CN114023899A - Display panel and preparation method thereof - Google Patents
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- CN114023899A CN114023899A CN202111243083.3A CN202111243083A CN114023899A CN 114023899 A CN114023899 A CN 114023899A CN 202111243083 A CN202111243083 A CN 202111243083A CN 114023899 A CN114023899 A CN 114023899A
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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
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- 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
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Abstract
The application discloses a display panel and a preparation method thereof, the display panel comprises a substrate, a light emitting layer and a first reflecting layer, the substrate comprises a first area and a second area which are adjacently arranged, the light emitting layer is arranged on the substrate on the first area, and the first reflecting layer and the light emitting layer are arranged on the substrate on the same layer on the second area. In the application, the first reflecting layer is arranged between every two adjacent light emitting layers, so that the display effect of the display panel is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a preparation method thereof.
Background
With the development of science and technology, display panels are widely applied to various fields, but in the process of emitting an excitation light source to a quantum dot layer in the current display panel, light can be emitted all around, so that the light reaching the corresponding quantum dot layer is reduced, further the light conversion rate of the quantum dot layer is low, and further the display effect of a device is poor.
Disclosure of Invention
The embodiment of the application provides a display panel and a preparation method thereof, and aims to solve the problem that the display effect of the display panel in the prior art is poor.
The application provides a display panel, including:
a substrate comprising a first region and a second region disposed adjacent to each other;
a light emitting layer on the first region, the light emitting layer being disposed on the substrate; and
and the first reflecting layer and the light emitting layer are arranged on the substrate at the same layer on the second area.
Optionally, in some embodiments of the present application, the display panel further includes a second reflective layer disposed between the substrate and the light emitting layer.
Optionally, in some embodiments of the present application, a material of the first reflective layer and the second reflective layer includes one or a combination of boron nitride, silver, platinum, and aluminum.
Optionally, in some embodiments of the present application, the material of the first reflective layer and the second reflective layer further includes one or a combination of cyclomethicone, aminosiloxane, cyclomethicone and dimethicone.
Optionally, in some embodiments of the present application, the light emitting layer is an ultraviolet light emitting layer, and the display panel further includes an ultraviolet filter layer, where the ultraviolet filter layer is disposed on the light emitting layer and the first reflective layer.
Optionally, in some embodiments of the present application, the display panel further includes a quantum dot layer disposed on the light emitting layer.
Correspondingly, the application also provides a preparation method of the display panel, which comprises the following steps:
providing a substrate, wherein the substrate comprises a first area and a second area which are adjacently arranged;
forming a light emitting layer on the substrate on the first region;
and forming a first reflecting layer on the substrate on the second area, wherein the first reflecting layer and the light-emitting layer are arranged at the same layer.
Optionally, in some embodiments of the present application, after the step of providing a substrate and before the step of forming a light emitting layer on the substrate, the method further includes:
a second reflective layer is formed on the substrate.
Optionally, in some embodiments of the present application, the light emitting layer is an ultraviolet light emitting layer; after the step of forming the first reflective layer on the substrate, the method includes:
and forming an ultraviolet filter layer on the luminous layer and the first reflecting layer.
Optionally, in some embodiments of the present application, the step of forming a first reflective layer on the substrate includes:
and arranging a material of a first reflecting layer on the substrate, and carrying out heat treatment on the material of the first reflecting layer to form the first reflecting layer.
The application discloses a display panel and a preparation method thereof, the display panel comprises a substrate, a light emitting layer and a first reflecting layer, the substrate comprises a first area and a second area which are adjacently arranged, the light emitting layer is arranged on the substrate on the first area, and the first reflecting layer and the light emitting layer are arranged on the substrate on the same layer on the second area. The luminescent layer and the first reflecting layer form a light source, and the first reflecting layer is arranged around the luminescent layer, so that light emitted by the luminescent layer is prevented from being dispersed all around, the light emitted by the luminescent layer is gathered, the light quantity reaching the quantum dot layer is improved, the emission intensity of the quantum dot layer is enhanced, and the display effect of the display panel is improved. The second reflecting layer is arranged between the substrate and the light emitting layer, light emitted by the light emitting layer is further prevented from being dispersed all around, the light emitted by the light emitting layer is gathered, the light quantity reaching the quantum dot layer is further improved, the emission intensity of the quantum dot layer is further enhanced, and the display effect of the display panel is further improved. The additional material is added into the main body material, so that the main body material is more stable, the reflection effect of the first reflection layer is further improved, light rays are gathered, the light quantity reaching the quantum dot layer is further increased, and the display effect of the display panel is further improved. The filter layers are arranged on the red quantum dot layer and the green quantum dot layer, and because the light transmittance of the filter layers is almost zero under the wavelength of 500nm and is close to 100% under the wavelength of 500nm, residual ultraviolet rays cannot penetrate through the filter layers, and red light and green light can penetrate through the filter layers, so that the harm caused by the ultraviolet light emitting layers is eliminated.
