WO2020114227A1 - 一种屏幕拼接结构及其形成方法 - Google Patents

一种屏幕拼接结构及其形成方法 Download PDF

Info

Publication number
WO2020114227A1
WO2020114227A1 PCT/CN2019/119156 CN2019119156W WO2020114227A1 WO 2020114227 A1 WO2020114227 A1 WO 2020114227A1 CN 2019119156 W CN2019119156 W CN 2019119156W WO 2020114227 A1 WO2020114227 A1 WO 2020114227A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
adhesive layer
base
glue
splicing structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/119156
Other languages
English (en)
French (fr)
Inventor
王杰
王霖
张红秀
胡飞
李屹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Appotronics Corp Ltd
Original Assignee
Appotronics Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Priority to US17/299,758 priority Critical patent/US11905442B2/en
Publication of WO2020114227A1 publication Critical patent/WO2020114227A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/255—Polyesters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C09J7/243—Ethylene or propylene polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/245—Vinyl resins, e.g. polyvinyl chloride [PVC]
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/342—Applications of adhesives in processes or use of adhesives in the form of films or foils for flying splice applications
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C09J2423/046—Presence of homo or copolymers of ethene in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/106—Presence of homo or copolymers of propene in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2427/00—Presence of halogenated polymer
    • C09J2427/006—Presence of halogenated polymer in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate

Definitions

  • the present invention relates to the field of projection screens, and in particular, to a screen splicing structure and its forming method.
  • the normals on the screen are consistent, and the screen reflects the picture uniformly; when the screen is not uniformly stressed and deformed somewhere on the screen, the direction of the normal changes there, and the picture appears there again distortion.
  • the reflective coating on the high elastic modulus screen has been coated, and the change of the normal will cause the reflection angle of the projected light here to be different from other flat points, thus visually giving the seam
  • the black line feels, therefore, it is necessary to provide a splicing structure that can be used for high elastic modulus screens.
  • the invention provides a screen splicing structure and a forming method thereof, which can effectively reduce the normal variation at the seam.
  • the present invention provides a screen splicing structure, including a base layer, an intermediate adhesive layer, and a surface layer, the base layer includes a first base and a second base, the second base is spliced with the first base, and a seam is formed at the joint.
  • the surface layer and the intermediate adhesive layer are stacked, and the intermediate adhesive layer is bonded to the base layer, the surface layer covers the joint, and the peel strength of the surface layer and the base layer is ⁇ 1000gf/inch.
  • the present invention also provides a method for forming the above-mentioned screen splicing structure, including the following steps:
  • the composite adhesive tape includes a layered second optical functional material layer, a surface layer, an intermediate adhesive layer, and a release film layer;
  • the present invention also provides a method for forming the above-mentioned screen splicing structure, including the following steps:
  • the glue is evenly applied to the back or surface layer, the glue is one of light curing, thermosetting or pressure-sensitive adhesive;
  • the present invention also relates to a method of forming the above-mentioned screen splicing structure, including the following steps:
  • the glue is one of light curing, thermosetting or pressure-sensitive adhesives
  • the screen splicing structure provided by the present invention can effectively reduce the amount of normal variation at the splicing joint by bonding the middle adhesive layer to the base layer, covering the middle adhesive layer by the surface layer and stitching.
  • the method for forming the screen splicing structure provided by the present invention has a simple process, and the adhesive layer is provided with a coating sequence, chemical treatment of the surface of the adhesive layer, and flattening of bubbles or folds between the different splicing layers to ensure the adhesive layer. The flatness and the bonding force between the glued layers, so that the local normal change at the joint is minimized.
  • FIG. 1 is a schematic structural diagram of a screen splicing structure provided by an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a screen splicing structure provided by another embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the formation process of a screen splicing structure of the present invention.
  • FIG. 4 is a schematic diagram of the formation process of another screen splicing structure of the present invention.
  • FIG. 5 is a schematic structural view of a composite tape of a screen splicing structure of the present invention.
  • FIG. 6 is a schematic structural view of a composite tape of another screen splicing structure of the present invention.
  • FIG. 7 is a schematic structural diagram of a screen splicing structure provided by another embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a screen splicing structure provided by another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a screen splicing structure provided by still another embodiment of the present invention.
  • the invention provides a screen splicing structure, including a base layer, an intermediate adhesive layer and a surface layer, wherein the base layer includes a first base and a second base, and the sides of the first base and the second base are spliced and formed at the joint Patchwork; the surface layer is bonded to the base layer through the middle adhesive layer. Specifically, the surface layer is bonded to the first substrate and the second substrate through the intermediate adhesive layer, and the surface layer covers the joint.
  • the base layer is selected from any one of polyethylene terephthalate, polypropylene, polyethylene, and polyvinyl chloride.
  • the elastic modulus of the above materials is greater than 2.5Gpa, which is a high elastic modulus material and is on the same screen. Compared with materials with low elastic modulus, it has a smaller amount of deformation under vibration, which helps to improve the viewing effect.
  • the base layer includes a front surface for receiving the projected image and a corresponding back surface.
  • the splicing structure of the present invention Since the screen with a high elastic modulus material is easily deformed during cutting, resulting in defects such as normal change and glue overflow during splicing, the inventor found through experimental research that the splicing structure of the present invention has an elastic modulus greater than 2.5 The base layer of Gpa can also obtain higher reliability, and the normal change is small.
  • the surface layer can be bonded to the front side of the base layer through the intermediate adhesive layer, that is, front side splicing; or can be bonded to the back side of the base layer through the intermediate adhesive layer, that is, back side splicing.
  • the peel strength of the surface layer and the base layer is ⁇ 1000gf/inch, so as to ensure the minimum change of the normal of the screen surface. The peel strength can be measured by a peel strength tester.
  • the surface layer is a transparent material and can be applied to light-curable glue. It is preferable that the surface layer and the base layer have the same material to ensure the same shrinkage rate under the influence of the environment.
  • the middle adhesive layer is formed by curing the glue.
  • the glue is selected from any one of light-setting glue, thermosetting glue or pressure-sensitive glue, such as Dymax3094-Gel-F, which linearly shrinks by 0.4%, and the light curing is fast Curing.
  • the intermediate adhesive layer covers at least a part of the side of the base layer to be spliced, so that the surface layer is bonded to the base layer through the intermediate adhesive layer, thereby achieving the purpose of splicing.
  • the intermediate adhesive layer can also cover the joint seam. It should be understood that the intermediate adhesive layer can also be partitioned at the joint seam, that is, the intermediate adhesive layer only covers the surface area of the side of the base layer to be spliced. Does the intermediate adhesive layer need to cover the joint seam? Choose according to the reliability of the splicing structure.
  • the middle glue layer when the front layer of the base layer is spliced, because the surface layer covers the seam, it is preferable to cover the seam with the middle glue layer, because part of the glue will penetrate into the seam through the capillary effect, and the middle glue layer will form the first base
  • the second substrate is directly bonded to improve the reliability of the splicing structure; when the back layer of the base layer is spliced, in order to prevent the glue from penetrating from the joint to the front of the base layer and affecting the viewing screen, it is preferred that the middle adhesive layer is in the joint
  • the partitioning scheme or use glue with a viscosity of 1w to 10wcps.
  • the glue in this viscosity range has a very low capillary effect, which can prevent too much glue from penetrating into the front through the joint.
  • glue with low capillary effect the scheme of covering the joint seam with the middle glue layer can also be accepted.
  • the invention can increase the thickness of the middle adhesive layer so that the thickness of the middle adhesive layer is greater than the height of the edge protrusions, can avoid the protrusions when covering the surface layer, and ensures the flatness of the surface layer.
  • a connection layer may be added, the connection layer is located between the base layer and the surface layer, and is bonded to the surface layer and the base layer through the connection adhesive layer and the intermediate adhesive layer, respectively, the sum of the thicknesses of the connection layer and the intermediate adhesive layer Higher than the height of the edge protrusion, the protrusion can be avoided when the surface layer is covered.
  • the inventor discovered through experiments that the connection layer can further improve the stability of the screen splicing structure.
  • the connecting layer receives the force from the base layer and the surface layer at the same time.
  • the direction of the force is opposite, so it will act as a buffer to a certain extent.
  • the material of the connecting layer is preferably the same as the base layer or the surface layer.
  • the thickness of the base layer is usually 100-250um.
  • the thickness of the surface layer is designed to be 100-250um, and the splicing layer is designed to be 50-250um.
  • the viewers on both sides of the screen will observe a clear picture division line at the edge of the surface layer, which can be sprayed on the edge of the surface layer with the same screen surface Optical functional materials are resolved.
  • the inventors obtained through experiments that when the surface layer material is polyethylene terephthalate and the thickness is designed to be 5 to 10um, it can eliminate the picture division caused by the edge of the surface layer, and the splicing structure has Good reliability.
  • the above optical functional materials include but are not limited to one or more of metal, glass, and resin.
  • the metal is, for example, aluminum powder, silver powder, or aluminum silver powder
  • the glass is, for example, glass powder or glass beads.
  • the formed optical functional material layer may use a uniform coating layer formed by the above optical functional material, or may be a layer with a special microstructure, such as a sawtooth structure layer that can directionally reflect projected light.
  • the optical functional material may be essentially any one or more materials that have an improved effect on the reflection of the projected screen as disclosed in the prior art in the field of projection screens.
  • the present invention provides a screen splicing structure 10 that includes a base layer 11, an intermediate adhesive layer 13 and a surface layer 15.
  • the base layer 11 includes a first base 111 and a second base 112, and a seam 12 is formed between the second base 112 and the first base 111.
  • the middle adhesive layer 13 and the surface layer 15 are stacked, and the surface layer 15 covers the joint seam 12.
  • the base layer 11 includes a front surface 11a and a rear surface 11b facing away from each other.
  • the front surface 11a is provided with a first optical functional material layer 113 and an optical functional material default area 114.
  • the front surface 11a can be used as the front surface of the screen, that is, the viewing surface.
  • the optical functional material default area 114 is provided along the seam 12.
  • the intermediate adhesive layer 13 and the surface layer 15 are disposed in the default area 114 of the optical functional material on the front surface 11a for splicing.
  • the front splicing method can directly see the splicing situation between the first optical functional material layer 113 on the front surface 11a of the first substrate 111 and the second substrate 112 during the splicing process, which greatly reduces Difficulty in twelve alignments. Further, the front stitching method can be used to block the stitching, to avoid distortion of the projected picture due to the change of the normal at the stitching during use, resulting in a reduced viewing experience.
  • the surface layer 15 includes a glued surface 15a and an outer surface 15b facing away from each other.
  • the glued surface 15a is glued with the middle glue layer 13, and the outer surface 15b is provided with a second optical functional material layer 115.
  • the outer surface 15b of the surface layer 15 is provided with a second optical functional material layer 115 having an optical effect, which ensures that the color of the seam 12 is consistent with the color of the display screen, which greatly enhances the visual viewing effect of the picture.
  • the base layer 11 and the surface layer 15 are effectively bonded through the intermediate adhesive layer 13, and the surface layer is evenly covered on the joint seam 12, so as to realize the purpose of screen splicing and meet the needs of viewing on a large screen.
  • the base layer 11 is polypropylene
  • the surface layer 15 is polypropylene
  • the middle adhesive layer is thermosetting adhesive
  • the first optical functional material layer 113 and the second optical functional material layer 116 are aluminum silver powder coatings.
  • the aluminum silver powder coating can be formed by a coating process or a magnetron sputtering process.
  • the thickness of the base layer 11 is 100 um
  • the thickness of the intermediate adhesive layer 13 is 2 um
  • the thickness of the surface layer 15 is 5 um.
  • the sum of the thicknesses of the middle adhesive layer 13 and the surface layer 15 is much lower than the thickness of the base layer 11, and the splicing structure 10 basically does not affect the visual presentation effect of the entire screen.
  • the base layer 11 and the surface layer 15 may be any of polyethylene terephthalate, polyvinyl chloride, and polyethylene, and the intermediate adhesive layer 13 may also be a light-cured or pressure-sensitive type gum.
  • the thickness of the base layer 11 may be any value from 100 to 250 um
  • the thickness of the intermediate adhesive layer 13 may be any value from 2 to 3 um
  • the thickness of the surface layer 15 may be any value from 5 to 10 um.
  • the screen splicing structure 10 a further includes a third optical functional material layer 116 on the side of the surface layer 15, and the width of the third optical functional material layer 116 decreases from the glue surface 15 a toward the outer surface 15 b.
  • the existence of the slope can eliminate the above-mentioned picture dividing line.
  • the intermediate glue layer 13 also includes a portion located in the seam 12, and some of the glue in the seam 12 penetrates through the capillary effect to form the glue of the intermediate glue layer 13 directly
  • the function of bonding the first substrate 111 and the second substrate 112 can reduce the deformation stress generated by bonding the first substrate 111 and the second substrate 112 through the surface layer 15 respectively, and improve the reliability of the spliced structure.
  • the formation of the above splicing structure 10 specifically includes the following steps:
  • the composite adhesive tape 16 includes a layered second optical functional material layer 115, a surface layer 15, an intermediate adhesive layer 13, and a release film layer 14;
  • the method for removing the optical functional material layer 113 in step (2) can be removed by using strong adhesive tape, or can be erased by using a solvent.
  • the composite adhesive tape 16 in step (3) can be produced for roll production, reducing the period of waiting for the middle adhesive layer 13 to react with the surface layer 15 during splicing.
  • the composite adhesive tape 16 in step (3) preferably further includes a third optical functional material layer 116 located on the side surface 15c of the surface layer 15.
