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CN104777643B - A kind of assemble method of liquid crystal display die set - Google Patents

A kind of assemble method of liquid crystal display die set Download PDF

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Publication number
CN104777643B
CN104777643B CN201510155097.8A CN201510155097A CN104777643B CN 104777643 B CN104777643 B CN 104777643B CN 201510155097 A CN201510155097 A CN 201510155097A CN 104777643 B CN104777643 B CN 104777643B
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CN
China
Prior art keywords
display panel
assembling
retaining wall
liquid crystal
light
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Active
Application number
CN201510155097.8A
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Chinese (zh)
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CN104777643A (en
Inventor
任亮亮
杨龙卫
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InfoVision Optoelectronics Kunshan Co Ltd
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InfoVision Optoelectronics Kunshan Co Ltd
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Priority to CN201510155097.8A priority Critical patent/CN104777643B/en
Publication of CN104777643A publication Critical patent/CN104777643A/en
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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
    • 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
    • G02F1/1303Apparatus specially adapted to the manufacture of LCDs
    • 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
    • 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
    • G02F1/133325Assembling processes

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

A kind of assemble method of liquid crystal display die set, the assemble method include the following steps:A display panel is provided, which is pasted with the first polaroid and the second polaroid;The edge that a side surface of the second polaroid is pasted with along the display panel forms a circle light shield layer;Barricade is formed on the light shield layer;Side surface-assembled optical diaphragm group, light guide plate, lamp bar and the reflecting plate of barricade are formed in the display panel.The present invention forms barricade to replace glue frame on the surface of display panel, is easy to implement automatic assembling, improves assembly precision, realizes narrow frame design.

