Display module, display device and bonding layer die cutting equipment

Abstract

The utility model discloses a display module, a display device and bonding layer die cutting equipment. The display module comprises a display panel which comprises a display area and a non-display area; the cover plate is arranged on the light emitting side of the display panel; the bonding layer is arranged between the display panel and the cover plate, and the bonding layer can be used for bonding the display panel and the cover plate; wherein the bonding layer covers a display area and a part of a non-display area of the display panel, and an ink layer is arranged on the side wall of the bonding layer. The side view white edge phenomenon of the display module can be improved.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a display module, a display device and an adhesive layer die-cutting device. Background Art

[0002] With the advancement of display technology, the application of display modules is becoming more and more extensive, and the corresponding requirements for display modules are also becoming higher and higher.

[0003] However, the display module in the related art has a white edge problem when the edge is viewed from the side. The reason is that the display panel and the cover plate in the display module are bonded by optical glue, and the side wall of the optical glue is in contact with the air. Due to the difference in refractive index, the side wall of the optical glue has a strong ability to reflect light, and a white edge will be seen when the side wall of the optical glue is viewed from the side. Utility Model Content

[0004] The utility model provides a display module, a display device and an adhesive layer die-cutting device, so as to improve the white edge phenomenon when the display module is viewed from the side.

[0005] According to one aspect of the present invention, a display module is provided, the display module comprising:

[0006] A display panel, the display panel comprising a display area and a non-display area;

[0007] A cover plate, arranged on the light-emitting side of the display panel;

[0008] An adhesive layer is disposed between the display panel and the cover plate, and the adhesive layer can bond the display panel and the cover plate; wherein the adhesive layer covers the display area and part of the non-display area of ​​the display panel, and the side wall of the adhesive layer is provided with an ink layer.

[0009] Optionally, the ink layer has a thickness ranging from 2 microns to 10 microns.

[0010] Optionally, the adhesive layer is optical glue.

[0011] Optionally, the ink layer is quick-drying ink.

[0012] Optionally, the display module further includes a first shading layer, which is arranged at an edge of the adhesive layer close to the cover plate, and along the thickness direction of the display module, the orthographic projection of the first shading layer on the display panel is located in the non-display area.

[0013] Optionally, a first touch function layer and a second touch function layer are provided between the adhesive layer and the cover plate; wherein the first touch function layer is provided on a side of the second touch function layer close to the adhesive layer;

[0014] The display module also includes a second shading layer, which is arranged on a side of the first touch function layer close to the cover plate; along the thickness direction of the display module, the orthographic projection of the second shading layer on the display panel is located in the non-display area and covers the portion of the adhesive layer located in the non-display area.

[0015] Optionally, the display module further includes a front frame;

[0016] The front frame surrounds the display panel and supports the cover plate;

[0017] Among them, the front frame includes a main body and a shoulder, the main body surrounds the display panel and extends along the thickness direction of the display module; the shoulder extends along the direction of the main body pointing to the display area, and the shoulder is in the same layer as the adhesive layer.

[0018] Optionally, a gap is provided between the shoulder and the ink layer on the side wall of the adhesive layer.

[0019] According to another aspect of the present invention, a display device is provided, and the display device includes the display module as described above.

[0020] According to another aspect of the utility model, there is provided an adhesive layer die-cutting device, the adhesive layer die-cutting device comprising a driving mechanism, a cutting mechanism, a transfer mechanism and a conveying mechanism;

[0021] The driving mechanism is capable of driving the cutting mechanism to rotate;

[0022] The conveying mechanism is capable of conveying the bonded structure to be cut;

[0023] The cutting mechanism is provided with a cutting head, and the transfer mechanism is provided with ink; the transfer mechanism can apply ink to the surface of the cutting head; the cutting head can cut the bonding structure to form the bonding layer, and transfer the ink to the side wall of the bonding layer to form an ink layer.

[0024] Optionally, the adhesive layer die-cutting device further comprises a waste discharge structure, which can remove waste materials on the adhesive layer and the ink layer.

[0025] Optionally, the adhesive layer die-cutting device further comprises a secondary laminating mechanism, which is capable of performing a secondary lamination on the adhesive layer and the ink layer after the waste materials are removed.

[0026] Optionally, the ink is a quick-drying ink.

