CN217822861U - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN217822861U CN217822861U CN202220604729.XU CN202220604729U CN217822861U CN 217822861 U CN217822861 U CN 217822861U CN 202220604729 U CN202220604729 U CN 202220604729U CN 217822861 U CN217822861 U CN 217822861U
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Abstract
The embodiment of the application discloses a display panel and a display device, wherein the display panel comprises an organic light-emitting layer for emitting light; the viewing angle expanding layer is arranged on one side of the organic light emitting layer, which emits light, and a plurality of dispersion particles are arranged in the viewing angle expanding layer and can change a light transmission path so as to expand the emergent angle of the light; and the circular polaroid is arranged on one side of the visual angle expanding layer, which is far away from the organic light-emitting layer. In the embodiment of the application, the organic light emitting layer emits light towards the direction of the visual angle expanding layer, the visual angle expanding layer is internally provided with a plurality of dispersion particles, and light rays are emitted from all angles after passing through the visual angle expanding layer, so that the emitting angle of the light rays is expanded, and the visual angle of the display device is expanded.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
In recent years, various types of display products are developed at a high speed, and particularly, a plurality of manufacturers invest in development on LCD, OLED and Mini/Micro LED display technologies, and a main display technology is to provide display products with higher contrast, viewing angle and color gamut, and the appearance of the display products is developed towards forms of being ultrathin, bendable, flexible and the like. LCD display devices have been widely used in portable products, home, vehicle, public displays, etc., but at present, the most difficult problem of LCD display devices is their contrast, viewing angle, and shape, so OLED display devices are now widely used. The large-size display device is watched by multiple people, the requirement on the visual angle is higher, and the performance of the visual angle of the OLED display device in the prior art cannot meet the requirement.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a display panel and a display device, which can improve the visual angle of the display panel.
An embodiment of the present application provides a display device, including:
an organic light emitting layer for emitting light;
the viewing angle expanding layer is arranged on one side of the organic light emitting layer, which emits light, a plurality of dispersion particles are arranged in the viewing angle expanding layer, and the plurality of dispersion particles can change the light transmission path so as to expand the emergent angle of the light;
and the circular polaroid is arranged on one side of the visual angle expanding layer, which is far away from the organic light-emitting layer.
Optionally, the display panel further includes an encapsulation layer disposed between the viewing angle enlarging layer and the organic light emitting layer.
Optionally, the encapsulation layer includes a first inorganic film, an organic film, and a second inorganic film, which are stacked, the first inorganic film is disposed above the organic light emitting layer, and the viewing angle enlarging layer is disposed above the second inorganic film.
Optionally, the display panel further includes a third inorganic film, and the third inorganic film covers the viewing angle enlarging layer.
Optionally, the encapsulation layer includes a first glass substrate, and the display panel further includes a first buffer layer disposed between the first glass substrate and the viewing angle enlarging layer.
Optionally, the organic light emitting layer includes:
an organic material layer for emitting light; and
the pixel driving layer is used for driving the organic light-emitting layer to emit light;
the organic material layer is arranged between the pixel driving layer and the visual angle expanding layer, and emits light in a direction deviating from the direction of the pixel driving layer.
Optionally, the organic light emitting layer includes:
an organic material layer; and
the pixel driving layer is used for driving the organic light emitting layer to emit light;
the pixel driving layer is arranged between the organic material layer and the visual angle expanding layer, and the organic material layer emits light towards the direction of the pixel driving layer;
the display panel further comprises a second buffer layer, and the second buffer layer is arranged between the substrate and the visual angle expansion layer.
Alternatively, the viewing angle expansion layer is formed by film inkjet printing, slit coating printing, or particle scattering.
Optionally, the viewing angle enlarging layer further includes a substrate, the plurality of dispersing particles are distributed in the substrate, and the substrate is made of a light-transmitting material.
In a second aspect, an embodiment of the present application provides a display device, including:
a housing;
and a display panel mounted on the housing, the display panel being any one of the display panels described above.
