CN220830644U - Display panel and display device - Google Patents
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- CN220830644U CN220830644U CN202322070687.3U CN202322070687U CN220830644U CN 220830644 U CN220830644 U CN 220830644U CN 202322070687 U CN202322070687 U CN 202322070687U CN 220830644 U CN220830644 U CN 220830644U
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
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Abstract
The utility model discloses a display panel and a display device. The display panel includes a substrate; the first electrode layer is arranged on the substrate and comprises a transparent electrode layer, a scattering adjustment layer and a reflecting layer which are arranged in a laminated mode; the light-emitting layer is positioned on one side of the first electrode layer away from the substrate; the scattering adjusting layer is used for refracting light rays emitted by the light emitting layer and light rays reflected by the reflecting layer. According to the technical scheme, the light emitting efficiency and the light extraction efficiency of the display panel can be improved, the current required by the display panel is smaller under the same brightness, and the service life of the display panel can be prolonged by arranging the scattering adjustment layer.
Description
Technical Field
The present utility model relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
In recent years, under the push of consumer demand, AMOLED (Active matrix organic LIGHT EMITTING diode) terminal product yield is in an explosive growth situation, and the global AMOLED industry is led to take a high-speed long-term.
The AMOLED display screen has become the first choice of the present middle-high-end mobile intelligent terminal product by virtue of technical advantages, but the AMOLED panel also encounters development bottlenecks, for example, the light-emitting rate of the AMOLED is only about 25%, the service life of the AMOLED is less than that of an LCD (Liquid CRYSTAL DDISPLAY), the phosphorescent material cannot be used for blue light emission, and the traditional packaging technology cannot meet the requirements of a folding screen and the like. In addition, notebook computers and vehicle-mounted AMOLED screens are increasingly demanded, so that long service life and high HDR (high power consumption) requirements are provided for OLED screens, and peak brightness of the screen is required to be higher than brightness of 1000nit, and the normal temperature service life is longer than 10000 hours.
In order to meet the above requirements, the organic luminescent materials with higher efficiency and better stability are generally replaced on the common structure of the OLED screen to meet the requirements of long service life and high brightness. However, the improvement caused by simply replacing the organic luminescent material is not obvious, and only 50% of the service life is usually improved, and the adverse effects of high frequency of research and development iteration, increased cost and the like are caused.
Disclosure of utility model
The utility model provides a display panel and a display device, which are used for improving the optical coupling efficiency of a luminous layer in the display panel, improving the light emitting efficiency of the display panel and prolonging the service life of the display panel.
According to an aspect of the present utility model, there is provided a display panel including:
a substrate;
The first electrode layer comprises a transparent electrode layer, a scattering adjustment layer and a reflecting layer which are stacked;
a light-emitting layer positioned on one side of the first electrode layer away from the substrate;
The scattering adjustment layer is used for refracting light rays emitted by the light emitting layer and light rays reflected by the reflecting layer.
Optionally, the transparent electrode layer includes an ITO layer.
Optionally, the scattering adjusting layer includes an inorganic transparent layer or an organic transparent layer.
Further, the scattering adjustment layer includes at least one of a silicon nitride layer, a silicon oxide layer, an aluminum oxide layer, a resin layer, and a polymethyl methacrylate layer.
Further, the display panel further comprises a second electrode layer and a light extraction layer, wherein the second electrode layer is positioned on one side of the light-emitting layer away from the substrate, and the light extraction layer is positioned on one side of the second electrode layer away from the substrate;
transparent quantum dots with refractive index larger than 1.7 are further arranged in the scattering adjustment layer.
Further, the transparent quantum dots include TIO 2、ZrO2 quantum dots.
Optionally, the reflective layer includes a metal reflective layer, and the thickness of the metal reflective layer is 100-200nm.
Optionally, the light emitting layer includes an organic light emitting layer.
Further, the thickness of the scattering adjusting layer is 50-80nm.
According to another aspect of the present utility model, there is provided a display device including the above display panel.
According to the technical scheme, the display panel comprises a substrate; the first electrode layer is arranged on the substrate and comprises a transparent electrode layer, a scattering adjustment layer and a reflecting layer which are arranged in a laminated mode; the light-emitting layer is positioned on one side of the first electrode layer away from the substrate; the scattering adjusting layer is used for refracting light rays emitted by the light emitting layer and light rays reflected by the reflecting layer. The scattering adjustment layer can make light pass through on the one hand, makes the light energy that sends from the luminescent layer reach the reflection stratum, at reflection stratum surface reflection, on the other hand carries out the refraction to the light that the luminescent layer sent and the light that the reflection stratum reflected, forms the multi-beam and interferes the light emission, can improve the luminous efficacy and the light extraction efficiency of display panel, and under the same luminance, the required electric current of display panel of this embodiment is littleer, can also improve display panel's life through setting up the scattering adjustment layer. In addition, the technical scheme of the utility model has the advantages of lower realization cost, convenient popularization and wider application range.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the utility model or to delineate the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of another display panel according to an embodiment of the present utility model;
Fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present utility model.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the utility model. Referring to fig. 1, the display panel includes a substrate 110, a first electrode layer 120 disposed on the substrate, the first electrode layer including a transparent electrode layer 1201, a scattering adjustment layer 1202, and a reflective layer 1203; a light emitting layer 130 located at a side of the first electrode layer 120 away from the substrate 110; the scattering adjustment layer 1202 is used for refracting the light emitted by the light emitting layer 130 and the light reflected by the reflecting layer 1203.
