CN113410409A - Display panel, display device and manufacturing method of display panel - Google Patents
Display panel, display device and manufacturing method of display panel Download PDFInfo
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- CN113410409A CN113410409A CN202110647903.9A CN202110647903A CN113410409A CN 113410409 A CN113410409 A CN 113410409A CN 202110647903 A CN202110647903 A CN 202110647903A CN 113410409 A CN113410409 A CN 113410409A
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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
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- H—ELECTRICITY
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- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
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- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The embodiment of the application provides a display panel, a display device and a manufacturing method of the display panel. The pixel defining layer and the light emitting layer are positioned on one side of the substrate, and the light emitting layer comprises a plurality of light emitting units which are distributed at intervals; the packaging layer covers the pixel defining layer and the light emitting layer; the polarizing film layer is positioned on one side of the packaging layer far away from the substrate base plate and is provided with a plurality of hollow areas arranged at intervals; the color film layer is located on one side, far away from the substrate base plate, of the packaging layer and comprises a plurality of color blocking blocks covering the hollow areas, and the light emitting units are located in orthographic projections of the color blocking blocks on the light emitting layer respectively.
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. The COE (Color Filter on Encapsulation Layer) is to form a Color film on a film package of an organic light emitting display panel to reduce the reflectivity of the display panel under strong light. In the related art, the luminance attenuation of the display panel with the COE structure is large, and therefore how to reduce the luminance attenuation of the display panel is an urgent technical problem to be solved by those skilled in the art.
Disclosure of Invention
An object of the present invention is to provide a display panel, a display device and a method for manufacturing the display panel, so as to reduce the brightness attenuation of the display panel. The specific technical scheme is as follows:
an aspect of an embodiment of the present application provides a display panel, including:
a substrate base plate;
the pixel defining layer and the light emitting layer are positioned on one side of the substrate, and the light emitting layer comprises a plurality of light emitting units which are distributed at intervals;
an encapsulation layer covering the pixel defining layer and the light emitting layer;
the polarizing film layer is positioned on one side, far away from the substrate base plate, of the packaging layer and is provided with a plurality of hollow areas arranged at intervals;
the color film layer is positioned on one side, far away from the substrate base plate, of the packaging layer and comprises a plurality of color blocking blocks covering the hollow areas, and the light emitting units are respectively positioned in orthographic projections of the color blocking blocks on the light emitting layer.
In some embodiments, the polarizing film layer includes a first optical alignment film layer, a first retardation film layer, a second optical alignment film layer, a second retardation film layer, a third optical alignment film layer, and a guest-host liquid crystal layer, which are sequentially disposed on one side of the encapsulation layer and distributed along a direction away from the encapsulation layer.
In some embodiments, the guest-host liquid crystal layer is made of dichroic dyes and a polymerizable liquid crystal.
In some embodiments, the light emitting units include a plurality of red light emitting units, blue light emitting units, and green light emitting units, the color blocks include a plurality of red blocks, blue blocks, and green blocks, the red light emitting units are respectively located in orthographic projections of the red blocks on the light emitting layer, the blue light emitting units are respectively located in orthographic projections of the blue blocks on the light emitting layer, and the green light emitting units are respectively located in orthographic projections of the green blocks on the light emitting layer.
In some embodiments, the display panel further comprises:
the thin film transistor array layer is positioned on one side, far away from the packaging layer, of the light emitting layer.
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.
A second aspect of an embodiment of the present application provides a manufacturing method of a display panel, where the manufacturing method includes:
forming a pixel defining layer and 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 polarization film layer on one side of the packaging layer, which is far away from the substrate base plate, wherein the polarization film layer is provided with a plurality of hollow areas which are arranged at intervals;
and forming a color film layer on one side of the packaging layer, which is far away from the substrate base plate, wherein the color film layer comprises a plurality of color resist blocks covering the plurality of hollow areas, and the plurality of light-emitting units are respectively positioned in orthographic projections of the plurality of color resist blocks on the light-emitting layer.
