CN113707029A - Flexible display module and manufacturing method thereof - Google Patents
Flexible display module and manufacturing method thereof Download PDFInfo
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- CN113707029A CN113707029A CN202111049856.4A CN202111049856A CN113707029A CN 113707029 A CN113707029 A CN 113707029A CN 202111049856 A CN202111049856 A CN 202111049856A CN 113707029 A CN113707029 A CN 113707029A
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- 238000010030 laminating Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
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- 239000004642 Polyimide Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
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- 238000004080 punching Methods 0.000 description 1
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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
Abstract
The application relates to the technical field of display, the embodiment of the application provides a flexible display module and a manufacturing method thereof, a flexible panel comprises a first part, a second part and a bending part for connecting the first part and the second part, at least one first mark is arranged at a preset position on the flexible panel, a functional film layer is arranged by taking the position of the first mark on the non-display side surface of the flexible panel as a reference, the functional film layer comprises a first film layer positioned on the first part and a second film layer positioned on the second part, and the first film layer and the second film layer are mutually independent.
Description
Technical Field
The application relates to the technical field of display, in particular to a flexible display module and a manufacturing method thereof.
Background
In the related art, in order to obtain a larger screen ratio of the display screen, the bending radius of the bending region needs to be continuously reduced. And the smaller bending radius is easy to cause the circuit damage of the bending area in the bending process.
Disclosure of Invention
Accordingly, it is desirable to provide a flexible display module and a method for fabricating the same to reduce the damage to the circuit in the bending region during the bending process.
According to a first aspect of the present application, an embodiment of the present application provides a method for manufacturing a flexible display module, where the method includes:
setting at least one first mark at a preset position on the flexible panel; wherein the flexible panel comprises a first portion, a second portion, and a bend portion connecting the first portion and the second portion;
covering a functional film layer by taking the position of the first mark on the non-display side surface of the flexible panel as a reference; wherein the functional film layer comprises a first film layer positioned on the first part and a second film layer positioned on the second part, and the first film layer and the second film layer are independent from each other.
In one embodiment, the overlaying of the functional film layer with the position of the first mark on the non-display side surface of the flexible panel as a reference specifically includes:
acquiring position information of the first mark relative to the flexible panel;
determining the target position of the functional film layer attached to the flexible panel according to the position information of the first mark;
attaching the functional film layer to the target position; the first film layer is arranged on the non-display side surface of the first part in a covering mode, and the second film layer is arranged on the non-display side surface of the second part in a covering mode.
In one embodiment, the acquiring the position information of the first mark relative to the flexible panel specifically includes:
acquiring first image information of a non-display side of the flexible panel provided with at least one first mark;
and acquiring the position information of the first mark relative to the flexible panel according to the first image information.
In one embodiment, the determining the target position where the functional film layer is attached to the flexible panel according to the position information of the first mark specifically includes:
mapping the position information into a coordinate system established based on the flexible panel to determine two-dimensional coordinates of the first marker in the coordinate system;
and acquiring two-dimensional coordinates of each point in the first part and the second part in the coordinate system according to the two-dimensional coordinates of the first mark in the coordinate system so as to determine the target position of the functional film layer attached to the flexible panel.
In one embodiment, the determining the target position where the functional film layer is attached to the flexible panel according to the position information of the first mark specifically includes:
mapping the position information into a coordinate system established based on the flexible panel to determine two-dimensional coordinates of the first marker in the coordinate system;
and acquiring the central coordinate of the flexible panel according to the two-dimensional coordinate of the first mark in the coordinate system so as to determine the target position of the functional film layer attached to the flexible panel.
In one embodiment, the first marks are arranged in two numbers, and the two first marks are arranged in central symmetry with the center of the flexible panel.
In one embodiment, the attaching the functional film layer to the target site specifically includes:
acquiring second image information of a notch in the functional film layer; the gap is formed based on a spacing between the first film layer and the second film layer;
determining the central coordinate of the functional film layer according to the second image information;
and aligning the center of the functional film layer with the center of the flexible panel, and attaching the functional film layer to the flexible panel.
In one embodiment, after the covering of the functional film layer with reference to the position of the first mark on the non-display side surface of the flexible panel, the method further includes:
bending the bent portion such that the first portion and the second portion are overlapped in a direction perpendicular to a non-display side surface of the flexible panel.
In one embodiment, the bending the bent portion so that the first portion and the second portion are overlapped in a direction perpendicular to the non-display side surface of the flexible panel specifically includes:
respectively arranging at least one second mark on the surfaces of one sides of the first film layer and the second film layer far away from the flexible panel;
bending the bent portion with reference to a position of the second mark on the first film layer and the second film layer such that the first portion and the second portion are overlapped in a direction perpendicular to a non-display side surface of the flexible panel.
