CN111610654A - Frame structure and display device using the same - Google Patents

Frame structure and display device using the same Download PDF

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Publication number
CN111610654A
CN111610654A CN201910142505.4A CN201910142505A CN111610654A CN 111610654 A CN111610654 A CN 111610654A CN 201910142505 A CN201910142505 A CN 201910142505A CN 111610654 A CN111610654 A CN 111610654A
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CN
China
Prior art keywords
optical film
bottom plate
film group
frame
opening
Prior art date
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Pending
Application number
CN201910142505.4A
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Chinese (zh)
Inventor
李陈庆
张帅
西井武史
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Sharp Corp
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Sharp Corp
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Publication date
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Priority to CN201910142505.4A priority Critical patent/CN111610654A/en
Publication of CN111610654A publication Critical patent/CN111610654A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133608Direct backlight including particular frames or supporting means

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

A frame structure body is used for accommodating and fixing an optical diaphragm group and comprises a back plate and a middle frame which are integrated. The backboard comprises a bottom plate, a side part and a step part, wherein the side part is arranged around the bottom plate, the step part is connected with the side part and extends out of the inner side of the side part, an opening is formed around the step part, the size of the opening is larger than that of the optical film group, and the optical film group is arranged on the bottom plate. The middle frame is fixed on the step part and abuts against the optical film group on the bottom plate. The invention also provides a display device using the frame structure. The invention can conveniently install the optical diaphragm group on the back plate and can effectively prevent the optical diaphragm group from being damaged.

