CN110722820B - Laminating roller, laminating jig and laminating method of flexible screen and bent cover plate - Google Patents
Laminating roller, laminating jig and laminating method of flexible screen and bent cover plate Download PDFInfo
- Publication number
- CN110722820B CN110722820B CN201910994964.5A CN201910994964A CN110722820B CN 110722820 B CN110722820 B CN 110722820B CN 201910994964 A CN201910994964 A CN 201910994964A CN 110722820 B CN110722820 B CN 110722820B
- Authority
- CN
- China
- Prior art keywords
- roller
- flexible screen
- cover plate
- attaching
- laminating
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
- B30B3/005—Roll constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
Abstract
The embodiment of the application provides a laminating roller, a laminating jig and a laminating method of a flexible screen and a bent cover plate. This laminating roller includes: a roller and an attaching member; the attaching piece is made of elastic materials and is provided with a first bottom surface, a second bottom surface and a peripheral surface; the second bottom surface is attached to the surface of the roller; the first bottom surface comprises a main binding surface and an end binding surface; the main binding surface is parallel to the second bottom surface and is used for being matched with the bottom surface main body of the bent cover plate; the end binding surface is used for matching with the bottom surface end angle of the bent cover plate; the end binding surface is raised from the main binding surface; the circumferential surface is connected with the first bottom surface and the second bottom surface; the circumferential surface is used for matching with the bending surface of the bending cover plate. The embodiment of the application adopts roll-in type fitting, optimizes the local fitting sequence of the flexible screen, and improves the stress condition of the flexible screen, thereby realizing the sufficient fitting of the flexible screen and the bent cover plate.
Description
Technical Field
The application relates to the technical field of laminating of flexible screens, in particular to a laminating roller, a laminating jig and a laminating method of a flexible screen and a bent cover plate.
Background
With the rapid development of display technologies, various types of display products are gradually emerging in people's lives. The curved surface display product has the advantages of better sense organ experience due to the curved surface screen, more comfortable wearing experience or better three-dimensional display effect due to the strong bending plasticity of the flexible curved surface screen, and the like, and is favored by more and more consumers.
The curved screen comprises a curved cover plate and a flexible screen which are attached to each other. As shown in fig. 1 and 2, the curved cover plate includes a bottom surface main body having a relatively small curvature, and a bottom surface end portion or end corner having a relatively large curvature. The flexible screen and the bottom surface main body of the bent cover plate correspond to each other and are main body parts, and the bending degree is small; the flexible screen is bent end parts or bent end angles corresponding to the bottom end parts or the end angles of the bent cover plate, and the bending degree is large.
The conventional curved screen production method generally includes, as shown in fig. 3, respectively limiting a flexible screen and a curved cover plate on two molds, and fitting the flexible screen and the curved cover plate by closing the two molds to obtain the curved screen. In the process of attaching the flexible screen to the curved cover plate, as shown in fig. 4, the bending end portion or the bending end corner of the flexible screen is very complicated in deformation, and the bottom end portion or the end corner of the bent cover plate is likely to have undesirable phenomena such as bubbles, and even the flexible screen is broken. And along with the increase of curved surface screen plane quantity of buckling, the bending end portion of flexible screen or the deformation of buckling the extreme angle department will be more complicated for the laminating of flexible screen and crooked apron is more difficult.
Disclosure of Invention
The application aims at the defects of the existing mode, provides the attaching roller, the attaching jig and the attaching method of the flexible screen and the bent cover plate, and is used for solving the technical problem that the flexible screen and the bent cover plate are difficult to attach in the prior art.
In a first aspect, embodiments of the present application provide a laminating roller, including: a roller and an attaching member;
the attaching piece is made of elastic materials and is provided with a first bottom surface, a second bottom surface and a peripheral surface;
the second bottom surface is attached to the surface of the roller;
the first bottom surface comprises a main binding surface and an end binding surface; the main binding surface is parallel to the second bottom surface and is used for being matched with the bottom surface main body of the bent cover plate; the end binding surface is raised from the main binding surface;
the circumferential surface is connected with the first bottom surface and the second bottom surface; the circumferential surface is used for matching with the bending surface of the bending cover plate.
In a second aspect, an embodiment of the present application provides a bonding jig, including: a base, and a laminating roller as provided in the first aspect above;
the base is used for limiting the bent cover plate;
the laminating roller is used for laminating the flexible screen and the bent cover plate.
In a third aspect, an embodiment of the present application provides a method for attaching a flexible screen to a curved cover plate, including:
limiting the bent cover plate on the base in the attaching jig provided by the second aspect;
limiting the flexible screen at the laminating piece of the laminating roller in the laminating jig provided by the second aspect;
aligning a flexible screen on an attaching piece of an attaching roller with a bent cover plate on a base;
one end of the flexible screen is attached to the corresponding end of the bent cover plate, and the attaching roller is driven to roll the flexible screen and the other end of the bent cover plate along the base; in the rolling process, the end binding face on the binding piece of the binding roller tightly presses the corresponding part of the flexible screen and the bottom end corner of the bent cover plate.
In a fourth aspect, an embodiment of the present application provides a method for manufacturing a bonding roller, including:
a vacuum cavity, a vacuum channel communicated with the vacuum cavity and a circuit channel are reserved in the roller;
preparing an inner cavity of an initial mold for manufacturing an attaching piece according to the surface of the inner cavity of the bent cover plate, and processing the inner cavity of the initial mold according to the curvature radius of the attaching piece to be prepared to obtain a mold;
injecting the elastic material in a molten state into a mold, and cooling and molding to obtain a fitting piece;
the attaching piece is in interference fit with the surface of the roller; or, the attaching piece is adhered to the surface of the roller.
