CN114393902B - 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
CN114393902B
CN114393902B CN202210012499.2A CN202210012499A CN114393902B CN 114393902 B CN114393902 B CN 114393902B CN 202210012499 A CN202210012499 A CN 202210012499A CN 114393902 B CN114393902 B CN 114393902B
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China
Prior art keywords
display
composite board
board
plate
composite
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CN202210012499.2A
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Chinese (zh)
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CN114393902A (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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Classifications

    • 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 backboard 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 layer board and an outer layer board, wherein the material of the inner layer board comprises a first polymer material and the material of the outer layer board comprises a second polymer material; providing a plurality of CFRT unidirectional tapes, and combining the CFRT unidirectional tapes together by adopting a coextrusion 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 coextrusion molding process, so that a composite plate is obtained, the prepared composite plate has higher specific strength and specific rigidity and lower density, the composite plate can be used for processing and preparing a display backboard, and when the display backboard is applied to a display device, the weight of the whole machine of the display device can be obviously reduced, and 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 backboard and a preparation method thereof, and a display device.
Background
Display devices, such as televisions, are a common electrical appliance enriching the lives of people and are seen everywhere in life. With the continuous development of television technology, various ultra-large screen and ultra-thin televisions are coming out successively, and are becoming more and more popular with consumers.
At present, the television backboard on the market usually adopts an aluminum-plastic composite board and a steel-plastic composite board, however, the aluminum-plastic composite board and the steel-plastic composite board have the defects of high density, limited specific strength and specific rigidity and the like, so that a thicker backboard is needed on a large-size television, the weight of the whole television is greatly improved, and the machine is heavy and has limited strength.
Disclosure of Invention
The embodiment of the application provides a composite board, a preparation method thereof, a display backboard, a preparation method thereof and a display device, wherein the prepared composite board has higher specific strength and specific rigidity and lower density, and when the display backboard processed and prepared by adopting the composite board is applied to the display device, the weight of the whole display device can be obviously reduced, so that the display device is lighter and thinner.
In a first aspect, an embodiment of the present application provides a method for preparing a composite board, including:
providing an inner layer panel comprising a first polymeric material and an outer layer panel comprising a second polymeric material;
providing a plurality of CFRT unidirectional tapes, and combining the CFRT unidirectional tapes together by adopting a coextrusion 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 coextrusion molding process to obtain the composite plate.
In some embodiments, the plurality of CFRT unidirectional tapes is 4-6 and the single layer CFRT unidirectional tape has a thickness of 0.3mm to 0.5mm.
In some embodiments, the material of the CFRT unidirectional tape comprises glass fibers in an amount of 60wt% to 70wt% and PC resin in an amount of 30wt% to 40wt%.
In some embodiments, the first polymeric material and the first polymeric material are both PC resins.
In some embodiments, the inner layer panel is a fire resistant PC sheet and the outer layer panel 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 0.7mm.
In a second aspect, embodiments of the present application provide a composite board made by the method of making a composite board as described above.
In a third aspect, an embodiment of the present application provides a method for manufacturing a display back plate, 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 back plate, which is manufactured by using the method for manufacturing a display back plate as described above.
In some embodiments, the display backboard comprises a backboard body, wherein the backboard body is provided with a first surface and a second surface which are oppositely arranged, the first surface is used for being arranged towards the light emitting side of the display, and the second surface is provided with first reinforcing ribs so as to improve the strength of the backboard body;
the area of the second surface on one side of the first reinforcing rib is defined as an appearance area;
the area on the second surface, which is located at the other side of the first reinforcing rib, and the area where the first reinforcing rib is located are defined as installation areas, and the installation areas are used for accommodating and installing parts.
In some embodiments, the second reinforcing rib is disposed in the appearance area, the third reinforcing rib is disposed in the installation area, and the second reinforcing rib and the third reinforcing rib are both used for improving the strength of the backboard body.
