The present application claims priority from Chinese patent application NO. 201910951735.5 filed to China National Intellectual Property Administration (CNIPA) on Sep. 30, 2019, the disclosure of which is incorporated herein by reference.
The present disclosure generally relates to the technical fields of adhesive tapes and display, and particularly relates to a double-sided tape and a display device.
With continuous development of the display industry, the bezel-less display technology has become a mainstream direction for the development of the display field. Typically, a display screen includes a display area and a surrounding opaque non-display area, the opaque area being located around an outside of the display area. Display panels of conventional bezel-less displays are adhered and fixed onto the bezel via a black double-sided tape below the non-display area. This tape has a strip sheet shape, and a rectangular cross section. During adhesion, this tape will produce stress under the influence of factors such as self-deformation of the tape, fluctuations in the fitting precision, flatness of the module bezel at a support position, deformation of the module bezel, or the like, leading to accumulated stress in the non-display area at edges of the screen. When the stress becomes too large and cannot be released effectively, it will be transferred to the display area, causing a light leakage defect at edges of the display area in a dark state and thus affecting display quality of the product.
The present application provides a double-sided tape and a display device that can realize absorption of the stress and avoid the problem of the light leakage defect at edges of the display area in a dark state.
In a first aspect, there is provided a double-sided tape, wherein the double-sided tape includes a first adhesive surface and a second adhesive surface disposed oppositely in a thickness direction; and at least one of the first adhesive surface and the second adhesive surface of the double-sided tape is provided with a plurality of recesses.
Optionally, each of the plurality of recesses has an opening in a thickness direction and a width direction of the double-sided tape, wherein the opening of each recess, in the width direction of the double-sided tape, is open to at least one side of the width direction, and the double-sided tape extends in a length direction.
Optionally, each of the recesses has an orthographic projection of a triangle shape in the thickness direction, one side of the triangle is the opening of each recess in the width direction of the double-sided tape, and the plurality of recesses are arranged in a spaced and staggered manner in the length direction of the double-sided tape.
Optionally, each of the recesses has an orthographic projection of a rectangle shape in the thickness direction, one side of the rectangle is the opening of each recess in the width direction of the double-sided tape, and the plurality of recesses are arranged in a spaced and staggered manner in the length direction of the double-sided tape.
Optionally, each of the recesses has an orthographic projection of a rectangle shape in the thickness direction, each recess penetrates the double-sided tape in the width direction thereof, and the plurality of recesses are arranged at intervals in the length direction of the double-sided tape.
Optionally, a plurality of first recesses on the first adhesive surface and a plurality of second recesses on the second adhesive surface are symmetrically arranged in the thickness direction of the double-sided tape.
Optionally, at least part of the plurality of first recesses are in communication with the corresponding second recesses.
Optionally, an elastic layer is disposed between the first adhesive surface and the second adhesive surface, in which bottoms of the plurality of recesses are located.
In a second aspect, there is provided a display device, including a liquid crystal panel and a backplane, wherein the display device further includes a bezel on the backplane, and the liquid crystal panel is adhered to the bezel via the double-sided tape according to the embodiments of the present application.
Optionally, the double-sided tape is a light-shielding tape.
Optionally, an elastic layer made of foam is arranged between the first adhesive surface and the second adhesive surface of the double-sided tape.
According to the technical solution provided in the embodiments of the present application, by means of the recesses arranged on the first adhesive surface and/or the second adhesive surface of the double-sided tape, the problem of accumulated stress in conventional double-sided tapes can be solved.
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:
The present application will now be further described in detail below in conjunction with the drawings and exemplary embodiments. It will be appreciated that the specific embodiments described here are used only for the purpose of explaining the related disclosure instead of limiting the disclosure. It should be also noted that, for the convenience of description, only parts related to the disclosure are shown in the drawings.
Unless otherwise defined, technical or scientific terms used in the present disclosure are intended to have general meanings as understood by those of ordinary skill in the art. The words “first”, “second” and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used merely for distinguishing different components. The word “comprising” or “comprises” or the like means that the element or item preceding the word includes elements or items that appear after the word or equivalents thereof, but does not exclude other elements or items. The terms “connected” or “coupled” and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The words “upper”, “lower”, “left”, “right”, or the like are merely used to indicate a relative positional relationship, and when an absolute position of the described object is changed, the relative positional relationship may also be changed accordingly.
It should be noted that the embodiments of the present application and features therein may be combined with each other in any manner as long as they are not contradictory. The present application will be described in detail below with reference to the drawings in conjunction with the embodiments.
Referring to
at least one of the first adhesive surface and the second adhesive surface of the double-sided tape is provided with a plurality of recesses 10.
The double-sided tape has a cuboid shape, and the adhesive surface is a surface of the double-sided tape in direct contact with an adhered object. Conventional double-sided tapes tend to produce stress that is continuously accumulated under the influence of factors such as self-deformation of the tape, fluctuations in the fitting precision, or the like. In the present application, however, the recesses 10 are arranged on at least one of the first adhesive surface and the second adhesive surface of the double-sided tape so that the stress is released into the recesses and thus the deformation risk of the adhered object is reduced.
In practical applications, the recesses may be arranged on the adhesive surface in a different manner, and the embodiments of the present application are schematically illustrated by taking the following six implementation manners as examples.
It should be noted that, for convenience of description, the drawings are provided with an X direction (X axis), a Y direction (Y axis), and a Z direction (Z axis), where the X direction is a length direction of the double-sided tape, the Y direction is a width direction of the double-sided tape, the Z direction is a thickness direction of the double-sided tape, and the three directions are pairwise orthogonal to each other.
