CN111312916B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111312916B CN111312916B CN201811519790.9A CN201811519790A CN111312916B CN 111312916 B CN111312916 B CN 111312916B CN 201811519790 A CN201811519790 A CN 201811519790A CN 111312916 B CN111312916 B CN 111312916B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/856—Arrangements for extracting light from the devices comprising reflective means
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/115—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising active inorganic nanostructures, e.g. luminescent quantum dots
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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Abstract
The invention provides a display panel and a display device, wherein the display panel comprises a plurality of light emitting units arranged on an array substrate, each light emitting unit comprises a first electrode layer, an organic light emitting layer and a second electrode layer which are sequentially laminated on the array substrate, and the organic light emitting layer comprises a plurality of sub-pixels; at least one sub-pixel comprises a light source and a quantum dot layer, wherein a blocking layer is arranged on the light emitting side of the light source, the blocking layer is parallel to the array substrate, and the quantum dot layer is arranged on the side face of the light source. The invention can effectively improve the luminous efficiency and the light-emitting brightness of the display panel.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
The display screen has been widely used in various fields such as portable electronic devices (for example, mobile communication terminals, tablet computers, electronic books, and navigation devices) and large-screen electronic devices, wherein an Organic Light-Emitting Diode (OLED) has been increasingly used in the display screen due to its excellent characteristics of low power consumption, high color saturation, wide viewing angle, thin thickness, flexibility, etc. Quantum Dots (QDs) luminescent materials are a new technology applied to the field of display screens. The quantum dot luminescent material obeys the quantum size effect, the property of the quantum dot luminescent material changes along with the size change of the quantum dot, when the quantum dot luminescent material is stimulated by light or electricity, the quantum dot luminescent material can emit colored light, the color of the light is related to the property of the light, and therefore the light emitted by the quantum dot luminescent material can be controlled by changing the size of the quantum dot luminescent material. The quantum dot luminescent material has the advantages of concentrated luminescent spectrum, high color purity, wide color gamut and the like. The quantum dot luminescent material is applied to the field of display screens, so that the color gamut of a traditional display screen can be greatly improved, and the color reduction capability of the display screen is enhanced.
In the prior art, a display screen using quantum dot materials includes a display panel, and in one typical design, the display panel includes a plurality of sub-pixels, wherein the sub-pixels include a backlight source and a quantum dot layer disposed above the backlight source, and light with a corresponding color is emitted by exciting the quantum dot layer above the backlight source.
However, the excitation light of the quantum dot layer needs to pass through the entire quantum dot layer, and a portion of the excitation light is re-absorbed by the quantum dot layer in this process, thereby causing low brightness and luminous efficiency of the display panel.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks in the prior art, an object of the present invention is to provide a display panel and a display device, which can effectively improve the light emitting efficiency and the light emitting brightness of the display panel.
An embodiment of the invention provides a display panel, which comprises a plurality of light emitting units arranged on an array substrate, wherein each light emitting unit comprises a first electrode layer, an organic light emitting layer and a second electrode layer which are sequentially stacked on the array substrate, and the organic light emitting layer comprises a plurality of sub-pixels;
at least one sub-pixel comprises a light source and a quantum dot layer, wherein a blocking layer is arranged on the light emitting side of the light source, the blocking layer is parallel to the array substrate, and the quantum dot layer is arranged on the side face of the light source.
According to the display panel provided by the embodiment of the invention, as the sub-pixel comprises the light source and the quantum dot layer arranged on the side surface of the light source, the light emitting side of the light source is provided with the blocking layer, and the blocking layer is mutually parallel to the array substrate, the light emitting direction of the light source is limited, so that the light source can emit light only from the side surface, and the light emitted from the side surface of the light source is emitted to the outside after passing through the quantum dot layer. Compared with the prior art, on the premise that the thicknesses of the quantum dot layers are equal, the light rays converted by the quantum dot layers in the embodiment only need to pass through the quantum dot layers with half thickness on average, so that the absorption rate of the light rays by the quantum dot layers is greatly reduced, and the luminous efficiency of the sub-pixels is improved. In addition, as the quantum dot layer is arranged on the side face of the light source, the length of the quantum dot layer along the direction parallel to the array substrate can be further increased, so that the light emitted by the light source can be fully absorbed by the quantum dot layer, the luminous efficiency of the sub-pixel is further improved, and the brightness of the whole display panel is improved.
