CN112162653B - Display device, cover plate and optical adhesive - Google Patents
Display device, cover plate and optical adhesive Download PDFInfo
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- CN112162653B CN112162653B CN202011010008.8A CN202011010008A CN112162653B CN 112162653 B CN112162653 B CN 112162653B CN 202011010008 A CN202011010008 A CN 202011010008A CN 112162653 B CN112162653 B CN 112162653B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 41
- 239000000853 adhesive Substances 0.000 title claims description 27
- 230000001070 adhesive effect Effects 0.000 title claims description 27
- 239000011159 matrix material Substances 0.000 claims abstract description 75
- 239000002105 nanoparticle Substances 0.000 claims abstract description 51
- 239000000084 colloidal system Substances 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 33
- 229920001296 polysiloxane Polymers 0.000 claims description 18
- 229920000058 polyacrylate Polymers 0.000 claims description 16
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 9
- 230000009477 glass transition Effects 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000004568 cement Substances 0.000 abstract description 17
- 239000011258 core-shell material Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 81
- 239000000758 substrate Substances 0.000 description 18
- 239000010408 film Substances 0.000 description 14
- 229920001721 polyimide Polymers 0.000 description 10
- 239000012790 adhesive layer Substances 0.000 description 9
- -1 polysiloxane Polymers 0.000 description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 238000002310 reflectometry Methods 0.000 description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 6
- 125000005375 organosiloxane group Chemical group 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000962 poly(amidoamine) Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
The disclosure relates to the technical field of display, and provides a display device, a cover plate and optical cement. The optical cement may include a gel layer. The colloidal layer may include a matrix and nanoparticles doped to the matrix. The nanoparticle may include a core and a shell. The shell encapsulates the core to form a core-shell structure. Wherein the refractive index of the matrix is less than the refractive index of the shell or core. The display effect of the display device can be improved.
Description
Technical Field
The disclosure relates to the technical field of display, in particular to a display device, a cover plate and optical cement.
Background
With the rapid development of display technology, the organic electroluminescent display device has a wide application prospect due to the advantages of high response, high contrast, flexibility and the like, and particularly in the aspect of flexible display, the advantage of the organic electroluminescent display device can be reflected.
The organic electroluminescent display device generally includes a display panel, a touch substrate, a polarizer, a cover plate, and the like. The touch substrate is adhered to the display panel through optical adhesive. The polaroid is adhered to one side of the touch control substrate, which is opposite to the display panel, through optical cement. The cover plate is adhered to one side of the polaroid, which is opposite to the display panel, through optical cement. However, the existing display device has poor display effect.
Disclosure of Invention
The disclosure provides a display device, a cover plate and an optical adhesive, which can improve the display effect of the display device.
According to one aspect of the present disclosure, there is provided an optical adhesive comprising:
the colloid layer comprises a matrix and nano particles doped in the matrix, wherein the nano particles comprise a core body and a shell body coating the core body, and the refractive index of the matrix is smaller than that of the shell body or the core body.
Further, the refractive index of the matrix is smaller than the refractive index of the shell, the material of the matrix comprises an acrylic polymer, and the material of the shell comprises silicone.
Further, the refractive index of the matrix is less than the refractive index of the shell, and the glass transition temperature of the core is less than or equal to-40 ℃.
Further, the refractive index of the matrix is less than the refractive index of the core, the material of the matrix comprises an acrylic polymer, and the material of the core comprises a silicone.
Further, the refractive index of the matrix is less than the refractive index of the core, and the glass transition temperature of the shell is less than or equal to-40 ℃.
Further, the mass fraction of the nano particles in the colloid layer is 1.8% -2.5%.
According to one aspect of the present disclosure, there is provided a cover plate including:
a plurality of transparent flexible layers stacked;
the optical cement of any one of the above, wherein two adjacent transparent flexible layers among the plurality of transparent flexible layers are bonded through the colloid layer of the optical cement.
According to one aspect of the present disclosure, there is provided a cover plate including:
a plurality of transparent flexible layers stacked;
in the optical adhesive, two adjacent transparent flexible layers are bonded through the colloid layers of the optical adhesive, and refractive indexes of the two transparent flexible layers bonded through the colloid layers are smaller than that of the shell and larger than that of the matrix.
