CN110992827A - Flexible film, panel assembly and display - Google Patents
Flexible film, panel assembly and display Download PDFInfo
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- CN110992827A CN110992827A CN201911165255.2A CN201911165255A CN110992827A CN 110992827 A CN110992827 A CN 110992827A CN 201911165255 A CN201911165255 A CN 201911165255A CN 110992827 A CN110992827 A CN 110992827A
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- flexible film
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- 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
- G09F9/301—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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
Abstract
The invention relates to a flexible film, wherein at least one corner part on the flexible film is provided with a corner cut, the corner cut comprises a first cut edge and a second cut edge, the first cut edge is connected with one edge of the corner part, and the second cut edge is connected with the other edge of the corner part; the cutting angle has an angle, the cutting angle is an angle formed by the first cutting edge and the second cutting edge, and the cutting angle is larger than or equal to 150 degrees and smaller than or equal to 180 degrees. In the flexible film, the corner part of the flexible film is cut into the corner cutting angles along the first cutting edge and the second cutting edge, so that the corner cutting angles of the corner part of the flexible film are hollow areas. When the flexible film is attached to the cover plate with the three-dimensional curved surface, the corner cut faces the corner of the cover plate. Because the chamfer is the hollow area, when the flexible film is attached to the cover plate, wrinkles generated in the area corresponding to the chamfer are avoided or reduced, and a stress concentration area is avoided or reduced.
Description
Technical Field
The invention relates to the technical field of three-dimensional curved surface mounting, in particular to a flexible film, a panel assembly and a display.
Background
In the existing electronic products, a large number of attaching structures exist, such as plane attaching or three-dimensional curved surface attaching. In the three-dimensional curved surface laminating, a flexible substrate or a flexible film is laminated (or glued) with a three-dimensional curved surface cover plate, the surface form of the electronic equipment is diversified through the three-dimensional curved surface laminating of the flexible film, and the three-dimensional curved surface display can be realized.
When the three-dimensional curved surface is attached, particularly the attaching at the corner is easy to have the problems of attaching wrinkles and stress concentration.
Disclosure of Invention
In view of the above, it is desirable to provide a flexible film, a panel assembly, and a display, which are capable of solving the problems of the occurrence of wrinkles and stress concentration when three-dimensionally curved surfaces are bonded, particularly at corners.
In order to solve the technical problem, the invention provides a flexible film, wherein at least one corner part on the flexible film is provided with a cutting corner, the cutting corner comprises a first cutting edge and a second cutting edge, the first cutting edge is connected with one edge of the corner part, and the second cutting edge is connected with the other edge of the corner part;
the cutting angle has an angle, the cutting angle is an angle formed by the first cutting edge and the second cutting edge, and the cutting angle is larger than or equal to 150 degrees and smaller than or equal to 180 degrees.
In the flexible film, the corner part of the flexible film is cut into the corner cutting angles along the first cutting edge and the second cutting edge, so that the corner cutting angles of the corner part of the flexible film are hollow areas. When the flexible film is attached to the cover plate with the three-dimensional curved surface, the corner cut faces the corner of the cover plate. Because the chamfer is the hollow area, when the flexible film is attached to the cover plate, wrinkles generated in the area corresponding to the chamfer can be avoided or reduced, and a stress concentration area can be avoided or reduced.
In one embodiment, the flexible film is a flexible display screen or a flexible sensing film, and the flexible display screen includes, but is not limited to, an organic light emitting diode display screen and a micro organic light emitting diode display screen.
In one embodiment, the flexible film is provided with a functional region and a non-functional region, the non-functional region includes a region where a corner portion of the flexible film is located, and the corner cut is located in the non-functional region.
In one embodiment, the flexible film is provided with a functional region and a non-functional region, the non-functional region is located at the edge of the flexible film and surrounds the functional region, and the chamfer is located in the non-functional region.