In some embodiments, an installation convex hull is arranged in the installation area, a first installation hole is formed in the installation convex hull, a second installation hole is formed in the third reinforcing rib, and the first installation hole and the second installation hole are both used for installing parts.
In some embodiments, the display back panel further includes a bending edge connected to the back panel body, where the bending edge is disposed on a side of the back panel body where the first surface is located.
In a fifth aspect, embodiments of the present application provide a display device including a display back plate as described above.
According to the preparation method of the composite board, the composite board is prepared through co-extrusion molding of the inner layer board, the middle layer board and the outer layer board, wherein the middle layer board is prepared through co-extrusion molding of a plurality of CFRT unidirectional tapes, the inner layer board and the outer layer board both comprise polymer materials, the prepared composite board has higher specific strength and specific rigidity and lower density, the composite board can be used for processing and preparing the display backboard, the prepared display backboard can keep better strength and rigidity under the thinner thickness, and when the display backboard is applied to a display device, the weight of the whole display device can be obviously reduced, the display device is lighter and thinner, and the production cost of the display device is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for preparing a composite board according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a composite board according to an embodiment of the present application.
Fig. 3 is a flowchart of a method for manufacturing a display back plate according to an embodiment of the present application.
Fig. 4 is a schematic top view of a display back plate according to an embodiment of the present application.
Fig. 5 is a schematic cross-sectional view of a portion of a structure of a display back plate according to an embodiment of the present application.
Fig. 6 is an enlarged schematic view of the area 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 will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Referring to fig. 1, fig. 1 is a flowchart of a method for preparing a composite board according to an embodiment of the present application. The embodiment of the application provides a preparation method of a composite board, which comprises the following steps:
110 providing an inner layer plate comprising a first polymeric material and an outer layer plate comprising a second polymeric material.
The first and second polymeric materials may be the same polymeric material or may be different polymeric materials, and in some embodiments, the first and second polymeric materials may each be a PC (Polycarbonate) resin.
Illustratively, the inner laminate has a thickness of 0.5mm to 0.8mm (e.g., 0.5mm, 0.6mm, 0.7mm, 0.8mm, etc.), and the outer laminate 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 panel may be a fire resistant PC sheet to improve the fire resistance of the resulting composite panel.
In some embodiments, the outer layer board can be a PC decorative sheet with various colors, the PC decorative sheet can be made of a PC material with metal texture and free of spraying, or a PC material with common color matching (namely, the outer layer board contains pigment), the colors are various, the outer layer board can be selected according to the appearance of the product, the attractive decorative effect is achieved, and the outer surface of the manufactured composite board can achieve good attractive degree without a spraying process.
120, providing a plurality of CFRT unidirectional tapes, and combining the CFRT unidirectional tapes together by adopting a coextrusion molding process to obtain the middle layer plate.
Illustratively, the plurality of CFRT unidirectional tapes may be 4-6 (e.g., 4, 5, 6) CFRT unidirectional tapes, with a single layer of CFRT unidirectional tapes having a thickness of 0.3mm to 0.5mm (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 a process such as a resin melt impregnation method, extrusion, etc., using a thermoplastic resin as a matrix and continuous fibers as a reinforcing material.
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, characterized by fibers arranged parallel to each other without interlacing.
In other embodiments, the number of pieces of CFRT unidirectional tape may also be less than 4, such as 2, 3, or more than 6, such as 7, 8, 9, 10, etc.
Illustratively, the material of the CFRT unidirectional tape may include glass fibers in an amount of 60wt% to 70wt% (e.g., 60wt%, 62wt%, 64wt%, 66wt%, 68wt%, 70wt%, etc.), and PC resin in an amount of 30wt% to 40wt% (e.g., 30wt%, 32wt%, 34wt%, 36wt%, 38wt%, 40wt%, etc.).
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 molding process to obtain the composite plate.
By way of example, "joining together the inner, middle and outer plies 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 then extruding the inner layer plate, the middle layer plate and the outer layer plate.
