CN112927623A

CN112927623A - Display device

Info

Publication number: CN112927623A
Application number: CN202110189902.4A
Authority: CN
Inventors: 曾庆海; 马郁平
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2021-02-18
Filing date: 2021-02-18
Publication date: 2021-06-08
Anticipated expiration: 2041-02-18
Also published as: CN115472091A; CN112927623B

Abstract

The invention discloses a display device, and relates to the technical field of display; the display device is provided with a display area and a non-display area, and comprises cover plate glass and a display panel which are oppositely arranged; the cover glass is positioned on the light emergent side of the display panel, and a light shielding layer is arranged on one side, close to the display panel, of the cover glass in the non-display area; the cover plate glass also comprises an anti-diffusion layer arranged in the non-display area, and the anti-diffusion layer is positioned on one side, close to the display panel, of the light shielding layer; in the non-display area, the filling piece is arranged between the anti-diffusion layer and the display panel and is in direct contact with the anti-diffusion layer; the anti-diffusion layer at least comprises a U-shaped pattern, and the opening of the U-shaped pattern faces the display area; the filling piece and the anti-diffusion layer are arranged in the orthographic projection of the light-emitting surface of the display device, and the filling piece does not exceed the U-shaped edge of the U-shaped pattern. The diffusion-preventing layer prevents substances from seeping out of the contact surface between the filling piece and the light shielding layer through physical blocking, reduces the risk of peeling of cover plate glass in the display device, and improves the reliability of the display device.

Description

Display device

Technical Field

The invention relates to the technical field of display, in particular to a display device.

Background

Along with the development of display technology, display devices are more and more widely used in life of people, a certain suspended area is formed between a display panel and cover glass in a step area of the current display device, and in order to improve the reliability of the step area and solve the problem that the display device is easy to break under the action of external force, a filling part is usually additionally arranged in the suspended area; however, in the prior art, a light shielding layer is usually disposed on a side of the cover glass close to the display panel in the suspended space, and in order to avoid a decrease in the overall adhesion of the display device caused by an exudate appearing on a contact surface between the filling member and the light shielding layer, it is highly desirable to invent a novel film structure of the display device to improve the reliability of the display device.

Disclosure of Invention

In view of the above, the present invention provides a display device to improve the problem of poor reliability of the display device.

The application provides a display device, which is provided with a display area and a non-display area surrounding the display area, wherein the display device comprises cover plate glass and a display panel which are oppositely arranged; the cover plate glass is positioned on the light emergent side of the display panel, and a light shielding layer is arranged on one side, close to the display panel, of the cover plate glass in the non-display area;

the cover plate further comprises an anti-diffusion layer arranged in the non-display area, and the anti-diffusion layer is positioned on one side, close to the display panel, of the light shielding layer;

in the non-display area, the display device further comprises a filling member arranged between the anti-diffusion layer and the display panel, and the filling member is in direct contact with the anti-diffusion layer;

the diffusion-proof layer at least comprises a U-shaped pattern, and the opening of the U-shaped pattern faces the display area; in the orthographic projection of the filling piece and the anti-diffusion layer on the light-emitting surface of the display device, the filling piece does not exceed the U-shaped edge of the U-shaped pattern.

Compared with the prior art, the display device provided by the invention at least realizes the following beneficial effects:

the application provides a display device, be provided with the filler between the cover plate glass in display device non-display area and the display panel, and cover plate glass is close to one side of filler and is provided with the light shield layer, this application is through addding the anti-diffusion layer between light shield layer and filler, provide an anti-diffusion layer including U type pattern at least, the orthographic projection of filler does not surpass the U-shaped edge of U type pattern, be used for reducing the area of contact between filler and the light shield layer through the anti-diffusion layer of U type pattern, and avoid the exudate that filler and light shield layer contact surface appear simultaneously to the U-shaped edge outside diffusion of U type pattern, be favorable to avoiding the problem that display device non-display area adhesion reduces, improve display device's overall reliability.

Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a top view of a display device provided in an embodiment of the present application;

FIG. 2 is an AA' cross-sectional view of FIG. 1 provided in accordance with an embodiment of the present application;

FIG. 3 is a perspective top view of the area B of FIG. 1 according to an embodiment of the present disclosure;

FIG. 4 is a perspective top view of area B of FIG. 1 according to an embodiment of the present disclosure;

FIG. 5 is a top perspective view of the area B of FIG. 1 according to an embodiment of the present disclosure;

FIG. 6 is a top perspective view of the area B of FIG. 1 according to an embodiment of the present disclosure;

FIG. 7 is a top perspective view of area B of FIG. 1 according to an embodiment of the present disclosure;

FIG. 8 is a top perspective view of area B of FIG. 1 according to an embodiment of the present disclosure;

FIG. 9 is a top perspective view of area B of FIG. 1 according to an embodiment of the present disclosure;