Specifically, each recess 10 includes an opening along the Z axis and the Y axis, wherein the opening of each recess 10, along the Y axis, may be oriented in a positive direction of the Y axis, or in a negative direction of the Y axis, or both. Also, each of the recesses 10 may have an orthographic projection of a different shape in the thickness direction (along the Z axis). The orthographic projection here refers to an orthographic projection in the XY plane. The following description is made with reference to specific examples.
In a first practical embodiment as shown in
In this embodiment, the recesses are provided on only one of the first adhesive surface and the second adhesive surface of the double-sided tape, as shown in
A second practical embodiment is shown in
In a third practical embodiment as shown in ” shaped units 23 and “
” shaped units 24 that are arranged alternatively and connected end to end, and the pattern extends in the length direction. When the double-sided tape is used for adhering and fixing a display panel in a display device, the stress generated during adhesion and use can be released at the recesses 10 so that the light leakage defect at edges of the display area caused by accumulated stress is reduced, and normal display is achieved at the display edges.
Orthographic projections of the recesses 10 are complementary to orthographic projections of the “” shaped units 23 or the “
” shaped units 24 on the first adhesive surface, i.e. a sum of the orthographic projection areas of all the recesses, the “
” shaped units 23 and the “
” shaped units 24 coincides with (is equal to) the orthographic projection of the double-sided tape. It will be appreciated that a length S1 of each “
” shaped unit along the X-direction or a length S2 of each “
” shaped unit along the X-direction may be the same or different, and are not limited herein.
In this embodiment, the recesses are provided on only one of the adhesive surfaces of the double-sided tape, as shown in ” shaped unit or “
” shaped unit along the X direction, and the thickness T of the double-sided tape are not limited herein, and are specifically set according to the application scenario and a size of the double-sided tape. The width W is a distance W between adjacent surfaces of each “
” shaped unit or “
” shaped unit that are perpendicular to the XY plane and parallel to each other. These parameters should satisfy the following relations: width W<length S, and thickness T of the double-sided tape≥thickness D.
A fourth practical embodiment is shown in ” shaped units and the “
” shaped units are connected end to end and extend in the length direction, is formed on the other surface of the double-sided tape. In this embodiment the recesses include first recesses 11 arranged on the first adhesive surface and second recesses 12 arranged on the second adhesive surface, and the first recesses 11 and the second recesses 12 are symmetrically arranged up and down. Correspondingly, the “
” shaped units include first “
” shaped units 25 provided on the first adhesive surface and second “
” shaped units (not shown) provided on the second adhesive surface, and the first “
” shaped units 25 and the second “
” shaped units are symmetrically arranged up and down. The length S1, width W and thickness D1 in the X direction of each first “
” shaped unit 25 on the first adhesive surface, and the thickness T of the double-sided tape are not limited herein, and are specifically set according to the application scenario and a size of the double-sided tape. The length S1, width W and thickness D2 in the X direction of each second “
” shaped unit, and the thickness T of the double-sided tape are not limited herein, and are specifically set according to the application scenario and a size of the double-sided tape. These parameters should satisfy the following relations: width W<length S1, and thickness T of the double-sided tape (thickness D1 +thickness D2). Likewise, the “
” shaped units include first “
” shaped units 26 provided on the first adhesive surface and second “
” shaped units provided on the second adhesive surface, and the first “
” shaped units 26 and the second “
” shaped units are symmetrically arranged up and down. The length S2, width W and thickness D1 in the X direction of each first “
” shaped unit 26 provided on the first adhesive surface, and the thickness T of the double-sided tape are not limited herein, and are specifically set according to the application scenario and a size of the double-sided tape. The length S2, width W and thickness D2 in the X direction of each second “
” shaped unit provided on the second adhesive surface, and the thickness T of the double-sided tape are not limited herein, and are specifically set according to the application scenario and a size of the double-sided tape. These parameters should satisfy the following relations: width W<length S2, and thickness T of the double-sided tape≥(thickness D1 +thickness D2). When the double-sided tape is used for adhering and fixing a display panel in a display device, the stress generated during adhesion and use can be released at the recesses 11 and 12 on the two sides so that it is possible to better reduce deformation of the display panel caused by the accumulated stress at the adhesion position, thereby avoiding the problem of light leakage at edges in the dark state of the display screen.
A fifth practical embodiment is shown in
In this embodiment, the recesses are provided on one adhesive surface of the double-sided tape, as shown in
A sixth practical embodiment is shown in
the above each embodiment, an elastic layer is arranged between the first adhesive surface and the second adhesive surface of the double-sided tape, in which bottoms of the recesses are located. The elastic layer may be made of foam.
Optionally, at least part of the plurality of first recesses are in communication with the corresponding second recesses, i.e., part of the first recesses and the second recesses form a through channel in the thickness direction. Thereby, manufacture of the recesses is facilitated and mass of the double-sided tape is reduced.
As shown in
Optionally, the double-sided tape applied to the display device is a light-shielding tape, and specifically, the foam of the double-sided tape may be black foam.
The above description illustrates only preferred embodiments of the present application and technical principles applied therein. It will be appreciated by those skilled in the art that the disclosure scope of the present application is not limited to the technical solutions formed by specific combinations of the above technical features, but shall cover any other technical solution formed by any combination of the above technical features or equivalent features thereof without departing from the above inventive concepts. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Number | Date | Country | Kind |
---|---|---|---|
201910951735.5 | Sep 2019 | CN | national |