In one embodiment, the first film layer and the second film layer are arranged at intervals, and the pair of spaced areas between the first film layer and the second film layer are located at the bending part.
In one embodiment, the first mark is disposed at a connection of the bending portion and the first portion; alternatively, the first and second electrodes may be,
the first mark is arranged at the joint of the bending part and the second part.
In one embodiment, the first marks are arranged in three along the length direction of the flexible panel, and the distance between the adjacent first marks is 20 micrometers.
In one embodiment, the first marks are arranged in five along the length direction of the flexible panel, and the distance between the adjacent first marks is 10 micrometers.
In one embodiment, the first indicia comprises a cross-shaped indicia or a linear indicia.
According to a second aspect of the present application, an embodiment of the present application provides a flexible display module manufactured according to the above method for manufacturing a flexible display module.
In the flexible display module and the manufacturing method thereof, the flexible panel comprises a first part, a second part and a bending part for connecting the first part and the second part, at least one first mark is arranged at a preset position on the flexible panel, a functional film is arranged by taking the position of the first mark on the non-display side surface of the flexible panel as a reference, the functional film comprises a first film positioned on the first part and a second film positioned on the second part, and the first film and the second film are independent of each other.
Drawings
Fig. 1 is a schematic structural diagram of a flexible display module according to an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a method for manufacturing a flexible display module according to an embodiment of the present disclosure;
FIG. 3 is a schematic flow chart illustrating a method for fabricating a flexible display module according to another embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a flexible panel with a first mark disposed thereon according to an embodiment of the present application;
FIG. 5 is a schematic view of a flexible panel with a first indicia disposed thereon according to another embodiment of the present application;
FIG. 6 is a schematic diagram of a flexible panel with two first indicia disposed thereon according to an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a functional film according to an embodiment of the present disclosure;
FIG. 8 is a schematic view of a functional film at another viewing angle in an embodiment of the present application;
FIG. 9 is a schematic flow chart illustrating a method for fabricating a flexible display module according to yet another embodiment of the present application;
FIG. 10 is a schematic structural diagram of a flexible display module according to yet another embodiment of the present application;
FIG. 11 is a schematic view of a flexible panel with a first indicia disposed thereon according to yet another embodiment of the present application;
fig. 12 is a schematic structural diagram of a flexible display module according to another embodiment of the present application.
Notation of elements for simplicity:
100: the flexible panel 110: the first part
120: second portion 130: bent portion
200: first mark
300: the functional film layer 310: first film layer
320: second film layer 330: gap
301: adhesive-free surface 302: surface with glue
400: release film
500: second mark
x: length direction y: width direction of the sheet
d 1: first distance d 2: second distance
d 3: length d 4: offset distance
P: center Q of flexible panel 100: center of the functional film layer 300
R: center of the gap 330
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to provide a thorough understanding of embodiments of the present application. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. The embodiments of this application can be implemented in many different ways than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the invention and therefore the embodiments of this application are not limited to the specific embodiments disclosed below.
It is to be understood that the terms "first," "second," and the like as used herein may be used herein to describe various terms of art, and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features being indicated. However, these terms are not intended to be limiting unless specifically stated. These terms are only used to distinguish one term from another. For example, the first portion and the second portion are different portions, the first film layer and the second film layer are different film layers, the first mark and the second mark are different marks, and the first image information and the second image information are different image information without departing from the scope of the present application. In the description of the embodiments of the present application, "a plurality" or "a plurality" means at least two, e.g., two, three, etc., unless specifically defined otherwise.
In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.
In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely below the second feature, or may simply mean that the first feature is at a lesser level than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
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 application belongs. The terminology used in the description of the present application in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
To facilitate understanding of technical solutions of the embodiments of the present application, before describing specific embodiments of the present application, some technical terms in the technical field to which the embodiments of the present application belong are briefly explained.
An OLED (Organic Light-Emitting Diode), also called an Organic electroluminescent Display, an Organic Light-Emitting semiconductor (OLED). The OLED is a current-type organic light emitting device, and emits light by injection and recombination of carriers, and the intensity of light emission is proportional to the injected current. Under the action of an electric field, holes generated by an anode and electrons generated by a cathode move, are respectively injected into a hole transport layer and an electron transport layer, and migrate to a light emitting layer. When the two meet at the light emitting layer, energy excitons are generated, thereby exciting the light emitting molecules to finally generate visible light.
