CN113096536A - Folding structure and folding display device - Google Patents
Folding structure and folding display device Download PDFInfo
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- CN113096536A CN113096536A CN202110372872.0A CN202110372872A CN113096536A CN 113096536 A CN113096536 A CN 113096536A CN 202110372872 A CN202110372872 A CN 202110372872A CN 113096536 A CN113096536 A CN 113096536A
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- bendable
- folding
- display panel
- flexible display
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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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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Abstract
The embodiment of the application provides a folding structure and folding display equipment. In the folding structure provided by the embodiment of the application, because one end of the second supporting part is provided with the convex sub-part, the first curved surface of the convex sub-part is matched with the binding region of the flexible display panel in the folding display device and/or the binding region of the flip chip in the folding display device in shape, so that the first curved surface of the convex sub-part is attached to the binding region of the flexible display panel in the folding display device and/or the binding region of the flip chip in the folding display device, the convex sub-part can effectively support the binding region of the flexible display panel and/or the binding region of the flip chip, the structural stability of the folding display device can be improved, and the damage probability of the folding display device can be reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to a folding structure and folding display equipment.
Background
With the continuous development of display technology, portable large-screen display devices are becoming more and more popular with consumers. Currently, flexible display devices represented by OLED (Organic Light Emitting Diode) display devices have characteristics of being deformable and bendable, and have advantages of self-luminescence, high Light Emitting efficiency, short response time, high definition, high contrast, and the like, and thus, the flexible display devices are the focus of research on foldable display devices.
Folding display device supports flexible display panel through setting up beta structure, and realize the buckling of flexible display panel, flexible display panel is connected with beta structure, current beta structure is mostly the dull and stereotyped structure that can buckle, lead to binding the in-process, the regional part of binding of flexible display panel and/or flip chip film can have the virtual phenomenon of pasting with beta structure, cause the regional part of binding that beta structure can not effectively support flexible display panel and/or flip chip film, and then lead to folding display device to appear the problem of damage easily.
Disclosure of Invention
The application provides a folding structure and a folding display device aiming at the defects of the prior art, and is used for solving the technical problem that the folding structure cannot effectively support the binding region part of the flexible display panel in the prior art.
In a first aspect, embodiments of the present application provide a folding structure between a flexible display panel and a circuit element of a folding display device, the folding structure including: the first supporting part, the second supporting part and the bendable part are positioned between the first supporting part and the second supporting part;
the second supporting portion comprises a flat plate sub-portion and a protruding sub-portion, the protruding sub-portion is located on one side, away from the bendable portion, of the flat plate sub-portion, the protruding sub-portion comprises a first curved surface, and the first curved surface is matched with the shape of a binding region of a flexible display panel in the folding display device and/or the shape of a binding region of a flip-chip film in the folding display device.
In a second aspect, an embodiment of the present application provides a foldable display device, including: the flexible display panel, the chip on film and the circuit element are electrically connected with the folding structure provided by the first aspect;
the first curved surface of the convex sub-part of the second supporting part in the folding structure is matched with the shape of the binding area of the flexible display panel and/or the binding area of the chip on film; the binding area part of the flexible display panel and/or the binding area part of the chip on film are attached to two sides of the protrusion sub-part.
The beneficial technical effects brought by the technical scheme provided by the embodiment of the application comprise:
in the folding structure provided by the embodiment of the application, because one end of the second supporting part is provided with the convex sub-part, the first curved surface of the convex sub-part is matched with the binding region of the flexible display panel in the folding display device and/or the binding region of the flip chip in the folding display device in shape, so that the first curved surface of the convex sub-part is attached to the binding region of the flexible display panel in the folding display device and/or the binding region of the flip chip in the folding display device, the convex sub-part can effectively support the binding region of the flexible display panel and/or the binding region of the flip chip, the structural stability of the folding display device can be improved, and the damage probability of the folding display device can be reduced.
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 structural diagram of a first folding structure provided in an embodiment of the present application;
FIG. 2 is a top view of the folded configuration of FIG. 1 provided by an embodiment of the present application;
FIG. 3 is an enlarged schematic view of the folding structure shown in FIG. 1 at A according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a second folding structure provided in the embodiments of the present application;
FIG. 5 is a schematic structural diagram of a third folding structure provided in the embodiments of the present application;
FIG. 6 is a schematic structural diagram of a fourth folding structure provided in the embodiments of the present application;
fig. 7 is a schematic structural diagram of a fifth folding structure provided in the embodiments of the present application;
FIG. 8 is a schematic structural diagram of a sixth folding structure provided in an embodiment of the present application;
fig. 9 is a schematic structural diagram of a seventh folding structure provided in the embodiments of the present application;
FIG. 10 is a schematic structural diagram of an eighth folding structure provided in the embodiments of the present application;
fig. 11 is a schematic structural diagram of a first foldable display device according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of a second foldable display device provided in an embodiment of the present application;
fig. 13 is a schematic structural diagram of a third foldable display device provided in the embodiment of the present application;
fig. 14 is a schematic structural diagram of a fourth foldable display device provided in the embodiment of the present application;
fig. 15 is a schematic structural diagram of a fifth foldable display device according to an embodiment of the present application;
fig. 16 is a schematic structural diagram of a sixth foldable display device according to an embodiment of the present application.
