CN112289175B - Display panel manufacturing method, display panel and terminal - Google Patents

Display panel manufacturing method, display panel and terminal Download PDF

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Publication number
CN112289175B
CN112289175B CN201910670345.0A CN201910670345A CN112289175B CN 112289175 B CN112289175 B CN 112289175B CN 201910670345 A CN201910670345 A CN 201910670345A CN 112289175 B CN112289175 B CN 112289175B
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layer
display panel
bending
display
touch
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CN112289175A (en
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朱赫名
韩高才
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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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
    • 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
    • G09F9/33—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 being semiconductor devices, e.g. diodes
    • 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 disclosure relates to a manufacturing method of a display panel, the display panel and a terminal. The method comprises the following steps: acquiring a bending parameter of a display panel; respectively bending and molding the polarizing layer and the display layer according to the bending parameters of the display panel to obtain a molded polarizing layer and a molded display layer; and bonding the functional layers of the formed display panel according to the preset layers to obtain the display panel. Compared with the prior art, the display panel bending method and the display panel bending device can avoid stress generated by extrusion after bonding into a whole, so that the deformation stress of each layer of material can be released in advance, the limitation on the bending degree of the display panel is reduced, and the display panel can be bent greatly.

Description

Display panel manufacturing method, display panel and terminal
Technical Field
The embodiment of the disclosure relates to the technical field of screen manufacturing, and in particular relates to a manufacturing method of a display panel, the display panel and a terminal.
Background
Electronic consumer products such as mobile phones and tablet computers become an indispensable part of the daily life of the public, and the market demands for more and more diversified electronic products, so that the appearance of the flexible display panel is promoted.
The flexible display panel is also referred to as flexible display panel, i.e. the material of the display panel is made of a flexible material. In the related art, all functional layers of the display panel are bonded into a whole to obtain a combined layer, and then the combined layer is laminated on the outer layer curved glass to obtain a finished product of the display panel.
When the display panel is manufactured by adopting the related technology, if the bending amplitude of the display panel is large, cracks are easy to appear during pressing.
Disclosure of Invention
The embodiment of the disclosure provides a manufacturing method of a display panel, the display panel and a terminal. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, a method for manufacturing a display panel is provided, where functional layers of the display panel include a polarizing layer and a display layer;
the method comprises the following steps:
acquiring a bending parameter of a display panel;
respectively bending and molding the polarizing layer and the display layer according to the bending parameters of the display panel to obtain a molded polarizing layer and a molded display layer;
and bonding the functional layers formed by the display panel according to preset layers to obtain the display panel.
Optionally, the functional layers of the display panel further comprise a touch layer;
the method further comprises the following steps:
and according to the bending parameters of the display panel, bending and molding the touch layer to obtain the molded touch layer.
Optionally, the functional layer of the display panel further comprises a protective layer;
the method further comprises the following steps:
and bending and molding the protective layer according to the bending parameters of the display panel to obtain the molded protective layer.
Optionally, the functional layer of the display panel further includes a protective layer, wherein the protective layer is formed by pre-bending;
the acquiring of the display panel bending parameters comprises:
and obtaining the bending parameters of the protective layer, and determining the bending parameters of the display panel according to the bending parameters of the protective layer.
Optionally, the preset layers of the functional layers after the display panel is molded are as follows: the touch screen comprises a protective layer, a polarizing layer, a touch layer and a display layer from outside to inside;
the method for bonding the functional layers formed by the display panel according to the preset layers to obtain the display panel comprises the following steps:
and sequentially bonding the protective layer, the polarizing layer, the touch layer and the display layer from outside to inside or from inside to outside according to the preset level to obtain the display panel.
Optionally, the preset layers of the functional layers after the display panel is molded are as follows: the touch screen comprises a protective layer, a polarizing layer, a touch layer and a display layer from outside to inside;
the method for bonding the functional layers formed by the display panel according to the preset layers to obtain the display panel comprises the following steps:
sequentially bonding the polarizing layer, the touch layer and the display layer from outside to inside or from inside to outside according to the preset layers to obtain a combined layer;
and bonding the combination layer and the protective layer according to the preset layer to obtain the display panel.
