WO2021007811A1

WO2021007811A1 - Flexible display apparatus, electronic device, and method for manufacturing flexible display apparatus

Info

Publication number: WO2021007811A1
Application number: PCT/CN2019/096378
Authority: WO
Inventors: 丁有翔
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2021-01-21
Also published as: CN113366557A

Abstract

A flexible display apparatus (30), comprising a support sheet (31) and a flexible screen (33). The flexible screen (33) comprises a foldable region (331), and a first non-folding region (333) and a second non-folding region (335) located at both sides of the foldable region (331). The support sheet (31) supports the foldable region (331) and at least part of the first non-folding region (333). A colloid layer (40) is provided between the support sheet (31) and at least part of the first non-folding region (333). An elastic colloid (50) is provided between the support sheet (31) and the foldable region (331). When the flexible screen (33) is in an unfolded state, the thickness of the colloid layer (40) is identical to that of the elastic colloid (50). When the flexible display apparatus (30) is in a flat state, the flexible colloid (50) is able to support the foldable region (331), preventing the flexible screen (33) from being dented, so that the flexible screen (33) keeps flat. When the flexible display apparatus (30) is folded or flattened, the elastic colloid (50) may be subjected to stretch deformation, and the elastic colloid (50) generates an elastic pulling force, so that the flexible screen (33) keeps adhered to the support sheet (31) without separation.

Description

Flexible display device, electronic equipment and manufacturing method of flexible display device

Technical field

This application relates to the field of display devices, and in particular to a flexible display device, an electronic device provided with the flexible display device, and a manufacturing method of the flexible display device.

Background technique

With the development of flexible screens, foldable electronic devices have appeared in the market. The existing foldable electronic devices generally realize the bending of the flexible screen through hinges. However, in the process of bending or flattening the foldable electronic device, the flexible screen and the hinge will relatively slide and rub against each other, which may easily cause damage to the flexible screen, thereby affecting the function of the flexible screen.

In the prior art, a support sheet is generally provided on the back of the bendable area of the flexible screen to prevent the flexible screen from being worn out. Specifically, the support sheet and the flexible screen are slidingly fitted to facilitate the flexible screen. Bend or flatten. However, since the support sheet and the flexible screen are slidingly attached, it means that there is a gap area between the support sheet and the flexible screen. When the flexible screen is in a flat state, the flexible screen is in a suspended state in the gap area, which is easy to produce The slight depressions make the flexible screen uneven and give users a bad visual experience. Moreover, when the flexible screen is bent or flattened, the flexible screen is subject to external force and is easily separated from the support sheet and arched, resulting in flexibility The screen display is invalid or damaged.

Summary of the invention

This application provides a flexible display device that can prevent the flexible screen from being recessed in the gap area and can prevent the flexible screen from being separated from the support sheet, an electronic device provided with the flexible display device, and a manufacturing method of the flexible display device.

In order to solve the above-mentioned problems, one aspect of the present application provides a flexible display device, including a support sheet and a flexible screen, the flexible screen including a bendable area and a first non-bending area on both sides of the bendable area and The second non-bending area, the support sheet supports the bendable area and at least part of the first non-bending area, and a gel is arranged between the support sheet and at least part of the first non-bending area Layer; an elastic gel is provided between the support sheet and the bendable area; when the flexible screen is in an unfolded state, the thickness of the gel layer and the elastic gel are both the first thickness.

Another aspect of the present application also provides an electronic device including a housing and a flexible display device. The housing includes a first frame, a second frame, and connected to the first frame and the second frame The flexible display device is arranged on the first frame, the second frame and the bendable device; the flexible display device includes a support sheet and a flexible screen, the flexible screen includes The bendable area and the first non-bending area and the second non-bending area located on both sides of the bendable area, wherein the support sheet supports the bendable area and at least part of the first non-bending area In the bending area, a colloid layer is provided between the support sheet and at least part of the first non-bending area; an elastic colloid is provided between the support sheet and the bendable area; when the flexible screen is in In the unfolded state, the thickness of the gel layer and the elastic gel are both the first thickness.

In another aspect of the present application, there is also provided a method for manufacturing a flexible display device. The flexible display device includes a flexible screen and a supporting sheet. The flexible screen includes a bendable area and first The non-bending area and the second non-bending area, the support sheet supports the bendable area and at least a part of the first non-bending area, and the manufacturing method includes the steps; A gel layer having a first thickness is arranged between the first non-bending area; and an elastic gel having a first thickness is arranged in the gap area formed between the support sheet and the bendable area, so The elastic glue is arranged on the edge areas of the opposite sides of the gap area, and is cured by pressing to bond the flexible screen and the supporting sheet.

In the electronic device provided by the present application, an elastic colloid is arranged between the bendable area of the flexible screen of the flexible display device and the support sheet. When the flexible display device is in a flat state, the elastic colloid can support the bendable area of the flexible screen , To prevent the flexible screen from being sunken and keep the entire flexible screen flat; when the flexible display device is bent or flattened, the elastic colloid can be stretched and deformed to provide sliding compensation for the relative sliding of the flexible screen and the support sheet, and at the same time, the flexible screen The elastic pulling force drawn to the support sheet keeps the flexible screen and the support sheet bonded without separation, thereby preventing the flexible screen from displaying failure or damage.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

FIG. 1 is a schematic diagram of the three-dimensional structure of the electronic device in the first embodiment of the present application.

FIG. 2 is a schematic diagram of the front structure of the electronic device in FIG. 1.

Fig. 3 is a schematic partial cross-sectional view along the line III-III in Fig. 1.

Fig. 4 is a schematic cross-sectional view taken along the line IV-IV in Fig. 1.

Fig. 5 is a schematic cross-sectional view of the electronic device in the second embodiment of the present application.

Fig. 6 is a schematic cross-sectional view of an electronic device in a third embodiment of the present application.

Fig. 7 is a schematic cross-sectional view of an electronic device in a fourth embodiment of the present application.

FIG. 8 is a schematic cross-sectional view of the electronic device in the fifth embodiment of the present application.

FIG. 9 is a schematic diagram of the front structure of the electronic device in the sixth embodiment of the present application.

