CN114393902A - Composite board and preparation method thereof, display backboard and preparation method thereof, and display device - Google Patents

Composite board and preparation method thereof, display backboard and preparation method thereof, and display device Download PDF

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Publication number
CN114393902A
CN114393902A CN202210012499.2A CN202210012499A CN114393902A CN 114393902 A CN114393902 A CN 114393902A CN 202210012499 A CN202210012499 A CN 202210012499A CN 114393902 A CN114393902 A CN 114393902A
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China
Prior art keywords
display
composite board
reinforcing rib
plate
layer plate
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CN202210012499.2A
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Chinese (zh)
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CN114393902B (en
Inventor
张丽
金文学
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Huizhou Shiwei New Technology Co Ltd
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Huizhou Shiwei New Technology Co Ltd
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Priority to CN202210012499.2A priority Critical patent/CN114393902B/en
Publication of CN114393902A publication Critical patent/CN114393902A/en
Priority to PCT/CN2022/125608 priority patent/WO2023130795A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The embodiment of the application provides a composite board and a preparation method thereof, a display back plate and a preparation method thereof, and a display device. The embodiment of the application provides a preparation method of a composite board, which comprises the following steps: providing an inner laminate and an outer laminate, the material of the inner laminate comprising a first polymeric material and the material of the outer laminate comprising a second polymeric material; providing a plurality of CFRT (carbon fiber reinforced polymer) unidirectional tapes, and combining the CFRT unidirectional tapes together by adopting a co-extrusion molding process to obtain a middle layer plate; the middle layer plate is arranged between the inner layer plate and the outer layer plate, the inner layer plate, the middle layer plate and the outer layer plate are combined together by adopting a co-extrusion forming process to obtain the composite plate, the prepared composite plate has higher specific strength and specific rigidity and lower density, the composite plate can be used for processing and preparing the display backboard, and when the display backboard is applied to a display device, the weight of the whole display device can be obviously reduced, so that the display device is lighter and thinner.

Description

Composite board and preparation method thereof, display backboard and preparation method thereof, and display device
Technical Field
The application relates to the technical field of plates, in particular to a composite plate and a preparation method thereof, a display back plate and a preparation method thereof, and a display device.
Background
Display devices, such as televisions, are widely available in life as a common electrical appliance that enriches people's lives. With the continuous development of television technology, various super-large screens and ultra-thin televisions come out in succession and are more and more popular with consumers.
At present, the television back plates on the market usually adopt an aluminum-plastic composite plate and a steel-plastic composite plate, but the aluminum-plastic composite plate and the steel-plastic composite plate have the defects of high density, limited specific strength and specific rigidity and the like, so that a thicker back plate is required to be used on a large-size television, the weight of the whole television is greatly improved, and the television is heavy and has limited strength.
Disclosure of Invention
The embodiment of the application provides a composite board and a preparation method thereof, a display back plate and a preparation method thereof, and a display device.
In a first aspect, an embodiment of the present application provides a method for preparing a composite board, including:
providing an inner laminate and an outer laminate, the material of the inner laminate comprising a first polymeric material and the material of the outer laminate comprising a second polymeric material;
providing a plurality of CFRT (carbon fiber reinforced polymer) unidirectional tapes, and combining the CFRT unidirectional tapes together by adopting a co-extrusion molding process to obtain a middle layer plate;
and arranging the middle layer plate between the inner layer plate and the outer layer plate, and combining the inner layer plate, the middle layer plate and the outer layer plate together by adopting a co-extrusion molding process to obtain the composite plate.
In some embodiments, the plurality of CFRT unidirectional tapes is 4 to 6 CFRT unidirectional tapes, and the thickness of a single CFRT unidirectional tape is 0.3mm to 0.5 mm.
In some embodiments, the material of the CFRT unidirectional tape comprises glass fibers and PC resin, wherein the content of the glass fibers is 60 wt% to 70 wt%, and the content of the PC resin is 30 wt% to 40 wt%.