[0027] The technical solution of the embodiment of the utility model adopts a display module including: a display panel, the display panel includes a display area and a non-display area; a cover plate, which is arranged on the light-emitting side of the display panel; an adhesive layer, which is arranged between the display panel and the cover plate, and the adhesive layer can adhere the display panel and the cover plate; wherein the adhesive layer covers the display area and part of the non-display area of ​​the display panel, and the side wall of the adhesive layer is provided with an ink layer. By providing the ink layer on the side wall of the adhesive layer, the side wall of the adhesive layer is prevented from generating total reflection, thereby improving the white edge phenomenon of the display module when viewed from the side.

[0028] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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.

[0030] Figure 1 A schematic diagram of the structure of a display module provided by an embodiment of the utility model;

[0031] Figure 2 A schematic diagram of the structure of another display module provided by an embodiment of the utility model;

[0032] Figure 3 A schematic diagram of the structure of another display module provided by an embodiment of the utility model;

[0033] Figure 4 A schematic diagram of the structure of a display device provided by an embodiment of the utility model;

[0034] Figure 5 A schematic structural diagram of an adhesive layer die-cutting device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] Figure 1 A schematic diagram of a display module provided by an embodiment of the utility model, referring to Figure 1 The display module includes: a display panel 1, the display panel 1 includes a display area AA and a non-display area NAA; a cover plate CG, which is arranged on the light-emitting side of the display panel 1; an adhesive layer 11, the adhesive layer 11 is arranged between the display panel 1 and the cover plate CG, and the adhesive layer 11 is used to bond the display panel 1 and the cover plate CG; wherein the adhesive layer 11 covers the display area AA and part of the non-display area NAA of the display panel 1, and the side wall of the adhesive layer 11 is provided with an ink layer 12.

[0038] Specifically, the display module of the present embodiment may be a liquid crystal display module, that is, the display panel 1 is a liquid crystal display panel. The display panel 1 may include a backlight panel BL, a driving circuit layer TFT, a color filter layer CF, and an upper polarizer POL1 stacked in sequence. It is understandable that the display panel 1 also includes a liquid crystal layer disposed between the driving circuit layer TFT and the color filter layer CF, and a lower polarizer may be disposed between the backlight panel BL and the driving circuit layer TFT. The backlight panel BL plays the role of backlight; the lower polarizer is used to control the polarization of the light emitted by the backlight panel BL; a plurality of pixel driving circuits are disposed in the driving circuit layer TFT, and the pixel driving circuit is used to control the orientation of liquid crystal molecules in the liquid crystal layer; the color filter layer CF includes a plurality of color filter films, and different color filter films have different light transmission colors, and the light changes to the corresponding color after passing through the color filter film; the upper polarizer POL1 plays the role of polarization analysis, so that the user can see the light of the corresponding color. The cover plate CG is, for example, a glass cover plate, which is used to protect the display panel. The cover plate CG covers the display area AA and the non-display area NAA of the display panel 1. Of course, the cover plate CG can also be other materials.

[0039] The adhesive layer 11 fixes the display panel 1 and the cover plate CG. During manufacturing, the adhesive layer 11 can be firstly bonded to the cover plate CG, and then the whole structure consisting of the cover plate CG and the adhesive layer 11 can be bonded to the display panel 1. The adhesive layer 11 covers the entire display area AA of the display panel 1, and part of the non-display area NAA, that is, the side wall of the adhesive layer 11 is correspondingly arranged in the non-display area NAA.

[0040] In this embodiment, the side wall of the adhesive layer 11 is coated with an ink layer 12 to prevent the side wall of the adhesive layer 11 from directly contacting the air and generating total reflection due to the large difference in refractive index. In other words, by providing the ink layer 12, the white edge phenomenon that occurs when viewing the frame of the display module from the side can be improved. In addition, the configuration of this embodiment allows the side wall of the adhesive layer 11 to be closer to the display area AA, that is, the non-display area NAA can be set smaller, thereby reducing the frame of the display module.

[0041] The technical solution of this embodiment adopts a display module including: a display panel, which includes a display area and a non-display area; a cover plate, which is arranged on the light-emitting side of the display panel; an adhesive layer, which is arranged between the display panel and the cover plate, and is used to bond the display panel and the cover plate; wherein the adhesive layer covers the display area and part of the non-display area of ​​the display panel, and an ink layer is arranged on the side wall of the adhesive layer. By arranging the ink layer on the side wall of the adhesive layer, the side wall of the adhesive layer is prevented from generating total reflection, thereby improving the white edge phenomenon of the display module when viewed from the side.