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 plan view of a display panel provided in an embodiment of the present application.
Fig. 2 is a schematic structural diagram of the display panel of fig. 1 along line AB.
Fig. 3 is a schematic flowchart of a display panel according to an embodiment of the present application.
Fig. 4 is a schematic view of a flow structure of a display panel according to an 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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device. In the present application, the "reaction" may be a chemical reaction or a physical reaction.
The embodiment of the application provides a display panel and a preparation method thereof. The display panel comprises a substrate, a light emitting layer and a first reflecting layer, wherein the light emitting layer and the first reflecting layer form a light source of the display panel, the substrate comprises a first area and a second area which are adjacently arranged, the light emitting layer is arranged on the substrate on the first area, and the first reflecting layer is arranged on the substrate on the second area.
In the application, the first reflecting layer is arranged between every two adjacent light emitting layers to form the light source, so that the display effect of the display panel is improved.
The following are detailed below.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic plan view of a display panel according to an embodiment of the present disclosure. Fig. 2 is a schematic structural diagram of the display panel of fig. 1 along line AB. The present application provides a display panel 10. The display panel 10 includes a substrate 100, a light emitting layer 200, a first reflective layer 300, a quantum dot layer 400, and an ultraviolet filter layer 500.
The substrate 100 has several. Each substrate 100 includes a first region 101 and a second region 102 disposed around the first region 101.
The light emitting layer 200 has several. On the first region 101, a light emitting layer 200 and the light emitting layer 200 are disposed on a substrate 100 at the same layer. The light emitting layer 200 includes an ultraviolet light emitting layer and a blue light emitting layer. In the present embodiment, an ultraviolet light emitting layer 200 is disposed on a substrate 100, and a blue light emitting layer is disposed on a substrate 100. Wherein the ultraviolet light emitting layer is a 45mil × 45mil ultraviolet light emitting layer with 370nm emission peak.
The first reflective layer 300 has several. The light emitting layer 200 and the first reflective layer 300 constitute a light source. On the second region 102, a first reflective layer 300 is disposed on a substrate 100. The material of the first reflective layer 300 includes a host material. The main body material comprises one or more of boron nitride, silver, platinum and aluminum. In this embodiment, the host material comprises boron nitride.
In the present application, the first reflective layer 300 is disposed around the light emitting layer 200 to form a light source, so that the light emitted from the light emitting layer 200 is prevented from being dispersed all around, that is, the light of the light emitting layer 200 that is not absorbed by the quantum dot layer 400 increases the amount of light reaching the quantum dot layer 400, and further, the emission intensity of the quantum dot layer 400 is enhanced, and the display effect of the display panel 10 is improved.
In one embodiment, the material of the first reflective layer 300 further comprises additional materials. The additional material comprises one or more of cyclomethicone, aminosiloxane, cyclomethicone and polydimethylsiloxane. In the material of the first reflective layer 300, the percentage of the additional material is 10% to 40%. Specifically, in the material of the first reflective layer 300, the percentage of the additional material may be 10%, 20%, 30%, 35%, 40%, or the like. In the present embodiment, the percentage of the additional material in the material of the first reflective layer 300 is 25%. In the present application, in the material of the first reflective layer 300, the percentage of the additional material is set to 10% to 40%, which improves the stability of the main material, and further improves the reflective effect of the first reflective layer 300, and further improves the display effect of the display panel 10. If the percentage of the additional material is not between 10% and 40%, the main material is stable, and the reflection effect of the first reflective layer 300 is affected, and the display effect of the display panel 10 is affected.
In this application, add additional material at the host material for the host material is more stable, further improves the reflex action of first reflection stratum 300, makes light gather together, and the further increase reaches the light of quantum dot layer 400, has further improved display panel 10's display effect.