As described above, in the display panel, optionally, an encapsulation material is filled between the quantum dot layer and the light source, and the refractive index of the encapsulation material is greater than that of air.
The packaging material with the refractive index larger than that of air is filled between the quantum dot layer and the light source, so that light emitted by the light source can be totally reflected at the interface between the packaging material and the external atmosphere, the light emitted by the light source is effectively prevented from directly radiating to the external environment, the color purity of the emergent light of the sub-pixel is improved, the occurrence of light leakage is reduced, and the image color gamut of the display panel is enlarged.
As described above, in the display panel, optionally, the length of the quantum dot layer in the direction perpendicular to the surface of the array substrate is greater than or equal to the length of the light source in the direction perpendicular to the surface of the array substrate.
The length of the quantum dot layer in the direction perpendicular to the array substrate is set to be greater than or equal to the length of the light source in the direction perpendicular to the array substrate, so that the absorption rate of the quantum dot layer to light emitted by the light source can be improved, and the light leakage phenomenon is reduced.
The display panel as described above, optionally, further comprises a black matrix between different sub-pixels, and a side of the quantum dot layer away from the light source abuts against the black matrix between the sub-pixel and an adjacent sub-pixel.
The side, far away from the light source, of the quantum dot layer is propped against the black matrix, so that light from the light source can be effectively prevented from entering the quantum dot layer in the adjacent sub-pixels, and luminescence of the quantum dot layer of the adjacent sub-pixels is induced, and luminescence crosstalk between pixels is caused. Since crosstalk of light emitted between the sub-pixels is eliminated, the image color purity and the color gamut width of the entire display panel are improved.
In the display panel, optionally, the front projection area of the barrier layer on the surface of the array substrate is greater than or equal to the front projection area of the light source on the surface of the array substrate.
The projection of the blocking layer in the direction vertical to the array substrate is set to be greater than or equal to the projection of the light source in the direction vertical to the array substrate, so that light emitted by the light source can be effectively prevented from being directly emitted from the light emitting side parallel to the direction of the array substrate, the occurrence of the light leakage phenomenon is reduced, and the color purity of the emitted light of the sub-pixels is improved; the projection of the blocking layer is larger than that of the light source, so that light emitted by the light source can be reflected after being irradiated to the blocking layer, and finally enters the quantum dot layer, and the brightness of the sub-pixels is further improved.
As with the display panel described above, optionally, the barrier layer extends to a side of the quantum dot layer facing the light source.
The blocking layer is directly extended to one side of the quantum dot layer, which faces the light source, so that the blocking layer is propped against the quantum dot layer, thereby further ensuring that light emitted by the light source can not be directly emitted from the light emitting side parallel to the direction of the array substrate, improving the color purity of light emitted by the sub-pixels and reducing the occurrence of light leakage.
In the display panel described above, optionally, the barrier layer is a metal film layer.
The barrier layer can be manufactured at one time by adopting a metal coating process, so that the manufacturing difficulty is effectively reduced; meanwhile, the metal film layer can be favorable for reflecting light on the surface of the metal film layer, so that the luminous efficiency and the light-emitting brightness of the display panel can be improved.
In the display panel, optionally, a cross section of the quantum dot layer parallel to the direction of the array substrate is annular, and the light source is disposed at the annular center of the quantum dot layer.
The light source is arranged in the center of the corresponding quantum dot layer, so that the distances from the light emitted by the light source to the quantum dot layer in all directions are equal, the brightness of the light emitted by the sub-pixels in all directions is equal, and the display image quality of the display panel is improved.
In the display panel described above, optionally, the light emitting direction of the organic light emitting layer is toward the first electrode layer or the second electrode layer.
The display panel of this embodiment may emit light from the top or from the bottom, and may be specifically determined according to actual needs.
The display panel as described above, optionally, the subpixels include a blue subpixel, a red subpixel, and a green subpixel.
When the sub-pixel is a blue sub-pixel, the sub-pixel can comprise a blue quantum dot layer and light sources of other colors, and the blue quantum dot layer is irradiated by the light sources to emit blue light; when the sub-pixel is a red sub-pixel, it may include a red quantum dot layer and a blue light source, and the red quantum dot layer is irradiated with blue light to emit red light; when the sub-pixel is a green sub-pixel, it may include a green quantum dot layer and a blue light source, and green light is emitted by irradiating the green quantum dot layer with blue light.
Another embodiment of the present invention provides a display device including the display panel described above.