[0042] It should be noted that the ink layer 12 is coated on the side wall of the adhesive layer 11, and its size along the arrangement direction of the ink layer 12 and the adhesive layer 11 is much smaller than the size of the adhesive layer 11. Optionally, the thickness of the ink layer 12 ranges from 2 microns to 10 microns, typically 2 microns, 5 microns, 8 microns or 10 microns, etc., wherein the thickness of the ink layer 12 refers to the thickness along the arrangement direction of the ink layer 12 and the adhesive layer 11. The thickness of the ink layer 12 is small, in other words, along the arrangement direction of the ink layer 12 and the adhesive layer 11, the overall size of the adhesive layer 11 and the ink layer 12 can be equivalent to the size of the adhesive layer 11. Thereby, the frame of the display module can be further reduced.

[0043] Optionally, based on the above implementation, the adhesive layer 11 is an optical adhesive. Optical adhesive has the advantages of low cost and mature manufacturing process. Using optical adhesive as the adhesive layer 11 can effectively reduce the cost of the display module. Of course, in some other implementations, the adhesive layer 11 can also be other materials that can be bonded.

[0044] Optionally, based on the above embodiment, the ink layer 12 is a quick-drying ink. The ink layer 12 is coated on the side wall before the ink layer 12 is attached to the cover plate CG. The quick-drying ink used in the ink layer 12 can make the ink layer quickly adhere to the adhesive layer 11, preventing the ink layer 12 from flowing and affecting the anti-reflective performance of the ink layer 12. The specific types of quick-drying inks are well known to those skilled in the art, and this embodiment does not limit this.

[0045] Optionally, Figure 2 A schematic diagram of a display module according to an embodiment of the present invention is provided. Figure 2 The display module further includes a first light shielding layer 21, which is disposed at an edge of the adhesive layer 11 close to the cover plate CG, and along the thickness direction of the display module, the orthographic projection of the first light shielding layer 21 on the display panel 1 is located in the non-display area NAA.

[0046] Specifically, the first light-shielding layer 21 can be an ink layer, which is arranged around the edge of the adhesive layer 11 and is located in the non-display area NAA, so it will not affect the display effect of the display area. When external light is obliquely incident on the first light-shielding layer 21 (such as when viewing the display panel frame from the side), the light is absorbed and does not continue to enter the adhesive layer 11, thereby further improving the situation where the light is fully reflected on the side wall of the adhesive layer 11, and the phenomenon of white edges when viewed from the side can be further improved. Optionally, along the thickness direction of the display module, the orthographic projection of the first light-shielding layer 21 on the display panel coincides with the orthographic projection of the portion of the adhesive layer 11 located in the non-display area NAA.

[0047] Optionally, Figure 3 A schematic diagram of a display module according to an embodiment of the present invention is provided. Figure 3 A first touch function layer SF1 and a second touch function layer SF2 are provided between the adhesive layer 11 and the cover plate CG; wherein the first touch function layer SF1 is provided on a side of the second touch function layer SF2 close to the adhesive layer 11; the display module further comprises a second light shielding layer 22, and the second light shielding layer 22 is provided on a side of the first touch function layer SF1 close to the cover plate CG; along the thickness direction of the display module, the orthographic projection of the second light shielding layer 22 on the display panel is located in the non-display area NAA and covers the portion of the adhesive layer 11 located in the non-display area NAA.

[0048] Specifically, similar to the first light shielding layer 21, the second light shielding layer 22 is also used to prevent obliquely incident light from being incident on the side wall of the adhesive layer 11, that is to say, by setting the second light shielding layer 22, the phenomenon of white edges in side view can also be improved. The second light shielding layer 22 can be made of ink. Preferably, it can be arranged that along the thickness direction of the display module, the orthographic projection of the second light shielding layer 22 on the display panel coincides with the orthographic projection of the part of the first touch function layer SF2 located in the non-display area NAA in the display area, thereby achieving an integrated black effect. In addition, the first touch function layer SF1 and the second touch function layer SF2 can be film layers for setting touch electrodes, wherein one touch function layer is used to set the transmitting electrode, and the other touch function layer is used to set the receiving electrode. Of course, it can be understood that an insulating layer is provided between the touch function layers, and the second light shielding layer 22 can be provided on the surface of the insulating layer.