According to one aspect of the present disclosure, there is provided a cover plate including:
a plurality of transparent flexible layers stacked;
in the optical cement, two adjacent transparent flexible layers are bonded through the colloid layers of the optical cement, and refractive indexes of the two transparent flexible layers bonded through the colloid layers are smaller than that of the core body and larger than that of the matrix.
According to an aspect of the present disclosure, there is provided a display device including the cover plate of any one of the above.
The colloid layer of the optical cement comprises nano particles and a matrix, the nano particles are doped in the matrix, and the nano particles can comprise a core body and a shell body for coating the core body, and the refractive index of the shell body or the core body is larger than that of the matrix, so that the refractive index of the colloid layer containing the nano particles is improved, the display effect of the display device is improved, and meanwhile, the luminous efficiency and the luminous brightness of the display device are improved.
Drawings
Fig. 1 is a schematic view of an optical adhesive according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of nanoparticles in an optical cement according to an embodiment of the present disclosure.
Fig. 3 is a graph of results of a reversion test of an optical cement according to an embodiment of the present disclosure.
Fig. 4 is a schematic view of a cover plate of an embodiment of the present disclosure.
Fig. 5 is an optical path diagram of a cover plate of an embodiment of the present disclosure when used for a display device.
Fig. 6 is a schematic view of a display device according to an embodiment of the present disclosure.
Reference numerals illustrate: 1. a colloid layer; 101. a base; 102. a nanoparticle; 1021. a nucleus; 1022. a housing; 2. a first release film; 3. a second release film; 4. a transparent flexible layer; 5. a display panel; 6. a first adhesive layer; 7. a touch substrate; 8. a second adhesive layer; 9. a polarizer; 10. a third adhesive layer; 11. and a cover plate.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus consistent with some aspects of the disclosure as detailed in the accompanying claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
In the related art, a display device includes a display panel and a cover plate. The cover plate may include two colorless polyimide film layers disposed opposite to each other and a gel layer bonded between the two colorless polyimide film layers. According to the thin film interference principle, the reflectivity of the cover plate to light rays is as follows:
wherein i is 1 For incident angle, i 2 R is the refraction angle s Is the reflection coefficient of the S component of the light ray, R s Is the reflectivity of the S component of the light, r p Is the reflection coefficient of the P component of the light ray, R p Is the reflectivity of the P component of the light.
When incident angle i 1 When small, the law of refraction can be written as:
wherein n is 2 Refractive index of colorless polyimide film layer, n 1 Is the refractive index of the colloid layer. Based on this, R as described above p About equal to R s Therefore, the reflectivity of the cover plate to light is as follows:
when the intensity of the incident light is equal to 1, the refractive index of the colorless polyimide film layer is 1.62, and the refractive index of the colloid layer is 1.48, and the reflectivity of the obtained cover plate is 0.4%; if the colloid is replaced by the air film layer, that is, the refractive index 1.62 of the colorless polyimide film layer and the refractive index 1 of the air film layer are brought into the relational expression, the reflectivity of the cover plate is 5.6%, which is smaller than 0.4%, and the refractive index of the film layer between the two colorless polyimide film layers is lower as the refractive index of the film layer between the two colorless polyimide film layers is closer to the refractive index of the colorless polyimide film layer, so that the rainbow pattern problem of the cover plate due to the phase difference can be avoided. However, the reflectivity of the cover plate in this related art is still too high.
Embodiments of the present disclosure provide an optical adhesive. As shown in fig. 1 and 2, the optical cement may include a cement layer 1. The colloidal layer 1 may include a matrix 101 and nanoparticles 102 doped in the matrix 101. The nanoparticle 102 may include a core 1021 and a shell 1022. The shell 1022 encloses the core 1021 to form a core-shell structure. Wherein the refractive index of the matrix 101 is smaller than the refractive index of the shell 1022 or core 1021.
