CN114446155B - Four-side curved flexible screen, display terminal and bonding method thereof - Google Patents
Four-side curved flexible screen, display terminal and bonding method thereof Download PDFInfo
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- CN114446155B CN114446155B CN202011204917.5A CN202011204917A CN114446155B CN 114446155 B CN114446155 B CN 114446155B CN 202011204917 A CN202011204917 A CN 202011204917A CN 114446155 B CN114446155 B CN 114446155B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 62
- 238000005452 bending Methods 0.000 claims abstract description 33
- 239000000758 substrate Substances 0.000 claims description 95
- 239000010410 layer Substances 0.000 claims description 54
- 230000003287 optical effect Effects 0.000 claims description 15
- 239000004568 cement Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000012044 organic layer Substances 0.000 claims description 7
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 5
- 239000011368 organic material Substances 0.000 claims description 4
- 238000010030 laminating Methods 0.000 abstract description 7
- 230000037303 wrinkles Effects 0.000 abstract description 3
- 239000006059 cover glass Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application discloses flexible screen of four sides, display terminal and laminating method thereof, wherein, a flexible screen of four sides, including glass apron and flexible panel, qu Rouxing screen of four sides is provided with the bending zone, the bending zone on the glass apron is provided with the thinning district, the thickness of thinning district is less than the thickness of the non-bending zone on the glass apron, the bending zone on the flexible panel is provided with half cutting district, half cutting district's thickness is less than the thickness of the non-bending zone on the flexible panel. According to the four-sided Qu Rouxing screen, the thinned area is arranged on the glass cover plate corresponding to the bending area, and the half-cut area is arranged on the flexible panel corresponding to the bending area so as to adapt to different bending radiuses, and the problems of bubbles or wrinkles and the like are prevented from being generated when the bending area is attached.
Description
Technical Field
The application relates to the technical field of flexible screens, in particular to a four-sided flexible screen, a display terminal and a bonding method thereof.
Background
Along with the continuous development of science and technology, various types of electronic equipment are gradually applied to life, study and work of people, and the curved surface screen and cambered surface screen equipment have wider application range due to good operation and visual effect; four-sided curved screens are attractive with their four sides and no frame on the front. Screens with larger bend radii and smaller bend depths have been mass produced. However, for CG (cover glass) with a bending radius R < 3mm and a bending angle of 90 ° or more, a conventional Gel-Pad bonding method is adopted, and a silicone Pad is generally used in the prior art to press and bond a flexible screen to the inner side of the glass cover plate.
However, the prior art attaching method often causes problems such as air bubbles or wrinkles between CG and panel, as shown in fig. 1. This is because it is difficult to control the order of contact between the Gel-pad and the CG with Gel-pad bonding. Deformation of Gel-pad itself causes CG side contact ahead of time, resulting in Panel being subjected to relatively large stresses, resulting in failure of the fit.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide a four-sided flexible screen, a display terminal, and a bonding method thereof, which can simplify the bonding process and avoid bonding failure.
In one aspect, the application provides a four-sided flexible screen, including glass apron and flexible panel, the four sides Qu Rouxing screen is provided with the bending zone, the bending zone on the glass apron is provided with the thinning district, the thickness of thinning district is less than the thickness of the non-bending zone on the glass apron, the bending zone on the flexible panel is provided with half cutting district, half cutting district's thickness is less than the thickness of the non-bending zone on the flexible panel.
Further, the four-sided Qu Rouxing screen comprises a first plane and a second plane, the first plane and the second plane are smoothly connected through a first curved surface, and the thinning area and the half-cutting area correspond to the first curved surface respectively.
Further, the glass cover plate comprises a glass substrate and an organic layer arranged on the lower layer of the glass substrate, the thinning area is arranged on the glass substrate, and the thinning area is filled with organic materials.
Further, the glass substrate comprises a first plane substrate forming the first plane, a second plane substrate forming the second plane, and a first curved substrate forming the first curved surface, wherein the first plane substrate, the second plane substrate and the first curved substrate are integrally formed.
Further, the thinned region is disposed on the first curved substrate, and the thickness of the glass substrate on the thinned region is smaller than the thicknesses of the first planar substrate and the second planar substrate.
Further, the flexible panel comprises a base layer, wherein the upper layer of the base layer is a polaroid layer, and the two layers are fixedly connected through optical cement; the lower layer of the base layer is a back plate supporting layer, and the two layers are fixedly connected through pressure sensitive adhesive.
Further, the half-cut area is arranged on the back plate supporting layer, and the half-cut area penetrates through the back plate supporting layer.
Further, four end points of the glass cover plate are provided with first avoidance areas, the end points of the first avoidance areas, which are close to the first plane substrate, are provided with first rounding corners, and the circle centers of the first rounding corners are close to the first plane substrate.
