CN111613653A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111613653A CN111613653A CN202010428669.6A CN202010428669A CN111613653A CN 111613653 A CN111613653 A CN 111613653A CN 202010428669 A CN202010428669 A CN 202010428669A CN 111613653 A CN111613653 A CN 111613653A
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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
- 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
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/854—Arrangements for extracting light from the devices comprising scattering means
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Abstract
The invention provides a display panel and a display device, wherein the display panel comprises: a substrate; the array functional layer is configured on the substrate; the OLED functional layer is configured on the array functional layer and comprises a plurality of blue OLED devices which are arranged in an array; the thin film packaging layer is configured on the OLED functional layer; and the color conversion layer is configured on the film packaging layer and comprises a plurality of red color conversion films, a plurality of green color conversion films and a plurality of transparent films, wherein the transparent films are respectively and correspondingly configured on the blue OLED device, and the transparent films comprise hybrid emulsion nano-particles capable of scattering light rays. The display panel realizes full-color display for the blue light OLED matched with the color conversion film, and the nano particles capable of scattering light are added in the color conversion film of the blue sub-pixel, so that the optical path and the scattering of the blue light are increased, the visual angle and the brightness of the blue light are improved, and the display effect is optimized.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and display equipment.
Background
At present, the manufacturing process of large-size OLED screens generally adopts a white light OLED technology, i.e., different luminescent organic materials are evaporated on the whole surface, white light emission is obtained by mixing, and full-color display is realized by utilizing a color film technology. The technology realizes large-area manufacturing of the OLED on the premise of keeping the evaporation process, but the color gamut and the color purity are relatively poor, the light-emitting utilization rate is poor, and the manufacturing steps are more complicated.
The blue light OLED is a feasible alternative to realize full-color display by matching with the color conversion film. Since only the blue OLED is actually emitting light, there is no concern about various problems caused by the difference in lifetime of each color, the manufacturing cost is cheaper than that of an OLED screen which is totally self-luminous, and a higher color gamut can be realized by virtue of the high color purity of the color conversion film. However, in this technology, red and green lights are generated by the color conversion film, and blue lights are directly emitted from the backlight, which often causes the viewing angle of the blue lights to be much smaller than that of the red and green lights, resulting in low brightness, dark image and poor display effect in side view.
Disclosure of Invention
To solve the above problem, in a first aspect, the present invention provides a display panel, including:
a substrate;
the array functional layer is configured on the substrate;
the OLED functional layer is configured on the array functional layer and comprises a plurality of blue OLED devices which are arranged in an array;
the thin film packaging layer is configured on the OLED functional layer; and
the color conversion layer is configured on the film packaging layer and comprises a plurality of red color conversion films, a plurality of green color conversion films and a plurality of transparent films, wherein the transparent films respectively and independently correspond to one of the plurality of blue light OLED devices, the transparent films comprise nanoparticles capable of scattering light, the nanoparticles are hybrid emulsion nanoparticles and comprise an inner core and an outer shell coating the inner core, the inner core is inorganic nanoparticles, and the outer shell is made of organic materials.
Further, the inorganic nanoparticles are selected from one of silicon dioxide, titanium dioxide, vanadium dioxide and zirconium dioxide.
Further, the organic material includes polyacrylate.
Further, the structure of the polyacrylate is represented by the following formula (1):
wherein x is an integer of 100-1000, and n is an integer of 1-20.
Further, the particle size of the hybrid emulsion nanoparticles ranges from 50 nanometers to 2000 nanometers.
Further, in the transparent film, the mass percentage of the nano particles is 0.1 wt% -5 wt%.
Further, the red color conversion thin film comprises a red perovskite material, and the green color conversion thin film comprises a green perovskite material.
Further, the display panel further includes a color filter layer disposed on the color conversion layer, where the color filter layer includes a plurality of red color resistors, a plurality of green color resistors, and a plurality of blue color resistors, the red color resistors are respectively disposed on the red color conversion films, the green color resistors are respectively disposed on the green color conversion films, and the blue color resistors are respectively disposed on the transparent films.
Furthermore, the display panel further includes an interface improvement layer disposed between the color conversion layer and the color filter layer, and the interface improvement layer is made of silicon dioxide.
In another aspect, the present invention also provides a display device comprising the display panel of any one of claims 1 to 9.