FIG. 10 is a top perspective view of area B of FIG. 1 according to an embodiment of the present disclosure;

fig. 11 is a perspective top view of the area B in fig. 1 according to an embodiment of the present disclosure.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the step area of the lower display device, a certain suspended area is formed between the display panel and the cover glass, and in order to improve the reliability of the step area and solve the problem that the display device is easy to break under the action of external force, a filling part is usually additionally arranged in the suspended area; however, in the prior art, a light shielding layer is usually disposed on a side of the cover glass close to the display panel in the suspended space, and in order to avoid a decrease in the overall adhesion of the display device caused by an exudate appearing on a contact surface between the filling member and the light shielding layer, it is highly desirable to invent a novel film structure of the display device to improve the reliability of the display device.

Fig. 1 is a top view of a display device according to an embodiment of the present invention, fig. 2 is an AA' cross-sectional view of fig. 1 according to an embodiment of the present invention, fig. 3 is a top view of a region B in fig. 1 according to an embodiment of the present invention, and fig. 1 to 3 show a display device 100 having a display area 10 and a non-display area 20 surrounding the display area 10, the display device 100 including a cover glass 30 and a display panel 40 disposed opposite to each other; the cover glass 30 is positioned on the light-emitting side of the display panel 40, and a light-shielding layer 31 is arranged on one side, close to the display panel 40, of the cover glass 30 in the non-display area 20;

the cover glass 30 further includes an anti-diffusion layer 32 disposed in the non-display region 20, wherein the anti-diffusion layer 32 is disposed on a side of the light-shielding layer 31 close to the display panel 40;

in the non-display region 20, the display device 100 further includes a filling member 43 disposed between the diffusion preventing layer 32 and the display panel 40, the filling member 43 being in direct contact with the diffusion preventing layer 32;

the diffusion preventing layer 32 includes at least a U-shaped pattern, an opening of the U-shaped pattern faces the display region 10; in the orthographic projection of the filling member 43 and the anti-diffusion layer 32 on the light-emitting surface of the display device 100, the filling member 43 does not exceed the U-shaped edge of the U-shaped pattern.

Specifically, referring to fig. 1, the present application provides a display device 100, where the display device 100 includes a display area 10 and a non-display area 20, where an embodiment of the display device 100 provided in the present application is that the non-display area 20 surrounds the display area 10, but the present application is not limited thereto, and the non-display area may also be partially disposed around the display area.

Referring to fig. 2, the display device 100 provided in the present application includes a cover glass 30 and a display panel 40, which are oppositely disposed, wherein the cover glass 30 is located at a light-emitting side of the display panel 40, and an orthogonal projection of the cover glass 30 on a light-emitting surface of the display device 100 covers an orthogonal projection of the display panel 40 on the light-emitting surface of the display device 100. The cover glass 30 includes a transparent region 33 and a non-transparent region 34, wherein the transparent region 33 corresponds to the display region 10, and the non-transparent region 34 corresponds to the non-display region 20, and the light shielding layer 31 is disposed on one side of the cover glass 30 close to the display panel 40 in the non-display region 20, and the light shielding layer 31 is used to prevent the display device 100 from leaking light in the display state.

In the non-display area 20, in order to improve the reliability of the display device 100, a filler 43 is disposed between the display panel 40 and the light-shielding layer 31 to support the position of the non-display area 20 of the cover glass 30; specifically, the display panel 40 includes an array substrate 41 and a color filter substrate 42, and the filling member 43 is specifically located between the array substrate 41 and the light-shielding layer 31. When the filler 43 and the light shielding layer 31 are disposed in direct contact with each other, there is a problem that an exudate may be present on a contact surface between the filler 43 and the light shielding layer 31, and in the process of assembling and splicing the display device 100, the exudate may penetrate toward a side of the filler 43 away from the display area 10, which may easily cause a decrease or even a disappearance of the adhesiveness of the non-display area 20 of the display device 100, so that the non-display area 20 of the display device 100 may be easily peeled off from the cover glass 30. Therefore, the display device 100 proposed by the present application is additionally provided with the anti-diffusion layer 32, the anti-diffusion layer 32 is disposed in the non-display area 20 of the cover glass 30, specifically, the anti-diffusion layer 32 is located on a side of the light-shielding layer 31 close to the display panel 40, that is, the anti-diffusion layer 32 is located between the light-shielding layer 31 and the filler 43, and the anti-diffusion layer 32 is at least partially in contact with the light-shielding layer 31 and the filler 43, so as to avoid the light-shielding layer 31 and the surface of the filler 43 from being in contact with each other by means of physical blocking, thereby reducing generation of the exudates between the light-shielding layer 31 and the contact surface of the filler 43, and simultaneously being capable of blocking the exudates from permeating into the side of the filler 43 away from the display area 10, which is beneficial to reducing the risk of the cover glass 30 peeling.

