CN115576131B - Display panel and display device - Google Patents
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- CN115576131B CN115576131B CN202211280737.4A CN202211280737A CN115576131B CN 115576131 B CN115576131 B CN 115576131B CN 202211280737 A CN202211280737 A CN 202211280737A CN 115576131 B CN115576131 B CN 115576131B
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- 239000010410 layer Substances 0.000 claims abstract description 458
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 343
- 230000010287 polarization Effects 0.000 claims abstract description 21
- 239000012790 adhesive layer Substances 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 2
- 238000001579 optical reflectometry Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 49
- 239000011241 protective layer Substances 0.000 abstract description 7
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 32
- 238000010586 diagram Methods 0.000 description 13
- 239000000758 substrate Substances 0.000 description 13
- 239000002184 metal Substances 0.000 description 12
- 238000002161 passivation Methods 0.000 description 11
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- 239000012044 organic layer Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
Abstract
The embodiment of the application provides a display panel and a display device. The liquid crystal display panel comprises a panel main body, a compensation layer and a liquid crystal polarization layer, wherein liquid crystal molecules are arranged in the compensation layer and the liquid crystal polarization layer, and an included angle between the direction of the liquid crystal molecules in the liquid crystal polarization layer for absorbing polarized light and the slow axis direction of the liquid crystal molecules in the compensation layer is 45 degrees. In the embodiment of the application, the liquid crystal polarizing layer is directly arranged on the compensation layer, so that an adhesive layer and a protective layer are omitted, and the compensation layer and the liquid crystal polarizing layer are regulated to adapt to display panels with different parameters, and the integral black effect of the display panel in dark state display is improved.
Description
Technical Field
The present application relates to the field of manufacturing technology of display panels, and in particular, to a display panel and a display device.
Background
Along with the development of display panel preparation technology, people put forward higher requirements on display effects and comprehensive performances of display panels and display devices.
In the modern communications industry, there is an increasing market demand for various display products, such as cell phones, televisions, tablet computers, and digital camera products. Meanwhile, the requirements of various products on optical properties are also increasing. Not only can each product have better luminous display effect during display, but also each product has better performance on dark state display, and if the screen of the display product is required to be darker, the better. However, the film layer structure is complex, and the structure of the polarizer still has a certain problem in dark state display. If the dark state effect is not ideal, the integrated black effect cannot be truly realized. And further reduces the use experience of the user, which is unfavorable for further improving the comprehensive performance of the display panel.
In summary, in the existing display panel, the display effect of the display panel obtained by the preparation is not ideal in dark state display, and the effect of integral black cannot be realized, so that the use experience of a user is reduced.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device. The technical problem that the display effect of the integrated black cannot be realized due to the fact that the dark state effect is not ideal on the dark state display of the display panel is effectively improved, and the comprehensive performance of the display panel is effectively improved.
In order to solve the above technical problems, an embodiment of the present application provides a display panel and a display device, the display panel includes:
a panel main body;
the compensating layer is arranged on the light emitting side of the panel main body;
the liquid crystal polarizing layer is arranged on the compensation layer; the method comprises the steps of,
the cover plate is arranged on the liquid crystal polarization layer;
the liquid crystal display device comprises a compensation layer, a liquid crystal polarizing layer and an optical fiber, wherein liquid crystal molecules are arranged in the compensation layer and the liquid crystal polarizing layer, and an included angle between the direction of the liquid crystal molecules in the liquid crystal polarizing layer for absorbing polarized light and the slow axis direction of the liquid crystal molecules in the compensation layer is 45 degrees.
According to an embodiment of the present application, the display panel further includes an optical adhesive layer, and the liquid crystal polarizing layer further includes a first alignment layer and a first liquid crystal layer;
the first alignment layer is arranged on the surface of the compensation layer, the first liquid crystal layer is arranged on the surface of the first alignment layer, the optical adhesive layer is arranged on the surface of the first liquid crystal layer, and the cover plate is arranged on the surface of the optical adhesive layer.
According to an embodiment of the present application, the thickness of the first liquid crystal layer is set to 1um-10um.
According to an embodiment of the present application, the compensation layer further includes a second alignment layer and a second liquid crystal layer, the second alignment layer is disposed on the surface of the panel body, the second liquid crystal layer is disposed on the surface of the second alignment layer, and the first alignment layer of the liquid crystal polarization layer is disposed on the surface of the second liquid crystal layer.
According to an embodiment of the present application, the thickness of the first alignment layer is the same as the thickness of the second alignment layer.
According to an embodiment of the present application, the long axes of the liquid crystal molecules in the compensation layer are all disposed toward the same direction, and the pretilt angle of the liquid crystal molecules in the compensation layer is 0 °.
According to an embodiment of the present application, each of the liquid crystal molecules in the compensation layer includes a first refractive index and a second refractive index;
the first refractive index is the refractive index of the extraordinary ray formed by the light entering the liquid crystal molecules, and the second refractive index is the refractive index of the ordinary ray formed by the light entering the liquid crystal molecules;
wherein the first refractive index is 1.600-1.630, and the second refractive index is 1.550-1.580.
According to an embodiment of the present application, the compensation layer includes a first liquid crystal compensation layer and a second liquid crystal compensation layer;
the first liquid crystal compensation layer is arranged on the panel main body, the second liquid crystal compensation layer is arranged on the first liquid crystal compensation layer, and the liquid crystal polarization layer is arranged on the surface of the second liquid crystal compensation layer.