FIG. 10 is a schematic cross-sectional view of the electronic device in FIG. 9.

FIG. 11 is a schematic diagram of the front structure of the electronic device in the seventh embodiment of the present application.

Fig. 12 is a schematic cross-sectional view of the electronic device in Fig. 11.

FIG. 13 is a schematic cross-sectional view of an electronic device in an eighth embodiment of the present application.

FIG. 14 is a flowchart of a manufacturing method of the flexible display device of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, and only In order to facilitate the description of the application and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be configured and operate in a specific orientation, and therefore cannot be understood as a limitation of the application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.

Please refer to FIGS. 1 to 4 together. The electronic device 100 provided by the first embodiment of the present application includes a housing 20 and a flexible display device 30. The housing 20 includes a first frame 21 and a second frame. 23 and a bendable device 25 connected between the first frame 21 and the second frame 23, the flexible display device 30 is disposed on the first frame 21 and the second frame 23 and the front face of the bendable device 25. The flexible display device 30 includes a supporting sheet 31, two connecting sheets 32 respectively connected to both sides of the supporting sheet 31, and a front surface of the supporting sheet 31 and the two connecting sheets 32. The flexible screen 33. The flexible screen 33 includes a screen body 332 and a protective layer 334 laminated on the side of the screen body 332 facing the support sheet 31. The protective layer 334 is fixedly attached to the back of the screen body 332. The flexible screen 33 includes a bendable area 331 corresponding to the bendable device 25 and a first non-bending area 333 and a second non-bending area 335 located on opposite sides of the bendable area 331. The supporting sheet 31 supports the bendable area 331 and at least part of the first non-bending area 333, and the connecting sheet 32 supports the portion of the flexible screen 33 that is not supported by the supporting sheet 31. A first gel layer 40 is provided between the support sheet 31 and at least part of the first non-bending area 333, and an elastic gel 50 is provided between the support sheet 31 and the bendable area 331. The first gel layer 40 and the elastic gel 50 are both disposed between the protective layer 334 and the supporting sheet 31. When the flexible screen 33 is in a flattened state, the thicknesses of the elastic gel 50 and the first gel layer 40 are both the first thickness, and the elastic gel 50 can support the bendable area 331 so that The flexible screen 33 remains flat; when the flexible screen 33 is bent or flattened, the elastic gel 50 is stretched and deformed, and the thickness of the elastic gel 50 is reduced to provide the flexible screen 33 and the support The sliding compensation of the relative sliding of the sheet 31, the elastic colloid 50 can also generate an elastic pulling force that pulls the flexible screen 33 toward the support sheet 31, so that the flexible screen 33 and the support sheet 31 remain bonded to each other. not separated.

In this embodiment, the front surface refers to the surface facing the light emitting surface of the flexible screen 33, and the back surface refers to the surface facing away from the light emitting surface of the flexible screen 33.

In this embodiment, the electronic device 100 is a mobile phone; the bendable device 25 is a hinge; the supporting sheet 31 is a bendable thin steel sheet; and the connecting sheet 32 is a plastic sheet. It can be understood that, in other embodiments, the electronic device 100 may be, but not limited to, a radio phone, a pager, a Web browser, a notebook, a calendar, and/or a PDA with a global positioning system (GPS) receiver, etc.; The bending device 25 may be other types of rotating shaft components; the supporting sheet 31 may be a liquid metal sheet or a polyester film sheet; the connecting sheet 32 may be a rubber sheet or a silicone sheet or the like.

Wherein, the supporting sheet 31 and the connecting sheet 32 may be connected as a whole by injection molding, or may be connected as a whole by bonding, screwing, or the like. Preferably, in this embodiment, the supporting piece 31 and the connecting piece 32 are connected as a whole by injection molding to simplify the supporting mechanism formed by the supporting piece 31 and the two connecting pieces 32, so that the The flexible display device 30 is lighter and thinner, and the electronic device 100 will also be lighter and thinner, which is convenient for users to carry and use.

As shown in FIG. 3, in this embodiment, the supporting sheet 31 supports the bendable area 331 and a part of the first non-bendable area 333 adjacent to the bendable area 331. A first gel layer 40 having a first thickness is provided between the supporting sheet 31 and a part of the first non-bending area 333 on a side adjacent to the bendable area 331, and the supporting sheet 31 is An elastic gel 50 (not shown in the figure) having a first thickness is arranged between the bendable regions 331.

Wherein, the elastic glue 50 is an elastic glue formed by pressing and curing of organic silica gel water or OCA optical glue, and is used for bonding the flexible screen 33 and the supporting sheet 31. In this embodiment, the elastic colloid 50 is formed by hydro-compression curing of organic silica gel.

Wherein, the first glue layer 40 can be a double-sided glue layer, or can be the same elastic glue layer as the elastic glue 50. Preferably, in this embodiment, the first colloid layer 40 is the same elastic colloid layer as the elastic colloid 50, so that the first colloid layer 40 and the elastic colloid 50 can be integrally arranged to have better When the flexible screen 33 is bent or flattened, the flexible screen 33 and the supporting sheet 31 slide relatively, and the first gel layer 40 and the elastic gel 50 are not easily separated. The bonding between the flexible screen 33 and the supporting sheet 31 is firm.

In other embodiments, the supporting sheet 31 may simultaneously support the bendable area 331 of the flexible screen 33 and the entire area of the first non-bending area 333.

It can be understood that the first non-bending area 333 and the second non-bending area 335 are relative terms, that is to say, in other embodiments, the supporting sheet 31 may simultaneously support all The bendable area 331 of the flexible screen 33 and at least a part of the second non-bending area 335, a first thickness with a first thickness is provided between the supporting sheet 31 and at least a part of the second non-bending area 335 A colloidal layer 40 has the same function as the previous embodiment, and will not be repeated here.

In a further preferred embodiment, the supporting sheet 31 can simultaneously support the bendable area 331 of the flexible screen 33, at least part of the first non-bending area 333, and at least part of the second non-bending area 335. Therefore, the first gel layer 40 provided on the side of the first bending region 333 and the second bending region 335 adjacent to the bendable region 331 can be integrated with the elastic gel 50, Therefore, the bonding effect between the flexible screen 33 and the supporting sheet 31 is better.

