CN114927063A - Folding display device - Google Patents
Folding display device Download PDFInfo
- Publication number
- CN114927063A CN114927063A CN202210593924.1A CN202210593924A CN114927063A CN 114927063 A CN114927063 A CN 114927063A CN 202210593924 A CN202210593924 A CN 202210593924A CN 114927063 A CN114927063 A CN 114927063A
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- folding
- segmented
- display device
- layer
- area
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- 239000000758 substrate Substances 0.000 claims abstract description 66
- 239000010410 layer Substances 0.000 claims description 52
- 239000003292 glue Substances 0.000 claims description 33
- 239000012790 adhesive layer Substances 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000002346 layers by function Substances 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000011218 segmentation Effects 0.000 description 11
- 239000011241 protective layer Substances 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
Images
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Abstract
The application discloses folding display device, including folding district and non-folding district, folding display device includes: a display panel; the back plate is arranged on one side of the display panel; the segmented substrate structure is arranged on one side, far away from the display panel, of the back panel; defining the cavity area of the segmented substrate structure as a segmented area, the central axis of the segmented area coinciding with the central axis of the folding zone. The technical effect of the application lies in that the support of the substrate structure in the folding display device is improved, and the production cost is reduced.
Description
Technical Field
The application relates to the field of display, in particular to a folding display device.
Background
In the existing foldable screen products, the display module uses a metal substrate as a support, and the most common is SUS (steel sheet).
In order to provide the steel sheet with bending properties, it is common practice to make the thickness of the steel sheet as thin as 50 μm or less, and another common way is to pattern the areas involved in bending and etch them into a hollowed-out form. Both of these approaches require high cost, both for thinning and patterning. In addition, the support performance of the thinned steel sheet is reduced, and the patterned hollow area is easy to deform, so that the yield of the display device is greatly reduced.
Disclosure of Invention
An object of the application is to provide a folding display device for solve the technical problem that the substrate structure of the existing folding display device is high in preparation cost, poor in supporting performance and easy to deform.
To achieve the above object, the present application provides a foldable display device including a folding area and a non-folding area, the foldable display device including: a display panel; the back plate is arranged on one side of the display panel; the segmented substrate structure is arranged on one side, far away from the display panel, of the back plate; defining the cavity area of the segmented substrate structure as a segmented area, the central axis of the segmented area coinciding with the central axis of the folding zone.
Further, the segmented substrate structure comprises a segmented glue layer and a segmented substrate; the segmented adhesive layer is arranged on one side, far away from the display panel, of the back plate; the segmented substrate is arranged on one side, far away from the back plate, of the segmented adhesive layer.
Further, the segmented glue layer is of a single-layer or laminated structure; the single-layer segmented adhesive layer comprises optical adhesive or pressure-sensitive adhesive; the segmentation glue film of stromatolite includes the sandwich structure that is mingled with the functional layer between two-layer glue film, the functional layer includes one in the cotton layer of bubble, black polyimide layer, the resin layer.
Furthermore, one of the laminated segmented adhesive layers, which is attached to the back plate, is of a whole-layer structure, and the other adhesive layer is subjected to segmentation treatment.
Further, the bending radius of the folding area of the folding display device is defined as R, the width of the segment area of the segment glue layer is defined as a first width D, and the first width is defined as the width in the direction perpendicular to the central axis of the folding area of the folding display device; wherein the relationship between the first width D and the bend radius R is: pi R is not less than D and not more than 3 Pi R.
Further, a first direction and a second direction perpendicular to each other are defined, and the folding region of the folding display device is folded along the first direction or the second direction.
Furthermore, the segmented substrate is made of one of a plastic plate, glass, a steel sheet, a titanium alloy, a copper alloy and a carbon fiber plate.
Further, the width of the segment position of the segment substrate is a second width d, which is defined as a width in a direction perpendicular to the central axis of the folding zone; defining the second width d as: d is more than or equal to 0 and less than or equal to D.
Further, the segment areas of the segment glue layers coincide with the central axis of the folding area along the symmetry axis in the folding direction; the position of the segments of the segmented substrate is located at the central axis of the fold region.
Further, the folding display device further includes: the polaroid is arranged on one side of the display panel, which is far away from the back plate; the optical adhesive is arranged on one side of the polaroid, which is far away from the display panel; and the cover plate is arranged on one side of the optical adhesive, which is far away from the polaroid.