In the embodiment of the application, the display panel comprises an organic light-emitting layer for emitting light; the viewing angle enlarging layer is arranged on one side of the organic light emitting layer, a plurality of dispersion particles are arranged in the viewing angle enlarging layer, the light transmission path can be changed by the plurality of dispersion particles to enlarge the emergent angle of the light, the organic light emitting layer emits light towards the viewing angle enlarging layer, after the light passes through the viewing angle enlarging layer, the light path is changed through refraction and reflection, so that the light can be emitted from all angles, the emergent angle of the light is enlarged, the visual angle of the display device is enlarged, and the difference of the brightness, the chromatic aberration and the like of the picture is smaller when the display panel is viewed from different angles.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, 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 structural diagram of a display panel according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a second structure of a display panel according to an embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram of a third display panel according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram of a fourth structure of the display panel according to the embodiment of the present application.
Fig. 5 is a schematic structural diagram of a fifth display panel according to an embodiment of the present disclosure.
Fig. 6 is a schematic view of a sixth structure of a display panel according to an embodiment of the present application.
Fig. 7 is a schematic diagram of a seventh structure of a display panel according to an embodiment of the present disclosure.
Fig. 8 is an eighth structural schematic diagram of a display panel according to an embodiment of the present application.
Fig. 9 is a schematic structural diagram of a viewing angle enlarging layer according to an embodiment of the present application.
Fig. 10 is a schematic diagram of luminance attenuation of the display panel at different angles according to the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are intended to be within the scope of the present application.
Reference herein to "an embodiment" or "an implementation" means that a particular feature, component, or characteristic described in connection with the embodiment or implementation can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 is a first structural schematic diagram of a display panel according to an embodiment of the present disclosure. The embodiment of the present application provides a display panel 100, which includes an organic light emitting layer 110, a viewing angle enlarging layer 120, and a circular polarizer 140.
The organic light emitting layer 110 is used to emit light, the organic light emitting layer 110 may emit light according to display requirements, and the organic light emitting layer 110 may be an OLED light emitting layer.
The viewing angle enlarging layer 120 is disposed on a side of the organic light emitting layer 110 emitting light, a plurality of dispersion particles 122 are disposed in the viewing angle enlarging layer 120, and the plurality of dispersion particles 122 can change a light transmission path to enlarge an emitting angle of the light.
Alternatively, the dispersive particles 122 may be a transparent inorganic compound, such as one or more of SiO2, si3N4, al2O3, tiO2, and ZrO2, and the light passes through the transparent dispersive particles 122 and is scattered into outgoing light in multiple directions. The dispersive particles 122 may be a black inorganic compound, and the light may not pass through the dispersive particles 122 and may be dispersed into a plurality of outgoing light beams in a plurality of outgoing directions.
Optionally, the dispersive particles 122 are circular particles, so that the light emitted by the organic light emitting layer 110 can be effectively dispersed, and the viewing angle of the display panel 100 is effectively improved. The dispersive particles 122 may have other shapes, such as an ellipsoid shape.
The circular polarizer 140 is disposed on a side of the viewing angle enlarging layer 120 away from the organic light emitting layer 110, so that the light emitted from the organic light emitting layer 110 reaches the circular polarizer 140 after passing through the viewing angle enlarging layer 120.
The organic light emitting layer 110 emits light toward the viewing angle enlarging layer 120, and after the light passes through the viewing angle enlarging layer 120, the viewing angle enlarging layer 120 contains a plurality of dispersive particles 122, and the light changes a light path through refraction and reflection, so that the light can be emitted from various angles, the emitting angle of the light is enlarged, the visual angle of the display panel 100 is enlarged, and the brightness difference is small when the picture of the display panel 100 is viewed from different angles. Specifically, the viewing angle can be understood as an angle range in which the human eye or the instrument perceives the same color and brightness when the display panel 100 is viewed.