It should be noted that, in order to enable the flexible screen 33 to be smoothly bonded to the front surface of the supporting sheet 31 and the connecting sheet 32, between the protective layer 334 of the flexible screen 33 and the connecting sheet 32 A second gel layer 45 having a first thickness is provided.

Wherein, the second glue layer 45 can be a double-sided glue layer, or can be the same elastic glue layer as the elastic glue 50. Preferably, in this embodiment, the second gel layer 45 is the same elastic gel layer as the elastic gel 50. Therefore, in this embodiment, the first colloid layer 40, the second colloid layer 45, and the elastic colloid 50 are all organosilicone having a first thickness. When the flexible display device 30 is dispensed, Dispensing and pressing and curing can be synchronized, making the dispensing process convenient and quick.

Wherein, the first thickness may be any value from 0.05 mm to 0.15 mm. In this embodiment, the first thickness is preferably 0.1 mm.

It should be noted that the first thickness refers to the thickness of the first gel layer 40, the second gel layer 45 or the elastic gel 50 when the flexible screen 33 is in a flat state; it is understandable Yes, during the bending or flattening process of the flexible screen 33, the thickness of the elastic colloid 50 will decrease due to stretching, and the thickness of the first colloid layer 40 and the second colloid layer 45 will be substantially different. change.

In the present application, the elastic gel 50 is arranged between the bendable area 331 of the flexible screen 33 and the support sheet 31. When the flexible screen 33 is in a flattened state, the thickness of the elastic gel 50 and the setting The thickness of the colloid layer on the back of the non-bending area of the flexible screen 33 is the same, and the elastic colloid 50 can support the bendable area 331 to prevent the flexible screen 33 from being depressed and keep the entire flexible screen 33 flat , To bring a better visual experience to the user; when the flexible screen 33 is bent or flattened, the elastic gel 50 can be stretched and deformed to provide the flexible screen 33 and the supporting sheet 31 relatively sliding Sliding compensation, while generating an elastic pulling force that pulls the flexible screen 33 toward the supporting sheet 31, so that the flexible screen 33 and the supporting sheet 31 remain bonded without separation, thereby preventing the flexible screen 33 from displaying Failure or damage.

It is understandable that when the bendable area 331 of the flexible screen 33 and the support sheet 31 are completely bonded, the elastic glue 50 is equivalent to an elastic glue layer. At this time, the elastic glue 50 is not easy to When elastic deformation occurs, it is difficult for the flexible screen 33 to slide relative to the supporting sheet 31. When the flexible screen 33 is bent or flattened, the flexible screen 33 is easily damaged by pulling. Therefore, the elastic colloid 50 can only be arranged in a part of the gap area between the bendable area 331 of the flexible screen 33 and the support sheet 31, so that the elastic gel 50 can be elastically deformed relatively easily.

Specifically, referring to FIGS. 2 and 4, in this embodiment, the elastic gel 50 includes two first elastic gels 51 having a first thickness, and the two first elastic gels 51 are respectively disposed on the support Edge regions on opposite sides of the gap region 337 between the sheet 31 and the bendable region 331. Under the bonding effect of the first elastic glue 51, the left and right sides of the bendable area 331 of the flexible screen 33 are glued to the support sheet 31, and the first elastic glue 51 can support the The left and right sides of the bendable area 331 of the flexible screen 33, and the middle part of the bendable area 331 can be straightened to both sides, so that the flexible screen 33 can also be kept flat in the bendable area 331 .

Wherein, the first elastic glue 51 is a strip of glue, and the first elastic glue 51 extends in a direction perpendicular to the bending axis of the flexible screen 33. In this embodiment, the direction of the bending axis of the flexible screen 33 is the width direction of the flexible screen 33, that is, the first elastic gel 51 extends along the length direction of the flexible screen 33.

Wherein, the protective layer 334 can prevent the back of the flexible screen 33 from directly contacting the supporting sheet 31 and being worn away.

In this embodiment, the width of the support sheet 31 is equal to the width of the protective layer 334, that is, the two opposite outer sides of the support sheet 31 are flush with the two opposite outer sides of the protective layer 334, respectively.

In this embodiment, the protective layer 334 is a liquid metal sheet, and the liquid metal sheet is fixedly attached to the back of the screen 332.

It should be noted that the liquid metal mentioned in this application refers to heating the alloy to a molten state, and then cooling it at an ultra-fast cooling rate, so that the alloy crystal lattice will be solidified before the orderly arrangement of the crystal lattice, because it is in an amorphous state, like glass, so Also known as amorphous alloy, liquid metal or metallic glass. The characteristics of liquid metal are long-range disorder (short-range order), metastable state, isotropic physical properties to a certain extent, no exact melting point, glass transition temperature, etc. It has the characteristics of solid, metal, and glass. Under certain conditions, it has high strength, high hardness, plasticity, heat conduction and wear resistance. In other words, the liquid metal referred to in the present invention is substantially solid at room temperature, but some of its properties are close to liquid, so it is called liquid metal.

In other embodiments, the protective layer 334 may be a wear-resistant plastic sheet or a wear-resistant rubber sheet fixedly attached to the back of the screen 332.

In other embodiments, the width of the support sheet 31 may also be greater than the width of the protective layer 334, so as to better support the flexible screen 33 and more conveniently stack the flexible screen 33 on the support片31上.

As shown in Figure 4, the screen 332 includes a flexible screen 3321, a cover 3323 laminated on the front of the flexible screen 3321, and a light-shielding vinyl layer 3325 laminated on the back of the flexible screen 3321. . The flexible screen 3321 is the main body for displaying images. The protective layer 334 is fixedly attached to the side of the light-shielding vinyl layer 3325 facing away from the flexible screen 3321, that is, the protective layer 334 is fixedly attached to the back of the light-shielding vinyl layer 3325.

Wherein, the width of the cover 3323 is greater than the width of the flexible screen 3321, that is, the left and right outer sides of the cover 3323 respectively extend beyond the left and right outer sides of the flexible screen 3321. The light-shielding vinyl layer 3325 has the same width as the flexible screen 3321.