Description

Frame structure and display device using the same
Technical Field
The present invention relates to a frame structure used in the display field and a display device using the same, and more particularly, to a frame structure having an integrated back plate.
Background
A conventional display device, such as a liquid crystal television, generally includes a display screen, an optical film set, and a back plate, a plastic middle frame, and a plastic front frame for receiving and fixing the display screen and the optical film set, wherein the optical film set needs to be mounted and fixed on the back plate. However, the back plate, the plastic middle frame and the plastic front frame are of split structures, and many elements are involved in the assembling process, so that the assembling process is more. In addition, the internal structure and various components of the television set need to be protected in the assembling process, so that the assembling difficulty is high.
Various proposals are made to overcome the disadvantages of the television set structure during assembly. For example, patent document 1 discloses a television set structure including an integrated back plate provided with a double-layer cavity structure, which saves the structure of a plastic middle frame and a plastic front frame, and only needs to mount a screen assembly into one cavity of the back plate and mount an optical diaphragm into the other cavity of the back plate during the assembly process.
Documents of the prior art
Patent document
Patent document 1: chinese published patent CN207995252U (published in 2018 in 10 months and 19 days)
Disclosure of Invention
Problems to be solved by the invention
However, in the integrated back plate disclosed in patent document 1, since the size of the opening on the back plate is smaller than the size of the optical film set, the optical film set is not easily placed on the back plate through the opening, and since the optical film set is a very precise element, defects such as scratches and scratches are easily generated, which results in a reduction in assembly yield and a higher cost.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an optical film unit that can be easily mounted on a back plate and effectively prevent damage to the optical film unit.
Means for solving the problems
In one aspect, the present invention provides a frame structure for receiving and fixing an optical film set, including:
the integrated backboard comprises a bottom plate, a side part and a step part, wherein the side part is arranged around the bottom plate, the step part is connected with the side part and extends out of the inner side of the side part, an opening is formed around the step part, the size of the opening is larger than that of the optical film group, and the optical film group is arranged on the bottom plate; and
the middle frame is fixed on the step part and abuts against the optical film group on the bottom plate.
Another aspect of the present invention provides a display device, including:
a display module;
the optical diaphragm group is stacked with the display module; and
a frame structure, comprising:
the integrated backboard comprises a bottom plate, a side part and a step part, wherein the side part is arranged around the bottom plate, the step part is connected with the side part and extends out of the inner side of the side part, an opening is formed around the step part, the size of the opening is larger than that of the optical film group, and the optical film group is arranged on the bottom plate; and
the middle frame is fixed on the step part and bears the display module and abuts against the optical film group on the bottom plate.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the invention, the optical diaphragm group can be conveniently installed on the back plate and can be effectively prevented from being damaged in the assembling process.
Drawings
Fig. 1 is a schematic front view of a display device according to an embodiment of the invention.
Fig. 2 is an exploded schematic view of the display device of fig. 1.
Fig. 3 is a schematic cross-sectional view of fig. 1 taken along line III-III.
Fig. 4 is a cross-sectional view of fig. 1 taken along line IV-IV.
Fig. 5 is a schematic cross-sectional view of fig. 1 taken along line V-V.
Fig. 6 is a perspective view of a stand of the display device of fig. 1.
Fig. 7 is a schematic front view of a back plate of the display device of fig. 1.
Fig. 8 is an enlarged view of section VII of fig. 7.
Description of the main elements
Figure BDA0001978989230000031
Figure BDA0001978989230000041
Figure BDA0001978989230000051
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
While the embodiments of the invention are illustrated in the drawings, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size of layers and regions may be exaggerated for clarity.
Referring to fig. 1, a display device 100 provided in the present embodiment is illustrated by taking a liquid crystal television as an example. As shown in fig. 1, the front view of the display device 100 is a horizontally long rectangle.
A liquid crystal display device generally includes a backlight system that transmits light from the back surface of a liquid crystal display module to provide light necessary for display, and a liquid crystal display module including a light source that can emit light and various optical films (sheets) that control the light emitted from the light source. The structure of the backlight system is not particularly limited, and may be a direct-type (or direct-type, in which the light source is arranged directly below the display surface), an edge-light type (or side-light type, in which the light source is arranged on the side of the display surface), a flat light source type, or the like. In this embodiment, the backlight system of the display device 100 is of an edge light type, but is not limited to the edge light type.
As shown in fig. 2 and 3, the display device 100 includes a display module 10 and an optical film set 30 stacked together, and further includes a frame structure 50 for accommodating and fixing the display module 10 and the optical film set 30. The frame structure 50 includes a back plate 20 and a middle frame 40. In the present embodiment, as shown in fig. 2, the display module 10 and the optical film assembly 30 are both substantially rectangular in shape.
In this embodiment, the display module 10 is a liquid crystal display module, and may include a color filter substrate (not shown), an array substrate (not shown), and a liquid crystal layer (not shown) disposed between the color filter substrate and the array substrate and including liquid crystal molecules with optical characteristics changing with the application of an electric field, wherein an upper polarizer (not shown) is disposed on a side of the color filter substrate away from the array substrate, and a lower polarizer (not shown) is disposed on a side of the array substrate away from the color filter substrate.
