Display device

Abstract

The embodiment of the utility model discloses a display device. The display device comprises a cover plate, an ink layer, a bonding layer, a connecting layer, a display module and an edge line, an ink layer is arranged on the edge area of the side, facing the display module, of the cover plate, the bonding layer is arranged between the cover plate and the display module, and the bonding layer covers part of the ink layer close to the display area; the connecting layer is bonded with the edge of the display module and the ink layer; an edge line is arranged on the side, facing the display module, of the ink layer and surrounds the connecting layer. The cover plate comprises a first blocking structure and / or the ink layer comprises a second blocking structure, and the first blocking structure and the second blocking structure can limit the area where the connecting layer adheres to the ink layer. According to the scheme, the filled connecting layer can be limited in a required area, and the peel strength between the cover plate and the display module is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of display panels, and in particular to a display device. Background Art

[0002] When the touch screen is manufactured, it is necessary to fill room temperature vulcanized silicone rubber (RTV) around the edges of the cover plate and the display module to enhance the peel strength between the two to meet the assembly and reliability verification requirements.

[0003] However, the customer has strict restrictions on the filling range of RTV filled between the cover plate and the display module. The basic filling specification is that the edge of the display module should be expanded within a range of ≤0.8mm, and there should be no glue breakage, so that the double-sided tape can be applied to the remaining border area of ​​the cover plate for complete machine assembly. In the process of filling RTV between the cover plate and the display module, if the amount of RTV filled is too small, glue breakage is likely to occur, which will prevent the cover plate and the display module from being well bonded, and the peel strength between the cover plate and the display module will not meet the requirements. In the process of filling RTV between the cover plate and the display module, if the amount of RTV filled is too much, the RTV will overflow the specified filling range, and it will not be possible to leave enough area for the subsequent application of double-sided tape for complete machine assembly, thus affecting the assembly of the complete machine. Utility Model Content

[0004] The embodiment of the utility model provides a display device, so as to limit the filled connection layer to a required area and enhance the peeling strength between the cover plate and the display module.

[0005] The embodiment of the utility model provides a display device, which includes: a cover plate, an ink layer, an adhesive layer, a connecting layer, a display module and an edge line;

[0006] The ink layer is disposed at the edge area of ​​the cover plate facing the display module, the adhesive layer is disposed between the cover plate and the display module, and the adhesive layer covers a portion of the ink layer close to the display area; the connecting layer adheres the edge of the display module and the ink layer; an edge line is disposed on the side of the ink layer facing the display module, and the edge line surrounds the connecting layer;

[0007] The cover plate includes a first barrier structure and / or the ink layer includes a second barrier structure, and both the first barrier structure and the second barrier structure can limit the area where the connecting layer adheres to the ink layer.

[0008] Optionally, the first blocking structure includes a blocking groove, the display module includes a binding area, and the edge area of ​​the cover plate includes a first edge area;

[0009] The blocking groove is disposed in the first edge region of the cover plate on a side facing the display module, and the blocking groove surrounds a portion of the display module, and the first edge region is a region outside a vertical projection of the binding region on the edge region of the cover plate;

[0010] Along the horizontal direction, the distance between the edge of the blocking groove away from the display area and the display module is less than or equal to the maximum preset glue width.

[0011] Optionally, along the horizontal direction, the distance between the edge of the blocking groove away from the display area and the edge of the blocking groove close to the display area is greater than the minimum set width, and the distance between the edge of the blocking groove away from the display area and the edge of the blocking groove close to the display area is less than the difference between the maximum preset glue width and the bonding error precision;

[0012] Along the direction perpendicular to the horizontal direction, the depth of the blocking groove is greater than a minimum set depth, and the depth of the blocking groove is less than the thickness of the cover plate.

[0013] Optionally, the first blocking structure further includes a first polishing surface;

[0014] The first polishing surface is a side of the cover plate facing the display module, and a thickness of an edge area of ​​the first polishing surface is greater than a thickness of the display area.

[0015] Optionally, the arc R angle of the first polishing surface ranges from 1 cm to 10 cm.

[0016] Optionally, the first polishing surface is symmetrical about the center of the display area.

[0017] Optionally, the second blocking structure includes a second polishing surface;

[0018] The second polishing surface is a side of the ink layer facing the display module, and the thickness of the second polishing surface at an edge away from the display module is greater than the thickness of the edge close to the display module.

[0019] Optionally, the arc R angle of the second polishing surface ranges from 1 cm to 10 cm.

[0020] Optionally, the second polishing surface is symmetrical about the center of the display area.

[0021] Optionally, along the horizontal direction, the distance between the edge line and the display module is equal to the maximum preset glue width, and the edge line is used to mark the farthest point from the display area where the connecting layer adheres to the ink layer along the horizontal direction.