In the OLED display technology, one end of a flexible panel of an OLED panel is bent to the back of a display, so that a narrow bezel of a non-display area is achieved.
As background art, in the related art, in order to obtain a larger screen ratio for a display screen, it is necessary to continuously decrease the bending radius of the bending region. And the smaller bending radius is easy to cause the circuit damage of the bending area in the bending process. In addition, since the flexible panel itself is thin, the flexible panel is easily tilted when being bent, and the shape of the bent portion after being bent cannot be ensured, and the irregular shape of the bent portion also causes local stress concentration and breakage, thereby affecting the overall appearance effect. Therefore, in order to reduce the circuit damage of the bending region and obtain a good shape of the bent portion after bending, a functional film layer is usually attached to the non-display side surface of the flexible panel to serve as a supporting material for the non-display side surface of the flexible panel, which not only can enhance the stiffness of the whole flexible panel, but also can reduce the circuit damage of the bending region.
Fig. 1 shows a schematic structural diagram of a flexible display module in an embodiment of the present application.
Further research by the inventors of the present application shows that, since the functional film 300 is disposed on the non-display side surface 101 of the flexible panel 100, during the bending process, the portion of the functional film 300 located in the bending region may bear a larger bending stress, and there is also a risk of line damage. Thus, as shown in fig. 1, the present embodiment provides a flexible display module, which includes a flexible panel 100 and a functional film layer 300, where the flexible panel 100 includes a first portion 110, a second portion 120, and a bending portion 130 connecting the first portion 110 and the second portion 120, the functional film layer 300 includes a first film layer 310 opposite to the first portion 110 and a second film layer 320 opposite to the second portion 120, and the first film layer 310 and the second film layer 320 are independent of each other. By not covering the functional film 300 on the bending portion 130, the risk of line damage caused by the portion of the functional film 300 located in the bending region during the bending process is avoided.
However, as further studied by the inventor of the present application, in the actual production, after the flexible panel 100 is bent, the second film layer 320 and the first film layer 310 are prone to fail to adhere to each other according to the predetermined adhering position, and a misalignment is formed, so that stress concentration is caused, and the circuit of the bent portion 130 of the flexible panel 100 is damaged.
Fig. 2 is a schematic flow chart illustrating a manufacturing method of a flexible display module according to an embodiment of the present application.
In view of the above existing problems, an embodiment of the present application provides a method for manufacturing a flexible display module, as shown in fig. 2, the method includes the following steps:
s101, setting at least one first mark 200 at a preset position on the flexible panel 100; wherein the flexible panel 100 comprises a first portion 110, a second portion 120, and a bent portion 130 connecting the first portion 110 and the second portion 120;
specifically, the flexible panel 100 may be made of a PI (polyimide) film because polyimide has good thermal stability and is suitable for an array process. The first mark 200 may be fabricated in an array process, for example, by photolithography, etching, and the like, which is not limited in this embodiment.
The position of the first mark 200 is determined according to a preset position, the preset position may be determined according to each boundary line of the first portion 110, the second portion 120 and the bending portion 130 in the flexible panel 100, or may be determined according to a certain preset distance from each boundary line, and the preset distance may be correspondingly designed according to actual use requirements. For example, the position of the first mark 200 may be disposed at a boundary between the first portion 110 and the bending portion 130, or at a boundary between the second portion 120 and the bending portion 130, or at the first portion 110, and a preset distance is provided from the boundary between the first portion 110 and the bending portion 130, which is not specifically limited in the embodiment of the present application. Of course, there may be one or two first marks 200, for example, there may be one first mark 200 disposed on the first portion 110, another first mark 200 disposed on the second portion 120, and when there are two first marks 200, there are two corresponding preset positions, that is, when there are a plurality of first marks 200, the number of preset positions corresponds to one of the plurality of first marks 200, and this is not limited in this embodiment of the application.
S102, covering a functional film layer 300 by taking the position of the first mark 200 on the non-display side surface 101 of the flexible panel 100 as a reference; the functional film 300 includes a first film 310 on the first portion 110 and a second film 320 on the second portion 120, and the first film 310 and the second film 320 are independent of each other.
Specifically, since the first mark 200 is disposed at the predetermined position, the position information of the first mark 200 can be obtained, and thus the first film 310 and the second film 320 are respectively attached to the first portion 110 and the second portion 120 as the reference object for covering the functional film 300. Specifically, in some embodiments, the pair of first films 310 is located in the first portion 110 and the size of the first film 310 is the same as the size of the first portion 110, and the pair of second films 320 is located in the second portion 120 and the size of the second film 320 is the same as the size of the second portion 120. It should be noted that, the first film layer 310 and the second film layer 320 may be simultaneously attached based on the position of the first mark 200 on the non-display side surface 101 of the flexible panel 100, the first film layer 310 may be attached first and then the second film layer 320 may be attached, the second film layer 320 may be attached first and then the first film layer 310 may be attached, which is not specifically limited in the embodiment of the present disclosure.