The invention also provides a panel component which comprises a cover plate and the flexible film, wherein the front surface of the cover plate is a three-dimensional curved surface, the flexible film is attached to the front surface of the cover plate, and the corner cut of the flexible film is opposite to the corner of the cover plate.
In one embodiment, a first curved surface is arranged between two adjacent side surfaces at the corner of the cover plate, one end of the first curved surface is smoothly connected with one side surface at the corner of the cover plate, and the other end of the first curved surface is smoothly connected with the other side surface at the corner of the cover plate;
and a second curved surface is arranged between the front surface of the cover plate and the side surface of the cover plate, one end of the second curved surface is smoothly connected with the front surface of the cover plate, and the other end of the second curved surface is smoothly connected with the side surface of the cover plate.
In one embodiment, the bending radius of the first curved surface is a side surface bending radius RcgThe first cutting edge and the second cutting edge are equal in length, and the length of the first cutting edge and the length of the second cutting edge are L and Rcg/L＝8/5.83～8/5.66。
In one embodiment, the cover plate is a glass cover plate or a resin cover plate.
In one embodiment, the panel assembly further includes a back plate, and the cover plate is disposed on the back plate.
The invention also provides a multimedia terminal which comprises a shell and the panel assembly, wherein the panel assembly is arranged on the front surface of the shell, the flexible film is positioned on one side of the panel assembly, which is far away from the back surface of the shell, and the flexible film is a flexible display film.
Drawings
FIG. 1 is a schematic view of a 180 degree corner cut flexible film provided by one embodiment of the present invention;
FIG. 2 is an enlarged view of a corner of the flexible membrane of FIG. 1;
FIG. 3 is a schematic view of a 150 degree corner cut flexible film provided by one embodiment of the present invention;
FIG. 4 is an enlarged view of a corner of the flexible membrane of FIG. 3;
FIG. 5 is a perspective view of a cover plate assembly having a rectangular front face according to an embodiment of the present invention;
FIG. 6 is a perspective view of a cover plate in a panel assembly according to one embodiment of the present invention;
FIG. 7 is an enlarged partial view of a corner of the cover plate of FIG. 6;
FIG. 8 is a perspective view of a panel assembly having a hexagonal front cover according to one embodiment of the present invention;
FIG. 9 is an enlarged schematic view of a corner of a flexible membrane in accordance with another embodiment of the invention;
FIG. 10a is a schematic view of a flexible film without cut corners in a folded state after lamination according to an embodiment of the present invention;
FIG. 10b is a schematic diagram illustrating a folded state of a flexible film with a cut angle of 180 degrees according to an embodiment of the present invention;
FIG. 10c is a schematic view of a flexible film having a cut angle of 170 degrees in accordance with an embodiment of the present invention in a folded state;
FIG. 10d is a schematic view of a flexible film with a cut angle of 150 degrees in accordance with an embodiment of the present invention in a folded state;
FIG. 11a is a schematic representation of the strain of a flexible film without cut corners after lamination in accordance with an embodiment of the present invention;
FIG. 11b is a schematic view of a flexible film conforming to a strain with a cut angle of 180 degrees in accordance with an embodiment of the present invention;
FIG. 11c is a schematic representation of the applied strain of a flexible film having a cut angle of 170 degrees in accordance with an embodiment of the present invention;
FIG. 11d is a schematic representation of the applied strain of a flexible film having a cut angle of 150 degrees in accordance with one embodiment of the present invention;
FIG. 12a is a schematic view of a flexible film without cut corners under stress in accordance with an embodiment of the present invention;
FIG. 12b is a schematic view of a flexible film with a cut angle of 180 degrees under stress in accordance with an embodiment of the present invention;
FIG. 12c is a schematic view of a flexible film with a cut angle of 170 degrees under stress in accordance with an embodiment of the present invention;
FIG. 12d is a schematic diagram illustrating the stress after attaching the flexible film with a cut angle of 150 degrees according to an embodiment of the present invention.
