CN108933163B - Display panel, display device and preparation method of display panel - Google Patents
Display panel, display device and preparation method of display panel Download PDFInfo
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- CN108933163B CN108933163B CN201810942750.9A CN201810942750A CN108933163B CN 108933163 B CN108933163 B CN 108933163B CN 201810942750 A CN201810942750 A CN 201810942750A CN 108933163 B CN108933163 B CN 108933163B
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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
- H10K50/84—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
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Abstract
The invention provides a display panel, a display device and a preparation method of the display panel, wherein the display panel comprises: the display device comprises a first substrate and a second substrate which are oppositely arranged, wherein filling adhesive is filled in a gap between the first substrate and the second substrate, and particles with anisotropic refractive index are doped in the filling adhesive; wherein the refractive index of the refractive index anisotropic particles in a direction perpendicular to the first and second substrates is greater than the refractive index in a direction parallel to the first and second substrates. According to the display panel provided by the embodiment of the invention, the filling adhesive between the first substrate and the second substrate is doped with the particles with anisotropic refractive index, so that the filling adhesive can be used for filling the pores between the first substrate and the second substrate and preventing the display panel from having color difference under different viewing angles, and meanwhile, the preparation process of the display panel in the embodiment of the invention is simple.
Description
Technical Field
The invention relates to the technical field of liquid crystal display screens, in particular to a display panel, a current device and a preparation method of the display panel.
Background
In the liquid crystal display industry, an OLED (Organic Light-Emitting Diode) device has become a next generation display technology with great competitiveness and development prospect due to a series of advantages of full solid state, high brightness, full viewing angle, fast response speed, flexible display and the like.
In the prior art, the color cast is optimized to change along with the visual angle by adjusting the structure of the device, but the process of optimizing the color cast by adjusting the structure to change along with the visual angle is complex and difficult.
Disclosure of Invention
The invention provides a display panel, a current device and a preparation method of the display panel, and aims to solve the problem that the current display screen has chromatic aberration at different angles.
In order to solve the above problems, the present invention discloses a display panel, which includes a first substrate and a second substrate that are oppositely disposed, wherein a gap between the first substrate and the second substrate is filled with a filling adhesive, and the filling adhesive is doped with particles having refractive index anisotropy;
wherein the refractive index of the refractive index anisotropic particles in a direction perpendicular to the first and second substrates is greater than the refractive index in a direction parallel to the first and second substrates.
Preferably, the refractive index of the refractive index anisotropic particles is largest in a direction perpendicular to the first substrate and the second substrate.
Preferably, the second substrate includes a black matrix layer and a color film layer; wherein the color film layer is doped with the particles with anisotropic refractive index.
Preferably, the color film layer includes a plurality of pixel units, and different kinds of pixel units are doped with particles with different refractive index anisotropies.
Preferably, the particles having anisotropic refractive index are perovskite crystals.
Preferably, the size of the crystals is 20nm to 50 nm.
Preferably, the mass ratio of the organic glue to the doped refractive index anisotropic particles in the filled glue is 0.8-1.2.
In order to solve the above problem, the present invention also discloses a display device including the display panel as described in any one of the above.
In order to solve the above problems, the present invention also discloses a method for manufacturing a display panel, the method comprising:
providing a first substrate and a second substrate;
preparing filling adhesive, wherein the filling adhesive is doped with particles with anisotropic refractive index;
coating the filling adhesive on the first substrate;
pressing the second substrate on the filling adhesive to be aligned with the first substrate;
magnetizing the filling adhesive, and curing at the same time to enable the refractive index of the particles with anisotropic refractive index in the direction perpendicular to the first substrate and the second substrate to be larger than the refractive index in the direction parallel to the first substrate and the second substrate.
Preferably, the preparing the filling adhesive comprises:
and mixing the organic glue and the refractive index anisotropic particles according to a preset mass ratio, and uniformly stirring to obtain the filling glue.
Compared with the prior art, the invention has the following advantages:
according to the display panel provided by the embodiment of the invention, the filling adhesive between the first substrate and the second substrate is doped with the particles with anisotropic refractive index, so that the filling adhesive can be used for filling the pores between the first substrate and the second substrate and preventing the display panel from having color difference under different viewing angles, and meanwhile, the preparation process of the display panel in the embodiment of the invention is simple.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to a first embodiment of the invention;
fig. 2 is a flowchart illustrating a method for manufacturing a display panel according to a second embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
Referring to fig. 1, a schematic structural diagram of a display panel according to a first embodiment of the present invention is shown.