  • the width of the third optical functional material layer 116 extends from the bonding surface 15a to the outer surface 15b Diminishing.
  • the third optical functional material layer 116 may be formed together with the production of the composite adhesive tape 16, for example, using a roll-to-roll production process, which is formed by spraying and curing.
  • the second optical functional material layer 115, the intermediate adhesive layer 13 and the surface layer 15 are combined with the release film layer 14 to form a composite tape 16
  • the intermediate adhesive layer 13 is located between the surface layer 15 and the release film layer 14
  • the first Two optical functional material layers 115 are located on the outer surface 15b of the surface layer 15, and the specific forming method of the composite tape 16 includes the following steps:
  • optical functional material is transferred to the outer surface 15b of the surface layer 15.
  • the chemical treatment of the glued surface 15a of the surface layer 15 specifically includes the application of a polyurethane coating so that the surface adhesion of the glued surface 15a is 35-45dy to increase its Adhesion performance to glue.
  • the glued surface of the surface layer 15 may also undergo corona treatment, and is not limited to the chemical coating treatment in this embodiment.
  • step (2) glue is applied to the glued surface 15a of the chemically treated surface layer, and the coating method for forming the intermediate glue layer 13 is screen printing. In other embodiments, die coating or blade coating may also be used. , Any of dispensing.
  • a second optical functional material layer 115 is formed on the outer surface 15b of the surface layer 15 using a molding process.
  • the optical functional material may be transferred to the side surface 15c to form the third optical functional material layer 116.
  • a soft film process may also be used on the outer surface 15b of the surface layer 15 and The second optical functional material layer 115 and the third optical functional material layer 116 are formed on the side surface 15c. Both process methods can avoid the problem that the surface layer 15 is too low in thickness and cannot be demolded.
  • the second optical functional material layer 115 and the third optical functional material layer 116 should be the same as the first optical functional material layer 113 on the base layer, so as to eliminate the parallax of the picture.
  • the first optical functional material layer 113, the second optical functional material layer 115, and the third optical functional material layer 116 are directional reflection projection rays
  • the zigzag structure of the optical functional material is made of resin for easy molding.
  • the middle adhesive layer 13 is pressure-sensitive adhesive
  • the surface layer 15 is polyethylene terephthalate
  • the base layer 11 is polyethylene terephthalate.
  • the surface layer 15 may be any one of polyvinyl chloride, polypropylene, and polyethylene
  • the base layer 11 may also be any one of polyvinyl chloride, polypropylene, and polyethylene, which is not limited to Polyethylene terephthalate.
  • the surface layer 15 and the base layer 11 are the same material, under the influence of the environment, the surface layer 15 and the base layer 11 have the same shrinkage rate, and will not cause different interlayer tears in the splicing structure 10a due to the different shrinkage rates In this case, the stability of the splicing structure 10a is ensured.
  • the thickness of the base layer 11 is 100 um
  • the thickness of the intermediate adhesive layer 13 is 2 um
  • the thickness of the surface layer 15 is 10 um
  • the thickness of the release film layer 14 is 50 um.
  • the thickness of the release film layer 14 is much greater than the thickness of the intermediate adhesive layer 13 and the surface layer 15, which is convenient for the composite tape 16 to tear off the release film layer 14, and thus can be quickly combined with the base layer 11.
  • the screen splicing structure 10a can effectively reduce the normal change of the surface of the splicing structure.
  • the outer surface 15b of the surface layer 15 has a structure with an optical effect to ensure that its position is the same as the color of the display screen Consistency greatly improves the viewing effect of the picture.
  • the steps of forming the screen splicing structure 10a are simple, and the shrinkage matching between the glue layers ensures the stability of the screen splicing structure 10a.
  • the back stitching of the surface layer 15 can also be used.
  • the present invention provides a screen splicing structure 20.
  • the screen splicing structure 20 includes a base layer 21, an intermediate adhesive layer 23, and a surface layer 25.
  • the base layer 21 includes a first substrate 211, a second substrate 212, and a second substrate A seam 22 is formed between 212 and the first substrate 211.
  • the surface layer 25 is bonded to the base layer 21 through the intermediate adhesive layer 23, and the surface layer 25 covers the joint seam 22.
  • the base layer 21 includes a front surface 21a and a back surface 21b facing away from each other.
  • the front surface 21a includes an optical functional material layer (not shown), and the back surface 21b can be used as the back surface of the screen.
  • the first base 211 forms a first protrusion 213 at the end of the seam 22
  • the second base 212 forms a second protrusion 214 at the end of the seam 22
  • the first protrusion 213 and the second protrusion 214 protrude from the back 21b.
  • the intermediate adhesive layer 23 is divided into two sections, namely a first intermediate adhesive layer 231 and a second intermediate adhesive layer 232.
  • the first intermediate adhesive layer 231 is adjacent to the first protrusion 213 and is glued to the back surface 21b of the first substrate 211
  • the second intermediate adhesive layer 232 is adjacent to the second protrusion 214 and is adhesively bonded to the back surface 21b of the second substrate 212.
  • the manner in which the middle adhesive layer 23 is divided into two sections of the first middle adhesive layer 231 and the second middle adhesive layer 232 can prevent the glue from penetrating into the front surface of the base layer 21 from the joint and affecting the picture.
  • the height of the first protrusion 213 and the second protrusion 214 is H1
  • the thickness of the first intermediate glue layer 231 and the second intermediate glue layer 232 is H2, where H2>H1.
  • the surface layer 25 avoids the first protrusion 213 and the second protrusion 214 generated by the irregular deformation of the base layer 21, which ensures the flatness of the surface layer 25, thereby greatly reducing the normal at the front side 21a corresponding to the splicing structure 20 Changes in normals relative to unstitched flat areas.
  • this embodiment can prevent the first protrusion 213 and the second protrusion 214 from causing the accumulated heat of the glue in the irregular area when the middle glue layer 23 covers the joint 22 as a whole
  • the problem of deforming the base layer 21 Through the middle adhesive layer 23, the surface layer 25 is evenly covered on the seam 22 and the base layer 21 and the surface layer 25 are effectively bonded to achieve the purpose of splicing the screen to meet the needs of viewing on a large screen.
  • the above method for forming the screen splicing structure 20 may include the following steps:
  • the method for forming the spliced structure 20 may also include the following steps:
  • step (2) the glue is evenly applied to the surface layer 25 to form the intermediate adhesive layer 23.
  • the coating method may be blade coating, in other embodiments, it may also be a wire mesh or a mold. Either coating or dispensing.
  • step (3) After covering in step (3), use a roller to flatten the air bubbles between the surface layer 25 and the intermediate adhesive layer 23.
  • the air bubbles between the intermediate adhesive layer 23 and the base layer 21 can effectively avoid voids, wrinkles, deformations and visual effects. Any factor that affects the surface of the screen in a discernible way to achieve the best viewing effect.
  • the intermediate adhesive layer 23 may be a pressure sensitive adhesive.
  • the base layer 21 may be polypropylene, and the surface layer 25 may be polypropylene.
  • the thickness of the intermediate adhesive layer 23 is 5 um, the thickness of the base layer 21 is 120 um, and the thickness of the surface layer 25 is 8 um.
  • the base layer 21 and the surface layer 25 may be any of polyethylene terephthalate, polyvinyl chloride, and polyethylene, and the intermediate adhesive layer 23 may also be a light-cured or pressure-sensitive type gum.
  • the thickness of the base layer 21 may be any value from 100 to 250 um
  • the thickness of the intermediate adhesive layer 23 may be any value from 2 to 3 um
  • the thickness of the surface layer 25 may be any value from 5 to 10 um.
  • the first intermediate adhesive layer 231 and the second intermediate adhesive layer 232 are both double-layer structures.
  • the double-layer structure is the first adhesive layer 233 and the second adhesive layer 234, the first The adhesive layer 233 is located between the base layer 21 and the second adhesive layer 234.
  • the first intermediate adhesive layer 231 and the second intermediate adhesive layer 232 may also be a structure of multiple adhesive layers such as 3, 4, 5, ... layers.
  • the above method for forming the screen splicing structure 20a may include the following steps:
  • step (4) using the roller to flatten the air bubbles between the surface layer 25 and the second adhesive layer 234 after covering in step (4) can effectively avoid voids, wrinkles, deformation, and influence in a visually distinguishable manner Any factor on the screen surface to achieve the best film and television effects.
  • the forming method of the splicing structure 20a may also include the following steps:
  • the formation method of the screen splicing structure 20a is simple in process, and the flatness and surface layer of the surface layer 25 are ensured by setting the coating order of different adhesive layers and flattening the bubbles or folds between the base layer 21 and the first adhesive layer 233 The bonding force between the intermediate adhesive layer 23 and the intermediate adhesive layer 23 and the surface layer 25.
  • the first adhesive layer 233 may be thermosetting adhesive
  • the second adhesive layer 234 may be photocurable adhesive
  • the base layer 21 may be polyvinyl chloride
  • the surface layer 25 may be polychloride
  • the ethylene is corona modified to increase the wettability with the second adhesive layer 234.
  • the surface layer 25 may also be added with a chemical coating to improve the wettability with the second adhesive layer 234.
  • the base layer 21 and the surface layer 25 may be any of polyethylene terephthalate, polypropylene, polyethylene, or polyvinyl chloride, and polyvinyl chloride is only used as the base layer in the above splicing structure 20a And a preferred embodiment of the surface layer.
  • the first adhesive layer 233 may also be photo-curable or pressure-sensitive adhesive
  • the second adhesive layer 234 may also be pressure-sensitive or thermosetting adhesive
  • the thickness of the intermediate adhesive layer 23 can be set larger than the thickness of the first protrusion 213 and the second protrusion 214 so that the surface layer 25 can avoid the irregular deformation of the base layer 21, which ensures
  • the flatness of the surface layer 25 and the stability of the splicing structure reduce the normal variation of the surface of the splicing structure 20a and improve the image display quality.
  • the viewing surface of the surface layer of the splicing structure is relative to the viewing surface of the base layer 21
  • the thickness will be larger, forming a more obvious step boundary, and the dividing line of the image screen at the step boundary is also more obvious.
  • the optical functional layer with the same viewing surface, covers the step boundary, and the width of the optical functional layer decreases along the base layer 14 toward the thickness direction of the surface layer 15 to form a layer between the surface layer 15 and the base layer 14 Bevel, to eliminate the picture division caused by the step boundary.
  • a screen splicing structure 30 is also provided.
  • the screen splicing structure 30 further includes a connecting layer 24.
  • the connecting layer is located between the base layer 21 and the surface layer 25.
  • the layer 241 and the intermediate adhesive layer 23 are respectively bonded to the surface layer 25 and the base layer 21, and the connecting layer 24 can further improve the stability of the screen splicing structure.
  • the connecting layer 24 is simultaneously received from the base layer 21 and the surface
  • the force of the layer 25 is in the opposite direction, so it acts as a buffer to some extent.
  • the connecting layer 24 is used for back stitching, and the sum of the thickness of the connecting layer 24 and the middle adhesive layer 23 is greater than the height H1 of the first protrusion 213 and the second protrusion 214 of the cut edge of the base layer 21, so that The surface layer 25 avoids the first protrusion 213 and the second protrusion 214 of the base layer 21, which ensures the flatness of the surface layer 25, thereby improving the stability of the splicing structure 30, and at the same time reducing or avoiding the splicing 22 of the splicing structure Normal changes.
  • the base layer 21, the connecting layer 24 and the surface layer 25 of the screen splicing structure 30 are preferably polypropylene
  • the intermediate adhesive layer 23 and the connecting adhesive layer 241 are thermosetting adhesives
  • the viscosity is 1w-10wcps
  • the curing shrinkage rate is ⁇ 1.5 %
  • low viscosity and low curing shrinkage rate make the middle adhesive layer 23 and the connecting adhesive layer 241 have a very low capillary effect, ensuring that the thermosetting adhesive will not penetrate the front surface 21a of the base layer from the joint 22, avoiding the appearance Make an impact.
  • the intermediate adhesive layer 23 and the connecting adhesive layer 241 may also be one of light-curing and pressure-sensitive adhesives.
  • the thickness of the connecting layer 24 is 60 um, and the thickness of the surface layer 25 is 250 um, which has sufficient rigidity while ensuring the same shrinkage.
  • the thickness of the intermediate adhesive layer 23 and the connecting adhesive layer 241 is 10 um. Due to the difference in material properties, the stiffness of the connecting layer 24 is significantly better than the stiffness of the intermediate adhesive layer 23. The presence of the connecting layer 24 can increase the stiffness of the splicing structure 30 and make the projection screen imaging effect better.
  • the method for forming the screen splicing structure 30 includes the following steps:
  • the coating method of the intermediate adhesive layer 23 and the connecting adhesive layer 241 may be a die coating method, and in other embodiments, it may be any of wire mesh, knife coating, and dispensing.
  • step (4) can also be repeated to increase the thickness of the connecting glue layer 241 to ensure the rigidity of the screen splicing structure 30, so that the projection screen is not easy to bend at the seam 22, and the imaging effect is more it is good.
  • the method for forming the splicing structure 30 provided in this embodiment has a simple process.
  • the flatness of the surface layer 25 and the connection between the surface layer 25 and the connecting glue are ensured by setting the coating order of different adhesive layers and flattening the bubbles/folds between the different splicing layers.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