The light emitting layer 130 can emit light under the action of the transparent electrode layer 1201, a part of the light is directly emitted from the light emitting layer 130 to the side far away from the substrate 110, and a part of the light is emitted from the light emitting layer 130 to the side of the substrate 110, passes through the transparent electrode layer 1201, and enters the scattering adjustment layer 1202 and the reflective layer 1203. The reflective layer 1203 can reflect light emitted from the light emitting layer 130, so that the light is emitted again through the light emitting layer 130. The scattering adjustment layer 1202 is located between the transparent electrode layer 1201 and the reflective layer 1203, and can pass light, so that the light emitted from the light emitting layer 130 can reach the reflective layer 1203; on the other hand, the scattering adjustment layer 1202 may be doped with a high refractive material, and the light emitted from the light-emitting layer 130 and the light reflected by the reflective layer 1203 may be refracted to form a plurality of interference lights, which are emitted from the light-emitting layer 130. The light extraction efficiency and the light extraction efficiency of the display panel can be remarkably improved by providing the scattering adjustment layer 1202 between the transparent electrode layer 1201 and the reflective layer 1203, and the current required for the display panel of this embodiment is smaller at the same brightness, so the service life of the display panel can also be improved by providing the scattering adjustment layer 1202.
According to the technical scheme, the display panel comprises a substrate; the first electrode layer is arranged on the substrate and comprises a transparent electrode layer, a scattering adjustment layer and a reflecting layer which are arranged in a laminated mode; the light-emitting layer is positioned on one side of the first electrode layer away from the substrate; the scattering adjusting layer is used for refracting light rays emitted by the light emitting layer and light rays reflected by the reflecting layer. The scattering adjustment layer can make light pass through on the one hand, makes the light energy that sends from the luminescent layer reach the reflection stratum, at reflection stratum surface reflection, on the other hand carries out the refraction to the light that the luminescent layer sent and the light that the reflection stratum reflected, forms the multi-beam and interferes the light emission, can improve the luminous efficacy and the light extraction efficiency of display panel, and under the same luminance, the required electric current of display panel of this embodiment is littleer, can also improve display panel's life through setting up the scattering adjustment layer. In addition, the technical scheme of the utility model has the advantages of lower realization cost, convenient popularization and wider application range.
Fig. 2 is a schematic structural diagram of another display panel according to an embodiment of the present utility model. Further to the above embodiments, in the display panel 100, the transparent electrode layer 1201 may optionally include an ITO layer.
Specifically, the transparent electrode layer 1201 may be used as an anode layer of the display panel 100, i.e., an ITO layer is used as an anode layer of the display panel 100. The light extraction rate of the light emitting layer in the conventional AMOLED panel is about 25%, and the rest of light is lost due to the waveguide and the SPP mode (surface plasmon), so that in order to save the light coupling efficiency of 30% due to the SPP mode loss, the anode layer replaces the conventional pure Ag anode layer structure with the ITO layer, the light lost by the SPP mode of the transparent electrode layer 1201 and the light emitting layer 130 is reduced, and the light coupling efficiency of the display panel can be improved.
Optionally, the scatter adjustment layer 1202 includes an inorganic transparent layer or an organic transparent layer.
Specifically, the scattering adjustment layer 1202 may be made of an inorganic or organic transparent material, so as to form an inorganic transparent layer or an organic transparent layer, so that light can pass through the scattering adjustment layer 1202 conveniently, and light loss is avoided.
Optionally, the scattering adjustment layer 1202 includes at least one of a silicon nitride layer, a silicon oxide layer, an aluminum oxide layer, a resin layer, and a polymethyl methacrylate layer.
Specifically, a transparent material layer is formed for the silicon nitride layer, the silicon oxide layer, the aluminum oxide layer, the resin layer, and the polymethyl methacrylate layer to allow light to pass through the scattering adjustment layer 1202, and preferably, a polymethyl methacrylate layer is used as the scattering adjustment layer 1202.
Optionally, referring to fig. 2, the display panel 100 further includes a second electrode layer 140 and a light extraction layer 150, the second electrode layer 140 being located at a side of the light emitting layer 130 away from the substrate 110, the light extraction layer 150 being located at a side of the second electrode layer 140 away from the substrate 110; transparent quantum dots 12021 having a refractive index greater than 1.7 are also disposed in the scattering adjustment layer 1202.
