CN110058647B - Bearing substrate and flexible display module - Google Patents
Bearing substrate and flexible display module Download PDFInfo
- Publication number
- CN110058647B CN110058647B CN201910231613.9A CN201910231613A CN110058647B CN 110058647 B CN110058647 B CN 110058647B CN 201910231613 A CN201910231613 A CN 201910231613A CN 110058647 B CN110058647 B CN 110058647B
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- portions
- flexible display
- patterns
- carrier substrate
- bendable region
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
Abstract
The invention discloses a bearing substrate and a flexible display module. The carrier substrate includes: two non-bending regions and a bending region. The bendable region is disposed between the two non-bendable regions. The bendable region comprises a plurality of first portions and a plurality of second portions, wherein the plurality of first portions comprise a plurality of protruding patterns arranged along a first direction. The plurality of second portions are adjacent to the plurality of first portions and include a plurality of recessed patterns arranged along a second direction, wherein the first direction is perpendicular to the second direction. The bearing substrate and the flexible display module can ensure the performance of certain smoothness after the flexible display module is bent, meet certain bending performance, and avoid the touch discomfort of deformation, subsidence and the like of the flexible display screen during touch control.
Description
Technical Field
The present invention relates to a substrate and a display module, and more particularly, to a carrier substrate and a flexible display module.
Background
In the prior art, the flexible display module has the advantages of being light, thin, not fragile, bendable, wearable and the like, and is receiving more and more attention. However, the flexible display module is light and thin and easy to bend, but the stiffness of the flexible display module is not enough, and the flatness is difficult to ensure when the flexible display module is bent to be flattened.
Therefore, it is necessary to provide a carrier substrate and a flexible display module to solve the problems of the prior art.
Disclosure of Invention
In view of this, the present invention provides a carrier substrate and a flexible display module, which can ensure a certain flatness performance of the flexible display module after bending, meet a certain bending performance, and avoid touch discomfort such as deformation and sinking of a flexible display screen during touch control.
An objective of the present invention is to provide a carrier substrate, in which a plurality of patterns are disposed on a back surface of a bendable region, so as to ensure a certain flatness of a flexible display module after bending, and meet a certain bending performance.
Another objective of the present invention is to provide a flexible display module having the above carrier substrate, which can avoid the touch discomfort caused by the deformation and sinking of the flexible display screen during touch.
To achieve the above objective, an embodiment of the present invention provides a carrier substrate for carrying a flexible display panel, wherein the carrier substrate comprises: two non-bending regions and a bending region. The bendable region is disposed between the two non-bendable regions. The bendable region comprises a front surface adjacent to the flexible display screen and a back surface far away from the flexible display screen, wherein the front surface is provided with a flat surface, and the back surface is provided with a plurality of patterns.
In an embodiment of the present invention, the back surface of the bendable region includes: a plurality of first portions including a plurality of protrusion patterns arranged in a first direction; and a plurality of second portions adjacent to the plurality of first portions and including a plurality of recess patterns arranged along a second direction, wherein the first direction is perpendicular to the second direction.
In an embodiment of the invention, the plurality of first portions and the plurality of second portions are arranged in a staggered manner, wherein each of the plurality of first portions abuts at least one of the plurality of second portions, and the plurality of first portions do not abut each other.
In an embodiment of the present invention, a shape of any one of the plurality of first portions and the plurality of second portions is rectangular.
In an embodiment of the invention, the bendable region further defines at least one rectangular region group, the rectangular region group is composed of two first portions and two second portions, wherein the rectangular region group has a diagonal length, and the diagonal length is greater than 0 and less than or equal to 1 cm.
In an embodiment of the invention, each of the plurality of protrusion patterns has a cross-sectional shape, and the cross-sectional shape includes any one of a circle, an ellipse, a polygon, a wave and a straight line; and the plurality of concave patterns are respectively provided with a cross section shape, and the cross section shape comprises any one of a circle, an ellipse, a polygon, a wave shape and a straight line shape.
In an embodiment of the invention, a material of the bendable region includes an elastic glue.
In an embodiment of the present invention, the bendable region includes: a wrinkled layer and a glue layer. An upper surface and a lower surface of the corrugated layer are respectively provided with the plurality of patterns, wherein the lower surface of the corrugated layer forms the back surface of the bendable region. The glue layer is arranged on one upper surface of the corrugated layer to cover a plurality of patterns on the upper surface of the corrugated layer, wherein the glue layer forms the front surface of the bendable region.