As shown in fig. 3, the optical film assembly 30 is a multi-layer laminated structure, and may specifically include at least one of a diffusion sheet (not shown), a prism sheet (not shown), a polarizer (not shown), a brightness enhancement film (not shown), and other functional optical films.
Referring to fig. 3, the back plate 20 is an integrated body, and includes a bottom plate 21, a side portion 23 surrounding the periphery of the bottom plate 21 and connected to the bottom plate 21, and a step portion 25 connected to the side portion 23 and extending from the inner side of the side portion 23. The bottom plate 21 is disposed substantially on the bottom side of the optical film group 30, and the side portion 23 is disposed substantially on the side surface side of the optical film group 30. In this embodiment, the bottom plate 21 is rectangular in front view, the side portions 23 extend around the periphery of the bottom plate 21 to form a rectangular ring shape, and the step portions 25 extend around three sides of the periphery of the bottom plate 21 to form a substantially inverted U shape. The volume of the bottom plate 21 is large relative to the volume of both the side portions 23 and the step portions 25, so that the bottom plate 21 is essentially represented in fig. 2, the side portions 23 and the step portions 25 not being clearly visible in fig. 2 due to the relatively small volume.
Referring to fig. 3 again, the step portion 25 and the side portion 23 cooperate to form a first accommodating cavity 201, and the display module 10 is disposed in the first accommodating cavity 201; the bottom plate 21 and the side portion 23 cooperate to form a second receiving cavity 202, and the optical film set 30 is disposed in the second receiving cavity 202 and located on the bottom plate 21.
As shown in fig. 3, the step portion 25 surrounds and forms an opening 203, and the opening 203 communicates the first receiving cavity 201 and the second receiving cavity 202. The size of the opening 203 is larger than the size of the optical film stack 30. The profile of the opening 203 is defined by the end face 251 of the step 25 remote from the side 23 and the side 23. As mentioned above, the step 25 is extended to form a n-shape, and the outline of the opening 203 is substantially rectangular to match with the rectangular optical film set 30. As such, the end surface 251 of the step portion 25 surrounding the opening 203, which is away from the side portion 23, includes three end surfaces 251 connected in sequence, only one end surface 251 being shown in fig. 3. In the present embodiment, since each end surface 251 of the step portion 25 may not be a surface located on the same horizontal plane, for example, there may be a region that is a plane and a region that is a curved surface, or a plurality of regions located on different horizontal planes may be included. Therefore, the narrowest length of the opening 203 along the two-dimensional direction parallel to the bottom plate 21 is ensured to be greater than the length of the optical film group 30 in the same direction, and the narrowest width of the opening 203 along the two-dimensional direction parallel to the bottom plate 21 is ensured to be greater than the width of the optical film group 30, so as to ensure that the optical film group 30 can be smoothly placed into the second accommodating cavity 202 (or the bottom plate 21) through the opening 203 in a manner of moving towards the bottom plate 21 along the direction substantially along the normal line (shown by the dotted line in fig. 3) of the bottom plate 21 when the optical film group 30 is installed. That is, the projection of the stepped portion 25 on the base plate 21 in the normal direction of the base plate 21 and the projection of the optical film group 30 on the base plate 21 in the normal direction of the base plate 21 do not overlap.
When the display device 100 is assembled, the optical film assembly 30 is placed on the bottom plate 21 through the opening 203. Since the size of the opening 203 is larger than that of the optical film group 30, the optical film group 30 can be easily and smoothly placed on the base plate 21 through the opening 203 at the time of assembly, and damage to the optical film group 30 is effectively prevented.
Referring to fig. 3, in an embodiment, a connection portion 27 is connected between the side portion 23 and the step portion 25, and the step portion 25 is connected to the side portion 23 through the connection portion 27. The connecting portion 27 extends from one end of the side portion 23 away from the bottom plate 21 and is bent to extend toward the inner side of the side portion 23 in a manner substantially parallel to the side portion 23. In this embodiment, the connecting portion 27 substantially abuts against and contacts the side portion 23. In other embodiments, a majority of the connecting portion 27 may also be spaced a distance from the side portion 23.
As shown in fig. 2, in the present embodiment, the middle frame 40 extends substantially like a "u", and the middle frame 40 extends only around three sides of the rectangular display module 10.
As shown in fig. 3, the middle frame 40 is fixed on the step portion 25, and presses the optical film group 30 against the bottom plate 21, so as to fix the optical film group 30 from a first direction, which is substantially along a normal direction of the bottom plate 21. The middle frame 40 also carries the display module 10. The cross section of the middle frame 40 is substantially L-shaped, and includes a first frame portion 41 fixed to the step portion 25 and a second frame portion 43 connected to the first frame portion 41. The middle frame 40 is fixed to the step portion 25 by the first frame portion 41. In the present embodiment, the first frame portion 41 is directly provided and contacts the surface of the step portion 25 away from the bottom plate 21. Of course, the specific position where the middle frame 40 is fixed on the step portion 25 is not limited, and besides the surface of the middle frame 40 that is fixed on the step portion 25 and away from the bottom plate 21, the middle frame 40 may also be fixed on other positions of the step portion 25, for example, an end surface of the step portion 25 that is away from the side portion 23. The second frame portion 43 extends from the end of the first frame portion 41 away from the side portion 23 toward the bottom plate 21. The first frame portion 41 carries the display module 10, and the second frame portion 43 passes through the opening 203 and abuts against the optical film assembly 30.
Fixing mode of middle frame and back plate