According to an embodiment of the present application, slow axes of the liquid crystal molecules in the first liquid crystal compensation layer are all oriented in a first direction, and slow axes of the liquid crystal molecules in the second liquid crystal compensation layer are all oriented in a second direction;
the orthographic projection of the first direction and the second direction on the same plane has an included angle, and the included angle is set to be 60-80 degrees.
According to an embodiment of the present application, the thickness of the first liquid crystal compensation layer is the same as that of the second liquid crystal compensation layer, and pretilt angles of the liquid crystal molecules in the first liquid crystal compensation layer and the liquid crystal molecules in the second liquid crystal compensation layer are all 0 °.
According to an embodiment of the present application, the thickness of the compensation layer is 1um-10um.
According to an embodiment of the present application, the light reflectivity corresponding to the compensation layer is less than 4.7%.
According to a second aspect of an embodiment of the present application, there is also provided a display device including: the display panel provided by the embodiment of the application.
The embodiment of the application has the beneficial effects that: compared with the prior art, the embodiment of the application provides a display panel and a display device. The display panel comprises a panel main body, a compensation layer and a liquid crystal polarization layer, wherein liquid crystal molecules are arranged in the compensation layer and the liquid crystal polarization layer, and an included angle between the direction of the liquid crystal molecules in the liquid crystal polarization layer absorbing polarized light and the slow axis direction of the liquid crystal molecules in the compensation layer is 45 degrees. In the embodiment of the application, the liquid crystal polarizing layer is directly arranged on the compensation layer, so that an adhesive layer and a protective layer are omitted, and liquid crystals in the compensation layer and the liquid crystal polarizing layer are regulated to adapt to display panels with different parameters. Therefore, the thickness of the display panel is effectively thinned, and the display effect of the integrated black of the display panel in the dark state is effectively improved through the compensation layer and the liquid crystal polarization layer.
Drawings
In order to more clearly illustrate the embodiments or the technical solutions in the prior art, the following description will briefly introduce the drawings that are required to be used in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a film structure of a display panel according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a liquid crystal compensation layer according to an embodiment of the present application;
FIG. 3 is a schematic diagram of light deflection according to an embodiment of the present application;
FIG. 4A is a schematic diagram of a film structure of another compensation layer according to an embodiment of the present application;
FIG. 4B is a schematic diagram of a stack of two different compensation layers according to an embodiment of the present application;
fig. 5 is a schematic diagram of a film structure of a display device according to an embodiment of the present application;
fig. 6 is a schematic diagram of a preparation process of the compensation layer according to an embodiment of the present application.
Detailed Description
The following disclosure provides various embodiments or examples of implementing various features of the application in conjunction with the accompanying drawings in the examples of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. In addition, the examples of the various specific processes and materials provided herein are those of ordinary skill in the art and will recognize other process applications. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
With the continuous development of display panel manufacturing technology, people put forward higher requirements on the performance and display effect of display panels and display devices.
In the use, not only the display panel is required to have a higher display effect when emitting light, but also the display screen of the display panel is required to have a better blackbody effect when the display panel is in a dark state. Thereby ensuring different use requirements of users. However, the integrated black effect of the display panel prepared in the prior art is not ideal, which is not beneficial to further improving the comprehensive performance of the display panel and the device.
The embodiment of the application provides an array substrate and a display panel, which are used for effectively improving the comprehensive performance of the display panel.
As shown in fig. 1, fig. 1 is a schematic diagram of a film structure of a display panel according to an embodiment of the present application. Specifically, the display panel includes a panel body 101, a compensation layer 102, a liquid crystal polarizing layer 103, an optical adhesive layer 106, and a cover 107.
Wherein the compensation layer 102 is disposed on the panel body 101. In the embodiment of the present application, the panel body 101 may include a plurality of stacked layers, for example, a light emitting layer, a passivation layer, a pixel definition layer, and other multi-layer layers in the panel body 101, where the stacking of the layers may be set according to the stacking relationship and functions between the existing layers, and when the panel body 101 is set, the corresponding panel body structure in the prior art may be referred to for setting, which is not described herein again. Meanwhile, the compensation layer 102 is disposed on the panel body 101. The compensation layer 102 is disposed on one side of the light-emitting side of the panel body, and specifically, the liquid crystal polarizing layer 103 is disposed on the upper surface of the compensation layer 102.
When the display panel is displaying, the light emitted from the panel main body 101 sequentially passes through different film layers, such as the compensation layer 102, the liquid crystal polarization layer 103 and the cover plate 107, and finally exits the display panel, so as to realize the light-emitting display of the display panel.
When the display panel is in a dark state, the light path of the external light is opposite to that of the emergent light. Specifically, the external light sequentially passes through the cover plate, the liquid crystal polarizing layer 103, the compensation layer 102 and the panel main body 101, and part of the light is reflected by the metal layer and other structures in the panel main body 101, and the reflected light passes through each film layer again and is transmitted out of the display panel.
According to the embodiment of the application, the liquid crystal polarizing layer is directly arranged on the upper surface of the compensation layer, so that the function of the polaroid is realized, and in the preparation process, the existing equipment is adopted for preparation, so that the preparation process is effectively simplified, the production cost is reduced, and the integral black effect of the panel is improved. Meanwhile, in the embodiment of the application, when the supplementary layer and the liquid crystal polarizing layer are arranged, the compensating layer is directly arranged on the surface of the panel main body, and the liquid crystal polarizing layer is directly arranged on the surface of the compensating layer.