In some embodiments, the first polymeric material and the first polymeric material are both PC resins.
In some embodiments, the inner laminate is a fire resistant PC sheet and the outer laminate further comprises a pigment.
In some embodiments, the inner layer has a thickness of 0.5mm to 0.8mm and the outer layer has a thickness of 0.3mm to 0.7 mm.
In a second aspect, embodiments of the present application provide a composite board, which is manufactured by the above-described method for manufacturing a composite board.
In a third aspect, an embodiment of the present application provides a method for manufacturing a display backplane, including:
providing a composite board, wherein the composite board is the composite board;
and processing the composite board into a preset shape by adopting a hot press molding process to obtain the display backboard.
In a fourth aspect, embodiments of the present application provide a display backplane, which is manufactured by using the above method for manufacturing a display backplane.
In some embodiments, the display backplane comprises a backplane body, the backplane body has a first surface and a second surface which are oppositely arranged, the first surface is used for being arranged towards the light emergent side of the display, and the second surface is provided with a first reinforcing rib to improve the strength of the backplane body;
the area of the second surface, which is positioned on one side of the first reinforcing rib, is defined as an appearance area;
the area of the second surface on the other side of the first reinforcing rib and the area where the first reinforcing rib is located are defined as mounting areas, and the mounting areas are used for accommodating and mounting parts.
In some embodiments, a second reinforcing rib is disposed in the appearance region, a third reinforcing rib is disposed in the installation region, and both the second reinforcing rib and the third reinforcing rib are used for improving the strength of the back plate body.
In some embodiments, a mounting convex hull is arranged in the mounting area, a first mounting hole is formed in the mounting convex hull, a second mounting hole is formed in the third reinforcing rib, and the first mounting hole and the second mounting hole are used for mounting parts.
In some embodiments, the display backplane further includes a bending edge connected to the backplane body, and the bending edge is disposed on a side of the backplane body where the first surface is located.
In a fifth aspect, an embodiment of the present application provides a display device, including the display backplane as described above.
The preparation method of composite board that this application embodiment provided, through with inner plating, intermediate lamella and outer plywood coextrusion molding make composite board, wherein, intermediate lamella is made by the coextrusion molding of the unidirectional tape of multi-disc CFRT, inner plating and outer plywood all include polymer material, the composite board who makes has higher specific strength and specific rigidity, and density is lower, this composite board can be used for processing preparation display backplate, the display backplate that makes can keep better intensity and rigidity under thinner thickness, when this display backplate is applied to display device, can show the weight that reduces display device complete machine, make display device more frivolous, and reduce display device's manufacturing cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a flowchart of a method for manufacturing a composite board according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a composite board provided in an embodiment of the present application.
Fig. 3 is a flowchart of a method for manufacturing a display backplane according to an embodiment of the present disclosure.
Fig. 4 is a schematic top view of a display backplane according to an embodiment of the present disclosure.
Fig. 5 is a schematic cross-sectional view of a partial structure of a display backplane according to an embodiment of the present disclosure.
Fig. 6 is an enlarged schematic view of the region a in fig. 5.
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. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for manufacturing a composite board according to an embodiment of the present disclosure. The embodiment of the application provides a preparation method of a composite board, which comprises the following steps:
110, providing an inner laminate and an outer laminate, the material of the inner laminate comprising a first polymer material and the material of the outer laminate comprising a second polymer material.
For example, the first polymer material and the second polymer material may be the same polymer material or different polymer materials, and in some embodiments, the first polymer material and the second polymer material may both be PC (Polycarbonate) resin.
Illustratively, the inner layer has a thickness of 0.5mm to 0.8mm (e.g., 0.5mm, 0.6mm, 0.7mm, 0.8mm, etc.), and the outer layer has a thickness of 0.3mm to 0.7mm (e.g., 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, etc.).
In some embodiments, the inner layer sheet may be a fire resistant PC sheet to enhance the fire resistant properties of the resulting composite panel.