[0022] The embodiment of the utility model can prevent the connection layer from expanding outward in the direction away from the display module through the first blocking structure included in the cover plate or the second blocking structure included in the ink layer, thereby limiting the area where the connection layer adheres to the ink layer. Therefore, this solution can limit the increased amount of connection layer to the required area, improve the peeling strength between the cover plate and the display module, and leave enough area for subsequent double-sided adhesive tape to assemble the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A cross-sectional view of a display device provided by an embodiment of the utility model;

[0025] Figure 2 A top view of a cover plate facing the display module provided in an embodiment of the utility model;

[0026] Figure 3 A top view of a display module facing the cover plate provided by an embodiment of the utility model;

[0027] Figure 4 A cross-sectional view of another display device provided by an embodiment of the utility model;

[0028] Figure 5 A cross-sectional view of another display device provided by an embodiment of the utility model;

[0029] Figure 6 A cross-sectional view of another display device provided by an embodiment of the utility model;

[0030] Figure 7 A top view of another cover plate provided in an embodiment of the utility model, facing the display module. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Figure 1 A cross-sectional view of a display device provided by an embodiment of the utility model, such as Figure 1 As shown, the display device includes: a cover plate 110, an ink layer 120, an adhesive layer 130, a connecting layer 140, a display module 150 and an edge line 160;

[0034] An ink layer 120 is provided at the edge area of ​​the cover plate 110 on the side facing the display module 150, and an adhesive layer 130 is provided between the cover plate 110 and the display module 150, and the adhesive layer 130 covers a portion of the ink layer 120 close to the display area C; the connecting layer 140 is bonded to the edge of the display module 150 and the ink layer 120; an edge line 160 is provided on the side of the ink layer 120 facing the display module 150, and the edge line 160 surrounds the connecting layer 140; the cover plate 110 includes a first blocking structure and / or the ink layer 120 includes a second blocking structure, and both the first blocking structure and the second blocking structure can limit the area where the connecting layer 140 adheres to the ink layer 120.

[0035] The connection layer 140 is filled around the edges of the cover plate 110 and the display module 150, which can enhance the peeling strength between the cover plate 110 and the display module 150 to enhance the reliability of the display device. The edge line is used to mark the maximum area boundary of the connection layer adhesive ink layer.

[0036] At present, the connection layer 140 generally uses room temperature vulcanizing silicone rubber (RTV). Since RTV has a certain fluidity and the edge of the display module 150 and the cover plate 110 have a certain height, the RTV filled between the cover plate 110 and the edge of the display module 150 will expand outwards away from the display module 150 under the influence of gravity. Obviously, if the amount of RTV filled between the cover plate 110 and the edge of the display module 150 is too much, RTV will leave a range that can be filled; if the amount of RTV filled between the cover plate 110 and the edge of the display module 150 is too little, RTV is prone to glue breaking, which will make the cover plate 110 and the display module 150 not bonded well, and then the peel strength between the cover plate 110 and the display module 150 will not meet the requirements.

[0037] In this regard, the first barrier structure included in the cover plate 110 and the second barrier structure included in the ink layer 120 of this solution can limit the area where the connection layer 140 adheres to the ink layer 120, that is, prevent the connection layer 140 from expanding in a direction away from the display module 150. Thus, the first barrier structure and the second barrier structure can limit the connection layer 140 required to meet the peel strength between the cover plate 110 and the display module 150 to the required area. For example, Figure 1 The groove in is an exemplary first blocking structure. The groove can accommodate part of the connection layer 140, so that the part of the connection layer 140 affected by gravity is filled in the groove, thereby preventing the connection layer 140 from expanding away from the display module 150, thereby limiting the connection layer 140 to a specified area.

[0038] In the embodiment of the utility model, the first blocking structure included in the cover plate 110 or the second blocking structure included in the ink layer 120 can prevent the connection layer 140 from expanding outward in the direction away from the display module 150, thereby limiting the area where the connection layer 140 adheres to the ink layer 120. Therefore, this solution can limit the increased amount of connection layer 140 to the required area, improve the peeling strength between the cover plate 110 and the display module 150, and reserve enough area for subsequent application of double-sided tape for whole machine assembly.

[0039] Based on the above embodiment, optionally, Figure 2 A top view of a cover plate facing a display module provided in an embodiment of the utility model. Figure 3 This is a top view of a display module facing the cover plate provided by an embodiment of the utility model. Figure 1-Figure 3As shown, the first blocking structure includes a blocking groove 111, the display module 150 includes a binding area 151, and the edge area 10 of the cover plate 110 includes a first edge area 11; the blocking groove 111 is arranged in the first edge area 11 on the side of the cover plate 110 facing the display module 150, and the blocking groove 111 surrounds part of the display module 150, and the first edge area 11 is the area outside the vertical projection of the binding area 151 on the edge area 10 of the cover plate 110; along the horizontal direction M, the distance Y between the edge of the blocking groove 111 away from the display area C and the display module 150 is less than or equal to the maximum preset glue width.