In this embodiment, the width of the flexible screen 3321 is smaller than the width of the cover 3323 and is retracted relative to the cover 3323, which is beneficial for the cover 3323 to better protect the flexible screen 3321; The width of the protective layer 334 is the same as the width of the flexible screen 3321.

In other embodiments, the width of the protective layer 334 may also be greater than the width of the flexible screen 3321 and extend relative to the flexible screen 3321, which is beneficial for the protective layer 334 to better protect the flexible screen. Board 3321.

Specifically, when dispensing glue, firstly, a first gel layer 40 with a first thickness is provided on the front surface of the support sheet 31 corresponding to the first non-bending area 333 adjacent to the bendable area 331. ; Secondly, on the front surface of the support sheet 31 corresponding to the bendable area 331 on the opposite left and right sides of the area along the length of the flexible screen 33 respectively dotted with the first thickness of the first elastic gel 51; Then the flexible screen 33 is laminated on the support sheet 31, so that the back of the protective layer 334 is pasted on the first colloidal layer 40 and the first elastic colloid 51; finally cured by pressing The first gel layer 40 and the first elastic gel 51 are sufficient. At this time, the first elastic glue 51 can seal the gap area 337 formed between the bendable area 331 of the flexible screen 33 and the support sheet 31, and prevent dust from entering the flexible screen 33 and the supporting sheet 31. Between the supporting pieces 31, and capable of supporting the two outer sides of the bendable area 331 and straighten the middle part of the bendable area 331 to the two outer sides, so that the bendable area 331 and the non-bending area 331 The area is kept flat; in addition, the first elastic glue 51 can keep the support sheet 31 and the protective layer 334 bonded at all times, thereby preventing the support sheet 31 from being separated from the flexible screen 33.

Of course, in other embodiments, the first colloid layer 40 and the first elastic colloid 51 may be set on the left and right sides of the back of the protective layer 334 first, and then the flexible screen 33 is laminated On the supporting sheet 31, the final pressing and curing process can achieve the same effect.

In other embodiments, the order in which the first gel layer 40 and the first elastic gel 51 are arranged can be exchanged, that is, the first elastic gel 51 is set first, then the first gel layer 40 is set, and then Laminating the flexible screen 33 on the supporting sheet 31, and finally pressing and curing, can achieve the same effect.

It should be noted that, in this embodiment, the second gel layer 45 and the elastic gel 50 are the same elastic gel layer. During glue dispensing, the first gel layer 40 and the second gel layer 45 are the same. The dispensing process can be performed simultaneously, so I won’t go into details here.

Please refer to FIG. 5. FIG. 5 is a schematic cross-sectional view of the electronic device in the second embodiment of the present application. The structure of the electronic device provided by the second embodiment of the present application is similar to that of the first embodiment, except that: in the second embodiment, the side of the support sheet 31 facing the flexible screen 33 corresponds to each A first groove 311 is opened at a position of the first elastic glue 51, each of the first grooves 311 extends along the length of the flexible screen 33, and each of the first elastic glues 51 is partially received in In the corresponding first groove 311.

In this embodiment, the width of the first groove 311 is smaller than the width of the first elastic gel 51.

In other embodiments, the width of the first groove 311 is equal to the width of the first elastic gel 51.

In this embodiment, the cross-section of the first groove 311 is rectangular, and the first groove 311 can increase the contact area between the first elastic gel 51 and the support sheet 31, so that the first The adhesion of an elastic glue 51 to the supporting sheet 31 and the protective layer 334 is stronger, and the dustproof effect is better.

In other embodiments, the cross section of the first groove 311 may be any shape such as a V shape, a circular arc shape, a trapezoid shape, or an irregular pattern.

Of course, in other embodiments, the side of the support sheet 31 facing the flexible screen 33 may only define one first groove 311 corresponding to one of the first elastic gels 51.

Please refer to FIG. 6, which is a schematic cross-sectional view of an electronic device in a third embodiment of the present application. The structure of the electronic device provided in the third embodiment of the present application is similar to that of the first embodiment, except that: in the third embodiment, the side of the flexible screen 33 facing the support sheet 31 corresponds to each A second groove 3342 is opened at the position of the first elastic rubber body 51. Specifically, a side of the protective layer 334 facing the supporting sheet 31 is opened at the position of each first elastic rubber body 51. The second grooves 3342, each of the second grooves 3342 extend along the length of the flexible screen 33, and each of the first elastic gels 51 is partially received in the corresponding second groove 3342 .

In this embodiment, the width of the second groove 3342 is smaller than the width of the first elastic gel 51.

In other embodiments, the width of the second groove 3342 is equal to the width of the first elastic gel 51.

In this embodiment, the cross section of the second groove 3342 is rectangular, and the second groove 3342 can increase the contact area between the first elastic gel 51 and the protective layer 334, so that the first The adhesion of an elastic glue 51 to the supporting sheet 31 and the protective layer 334 is stronger, and the dustproof effect is better.

In other embodiments, the cross-section of the second groove 3342 may have any shape such as a V shape, a circular arc shape, a trapezoid shape, or an irregular pattern.

Of course, in other embodiments, the side of the protective layer 341 facing the supporting sheet 31 may only define a second groove 3342 corresponding to one of the first elastic gels 51.

Please refer to FIG. 7, which is a schematic cross-sectional view of an electronic device in a fourth embodiment of the present application. The structure of the electronic device provided by the fourth embodiment of the present application is similar to that of the first embodiment, except that: in the fourth embodiment, the side of the support sheet 31 facing the flexible screen 33 corresponds to each A first groove 311 is opened in a position of the first elastic rubber body 51, and a second groove 311 is defined on the side of the protective layer 334 facing the supporting sheet 31 corresponding to the position of each first elastic rubber body 51. The width of the first groove 311 and the second groove 3342 are the same. When the flexible screen 33 is laminated on the support sheet 31, the first groove 311 and the second groove 3342 The grooves 3342 completely face each other to form a communicating portion, and each of the first elastic rubber bodies 51 is partially received in the communicating portion.

Wherein, the widths of the first groove 311 and the second groove 3342 are smaller than the width of the first elastic gel 51.