The compensation layer and the liquid crystal polarization layer are directly prepared and formed by coating liquid crystal and solidifying, namely, other film layers such as an adhesive layer and the like are not required to be arranged between the compensation layer and the panel main body and between the compensation layer and the liquid crystal polarization layer. Meanwhile, the outermost liquid crystal polarizing layer is formed through solidification, so that the liquid crystal polarizing layer has certain hardness, and when the liquid crystal polarizing layer is transported and attached, other glue layers and protective layers are not required to be additionally arranged between the compensation layer and the panel main body and between the compensation layer and the liquid crystal polarizing layer, so that the thickness of the display panel is effectively reduced and the comprehensive performance of the display panel is improved while the integral black effect of the display panel is ensured.
Specifically, in the embodiment of the present application, when the liquid crystal polarizing layer 103 is formed, liquid crystal molecules are disposed in the liquid crystal polarizing layer 103 and the compensation layer 102, and an included angle between a direction in which the liquid crystal molecules in the liquid crystal polarizing layer 103 absorb polarized light and a slow axis direction of the liquid crystal molecules in the compensation layer 102 is 45 °. When light passes through the liquid crystal polarizing layer 103 and the compensation layer 102, the two film layers act on the light together, and the display effect of the display panel integrated black is realized.
In the embodiment of the present application, the liquid crystal polarizing layer 103 further includes a first alignment layer 1032 and a first liquid crystal layer 1031. Wherein the first alignment layer 1032 is disposed on the compensation layer 102, and the first liquid crystal layer 1031 is disposed on the first alignment layer 1032. In the embodiment of the present application, a liquid crystal layer is directly coated on the first alignment layer 1032, and the liquid crystal layer is cured to form a film, thereby forming the first liquid crystal layer 1031 in the embodiment of the present application. Meanwhile, the optical adhesive layer 106 is directly disposed on the first liquid crystal layer 1031.
The thickness of the first liquid crystal layer 1031 may be set to 1um-10um. Preferably, the thickness of the first liquid crystal layer 1031 is set to 5um, so that the thin and light arrangement of the film layer is realized on the premise of ensuring the effect of the first liquid crystal layer 1031 on light rays.
Further, in the embodiment of the present application, the compensation layer 102 further includes a second alignment layer 1022 and a second liquid crystal layer 1021. Specifically, the second alignment layer 1022 is disposed on the panel body 101, the second liquid crystal layer 1021 is disposed on the second alignment layer 1022, and the first alignment layer 1032 is directly disposed on the second liquid crystal layer 1021. The liquid crystal molecules in the second liquid crystal layer 1021 are aligned by the second alignment layer 1022.
In the embodiment of the present application, the thickness of the first alignment layer 1032 in the liquid crystal polarizing layer 103 may be the same as the thickness of the second alignment layer 1022 in the compensation layer 102, and the alignment layers are used to align the liquid crystal molecules in different liquid crystal layers, so as to achieve the effect of light and ensure the integral black display effect of the display panel.
Further, in the embodiment of the present application, the first liquid crystal layer 1031 and the second liquid crystal layer 1021 are both provided with liquid crystal molecules, for example, the first liquid crystal layer 1031 is provided with polarized liquid crystal molecules 105, and the second liquid crystal layer 1021 is provided with liquid crystal molecules 104. The included angle between the direction of the polarized liquid crystal molecules 105 absorbing polarized light and the slow axis direction of the liquid crystal molecules 104 in the compensation layer is 45 degrees, so that the effect of light is realized, and the integral black display effect of the panel is realized.
In the embodiment of the present application, when the compensation layer 102 is disposed, the light has a phase retardation of odd multiple of pi/2 when the light passes through the compensation layer 102. Therefore, the liquid crystal in the compensation layer 102 needs to be set in a specific arrangement.
Specifically, as shown in fig. 2, fig. 2 is a schematic structural diagram of a compensation layer provided in an embodiment of the present application. In an embodiment of the present application, the compensation layer 102 further includes at least one liquid crystal compensation layer. The compensation layer 102 includes a second alignment layer 1022 and a second liquid crystal layer 1021 disposed on the second alignment layer 1022. In the second liquid crystal layer 1021, a plurality of liquid crystal molecules 104 are provided. In the embodiment of the present application, the compensation layer 102 may be provided with only a single layer of the liquid crystal compensation layer, or may be provided with a stacked structure of multiple layers of liquid crystal compensation layers. When the device is specifically arranged, the device can be set according to the requirements of actual products. And will not be described in detail here.
In the embodiment of the present application, when the compensation layer 102 is provided, the thickness of the compensation layer 102 is set to be 1um-10um. Preferably, in the embodiment of the present application, the thickness of the film layer of the compensation layer 102 is set to be 2.7um, and the thickness of the compensation layer 102 is set to be 1um-10um, so that on one hand, it can be ensured that liquid crystal molecules can be arranged in the compensation layer 102, and enough arrangement space is reserved for a plurality of liquid crystal molecules, and on the other hand, the thickness of the film layer can be ensured, thereby realizing the light and thin arrangement of the compensation layer and the corresponding display panel, and effectively improving the comprehensive performance of the display panel.
In the embodiment of the present application, when the compensation layer 102 is provided, the liquid crystal molecules 104 can achieve a predetermined inclination angle by adjusting the liquid crystal molecules in the compensation layer 102, so as to achieve different adjustment and control effects, and further ensure the comprehensive performance of the prepared display panel.
Specifically, in order to ensure the effect of the liquid crystal molecules 104 on the light, in the embodiment of the present application, the liquid crystal molecules 104 may be uniformly arranged in the second liquid crystal layer 1021. Such as the same distance between two adjacent liquid crystal molecules 104.
Further, the compensation layer provided in the embodiment of the present application further includes a second alignment layer 1022. Specifically, the second alignment layer 1022 may be disposed on the panel body, and meanwhile, the second liquid crystal layer 1021 is disposed on the second alignment layer 1022.