In addition to fig. 3 in conjunction with fig. 1 and fig. 2, the diffusion preventing layer 32 provided by the present application has a feature that the diffusion preventing layer 32 at least includes a U-shaped pattern, and an opening of the U-shaped pattern faces the display area 10, so as to prevent the exudate on the surface of the filling member 43 or the light shielding layer 31 facing one side of the diffusion preventing layer 32 from further leaking to the side far away from the display area 10 by means of physical blocking, thereby further reducing the risk of peeling between the cover glass 30 and the display panel 40. It should be further noted that, in the present application, in the orthographic projection of the light-emitting surface of the display device 100, the filling member 43 and the anti-diffusion layer 32 are disposed, and the filling member 43 does not exceed the U-shaped edge of the U-shaped pattern, specifically, the filling member 43 does not exceed one side edge, left and right edges of the U-shaped pattern far away from the display area 10.

The anti-diffusion layer 32 is additionally arranged in the non-display area 20 of the display device 100, physical blocking between the light shielding layer 31 and the filling piece 43 is achieved through the anti-diffusion layer 32, meanwhile, seepage of the filling piece 43 or the light shielding layer 31 towards one side surface of the anti-diffusion layer 32 can be prevented from further leaking to one side far away from the display area 10, and therefore the risk of stripping between the cover glass 30 and the display panel 40 is further reduced, the service life of the display device 100 is prolonged, and the quality of the display device 100 is guaranteed.

Fig. 4 is another perspective top view of the area B in fig. 1 provided by the embodiment of the present application, please refer to fig. 4 on the basis of fig. 1-2, it should be noted that the bar patterns 321 and the diffusion-preventing layer 32 in fig. 4 are marked and filled differently, only for the purpose of better illustration, and in fact, the bar patterns 321 are a part of the diffusion-preventing layer 32.

Optionally, the diffusion preventing layer 32 further includes at least one bar pattern 321, and at least one end of the bar pattern 321 contacts the U-shaped edge.

Specifically, the diffusion preventing layer 32 provided by the present application is based on a U-shaped pattern, and an alternative embodiment is provided herein, where the diffusion preventing layer 32 further includes a bar pattern 321, and two ends of the bar pattern 321 are respectively connected to two ends of a U-shaped opening of the U-shaped pattern; that is, a bar pattern 321 is added based on the U-shaped pattern, and the diffusion preventing layer 32 is in a square pattern.

When the anti-diffusion layer 32 is in a square pattern, the filling member 43 and the anti-diffusion layer 32 may be disposed such that the filling member 43 does not exceed the edge of the square pattern in the orthographic projection of the light-emitting surface of the display device 100, specifically, the filling member 43 is located inside the edge of the square pattern. The anti-diffusion layer 32 realizes physical blocking between the light shielding layer 31 and the filling member 43, and prevents exudate on the surface of the filling member 43 or the light shielding layer 31 facing one side of the anti-diffusion layer 32 from further leaking to one side far away from the display area 10, so that the risk of peeling between the cover glass 30 and the display panel 40 is further reduced, the service life of the display device 100 is prolonged, and the quality of the display device 100 is ensured.

Fig. 5-9 are perspective top views of the area B in fig. 1 provided by embodiments of the present application, please refer to fig. 5-9 on the basis of fig. 1-2, it should be noted that the bar-shaped patterns 321 and the diffusion-preventing layer 32 in fig. 5-9 are marked and filled differently, only for the sake of clarity, and in fact, the bar-shaped patterns 321 are a part of the diffusion-preventing layer 32.

In addition, another alternative embodiment is provided in the present application, in which the diffusion preventing layer 32 is based on a U-shaped pattern, and further includes a plurality of bar patterns 321, and the plurality of bar patterns 321 are all arranged in parallel; specifically, as shown in fig. 5, for example, each of the bar patterns 321 is disposed in parallel with a bottom side of the U-shaped pattern far from the display area 10, and a certain distance is included between the bar patterns 321 disposed in parallel. For example, as shown in fig. 6, each of the bar patterns 321 is perpendicular to one bottom side of the U-shaped pattern far from the display area 10, that is, each of the bar patterns 321 is parallel to two side sides of the U-shaped pattern, and a certain distance is included between the bar patterns 321 that are parallel to each other.

It should be added that when the diffusion preventing layer 32 is based on the square-shaped pattern, a plurality of bar patterns 321 may be added on the basis, and each of the bar patterns 321 is disposed in parallel with one bottom side of the U-shaped pattern of the square-shaped pattern that is far from the display area 10 (as shown in fig. 5), or each of the bar patterns 321 is disposed perpendicular to one bottom side of the U-shaped pattern of the square-shaped pattern that is far from the display area 10, as shown in fig. 7.