In some embodiments, the step of forming a polarizing film layer on a side of the encapsulation layer away from the substrate includes:
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;
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 forming a guest-host liquid crystal layer on one side of the third light alignment film layer far away from the second phase difference film layer.
A third aspect of the present embodiments provides a display device, comprising any one of the display panels described 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, a pixel definition layer, a light emitting layer, an encapsulation layer, a polarization film layer and a color film layer. The light-emitting layer is provided with a plurality of light-emitting units distributed at intervals. The packaging layer covers the pixel defining layer and the light-emitting layer to package the pixel defining layer and the light-emitting layer. The polarization film layer and the color film layer are located on the packaging layer, the polarization film layer is provided with a plurality of hollow areas which are arranged at intervals, the color film layer is provided with a plurality of color blocking blocks, and the plurality of color blocking blocks cover the plurality of hollow areas respectively. And the color resistance blocks are respectively in one-to-one correspondence with the light-emitting units of the light-emitting layer, so that light generated by each light-emitting unit can better penetrate through the color resistance block corresponding to the light-emitting unit, and the light transmittance of the display panel is improved. In the display panel that this application embodiment provided, be provided with polarization rete and various rete on the encapsulated layer, the reflectivity of display panel can be reduced to the polarization rete, and the absorption rate of polarization rete to light is lower and the transmissivity of light is higher to display panel's luminance decay has been reduced.
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.
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 graph showing a simulation of luminance decay of a display panel with a COE structure and a display panel with a POL structure;
FIG. 2 is a block diagram of a display panel according to some embodiments of the present application;
FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 2;
FIG. 4 is an enlarged view of area B of FIG. 3;
FIG. 5 is a graph of luminance decay simulation of a display panel and a display panel with a POL structure according to some embodiments of the present application;
FIG. 6 is a block diagram of a polarizing film layer in some embodiments of the present application;
FIG. 7 is a flowchart of a method for fabricating a display panel according to some embodiments of the present disclosure.
Reference numerals: 100-a display panel; 1-a substrate base plate; 2-a pixel defining layer; 3-a light emitting layer; 301-a light emitting unit; 3011-anode layer; 3012-an organic light-emitting layer; 3013-a cathode layer; 4-an encapsulation layer; 401-a first inorganic encapsulation layer; 402-organic encapsulation layer; 403-a second inorganic encapsulation layer; 5-a polarizing film layer; 501-a first photo-alignment film layer; 502-a first retardation film layer; 503-a second light directing film layer; 504-second phase difference film layer; 505-a third light directing film layer; 506-guest-host liquid crystal layer; 6-a color film layer; 601-color block; 7-thin film transistor array layer; 701-a buffer layer; 702-an active layer; 703-a first gate insulation layer; 704 — a first metal layer; 7041-gate; 705-a second gate insulation layer; 706-interlayer insulating layer; 707-a second metal layer; 7071-source; 7072-drain electrode; 708-passivation layer.
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.
In the related art, in order to reduce the reflectivity of the display panel under strong light, a Color on Encapsulation Layer (COE) structure is covered on the display panel, and the COE structure includes a Black Matrix (BM) and a Color film Layer on a film Encapsulation Layer of the display panel. Wherein, the color film layer comprises a plurality of color block blocks separated by BM. However, since the BM has a high light absorption, when the viewing angle of the display device with the display panel is larger than a specific angle, for example, 40 °, the brightness of the display panel is greatly attenuated due to the BM shielding. Specifically, comparing the luminance degradation of the display panel having the COE structure with the luminance degradation of the display panel having the POL (Polarizer) structure, as shown in fig. 1, when the viewing angle of the display device is greater than 40 °, the luminance degradation of the display panel having the COE structure is significantly greater than that of the display panel having the POL structure.