Optionally, the bending manner includes: direct bending forming or hot-press bending forming.
Optionally, the bending angle of the display panel is 180 degrees.
According to a second aspect of the embodiments of the present disclosure, there is provided a display panel manufactured by the above method.
According to a third aspect of the embodiments of the present disclosure, there is provided a terminal including a display panel, the display panel being manufactured by the above method.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
according to the technical scheme provided by the embodiment of the disclosure, the functional layers are bent and formed firstly and then bonded to obtain the display panel, and compared with the related art, the display panel can avoid the situation that the functional layers are bent after being bonded into a whole, so that stress generated by extrusion of the functional layers is avoided.
Drawings
Fig. 1 schematically illustrates a stacked structure of a display panel;
fig. 2 is a schematic view schematically illustrating a method of manufacturing a display panel provided in the related art;
FIG. 3 is a flow chart illustrating a method of fabricating a display panel according to an exemplary embodiment of the present disclosure;
FIG. 4 is a schematic diagram illustrating a method of fabricating a display panel according to an exemplary embodiment of the present disclosure;
FIG. 5 is a flow chart illustrating a method of fabricating a display panel according to another exemplary embodiment of the present disclosure;
FIG. 6 is a schematic diagram illustrating a method of fabricating a display panel according to another exemplary embodiment of the present disclosure;
FIG. 7 is a schematic diagram illustrating a display panel with large bending according to an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
As shown in fig. 1, a schematic view of a stacked structure of a display panel 10 is exemplarily shown. The display panel 10 includes a plurality of functional layers stacked together, as shown in fig. 1, which sequentially include from outside to inside: protective layer 11, polarizing layer 12, touch layer 13, and display layer 14.
As shown in fig. 2, a schematic diagram schematically illustrating a manufacturing method of a display panel provided in the related art is shown. In the related art, two adjacent layers are bonded together according to the positional relationship among the polarizing layer 12, the touch layer 13 and the display layer 14 to obtain a combined layer 15, and then the combined layer 15 is laminated on the protective layer 11 by using a lamination process. The protective layer 11 may be curved glass. Because the protective layer 11 has certain crooked radian, when the combined layer 15 pressfitting to protective layer 11, each layer of combined layer 15 and middle adhesive material can receive the stress of different grade type because bending deformation, and outer material receives tensile stress because of tensile deformation, and inlayer material receives compressive stress because of compression deformation, and the too big material that can cause of stress splits to the bending deformation degree of combined layer 15 has been restricted, leads to display panel 10 can't realize bending by a wide margin.
Fig. 3 is a flowchart illustrating a method for manufacturing a display panel according to an exemplary embodiment of the present disclosure, which may include the following steps:
in step 301, display panel bending parameters are acquired.
The display panel is a panel capable of displaying text, pictures, videos and the like, and comprises a plurality of different functional layers. In this embodiment, the display panel includes a polarizing layer and a display layer. The polarizing layer is used for realizing a polarizing function, and the display layer is used for realizing a display function. Optionally, the display layer is made of a flexible material, such as an OLED (Organic Light-Emitting Diode) flexible display layer. The polarizing layer is a functional layer having a polarizing effect.
The display panel bending parameters are used to characterize bending requirements for the display panel, including, but not limited to, at least one of: bending position, bending angle, bending curvature and other parameters.
Alternatively, since the display panel includes several different functional layers, the display panel bending parameter may include the bending parameters of the respective functional layers. The bending parameter of each functional layer is used to characterize the bending requirements for that functional layer, including, but not limited to, at least one of: bending position, bending angle, bending curvature and other parameters. For example, the functional layers of the display panel include a polarizing layer and a display layer, the bending parameters of the polarizing layer are used for representing the bending requirements of the polarizing layer, and the bending parameters of the display layer are used for representing the bending requirements of the display layer. The bending parameters of different functional layers may be the same or different, and are not limited in this disclosure.