The technical scheme provided by the embodiment of the application has the following beneficial technical effects:
1. the roller type laminating structure of the roller is adopted to realize the roller type laminating of the flexible screen and the bent cover plate, the flexible screen and the bent cover plate are in line contact during laminating, and the direction quantity of stress applied to the bent end angle of the flexible screen at the same moment can be reduced, so that the stress condition of the flexible screen can be obviously improved, and the risk of fragmentation is reduced; with the advance of the roller, air between the flexible screen and the bent cover plate can be well extruded out, and attaching bubbles are remarkably reduced;
2. the attaching piece is made of an elastic material, and provides flexible attaching force for attaching the flexible screen and the bent cover plate, so that the flexible screen can be protected while attaching is more sufficient;
3. the end binding face on the first bottom surface of binding piece is more protruding than main binding face, can take the lead to the bending end angle of flexible screen and the corresponding bottom surface end angle of crooked apron closely laminate at the laminating in-process, on this basis, the main binding face of binding piece rethread first bottom surface is progressively laminated with the main part of flexible screen and the bottom surface main part of crooked apron, the local laminating order of flexible screen has been optimized, the direction quantity of the stress that the angle department of buckling of flexible screen received has further been reduced, the deformation of the angle department of buckling of flexible screen has been simplified, thereby can realize the abundant laminating of flexible screen and crooked apron, the yields of curved surface screen has been improved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a curved cover plate in the prior art;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a schematic structural view of two bonding molds using a folding method in the prior art;
FIG. 4 is a schematic view showing a bonding state using the bonding mold shown in FIG. 3;
FIG. 5 is a schematic structural diagram of a laminating roller according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an attaching member of an attaching roller according to an embodiment of the present disclosure;
FIG. 7 is an enlarged view of FIG. 6 at B;
fig. 8 is a schematic side view of an engaging member of an engaging roller according to an embodiment of the present disclosure;
fig. 9 is a schematic view of an expanded structure of an attaching member of an attaching roller according to an embodiment of the present application;
fig. 10 is a schematic structural view of a bonding jig according to an embodiment of the present disclosure;
fig. 11 is a schematic flowchart illustrating a method for attaching a flexible screen to a curved cover plate according to an embodiment of the present disclosure;
fig. 12 is a schematic flow chart illustrating a process of limiting a flexible screen to an attachment member of an attachment roller in an attachment jig in a method for attaching a flexible screen to a curved cover plate according to an embodiment of the present application;
in the figure, the position of the upper end of the main shaft,
100-curved cover plates; 100 a-cover bottom surface; 100a 1-bottom body; 100a 2-bottom face end corner; 100 b-curved surface;
200-a flexible screen;
300-upper mold; 400-lower mold;
500-laminating roller;
510-a roller; 510 a-a vacuum chamber;
520-an abutment;
520 a-a first bottom surface; 520a 1-primary abutment surface; 520a 2-end abutment surface; 520 b-a second bottom surface; 520 c-a peripheral surface;
521-adsorption holes; 522-heating element; 522 a-annular heating tube; 522 b-strip heating tube;
600-a base;
700-bubbles.
Detailed Description
Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, and/or components, but do not preclude the presence or addition of one or more other features, steps, components, and/or groups thereof. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
The inventors of the present application have conducted research to find that, as the number of the curved surfaces 100b of the curved screen increases, the deformation of the bent end portion or the bent end corner of the flexible screen 200 becomes more complicated, so that the attachment of the flexible screen 200 to the curved cover plate 100 becomes more difficult. Taking the four-sided bent cover 100 as an example, as shown in fig. 1, four sides of the bent cover 100 all have bent surfaces 100b in a bent form, and a complex intersection region, i.e., an end portion or an end corner of the cover bottom surface 100a of the bent cover 100, is formed at an intersection of the bent surfaces 100b and the cover bottom surface 100a of the bent cover 100, as shown in fig. 2, the area where the flexible screen 200 is most difficult to attach is prone to have defects such as Crack (Crack) and bubbles 700. In the conventional attaching method using two molds to be combined, as shown in fig. 3, the flexible screen 200 moves to the upper mold 300 along with the lower mold 400 and is in surface contact with the curved cover plate 100, and in the attaching process, the bending end angles of the flexible screen 200 are simultaneously stressed by the bottom end angle 100a2 of the curved cover plate and the curved surface 100b, so that the stress is complex, and the deformation of the bending end angles of the flexible screen 200 is uncontrollable. Further, the deformation of the mold may cause the flexible panel 200 to be attached to the edge curved surface 100b of the curved cover 100 first, but the main body portion of the flexible panel 200 is not yet attached to the bottom main body 100a1 of the curved cover 100, which may result in a serious attachment of the bubble 700, as shown in fig. 4. Therefore, the number of curved surfaces 100b of the curved screen is increased, and the existing attaching method cannot meet the attaching requirement.
The application provides a laminating roller, laminating tool and flexible screen and curved cover plate's laminating method, aims at solving prior art technical problem as above.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.