In order to reduce the brightness attenuation of the display panel, 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 display device, and the method for manufacturing the display panel provided in the embodiments of the present application will be described below with reference to the accompanying drawings. The display panel may be an electroluminescent display panel or a photoluminescent display panel. 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 Light-Emitting Diode). In case the display panel is a photoluminescent display panel, the photoluminescent display panel may be a quantum dot photoluminescent display panel.
As shown in fig. 2, 3 and 4, the display panel 100 includes a substrate 1, a pixel defining layer 2, a light emitting layer 3, an encapsulation layer 4, a polarizing film layer 5 and a color film layer 6. The pixel defining layer 2 and the light emitting layer 3 are located on one side of the substrate 1, and the light emitting layer 3 includes a plurality of light emitting units 301 distributed at intervals. The encapsulation layer 4 covers the pixel defining layer 2 and the light emitting layer 3. The polarization film layer 5 is located on one side of the packaging layer 4 far away from the substrate base plate 1, and the polarization film layer 5 is provided with a plurality of hollow areas arranged at intervals. The color film layer 6 is located on one side of the encapsulation layer 4 away from the substrate base plate 1, the color film layer 6 includes a plurality of color blocks 601 covering a plurality of hollow areas, and the plurality of light emitting units 301 are respectively located in orthographic projections of the plurality of color blocks 601 on the light emitting layer 3.
In the display panel 100 provided in the embodiment of the present application, the light emitting layer 3 has a plurality of light emitting units 301 distributed at intervals. The encapsulation layer 4 covers the pixel defining layer 2 and the light emitting layer 3 to encapsulate the pixel defining layer 2 and the light emitting layer 3. Polarization rete 5 and various rete 6 are located encapsulation layer 4, and polarization rete 5 has a plurality of hollow areas that the interval set up, and various rete 6 has a plurality of look and hinders piece 601, and a plurality of look hinder the piece 601 and cover a plurality of hollow areas respectively. The color resist blocks 601 respectively correspond to the light emitting units 301 of the light emitting layer 3 one by one, so that light generated by each light emitting unit 301 can better penetrate through the corresponding color resist block 601, and the light transmittance of the display panel 100 is improved. In the display panel 100 provided by the embodiment of the application, the polarization film layer 5 and the color film layer 6 are arranged on the encapsulation layer 4, the polarization film layer 5 can reduce the reflectivity of the display panel 100, and the polarization film layer 5 has low light absorption rate and high light transmittance, so that the brightness attenuation of the display panel 100 is reduced.
Specifically, as shown in fig. 5, fig. 5 is a graph comparing the brightness of the display panel 100 according to the embodiment of the present application with the brightness of the display panel having the POL structure. Wherein the abscissa is a viewing angle of a display device having a display panel in units, and the ordinate is a luminance decay ratio. As can be seen from fig. 5, the luminance attenuation value of the display panel 100 according to the embodiment of the present invention is substantially equal to the luminance attenuation value of the display panel having the POL structure, and thus the luminance attenuation of the display panel 100 according to the embodiment of the present invention is low.
In the embodiment of the present application, as shown in fig. 3, the pixel defining layer 2 is used to separate a plurality of light emitting units 301 in the light emitting layer 3. Specifically, the pixel defining layer 2 may form a plurality of sub-pixel regions by its own groove structure, and the plurality of organic light emitting units 301 are disposed in the plurality of sub-pixel regions.
In addition, the plurality of light emitting units 301 are respectively located in the orthographic projection of the plurality of color blocks 601 on the light emitting layer 3, that is, each light emitting unit 301 on the light emitting layer 3 corresponds to one color block 601 on the color film layer 6. Specifically, each light emitting unit 301 has the same position, shape and color as one color blocking block 601, and based on this, light generated by each light emitting unit 301 can well pass through the color blocking block 601 having the same position, color and shape, so that the light transmittance of the display panel 100 is better. The shapes of the color blocks 601 include, but are not limited to, rectangular, diamond, and oval.