In step 302, the polarizing layer and the display layer are respectively bent and molded according to the bending parameters of the display panel, so as to obtain a molded polarizing layer and a molded display layer.
The polarizing layer or the display layer may be bent to a desired shape by a direct bending method, for example, bending the polarizing layer or the display layer to a desired shape by applying a force directly at room temperature; the polarizing layer or the display layer may be formed by hot-press bending, for example, by heating the material of the polarizing layer or the display layer to a temperature suitable for bending.
In addition, if the bending parameters of the polarizing layer and the display layer are the same, respectively bending and molding the polarizing layer and the display layer according to the same bending parameters; and if the bending parameters of the polarizing layer are different from those of the display layer, bending and molding the polarizing layer according to the bending parameters of the polarizing layer, and bending and molding the display layer according to the bending parameters of the display layer.
In step 303, the functional layers formed by the display panel are bonded according to a preset hierarchy, so as to obtain the display panel.
For example, the patterned polarizing layer and the patterned display layer are bonded by a bonding material, which may be an optical resin or other bonding material having light transmissive properties.
In one example, as shown in fig. 4, the polarizing layer 12 and the display layer 14 are first curved to obtain a shaped polarizing layer 12 and a shaped display layer 14, and then the inner surface of the shaped polarizing layer 12 is bonded to the outer edge surface of the shaped display layer 14 to obtain the display panel 10.
According to the technical scheme provided by the embodiment of the disclosure, the functional layers are bent and formed firstly and then bonded to obtain the display panel, and compared with the related art, the display panel can avoid the situation that the functional layers are bent after being bonded into a whole, so that stress generated by extrusion of the functional layers is avoided.
Fig. 5 is a flowchart illustrating a method for fabricating a display panel according to another exemplary embodiment of the present disclosure, which may include the following steps:
in step 501, display panel bending parameters are obtained.
In this embodiment, the functional layers of the display panel include a touch layer in addition to the polarizing layer and the display layer. The touch layer is a functional layer capable of sensing touch operation signals (such as operation signals of clicking, sliding, pressing and the like). Optionally, the display panel bending parameters further comprise bending parameters of the touch layer, the bending parameters of the touch layer being used to characterize bending requirements of the touch layer. In addition, the bending parameters of different functional layers may be the same or different, and the embodiment of the present disclosure does not limit this.
Optionally, the functional layer of the display panel further comprises a protective layer. The protective layer is located on the outermost layer of the display panel, and is used for protecting each internal functional layer from being damaged by the external environment, and the protective layer may be made of a glass material, an acrylic material, or other materials with light transmission performance. In addition, the protection layer also needs to be bent, and the bent shape of the protection layer may be formed in the production process of the protection layer, or may be formed after the protection layer in a planar form is bent, which is not limited in the embodiment of the present disclosure.
In one example, if the bending shape of the protective layer is already formed during the production of the protective layer, the bending parameter of the protective layer may be obtained and the bending parameter of the display panel may be determined according to the bending parameter of the protective layer. Wherein the bending parameter of the protective layer is used to characterize the bending requirement for the protective layer, such as including but not limited to at least one of: bending position, bending angle, bending curvature and other parameters. From the bending parameters of the protective layer, bending parameters of other functional layers of the display panel (such as the polarizing layer, the touch layer and the display layer) can be determined.
In another example, if the protective layer is not bent during the generation process, the bending parameters of the display panel may further include the bending parameters of the protective layer, so that the protective layer is subsequently bent according to the bending parameters of the protective layer.
In step 502, the polarizing layer, the touch layer and the display layer are respectively bent and molded according to the bending parameters of the display panel, so as to obtain a molded polarizing layer, a molded touch layer and a molded display layer.
The touch layer can be bent or formed directly, for example, the touch layer at normal temperature can be bent into a desired shape by directly applying a force; or a hot-press bending forming mode can be adopted, namely the touch layer material is heated to the temperature suitable for bending and then is subjected to bending forming.