Description

Assembling method of liquid crystal display module
Technical Field
The invention relates to the technical field of liquid crystal displays, in particular to an assembling method of a liquid crystal display module.
Background
With the rapid development of light weight, thinness and miniaturization of electronic products, Liquid Crystal Displays (LCDs) are almost used as Display panels in various portable electronic products.
A Liquid Crystal display Module (LCM) is an important component of a Liquid Crystal display, and includes a display panel and a backlight Module, where the backlight Module generally includes a rubber frame, a back plate, a reflective plate, a light guide plate, a light bar, and an optical film group, and the back plate and the rubber frame form a frame structure, the reflective plate, the light guide plate, the light bar, and the optical film group are sequentially placed inside the rubber frame to be assembled on the frame structure, and the display panel is supported and fixed on the backlight Module through the rubber frame. In order to make the rubber frame be capable of being formed during preparation, the rubber frame is generally integrally manufactured into a frame structure and has certain width and thickness, and other elements are sequentially placed into the rubber frame during assembly, so that the conventional liquid crystal display module is generally assembled in a semi-automatic manner, the assembly process is more complicated, larger assembly tolerance (poor assembly precision) exists, and the requirement of the conventional electronic product on narrow frame design cannot be met.
Disclosure of Invention
The invention aims to provide an assembling method of a liquid crystal display module, which is convenient for realizing automatic assembly and improving the assembly precision.
The invention provides an assembling method of a liquid crystal display module, which comprises the following steps:
providing a display panel, wherein a first polarizer and a second polarizer are attached to the display panel;
forming a circle of light shielding layer along the edge of one side surface of the display panel, which is adhered with the second polarizer;
forming a retaining wall on the light shielding layer;
an optical film group, a light guide plate, a light bar and a reflecting plate are assembled on the surface of one side of the display panel, on which the retaining wall is formed.
Furthermore, the light shielding layer is a light shielding tape, and the light shielding tape is arranged in a square shape along the periphery of the display panel.
Furthermore, the retaining wall is arranged in a square shape along the periphery of the display panel.
Further, the width of the retaining wall is smaller than that of the light shielding layer, and the retaining wall is arranged along the outermost edge of the light shielding layer.
Further, the step of forming the retaining wall on the light shielding layer is dispensing and drying the light shielding layer to form the retaining wall.
Further, the step of forming the retaining wall on the light shielding layer is to attach an adhesive tape on the light shielding layer to form the retaining wall.
Furthermore, the upper surface and the lower surface of the adhesive tape are both provided with viscosity, and one side surface of the adhesive tape is attached to the shading layer.
Further, the step of assembling the optical film set, the light guide plate, the light bar and the reflective plate on the surface of the side of the display panel on which the retaining wall is formed includes:
assembling an optical film group, a light bar and a light guide plate in an accommodating space formed by the retaining wall and the display panel;
the reflecting plate is attached to the surface of one side of the retaining wall, which is far away from the display panel, and covers the opening of the accommodating space.
Further, the step of assembling the optical film set, the light bar and the light guide plate in the accommodating space formed by the retaining wall and the display panel includes:
placing an optical film group into the accommodating space;
mounting a light bar on one side surface of the light guide plate;
and placing the light guide plate and the light bar into the accommodating space.
Furthermore, the optical film group and the light guide plate are in clearance fit with the retaining wall.
In the embodiment of the invention, the optical film group, the light bar, the light guide plate and the reflecting plate are sequentially assembled after the adhesive tape is dispensed or attached to the lower surface of the display panel to form the retaining wall, so that the backlight module can be directly assembled on the display panel without assembling the backlight module additionally, the assembling process of the liquid crystal display module can be simplified, the automatic assembly is convenient to realize, the assembling precision and the assembling efficiency are improved, and the influence of the assembling tolerance among elements on the size of the module in the assembling process is reduced. Meanwhile, the retaining wall is adopted to replace the existing rubber frame structure, so that the influence of the process limit of the material (the rubber frame needs to have the width and the thickness which can be formed and the like) on the size of the module in the design of the rubber frame can be avoided, and the requirement of narrow frame design is met.
Drawings
FIG. 1 is a flow chart of an assembling method of a liquid crystal display module according to an embodiment of the invention.
Fig. 2A-2F are schematic structural diagrams of the liquid crystal display module in each step according to the embodiment of the invention.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and preferred embodiments.
FIG. 1 is a flow chart of an assembling method of a liquid crystal display module according to an embodiment of the invention. As shown in fig. 1, the assembling method of the liquid crystal display module of the present invention includes the following steps:
step 101: providing a display panel, wherein a first polarizer and a second polarizer are attached to the display panel;
step 102: forming a circle of light shielding layer along the edge of one side surface of the display panel, which is adhered with the second polarizer;
step 103: forming a retaining wall on the light shielding layer;
step 104: an optical film group, a light guide plate, a light bar and a reflecting plate are assembled on the surface of one side of the display panel, on which the retaining wall is formed.
Next, each step of the method for assembling the liquid crystal display module will be described in detail as follows.
Step 101: a display panel is provided, and a first polarizer and a second polarizer are attached to the display panel.