In some embodiments, 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 plurality of color blocking blocks 601 may also include three primary colors of red, green, and blue. Specifically, the light emitting units 301 include a plurality of red light emitting units, blue light emitting units and green light emitting units, the color blocking blocks 601 include a plurality of red blocking blocks, blue blocking blocks and green blocking blocks, the red light emitting units are respectively located in orthographic projections of the red blocking blocks on the light emitting layer, the blue light emitting units are respectively located in orthographic projections of the blue blocking blocks on the light emitting layer 3, and the green light emitting units are respectively located in orthographic projections of the green blocking blocks on the light emitting layer 3. That is, the color, shape and position of each color block 601 correspond to one light emitting unit 301 located below the color block 601, so that light of a specific color generated by the light emitting unit 301 can be well transmitted through the color block 601 with the same position, color and shape, and the light transmittance of the display panel 100 is good.
In some embodiments, as shown in fig. 6, the polarizing film layer 5 includes a first optical alignment film layer 501, a first retardation film layer 502, a second optical alignment film layer 503, a second retardation film layer 504, a third optical alignment film layer 505, and a guest-host liquid crystal layer 506, which are disposed on one side of the encapsulation layer 4 and distributed in sequence along a direction away from the encapsulation layer 4.
In the present embodiment, the first photo-alignment layer 501, the second photo-alignment layer 503 and the third photo-alignment layer 505 are all used to align the liquid crystal above them. Wherein the alignment angle of the first photo-alignment film layer 501 may be 75 °, the alignment angle of the second photo-alignment film layer 503 may be 15 °, and the alignment angle of the third photo-alignment film layer 505 may be 0 °. The alignment angles of the first photo-alignment layer 501, the second photo-alignment layer 503 and the third photo-alignment layer 505 can also be adjusted according to actual requirements, which is not specifically limited in the embodiments of the present application. Further, each of the first photo-alignment layer 501, the second photo-alignment layer 503, and the third photo-alignment layer 505 may be a PI (Polyimide) film.
The first phase difference film layer 502 and the second phase difference film layer 504 are used for converting linearly polarized light passing through the first phase difference film layer 502 and the second phase difference film layer 504, so that the linearly polarized light is converted into elliptically polarized light or circularly polarized light. The first phase difference film 502 may be a quarter-wave phase difference film, and the second phase difference film 504 may be a half-wave phase difference film. In addition, when the alignment angle of the first photo-alignment film layer 501 is 75 °, the slow axis of the first retardation film layer 502 located above the first photo-alignment film layer 501 is 75 ° by the first photo-alignment film layer 501. When the alignment angle of the second photo-alignment layer 503 is 15 °, the slow axis of the second phase difference layer 504 above the second photo-alignment layer 503 is 15 ° under the action of the second photo-alignment layer 503.
In some embodiments, guest-host liquid crystal layer 506 is made of dichroic dyes and a 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. The process of forming the guest-host 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 guest-host liquid crystal layer 506. Further, the guest-host liquid crystal layer 506 may be formed by linking a dichroic dye to a polymerizable liquid crystal by branch grafting. Wherein the absorption axis angle of the guest-host liquid crystal layer 506 is related to the alignment angle of the third photo-alignment film layer 505 located therebelow. Specifically, when the alignment angle of the third photo-alignment film layer 505 is 0 °, the absorption axis of the guest-host liquid crystal layer 506 may be 0 °.
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. In addition, the polarizing film layer 5 has low light absorption and high light transmittance, and thus reduces luminance degradation of the display panel 100. The structure of the polarizing film layer 5 may be other structures that are known in the prior art, and this is not particularly limited in the embodiment of the present application.
In some embodiments, as shown in fig. 2 and 3, the display panel 100 further includes a thin film transistor array layer 7, and the thin film transistor array layer 7 is located on a side of the light emitting layer 3 away from the encapsulation layer 4.