[0040] The blocking groove 111 can be formed by etching technology, and the blocking groove 111 is used to accommodate a portion of the connection layer 140 affected by gravity, so as to prevent the connection layer 140 from expanding in a direction away from the display module 150, thereby limiting the area where the connection layer 140 adheres to the ink layer 120. The maximum preset glue width refers to the maximum distance that can be filled with the connection layer 140 from the edge of the display module 150 toward the edge of the cover plate 110 in the horizontal direction M, for example, the maximum preset glue width is set to 0.8 mm.

[0041] Specifically, along the horizontal direction M, the distance X between the edge of the blocking groove 111 away from the display area C and the edge of the blocking groove 111 close to the display area C is greater than the minimum set width, and the distance X between the edge of the blocking groove 111 away from the display area C and the edge of the blocking groove 111 close to the display area C is less than the difference between the maximum preset glue width and the bonding error accuracy; along the vertical horizontal direction N, the depth Z of the blocking groove 111 is greater than the minimum set depth, and the depth Z of the blocking groove 111 is less than the thickness of the cover plate 110.

[0042] Among them, the minimum set width is the distance X between the two edges of the blocking groove 111 preset along the horizontal direction M. The bonding error precision is the error precision caused by gravity, attachment method or filling method when bonding the connecting layer 140. Therefore, if the minimum set width is set to 0.1mm, the bonding error precision is 0.2mm, and the maximum preset adhesive width is set to 0.8mm. Along the horizontal direction M, the distance X between the edge of the blocking groove 111 away from the display area C and the edge of the blocking groove 111 close to the display area C ranges from: [0.1mm, 0.6mm].

[0043] The minimum set depth is the minimum depth of the blocking groove 111 preset along the vertical and horizontal directions N. If the minimum set depth is set to 0.1 mm, the thickness of the cover plate 110 is set to 1 mm. Along the vertical and horizontal directions N, the depth Z of the blocking groove 111 ranges from [0.1 mm, 1 mm).

[0044] In addition, the greater the distance X between the edge of the blocking groove 111 away from the display area C and the edge of the blocking groove 111 close to the display area C along the horizontal direction M, the greater the depth Z of the blocking groove 111 along the vertical direction N, the stronger the ability of the blocking groove 111 to block the connection layer 140 affected by gravity, and the larger the amount of the connection layer 140 accommodated, and the stronger the peeling strength between the cover plate 110 and the display module 150 is correspondingly improved.

[0045] Based on the above embodiment, optionally, Figure 4 A cross-sectional view of another display device provided by an embodiment of the utility model. Figure 2 and Figure 4 As shown, the first blocking structure further includes a first polishing surface 112 ; the first polishing surface 112 is a side of the cover plate 110 facing the display module 150 , and the thickness of the edge area of ​​the first polishing surface 112 is greater than the thickness of the display area C.

[0046] Among them, the thickness of the edge area of ​​the first polished surface 112 is greater than the thickness of the display area C. The connection layer 140 filled between the cover plate 110 and the edge of the display module 150 will gather toward the display area C of the first polished surface 112 due to the influence of gravity. That is, the connection layer 140 is not easy to expand outward in the direction away from the display area C due to the influence of gravity, thereby limiting the connection layer 140 to a specified area.

[0047] Based on the above embodiment, optionally, the arc R angle range of the first polishing surface 112 is 1 cm-10 cm. The first polishing surface 112 is symmetrical with respect to the center of the display area C.

[0048] Specifically, the curvature R angle range of the first polishing surface 112 is 1-10 cm, which means that the radius range of the arc where the first polishing surface 112 is located is 1 cm-10 cm.

[0049] Based on the above embodiment, optionally, Figure 5 A cross-sectional view of another display device provided by an embodiment of the utility model. Figure 5 As shown, the second blocking structure includes a second polishing surface 121 ; the second polishing surface 121 is a side of the ink layer 120 facing the display module 150 , and the thickness of the second polishing surface 121 away from the display module 150 is greater than the thickness of the edge close to the display module 150 .

[0050] The thickness of the edge of the second polished surface 121 away from the display module 150 is greater than the thickness of the edge close to the display module 150. The connection layer 140 filled between the cover plate 110 and the edge of the display module 150 will be gathered in the direction where the thickness of the second polished surface 121 is relatively thin due to the influence of gravity. That is, the connection layer 140 is not easy to expand outward in the direction away from the display area C due to the influence of gravity, thereby limiting the connection layer 140 to a specified area.

