Display device

Abstract

The present invention discloses a display device, which relates to the field of display technology; the display device is provided with a display area and a non-display area, including a cover glass and a display panel arranged oppositely; the cover glass is located on the light-emitting side of the display panel, and in the non-display area, a shading layer is arranged on the side of the cover glass close to the display panel; the cover glass also includes an anti-diffusion layer arranged in the non-display area, and the anti-diffusion layer is located on the side of the shading layer close to the display panel; in the non-display area, a filler is arranged between the anti-diffusion layer and the display panel, and the filler is in direct contact with the anti-diffusion layer; the anti-diffusion layer at least includes a U-shaped pattern, and the opening of the U-shaped pattern faces the display area; in the orthographic projection of the filler and the anti-diffusion layer on the light-emitting surface of the display device, the filler does not exceed the U-shaped edge of the U-shaped pattern. The anti-diffusion layer prevents the contact surface between the filler and the shading layer from leaking substances through physical blocking, reduces the risk of peeling of the cover glass in the display device, and improves the reliability of the display device.

Description

[0001] This application is a divisional application with application number 202110189902.4, application date: February 18, 2021, and invention name: Display device. Technical Field

[0002] The present invention relates to the field of display technology, and more particularly, to a display device. Background Art

[0003] With the development of display technology, display devices are being used more and more widely in people's lives. In the step area of ​​current display devices, there is a certain suspended area between the display panel and the cover glass. In order to improve the reliability of the step area and solve the problem that the display device is prone to cracking when external force acts, a filling piece is usually added to the suspended area; however, in the prior art, a shading layer is usually provided on the side of the cover glass close to the display panel in the suspended area. In order to avoid the appearance of exudate on the contact surface between the filling piece and the shading layer, which leads to a decrease in the overall adhesion of the display device, it is urgent to invent a new film layer structure of the display device to improve the reliability of the display device. Summary of the invention

[0004] In view of this, the present invention provides a display device to improve the problem of poor reliability of the display device.

[0005] The present application provides a display device, which is provided with a display area and a non-display area surrounding the display area, and the display device comprises a cover glass and a display panel arranged opposite to each other; the cover glass is located on the light emitting side of the display panel, and a light shielding layer is provided on a side of the cover glass close to the display panel in the non-display area;

[0006] The cover plate further comprises an anti-diffusion layer arranged in the non-display area, wherein the anti-diffusion layer is located on a side of the light shielding layer close to the display panel;

[0007] In the non-display area, the display device further comprises a filling member disposed between the anti-diffusion layer and the display panel, the filling member being in direct contact with the anti-diffusion layer;

[0008] The anti-diffusion layer at least includes a U-shaped pattern, the opening of which faces the display area; in the orthographic projection of the filler and the anti-diffusion layer on the light-emitting surface of the display device, the filler does not exceed the U-shaped edge of the U-shaped pattern.

[0009] Compared with the prior art, the display device provided by the present invention achieves at least the following beneficial effects:

[0010] The present application provides a display device, wherein a filler is arranged between a cover glass in a non-display area of ​​the display device and a display panel, and a light-shielding layer is arranged on a side of the cover glass close to the filler. The present application provides an anti-diffusion layer including at least a U-shaped pattern by adding an anti-diffusion layer between the light-shielding layer and the filler, wherein the orthographic projection of the filler does not exceed the U-shaped edge of the U-shaped pattern, so as to reduce the contact area between the filler and the light-shielding layer through the anti-diffusion layer of the U-shaped pattern, and at the same time prevent exudate appearing on the contact surface of the filler and the light-shielding layer from diffusing to the outside of the U-shaped edge of the U-shaped pattern, which is beneficial to avoid the problem of reduced adhesion in the non-display area of ​​the display device and improve the overall reliability of the display device.

[0011] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0012] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0014] Figure 1 Shown is a top view of a display device provided in an embodiment of the present application;

[0015] Figure 2 The embodiment of the present application is shown as follows Figure 1 An AA' cross-sectional view of;

[0016] Figure 3 The embodiment of the present application is shown as follows Figure 1 A perspective top view of area B in the middle;

[0017] Figure 4 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle;

[0018] Figure 5 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle;

[0019] Figure 6 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle;

[0020] Figure 7 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle;

[0021] Figure 8 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle;

[0022] Fig. 9 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle;

[0023] Fig.10 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle;

[0024] Fig.11 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle. DETAILED DESCRIPTION

[0025] 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 components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0026] 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.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0028] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0029] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0030] In the step area of ​​the current display device, there is a certain suspended area between the display panel and the cover glass. In order to improve the reliability of the step area and solve the problem that the display device is prone to cracking when external force is applied, a filling piece is usually added to the suspended area; however, in the prior art, a shading layer is usually provided on the side of the cover glass close to the display panel in the suspended area. In order to avoid the appearance of exudate on the contact surface between the filling piece and the shading layer, which may cause a decrease in the overall adhesion of the display device, it is urgent to invent a new film layer structure of the display device to improve the reliability of the display device.