The embodiment of the present application provides a laminating roller 500, and a schematic structural diagram of the laminating roller 500 is shown in fig. 5 to 8, and includes: the method comprises the following steps: a roller 510 and an attachment member 520;
the fitting member 520 is made of an elastic material, and the fitting member 520 has a first bottom surface 520a, a second bottom surface 520b, and a peripheral surface 520 c;
the second bottom surface 520b is attached to the surface of the roller 510;
the first bottom surface 520a includes a main abutment surface 520a1 and an end abutment surface 520a 2; the main abutting surface 520a1 is parallel to the second bottom surface 520b and is used for matching with the bottom main body 100a1 of the bent cover plate 100; the end abutting surface 520a2 is used for matching with the bottom end corner 100a2 of the bent cover plate 100; the end abutment surface is raised from the main abutment surface 520a 1;
the peripheral surface 520c connects the first bottom surface 520a and the second bottom surface 520 b; the circumferential surface 520c is adapted to cooperate with the curved surface 100b of the curved cover plate 100.
In this embodiment, a roller-type attaching structure of the roller 510 is adopted to achieve the roller attaching of the flexible screen 200 and the curved cover plate 100, and the flexible screen 200 and the curved cover plate 100 are in line contact during attaching, so that the number of directions of stresses applied to the bending end corner of the flexible screen 200 at the same time can be reduced, for example, when the bottom end corner 100a2 of the curved cover plate 100 and the transition region of the curved surface 100b are attached, the flexible screen 200 only bears the stress of the bottom end corner 100a2 or the stress of a single curved surface 100b, but not the stresses of a plurality of curved surfaces 100b and the bottom end corner 100a2 at the same time, so that the stress condition of the flexible screen 200 can be significantly improved, and the risk of cracking can be reduced; and along with the advance of roller 510, can be fine push out the air between flexible screen 200 and the crooked apron 100, showing the reduction and laminating the bubble.
The adhesive member 520 is made of an elastic material, for example, a main body material with a certain hardness, such as silicone rubber, PVC (Polyvinyl chloride), TPF (tetrafluoroethylene-ethylene copolymer), etc., and an auxiliary material with a high thermal conductivity coefficient are mixed. And a flexible attaching force is provided for attaching the flexible screen 200 to the curved cover plate 100, so that the flexible screen 200 can be protected while attaching is more sufficient.
The end attaching surface 520a2 on the first bottom surface 520a of the attaching member 520 is more convex than the main attaching surface 520a1, specifically, more convex in the direction away from the second bottom surface 520b, and the bending end angle of the flexible screen 200 can be firstly and closely attached to the corresponding bottom surface end angle 100a2 of the curved cover plate 100 in the attaching process, on this basis, the attaching member 520 then attaches the main body portion of the flexible screen 200 to the bottom surface main body 100a1 of the curved cover plate 100 step by step through the main attaching surface 520a1 of the first bottom surface 520a, so that the local attaching sequence of the flexible screen 200 is optimized, the direction quantity of stress applied to the bending end angle of the flexible screen 200 is further reduced, the deformation of the bending end angle of the flexible screen 200 is simplified, the flexible screen 200 and the curved cover plate 100 can be fully attached, and the yield of the curved screen is improved.
Alternatively, the attaching member 520 can be attached to the surface of the roller 510 through the second bottom surface 520b along the circumferential direction of the roller 510; alternatively, the attaching member 520 is attached to the surface of the roller 510 through the second bottom surface 520b along a direction forming an included angle with the axial direction of the roller 510, so as to meet the requirement of a specific attachment, such as the attachment requirement of a special-shaped curved screen, or the installation angle of a special-shaped attaching roller 500 and the base 600 for fixing the curved cover plate 100.
Optionally, the surface of the roller 510 may be provided with a groove matched with the attaching member 520, for partially fitting and installing the attaching member 520, and further, the attaching member may be installed by interference fit; alternatively, the adhesive member 520 can be attached to the surface of the roller 510 by using an adhesive.
The inventor of the present application considers that the end abutment surface 520a2 on the first bottom surface 520a of the abutment member 520 is more convex than the main abutment surface 520a 1. For this reason, the present application provides one possible implementation manner for the first bottom surface 520a of the attachment member 520:
as shown in FIG. 8, the height of the end abutting surface 520a2 protruding from the main abutting surface 520a1 of the embodiment of the present application is H, 100 μm H150 μm (micrometer);
the end abutment surface 520a2 is a sector with a radius of 3mm (millimeters).
In this embodiment, the height of the end abutting surface 520a2 on the first bottom surface 520a of the abutting member 520 is increased by 100 μm to 150 μm (micrometers), for example, 120 μm, relative to the main abutting surface 520a1, so that the corresponding bent end corner of the flexible screen 200 and the corresponding bottom end corner 100a2 of the curved cover plate 100 in this area maintain sufficient abutting pressure to ensure that no air bubbles are abutted between the corresponding bent end corner of the flexible screen 200 and the corresponding bottom end corner 100a2 of the curved cover plate 100. The end abutting surface 520a2 on the first bottom surface 520a of the abutting member 520 is a sector with a radius of 3mm to adapt to the curvature change area at the bottom end corner 100a2 of the curved cover plate 100, and provide sufficient abutting support for the corresponding bending end corner of the flexible screen 200.