Description of reference numerals:
100-a folded configuration;
10-a first support part;
20-a second support; 21-a plate subsection; 22-a boss portion; 221-a first surface of the boss portion 22; 222-a second surface of the boss portion 22; 223 — a first curved surface of the convex sub-portion 22; 224-a first portion of the boss 22; 225-a second portion of the boss portion 22;
30-a bendable part; 31-a first bendable minor portion; 311-circular hole; 32-a second bendable minor portion; 321-strip-shaped holes;
200-a flexible display panel; 210 — a bonding area portion of the flexible display panel 200; 220-the portion of the flexible display panel 200 other than the binding region portion;
300-chip on film;
400-a polarizing layer;
500-cover plate;
600-circuit elements.
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, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, 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 inventor of this application researches and discovers, among the current folding display device, be used for supporting flexible display panel and realize that flexible display panel's beta structure of buckling is mostly dull and stereotyped structure, and flexible display panel's the regional part of binding and/or the regional part of binding of cover brilliant film can have the virtual phenomenon of pasting with beta structure, thereby influences folding display device's structural stability, leads to folding display device to damage easily.
Moreover, with the development of display technology, the number of flip-chip films in the foldable display device is increasing, and therefore, if the existing folding structure is continuously adopted, the probability of damage to the foldable display device is further increased, and the use experience of a user is affected.
The application provides a folding structure and folding display device aims at solving the technical problem in the prior art.
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 application provides a folding structure, and a schematic structural diagram of the folding structure is shown in fig. 1, a top view of the folding structure shown in fig. 1 is shown in fig. 2, and an enlarged schematic diagram at a position a of the folding structure shown in fig. 1 is shown in fig. 3. The folding structure 100 is located between the flexible display panel 200 and the circuit element 600 of the folding display device, and the folding structure 100 includes:
a first supporter 10, a second supporter 20, and a bendable part 30 between the first supporter 10 and the second supporter 20;
the second support portion 20 includes a flat plate sub-portion 21 and a protruding sub-portion 22, the protruding sub-portion 22 is located on a side of the flat plate sub-portion 21 away from the bendable portion 30, and a shape of the protruding sub-portion 22 matches a shape of a bonding area of the flexible display panel 200 in the foldable display device and/or a bonding area of the flip-chip film 300 in the foldable display device.
In the folding structure 100 provided in the embodiment of the application, since the protruding sub-portion 22 is disposed at one end of the second support portion 20, and the first curved surface 223 of the protruding sub-portion 22 matches with the shape of the binding region of the flexible display panel 200 in the folding display device and/or the binding region of the flip-chip film 300 in the folding display device, the first curved surface 223 of the protruding sub-portion 22 is attached to the binding region of the flexible display panel 200 in the folding display device and/or the binding region of the flip-chip film 300 in the folding display device, so that the protruding sub-portion 22 can effectively support the binding region of the flexible display panel 200 and/or the binding region of the flip-chip film 300, and further can improve the structural stability of the folding display device, and can reduce the damage probability of the folding display device.
In the embodiment of the present application, the foldable structure 100 is provided with a second supporting portion 20 at an end of the bendable portion 30 away from the first supporting portion 10, and the protruding sub-portion 22 of the second supporting portion 20 is located at a side of the flat sub-portion 21 away from the bendable portion 30, that is, the protruding sub-portion 22 is located at an end of the foldable structure 100.
Moreover, since the first curved surface 223 of the convex sub-portion 22 is matched with the shape of the binding region of the flexible display panel 200 in the foldable display device and/or the binding region of the flip-chip 300 in the foldable display device, the first curved surface 223 of the convex sub-portion 22 can be attached to the binding region of the flexible display panel 200 in the foldable display device and/or the binding region of the flip-chip 300 in the foldable display device, so that the problem of virtual attachment of the convex sub-portion 22 to the binding region of the flexible display panel 200 and/or the binding region of the flip-chip 300 can be avoided, the convex sub-portion 22 can effectively support the binding region of the flexible display panel 200 and/or the binding region of the flip-chip 300, and the connection strength of the convex sub-portion 22 to the binding region of the flexible display panel 200 and/or the binding region of the flip-chip 300 can be ensured, and then can improve folding display device's structural stability, can also reduce folding display device's damage probability. In the embodiment of the present application, the end refers to both end portions of each component in the left-to-right direction in fig. 1.