It will be appreciated that the order of execution of the "providing inner and outer plies" and "preparing middle plies" is not limited, and both may be performed simultaneously, or the "providing inner and outer plies" prior "preparing middle plies" may follow, or the "providing inner and outer plies" following "preparing middle plies" may follow.
According to the preparation method of the composite board, the composite board is prepared through co-extrusion molding of the inner layer board, the middle layer board and the outer layer board, wherein the middle layer board is prepared through co-extrusion molding of a plurality of CFRT unidirectional tapes, the inner layer board and the outer layer board both comprise polymer materials, the prepared composite board has higher specific strength and specific rigidity and lower density, the composite board can be used for processing and preparing the display backboard, the prepared display backboard can keep better strength and rigidity under the thinner thickness, and when the display backboard is applied to a display device, the weight of the whole display device can be obviously reduced, the display device is lighter and thinner, and the production cost of the display device is reduced. In addition, the preparation method of the composite board 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 according to an embodiment of the present application. The embodiment of the application also provides a composite board 100, which is manufactured by adopting the manufacturing method of the composite board in any embodiment.
Referring to fig. 2, the composite panel 100 may include an inner panel 10, a middle panel 20, and an outer panel 30, which are sequentially stacked, and the inner panel 10, the middle panel 20, and the outer 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 a conventional aluminum-plastic composite board was tested, and the test results are shown in table 1:
TABLE 1
As can be seen from table 1, compared with the conventional aluminum-plastic composite panel, the composite panel 100 provided in the embodiment of the application has better mechanical strength index and smaller surface density and reduces the weight by about 22.36% under the condition of 9.5% of thickness reduction. Therefore, when the composite board 100 is used for manufacturing the display backboard, the manufactured display backboard can maintain better strength and rigidity under a thinner thickness, 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.
Referring to fig. 3, fig. 3 is a flowchart of a method for manufacturing a back plate of a display according to an embodiment of the present application. The embodiment of the application also provides a preparation method of the display backboard, which comprises the following steps:
210, providing a composite sheet material, which may be a composite sheet material in any of the embodiments described above.
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 application, fig. 5 is a schematic cross-sectional view of a portion of a structure of the display back plate according to an embodiment of the present application, and fig. 6 is an enlarged schematic view of a region a in fig. 5. The embodiment of the application also provides a display backboard 200, which is manufactured by adopting the manufacturing method of the display backboard in any embodiment.
Referring to fig. 4 to 6, the display back plate 200 includes a back plate body 230, the back plate body 230 has a first surface 31 and a second surface 32 disposed opposite to each other, the first surface 31 is disposed towards the light emitting side of the display, and the second surface 32 is provided with first ribs 41 to improve the strength of the back plate body 230.
The area of the second surface 32 on the side of the first stiffener 41 is defined as an appearance area 51, and it is understood that the appearance area 51 is disposed directly toward the external environment, and the user can directly observe the appearance area 51 when the display back plate 200 is applied to a display device.
The area of the second surface 32 on the other side of the first stiffener 41 and the area where the first stiffener 41 is located are defined as a mounting area 52, where the mounting area 52 is used to accommodate and mount components (e.g., components such as a movement, a power supply, a sound box, etc.).
Referring to fig. 6, it will be appreciated that the second surface 32 is the surface of the outer ply 30 on the side remote from the middle ply 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 mounting area 52, and 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, a mounting convex hull 60 is disposed in the mounting region 52, a first mounting hole 61 is disposed on the mounting convex hull 60, a second mounting hole 431 is disposed on the third reinforcing rib 43, and the first mounting hole 61 and the second mounting hole 431 are used for mounting components.
Referring to fig. 4 to fig. 6, the display back panel 200 further includes a bending edge 40 connected to the back panel body 230, the bending edge 40 is disposed on a side of the back panel body 230 where the first surface 31 is located, and the bending edge 40 can be used to connect parts such as a middle frame and a hanging ring.