Further, the flexible panel is provided with a second avoidance area at a position corresponding to the first avoidance area, a second rounding angle is arranged at a position corresponding to the first rounding angle, and the direction of the second rounding angle is the same as the direction of the first rounding angle.
In another aspect, the present invention provides a display terminal provided with a four-sided Qu Rouxing screen as described above.
In still another aspect, the present invention provides a method for attaching a four-sided flexible screen, comprising:
fixedly connecting the glass cover plate and the flexible panel through optical cement, and performing plane lamination;
the assembled component is fixed on the rigid prosthesis, and the four-sided curved shape is formed.
The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:
according to the four-sided Qu Rouxing screen, the thinned area is arranged on the glass cover plate corresponding to the bending area, and the half-cut area is arranged on the flexible panel corresponding to the bending area so as to adapt to different bending radiuses, and the problems of bubbles or wrinkles and the like are prevented from being generated when the bending area is attached.
According to the four-sided Qu Rouxing screen attaching method, the glass cover plate and the flexible panel are attached in a planar state, and then the glass cover plate and the flexible panel are bent and formed; the laminating flow can be simplified, the laminating failure is avoided, and the defect that the laminating yield of the conventional flexible curved surface screen is low is overcome.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a schematic illustration of a prior art defect created between a glass cover plate and a flexible panel;
FIG. 2 is a schematic view of a glass cover plate according to an embodiment of the present disclosure;
FIG. 3 is a cross-sectional view of a glass cover plate at the location of a thinning area provided in an embodiment of the present application;
FIG. 4 is a schematic structural view of a flexible panel according to an embodiment of the present disclosure;
FIG. 5 is a cross-sectional view of a flexible panel at a half-cell location provided by an embodiment of the present application;
fig. 6 is a schematic structural diagram of a four-sided flexible screen according to an embodiment of the present application.
Wherein,
1. a glass cover plate; 2. a flexible panel; 301. a first plane; 302. a second plane; 303. a first curved surface; 11. a glass substrate; 12. an organic layer; 13. a thinning region; 101. a first planar substrate; 102. a second planar substrate; 103. a first curved substrate; 104. a first avoidance zone; 105. a first rounded corner; 21. a base layer; 22. a polarizer layer; 23. a back plate support layer; 24. an optical adhesive; 25. a pressure sensitive adhesive; 26. a half-cutting area; 201. a first planar substrate; 202. a second planar substrate; 203. a first curved substrate; 204. a second avoidance zone; 205. a second rounded corner; 4. a rigid prosthesis.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1-4 in detail, in one aspect, the application provides a four-sided flexible screen, including a glass cover plate 1 and a flexible panel 2, the four-sided Qu Rouxing screen is provided with a bending region, a thinned region 13 corresponding to the bending region is provided on the glass cover plate 1, a half-cut region 26 corresponding to the bending region is provided on the flexible panel 2, the thickness of the thinned region is smaller than the thickness of a non-bending region on the glass cover plate, and the thickness of the half-cut region is smaller than the thickness of the non-bending region on the flexible panel.
The four-sided Qu Rouxing screen comprises a first plane 301 and a second plane 302, the first plane 301 and the second plane 302 are smoothly connected through a first curved surface 303, and the thinned area and the half-cut area correspond to the first curved surface respectively; namely, the thinning region and the half-cut region are formed on the first curved surface.
The glass cover plate comprises a glass substrate 11 and an organic layer 12 arranged on the lower layer of the glass substrate 11, wherein the thinning area is arranged on the glass substrate, and the thinning area is filled with organic materials. The glass substrate comprises a first planar substrate 101 forming the first plane 301, a second planar substrate 102 forming the second plane 302, and a first curved substrate 103 forming the first curved surface 303, wherein the first planar substrate, the second planar substrate and the first curved substrate are integrally formed.
Further, the thinned region is disposed on the first curved substrate, and the thickness of the thinned region is smaller than the thicknesses of the first planar substrate and the second planar substrate.
The flexible panel comprises a base layer, wherein the upper layer of the base layer is a polaroid layer, and the two layers are fixedly connected through optical cement; the lower layer of the base layer is a back plate supporting layer, and the two layers are fixedly connected through pressure sensitive adhesive. Further, the half-cut area is arranged on the back plate supporting layer, and the half-cut area penetrates through the back plate supporting layer.
In addition, the four end points of the glass cover plate 1 are all provided with first avoidance areas 104, the end points of the first avoidance areas 104 close to the first plane substrate 101 are provided with first rounding corners 105, and the circle centers of the first rounding corners 105 are close to the first plane substrate 101. The flexible panel 2 is provided with a second avoiding area 204 at a position corresponding to the first avoiding area 104, and is provided with a second rounding 205 at a position corresponding to the first rounding 105, and the direction of the second rounding is the same as the direction of the first rounding.