The inventor of the present application considers that the first bottom surface 520a of the engaging member 520 is engaged with the bottom surface 100a of the curved cover 100, and the peripheral surface 520c of the engaging member 520 is also engaged with the curved surface 100b of the curved cover 100. For this reason, the present application provides one possible implementation manner for the fitting 520:
the first bottom surface 520a of the embodiment of the present application is recessed by 0.4mm to 0.7mm (mm), for example, 0.5mm, in its contour as compared with the contour of the cover bottom surface 100a of the curved cover 100;
the circumferential surface 520c is an arc surface matching with the curved surface 100b of the curved cover plate 100, and the arc radius of the circumferential surface 520c is R1Bend ofThe curved surface 100b of the curved cover plate 100 has a circular arc radius R2，R2-R1＝0.7mm。
By adopting the matching mode provided by the embodiment, a certain matching gap can exist between the fitting piece 520 and the curved cover plate 100, and the matching gap can just accommodate the flexible screen 200 fitted with the curved cover plate 100, and the flexible screen 200 can be bent in a specified size and can be sufficiently fitted with the curved cover plate 100.
The inventor of the application considers that the flexible screen 200 is limited on the die by adopting a carrier film adsorption mode in the existing attaching method, because of the existence of the carrier film, the flexible screen 200 is incompletely deformed before attaching and cannot be well matched with the inner cavity of the cover plate, the flexible screen 200 is greatly deformed during attaching, the fragmentation probability is increased, particularly, the bottom end angle 100a2 of the bent cover plate 100 with complex stress is difficult to fully attach the flexible screen 200 and the bent cover plate 100, and the attaching yield is reduced. To this end, the present application provides one possible implementation of the following for the laminating roller 500:
as shown in FIG. 5, the roll 510 of the embodiment of the present application has a vacuum chamber 510a, and the vacuum chamber 510a is used for connecting a vacuum device; the roller 510 further has a vacuum channel (not shown), one end of the vacuum channel is open to communicate with the vacuum chamber 510a, and the other end is open to be disposed at the surface of the roller 510 corresponding to the second bottom surface 520b of the fitting 520;
as shown in fig. 6 and 7, the attachment member 520 has a plurality of suction holes 521, one end of each suction hole 521 is open to communicate with the vacuum channel of the roller 510, and the other end is open to be disposed at the main attachment surface 520a1 or the end attachment surface 520a2 of the first bottom surface 520 a; the diameter of the adsorption hole 521 is 0.5mm to 1 mm.
In this embodiment, the suction hole 521 of the adhesive member 520 is connected to an external vacuum device through the vacuum chamber 510a in the roller 510, thereby forming a vacuum suction system. The adsorption hole 521 can closely adsorb the flexible screen 200 on the first bottom surface 520a of the attaching member 520, so that the attaching process is guaranteed, the flexible screen 200 is always located at a correct alignment position, and the attaching precision is improved. Through the absorption of the absorption holes 521, the flexible screen 200 can be deformed in advance to a certain extent, the surface shape of the flexible screen 200 is close to the shape of the inner cavity of the bent cover plate 100, the attaching degree of the flexible screen 200 and the bent cover plate 100 during attaching is improved, the risk of fragmentation is reduced, and the yield is improved. The diameter of the adsorption hole 521 is selected to be 0.5-1 mm, for example, 1mm, which can provide necessary vacuum adsorption force and avoid damage to the flexible screen 200 due to too large hole diameter.
The inventor of the present application considers that the adsorption hole 521 on the attachment member 520 needs to closely adsorb the flexible screen 200 on the first bottom surface 520a of the attachment member 520, so as to ensure that the flexible screen 200 is always in the correct alignment position during the attachment process. For this reason, the present application provides one possible implementation manner for the suction hole 521 at the main attachment surface 520a1 of the first bottom surface 520 a:
as shown in fig. 9, in the embodiment of the present application, the openings of the suction holes 521 located on the main attachment surface 520a1 of the first bottom surface 520a have a distance d in the longitudinal direction of the main attachment surface 520a11The distance d in the width direction of the main contact surface 520a12，d1:d2＝5:4；
Or, d1Is 25mm, d2Is 20 mm.
By adopting the layout mode of the adsorption holes 521 at the main attachment surface 520a1 of the first bottom surface 520a provided by the embodiment, the flexible screen 200 can be closely adsorbed on the first bottom surface 520a of the attachment member 520, so that the flexible screen 200 is always in a correct alignment position in the attachment process, and the manufacturing cost of the attachment member 520 can be controlled.
The inventor of the present application considers that the flexible screen 200 may be pre-deformed to a certain extent due to the adsorption of the adsorption holes 521 on the flexible screen 200, and the surface shape of the flexible screen 200 is close to the inner cavity shape of the curved cover plate 100, so as to improve the adhesion degree between the flexible screen 200 and the curved cover plate 100 during adhesion. For this reason, the present application provides one possible implementation manner for the suction at the end abutting surface 520a2 of the first bottom surface 520a as follows:
as shown in fig. 7, in the embodiment of the present application, at least 3 openings of the suction holes 521 are located at the end abutting surface 520a2 of the first bottom surface 520a and are distributed near the vertex of the end abutting surface 520a 2.
Since the bending end angle of the flexible screen 200 is most complicated to deform and the difficulty in attaching the flexible screen to the curved cover plate 100 is the greatest, in the solution provided by this embodiment, the number of openings of the suction holes 521 at the end attachment surface 520a2 of the first bottom surface 520a is designed to be strengthened, so as to ensure that the bending end angle of the flexible screen 200 can be closely attached to the end attachment surface 520a2 of the first bottom surface 520a of the attachment member 520.
Alternatively, when the openings of the suction holes 521 are 3 or more, at least 3 of them are arranged at the positions of three vertices of a triangle to enhance the suction effect of the suction holes 521 on the flexible screen 200.