The substrate structure has the technical effects that the substrate is changed into the sectional type substrate structure, the substrate structure is not required to be thinned and etched, the substrate manufacturing process is simplified, and the production cost is reduced. Meanwhile, the conditions that the support performance is not enough due to the fact that the substrate is too thin, the film layer above the substrate is easy to deform and the like can be avoided, and the yield of the folding display device is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a folding display device according to embodiment 1 or 2 of the present application;
fig. 2 is a schematic view of the folded display device of embodiment 1 or 2 of the present application after being folded;
fig. 3 is a schematic view of embodiment 1 of the present application before folding in a first direction;
fig. 4 is a schematic view of embodiment 2 of the present application before folding in the second direction.
Description of the reference numerals:
10. a folding zone; 20. a non-folding region;
100. a segmented substrate structure; 200. a back plate 300, a display panel; 400. a polarizer; 500. optical cement; 600. a cover plate;
110. segmenting the substrate; 120. segmenting the adhesive layer;
111. a segmentation position; 121. and (6) segmenting the area.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the present application, are given by way of illustration and explanation only, and are not intended to limit the present application. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
Example 1
As shown in fig. 1 to fig. 3, the present embodiment provides a foldable display device, which includes a folding region 10 and a non-folding region 20 surrounding the folding region 10, and the foldable display device includes, in order from bottom to top, a segmented substrate structure 100, a back plate 200, a display panel 300, a polarizer 400, an optical adhesive 500, and a cover plate 600, and may further include other conventional structures of display panels, which are not listed in this application. The cavity area of the segmented substrate structure 100 is defined as a segmented area, the central axis of which coincides with the central axis of the folding zone 10.
The segmented substrate structure 100 includes a segmented substrate 110 and a segmented adhesive layer 120, wherein the segmented substrate 110 is a bottom layer, and the segmented adhesive layer 120 is disposed on an upper surface of the segmented substrate 110.
The segmented substrate 110 is made of one of a plastic plate, glass, a steel sheet, a titanium alloy, a copper alloy and a carbon fiber plate, and plays a role in supporting the whole display device.
The segment substrate 110 is provided with a segment position 111, and the segment position 111 is arranged corresponding to a center line (a dotted line position in fig. 1 or 3) of the folding area 10 of the folding display panel, that is, the segment position 111 is located at the center line of the folding area 10.
The segment area 121 of the segment glue layer 120 coincides with the centre axis of the fold area 10 along the symmetry axis in the folding direction.
Defining a bending radius R of the folding area 10 of the folding display device, defining a width of the segment area 121 of the segment glue layer 120 as a first width D, the first width being defined as a width in a direction perpendicular to a central axis of the folding area 10 of the folding display device, wherein a size relationship between the first width D and the bending radius R is as follows: d is more than or equal to pi R and less than or equal to 3 pi R. The specific size of the first width can be adjusted according to simulation and actual verification.
The width of the segment position 111 of the segment substrate 110 is a second width d, which is defined as the width in the direction perpendicular to the central axis of the folding zone 10, and the second width d is defined as: d is greater than or equal to 0 and less than or equal to D, in order to ensure the supportability of each film material on the upper layer of the segmented substrate structure 100 and avoid the film layer sinking, the segmented position 111 should be as small as possible, and according to the simulation result, the minimum value of the second width of the segmented position 111 may be 0, so that the second width D is finally defined as D greater than or equal to 0 and less than or equal to D.
A first direction and a second direction perpendicular to each other are defined, the first direction is an up-down direction, the second direction is a left-right direction, and the folding direction of the folding display device in this embodiment is the first direction, i.e. folding up and down (see fig. 3). The display device after bending can be seen with reference to fig. 2.
The back plate 200 is disposed on the upper surface of the segmented substrate structure 100, and functions to support, protect, and cushion.
The display panel 300 is disposed on the upper surface of the backplate 200 to implement a light emitting display function.
The polarizer 400 is arranged on the upper surface of the display panel, and the function of the polarizer 400 is mainly to reduce the reflection of incident light from the screen to the outside, reduce the interference of reflected light to the display effect of the screen, and enable a user to clearly see the display content of the screen.
The optical adhesive 500 is disposed on the upper surface of the polarizer 400, and has an adhesive effect and does not affect the light output of the light.