Referring to fig. 8, it should be further added that, when the diffusion-preventing layer 32 is based on a U-shaped pattern, a plurality of bar patterns 321 may be added on the basis, at least a part of the bar patterns 321 in the plurality of bar patterns 321 is disposed parallel to a bottom side of the U-shaped pattern far from the display area 10, and at least a part of the bar patterns 321 is disposed perpendicular to a bottom side of the U-shaped pattern far from the display area 10, where the diffusion-preventing layer 32 is, for example, in a grid shape.

Referring to fig. 9, when the anti-diffusion layer 32 of the present application is based on a square pattern and further includes a plurality of bar patterns 321, the present application only defines that at least a portion of the bar patterns 321 intersects another portion of the bar patterns 321, and the anti-diffusion layer 32 also exists in a grid shape.

It should be added that when the anti-diffusion layer 32 is based on the U-shaped pattern, the additional patterns are located in the space enclosed by the U-shaped pattern and the connecting lines on the two sides of the U-shaped pattern far from the bottom side; when the diffusion preventing layer 32 is based on a square pattern, another pattern to be added is located inside the square pattern.

The foregoing embodiments are only examples of the partially selectable pattern arrangement of the diffusion preventing layer 32 in the display device 100 provided in the present application, but the present application is not limited thereto, as long as the diffusion preventing layer 32 at least includes a U-shaped pattern, an opening of the U-shaped pattern faces the display region 10, and the diffusion preventing layer 32 can be used for preventing the light shielding layer 31 from contacting with the surface of the filling member 43 and preventing the generation of the exudate between the light shielding layer 31 and the contact surface of the filling member 43 by means of physical blocking, and at the same time, can also prevent the exudate of the filling member 43 or the surface of the light shielding layer 31 facing the diffusion preventing layer 32 from permeating to the side of the filling member 43 away from the display region 10; the anti-diffusion layer 32 is disposed to reduce the risk of peeling off the cover glass 30 in the non-display area 20 in the display device 100, thereby prolonging the service life of the display device 100 and ensuring the quality of the display device 100.

Referring to fig. 1 to 9, optionally, the orthographic projection of the anti-diffusion layer 32 on the light emitting surface of the display device 100 includes at least one hollow portion.

Specifically, for example, when the pattern of the diffusion barrier 32 is a square pattern as shown in fig. 4, the orthographic projection of the diffusion barrier 32 on the light-emitting surface of the display device 100 includes a hollow portion, i.e., an inner hollow portion of the square pattern; as shown in fig. 5 to 9, for example, when the pattern of the diffusion barrier layer 32 includes a plurality of bar patterns 321 arranged in parallel based on the U-shaped pattern/square-shaped pattern, a plurality of intersecting bar patterns 321 based on the U-shaped pattern/square-shaped pattern, and the like, since the bar patterns 321 are additionally arranged with a certain interval therebetween, the orthographic projection of the diffusion barrier layer 32 on the light emitting surface of the display device 100 includes a plurality of hollow portions.

It should be noted that, when the diffusion preventing layer 32 is a U-shaped pattern or a square-shaped pattern as shown in fig. 3 and 4, the area of the diffusion preventing layer 32 is small, and when the diffusion preventing layer 32 is formed by printing, the number of printed lines is small, so that the manufacturing process of the diffusion preventing layer 32 can be simplified while the service life of the display device 100 is prolonged and the quality of the display device 100 is ensured, and the material consumption required for manufacturing the diffusion preventing layer 32 can be reduced. As shown in fig. 5 to 9, when the diffusion preventing layer 32 is based on a U-shaped pattern/square-shaped pattern and further includes a plurality of bar patterns 321, the diffusion preventing layer 32 is more excellent in printing effect.

Fig. 10 is another perspective top view of the area B in fig. 1 provided in the embodiment of the present application, please refer to fig. 10 on the basis of fig. 1 and fig. 2, and optionally, an orthographic projection of the anti-diffusion layer 32 on the light-emitting surface of the display device 100 is in a whole surface shape.

Specifically, another alternative embodiment is provided herein, in which the anti-diffusion layer 32 is based on a U-shaped pattern, and is filled and coated in a full-surface shape on the basis of a connecting line between two sides of the U-shaped pattern away from the bottom side, and at this time, the orthographic projection of the anti-diffusion layer 32 on the light-emitting surface of the display device 100 is in a full-surface shape; the diffusion barrier layer 32 having a full surface shape is more easily coated than the diffusion barrier layer 32 having a hollow portion, is advantageous for the production yield of the diffusion barrier layer 32, and can completely separate the light-shielding layer 31 and the filler 43.

Fig. 11 is another perspective top view of the area B in fig. 1 provided in the present embodiment, please refer to fig. 11 on the basis of fig. 1 and fig. 2, optionally, an orthogonal projection of the diffusion preventing layer 32 on the light emitting surface of the display device 100 includes at least one hollow portion, and an edge of the diffusion preventing layer 32 includes a U-shaped edge.