In one embodiment, the included angle between the sidewall of the first reflective layer 300 close to the light emitting layer 200 and the substrate is 60-85 degrees. Specifically, the included angle between the sidewall of the first reflective layer 300 close to the light emitting layer 200 and the substrate may be 60 degrees, 65 degrees, 70 degrees, 76 degrees, 85 degrees, or the like. The included angle between the sidewall of the first reflective layer 300 close to the light emitting layer 200 and the substrate is set to be 60 degrees to 85 degrees, so as to further improve the reflection effect of the first reflective layer 300, and further improve the display effect of the display panel 10.
The quantum dot layer 400 is formed on an ultraviolet light emitting layer and a first reflective layer 300. Quantum dot layer 400 includes a red quantum dot layer, a green quantum dot layer, and a transparent quantum dot layer. A transparent quantum dot layer is disposed on the blue light emitting layer 200. The red quantum layer and the green quantum dot layer are disposed on the ultraviolet light emitting layer.
In an embodiment, there are air gaps between the light source and the quantum dot layer 400, that is, there are air gaps between the first reflective layer 300 and the luminescent layer 200 and the quantum dot layer 400, so that the light emitted from the light source can be fully utilized, and the utilization rate of the light source is further improved.
The ultraviolet filter layer 500 is disposed on the quantum dot layer 400. The ultraviolet filter layer 500 is a dichroic filter or a band pass filter. Specifically, a dichroic filter is disposed on a red quantum dot layer and a green quantum dot layer.
The substrate 100, the blue light emitting layer, the first reflective layer 300, and the transparent quantum dot layer 400 constitute a blue light emitting unit, the substrate 100, the ultraviolet light emitting layer, the first reflective layer 300, the red quantum dot layer, and the ultraviolet filter layer 500 constitute a red light emitting unit, the substrate 100, the ultraviolet light emitting layer, the first reflective layer 300, the green quantum dot layer 400, and the ultraviolet filter layer 500 constitute a green light emitting unit, and the blue light emitting unit, the red light emitting unit, and the green light emitting unit constitute the display panel 10.
In the application, the filter layers are arranged on the red quantum dot layer and the green quantum dot layer, the light transmittance of the filter layers to the wavelength of 500nm or less is almost zero, and the light transmittance to the wavelength of 500nm or more is close to 100%, so that residual ultraviolet rays cannot penetrate through the filter layers, red light and green light can penetrate through the filter layers, and the harm caused by the ultraviolet light emitting layers is eliminated.
In another embodiment, a second reflective layer is further disposed between the substrate 100 and the light emitting layer 200. The first reflective layer, the first reflective layer and the light emitting layer 200 constitute a light source. The second reflective layer is the same material as the first reflective layer 300. In this application, a second reflective layer is disposed between the substrate 100 and the light-emitting layer 200, so as to further prevent the light emitted from the light-emitting layer 200 from being dispersed around, so as to gather the light emitted from the light-emitting layer 200, further improve the amount of light reaching the quantum dot layer 400, further enhance the emission intensity of the quantum dot layer 400, and further improve the display effect of the display panel 10.
In another embodiment, the substrate 100 may be the same substrate 100, the substrate 100 having a display region and a non-display region adjacently disposed. For example, the ultraviolet light emitting layer and the blue light emitting layer 200 are both disposed on the same substrate 100 at intervals.
The application provides a display panel 10, through set up first reflection stratum 300 around luminescent layer 200, luminescent layer 200 and first reflection stratum 300 constitute the light source, avoid the light of luminescent layer 200 outgoing to disperse all around to gather together the light of luminescent layer 200 outgoing, improve the light quantity that reaches quantum dot layer 400, improved the utilization ratio of light source promptly, and then strengthened quantum dot layer 400's emission intensity, improved display panel 10's display effect. The second reflecting layer is arranged between the substrate 100 and the light emitting layer 200, the first reflecting layer 300, the second reflecting layer and the light emitting layer 200 form a light source, light emitted by the light emitting layer 200 is further prevented from being dispersed all around, the light emitted by the light emitting layer 200 is gathered, and therefore the utilization rate of the light source is further improved, the light quantity reaching the quantum dot layer 400 is further improved, the emission intensity of the quantum dot layer 400 is further enhanced, and the display effect of the display panel 10 is further improved. The additional material is added into the main body material, so that the main body material is more stable, the reflection effect of the first reflection layer 300 is further improved, light rays are gathered, the light rays reaching the quantum dot layer 400 are further increased, and the display effect of the display panel 10 is further improved. The filter layers are arranged on the red quantum dot layer 400 and the green quantum dot layer 400, and because the light transmittance of the filter layers is almost zero for wavelengths below 500nm and is close to 100% for wavelengths above 500nm, residual ultraviolet rays cannot penetrate through the filter layers, and red light and green light can penetrate through the filter layers, so that the harm caused by the ultraviolet light emitting layers is eliminated.