[0051] Based on the above embodiment, optionally, the arc R angle range of the second polishing surface 121 is 1-10 cm. The second polishing surface 121 is symmetrical with respect to the center of the display area C.

[0052] Specifically, the curvature R angle range of the second polishing surface 121 being 1-10 cm means that the radius range of the arc where the second polishing surface 121 is located is 1 cm-10 cm.

[0053] Based on the above embodiment, optionally, Figure 6 A cross-sectional view of another display device provided by an embodiment of the utility model, Figure 7 A top view of another cover plate facing the display module provided in an embodiment of the utility model. Figure 6 and Figure 7 As shown, along the horizontal direction M, the distance D between the edge line 160 and the display module 150 is equal to the maximum preset glue width, and the edge line 160 is used to mark the farthest point from the display area C along the horizontal direction M where the connecting layer 140 adheres to the ink layer 120 .

[0054] The utility model exemplarily shows Figure 1 , Figure 4 as well as Figure 5 Cross-sectional views of three display devices. Figure 1 , Figure 4 as well as Figure 5 , Figure 1 The blocking groove 111 on the middle cover plate 110 can limit the area where the connecting layer 140 adheres to the ink layer 120. Figure 4 The first polished surface 112 of the middle cover plate 110 can limit the area where the connecting layer 140 adheres to the ink layer 120. Figure 5 The second polishing surface 121 of the ink layer 120 can limit the area where the connecting layer 140 adheres to the ink layer 120. The utility model also includes a display device provided with at least any two of the blocking groove 111, the first polishing surface 112 and the second polishing surface 121, which will not be described in detail in this solution.

[0055] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0056] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A display device, characterized in that: include: Cover plate, ink layer, adhesive layer, connecting layer, display module and edge line; The ink layer is disposed at an edge area of ​​the cover plate facing the display module, the adhesive layer is disposed between the cover plate and the display module, and the adhesive layer covers a portion of the ink layer close to the display area; The connection layer is bonded to the edge of the display module and the ink layer; an edge line is arranged on a side of the ink layer facing the display module, and the edge line surrounds the connection layer; The cover plate includes a first barrier structure and / or the ink layer includes a second barrier structure, and both the first barrier structure and the second barrier structure can limit the area where the connecting layer adheres to the ink layer.

2. The display device according to claim 1, characterized in that The first blocking structure includes a blocking groove, the display module includes a binding area, and the edge area of ​​the cover plate includes a first edge area; The blocking groove is disposed in the first edge region of the cover plate on a side facing the display module, and the blocking groove surrounds a portion of the display module, and the first edge region is a region outside a vertical projection of the binding region on the edge region of the cover plate; Along the horizontal direction, the distance between the edge of the blocking groove away from the display area and the display module is less than or equal to the maximum preset glue width.

3. The display device according to claim 2, characterized in that: In the horizontal direction, the distance between the edge of the blocking groove away from the display area and the edge of the blocking groove close to the display area is greater than the minimum set width, and the distance between the edge of the blocking groove away from the display area and the edge of the blocking groove close to the display area is less than the difference between the maximum preset glue width and the bonding error precision; Along the direction perpendicular to the horizontal direction, the depth of the blocking groove is greater than a minimum set depth, and the depth of the blocking groove is less than the thickness of the cover plate.

4. The display device according to any one of claims 1 to 2, characterized in that: The first blocking structure further includes a first polishing surface; The first polishing surface is a side of the cover plate facing the display module, and a thickness of an edge area of ​​the first polishing surface is greater than a thickness of the display area.

5. The display device according to claim 4, characterized in that: The arc R angle of the first polishing surface ranges from 1 cm to 10 cm.

6. The display device according to claim 4, characterized in that: The first polishing surface is symmetrical about the center of the display area.

7. The display device according to any one of claims 1 to 2, characterized in that: The second blocking structure includes a second polishing surface; The second polishing surface is a side of the ink layer facing the display module, and the thickness of the second polishing surface at an edge away from the display module is greater than the thickness of the edge close to the display module.

8. The display device according to claim 7, characterized in that: The arc R angle of the second polishing surface ranges from 1 cm to 10 cm.

9. The display device according to claim 7, characterized in that: The second polishing surface is symmetrical about the center of the display area.

10. The display device according to claim 1, characterized in that: Along the horizontal direction, the distance between the edge line and the display module is equal to the maximum preset glue width, and the edge line is used to mark the farthest point from the display area where the connecting layer adheres to the ink layer along the horizontal direction.

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