The cover plate 600 is disposed on the upper surface of the optical cement 500 to block external scratches, and in this embodiment, the cover plate 600 may be UTG or CW. Because the UTG and CW are expensive, in this embodiment, a PWO protective layer, that is, a PET protective layer with glue, may be further disposed on the upper layer of the cover plate 600.
The specific structure of these layers is not detailed in this embodiment, but falls within the scope of the present application, and the operations of opening a camera, opening a sensor, etc. on the segmented substrate structure 100 and the layers thereon can be performed according to practical situations without limitation.
The foldable display panel of this embodiment includes a terminal area and a display area, and the terminal area includes non-display structures such as a bending area, a bonding area, and a routing area, which are not shown in the drawings of this embodiment, but fall within the scope of the present embodiment.
The technical effect of the folding display device is that the substrate is changed into a sectional substrate structure, the substrate structure is not required to be thinned and etched, the substrate manufacturing process is simplified, and the production cost is reduced. Meanwhile, the conditions that the support performance is not enough due to the fact that the substrate is too thin, the film layer above the substrate is easy to deform and the like can be avoided, and the yield of the folding display device is improved.
Example 2
As shown in fig. 1, fig. 2 and fig. 4, the present embodiment provides a foldable display device, which includes a folding region 10 and a non-folding region 20 surrounding the folding region 10, and the foldable display device includes, in order from bottom to top, a segmented substrate structure 100, a back plate 200, a display panel 300, a polarizer 400, an optical adhesive 500, and a cover plate 600, and may further include other conventional structures of the display panel, which are not listed in this application. The cavity area of the segmented substrate structure 100 is defined as a segmented area, the central axis of which coincides with the central axis of the folding zone 10.
The segmented substrate structure 100 includes a segmented substrate 110 and a segmented adhesive layer 120, wherein the segmented substrate 110 is a bottom layer, and the segmented adhesive layer 120 is disposed on an upper surface of the segmented substrate 110.
The segmented substrate 110 is made of one of a plastic plate, glass, a steel sheet, a titanium alloy, a copper alloy and a carbon fiber plate, and plays a role in supporting the whole display device.
The segment substrate 110 is provided with a segment position 111, and the segment position 111 is arranged corresponding to a center line (a dotted line position in fig. 1 or 3) of the folding area 10 of the folding display panel, that is, the segment position 111 is located at the center line of the folding area 10.
The segment area 121 of the segment glue layer 120 coincides with the central axis of the fold area 10 along the axis of symmetry in the folding direction.
Defining a bending radius R of the folding area 10 of the folding display device, defining a width of the segment area 121 of the segment glue layer 120 as a first width D, the first width being defined as a width in a direction perpendicular to a central axis of the folding area 10 of the folding display device, wherein a size relationship between the first width D and the bending radius R is as follows: d is more than or equal to pi R and less than or equal to 3 pi R, and the specific size of the first width can be adjusted according to simulation and actual verification.
The width of the segment position 111 of the segment substrate 110 is a second width d, which is defined as the width in the direction perpendicular to the central axis of the folding zone 10, and the second width d is defined as: d is greater than or equal to 0 and less than or equal to D, in order to ensure the supportability of each film material on the upper layer of the segmented substrate structure 100 and avoid the occurrence of film sinking, the segmented position 111 should be as small as possible, and according to the simulation result, the minimum value of the second width of the segmented position 111 may be 0, so that the second width D is finally defined as D greater than or equal to 0 and less than or equal to D.
A first direction and a second direction perpendicular to each other are defined, the first direction is a vertical direction, the second direction is a left-right direction, and the folding direction of the folding display device in this embodiment is the second direction, i.e., left-right folding (see fig. 4). The folded display device can be seen with reference to fig. 2.
The back plate 200 is disposed on the upper surface of the segmented substrate structure 100, and functions to support, protect, and cushion.
The display panel 300 is disposed on the upper surface of the backplate 200 to implement a light emitting display function.
The polarizer 400 is arranged on the upper surface of the display panel, and the function of the polarizer 400 is mainly to reduce the reflection of incident light from the screen to the outside, reduce the interference of reflected light to the display effect of the screen, and enable a user to clearly see the display content of the screen.
The optical adhesive 500 is disposed on the upper surface of the polarizer 400, and has an adhesive effect and does not affect the light output of the light.