It should be noted that, in the embodiment of the present application, the first supporting portion 10, the second supporting portion 20 and the bendable portion 30 of the foldable structure 100 are integrally manufactured, that is, the foldable structure 100 is an integral structure, such an arrangement can improve the integrity of the foldable structure 100, and ensure the reliability of connection between the first supporting portion 10, the second supporting portion 20 and the bendable portion 30, so as to improve the structural stability of the foldable structure 100, further improve the structural stability of the foldable display device, and further reduce the damage probability of the foldable display device.
It is understood by those skilled in the art that the first support 10, the second support 20 and the bendable part 30 of the foldable structure 100 may be separately manufactured and then the first support 10, the second support 20 and the bendable part 30 are connected, so that the first support 10, the second support 20 and the bendable part 30 are made of different materials, respectively, and thus the manufacturing cost of the foldable structure 100 may be reduced. Moreover, the first supporting portion 10, the second supporting portion 20 and the bendable portion 30 may be made of more suitable materials according to different requirements of different components or different application scenarios, so that the application scenarios of the folding structure 100 may be improved.
It should be noted that in the embodiment of the present application, as shown in fig. 1, for convenience of explaining the structure of the foldable structure 100, the dashed lines are used to demarcate the structures of the first supporting portion 10, the second supporting portion 20 and the bendable portion 30, and the dashed lines in fig. 1 do not exist in the product of the foldable structure 100.
It is understood by those skilled in the art that, in the folding structure 100 provided in the embodiment of the present application, the arrangement position of the convex sub-portion 22 in the second supporting portion 20 is not limited to the form shown in fig. 1, and those skilled in the art can determine the arrangement position of the convex sub-portion 22 and the arrangement position of the first curved surface 223 in the convex sub-portion 22 according to actual requirements, so that the convex sub-portion 22 can be attached to the bonding area of the flexible display panel 200 and/or the bonding area of the flip-chip film 300.
In one embodiment of the present application, as shown in fig. 1, in a cross section perpendicular to the second support part 20, the thickness of the convex sub-part 22 is gradually reduced in a direction approaching the flat sub-part 21.
In the binding process, both the binding region of the flexible display panel 200 and the binding region of the flip-chip film 300 are bent to form an arc-shaped portion, and the curvature of the arc-shaped portion is gradually reduced in a direction in which the concave side of the arc-shaped portion is far away from the convex side of the arc-shaped portion.
Therefore, in the embodiment of the present application, in the cross section perpendicular to the second support portion 20, the thickness of the convex sub-portion 22 is gradually decreased along the direction approaching the flat plate sub-portion 21, that is, the thickness of the end of the convex sub-portion 22 away from the flat plate sub-portion 21 is greater than the thickness of the end of the convex sub-portion 22 approaching the flat plate sub-portion 21, so that the shape of the convex sub-portion 22 matches the shape of the binding region of the flexible display panel 200 and the binding region of the flip-chip 300, the problem of the virtual attachment of the convex sub-portion 22 to the binding region of the flexible display panel 200 and/or the binding region of the flip-chip 300 can be avoided, so that the convex sub-portion 22 can effectively support the binding region of the flexible display panel 200 and/or the binding region of the flip-chip 300, the connection strength of the convex sub-portion 22 to the binding region supporting, and thus the structural stability of the folding display device can be enhanced.
It should be noted that in the embodiment of the present application, under the requirement that the protruding sub-portion 22 supports the bonding area of the flexible display panel 200 and/or the bonding area of the flip-chip film 300, the protruding sub-portion 22 may be configured to be a hollow structure, so as to reduce the weight of the folding structure 100, reduce the weight of the folding display device, facilitate the use of the user, and improve the use experience of the user.
In one embodiment of the present application, as shown in fig. 3, which is an enlarged schematic view at a of the folding structure shown in fig. 1, the convex sub-portion 22 includes a first surface 221 and a second surface 222, and one side of the first curved surface 223 is connected to the first surface 221 and the other side is connected to the second surface 222; the first surface 221 and the second surface 222 are disposed opposite to each other, and in a cross section perpendicular to the second support member 20, the first surface 221 extends from the convex sub-portion 22 toward the direction approaching the flat sub-portion 21 and gradually approaches the second surface 222.