本发明提供一种屏幕拼接结构，包括基底层、中间胶层与表面层，基底层包括第一基底与第二基底，第二基底与第一基底拼接并在拼接处形成拼缝，表面层与中间胶层层叠设置，通过中间胶层与基底层粘接，表面层覆盖拼缝，表面层与基底层的剥离强度≥1000gf/inch。本发明还涉及一种形成上述屏幕拼接结构的方法。本发明提供的屏幕拼接结构通过中间胶层与基底层胶合、表面层覆盖中间胶层及拼缝可以有效降低拼缝处的法线变化。

Description

一种屏幕拼接结构及其形成方法 技术领域
本发明涉及投影屏幕领域，具体而言，涉及一种屏幕拼接结构及其形成方法。
背景技术
随着目前电影行业的发展，高质量的电影屏幕的需求也随之增加。其中，具有高弹性模量的屏幕被广泛用于高增益、高反射的保偏屏幕上，其具有良好的弹性性能，相较于低弹性模量的屏幕可以采用常规的震动方式消除散斑。但目前工艺局限于设备幅宽，仅能进行涂覆后再加工的方式进行制作，具体是需要进行屏幕拼接操作，对于采用高弹性模量材料的屏幕来讲，其弹性性能好，拼接后拼缝处的法线容易发生变化。法线是指垂直于屏幕上任意一处平面的参考线。通常在屏幕平整状态下，屏幕上各处法线一致，屏幕反射的画面均匀；当屏幕受力不均匀，屏幕上某处发生形变，则该处的法线方向发生变化，画面再该处出现失真。由于在拼接前，高弹性模量的屏幕上的反射涂层已经涂覆好，法线的变化会导致投影光在此处的反射角度不同于其他平整点，从而在视觉上给人拼缝处黑线感，因此，提供一种可用于高弹性模量屏幕的拼接结构是必要的。
发明内容
本发明提供了一种屏幕拼接结构及其形成方法，可以有效降低拼缝处的法线变化量。
本发明实施例通过以下技术方案来实现上述目的。
第一方面，本发明提供一种屏幕拼接结构，包括基底层、中间胶层与表面层， 基底层包括第一基底与第二基底，第二基底与第一基底拼接并在拼接处形成拼缝，表面层与中间胶层层叠设置，通过中间胶层与基底层粘接，表面层覆盖拼缝，表面层与基底层的剥离强度≥1000gf/inch。
第二方面，本发明还提供一种形成上述屏幕拼接结构的方法，包括以下步骤：
(1)分别选定第一基底与第二基底的一个侧边，将两个侧边临近以形成拼缝；
(2)去除距离侧边预设宽度范围内的光学功能材料层，形成光学功能材料缺省区；
(3)提供复合胶带，复合胶带包括层叠设置的第二光学功能材料层、表面层、中间胶层和离型膜层；
(4)将离型膜层去除，将复合胶带余下部分贴附于拼缝，覆盖完成后使用辊筒将中间胶层同基底层间气泡或褶皱展平，固化中间胶层。
第三方面，本发明还提供一种形成上述屏幕拼接结构的方法，包括以下步骤：
(1)分别选定第一基底与第二基底的一个侧边，将两个侧边临近以形成拼缝；
(2)将胶水均匀涂布至背面或表面层，胶水为光固、热固或压敏型贴合剂中的一种；
(3)将表面层覆盖至中间胶层，覆盖完成后使用辊筒将表面层同中间胶层间的气泡或褶皱展平，固化中间胶层。
第四方面，本发明还涉及一种形成上述屏幕拼接结构的方法，包括以下步骤：
(1)分别选定第一基底与第二基底的一个侧边，将两个侧边临近以形成拼缝；
(2)提供连接层，将胶水均匀涂布至连接层形成中间胶层，胶水为光固、热固或压敏型贴合剂中的一种；
(3)将连接层上的中间胶层覆盖于基底层的背面，覆盖完成后使用辊筒将中间胶层同基底层之间的气泡或褶皱展平；
(4)固化中间胶层，将胶水均匀涂覆至表面层，胶水为光固、热固或压敏型贴合剂中的一种；
(5)将表面层覆盖于连接层，覆盖完成后使用辊筒将连接胶层同连接层之间的气泡或褶皱展平，固化连接胶层。
本发明提供的屏幕拼接结构通过中间胶层与基底层胶合、表面层覆盖中间胶层及拼缝可以有效降低拼缝处的法线变化量。本发明提供的屏幕拼接结构的形成方法，工艺简单，通过设置不同胶接层的涂覆顺序、对胶接层表面的化学处理及将不同拼接层间的气泡或褶皱展平来保证胶层的平整性及胶接层间的结合力，进而使拼缝处局部法线变化最小。
本发明的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明一种实施方式提供的屏幕拼接结构的结构示意图；
图2是本发明又一种实施方式提供的屏幕拼接结构的结构示意图；
图3是本发明一种屏幕拼接结构的形成过程示意图；
图4是本发明又一种屏幕拼接结构的形成过程示意图；
图5是本发明一种屏幕拼接结构的复合胶带的结构示意图；
图6是本发明又一种屏幕拼接结构的复合胶带的结构示意图；
图7是本发明另一种实施例提供的屏幕拼接结构的结构示意图；
图8是本发明又一种实施例提供的屏幕拼接结构的结构示意图；
图9是本发明再一种实施例提供的屏幕拼接结构的结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明提供一种屏幕拼接结构，包括：基底层、中间胶层和表面层，其中，基底层包括第一基底与第二基底，第一基底与第二基底的侧边拼接并在拼接处形成拼缝；表面层通过中间胶层与基底层粘接。具体地，表面层通过中间胶层与第一基底和第二基底粘接，且表面层覆盖拼缝。
基底层选自聚对苯二甲酸乙二醇酯、聚丙烯、聚乙烯、聚氯乙烯中的任一种，上述材料的弹性模量大于2.5Gpa，属高弹性模量材质，在相同的屏幕震动情况下相对于低弹性模量的材料具有较小的变形量，有助于提高观影效果。基底层包括一用于接收投影画面的正面和与之对应的背面。由于高弹性模量材质的屏幕在切割时切口极易发生形变，从而导致拼接时产生法线变化、溢胶等缺陷，发明人通过实验研究发现，通过本发明的拼接结构，弹性模量大于2.5Gpa的基底层 也可以获得较高的可靠性，法线变化小。
表面层可以通过中间胶层粘接于基底层的正面，即正面拼接；也可以通过中间胶层粘接于基底层的背面，即背面拼接。表面层与基底层的剥离强度≥1000gf/inch，以此保证屏幕表面法线变化最小。剥离强度可通过剥离强度测试仪测得。表面层为透明材料，可适用于光固型胶水，优选表面层与基底层的材料相同，保证在环境影响下有同样的收缩率。
中间胶层由胶水固化形成，优选地，该胶水选自光固型胶水、热固型胶水或压敏胶水中的任意一种，例如Dymax3094-Gel-F，其线性收缩0.4％，光固快速固化。
中间胶层至少覆盖基底层待拼接侧边的部分区域，以实现表面层通过中间胶层与基底层粘接，进而起到拼接的目的。中间胶层还可以覆盖拼缝，应当理解的是，中间胶层也可以在拼缝处隔断，即中间胶层仅覆盖基底层待拼接侧边的表面区域，中间胶层是否需要覆盖拼缝可以根据拼接结构的可靠性自行选择。例如，当采用基底层正面拼接方式时，由于表面层覆盖拼缝，此时优选中间胶层覆盖拼缝，原因在于部分胶水会通过毛细效应渗入拼缝，形成的中间胶层将第一基底与第二基底直接粘接，提高拼接结构的可靠性；当采用基底层背面拼接方式时，为避免胶水从拼缝处渗透到基底层正面，影响观影画面，此时优选中间胶层在拼缝处隔断的方案，或者选用粘度为1w～10wcps的胶水，该粘度范围的胶水具有极低的毛细效应，可以避免过多的胶水通过拼缝渗透到正面。当采用具有低毛细效应的胶水时，中间胶层覆盖拼缝的方案也可被接受。
需要说明的是，由于基底在分切过程中刀具的高强度切割应力会导致入刀口处的基材发生形变，即基底被刀具切出的边缘会沿切割路径出现凸起。因此， 当采用背面拼接的方式时，需要避免因上述凸起导致拼接结构不稳定，使得拼缝处的法线变化造成投影画面失真。
本发明可以通过增加中间胶层的厚度，使中间胶层厚度大于边缘凸起的高度，在将表面层覆盖时可避开凸起，保证了表面层的平整性。进一步地，还可以增加连接层，该连接层位于基底层与表面层之间，通过连接胶层和中间胶层分别与表面层和基底层粘接，该连接层和中间胶层的厚度之和大于边缘凸起的高度，在表面层覆盖时可避开凸起。发明人在经过实验发现，该连接层可进一步提高屏幕拼接结构的稳定性。其原因是，当屏幕拉伸时，连接层同时受到来自基底层与表面层的作用力，该作用力方向相反，因此会在一定程度上起到缓冲的作用。连接层优选与基底层或表面层的材料相同。
基底层厚度通常为100～250um。为保证拼接结构的可靠性，表面层厚度设计为100～250um，拼接层设计为50～250um。对于正面拼接的方式来讲，表面层厚度大于100um时，屏幕两侧的观众会在表面层的边缘处观察到明显的画面分割线，对此可通过在表面层边缘处喷涂与屏幕表面相同的光学功能材料解决。或者降低表面层厚度，发明人通过实验得到，当表面层材料为聚对苯二甲酸乙二醇酯，厚度设计为5～10um时，可以消除表面层边缘造成的画面分割感，且拼接结构具有不错的可靠性。
需要说明的是，上述的光学功能材料包括但不限于金属、玻璃、树脂中的一种或多种，具体地，金属例如是铝粉、银粉或者铝银粉，玻璃例如是玻璃粉或玻珠，所形成的光学功能材料层可以利用上述光学功能材料形成的均匀涂层，也可以是具有特殊微结构的层，例如可定向反射投影光线的锯齿结构层。为保证通用性，光学功能材料实质上是可以选用投影屏幕领域内的现有技术所公开的任意 一种或多种对投影画面的反射具有改善效果的材料。