Specifically, the present application further provides another alternative embodiment, in which the diffusion-preventing layer 32 is based on a U-shaped pattern, and is based on a connecting line between two sides of the U-shaped pattern and a side of the bottom edge, and includes a plurality of hollow portions in an area surrounded by the U-shaped pattern and the connecting line, and the other portions except the positions of the hollow portions are made of the material of the diffusion-preventing layer 32; that is, at this time, the orthographic projection of the anti-diffusion layer 32 on the light-emitting surface of the display device 100 includes a plurality of hollow portions. The shape of the hollow portion is not specifically limited in the present application, for example, the orthographic projection of the hollow portion on the light-emitting surface of the display device 100 may be a circle, various polygons, and the like; the present application also does not limit that the patterns of the hollowed-out portions in one anti-diffusion layer 32 are the same, and the areas are the same, as long as the orthographic projection of the anti-diffusion layer 32 on the light-emitting surface of the display device 100 includes at least one hollowed-out portion.

Referring to FIG. 3, optionally, the width of each side of the U-shaped pattern is D, and D is greater than or equal to 0.12 mm.

Specifically, for example, when the diffusion preventing layer 32 only includes a U-shaped pattern, the diffusion preventing layer 32 may be formed by three sides, and an alternative embodiment is provided in the present application, in which the width of any one side of the three sides of the U-shaped pattern is D, and the width of each side of the pattern of the diffusion preventing layer 32 may be set to be equal to or greater than 0.12mm, so that the manufacturing area of the diffusion preventing layer 32 may be ensured to be small, and when the diffusion preventing layer 32 is formed by printing, the number of printed lines is small, and the printed lines are thin, so that the service life of the display device 100 is prolonged, the quality of the display device 100 is ensured, and the material consumption required for manufacturing the diffusion preventing layer 32 can be reduced; meanwhile, the diffusion-preventing layer 32 has an excessively large area, and when contacting the filler 43, excessive bubbles are likely to occur between the contact surfaces, thereby reducing the bonding effect; and the manufacturing area of the diffusion-preventing layer 32 is small, so that the situation that the material overflows when the material needed for manufacturing the diffusion-preventing layer 32 is too much can be avoided.

It is to be added that the present application provides the diffusion preventing layer 32 with various patterns, such as a U-shaped pattern, a square-shaped pattern, a grid-shaped pattern, a stripe-shaped pattern, a full-face-shaped pattern, and the like. Taking the anti-diffusion layer 32 as the whole-surface pattern as an example, the printing area occupied by the anti-diffusion layer 32 for manufacturing the whole-surface pattern is set to be 100%; compared with the anti-diffusion layer 32 of the whole-surface pattern, the printing area occupied by the anti-diffusion layer 32 of the U-shaped pattern is 15.7%, the printing area occupied by the anti-diffusion layer 32 of the square pattern is 30.7%, the printing area occupied by the anti-diffusion layer 32 of the horizontal bar-shaped pattern in the bar-shaped pattern is 60.8%, the printing area occupied by the anti-diffusion layer 32 of the vertical bar-shaped pattern is 62.7%, and the printing area occupied by the anti-diffusion layer 32 of the grid-shaped pattern is 80.8%; it can be seen that when the anti-diffusion layer 32 is manufactured, the printing areas required by the different patterns are ordered from small to large as follows: u-shaped pattern < square pattern < horizontal bar pattern < vertical bar pattern < grid pattern < whole face pattern.

The application has tested the diffusion interception effect of at least part of patterns on the substances seeped out of the filling piece 43, and compared with the test, the diffusion prevention layer 32 has the best diffusion interception effect on the substances seeped out of the filling piece 43. The diffusion interception effect of the diffusion-preventing layer 32 on the substances seeped out from the filling member 43 is sequentially from the top rank to the next rank: a diffusion barrier layer of a square-shaped pattern (as shown in fig. 4), a diffusion barrier layer of a U-shaped pattern (as shown in fig. 3), a diffusion barrier layer of a horizontal stripe pattern (as shown in fig. 5), a diffusion barrier layer of a grid-shaped pattern (as shown in fig. 8 and 9), a diffusion barrier layer of a vertical stripe pattern (as shown in fig. 7), and a diffusion barrier layer of a full-face pattern (as shown in fig. 10). Note that, the diffusion preventing layer of the square-shaped pattern and the diffusion preventing layer of the U-shaped pattern have almost the same effect of blocking the exudate on the surface of the packing 43, and the diffusion preventing layer of the horizontal stripe pattern, the diffusion preventing layer of the grid-shaped pattern, and the diffusion preventing layer of the vertical stripe pattern have almost the same effect of blocking the exudate on the surface of the packing 43.