In the embodiment of the present application, the protrusion sub-portion 22 includes a first surface 221, a first curved surface 223, and a second surface 222, which are connected in sequence, the first surface 221, the first curved surface 223, and the second surface 222 enclose a partial contour line of the protrusion sub-portion 22, the first surface 221 and the second surface 222 are disposed opposite to each other, and in a cross section perpendicular to the second support member 20, the first surface 221 extends from the protrusion sub-portion 22 to a direction approaching the flat plate sub-portion 21 and gradually approaches the second surface 222.
Therefore, the thickness of the protruding sub-portion 22 at the end away from the flat sub-portion 21 is greater than the thickness of the protruding sub-portion 22 at the end close to the flat sub-portion 21, so that the shape of the protruding sub-portion 22 matches the shape of the bonding area of the flexible display panel 200 and the bonding area of the flip-chip film 300, the problem of virtual attachment between the protruding sub-portion 22 and the bonding area of the flexible display panel 200 and/or the bonding area of the flip-chip film 300 can be avoided, the protruding sub-portion 22 can effectively support the bonding area of the flexible display panel 200 and/or the bonding area of the flip-chip film 300, the connection strength between the protruding sub-portion 22 and the bonding area supporting the flexible display panel 200 and/or the bonding area of the flip-chip film 300 can be ensured, and the.
Moreover, the shapes of the bonding region of the flexible display panel 200 and the bonding region of the flip-chip film 300 both include curved surfaces, and a flat-plate-type folding structure in the prior art, that is, a top surface or a bottom surface of the folding structure in the prior art, has an edge angle at the edge joint with the side surface of the folding structure, which causes the curved surface of the bonding region of the flexible display panel 200 and the curved surface of the bonding region of the flip-chip film 300 to be difficult to completely fit with the edge angle of the folding structure, and causes the virtual fit between the bonding region part of the flexible display panel 200 and the bonding region part of the flip-chip film 300 and the folding structure, thereby easily causing the problem that the bonding region part of the flexible display panel 200 and the bonding region part of the flip-chip film 300 will fall off from the folding.
In contrast, in the embodiment of the present application, the protrusion portion 22 includes the first curved surface 223, the first curved surface 223 matches with the curved surface of the bonding region of the flexible display panel 200 and the curved surface of the bonding region of the flip-chip film 300, so that the curved surface of the bonding area of the flexible display panel 200 and the curved surface of the bonding area of the flip-chip film 300 are completely attached to the first curved surface 223 of the protrusion part 22, thereby preventing the bonding area of the flexible display panel 200 and the bonding area of the flip-chip film 300 from being virtually attached to the folding structure 100, the convex sub-portion 22 can effectively support the binding region of the flexible display panel 200 and the binding region of the flip-chip film 300, and the connection strength between the convex sub-portion 22 and the binding region supporting the flexible display panel 200 and the binding region of the flip-chip film 300 can be ensured, so that the structural stability of the foldable display device can be enhanced.
In one embodiment of the present application, the included angle θ between the first surface 221 and the second surface 222 ranges from 0 to 70 °. In the embodiment of the present application, the included angle θ includes an end value of 70 °.
It should be noted that, in the embodiment of the present application, as shown in fig. 3, for convenience of describing the included angle θ between the first surface 221 and the second surface 222, a dashed line parallel to the second surface 222 is used to indicate the included angle θ, and the dashed line in fig. 3 does not exist in the product of the actual folding structure 100. Alternatively, as shown in fig. 4, the angle θ between the first surface 221 and the second surface 222 of the convex driver part 22 in the folded structure 100 is 43 °; as shown in fig. 5, the angle θ between the first surface 221 and the second surface 222 of the convex driver part 22 in the folded structure 100 is 69 °.
In one embodiment of the present application, the radius of curvature of the first curved surface 223 is in the range of 0.3-0.7 mm. In the embodiment of the present application, the radius of curvature of the first curved surface 223 includes 0.3 mm and 0.7 mm.
The specific degree of the included angle θ between the first surface 221 and the second surface 222 and the specific value of the curvature radius of the first curved surface 223 can be selected by those skilled in the art according to actual requirements.
In one embodiment of the present application, one end of the protrusion portion 22 is connected to the flat plate portion 21, and the extending direction of the other end has a predetermined angle with the extending direction of the flat plate portion 21.