Has the advantages that: the invention provides a display panel and a display device, wherein the display panel comprises: a substrate; the array functional layer is configured on the substrate; the OLED functional layer is configured on the array functional layer and comprises a plurality of blue OLED devices which are arranged in an array; the thin film packaging layer is configured on the OLED functional layer; and the color conversion layer is configured on the film packaging layer and comprises a plurality of red color conversion films, a plurality of green color conversion films and a plurality of transparent films, and the transparent films are respectively and correspondingly configured on the blue OLED device, wherein the transparent films comprise nano particles capable of scattering light, the nano particles are hybrid emulsion nano particles and comprise an inner core and a shell for coating the inner core, the inner core is inorganic nano particles, and the shell is made of organic materials. The display panel realizes full-color display by matching the blue light OLED with the color conversion film, in the display mode, red and green light is generated by the color conversion film, and the blue light is directly emitted in a backlight mode, which often causes the visual angle of the blue light to be far smaller than that of the red and green light.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view illustrating a display panel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Referring to fig. 1, a cross-sectional structure of a display panel according to an embodiment of the present invention includes:
a first substrate 10;
the array functional layer 20 is configured on the first substrate 10, and includes thin film transistors arranged in an array, a pixel defining layer and the like, and is used as a driving switch of an upper-layer OLED device;
the OLED functional layer 30 is configured on the array functional layer and comprises a plurality of blue OLED devices 302 which are arranged in an array mode, and a first black matrix 301 is configured between the OLED devices 302;
a thin film encapsulation layer 40 disposed on the OLED functional layer 30; and
a color conversion layer 50 disposed on the thin film encapsulation layer 40, including a plurality of red light color conversion thin films 504, which are excited by itself to generate red light when receiving light emitted from the blue OLED device; a plurality of green color conversion films 503 which are excited by themselves to generate green light when receiving light emitted from the blue OLED device; and a plurality of transparent thin films 502, through which light emitted from the blue OLED device can be transmitted, are provided. The plurality of red light color conversion films 504, the plurality of green light color conversion films 503, and the plurality of transparent films 502 are further configured with a second black matrix 501 therebetween, and the plurality of red light color conversion films 504, the plurality of green light color conversion films 503, and the plurality of transparent films 502 are respectively and independently configured on a blue light OLED device to realize one-to-one correspondence, wherein the transparent films 502 include nanoparticles capable of scattering light, so that the optical path and the scattering of blue light are increased, and the viewing angle and the brightness of blue light are improved.
In this embodiment, the nanoparticle is a hybrid emulsion nanoparticle, and includes an inner core and an outer shell covering the inner core, where the inner core is an inorganic nanoparticle and the outer shell is an organic material.
Further, the inorganic nanoparticles are selected from inorganic nanoparticles with high scattering index such as silicon dioxide, titanium dioxide, vanadium dioxide and zirconium dioxide, and the organic material comprises polyacrylate for protecting the internal inorganic nanoparticles and preventing the inorganic nanoparticles from aggregating in an organic system to influence the scattering performance.
Wherein the structure of the polyacrylate can be represented by the following formula (1):
wherein x is an integer of 100-1000, and n is an integer of 1-20.
In some embodiments, the hybrid emulsion nanoparticles typically have a particle size of 50 nm to 2000 nm.
In some embodiments, the mass percentage of the nanoparticles in the transparent film is 0.1 wt% to 5 wt%, and the rest is usually a matrix material for uniformly dispersing the nanoparticles and forming the film, and the material of the matrix material is usually a transparent polymer.
In some embodiments, the red light color conversion thin film comprises a red perovskite material, and the green light color conversion thin film comprises a green perovskite material, and the luminescent light color conversion is realized by utilizing the photoluminescence characteristic of the perovskite material. Compared with quantum dot materials, the perovskite luminescent material is low in cost, complex synthesis and elaborate modification are not needed, and in addition, the perovskite also has higher color purity.
In some embodiments, the display panel further includes a color filter layer 70 disposed on the color conversion layer 50, the color filter layer 70 includes a plurality of red color resists 704, a plurality of green color resists 703, and a plurality of blue color resists 702, and a third black matrix 701 is disposed between the plurality of red color resists 704, the plurality of green color resists 703, and the plurality of blue color resists 702. The red color resists 704 are respectively and correspondingly disposed on the red color conversion films 504, the green color resists 703 are respectively and correspondingly disposed on the green color conversion films 503, and the blue color resists 702 are respectively and correspondingly disposed on the transparent films 502, so as to prevent the blue light that is not absorbed by the red color conversion films 504 and the green color conversion films 503 from being projected, and further optimize the display effect.
In some embodiments, the display panel further includes an interface improvement layer 60 disposed between the color conversion layer 50 and the color filter film layer 70, and the material of the interface improvement layer includes silicon dioxide.