It should be noted that, in some embodiments, the materials of the first film 310 and the second film 320 are identical, and the first film 310 and the second film 320 may be formed by a single functional film 300, in this case, before step S102 is performed, the first film 310 and the second film 320 which are independent of each other are formed by cutting out the region of the functional film 300 located at the bending portion 130, for example, before the functional film 300 is attached, a corresponding punching step is performed on the functional film 300 to cut out an unnecessary region. Of course, in the case that the materials of the first film layer 310 and the second film layer 320 are the same, the first film layer 310 and the second film layer 320 may also be composed of different functional film layers 300, as long as the first film layer 310 is attached to the first portion 110 and the second film layer 320 is attached to the second portion 120, which is not specifically limited in the embodiment of the present application.
From this, through set up first mark 200 before the laminating, improved the laminating precision of functional film layer 300 laminating on flexible panel 100, and then improved the precision of buckling in the follow-up bending process, reduced the damage that causes the circuit in district of buckling.
FIG. 3 is a schematic flow chart illustrating a method for manufacturing a flexible display module according to another embodiment of the present disclosure; fig. 4 shows a schematic structural diagram of the flexible panel 100 provided with the first marker 200 in an embodiment of the present application; FIG. 5 shows a schematic view of a flexible panel 100 provided with a first marker 200 in another embodiment of the present application; fig. 4 and 5 are top views of fig. 1, as viewed from the perspective of fig. 1.
As shown in fig. 3, an embodiment of the present application provides a method for manufacturing a flexible display module, where the method includes the following steps:
s201, setting at least one first mark 200 at a preset position on the flexible panel 100; wherein the flexible panel 100 comprises a first portion 110, a second portion 120, and a bent portion 130 connecting the first portion 110 and the second portion 120;
specifically, reference may be made to the contents of some of the foregoing embodiments, which are not described herein again.
S202, acquiring the position information of the first mark 200 relative to the flexible panel 100;
specifically, the position information of the first mark 200 relative to the flexible panel 100 may be obtained by imaging the flexible panel 100, and the imaging may be scanning, taking a picture using a CCD (Charge Coupled Device) camera, and the like, which is not specifically limited in this embodiment of the application.
In some embodiments, acquiring the position information of the first marker 200 relative to the flexible panel 100 specifically includes acquiring first image information of the non-display side of the flexible panel 100 provided with at least one first marker 200, and acquiring the position information of the first marker 200 relative to the flexible panel 100 according to the first image information. That is, when taking a picture using a CCD (Charge Coupled Device) camera, the position information of the first marker 200 may be captured by acquiring image information of the flexible panel 100.
S203, determining the target position of the functional film layer 300 attached to the flexible panel 100 according to the position information of the first mark 200;
specifically, for example, since the position information of the first mark 200 and the information of the preset position are known, that is, the boundary information of the regions of the first portion 110, the second portion 120, and the bent portion 130 can be determined. For example, since the flexible panel 100 and the functional film layer 300 are disposed in a relative position, the center coordinates of the flexible panel 100 can be calculated based on the position information of the first mark 200, that is, the centers of the two can be used for alignment. Thus, the position where the first film layer 310 is attached to the first portion 110 and the position where the second film layer 320 is attached to the second portion 120 can be determined.
Specifically, in some embodiments, the position information is mapped into a coordinate system established based on the flexible panel 100 to determine two-dimensional coordinates of the first marker 200 in the coordinate system, and two-dimensional coordinates of each point in the first portion 110 and the second portion 120 in the coordinate system are obtained according to the two-dimensional coordinates of the first marker 200 in the coordinate system to determine a target position where the functional film 300 is attached to the flexible panel 100. That is, since the plane on which the flexible panel 100 is located can be determined, the position information of the first marker 200 can be obtained, and the coordinate system is the plane coordinate system of the plane on which the flexible panel 100 is located. The process of mapping the position information into the coordinate system established based on the flexible panel 100 is to determine the two-dimensional coordinates of the first marker 200 in the coordinate system. By combining the information of the preset position and the two-dimensional coordinates of the first mark 200, a determinable mapping relationship exists between each of the first portion 110 and the second portion 120 and the first mark 200, and the two-dimensional coordinates of each of the first portion 110 and the second portion 120 in the coordinate system can be determined through the mapping relationship, that is, the boundary information of the areas of the first portion 110, the second portion 120, and the bending portion 130 can be determined, that is, the positions of the first portion 110 and the second portion 120 are determined, so that the target positions of the first film layer 310 and the second film layer 320 attached to the flexible panel 100 can be determined.