The reference numerals in the specification are as follows:
1. a flexible film; 11. a corner portion; 12. cutting corners; 121. first trimming; 122. second trimming; 13. a functional region; 14. a non-functional region; 2. a cover plate; 21. a first curved surface; 22. a second curved surface; 3. a back plate; 4. a circular arc segment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on methods or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, an embodiment of the present invention provides a flexible film 1, wherein at least one corner portion 11 of the flexible film 1 is provided with a corner cut 12, the corner cut 12 includes a first cut edge 121 and a second cut edge 122, the first cut edge 121 is connected to one side of the corner portion 11, and the second cut edge 122 is connected to the other side of the corner portion 11. In this embodiment, the corner portion 11 of the flexible film 1 is cut into the corner 12 along the first cut edge 121 and the second cut edge 122, so that the corner 12 of the corner portion 11 of the flexible film 1 becomes a hollow area. When the flexible film 1 is attached to the cover plate 2 having a three-dimensional curved surface, particularly when the corner of the cover plate 2 is in a three-dimensional curved surface shape, the corner cut 12 is directly opposite to the corner of the cover plate 2. Because the chamfer 12 is a hollow-out region, when the flexible film 1 is attached to the cover plate 2, wrinkles generated in a region corresponding to the chamfer 12 can be avoided or reduced, and a stress concentration region can be avoided or reduced.
The chamfer 12 has an angle, the chamfer angle θ is an angle formed by the first cut edge 121 and the second cut edge 122, and the chamfer angle θ is 150 degrees or more and 180 degrees or less. At the corner of the cover plate 2, two adjacent sides are transited by the first curved surface 21, and at the same time, the front and sides of the cover plate 2 are transited by the second curved surface 22. The three-dimensional curved surface at the corner comprises two parameters, wherein the side surface bending radius R at the corner of one cover plate 2cgSide bending radius RcgIn particular to the bending radius of the first curved surface 21 between two adjacent side surfaces at the corner; the other is the side bending radius RtSide bending radius RtIn particular the radius of curvature of the second curved surface 22 between the front surface of the cover plate 2 and the side surface of the cover plate 2. Therefore, at least the first curved surface 21 and the second curved surface 22 are present at the corners of the cover 2, the shape of the corners of the cover 2 is complicated, and in order to further reduce wrinkles and stress at the corners 11 of the flexible film 1 after the flexible film 1 and the cover 2 are bonded, the cutting range of the corners 11, that is, the cut angle θ is enlarged, specifically, as shown in fig. 1 to 4, the cut angle θ is larger than the cut angle θEqual to 150 degrees and less than or equal to 180 degrees. In this way, the edge of the flexible film 1 close to the first cut edge 121 and the edge close to the second cut edge 122 can avoid the corner of the cover plate 2 as much as possible. Fig. 1 is a schematic view of a flexible film 1 with a cut angle θ of 180 degrees, fig. 3 is a schematic view of a flexible film 1 with a cut angle θ of 150 degrees, and specific values of the cut angle θ may be 150 degrees, 155 degrees, 160 degrees, 165 degrees, 170 degrees, 175 degrees, 180 degrees, or any other values between 150 degrees and 180 degrees.
In this embodiment, if the cutting angle is less than 150 degrees, the wrinkles will be relatively obvious; although the wrinkles can be reduced when the angle is larger than 180 degrees, the viewing area may affect the functional area along with the excessive cutting of the flexible film, for example, when the flexible film is a flexible display film, the display function of the display area is affected by the excessive cutting angle. Therefore, when the cut angle is 150 to 180 degrees, wrinkles can be reduced more effectively while avoiding an influence on the display area.
The number of corner portions 11 provided with the cut corners 12 in the flexible film 1, specifically, the number of corner portions 11 provided with the cut corners 12 may be one, two, or three or more, but of course, all the corner portions 11 of the flexible film 1 may be provided with the cut corners 12.
In one embodiment, the first cut edge is a straight line and the second cut edge is a straight line.