在一种可能的实施方式中，请参阅图1，本发明提供一种屏幕拼接结构10，其包括基底层11，中间胶层13及表面层15。基底层11包括第一基底111及第二基底112，第二基底112与第一基底111之间形成拼缝12。中间胶层13与表面层15层叠设置，表面层15覆盖拼缝12。
基底层11包括相互背离的正面11a和背面11b，正面11a设有第一光学功能材料层113和光学功能材料缺省区114，正面11a可以用作屏幕的正面，即观影面。光学功能材料缺省区114沿所述拼缝12设置。中间胶层13和表面层15设置于正面11a的光学功能材料缺省区114进行拼接。相对于在背面11b进行拼接的情况，正面拼接的方式在拼接过程中可以直接看到第一基底111与第二基底112的正面11a上第一光学功能材料层113间的拼接情况，大大降低了拼缝12对位的难度。进一步地，采用正面拼接的方式可以遮挡拼缝，避免在使用过程中因拼缝处的法线变化造成投影画面失真，导致观影体验降低。
表面层15包括相互背离的胶合面15a和外表面15b，胶合面15a与中间胶层13胶合，外表面15b设有第二光学功能材料层115。表面层15的外表面15b带有具有光学效果的第二光学功能材料层115，保证拼缝12处同显示屏幕的色彩一致，极大地提升了画面的观影视觉效果。通过中间胶层13将基底层11与表面层15有效粘接，并使表面层平整地覆盖在拼缝12之上，实现屏幕拼接的目的，满足大屏观影的需求。上述拼接结构10中，基底层11为聚丙烯，表面层15为聚丙烯，中间胶层为热固胶，第一光学功能材料层113及第二光学功能材料层116为铝银粉涂层，该铝银粉涂层可以通过涂布工艺形成，也可以通过磁控溅射工艺形成。基底层11的厚度为100um，中间胶层13的厚度为2um，表面 层15的厚度为5um。中间胶层13与表面层15的厚度之和远低于基底层11的厚度，该拼接结构10基本不会影响整个屏幕的视觉呈现效果。
在其他实施方式中，基底层11、表面层15也可以为聚对苯二甲酸二醇酯、聚氯乙烯、聚乙烯中的任一种，中间胶层13也可以为光固或压敏型胶。基底层11的厚度可以为100～250um中的任一值，中间胶层13的厚度可以为2～3um中的任一值，表面层15的厚度可以为5～10um中的任一值。
采用表面层15正面拼接的方式虽然可以遮挡拼缝12，但由于表面层15具有一定的厚度，该厚度会导致画面在所述表面层15的边缘处出现明显的分割线，且观看角度越大，该分割线越明显。参阅图2，优选地，屏幕拼接结构10a还包括位于所述表面层15侧面的第三光学功能材料层116，该第三光学功能材料层116的宽度自胶合面15a向外表面15b的方向递减，以形成一连接表面层15上第二光学功能材料层115和基底层11上第一光学功能材料层113的斜面，该斜面的存在可消除上述画面分割线。
优选地，中间胶层13除了位于缺省区114的部分之外，还包括位于拼缝12内的部分，拼缝12内的有部分通过毛细效应渗入的形成中间胶层13的胶水起到直接粘接第一基底111和第二基底112的作用，可以减小通过表面层15分别粘接第一基底111和第二基底112所产生的形变应力，提高拼接结构的可靠性。
参阅图3，上述的拼接结构10的形成，具体包括以下步骤：
(1)分别选定第一基底111与第二基底112的一个侧边，将两个所述侧边临近以形成拼缝12；
(2)去除距离侧边上述两个基底的正面11a上距离各自选定的侧边至少5mm宽度范围内的光学功能材料层113，形成光学功能材料缺省区114；
(3)提供复合胶带16，复合胶带16包括层叠设置的第二光学功能材料层115、表面层15、中间胶层13和离型膜层14；
(4)将复合胶带16中的离型膜层14去除，将复合胶带16贴附于拼缝12，覆盖完成后使用辊筒将中间胶层13同基底层11间气泡或褶皱展平，固化中间胶层13。
其中在步骤(2)中去除光学功能材料层113的方法可使用强力胶带粘除，也可使用溶剂擦除。在步骤(3)中的复合胶带16可为成卷生产制作，降低拼接时等待中间胶层13与表面层15反应的周期。参阅图4，步骤(3)中的复合胶带16优选还包括位于表面层15侧面15c的第三光学功能材料层116，第三光学功能材料层116的宽度自胶合面15a向外表面15b的方向递减。第三光学功能材料层116可以随复合胶带16的生产一起形成，例如利用卷对卷的生产工艺，通过喷涂、固化形成。
参阅图5，第二光学功能材料层115、中间胶层13与表面层15与离型膜层14结合构成复合胶带16，中间胶层13位于表面层15与离型膜层14之间，第二光学功能材料层115位于表面层15的外表面15b，复合胶带16具体的形成方法包括以下步骤：
(1)对表面层15的胶合面15a进行化学处理；
(2)对经过化学处理的表面层的胶合面15a涂覆胶水形成中间胶层13；
(3)将离型膜层14与中间胶层13结合；
(4)将光学功能材料转移至表面层15的外表面15b。
复合胶带16具体的形成方法的步骤(1)中，对表面层15的胶合面15a进行化学处理具体包括涂覆聚氨酯涂层，使其胶合面15a表面附着力大小为 35～45dy，以增加其对胶水的附着性能。在其他实施例中，表面层15的胶合面也可以经过电晕处理，并不限于本实施例中的化学涂层处理。
步骤(2)中对经过化学处理的表面层的胶合面15a涂覆胶水，形成中间胶层13的涂覆方式为丝网印刷，在其他的实施例中也可以为有模涂覆、刮涂、点胶中的任一种。
步骤(4)中使用成型工艺，在表面层15的外表面15b形成第二光学功能材料层115。参阅图6，优选地，复合胶带16a中还可以将光学功能材料转移至侧面15c形成第三光学功能材料层116，在其他实施例中也可以使用软膜工艺在表面层15的外表面15b及侧面15c形成第二光学功能材料层115和第三光学功能材料层116，两种工艺方式均可避免因表面层15厚度过低导致的无法脱模的问题。第二光学功能材料层115和第三光学功能材料层116应当与基底层上的第一光学功能材料层113相同，以此消除画面视差。
在一些具有较强环境光的应用场景中，优选地，上述拼接结构10a中，第一光学功能材料层113、第二光学功能材料层115、第三光学功能材料层116为具有定向反射投影光线的锯齿结构，光学功能材料选用树脂，以便于成型，中间胶层13为压敏胶，表面层15为聚对苯二甲酸二醇酯，基底层11为聚对苯二甲酸二醇酯。在其他实施例中表面层15也可以为聚氯乙烯、聚丙烯、聚乙烯中的任一种，基底层11也可以为聚氯乙烯、聚丙烯、聚乙烯中的任一种，并不限于聚对苯二甲酸二醇酯。当表面层15与基底层11为相同的材料时，在环境的影响下表面层15与基底层11具有相同的收缩率，不会因为收缩率的不同造成拼接结构10a中不同的层间撕裂的情况，保证了拼接结构10a的稳定性。
上述拼接结构10a中，基底层11的厚度为100um，中间胶层13的厚度为 2um，表面层15的厚度为10um，离型膜层14的厚度为50um。离型膜层14的厚度远大于中间胶层13与表面层15的厚度，方便复合胶带16撕除离型膜层14，进而可以快速的与基底层11进行结合。
屏幕拼接结构10a可以有效的降低拼接结构表面的法线变化，当采用表面层15正面拼接的方式时，表面层15的外表面15b带有具有光学效果的结构，保证其位置同显示屏幕的色彩一致性，极大的提升了画面的观影视觉效果。屏幕拼接结构10a的形成过程步骤简单，胶层间收缩匹配，保证了屏幕拼接结构10a的稳定性。
在一些实施例中，还可以采用表面层15背面拼接的方式。请参阅图7，本发明提供一种屏幕拼接结构20，屏幕拼接结构20包括基底层21，中间胶层23，表面层25，基底层21包括第一基底211及第二基底212，第二基底212与第一基底211之间形成拼缝22。表面层25通过中间胶层23与基底层21粘接，表面层25覆盖拼缝22。
基底层21包括相互背离的正面21a和背面21b，正面21a包括光学功能材料层(未示出)，背面21b可作为屏幕的背面。
具体地，第一基底211在拼缝22端形成第一凸起213，第二基底212在拼缝22端形成第二凸起214，第一凸起213与第二凸起214凸出于背面21b。优选的，中间胶层23分为两段，分别为第一中间胶层231与第二中间胶层232，第一中间胶层231邻近第一凸起213并与第一基底211的背面21b胶接，第二中间胶层232邻接第二凸起214并与第二基底212的背面21b胶接。中间胶层23分成两段第一中间胶层231与第二中间胶层232的方式可以避免胶水从拼缝处渗透到基底层21正面，影响画面。第一凸起213与第二凸起214的高度为H1， 第一中间胶层231与第二中间胶层232的厚度为H2，其中H2＞H1。使表面层25避开基底层21的不规则形变产生的第一凸起213与第二凸起214，保证了表面层25的平整性，进而大大降低拼接结构20对应的正面21a处的法线相对未拼接平整区域的法线的变化。