The colloid layer 1 of the optical cement of the embodiment of the present disclosure includes a nanoparticle 102 and a matrix 101, the nanoparticle 102 is doped in the matrix 101, and the nanoparticle 102 may include a core 1021 and a shell 1022 covering the core 1021, and since the refractive index of the shell 1022 or the core 1021 is greater than that of the matrix 101, the refractive index of the colloid layer 1 including the nanoparticle 102 is improved, thereby improving the display effect of the display device; meanwhile, since the refractive index of the gel layer 1 is increased, the refractive index of the gel layer 1 is closer to that of the colorless polyamidoamine, so that the reflectivity of the cover plate is reduced.
The following describes each part of the optical adhesive according to the embodiment of the present disclosure in detail:
the optical cement plays a role of bonding mainly through the colloid layer 1. The colloidal layer 1 may comprise a matrix 101 and nanoparticles 102, wherein:
the matrix 101 is the main component of the gel layer 1. The material of the substrate 101 may include an acrylic polymer to provide the substrate 101 with adhesion. The acrylic polymer may be a hydroxyl group-containing acrylic polymer. The hydroxyl group-containing acrylic polymer may include a hydroxyl group-containing acrylate. The refractive index of the matrix 101 may be 1.62, but the embodiment of the present disclosure is not particularly limited thereto.
The nanoparticles 102 are doped into the matrix 101 for modifying the matrix 101. The diameter of the nanoparticle 102 may be 50nm to 200nm, for example, 50nm, 80nm, 100nm, 150nm, but the present disclosure is not limited thereto. The nanoparticle 102 may be a core-shell structure that includes a core 1021 and a shell 1022 that encapsulates the core 1021. The core-shell structure may be prepared by a common precipitation method, a hydrothermal method, a sol-gel method, a sol-seed method or an emulsion polymerization method, and embodiments of the present disclosure will not be described in detail herein. The mass fraction of the nanoparticles 102 in the colloidal layer 1 may be 1.8% to 2.5%, for example 2%, but the disclosure is not limited thereto. In an embodiment of the present disclosure, the refractive index of the matrix 101 is smaller than the refractive index of the housing 1022, such that the refractive index of the matrix 101 doped with the nanoparticles 102 is greater than the refractive index of the matrix 101 not doped with the nanoparticles 102. Taking the substrate 101 as an example, the refractive index of the substrate 101 may be 1.62, the refractive index of the shell 1022 may be 1.63 to 1.65, and the refractive index of the core 1021 may be 1.41 to 1.5. Taking the example that the refractive index of the matrix 101 is smaller than that of the shell 1022, the glass transition temperature of the core 1021 is smaller than or equal to-40 ℃, so that the colloid layer 1 still has good flexibility at a lower temperature. Further, the glass transition temperature of the core 1021 may be-200 ℃ to-40 ℃. Wherein the glass transition temperature of the colloidal layer 1 including the nanoparticles 102 may be-200 ℃ to-40 ℃. Taking the example that the material of the base 101 includes an acrylic polymer, the material of the housing 1022 may include silicone, but the embodiment of the present disclosure is not particularly limited thereto. Further, taking the case 1022 as an example where the material of the shell includes siloxane, the material of the core 1021 may include one or more of alumina, polysiloxane, and titania. For example, the shell 1022 may be a silicone and the core 1021 may be a silicone. The polysiloxane may be an organosiloxane polymer. The organosiloxane polymer may be a non-crosslinked or crosslinked organosiloxane polymer. The crosslinked organosiloxane polymer may comprise one or more of crosslinked dimethylsiloxane, methylphenylsiloxane, diphenylsiloxane.
In another embodiment of the present disclosure, the refractive index of the matrix 101 is less than the refractive index of the core 1021, such that the refractive index of the matrix 101 doped with nanoparticles 102 is greater than the refractive index of the matrix 101 not doped with nanoparticles 102. Taking the substrate 101 as an example, the refractive index of the substrate 101 may be 1.62, the refractive index of the core 1021 may be 1.63-1.65, and the refractive index of the shell 1022 may be 1.41-1.5. Taking the example that the refractive index of the matrix 101 is smaller than that of the core 1021, the glass transition temperature of the shell 1022 is larger or smaller than-40 ℃ so that the colloid layer 1 still has good flexibility at a lower temperature. Further, the glass transition temperature of the housing 1022 may be-200 ℃ to-40 ℃. Taking the example that the material of the base 101 includes an acrylic polymer, the material of the core 1021 may include a siloxane, but the embodiment of the present disclosure is not particularly limited thereto. Further, taking the example that the material of the core 1021 includes siloxane, the material of the shell 1022 may include one or more of alumina, polysiloxane, and titania. For example, the material of the core 1021 is alumina, and the material of the shell 1022 is polysiloxane. In the preparation process of the core-shell structure, firstly, a solution containing alumina nano ions is formed, then a siloxane monomer is added into the solution containing the alumina nano particles 102, so that the siloxane monomer is subjected to polymerization reaction on the surfaces of the alumina nano particles 102 to generate polysiloxane, and the core-shell structure is formed.