For example, as shown in fig. 4, fig. 4 is a schematic view of the top-down view of fig. 1, when the first marks 200 are respectively disposed at the boundary between the first portion 110 and the bending portion 130 and the boundary between the second portion 120 and the bending portion 130, the coordinates of each point at the boundary between the first portion 110 and the bending portion 130 and the coordinates of each point at the boundary between the second portion 120 and the bending portion 130 can be determined and obtained according to the two-dimensional coordinates of the first marks 200 in the coordinate system, and the first film layer 310 and the second film layer 320 can be respectively aligned to the corresponding boundaries for bonding according to the coordinates of each point at each boundary. In the exemplary case shown in fig. 4, two first marks 200 may be disposed at intervals along the width direction y at the boundary between the first portion 110 and the bending portion 130 and at the boundary between the second portion 120 and the bending portion 130, respectively, and since a straight line may be determined between the two points, the coordinates of each point at the boundary between the first portion 110 and the bending portion 130 and the coordinates of each point at the boundary between the second portion 120 and the bending portion 130 may be determined. Of course, in another embodiment, two first marks 200 may be provided at intervals along the width direction y only at the boundary between the first portion 110 and the bent portion 130, so that the coordinates of each point at the boundary between the first portion 110 and the bent portion 130 may be determined as described above, and then the coordinates of each point at the boundary between the second portion 120 and the bent portion 130 may be obtained by combining the determined coordinates of each point at the boundary between the first portion 110 and the bent portion 130 according to the information of the preset position (for example, the length d3 of the bent portion 130 in the length direction x). For another example, as shown in fig. 5, fig. 5 is a schematic top view of fig. 1, when two first marks 200 are spaced apart in the width direction y in the first portion 110, and the intersection of the two first marks 200 and the first portion 110 and the bent portion 130 has a first distance d1, when two first marks 200 are spaced apart in the width direction y in the second portion 120 and the two first marks 200 have a second distance d2 from the intersection of the second portion 120 and the bent portion 130, when the two-dimensional coordinates of the first marks 200 in the coordinate system are determined, that is, based on the information of the predetermined position (e.g., the first distance d1), the coordinates of each point at the intersection of the first portion 110 and the bent portion 130 can be determined, and when the two-dimensional coordinates of the second mark 500 in the coordinate system are determined, i.e., the coordinates of the points at the intersection of the second portion 120 and the bending portion 130 can be determined according to the information of the predetermined position (e.g., the second distance d 2). Of course, in another embodiment, two first marks 200 may be provided only in the first portion 110 at intervals along the width direction y, and the first distance d1 is provided at the boundary between the two first marks 200 and the first portion 110 and the bent portion 130, so as to determine the coordinates of each point at the boundary between the first portion 110 and the bent portion 130, and then, according to the information of the preset position (for example, the length d3 of the bent portion 130 in the length direction x), the coordinates of each point at the boundary between the first portion 110 and the bent portion 130 that has been determined are combined, so as to obtain the coordinates of each point at the boundary between the second portion 120 and the bent portion 130. It should be noted that the number and the preset position of the first marks 200 may be designed according to actual requirements, and this is not specifically limited in this embodiment of the application.
In other embodiments, the position information is mapped to a coordinate system established based on the flexible panel 100 to determine two-dimensional coordinates of the first marker 200 in the coordinate system, and the center coordinates of the flexible panel 100 are obtained according to the two-dimensional coordinates of the first marker 200 in the coordinate system to determine the target position of the functional film 300 attached to the flexible panel 100. That is, since the plane on which the flexible panel 100 is located can be determined, the position information of the first marker 200 can be obtained, and the coordinate system is the plane coordinate system of the plane on which the flexible panel 100 is located. The process of mapping the position information into the coordinate system established based on the flexible panel 100 is to determine the two-dimensional coordinates of the first marker 200 in the coordinate system. In combination with the information of the preset position and the two-dimensional coordinates of the first marker 200, there is a determinable mapping relationship between the center P of the flexible panel 100 and the first marker 200, by which the two-dimensional coordinates of the center P of the flexible panel 100 can be determined. In some embodiments, as shown in fig. 6, two first markers 200 are provided, and the two first markers 200 are arranged in central symmetry with respect to the center P of the flexible panel 100. Since the two-dimensional coordinates of the center point between the two points can be calculated on the basis of the two-dimensional coordinates of the two points, the two-dimensional coordinates of the center P of the flexible panel 100 can be obtained. In the subsequent bonding step, the center Q of the functional film 300 and the center P of the flexible panel 100 may be aligned and bonded.