In the embodiment of the present application, as shown in fig. 6 to 9, one end of the convex sub-portion 22 is connected to the flat sub-portion 21, and the extending direction of the other end has a set angle with the extending direction of the flat sub-portion 21, so that the cross-sectional shape of the convex sub-portion 22 is an arc in a cross-section perpendicular to the second supporting member 20, and optionally, as shown in fig. 6 to 9, the cross-sectional shape of the convex sub-portion 22 is approximately a reverse C-shape. The quality of the convex sub-portion 22 can be effectively reduced by the arrangement, so that the quality of the folding structure 100 can be reduced, the weight of the folding display device can be reduced, the use by a user is facilitated, and the use experience of the user is improved. Moreover, the convex sub-portions 22 can be formed by directly bending the flat plate structure, which can reduce the production flow of the folded structure 100 and improve the production efficiency of the folded structure 100.
Optionally, the radius of curvature of the curved convex sub-portion 22 ranges from 0.3 mm to 0.7 mm, and in the embodiment of the present application, the radius of curvature ranges from 0.3 mm to 0.7 mm.
In one embodiment of the present application, the convex sub-portion 22 includes a first portion 224 and a second portion 225 connected in series; the thickness of the first portion 224 is smaller than the thickness of the second portion 225 in the direction perpendicular to the convex sub-portion 22, and the thickness of the first portion 224 is smaller than the thickness of the flat sub-portion 21 in the direction perpendicular to the second support portion 20.
In the embodiment of the present application, as shown in fig. 8 and 9, the convex sub-portion 22 includes a first portion 224 and a second portion 225, the thickness of the first portion 224 is smaller than the thickness of the second portion 225, and the thickness of the first portion 224 is smaller than the thickness of the flat sub-portion 21 in the direction perpendicular to the second support portion 20. By setting the thickness of the first portion 224 to be smaller than the thickness of the adjacent second portion 225 and the thickness of the adjacent flat plate sub-portion 21, the convex sub-portion 22 can be formed by bending, and the inner surface of the first portion 224 can be prevented from being significantly wrinkled in the manufacturing process.
In one embodiment of the present application, the bendable part 30 includes at least two first bendable sub-portions 31 and a second bendable sub-portion 32 located between two adjacent first bendable sub-portions 31; in the folded state of the folding structure 100, the degree of bending of the second bendable sub-portion 32 is greater than the degree of bending of the first bendable sub-portion 31.
In the embodiment of the present application, as shown in fig. 1, fig. 2, and fig. 4 to fig. 10, the bendable portion 30 includes two first bendable sub-portions 31 and a second bendable sub-portion 32 located between the first bendable sub-portions 31, a maximum degree of the second bendable sub-portion 32 being bendable is greater than a maximum degree of the first bendable sub-portions 31, and a bending degree of the second bendable sub-portion 32 being greater than a bending degree of the first bendable sub-portions 31 when the folding structure 100 is in the folding state, so as to ensure a normal bending of the folding structure 100.
It is understood by those skilled in the art that the number and arrangement of the first bendable sub-portions 31 and the second bendable sub-portions 32 in the bendable part 30 are not limited to the form shown in fig. 2 or fig. 4-10, and those skilled in the art can determine the specific number and arrangement of the first bendable sub-portions 31 and the second bendable sub-portions 32 according to actual requirements.
In an embodiment of the present application, at least two openings are disposed in each of the first bendable sub-portion 31 and the second bendable sub-portion 32, and a distribution density of the openings in the second bendable sub-portion 32 is greater than a distribution density of the openings in the first bendable sub-portion 31.
In the embodiment of the present application, as shown in fig. 2, a plurality of openings are disposed in the first bendable sub-portion 31 and the second bendable sub-portion 32, and optionally, the openings are circular holes 311, during the bending process, the stress generated in the first bendable sub-portion 31 and the second bendable sub-portion 32 can be released through the circular holes 311, and the distribution density of the circular holes 311 in the second bendable sub-portion 32 is greater than the distribution density of the circular holes 311 in the first bendable sub-portion 31, so that the maximum degree to which the second bendable sub-portion 32 can be bent is greater than the maximum degree to which the first bendable sub-portion 31 can be bent.
Alternatively, as shown in fig. 2, all the openings in the first bendable sub-portion 31 and the second bendable sub-portion 32 are circular in a direction perpendicular to the folding structure 100, so that the manufacturing process of the folding structure 100 can be simplified and the manufacturing cost of the folding structure 100 can be reduced. Alternatively, a punching mechanism may be used to punch the circular hole 311 in the initial folded structure 100. It is understood by those skilled in the art that the shape of the opening is not limited to the circular shape shown in fig. 2, but may be an oval shape, a triangular shape, a square shape, a polygonal shape, etc., and the opening shapes of the first bendable sub-portion 31 and the second bendable sub-portion 32 may include various figures at the same time in the same folding structure 100.