In addition, if the curved shape of the protective layer is already formed during the production of the protective layer, there is no need to bend the protective layer; if the protective layer is not bent in the generating process, the protective layer is further bent according to the bending parameters of the display panel, for example, according to the bending parameters of the protective layer included in the bending parameters of the display panel, so as to obtain the formed protective layer.
And after obtaining the functional layers formed by the display panel, bonding the formed functional layers according to the preset layers to obtain the display panel. The preset layers of the functional layers after the display panel is molded are as follows: the touch screen comprises a protective layer, a polarizing layer, a touch layer and a display layer from outside to inside. In one possible embodiment, the bonding process may include the following steps 503-504:
in step 503, the polarizing layer, the touch layer and the display layer are bonded in sequence from outside to inside or from inside to outside according to a preset hierarchy, so as to obtain a combined layer.
And if the combined layer is obtained by bonding in the sequence from outside to inside, bonding the inner surface of the molded polarizing layer and the outer surface of the molded touch layer, and bonding the inner surface of the molded touch layer and the outer surface of the molded display layer to obtain the combined layer. And if the combined layer is obtained by bonding in the sequence from inside to outside, bonding the inner surface of the molded touch layer and the outer surface of the molded display layer, and bonding the inner surface of the molded polarizing layer and the outer surface of the molded touch layer to obtain the combined layer. The outer surface of the combined layer is the outer surface of the molded polarizing layer, and the inner surface of the combined layer is the inner surface of the molded display layer.
Alternatively, the adhesive material between the three functional layers may be optical resin or other adhesive material with light transmission property.
In addition, if the display panel does not include a touch layer, the inner surface of the molded polarizing layer and the outer surface of the molded display layer are directly bonded to obtain a combined layer.
In step 504, the combination layer and the protection layer are bonded according to a preset hierarchy to obtain the display panel.
After the combined layer is bonded, the outer surface of the combined layer and the inner surface of the protective layer are bonded to obtain a display panel. In addition, the combination layer is bonded to the protective layer, and the bonding material may be an optical resin or other bonding material having a light-transmitting property.
In one example, as shown in fig. 6, the polarizing layer 12, the touch layer 13, and the display layer 14 are first bent and molded to obtain the molded polarizing layer 12, the molded touch layer 13, and the molded display layer 14, the molded polarizing layer 12, the molded touch layer 13, and the molded display layer 14 are then bonded to obtain the combined layer 15, and the combined layer 15 is then bonded to the protective layer 11 to obtain the display panel 10.
In some other possible embodiments, the protective layer, the polarizing layer, the touch layer, and the display layer may also be sequentially bonded in a preset order from outside to inside or from inside to outside to obtain the display panel, which is not limited in the embodiments of the present disclosure. For example, if the display panel is obtained by bonding in the order from the outside to the inside, the display panel is obtained by bonding the inner surface of the molded protective layer and the outer surface of the molded polarizing layer, bonding the inner surface of the molded polarizing layer and the outer surface of the molded touch layer, and finally bonding the inner surface of the molded touch layer and the outer surface of the molded display layer. And if the combined layers are bonded from inside to outside to obtain the combined layer, bonding the inner surface of the molded touch layer and the outer surface of the molded display layer, bonding the inner surface of the molded polarizing layer and the outer surface of the molded touch layer, and bonding the inner surface of the molded protective layer and the outer surface of the molded polarizing layer to obtain the display panel.
In addition, in the embodiment of the disclosure, the display panel can be bent greatly, for example, the bending angle of the display panel can reach 30 degrees, 90 degrees, 135 degrees, 180 degrees or even more. In one example, as shown in fig. 7, the bending angle of the display panel 10 is 180 degrees, that is, the display panel 10 includes a first display area 21 and a second display area 22 opposite to each other, and a third display area 23 connecting the first display area 21 and the second display area 22. Wherein the third display area 23 is curved, the back surfaces of the first display area 21 and the second display area 22 are opposite, and the first display area 21 and the second display area 22 are parallel.