The display device provided by the invention also has the advantages of the display panel because the display device comprises the display panel in the technical scheme, so the advantages of the display device provided by the invention are not repeated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, 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 display panel according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a display panel according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a display panel according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
fig. 5 is a schematic top view of a red sub-pixel according to an embodiment of the present invention.
Reference numerals:
100-an array substrate;
200-red subpixels;
210-a first light source;
220-red quantum dot layer;
230-a first barrier layer;
240-a first encapsulation material;
300-green subpixels;
310-a second light source;
320-green quantum dot layer;
330-a second barrier layer;
340-a second encapsulation material;
400-black matrix.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. The following embodiments and features of the embodiments may be combined with each other without conflict.
Example 1
Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present invention; please refer to fig. 1. The embodiment provides a display panel, including setting up a plurality of light emitting units on array substrate 100, every light emitting unit all includes the first electrode layer, organic luminescent layer and the second electrode layer of laminating in proper order setting on array substrate, and organic luminescent layer includes a plurality of sub-pixels, and at least one sub-pixel includes light source and quantum dot layer, and the light-emitting side of light source is provided with the barrier layer, and the barrier layer is parallel with array substrate 100, and the quantum dot layer sets up the side at the light source.
Specifically, the sub-pixels of the present embodiment may include a blue sub-pixel, a red sub-pixel, and a green sub-pixel. When the sub-pixel is a blue sub-pixel, the sub-pixel can comprise a blue quantum dot layer and light sources of other colors, and the blue quantum dot layer is irradiated by the light sources to emit blue light; when the sub-pixel is a red sub-pixel, it may include a red quantum dot layer and a blue light source, and the red quantum dot layer is irradiated with blue light to emit red light; when the sub-pixel is a green sub-pixel, it may include a green quantum dot layer and a blue light source, and green light is emitted by irradiating the green quantum dot layer with blue light.
This embodiment will be further described with reference to the typical blue light conversion of red and green light.
That is, the organic light emitting layer includes the blue sub-pixel, the red sub-pixel 200, and the green sub-pixel 300 in this embodiment.
The red sub-pixel 200 includes a first light source 210 and a red quantum dot layer 220, wherein a first blocking layer 230 is disposed on a light emitting side of the first light source 210, the first blocking layer 230 is parallel to a surface of the array substrate 100 on which the light emitting unit is disposed, and the red quantum dot layer 220 is disposed on a side surface of the first light source 210.
The green sub-pixel 300 includes a second light source 310 and a green quantum dot layer 320, the light emitting side of the second light source 310 is provided with a second blocking layer 330, the second blocking layer 330 is parallel to the surface of the array substrate 100 on which the light emitting unit is disposed, and the green quantum dot layer 320 is disposed on the side surface of the second light source 310.
Wherein, the first light source 210 and the second light source 310 are both blue light sources.
In the display panel provided by the embodiment, since the red sub-pixel 200 includes the first light source 210 and the red quantum dot layer 220 disposed on the side surface of the first light source 210, the light-emitting side of the first light source 210 is provided with the first blocking layer 230, and the first blocking layer 230 is parallel to the surface of the array substrate 100 on which the light-emitting unit is disposed, the light-emitting direction of the first light source 210 is limited, so that the first light source 210 can emit light only from the side surface, and the light emitted from the side surface of the first light source 210 is emitted to the outside after passing through the red quantum dot layer 220. Compared with the prior art, on the premise that the red quantum dot layers are equal in thickness, the light converted by the red quantum dot layer 220 in the embodiment only needs to pass through the red quantum dot layer 220 with half thickness on average, so that the absorption rate of the light by the red quantum dot layer 220 is greatly reduced, and the luminous efficiency of the red sub-pixel 200 is improved.
In addition, since the red quantum dot layer 220 is disposed on the side of the first light source 210, the length of the red quantum dot layer 220 along the direction parallel to the array substrate 100 can be increased, so that the light emitted by the first light source 210 can be fully absorbed by the red quantum dot layer 220, thereby further increasing the light emitting efficiency of the red sub-pixel 200.