In one embodiment of the present application, the first bendable sub-portion 31 is provided with a first hollow pattern, and the first hollow pattern includes at least two circular holes 311; the second bendable sub-portion 32 is provided with a second hollow pattern, the second hollow pattern includes at least two strip holes 321, and an extending direction of the strip holes 321 is perpendicular to a connecting line direction of the first bendable sub-portion 31 and the second bendable sub-portion 32.
In the embodiment of the present application, as shown in fig. 10, the first bendable sub-portion 31 is provided with a first hollow pattern, the first hollow pattern includes a plurality of circular holes 311, and in order to facilitate the release of stress in the first bendable sub-portion 31 during the bending process, the circular holes 311 in the first bendable sub-portion 31 are uniformly arranged. The second bendable sub-portion 32 is provided with a second hollow pattern, the second hollow pattern includes at least two strip holes 321, and an extending direction of the strip holes 321 is perpendicular to a connecting line direction of the first bendable sub-portion 31 and the second bendable sub-portion 32, so as to facilitate bending of the second bendable sub-portion 32. Similarly, in order to facilitate the release of the stress in the second bendable sub-portion 32 during the bending process, the plurality of bar holes 321 in the second bendable sub-portion 32 are also uniformly arranged. Those skilled in the art will appreciate that the length of the strip-shaped hole 321 can be determined according to actual requirements.
Alternatively, in the embodiment of the present application, the first supporter 10, the second supporter 20, and the bendable part 30 of the folding structure 100 may be separately manufactured, and then the first supporter 10, the second supporter 20, and the bendable part 30 may be connected. The first support part 10 and the second support part 20 are made of hard materials to ensure that the first support part 10 and the second support part 20 can support the flexible display panel 200 during the folding and bending process of the folding structure 100, and the first support part 10 and the second support part 20 can be made of stainless steel materials; the bendable portion 30 is made of a flexible material, so that the flexible display panel 200 can be bent, and the bendable portion 30 can be prevented from being punched to form a hole, so that the manufacturing process of the foldable structure 100 can be simplified, and the manufacturing cost of the foldable structure 100 can be reduced.
Based on the same inventive concept, embodiments of the present application provide a folding display apparatus, as shown in fig. 11 and 12, including: the flexible display panel 200, the flip chip 300, the circuit element 600 and the folding structure 100 provided by the above embodiments, the flexible display panel 200 and the flip chip 300 are electrically connected to the circuit element 600; the first curved surface 223 of the convex sub-portion 22 of the second support portion 20 in the folding structure 100 matches the shape of the bonding area of the flexible display panel 200 and/or the bonding area of the flip-chip film 300; the bonding area portion of the flexible display panel 200 and/or the bonding area portion of the flip-chip film 300 are attached to the two sides of the protrusion sub-portion 22 of the second support portion 20 in the folding structure 100.
Alternatively, as shown in fig. 11, which is a schematic structural diagram of a foldable display device, the flexible display panel 200 includes a bonding area portion 210 of the flexible display panel 200 and a portion 220 of the flexible display panel 200 except for the bonding area portion. The binding region portion 210 of the flexible display panel 200 is attached to two sides of the protrusion sub-portion 22 of the second support portion 20 in the folding structure 100, so that the protrusion sub-portion 22 can effectively support the binding region portion 210 of the flexible display panel 200, the structural stability of the folding display device can be improved, and the damage probability of the folding display device can be reduced.
Optionally, as shown in fig. 12, which is a schematic structural diagram of another foldable display device, the flexible display panel 200 is disposed at one side of the folding structure 100, the flip-chip film 300 is electrically connected to the flexible display panel 200, and a binding region of the flip-chip film 300 is attached to two sides of the protruding sub-portion 22 of the second support portion 20 in the folding structure 100, so that the protruding sub-portion 22 can effectively support the binding region of the flip-chip film 300, and thus the structural stability of the foldable display device can be improved, and the damage probability of the foldable display device can be reduced.
It should be noted that the foldable display device may be an electronic device such as a mobile phone, a tablet computer, a wearable device, an in-vehicle device, an Augmented Reality (AR)/Virtual Reality (VR) device, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), and the like, which have a folding function.