Therefore, when the anti-diffusion layer 32 provided by the application is manufactured into a U-shaped pattern or a square-shaped pattern, the printing area required to be occupied is the smallest, excessive space does not need to be occupied, and the manufactured pattern is relatively simple; therefore, when the U-shaped pattern anti-diffusion layer and the square-shaped pattern anti-diffusion layer are arranged, the used printing materials are the least, the consumption of excessive printing materials can be avoided, the problem of overflowing caused by the excessive printing materials can be avoided, and the influence of the printing anti-diffusion layer on the appearance of the cover plate glass can be favorably avoided. And the U-shaped pattern diffusion preventing layer and the rectangular pattern diffusion preventing layer have relatively optimal diffusion blocking effects on the substances oozed out from the packing 43, the present application provides a preferable mode in which the diffusion preventing layer 32 is formed into a U-shaped pattern or a rectangular pattern when the diffusion preventing layer 32 is additionally provided.

Referring to fig. 1 to 11, optionally, an orthographic projection of the anti-diffusion layer 32 on the light-emitting surface of the display device 100 and an orthographic projection of the filling member 43 on the light-emitting surface of the display device 100 are at least partially overlapped.

Specifically, the diffusion preventing layer 32 provided by the present application has a feature that the diffusion preventing layer 32 includes at least a U-shaped pattern, an opening of the U-shaped pattern faces the display region 10; in the present application, when the filling member 43 and the anti-diffusion layer 32 are disposed in the orthographic projection of the light-emitting surface of the display device 100, the filling member 43 does not exceed one side edge, the left edge and the right edge (as shown in fig. 3) of the U-shaped pattern far from the display area 10, at this time, no matter whether the anti-diffusion layer 32 is a U-shaped pattern, a square pattern, or a plurality of bar patterns 321 on the basis of the U-shaped pattern/square pattern, or whether a space enclosed by the U-shaped pattern and an edge connecting line thereof includes a plurality of hollow portions, etc., the orthographic projection of the anti-diffusion layer 32 on the light-emitting surface of the display device 100 and the orthographic projection of the filling member 43 on the light-emitting surface of the display device 100 may at least partially overlap, or as shown in fig. 10, optionally, the orthographic projection of the anti-diffusion layer 32 on the light-. In short, as long as the filling member 43 and the anti-diffusion layer 32 do not exceed the U-shaped edge of the U-shaped pattern in the orthographic projection of the light-emitting surface of the display device 100, specifically, the filling member 43 does not exceed one side edge, left and right edges of the U-shaped pattern far away from the display area 10.

With this arrangement, the diffusion preventing layer 32 can be used to prevent the exudates of the filling member 43 or the light shielding layer 31 from further leaking to the side away from the display region 10 by means of physical blocking, thereby further reducing the risk of the cover glass 30 peeling off in the display device 100.

It should be noted that, since the side of the filling member 43 close to the display area 10 in the display device 100 includes an insulating material (not shown in the drawings), which can block the permeation of the exudates on the surface of the filling member 43 to the display area 10, the diffusion preventing layer 32 added in the present application is not required to be able to block the permeation of the exudates on the surface of the filling member 43 to the display area 10; therefore, the diffusion barrier layer 32 added in the present application may include at least the above-described U-shaped pattern.

Referring to fig. 1 and fig. 2, optionally, an orthographic projection of the light shielding layer 31 on the light emitting surface of the display device 100 covers an orthographic projection of the anti-diffusion layer 32 on the light emitting surface of the display device 100.

Specifically, in order to facilitate the manufacturing of the light shielding layer 31, the present application provides a positional relationship between the light shielding layer 31 and the anti-diffusion layer 32, that is, an orthographic projection of the light shielding layer 31 on the light emitting surface of the display device 100 covers an orthographic projection of the anti-diffusion layer 32 on the light emitting surface of the display device 100, that is, the light shielding layer 31 can be disposed to cover the whole non-display area 20 of the display device 100, and the anti-diffusion layer 32, the filling member 43, and the like are disposed inside the orthographic projection of the light shielding layer 31, so as to avoid affecting the effective display area 10 of the display device 100, which is beneficial to ensuring a good.

Optionally, the dyne value M, 29dyne ≦ M ≦ 32dyne for the anti-diffusion layer 32.

It should be noted that the dyne value is used for expressing the force that is drawn by each other in unit length between two adjacent parts of the liquid surface, and is mainly used for expressing the magnitude of the surface tension, and further, the dyne value is mainly used for expressing the surface tension coefficient; the dyne value is usually detected by a dyne pen (surface tension test pen).