The middle frame 40 is fixed on the step 25 of the back panel 20 by various methods conventionally used in the art, such as providing an adhesive between the middle frame 40 and the step 25 to bond and fix the two, fixing the middle frame 40 and the step 25 by mechanical elements, clamping the middle frame 40 and the step 25 by a clamp, or locking the middle frame 40 and the step 25 by other elements. Referring to fig. 4, the manner of fixing the middle frame 40 on the step portion 25 specifically includes: the first frame portion 41 of the middle frame 40 is opened with a mounting hole 411 (non-threaded hole), the step portion 25 is opened with a threaded hole 253 corresponding to the mounting hole 411 of the middle frame 40, and the middle frame 40 is fixed to the backboard 20 by aligning the threaded hole 253 with the mounting hole 411 and tightening a screw 70 into the threaded hole 253 of the step portion 25 through the mounting hole 411 of the middle frame 40.
In other embodiments, the manner of fixing the middle frame 40 to the step portion 25 may be specifically as follows: the first frame portion 41 of the middle frame 40 is opened with an assembly hole 411 (threaded hole), the step portion 25 is opened with a threaded hole 253 corresponding to the assembly hole 411 of the middle frame 40, and the bolt/screw 70 is inserted and locked in the assembly hole 411 of the middle frame 40 and the threaded hole 253 of the step portion 25 through the threaded hole 253 aligning with the assembly hole 411, so that the middle frame 40 and the back plate 20 are fixed.
As shown in fig. 2, the display device 100 further includes a tape layer 12 disposed between the display module 10 and the middle frame 40. The adhesive tape layer 12 is used to fixedly connect the display module 10 and the middle frame 40. The adhesive tape layer 12 extends to form a rectangular ring shape surrounding the periphery of the display module 10.
Referring to fig. 3, a buffer layer 19 is disposed between the second frame portion 43 of the middle frame 40 and the optical film set 30, and is used for protecting the optical film set 30 and preventing the middle frame 40 from scratching the optical film set 30.
As shown in fig. 2, the display device 100 further includes a light guide plate 14, a reflective sheet 16, and a rear cover 18 disposed on a side of the optical film assembly 30 away from the display module 10. In this embodiment, the light guide plate 14 and the reflective sheet 16 are both substantially rectangular and horizontally long, and the optical film set 30, the light guide plate 14 and the reflective sheet 16 are sequentially stacked on the same side of the back plate 20 close to the display module 10. The size of the reflective sheet 16, the light guide plate 14, and the like corresponds to the size of the optical film group 30, and may be placed on the chassis 21 through the opening 203. The rear cover 18 is disposed on a side of the back plate 20 away from the display module 10. The rear cover 18 is smaller in size than the rear plate 20 and partially covers the bottom plate 21 of the rear plate 20. A closed receiving space (not shown) is formed between the rear cover 18 and the back light chassis 21 to receive some electronic components of the display device 100, such as a motherboard, a power supply, etc.
Support frame
Referring to fig. 7 and 8, a bracket 60 is disposed on the back plate 20 to position the optical film set 30 from the second direction. The second direction is a direction substantially parallel to the bottom plate 21 (a normal direction perpendicular to the bottom plate 21). As shown in fig. 7, a plurality of brackets 60 are provided at intervals on the upper side of the back plate 20. In this embodiment, the number of the brackets 60 is 5. As shown in fig. 6 and 8, each of the brackets 60 includes a fixing portion 61 and a catch 63 connected to the fixing portion 61 and protruding from the fixing portion 61. The fixing portion 61 is fixed to the back plate 20. As shown in fig. 5, the optical film set 30 is provided with a positioning hole 31 penetrating therethrough, and the holding portion 63 penetrates through the positioning hole 31 of the optical film set 30, so that the optical film set 30 is relatively hung on the back plate 20.
The fixing portion 61 of the bracket 60 is fixed to the backboard 20 in various manners conventionally used in the art, such as clamping or locking the fixing portion 61 to the backboard 20 by means of mechanical parts. Referring to fig. 8, the manner of fixing the bracket 60 to the back plate 20 may specifically be: the fixing portion 61 is formed with a through hole 614, the step portion 25 is also formed with a screw hole 210 corresponding to the through hole 614 of the fixing portion 61, and the bracket 60 is fixed to the back plate 20 by a screw (not shown) passing through the through hole 614 of the fixing portion 61 and being fastened to the screw hole 210 of the step portion 25.
As shown in fig. 6, in one embodiment, the fixing portion 61 includes a first plate portion 611, a second plate portion 613 perpendicularly connected to the first plate portion 611, and a mounting portion 615 connected to the second plate portion 613. The retaining portion 63 is protruded from an end of the second plate portion 613 away from the first plate portion 611. The two opposite ends of the second plate portion 613 are respectively connected to the mounting portions 615, and each mounting portion 615 is provided with the through hole 614 penetrating through the mounting portion. The catch 63 is disposed between two mounting portions 615. As shown in fig. 5, the first plate portion 611 abuts against the side portion 23, and the second plate portion 613 is parallel to and opposite to the bottom plate 21.
Assembling method of display device
When assembling the display device 100, the reflective sheet 16, the light guide plate 14, the optical film sheet set 30, etc. are firstly placed on the bottom plate 21 of the back plate 20 in sequence through the opening 203 on the back plate 20, and since the size of the opening 203 is larger than the size of the optical film sheet set 30, the size of the light guide plate 14 and the reflective sheet 16, the light guide plate 14, the optical film sheet set 30 can be easily placed on the bottom plate 21 along the normal direction of the bottom plate 21 through the opening 203; then, the middle frame 40 is placed on the step portion 25 of the back plate 20, the middle frame 40 and the step portion 25 are fixed, and the middle frame 40 abuts against the optical film group 30; then the adhesive tape layer 12 is adhered to the periphery of the back surface of the display module 10; finally, the display module 10 with the adhesive tape layer 12 is placed on the middle frame 40.
The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit, and the up, down, left and right directions shown in the drawings are only for convenience of understanding, although the present invention is described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.