由于胶水在固化过程中会放热，本实施例可避免当中间胶层23为一个整体覆盖拼缝22时，第一凸起213与第二凸起214导致胶水于不规整区域的积累放热使基底层21变形的问题。通过中间胶层23，表面层25平整地覆盖在拼缝22之上并将基底层21与表面层25有效粘接，实现屏幕拼接地目的，满足大屏观影的需求。
上述屏幕拼接结构20的形成方法可以包括以下步骤：
(1)分别选定第一基底211与第二基底212的一个侧边，将两个侧边临近以形成拼缝22；
(2)将胶水均匀涂布至第一基底211与第二基底212的背面21b，形成中间胶层23；
(3)将表面层25覆盖至中间胶层23，覆盖完成后使用辊筒将表面层25同中间胶层23间的气泡或褶皱展平，固化中间胶层23。
在其他实施例中，拼接结构20的形成方法也可以包括以下步骤：
(1)分别选定第一基底211与第二基底212的一个侧边，将两个侧边临近以形成拼缝22；
(2)将胶水均匀涂布至表面层25，形成中间胶层23；
(3)将表面层25覆盖至基底层21，覆盖完成后使用辊筒将中间胶层23同基底层21间的气泡或褶皱展平，固化中间胶层23。
两种形成方法，在步骤(2)中，将胶水均匀涂布至表面层25上形成中间胶层23的涂覆方式可以为刮涂，在其他的实施例中也可以为丝网、有模涂覆、点胶中的任一种。
在步骤(3)中覆盖完成后使用辊筒将表面层25同中间胶层23间，中间胶层23同基底层21间的气泡展平可以有效地避免空隙、起皱、变形以及以在视觉上可分辨的方式影响屏幕表面的任何因素，以达到最佳的观影效果。
在上述拼接结构20中，中间胶层23可以为压敏胶。基底层21可以为聚丙烯，表面层25可以为聚丙烯。中间胶层23的厚度为5um，基底层21的厚度为120um，表面层25的厚度为8um。
在其他实施方式中，基底层21、表面层25也可以为聚对苯二甲酸二醇酯、聚氯乙烯、聚乙烯中的任一种，中间胶层23也可以为光固或压敏型胶。基底层21的厚度可以为100～250um中的任一值，中间胶层23的厚度可以为2～3um中的任一值，表面层25的厚度可以为5～10um中的任一值。
参阅图8，在一些实施方式中，第一中间胶层231与第二中间胶层232均为双层结构，该双层结构为第一胶接层233与第二胶接层234，第一胶接层233位于基底层21与第二胶接层234之间。在其他实施例中，第一中间胶层231与第二中间胶层232也可以为3，4，5……层等多个胶接层的结构。
上述屏幕拼接结构20a的形成方法可以包括以下步骤：
(1)分别选定第一基底211与第二基底212的一个侧边，将两个侧边临近以形成拼缝22；
(2)将胶水均匀涂布至第一基底211与第二基底212的背面21b上，形成第一胶接层233，固化第一胶接层233；
(3)将胶水均匀涂布至第一胶接层233，形成第二胶接层234；
(4)将表面层25覆盖至第二胶接层234，覆盖完成后使用辊筒将表面层25同第二胶接层234间的气泡或褶皱展平，固化第二胶接层234。
其中，在步骤(4)中覆盖完成后使用辊筒将表面层25同第二胶接层234间的气泡展平可以有效地避免空隙、起皱、变形以及以在视觉上可分辨的方式影响屏幕表面的任何因素，以达到最佳的影视效果。
在其他实施例中，拼接结构20a的形成方法也可以包括以下步骤：
(1)分别选定第一基底211与第二基底212的一个侧边，将两个侧边临近以形成拼缝22；
(2)将胶水均匀涂布至表面层25，形成第二胶接层234，固化第二胶接层234；
(3)将胶水均匀涂布至第二胶接层234，形成第一胶接层233；
(4)将表面层25覆盖至基底层21，覆盖完成后使用辊筒将基底层21同第一胶接层233间的气泡或褶皱展平，固化第一胶接层233。
屏幕拼接结构20a的形成方法工艺简单，通过设置不同胶接层的涂覆顺序及将基底层21同第一胶接层233间的气泡或褶皱展平来保证表面层25的平整性及表面层与中间胶层23之间、中间胶层23与表面层25间的结合力。
优选地，在上述拼接结构20a中，第一胶接层233可以为热固胶，第二胶接层234可以为光固胶，基底层21可以为聚氯乙烯，表面层25可以为聚氯乙烯并经过电晕改性处理以增加与第二胶接层234的浸润性。在其他的实施例中，表面层25也可以增加化学涂层来提高与第二胶接层234的浸润性。如前所述，基底层21与表面层25可以为聚对苯二甲酸二醇酯、聚丙烯、聚乙烯中、聚氯 乙烯的任一种，聚氯乙烯仅作为上述拼接结构20a中基底层和表面层的一种优选实施方式。在其他实施例中，第一胶接层233也可以为光固或压敏胶，第二胶接层234也可以为压敏或热固胶。需要说明的是，当基底层21与表面层25为相同的材料时，不会因为收缩率的不同造成拼接结构20a中不同的层间撕裂的情况，保证了拼接结构20a的稳定性。
综上，在屏幕拼接的方式中，可以通过设定中间胶层23的厚度大于第一凸起213与第二凸起214的厚度使表面层25避开基底层21的不规则形变，保证了表面层25的平整性和拼接结构的稳定性，降低了拼接结构20a表面的法线变化，提高图像显示质量。
应当理解的是，在基底层21边缘的凸起朝向屏幕观影侧的情况下，由于需要避开凸起，此时该拼接结构的表面层的观影面相对于基底层21的观影面之间的厚度将更大，形成更为明显的阶梯边界，影像画面在阶梯边界处的分割线也更加明显，此时优选采用前述的消除画面分割线的方法，在表面层25侧边设置与屏幕观影表面相同的光学功能层，该光学功能层覆盖阶梯边界，且该光学功能层的宽度沿基底层14向表面层15的厚度方向递减，以在表面层15和基底层14之间形成一斜面，消除阶梯边界造成的画面分割。
请参阅图9，在一些实施例中还提供一种屏幕拼接结构30，在结构上，屏幕拼接结构30还包括连接层24，该连接层位于基底层21与表面层25之间，通过连接胶层241和中间胶层23分别与表面层25和基底层21粘接，该连接层24可进一步提高屏幕拼接结构的稳定性，当屏幕拉伸时，连接层24同时受到来自基底层21与表面层25的作用力，该作用力方向相反，因此会在一定程度上起到缓冲的作用。优选地，该连接层24用于背面拼接的方式，且连接层24与中 间胶层23的厚度之和大于基底层21切口边缘的第一凸起213与第二凸起214高度H1，以使表面层25避开基底层21的第一凸起213与第二凸起214，保证了表面层25的平整性，进而提高拼接结构30的稳定性，同时降低或避免拼接结构的拼缝22处法线变化情况。
在材料上，屏幕拼接结构30的基底层21、连接层24与表面层25优选为聚丙烯，中间胶层23与连接胶层241为热固胶，粘度为1w～10wcps，固化收缩率≤1.5％，低粘度及低的固化收缩率使中间胶层23与连接胶层241拥有极低的毛细效应，保证了热固胶不会从拼缝22处渗透到基底层的正面21a，避免对外观产生影响。在其他实施例中中间胶层23与连接胶层241也可以为光固、压敏型贴合剂中的一种。
在本实施例中，连接层24厚度为60um，表面层25的厚度为250um，在保证同收缩率的情况下拥有足够的刚度，中间胶层23与连接胶层241的厚度为10um。由于材料特性的不同，连接层24的刚度明显优于中间胶层23的刚度，连接层24的存在可以提高拼接结构30的刚度，使投影屏幕成像效果更好。
屏幕拼接结构30的形成方法包括以下步骤：
(1)分别选定第一基底211与第二基底212的一个侧边，将两个侧边临近以形成拼缝22；
(2)提供连接层，将胶水均匀涂布至连接层24形成中间胶层23；
(3)将连接层24上的中间胶层23覆盖于基底层21的背面21b，覆盖完成后使用辊筒将中间胶层23同基底层21之间的气泡或褶皱展平；
(4)固化中间胶层23，将胶水均匀涂覆至表面层25形成连接胶层241；
(5)将表面层25覆盖于连接层24，覆盖完成后使用辊筒将连接胶层241 同连接层24之间的气泡或褶皱展平，固化连接胶层241。
中间胶层23与连接胶层241的涂覆方式可以为有模涂覆法，在其他的实施例中也可以为丝网、刮涂、点胶中的任一种。在保证胶水收缩的情况下，在其他实施方式中也可以重复步骤(4)增加连接胶层241的厚度来保证屏幕拼接结构30的刚度，使投影屏幕在拼缝22处不易弯曲，成像效果更好。
本实施例提供的拼接结构30的形成方法工艺简单，通过设置不同胶层的涂覆顺序、将不同拼接层间的气泡/褶皱展平来保证表面层25的平整性及表面层25与连接胶层241之间、连接层24与中间胶层23之间的结合力，进而使拼缝处局部法线变化最小。
以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围，均应包含在本发明的保护范围之内。