S204, attaching the functional film layer 300 to a target position; wherein the first film 310 covers the non-display side surface 101 of the first portion 110, and the second film 320 covers the non-display side surface 101 of the second portion 120;
specifically, reference may be made to the contents of some of the foregoing embodiments, which are not described herein again.
It should be noted that, when the center Q of the functional film 300 is aligned and attached to the center P of the flexible panel 100, in some embodiments, the method further includes obtaining second image information of the notch 330 in the functional film 300, and determining the coordinate of the center Q of the functional film 300 according to the second image information, so that the center Q of the functional film 300 can be aligned to the center P of the flexible panel 100, and the functional film 300 can be attached to the flexible panel 100.
It is understood that, as shown in fig. 7, since the functional film layer 300 includes a first film layer 310 and a second film layer 320 which are independent from each other, and the first film layer 310 is aligned to the first portion 110 of the flexible panel 100, and the second film layer 320 is aligned to the second portion 120 of the flexible panel 100, a gap 330 is formed on the functional film layer 300 in a region of the bending portion 130 of the flexible panel 100, wherein the gap 330 is formed based on a space between the first film layer 110 and the second film layer 120. In some embodiments, please refer to fig. 7, a non-adhesive surface 301 may be disposed on a side of the functional film layer 300 opposite to the flexible panel 100, a release film 400 is disposed on the non-adhesive surface 301, and an adhesive surface 302 is disposed on a side of the functional film layer 300 facing the flexible panel 100. In one embodiment, the functional film layer 300 is made of an optical grade PET (polyester resin) layer. That is, both the side of the first film layer 110 facing away from the flexible panel 100 and the side of the second film layer 120 facing away from the flexible panel 100 are adhesive-free surfaces 301, the adhesive surfaces 302 are disposed on the sides of the first film layer 110 and the second film layer 120 facing toward the flexible panel 100, and the first film layer 110 and the second film layer 120 are independently disposed on the release film 400. Thus, after the functional film layer 300 is integrally attached, the release film 400 may be removed. That is, as an embodiment, the second image information of the notch 330 is obtained by obtaining the outline of the notch 330 and calculating the two-dimensional coordinates of the center Q of the functional film 300 according to the position of the notch 330 relative to the functional film 300. For example, as shown in fig. 8, fig. 8 is a schematic top view of fig. 7, in some embodiments, the center R of the notch 330 has a certain offset distance d4 with respect to the center P of the functional film 300, and since the functional film 300 corresponds to the flexible panel 100, the offset distance d4 can be obtained through the related position information on the flexible panel 100, thereby obtaining the two-dimensional coordinates of the center Q of the functional film 300. For another example, in some embodiments, the position information of the midpoint of the boundary of the side of the notch 330 adjacent to the first film layer 310 or the side of the notch 330 adjacent to the second film layer 320 may be obtained according to the contour of the notch 330, and then the two-dimensional coordinate of the center Q of the functional film layer 300 is obtained by referring to the aforementioned offset distance. The specific manner adopted can be designed according to the use requirement, and the embodiment of the application does not specifically limit the design. In addition, the specific mapping process may refer to the process of obtaining the two-dimensional coordinate of the center P of the flexible panel 100, which is not described herein again.
FIG. 9 is a schematic flow chart illustrating a method for fabricating a flexible display module according to yet another embodiment of the present application; fig. 10 is a schematic structural diagram of a flexible display module according to still another embodiment of the present application.
As shown in fig. 9, an embodiment of the present application provides a method for manufacturing a flexible display module, where the method includes the following steps:
s301, setting at least one first mark 200 at a preset position on the flexible panel 100; wherein the flexible panel 100 comprises a first portion 110, a second portion 120, and a bent portion 130 connecting the first portion 110 and the second portion 120;
specifically, reference may be made to the contents of some of the foregoing embodiments, which are not described herein again.
S302, covering a functional film layer 300 by taking the position of the first mark 200 on the non-display side surface 101 of the flexible panel 100 as a reference; wherein the functional film layer 300 comprises a first film layer 310 positioned on the first portion 110 and a second film layer 320 positioned on the second portion 120, and the first film layer 310 and the second film layer 320 are independent from each other;
specifically, reference may be made to the contents of some of the foregoing embodiments, which are not described herein again.