In an embodiment, the flexible film 1 may be a flexible display screen or a flexible sensing film, and the flexible display screen includes, but is not limited to, an organic light emitting diode display screen and a micro organic light emitting diode display screen. The flexible film 1 is a flexible display screen, and then the panel assembly hereinafter is a flexible display panel assembly.
In one embodiment, as shown in fig. 1, the flexible film 1 is provided with a functional region 13 and a non-functional region 14, the non-functional region 14 includes a region where the corner 11 of the flexible film 1 is located, and the corner cut 12 is located in the non-functional region 14. The functional region 13 on the flexible film 1 specifically refers to a region for implementing the function of the flexible film 1, for example, the flexible film 1 is a flexible display screen, then the functional region 13 of the flexible film 1 is a display region, and the non-functional region 14 is a region independent of the display region. For another example, if the flexible film 1 is a flexible sensing film, the functional region 13 of the flexible film 1 is a region having a sensing function, and the non-functional region 14 is a region having no sensing function. In this embodiment, the cut corner 12 is disposed in the non-functional area 14, so as to avoid interference with the normal use of the flexible film 1 due to the cut corner 12. Meanwhile, in this embodiment, the non-functional region 14 is disposed at the corner, and the area of the functional region 13 is increased to the maximum, so that the flexible film 1 can better and maximally realize the function on the three-dimensional curved surface, for example, after the flexible film 1 is attached to the cover plate 2 having the three-dimensional curved surface, at least a part of the edge of the flexible film 1 is attached to the second curved surface 22, and when the non-functional region 14 is disposed at the corner 11 of the flexible film 1, the functional region 13 can be extended to the edge of the flexible film 1 except the corner 11, so that the edge of the flexible film 1 can also realize the function, that is, the function of the flexible film 1 is realized on the second curved surface 22 of the cover plate 2.
In one embodiment, as shown in fig. 3, the flexible film 1 is provided with a functional region 13 and a non-functional region 14, the non-functional region 14 is located at the edge of the flexible film 1 and surrounds the functional region 13, and the chamfer 12 is located in the non-functional region 14. The functional region 13 is located in the middle area of the flexible film 1, the non-functional region 14 surrounds the functional region 13, and the non-functional region 14 covers the corner 11 of the flexible film 1 and also covers the chamfer 12, so that the function of the flexible film 1 is prevented from being damaged due to the arrangement of the chamfer 12.
An embodiment of the present invention further provides a panel assembly, as shown in fig. 5, the panel assembly includes a cover plate 2 and the flexible film 1, the front surface of the cover plate 2 is a three-dimensional curved surface, the flexible film 1 is attached to the front surface of the cover plate 2, and the corner cut 12 of the flexible film 1 faces the corner of the cover plate 2. In this embodiment, the corner portion 11 of the flexible film 1 in the panel assembly is cut into the corner 12 along the first cut edge 121 and the second cut edge 122, so that the corner 12 of the corner portion 11 of the flexible film 1 is a hollow area. When the flexible film 1 is attached to the cover plate 2 having a three-dimensional curved surface, particularly when the corner of the cover plate 2 is in a three-dimensional curved surface shape, the corner cut 12 is directly opposite to the corner of the cover plate 2. Because the chamfer 12 is a hollow-out region, when the flexible film 1 is attached to the cover plate 2, wrinkles of the flexible film in the panel assembly in a region corresponding to the chamfer 12 are avoided or reduced, and a stress concentration region of the flexible film in the panel assembly is avoided or reduced.