In the embodiment of the present application, for the liquid crystal molecules 104, the liquid crystal molecules 104 may have a rod-like or butterfly-like structure. Which comprises a first optical axis a and a second optical axis b. Specifically, the effect of two different optical axes on light is different, so that the effect on light with different polarization directions is realized. In the embodiment of the present application, the first optical axis a corresponds to the fast axis of the liquid crystal molecule, and the second optical axis b corresponds to the slow axis of the liquid crystal molecule. When the liquid crystal molecules are in a regular shape, such as a regular long rod-like structure, the fast axis thereof may correspond to the short axis of the liquid crystal, and the slow axis thereof may correspond to the long axis of the liquid crystal.
Wherein when light enters the liquid crystal molecules 104, it will be birefringent within the liquid crystal molecules. Fig. 3 is a schematic view of light deflection according to an embodiment of the present application, as shown in fig. 3. In the embodiment of the present application, the incident light beam W vibrates in different directions when propagating. Finally, it can be decomposed into a first ray c polarized in a first direction, and a second ray d polarized in a second direction, for example. If the first light ray c is along the longitudinal direction, the second light ray d is along the transverse direction. In the embodiment of the present application, the light ray W is illustrated by taking a light ray having a wavelength of 566nm as an example. When the wave plates 31, 32 of different directions of vibration are placed on the propagation path of the light ray W, they act on the light of different directions of vibration. Therefore, light rays in a specific vibration direction are enabled to pass, but light rays in a non-specific vibration direction cannot pass, and the purpose of different display effects is achieved.
Specifically, the first light ray may include an extraordinary ray (no) whose light vector vibration direction is parallel to the long axis of the liquid crystal molecules, and the second light ray may include an ordinary ray (ne) whose light vector vibration direction is perpendicular to the long axis of the liquid crystal molecules.
In the embodiment of the application, when the first light propagates in the liquid crystal molecule, the corresponding first refractive index is 1.600-1.630. Meanwhile, when the second light rays propagate in the liquid crystal molecules, the corresponding second refractive index is 1.55-1.58. Preferably, the first refractive index of the first light is 1.626, while the second refractive index of the second light is 1.573. When light passes through the liquid crystal molecules, the larger transmittance can be ensured, and meanwhile, as the corresponding optical path difference of the light in the liquid crystal compensation layer is odd times of pi/2, the reflected light is prevented from passing through the polarizing layer 103 on the upper layer by the liquid crystal molecules, and the integral black effect of the display panel is effectively improved.
In the embodiment of the present application, see fig. 2 in detail. When the liquid crystal molecules 104 are disposed, each liquid crystal molecule 104 has a certain pretilt angle α. In the embodiment of the present application, the pretilt angle α is an angle between the optical axis of the liquid crystal and the bottom surface of the liquid crystal compensation layer, or the horizontal plane of the alignment layer 1022.
Specifically, the pretilt angle α is set to 0 °. I.e. each liquid crystal molecule is laid horizontally on the corresponding liquid crystal compensation layer, the light having a phase retardation of an odd multiple of pi/2 after passing through each liquid crystal molecule. Preferably, the phase retardation of the light is pi/2, 3 pi/2, etc.
Further, in the embodiment of the present application, the second optical axes b of the liquid crystal molecules 104 may be all disposed towards the length direction of the film layer.
In the embodiment of the present application, when the liquid crystal molecules 104 are aligned, the second alignment layer 1022 may be irradiated with ultraviolet light by adopting a light treatment method, and alignment of the liquid crystal molecules is achieved. Specifically, a curing light source with a wavelength of 300nm-380nm is used for irradiation, and optionally, a curing light source with a wavelength of 350nm, 360nm or 370nm is selected for irradiation and alignment of liquid crystal molecules, so that the liquid crystal molecules 104 in the liquid crystal compensation layer have the same pretilt angle.
Specifically, in order to ensure the effect of the film layer on light, and improve the integral black display effect of the display panel. When the compensation layer 102 is provided, the thickness thereof satisfies: Δn=d=1/4λ, where Δn is the difference between the refractive index ne of the compensation layer 102 for ordinary light and the refractive index no of the compensation layer 102 for extraordinary light, i.e., Δn=ne-no, d is the thickness of the compensation layer 102, and λ is the wavelength of visible light. Note that Δn×d represents a phase retardation parameter of the compensation layer 102, where the phase retardation parameter is related to the thickness d of the compensation layer 102 and the material characteristics of the liquid crystal molecules, and has a certain influence on the display effect of the display panel, and therefore, the display effect of the display panel can be optimized by adjusting the thickness d of the compensation layer 102 or the material of the liquid crystal molecules.
Specifically, an example is:
if the reflected light of the display panel is bluish, it means that the display panel has more blue light reflected in dark display, and the corresponding short wavelength band with smaller lambda value (generally between 435 nm and 435 nm) is more, which means that the short wavelength band needs to be compensated, so that the thickness d of the compensation layer 102 needs to be reduced to satisfy Δn×d=1/4λ (Δn is a characteristic parameter of liquid crystal molecules, and the value is a fixed value when the liquid crystal molecules are the same), and the band is allowed to realize 1/4λ optical path difference, so that the blue light reflected by the display panel is absorbed by the liquid crystal polarizing layer, thereby eliminating the problem of bluish reflected light of the display panel.