It can be appreciated that, in the display backboard 200 of the embodiment of the present application, by setting the structures of the installation convex hull 60, the third reinforcing rib 43, the bending edge 40 and the like, so as to install parts, thereby installing parts such as a middle frame, a machine core, a power supply, a rear shell and the like without an intermediate adapter, and the connection mode can include a buckle connection, an adhesive connection, a screw connection and the like.
In addition, the display backplate 200 of the embodiment of the present application can significantly improve the strength and rigidity of the display backplate 200 by providing the first reinforcing ribs 41, the second reinforcing ribs 42, and the third reinforcing ribs 43.
Embodiments of the present application also provide a display device, which may include the display backplate 200 in any of the above embodiments.
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 should be disposed on the first surface 31 side of the back plate body 230, i.e. the side on which the bending edge 40 is located.
Illustratively, the display device may further include a rear housing for covering the mounting area 52 of the display backplate 200.
The composite board and the preparation method thereof, the display backboard and the preparation method thereof and the display device provided by the embodiment of the application are described in detail. Specific examples are set forth herein to illustrate the principles and embodiments of the present application, with the description of the examples given above only to assist in understanding the present application. Meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

Claims (12)

1. The preparation method of the composite board is characterized in that the composite board is used for processing and preparing a display backboard, and the preparation method of the composite board comprises the following steps:
providing an inner layer board and an outer layer board, wherein the inner layer board is a fireproof PC sheet material, the material of the outer layer board comprises a second polymer material, and the second polymer material is PC resin;
providing a plurality of CFRT unidirectional tapes, and combining the CFRT unidirectional tapes together by adopting a coextrusion molding process to obtain a middle layer plate; the CFRT unidirectional tape comprises glass fiber and PC resin, wherein the content of the glass fiber is 60-70wt%, and the content of the PC resin is 30-40wt%;
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 coextrusion molding process to obtain the composite plate.
2. The method for preparing a composite board according to claim 1, wherein the number of the CFRT unidirectional tapes is 4-6, and the thickness of the single-layer CFRT unidirectional tape is 0.3-0.5 mm.
3. The method of making a composite board as set forth in claim 1, wherein the outer laminate further comprises a pigment.
4. A method of producing a composite board according to any one of claims 1 to 3, wherein the thickness of the inner layer board is 0.5mm to 0.8mm and the thickness of the outer layer board is 0.3mm to 0.7mm.
5. A composite board produced by the method of any one of claims 1 to 4.
6. A method for manufacturing a display back plate, comprising:
providing a composite board, wherein the composite board is the composite board according to claim 5;
and processing the composite board into a preset shape by adopting a hot press molding process to obtain the display backboard.
7. A display back sheet produced by the method for producing a display back sheet according to claim 6.
8. The display back panel according to claim 7, wherein the display back panel comprises a back panel body having a first surface and a second surface disposed opposite to each other, the first surface being disposed toward a light emitting side of the display, the second surface having first reinforcing ribs thereon to increase a strength of the back panel body;
the area of the second surface on one side of the first reinforcing rib is defined as an appearance area; the area on the second surface, which is located at the other side of the first reinforcing rib, and the area where the first reinforcing rib is located are defined as installation areas, and the installation areas are used for accommodating and installing parts.
9. The display back plate of claim 8, wherein a second stiffener is disposed in the appearance area, a third stiffener is disposed in the mounting area, and both the second stiffener and the third stiffener are used to increase the strength of the back plate body.
10. The display backboard of claim 9, wherein the mounting area is provided with a mounting convex hull, the mounting convex hull is provided with a first mounting hole, the third reinforcing rib is provided with a second mounting hole, and the first mounting hole and the second mounting hole are used for mounting parts.
11. The display back panel of claim 8, further comprising a folded edge coupled to the back panel body, the folded edge being disposed on a side of the back panel body where the first surface is located.
12. A display device comprising a display backplane according to any of claims 7-11.
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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CN202210012499.2A CN114393902B (en) 2022-01-06 2022-01-06 Composite board and preparation method thereof, display backboard and preparation method thereof, and display device
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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