The inventor of the present application considers that the flexible screen 200 is pre-deformed only by cold deformation methods such as vacuum adsorption, and the deformation effect has certain limitation. To this end, the present application provides one possible implementation of the following for the laminating roller 500:
as shown in fig. 9, the application roller 500 of the embodiment of the present application further includes a heating member 522, and the heating member 522 includes an annular heating pipe 522a and a plurality of bar-shaped heating pipes 522 b;
the fitting member 520 is provided with an annular accommodating cavity (not shown in the figure) and a plurality of strip-shaped accommodating cavities (not shown in the figure), the annular accommodating cavity is arranged along the edge of the fitting member 520, and the strip-shaped accommodating cavities are arranged in an area surrounded by the annular accommodating cavities at intervals; adsorption holes 521 are arranged between two adjacent strip-shaped containing cavities and/or between the annular containing cavity and the adjacent strip-shaped containing cavity;
the annular heating pipe 522a is arranged in the annular accommodating cavity, and the plurality of strip-shaped heating pipes 522b are arranged in the plurality of strip-shaped accommodating cavities in a one-to-one correspondence manner.
In this embodiment, the heating element 522 is additionally arranged in the fitting member 520 of the fitting roller 500, so that the flexible screen 200 can be heated, and the heating element and the adsorption deformation of the adsorption hole 521 act together to realize the thermal deformation of the flexible screen 200, so that the pre-deformation effect is more natural and sufficient, and the full fitting between the flexible screen 200 and the bent cover plate 100 is facilitated. In addition, the heating element 522 adopts the layout provided by the embodiment, can provide uniform heat supply for the flexible screen 200, fully matches the adsorption function of the adsorption hole 521, and can also fully utilize the space of the attaching element 520 without affecting the normal work of the adsorption hole 521. The annular heating tube 522a also ensures that the bent end corners of the flexible screen 200 are sufficiently softened by heat.
Alternatively, the heating member 522 may be a tubular electric infrared heating element, and the electric infrared heating has the advantages of simple structure, low equipment cost and easy maintenance; the infrared ray has stronger penetrating power, is easy to be absorbed by an object, and is immediately converted into heat energy once being absorbed by the object; the energy loss before and after infrared heating is small, the temperature is easy to control, and the heating quality is high.
Based on the same inventive concept, the embodiment of the present application provides a bonding jig, a schematic structural diagram of which is shown in fig. 10, the bonding jig includes: a base 600, and any of the application rollers 500 provided in the above embodiments;
the base 600 serves to restrain the bent cover plate 100;
the attaching roller 500 is used to attach the flexible screen 200 to the curved cover plate 100.
The working principle and the beneficial effects of the attaching jig provided in this embodiment refer to the attaching roller 500 described in detail above, and are not described herein again.
Based on the same inventive concept, a flow schematic diagram of the method for attaching the flexible screen to the curved cover plate is shown in fig. 11, and the method includes the steps of:
s701: limiting the bent cover plate on the base in the attaching jig provided by the above embodiment;
s702: the flexible screen is limited at the laminating piece of the laminating roller in the laminating jig provided by the embodiment;
s703: aligning a flexible screen on an attaching piece of an attaching roller with a bent cover plate on a base;
s704: one end of the flexible screen is attached to the corresponding end of the bent cover plate, and the attaching roller is driven to roll the flexible screen and the other end of the bent cover plate along the base; in the rolling process, the end binding face on the binding piece of the binding roller tightly presses the corresponding part of the flexible screen and the bottom end corner of the bent cover plate.
In this embodiment, a roller-type attaching structure of the roller 510 is adopted to achieve the roller attaching of the flexible screen 200 and the curved cover plate 100, and the flexible screen 200 and the curved cover plate 100 are in line contact during attaching, so that the number of directions of stresses applied to the bending end corner of the flexible screen 200 at the same time can be reduced, for example, when the bottom end corner 100a2 of the curved cover plate 100 and the transition region of the curved surface 100b are attached, the flexible screen 200 only bears the stress of the bottom end corner 100a2 or the stress of a single curved surface 100b, but not the stresses of a plurality of curved surfaces 100b and the bottom end corner 100a2 at the same time, so that the stress condition of the flexible screen 200 can be significantly improved, and the risk of cracking can be reduced; and along with the advance of roller 510, can be fine push out the air between flexible screen 200 and the crooked apron 100, showing the reduction and laminating the bubble.
By using the elastic material of the attaching member 520, a flexible attaching force is provided for attaching the flexible screen 200 to the curved cover plate 100, so that the flexible screen 200 can be protected while the attachment is more sufficient.
In the attaching process, the end attaching surface 520a2, which is more convex than the main attaching surface 520a1, on the first bottom surface 520a of the attaching piece 520 is used for closely attaching the bent end corner of the flexible screen 200 to the corresponding bottom surface end corner 100a2 of the bent cover plate 100, on the basis, the main attaching surface 520a1 on the first bottom surface 520a of the attaching piece 520 is used for gradually attaching the main body part of the flexible screen 200 to the bottom surface main body 100a1 of the bent cover plate 100, so that the local attaching sequence of the flexible screen 200 is optimized, the direction quantity of stress applied to the bent end corner of the flexible screen 200 is further reduced, the deformation of the bent end corner of the flexible screen 200 is simplified, the flexible screen 200 can be fully attached to the bent cover plate 100, and the yield of the curved screen is improved.