Referring to fig. 2, fig. 2 is a second structural schematic diagram of a display panel according to an embodiment of the present disclosure. The display panel 100 further includes an encapsulation layer 150, the encapsulation layer 150 is disposed between the viewing angle expansion layer 120 and the organic light emitting layer 110, that is, the display panel 100 is sequentially overlapped with the organic light emitting layer 110, the encapsulation layer 150, the viewing angle expansion layer 120, and the circular polarizer 140, and the encapsulation layer 150 can protect the organic light emitting layer 110. The viewing angle enlargement layer 120 is disposed on the encapsulation layer 150, so that the viewing angle enlargement layer 120 can be fabricated on the outermost film layer of the display panel 100, and therefore, the viewing angle enlargement layer 120 can be added under the production process of the display panel 100, such as an OLED display panel, and a low-cost, stable and fast production process can be realized. In addition, the visual angle expanding layer 120 is added under the production process of the OLED display panel, and the plurality of dispersion particles 122 are arranged in the visual angle expanding layer 120, so that the visual angle is improved, and the display characteristic is not sacrificed.
The light emitting manner of the display panel 100 may include a top emission manner and a bottom emission manner. When the light emitting manner of the display panel 100 is top emission, in one embodiment, please refer to fig. 3, and fig. 3 is a third structural diagram of the display panel according to an embodiment of the present disclosure.
The encapsulation layer 150 includes a first inorganic film 151, an organic film 152, and a second inorganic film 153 sequentially stacked, the first inorganic film 121 is disposed over the organic light emitting layer 110, and the viewing angle expanding layer 120 is disposed over the second inorganic film 153.
In another embodiment, please refer to fig. 4, wherein fig. 4 is a fourth structural diagram of a display panel according to an embodiment of the present disclosure.
The encapsulation layer 150 includes a first glass substrate 154, and the display panel 100 further includes a first buffer layer 160, the first buffer layer 160 is disposed on a side of the first glass substrate 154 away from the organic light emitting layer 110, and the first buffer layer 160 is disposed between the first glass substrate 154 and the viewing angle expansion layer 120. The viewing angle expansion layer 120 is adjacent to the first buffer layer 160.
In order to ensure process stability, a first buffer layer 160 may be disposed on the first glass substrate 154 of the encapsulation layer 150, and then the viewing angle expansion layer 120 may be disposed on the first buffer layer 160.
Referring to fig. 5, fig. 5 is a schematic view illustrating a fifth structure of a display panel according to an embodiment of the present disclosure. In addition, in order to ensure the adhesion between the viewing angle enlarging layer 120 and the circular polarizer 140, the third inorganic film 130 is disposed between the viewing angle enlarging layer 120 and the circular polarizer 140, so as to ensure the adhesion between the circular polarizer 140 and the viewing angle enlarging layer 120, and further increase the forward water and oxygen blocking property of the display panel. It should be noted that in the above embodiments, the third inorganic film 130 may be disposed between the viewing angle expanding layer 120 and the circular polarizer 140 to ensure the adhesion between the circular polarizer 140 and the viewing angle expanding layer 120.
For example, the first buffer layer 160 may be formed by inkjet printing, slit coating printing, chemical vapor deposition, or the like.
Illustratively, the viewing angle expanding layer 120 may be formed by film inkjet printing, slit coating printing, or particle scattering.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a display panel according to a sixth embodiment of the present disclosure. Fig. 7 is a schematic diagram of a seventh structure of a display panel according to an embodiment of the present application. When the light emitting mode of the display panel 100 is top emission, the organic light emitting layer 110 may include an organic material layer 111 and a pixel driving layer 112, wherein the organic material layer 111 is used for emitting light; the pixel driving layer 112 is used for driving the organic material layer 111 to emit light; the organic material layer 111 is disposed between the pixel driving layer 112 and the viewing angle enlarging layer 120, and the organic material layer 112 emits light in a direction away from the pixel driving layer 112.