In the embodiment of the present application, the thin film transistor array layer 7 has a plurality of thin film transistor devices. The thin film transistor array layer 7 may be a top gate structure, and the thin film transistor array layer 7 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. 4, taking the thin film transistor array layer 7 as an example of a bottom gate structure, the thin film transistor array layer 7 includes a buffer layer 701, an active layer 702, a first gate insulating layer 703, a first metal layer 704, a second gate insulating layer 705, an interlayer insulating layer 706, a second metal layer 707, and a passivation layer 708, which are stacked, wherein the first metal layer 704 includes a gate 7041, the second metal layer 707 includes a source 7071 and a drain 7072, and the source 7071 and the drain 7072 are connected to the active layer 702 through a via.
In some embodiments, as shown in fig. 3 and 4, 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 sequentially distributed in a direction away from the substrate 1.
In the embodiment of the present invention, as shown in fig. 3 and 4, 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. 4, 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 3, thereby improving the encapsulation effect of the real panel by arranging the multi-layer encapsulation.
The embodiment of the present application further provides a manufacturing method of the display panel 100, as shown in fig. 7, the manufacturing method includes the following steps.
In step S701, a pixel defining layer 2 and a light emitting layer 3 are formed on one side of a substrate 1, and the light emitting layer 3 includes a plurality of light emitting units 301 distributed at intervals.
Step S702 is to package one side of the substrate 1 to form a package layer 4.
In step S703, a polarizing film layer 5 is formed on the side of the encapsulation layer 4 away from the substrate 1, where the polarizing film layer 5 has a plurality of hollow areas arranged at intervals.
In step S704, a color film layer 6 is formed on a side of the encapsulation layer 4 away from the substrate 1, the color film layer 6 includes a plurality of color blocks 601 covering a plurality of hollow areas, and the plurality of light emitting units 301 are respectively located in orthographic projections of the plurality of color blocks 601 on the light emitting layer 3.
In the display panel 100 manufactured by the manufacturing method of the display panel 100 according to the embodiment of the present application, the encapsulation layer 4 covers the pixel defining layer 2 and the light emitting layer 3 to encapsulate the pixel defining layer 2 and the light emitting layer 3. Polarization rete 5 and various rete 6 are located encapsulation layer 4, and polarization rete 5 has a plurality of hollow areas that the interval set up, and various rete 6 has a plurality of look and hinders piece 601, and a plurality of look hinder the piece 601 and cover a plurality of hollow areas respectively. The color resist blocks 601 respectively correspond to the light emitting units 301 of the light emitting layer 3 one by one, so that light generated by each light emitting unit 301 can better penetrate through the corresponding color resist block 601, 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 and the color film layer 6 are disposed on the encapsulation layer 4, the polarizing film layer 5 can reduce the reflectivity of the display panel 100, and the polarizing film layer 5 has low light absorption rate and high light transmittance, thereby reducing the luminance attenuation of the display panel 100.
In some embodiments, step S703 may be subdivided into the following steps.
In the first step, a first photo-alignment film 501 is formed on the side of the encapsulation layer 4 away from the substrate 1.
Step two, a first phase difference film layer 502 is formed on one side of the first optical alignment film layer 501 far away from the encapsulation layer 4.
And step three, forming a second light alignment film layer 503 on the side of the first phase difference film layer 502 far away from the first light alignment film layer 501.
Step four, forming a second phase difference film layer 504 on the side of the second light alignment film layer 503 away from the first phase difference film layer 502.
Step five, forming a third photo-alignment film layer 505 on the side of the second phase difference film layer 504 away from the second photo-alignment film layer 503.
And step six, forming a guest-host liquid crystal layer 506 on one side of the third light alignment film layer 505 far away from the second phase difference film layer 504.