[0049] Optionally, refer to Figures 1 to 3 The display module also includes a front frame Be; the front frame Be surrounds the display panel 1 and supports the cover plate CG; wherein the front frame Be includes a main body Be1 and a shoulder Be2, the main body Be1 surrounds the display panel 1 and extends along the thickness direction of the display module; the shoulder Be2 extends in the direction from the main body Be1 to the display area AA, and the shoulder Be2 is in the same layer as the adhesive layer 11.

[0050] Specifically, the front frame Be can be an iron frame, which plays a role in protecting the display panel and supporting the cover plate. The front frame Be is in an inverted "L" shape. During production, the display panel 1 and the front frame Be are first combined, and then the cover plate CG and the overall structure of the adhesive layer 11 are bonded. The thickness of the adhesive layer 11 can be greater than the thickness of the shoulder Be2, so as to prevent the adhesive layer 11 from failing to contact the display panel 1.

[0051] Optionally, a gap is provided between the shoulder Be2 and the ink layer 12 on the side wall of the adhesive layer 11. The gap can also be understood as a design margin. This arrangement can avoid bubbles generated when the edge of the adhesive layer 11 is attached to the front frame Be during attachment, that is, it can ensure that the adhesive layer 11 can be attached to the display panel 1, thereby ensuring that the display panel 1 has a good display effect.

[0052] The present utility model also provides a display device, such as Figure 4 As shown, Figure 4 A schematic diagram of the structure of a display device provided in an embodiment of the utility model. The display device includes the display module provided in any embodiment of the utility model. The display device can be a mobile phone, a tablet computer, an MP3, an MP4, a smart watch, a personal digital assistant, a videophone, a smart helmet or other wearable devices, etc. Since the display device provided in an embodiment of the utility model includes the display module provided in an embodiment of the utility model, it also has the same beneficial effects, which will not be described in detail here.

[0053] Based on the same utility model concept, the utility model also provides an adhesive layer die-cutting device, such as Figure 5 As shown, Figure 5 A schematic diagram of the structure of an adhesive layer die-cutting device provided in an embodiment of the utility model. The adhesive layer die-cutting device includes: a driving mechanism (not shown), a cutting mechanism 31, a transfer mechanism 32 and a conveying mechanism (not shown); the driving mechanism is used to drive the cutting mechanism 31 to rotate; the conveying mechanism is used to convey the adhesive structure 41 to be cut; the cutting mechanism is provided with a cutting head 312, and the transfer mechanism 32 is provided with ink; the transfer mechanism 32 is used to apply ink to the surface of the cutting head 312; the cutting head 312 is used to cut the adhesive structure 41 to form an adhesive layer 11, and transfer the ink to the side wall of the adhesive layer 11 to form an ink layer.

[0054] Specifically, the driving mechanism may be a motor, and the cutting mechanism 31 may be a circular knife, which includes a body 311 and a cutting head 312. When the cutting head 312 rotates, the adhesive structure 41 on the conveying mechanism may be cut, thereby cutting out the adhesive layer 11. In this embodiment, an additional transfer mechanism 32 is provided. When the cutting head 312 rotates to the transfer mechanism 32, the transfer mechanism 32 applies ink to the cutting head 312. When the cutting head 312 subsequently cuts the adhesive structure 41, the ink may be automatically applied to the side wall of the adhesive structure 41.

[0055] The technical solution of this embodiment uses an adhesive layer die-cutting device that can produce an adhesive layer with an ink layer on the side wall at one time, without the need to use an additional process to produce the ink layer on the side wall of the adhesive layer, thereby saving process steps, thereby reducing the overall production cost of the adhesive layer and the ink layer, and thus reducing the production cost of the display module.

[0056] Optionally, the ink is a quick-drying ink. The configuration of this embodiment allows the ink to dry quickly after being coated on the side wall of the adhesive layer, thereby preventing the ink from flowing from the side wall of the adhesive layer and affecting the yield.