In the embodiment of the present invention, the display panel includes a first substrate 10 and a second substrate 20 that are disposed opposite to each other, and a gap between the first substrate 10 and the second substrate 20 is filled with an underfill 30, where the underfill is doped with particles having refractive index anisotropy, and the particles may be nanoparticles.
In the embodiment of the present invention, the first substrate 10 includes a substrate and a light emitting unit and a pixel defining layer (not shown in the drawings) on the substrate. Wherein the substrate may be glass or a flexible substrate, and the light emitting unit includes a reflective electrode, an organic light emitting layer, and a transparent electrode, which are stacked, wherein the reflective electrode is disposed on the substrate, and the pixel defining layer is also disposed on the substrate.
In the embodiment of the invention, a cover plate (not shown) is disposed on the second substrate 20, and a sealant (not shown) is disposed around the space between the first substrate 10 and the second substrate 20.
In an embodiment of the present invention, the refractive index of the refractive index anisotropic particles in a direction perpendicular to the first substrate and the second substrate is larger than the refractive index in a direction parallel to the first substrate and the second substrate. Specifically, the refractive index of the refractive index anisotropic particles in a direction perpendicular to the first substrate 10 and the second substrate 20 is the largest as compared with the refractive index in the other direction.
In the embodiment of the invention, due to the existence of the particles with anisotropic refractive index, when the light is emitted, the refractive index a vertical to the first substrate and the second substrate is larger than the refractive index b parallel to the first substrate and the second substrate, and when the light is rotated to the direction parallel to the first substrate in the direction vertical to the first substrate, the refractive index is gradually reduced. From the refractive index formula n ═ c/v, where n is the refractive index, c is the speed of light in vacuum, and v is the propagation speed of light in the medium, it can be seen that the larger n is, the lower the propagation speed in the optical medium is. In the display panel, the propagation path of light in the vertical direction is smaller than that in other directions, and when there is no anisotropic particle, the light enters the eyes of the observer in the vertical direction earlier than that in other directions, and thus, an observation chromatic aberration occurs. So as to ensure that the light under different paths simultaneously reaches the eyes of an observer, and eliminate the observation chromatic aberration under different viewing angles to a certain extent.
In the embodiment of the present invention, the second substrate 20 includes a black matrix layer 21 and a color film layer 22; wherein, the color film layer 22 is doped with the particles with anisotropic refractive index.
The color film layer 22 includes a plurality of pixel units, and different kinds of pixel units are doped with particles with different refractive index anisotropies.
In the embodiment of the present invention, the black matrix layer 21 and the color film layer 22 are disposed at an interval. In this case, the same refractive index anisotropic particles may be added to the color film layer 22 to eliminate the color difference.
In the embodiment of the present invention, the color film layer 22 includes four types, red, green, blue and white, and different refractive index anisotropic particles may be added to different types of color film layers 22. Different kinds of anisotropic particles are doped in different kinds of color film layers, so that the transmission speed of light in different kinds of color film layers under different viewing angles can be regulated, different colors can reach eyes of an observer at the same time, and the light attenuation amplitudes of the different colors are consistent.
In the embodiment of the present invention, the filling paste 30 may be doped with particles having anisotropic refractive index only, the color film layer 22 may be doped with particles having anisotropic refractive index only, or both the filling paste 30 and the color film layer 22 may be doped with particles having anisotropic refractive index, which may be added according to actual conditions.
In an embodiment of the present invention, the refractive index anisotropic particles are perovskite-type crystals; the size of the crystal is 20nm-50 nm; the mass ratio of the organic glue to the doped refractive index anisotropic particles in the filled glue 30 is 0.8-1.2.
In an embodiment of the invention, the perovskite comprises: RCrO3(R ═ Gd, Tb, Dy, Er, Nd); the general molecular formula of the perovskite crystal is ABX3Wherein A is rare earth or alkaline earth element ions, B is transition metal element ions such as Mn/Co/Fe/Yb and the like, and X is oxygen ions, and the compound has a stable crystal structure and unique electromagnetic performance.