In this embodiment, the first groove 311 and the second groove 3342 can increase the contact area of the first elastic gel 51 with the protective layer 334 and the support sheet 31, so that the The adhesion of the first elastic glue 51 to the supporting sheet 31 and the protective layer 334 is stronger, and the dustproof effect is better.

In other embodiments, when the width of the first groove 311 and the second groove 3342 is smaller than the width of the first elastic gel 51, the first groove 311 and the second groove The 3342 can also be staggered to form a stepped connecting portion, and each of the first elastic gels 51 is partially contained in the stepped connecting portion.

In other embodiments, when the width of the first groove 311 and the second groove 3342 is smaller than the width of the first elastic gel 51, the first groove 311 and the second groove The 3342 can also be completely misaligned and not connected, and each of the first elastic gels 51 is partially contained in the first groove 311 and the second groove 3342.

Of course, in other embodiments, the width of the first groove 311 and the second groove 3342 may also be equal to the width of the first elastic gel 51, when the flexible screen 33 is laminated on the support sheet When 31 is up, the first groove 311 and the second groove 3342 completely face each other to form a communicating portion, and each of the first elastic gels 51 is partially contained in the communicating portion.

Please refer to FIG. 8. FIG. 8 is a schematic cross-sectional view of an electronic device in a fifth embodiment of the present application. The structure of the electronic device provided by the fifth embodiment of the present application is similar to that of the fourth embodiment, except that in the fifth embodiment, the widths of the first groove 311 and the second groove 3342 are Different, the width of the first groove 311 is smaller than the width of the second groove 3342. When the flexible screen 33 is laminated on the support sheet 31, the first groove 311 completely corresponds to the The second groove 3342, the first groove 311 and the second groove 3342 form a T-shaped communicating portion, and each of the first elastic rubber bodies 51 is partially received in the T-shaped communicating portion.

Wherein, the width of the second groove 3342 is smaller than the width of the first elastic gel 51.

In other embodiments, when the width of the first groove 311 is smaller than the width of the second groove 3342, the first groove 311 and the second groove 3342 may also be staggered to form one The step-shaped connecting portion, each of the first elastic gels 51 is partially contained in the step-shaped connecting portion.

In other embodiments, when the width of the first groove 311 is smaller than the width of the second groove 3342, the first groove 311 and the second groove 3342 may also be completely misaligned and not connected. Each of the first elastic gels 51 is partially received in the first groove 311 and the second groove 3342.

In other embodiments, when the widths of the first groove 311 and the second groove 3342 are different, the width of the first groove 311 may be greater than the width of the second groove 3342 but less than The width of the first elastic rubber body 51; similarly, the first groove 311 and the second groove 3342 may be connected or not, which will not be repeated here.

Of course, in other embodiments, when the width of the first groove 311 and the width of the second groove 3342 are not the same, the width of the larger groove may also be equal to that of the first elastic gel 51. When the flexible screen 33 is laminated on the supporting sheet 31, the first groove 311 is connected to the second groove 3342, and each of the first elastic gels 51 is partially accommodated in the corresponding connected Inside the first groove 311 and the second groove 3342.

Please refer to FIGS. 9 and 10 together. FIG. 9 is a schematic diagram of the front structure of the electronic device in the sixth embodiment of the present application; FIG. 10 is a schematic cross-sectional view of the electronic device in FIG. 9. The structure of the electronic device provided in the sixth embodiment of the present application is similar to the structure of the first embodiment, except that: in the sixth embodiment, a second elastic gel 52 is also provided in the middle area of the gap region 337 Specifically, the second elastic gel 52 is disposed in the middle area of the area corresponding to the bendable area 331 between the back of the protective layer 334 and the front of the support sheet 31, that is, the second The elastic gel 52 is disposed between the two first elastic gels 51. In this embodiment, the second elastic colloid 52 is a plurality of dot colloids distributed in a matrix. Specifically, the dot colloids located in the same row are arranged along the width direction of the flexible screen 33, and are located in the same column. The dotted colloids are arranged along the length direction of the flexible screen 33, and two adjacent dotted colloids are spaced apart from each other.

In this embodiment, the dot-shaped colloid is circular. A number of the dotted colloids can save the amount of glue; in addition, the dotted colloids are separated from each other, and the failure of any dotted colloid will not involve the dotted colloids in other positions, so that the supporting sheet 31 and the The adhesion of the protective layer 334 is stronger, and the dot-like glue makes the bendable area 331 not completely fit the support sheet 31, so the flexible screen 33 and the support sheet 31 can also face each other. Sliding prevents the flexible screen 33 from being pulled and damaged when it is bent or flattened.

In other embodiments, the dot-shaped colloid may be in any shape such as a rectangle, a diamond, a polygon, or an irregular figure.

In other embodiments, the second elastic gel 52 is a plurality of strips of gel extending in a direction perpendicular to the bending axis of the flexible screen 33 and spaced apart along the direction of the bending axis of the flexible screen 33, That is, a plurality of the strip-shaped glue bodies extend along the length direction of the flexible screen 33 and are arranged at intervals along the width direction of the flexible screen 33, and the strip-shaped glue bodies are similar to the first elastic glue body 51.

Obviously, in other embodiments, the side of the support sheet 31 facing the flexible screen 33 and/or the side of the protective layer 334 facing the support sheet 31 may also correspond to each second The elastic glue 52 is provided with a corresponding groove, and the second elastic glue 52 can be partially accommodated in the groove to increase the contact area with the protective layer 334 and the supporting sheet 31, so that the second elastic glue 52 The elastic glue 52 adheres to the support sheet 31 and the protective layer 334 more firmly, and prevents the flexible screen 33 from arching or warping in the middle of the bendable area 331 corresponding to the problem.

The structure of the groove is similar to the aforementioned first groove 311 and/or the aforementioned second groove 3342, which will not be repeated here.

Wherein, the second elastic glue 52 and the first elastic glue 51 may be cured by the same glue, or cured by different glues. Preferably, in this embodiment, the second elastic gel 52 is the same as the first elastic gel 51, and both are formed by water curing of organic silicone.