It should be noted that, the corner cutting avoidance is performed at four corner positions of the glass cover plate, and because the glass cover plate is to be bent and folded to form a tetrahedron structure, one corner position needs to be cut off, so that two side edges formed during folding are prevented from interfering.
In another aspect, the present invention provides a display terminal provided with a four-sided Qu Rouxing screen as described above.
In still another aspect, the present invention provides a method for attaching a four-sided flexible screen, comprising:
fixedly connecting the glass cover plate and the flexible panel through optical cement, and performing plane lamination;
the assembled component is fixed on the rigid prosthesis, and the four-sided curved shape is formed.
Example 1
As shown in fig. 2 and 3, a glass cover plate 1 includes a glass substrate 11 and an organic layer 12 disposed under the glass substrate, the thinned region 13 is disposed on the glass substrate 11, and the thinned region 13 is filled with an organic material. The glass substrate 11 includes a first planar substrate 101, a second planar substrate 102, and a first curved substrate 103 connecting the first planar substrate 101 and the second planar substrate 102, where the first planar substrate 101, the second planar substrate 102, and the first curved substrate 103 are integrally formed.
The first plane substrate is located at the middle position of the glass cover plate and used for forming a region where the main surfaces of the four-sided flexible screen are straight, the second plane substrate is located at the four sides of the glass cover plate and used for forming a region where the side surfaces of the four-sided flexible screen are straight, and the first curved substrate is located at the connecting region of the first plane substrate and the second plane substrate and used for forming a bending region of the four-sided flexible screen.
The four end points of the glass cover plate are respectively provided with a first avoiding area 104, the end points of the first avoiding areas, which are close to the first plane substrate, are provided with first rounding corners 105, and the circle centers of the first rounding corners are close to the first plane substrate. When the rounded corners are used for forming the four-sided Qu Rouxing screen, smooth transition is performed.
FIG. 2 is a schematic view of a glass cover plate according to an embodiment of the present disclosure; FIG. 3 is a cross-sectional view of a glass cover plate in a thinned region according to an embodiment of the present application; as shown in fig. 3, the thinned region 13 is disposed on the first curved substrate, and the thickness of the thinned region glass substrate 11 is smaller than the thicknesses of the first planar substrate and the second planar substrate, and the area of the dashed line in fig. 2 is the thinned region.
The thinned region is disposed on the first curved substrate, but the width thereof is not limited to be the same as the width of the first curved substrate, and is specifically set according to different application scenarios or different bending radii when specifically set.
In a specific arrangement, the design details of the glass cover plate are as follows:
thickness of non-thinned region: 0.1mm to 0.5mm
Width of thinned region: 3.14mm or more;
thickness of thinned region: 0.07mm or less;
organic layer thickness: 0.07mm or more;
and (3) attaching OCA on the organic layer, wherein the viscosity of the OCA is more than 5N/inch.
Example two
As shown in fig. 4-5, the flexible panel 2 includes a first planar substrate 201, a second planar substrate 202, and a first curved substrate 203 that connects the first planar substrate 201 and the second planar substrate 202, where the first planar substrate, the second planar substrate, and the first curved substrate are integrally formed.
The first plane substrate is located at the middle position of the flexible panel and is used for forming a region where the main surfaces of the four-sided flexible screen are straight, the second plane substrate is located at the four sides of the flexible panel and is used for forming a region where the side surfaces of the four-sided flexible screen are straight, and the first curved substrate is located at the connecting region of the first plane substrate and the second plane substrate and is used for forming a bending region of the four-sided flexible screen.
As shown in fig. 5, the flexible panel includes a base layer 21, wherein a polarizer layer 22 is disposed on the upper layer of the base layer 21, and the two layers are fixedly connected by an optical adhesive 24; the lower layer of the base layer 21 is a back plate supporting layer 23, and the two layers are fixedly connected through a pressure sensitive adhesive 25. Further, the half-cut region 26 is disposed on the back support layer 23, and penetrates through the back support layer to form a blank region after the back support layer is cut through, the dotted line region in fig. 4 is the half-cut region, and the blank region in fig. 5 is the half-cut region. The half-cut regions 26 on the left and right sides in fig. 5 correspond to the half-cut regions formed at the left and right first curved surfaces 203 in fig. 4, respectively.
The half-cut region is provided on the first curved substrate, but the width is not limited to be the same as the width of the first curved substrate, and is set specifically according to different application scenes or different bending radii in specific setting, and is generally set to a width of 3.14mm or more.
The back support layer may be cut out in a single band shape or in a plurality of band-shaped areas, and the shape and the position of the cut-out may be different depending on the specific application, the bending radius, and the like.