In an embodiment, as shown in fig. 6 and 7, a first curved surface 21 is disposed at a corner of the cover plate 2 and between two adjacent side surfaces of the corner of the cover plate 2, one end of the first curved surface 21 is smoothly connected to one side surface of the cover plate 2, and the other end of the first curved surface 21 is smoothly connected to the other side surface of the cover plate 2. A second curved surface 22 is arranged between the front surface of the cover plate 2 and the side surface of the cover plate 2, one end of the second curved surface 22 is smoothly connected with the front surface of the cover plate 2, and the other end of the second curved surface 22 is smoothly connected with the side surface of the cover plate 2. The three-dimensional curved surface at the corner comprises two parameters, wherein the side surface bending radius at the corner of one parameter cover plate 2 is RcgAnother parameter is the side bend radius RtSide bending radius RcgThe radius of curvature of the first curved surface 21 between two adjacent side surfaces at the corner, the side radius of curvature RtIs the radius of curvature of the second curved surface 22 between the front and side surfaces of the cover plate 2. The first cut edge 121 and the second cut edge 122 are equal in length, and the length of the first cut edge 121 and the length of the second cut edge 122 are L and Rcg/L＝8/5.83～8/5.66。
To verify the effect of the chamfer 12 of the flexible membrane 1 on wrinkles and stress concentrations, different parameters were designed to simulate the wrinkle and stress conditions. The Young's modulus of the flexible film 1 was 1.5GPa (GPa is a unit of billion pascals), and the side bending radius R wast1.5mm (mm is the unit millimeter of length), side bend radius RcgThe simulated cover plate 2 is a 5-inch cover plate 2 with a specific shape as shown in fig. 6 and 7.
The effect of the flexible membrane 1 design on the buckling and stress of the conformable structure is shown in fig. 10 a-12 d. Fig. 10a to 10d show the design conditions of the corners of the flexible film 1, including the design without the cut angle 12 and the design with three different cut angles θ, which are four corner conditions in total, in which fig. 10a shows the design of the corners without the cut angle 12, and fig. 10b shows the design with the cut angle θ being 180 degrees and R being equal to the cut angle θcgThe corner design when/L is 5.66/8, and fig. 10c shows that the cutting angle θ is 170 degrees and R iscgThe corner design when/L is 5.68/8, and fig. 10d shows that the cutting angle θ is 150 degrees and R iscgA corner design when/L is 5.83/8, wherein RcgIs the side bending radius, and L is the length of the first cut edge and the second cut edge. Fig. 10a to 10d show the folding state of the four corner conditions after the flexible film 1 is attached, and as can be seen from the black coil in fig. 10a to 10d, the corner 11 of the flexible film 1 without the chamfer 12 is attached to generate more folding, and the folding condition is complicated. Fig. 11a to 11d show the strain state after the corner portion 11 of the flexible film 1 is attached under four corner conditions, wherein fig. 11a corresponds to the corner design without cut angle in fig. 10a, fig. 11b corresponds to the corner design in fig. 10b, fig. 11c corresponds to the corner design in fig. 10c, and fig. 11d corresponds to the corner design in fig. 10d, and as can be seen from the positions indicated by the black circles and arrows in fig. 11a to 11d, the corner portion 11 of the flexible film 1 without cut angle 12 produces a larger strain after being attached, and the strain produced by attaching the corner portions 11 of the flexible films 1 with the other three design cut angles 12 becomes smaller by 4%. Fig. 12 a-12 d show stress concentration after the corner 11 of the flexible film 1 is attached under four corner conditions, wherein fig. 12a corresponds to the corner design without cut corners in fig. 10a, fig. 12b corresponds to the corner design in fig. 10b, fig. 12c corresponds to the corner design in fig. 10c, and fig. 12d corresponds to the corner design in fig. 10 d. From the simulation diagrams of fig. 12a to 12d, it is apparent that when the flexible film 1 without the cut corner 12 is attached to the cover plate 2, the stress is concentrated at the corner of the cover plate 2 in the area inside the black coil; when the flexible film 1 with the cut angle 12 is attached to the cover plate 2, stress blank can be seen clearly at the corner of the cover plate 2, and high stress concentration areas are reduced.
The results show that the provision of the chamfer 12 at the corner 11 of the flexible film 1 effectively reduces the wrinkling of the flexible film 1 after lamination, and reduces the strain by 4% and the high stress area.
As shown in fig. 6 and 8, the front surface of the cover 2 may be rectangular, triangular, hexagonal, or the like, and the flexible surface 1 has the same shape as the cover 2.