Similarly, since the green sub-pixel 300 includes the second light source 310 and the green quantum dot layer 320 disposed on the side surface of the second light source 310, the light emitting side of the second light source 310 is provided with the second blocking layer 330, and the second blocking layer 330 is parallel to the surface of the array substrate 100 on which the light emitting unit is disposed, so as to limit the light emitting direction of the second light source 310, so that the second light source 310 can emit light only from the side surface, and the light emitted from the side surface of the second light source 310 is emitted to the outside after passing through the green quantum dot layer 320. Compared with the prior art, on the premise that the green quantum dot layers are equal in thickness, the light converted by the green quantum dot layer 320 in the embodiment only needs to pass through the green quantum dot layer 320 with half thickness on average, so that the absorptivity of the light by the green quantum dot layer 320 is greatly reduced, and the luminous efficiency of the green sub-pixel 300 is improved.
In addition, since the green quantum dot layer 320 is disposed on the side of the second light source 310, the length of the green quantum dot layer 320 along the direction parallel to the array substrate 100 can be increased, so that the light emitted by the second light source 310 can be fully absorbed by the green quantum dot layer 320, thereby further increasing the light emitting efficiency of the green sub-pixel 300.
Since the luminous efficiency of the red sub-pixel 200 and the green sub-pixel 300 of the present embodiment is significantly improved, the luminance of the entire display panel is improved.
In the above embodiments, the first light source 210 and the second light source 310 may be blue OLEDs, and it is clear to those skilled in the art that other suitable light sources may be used for the first light source 210 and the second light source 310. The first blocking layer 230 and the second blocking layer 330 are opaque layers, which can effectively prevent light from directly emitting from the light emitting side parallel to the direction of the array substrate 100.
Fig. 2 is a schematic diagram of a display panel according to another embodiment of the present invention; please refer to fig. 2. Further, the first encapsulation material 240 is filled between the red quantum dot layer 220 and the first light source 210 in the present embodiment; a second encapsulation material 340 is filled between the green quantum dot layer 320 and the second light source 310, and the refractive index of each of the first encapsulation material 240 and the second encapsulation material 340 is greater than that of air.
The first encapsulant 240 and the second encapsulant 340 in this embodiment are both transparent materials to facilitate light passing. The refractive indices of the first encapsulant 240 and the second encapsulant 340 may be the same or different, and the specific refractive index may be selected according to actual needs. For example, in an alternative embodiment, the first encapsulant 240 and the second encapsulant 340 may be selected to have equal refractive indices, with a specific refractive index being selected to be 1.1-4.
The packaging materials with refractive indexes larger than that of air are filled between the red quantum dot layer 220 and the first light source 210 and between the green quantum dot layer 320 and the second light source 310, so that light emitted by the first light source 210 and the second light source 310 can be totally reflected at the interface between the packaging materials and the outside atmosphere, light emitted by the first light source 210 and the second light source 310 is effectively prevented from directly radiating to the outside environment, the color purity of the light emitted by the red sub-pixel 200 and the green sub-pixel 300 is improved, the occurrence of blue light leakage is reduced, and the image color gamut of the display panel is enlarged.
FIG. 3 is a schematic diagram of a display panel according to another embodiment of the present invention; please refer to fig. 3. Further, in the present embodiment, the length of the red quantum dot layer 220 in the direction perpendicular to the surface of the array substrate 100 is greater than or equal to the length of the first light source 210 in the direction perpendicular to the surface of the array substrate 100; the length of the green quantum dot layer 320 in the direction perpendicular to the surface of the array substrate 100 is equal to or greater than the length of the second light source 310 in the direction perpendicular to the surface of the array substrate 100.
The surface of the array substrate 100 is a surface of the array substrate 100 on which the light emitting units are disposed; the height difference between the quantum dot layer and the light source is sufficient to avoid light leakage.
Setting the length of the red quantum dot layer 220 in the direction perpendicular to the array substrate 100 to be equal to or greater than the length of the first light source 210 in the direction perpendicular to the array substrate 100 can improve the absorptivity of the red quantum dot layer 220 to the light emitted by the first light source 210, and reduce the occurrence of blue light leakage. Similarly, the length of the green quantum dot layer 320 in the direction perpendicular to the array substrate 100 is set to be equal to or greater than the length of the second light source 310 in the direction perpendicular to the array substrate 100, so that the absorptivity of the green quantum dot layer 320 to the light emitted by the second light source 310 can be improved, and the occurrence of blue light leakage phenomenon can be reduced.
Further, referring to fig. 1-3, the display device further includes a black matrix between different sub-pixels, and one side of the red quantum dot layer 220 away from the first light source 210 abuts against the black matrix 400 between the red sub-pixel 200 and the adjacent sub-pixel; the side of the green quantum dot layer 320 remote from the second light source 310 abuts on the black matrix 400 between the green sub-pixel 300 and the adjacent sub-pixel.