In addition, the four end points of the flexible panel 2 are respectively provided with a second avoidance area 204, the end points of the second avoidance area 204, which are close to the first plane substrate 201, are provided with second rounded corners 205, and the circle centers of the second rounded corners 205 are close to the first plane substrate 201. When the rounded corners are used for forming the four-sided Qu Rouxing screen, smooth transition is performed.
Example III
As shown in fig. 5, a method for attaching a four-sided flexible screen includes:
fixedly connecting the glass cover plate and the flexible panel through optical cement, and performing plane lamination;
the assembled component is fixed on the rigid prosthesis, and the four-sided curved shape is formed.
The prosthesis is made of rigid materials and is used for fixing and forming after the glass cover plate and the flexible panel are combined to form a four-sided curved shape. In practice, the rigid prosthesis 4 may be a die of a machining tool or may be an internal support material of a flexible screen, the external surface of which is shaped as a tetrahedron to be shaped.
The optical adhesive is OCA optical adhesive. The OCA optical adhesive (Optically Clear Adhesive) is a double-sided adhesive tape without a matrix material, which is prepared by making an optical acrylic adhesive into a base-free material, then attaching a release film (protective film) on an upper bottom layer and a lower bottom layer respectively, and has the characteristics of no color, transparency, light transmittance of more than 90%, good bonding strength, capability of curing at room temperature or medium temperature, small curing shrinkage and the like.
When specifically processing, after fixed with glass apron and flexible panel through the optical cement, carry out the plane pressfitting through laminating gyro wheel or other compression fittings, make the two attached even, avoid laminating failure, overcome the defect that current flexible curved surface screen laminating yield is low.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed.
Claims (8)
1. A four-sided flexible screen comprising a glass cover plate and a flexible panel, wherein the four-sided Qu Rouxing screen is provided with a bending region, and the bending region on the glass cover plate is provided with a thinning region; the flexible panel comprises a base layer and a back plate supporting layer arranged on the lower layer of the base layer, a half-cutting area is arranged in a bending area on the flexible panel, the half-cutting area is arranged on the back plate supporting layer, and the half-cutting area penetrates through the back plate supporting layer;
the four-sided Qu Rouxing screen comprises a first plane and a second plane, the first plane and the second plane are smoothly connected through a first curved surface, and the thinning area and the half-cutting area correspond to the first curved surface respectively;
the glass cover plate and the flexible panel are fixedly connected through optical cement, and are bent to form a four-sided curved shape after being subjected to plane lamination.
2. A four sided Qu Rouxing screen according to claim 1, wherein the glass cover plate comprises a glass substrate and an organic layer disposed beneath the glass substrate, the thinned region being disposed on the glass substrate, the thinned region being filled with organic material.
3. A four sided Qu Rouxing screen according to claim 2, wherein the glass substrate comprises a first planar substrate forming the first plane, a second planar substrate forming the second plane, a first curved substrate forming the first curved surface, the first planar substrate, the second planar substrate, the first curved substrate being integrally formed.
4. A four sided Qu Rouxing screen according to claim 3, wherein the thinned regions are provided on the first curved substrate and the thickness of the glass substrate on the thinned regions is less than the thickness of the first and second planar substrates.
5. The four-sided Qu Rouxing screen according to claim 1, wherein the upper layer of the base layer is a polarizer layer and the two layers are fixedly connected by an optical adhesive; the base layer is fixedly connected with the backboard supporting layer through pressure sensitive adhesive.
6. The four sided Qu Rouxing screen of claim 1, wherein the four end points of the glass cover plate are each provided with a first relief area, the first relief area is provided with a first rounded corner at an end point near the first planar substrate, and the center of the first rounded corner is near the first planar substrate.
7. The four sided Qu Rouxing screen of claim 6, wherein the flexible panel is provided with a second relief zone at a location corresponding to the first relief zone, a second rounded corner is provided at a location corresponding to the first rounded corner, and the second rounded corner is oriented in the same direction as the first rounded corner.
8. A four-sided Qu Rouxing screen bonding method applied to any one of claims 1 to 7, comprising:
fixedly connecting the glass cover plate and the flexible panel through optical cement, and performing plane lamination;
the assembled component is fixed on the rigid prosthesis, and the four-sided curved shape is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011204917.5A CN114446155B (en) | 2020-11-02 | 2020-11-02 | Four-side curved flexible screen, display terminal and bonding method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011204917.5A CN114446155B (en) | 2020-11-02 | 2020-11-02 | Four-side curved flexible screen, display terminal and bonding method thereof |
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| CN114446155B true CN114446155B (en) | 2024-02-09 |
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| CN115273686B (en) * | 2022-08-19 | 2023-12-26 | 京东方科技集团股份有限公司 | Cover plate, manufacturing method thereof and curved surface screen |
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| CN114446155A (en) | 2022-05-06 |
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