In step S702, a flowchart of a specific method for limiting the flexible screen to the fitting member of the fitting roller in the fitting jig provided in the foregoing embodiment is shown in fig. 12, and may include:
s7021: the main body part of the flexible screen is vacuum-adsorbed at the main binding surface of the binding piece, and the bent end corner of the flexible screen is vacuum-adsorbed at the end binding surface of the binding piece;
s7022: the flexible screen is heated to a preset temperature.
In this embodiment, vacuum adsorption is adopted to make the flexible screen 200 always be in the correct alignment position, so as to improve the precision of the attachment. And the flexible screen 200 is heated and softened, and the thermal deformation of the flexible screen 200 is realized under the combined action of the adsorption deformation of the adsorption holes 521, so that the pre-deformation effect is more natural and sufficient, and the flexible screen is favorably and fully attached to the bent cover plate 100. Optionally, the preset temperature may be 60 to 80 ℃, for example, 60 ℃, and the thermal expansion coefficients of the film layers of the flexible screen 200 at the temperature of 60 to 80 ℃ are relatively small, so that after the flexible screen is attached to the curved cover plate 100, no new defects such as rebound bubbles and the like are generated due to cooling shrinkage.
Based on the same inventive concept, the preparation method of the laminating roller provided by the embodiment of the application comprises the following steps:
a vacuum cavity, a vacuum channel communicated with the vacuum cavity and a circuit channel are reserved in the roller;
preparing an inner cavity of an initial mold for manufacturing an attaching piece according to the surface of the inner cavity of the bent cover plate, and processing the inner cavity of the initial mold according to the curvature radius of the attaching piece to be prepared to obtain a mold;
injecting the elastic material in a molten state into a mold, and cooling and molding to obtain a fitting piece;
the attaching piece is in interference fit with the surface of the roller; or, the attaching piece is adhered to the surface of the roller.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
1. the roller type attaching structure of the roller 510 is adopted to realize the roller type attaching of the flexible screen 200 and the curved cover plate 100, the flexible screen 200 and the curved cover plate 100 are in line contact during attaching, and the direction quantity of stress applied to the bending end angle of the flexible screen 200 at the same time can be reduced, so that the stress condition of the flexible screen 200 can be obviously improved, and the risk of fragmentation is reduced; with the advance of the roller 510, air between the flexible screen 200 and the curved cover plate 100 can be well extruded out, and attaching bubbles are remarkably reduced;
2. the fitting piece 520 is made of an elastic material, and provides a flexible fitting force for fitting the flexible screen 200 and the bent cover plate 100, so that the flexible screen 200 can be protected while fitting is more sufficient;
3. the end attaching surface 520a2 on the first bottom surface 520a of the attaching piece 520 is more convex than the main attaching surface 520a1, the bent end angle of the flexible screen 200 can be closely attached to the corresponding bottom surface end angle 100a2 of the bent cover plate 100 in the attaching process, on the basis, the main body part of the flexible screen 200 and the bottom surface main body 100a1 of the bent cover plate 100 are gradually attached to the attaching piece 520 through the main attaching surface 520a1 of the first bottom surface 520a, the local attaching sequence of the flexible screen 200 is optimized, the direction quantity of stress applied to the bent end angle of the flexible screen 200 is further reduced, the deformation of the bent end angle of the flexible screen 200 is simplified, the flexible screen 200 and the bent cover plate 100 can be fully attached, and the yield of the curved screen is improved;
4. the suction hole 521 of the adhesive member 520 is connected to an external vacuum device through the vacuum chamber 510a in the roller 510, thereby forming a vacuum suction system. The adsorption hole 521 can closely adsorb the flexible screen 200 on the first bottom surface 520a of the attaching member 520, so that the attaching process is guaranteed, the flexible screen 200 is always located at a correct alignment position, and the attaching precision is improved. The flexible screen 200 can be pre-deformed to a certain extent by the adsorption of the adsorption holes 521, the surface shape of the flexible screen 200 is close to the shape of the inner cavity of the curved cover plate 100, the attaching degree of the flexible screen 200 and the curved cover plate 100 during attaching is improved, the fracture risk is reduced, and the yield is improved;
5. the heating element 522 is additionally arranged in the laminating element 520 of the laminating roller 500, so that the flexible screen 200 can be heated, and the heating element and the adsorption deformation of the adsorption hole 521 jointly act to realize the thermal deformation of the flexible screen 200, the pre-deformation effect is more natural and sufficient, and the flexible screen is favorably and fully laminated with the bent cover plate 100.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (10)
1. A laminating roller (500), comprising: a roller (510) and an attachment member (520);
the attaching piece (520) is made of elastic materials, and the attaching piece (520) is provided with a first bottom surface (520 a), a second bottom surface (520 b) and a peripheral surface (520 c);
the second bottom surface (520 b) is attached to the surface of the roller (510);
the first bottom surface (520 a) comprises a main abutting surface (520 a 1) and an end abutting surface (520 a 2); the primary abutment surface (520 a 1) is parallel to the second bottom surface (520 b) and is adapted to cooperate with a bottom surface main body (100 a 1) of a curved cover plate (100); the end abutting surface (520 a 2) is used for being matched with the bottom surface end corner (100 a 2) of the bent cover plate (100); the end abutment surface (520 a 2) is raised from the main abutment surface (520 a 1);
the peripheral surface (520 c) connects the first bottom surface (520 a) and the second bottom surface (520 b); the circumferential surface (520 c) is adapted to cooperate with a curved surface (100 b) of the curved cover plate (100).
2. The laminating roller (500) according to claim 1, characterized in that the height of the end laminating surface (520 a 2) projecting above the main laminating surface (520 a 1) is H, 100 μ ι η ≦ H ≦ 150 μ ι η;
the end abutting surface (520 a 2) is a sector with the radius of 3 mm.