When dispensing glue, the first glue layer 40 and the first elastic glue 51 can be spotted first, and then the second elastic glue 52 can be spotted, and then the flexible screen 33 can be laminated on the support sheet 31 , And finally press and cure. Of course, the second elastic gel 52 can also be clicked first, then the first gel layer 40 and the first elastic gel 51 can be clicked, and then the flexible screen 33 can be laminated on the support sheet 31. Finally, pressing and curing can achieve the same effect.

Similarly, in this embodiment, the glue dispensing process of the first colloidal layer 40 and the second colloidal layer 45 can be performed synchronously, which will not be repeated here.

In this embodiment, the edge regions on opposite sides of the gap region 337 are provided with two first elastic gels 51, the middle region of which is provided with the second elastic gel 52, and the two first elastic gels 51 It can support the left and right sides of the bendable area 331 of the flexible screen 33, and the second elastic gel 52 can support the middle part of the bendable area 331 of the flexible screen 33, which is beneficial to ensure that the flexible screen 33 The surface is flat in the unfolded state.

Please refer to FIGS. 11 and 12 together. FIG. 11 is a schematic diagram of the front structure of the electronic device in the seventh embodiment of the present application; FIG. 12 is a schematic cross-sectional view of the electronic device in FIG. 11. The structure of the electronic device provided by the seventh embodiment of the present application is similar to the structure of the first embodiment, except that: in the seventh embodiment, two thirds are provided on opposite sides of the flexible display device 30. Elastic glue 53, each of the third elastic glues 53 is a strip-shaped glue extending along the length direction of the outer side of the flexible screen 33, and the two third elastic glues 53 are respectively used for bonding the flexible screen 33 on the two opposite outer sides of the bendable area 331 and the two outer sides of the supporting sheet 31, the third elastic gel 53 can also prevent external dust from entering between the protective layer 334 and the supporting sheet 31 between.

In this embodiment, the third elastic gel 53 is integrated with the first elastic gel 51. Specifically, the first elastic gel 51 is compressed from opposite sides of the gap area 337. The edges overflow and solidify to form the third elastic gel 53. In other words, when setting the first elastic gel 51, a sufficient amount of glue can be applied, and under the effect of compression, an appropriate amount of glue overflows from the opposite sides of the gap area 337, and then it is naturally cured. Or auxiliary blowing and curing form the third elastic gel 53.

In this embodiment, the first elastic glue 51 and the third elastic glue 53 are integrated and the same glue, and the first elastic glue 51 is used to bond the flexible screen 33 and the support sheet 31 Located on the inner surfaces of the opposite side edges of the gap area 337, the third elastic glue 53 is used to bond the flexible screen 33 and the supporting sheet 31 corresponding to the bendable area 331 Two outer sides, so that the bonding between the supporting sheet 31 and the flexible screen 33 is stronger.

In other embodiments, the third elastic glue 53 may be disposed on the flexible screen 33 on the two opposite outer sides of the bendable area 331 and the support sheet 31 by lateral dispensing. Between the corresponding two outer sides of the bendable area 331, that is, the first elastic gel 51 and the third elastic gel 53 are non-integral, and the third elastic gel 53 and the first elastic gel 51 There is a gap between. Wherein, the third elastic gel 53 and the first elastic gel 51 may be the same or different. Preferably, the third elastic colloid 53 is made of photosensitive adhesive, that is, after the first elastic colloid 51 is set up and pressed and cured, the third elastic colloid 53 is placed and irradiated by ultraviolet light. The curing is accelerated, and at this time, the photosensitive adhesive is cured into a solid glue with elasticity.

In other embodiments, the third elastic gel 53 may be dotted on the outer surface of the flexible screen 3321, the outer surface of the light-shielding vinyl layer 3325, the outer surface of the protective layer 334, and the support On the front side of the portion of the sheet 31 that extends beyond the protective layer 334, the third elastic gel 53 has a triangular cross section. The third elastic gel 53 can not only prevent external dust from entering the protective layer 334 and the support sheet 31 In between, it can also prevent external dust or water from entering the screen 332. Obviously, in other embodiments, the cross-section of the third elastic gel 53 can be rectangular, etc., and only the third elastic gel 53 is provided on the outer side of the flexible screen 3321 and the cover. The board 3323 extends beyond the back surface of the part of the screen body 332, the outer side surface of the light-shielding vinyl layer 3325, the outer side surface of the protective layer 334, and the support sheet 31 extends beyond the front surface of the protective layer 334.

It is understandable that the flexible screen 33 and/or the supporting sheet 31 can also be provided with corresponding grooves for receiving the first elastic gel 51, which will not be repeated here.

Please refer to FIG. 13, which is a schematic cross-sectional view of an electronic device in an eighth embodiment of the present application. The structure of the electronic device provided by the eighth embodiment of the present application is similar to the structure of the seventh embodiment, except that: in the eighth embodiment, the flexible screen 33 is located on two opposite sides of the bendable area 331 The side surface and the supporting sheet 31 are respectively provided with corresponding receiving grooves on the corresponding two outer surfaces of the bendable area 331, and the third elastic rubber body 53 is received in the corresponding receiving grooves.

Specifically, in this embodiment, the protective layer 334 of the flexible screen 33 is respectively provided with a first receiving groove 3341 with an oblique opening downward on two opposite outer sides of the bendable area 331, and the supporting sheet 31. Two second receiving grooves 312 with an oblique opening upward are respectively opened on the corresponding two outer side surfaces of the bendable area 331. The cross sections of the first receiving groove 3341 and the corresponding second receiving groove 312 are triangular. The third elastic gel 53 is received in the first receiving groove 3441 and the corresponding second receiving groove 312.

In this embodiment, the receiving groove can increase the contact area of the third elastic gel 53 with the protective layer 334 and the supporting sheet 31, so that the protective layer 334 and the supporting sheet 31 are more adhered. Firm; Furthermore, the third elastic gel 53 is accommodated in the receiving groove, so that the third elastic gel 53 does not protrude from the two opposite outer sides of the flexible screen 33, which has a good aesthetics.

In other embodiments, in the flexible display device 30 of the electronic device 100, only the protective layer 334 may be provided with a first housing with an oblique opening downward on two opposite outer sides of the bendable area 331. The grooves 3341 may also be provided with second receiving grooves 312 with an oblique opening on the corresponding two outer sides of the support piece 31 on the bendable area 331 respectively.