The side of the red quantum dot layer 220 far away from the light source is propped against the black matrix 400, so that the situation that blue light emitted from the first light source 210 is injected into the green quantum dot layer 320 in the adjacent green pixels to induce the luminescence of the green quantum dot layer 320 to cause the luminescence crosstalk between the pixels can be effectively avoided; the side of the green quantum dot layer 320 far away from the light source is abutted against the black matrix 400, so that the situation that blue light from the second light source 310 is injected into the red quantum dot layer 220 in the adjacent red pixels to induce the luminescence of the red quantum dot layer 220 to cause the luminescence crosstalk between the pixels can be effectively avoided. Since crosstalk of light emitted from the red and green sub-pixels is eliminated, the image color purity and the color gamut width of the entire display panel are improved.
Further, referring to fig. 1 to 3, in the present embodiment, the front projection area of the first barrier layer 230 on the surface of the array substrate 100 is greater than or equal to the front projection area of the first light source 210 on the surface of the array substrate 100; the orthographic projection area of the second barrier layer 330 on the surface of the array substrate 100 is greater than or equal to the orthographic projection area of the second light source 310 on the surface of the array substrate 100.
The projection of the first blocking layer 230 in the direction perpendicular to the array substrate 100 is set to be greater than or equal to the projection of the first light source 210 in the direction perpendicular to the array substrate 100, so that the light emitted by the first light source 210 can be effectively prevented from being directly emitted from the light emitting side parallel to the direction of the array substrate 100, the occurrence of blue light leakage is reduced, and the light emitting purity of the red sub-pixel 200 is improved; the portion of the first barrier layer 230 projected larger than the portion of the first light source 210 projected can also enable the light emitted by the first light source 210 to be reflected after being irradiated onto the first barrier layer 230, and finally enter the red quantum dot layer 220, so as to further improve the brightness of the red sub-pixel.
Similarly, the projection of the second blocking layer 330 in the direction perpendicular to the array substrate 100 is set to be greater than or equal to the projection of the second light source 310 in the direction perpendicular to the array substrate 100, so that the light emitted by the second light source 310 can be effectively prevented from being directly emitted from the light emitting side parallel to the direction of the array substrate 100, the occurrence of the light leakage phenomenon is reduced, and the light emitting purity of the green sub-pixel 300 is improved; the portion of the second blocking layer 330 projected larger than the portion projected by the second light source 310 can also enable the light emitted by the second light source 310 to be reflected after being irradiated to the second blocking layer 330, and finally enter the green quantum dot layer 320, so as to further improve the brightness of the light emitted by the green sub-pixel.
Fig. 4 is a schematic structural diagram of a display panel according to another embodiment of the present invention; please refer to fig. 4. Further, the first blocking layer 230 in the present embodiment extends to a side of the red quantum dot layer 220 facing the first light source 210; the second blocking layer 330 extends to a side of the green quantum dot layer 320 facing the second light source 310.
The first blocking layer 230 is directly extended to the side of the red quantum dot layer 220 facing the first light source 210, so that the red quantum dot layer 220 is propped against the first blocking layer, thereby further ensuring that the light emitted by the first light source 210 is not directly emitted from the light emitting side parallel to the direction of the array substrate 100, improving the color purity of the light emitted by the red sub-pixel 200, and reducing the occurrence of blue light leakage; the second blocking layer 330 is directly extended to the side of the green quantum dot layer 320 facing the second light source 310, so that the second blocking layer is propped against the green quantum dot layer 320, thereby further ensuring that the light emitted by the second light source 310 is not directly emitted from the light emitting side parallel to the direction of the array substrate 100, improving the color purity of the light emitted by the green sub-pixel 300, and reducing the occurrence of blue light leakage.
Further, the first barrier layer 230 and the second barrier layer 330 in this embodiment may be metal films.
The first barrier layer 230 and the second barrier layer 330 can be manufactured at one time by adopting a metal coating process, so that the manufacturing difficulty is effectively reduced; meanwhile, the metal film layer can be favorable for reflecting light on the surface of the metal film layer, so that the luminous efficiency and the light-emitting brightness of the display panel can be improved.