If the reflected light of the display panel is reddish, it means that the display panel has more red light reflected in dark display, and the corresponding long wavelength band with larger lambda value (generally 622 nm to 760 nm) is more, it means that the long wavelength band needs to be compensated, so that the thickness d of the compensation layer 102 needs to be increased to meet Δn=1/4λ (Δn is a characteristic parameter of liquid crystal molecules, and the value is a fixed value when the liquid crystal molecules are the same), and the wavelength band is allowed to realize 1/4λ optical path difference, so that the reflected light of the display panel is absorbed by the liquid crystal polarizing layer again, and the problem of reddish reflected light of the display panel is eliminated.
In addition, in this embodiment, the same effect is achieved by changing the material of the liquid crystal molecules, that is, by adjusting the parameter Δn of the liquid crystal material, and the specific adjustment is optional, which is not described here.
In this embodiment, the thickness d of the compensation layer 102 may be any value between 1 micron and 10 microns in the light emitting direction of the display panel, for example, the thickness of the compensation layer 102 may be 1 micron, 2.5 microns, 3 microns, 5 microns, 6 microns, 7 microns, 8.5 microns, 10 microns, etc., and the thickness selection of the compensation layer 102 may be adjusted according to the display optical characteristics of different display panels, where the above values do not represent a limitation on the thickness of the compensation layer 102.
Fig. 4A is a schematic diagram of a film structure of another compensation layer according to an embodiment of the present application. In an embodiment of the present application, the compensation layer may further include a multi-film layer stack. Such as a stacked structure of two compensation layers. Specifically, the compensation layer 102 includes two liquid crystal compensation layers stacked together. Wherein the compensation layer 102 includes a first liquid crystal compensation layer 40 and a second liquid crystal compensation layer 41 disposed on the first liquid crystal compensation layer 40. The first liquid crystal compensation layer 40 and the second liquid crystal compensation layer 41 each include an alignment layer and a liquid crystal layer disposed on the alignment layer.
Specifically, the first liquid crystal compensation layer 40 includes a third alignment layer 401, a third liquid crystal layer 402, a fourth alignment layer 403, and a fourth liquid crystal layer 404.
Specifically, a third alignment layer 401 is disposed on the panel body 101, a third liquid crystal layer 402 is disposed on the third alignment layer 401, a fourth alignment layer 403 is disposed on the third liquid crystal layer 402, and a fourth liquid crystal layer 404 is disposed on the fourth alignment layer 403. Meanwhile, the liquid crystal polarizing layer 103 is disposed on the fourth liquid crystal layer 404. In the embodiment of the application, the effect of the compensation layer 102 on light is further improved by arranging the compensation layer as a plurality of liquid crystal layers. When the third liquid crystal layer 402 is not effective to act on all the reflected light, the light is continuously projected into the fourth liquid crystal layer 404, and the light is further acted on by the fourth liquid crystal layer 404, so that the reflected light passing through the liquid crystal compensation layer is reduced, and the display effect of the display panel is improved.
Further, in the embodiment of the present application, the thickness of the third liquid crystal layer 402 may be the same as the thickness of the fourth liquid crystal layer 404. In the embodiment of the present application, the thicknesses of the third liquid crystal layer 402 and the fourth liquid crystal layer 404 are set to be the same, so that the two different liquid crystal compensation layers have the same effect on light. Preferably, the thickness of the third liquid crystal layer 402 and the thickness of the fourth liquid crystal layer 404 are set to be 2.5um-3.0um. Preferably, set to 2.7um. In this way, the number of the adhesive layers in the display panel can be reduced while ensuring that enough arrangement space can be reserved for liquid crystal molecules in each liquid crystal compensation layer, and meanwhile, in the embodiment of the application, the preparation is carried out by directly coating the liquid crystal, so that the multi-layer adhesive layer and the protective layer in the polaroid lamination in the prior art can be directly omitted, the light and thin arrangement of the inner film layer of the display panel is realized, and the comprehensive performance of the display panel is effectively improved.
Meanwhile, the thicknesses of the third alignment layer 401 and the fourth alignment layer 403 may be set to be the same, and the thicknesses of the film layers of the third alignment layer 401 and the fourth alignment layer 403 may be set according to the requirements of the actual product. Specifically, the actual thickness is not particularly limited herein, and further, when the liquid crystal alignment layer is provided, a polymethyl methacrylate material or a polyimide material may be selected for the arrangement, so as to ensure the alignment effect thereof.
Further, third liquid crystal molecules 411 are provided in the third liquid crystal layer 402, and fourth liquid crystal molecules 412 are provided in the fourth liquid crystal layer 404. In the embodiment of the application, the third liquid crystal molecules 411 and the fourth liquid crystal molecules 412 have the same pretilt angle. Specifically, the pretilt angles of the two liquid crystal molecules are all set to 0 °, that is, the liquid crystal molecules in the two different liquid crystal compensation layers are all horizontally arranged in the corresponding film layers.
Preferably, when the third liquid crystal molecules 411 and the fourth liquid crystal molecules 412 are disposed, the projection of the third liquid crystal molecules 411 on the third alignment layer 401 may at least partially coincide with the projection of the fourth liquid crystal molecules 412 on the third alignment layer 401. Such as the fourth liquid crystal molecule 412, is disposed at a corresponding position directly above the third liquid crystal molecule 411.
Further, the third liquid crystal molecules 411 may be disposed in a staggered manner with respect to the fourth liquid crystal molecules 412, i.e. the projection of the fourth liquid crystal molecules 412 onto the third alignment layer 401 is not overlapped with the projection of the third liquid crystal molecules 411 onto the third alignment layer 401. Such as the third liquid crystal molecule 411 is correspondingly disposed in the gap region between two adjacent fourth liquid crystal molecules 412. Therefore, when the first liquid crystal compensation layer cannot fully act on light, the second liquid crystal compensation layer can further act on the light, so that the acting effect of the compensation layer on the light is effectively improved, and the integral black effect of the panel in a dark state is realized.