The second electrode layer 140 may be used as a cathode layer of the display panel and located above the light emitting layer 130, and the light emitting layer 130 may emit colored light under the action of the transparent electrode layer 1201 and the second electrode layer 140. The light extraction layer 150 can effectively reduce the total reflection effect in the display panel, improve the proportion of light coupling to the external space, further improve the performance of the display panel, and effectively improve the light extraction rate of the device. The doping amount of the transparent quantum dots 12021 in the scattering adjustment layer 1202 may be 1% -5%, and by doping 1% -5% of the transparent quantum dots 12021 with refractive index greater than 1.7 in the scattering adjustment layer 1202, light emitted by the light emitting layer and light reflected by the reflecting layer can be refracted, so that a plurality of interference lights are formed and emitted from the display panel 100, and the light emitting efficiency of the display panel 100 is improved.
Optionally, transparent quantum dots 12021 include TIO 2、ZrO2 quantum dots.
Specifically, the transparent quantum dots 12021 include a mixed material of quantum dots including TIO 2、ZrO2 to increase the refractive efficiency of the scattering adjustment layer 1202 to light, and the transparent quantum dots 12021 may be transparent films formed of ZrO 2.
Optionally, the reflective layer 1203 includes a metal reflective layer having a thickness of 100-200nm.
Alternatively, the light emitting layer 130 includes an organic light emitting layer.
Specifically, the Organic Light Emitting layer may be an OLED (Organic Light-Emitting Diode), and under the action of an electric field formed by the transparent electrode layer 1201 and the second electrode layer 140, holes generated by the transparent electrode layer 1201 and electrons generated by the second electrode layer 140 move, are respectively injected into the hole transporting layer and the electron transporting layer, migrate to the Light Emitting layer in the OLED, and when the two Light Emitting layers meet each other in the OLED, energy excitons are generated, so that Light Emitting molecules are excited to finally generate visible Light in the Light Emitting layer of the display panel.
Optionally, the thickness of the scattering adjustment layer 1202 is 50-80nm.
In summary, the present utility model provides a display panel, in which the transparent electrode layer is used to replace the existing pure Ag anode layer structure, so that the SPP mode loss of the transparent electrode layer and the light emitting layer is reduced, and the optical coupling efficiency of the display panel is improved. The scattering adjustment layer is made of doped high-refractive-index materials, so that light can pass through the scattering adjustment layer, light emitted from the light-emitting layer can reach the reflecting layer, the light emitted from the light-emitting layer is reflected on the surface of the reflecting layer, the light emitted from the light-emitting layer and the light reflected by the reflecting layer are refracted on the other hand, multiple beams of interference light are formed to emit, the light emitting efficiency and the light extraction efficiency of the display panel can be improved, the current required by the display panel of the embodiment is smaller under the same brightness, and the service life of the display panel can be prolonged by arranging the scattering adjustment layer. In addition, the technical scheme of the utility model has lower cost, is convenient to popularize and has wider application range.
Fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present utility model. Referring to fig. 3, the display device 200 includes the display panel 100 in the above-described embodiment.
By using the display panel 100 in the above embodiment in the display device 200, the demand of the display device 200 for a display panel with a long lifetime and high brightness can be satisfied, while the power consumption of the display device 200 can be reduced.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present utility model may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present utility model are achieved, and the present utility model is not limited herein.
The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.
Claims (8)
1. A display panel, comprising:
a substrate;
The first electrode layer comprises a transparent electrode layer, a scattering adjustment layer and a reflecting layer which are stacked;
a light-emitting layer positioned on one side of the first electrode layer away from the substrate;
The scattering adjustment layer is used for refracting light rays emitted by the light-emitting layer and light rays reflected by the reflecting layer, and comprises an inorganic transparent layer or an organic transparent layer.
2. The display panel of claim 1, wherein the transparent electrode layer comprises an ITO layer.
3. The display panel according to claim 1, wherein the scattering adjustment layer includes at least one of a silicon nitride layer, a silicon oxide layer, an aluminum oxide layer, a resin layer, and a polymethyl methacrylate layer.
4. The display panel according to claim 1, further comprising a second electrode layer and a light extraction layer, wherein the second electrode layer is located on a side of the light emitting layer away from the substrate, and the light extraction layer is located on a side of the second electrode layer away from the substrate.
5. The display panel of claim 1, wherein the reflective layer comprises a metallic reflective layer having a thickness of 100-200nm.
6. The display panel of claim 1, wherein the light emitting layer comprises an organic light emitting layer.
7. The display panel according to claim 1, wherein the scattering adjustment layer has a thickness of 50-80nm.
8. A display device comprising the display panel of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322070687.3U CN220830644U (en) | 2023-08-02 | 2023-08-02 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322070687.3U CN220830644U (en) | 2023-08-02 | 2023-08-02 | Display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220830644U true CN220830644U (en) | 2024-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322070687.3U Active CN220830644U (en) | 2023-08-02 | 2023-08-02 | Display panel and display device |
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| Country | Link |
|---|---|
| CN (1) | CN220830644U (en) |
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- 2023-08-02 CN CN202322070687.3U patent/CN220830644U/en active Active
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