The present application further provides a method for manufacturing a display panel 10, including:
b11, providing a substrate, wherein the substrate comprises a first area and a second area which are adjacently arranged.
B12, forming a light emitting layer on the substrate in the first region.
B13, forming a first reflective layer on the substrate on the second area.
In this application, through forming first reflection stratum around the luminescent layer, luminescent layer and first reflection stratum constitute the light source, avoid the light of luminescent layer outgoing to disperse all around to gather together the light of luminescent layer outgoing, improved the utilization ratio of light source promptly, improve the light quantity that reaches quantum dot layer, and then strengthened the emission intensity on quantum dot layer, improved display panel's display effect, and improved display panel's encapsulation precision, and then improved display panel's performance.
The following is a detailed description:
referring to fig. 1, fig. 3 and fig. 4, fig. 3 is a schematic flow chart of a display panel according to an embodiment of the present disclosure. Fig. 4 is a schematic view of a flow structure of a display panel according to an embodiment of the present application. The present application further provides a method for manufacturing a display panel 10, including:
b11, providing a substrate, wherein the substrate comprises a first area and a second area which are adjacently arranged.
Specifically, the substrate 100 has several. Each substrate 100 includes a first region 101 and a second region 102 disposed around the first region 101.
B12, forming a light emitting layer on the substrate in the first region.
On the first region 101, a 45mil × 45mil ultraviolet light emitting layer having an emission peak of 370nm was mounted on a substrate 100 by ultrasonic welding.
B13, forming a first reflective layer on the substrate on the second area.
On the second region 102, a material of the first reflective layer 300 is spin-coated on the substrate 100 using a dispenser, and the material of the first reflective layer 300 is heat-treated to form the first reflective layer 300. The material of the first reflective layer 300 includes a host material. The main body material comprises one or more of boron nitride, silver, platinum and aluminum. The material of the first reflective layer 300 also includes additional materials. The additional material comprises one or more of cyclomethicone, aminosiloxane, cyclomethicone and polydimethylsiloxane. In this embodiment, the host material comprises boron nitride and the additional material is polydimethylsiloxane. It should be noted that the first reflective layer 300 is formed by spin coating, for example, it can be formed by chemical vapor deposition.
The temperature of the heat treatment is 50-80 ℃, specifically, the temperature of the heat treatment may be 50, 55, 64, 70, 76, or 80 ℃. In the present embodiment, the temperature of the heat treatment is 60 degrees celsius. The heat treatment time is 50 minutes to 80 minutes. Specifically, the time of the heat treatment may be 50 minutes, 60 minutes, 74 minutes, 80 minutes, or the like. In the present embodiment, the time for the heat treatment may be 60 minutes. The temperature of the heat treatment is set to 50-80 degrees centigrade, and the time of the heat treatment is set to 50-80 minutes, so that the first reflective layer 300 can be completely cured, the reflection effect of the first reflective layer 300 can be improved, and the display effect of the display panel 10 can be improved.
The light emitting layer 200 and the first reflective layer 300 constitute a light source.
A red quantum dot layer is formed on the ultraviolet light emitting layer and the first reflective layer 300.
The ultraviolet filter layer 500 is formed on the red quantum dot layer. The substrate 100, the ultraviolet light emitting layer, the first reflective layer 300, the red quantum dot layer, and the ultraviolet filter layer 500 constitute a red light emitting unit.
Then, a blue light emitting unit and a green light emitting unit were prepared as described above. The red light emitting unit, the blue light emitting unit, and the green light emitting unit constitute the display panel 10.
It should be noted that the order of preparing the red light-emitting unit, the blue light-emitting unit, and the green light-emitting unit is not limited. Alternatively, the blue light emitting unit may be formed first, and then the green light emitting unit and the red light emitting unit may be formed.
In the present application, the red light emitting unit, the blue light emitting unit, and the green light emitting unit are separately formed, and the packaging accuracy of the display panel 10 can be improved.
In another embodiment, the red light emitting unit, the blue light emitting unit, and the green light emitting unit may be formed on the same substrate 100, and the manufacturing process of the display panel 10 may be simplified.