In some embodiments, the outer plate can be a PC decorative sheet with various colors, the PC decorative sheet can be a PC material with metal texture and free from spraying, or a PC material with common color master matching (i.e., the outer plate contains pigment), the colors are various, and the PC decorative sheet can be selected according to the appearance of the product to play a role in beauty decoration, so that the outer surface of the prepared composite plate can realize better beauty without a spraying process.
And 120, providing a plurality of CFRT (carbon fiber reinforced polymer) unidirectional tapes, and combining the plurality of CFRT unidirectional tapes together by adopting a co-extrusion molding process to obtain the middle-layer plate.
Illustratively, the multi-piece CFRT unidirectional tape may be 4-6 (e.g., 4, 5, 6) CFRT unidirectional tapes, and the single-layer CFRT unidirectional tape may have a thickness of 0.3 mm-0.5 mm (e.g., 0.3mm, 0.4mm, 0.5mm, etc.).
It is understood that CFRT (continuous fiber reinforced thermoplastic composite) is a thermoplastic composite made by using a thermoplastic resin as a matrix and continuous fibers as a reinforcement through a resin melt impregnation process, an extrusion process, or the like.
A CFRT unidirectional tape is a single layer, fiber reinforced thermoplastic composite sheet in which continuous fibers are spread, laid and impregnated with a thermoplastic resin, and is characterized by the parallel arrangement of the fibers without interweaving.
In other embodiments, the number of CFRT unidirectional tapes may be 4 or less, such as 2 or 3, or 6 or more, such as 7, 8, 9, 10, etc.
Illustratively, the material of the CFRT unidirectional tape may include glass fibers and PC resin, wherein the content of the glass fibers may be 60 wt% to 70 wt% (e.g., 60 wt%, 62 wt%, 64 wt%, 66 wt%, 68 wt%, 70 wt%, etc.), and the content of the PC resin may be 30 wt% to 40 wt% (e.g., 30 wt%, 32 wt%, 34 wt%, 36 wt%, 38 wt%, 40 wt%, etc.).
And 130, arranging the middle layer plate between the inner layer plate and the outer layer plate, and combining the inner layer plate, the middle layer plate and the outer layer plate together by adopting a co-extrusion forming process to obtain the composite plate.
Illustratively, "bonding the inner, middle and outer plies together using a co-extrusion process" may specifically include: and heating the inner layer plate, the middle layer plate and the outer layer plate to soften the inner layer plate, the middle layer plate and the outer layer plate, and extruding the inner layer plate, the middle layer plate and the outer layer plate.
It is to be understood that the order of execution of "providing the inner and outer laminates" and "preparing the middle laminate" is not limited and both may be performed simultaneously, or "providing the inner and outer laminates" first "preparing the middle laminate" later, or "providing the inner and outer laminates" later "preparing the middle laminate" earlier.
The preparation method of composite board that this application embodiment provided, through with inner plating, intermediate lamella and outer plywood coextrusion molding make composite board, wherein, intermediate lamella is made by the coextrusion molding of the unidirectional tape of multi-disc CFRT, inner plating and outer plywood all include polymer material, the composite board who makes has higher specific strength and specific rigidity, and density is lower, this composite board can be used for processing preparation display backplate, the display backplate that makes can keep better intensity and rigidity under thinner thickness, when this display backplate is applied to display device, can show the weight that reduces display device complete machine, make display device more frivolous, and reduce display device's manufacturing cost. In addition, the preparation method of the composite board in the embodiment of the application basically does not generate pollutants in the production process, and has better environmental protection performance.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a composite board provided in an embodiment of the present application. The embodiment of the application also provides a composite board 100, which is prepared by adopting the preparation method of the composite board in any embodiment.
Referring to fig. 2, the composite panel 100 may include an inner layer panel 10, a middle layer panel 20, and an outer layer panel 30 that are sequentially stacked, and the inner layer panel 10, the middle layer panel 20, and the outer layer panel 30 are bonded together through a co-extrusion process.