[0031] In view of this, the present invention provides a display device to improve the problem of poor reliability of the display device.

[0032] Figure 1 FIG. 1 is a top view of a display device provided in an embodiment of the present application. Figure 2 The embodiment of the present application is shown as follows Figure 1 An AA' cross-section diagram of Figure 3 The embodiment of the present application is shown as follows Figure 1 A perspective top view of area B in the middle, please refer to Figure 1-Figure 3 The present application provides a display device 100, which is provided with a display area 10 and a non-display area 20 surrounding the display area 10, and the display device 100 includes a cover glass 30 and a display panel 40 which are arranged opposite to each other; the cover glass 30 is located on the light emitting side of the display panel 40, and a light shielding layer 31 is arranged on the side of the cover glass 30 close to the display panel 40 in the non-display area 20;

[0033] The cover glass 30 further includes an anti-diffusion layer 32 disposed in the non-display area 20 , and the anti-diffusion layer 32 is located on a side of the light shielding layer 31 close to the display panel 40 ;

[0034] In the non-display area 20 , the display device 100 further includes a filler 43 disposed between the anti-diffusion layer 32 and the display panel 40 , and the filler 43 is in direct contact with the anti-diffusion layer 32 ;

[0035] The diffusion prevention layer 32 at least includes a U-shaped pattern, the opening of which faces the display area 10 ; in the orthographic projection of the filler 43 and the diffusion prevention layer 32 on the light emitting surface of the display device 100 , the filler 43 does not exceed the U-shaped edge of the U-shaped pattern.

[0036] For details, please refer to Figure 1 The present application provides a display device 100, which includes a display area 10 and a non-display area 20. In one embodiment of the display device 100 provided by the present application, 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 arranged to surround the display area.

[0037] Please refer to Figure 2The display device 100 provided in the present application includes a cover glass 30 and a display panel 40 which are arranged opposite to each other. The cover glass 30 is located on the light-emitting side of the display panel 40, and the orthographic projection of the cover glass 30 on the light-emitting surface of the display device 100 covers the orthographic projection of the display panel 40 on the light-emitting surface of the display device 100. The cover glass 30 includes a light-transmitting area 33 and a non-light-transmitting area 34, wherein the light-transmitting area 33 corresponds to the display area 10, and the non-light-transmitting area 34 corresponds to the non-display area 20. In the present application, a light-shielding layer 31 is arranged in the non-display area 20 and on the side of the cover glass 30 close to the display panel 40. The light-shielding layer 31 is used to prevent the display device 100 from leaking light when in the display state.

[0038] In the non-display area 20, in order to improve the reliability of the display device 100, a filler 43 is provided between the display panel 40 and the light shielding layer 31 to support the non-display area 20 position of the cover glass 30; specifically, the display panel 40 includes an array substrate 41 and a color film substrate 42, and the filler 43 is specifically located between the array substrate 41 and the light shielding layer 31. Since the filler 43 and the light shielding layer 31 are directly contacted, there will be a problem of exudate on the contact surface between the filler 43 and the light shielding layer 31. During the assembly and splicing process of the display device 100, the exudate will penetrate to the side of the filler 43 away from the display area 10, which is likely to cause the adhesiveness of the non-display area 20 of the display device 100 to be reduced or even disappear, making it easy for the cover glass 30 to peel off in the non-display area 20 of the display device 100. Therefore, an anti-diffusion layer 32 is added to the display device 100 proposed in the present application. The anti-diffusion layer 32 is arranged in the non-display area 20 of the cover glass 30. Specifically, the anti-diffusion layer 32 is located on the side of the shading layer 31 close to the display panel 40, that is, the anti-diffusion layer 32 is located between the shading layer 31 and the filling member 43, and the anti-diffusion layer 32 is at least partially in contact with the shading layer 31 and the filling member 43 respectively, and the surface contact between the shading layer 31 and the filling member 43 is avoided by physical blocking, thereby reducing the generation of exudate between the contact surface of the shading layer 31 and the filling member 43, and at the same time, it can prevent the exudate from penetrating to the side of the filling member 43 away from the display area 10, which is beneficial to reduce the risk of peeling of the cover glass 30 in the non-display area 20, thereby helping to improve the service life of the display device 100.