In an embodiment of the invention, each of the plurality of patterns has a cross-sectional shape, and the cross-sectional shape includes any one of a circle, an ellipse, a polygon, a wave and a straight line.
Furthermore, another embodiment of the present invention provides a flexible display module, wherein the flexible display module comprises: a flexible display screen and any one of the above bearing substrates. The bearing substrate is attached to the lower portion of the flexible display screen.
Compared with the prior art, the bearing substrate and the flexible display module provided by the embodiment of the invention can ensure certain flatness performance of the flexible display module after bending, meet certain bending performance, and avoid touch discomfort such as deformation and sinking of the flexible display screen during touch control.
In order to make the aforementioned and other objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below:
drawings
Fig. 1A is a schematic cross-sectional view of a carrier substrate for carrying a flexible display panel according to an embodiment of the present invention.
Fig. 1B is a schematic view of a carrier substrate according to an embodiment of the invention.
FIG. 1C is a schematic view of an edge portion of a carrier substrate undergoing a bending action according to an embodiment of the invention.
Fig. 1D is an exploded view of a carrier substrate according to another embodiment of the invention.
Fig. 1E is a schematic view of bonding a carrier substrate according to another embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a flexible display module according to an embodiment of the invention.
Detailed Description
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. Furthermore, directional phrases used herein, such as, for example, upper, lower, top, bottom, front, rear, left, right, inner, outer, lateral, peripheral, central, horizontal, lateral, vertical, longitudinal, axial, radial, uppermost or lowermost, etc., refer only to the orientation of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.
Referring to fig. 1A to 1C, a carrier substrate 10 according to an embodiment of the invention is suitable for carrying a flexible display 21, and the carrier substrate 10 includes two non-bending regions 11 and a bending region 12. In one embodiment, the two non-bending regions 11 and the bendable region 12 are rectangular, wherein the non-bending regions 11 are disposed at the upper and lower portions of the carrier substrate 10, and the bendable region 12 is disposed at the middle of the carrier substrate 10. In other words, the bendable region 12 is disposed between the two non-bendable regions 11. In an embodiment, the material of the two non-bending regions 11 includes any one of a metal material (e.g., stainless steel) or an amorphous material, for example. In another embodiment, a material of the bendable region 12 includes an elastic rubber (e.g., thermoplastic polyurethane elastomer (TPU) or thermoplastic polyester elastomer (TPEE)).
The bendable region 12 includes a front surface 12A adjacent to the flexible display 21 and a back surface 12B away from the flexible display 21, wherein the front surface 12A has a flat surface, and the back surface 12B has a plurality of patterns 13. In an embodiment, the bendable region 12 of the carrier substrate 10 according to an embodiment of the invention includes a plurality of first portions 121 and a plurality of second portions 122, and the plurality of first portions 121 include a plurality of protrusion patterns 121A (a part of the plurality of patterns 13) arranged along the first direction X. The plurality of second portions 122 are adjacent to the plurality of first portions 121 and include a plurality of recess patterns 122A (another portion of the plurality of patterns 13) disposed along a second direction Y, wherein the first direction X is perpendicular to the second direction Y. In one embodiment, each of the plurality of protrusion patterns 121A has a cross-sectional shape, which includes any one of a circle, an ellipse, a polygon, a wave, and a straight line. In another embodiment, each of the plurality of concave patterns 122A has a cross-sectional shape including any one of a circle, an ellipse, a polygon, a wave, and a straight line. The plurality of convex patterns 121A and the plurality of concave patterns 122A are functional in that when the bendable region 12 of the carrier substrate 10 is bent, the plurality of convex patterns 121A and the plurality of concave patterns 122A can provide an effect for preventing the flexible display unit from deforming and sinking according to a bending direction, affecting a smooth touch feeling and providing an effect for dispersing a tensile stress.
In an embodiment, the plurality of protrusion patterns 121A and the plurality of recess patterns 122A are disposed on the same surface of the carrier substrate 10 (i.e., the back surface 12B of the bendable region 12), and the two non-bendable regions 11 and the bendable region 12 are integrally formed. In one example, the plurality of convex patterns 121A and the plurality of concave patterns 122A are disposed on the lower surface of the carrier substrate 10, and the upper surface of the carrier substrate 10 is attached below the flexible display 21. In this example, when the flexible display panel 21 performs a bending action, the bendable region 12 of the carrier substrate 10 also performs a bending action. It is noted that the plurality of protrusion patterns 121A may increase the stiffness, strength and bending resistance of the flexible display 21 during the bending action. On the other hand, during the bending operation, the plurality of concave patterns 122A are opened, thereby dispersing the tensile stress of the bending operation.