In other embodiments, the cross-sections of the first receiving groove 3441 and the second receiving groove 312 have other shapes such as a rectangle, a circular arc, or an irregular pattern.

In other embodiments, the first receiving groove 3441 and the second receiving groove 312 may also be a plurality of receiving grooves distributed in a zigzag pattern.

In other embodiments, the flexible screen 33 and/or the supporting sheet 31 can also be provided with a corresponding groove for receiving the first elastic gel 51, which will not be repeated here.

In other embodiments, the middle area of the gap area 337 can also be provided with a second elastic gel 52, which will not be repeated here.

It is understandable that in this application, in addition to the flexible screen, the flexible screen 33 may not include or only include any one or more or all of the light-shielding vinyl layer, the protective layer and the cover.

The first elastic gel 51, the second elastic gel 52, and the third elastic gel 53 of the foregoing embodiments are all elastic, so that the support sheet 31 can be pulled when the support sheet 31 slides relative to the flexible screen 33. When the relative position of the supporting sheet 31 and the flexible screen 33 is restored, the first elastic gel 51, the second elastic gel 52 and the third elastic gel 53 will automatically change due to their own elasticity. The contraction deformation returns to the original state without being pulled off. Wherein, the deformation degree of the first elastic colloid 51, the second elastic colloid 52 and the third elastic colloid 53 is proportional to the sliding distance of the supporting sheet 31 relative to the flexible screen 33, that is, it satisfies c ² = a ² + b ² , where c is the length of the first elastic gel 51, the second elastic gel 52, and the third elastic gel 53 after being stretched and deformed, and a is the length of the support sheet 31 relative to The sliding distance of the flexible screen 33, b is the distance between the support sheet 31 and the flexible screen 33 in the thickness direction. In other words, the stretching range of the first elastic gel 51, the second elastic gel 52, and the third elastic gel 53 satisfy

It is assumed that when the sliding direction of the supporting sheet 31 relative to the flexible screen 33 is X and the thickness direction of the supporting sheet 31 is Y, when the supporting sheet 31 slides relative to the flexible screen 33, the first elastic The colloid 51, the second elastic colloid 52, and the third elastic colloid 53 are stretched and deformed in a direction inclined with respect to the X and the thickness direction Y.

Please refer to FIG. 14, the present application also provides a method for manufacturing a flexible display device, the flexible display device includes the flexible screen 33 and the support sheet 31, the flexible screen 33 includes a bendable area 331 and located at The first non-bending area 333 and the second non-bending area 335 on both sides of the bendable area 331, the support sheet 31 supports the bendable area 331 and at least part of the first non-bending area 333 Specifically, the manufacturing method includes the following steps:

S1: A first gel layer 40 having a first thickness is provided between the supporting sheet 31 and at least part of the first non-bending area 333; and

S2: An elastic gel 50 having a first thickness is arranged in the gap area 337 formed between the support sheet 31 and the bendable area 331, and the elastic gel 50 is disposed on opposite sides of the gap area 337 The edge area is pressed and cured to bond the flexible screen 33 and the supporting sheet 31.

The first thickness refers to the thickness of the first gel layer 40 and the elastic gel 50 when the flexible screen 33 is in a flattened state; it can be understood that the flexible screen 33 is bent or flattened. During the process, the thickness of the elastic gel 50 will be reduced due to stretching, and the thickness of the first gel layer 40 will basically remain unchanged.

Wherein, the order of arrangement of the first gel layer 40 and the first elastic gel 51 can be exchanged, that is, the first elastic gel 51 is set first, then the first gel layer 40 is set, and then the first gel layer 40 is pressed and cured. The same effect can be achieved.

Wherein, the first glue layer 40 can be a double-sided glue layer, or can be the same elastic glue layer as the elastic glue 50. Preferably, in this embodiment, the first gel layer 40 is the same elastic gel layer as the elastic gel 50.

Specifically, the flexible screen 33 includes a screen body 332 and a protective layer 334 fixedly attached to the screen body 332 facing the support sheet 31, and the colloidal layer 40 and the elastic colloid 50 are disposed on the protective layer. The layer 334 and the supporting sheet 31 are used to bond the protective layer 334 and the supporting sheet 31.

Specifically, the elastic colloid 50 includes two first elastic colloids 51 respectively disposed at the edge regions on opposite sides of the gap area 337, the first elastic colloid 51 is a strip-shaped colloid, and the first elastic colloid 51 extends in a direction perpendicular to the bending axis of the flexible screen 33, that is, extends along the length direction of the flexible screen 33.

The manufacturing method of the flexible display device further includes a step of arranging a second elastic gel 52 in the middle area of the gap area 337.

Specifically, in some embodiments, the second elastic colloid 52 is a plurality of dot-shaped colloids distributed in a matrix.

In other embodiments, the second elastic colloid 52 is a plurality of strips of colloids extending in a direction perpendicular to the bending axis of the flexible screen 33 and along the bending of the flexible screen 33 A number of strips of colloids spaced in the direction of the axis, that is, extend along the length of the flexible screen 33 and are arranged at intervals along the width of the flexible screen 33.

Further, the manufacturing method of the flexible display device further includes setting the flexible screen 33 on two opposite outer sides of the bendable area 331 and the supporting sheet 31 on the corresponding two outer sides of the bendable area 331. The step of placing two third elastic gels 53 between the sides. Each of the third elastic glue bodies 53 is a strip-shaped glue body extending along the length direction of the outer side surface of the flexible screen 33.

Specifically, in some embodiments, the third elastic gel 53 is formed by the first elastic gel 51 overflowing from opposite sides of the gap region 337 under compression. The first elastic gel 51 and the third elastic colloid 53 are integrated and the same colloid.

In other embodiments, the third elastic colloid 53 is formed by point-setting by lateral dispensing, the first elastic colloid 51 and the third elastic colloid 53 are not integrated, and the third elastic colloid There is an interval between 53 and the first elastic gel 51.