The cover plate 600 is disposed on the upper surface of the optical cement 500 to block external scratches, and in this embodiment, the cover plate 600 may be UTG or CW. Because the UTG and CW are expensive, a PWO protective layer, that is, a PET protective layer with glue, may be further disposed on the upper layer of the cover plate 600 in this embodiment.
The specific structure of these layers is not detailed in this embodiment, but falls within the scope of the present application, and the operations of camera opening, sensor opening, etc. can be performed on the segmented substrate structure 100 and the layers thereon according to the actual situation without limitation.
The foldable display panel of this embodiment includes a terminal area and a display area, and the terminal area includes non-display structures such as a bending area, a bonding area, and a routing area, which are not shown in the drawings of this embodiment, but fall within the scope of the present embodiment.
The technical effect of the folding display device is that the substrate is changed into a sectional substrate structure, the substrate structure is not required to be thinned and etched, the substrate manufacturing process is simplified, and the production cost is reduced. Meanwhile, the conditions that the support performance is not enough due to the fact that the substrate is too thin, the film layer above the substrate is easy to deform and the like can be avoided, and the yield of the folding display device is improved.
The foregoing detailed description is directed to a foldable display device provided in an embodiment of the present application, and specific examples are applied herein to explain the principles and embodiments of the present application, and the description of the foregoing embodiments is only used to help understanding the method and its core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A foldable display device comprising a folding area and a non-folding area, the foldable display device comprising:
a display panel;
the back plate is arranged on one side of the display panel; and
the segmented substrate structure is arranged on one side of the back plate far away from the display panel;
defining the cavity area of the segmented substrate structure as a segmented area, the central axis of the segmented area coinciding with the central axis of the folding zone.
2. The folded display device of claim 1, wherein the segmented substrate structure comprises a segmented glue layer and a segmented substrate;
the segmented adhesive layer is arranged on one side, far away from the display panel, of the back plate;
the segmented substrate is arranged on one side, far away from the back plate, of the segmented adhesive layer.
3. The folding display apparatus of claim 2,
the segmented adhesive layer is of a single-layer or laminated structure;
the single-layer segmented adhesive layer comprises optical adhesive or pressure-sensitive adhesive;
the laminated subsection glue layer comprises a sandwich structure with a functional layer sandwiched between two glue layers, and the functional layer comprises one of a foam layer, a black polyimide layer and a resin layer.
4. A folding display device according to claim 3,
one of the laminated segmented adhesive layers, which is attached to the back plate, is of a whole-layer structure, and the other adhesive layer is subjected to segmented treatment.
5. The folding display apparatus of claim 2,
defining the bending radius of a folding area of the folding display device as R, the width of a subsection area of the subsection glue layer as a first width D, and the first width is defined as the width in the direction vertical to the central axis of the folding area of the folding display device; wherein the relationship between the first width D and the bend radius R is: pi R is not less than D and not more than 3 Pi R.
6. The folding display device of claim 1,
a first direction and a second direction perpendicular to each other are defined, and a folding area of the folding display device is folded along the first direction or the second direction.
7. The folding display device of claim 2,
the segmented substrate is made of one of a plastic plate, glass, a steel sheet, a titanium alloy, a copper alloy and a carbon fiber plate.
8. A folding display device according to claim 5,
the width of the segment position of the segment substrate is a second width d, which is defined as the width in the direction perpendicular to the central axis of the folding zone;
defining the second width d as: d is more than or equal to 0 and less than or equal to D.
9. The folding display apparatus of claim 2,
the segment area of the segment glue layer is coincident with the central axis of the folding area along the symmetry axis in the folding direction;
the position of the segments of the segmented substrate is located at the central axis of the fold region.
10. The folding display device of claim 1, further comprising:
the polaroid is arranged on one side of the display panel, which is far away from the back plate;
the optical adhesive is arranged on one side of the polaroid, which is far away from the display panel; and
the cover plate is arranged on one side, away from the polaroid, of the optical cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593924.1A CN114927063A (en) | 2022-05-27 | 2022-05-27 | Folding display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593924.1A CN114927063A (en) | 2022-05-27 | 2022-05-27 | Folding display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114927063A true CN114927063A (en) | 2022-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210593924.1A Pending CN114927063A (en) | 2022-05-27 | 2022-05-27 | Folding display device |
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| Country | Link |
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| CN (1) | CN114927063A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115394197A (en) * | 2022-08-29 | 2022-11-25 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
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