The performance of the composite board 100 provided in the embodiment of the present application and the performance of the conventional aluminum-plastic composite board are tested, and the test results are shown in table 1:
TABLE 1
Figure BDA0003458191350000051
As can be seen from table 1, compared with the conventional aluminum-plastic composite board, the composite board 100 provided in the embodiment of the present application has better mechanical strength index, smaller areal density and weight reduction of about 22.36% under the condition that the thickness is reduced by 9.5%. Therefore, when the composite board 100 is used to process and manufacture a display back plate, the manufactured display back plate can maintain good strength and rigidity at a thinner thickness, and when the display back plate is applied to a display device, the weight of the whole display device can be significantly reduced, so that the display device is thinner and lighter.
Referring to fig. 3, fig. 3 is a flowchart of a method for manufacturing a display backplane according to an embodiment of the present disclosure. The embodiment of the application further provides a preparation method of the display back plate, which comprises the following steps:
a composite board is provided 210, and the composite board may be the composite board in any of the above embodiments.
And 220, processing the composite board into a preset shape by adopting a hot press molding process to obtain the display backboard.
Referring to fig. 4 to 6, fig. 4 is a schematic top view of a display back plate according to an embodiment of the present disclosure, fig. 5 is a schematic cross-sectional view of a portion of a structure of the display back plate according to the embodiment of the present disclosure, and fig. 6 is an enlarged schematic view of a region a in fig. 5. The embodiment of the present application further provides a display backplane 200, which is manufactured by using the method for manufacturing a display backplane in any one of the embodiments.
Referring to fig. 4 to 6, the display backplate 200 includes a backplate body 230, the backplate body 230 has a first surface 31 and a second surface 32 disposed oppositely, the first surface 31 is disposed toward the light exit side of the display, and the second surface 32 is provided with a first reinforcing rib 41 to enhance the strength of the backplate body 230.
The area of the second surface 32 on the side of the first reinforcing rib 41 is defined as an appearance area 51, and it is understood that the appearance area 51 is directly disposed toward the external environment, and when the display back panel 200 is applied to a display device, a user can directly observe the appearance area 51.
The area of the second surface 32 on the other side of the first reinforcing rib 41 and the area of the first reinforcing rib 41 are defined as a mounting area 52, and the mounting area 52 is used for accommodating and mounting components (such as a movement, a power supply, a sound box, and the like).
Referring to FIG. 6, it will be understood that the second surface 32 is the surface of the outer laminate 30 on the side away from the center laminate 20.
Referring to fig. 4 and 5, the second reinforcing rib 42 is disposed in the appearance area 51, the third reinforcing rib 43 is disposed in the installation area 52, and both the second reinforcing rib 42 and the third reinforcing rib 43 are used for improving the strength of the back plate body 230.
Referring to fig. 4 and 5, an installation convex hull 60 is arranged in the installation area 52, a first installation hole 61 is arranged on the installation convex hull 60, a second installation hole 431 is arranged on the third reinforcing rib 43, and both the first installation hole 61 and the second installation hole 431 are used for installing parts.
Referring to fig. 4 to fig. 6, the display backplate 200 further includes a bending edge 40 connected to the backplate body 230, the bending edge 40 is disposed on a side of the backplate body 230 where the first surface 31 is located, and the bending edge 40 can be used to connect components such as a middle frame and a suspension loop.
It can be understood that the display backplate 200 of the embodiment of the present application is through setting up the installation convex closure 60, the third strengthening rib 43, bend limit 40 isotructure to install spare part, thereby need not middle adaptor can realize the installation of spare parts such as center, core, power, backshell, and the connected mode can include buckle connection, viscose connection, screw connection etc..
In addition, the display back panel 200 of the embodiment of the application can significantly improve the strength and rigidity of the display back panel 200 by providing the first reinforcing rib 41, the second reinforcing rib 42, and the third reinforcing rib 43.
The embodiment of the present application further provides a display device, which may include the display backplane 200 in any of the embodiments described above.