In one embodiment, the cover plate 2 is a glass cover plate 2 or a resin cover plate 2.
In one embodiment, as shown in fig. 6 or 8, the panel assembly further includes a back plate 3, and the cover plate 2 is disposed on the back plate 3.
In one embodiment, as shown in fig. 9, the cutting angle range between the first cutting edge 121 and the second cutting edge 122 on the corner portion 11 is greater than or equal to 150 degrees and less than or equal to 180 degrees, and in addition, the first cutting edge 121 and the second cutting edge 122 are connected by the circular arc segment 4 to prevent the first cutting edge 121 and the second cutting edge 122 from being torn at the intersection point. In the preferred embodiment, the circular arc segment 4 is tangent to both the first cut edge 121 and the second cut edge 122 to ensure smooth connection.
An embodiment of the present invention further provides a multimedia terminal, which includes a housing (not shown in the drawings) and the aforementioned panel assembly, wherein the panel assembly is disposed on a front surface of the housing, the flexible film 1 is located on a side of the panel assembly away from a back surface of the housing, and the flexible film 1 is a flexible display film. In the multimedia terminal including the panel assembly disposed in the housing, the corner portion 11 of the flexible film 1 in the panel assembly is cut along the first cut edge 121 and the second cut edge 122 to form the cut corner 12, so that the cut corner 12 of the corner portion 11 of the flexible film 1 is a hollow area. When the flexible film 1 is attached to the cover plate 2 having a three-dimensional curved surface, particularly when the corner of the cover plate 2 is in a three-dimensional curved surface shape, the corner cut 12 is directly opposite to the corner of the cover plate 2. Because the chamfer 12 is a hollow-out region, when the flexible film 1 is attached to the cover plate 2, wrinkles of the flexible film 1 in the multimedia terminal in a region corresponding to the chamfer 12 are avoided or reduced, and a stress concentration region of the flexible film 1 in the multimedia terminal is avoided or reduced.
The multimedia terminal includes any electronic devices such as a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), a Point of Sales (POS), and a wearable device. Examples of multimedia terminals include, but are not limited to, satellite or cellular telephones. A Personal Communications System (PCS) terminal that may combine a cellular telephone with data processing, facsimile and data communications capabilities. PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers. And conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A flexible film is characterized in that at least one corner part of the flexible film is provided with a cutting corner, the cutting corner comprises a first cutting edge and a second cutting edge, the first cutting edge is connected with one edge of the corner part, and the second cutting edge is connected with the other edge of the corner part;
the cutting angle has an angle, the cutting angle is an angle formed by the first cutting edge and the second cutting edge, and the cutting angle is larger than or equal to 150 degrees and smaller than or equal to 180 degrees.
2. The flexible film of claim 1, wherein the flexible film is an organic light emitting diode display, a micro organic light emitting diode display, or a flexible sensing film.
3. The flexible film of claim 1, wherein the flexible film has a functional region and a non-functional region, the non-functional region comprising a region where a corner of the flexible film is located, and the cut angle is located in the non-functional region.
4. The flexible film of claim 1, wherein the flexible film has a functional region and a non-functional region, the non-functional region is located at an edge of the flexible film and surrounds the functional region, and the chamfer is located in the non-functional region.
5. A panel assembly, comprising a cover plate and the flexible film of any one of claims 1 to 4, wherein the front surface of the cover plate is a three-dimensional curved surface, the flexible film is attached to the front surface of the cover plate, and the corner cut of the flexible film is opposite to the corner of the cover plate.
6. The panel assembly according to claim 5, wherein a first curved surface is provided between two adjacent sides of the corner of the cover plate, one end of the first curved surface is smoothly connected to one side of the corner of the cover plate, and the other end of the first curved surface is smoothly connected to the other side of the corner of the cover plate;
and a second curved surface is arranged between the front surface of the cover plate and the side surface of the cover plate, one end of the second curved surface is smoothly connected with the front surface of the cover plate, and the other end of the second curved surface is smoothly connected with the side surface of the cover plate.