Claims (8)

1. A frame structure for housing and fixing an optical film group, comprising:
the integrated backboard comprises a bottom plate, a side part and a step part, wherein the side part is arranged around the bottom plate, the step part is connected with the side part and extends out of the inner side of the side part, an opening is formed around the step part, the size of the opening is larger than that of the optical film group, and the optical film group is arranged on the bottom plate; and
the middle frame is fixed on the step part and abuts against the optical film group on the bottom plate.
2. The frame structure according to claim 1, wherein a projection of the stepped portion on the chassis in a normal direction of the chassis does not overlap with a projection of the optical film group on the chassis in the normal direction of the chassis.
3. The frame structure of claim 1, wherein the back plate has a support disposed thereon to position the optical film stack.
4. The frame structure according to claim 1, wherein the middle frame includes a first frame portion fixed to the stepped portion and a second frame portion connected to the first frame portion, and the second frame portion passes through the opening and abuts against the optical film group.
5. A display device, comprising:
a display module;
the optical diaphragm group is stacked with the display module; and
a frame structure, comprising:
the integrated backboard comprises a bottom plate, a side part and a step part, wherein the side part is arranged around the bottom plate, the step part is connected with the side part and extends out of the inner side of the side part, an opening is formed around the step part, the size of the opening is larger than that of the optical film group, and the optical film group is arranged on the bottom plate; and
the middle frame is fixed on the step part and bears the display module and abuts against the optical film group on the bottom plate.
6. The display device according to claim 5, wherein a projection of the stepped portion on the chassis in a normal direction of the chassis does not overlap a projection of the optical film group on the chassis in the normal direction of the chassis.
7. The display device of claim 5, wherein the back plate has a support disposed thereon to position the set of optical films.
8. The display device according to claim 5, wherein the middle frame includes a first frame portion fixed to the stepped portion and a second frame portion connected to the first frame portion, and the second frame portion passes through the opening and abuts against the optical film group.
CN201910142505.4A 2019-02-26 2019-02-26 Frame structure and display device using the same Pending CN111610654A (en)

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CN208381864U (en) * 2018-05-21 2019-01-15 南京中电熊猫平板显示科技有限公司 A kind of display
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Application publication date: 20200901