic dye and the polymerizable liquid crystal may be cured by ultraviolet irradiation to form the polarizing liquid crystal layer 506.
In some embodiments, as shown in fig. 2 and fig. 5, the display panel 100 further includes a thin film transistor array layer 6, the thin film transistor array layer 6 is located on a side of the light emitting layer 3 away from the encapsulation layer 4, and the thin film transistor array layer 6 includes a plurality of driving circuits disposed corresponding to the plurality of light emitting units 301.
In the embodiment of the present application, as shown in fig. 5, the thin film transistor array layer 6 has a plurality of thin film transistor devices. The thin film transistor array layer 6 may be a top gate structure, and the thin film transistor array layer 6 may also be a bottom gate structure or a dual gate structure, which is not specifically limited in this embodiment of the present application. As shown in fig. 5, taking the thin film transistor array layer 6 as a bottom gate structure as an example, the thin film transistor array layer 6 includes a buffer layer 601, an active layer 602, a first gate insulating layer 603, a first metal layer 604, a second gate insulating layer 605, an interlayer insulating layer 606, a second metal layer 607, and a passivation layer 608, which are stacked, wherein the first metal layer 604 includes a gate 6041, the second metal layer 607 includes a source 6071 and a drain 6072, and the source 6071 and the drain 6072 are connected to the active layer 602 through a via hole.
In some embodiments, the light emitting layer 3 includes an anode layer 3011, an organic light emitting layer 3012 and a cathode layer 3013 on one side of the substrate 1 and distributed in sequence in a direction away from the substrate 1.
In the embodiment of the present invention, as shown in fig. 2 and fig. 5, the anode layer 3011 and the organic light emitting layer 3012 of each light emitting unit 301 are separated by the pixel defining layer 2, and the cathode layers 3013 of the light emitting units 301 or the cathode layers 3013 of some light emitting units 301 may be connected together to have an equal potential. The organic light emitting layer 3012 may be formed by evaporation, and the organic light emitting layer 3012 may include a hole transport layer and an electron transport layer stacked in layers.
Further, the encapsulation layer 4 may be a thin film encapsulation layer. As shown in fig. 5, the encapsulation layer 4 may include a first inorganic encapsulation layer 401, an organic encapsulation layer 402, and a second inorganic encapsulation layer 403 sequentially disposed in a direction away from the light emitting layer 33, thereby improving the encapsulation effect of the display panel 100 by arranging a multi-layer encapsulation.
The embodiment of the present application further provides a manufacturing method of the display panel 100, as shown in fig. 6, the manufacturing method includes the following steps.
In step S701, a light emitting layer is formed on one side of a substrate, and the light emitting layer includes a plurality of light emitting units distributed at intervals.
Step S702 is to package one side of the substrate base board to form a package layer.
In step S703, a polarizing film base layer is formed on one side of the encapsulation layer.
Step S704, a polarized liquid crystal layer is formed on a side of the polarized film substrate layer away from the package layer, the polarized liquid crystal layer includes a plurality of polarized units covering the plurality of hollow areas, the plurality of light emitting units are located in orthographic projections of the plurality of polarized units on the light emitting layers, and the polarized film layer includes the polarized film substrate layer and the polarized liquid crystal layer.
In the display panel 100 manufactured by the manufacturing method of the display panel 100 provided in the embodiment of the present application, the encapsulation layer 4 covers the light emitting layer 3 to encapsulate the light emitting layer 3. The polarizing film layer 5 and the black matrix layer 7 are located on the encapsulation layer 4, the black matrix layer 7 has a plurality of hollow areas arranged at intervals, the polarizing film layer 5 has a plurality of polarizing units 5061, and the plurality of polarizing units 5061 cover the plurality of hollow areas, respectively. The plurality of polarizing units 5061 are respectively corresponding to the plurality of light emitting units 301 of the light emitting layer 3 one by one, so that the light generated by each light emitting unit 301 can better transmit through the corresponding polarizing unit 5061, and the light transmittance of the display panel 100 is improved. In the display panel 100 manufactured by the above method, the polarizing film layer 5 is provided on the encapsulation layer 4, the polarizing film layer 5 can reduce the reflectance of the display panel 100, and the polarizing film layer 5 has low light absorption rate and high light transmittance, thereby improving the display performance of the display panel 100.
In some embodiments, step S703 may be subdivided into the following steps.
Step one, forming a first optical alignment film layer on one side of the packaging layer far away from the substrate base plate.
And step two, forming a first phase difference film layer on one side of the first optical alignment film layer, which is far away from the packaging layer.
And step three, forming a second light alignment film layer on one side of the first phase difference film layer, which is far away from the first light alignment film layer.
And fourthly, forming a second phase difference film layer on one side, far away from the first phase difference film layer, of the second light alignment film layer.
And fifthly, forming a third light alignment film layer on one side of the second phase difference film layer far away from the second light alignment film layer.
And step six, forming a polarized liquid crystal layer on one side of the third light alignment film layer far away from the second phase difference film layer.