[0039] exist Figure 1 , Figure 2 Based on the combination Figure 3In addition, the anti-diffusion layer 32 provided in the present application has the following characteristics: the anti-diffusion layer 32 at least includes a U-shaped pattern, the opening of the U-shaped pattern faces the display area 10, and is used to prevent the exudate on the surface of the filler 43 or the light shielding layer 31 facing the anti-diffusion layer 32 from further leaking to the side 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 explained that in the present application, the filler 43 and the anti-diffusion layer 32 are arranged so that in the orthographic projection of the light-emitting surface of the display device 100, the filler 43 does not exceed the U-shaped edge of the U-shaped pattern, specifically, the filler 43 does not exceed the side edge, left and right edges of the U-shaped pattern away from the display area 10.

[0040] The present application adds an anti-diffusion layer 32 to the non-display area 20 of the display device 100, and the anti-diffusion layer 32 realizes a physical barrier between the shading layer 31 and the filling member 43, and at the same time can prevent the exudate on the surface of the filling member 43 or the shading layer 31 facing the anti-diffusion layer 32 from further leaking to the side away from the display area 10, thereby further reducing the risk of peeling between the cover glass 30 and the display panel 40, thereby increasing the service life of the display device 100 and ensuring the quality of the display device 100.

[0041] Figure 4 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle, please Figure 1-Figure 2 Based on the reference Figure 4 , it needs to be explained first that, Figure 4 The stripe pattern 321 and the anti-diffusion layer 32 are marked and filled differently only for a clearer illustration. In fact, the stripe pattern 321 is a part of the anti-diffusion layer 32 .

[0042] Optionally, the diffusion prevention layer 32 further includes at least one stripe pattern 321 , and at least one end of the stripe pattern 321 is in contact with the U-shaped edge.

[0043] Specifically, the diffusion prevention layers 32 provided in the present application are all based on a U-shaped pattern. An optional embodiment is provided herein, in which the diffusion prevention layer 32 also includes a strip pattern 321, and the two ends of the strip pattern 321 are respectively connected to the two ends of the U-shaped opening of the U-shaped pattern; that is, based on the U-shaped pattern, a strip pattern 321 is added, and the diffusion prevention layer 32 is now a "U-shaped" pattern.

[0044] It should be noted that when the anti-diffusion layer 32 is a square-shaped pattern, the present application may set the filler 43 and the anti-diffusion layer 32 in the orthographic projection of the light-emitting surface of the display device 100, and the filler 43 does not exceed the edge of the square-shaped pattern, specifically, the filler 43 is located inside the edge of the square-shaped pattern. The anti-diffusion layer 32 realizes a physical barrier between the light-shielding layer 31 and the filler 43, and prevents the exudate on the surface of the filler 43 or the light-shielding layer 31 facing the anti-diffusion layer 32 from further leaking to the side away from the display area 10, thereby further reducing the risk of peeling between the cover glass 30 and the display panel 40, so as to improve the service life of the display device 100 and ensure the quality of the display device 100.

[0045] Figure 5-Figure 9 The examples shown are all provided in the present application. Figure 1 Another perspective top view of area B in the middle, please Figure 1-Figure 2 Based on the reference Figure 5-Figure 9 , it needs to be explained first that, Figure 5-Figure 9 The stripe pattern 321 and the anti-diffusion layer 32 are marked and filled differently only for a clearer illustration. In fact, the stripe pattern 321 is a part of the anti-diffusion layer 32 .

[0046] In addition, the present application also provides another optional embodiment, in which the diffusion prevention layer 32 is based on the U-shaped pattern and further includes a plurality of stripe patterns 321, and the plurality of stripe patterns 321 are arranged in parallel; specifically, one of them is as follows: Figure 5 As shown, for example, each strip pattern 321 is arranged parallel to a bottom edge of the U-shaped pattern away from the display area 10, and at this time, there is a certain spacing distance between the parallel strip patterns 321. Figure 6 As shown, each strip pattern 321 is arranged perpendicularly to a bottom edge of the U-shaped pattern away from the display area 10, that is, each strip pattern 321 is arranged parallel to two side edges of the U-shaped pattern, and at this time, each parallel strip pattern 321 includes a certain spacing distance.

[0047] It should also be added that when the diffusion prevention layer 32 is based on the U-shaped pattern, a plurality of stripe patterns 321 can be added on the basis of the U-shaped pattern, and the plurality of stripe patterns 321 are arranged parallel to a bottom edge of the U-shaped pattern in the U-shaped pattern that is away from the display area 10 (such as Figure 5 as shown), or Figure 7 As shown, the plurality of strip patterns 321 are all arranged perpendicularly to a bottom edge of the basic U-shaped pattern in the square-shaped pattern, which is away from the display area 10 .

[0048] Please refer to Figure 8It should also be added that when the anti-diffusion layer 32 is based on the U-shaped pattern, a plurality of strip patterns 321 can also be added on this basis, and at least some of the strip patterns 321 are arranged parallel to a bottom edge of the U-shaped pattern away from the display area 10, and also include at least some of the strip patterns 321 are arranged vertically to a bottom edge of the U-shaped pattern away from the display area 10. At this time, the anti-diffusion layer 32 is, for example, in a grid shape.