Referring to fig. 2A, the display panel 21 is shown in an inverted state, i.e., the second surface of the display panel 21 is on top, the first surface (the side for displaying) is on bottom, and the first polarizer 211 and the second polarizer 212 are respectively attached to the upper and lower surfaces of the display panel 21. In the embodiment of the invention, the display panel 21 refers to a completed assembly of components such as a liquid crystal panel, a color filter, a polarizer, and the like, and a semi-finished product (Open Cell) without a backlight module is installed, and the structure of the display panel 21 is known by those skilled in the art and will not be described herein again.
Step 102: and forming a circle of light shielding layer along the edge of one side surface of the display panel, which is adhered with the second polarizer.
As shown in fig. 2B, the light shielding layer 22 is formed on the surface of the display panel 21 to which the second polarizer 212 is attached, and in this embodiment, the light shielding layer 22 is a light shielding tape which is disposed in a square shape around the edge of the surface of the display panel 21. It is understood that in other embodiments of the present invention, the light-shielding layer 22 may be formed by other methods, for example, the light-shielding layer 22 may be an ink layer formed by ink-jet or printing, or a plating layer formed by sputtering or evaporation, or a chemical layer formed by performing a chemical treatment on the second polarizer 212, but is not limited thereto.
Step 103: and forming a retaining wall on the light shielding layer.
As shown in fig. 2C, a ring of retaining walls 23 is formed on the light-shielding layer 22 along the extending direction of the light-shielding layer 22, that is, the retaining walls 23 are arranged in a square shape along the periphery of the side surface of the display panel 21 where the second polarizer 212 is attached. An accommodating space 28 is formed between the retaining wall 23 and the display panel 21, the width of the retaining wall 23 is smaller than that of the light shielding layer 22, and the retaining wall 23 is formed at the outermost edge of the light shielding layer 22, so that the light shielding layer 22 can completely cover the upper part of the gap between the inner side surface of the retaining wall 23 and other elements, thereby preventing the backlight module from light leakage. In this embodiment, the retaining wall 23 is an adhesive tape, and the surface (lower surface) of the adhesive tape facing the light shielding layer 22 and the surface (upper surface) of the adhesive tape away from the light shielding layer 22 have adhesiveness. When the adhesive tape is attached, the adhesive tape may be directly attached to the light shielding layer 22, or may be attached to a transfer sheet of paper in a square shape according to the size of the display panel 21 and then transferred to the light shielding layer 22. In another embodiment of the present invention, a circle of glue is further coated on the light-shielding layer 22 by a glue dispensing process, and the glue is dried to form the retaining wall 23, wherein the glue dispensing process should ensure that the coated glue has a certain thickness and width after being dried, and the thickness of the retaining wall 23 should be greater than or equal to the total height of the assembled optical module group, the light guide plate, and the light bar inside the backlight module.
Step 104: and assembling an optical film group, a light guide plate, a light bar and a reflecting plate on the surface of one side of the display panel on which the retaining wall is formed.
First, as shown in fig. 2D, the optical film set 24 is placed in the accommodating space 28 (not shown, please refer to fig. 2C) formed by the retaining wall 23 and the display panel 21, and the optical film set 24 is in clearance fit with the retaining wall 23.
Next, as shown in fig. 2E, the light bar 25 is first installed on one side surface of the light guide plate 26, and then the combined light guide plate 26 and the light bar 25 are placed into the accommodating space 28 and stacked above the optical film set 24, and the other three side surfaces of the light guide plate 26, on which the light bar is not installed, are in clearance fit with the retaining walls 23. It is understood that, in other embodiments of the present invention, the light bars 25 may also be disposed on two sides, three sides, or four sides of the light guide plate 26.
Finally, as shown in fig. 2F, the reflection plate 27 is attached to the upper surface of the retaining wall 23, and the area of the reflection plate 27 is larger than the opening area of the accommodating space 28, so that the reflection plate covers the opening of the accommodating space 28.
As shown in fig. 2F, the assembled liquid crystal display module includes a display panel 21, a light shielding layer 22, a retaining wall 23, an optical film set 24, a light bar 25, a light guide plate 26 and a reflective plate 27. The first polarizer 211 and the second polarizer 212 are attached to the upper and lower surfaces of the display panel 21, the light shielding layer 22 is disposed on one side surface of the display panel 21 to which the second polarizer 212 is attached, the retaining wall 23 is formed on the light shielding layer 22, so as to form an accommodating space 28 (not shown, see fig. 2C) together with the display panel 21, the optical film set 24 and the light guide plate 26 are sequentially stacked in the accommodating space 28, the light bar 25 is located on one side of the light guide plate 26, and the reflective plate 27 is attached to the retaining wall 23 to cover an opening of the accommodating space 28.
According to the assembling method of the liquid crystal module, after the retaining wall is formed by dispensing or attaching the adhesive tape to the lower surface of the display panel, the optical film group, the light bar, the light guide plate and the reflecting plate are sequentially assembled, so that the backlight module can be directly assembled on the display panel without assembling the backlight module additionally, the assembling flow of the liquid crystal display module can be simplified, the automatic assembling is convenient to realize, the assembling efficiency and the assembling precision are improved, and the influence of the assembling tolerance among elements on the module size in the assembling process is reduced. Meanwhile, the retaining wall is adopted to replace the existing rubber frame structure, so that the influence of the process limit of the material (the rubber frame needs to have the width and the thickness which can be formed and the like) on the size of the module in the design of the rubber frame can be avoided, and the requirement of narrow frame design is met.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