3. The laminating roller (500) according to claim 1, wherein the profile of the first bottom surface (520 a) is recessed by 0.4mm to 0.7mm compared to the profile of the bottom surface of the curved cover plate (100);
the circumferential surface (520 c) is an arc surface matched with the curved surface (100 b) of the curved cover plate (100), and the arc radius of the circumferential surface (520 c) is R1The arc radius of the curved surface (100 b) of the curved cover plate (100) is R2，R2-R1=0.7mm。
4. The laminating roller (500) according to any one of claims 1-3, characterized in that the roller cylinder (510) has a vacuum chamber (510 a), the vacuum chamber (510 a) being used for connecting a vacuum device; the roller (510) is also provided with a vacuum channel, one end of the vacuum channel is communicated with the vacuum cavity (510 a), and the other end of the vacuum channel is arranged at the surface of the roller (510) corresponding to the second bottom surface (520 b) of the attaching piece (520);
the jointing piece (520) is provided with a plurality of adsorption holes (521), one end of each adsorption hole (521) is opened and communicated with the vacuum channel of the roller (510), and the other end of each adsorption hole is opened and arranged at the main jointing surface (520 a 1) or the end jointing surface (520 a 2) of the first bottom surface (520 a); the diameter of the adsorption hole (521) is 0.5 mm-1 mm.
5. The bonding roller (500) according to claim 4, wherein the openings of the suction holes (521) at the main bonding surface (520 a 1) of the first bottom surface (520 a) are spaced apart from each other by a distance d in a longitudinal direction of the main bonding surface (520 a 1)1The distance between the main contact surface (520 a 1) in the width direction is d2，d1:d2=5:4；
Or, d1Is 25mm, d2Is 20 mm.
6. The laminating roller (500) according to claim 4, wherein the openings of the suction holes (521) at the end laminating surface (520 a 2) of the first bottom surface (520 a) are at least 3 and are distributed near the vertex of the end laminating surface (520 a 2).
7. The laminating roller (500) according to claim 4, characterized in that the laminating roller (500) further comprises a heating member (522), the heating member (522) comprising an annular heating pipe (522 a) and a plurality of bar-shaped heating pipes (522 b);
the fitting piece (520) is provided with an annular accommodating cavity and a plurality of strip-shaped accommodating cavities, the annular accommodating cavity is arranged along the edge of the fitting piece (520), and the strip-shaped accommodating cavities are arranged in an area defined by the annular accommodating cavities at intervals; the adsorption holes (521) are arranged between two adjacent strip-shaped containing cavities and/or between the annular containing cavity and the adjacent strip-shaped containing cavity;
the annular heating pipes (522 a) are arranged in the annular accommodating cavities, and the strip-shaped heating pipes (522 b) are arranged in the strip-shaped accommodating cavities in a one-to-one correspondence mode.
8. The utility model provides a laminating tool which characterized in that includes: a base (600), and a conformable roller (500) according to any of claims 1-7 above;
the base (600) is used for limiting the bent cover plate (100);
the attaching roller (500) is used for attaching the flexible screen (200) to the curved cover plate (100).
9. A method for attaching a flexible screen to a curved cover plate is characterized by comprising the following steps:
constraining a curved cover plate to the base in the bonding jig of claim 8;
restraining the flexible screen at the abutment of the abutment roller in the abutment jig of claim 8;
aligning the flexible screen on the fitting member of the fitting roller with the curved cover plate on the base;
one end of the flexible screen is attached to the corresponding end of the bent cover plate, and the attaching roller is driven to roll towards the other ends of the flexible screen and the bent cover plate along the base; in the rolling process, the end binding face of the binding piece of the binding roller tightly presses the corresponding part of the flexible screen and the bottom end corner of the bent cover plate.