In the embodiment of the present invention, the filling paste 30 is an organic paste mixed with the particles having anisotropic refractive index, wherein the organic paste is mainly an organic substance, and does not affect the crystal structure and refractive index of the particles having anisotropic refractive index, and the organic paste can also fix the first substrate 10 and the second substrate 20.
In an embodiment of the present invention, there is further provided a display device including the display panel described in any one of the above.
According to the display panel provided by the embodiment of the invention, the filling adhesive between the first substrate and the second substrate is doped with the particles with anisotropic refractive index, so that the filling adhesive can be used for filling the pores between the first substrate and the second substrate and preventing the display panel from having color difference under different viewing angles, and meanwhile, the preparation process of the display panel in the embodiment of the invention is simple.
Example two
Referring to fig. 2, a flowchart illustrating a method for manufacturing a display panel according to a third embodiment of the present invention is shown.
The method comprises the following specific steps:
step 201: a first substrate and a second substrate are provided.
In the embodiment of the present invention, the first substrate 10 includes a substrate and a light emitting unit and a pixel defining layer (not shown in the drawings) on the substrate. Wherein the substrate may be glass or a flexible substrate, and the light emitting unit includes a reflective electrode, an organic light emitting layer, and a transparent electrode, which are stacked, wherein the reflective electrode is disposed on the substrate, and the pixel defining layer is also disposed on the substrate.
In the embodiment of the invention, a cover plate (not shown) is disposed on the second substrate 20, and a sealant (not shown) is disposed around the space between the first substrate 10 and the second substrate 20.
Step 202: and preparing filling adhesive, wherein the filling adhesive is doped with particles with anisotropic refractive index.
In this embodiment of the present invention, step 202 includes: and mixing the organic glue and the refractive index anisotropic particles according to a preset mass ratio, and uniformly stirring to obtain the filling glue.
In the embodiment of the invention, particles with refractive index anisotropy of 20nm-50nm are selected; and mixing the liquid organic glue with the particles with anisotropic refractive index according to the mass ratio of 0.8-1.2 to obtain the liquid filling glue.
Step 203: and coating the filling adhesive on the first substrate.
In an embodiment of the present invention, the liquid filled paste prepared in step 202 is coated on the first substrate by inkjet printing or a dispenser. The filling adhesive may be coated on the first substrate by other methods, which is not limited in the present invention.
Step 204: and pressing the second substrate on the filling adhesive to be aligned with the first substrate.
Step 205: magnetizing the filling adhesive, and curing at the same time to enable the refractive index of the particles with anisotropic refractive index in the direction perpendicular to the first substrate and the second substrate to be larger than the refractive index in the direction parallel to the first substrate and the second substrate.
In the embodiment of the invention, the perovskite nano particles have certain magnetism, and can induce the particles to deflect to a certain extent under the action of a magnetic field; after the second substrate is aligned with the first substrate through the filling adhesive, a magnetic device can be added on the carrying platform, a magnetic field is applied to the filling adhesive, and ultraviolet curing is carried out simultaneously, so that the orientation of the particles with anisotropic refractive index is consistent.
In the embodiment of the invention, the second substrate comprises a black matrix layer and a color film layer which are arranged at intervals. The color film layer is made of the following materials: a mixture of a color film material and anisotropic nanoparticles; the embodiment of the invention also comprises the following steps: doping the anisotropic nano particles in the color film material to prepare a color film material; and coating the color film material doped with the anisotropic nano particles between the black matrixes and on the pixel elimination layer, then applying a magnetic field to the color film material and curing to enable the orientation of the anisotropic nano particles to be consistent, and finishing the preparation of the color film layer.
In the embodiment of the invention, the step of doping anisotropic nanoparticles in the color film material comprises: doping different anisotropic nano particles in different color film materials; and coating different color film materials doped with different anisotropic nano particles between the corresponding black matrixes and on the pixel elimination layer.
According to the display panel provided by the embodiment of the invention, the filling adhesive between the first substrate and the second substrate is doped with the particles with anisotropic refractive index, so that the filling adhesive can be used for filling the pores between the first substrate and the second substrate and preventing the display panel from having color difference under different viewing angles, and meanwhile, the preparation process of the display panel in the embodiment of the invention is simple.
While, for purposes of simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present invention is not limited by the illustrated ordering of acts, as some steps may occur in other orders or concurrently with other steps in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Finally, it should also be 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 like elements in a process, method, article, or apparatus that comprises the element.
The display panel, the display device and the method for manufacturing the display panel provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person 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 comprises a first substrate and a second substrate which are oppositely arranged, wherein a gap between the first substrate and the second substrate is filled with filling glue, and the filling glue is doped with particles with anisotropic refractive index;
wherein the refractive index of the refractive index anisotropic particles in a direction perpendicular to the first and second substrates is greater than the refractive index in a direction parallel to the first and second substrates.
2. The display panel according to claim 1, wherein the refractive index of the refractive index anisotropic particles is largest in a direction perpendicular to the first substrate and the second substrate.
3. The display panel according to claim 1, wherein the second substrate includes a black matrix layer and a color film layer; wherein the color film layer is doped with the particles with anisotropic refractive index.
4. The display panel of claim 3, wherein the color film layer comprises a plurality of pixel units, and different pixel units are doped with particles with different refractive index anisotropies.
5. The display panel according to any one of claims 1 to 4, wherein the refractive index anisotropic particles are perovskite-based crystals.
6. The display panel according to claim 5, wherein the crystals have a size of 20nm to 50 nm.
7. The display panel according to any of claims 1 to 4, wherein the mass ratio of the organic glue to the doped refractive index anisotropic particles in the filled glue is 0.8-1.2.
8. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
9. A method for preparing a display panel comprises providing a first substrate and a second substrate,
characterized in that the method further comprises:
preparing filling adhesive, wherein the filling adhesive is doped with particles with anisotropic refractive index;
coating the filling adhesive on the first substrate;
pressing the second substrate on the filling adhesive to be aligned with the first substrate;
magnetizing the filling adhesive, and curing at the same time to enable the refractive index of the particles with anisotropic refractive index in the direction perpendicular to the first substrate and the second substrate to be larger than the refractive index in the direction parallel to the first substrate and the second substrate.
10. The method of claim 9, wherein the preparing an underfill comprises:
and mixing the organic glue and the refractive index anisotropic particles according to a preset mass ratio, and uniformly stirring to obtain the filling glue.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810942750.9A CN108933163B (en) | 2018-08-17 | 2018-08-17 | Display panel, display device and preparation method of display panel |
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| CN201810942750.9A CN108933163B (en) | 2018-08-17 | 2018-08-17 | Display panel, display device and preparation method of display panel |
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| CN108933163A CN108933163A (en) | 2018-12-04 |
| CN108933163B true CN108933163B (en) | 2020-11-03 |
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| CN113257131B (en) * | 2021-05-20 | 2023-10-31 | 北京京东方显示技术有限公司 | Photoresist material, color film substrate, preparation method of color film substrate and display device |
| CN113991036A (en) * | 2021-10-12 | 2022-01-28 | 武汉华星光电半导体显示技术有限公司 | OLED display panel |
Citations (4)
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| CN102662271A (en) * | 2011-06-21 | 2012-09-12 | 华映光电股份有限公司 | Display |
| CN102842684A (en) * | 2011-06-22 | 2012-12-26 | 三星显示有限公司 | Electrode including magnetic material and organic light emitting device including the electrode |
| CN103547948A (en) * | 2011-04-20 | 2014-01-29 | 密执安州立大学董事会 | Spectrum filtering for visual displays and imaging having minimal angle dependence |
| KR20160063116A (en) * | 2014-11-26 | 2016-06-03 | 엘지디스플레이 주식회사 | Dual display device and method for fabricating the same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547948A (en) * | 2011-04-20 | 2014-01-29 | 密执安州立大学董事会 | Spectrum filtering for visual displays and imaging having minimal angle dependence |
| CN102662271A (en) * | 2011-06-21 | 2012-09-12 | 华映光电股份有限公司 | Display |
| CN102842684A (en) * | 2011-06-22 | 2012-12-26 | 三星显示有限公司 | Electrode including magnetic material and organic light emitting device including the electrode |
| KR20160063116A (en) * | 2014-11-26 | 2016-06-03 | 엘지디스플레이 주식회사 | Dual display device and method for fabricating the same |
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