In general, the array functional layer 20, the OLED functional layer 30 and the thin film encapsulation layer 40 are sequentially formed on the first substrate 10, the color filter layer 70, the interface improvement layer 60 and the color conversion layer 50 are sequentially formed on the second substrate 80, and the first substrate 10 and the second substrate 80 are aligned and bonded to each other through the frame 90 to form the display panel.
In addition, only the above structure is described in the above display panel embodiment, and it is understood that, in addition to the above structure, the display panel according to the embodiment of the present invention may further include any other necessary structure as needed, and the specific structure is not limited herein.
In another embodiment of the present invention, a display device includes the foregoing display panel, and the display device includes, but is not limited to, a mobile phone, a tablet computer, a television, a vehicle-mounted display, an intelligent wristwatch, and a VR device, and the present invention is not limited thereto.
The display panel and the display device provided by the embodiment of the present invention are described in detail above, and the principle and the embodiment of the present invention are explained in the present document by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A display panel, comprising:
a substrate;
the array functional layer is configured on the substrate;
the OLED functional layer is configured on the array functional layer and comprises a plurality of blue OLED devices which are arranged in an array;
the thin film packaging layer is configured on the OLED functional layer; and
the color conversion layer is configured on the film packaging layer and comprises a plurality of red color conversion films, a plurality of green color conversion films and a plurality of transparent films, wherein the transparent films respectively and independently correspond to one of the plurality of blue light OLED devices, the transparent films comprise nanoparticles capable of scattering light, the nanoparticles are hybrid emulsion nanoparticles and comprise an inner core and an outer shell coating the inner core, the inner core is inorganic nanoparticles, and the outer shell is made of organic materials.
2. The display panel of claim 1, wherein the inorganic nanoparticles are selected from one of silicon dioxide, titanium dioxide, vanadium dioxide, and zirconium dioxide.
3. The display panel of claim 1, wherein the organic material comprises a polyacrylate.
4. The display panel according to claim 3, wherein the structure of the polyacrylate is represented by the following formula (1):
wherein x is an integer of 100-1000, and n is an integer of 1-20.
5. The display panel of claim 1, wherein the hybrid emulsion nanoparticles have a particle size in the range of 50 nm to 2000 nm.
6. The display panel according to claim 1, wherein the nanoparticle is contained in the transparent film in an amount of 0.1 wt% to 5 wt%.
7. The display panel of claim 1, wherein the red color conversion thin film includes a red perovskite material therein and the green color conversion thin film includes a green perovskite material therein.
8. The display panel of claim 1, wherein the display panel further comprises a color filter layer disposed on the color conversion layer, the color filter layer comprises a plurality of red color resists, a plurality of green color resists, and a plurality of blue color resists, the plurality of red color resists are respectively disposed on the plurality of red color conversion films, the plurality of green color resists are respectively disposed on the plurality of green color conversion films, and the plurality of blue color resists are respectively disposed on the plurality of transparent films.
9. The display panel of claim 8, wherein the display panel further comprises an interface improvement layer disposed between the color conversion layer and the color filter layer, and a material of the interface improvement layer comprises silicon dioxide.
10. A display device characterized in that it comprises a display panel according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010428669.6A CN111613653B (en) | 2020-05-20 | 2020-05-20 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010428669.6A CN111613653B (en) | 2020-05-20 | 2020-05-20 | Display panel and display device |
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| CN111613653A true CN111613653A (en) | 2020-09-01 |
| CN111613653B CN111613653B (en) | 2023-08-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112310177A (en) * | 2020-10-20 | 2021-02-02 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN113113455A (en) * | 2021-03-31 | 2021-07-13 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and display device |
| CN113193101A (en) * | 2021-04-07 | 2021-07-30 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method of barrier type blue light emitting device display |
| CN114497015A (en) * | 2021-12-15 | 2022-05-13 | 湖北长江新型显示产业创新中心有限公司 | Display panel, preparation method thereof and display device |
| CN115851039A (en) * | 2022-10-18 | 2023-03-28 | 京东方科技集团股份有限公司 | Scattering particles and ink |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112310177A (en) * | 2020-10-20 | 2021-02-02 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN113113455A (en) * | 2021-03-31 | 2021-07-13 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and display device |
| CN113193101A (en) * | 2021-04-07 | 2021-07-30 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method of barrier type blue light emitting device display |
| CN114497015A (en) * | 2021-12-15 | 2022-05-13 | 湖北长江新型显示产业创新中心有限公司 | Display panel, preparation method thereof and display device |
| CN115851039A (en) * | 2022-10-18 | 2023-03-28 | 京东方科技集团股份有限公司 | Scattering particles and ink |
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| CN111613653B (en) | 2023-08-22 |
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