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: the photo-alignment film layer is coated, then cured, and then irradiated with ultraviolet rays to 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 of fabricating the guest-host liquid crystal layer 506 is: a mixture of a dichroic dye and a polymerizable liquid crystal is applied to the third photo-alignment film layer 505, and the mixture of the dichroic dye and the polymerizable liquid crystal is cured by ultraviolet irradiation to form a guest-host liquid crystal layer 506. Further, the guest-host 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. In addition, the polarizing film layer 5 has low light absorption and high light transmittance, and thus reduces luminance degradation 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.
In the display device in the embodiment of the present application, since the display device has the display panel 100 in the embodiment of the present application, and since the display panel 100 has advantages such as low luminance degradation, the display device in the embodiment of the present application also has all the advantages of the display panel 100.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (9)
1. A display panel, comprising:
a substrate base plate;
the pixel defining layer and the light emitting layer are positioned on one side of the substrate, and the light emitting layer comprises a plurality of light emitting units which are distributed at intervals;
an encapsulation layer covering the pixel defining layer and the light emitting layer;
the polarizing film layer is positioned on one side, far away from the substrate base plate, of the packaging layer and is provided with a plurality of hollow areas arranged at intervals;
the color film layer is positioned on one side, far away from the substrate base plate, of the packaging layer and comprises a plurality of color blocking blocks covering the hollow areas, and the light emitting units are respectively positioned in orthographic projections of the color blocking blocks on the light emitting layer.
2. The display panel of claim 1, wherein the polarizing film layer comprises a first light alignment film layer, a first retardation film layer, a second light alignment film layer, a second retardation film layer, a third light alignment film layer and a guest host liquid crystal layer on one side of the encapsulation layer and sequentially distributed along a direction away from the encapsulation layer.
3. The display panel of claim 2, wherein the guest-host liquid crystal layer is made of dichroic dyes and a polymerizable liquid crystal.
4. The display panel of claim 1, wherein the light emitting units comprise a plurality of red light emitting units, blue light emitting units and green light emitting units, the color blocks comprise a plurality of red blocks, blue blocks and green blocks, the red light emitting units are respectively located in the orthographic projections of the red blocks on the light emitting layer, the blue light emitting units are respectively located in the orthographic projections of the blue blocks on the light emitting layer, and the green light emitting units are respectively located in the orthographic projections of the green blocks on the light emitting layer.
5. The display panel according to claim 1, characterized in that the display panel further comprises:
the thin film transistor array layer is positioned on one side, far away from the packaging layer, of the light emitting layer.
6. 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.
7. A method for manufacturing a display panel is characterized by comprising the following steps:
forming a pixel defining layer and 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 polarization film layer on one side of the packaging layer, which is far away from the substrate base plate, wherein the polarization film layer is provided with a plurality of hollow areas which are arranged at intervals;
and forming a color film layer on one side of the packaging layer, which is far away from the substrate base plate, wherein the color film layer comprises a plurality of color resist blocks covering the plurality of hollow areas, and the plurality of light-emitting units are respectively positioned in orthographic projections of the plurality of color resist blocks on the light-emitting layer.
8. The method of claim 7, wherein the step of forming a polarizing film layer on a side of the encapsulation layer away from the substrate 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;
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 forming a guest-host liquid crystal layer on one side of the third light alignment film layer far away from the second phase difference film layer.
9. A display device characterized by comprising the display panel according to any one of claims 1 to 6.
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| CN114420870A (en) * | 2022-01-19 | 2022-04-29 | 京东方科技集团股份有限公司 | Display panel, display device and manufacturing method of display panel |
| CN115167020A (en) * | 2022-07-27 | 2022-10-11 | 京东方科技集团股份有限公司 | Display panel and display device |
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| CN110471212A (en) * | 2019-08-29 | 2019-11-19 | 京东方科技集团股份有限公司 | A kind of display panel and display device |
| CN111584592A (en) * | 2020-05-22 | 2020-08-25 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof |
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| CN114420870B (en) * | 2022-01-19 | 2024-02-23 | 京东方科技集团股份有限公司 | Display panel, display device and manufacturing method of display panel |
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