In another embodiment, a second reflective layer is further disposed between the substrate 100 and the light emitting layer 200. The light emitting layer 200, the first reflective layer 300 and the second reflective layer constitute a light source. The second reflective layer is the same material as the first reflective layer 300. In this application, be provided with the second reflection stratum between substrate 100 and luminescent layer 200, further avoid the light of luminescent layer 200 outgoing to disperse all around to gather together the light of luminescent layer 200 outgoing, further improve the utilization ratio of light source promptly, thereby further improve the light quantity that reaches quantum dot layer 400, and then further strengthened quantum dot layer 400's emission intensity, further improved display panel 10's display effect.
The application provides a display panel 10 and a preparation method thereof, through set up first reflection stratum 300 around luminescent layer 200, luminescent layer 200 and first reflection stratum 300 constitute the light source, avoid the light of luminescent layer 200 outgoing to disperse all around to gather together the light of luminescent layer 200 outgoing, improve the light source utilization ratio promptly, improve the light quantity that reaches quantum dot layer 400, and then strengthened quantum dot layer 400's emission intensity, improved display panel 10's display effect. The second reflective layer is disposed between the substrate 100 and the light-emitting layer 200, so as to further prevent the light emitted from the light-emitting layer 200 from being dispersed around, so as to gather the light emitted from the light-emitting layer 200, that is, to further improve the utilization rate of the light source, thereby further improving the amount of light reaching the quantum dot layer 400, further enhancing the emission intensity of the quantum dot layer 400, and further improving the display effect of the display panel 10. The additional material is added into the main body material, so that the main body material is more stable, the reflection effect of the first reflection layer 300 is further improved, light rays are gathered, the light rays reaching the quantum dot layer 400 are further increased, and the display effect of the display panel 10 is further improved. The filter layers are arranged on the red quantum dot layer and the green quantum dot layer, and because the light transmittance of the filter layers is almost zero under the wavelength of 500nm and is close to 100% under the wavelength of 500nm, residual ultraviolet rays cannot penetrate through the filter layers, and red light and green light can penetrate through the filter layers, so that the harm caused by the ultraviolet light emitting layers is eliminated.
The display panel and the manufacturing method thereof provided by the embodiments of the present application are described in detail above, and the principle and the embodiment of the present application are explained herein by applying specific examples, and the description of the embodiments above is only used to help understanding 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:
a substrate comprising a first region and a second region disposed adjacent to each other;
a light emitting layer on the first region, the light emitting layer being disposed on the substrate; and
and the first reflecting layer and the light emitting layer are arranged on the substrate at the same layer on the second area.
2. The display panel according to claim 1, further comprising a second reflective layer disposed between the substrate and the light emitting layer.
3. The display panel according to claim 2, wherein the material of the first reflective layer and the second reflective layer comprises one or a combination of boron nitride, silver, platinum and aluminum.
4. The display panel according to claim 3, wherein the material of the first reflective layer and the second reflective layer further comprises one or more of cyclomethicone, aminosiloxane, cyclomethicone and polydimethylsiloxane.
5. The display panel according to claim 1, wherein the light emitting layer is an ultraviolet light emitting layer, and further comprising an ultraviolet filter layer provided on the light emitting layer and the first reflective layer.
6. The display panel of claim 5, further comprising a quantum dot layer disposed on the light emitting layer.
7. A method for manufacturing a display panel, comprising:
providing a substrate, wherein the substrate comprises a first area and a second area which are adjacently arranged;
forming a light emitting layer on the substrate on the first region;
and forming a first reflecting layer on the substrate on the second area, wherein the first reflecting layer and the light-emitting layer are arranged at the same layer.
8. The method according to claim 7, wherein after the step of providing a substrate and before the step of forming a light-emitting layer over the substrate, the method further comprises:
a second reflective layer is formed on the substrate.
9. The method for manufacturing a display panel according to claim 7, wherein the light-emitting layer is an ultraviolet light-emitting layer; after the step of forming the first reflective layer on the substrate, the method includes:
and forming an ultraviolet filter layer on the luminous layer and the first reflecting layer.
10. The method for manufacturing a display panel according to claim 9, wherein the step of forming a first reflective layer over the substrate includes:
and arranging a material of a first reflecting layer on the substrate, and carrying out heat treatment on the material of the first reflecting layer to form the first reflecting layer.
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