In one embodiment of the present application, the folding display device further includes: a cover plate 500 and a polarizing layer 400; the portion 220 of the flexible display panel 200 except for the binding region portion is attached to one side of the folding structure 100; the bonding area portion 210 of the flexible display panel 200 and/or the bonding area portion of the flip-chip film 300 are attached to at least a portion of the flat plate portion 21 of the second support portion 20 away from the cover plate 500; the polarizing layer 400 is located on the light emitting side of the flexible display panel 200, and the cover plate 500 is located on the side of the polarizing layer 400 away from the flexible display panel 200; the circuit element 600 is located on a side of the folding structure 100 away from the polarizing layer 400; in the direction perpendicular to the second support portion 20, the projection of the circuit element 600 at least partially overlaps the projection of the bonding area portion 210 of the flexible display panel 200 and/or the projection of the bonding area portion of the flip-chip film 300.
Alternatively, as shown in fig. 11, a portion 220 of the flexible display panel 200 excluding the binding region portion is attached to one side of the folding structure 100, and the binding region portion 210 of the flexible display panel 200 is attached to one side of at least a portion of the flat plate sub-portion 21 of the second support portion 20 away from the cover plate 500. I.e. the flexible display panel 200 partially surrounds the second support 20 of the folding structure 100. The polarizing layer 400 is located on the light emitting side of the flexible display panel 200, and the cover plate 500 is located on the side of the polarizing layer 400 away from the flexible display panel 200; the circuit element 600 is located at a side of the folding structure 100 away from the polarizing layer 400, and a projection of the circuit element 600 at least partially overlaps a projection of the binding area portion 210 of the flexible display panel 200 in a direction perpendicular to the second support 20.
In the embodiment of the present application, in order to avoid affecting the structure of the circuit component 600 during the folding process, the circuit component 600 is located on one side of the flat plate sub-portion 21 of the second support portion 20 in the folding structure 100, and the projection of the circuit component 600 is covered by the projection of the flat plate sub-portion 21 in the direction perpendicular to the second support portion 20.
Alternatively, as shown in fig. 12, 13 and 15, the flexible display panel 200 is attached to one side of the folding structure 100; the bonding region of the flip chip 300 is attached to at least a portion of the flat plate portion 21 of the second support portion 20 away from the cover plate 500; the polarizing layer 400 is located on the light emitting side of the flexible display panel 200, and the cover plate 500 is located on the side of the polarizing layer 400 away from the flexible display panel 200; the circuit element 600 is located on a side of the folding structure 100 away from the polarizing layer 400, and in a direction perpendicular to the second supporting portion 20, a projection of the circuit element 600 at least partially overlaps a projection of the bonding area portion of the flip-chip film 300, and the circuit element 600 is electrically connected to the flip-chip film 300.
In the embodiment of the present application, the Circuit element 600 includes a Flexible Circuit element such as MFPC (Main Flexible Circuit), TFPC (Touch Flexible Circuit), and a PCB (Printed Circuit Board).
Alternatively, as shown in fig. 14 and 16, the flexible display panel 200 is attached to one side of the folding structure 100; the bonding region of the flip chip 300 is at least partially attached to the protrusion 22 of the second support portion 20; the polarizing layer 400 is located on the light emitting side of the flexible display panel 200, and the cover plate 500 is located on the side of the polarizing layer 400 away from the flexible display panel 200; the circuit element 600 is located on one side of the folding structure 100 away from the polarizing layer 400, and in a direction perpendicular to the second supporting portion 20, a projection of the circuit element 600 overlaps at least a portion of a projection of the bonding area of the flip-chip film 300, at least a portion of the flip-chip film 300 is attached to one side of the circuit element 600 away from the polarizing layer 400, and the circuit element 600 is electrically connected to the flip-chip film 300. When the circuit element 600 is a PCB, since the thickness of the PCB is often greater than that of flexible circuit elements such as MFPC, TFPC, etc., in order to ensure the attachment of the circuit element 600 to the folding structure 100 and the flip-chip film 300, in the embodiment of the present application, one side of the circuit element 600 needs to be completely attached to the folding structure 100, so as to avoid a gap between the circuit element 600 and the folding structure 100 and ensure the connection strength between the circuit element 600 and the folding structure 100.
It should be noted that, in the embodiment of the present application, as shown in fig. 11 to 16, for convenience of explaining the structure of the foldable display device, the respective structures defining the first supporting part 10, the second supporting part 20 and the bendable part 30 in the foldable structure 100 are divided by dotted lines, and the respective structures defining the flexible display panel 200 are divided by dotted lines, and the respective dotted lines in fig. 11 to 16 do not exist in the actual product of the foldable display device.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
in the folding structure 100 provided in the embodiment of the application, since the protruding sub-portion 22 is disposed at one end of the second support portion 20, and the first curved surface 223 of the protruding sub-portion 22 matches with the shape of the binding region of the flexible display panel 200 in the folding display device and/or the binding region of the flip-chip film 300 in the folding display device, the first curved surface 223 of the protruding sub-portion 22 is attached to the binding region of the flexible display panel 200 in the folding display device and/or the binding region of the flip-chip film 300 in the folding display device, so that the protruding sub-portion 22 can effectively support the binding region of the flexible display panel 200 and/or the binding region of the flip-chip film 300, and further can improve the structural stability of the folding display device, and can reduce the damage probability of the folding display device.