When the light emitting mode of the display panel 100 is bottom emission, the metal surface package is used as the package layer, so that light can only be emitted from the bottom. Referring to fig. 8, fig. 8 is an eighth structural schematic diagram of a display panel according to an embodiment of the present disclosure. In one embodiment, the organic light emitting layer 110 may include an organic material layer 111 and a pixel driving layer 112: wherein the organic material layer 111 is for emitting light; the pixel driving layer 112 is used for driving the organic material layer 111 to emit light; the pixel driving layer 112 is disposed between the organic material layer 111 and the viewing angle enlarging layer 120, and the organic material layer 111 emits light toward the pixel driving layer 112. The display panel 100 further includes a second glass substrate 170 and a second buffer layer 180, the second glass substrate 170 is disposed on the side of the pixel driving layer 112 away from the organic material layer 111, and the second buffer layer 180 is disposed between the second glass substrate 170 and the view angle enlarging layer 120. In order to ensure process stability, a second buffer layer 180 may be disposed on the second glass substrate 170, and then the viewing angle enlargement layer 120 may be disposed on the second buffer layer 180.
Optionally, in order to ensure the contact characteristic between the viewing angle expanding layer 120 and the circular polarizer 140, the third inorganic film 130 is formed on the viewing angle expanding layer 120, so that the adhesion between the circular polarizer 140 and the viewing angle expanding layer 120 is better.
For example, the second buffer layer 180 may be formed by inkjet printing, slit coating printing, chemical vapor deposition, or the like.
It should be noted that the display panel 100 further includes a substrate, the substrate is used for carrying various material layers of the display panel 100, such as the organic light emitting layer 110, the viewing angle enlarging layer 120, the third inorganic film 130, the circular polarizer 140, the encapsulation layer 150, and the like, and the driving circuit is also disposed on the substrate, and the material of the substrate may be glass, PI, PET, or the like.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a view angle enlarging layer according to an embodiment of the present disclosure. The viewing angle enlarging layer 120 further includes a substrate 121, a plurality of dispersive particles 122 are distributed in the substrate 121, and the material of the substrate 121 is a light-transmitting material. The plurality of dispersing particles 122 can change a light transmission path so that light can be emitted from various angles, thereby enlarging an emitting angle of the light and thus enlarging a viewing angle of the display panel 100. For example, in order to fix the dispersion particles 122, the dispersion particles 122 may be dissolved in a high light transmittance material, and then a thin film may be deposited on the substrate 123 by using a cross-linking curing or solvent evaporation process. The display panel 100 may be an OLED display panel, and the viewing angle enlarging layer may be performed under a production process of the OLED display panel, so that the original OLED display panel with a larger viewing angle has a further improvement, and a full viewing angle is basically achieved.
Optionally, the material of the substrate 121 may be a flexible material, and the substrate 121 is doped with a plurality of dispersing particles 122, so that the viewing angle of the display panel 100 may be effectively improved, and flexible bending of the display panel 100 is also facilitated.
Referring to fig. 10, fig. 10 is a schematic diagram illustrating brightness attenuation of a display panel at different angles according to an embodiment of the present disclosure.
When a large-size display panel is watched, the brightness of the picture displayed by the display panel is different when the display panel is watched from the front or the side in the horizontal direction, and if the display panel has a good visual angle, the brightness difference value of the picture displayed by the display panel is smaller no matter which angle the display panel is watched from. In fig. 9, the abscissa is the different angles from the center in the horizontal direction facing the display panel, which are 0 °, 10 °, 20 °, 30 °, 40 °, 50 °, 60 °, 70 °, respectively, where 0 ° is the center position; the ordinate is the normalized luminance value. In the figure, 5 curves from top to bottom show that the display panel displays the brightness change curves of gray-scale pictures with different brightness when the display panel is viewed at different angles, and the brightness of the gray-scale pictures sequentially comprises white picture brightness, 80% white picture brightness, 60% white picture brightness, 40% white picture brightness and 20% white picture brightness from top to bottom, wherein when the display panel is displayed, the normalized brightness value is 1 when the display panel is viewed at an angle of 0 degrees, and as can be seen from figure 9, when the display panel is viewed at a larger angle deviated from the center, the tested brightness value has a smaller difference, in addition, the normalized brightness of the black picture brightness is 0, and when the display panel is viewed at different angles, the brightness of the black picture is unchanged. Therefore, no matter from which angle the display panel is watched, the brightness difference value of the display picture of the display panel is smaller, so that the display panel has a good visual angle, and the picture display accuracy can be kept at different viewing angles.