FIG. 5 is a schematic top view of a red sub-pixel according to an embodiment of the present invention; please refer to fig. 5. Further, the red quantum dot layer 220 has a ring shape in cross section parallel to the array substrate 100, and the first light source 210 is disposed at the center of the ring shape of the red quantum dot layer 220.
Also, the green quantum dot layer 320 may have a circular cross section in a direction parallel to the array substrate 100, and the second light source 310 is disposed at the circular center of the green quantum dot layer 320.
The first light source 210 and the second light source 310 are disposed at the centers of the respective corresponding quantum dot layers, so that the distances from the light emitted by the light sources to the quantum dot layers in all directions are equal, and the brightness of the light emitted by the corresponding pixels in all directions is equal, thereby improving the display image quality of the display panel.
Further, in the present embodiment, the light emitting direction of the organic light emitting layer faces the first electrode layer or the second electrode layer. That is, the display panel of this embodiment may emit light from the top or from the bottom, and may be specifically determined according to actual needs.
Example two
The present embodiment provides a display device including the display panel according to the first embodiment. The display device can be a product or a component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame or a navigator.
The display device provided in this embodiment also has higher luminous efficiency, color gamut width and brightness, and the advantages of the display device provided in this embodiment are not repeated here.
In the description of the present invention, 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", "axial", "radial", "circumferential", 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 invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are merely used for convenience in describing the various elements and are not to be construed as indicating or implying a sequential relationship, relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The display panel is characterized by comprising a plurality of light emitting units arranged on an array substrate, wherein each light emitting unit comprises a first electrode layer, an organic light emitting layer and a second electrode layer which are sequentially stacked on the array substrate, and the organic light emitting layer comprises a plurality of sub-pixels;
at least one sub-pixel comprises a light source and a quantum dot layer, wherein a blocking layer is arranged on the light emitting side of the light source, the blocking layer is parallel to the array substrate, and the quantum dot layer is arranged on the side face of the light source;
the barrier layer extends to a side of the quantum dot layer facing the light source;
and an encapsulation material is filled between the quantum dot layer and the light source, and the refractive index of the encapsulation material is larger than that of air.
2. The display panel of claim 1, wherein a length of the quantum dot layer in a direction perpendicular to the array substrate surface is greater than or equal to a length of the light source in a direction perpendicular to the array substrate surface.
3. The display panel of claim 2, further comprising a black matrix between different sub-pixels, wherein a side of the quantum dot layer remote from the light source abuts against the black matrix between the sub-pixel and an adjacent sub-pixel.
4. A display panel according to any of claims 1-3, wherein the forward projected area of the barrier layer on the surface of the array substrate is larger than the forward projected area of the light source on the surface of the array substrate.
5. The display panel of claim 1, wherein the barrier layer is a metal film layer.
6. The display panel according to claim 1, wherein a cross section of the quantum dot layer parallel to the array substrate direction is ring-shaped, and the light source is disposed at a ring-shaped center of the quantum dot layer.
7. The display panel according to claim 1, wherein a light emitting direction of the organic light emitting layer is toward the first electrode layer or the second electrode layer.
8. A display device comprising the display panel according to any one of claims 1-7.
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| CN201811519790.9A CN111312916B (en) | 2018-12-12 | 2018-12-12 | Display panel and display device |
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| CN113363276B (en) * | 2021-05-28 | 2022-11-22 | 业成科技（成都）有限公司 | Display panel and manufacturing method thereof |
| CN113991001B (en) * | 2021-10-21 | 2023-08-15 | 合肥维信诺科技有限公司 | Display panel, preparation method thereof and display device |
| CN114664992B (en) * | 2022-03-22 | 2022-11-22 | 惠科股份有限公司 | Pixel unit and display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102713730A (en) * | 2009-10-21 | 2012-10-03 | Qd思路讯公司 | Display device using quantum-dot and fabrication method thereof |
| CN105097870A (en) * | 2014-05-16 | 2015-11-25 | 株式会社日本显示器 | Display device |
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| JP4504645B2 (en) * | 2003-08-27 | 2010-07-14 | 明義 三上 | Combined light emitting device |
| US10553648B2 (en) * | 2016-06-30 | 2020-02-04 | Innolux Corporation | Light-emitting diode display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102713730A (en) * | 2009-10-21 | 2012-10-03 | Qd思路讯公司 | Display device using quantum-dot and fabrication method thereof |
| CN105097870A (en) * | 2014-05-16 | 2015-11-25 | 株式会社日本显示器 | Display device |
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