Illustratively, the display device may further include a display panel, a middle frame, and the like, and it is understood that the display panel and the middle frame are both disposed on the first surface 31 side of the back plate body 230, i.e., on the side where the bending edge 40 is located.
Illustratively, the display device may further include a rear case for covering the mounting area 52 of the display backplate 200.
The composite board and the preparation method thereof, the display back plate and the preparation method thereof, and the display device provided by the embodiment of the application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding 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 (14)

1. A preparation method of a composite board is characterized by comprising the following steps:
providing an inner laminate and an outer laminate, the material of the inner laminate comprising a first polymeric material and the material of the outer laminate comprising a second polymeric material;
providing a plurality of CFRT (carbon fiber reinforced polymer) unidirectional tapes, and combining the CFRT unidirectional tapes together by adopting a co-extrusion molding process to obtain a middle layer plate;
and arranging the middle layer plate between the inner layer plate and the outer layer plate, and combining the inner layer plate, the middle layer plate and the outer layer plate together by adopting a co-extrusion molding process to obtain the composite plate.
2. The method for preparing the composite board according to claim 1, wherein the plurality of CFRT unidirectional tapes are 4-6 CFRT unidirectional tapes, and the thickness of a single-layer CFRT unidirectional tape is 0.3-0.5 mm.
3. The method for preparing a composite board according to claim 1, wherein the material of the CFRT unidirectional tape comprises glass fiber and PC resin, wherein the content of the glass fiber is 60-70 wt%, and the content of the PC resin is 30-40 wt%.
4. The method of manufacturing a composite board according to claim 1, wherein the first polymer material and the second polymer material are both PC resins.
5. The method of making a composite board according to claim 4, wherein the inner layer board is a fire resistant PC sheet and the outer layer board further comprises a pigment.
6. The method of manufacturing a composite board according to any one of claims 1 to 4, wherein the thickness of the inner layer is 0.5mm to 0.8mm, and the thickness of the outer layer is 0.3mm to 0.7 mm.
7. A composite board, characterized in that it is produced by the method for producing a composite board according to any one of claims 1 to 6.
8. A preparation method of a display backboard is characterized by comprising the following steps:
providing a composite board, wherein the composite board is the composite board as claimed in claim 7;
and processing the composite board into a preset shape by adopting a hot press molding process to obtain the display backboard.
9. A display backplane characterized by being produced by the method of claim 8.
10. The display backplane of claim 9, wherein the display backplane comprises a backplane body having a first surface and a second surface opposite to each other, the first surface being configured to face a light exit side of the display, the second surface being provided with a first reinforcing rib to improve strength of the backplane body;
the area of the second surface, which is positioned on one side of the first reinforcing rib, is defined as an appearance area; the area of the second surface on the other side of the first reinforcing rib and the area where the first reinforcing rib is located are defined as mounting areas, and the mounting areas are used for accommodating and mounting parts.
11. The display back plate of claim 10, wherein a second reinforcing rib is disposed in the appearance region, a third reinforcing rib is disposed in the mounting region, and both the second reinforcing rib and the third reinforcing rib are used for improving the strength of the back plate body.
12. The display back plate of claim 11, wherein a mounting convex hull is arranged in the mounting area, a first mounting hole is arranged on the mounting convex hull, a second mounting hole is arranged on the third reinforcing rib, and the first mounting hole and the second mounting hole are used for mounting parts.
13. The display back plate of claim 10, further comprising a bending edge connected to the back plate body, wherein the bending edge is disposed on a side of the back plate body where the first surface is located.
14. A display device comprising the display backplane of any of claims 9-13.
CN202210012499.2A 2022-01-06 2022-01-06 Composite board and preparation method thereof, display backboard and preparation method thereof, and display device Active CN114393902B (en)

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PCT/CN2022/125608 WO2023130795A1 (en) 2022-01-06 2022-10-17 Composite board and preparation method therefor, display back plate and preparation therefor, and display apparatus

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