1. The assembling method of the liquid crystal display module is characterized in that: the assembling method comprises the following steps:
providing a display panel, wherein a first polarizer and a second polarizer are attached to the display panel;
forming a circle of light shielding layer along the edge of one side surface of the display panel, which is adhered with the second polarizer;
dispensing and drying the light shielding layer to form a retaining wall;
assembling an optical film group, a light guide plate, a light bar and a reflecting plate on the surface of one side of the display panel, which is provided with the retaining wall; wherein,
the step of assembling the optical film group, the light guide plate, the light bar and the reflecting plate on the surface of one side of the display panel on which the retaining wall is formed comprises the following steps:
assembling an optical film group, a light bar and a light guide plate in an accommodating space formed by the retaining wall and the display panel;
the reflecting plate is attached to the surface of the side, away from the display panel, of the retaining wall and covers the opening of the accommodating space.
2. The method of assembling a liquid crystal display module of claim 1, wherein: the shading layer is a shading adhesive tape which is arranged in a square shape along the periphery of the display panel.
3. The method of assembling a liquid crystal display module of claim 1, wherein: the retaining wall is arranged in a square shape along the edge of the display panel.
4. The method of assembling a liquid crystal display module of claim 3, wherein: the width of this barricade is less than the width of this light shield layer, and this barricade sets up along the outermost edge of this light shield layer.
5. The method of assembling a liquid crystal display module of claim 1, wherein: the step of assembling the optical film set, the lamp strip and the light guide plate in the accommodating space formed by the retaining wall and the display panel comprises the following steps:
placing an optical film group into the accommodating space;
mounting a light bar on one side surface of the light guide plate;
and placing the light guide plate and the light bar into the accommodating space.
6. The method of assembling a liquid crystal display module of claim 5, wherein: the optical film group and the light guide plate are in clearance fit with the retaining wall.
CN201510155097.8A 2015-04-02 2015-04-02 A kind of assemble method of liquid crystal display die set Active CN104777643B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105005111A (en) * 2015-08-11 2015-10-28 深圳科利盟电子有限公司 Light guide plate and backlight module using same
CN108989508B (en) * 2018-08-24 2021-03-26 Oppo(重庆)智能科技有限公司 Display screen assembling method, display screen and electronic equipment
CN109410752A (en) * 2018-11-05 2019-03-01 深圳市山本光电股份有限公司 A kind of COB lamp bar adhesive method, COB lamp bar and display screen
CN114299817B (en) * 2021-12-29 2023-09-26 武汉华星光电半导体显示技术有限公司 Display module and display device

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CN102368122A (en) * 2011-09-14 2012-03-07 深圳市华星光电技术有限公司 Combination method and structure of liquid crystal display device, liquid crystal panel and back light module
CN202205000U (en) * 2011-08-05 2012-04-25 青岛海信电器股份有限公司 Liquid crystal module
CN102749736A (en) * 2012-04-06 2012-10-24 友达光电股份有限公司 Display device and assembling method thereof
CN203965762U (en) * 2014-07-21 2014-11-26 昆山龙腾光电有限公司 Liquid crystal indicator

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JP4973905B2 (en) * 2005-03-18 2012-07-11 Dic株式会社 Light blocking adhesive tape for LCD module fixing

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CN102368122A (en) * 2011-09-14 2012-03-07 深圳市华星光电技术有限公司 Combination method and structure of liquid crystal display device, liquid crystal panel and back light module
CN102749736A (en) * 2012-04-06 2012-10-24 友达光电股份有限公司 Display device and assembling method thereof
CN203965762U (en) * 2014-07-21 2014-11-26 昆山龙腾光电有限公司 Liquid crystal indicator

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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou

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