Further, as shown in fig. 4B, fig. 4B is a schematic diagram of a lamination of two different compensation layers according to an embodiment of the present application. In combination with the film structure of fig. 4A. In the embodiment of the present application, the upper and lower different layers in the illustration correspond to the third liquid crystal layer 402 and the fourth liquid crystal layer 404, respectively.
When the third liquid crystal molecules 411 and the fourth liquid crystal molecules 412 in the respective film layers are provided, the third liquid crystal molecules 411 are provided along the first direction t1 at a pretilt angle of 0 °. Meanwhile, the pretilt angles of the fourth liquid crystal molecules 412 within the second liquid crystal compensation layer are 0 °, and each of the fourth liquid crystal molecules 412 is disposed toward the second direction t 2. Wherein, the first direction and the second direction are set by taking the XY coordinate axis of the horizontal plane as a reference object.
In the embodiment of the application, the included angles between the first direction t1 and the second direction t2 and the horizontal X axis are different relative to the same horizontal plane, such as the same surface of the first liquid crystal compensation layer or the second liquid crystal compensation layer. Specifically, on the same plane, an included angle β is formed between the first direction t1 and the second direction t 2. Wherein the included angle beta is set to 60-80 degrees. In the embodiment of the present application, the first direction t1 may be the same as the slow axis of the liquid crystal molecules. Preferably, the angle between the first direction and the second direction may be set to 75 ° or 77 °. In the embodiment of the application, the included angle value between the first direction and the second direction is as large as possible and is close to 80 degrees, so that two different liquid crystal compensation layers can better act on light. By setting the third liquid crystal molecules and the fourth liquid crystal molecules in the compensation layer to different orientations, the pretilt angle of the liquid crystal molecules in each liquid crystal layer is set to 0 °. When the light rays with different wavelengths pass through the compensation layer, the third liquid crystal layer and the fourth liquid crystal layer can respectively act on the light rays so as to further improve the acting effect of the compensation layer on the light rays.
Preferably, when the third liquid crystal molecules 411 and the fourth liquid crystal molecules 412 in the second liquid crystal compensation layer are disposed, the distribution density of the third liquid crystal molecules 411 may be greater than the distribution density of the fourth liquid crystal molecules 412. When light is reflected from the metal layer in the display panel to the outside, the light will first pass through the first liquid crystal compensation layer, so that the third liquid crystal molecules 411 with larger distribution density can act on the light as much as possible, thereby improving the angle and optical path difference of the emergent light and realizing the display effect of the display panel with black body.
Further, in the embodiment of the present application, when the third liquid crystal molecules 411 and the fourth liquid crystal molecules 412 are disposed, the size of the third liquid crystal molecules 411 may be larger than the size of the fourth liquid crystal molecules 412. Specifically, the length of the liquid crystal slow axis of the third liquid crystal molecule 411 is longer than that of the fourth liquid crystal molecule 412. When light passes through the third liquid crystal molecule 411 in the first liquid crystal compensation layer, the longer liquid crystal molecules can transmit more light, so as to improve the effect of the two different liquid crystal compensation layers on the light and ensure the integral black display effect of the display panel.
Preferably, in the embodiment of the present application, when the third liquid crystal molecule 411 and the fourth liquid crystal molecule 412 are disposed, a projection point of a geometric center of the fourth liquid crystal molecule 412 on the first liquid crystal layer and a projection point of a geometric center of the third liquid crystal molecule 411 on the first liquid crystal layer are overlapped with each other, wherein the geometric center may be an intersection point of two different axes of the liquid crystal molecules, so that the third liquid crystal molecule 411 corresponds to the fourth liquid crystal molecule 412, and an effect of the liquid crystal molecules in two different layers on light is ensured.
Further, in the embodiment of the present application, when the third liquid crystal molecule 411 and the fourth liquid crystal molecule 412 are disposed, the orthographic projection of the second liquid crystal molecule and the corresponding third liquid crystal molecule 411 may be at least partially overlapped, so as to ensure that the light is better acted by the second liquid crystal molecule after passing through the first liquid crystal molecule, and further ensure the effect of the light.
Further, in the embodiment of the present application, the material of each alignment layer may include any one of acrylic resin and polymethyl methacrylate.
Fig. 5 is a schematic diagram of a film structure of a display device according to an embodiment of the application. In an embodiment of the present application, the display device includes: the liquid crystal display device comprises an array substrate, a light-emitting layer 507, a packaging layer, an adhesive layer 512, a compensation layer 102, a liquid crystal polarization layer 103 and a protection layer.
Specifically, the array substrate includes a stacked structure of multiple film layers. The array substrate includes a substrate 500 and interlayer dielectric layers 504 disposed on the substrate 500. In the embodiment of the present application, a plurality of thin film transistors are further disposed in the interlayer dielectric layer 504.
Specifically, the thin film transistor may include an active layer disposed on the substrate 500, a gate electrode insulating disposed on the active layer, and a source/drain metal layer insulating disposed on the gate electrode. And the source/drain metal layer is electrically connected with the active layer through the via structure. In the embodiment of the present application, the structure of the array substrate is a film layer structure of a common thin film transistor array substrate, and detailed description thereof is omitted.
Meanwhile, a pixel defining layer 506 is further disposed on the array substrate, a plurality of pixel opening structures are disposed on the pixel defining layer 506, and a light emitting layer 507 with different colors can be correspondingly disposed in each pixel opening structure. An electrode layer 520 is further provided on the pixel defining layer 506. In an embodiment of the present application, the electrode layer 520 may be an anode.