10. The attaching method according to claim 9, wherein the restraining the flexible screen at the attaching member of the attaching roller in the attaching jig according to claim 8 comprises:
the main body part of the flexible screen is vacuum-adsorbed at the main binding surface of the binding piece, and the bent end corner of the flexible screen is vacuum-adsorbed at the end binding surface of the binding piece;
heating the flexible screen to a preset temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910994964.5A CN110722820B (en) | 2019-10-18 | 2019-10-18 | Laminating roller, laminating jig and laminating method of flexible screen and bent cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910994964.5A CN110722820B (en) | 2019-10-18 | 2019-10-18 | Laminating roller, laminating jig and laminating method of flexible screen and bent cover plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110722820A CN110722820A (en) | 2020-01-24 |
| CN110722820B true CN110722820B (en) | 2021-10-29 |
Family
ID=69221565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910994964.5A Active CN110722820B (en) | 2019-10-18 | 2019-10-18 | Laminating roller, laminating jig and laminating method of flexible screen and bent cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110722820B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111459226A (en) * | 2020-03-31 | 2020-07-28 | 联想(北京)有限公司 | Electronic device and method for mounting electronic device |
| CN113570962B (en) | 2020-04-28 | 2022-11-15 | 京东方科技集团股份有限公司 | Manufacturing device and manufacturing method of flexible display screen |
| CN111415592B (en) * | 2020-04-29 | 2022-04-15 | 京东方科技集团股份有限公司 | Method for attaching flexible display panel and cover glass and display device |
| CN111816063B (en) * | 2020-08-10 | 2022-09-16 | 京东方科技集团股份有限公司 | Pressing device, pressing jig and preparation method of curved surface display panel |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129144A (en) * | 2014-06-25 | 2014-11-05 | 深圳市晨晶机电有限公司 | Curved surface adhering equipment and adhering method |
| KR20150100202A (en) * | 2014-02-25 | 2015-09-02 | 주식회사 아바코 | Apparatus and method of bonding a film |
| KR20170039787A (en) * | 2015-10-01 | 2017-04-12 | 하이텍 주식회사 | The method for attaching a flexible panel to the curved window glass |
| CN106564268A (en) * | 2016-11-08 | 2017-04-19 | 武汉华星光电技术有限公司 | Curved surface screen laminating device and system |
| JP2018014535A (en) * | 2017-10-03 | 2018-01-25 | ショット グラス テクノロジーズ （スゾウ） カンパニー リミテッドＳｃｈｏｔｔ Ｇｌａｓｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ （Ｓｕｚｈｏｕ） Ｃｏ．， Ｌｔｄ． | Bound component of thin glass on support substrate, manufacturing method, and using of the same |
| CN208985566U (en) * | 2018-08-13 | 2019-06-14 | 武汉华星光电半导体显示技术有限公司 | A kind of Curved screen protective film and Curved screen |
| CN110091498A (en) * | 2019-05-10 | 2019-08-06 | 汪恒坤 | A kind of curve screens laminating apparatus and applying method |
| CN209401249U (en) * | 2019-01-18 | 2019-09-17 | 云谷（固安）科技有限公司 | The laminating apparatus of flexible display screen and curved surface cover board |
-
2019
- 2019-10-18 CN CN201910994964.5A patent/CN110722820B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150100202A (en) * | 2014-02-25 | 2015-09-02 | 주식회사 아바코 | Apparatus and method of bonding a film |
| CN104129144A (en) * | 2014-06-25 | 2014-11-05 | 深圳市晨晶机电有限公司 | Curved surface adhering equipment and adhering method |
| KR20170039787A (en) * | 2015-10-01 | 2017-04-12 | 하이텍 주식회사 | The method for attaching a flexible panel to the curved window glass |
| CN106564268A (en) * | 2016-11-08 | 2017-04-19 | 武汉华星光电技术有限公司 | Curved surface screen laminating device and system |
| JP2018014535A (en) * | 2017-10-03 | 2018-01-25 | ショット グラス テクノロジーズ （スゾウ） カンパニー リミテッドＳｃｈｏｔｔ Ｇｌａｓｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ （Ｓｕｚｈｏｕ） Ｃｏ．， Ｌｔｄ． | Bound component of thin glass on support substrate, manufacturing method, and using of the same |
| CN208985566U (en) * | 2018-08-13 | 2019-06-14 | 武汉华星光电半导体显示技术有限公司 | A kind of Curved screen protective film and Curved screen |
| CN209401249U (en) * | 2019-01-18 | 2019-09-17 | 云谷（固安）科技有限公司 | The laminating apparatus of flexible display screen and curved surface cover board |
| CN110091498A (en) * | 2019-05-10 | 2019-08-06 | 汪恒坤 | A kind of curve screens laminating apparatus and applying method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110722820A (en) | 2020-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110722820B (en) | Laminating roller, laminating jig and laminating method of flexible screen and bent cover plate | |
| TWI736697B (en) | Cold-form glass lamination to a display | |
| JP2002544416A (en) | Assembly of integrated multi-glass window unit and sash and method of manufacturing the same | |
| KR20190125485A (en) | Apparatus and method for picking up, forming and placing thin glass plates | |
| CN111816063B (en) | Pressing device, pressing jig and preparation method of curved surface display panel | |
| CN111488074A (en) | Panel attaching method of curved screen and curved screen | |
| JP4226038B2 (en) | Method and apparatus for producing multilayer glass panel with glazing gasket | |
| CN111777338A (en) | Single-glass film, double-glass film hollow glass, manufacturing method, production equipment and application | |
| CN104093569A (en) | Device for producing and method for producing laminate body | |
| JPH11189439A (en) | Double glazing and its production | |
| CN111128039A (en) | Flexible LED thin film display screen and preparation method thereof | |
| CN211005142U (en) | S-shaped curved surface hollow glass | |
| CN109302843B (en) | Curved composite vitreous glass sheet with embedded curved continuous display and method of making same | |
| CN111302669A (en) | Gas pressure heat-preservation heat-dissipation light-transmitting tempered glass plate with function of regulating and controlling glass interval interlayer | |
| CN112757751B (en) | Processing method of wave-curved arc laminated glass | |
| CN215970559U (en) | Glass apron laminating gyro wheel structure | |
| CN110818285B (en) | S-shaped curved surface hollow glass and preparation method thereof | |
| CN112802918A (en) | Cold-bending forming multi-layer glass product, forming tool and manufacturing method thereof | |
| CN211106093U (en) | Multi-curved surface toughened interlayer hollow glass | |
| CN219509521U (en) | PET (polyethylene terephthalate) film hollow component and energy-saving glass formed by a plurality of PET film hollow components | |
| CN204547277U (en) | A kind of solar panels laminating machine | |
| CN215169355U (en) | Novel LOW-E hollow glass | |
| WO2020118677A1 (en) | Vacuum thermal insulation glass plate regulated by cavities at intervals of double-adhesive sealed glass | |
| CN218084550U (en) | Laminated vacuum glass and vehicle window | |
| CN112878581B (en) | Processing method of wave-curved arc-shaped hollow glass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |