CN110740202B - Cover plate, display module and foldable electronic equipment - Google Patents

Cover plate, display module and foldable electronic equipment Download PDF

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Publication number
CN110740202B
CN110740202B CN201911002018.4A CN201911002018A CN110740202B CN 110740202 B CN110740202 B CN 110740202B CN 201911002018 A CN201911002018 A CN 201911002018A CN 110740202 B CN110740202 B CN 110740202B
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Prior art keywords
sub
cover plate
cover
screen
bending
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CN110740202A (en
Inventor
成东村
罗政军
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to CN201911002018.4A priority Critical patent/CN110740202B/en
Publication of CN110740202A publication Critical patent/CN110740202A/en
Priority to PCT/CN2020/113047 priority patent/WO2021077909A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H04M1/0216Foldable in one direction, i.e. using a one degree of freedom hinge
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/1613Constructional details or arrangements for portable computers
    • G06F1/1615Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1616Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026Details of the structure or mounting of specific components

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The embodiment of the invention provides a cover plate, a display module and electronic equipment, wherein the cover plate comprises: the light-transmitting first sub cover plate, the light-transmitting second sub cover plate and the light-transmitting bent part are arranged on the light-transmitting first sub cover plate; the bent part is connected between the first sub-cover plate and the second sub-cover plate, a plurality of openings are formed in the bent part, and light-transmitting filling pieces are filled in the openings; the first sub-cover plate and the second sub-cover plate can be folded through bending of the bending part, wherein the toughness of the filling piece is greater than that of the first sub-cover plate and the second sub-cover plate. The embodiment of the invention can avoid the phenomenon of unevenness on the surface of the cover plate.

Description

Cover plate, display module and foldable electronic equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a cover plate, a display module, and a foldable electronic device.
Background
With the extreme pursuit of the use experience, the performance requirements of users on electronic devices such as smart phones and tablet computers are higher and higher. The folding electronic equipment is used as novel electronic equipment, and when the folding electronic equipment is in an unfolding state, the screen is large, so that a user can obtain a good video viewing effect, and good application operation experience is realized; when the folding type portable handheld electronic device is in a folding state, the size is small, and the portable handheld electronic device can be conveniently carried by a user. Therefore, the foldable electronic device has gradually become a trend.
Since the screen of the foldable electronic device needs to be repeatedly bent, the cover plate on the screen also needs to be repeatedly bent. In the process of bending the cover plate, the bent part on the cover plate easily generates large internal stress, and under the action of the internal stress, the surface of the cover plate is easily uneven.
Disclosure of Invention
In view of this, in order to solve the problem that the surface of the bent portion of the cover plate is prone to be uneven in the existing foldable electronic device, embodiments of the present invention provide a cover plate, a display module and a foldable electronic device.
In a first aspect, an embodiment of the present invention discloses a cover plate for a foldable electronic device, including: the light-transmitting first sub cover plate, the light-transmitting second sub cover plate and the light-transmitting bent part are arranged on the light-transmitting first sub cover plate;
the bent part is connected between the first sub-cover plate and the second sub-cover plate, a plurality of openings are formed in the bent part, and light-transmitting filling pieces are filled in the openings; the first sub-cover plate and the second sub-cover plate can be folded through bending of the bending part, wherein the toughness of the filling piece is greater than that of the first sub-cover plate and the second sub-cover plate.
In a second aspect, an embodiment of the present invention further discloses a display module, including: a flexible screen and the cover plate; wherein,
the flexible screen comprises a first flexible sub-screen and a second flexible sub-screen;
the first flexible sub-screen and the second flexible sub-screen are foldable relative to each other;
and a first sub-cover plate of the cover plate is connected with the first flexible sub-screen, and a second sub-cover plate of the cover plate is connected with the second flexible sub-screen.
In a third aspect, an embodiment of the present invention further discloses a foldable electronic device, including: the display module is provided.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, the bent part of the cover plate is connected between the first sub-cover plate and the second sub-cover plate, the bent part is provided with a plurality of openings, the openings are filled with light-transmitting filling pieces, and the toughness of the filling pieces is greater than that of the first sub-cover plate and the second sub-cover plate. Therefore, when the first sub-cover plate and the second sub-cover plate are folded through bending of the bending part, the opening on the bending part and the filling piece in the opening can be used for releasing the bending stress of the bending part, so that the first sub-cover plate and the second sub-cover plate are kept flat, the phenomenon that the cover plate is uneven is avoided, and the bending performance of the cover plate is improved.
Drawings
FIG. 1 is a schematic view of a cover of the present invention in an unfolded state;
FIG. 2 is a schematic view of a cover of the present invention in a folded configuration;
fig. 3 is a schematic structural diagram of a display module according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, a schematic structural diagram of a cover plate of the present invention in an unfolded state is shown, and referring to fig. 2, a schematic structural diagram of a cover plate of the present invention in a folded state is shown, which may specifically include: a first transparent sub-cover plate 10, a second transparent sub-cover plate 11 and a transparent bending part 12; the bending part 12 is connected between the first sub-cover plate 10 and the second sub-cover plate 11, a plurality of openings 121 are formed in the bending part 12, and light-transmitting filling members are filled in the openings 121; the first sub-cover 10 and the second sub-cover 11 are foldable by bending the bent portion 12, wherein the toughness of the filling member is greater than the toughness of the first sub-cover 10 and the second sub-cover 11.
In the embodiment of the present invention, when the first sub-cover plate 10 and the second sub-cover plate 11 are folded relatively by bending the bending portion 12, because the bending portion 12 is provided with the plurality of openings 121, the openings 121 are filled with the light-transmitting filling member, the toughness of the filling member is greater than the toughness of the first sub-cover plate 10 and the second sub-cover plate 11, and the filling members in the openings 121 and the openings 121 can be used for releasing the bending stress of the bending portion 12, so as to improve the bending performance of the bending portion 12, so that the cover plate can be folded repeatedly, and the service life of the cover plate is prolonged.
Moreover, since the through holes 121 can be used for releasing the bending stress of the bending portions 12, the cover plate can keep the first sub-cover plate 10 and the second sub-cover plate 11 flat when being folded, and the cover plate is prevented from being uneven.
In practical application, when the cover is applied to an electronic device, when the first sub-cover 10 and the second sub-cover 11 are folded relatively by bending the bending portion 12, the opening 121 on the bending portion 12 may be deformed to release the bending stress of the bending portion 12, and moreover, since the toughness of the filling member in the opening 121 is greater than the toughness of the first sub-cover 10 and the second sub-cover 11, the filling member in the opening 121 may further reduce the bending stress of the bending portion 12, thereby improving the bending performance of the bending portion 12, avoiding the problem that the first sub-cover 10 and the second sub-cover 11 are easy to arch up when the bending stress on the bending portion 12 cannot be released, and maintaining the flatness of the first sub-cover 10 and the second sub-cover 11.
In the embodiment of the present invention, the opening 121 of the bending portion 12 may be filled with a light-transmitting filling member, so that when the cover plate is in the unfolded state shown in fig. 1 or the folded state shown in fig. 2, the opening 121 is filled with the light-transmitting filling member, so that the opening 121 and the peripheral area maintain the appearance consistency, and the appearance effect of the cover plate is improved.
In practical applications, when the cover is applied to an electronic device, since the opening 121 may be used to release the bending stress of the bending portion 12 and keep the first sub-cover 10 and the second sub-cover 11 flat, the thickness of the first sub-cover 10 and the second sub-cover 11 may be designed to be thicker. Thus, the phenomenon of unevenness easily appearing on the screen surface of the electronic device when the first sub-cover plate 10 and the second sub-cover plate 11 are thin can be avoided, so that the cover plate is not easy to scratch, the scratch resistance of the cover plate is improved, and the appearance effect of the electronic device can be further improved.
In an alternative embodiment of the present invention, the plurality of openings 121 may be uniformly distributed on the bending portion 12. In practical application, under the condition that the plurality of openings 121 are uniformly distributed, the openings 121 can uniformly release the bending stress of the bending portion 12, so that the bending stress release effect of the bending portion 12 during bending is further improved, and further, the bending performance of the bending portion 12 can be further improved, and the service life of the cover plate is prolonged.
Of course, in practical applications, a person skilled in the art can design the specific distribution of the through holes 121 on the bending portion 12 according to actual needs. For example, a larger number of holes 121 may be provided in regions where the bending stress is larger, and a smaller number of holes 121 may be provided in regions where the bending stress is smaller. The embodiment of the invention does not limit the specific distribution of the openings 121 on the bending portion 12.
In the embodiment of the present invention, the size of the opening 121 satisfies the predetermined range, so that the opening 121 can achieve both a better bending stress releasing effect and a better processing performance. Specifically, the size of the opening 121 may be the length, width or diameter of the opening 121. For example, in the case where the aperture 121 is circular in shape, the size of the aperture 121 may be a diameter. As another example, in the case where the shape of the opening 121 is an ellipse, the size of the opening 121 may be a length and a width. The specific content of the size of the opening 121 in the embodiment of the present invention may not be limited.
Specifically, the preset range can be 0.01-0.10 mm. Specifically, under the condition that the size of the opening 121 is 0.01-0.10 mm, the opening 121 can have a good bending stress releasing effect, and the boundary of the opening 121 is difficult to see from the appearance of the cover plate, so that the appearance effect of the cover plate is good. Moreover, under the condition that the size of the opening 121 is 0.01-0.10 mm, the opening 121 can be processed by adopting a general laser drilling machine or a laser microporator, so that the processing performance of the opening 121 is better.
In the embodiment of the present invention, the specific size of the opening 121 may be set according to actual situations. For example, in the case where the thickness of the cover plate is thick, since the bending stress of the cover plate is large, the size of the opening 121 may be correspondingly large. For another example, when the bending radius of the cover plate is large, the size of the opening 121 may be correspondingly large in order to improve the effect of releasing the bending stress of the opening 121.
It is understood that in practical applications, a person skilled in the art can set the specific size of the opening 121 according to practical needs. For example, the opening 121 may be set to a size greater than 0.01 mm and less than 0.1 mm. The specific size of the opening 121 may not be limited in the embodiment of the present invention.
Optionally, the opening 121 may be a through hole or a blind hole, and the specific type of the opening 121 may not be limited in the embodiment of the present invention.
In the embodiment of the invention, the reflectivity of the filling member in the opening 121 and the reflectivity of the bending portion 12 can be consistent, so as to further improve the appearance consistency of the through hole 121 and the peripheral area.
In particular, the filling member may be made of optical cement or other transparent material with high toughness. The filling member can be an optical cement filling member, and the optical cement filling member is made of organic silica gel, acrylic resin, unsaturated polyester, polyurethane, epoxy resin and other optical cement. The optical adhesive is colorless and transparent, has light transmittance of over 90 percent, has good bonding strength, can be cured at room temperature or middle temperature, and has the characteristics of small curing shrinkage and the like. Under the condition that the optical cement filling piece is made of optical cement, the filling piece can be made to be transparent, and the filling piece can have good toughness, so that when the filling piece is filled in the opening 121 of the bending part 12, the toughness of the bending part 12 can be improved, and the bending stress of the bending part 12 is reduced to a certain extent.
In practical applications, when the reflectivity of the filling member in the opening 121 is consistent with the reflectivity of the bent portion 12, no matter the cover is in the unfolded state shown in fig. 1 or the folded state shown in fig. 2, the reflectivity of the filling member in the opening 121 is consistent with the reflectivity of the bent portion 12, and the opening 121 can maintain the appearance consistency with the peripheral area, so that the appearance effect of the cover can be further improved.
In the embodiment of the present invention, the first sub-cover 10 and the first sub-cover 11 are light-transmissive covers. Specifically, under the condition that the first sub cover plate 10 and the first sub cover plate 11 are light-transmitting cover plates, light emitted by a screen of the electronic device can penetrate through the first sub cover plate 10 and the second sub cover plate 11, and the display effect of the electronic device is improved.
Alternatively, the first sub-cover plate 10 and the second sub-cover plate 11 may be glass cover plates or polymethyl methacrylate cover plates. In practical applications, when the first sub-cover plate 10 and the second sub-cover plate 11 are glass sub-cover plates, the first sub-cover plate 10 and the second sub-cover plate 11 can have excellent light transmission performance, excellent scratch resistance performance, and excellent appearance performance. In the case where the first sub cover plate 10 and the second sub cover plate 11 are methyl methacrylate cover plates, the first sub cover plate 10 and the second sub cover plate 11 can have excellent weather resistance and good processability.
It is understood that, in practical applications, a person skilled in the art may select other transparent materials to make the first sub-cover 10 and the second sub-cover 11 according to actual needs, and the material of the first sub-cover 10 and the second sub-cover 11 in the embodiment of the present invention may not be specifically limited.
In an alternative embodiment of the present invention, the first sub-cover plate 10, the second sub-cover plate 11 and the bent portion 12 may be an integrally formed structure. In practical applications, the first sub-cover 10, the second sub-cover 11, and the bent portion 12 may be formed by hot press molding or injection molding, and then the opening 121 is formed on the bent portion 12 by laser processing.
In practical applications, when the first sub-cover 10, the second sub-cover 11 and the bent portion 12 are integrally formed, the processing process of the cover can be simplified, the connection reliability between the first sub-cover 10, the second sub-cover 11 and the bent portion 12 can be improved, and the structural stability of the cover can be improved.
In summary, the cover plate according to the embodiment of the present invention at least has the following advantages:
in the embodiment of the invention, the bent part of the cover plate is connected between the first sub-cover plate and the second sub-cover plate, the bent part is provided with a plurality of openings, the openings are filled with light-transmitting filling pieces, and the toughness of the filling pieces is greater than that of the first sub-cover plate and the second sub-cover plate. Therefore, when the first sub-cover plate and the second sub-cover plate are folded through bending of the bending part, the opening on the bending part and the filling piece in the opening can be used for releasing the bending stress of the bending part, so that the first sub-cover plate and the second sub-cover plate are kept flat, the phenomenon that the cover plate is uneven is avoided, and the bending performance of the cover plate is improved.
Referring to fig. 3, a schematic structural diagram of a display module according to the present invention is shown, where the display module specifically includes: a flexible screen 30 and the cover plate 31; wherein the flexible screen 30 includes a first flexible sub-screen and a second flexible sub-screen; the first flexible sub-screen and the second flexible sub-screen are foldable relative to each other; the first sub-cover of the cover 31 is connected to the first flexible sub-screen, and the second sub-cover of the cover 31 is connected to the second flexible sub-screen.
In the embodiment of the present invention, since the first sub cover plate is connected to the first flexible sub screen, and the second sub cover plate is connected to the second flexible sub screen, in the process of relatively folding the first flexible sub screen and the second flexible sub screen, the first sub cover plate and the second sub cover plate can be correspondingly folded by bending the bending portion. Because the bending part is connected between the first sub-cover plate and the second sub-cover plate, the bending part is provided with a plurality of openings, the openings are filled with light-transmitting filling pieces, and the toughness of the filling pieces is greater than that of the first sub-cover plate and the second sub-cover plate. Therefore, when the first sub-cover plate and the second sub-cover plate are folded through bending of the bending part, the opening on the bending part and the filling piece in the opening can be used for releasing the bending stress of the bending part, so that the first sub-cover plate and the second sub-cover plate are kept flat, the phenomenon that the cover plate is uneven is avoided, and the bending performance of the cover plate is improved.
To sum up, the display module according to the embodiment of the present invention at least has the following advantages:
in the display module according to the embodiment of the present invention, in the process of relatively folding the first flexible sub-screen and the second flexible sub-screen, the first sub-cover plate and the second sub-cover plate may be relatively folded by bending the bending portion. The bending part is connected between the first sub-cover plate and the second sub-cover plate, a plurality of openings are formed in the bending part, light-transmitting filling pieces are filled in the openings, and the toughness of the filling pieces is greater than that of the first sub-cover plate and that of the second sub-cover plate. Therefore, when the first sub-cover plate and the second sub-cover plate are folded through bending of the bending part, the opening on the bending part and the filling piece in the opening can be used for releasing the bending stress of the bending part, so that the first sub-cover plate and the second sub-cover plate are kept flat, the phenomenon that the cover plate is uneven is avoided, and the bending performance of the cover plate is improved.
The embodiment of the invention provides a folding electronic device, which specifically comprises: the display module is provided. The foldable electronic device may include, but is not limited to, any one of a mobile phone, a tablet computer, and a wearable device, and the specific type of the electronic device may not be limited in the embodiments of the present invention.
In the electronic device according to the embodiment of the invention, the opening on the cover plate of the display module can be used for releasing the bending stress of the bending part and keeping the first sub-cover plate and the second sub-cover plate flat, so that the phenomenon of unevenness easily occurring on the surface of the display module can be avoided, the scratch resistance of the display module is improved, and the appearance effect of the electronic device can be improved.
In this embodiment of the present invention, the electronic device may further include: a first folded portion and a second folded portion; the first folding part and the second folding part can be folded oppositely; the first flexible sub-screen of the display screen module is connected with the first folding part, and the second flexible sub-screen of the display screen module is connected with the second folding part.
In practical application, when the first folding portion and the second folding portion are folded oppositely, the opening on the folding portion and the filling piece in the opening can be used for releasing the bending stress of the folding portion, so that the first sub-cover plate and the second sub-cover plate are kept flat, the phenomenon that the cover plate is uneven is avoided, and the bending performance of the cover plate is improved. To sum up, the electronic device according to the embodiment of the present invention at least includes the following advantages:
in the electronic device according to the embodiment of the invention, the opening on the cover plate of the display module can be used for releasing the bending stress of the bending part and keeping the cover plate flat, so that the phenomenon of unevenness of the cover plate can be avoided, the scratch resistance of the cover plate can be improved, and the appearance performance of the electronic device can be improved.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The above detailed description is made on a cover plate, a display module and an electronic device provided by the present invention, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (9)