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.
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 herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
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 (11)
1. A folding structure between a flexible display panel and a circuit element of a folding display device, the folding structure comprising: the support comprises a first support part, a second support part and a bendable part positioned between the first support part and the second support part;
the second supporting portion comprises a flat plate sub-portion and a protruding sub-portion, the protruding sub-portion is located on one side, away from the bendable portion, of the flat plate sub-portion, the protruding sub-portion comprises a first curved surface, and the first curved surface is matched with the shape of a binding region of a flexible display panel in the folding display device and/or the shape of a binding region of a flip-chip film in the folding display device.
2. The folding structure of claim 1 wherein said convex subsection further includes a first surface and a second surface, one side of said first curved surface being connected to said first surface and the other side being connected to said second surface;
the first surface and the second surface are oppositely arranged, and in a section perpendicular to the second support, the first surface extends from the convex sub-portion to a direction close to the flat sub-portion and gradually approaches to the second surface.
3. The folding structure of claim 2 wherein the included angle between said first surface and said second surface is in the range of 0-70 °.
4. The folding structure of claim 1 wherein said first curved surface has a radius of curvature in the range of 0.3-0.7 mm.
5. The folding structure of claim 1, wherein one end of the protrusion portion is connected to the flat plate portion, and the extending direction of the other end of the protrusion portion has a predetermined angle with the extending direction of the flat plate portion.
6. The folding structure of claim 5, wherein said convex subsection includes a first portion and a second portion connected in series;
in the direction perpendicular to the convex sub-portion, the thickness of the first portion is smaller than that of the second portion, and the thickness of the first portion is smaller than that of the flat sub-portion in the direction perpendicular to the second supporting portion.
7. The foldable structure of claim 1, wherein the bendable portion comprises at least two first bendable sub-portions and a second bendable sub-portion located between two adjacent first bendable sub-portions;
the second bendable sub-portion is bent to a greater degree than the first bendable sub-portion when the folding structure is in a folded state.
8. The foldable structure of claim 7, wherein the first bendable sub-portion and the second bendable sub-portion each have at least two openings therein, and the distribution density of the openings in the second bendable sub-portion is greater than the distribution density of the openings in the first bendable sub-portion.
9. The folding structure of claim 7, wherein the first bendable sub-portion is provided with a first cutout pattern, the first cutout pattern comprising at least two circular holes;
the second bendable subpart is provided with a second hollow pattern, the second hollow pattern comprises at least two strip holes, and the extending direction of the strip holes is perpendicular to the connecting direction of the first bendable subpart and the second bendable subpart.
10. A folding display device, comprising: a flexible display panel, a flip-chip, a circuit component and the folding structure of any one of claims 1-9, the flexible display panel and the flip-chip being electrically connected to the circuit component;
the first curved surface of the convex sub-part of the second supporting part in the folding structure is matched with the shape of the binding area of the flexible display panel and/or the binding area of the chip on film; and the binding area part of the flexible display panel and/or the binding area part of the chip on film are attached to two sides of the convex subpart.
11. The folding display device of claim 10, further comprising a cover plate and a polarizing layer;
the part of the flexible display panel except the binding region part is attached to one side of the folding structure; the bonding area part of the flexible display panel and/or the bonding area part of the chip on film are attached to one side, far away from the cover plate, of at least part of the flat plate sub-part of the second supporting part;
the polarizing layer is positioned on the light emergent side of the flexible display panel, and the cover plate is positioned on one side of the polarizing layer, which is far away from the flexible display panel; the circuit element is positioned on one side of the folding structure far away from the polarizing layer; in the direction perpendicular to the second supporting portion, the projection of the circuit element is at least partially overlapped with the projection of the binding area part of the flexible display panel and/or the projection of the binding area part of the chip on film.
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| CN202110372872.0A CN113096536B (en) | 2021-04-07 | 2021-04-07 | Folding structure and folding display device |
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| CN202110372872.0A CN113096536B (en) | 2021-04-07 | 2021-04-07 | Folding structure and folding display device |
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| CN113096536B (en) | 2023-04-25 |
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