Specifically, the application provides that the dyne value of the anti-diffusion layer 32 ranges from 29dyne to 32dyne (inclusive). It is currently difficult to find the dyne value less than 29dyne in the industry, and the dyne value less than 29dyne may be used as the material of the anti-diffusion layer 32, and there is a risk of increasing the manufacturing cost of the display device 100 if the anti-diffusion layer 32 is desired to be found; in addition, the material having a dyne value of less than 29dyne has a problem of low printability, and when the material is printed, defects such as surface bubbles and pits are likely to occur, and the effect of blocking the exudate in the filler 43 by the diffusion preventing layer 32 is deteriorated due to an excessive number of bubbles and pits, and even the bubbles and pits on the surface of the diffusion preventing layer 32 exert drag force on the exudate in the filler 43. The present application can select to set the dyne value of the anti-diffusion layer 32 to be equal to or greater than 29 dyne.

In addition, if the corresponding cause value of the diffusion preventing layer 32 is greater than 32dyne, the intercepting effect of the diffusion preventing layer 32 on the exudate in the filling member 43 may be deteriorated, that is, the intercepting effect of the diffusion preventing layer 32 on the exudate in the filling member 43 may be deteriorated as the cause value of the diffusion preventing layer 32 is increased, so that the present application may selectively set the cause value of the diffusion preventing layer 32 to be equal to or less than 32 dyne.

In summary, in the present application, the dyne value of the anti-diffusion layer 32 is controlled to be between 29dyne and 32dyne (including endpoint value), which is beneficial to improving the printability of the anti-diffusion layer 32, and bubbles are not easy to appear during printing, so that the phenomenon of pits appearing on the surface of the anti-diffusion layer 32 can be avoided, and the effect of the anti-diffusion layer 32 on intercepting the exudates in the filling member 43 can be ensured.

In addition, the diffusion barrier layer 32 provided in the present application may be made of a material that does not have any absorption effect on the exudate in the filler 43, or a material that can inhibit the generation of exudate on the surface of the filler 43; the specific material of the diffusion barrier layer is not limited herein, as long as the diffusion barrier layer 32 can prevent the diffusion of the exudate from the surface of the filler 43.

In summary, the definition conditions of the diffusion preventing layer 32 provided by the present application include: first, the dyne value of the anti-diffusion layer 32 is 29dyne-32dyne (inclusive); second, the diffusion preventing layer 32 has a property of not absorbing the exudate in the packing 43 or a property of suppressing the generation of the exudate on the surface of the packing 43. It should be noted that the diffusion preventing layer 32 provided in the present application only needs to satisfy one of the two above-mentioned limitations, and the present application does not limit that the diffusion preventing layer 32 simultaneously satisfies the two above-mentioned limitations.

Optionally, the anti-diffusion layer 32 is disposed by silk-screen printing or attaching.

Specifically, when the anti-diffusion layer 32 is a coating, the anti-diffusion layer 32 may be disposed on the side of the light shielding layer 31 close to the display panel 40 by adopting a silk-screen printing method, or the anti-diffusion layer 32 may be disposed on the side of the filling member 43 close to the cover glass 30 by adopting a silk-screen printing method; the anti-diffusion layer 32 is manufactured in a silk-screen printing mode, equipment cost required for silk-screen printing of the anti-diffusion layer 32 is low, and manufacturing cost of the anti-diffusion layer 32 is reduced.

In addition, the diffusion preventing layer 32 may be adhered to the light shielding layer 31 on the side close to the display panel 40 or adhered to the filler 43 on the side close to the cover glass 30; the anti-diffusion layer 32 is additionally arranged in the display device 100 in an attached manner, so that the whole manufacturing process of the display device 100 is simplified.

Optionally, the diffusion barrier layer 32 and at least one film layer structure in the display device 100 are manufactured in the same layer by the same process.

Specifically, the anti-diffusion layer 32 can be made of a material having a light shielding effect, so that the light shielding layer 31 is omitted, and the anti-diffusion layer 32 having the light shielding effect can be used for preventing the display device 100 from light leakage, and preventing substances in the filling member 43 from seeping out to the cover glass 30 side, so that the reliability of the cover glass 30 can be guaranteed, and the service life of the display device 100 can be guaranteed.

In addition, the diffusion preventing layer 32 can also be made of a material with a filling effect, that is, the diffusion preventing layer 32 can also have an effect of filling a suspended space between the cover glass 30 and the display panel 40 in the display device 100, so that the filling member 43 is replaced by the diffusion preventing layer 32 with the filling effect, the manufacturing of the filling member 43 is omitted, and the manufacturing process of the display device 100 is facilitated to be simplified.

In addition, on the basis of not adjusting the light shielding layer 31 and the filling member 43, the diffusion preventing layer 32 may be selectively manufactured simultaneously with at least one film layer structure in the display panel 40 by the same process, which can reduce the manufacturing process of the display device 100 and is beneficial to simplifying the manufacturing process of the display device 100. It should be noted that, the specific manufacturing process and manufacturing procedure of the diffusion barrier 32 are not specifically limited in the present application, as long as the diffusion barrier 32 can ensure the reliability of the display device 100 and prevent the cover glass 30 from peeling off.