Claims (13)

  1. 一种屏幕拼接结构，其特征在于，包括：
    基底层，所述基底层包括第一基底与第二基底，所述第二基底与所述第一基底拼接并在拼接处形成拼缝；
    中间胶层；
    表面层，所述表面层与所述中间胶层层叠设置，并通过所述中间胶层与所述基底层粘接，所述表面层覆盖所述拼缝，所述表面层与所述基底层的剥离强度≥1000gf/inch。
  2. 如权利要求1所述的屏幕拼接结构，其特征在于，所述基底层包括用于接收投影画面的正面和与所述正面相背离的背面，所述正面有第一光学功能材料层和光学功能材料缺省区，所述光学功能材料缺省区沿所述拼缝设置，所述中间胶层设置于所述光学功能材料缺省区。
  3. 如权利要求2所述的屏幕拼接结构，其特征在于，所述表面层包括相互背离的胶合面和外表面，所述胶合面与所述中间胶层胶合，所述外表面设有第二光学功能材料层。
  4. 如权利要求3所述的屏幕拼接结构，其特征在于，所述表面层包括连接所述胶合面和所述外表面的侧面，所述侧面设有第三光学功能材料层，所述第三光学功能材料层的宽度自所述胶合面向所述外表面的方向递减。
  5. 如权利要求1所述的屏幕拼接结构，其特征在于，所述基底层包括用于接收 投影画面的正面和与所述正面相背离的背面，所述第一基底在所述拼缝的一端包括第一凸起，所述第二基底在所述拼缝的一端包括第二凸起，所述第一凸起与所述第二凸起凸出于所述背面，所述中间胶层包括第一中间胶层与第二中间胶层，所述第一中间胶层邻近所述第一凸起并与所述第一基底的所述背面胶接，所述第二中间胶层邻近所述第二凸起并与所述第二基底的所述背面胶接，所述第一凸起与所述第二凸起的高度为H1，所述第一中间胶层与所述第二中间胶层的厚度为H2，其中H2＞H1。
  6. 如权利要求5所述的屏幕拼接结构，其特征在于，所述表面层与所述中间胶层之间进一步设有连接层与连接胶层，所述连接层位于所述中间胶层与所述连接胶层之间，所述连接胶层位于所述连接层与所述表面层之间。
  7. 如权利要求6所述的屏幕拼接结构，其特征在于，所述连接层的材料为聚对苯二甲酸二醇酯、聚氯乙烯、聚丙烯、聚乙烯中的任意一种，所述连接胶层的材料为光固、热固或压敏型贴合剂中的一种，粘度为1w～10wcps，固化收缩率≤1.5％。
  8. 如权利要求1-7任一项所述的屏幕拼接结构，其特征在于，所述基底层与所述表面层的材料为聚对苯二甲酸二醇酯、聚氯乙烯、聚丙烯、聚乙烯中的任意一种，所述中间胶层的材料为光固、热固或压敏型贴合剂中的任意一种，粘度为1w～10wcps，固化收缩率≤1.5％。
  9. 如权利要求8所述的屏幕拼接结构，其特征在于，所述基底层的厚度为 100～250um，中间胶层的厚度为5～20um，表面层的厚度为100～250um。
  10. 一种如权利要求3所述的屏幕拼接结构的形成方法，其特征在于，包括以下步骤：
    (1)分别选定所述第一基底与所述第二基底的一个侧边，将两个所述侧边临近以形成所述拼缝；
    (2)去除距离所述侧边预设宽度范围内的光学功能材料层，形成所述光学功能材料缺省区；
    (3)提供复合胶带，所述复合胶带包括层叠设置的第二光学功能材料层、所述表面层、所述中间胶层和离型膜层；
    (4)将所述离型膜层去除，将所述复合胶带余下部分贴附于所述拼缝，覆盖完成后使用辊筒将所述中间胶层同所述基底层间气泡或褶皱展平，固化所述中间胶层。
  11. 如权利要求10所述的屏幕拼接结构的形成方法，其特征在于，所述复合胶带的制作包括以下步骤：
    (1)对所述表面层的所述胶合面进行化学处理；
    (2)对经过化学处理的所述胶合面涂覆胶水，形成所述中间胶层，所述胶水为光固、热固或压敏型贴合剂中的一种；
    (3)将所述离型膜层与所述中间胶层结合；
    (4)将光学功能材料转移至所述表面层的外表面。
  12. 一种如权利要求5所述的屏幕拼接结构的形成方法，其特征在于，包括以下步骤：
    (1)分别选定所述第一基底与所述第二基底的一个侧边，将两个所述侧边临近以形成所述拼缝；
    (2)将胶水均匀涂布至所述背面或所述表面层形成所述中间胶层，所述胶水为光固、热固或压敏型贴合剂中的一种；
    (3)将所述表面层覆盖至所述中间胶层，覆盖完成后使用辊筒将所述表面层同所述中间胶层间的气泡或褶皱展平，固化所述中间胶层。
  13. 一种如权利要求6所述的屏幕拼接结构的形成方法，其特征在于，包括以下步骤：
    (1)分别选定所述第一基底与所述第二基底的一个侧边，将两个所述侧边临近以形成所述拼缝；
    (2)提供所述连接层，将胶水均匀涂布至所述连接层形成所述中间胶层，所述胶水为光固、热固或压敏型贴合剂中的一种；
    (3)将所述连接层上的所述中间胶层覆盖于所述基底层的所述背面，覆盖完成后使用辊筒将所述中间胶层同所述基底层之间的气泡或褶皱展平；
    (4)固化所述中间胶层，将胶水均匀涂覆至所述表面层形成所述连接胶层，所述胶水为光固、热固或压敏型贴合剂中的一种；
    (5)将所述表面层覆盖于所述连接层，覆盖完成后使用辊筒将所述连接胶层同所述连接层之间的气泡或褶皱展平，固化所述连接胶层。
PCT/CN2019/119156 2018-12-06 2019-11-18 一种屏幕拼接结构及其形成方法 Ceased WO2020114227A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/299,758 US11905442B2 (en) 2018-12-06 2019-11-18 Screen splicing structure and method for forming screen splicing structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811492400.3 2018-12-06
CN201811492400.3A CN111286280B (zh) 2018-12-06 2018-12-06 一种屏幕拼接结构及其形成方法

Publications (1)

Publication Number Publication Date
WO2020114227A1 true WO2020114227A1 (zh) 2020-06-11

Family

ID=70975142

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/119156 Ceased WO2020114227A1 (zh) 2018-12-06 2019-11-18 一种屏幕拼接结构及其形成方法

Country Status (3)

Country Link
US (1) US11905442B2 (zh)
CN (1) CN111286280B (zh)
WO (1) WO2020114227A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111653206A (zh) * 2020-07-17 2020-09-11 上海天马微电子有限公司 可拉伸显示面板和显示装置
CN111768716A (zh) * 2020-07-02 2020-10-13 Tcl华星光电技术有限公司 拼接显示屏
CN113112925A (zh) * 2021-04-16 2021-07-13 深圳市华星光电半导体显示技术有限公司 拼接显示屏及其制作方法