The optical adhesive of the embodiments of the present disclosure may further include a first release film 2 and a second release film 3. The colloid layer 1 is arranged between the first release film 2 and the second release film 3. The first release film 2 may be a light release film, and the second release film 3 may be a heavy release film, but the embodiment of the present disclosure is not limited thereto. When the colloid layer 1 disclosed by the invention is adhered to a colorless polyimide film layer, the stripping adhesive force (180 DEG peeling adhesive) is greater than 1800gf/25mm, the storage modulus is less than 200 kpa@20 ℃, 40 kpa-80 kpa@25 ℃ and 30 kpa-60 kpa@80 ℃, and the recovery can reach 92%. The method for testing the resilience can be as follows: repeatedly stretching by using a stretcher at a stretching rate of 300mm/min, recovering after unloading the force after stretching to 100% strain, and repeating for 2000 times. The result of this reversion test is shown in FIG. 3, line L 1 For stretching curve, line L 2 Is a recovery curve.
The embodiment of the disclosure also provides a cover plate. As shown in fig. 4, the cover plate may be used for a display device. The cover sheet may comprise a transparent flexible layer 4 and an optical adhesive according to any of the embodiments above, wherein:
the transparent flexible layer 4 is provided in a plurality of layers. The colloidal layer 1 may include a matrix 101 and nanoparticles 102 doped in the matrix 101. The nanoparticle 102 may include a core 1021 and a shell 1022. The shell 1022 encloses the core 1021 to form a core-shell structure. Wherein the refractive index of the matrix 101 is smaller than the refractive index of the shell 1022 or core 1021. Two adjacent transparent flexible layers 4 are bonded by the colloid layer 1 among the plurality of transparent flexible layers 4.
The glue layer 1 in the cover plate of the embodiment of the present disclosure is the same as the glue layer 1 in the embodiment of the optical cement described above, and therefore, has the same beneficial effects, and the disclosure is not repeated here.
The following describes in detail the respective portions of the cover plate of the embodiment of the present disclosure:
the cover plate is used for a flexible display device. The cover plate may include a transparent flexible layer 4 to enhance the flexibility of the cover plate. Wherein the number of the transparent flexible layers 4 may be two, three, four or more to improve the impact resistance of the cover plate. For example, the transparent flexible layer 4 may be two in number and disposed opposite to each other. The materials of the plurality of transparent flexible layers 4 may be the same, or may be different. Taking the same material as the plurality of transparent flexible layers 4 as an example, the material of the transparent flexible layers 4 may be Colorless Polyimide (CPI), but the embodiment of the present disclosure is not particularly limited thereto.
The colloidal layer 1 may comprise a matrix 101 and nanoparticles 102, wherein:
the matrix 101 is the main component of the gel layer 1. The material of the substrate 101 may include an acrylic polymer to provide the substrate 101 with adhesion. The acrylic polymer may be a hydroxyl group-containing acrylic polymer. The hydroxyl group-containing acrylic polymer may include a hydroxyl group-containing acrylate. The refractive index of the matrix 101 may be 1.62, but the embodiment of the present disclosure is not particularly limited thereto.