S303, bending the bending portion 130 such that the first portion 110 and the second portion 120 are overlapped in a direction perpendicular to the non-display side surface 101 of the flexible panel 100.
Specifically, due to the arrangement of the first mark 200, the attaching precision of the functional film layer 300 attached to the flexible panel 100 is improved, so that the bending precision is improved in the bending process, and the damage to the circuit in the bending area is reduced. In particular, in some embodiments, as shown in fig. 10, at least one second mark 500 may be respectively disposed on the side surfaces of the first film layer 310 and the second film layer 320 away from the flexible panel 100, and the position of the second mark 500 on the first film layer 310 and the second film layer 320 is taken as a reference to bend the bending portion 130, so that the first portion 110 and the second portion 120 are overlapped in a direction perpendicular to the non-display side surface 101 of the flexible panel 100. The bending process using the second mark 500 as a reference to determine the target position corresponding to the specific bending process can be implemented by referring to some of the aforementioned embodiments, but the present application is not limited thereto.
It should be noted that, in some embodiments, the first film layer 310 and the second film layer 320 are disposed at an interval, and the area pair of the interval between the first film layer 310 and the second film layer 320 is located at the bending portion 130, so as to facilitate the alignment when the first film layer 310 and the second film layer 320 are attached simultaneously.
In some embodiments, the first mark 200 is disposed at the connection between the bending portion 130 and the first portion 110, or the first mark 200 is disposed at the connection between the bending portion 130 and the second portion 120, so as to determine the coordinates of each point at the boundary between the first portion 110 and the bending portion 130 and the coordinates of each point at the boundary between the second portion 120 and the bending portion 130.
In order to facilitate the acquisition of the position information of the first markers 200 and the determination of the target position for attaching the functional film layer 300, in some embodiments, the first markers 200 are arranged in three along the length direction x of the flexible panel 100, and the distance between adjacent first markers 200 is 20 micrometers. In other embodiments, the first markers 200 are arranged in five along the length direction x of the flexible panel 100, and the distance between adjacent first markers 200 is 10 microns.
In particular to some embodiments, fig. 11 shows a schematic structural diagram of a flexible panel 100 provided with a first mark 200 in another embodiment of the present application, and it should be noted that fig. 11 is a top view direction of fig. 1 with respect to a viewing angle of fig. 1. As shown in fig. 11, the first mark 200 includes a cross-shaped mark and a linear mark, it is understood that only marks in the shapes of "ten" and "i" are illustrated in fig. 11, and it is understood that in a specific implementation, the shape of the mark may also be in the shapes of "one", "L", "O", and the like, which may be selected according to specific implementation needs, but the embodiment of the present application is not limited thereto. Referring to fig. 8, since the first marks 200 are disposed at intervals, and the distance between the first marks 200 is known, if there is an offset after the bonding, the amount of the offset can be known according to the number of the "|" shaped marks, which is convenient for subsequent adjustment and correction.
Fig. 12 is a schematic structural diagram of a flexible display module according to another embodiment of the present application.
Based on the same inventive concept, the embodiment of the application also provides a flexible display module, and the flexible display module is manufactured according to the manufacturing method of the flexible display module shown in any embodiment. As shown in fig. 12, the flexible display module includes a flexible panel 100 and a functional film 300, the flexible panel 100 includes a first portion 110, a second portion 120, and a bending portion 130 connecting the first portion 110 and the second portion 120, the functional film 300 includes a first film 310 opposite to the first portion 110 and a second film 320 opposite to the second portion 120, and the first film 310 and the second film 320 are independent of each other. In some embodiments, as shown in FIG. 7, a first marker 200 is provided on the second portion 120. In other embodiments, the first film layer 310 and the second film layer 320 are each provided with a second indicia 500.
It should be understood that, although the steps in the flowcharts of fig. 2, 3 and 9 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 described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2, 3 and 9 may include multiple 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 some of the other steps.
It should be noted that the technical solutions described above may be implemented as independent embodiments in actual implementation processes, or may be combined with each other and implemented as combined embodiments. In addition, when the contents of the embodiments of the present invention are described above, the different embodiments are described according to the corresponding sequence only based on the idea of convenient description, for example, the sequence of the data flow is adopted, and the execution sequence between the different embodiments is not limited. Accordingly, in the actual implementation process, if it is necessary to implement multiple embodiments provided by the present invention, the execution sequence provided in the embodiments of the present invention is not necessarily required, but the execution sequence between different embodiments may be arranged according to requirements.