In an embodiment, the plurality of first portions 121 and the plurality of second portions 122 are arranged in a staggered manner, wherein each of the plurality of first portions 121 abuts at least one of the plurality of second portions 122, and the plurality of first portions 121 do not abut each other. In another embodiment, any one of the plurality of first portions 121 and the plurality of second portions 122 is rectangular in shape. In an example, the first portions 121 and the second portions 122 are arranged in a checkerboard manner, so that the carrier substrate 10 has the effect of increasing the stiffness, strength and bending resistance of the flexible display 21 and the effect of dispersing the tensile stress of the bending action.
In an embodiment, the bendable region 12 further defines at least one rectangular region group 123, the rectangular region group 123 is composed of two first portions 121 and two second portions 122, wherein the rectangular region group 123 has a diagonal length L, and the diagonal length L is greater than 0 and less than or equal to 1 cm. Specifically, the diagonal length L may be adjusted according to a touch area or length of a user (e.g., a finger area or length of the user). For example, the length of the front section of the finger (i.e. where there is a fingerprint) of a typical user is approximately 3 cm, the length L of the diagonal line can be approximately less than 1/3, so as to ensure that the touch area of the finger is supported by the plurality of raised patterns 121A, thereby avoiding the problem of the flexible display screen deforming and sinking to affect the smooth touch feeling.
It should be noted that the carrier substrate 10 according to the embodiment of the present invention can carry and protect the flexible display 21, and the flexible display is rapidly flattened by the microstructures (including a plurality of convex patterns and a plurality of concave patterns) located in the bendable region, so as to reduce waviness (waviness), and make the flexible display have high stiffness, and the problem of the touch discomfort such as deformation and sagging of the flexible display during touch does not occur.
In another embodiment, referring to fig. 1A, 1D and 1E, the bendable region 12 includes: a corrugated layer 124 and a glue layer 125. An upper surface 124A and a lower surface 124B of the corrugated layer 124 each have the plurality of patterns 13, wherein the lower surface 124B of the corrugated layer 124 forms the back surface 12B of the bendable region 12. The glue layer 125 is disposed on an upper surface 124A of the corrugated layer 124 to cover the patterns 13 on the upper surface 124A of the corrugated layer 124, wherein the glue layer 125 forms the front surface 12A of the bendable region 12. In other words, the plurality of patterns 13 on the upper surface 124A of the corrugated layer 124 are covered by the glue layer 125, so that the front surface 12A of the bendable region 12 forms a flat surface.
In one embodiment, the two non-folded regions 11 and the corrugated layer 124 together form an integrally formed sheet. In one example, the sheet is a metal sheet, for example.
In one embodiment, the plurality of patterns 13 are arranged along the same direction. In one example, each of the plurality of patterns 13 has a cross-sectional shape including any one of a circle, an ellipse, a polygon, a wave, and a straight line.
In one embodiment, the cross-sectional shape of the adhesive layer 125 is complementary to the patterns 13, so that the front surface 12A of the bendable region 12 forms a flat surface.
It should be noted that the carrier substrate 10 according to the embodiment of the present invention can carry and protect the flexible display 21, and the flexible display can rapidly return to flat, reduce waviness (waviness), and have high stiffness by the microstructure located in the bendable region (including the plurality of patterns 13 located on the back surface 12B of the bendable region 12), and the problem of the flexible display that the flexible display deforms and sags during touch does not occur. In addition, since the patterns 13 on the front surface 12A of the bendable region 12 are covered by the adhesive layer 125, the front surface 12A of the bendable region 12 forms a flat surface, which does not affect the smoothness of touch when the flexible display screen is used.
Referring to fig. 2, fig. 2 is a schematic cross-sectional view of a flexible display module according to an embodiment of the invention. Another embodiment of the present invention provides a flexible display module 20, which includes a flexible display screen 21 and the carrier substrate 10 according to any embodiment of the present invention, wherein the carrier substrate 10 is attached below the flexible display screen 21.