7. The panel assembly of claim 6, wherein the first curved surface has a radius of curvature that is a side radius of curvature RcgThe first cutting edge and the second cutting edge are equal in length, and the length of the first cutting edge and the length of the second cutting edge are L and Rcg/L＝8/5.83～8/5.66。
8. The panel assembly of claim 5, wherein the cover panel is a glass cover panel or a resin cover panel.
9. The panel assembly according to any one of claims 5 to 8, further comprising a back plate, the cover plate being disposed on the back plate.
10. A multimedia terminal comprising a housing and a panel assembly according to any one of claims 5 to 9, wherein the panel assembly is disposed on a front surface of the housing, the flexible film is disposed on a side of the panel assembly away from a back surface of the housing, and the flexible film is a flexible display film.
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Cited By (8)
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| CN111627338A (en) * | 2020-06-28 | 2020-09-04 | 武汉天马微电子有限公司 | Profiling module, manufacturing method of curved surface display screen and laminating system of curved surface display screen |
| CN111710245A (en) * | 2020-07-17 | 2020-09-25 | 京东方科技集团股份有限公司 | Flexible display panel, preparation method thereof, display device and display module |
| CN111993661A (en) * | 2020-08-25 | 2020-11-27 | 烟台正海科技股份有限公司 | Laminating forming method of explosion-proof film for touch screen |
| CN112053632A (en) * | 2020-09-16 | 2020-12-08 | 京东方科技集团股份有限公司 | Display device and manufacturing method thereof |
| CN113219703A (en) * | 2021-05-08 | 2021-08-06 | 武汉华星光电技术有限公司 | Display panel and manufacturing method thereof |
| WO2022089036A1 (en) * | 2020-10-30 | 2022-05-05 | 京东方科技集团股份有限公司 | Cover plate and foldable display apparatus |
| CN114446155A (en) * | 2020-11-02 | 2022-05-06 | 北京小米移动软件有限公司 | Four-side curved flexible screen, display terminal and laminating method of display terminal |
| US11611051B2 (en) | 2020-09-16 | 2023-03-21 | Boe Technology Group Co., Ltd. | Display panel and display device |
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| CN111710245A (en) * | 2020-07-17 | 2020-09-25 | 京东方科技集团股份有限公司 | Flexible display panel, preparation method thereof, display device and display module |
| US11922843B2 (en) | 2020-07-17 | 2024-03-05 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Flexible display panel and preparation method therefor, and display device and display module |
| CN111993661A (en) * | 2020-08-25 | 2020-11-27 | 烟台正海科技股份有限公司 | Laminating forming method of explosion-proof film for touch screen |
| US11611051B2 (en) | 2020-09-16 | 2023-03-21 | Boe Technology Group Co., Ltd. | Display panel and display device |
| US11806974B2 (en) | 2020-09-16 | 2023-11-07 | Boe Technology Group Co., Ltd. | Display panel, display device and manufacturing method thereof |
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| WO2022089036A1 (en) * | 2020-10-30 | 2022-05-05 | 京东方科技集团股份有限公司 | Cover plate and foldable display apparatus |
| GB2610740A (en) * | 2020-10-30 | 2023-03-15 | Boe Technology Group Co Ltd | Cover plate and foldable display apparatus |
| US11763702B2 (en) | 2020-10-30 | 2023-09-19 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Cover plate and foldable display apparatus |
| CN114446155A (en) * | 2020-11-02 | 2022-05-06 | 北京小米移动软件有限公司 | Four-side curved flexible screen, display terminal and laminating method of display terminal |
| CN114446155B (en) * | 2020-11-02 | 2024-02-09 | 北京小米移动软件有限公司 | Four-side curved flexible screen, display terminal and bonding method thereof |
| CN113219703A (en) * | 2021-05-08 | 2021-08-06 | 武汉华星光电技术有限公司 | Display panel and manufacturing method thereof |
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