The nanoparticles 102 are doped into the matrix 101 for modifying the matrix 101. The nanoparticle 102 may be a core-shell structure that includes a core 1021 and a shell 1022 that encapsulates the core 1021. The mass fraction of the nanoparticles 102 in the colloidal layer 1 may be 1.8% to 2.5%, for example 2%, but the disclosure is not limited thereto. In an embodiment of the present disclosure, the refractive index of the matrix 101 is smaller than the refractive index of the housing 1022, such that the refractive index of the matrix 101 doped with the nanoparticles 102 is greater than the refractive index of the matrix 101 not doped with the nanoparticles 102. Taking the substrate 101 as an example with a refractive index of 1.48, the refractive index of the shell 1022 may be 1.63-1.65, and the refractive index of the core 1021 may be 1.41-1.5. Taking the example that the material of the base 101 includes an acrylic polymer, the material of the housing 1022 may include silicone, but the embodiment of the present disclosure is not particularly limited thereto. Further, taking the case 1022 as an example where the material of the shell includes siloxane, the material of the core 1021 may include one or more of alumina, polysiloxane, and titania. For example, the shell 1022 may be a silicone and the core 1021 may be a silicone.
In another embodiment of the present disclosure, the refractive index of the matrix 101 is less than the refractive index of the core 1021, such that the refractive index of the matrix 101 doped with nanoparticles 102 is greater than the refractive index of the matrix 101 not doped with nanoparticles 102. Taking the substrate 101 as an example with a refractive index of 1.48, the refractive index of the core 1021 may be 1.63-1.65, and the refractive index of the shell 1022 may be 1.41-1.5. Taking the example that the material of the base 101 includes an acrylic polymer, the material of the core 1021 may include a siloxane, but the embodiment of the present disclosure is not particularly limited thereto. Further, as an example in which the material of the core 1021 includes siloxane, the material of the housing 1022 may include one or more of alumina, polysiloxane, and titania, but the embodiment of the present disclosure is not limited thereto. For example, the material of the core 1021 is silicone and the material of the shell 1022 is polysiloxane.
The gel layer 1 serves for the adhesive function. Two adjacent transparent flexible layers 4 are bonded through the colloid layer 1 among the plurality of transparent flexible layers 4. Further, any adjacent two transparent flexible layers 4 are bonded by the glue layer 1. Taking the case where the refractive index of the base 101 is smaller than that of the case 1022 as an example, the refractive index of the two transparent flexible layers 4 bonded by the gel layer 1 is smaller than that of the case 1022 and is larger than that of the base 101. Taking the case where the refractive index of the case 1022 is 1.63 to 1.65 and the refractive index of the base 101 is 1.48 as an example, the refractive index of the two transparent flexible layers 4 may be 1.62, but the embodiment of the present disclosure is not particularly limited thereto. Taking the example that the refractive index of the matrix 101 is smaller than that of the core 1021, the refractive index of the two transparent flexible layers 4 bonded by the colloid layer 1 is smaller than that of the core 1021 and is larger than that of the matrix 101. Taking the example that the refractive index of the core 1021 is 1.63 to 1.65 and the refractive index of the matrix 101 is 1.48, the refractive index of the two transparent flexible layers 4 may be 1.62, but the embodiment of the present disclosure is not particularly limited thereto. The light path diagram of the case where the cover plate of the present disclosure is used in a display device is shown in fig. 5.
The embodiment of the disclosure also provides a display device. As shown in fig. 6, the display device may include the cover plate 11 of any of the above embodiments. Of course, the display device may further include a display panel 5, a first adhesive layer 6, a touch substrate 7, a second adhesive layer 8, a polarizer 9, and a third adhesive layer 10. The touch substrate 7 is adhered to the display panel 5 through the first adhesive layer 6. The polarizer 9 is bonded to the side of the touch substrate 7 remote from the display panel 5 through a second adhesive layer 8. The cover plate 11 is adhered to the polarizer 9 at a side far from the touch substrate 7 through a third adhesive layer 10. The display device may be a mobile phone, a computer, a television, a camera, a wearable display, a navigator, a vehicle-mounted display, etc., but the embodiment of the present disclosure is not particularly limited thereto.
Since the cover plate in the display device of the embodiment of the present disclosure is the same as the cover plate in the embodiment of the cover plate, it has the same beneficial effects and is not described herein.
The foregoing disclosure is not intended to be limited to the preferred embodiments of the present disclosure, but rather is to be construed as limited to the embodiments disclosed, and modifications and equivalent arrangements may be made in accordance with the principles of the present disclosure without departing from the scope of the disclosure.
Claims (9)
1. A cover sheet, comprising:
a plurality of transparent flexible layers stacked;
an optical adhesive, the optical adhesive comprising:
the colloid layer comprises a matrix and nano particles doped in the matrix, wherein the nano particles comprise a core body and a shell body for coating the core body, and the refractive index of the matrix is smaller than that of the shell body or the core body; the refractive index of the matrix is smaller than that of the shell, the material of the matrix comprises acrylic polymer, and the material of the shell comprises siloxane;
two adjacent transparent flexible layers are bonded through the colloid layers of the optical adhesive, and the refractive indexes of the two transparent flexible layers bonded through the colloid layers are smaller than that of the shell and larger than that of the matrix.
2. The cover plate according to claim 1, wherein the mass fraction of the nanoparticles in the colloidal layer is 1.8-2.5%.
3. A cover sheet, comprising:
a plurality of transparent flexible layers stacked;
an optical adhesive, the optical adhesive comprising:
the colloid layer comprises a matrix and nano particles doped in the matrix, wherein the nano particles comprise a core body and a shell body for coating the core body, and the refractive index of the matrix is smaller than that of the shell body or the core body; the refractive index of the matrix is smaller than that of the shell, and the glass transition temperature of the core body is smaller than or equal to-40 ℃;
two adjacent transparent flexible layers are bonded through the colloid layers of the optical adhesive, and the refractive indexes of the two transparent flexible layers bonded through the colloid layers are smaller than that of the shell and larger than that of the matrix.
4. A cover plate according to claim 3, wherein the mass fraction of the nanoparticles in the colloidal layer is 1.8-2.5%.
5. A cover sheet, comprising:
a plurality of transparent flexible layers stacked;
an optical adhesive, the optical adhesive comprising:
the colloid layer comprises a matrix and nano particles doped in the matrix, wherein the nano particles comprise a core body and a shell body for coating the core body, and the refractive index of the matrix is smaller than that of the shell body or the core body; the refractive index of the matrix is less than the refractive index of the core, the material of the matrix comprises an acrylic polymer, and the material of the core comprises silicone;
two adjacent transparent flexible layers are bonded through the colloid layers of the optical adhesive, and the refractive indexes of the two transparent flexible layers bonded through the colloid layers are smaller than that of the core body and larger than that of the matrix.
6. The cover sheet of claim 5, wherein the mass fraction of the nanoparticles in the colloidal layer is 1.8% -2.5%.
7. A cover sheet, comprising:
a plurality of transparent flexible layers stacked;
an optical adhesive, the optical adhesive comprising:
the colloid layer comprises a matrix and nano particles doped in the matrix, wherein the nano particles comprise a core body and a shell body for coating the core body, and the refractive index of the matrix is smaller than that of the shell body or the core body; the refractive index of the matrix is smaller than that of the nucleus, and the glass transition temperature of the shell is smaller than or equal to-40 ℃;
two adjacent transparent flexible layers are bonded through the colloid layers of the optical adhesive, and the refractive indexes of the two transparent flexible layers bonded through the colloid layers are smaller than that of the shell and larger than that of the matrix.
8. The cover sheet of claim 7, wherein the mass fraction of the nanoparticles in the colloidal layer is 1.8% -2.5%.
9. A display device comprising a cover plate according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011010008.8A CN112162653B (en) | 2020-09-23 | 2020-09-23 | Display device, cover plate and optical adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011010008.8A CN112162653B (en) | 2020-09-23 | 2020-09-23 | Display device, cover plate and optical adhesive |
Publications (2)
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| CN105713537A (en) * | 2014-12-23 | 2016-06-29 | 三星Sdi株式会社 | Adhesive film and display member including the same |
| CN106349961A (en) * | 2015-07-16 | 2017-01-25 | 三星Sdi株式会社 | Adhesive film, optical member including the same, and optical display including the same |
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| CN111599268A (en) * | 2019-02-20 | 2020-08-28 | 华为技术有限公司 | Flexible display cover plate, display panel and display device |
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| KR20180046424A (en) * | 2016-10-27 | 2018-05-09 | 삼성디스플레이 주식회사 | Flexible window and flexible display device comprising the same |
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| CN112162653A (en) | 2021-01-01 |
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