[0057] Optionally, the adhesive structure 41 includes an adhesive material 412 and a light release film 413 and a heavy release film 411 located on both sides of the adhesive material 412. When the cutting structure is cut, the adhesive material 412 is cut according to the set size to form the adhesive layer 11. And the light release film 413 is cut at the same time, while the heavy release film 411 is retained. The product formed after this step can be understood as a first intermediate structure 51, and in the first intermediate structure 51, the light release film and the side walls of the adhesive layer 11 are coated with ink 121. Optionally, the adhesive layer die-cutting device may also include a waste discharge structure 33, which is used to remove waste on the ink layer 12 and the adhesive layer 11, that is, to remove the light release film in the first intermediate structure 51 and the ink on both sides of the light release film. Thereafter, a second intermediate structure 61 is formed, and the second intermediate structure 61 no longer contains the light release film and the corresponding ink, that is, the second intermediate structure 61 forms the adhesive layer 11 and the ink layer 12 on the side wall. However, since the adhesive layer 11 may not be used to bond the display panel and the cover plate immediately, a secondary coating is required. Figure 5 As shown, optionally, the adhesive layer die-cutting device further includes a secondary laminating mechanism 34, which can perform secondary lamination on the adhesive layer 11 and the ink layer 12 after the waste is removed, that is, to attach a light release film to the second intermediate structure 61, thereby forming a die-cut product 71. The die-cut product 71 includes the adhesive layer 11 and the ink layer 12 on both sides of the adhesive layer 11, and the two sides of the combined structure of the two are respectively formed with a light release film and a heavy release film. When used later, only the light release film and the heavy release film need to be removed, and the corresponding display panel and cover plate can be bonded.

[0058] 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.

[0059] 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 module, characterized in that: The display module comprises: A display panel, the display panel comprising a display area and a non-display area; A cover plate, arranged on the light-emitting side of the display panel; An adhesive layer is disposed between the display panel and the cover plate, and the adhesive layer can bond the display panel and the cover plate; wherein the adhesive layer covers the display area and part of the non-display area of ​​the display panel, and the side wall of the adhesive layer is provided with an ink layer.

2. The display module according to claim 1, characterized in that: The thickness of the ink layer ranges from 2 microns to 10 microns.

3. The display module according to claim 1, characterized in that: The display module further includes a first shading layer, which is disposed at an edge of the adhesive layer close to one side of the cover plate, and along the thickness direction of the display module, the orthographic projection of the first shading layer on the display panel is located in the non-display area.

4. The display module according to claim 1, characterized in that: A first touch function layer and a second touch function layer are provided between the adhesive layer and the cover plate; wherein the first touch function layer is provided on a side of the second touch function layer close to the adhesive layer; The display module also includes a second shading layer, which is arranged on a side of the first touch function layer close to the cover plate; along the thickness direction of the display module, the orthographic projection of the second shading layer on the display panel is located in the non-display area and covers the portion of the adhesive layer located in the non-display area.

5. The display module according to claim 1, characterized in that: The display module also includes a front frame; The front frame surrounds the display panel and supports the cover plate; Among them, the front frame includes a main body and a shoulder, the main body surrounds the display panel and extends along the thickness direction of the display module; the shoulder extends along the direction of the main body pointing to the display area, and the shoulder is in the same layer as the adhesive layer.

6. The display module according to claim 5, characterized in that: A gap is arranged between the shoulder and the ink layer on the side wall of the adhesive layer.

7. A display device, characterized in that: The display device comprises the display module according to any one of claims 1-6.

8. An adhesive layer die-cutting device, characterized in that: The adhesive layer die-cutting device is used to prepare the adhesive layer and ink layer of the display module according to any one of claims 1 to 6; the adhesive layer die-cutting device comprises a driving mechanism, a cutting mechanism, a transfer mechanism and a transmission mechanism; The driving mechanism is capable of driving the cutting mechanism to rotate; The conveying mechanism is capable of conveying the bonded structure to be cut; The cutting mechanism is provided with a cutting head, and the transfer mechanism is provided with ink; the transfer mechanism can apply ink to the surface of the cutting head; the cutting head can cut the bonding structure to form the bonding layer, and transfer the ink to the side wall of the bonding layer to form an ink layer.

9. The adhesive layer die-cutting device according to claim 8, characterized in that: The adhesive layer die-cutting device further comprises a waste discharge structure, which can remove waste materials on the adhesive layer and the ink layer.

10. The adhesive layer die-cutting device according to claim 9, characterized in that: The adhesive layer die-cutting device further comprises a secondary laminating mechanism, which can perform secondary lamination on the adhesive layer and the ink layer after the waste materials are removed.

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