In one embodiment, the flexible display module 20 further includes: a touch sensing unit 22 adhered to the flexible display screen 21, and a cover plate 23 adhered to the touch sensing unit 22. Wherein: the flexible display screen 21 and the touch sensing unit 22 can be bonded by using a transparent optical adhesive 24, and the touch sensing unit 22 and the cover plate 23 can be bonded by using a transparent optical adhesive 25. The bonding of the carrier substrate 10 to the flexible display screen 21 may use a double-sided adhesive tape 26. In addition, the flexible display module 20 may also be of other conventional configurations including the flexible display screen 21, and only one side of the flexible display screen 21 of the flexible display module 20 needs to be bonded with the carrier substrate 10 in this embodiment.
It should be noted that the carrier substrate 10 of the flexible display module 20 according to the embodiment of the invention can carry and protect the flexible display screen 21, and the flexible display screen can be rapidly restored to be flat, the waviness (waviness) is reduced, and the flexible display screen has high stiffness, and the problem of the uncomfortable touch feeling, such as the deformation and sinking of the flexible display screen, does not occur during the touch process through the microstructures (including the plurality of convex patterns and the plurality of concave patterns) located in the bendable region.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. Rather, modifications and equivalent arrangements included within the spirit and scope of the claims are included within the scope of the invention.
Claims (6)
1. A bearing substrate for bearing a flexible display screen is characterized in that: the carrier substrate includes: two non-bent regions; and
a bendable region disposed between the two non-bendable regions, the bendable region including a front surface adjacent to the flexible display screen and a back surface away from the flexible display screen, wherein the front surface has a flat surface, and the back surface has a plurality of patterns, wherein the back surface of the bendable region includes:
a plurality of first portions including a plurality of protrusion patterns arranged in a first direction; and
a plurality of second portions adjacent to the plurality of first portions and including a plurality of recess patterns disposed along a second direction, wherein the first direction is perpendicular to the second direction, wherein:
the plurality of first portions and the plurality of second portions are arranged in a staggered manner, wherein each of the plurality of first portions abuts at least one of the plurality of second portions, and the plurality of first portions do not abut each other;
any one of the plurality of first portions and the plurality of second portions is rectangular in shape;
the first and second portions are arranged in a checkerboard pattern; and
the bendable region is also defined with at least one rectangular region group, the rectangular region group is composed of two first parts and two second parts, and the rectangular region group has a diagonal length which is greater than 0 and less than or equal to 1 cm.
2. The carrier substrate of claim 1, wherein: the plurality of convex patterns are respectively provided with a cross section shape, and the cross section shape comprises any one of a circle, an ellipse, a polygon, a wave shape and a straight line shape; the plurality of concave patterns each have a cross-sectional shape including any one of a circle, an ellipse, a polygon, a wave, and a straight line.
3. The carrier substrate of claim 1, wherein: the material of the bendable region comprises elastic glue.
4. The carrier substrate of claim 1, wherein: the bendable region includes:
a corrugated layer, wherein an upper surface and a lower surface of the corrugated layer are respectively provided with a plurality of patterns, and the lower surface of the corrugated layer forms the back surface of the bendable region; and
and the adhesive layer is arranged on one upper surface of the corrugated layer to cover a plurality of patterns on the upper surface of the corrugated layer, wherein the adhesive layer forms the front surface of the bendable region.
5. The carrier substrate of claim 4, wherein: the plurality of patterns each have a cross-sectional shape including any one of a circle, an ellipse, a polygon, a wave, and a straight line.
6. The utility model provides a flexible display module assembly which characterized in that includes:
a flexible display screen; and
the carrier substrate of any one of claims 1 to 5, affixed below the flexible display screen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910231613.9A CN110058647B (en) | 2019-03-26 | 2019-03-26 | Bearing substrate and flexible display module |
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| CN201910231613.9A CN110058647B (en) | 2019-03-26 | 2019-03-26 | Bearing substrate and flexible display module |
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| CN110058647B true CN110058647B (en) | 2021-12-28 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110649087B (en) * | 2019-10-31 | 2022-06-10 | 京东方科技集团股份有限公司 | Back film and flexible display panel |
| CN111445796B (en) * | 2020-04-02 | 2022-11-01 | 武汉华星光电半导体显示技术有限公司 | Display panel and flexible display device |
| CN115083276B (en) * | 2022-06-22 | 2023-11-07 | 合肥维信诺科技有限公司 | Cover plate, display panel and display device |
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