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111286280B (zh) * 2018-12-06 2022-06-03 深圳光峰科技股份有限公司 一种屏幕拼接结构及其形成方法
CN111500180B (zh) * 2019-01-30 2022-08-16 深圳光峰科技股份有限公司 投影屏幕光学涂料
CN113238447A (zh) * 2020-07-06 2021-08-10 深圳市慧创立科技有限公司 一种巨型接合屏幕
CN112578626B (zh) * 2020-12-22 2025-07-04 苏州政道光电材料有限公司 一种高保偏光学膜及投影银幕
CN214067571U (zh) * 2021-01-05 2021-08-27 深圳市时代华影科技股份有限公司 一种拼接式投影银幕
CN115469506A (zh) * 2021-06-10 2022-12-13 深圳市时代华影科技股份有限公司 一种拼接式投影银幕
CN114035401B (zh) * 2021-07-07 2023-09-22 深圳市慧创立科技有限公司 一种屏幕拼接结构及拼接屏幕
CN114002904A (zh) * 2021-10-21 2022-02-01 深圳市慧创立科技有限公司 一种屏幕破损修补方法
CN114002905A (zh) * 2021-10-21 2022-02-01 深圳市慧创立科技有限公司 一种屏幕修补方法
CN116165836A (zh) * 2021-11-24 2023-05-26 瑞尔D股份有限公司 银幕修补片及银幕瑕疵修补方法
CN114373396B (zh) * 2022-02-10 2023-10-17 惠州华星光电显示有限公司 拼接显示面板及拼接显示装置
CN114973980B (zh) * 2022-05-24 2023-09-05 Tcl华星光电技术有限公司 显示面板
CN114999333B (zh) * 2022-06-02 2023-10-31 武汉华星光电半导体显示技术有限公司 拼接显示面板
CN115273678A (zh) * 2022-07-29 2022-11-01 武汉天马微电子有限公司 一种显示面板及显示装置
US20240255840A1 (en) * 2023-01-31 2024-08-01 Yamaha Corporation Screen unit, method for assembling screen unit, and method for disassembling screen unit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010105395A1 (zh) * 2009-03-20 2010-09-23 Xia Zhanmin 消除显示屏拼接框的装置
CN102207567A (zh) * 2011-02-18 2011-10-05 广东威创视讯科技股份有限公司 消缝装置及无缝拼接显示装置
CN103440830A (zh) * 2013-08-30 2013-12-11 京东方科技集团股份有限公司 一种显示屏、拼接显示屏及显示装置
CN104851373A (zh) * 2015-06-12 2015-08-19 京东方科技集团股份有限公司 拼接屏及其显示方法
CN108230913A (zh) * 2018-01-29 2018-06-29 惠州市华星光电技术有限公司 一种拼接屏
CN108346381A (zh) * 2018-04-04 2018-07-31 深圳市秀狐科技有限公司 一种led显示屏及其封装方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW238362B (zh) * 1993-01-28 1995-01-11 Hughes Training Inc
JP4704737B2 (ja) * 2004-11-05 2011-06-22 直史 山内 スクリーン及びこれを有する画像投影システム、スクリーンの製造方法
JP2007094069A (ja) * 2005-09-29 2007-04-12 Toppan Printing Co Ltd 透過型プロジェクションスクリーン
CN201876660U (zh) * 2010-09-30 2011-06-22 上海广电光显技术有限公司 无边缘图像遮挡投影拼接屏幕
CN201817660U (zh) 2010-10-14 2011-05-04 岳西县长宁织绸有限责任公司 丝织机丝线断尾自停装置
WO2013010141A2 (en) * 2011-07-13 2013-01-17 Reald Inc. Method and apparatus for joining screen material for minimal optical distortion
CN203324639U (zh) * 2013-06-17 2013-12-04 杭州曼加科技有限公司 多媒体信息显示投影屏幕
CN107807489A (zh) * 2017-11-10 2018-03-16 威创集团股份有限公司 一种背投拼接墙及其背投屏幕
CN108388074A (zh) * 2018-03-19 2018-08-10 青岛海信激光显示股份有限公司 投影屏幕及投影系统
CN108461528B (zh) * 2018-03-23 2020-10-23 武汉华星光电技术有限公司 Oled拼接显示器及其拼接方法
CN111286280B (zh) * 2018-12-06 2022-06-03 深圳光峰科技股份有限公司 一种屏幕拼接结构及其形成方法
WO2021085933A1 (ko) * 2019-10-31 2021-05-06 주식회사 엘지화학 편광판 적층체 및 이의 제조방법
CN111768716B (zh) * 2020-07-02 2022-05-27 Tcl华星光电技术有限公司 拼接显示屏
CN112578626B (zh) * 2020-12-22 2025-07-04 苏州政道光电材料有限公司 一种高保偏光学膜及投影银幕
CN214067571U (zh) * 2021-01-05 2021-08-27 深圳市时代华影科技股份有限公司 一种拼接式投影银幕
CN113112925B (zh) * 2021-04-16 2022-04-26 深圳市华星光电半导体显示技术有限公司 拼接显示屏及其制作方法
CN114035401B (zh) * 2021-07-07 2023-09-22 深圳市慧创立科技有限公司 一种屏幕拼接结构及拼接屏幕

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010105395A1 (zh) * 2009-03-20 2010-09-23 Xia Zhanmin 消除显示屏拼接框的装置
CN102207567A (zh) * 2011-02-18 2011-10-05 广东威创视讯科技股份有限公司 消缝装置及无缝拼接显示装置
CN103440830A (zh) * 2013-08-30 2013-12-11 京东方科技集团股份有限公司 一种显示屏、拼接显示屏及显示装置
CN104851373A (zh) * 2015-06-12 2015-08-19 京东方科技集团股份有限公司 拼接屏及其显示方法
CN108230913A (zh) * 2018-01-29 2018-06-29 惠州市华星光电技术有限公司 一种拼接屏
CN108346381A (zh) * 2018-04-04 2018-07-31 深圳市秀狐科技有限公司 一种led显示屏及其封装方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111768716A (zh) * 2020-07-02 2020-10-13 Tcl华星光电技术有限公司 拼接显示屏
CN111653206A (zh) * 2020-07-17 2020-09-11 上海天马微电子有限公司 可拉伸显示面板和显示装置
CN111653206B (zh) * 2020-07-17 2022-02-08 上海天马微电子有限公司 可拉伸显示面板和显示装置
CN113112925A (zh) * 2021-04-16 2021-07-13 深圳市华星光电半导体显示技术有限公司 拼接显示屏及其制作方法

Also Published As

Publication number Publication date
CN111286280B (zh) 2022-06-03
US20220017786A1 (en) 2022-01-20
CN111286280A (zh) 2020-06-16
US11905442B2 (en) 2024-02-20

Similar Documents

Publication Publication Date Title
WO2020114227A1 (zh) 一种屏幕拼接结构及其形成方法
US20220212447A1 (en) Cover plate, display device and method for preparing cover plate
US9823561B2 (en) Method and apparatus for joining screen material for minimal optical distortion
CN109215511A (zh) 一种柔性显示面板的制备方法、柔性显示面板及显示装置
JP2015021975A (ja) 光学フィルム用転写体、光学フィルム用転写体の製造方法
CN113439295B (zh) 显示模组及其制作方法、显示装置
JP2017090578A (ja) 額縁状の封し部を有する積層光学フィルムシート
WO2020042168A1 (zh) 柔性保护膜、曲面显示屏及终端
JP6076523B1 (ja) 積層光学フィルムの製造方法
JP2013011699A (ja) ディスプレイ装置用保護板及びその製造方法
US11980000B2 (en) Back film for display device and display device
JP6380566B2 (ja) 光学フィルム、光学フィルム用転写体、画像表示装置
JP4123745B2 (ja) 積層フィルムの製造方法
US20120002288A1 (en) Multi-layer panel and method of manufacturing such a panel
JP2017083795A (ja) Ｌｅｄ光源エッジライト方式表示装置および積層光学フィルムシートの作製方法
CN102501498B (zh) 板材堆栈结构及板材堆栈结构制作方法
KR101736682B1 (ko) 디스플레이용 우레탄 리플렉스시트 및 그 제조방법
JP2640081B2 (ja) 偏光板付反射体並びに反射体
WO2020258648A1 (zh) 一种透明导电膜及其制作方法
JP7719727B2 (ja) 偏光板積層体及びその製造方法
JP2017083896A (ja) 光学フィルム、光学フィルム用転写体、画像表示装置及び光学フィルムの製造用金型
CN115542440B (zh) 一种双层复合匀光膜及其制造系统以及制造方法
CN119400082A (zh) 显示模组、显示装置及显示模组的制备方法
WO2023178561A1 (zh) 显示模组及其制备方法、显示装置
CN115407438A (zh) 一种单层匀光膜及其制造系统以及制造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19893176

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19893176

Country of ref document: EP

Kind code of ref document: A1