[0049] Please refer to Fig. 9 In addition, when the diffusion prevention layer 32 of the present application is based on a U-shaped pattern and also includes a plurality of strip patterns 321, the present application only limits at least part of the strip patterns 321 to be arranged to intersect with another part of the strip patterns 321. At this time, the diffusion prevention layer 32 also exists in a grid shape.

[0050] It should be noted that when the diffusion prevention layer 32 is based on a U-shaped pattern, the other additional patterns are located in the space surrounded by the U-shaped pattern and the connecting lines on both sides of the U-shaped pattern away from the bottom edge; when the diffusion prevention layer 32 is based on a U-shaped pattern, the other additional patterns are located inside the U-shaped pattern.

[0051] The above embodiments are only partially optional pattern settings of the anti-diffusion layer 32 in the display device 100 provided by the present application, but the present application is not limited thereto, as long as the anti-diffusion layer 32 includes at least a U-shaped pattern, the opening of the U-shaped pattern faces the display area 10, and the anti-diffusion layer 32 can be used to prevent the surfaces of the shading layer 31 and the filler 43 from contacting each other by physical blocking, and to prevent the generation of exudates between the contact surfaces of the shading layer 31 and the filler 43, and at the same time, it can also prevent the exudates on the surface of the filler 43 or the shading layer 31 facing the anti-diffusion layer 32 from penetrating to the side of the filler 43 away from the display area 10; the setting of the anti-diffusion layer 32 is conducive to reducing the risk of peeling of the cover glass 30 in the display device 100 in the non-display area 20, thereby helping to improve the service life of the display device 100 and ensure the quality of the display device 100.

[0052] Please refer to Figure 1-Figure 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.

[0053] Specifically, for example, the pattern of the diffusion prevention layer 32 is as follows: Figure 4 When the U-shaped pattern is shown, the orthographic projection of the diffusion prevention layer 32 on the light-emitting surface of the display device 100 includes a hollow portion, that is, the inner hollow portion of the U-shaped pattern; Figure 5-Figure 9As shown, for example, when the pattern of the anti-diffusion layer 32 is based on a U-shaped pattern / a U-shaped pattern and includes a plurality of parallel strip patterns 321, or is based on a U-shaped pattern / a U-shaped pattern and includes a plurality of intersecting strip patterns 321, etc., since there is a certain interval between the additional strip patterns 321, 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.

[0054] It should be noted that when the diffusion prevention layer 32 is Figure 3 , Figure 4 When the U-shaped pattern or the square-shaped pattern is shown, the manufacturing area of ​​the diffusion prevention layer 32 is small. When the diffusion prevention layer 32 is formed by printing, the number of printed lines is small, which can not only improve the service life of the display device 100 and ensure the quality of the display device 100, but also simplify the manufacturing process of the diffusion prevention layer 32 and reduce the material consumption required for the diffusion prevention layer 32. Figure 5-Figure 9 As shown, when the diffusion prevention layer 32 is based on the U-shaped pattern / the square-shaped pattern and further includes a plurality of stripe patterns 321 , the printing effect of the diffusion prevention layer 32 is better.

[0055] Fig.10 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle, please Figure 1 , Figure 2 Based on the reference Fig.10 Optionally, the orthographic projection of the anti-diffusion layer 32 on the light-emitting surface of the display device 100 is a whole surface.

[0056] Specifically, the present application also provides another optional embodiment, in which the anti-diffusion layer 32 is based on a U-shaped pattern and on the connecting lines on both sides of the U-shaped pattern away from the bottom edge, and the anti-diffusion layer 32 is filled and coated into a whole surface. At this time, the positive projection of the anti-diffusion layer 32 on the light-emitting surface of the display device 100 is a whole surface; the whole-surface anti-diffusion layer 32 is easier to coat than the anti-diffusion layer 32 with a hollow portion, which is beneficial to the production yield of the anti-diffusion layer 32, and can fully isolate the light-shielding layer 31 and the filling member 43.

[0057] Fig.11 The embodiment of the present application is shown as follows Figure 1 Another perspective top view of area B in the middle, please Figure 1 , Figure 2 Based on the reference Fig.11 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, and the edge of the anti-diffusion layer 32 includes a U-shaped edge.

[0058] Specifically, the present application also provides another optional embodiment, that is, the diffusion prevention layer 32 is based on a U-shaped pattern and a connecting line on both sides of the U-shaped pattern away from the bottom side, and includes multiple hollow parts in the area surrounded by the U-shaped pattern and the connecting line. Except for the positions where the multiple hollow parts are located, the rest of the parts are made of the material of the diffusion prevention layer 32; that is, at this time, the positive projection of the diffusion prevention layer 32 on the light-emitting surface of the display device 100 includes multiple hollow parts. The present application does not specifically limit the shape of the hollow part, for example, the positive projection of the hollow part on the light-emitting surface of the display device 100 can be a circle, various polygons, etc.; the present application does not limit the pattern of the hollow part in an diffusion prevention layer 32 to be the same in shape and area, etc., as long as the positive projection of the diffusion prevention layer 32 on the light-emitting surface of the display device 100 includes at least one hollow part.

