CN112993188A - Display panel and display device - Google Patents
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- CN112993188A CN112993188A CN202110176685.5A CN202110176685A CN112993188A CN 112993188 A CN112993188 A CN 112993188A CN 202110176685 A CN202110176685 A CN 202110176685A CN 112993188 A CN112993188 A CN 112993188A
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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
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/841—Self-supporting sealing arrangements
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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
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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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
- H10K59/40—OLEDs integrated with touch screens
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Abstract
The embodiment of the invention provides a display panel and display equipment, wherein the display panel comprises a polymer film layer and an optical adhesive layer; wherein at least one surface of at least one polymer thin film layer is provided with a refractive index transition layer, so that the refractive index transition layer is positioned between the polymer thin film layer and the optical adhesive layer; the refractive index transition layer has a refractive index lower than that of the polymer thin film layer and higher than that of the optical adhesive layer adjacent thereto. Because the refractive index transition layer is added on at least one surface of at least one polymer thin film layer, and the refractive index of the refractive index transition layer is lower than the refractive index of the polymer thin film layer and higher than the refractive index of the optical adhesive layer adjacent to the polymer thin film layer, when light is transmitted among the polymer thin film layer, the refractive index transition layer and the optical adhesive layer, the reflectivity of the light which is directly transmitted among the polymer thin film layer and the optical adhesive layer is reduced compared with the reflectivity of the light which is directly transmitted among the polymer thin film layer and the optical adhesive layer, and therefore the reflectivity of.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and display equipment.
Background
With the market demand and commercial value of flexible display panels increasing, flexible display devices such as folding mobile phones are receiving more and more attention. A cover plate of a conventional OLED (Organic Light-Emitting Diode) display panel is made of thick hard glass and cannot be bent, so that in order to realize bending, a flexible polymer film material is mainly used as the cover plate of the conventional flexible display panel. The flexible polymer film material has excellent optical performance and mechanical performance, and can not break and fatigue in multiple bending.
When the user uses above-mentioned display device, the apron of display device can cause the reflection to the light that external light source such as sunlight sent to influence user's visual experience and eye health, consequently, how to reduce display panel's reflectivity is a problem that needs to solve urgently.
Disclosure of Invention
An embodiment of the invention provides a display panel and a display device to reduce the reflectivity of the display panel. The specific technical scheme is as follows:
in a first aspect, embodiments of the present invention provide a display panel, where the display panel includes a polymer film layer and an optical adhesive layer;
wherein at least one surface of at least one polymer thin film layer is provided with a refractive index transition layer, so that the refractive index transition layer is positioned between the polymer thin film layer and the optical adhesive layer; the refractive index transition layer is lower than the polymer film layer and higher than the optical adhesive layer adjacent to the polymer film layer.
In one embodiment, the refractive index transition layer has a refractive index of 1.45 to 1.63.
In one embodiment, the refractive index transition layer has a thickness of 1nm to 1 mm.
In one embodiment, the refractive index transition layer has a thickness of 300nm to 80 μm.
In one embodiment, the polymer film layer includes at least one of a polyimide film, a polyester film, a cyclic olefin polymer film, and a polydimethylsiloxane film.
In one embodiment, the display panel is a flexible panel and the refractive index transition layer is selected from flexible transparent materials.
In one embodiment, the refractive index transition layer is at least one selected from uv curable glue, polymer silica gel, and resin.
In one embodiment, the outermost polymer film layer includes a hardened film on its outer surface.
In one embodiment, a polarizer, a touch layer, a light emitting layer, and a supporting substrate are sequentially disposed on an inner side of the innermost optical adhesive layer.
In a second aspect, an embodiment of the present invention provides a display device, where the display device includes the display panel described in any one of the first aspect above.
The embodiment of the invention has the following beneficial effects:
in the scheme provided by the embodiment of the invention, the display panel comprises polymer thin film layers and an optical adhesive layer, wherein at least one surface of at least one polymer thin film layer is provided with a refractive index transition layer, so that the refractive index transition layer is positioned between the polymer thin film layer and the optical adhesive layer, and the refractive index of the refractive index transition layer is lower than that of the polymer thin film layer and higher than that of the optical adhesive layer adjacent to the polymer thin film layer. Because the refractive index transition layer is added on at least one surface of at least one polymer thin film layer of the display panel, and the refractive index of the refractive index transition layer is lower than the refractive index of the polymer thin film layer and higher than the refractive index of the adjacent optical adhesive layer, the refractive index between the polymer thin film layer and the optical adhesive layer can be transited, so that when light is transmitted among the polymer thin film layer, the refractive index transition layer and the optical adhesive layer, compared with the reflectivity of the light directly transmitted among the polymer thin film layer and the optical adhesive layer, the reflectivity of the whole display panel is reduced. Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a graph of the reflectivity of the display panel according to the embodiment of FIG. 1 versus the refractive index of the refractive index transition layer;
fig. 3(a) is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3(b) is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3(c) is a schematic structural diagram of a display panel according to an embodiment of the invention;
fig. 4(a) is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 4(b) is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 4(c) is a schematic structural diagram of a display panel according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments given herein by one of ordinary skill in the art, are within the scope of the invention.
In order to reduce the reflectivity of the display panel, embodiments of the invention provide a display panel and a display device. A display panel according to an embodiment of the present invention will be described first.
As shown in fig. 1, a display panel includes a polymer film layer 131 and an optical adhesive layer 133;
wherein at least one surface of at least one polymer thin film layer 131 is provided with a refractive index transition layer 140 such that the refractive index transition layer 140 is positioned between the polymer thin film layer 131 and the optical adhesive layer 133; the refractive index transition layer 140 has a refractive index lower than that of the polymer thin film layer 131 and higher than that of the optical adhesive layer 133 adjacent thereto.
It can be seen that in the solution provided by the embodiment of the present invention, the display panel includes a polymer thin film layer and an optical adhesive layer, wherein at least one surface of at least one polymer thin film layer is provided with a refractive index transition layer, so that the refractive index transition layer is located between the polymer thin film layer and the optical adhesive layer, and the refractive index of the refractive index transition layer is lower than the refractive index of the polymer thin film layer and higher than the refractive index of the optical adhesive layer adjacent to the refractive index transition layer. Because the refractive index transition layer is added on at least one surface of at least one polymer thin film layer of the display panel, and the refractive index of the refractive index transition layer is lower than the refractive index of the polymer thin film layer and higher than the refractive index of the adjacent optical adhesive layer, the refractive index between the polymer thin film layer and the optical adhesive layer can be transited, so that when light is transmitted among the polymer thin film layer, the refractive index transition layer and the optical adhesive layer, compared with the reflectivity of the light directly transmitted among the polymer thin film layer and the optical adhesive layer, the reflectivity of the whole display panel is reduced.
Referring to fig. 1, a display panel provided in an embodiment of the present invention may include: the display panel comprises a support substrate 110, a light emitting layer 120 and a cover plate 130 which are sequentially stacked, wherein the cover plate 130 may comprise the polymer thin film layer 131 and a hardening film 132, and the hardening film 132 may be disposed on the outer surface of the outermost polymer thin film layer, and may play a role in increasing the hardness of the display panel and preventing the display panel from being damaged. The outermost polymer film layer is a polymer film layer on a side closest to a user when the display panel is in use, that is, a polymer film layer farthest away from a side opposite to the support substrate 110.
In one embodiment, the supporting substrate 110 may be a substrate having a heat dissipation property composed of a metal sheet, foam, and the like, wherein the metal sheet may be a copper sheet, a stainless steel sheet, and the like, and is not particularly limited herein.
The light emitting layer 120 may include a plurality of OLED light emitting devices for emitting light to form display contents after the display panel is powered on. The polymer film layer 131 may be a flexible polymer material film having high light transmittance and good optical properties, for example, at least one of a polyimide film, a polyester film, a cyclic olefin polymer film, and a polydimethylsiloxane film, so that the display panel can be bent.
In order to bond the cover plate 130 and the light emitting layer 120, an optical adhesive layer 133 may be disposed between the polymer thin film layer 131 and the light emitting layer 120, wherein the optical adhesive (OCA) may be unsaturated polyester, polyurethane adhesive, silicone gel, and the like, and is not limited in particular.
Fig. 1 only shows one polymer thin film layer, one optical adhesive layer, and one refractive index transition layer as an example, and the number of the polymer thin film layer, the optical adhesive layer, and the refractive index transition layer in the display panel provided by the embodiment of the present invention is not limited. The display panel can include a plurality of polymer thin film layers, and a plurality of polymer thin film layers can be connected through the optical layer, and above-mentioned refractive index transition layer be located between polymer thin film layer and the optical cement layer adjacent with this polymer thin film layer can, can only be provided with a refractive index transition layer, also can set up refractive index transition layer respectively between a plurality of polymer thin film layers and the optical cement layer adjacent with this polymer thin film layer, and this is all reasonable.
When external light sources such as sunlight irradiate the display panel, reflection and refraction phenomena can occur, the greater the reflection efficiency is, the greater the energy of light reflected by the display panel is, the content displayed in the display panel can not be seen clearly by a user, and the user's eyes are also damaged.
From the principles of reflection and refraction of light, when the light beam is close to normal incidence (the incident angle is about 0), the reflectivity calculation formula is as follows:
wherein n is1And n2The true refractive indices of the two media, i.e., the refractive index relative to vacuum, respectively. The light emitted by the light sources such as sunlight can be regarded as parallel light, when the light beams irradiate the display panel, the light beams are close to normal incidence, and the difference between the refractive index of the polymer film material and the refractive index of the optical cement is large, so that the reflectivity of the light beams when the light beams are incident to the optical cement layer from the polymer film layer or the reflectivity of the light beams when the light beams are incident to the polymer film layer from the optical cement layer are large according to the formula, and the reflectivity of the whole display panel is large.
Therefore, in order to reduce the reflectivity of the display panel, a refractive index transition layer may be disposed between the polymer thin film layer and the optical adhesive layer, and the refractive index transition layer may be a flexible transparent material, so that the display performance of the display panel may not be affected. The refractive index transition layer has a refractive index between that of the polymer thin film layer and that of the optical adhesive layer, so that the reflectivity of light propagating between the polymer thin film layer and the optical adhesive layer can be reduced.
In one embodiment, light is incident from the polymer thin film layer to the refractive index transition layer, and light which is not reflected is incident from the refractive index transition layer to the optical adhesive layer, assuming that the refractive index of the polymer thin film layer is n1Refractive index of the optical adhesive layer is n2The refractive index of the refractive index transition layer is n3Then, if there is no refractive index transition layer, the reflectivity of light incident from the polymer film layer to the optical adhesive layer is:
after the refractive index transition layer is arranged, light is incident to the refractive index transition layer from the polymer thin film layer and then is incident to the optical adhesive layer from the refractive index transition layer, and the total of the reflectivity of the light when the light is incident to the refractive index transition layer from the polymer thin film layer and the reflectivity when the light is incident to the optical adhesive layer from the refractive index transition layer is as follows:
if the reflectivity of the display panel is required to be reduced, R2 < R1 is required, and the solution according to the formula can determine when n is equal to2＜n3＜n1In this case, R2 < R1 can be ensured, so that the refractive index of the refractive index transition layer can be between the refractive index of the polymer thin film layer and the refractive index of the optical adhesive layer, and the reflectivity of the whole display panel can be reduced.
For example, if the refractive index of the polymer thin film layer is 1.63 and the refractive index of the optical adhesive layer is 1.45, the refractive index transition layer is not present, and the reflectance when light enters the optical adhesive layer from the polymer thin film layer can be calculated according to the above formula to obtain about 0.342% of R1. If the refractive index of the refractive index transition layer is 1.5, the reflectance R2 is about 0.057% after the refractive index transition layer is disposed, and the reflectance of the display panel is significantly reduced.
When the refractive index of the polymer thin film layer is 1.63 and the refractive index of the optical adhesive layer is 1.45, the reflectance R2 corresponding to the refractive index of the refractive index transition layer with different values can be calculated according to the above formula, and since the reflectance between other parts of the display panel is fixed, the reflectance can be regarded as a constant, and further a relationship curve between the reflectance of the display panel and the refractive index of the refractive index transition layer can be obtained, as shown in fig. 2, it can also be seen from fig. 2 that the reflectance of the display panel is the lowest when the refractive index of the refractive index transition layer is between the refractive index of the polymer thin film layer and the refractive index of the optical adhesive layer.
As an embodiment of the present invention, the polymer film layer may be a plurality of polymer film layers; an optical adhesive layer is arranged between the adjacent polymer thin film layers, and a refractive index transition layer is arranged on at least one surface of at least one polymer thin film layer, so that the refractive index transition layer is positioned between the polymer thin film layers and the optical adhesive layer.
In some display panels, multiple polymer film layers may be provided, for example, 2, 3, etc. An optical adhesive layer is disposed between adjacent polymer thin film layers to perform an adhesive function, and then in order to reduce the reflectivity of the display panel, a refractive index transition layer may be disposed between at least one polymer thin film layer and the adjacent optical adhesive layer.
In the case of 2 polymer thin film layers, as an embodiment, only one refractive index transition layer may be provided, and the specific arrangement may be three. Specifically, in the first embodiment, as shown in fig. 3(a), a refractive index transition layer 31 may be disposed between the first polymer thin film layer 301 and the first optical adhesive layer 302. In a second embodiment, as shown in fig. 3(b), a refractive index transition layer 32 may be disposed between the first optical glue layer 302 and the second polymer thin film layer 303. In a third embodiment, as shown in fig. 3(c), a refractive index transition layer 33 may be disposed between the second polymer thin film layer 303 and the second optical glue layer 304.
In the case of 2 polymer thin film layers, as an embodiment, two refractive index transition layers may be provided, and the specific arrangement may be three. Specifically, in the first embodiment, as shown in fig. 4(a), a first refractive index transition layer 41 may be disposed between the first polymer film layer 401 and the first optical adhesive layer 402, and a second refractive index transition layer 42 may be disposed between the first optical adhesive layer 402 and the second polymer film layer 403. In a second embodiment, as shown in fig. 4(b), a first refractive index transition layer 41 may be disposed between the first polymer film layer 401 and the first optical adhesive layer 402, and a second refractive index transition layer 43 may be disposed between the second polymer film layer 403 and the second optical adhesive layer 404. In a third embodiment, as shown in fig. 4(c), a second refractive index transition layer 42 may be disposed between the first optical glue layer 402 and the second polymer thin film layer 403, and a second refractive index transition layer 43 may be disposed between the second polymer thin film layer 403 and the second optical glue layer 404.
In the case of 2 polymer thin film layers, as an embodiment, three refractive index transition layers may be provided, and as shown in fig. 5, a first refractive index transition layer 51 may be provided between a first polymer thin film layer 501 and a first optical adhesive layer 502, a second refractive index transition layer 52 may be provided between the first optical adhesive layer 502 and a second polymer thin film layer 503, and a second refractive index transition layer 53 may be provided between the second polymer thin film layer 503 and a second optical adhesive layer 504.
In the case where there are more polymer thin film layers, the refractive index transition layer may be disposed in a manner similar to the above-described case where there are 2 polymer thin film layers, and various disposing manners may be employed, which is not particularly limited herein.
In order to further reduce the reflectivity of the display panel, as an implementation manner of the embodiment of the invention, as shown in fig. 6, the display panel may further include a polarizer 150. The polarizer 150 may be disposed between the light emitting layer 120 and the cover plate 130, and an optical adhesive layer is disposed between the polarizer 150 and the cover plate 130 for adhering the polarizer 150 and the cover plate 130.
The polarizer 150 may be a circular polarizer, and the like, and is not limited herein. Since many devices capable of reflecting light, such as metal electrodes, are disposed at positions of the light-emitting layer 120 inside the display panel, when sunlight is irradiated on the display panel, the devices may generate reflected light to irradiate the eyes of a user, so that the user cannot see the content displayed on the display panel, and even the health of the eyes is damaged.
After the polarizer is disposed between the light emitting layer 120 and the cover plate 130, the incident light is changed into circularly polarized light through the polarizer, the polarization direction of the circularly polarized light is changed after the circularly polarized light is reflected by the device, and the reflected light cannot be emitted through the polarizer when the reflected light passes through the polarizer again, so that the reflected light is prevented from irradiating eyes of a user, and the reflectivity of the display panel is further reduced.
As an implementation manner of the embodiment of the present invention, as shown in fig. 7, the display panel may further include a touch layer 160, the touch layer 160 may be disposed between the light emitting layer 120 and the polarizer 150, and the touch layer 160 and the polarizer 150 may be connected by an adhesive 170. That is to say, in the display panel, a polarizer, a touch layer, a light emitting layer and a supporting substrate may be sequentially disposed on an inner side of the innermost optical adhesive layer, where the innermost optical adhesive layer is a last optical adhesive layer on a side of the display panel away from a user when the display panel is in use, that is, an optical adhesive layer on a side closest to the supporting substrate.
The touch layer 160 may include a touch device such as a capacitor and an inductor, and a device for implementing a touch operation such as a touch circuit, which is not specifically limited herein. The touch layer 160 and the polarizer 150 may be connected by an adhesive 170, so that the display panel may implement a touch-sensitive function and a user may perform a touch operation. The adhesive 170 may be an adhesive material such as PSA (pressure sensitive adhesive), and is not particularly limited herein.
As an embodiment of the present invention, since the polyimide film is excellent in optical and mechanical properties and does not break or fatigue after being bent several times, the polymer film layer may be a polyimide film layer.
In order not to affect the display effect of the display panel, in one embodiment, the polymer film layer may be a transparent Polyimide (CPI) layer.
As an implementation of the embodiment of the present invention, the refractive index of the refractive index transition layer may be 1.45 to 1.63. Since the refractive index of the polymer thin film layer is generally about 1.63 and the refractive index of the optical adhesive is generally about 1.45, the refractive index of the refractive index transition layer may be 1.45 to 1.63, for example, 1.48, 1.50, 1.57, 1.60, etc., for the purpose of reducing the reflectance of the display panel, and is not particularly limited herein.
As an embodiment of the present invention, the refractive index transition layer may be at least one selected from a group consisting of an ultraviolet curing adhesive, a polymer silica gel, a resin, and polymethyl methacrylate.
Because the ultraviolet curing glue (UV glue) has the excellent characteristics of high curing speed, high strength after curing, strong viscosity, complete transparency after curing, no yellowing or whitening for a long time and the like, the UV curing glue is suitable for the OLED display panel, does not influence the display effect and performance of the display panel, and can be used as a refractive index transition layer.
As an embodiment of the present invention, the thickness of the refractive index transition layer may be 1nm to 1 mm. The thickness of the above-mentioned refractive index transition layer is generally greater than 1nm due to the limitation of the coating process, etc. The thickness of the refractive index transition layer is generally not more than 1mm in order not to excessively affect the display thickness.
In one embodiment, the thickness of the refractive index transition layer may be 300nm to 80 μm, for example, 500nm, 800nm, 20 μm, and the like, and is not particularly limited. The thickness of the refractive index transition layer is within the thickness range, the technical requirement on the coating process is not too strict, and the influence on the thickness of the display panel can be reduced as much as possible, so that the refractive index transition layer can be conveniently coated on the premise of ensuring that the reflectivity of the display panel is reduced, and the influence on the thickness of the display panel can be reduced as much as possible.
As an implementation manner of the embodiment of the present invention, the cover plate may further include a component beneficial to the display performance of the display panel, such as a blue film, and is not particularly limited herein.
For the display panel provided by the embodiment of the invention, in the preparation process, the light emitting layer can be prepared on a supporting substrate, and then the required material layers are sequentially arranged on the light emitting layer. Taking the display panel shown in fig. 3(a) as an example, an optical adhesive layer may be obtained by coating a layer of optical adhesive on the light emitting layer, and then a polymer thin film layer is covered on the optical adhesive layer, and then the polymer thin film layer is further coated with a layer of optical adhesive to obtain an optical adhesive layer, and then a refractive index transition layer is coated on the optical adhesive layer, and then a polymer thin film layer is covered on the refractive index transition layer, and finally a hardening film is sprayed on the polymer thin film layer, so as to prepare the display panel shown in fig. 3 (a).
For the display panel composed of other structures provided in the embodiments of the present invention, the preparation process is similar to the preparation process of the display panel shown in fig. 3(a), and only the refractive index transition layer is coated at different positions, which is not described herein again.
In the embodiment of the present invention, fig. 1, fig. 3(a) to fig. 7 are some schematic structural diagrams of the display panel provided by the embodiment of the present invention, which are all taken as examples of the display panel provided by the embodiment of the present invention, mainly showing improvement points of the embodiment of the present invention, the display panel may further include other components, such as a pixel electrode, a common electrode, a data line, a scan line, and the like, which are not shown in the above drawings, and the parts not shown do not affect understanding of the embodiment of the present invention. Fig. 1, 6, and 7 only show one polymer thin film layer and one refractive index transition layer, which are only examples and are not intended to limit the number of polymer thin film layers and refractive index transition layers in the display panel provided in the embodiment of the present invention.
Corresponding to the display panel, an embodiment of the present invention further provides a display device, which may include the display panel described in any of the embodiments above. The display device may be an electronic device such as a display screen, a mobile phone, a tablet computer, and a notebook computer, and is not particularly limited.
It can be seen that in the solution provided by the embodiment of the present invention, the display panel of the display device includes a polymer thin film layer and an optical adhesive layer, wherein at least one surface of at least one polymer thin film layer is provided with a refractive index transition layer, so that the refractive index transition layer is located between the polymer thin film layer and the optical adhesive layer, and the refractive index of the refractive index transition layer is lower than the refractive index of the polymer thin film layer and higher than the refractive index of the optical adhesive layer adjacent to the refractive index transition layer. Because the refractive index transition layer is additionally arranged on at least one surface of at least one polymer thin film layer of the display panel, and the refractive index of the refractive index transition layer is lower than that of the polymer thin film layer and higher than that of the adjacent optical adhesive layer, the refractive index between the polymer thin film layer and the optical adhesive layer can be transited, so that when light is transmitted among the polymer thin film layer, the refractive index transition layer and the optical adhesive layer, compared with the case that the light is directly transmitted between the polymer thin film layer and the optical adhesive layer, the reflectivity of the whole display panel is reduced, and the reflectivity of the display device is also reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the display device embodiment, since it is substantially similar to the display panel embodiment, the description is relatively simple, and for the relevant points, reference may be made to partial description of the display panel embodiment.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A display panel is characterized by comprising a polymer film layer and an optical adhesive layer;
wherein at least one surface of at least one polymer thin film layer is provided with a refractive index transition layer, so that the refractive index transition layer is positioned between the polymer thin film layer and the optical adhesive layer; the refractive index transition layer is lower than the polymer film layer and higher than the optical adhesive layer adjacent to the polymer film layer.
2. The display panel according to claim 1, wherein the refractive index of the refractive index transition layer is 1.45 to 1.63.
3. The display panel according to claim 1, wherein the refractive index transition layer has a thickness of 1nm to 1 mm.
4. The display panel according to claim 3, wherein the refractive index transition layer has a thickness of 300nm to 80 μm.
5. The display panel according to claim 1, wherein the polymer film layer comprises at least one of a polyimide film, a polyester film, a cyclic olefin polymer film, and a polydimethylsiloxane film.
6. The display panel of claim 1, wherein the display panel is a flexible panel and the refractive index transition layer is selected from flexible transparent materials.
7. The display panel of claim 1, wherein the refractive index transition layer is at least one selected from the group consisting of uv curable glue, polymer silica gel, and resin.
8. The display panel according to any one of claims 1 to 7, comprising a hardening film on an outer side surface of the outermost polymer film layer.
9. The display panel of claim 8, wherein a polarizer, a touch layer, a light emitting layer and a supporting substrate are sequentially disposed on the inner side of the innermost optical adhesive layer.
10. A display device characterized in that it comprises a display panel as claimed in any one of claims 1 to 9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI801985B (en) * | 2021-08-26 | 2023-05-11 | 大陸商業成科技（成都）有限公司 | Film display |
| WO2023108695A1 (en) * | 2021-12-13 | 2023-06-22 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1875296A (en) * | 2003-10-30 | 2006-12-06 | 3M创新有限公司 | Multilayer optical adhesives and articles |
| CN109979975A (en) * | 2019-03-15 | 2019-07-05 | 武汉华星光电半导体显示技术有限公司 | A kind of OLED display panel and preparation method thereof |
| CN111224016A (en) * | 2020-01-16 | 2020-06-02 | Oppo广东移动通信有限公司 | Packaging film layer, display screen and electronic equipment |
| CN112083596A (en) * | 2020-09-28 | 2020-12-15 | 京东方科技集团股份有限公司 | Display module, manufacturing method thereof and polaroid for display module |
-
2021
- 2021-02-09 CN CN202110176685.5A patent/CN112993188A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1875296A (en) * | 2003-10-30 | 2006-12-06 | 3M创新有限公司 | Multilayer optical adhesives and articles |
| CN109979975A (en) * | 2019-03-15 | 2019-07-05 | 武汉华星光电半导体显示技术有限公司 | A kind of OLED display panel and preparation method thereof |
| CN111224016A (en) * | 2020-01-16 | 2020-06-02 | Oppo广东移动通信有限公司 | Packaging film layer, display screen and electronic equipment |
| CN112083596A (en) * | 2020-09-28 | 2020-12-15 | 京东方科技集团股份有限公司 | Display module, manufacturing method thereof and polaroid for display module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI801985B (en) * | 2021-08-26 | 2023-05-11 | 大陸商業成科技（成都）有限公司 | Film display |
| WO2023108695A1 (en) * | 2021-12-13 | 2023-06-22 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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