It should be noted that the flexible screen 33 and/or the supporting sheet 31 may also be correspondingly provided with grooves for accommodating the elastic gel 50. For a more detailed description, please refer to the relevant content of the aforementioned electronic device 100. I won't repeat them here.

The above are the preferred embodiments of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of this application, several improvements and modifications can be made, and these improvements and modifications are also considered The protection scope of this application.

Claims

A flexible display device, comprising a support sheet and a flexible screen, the flexible screen comprising a bendable area and a first non-bending area and a second non-bending area located on both sides of the bendable area, characterized in that , The support sheet supports the bendable area and at least part of the first non-bending area, and a gel layer is arranged between the support sheet and at least part of the first non-bending area; the support sheet An elastic colloid is arranged between the bendable area;

Wherein, when the flexible screen is in an unfolded state, the thickness of the gel layer and the elastic gel are both the first thickness.
The flexible display device according to claim 1, wherein the elastic glue is cured by pressing to bond the flexible screen and the supporting sheet.
The flexible display device according to claim 1, wherein the flexible screen comprises a screen body and a protective layer laminated on the side of the screen body facing the support sheet, the colloid layer and the elastic colloid It is arranged between the protective layer and the supporting sheet.
The flexible display device according to claim 1, wherein when the flexible screen is in a flat state, the elastic gel has a first thickness, and the elastic gel supports the bendable area of the flexible screen, In order to keep the flexible screen flat; when the flexible screen is bent or flattened, the elastic colloid will be stretched and deformed, the thickness of the elastic colloid will decrease, and the elastic colloid will generate elastic tension to make the flexible The screen and the supporting sheet are kept bonded.
The flexible display device according to claim 1, wherein the elastic gel comprises two first edge regions respectively disposed at two side edge regions opposite to the gap region between the support sheet and the bendable region. Elastic colloid.
8. The flexible display device of claim 5, wherein the first elastic gel is a strip of gel, and the first elastic gel extends in a direction perpendicular to the bending axis of the flexible screen.
The flexible display device according to claim 5, wherein the elastic glue further comprises a second elastic glue disposed in the middle area of the gap area.
The flexible display device according to claim 7, wherein the second elastic colloid is a plurality of dot colloids distributed at intervals in a matrix, or extends along a direction perpendicular to the bending axis of the flexible screen. A number of strips of colloids are spaced apart along the direction of the bending axis of the flexible screen.
The flexible display device according to claim 5, wherein the elastic glue further comprises two opposite outer sides respectively used to bond the flexible screen to the bendable area and two corresponding outer surfaces of the support sheet. Two third elastic gels on the side.
The flexible display device according to claim 9, wherein the third elastic glue is integrated with the first elastic glue, and the first elastic glue is pressed against the gap area The edges on both sides overflow and solidify to form the third elastic colloid.
The flexible display device according to claim 9, wherein there is a gap between the third elastic gel and the first elastic gel, and the third elastic gel is disposed on the The flexible screen is located between the two opposite outer sides of the bendable area and the corresponding two outer sides of the supporting sheet.
The flexible display device according to claim 9, wherein the flexible screen is provided with a first receiving groove on two opposite outer sides of the bendable area and/or a second receiving groove is opened on the corresponding two outer sides of the support sheet. The receiving groove is used for receiving the third elastic colloid.
The flexible display device according to claim 1, wherein the side of the support sheet facing the flexible screen defines a first groove corresponding to the position of the elastic gel and/or the flexible screen faces the A second groove is opened on one side of the supporting sheet corresponding to the position of the elastic gel, and the elastic gel is partially received in the first groove and/or the second groove; the first groove and the second groove The cross section of the second groove is V-shaped, rectangular, arc-shaped or trapezoidal.
The flexible display device according to claim 13, wherein the supporting sheet is provided with a first groove, and the flexible screen is provided with a second groove, and when the flexible screen and the supporting sheet are laminated, the The first groove and the second groove are connected or disconnected.
An electronic device includes a housing, the housing includes a first frame, a second frame, and a bendable device connected between the first frame and the second frame, and is characterized in that: The electronic device further comprises the flexible display device according to any one of claims 1 to 14, the flexible display device being arranged on the first frame, the second frame and the bendable device.
A method for manufacturing a flexible display device. The flexible display device includes a flexible screen and a supporting sheet. The flexible screen includes a bendable area and a first non-bending area and a second non-bending area on both sides of the bendable area. In a non-bending area, the support sheet supports the bendable area and at least part of the first non-bending area, and the manufacturing method includes the following steps:

Disposing a gel layer having a first thickness between the supporting sheet and at least part of the first non-bending area; and

An elastic colloid with a first thickness is arranged in the gap area formed between the support sheet and the bendable area, and the elastic colloid is disposed on the opposite side edge areas of the gap area and cured by pressing To bond the flexible screen and the support sheet.
The manufacturing method according to claim 16, wherein the flexible screen comprises a screen body and a protective layer fixedly attached to the screen body facing the support sheet, the colloid layer and the elastic colloid are arranged Between the protective layer and the support sheet to bond the protective layer and the support sheet.
The manufacturing method according to claim 16, wherein the elastic colloid comprises two first elastic colloids respectively disposed at the edge regions on opposite sides of the gap area, and the first elastic colloids are strip-shaped colloids. The first elastic gel extends in a direction perpendicular to the bending axis of the flexible screen.
The manufacturing method according to claim 16, characterized in that the manufacturing method further comprises the step of arranging a second elastic colloid in the middle region of the gap area.
The manufacturing method according to claim 19, wherein the second elastic colloid is a plurality of dot colloids distributed in a matrix, or extends in a direction perpendicular to the bending axis of the flexible screen and extends along the A number of strips of colloids spaced apart in the direction of the bending axis of the flexible screen.
The manufacturing method according to claim 16, characterized in that, the manufacturing method further comprises disposing two outer sides of the flexible screen between two opposite outer sides of the flexible screen in the bendable area and the corresponding two outer sides of the support sheet. The third step of elastic colloid.
The manufacturing method according to claim 21, wherein the third elastic gel is formed by overflowing the first elastic gel from the opposite side edges of the gap area under compression, or the first elastic gel The three elastic gels are formed by point-setting by lateral dispensing.