[0059] Please refer to Figure 3 , Optionally, the width of each side of the U-shaped pattern is D, D≥0.12mm.

[0060] Specifically, for example, when the anti-diffusion layer 32 only includes a U-shaped pattern, the anti-diffusion layer 32 is equivalent to being formed by three sides. The present application provides an optional embodiment in which the width of any one of the three sides of the U-shaped pattern is D, and the width of each side in the anti-diffusion layer 32 pattern can be set to be equal to or greater than 0.12 mm, which can ensure that the manufacturing area of ​​the anti-diffusion layer 32 is small. When the anti-diffusion layer 32 is formed by printing, the number of printed lines is small and the printed lines are thin. While being used to improve the service life of the display device 100 and ensure the quality of the display device 100, it can also reduce the material consumption required for the manufacturing of the anti-diffusion layer 32; at the same time, if the manufacturing area of ​​the anti-diffusion layer 32 is too large, when it contacts with the filler 43, it is easy to cause too many bubbles to appear between the contact surfaces, thereby reducing the bonding effect; and if the manufacturing area of ​​the anti-diffusion layer 32 is small, it can also avoid the situation where the material overflows when too much material is required for the manufacturing of the anti-diffusion layer 32.

[0061] It should be supplemented that the present application provides a variety of patterns of the diffusion prevention layer 32, such as a U-shaped pattern, a square-shaped pattern, a grid pattern, a stripe pattern, a full-surface pattern, and the like. Among them, taking the anti-diffusion layer 32 as a whole-surface pattern as an example, the printing area occupied by the anti-diffusion layer 32 with a whole-surface pattern is set to 100%; compared with the anti-diffusion layer 32 with a whole-surface pattern, the printing area occupied by the anti-diffusion layer 32 with a U-shaped pattern is 15.7%, the printing area occupied by the anti-diffusion layer 32 with a square pattern is 30.7%, the printing area occupied by the anti-diffusion layer 32 with a horizontal bar pattern in the stripe pattern is 60.8%, the printing area occupied by the anti-diffusion layer 32 with a vertical bar pattern is 62.7%, and the printing area occupied by the anti-diffusion layer 32 with a grid pattern is 80.8%; it can be seen that when making the anti-diffusion layer 32, the printing areas required for different patterns are arranged from small to large as follows: U-shaped pattern < square pattern < horizontal bar pattern < vertical bar pattern < grid pattern < whole-surface pattern.

[0062] The present application has conducted experiments on the diffusion interception effect of at least some of the patterns on the seepage of the filling member 43. After experimental comparison, the diffusion interception effect of the anti-diffusion layer 32 on the seepage of the filling member 43 is the best. The diffusion interception effect of the anti-diffusion layer 32 on the seepage of the filling member 43 is ranked from the best to the second best as follows: the anti-diffusion layer of ... Figure 4 As shown), a U-shaped pattern diffusion barrier layer (as shown Figure 3 As shown), a diffusion-proof layer with a horizontal stripe pattern (as Figure 5 As shown), a grid-shaped diffusion-proof layer (as shown Figure 8 , Fig. 9 As shown), a vertical stripe pattern anti-diffusion layer (as Figure 7 As shown), a diffusion-proof layer with a whole-surface pattern (such as Fig.10 It should be noted that the anti-diffusion layer with a U-shaped pattern and the anti-diffusion layer with a U-shaped pattern have almost the same interception effect on the exudate on the surface of the filling member 43, and the anti-diffusion layer with a horizontal stripe pattern, the anti-diffusion layer with a grid pattern, and the anti-diffusion layer with a vertical stripe pattern have almost the same interception effect on the exudate on the surface of the filling member 43.

[0063] It can be seen that the diffusion prevention layer 32 provided in the present application, when it is made into a U-shaped pattern or a square-shaped pattern, requires the smallest printing area, does not need to occupy too much space, and is relatively simple to make; therefore, when the U-shaped pattern diffusion prevention layer or the square-shaped pattern diffusion prevention layer is set, the printing material used is the least, which can avoid the consumption of too much printing material and the overflow problem caused by excessive use of printing material, thereby helping to avoid the impact of the printed diffusion prevention layer on the appearance of the cover glass. The U-shaped pattern diffusion prevention layer and the square-shaped pattern diffusion prevention layer have the best diffusion interception effect on the seepage substance in the filler 43. Therefore, the present application provides a preferred method that when the diffusion prevention layer 32 is added, the diffusion prevention layer 32 is made into a U-shaped pattern or a square-shaped pattern.