It should be noted that, the functional layers included in the display panel and the hierarchical structure between the functional layers provided in the embodiments of the present disclosure are only exemplary and explanatory, and it is known to a person skilled in the art that the functional layers and the hierarchical structure included in the display panel may be changed with the advent of new technologies, but the technical solutions provided in the embodiments of the present disclosure are also applicable to similar technical problems.
In the technical scheme provided by the embodiment of the disclosure, each functional layer is bent and formed firstly and then bonded to obtain the display panel, compared with the related art, the bending after bonding can be avoided, and the stress generated by extruding each functional layer is caused.
An exemplary embodiment of the present disclosure also provides a display panel, which is manufactured by the manufacturing method described in the above embodiment.
An exemplary embodiment of the present disclosure also provides a terminal, for example, the terminal may be a mobile terminal device such as a mobile phone, a tablet computer, a notebook computer, an e-book reader, a wearable device, or other terminal devices such as a vehicle-mounted terminal, a game console, a computer, a medical device, a fitness device, and the like, which is not limited in this disclosure. The terminal comprises a display panel, and the display panel is manufactured by adopting the manufacturing method described in the above embodiment.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (9)

1. The manufacturing method of the display panel is characterized in that the functional layer of the display panel comprises a polarizing layer, a touch layer and a display layer;
the method comprises the following steps:
acquiring bending parameters of a display panel, wherein the bending parameters of the display panel comprise bending parameters of the polarizing layer, bending parameters of the touch layer and bending parameters of the display layer;
respectively bending and molding the polarizing layer, the touch layer and the display layer according to the bending parameters of the polarizing layer, the bending parameters of the touch layer and the bending parameters of the display layer to obtain a molded polarizing layer, a molded touch layer and a molded display layer;
and bonding the functional layers formed by the display panel according to preset layers to obtain the display panel.
2. The method of claim 1, wherein the functional layers of the display panel further comprise a protective layer;
the method further comprises the following steps:
and bending and forming the protective layer according to the bending parameters of the display panel to obtain the formed protective layer.
3. The method of claim 1, wherein the functional layer of the display panel further comprises a protective layer, wherein the protective layer is a pre-bent protective layer;
the acquiring of the display panel bending parameters comprises:
and obtaining the bending parameters of the protective layer, and determining the bending parameters of the display panel according to the bending parameters of the protective layer.
4. The method according to claim 2 or 3, wherein the predetermined layers of the functional layers after the display panel is formed are: the touch screen comprises a protective layer, a polarizing layer, a touch layer and a display layer from outside to inside;
the method for bonding the functional layers formed by the display panel according to the preset layers to obtain the display panel comprises the following steps:
and sequentially bonding the protective layer, the polarizing layer, the touch layer and the display layer from outside to inside or from inside to outside according to the preset level to obtain the display panel.
5. The method according to claim 2 or 3, wherein the predetermined layers of the functional layers after the display panel is formed are: the touch screen comprises a protective layer, a polarizing layer, a touch layer and a display layer from outside to inside;
the method for bonding the functional layers formed by the display panel according to the preset layers to obtain the display panel comprises the following steps:
sequentially bonding the polarizing layer, the touch layer and the display layer from outside to inside or from inside to outside according to the preset layers to obtain a combined layer;
and bonding the combination layer and the protective layer according to the preset layer to obtain the display panel.
6. The method of claim 1 or 2, wherein the bending comprises: direct bending forming or hot-press bending forming.
7. The method of claim 1 or 2, wherein the display panel is bent at an angle of 180 degrees.
8. A display panel manufactured by the manufacturing method according to any one of claims 1 to 7.
9. A terminal, characterized in that it comprises a display panel made by the method according to any one of claims 1 to 7.
CN201910670345.0A 2019-07-24 2019-07-24 Display panel manufacturing method, display panel and terminal Active CN112289175B (en)

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