Alternatively, the filler 43 is made of an elastic material.

Specifically, the filling member 43 is disposed between the display panel 40 and the cover glass 30, and the manufacturing material of the filling member 43 is an elastic material, and when the display device 100 is subjected to an external force, the elastic material has a certain elastic force, so that at least one of the cover glass 30 and the display panel 40 can be prevented from being broken, and the service life of the display device 100 can be prolonged. The elastic material is, for example, a rubber material having elasticity after being set.

In addition, the present application does not excessively limit the fabrication area of the filler 43, and it can be said that the present application does not specifically limit the overlapping area between the filler 43 and the diffusion preventing layer 32, for example, the filler 43 may be a single piece or may be formed by a plurality of subassemblies, as long as it can be used to fill the suspended space existing between the display panel 40 and the cover glass 30, and the diffusion preventing layer 32 can prevent the substance in the filler 43 from seeping out to affect the reliability of the display device 100.

The manufacturing process of the display device including the cover glass and the display panel disposed opposite to each other, which includes the step region, is briefly described herein.

Step 101, providing a cover plate glass, coating a light shielding layer on a non-display area of the cover plate glass, wherein the light shielding layer is positioned on the inner surface of the cover plate glass;

102, printing an anti-diffusion layer on the surface of one side, away from the cover plate glass, of the shading layer corresponding to the step area, wherein the printing area of the anti-diffusion layer is located inside the area of the shading layer;

103, point-coating a filling piece on one side, close to the cover plate glass, of the display panel corresponding to the step area, and waiting for the filling piece to be solidified;

and 104, assembling the display panel and the cover glass, wherein the surface of one side, far away from the cover glass, of the diffusion-preventing layer is at least partially contacted with the surface of one side, close to the cover glass, of the filling piece.

According to the display device 100, the anti-diffusion layer 32 is additionally arranged, the anti-diffusion layer 32 is located between the light shielding layer 31 and the filling member 43, the light shielding layer 31 is prevented from being in contact with the surface of the filling member 43 in a physical blocking mode, the generation of exudates between the contact surface of the light shielding layer 31 and the filling member 43 is reduced, and meanwhile the exudates can be prevented from permeating towards the side, far away from the display area 10, of the filling member 43.

It should be noted that the display device 100 provided in the present application may be: any product and component with a display function, such as a mobile phone, a tablet personal computer, a television, a step wiring area, a notebook computer, a vehicle-mounted display screen, a navigator and the like.

As can be seen from the above embodiments, the display device provided by the present invention at least achieves the following beneficial effects:

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display device is characterized in that a display area and a non-display area surrounding the display area are arranged, and the display device comprises a cover glass and a display panel which are oppositely arranged; the cover plate glass is positioned on the light emergent side of the display panel, and a light shielding layer is arranged on one side, close to the display panel, of the cover plate glass in the non-display area;

the cover plate glass also comprises an anti-diffusion layer arranged in the non-display area, and the anti-diffusion layer is positioned on one side of the light shielding layer close to the display panel;

2. The display device according to claim 1, wherein the diffusion preventing layer further comprises at least one stripe pattern, at least one end of the stripe pattern being in contact with the U-shaped edge.

3. The display device according to claim 2, wherein an orthographic projection of the anti-diffusion layer on the light emitting surface of the display device comprises at least one hollow part.

4. The display device according to claim 2, wherein an orthographic projection of the diffusion preventing layer on the light exit surface of the display device is a whole surface.

5. The display device according to claim 1, wherein an orthographic projection of the anti-diffusion layer on the light emitting surface of the display device comprises at least one hollow portion, and an edge of the anti-diffusion layer comprises a U-shaped edge.

6. The display device according to claim 1, wherein an orthographic projection of the anti-diffusion layer on the light-emitting surface of the display device at least partially overlaps with an orthographic projection of the filling member on the light-emitting surface of the display device.

7. The display device according to claim 1, wherein an orthographic projection of the anti-diffusion layer on the light-emitting surface of the display device covers an orthographic projection of the filling member on the light-emitting surface of the display device.

8. The display device according to claim 1, wherein an orthographic projection of the light shielding layer on the light exit surface of the display device covers an orthographic projection of the anti-diffusion layer on the light exit surface of the display device.

9. The display device as claimed in claim 1, wherein each side of the U-shaped pattern has a width D ≧ 0.12 mm.

10. The display device according to claim 1, wherein the anti-diffusion layer has a dyne value M, 29dyne ≦ M ≦ 32 dyne.

11. The display device according to claim 1, wherein the diffusion-preventing layer is disposed by silk-screen printing or attaching.

12. The display device according to claim 1, wherein the filling member is made of an elastic material.

13. The display device according to claim 1, wherein the diffusion preventing layer and at least one film layer structure in the display device are manufactured in the same layer by the same process.