[0064] Please refer to Figure 1-Figure 11 Optionally, the orthographic projection of the anti-diffusion layer 32 on the light-emitting surface of the display device 100 at least partially overlaps with the orthographic projection of the filling member 43 on the light-emitting surface of the display device 100 .

[0065] Specifically, the anti-diffusion layer 32 provided in the present application has the following characteristics: the anti-diffusion layer 32 includes at least a U-shaped pattern, the opening of the U-shaped pattern faces the display area 10; in the present application, the filling member 43 and the anti-diffusion layer 32 are arranged in the orthographic projection of the light-emitting surface of the display device 100, and the filling member 43 does not exceed the side edge, left and right edges (such as the U-shaped pattern away from the display area 10) of the U-shaped pattern. Figure 3 As shown), at this time, no matter the diffusion prevention layer 32 is a U-shaped pattern, a square-shaped pattern, a plurality of strip patterns 321 on the basis of the U-shaped pattern / square-shaped pattern, or the space enclosed by the U-shaped pattern and its edge connection line includes a plurality of hollow parts, the orthographic projection of the diffusion prevention 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. Fig.10 As shown, optionally, the orthographic projection of the anti-diffusion layer 32 on the light-emitting surface of the display device 100 covers the orthographic projection of the filling member 43 on the light-emitting surface of the display device 100. In short, as long as the filling member 43 and the anti-diffusion layer 32 are in the orthographic projection 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, the filling member 43 does not exceed the side edge, left and right edges of the U-shaped pattern away from the display area 10.

[0066] With such a configuration, the anti-diffusion layer 32 can be used to prevent the exudate of the filler 43 or the light shielding layer 31 from further leaking to the side away from the display area 10 by means of physical blocking, thereby further reducing the risk of peeling of the cover glass 30 in the display device 100 .

[0067] It should be noted that, since the side of the filling member 43 in the display device 100 close to the display area 10 includes an insulating material (not shown in the figure), the insulating material can prevent the exudate on the surface of the filling member 43 from penetrating into the display area 10. Therefore, it is not required that the anti-diffusion layer 32 added in the present application must be able to prevent the exudate on the surface of the filling member 43 from penetrating into the display area 10; therefore, the anti-diffusion layer 32 added in the present application only needs to include the above-mentioned U-shaped pattern.

[0068] Please refer to Figure 1 and Figure 2 Optionally, the orthographic projection of the light shielding layer 31 on the light emitting surface of the display device 100 covers the orthographic projection of the anti-diffusion layer 32 on the light emitting surface of the display device 100 .

[0069] Specifically, in order to facilitate the production 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, in which the orthographic projection of the light-shielding layer 31 on the light-emitting surface of the display device 100 covers the 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 cover the entire non-display area 20 of the display device 100, and the anti-diffusion layer 32, the filling member 43, etc. are all located 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 display effect of the display device 100.

[0070] Optionally, the dyne value M of the anti-diffusion layer 32 is 29dyne≤M≤32dyne.

[0071] It should be noted that the dyne value is used to express the force of mutual traction between two adjacent parts of the liquid surface per unit length, and is mainly used to express the magnitude of surface tension. Furthermore, the dyne value is mainly used to express the surface tension coefficient; the dyne value is usually detected using a dyne pen (surface tension test pen).

[0072] Specifically, the present application provides a diffusion-proof layer 32 whose dyne value ranges from 29dyne to 32dyne (including the endpoint values). It is currently difficult to find a material with a dyne value less than 29dyne in the industry that can be used as the diffusion-proof layer 32, and there is a risk of increasing the production cost of the display device 100 if one wants to find a diffusion-proof layer 32 with a dyne value less than 29dyne; in addition, materials with a dyne value less than 29dyne have a problem of low printability, and are prone to surface bubbles, pits and other undesirable conditions when printing the material. Excessive number of bubbles and pits will cause the diffusion-proof layer 32 to have a poor interception effect on the exudate in the filler 43, and even the bubbles and pits on the surface of the diffusion-proof layer 32 will produce traction on the exudate in the filler 43. Therefore, the present application may choose to set the dyne value of the diffusion-proof layer 32 to be equal to or greater than 29dyne.

[0073] In addition, if the corresponding dyne value of the anti-diffusion layer 32 is greater than 32dyne, the interception effect of the anti-diffusion layer 32 on the exudate in the filling member 43 will become worse, that is, the interception effect of the anti-diffusion layer 32 on the exudate in the filling member 43 will become worse as the dyne value of the anti-diffusion layer 32 increases. Therefore, the present application can choose to set the dyne value of the anti-diffusion layer 32 to be equal to or less than 32dyne.