In the present embodiment, for convenience of description, the first light alignment film layer 501, the second light alignment film layer 503, and the third light alignment film layer 505 are collectively referred to as a light alignment film layer, and the first retardation film layer 502 and the second retardation film layer 504 are collectively referred to as a retardation film layer. Wherein the process of forming each photo-alignment film layer is as follows: coating a photo-alignment film layer, curing the photo-alignment film layer, and irradiating the photo-alignment film layer with ultraviolet rays to make the photo-alignment film layer have a specific alignment angle. The curing temperature of the photo-alignment film layer may range from 85 ℃ to 140 ℃, thereby protecting the light emitting layer 3 in the display panel 100. The process of forming each phase difference film layer is as follows: a polymerizable liquid crystal having a retardation of a specific wavelength is applied to the underlying photo-alignment film layer, and then cured by irradiation with ultraviolet rays to form a retardation film layer. The process for making the polarized liquid crystal layer 506 is: a mixture of a dichroic dye and a polymerizable liquid crystal is applied to the second photo-alignment layer 503 or the third photo-alignment layer 505, and the mixture of the dichroic dye and the polymerizable liquid crystal is cured by ultraviolet irradiation to form the polarizing liquid crystal layer 506. In addition, the polarizing liquid crystal layer 506 may be formed by linking a dichroic dye to a polymerizable liquid crystal by branch grafting.
In the embodiment of the present application, the polarizing film layer 5 covers the encapsulation layer 4 of the display panel 100, and the polarizing film layer 5 can reduce the reflectivity of the display panel 100 under strong light. The polarizing film layer 5 has a low light absorption rate and a high light transmittance, and can improve the display performance of the display panel 100.
The embodiment of the present application further provides a display device, which includes the display panel 100 described above. In the embodiment of the present application, the display device includes, but is not limited to, a mobile phone, a tablet computer, a display, a television, a picture screen, an advertisement screen, electronic paper, and the like.
The display device provided in the embodiment of the present application includes the display panel 100 described above, and therefore, the display device in the embodiment of the present application has all the advantages of the display panel 100 described above.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.
Claims (10)
1. A display panel, comprising:
a substrate base plate;
the light-emitting layer is positioned on one side of the substrate and comprises a plurality of light-emitting units which are distributed at intervals;
an encapsulation layer covering the light emitting layer;
the black matrix layer is positioned on one side, far away from the substrate base plate, of the packaging layer and comprises a plurality of hollow areas arranged at intervals;
the polarization film layer is located the encapsulation layer keep away from one side of substrate base plate, the polarization film layer includes along keeping away from polarization film basal layer and the polarized liquid layer that the direction of substrate base plate set gradually, the polarized liquid layer is including covering a plurality of polarization units of a plurality of hollow areas, a plurality of luminescence units are located a plurality of polarization units are in orthographic projection on the luminescent layer.
2. The display panel of claim 1, wherein the polarizing liquid crystal layer comprises a dichroic dye and a polymerizable liquid crystal.
3. The display panel according to claim 2, wherein the plurality of light-emitting units include a plurality of red light-emitting units, a plurality of green light-emitting units, and a plurality of blue light-emitting units, and the plurality of polarization units include a plurality of first polarization units provided corresponding to the plurality of red light-emitting units, a plurality of second polarization units provided corresponding to the plurality of green light-emitting units, and a plurality of third polarization units provided corresponding to the plurality of blue light-emitting units;
the dichroic dye comprises a red dye, a green dye and a blue dye, the proportion of the red dye in the first polarizing unit is smaller than the proportion of the blue dye and the green dye, the proportion of the green dye in the second polarizing unit is smaller than the proportion of the blue dye and the red dye, and the proportion of the blue dye in the third polarizing unit is smaller than the proportion of the red dye and the green dye.
4. The display panel of claim 1, wherein the polarizing film substrate layer comprises a first light alignment film layer, a first phase difference film layer, and a second light alignment film layer sequentially disposed between the encapsulation layer and the polarizing liquid crystal layer and along a direction away from the encapsulation layer.
5. The display panel of claim 4, wherein the polarizing film substrate layer further comprises a second phase difference film layer and a third light alignment film layer disposed between the second light alignment film layer and the polarizing liquid crystal layer and sequentially distributed in a direction away from the second light alignment film layer.
6. The display panel according to claim 1, further comprising a thin film transistor array layer on a side of the light emitting layer away from the encapsulation layer, the thin film transistor array layer including a plurality of driving circuits provided corresponding to the plurality of light emitting cells.
7. The display panel according to claim 1, wherein the light emitting layer comprises an anode layer, an organic light emitting layer, and a cathode layer on one side of the substrate and sequentially arranged in a direction away from the substrate.
8. A method for manufacturing a display panel is characterized by comprising the following steps:
forming a light emitting layer on one side of a substrate, wherein the light emitting layer comprises a plurality of light emitting units distributed at intervals;
packaging one side of the substrate base plate to form a packaging layer;
forming a polarizing film base layer on one side of the encapsulation layer;
and forming a polarized liquid crystal layer on one side of the polarized film substrate layer, which is far away from the packaging layer, wherein the polarized liquid crystal layer comprises a plurality of polarized units covering a plurality of hollow areas, the plurality of light-emitting units are positioned in orthographic projections of the plurality of polarized units on the light-emitting layers, and the polarized film layer comprises the polarized film substrate layer and the polarized liquid crystal layer.
9. The method of claim 8, wherein the step of forming a polarizing film substrate layer on one side of the encapsulation layer comprises:
forming a first light alignment film layer on one side of the packaging layer far away from the substrate base plate;
forming a first phase difference film layer on one side, far away from the packaging layer, of the first light alignment film layer;
forming a second light alignment film layer on one side of the first phase difference film layer far away from the first light alignment film layer;
forming a second phase difference film layer on one side, far away from the first phase difference film layer, of the second light alignment film layer;
and forming a third light alignment film layer on one side of the second phase difference film layer far away from the second light alignment film layer.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
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