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-mentioned embodiments only express several embodiments of the present application, 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 concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (15)
1. A manufacturing method of a flexible display module is characterized by comprising the following steps:
setting at least one first mark at a preset position on the flexible panel; wherein the flexible panel comprises a first portion, a second portion, and a bend portion connecting the first portion and the second portion;
covering a functional film layer by taking the position of the first mark on the non-display side surface of the flexible panel as a reference; wherein the functional film layer comprises a first film layer positioned on the first part and a second film layer positioned on the second part, and the first film layer and the second film layer are independent from each other.
2. The method for manufacturing a flexible display module according to claim 1, wherein the step of covering a functional film layer with reference to the position of the first mark on the non-display side surface of the flexible panel specifically comprises:
acquiring position information of the first mark relative to the flexible panel;
determining the target position of the functional film layer attached to the flexible panel according to the position information of the first mark;
attaching the functional film layer to the target position; the first film layer is arranged on the non-display side surface of the first part in a covering mode, and the second film layer is arranged on the non-display side surface of the second part in a covering mode.
3. The method for manufacturing a flexible display module according to claim 2, wherein the acquiring of the position information of the first mark relative to the flexible panel specifically comprises:
acquiring first image information of a non-display side of the flexible panel provided with at least one first mark;
and acquiring the position information of the first mark relative to the flexible panel according to the first image information.
4. The method for manufacturing the flexible display module according to claim 3, wherein the determining the target position of the functional film layer attached to the flexible panel according to the position information of the first mark specifically comprises:
mapping the position information into a coordinate system established based on the flexible panel to determine two-dimensional coordinates of the first marker in the coordinate system;
and acquiring two-dimensional coordinates of each point in the first part and the second part in the coordinate system according to the two-dimensional coordinates of the first mark in the coordinate system so as to determine the target position of the functional film layer attached to the flexible panel.
5. The method for manufacturing the flexible display module according to claim 3, wherein the determining the target position of the functional film layer attached to the flexible panel according to the position information of the first mark specifically comprises:
mapping the position information into a coordinate system established based on the flexible panel to determine two-dimensional coordinates of the first marker in the coordinate system;
and acquiring the central coordinate of the flexible panel according to the two-dimensional coordinate of the first mark in the coordinate system so as to determine the target position of the functional film layer attached to the flexible panel.
6. The method for manufacturing the flexible display module according to claim 5, wherein two first marks are provided, and the two first marks are arranged in a central symmetry manner with respect to the center of the flexible panel.
7. The method of claim 5, wherein the attaching the functional film layer to the target location comprises:
acquiring second image information of a notch in the functional film layer; the gap is formed based on a spacing between the first film layer and the second film layer;
determining the central coordinate of the functional film layer according to the second image information;
and aligning the center of the functional film layer with the center of the flexible panel, and attaching the functional film layer to the flexible panel.
8. The method of claim 1, wherein after the covering of the functional film layer with reference to the position of the first mark on the non-display side surface of the flexible panel, the method further comprises:
bending the bent portion such that the first portion and the second portion are overlapped in a direction perpendicular to a non-display side surface of the flexible panel.
9. The method according to claim 8, wherein bending the bending portion to make the first portion and the second portion overlap in a direction perpendicular to the non-display side surface of the flexible panel comprises:
respectively arranging at least one second mark on the surfaces of one sides of the first film layer and the second film layer far away from the flexible panel;
bending the bent portion with reference to a position of the second mark on the first film layer and the second film layer such that the first portion and the second portion are overlapped in a direction perpendicular to a non-display side surface of the flexible panel.
10. The method of any one of claims 1 to 9, wherein the first film layer and the second film layer are disposed at an interval, and a pair of spaced regions between the first film layer and the second film layer is located at the bending portion.
11. The method according to any one of claims 1 to 9, wherein the first mark is disposed at a connection between the bending portion and the first portion; alternatively, the first and second electrodes may be,
the first mark is arranged at the joint of the bending part and the second part.
12. The method as claimed in any one of claims 1 to 9, wherein the number of the first marks is three along the length direction of the flexible panel, and the distance between adjacent first marks is 20 μm.
13. The method as claimed in any one of claims 1 to 9, wherein five first marks are arranged along a length direction of the flexible panel, and a distance between adjacent first marks is 10 μm.
14. The method as claimed in any one of claims 1 to 9, wherein the first mark comprises a cross mark or a line mark.
15. A flexible display module manufactured by the method according to any one of claims 1 to 14.
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| CN115494666A (en) * | 2022-11-02 | 2022-12-20 | 业成科技（成都）有限公司 | Method for manufacturing liquid crystal module |
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