[0074] In summary, the present application controls the dyne value of the anti-diffusion layer 32 between 29dyne-32dyne (including the endpoint values), which is beneficial to improving the printability of the anti-diffusion layer 32, and bubbles are not easy to appear during printing, which can avoid the phenomenon of pits on the surface of the anti-diffusion layer 32, thereby ensuring the anti-diffusion layer 32 The interception effect of the exudate in the filling member 43 is guaranteed.

[0075] In addition, the material for making the anti-diffusion layer 32 provided in the present application can be selected as a material that has no absorption effect on the exudate in the filling member 43, or a material that can inhibit the generation of exudate on the surface of the filling member 43; the present application does not limit the specific material for making the anti-diffusion layer, as long as the anti-diffusion layer 32 can prevent the diffusion of exudate on the surface of the filling member 43.

[0076] In summary, the limiting conditions of the diffusion prevention layer 32 provided in the present application include: first, the dyne value of the diffusion prevention layer 32 is 29dyne-32dyne (including the end value); second, the diffusion prevention layer 32 has the characteristic of not absorbing the exudate in the filler 43, or the characteristic of inhibiting the exudate from the surface of the filler 43. It should be noted that the diffusion prevention layer 32 provided in the present application only needs to meet one of the above two limiting conditions, and the present application does not limit the diffusion prevention layer 32 to meet both of the above two limiting conditions.

[0077] Optionally, the anti-diffusion layer 32 is provided by silk-screen printing or adhesion.

[0078] Specifically, when the anti-diffusion layer 32 is a coating, the anti-diffusion layer 32 can be arranged on the side of the light-shielding layer 31 close to the display panel 40 by silk-screen printing, or the anti-diffusion layer 32 can be arranged on the side of the filling member 43 close to the cover glass 30 by silk-screen printing; the anti-diffusion layer 32 is manufactured by silk-screen printing, and the equipment cost required for silk-screen printing of the anti-diffusion layer 32 is relatively low, which is conducive to reducing the manufacturing cost of the anti-diffusion layer 32.

[0079] In addition, the anti-diffusion layer 32 can also be attached to the side of the shading layer 31 close to the display panel 40, or to the side of the filling member 43 close to the cover glass 30; adding the anti-diffusion layer 32 in the display device 100 by attaching it is helpful to simplify the overall manufacturing process of the display device 100.

[0080] Optionally, the anti-diffusion layer 32 and at least one film layer structure in the display device 100 are manufactured in the same layer using the same process.

[0081] Specifically, the anti-diffusion layer 32 can be made of a material with a light-shielding effect, thereby eliminating the need for making the light-shielding layer 31. The anti-diffusion layer 32 with a light-shielding effect can be used to prevent the display device 100 from leaking light, and to prevent the substance in the filler 43 from seeping toward the cover glass 30, which is beneficial to ensuring the reliability of the cover glass 30 and the service life of the display device 100.

[0082] In addition, the anti-diffusion layer 32 can also be made of a material with a filling effect, that is, the anti-diffusion layer 32 can also play the effect of filling the suspended area between the cover glass 30 and the display panel 40 in the display device 100, so that the anti-diffusion layer 32 with a filling effect replaces the filling member 43, thereby eliminating the need to make the filling member 43, which is beneficial to simplifying the manufacturing process of the display device 100.

[0083] In addition, without adjusting the light shielding layer 31 and the filler 43, the anti-diffusion layer 32 can also be manufactured simultaneously with at least one film layer structure in the display panel 40 using the same process, which can reduce the manufacturing process of the display device 100 and is conducive to simplifying the manufacturing process of the display device 100. It should be noted that the present application does not specifically limit the specific manufacturing process and process of the anti-diffusion layer 32, as long as the anti-diffusion layer 32 can ensure the reliability of the display device 100 and prevent the cover glass 30 from peeling off.

[0084] Optionally, the filling piece 43 is made of elastic material.

[0085] Specifically, the filler 43 is disposed between the display panel 40 and the cover glass 30. The present application provides a filler 43 made of an elastic material. When the display device 100 is subjected to an external force, the elastic material has a certain elastic force, which can be used to prevent at least one of the cover glass 30 or the display panel 40 from breaking, thereby improving the service life of the display device 100. It should be noted that the elastic material is, for example, a glue material that has elasticity after solidification.

[0086] In addition, the present application does not impose too many restrictions on the production area of ​​the filling piece 43. It can also be said that the present application does not impose specific restrictions on the overlapping area between the filling piece 43 and the anti-diffusion layer 32. For example, the filling piece 43 can be an integral piece, or it can be formed by multiple sub-components, as long as it can be used to fill the suspended area between the display panel 40 and the cover glass 30, and the anti-diffusion layer 32 can prevent the substance in the filling piece 43 from leaking out and affecting the reliability of the display device 100.