Further, a passivation layer 508 is further disposed on the electrode layer 520, the passivation layer 508 completely covers the electrode layer 520, and at least one organic layer 509 is disposed on the passivation layer 508. A stacked structure is formed by the passivation layer 508 and the organic layer 509, and constitutes a package layer structure provided in an embodiment of the present application. Wherein the upper surface of the organic layer 509 is set to a horizontal plane.
Further, a second passivation layer 510 and a third passivation layer 511 disposed on the second passivation layer 510 are further disposed on the encapsulation layer. In the embodiment of the present application, a metal layer 515 is further disposed on the second passivation layer 510, and the third passivation layer 511 completely covers the metal layer 515. Preferably, the metal layer 515 may be a touch metal layer, and functions such as touch operation of the display panel are realized through the touch metal layer.
In the embodiment of the present application, an adhesive layer 512 is further disposed on the third passivation layer 511, and a compensation layer 102 is further disposed on the adhesive layer 512. A liquid crystal polarizing layer 103 is directly provided on the upper surface of the compensation layer 102, and a protective layer is provided on the polarizing layer 103.
The compensation layer 102 in the embodiment of the application is directly arranged on the surface of the panel main body, and the liquid crystal polarization layer 103 is directly arranged on the upper surface of the compensation layer 102, so that an adhesive layer and a protective layer among the panel main body, the compensation layer 102 and the liquid crystal polarization layer 103 are omitted. When the compensation layer 102 and the liquid crystal polarizing layer 103 are transported integrally, the compensation layer 102 and the liquid crystal polarizing layer 103 are formed by solidifying the liquid crystal layer, so that the liquid crystal polarizing layer has certain hardness and supporting effect, a plurality of layers of adhesive layers and protective layers between the compensation layer 102 and the liquid crystal polarizing layer 103 are omitted, and the light and thin design of the panel is realized. Meanwhile, the liquid crystal molecules in the compensation layer 102 and the liquid crystal polarization layer 103 are regulated, so that the integral black display effect of the display panel is effectively improved.
Specifically, for the incident light F1 and the incident light F2, when the incident light F1 enters the display device, the incident light F1 sequentially passes through different film layers. When the light reaches the position of the light emitting layer 507, the light is reflected by the electrode layer 520, and forms reflected light F1'. The reflected light rays penetrate through the film layers along the opposite direction of the incident light ray F1, and finally enter the outside and are received by human eyes.
At the same time, some of the incident light, such as incident light F2, passes through each of the layers and is reflected by the other metal layer 515 to form another reflected light F2'. The reflected light F2' also passes through the film layers again and enters the outside.
When entering the panel, the incident light rays F1 and F2 sequentially pass through the polarizing layer and the compensating layer, the polarizing layer acts on part of the light rays, the acted light rays are reflected by the metal layer again, and the reflected light rays F1 'and F2' sequentially pass through the compensating layer provided in the embodiment of the application after being reflected. When the above-mentioned film layers act on different light rays, external light is changed into linear polarized light through the polarizing layer, after the circular polarized light is changed into circular polarized light through the compensating layer, after the circular polarized light is reflected by the metal layer, it is changed from left rotation to right rotation, its rotation mode is changed, when the right-handed light is passed through the compensating layer again, it can be changed into linear polarized light again, and because in this embodiment of the application, the compensating layer and the liquid crystal polarizing layer are equipped with liquid crystal molecules, and the compensating layer has phase delay of odd multiple of pi/2, the direction of liquid crystal molecules in the liquid crystal polarizing layer absorbing polarized light and the included angle between the slow axis direction of liquid crystal molecules in the compensating layer are 45 deg.. Therefore, only a small amount of reflected light can be transmitted through the interaction of the two film layers, so that the emission amount of the reflected light is reduced, and the integral black display effect of the display panel is effectively improved.
Further, the embodiment of the application also provides a preparation method of the display panel. Fig. 6 is a schematic diagram of a process for preparing the compensation layer and the liquid crystal polarizing layer according to an embodiment of the application. In combination with the film structure of fig. 1. First, a substrate 604 is provided, the substrate 604 is cleaned and dried, and after the treatment is completed, an alignment layer is coated on the substrate 604. In the embodiment of the present application, the alignment layer 605 is illustrated by taking the polyimide film layer 605 as an example.
When the coating is performed, the thickness of the polyimide film 605 is set to 90nm to 110nm, and preferably, the thickness of the polyimide film 605 is set to 100nm. After the coating is completed, the alignment layer is dried.
In the case of treating the polyimide film 605, the film may be baked at a predetermined temperature or the like. Specifically, the treatment conditions are as follows: the baking temperature is less than 85 ℃, and the baking time is more than 30min.
Meanwhile, during baking, it is subjected to light treatment, and the polyimide film 605 is aligned by light. Specifically, an alignment light source of 313nm may be used to irradiate the polyimide film 605 so that the pretilt angle of the polyimide film 605 is 0 °, so as to ensure that the liquid crystal molecules can lie on the polyimide film 605.
After the alignment treatment is completed, the polyimide film 605 is coated with the liquid crystal molecules 104. In the embodiment of the application, the liquid crystal molecules can be coated according to the requirements of products, and when the liquid crystal molecules are coated, the liquid crystal molecules are coated according to the structure of the liquid crystal molecules provided in the embodiment of the application. After the coating is completed, it is cured.
In the embodiment of the application, when the liquid crystal layer is cured, the liquid crystal layer can be processed in an illumination curing mode. Preferably, the light source is a 365nm curing light source. Meanwhile, in the treatment process, the treatment temperature is controlled to be less than 100 ℃, and the treatment time is controlled to be less than 30 minutes. And finally the compensation layer 102 is obtained. In the embodiment of the present application, the thickness of the compensation layer 102 is preferably 2.7um.