An embodiment of the present application further provides a display device, which includes the display panel in any one of the above embodiments. Illustratively, the display device may further include a circuit board electrically connected to the display panel to control the display of the display panel. It should be noted that the display panel may be an OLED display panel or an LCD display panel.
The display panel and the display device provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to explain the principles and embodiments of the present application, and the description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, 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 application.
Claims (10)
1. A display panel, comprising:
an organic light emitting layer for emitting light;
the visual angle expanding layer is arranged on one side of the organic light emitting layer, which emits light rays, a plurality of dispersion particles are arranged in the visual angle expanding layer, and the plurality of dispersion particles can change the transmission path of the light rays so as to expand the emergent angle of the light rays;
and the circular polaroid is arranged on one side of the visual angle expanding layer, which is far away from the organic light-emitting layer.
2. The display panel according to claim 1, further comprising an encapsulation layer provided between the viewing angle expansion layer and the organic light emitting layer.
3. The display panel according to claim 2, wherein the encapsulation layer comprises a first inorganic film, an organic film, and a second inorganic film, which are stacked, wherein the first inorganic film is disposed over the organic light-emitting layer, and wherein the viewing angle expansion layer is disposed over the second inorganic film.
4. The display panel of claim 2, wherein the encapsulation layer comprises a first glass substrate, and further comprising a first buffer layer disposed between the first glass substrate and the viewing angle expansion layer.
5. The display panel according to claim 1, further comprising a third inorganic film covering the viewing angle expansion layer.
6. The display panel according to any one of claims 1 to 5, wherein the organic light emitting layer comprises:
an organic material layer; and
the pixel driving layer is used for driving the organic material layer to emit light;
the organic material layer is arranged between the pixel driving layer and the visual angle expanding layer, and emits light in a direction deviating from the direction of the pixel driving layer.
7. The display panel according to claim 1 or 5, wherein the organic light emitting layer comprises:
an organic material layer; and
the pixel driving layer is used for driving the organic light emitting layer to emit light;
the pixel driving layer is arranged between the organic material layer and the visual angle expanding layer, and the organic material layer emits light towards the direction of the pixel driving layer;
the display panel further comprises a second glass substrate and a second buffer layer, the second glass substrate is arranged on one side, away from the organic material layer, of the pixel driving layer, and the second buffer layer is arranged between the second glass substrate and the view angle expanding layer.
8. The display panel according to claim 1, wherein the viewing angle expansion layer is formed by film inkjet printing, slit coating printing, or particle scattering.
9. The display panel according to claim 1, wherein the viewing angle enlarging layer further comprises a substrate, the plurality of the dispersive particles are distributed in the substrate, and the substrate is made of a light-transmitting material.
10. A display device, comprising:
a housing;
a display panel mounted to the housing, the display panel being as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220604729.XU CN217822861U (en) | 2022-03-18 | 2022-03-18 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220604729.XU CN217822861U (en) | 2022-03-18 | 2022-03-18 | Display panel and display device |
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| Publication Number | Publication Date |
|---|---|
| CN217822861U true CN217822861U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220604729.XU Active CN217822861U (en) | 2022-03-18 | 2022-03-18 | Display panel and display device |
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| Country | Link |
|---|---|
| CN (1) | CN217822861U (en) |
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- 2022-03-18 CN CN202220604729.XU patent/CN217822861U/en active Active
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