1. A cover for a foldable electronic device, comprising: the light-transmitting first sub cover plate, the light-transmitting second sub cover plate and the light-transmitting bent part are arranged on the light-transmitting first sub cover plate;
the bent part is connected between the first sub-cover plate and the second sub-cover plate, and a plurality of openings are formed in the bent part; the opening is filled with a light-transmitting filling piece, the first sub-cover plate and the second sub-cover plate can be folded through bending of the bending part, and the toughness of the filling piece is greater than that of the first sub-cover plate and that of the second sub-cover plate;
and the reflectivity of the filling piece is consistent with that of the bending part.
2. The cover plate according to claim 1, wherein the plurality of openings are uniformly distributed at the bent portion.
3. The decking of claim 1, wherein the apertures are through-holes or blind-holes.
4. The cover sheet according to claim 1, wherein the filler is an optical cement filler.
5. The cover plate according to claim 1, wherein the first sub-cover plate, the second sub-cover plate is a glass sub-cover plate or a polymethylmethacrylate sub-cover plate.
6. The cover sheet according to claim 1, wherein the first sub-cover sheet, the second sub-cover sheet and the bent portion are of an integrally formed structure.
7. A display module, comprising: a flexible screen and the cover sheet of any one of claims 1 to 6; wherein,
the flexible screen comprises a first flexible sub-screen and a second flexible sub-screen;
the first flexible sub-screen and the second flexible sub-screen are foldable relative to each other;
and a first sub-cover plate of the cover plate is connected with the first flexible sub-screen, and a second sub-cover plate of the cover plate is connected with the second flexible sub-screen.
8. A folding electronic device, comprising: the display module of claim 7.
9. The folding electronic device of claim 8, further comprising: a first folded portion and a second folded portion; wherein,
the first folding part and the second folding part can be folded oppositely;
the first flexible sub-screen of the display module is connected with the first folding part, and the second flexible sub-screen of the display module is connected with the second folding part.
CN201911002018.4A 2019-10-21 2019-10-21 Cover plate, display module and foldable electronic equipment Active CN110740202B (en)

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PCT/CN2020/113047 WO2021077909A1 (en) 2019-10-21 2020-09-02 Cover plate, display module, and foldable electronic device

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Application Number Priority Date Filing Date Title
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CN110740202B true CN110740202B (en) 2021-12-07

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