[0087] The manufacturing process of the display device is briefly described here. The display device includes a cover glass and a display panel that are relatively arranged. The display device includes a step area.

[0088] Step 101, providing a cover glass, coating a light shielding layer on a non-display area of ​​the cover glass, the light shielding layer being located on an inner surface of the cover glass;

[0089] Step 102, printing an anti-diffusion layer on the surface of the side of the light shielding layer corresponding to the step area away from the cover glass, wherein the printing area of ​​the anti-diffusion layer is located inside the area of ​​the light shielding layer;

[0090] Step 103, applying a filler on a side of the display panel corresponding to the step area close to the cover glass, and waiting for the filler to solidify;

[0091] Step 104 , assembling the display panel and the cover glass, wherein a surface of the anti-diffusion layer away from the cover glass is at least partially in contact with a surface of the filler close to the cover glass.

[0092] The present application adds an anti-diffusion layer 32 in the display device 100, and the anti-diffusion layer 32 is located between the light-shielding layer 31 and the filling member 43. The surface contact between the light-shielding layer 31 and the filling member 43 is avoided by physical blocking, thereby reducing the generation of exudate between the contact surfaces of the light-shielding layer 31 and the filling member 43, and at the same time, it can prevent the exudate from penetrating to the side of the filling member 43 away from the display area 10.

[0093] It should be noted that the display device 100 provided in the present application can be: a mobile phone, a tablet computer, a television, a step wiring area, a laptop computer, a car display screen, a navigator, or any other product or component with a display function.

[0094] It can be seen from the above embodiments that the display device provided by the present invention achieves at least the following beneficial effects:

[0095] The present application provides a display device, wherein a filler is arranged between a cover glass in a non-display area of ​​the display device and a display panel, and a light-shielding layer is arranged on a side of the cover glass close to the filler. The present application provides an anti-diffusion layer including at least a U-shaped pattern by adding an anti-diffusion layer between the light-shielding layer and the filler, wherein the orthographic projection of the filler does not exceed the U-shaped edge of the U-shaped pattern, so as to reduce the contact area between the filler and the light-shielding layer through the anti-diffusion layer of the U-shaped pattern, and at the same time prevent exudate appearing on the contact surface of the filler and the light-shielding layer from diffusing to the outside of the U-shaped edge of the U-shaped pattern, which is beneficial to avoid the problem of reduced adhesion in the non-display area of ​​the display device and improve the overall reliability of the display device.

[0096] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A display device, characterized in that: A display area and a non-display area surrounding the display area are provided, and the display device comprises a cover glass and a display panel which are arranged opposite to each other; the cover glass is located at a light emitting side of the display panel, and a light shielding layer is provided on a side of the cover glass close to the display panel in the non-display area; The cover glass further comprises an anti-diffusion layer arranged in the non-display area, wherein the anti-diffusion layer is located on a side of the light shielding layer close to the display panel; In the non-display area, the display device further comprises a filling member disposed between the anti-diffusion layer and the display panel, the filling member is in direct contact with the anti-diffusion layer, and the filling member is made of a glue material having elasticity after solidification; The anti-diffusion layer at least comprises a U-shaped pattern, the opening of the U-shaped pattern faces the display area; in the orthographic projection of the filler and the anti-diffusion layer on the light-emitting surface of the display device, the filler does not exceed the U-shaped edge of the U-shaped pattern; The orthographic projection of the anti-diffusion layer on the light-emitting surface of the display device at least partially overlaps with the orthographic projection of the filling member on the light-emitting surface of the display device; The dyne value M of the diffusion-resistant layer is 29dyne≤M≤32dyne.

2. The display device according to claim 1, characterized in that The diffusion prevention layer further includes at least one stripe pattern, at least one end of the stripe pattern contacts the U-shaped edge.

3. The display device according to claim 2, characterized in that: The anti-diffusion layer includes at least one hollow portion in an orthographic projection on the light-emitting surface of the display device.

4. The display device according to claim 2, characterized in that: The anti-diffusion layer has an orthographic projection on the light-emitting surface of the display device in a whole surface shape.

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

6. The display device according to claim 1, characterized in that: The orthographic projection of the anti-diffusion layer on the light-emitting surface of the display device covers the orthographic projection of the filling member on the light-emitting surface of the display device.

7. The display device according to claim 1, characterized in that: The orthographic projection of the light shielding layer on the light emitting surface of the display device covers the orthographic projection of the anti-diffusion layer on the light emitting surface of the display device.

8. The display device according to claim 1, characterized in that: The width of each side of the U-shaped pattern is D, and D≥0.12 mm.

9. The display device according to claim 1, characterized in that: The anti-diffusion layer is provided by silk-screen printing or attachment.

10. The display device according to claim 1, characterized in that The anti-diffusion layer and at least one film layer structure in the display device are manufactured by the same process and in the same layer.

Images