Further, a liquid crystal polarizing layer 103 is continuously prepared on the compensation layer 102. Specifically, a first alignment layer 1032 is prepared and cured on the compensation layer 102, and after the curing is completed, a first liquid crystal layer 1031 is coated on the first alignment layer 1032, and the first liquid crystal layer 1031 is cured to form the liquid crystal polarizing layer 103 provided in the embodiment of the present application. The included angle between the direction of the liquid crystal molecules in the liquid crystal polarization layer absorbing polarized light and the slow axis direction of the liquid crystal molecules in the compensation layer is 45 degrees.
In the embodiment of the application, the common polaroid is replaced by the compensation layer and the liquid crystal polarizing layer, so that the light is effectively acted, and the integral black display effect of the display panel is realized. In the embodiment of the application, the reflectivity of the compensation layer 102 is not more than 4.7%, so that the transmissivity of the reflection line can be effectively reduced, and the integral black effect of the display panel can be improved.
In the embodiment of the application, the compensation layer can be applied to different display devices and panels, and the display panel can be any product or component with display function such as a mobile phone, a computer, electronic paper, a display, a notebook computer, a digital photo frame and the like, and the specific type of the product or component is not particularly limited.
In summary, the display panel and the display device provided by the embodiments of the present application have been described in detail, and specific examples are applied to illustrate the principles and the embodiments of the present application, and the description of the above embodiments is only for helping to understand the technical solution and the core idea of the present application; although the present application has been described with reference to the preferred embodiments, it should be understood that the application is not limited to the particular embodiments described, but can be modified and altered by persons skilled in the art without departing from the spirit and scope of the application.
Claims (9)
1. A display panel, comprising:
a panel main body;
the compensating layer is arranged on the light emitting side of the panel main body and comprises a first liquid crystal compensating layer and a second liquid crystal compensating layer, the first liquid crystal compensating layer is arranged on the surface of the panel main body, and the second liquid crystal compensating layer is arranged on the surface of the first liquid crystal compensating layer;
the liquid crystal polarizing layer is arranged on the compensation layer; the method comprises the steps of,
the cover plate is arranged on the liquid crystal polarization layer;
the liquid crystal display device comprises a compensation layer, a liquid crystal polarizing layer, a liquid crystal display device and a liquid crystal display device, wherein liquid crystal molecules are arranged in the compensation layer and the liquid crystal polarizing layer, and an included angle between the direction of the liquid crystal molecules in the liquid crystal polarizing layer for absorbing polarized light and the slow axis direction of the liquid crystal molecules in the compensation layer is 45 degrees;
each liquid crystal molecule in the compensation layer comprises a first refractive index and a second refractive index, wherein the first refractive index is the refractive index of an extraordinary ray formed by light entering the liquid crystal molecule, the second refractive index is the refractive index of an ordinary ray formed by light entering the liquid crystal molecule, the first refractive index is 1.600-1.630, the second refractive index is 1.550-1.580, and the corresponding light reflectivity of the compensation layer is smaller than 4.7%;
the slow axes of the liquid crystal molecules in the first liquid crystal compensation layer face to a first direction, and the slow axes of the liquid crystal molecules in the second liquid crystal compensation layer face to a second direction;
the orthographic projection of the first direction and the second direction on the same plane has an included angle, and the included angle is set to 60-80 degrees.
2. The display panel of claim 1, further comprising an optical glue layer, the liquid crystal polarizing layer further comprising a first alignment layer and a first liquid crystal layer;
the first alignment layer is arranged on the surface of the compensation layer, the first liquid crystal layer is arranged on the surface of the first alignment layer, the optical adhesive layer is arranged on the surface of the first liquid crystal layer, and the cover plate is arranged on the surface of the optical adhesive layer.
3. The display panel according to claim 2, wherein a thickness of the first liquid crystal layer is set to 1um-10um.
4. The display panel of claim 1, wherein the compensation layer further comprises a second alignment layer and a second liquid crystal layer, the second alignment layer is disposed on a surface of the panel body, the second liquid crystal layer is disposed on a surface of the second alignment layer, and the first alignment layer of the liquid crystal polarization layer is disposed on a surface of the second liquid crystal layer.
5. The display panel of claim 4, wherein a thickness of the first alignment layer is the same as a thickness of the second alignment layer.
6. The display panel according to claim 1, wherein the liquid crystal molecules in the compensation layer are all disposed toward the same direction, and the pretilt angle of the liquid crystal molecules in the compensation layer is 0 °.
7. The display panel according to claim 1, wherein the first liquid crystal compensation layer and the second liquid crystal compensation layer have the same thickness, and pretilt angles of liquid crystal molecules in the first liquid crystal compensation layer and liquid crystal molecules in the second liquid crystal compensation layer are each 0 °.
8. The display panel of claim 1, wherein the compensation layer has a thickness of 1um-10um.
9. A display device comprising the display panel according to any one of claims 1 to 8.
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| CN202211280737.4A CN115576131B (en) | 2022-10-19 | 2022-10-19 | Display panel and display device |
| PCT/CN2023/078871 WO2024082512A1 (en) | 2022-10-19 | 2023-02-28 | Display panel and display apparatus |
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| CN202211280737.4A CN115576131B (en) | 2022-10-19 | 2022-10-19 | Display panel and display device |
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| CN115576131A (en) | 2023-01-06 |
| WO2024082512A1 (en) | 2024-04-25 |
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